1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52 * Number of sectors per IO command
53 * Will be set in megasas_init_mfi if user does not provide
54 */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58 "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102 "1 - iops: High iops queues are not allocated &\n\t\t"
103 "interrupt coalescing is enabled on all queues\n\t\t"
104 "2 - latency: High iops queues are not allocated &\n\t\t"
105 "interrupt coalescing is disabled on all queues\n\t\t"
106 "default mode is 'balanced'"
107 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int poll_queues;
118 module_param(poll_queues, int, 0444);
119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
120 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
121 "It is not applicable for MFI_SERIES. &\n\t\t"
122 "Driver will work in latency mode. &\n\t\t"
123 "High iops queues are not allocated &\n\t\t"
124 );
125
126 int host_tagset_enable = 1;
127 module_param(host_tagset_enable, int, 0444);
128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
129
130 MODULE_LICENSE("GPL");
131 MODULE_VERSION(MEGASAS_VERSION);
132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
134
135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
136 static int megasas_get_pd_list(struct megasas_instance *instance);
137 static int megasas_ld_list_query(struct megasas_instance *instance,
138 u8 query_type);
139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
140 static int megasas_register_aen(struct megasas_instance *instance,
141 u32 seq_num, u32 class_locale_word);
142 static void megasas_get_pd_info(struct megasas_instance *instance,
143 struct scsi_device *sdev);
144 static void
145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
146
147 /*
148 * PCI ID table for all supported controllers
149 */
150 static struct pci_device_id megasas_pci_table[] = {
151
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
155 /* ppc IOP */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
157 /* ppc IOP */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
159 /* gen2*/
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
161 /* gen2*/
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
163 /* skinny*/
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
165 /* skinny*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
167 /* xscale IOP, vega */
168 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
169 /* xscale IOP */
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
171 /* Fusion */
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
173 /* Plasma */
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
175 /* Invader */
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
177 /* Fury */
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
179 /* Intruder */
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
181 /* Intruder 24 port*/
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
184 /* VENTURA */
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
198 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
199 {}
200 };
201
202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
203
204 static int megasas_mgmt_majorno;
205 struct megasas_mgmt_info megasas_mgmt_info;
206 static struct fasync_struct *megasas_async_queue;
207 static DEFINE_MUTEX(megasas_async_queue_mutex);
208
209 static int megasas_poll_wait_aen;
210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
211 static u32 support_poll_for_event;
212 u32 megasas_dbg_lvl;
213 static u32 support_device_change;
214 static bool support_nvme_encapsulation;
215 static bool support_pci_lane_margining;
216
217 /* define lock for aen poll */
218 static DEFINE_SPINLOCK(poll_aen_lock);
219
220 extern struct dentry *megasas_debugfs_root;
221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
222
223 void
224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
225 u8 alt_status);
226 static u32
227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
228 static int
229 megasas_adp_reset_gen2(struct megasas_instance *instance,
230 struct megasas_register_set __iomem *reg_set);
231 static irqreturn_t megasas_isr(int irq, void *devp);
232 static u32
233 megasas_init_adapter_mfi(struct megasas_instance *instance);
234 u32
235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
236 struct scsi_cmnd *scmd);
237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
238 int
239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
240 int seconds);
241 void megasas_fusion_ocr_wq(struct work_struct *work);
242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
243 int initial);
244 static int
245 megasas_set_dma_mask(struct megasas_instance *instance);
246 static int
247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
248 static inline void
249 megasas_free_ctrl_mem(struct megasas_instance *instance);
250 static inline int
251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
252 static inline void
253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
254 static inline void
255 megasas_init_ctrl_params(struct megasas_instance *instance);
256
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)257 u32 megasas_readl(struct megasas_instance *instance,
258 const volatile void __iomem *addr)
259 {
260 u32 i = 0, ret_val;
261 /*
262 * Due to a HW errata in Aero controllers, reads to certain
263 * Fusion registers could intermittently return all zeroes.
264 * This behavior is transient in nature and subsequent reads will
265 * return valid value. As a workaround in driver, retry readl for
266 * upto three times until a non-zero value is read.
267 */
268 if (instance->adapter_type == AERO_SERIES) {
269 do {
270 ret_val = readl(addr);
271 i++;
272 } while (ret_val == 0 && i < 3);
273 return ret_val;
274 } else {
275 return readl(addr);
276 }
277 }
278
279 /**
280 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
281 * @instance: Adapter soft state
282 * @dcmd: DCMD frame inside MFI command
283 * @dma_addr: DMA address of buffer to be passed to FW
284 * @dma_len: Length of DMA buffer to be passed to FW
285 * @return: void
286 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)287 void megasas_set_dma_settings(struct megasas_instance *instance,
288 struct megasas_dcmd_frame *dcmd,
289 dma_addr_t dma_addr, u32 dma_len)
290 {
291 if (instance->consistent_mask_64bit) {
292 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
293 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
294 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
295
296 } else {
297 dcmd->sgl.sge32[0].phys_addr =
298 cpu_to_le32(lower_32_bits(dma_addr));
299 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
300 dcmd->flags = cpu_to_le16(dcmd->flags);
301 }
302 }
303
304 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
306 {
307 instance->instancet->fire_cmd(instance,
308 cmd->frame_phys_addr, 0, instance->reg_set);
309 return;
310 }
311
312 /**
313 * megasas_get_cmd - Get a command from the free pool
314 * @instance: Adapter soft state
315 *
316 * Returns a free command from the pool
317 */
megasas_get_cmd(struct megasas_instance * instance)318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
319 *instance)
320 {
321 unsigned long flags;
322 struct megasas_cmd *cmd = NULL;
323
324 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
325
326 if (!list_empty(&instance->cmd_pool)) {
327 cmd = list_entry((&instance->cmd_pool)->next,
328 struct megasas_cmd, list);
329 list_del_init(&cmd->list);
330 } else {
331 dev_err(&instance->pdev->dev, "Command pool empty!\n");
332 }
333
334 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
335 return cmd;
336 }
337
338 /**
339 * megasas_return_cmd - Return a cmd to free command pool
340 * @instance: Adapter soft state
341 * @cmd: Command packet to be returned to free command pool
342 */
343 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
345 {
346 unsigned long flags;
347 u32 blk_tags;
348 struct megasas_cmd_fusion *cmd_fusion;
349 struct fusion_context *fusion = instance->ctrl_context;
350
351 /* This flag is used only for fusion adapter.
352 * Wait for Interrupt for Polled mode DCMD
353 */
354 if (cmd->flags & DRV_DCMD_POLLED_MODE)
355 return;
356
357 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
358
359 if (fusion) {
360 blk_tags = instance->max_scsi_cmds + cmd->index;
361 cmd_fusion = fusion->cmd_list[blk_tags];
362 megasas_return_cmd_fusion(instance, cmd_fusion);
363 }
364 cmd->scmd = NULL;
365 cmd->frame_count = 0;
366 cmd->flags = 0;
367 memset(cmd->frame, 0, instance->mfi_frame_size);
368 cmd->frame->io.context = cpu_to_le32(cmd->index);
369 if (!fusion && reset_devices)
370 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
371 list_add(&cmd->list, (&instance->cmd_pool)->next);
372
373 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
374
375 }
376
377 static const char *
format_timestamp(uint32_t timestamp)378 format_timestamp(uint32_t timestamp)
379 {
380 static char buffer[32];
381
382 if ((timestamp & 0xff000000) == 0xff000000)
383 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
384 0x00ffffff);
385 else
386 snprintf(buffer, sizeof(buffer), "%us", timestamp);
387 return buffer;
388 }
389
390 static const char *
format_class(int8_t class)391 format_class(int8_t class)
392 {
393 static char buffer[6];
394
395 switch (class) {
396 case MFI_EVT_CLASS_DEBUG:
397 return "debug";
398 case MFI_EVT_CLASS_PROGRESS:
399 return "progress";
400 case MFI_EVT_CLASS_INFO:
401 return "info";
402 case MFI_EVT_CLASS_WARNING:
403 return "WARN";
404 case MFI_EVT_CLASS_CRITICAL:
405 return "CRIT";
406 case MFI_EVT_CLASS_FATAL:
407 return "FATAL";
408 case MFI_EVT_CLASS_DEAD:
409 return "DEAD";
410 default:
411 snprintf(buffer, sizeof(buffer), "%d", class);
412 return buffer;
413 }
414 }
415
416 /**
417 * megasas_decode_evt: Decode FW AEN event and print critical event
418 * for information.
419 * @instance: Adapter soft state
420 */
421 static void
megasas_decode_evt(struct megasas_instance * instance)422 megasas_decode_evt(struct megasas_instance *instance)
423 {
424 struct megasas_evt_detail *evt_detail = instance->evt_detail;
425 union megasas_evt_class_locale class_locale;
426 class_locale.word = le32_to_cpu(evt_detail->cl.word);
427
428 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
429 (event_log_level > MFI_EVT_CLASS_DEAD)) {
430 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
431 event_log_level = MFI_EVT_CLASS_CRITICAL;
432 }
433
434 if (class_locale.members.class >= event_log_level)
435 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
436 le32_to_cpu(evt_detail->seq_num),
437 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
438 (class_locale.members.locale),
439 format_class(class_locale.members.class),
440 evt_detail->description);
441
442 if (megasas_dbg_lvl & LD_PD_DEBUG)
443 dev_info(&instance->pdev->dev,
444 "evt_detail.args.ld.target_id/index %d/%d\n",
445 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
446
447 }
448
449 /*
450 * The following functions are defined for xscale
451 * (deviceid : 1064R, PERC5) controllers
452 */
453
454 /**
455 * megasas_enable_intr_xscale - Enables interrupts
456 * @instance: Adapter soft state
457 */
458 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)459 megasas_enable_intr_xscale(struct megasas_instance *instance)
460 {
461 struct megasas_register_set __iomem *regs;
462
463 regs = instance->reg_set;
464 writel(0, &(regs)->outbound_intr_mask);
465
466 /* Dummy readl to force pci flush */
467 readl(®s->outbound_intr_mask);
468 }
469
470 /**
471 * megasas_disable_intr_xscale -Disables interrupt
472 * @instance: Adapter soft state
473 */
474 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)475 megasas_disable_intr_xscale(struct megasas_instance *instance)
476 {
477 struct megasas_register_set __iomem *regs;
478 u32 mask = 0x1f;
479
480 regs = instance->reg_set;
481 writel(mask, ®s->outbound_intr_mask);
482 /* Dummy readl to force pci flush */
483 readl(®s->outbound_intr_mask);
484 }
485
486 /**
487 * megasas_read_fw_status_reg_xscale - returns the current FW status value
488 * @instance: Adapter soft state
489 */
490 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
492 {
493 return readl(&instance->reg_set->outbound_msg_0);
494 }
495 /**
496 * megasas_clear_intr_xscale - Check & clear interrupt
497 * @instance: Adapter soft state
498 */
499 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)500 megasas_clear_intr_xscale(struct megasas_instance *instance)
501 {
502 u32 status;
503 u32 mfiStatus = 0;
504 struct megasas_register_set __iomem *regs;
505 regs = instance->reg_set;
506
507 /*
508 * Check if it is our interrupt
509 */
510 status = readl(®s->outbound_intr_status);
511
512 if (status & MFI_OB_INTR_STATUS_MASK)
513 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
514 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
515 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
516
517 /*
518 * Clear the interrupt by writing back the same value
519 */
520 if (mfiStatus)
521 writel(status, ®s->outbound_intr_status);
522
523 /* Dummy readl to force pci flush */
524 readl(®s->outbound_intr_status);
525
526 return mfiStatus;
527 }
528
529 /**
530 * megasas_fire_cmd_xscale - Sends command to the FW
531 * @instance: Adapter soft state
532 * @frame_phys_addr : Physical address of cmd
533 * @frame_count : Number of frames for the command
534 * @regs : MFI register set
535 */
536 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
538 dma_addr_t frame_phys_addr,
539 u32 frame_count,
540 struct megasas_register_set __iomem *regs)
541 {
542 unsigned long flags;
543
544 spin_lock_irqsave(&instance->hba_lock, flags);
545 writel((frame_phys_addr >> 3)|(frame_count),
546 &(regs)->inbound_queue_port);
547 spin_unlock_irqrestore(&instance->hba_lock, flags);
548 }
549
550 /**
551 * megasas_adp_reset_xscale - For controller reset
552 * @instance: Adapter soft state
553 * @regs: MFI register set
554 */
555 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)556 megasas_adp_reset_xscale(struct megasas_instance *instance,
557 struct megasas_register_set __iomem *regs)
558 {
559 u32 i;
560 u32 pcidata;
561
562 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
563
564 for (i = 0; i < 3; i++)
565 msleep(1000); /* sleep for 3 secs */
566 pcidata = 0;
567 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
568 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
569 if (pcidata & 0x2) {
570 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
571 pcidata &= ~0x2;
572 pci_write_config_dword(instance->pdev,
573 MFI_1068_PCSR_OFFSET, pcidata);
574
575 for (i = 0; i < 2; i++)
576 msleep(1000); /* need to wait 2 secs again */
577
578 pcidata = 0;
579 pci_read_config_dword(instance->pdev,
580 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
581 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
582 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
583 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
584 pcidata = 0;
585 pci_write_config_dword(instance->pdev,
586 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
587 }
588 }
589 return 0;
590 }
591
592 /**
593 * megasas_check_reset_xscale - For controller reset check
594 * @instance: Adapter soft state
595 * @regs: MFI register set
596 */
597 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)598 megasas_check_reset_xscale(struct megasas_instance *instance,
599 struct megasas_register_set __iomem *regs)
600 {
601 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
602 (le32_to_cpu(*instance->consumer) ==
603 MEGASAS_ADPRESET_INPROG_SIGN))
604 return 1;
605 return 0;
606 }
607
608 static struct megasas_instance_template megasas_instance_template_xscale = {
609
610 .fire_cmd = megasas_fire_cmd_xscale,
611 .enable_intr = megasas_enable_intr_xscale,
612 .disable_intr = megasas_disable_intr_xscale,
613 .clear_intr = megasas_clear_intr_xscale,
614 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
615 .adp_reset = megasas_adp_reset_xscale,
616 .check_reset = megasas_check_reset_xscale,
617 .service_isr = megasas_isr,
618 .tasklet = megasas_complete_cmd_dpc,
619 .init_adapter = megasas_init_adapter_mfi,
620 .build_and_issue_cmd = megasas_build_and_issue_cmd,
621 .issue_dcmd = megasas_issue_dcmd,
622 };
623
624 /*
625 * This is the end of set of functions & definitions specific
626 * to xscale (deviceid : 1064R, PERC5) controllers
627 */
628
629 /*
630 * The following functions are defined for ppc (deviceid : 0x60)
631 * controllers
632 */
633
634 /**
635 * megasas_enable_intr_ppc - Enables interrupts
636 * @instance: Adapter soft state
637 */
638 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)639 megasas_enable_intr_ppc(struct megasas_instance *instance)
640 {
641 struct megasas_register_set __iomem *regs;
642
643 regs = instance->reg_set;
644 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
645
646 writel(~0x80000000, &(regs)->outbound_intr_mask);
647
648 /* Dummy readl to force pci flush */
649 readl(®s->outbound_intr_mask);
650 }
651
652 /**
653 * megasas_disable_intr_ppc - Disable interrupt
654 * @instance: Adapter soft state
655 */
656 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)657 megasas_disable_intr_ppc(struct megasas_instance *instance)
658 {
659 struct megasas_register_set __iomem *regs;
660 u32 mask = 0xFFFFFFFF;
661
662 regs = instance->reg_set;
663 writel(mask, ®s->outbound_intr_mask);
664 /* Dummy readl to force pci flush */
665 readl(®s->outbound_intr_mask);
666 }
667
668 /**
669 * megasas_read_fw_status_reg_ppc - returns the current FW status value
670 * @instance: Adapter soft state
671 */
672 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
674 {
675 return readl(&instance->reg_set->outbound_scratch_pad_0);
676 }
677
678 /**
679 * megasas_clear_intr_ppc - Check & clear interrupt
680 * @instance: Adapter soft state
681 */
682 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)683 megasas_clear_intr_ppc(struct megasas_instance *instance)
684 {
685 u32 status, mfiStatus = 0;
686 struct megasas_register_set __iomem *regs;
687 regs = instance->reg_set;
688
689 /*
690 * Check if it is our interrupt
691 */
692 status = readl(®s->outbound_intr_status);
693
694 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
695 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
696
697 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
698 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
699
700 /*
701 * Clear the interrupt by writing back the same value
702 */
703 writel(status, ®s->outbound_doorbell_clear);
704
705 /* Dummy readl to force pci flush */
706 readl(®s->outbound_doorbell_clear);
707
708 return mfiStatus;
709 }
710
711 /**
712 * megasas_fire_cmd_ppc - Sends command to the FW
713 * @instance: Adapter soft state
714 * @frame_phys_addr: Physical address of cmd
715 * @frame_count: Number of frames for the command
716 * @regs: MFI register set
717 */
718 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
720 dma_addr_t frame_phys_addr,
721 u32 frame_count,
722 struct megasas_register_set __iomem *regs)
723 {
724 unsigned long flags;
725
726 spin_lock_irqsave(&instance->hba_lock, flags);
727 writel((frame_phys_addr | (frame_count<<1))|1,
728 &(regs)->inbound_queue_port);
729 spin_unlock_irqrestore(&instance->hba_lock, flags);
730 }
731
732 /**
733 * megasas_check_reset_ppc - For controller reset check
734 * @instance: Adapter soft state
735 * @regs: MFI register set
736 */
737 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)738 megasas_check_reset_ppc(struct megasas_instance *instance,
739 struct megasas_register_set __iomem *regs)
740 {
741 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
742 return 1;
743
744 return 0;
745 }
746
747 static struct megasas_instance_template megasas_instance_template_ppc = {
748
749 .fire_cmd = megasas_fire_cmd_ppc,
750 .enable_intr = megasas_enable_intr_ppc,
751 .disable_intr = megasas_disable_intr_ppc,
752 .clear_intr = megasas_clear_intr_ppc,
753 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
754 .adp_reset = megasas_adp_reset_xscale,
755 .check_reset = megasas_check_reset_ppc,
756 .service_isr = megasas_isr,
757 .tasklet = megasas_complete_cmd_dpc,
758 .init_adapter = megasas_init_adapter_mfi,
759 .build_and_issue_cmd = megasas_build_and_issue_cmd,
760 .issue_dcmd = megasas_issue_dcmd,
761 };
762
763 /**
764 * megasas_enable_intr_skinny - Enables interrupts
765 * @instance: Adapter soft state
766 */
767 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)768 megasas_enable_intr_skinny(struct megasas_instance *instance)
769 {
770 struct megasas_register_set __iomem *regs;
771
772 regs = instance->reg_set;
773 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
774
775 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
776
777 /* Dummy readl to force pci flush */
778 readl(®s->outbound_intr_mask);
779 }
780
781 /**
782 * megasas_disable_intr_skinny - Disables interrupt
783 * @instance: Adapter soft state
784 */
785 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)786 megasas_disable_intr_skinny(struct megasas_instance *instance)
787 {
788 struct megasas_register_set __iomem *regs;
789 u32 mask = 0xFFFFFFFF;
790
791 regs = instance->reg_set;
792 writel(mask, ®s->outbound_intr_mask);
793 /* Dummy readl to force pci flush */
794 readl(®s->outbound_intr_mask);
795 }
796
797 /**
798 * megasas_read_fw_status_reg_skinny - returns the current FW status value
799 * @instance: Adapter soft state
800 */
801 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
803 {
804 return readl(&instance->reg_set->outbound_scratch_pad_0);
805 }
806
807 /**
808 * megasas_clear_intr_skinny - Check & clear interrupt
809 * @instance: Adapter soft state
810 */
811 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)812 megasas_clear_intr_skinny(struct megasas_instance *instance)
813 {
814 u32 status;
815 u32 mfiStatus = 0;
816 struct megasas_register_set __iomem *regs;
817 regs = instance->reg_set;
818
819 /*
820 * Check if it is our interrupt
821 */
822 status = readl(®s->outbound_intr_status);
823
824 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
825 return 0;
826 }
827
828 /*
829 * Check if it is our interrupt
830 */
831 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
832 MFI_STATE_FAULT) {
833 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
834 } else
835 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
836
837 /*
838 * Clear the interrupt by writing back the same value
839 */
840 writel(status, ®s->outbound_intr_status);
841
842 /*
843 * dummy read to flush PCI
844 */
845 readl(®s->outbound_intr_status);
846
847 return mfiStatus;
848 }
849
850 /**
851 * megasas_fire_cmd_skinny - Sends command to the FW
852 * @instance: Adapter soft state
853 * @frame_phys_addr: Physical address of cmd
854 * @frame_count: Number of frames for the command
855 * @regs: MFI register set
856 */
857 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
859 dma_addr_t frame_phys_addr,
860 u32 frame_count,
861 struct megasas_register_set __iomem *regs)
862 {
863 unsigned long flags;
864
865 spin_lock_irqsave(&instance->hba_lock, flags);
866 writel(upper_32_bits(frame_phys_addr),
867 &(regs)->inbound_high_queue_port);
868 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
869 &(regs)->inbound_low_queue_port);
870 spin_unlock_irqrestore(&instance->hba_lock, flags);
871 }
872
873 /**
874 * megasas_check_reset_skinny - For controller reset check
875 * @instance: Adapter soft state
876 * @regs: MFI register set
877 */
878 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)879 megasas_check_reset_skinny(struct megasas_instance *instance,
880 struct megasas_register_set __iomem *regs)
881 {
882 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
883 return 1;
884
885 return 0;
886 }
887
888 static struct megasas_instance_template megasas_instance_template_skinny = {
889
890 .fire_cmd = megasas_fire_cmd_skinny,
891 .enable_intr = megasas_enable_intr_skinny,
892 .disable_intr = megasas_disable_intr_skinny,
893 .clear_intr = megasas_clear_intr_skinny,
894 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
895 .adp_reset = megasas_adp_reset_gen2,
896 .check_reset = megasas_check_reset_skinny,
897 .service_isr = megasas_isr,
898 .tasklet = megasas_complete_cmd_dpc,
899 .init_adapter = megasas_init_adapter_mfi,
900 .build_and_issue_cmd = megasas_build_and_issue_cmd,
901 .issue_dcmd = megasas_issue_dcmd,
902 };
903
904
905 /*
906 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
907 * controllers
908 */
909
910 /**
911 * megasas_enable_intr_gen2 - Enables interrupts
912 * @instance: Adapter soft state
913 */
914 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)915 megasas_enable_intr_gen2(struct megasas_instance *instance)
916 {
917 struct megasas_register_set __iomem *regs;
918
919 regs = instance->reg_set;
920 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
921
922 /* write ~0x00000005 (4 & 1) to the intr mask*/
923 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
924
925 /* Dummy readl to force pci flush */
926 readl(®s->outbound_intr_mask);
927 }
928
929 /**
930 * megasas_disable_intr_gen2 - Disables interrupt
931 * @instance: Adapter soft state
932 */
933 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)934 megasas_disable_intr_gen2(struct megasas_instance *instance)
935 {
936 struct megasas_register_set __iomem *regs;
937 u32 mask = 0xFFFFFFFF;
938
939 regs = instance->reg_set;
940 writel(mask, ®s->outbound_intr_mask);
941 /* Dummy readl to force pci flush */
942 readl(®s->outbound_intr_mask);
943 }
944
945 /**
946 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
947 * @instance: Adapter soft state
948 */
949 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
951 {
952 return readl(&instance->reg_set->outbound_scratch_pad_0);
953 }
954
955 /**
956 * megasas_clear_intr_gen2 - Check & clear interrupt
957 * @instance: Adapter soft state
958 */
959 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)960 megasas_clear_intr_gen2(struct megasas_instance *instance)
961 {
962 u32 status;
963 u32 mfiStatus = 0;
964 struct megasas_register_set __iomem *regs;
965 regs = instance->reg_set;
966
967 /*
968 * Check if it is our interrupt
969 */
970 status = readl(®s->outbound_intr_status);
971
972 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
973 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
974 }
975 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
976 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
977 }
978
979 /*
980 * Clear the interrupt by writing back the same value
981 */
982 if (mfiStatus)
983 writel(status, ®s->outbound_doorbell_clear);
984
985 /* Dummy readl to force pci flush */
986 readl(®s->outbound_intr_status);
987
988 return mfiStatus;
989 }
990
991 /**
992 * megasas_fire_cmd_gen2 - Sends command to the FW
993 * @instance: Adapter soft state
994 * @frame_phys_addr: Physical address of cmd
995 * @frame_count: Number of frames for the command
996 * @regs: MFI register set
997 */
998 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000 dma_addr_t frame_phys_addr,
1001 u32 frame_count,
1002 struct megasas_register_set __iomem *regs)
1003 {
1004 unsigned long flags;
1005
1006 spin_lock_irqsave(&instance->hba_lock, flags);
1007 writel((frame_phys_addr | (frame_count<<1))|1,
1008 &(regs)->inbound_queue_port);
1009 spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013 * megasas_adp_reset_gen2 - For controller reset
1014 * @instance: Adapter soft state
1015 * @reg_set: MFI register set
1016 */
1017 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019 struct megasas_register_set __iomem *reg_set)
1020 {
1021 u32 retry = 0 ;
1022 u32 HostDiag;
1023 u32 __iomem *seq_offset = ®_set->seq_offset;
1024 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1025
1026 if (instance->instancet == &megasas_instance_template_skinny) {
1027 seq_offset = ®_set->fusion_seq_offset;
1028 hostdiag_offset = ®_set->fusion_host_diag;
1029 }
1030
1031 writel(0, seq_offset);
1032 writel(4, seq_offset);
1033 writel(0xb, seq_offset);
1034 writel(2, seq_offset);
1035 writel(7, seq_offset);
1036 writel(0xd, seq_offset);
1037
1038 msleep(1000);
1039
1040 HostDiag = (u32)readl(hostdiag_offset);
1041
1042 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043 msleep(100);
1044 HostDiag = (u32)readl(hostdiag_offset);
1045 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046 retry, HostDiag);
1047
1048 if (retry++ >= 100)
1049 return 1;
1050
1051 }
1052
1053 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057 ssleep(10);
1058
1059 HostDiag = (u32)readl(hostdiag_offset);
1060 while (HostDiag & DIAG_RESET_ADAPTER) {
1061 msleep(100);
1062 HostDiag = (u32)readl(hostdiag_offset);
1063 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064 retry, HostDiag);
1065
1066 if (retry++ >= 1000)
1067 return 1;
1068
1069 }
1070 return 0;
1071 }
1072
1073 /**
1074 * megasas_check_reset_gen2 - For controller reset check
1075 * @instance: Adapter soft state
1076 * @regs: MFI register set
1077 */
1078 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080 struct megasas_register_set __iomem *regs)
1081 {
1082 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083 return 1;
1084
1085 return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090 .fire_cmd = megasas_fire_cmd_gen2,
1091 .enable_intr = megasas_enable_intr_gen2,
1092 .disable_intr = megasas_disable_intr_gen2,
1093 .clear_intr = megasas_clear_intr_gen2,
1094 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095 .adp_reset = megasas_adp_reset_gen2,
1096 .check_reset = megasas_check_reset_gen2,
1097 .service_isr = megasas_isr,
1098 .tasklet = megasas_complete_cmd_dpc,
1099 .init_adapter = megasas_init_adapter_mfi,
1100 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101 .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105 * This is the end of set of functions & definitions
1106 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107 */
1108
1109 /*
1110 * Template added for TB (Fusion)
1111 */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115 * megasas_issue_polled - Issues a polling command
1116 * @instance: Adapter soft state
1117 * @cmd: Command packet to be issued
1118 *
1119 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120 */
1121 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131 __func__, __LINE__);
1132 return DCMD_INIT;
1133 }
1134
1135 instance->instancet->issue_dcmd(instance, cmd);
1136
1137 return wait_and_poll(instance, cmd, instance->requestorId ?
1138 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1143 * @instance: Adapter soft state
1144 * @cmd: Command to be issued
1145 * @timeout: Timeout in seconds
1146 *
1147 * This function waits on an event for the command to be returned from ISR.
1148 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149 * Used to issue ioctl commands.
1150 */
1151 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153 struct megasas_cmd *cmd, int timeout)
1154 {
1155 int ret = 0;
1156 cmd->cmd_status_drv = DCMD_INIT;
1157
1158 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160 __func__, __LINE__);
1161 return DCMD_INIT;
1162 }
1163
1164 instance->instancet->issue_dcmd(instance, cmd);
1165
1166 if (timeout) {
1167 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169 if (!ret) {
1170 dev_err(&instance->pdev->dev,
1171 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172 cmd->frame->dcmd.opcode, __func__);
1173 return DCMD_TIMEOUT;
1174 }
1175 } else
1176 wait_event(instance->int_cmd_wait_q,
1177 cmd->cmd_status_drv != DCMD_INIT);
1178
1179 return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1184 * @instance: Adapter soft state
1185 * @cmd_to_abort: Previously issued cmd to be aborted
1186 * @timeout: Timeout in seconds
1187 *
1188 * MFI firmware can abort previously issued AEN comamnd (automatic event
1189 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190 * cmd and waits for return status.
1191 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192 */
1193 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197 struct megasas_cmd *cmd;
1198 struct megasas_abort_frame *abort_fr;
1199 int ret = 0;
1200 u32 opcode;
1201
1202 cmd = megasas_get_cmd(instance);
1203
1204 if (!cmd)
1205 return -1;
1206
1207 abort_fr = &cmd->frame->abort;
1208
1209 /*
1210 * Prepare and issue the abort frame
1211 */
1212 abort_fr->cmd = MFI_CMD_ABORT;
1213 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214 abort_fr->flags = cpu_to_le16(0);
1215 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216 abort_fr->abort_mfi_phys_addr_lo =
1217 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218 abort_fr->abort_mfi_phys_addr_hi =
1219 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221 cmd->sync_cmd = 1;
1222 cmd->cmd_status_drv = DCMD_INIT;
1223
1224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226 __func__, __LINE__);
1227 return DCMD_INIT;
1228 }
1229
1230 instance->instancet->issue_dcmd(instance, cmd);
1231
1232 if (timeout) {
1233 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235 if (!ret) {
1236 opcode = cmd_to_abort->frame->dcmd.opcode;
1237 dev_err(&instance->pdev->dev,
1238 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239 opcode, __func__);
1240 return DCMD_TIMEOUT;
1241 }
1242 } else
1243 wait_event(instance->abort_cmd_wait_q,
1244 cmd->cmd_status_drv != DCMD_INIT);
1245
1246 cmd->sync_cmd = 0;
1247
1248 megasas_return_cmd(instance, cmd);
1249 return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253 * megasas_make_sgl32 - Prepares 32-bit SGL
1254 * @instance: Adapter soft state
1255 * @scp: SCSI command from the mid-layer
1256 * @mfi_sgl: SGL to be filled in
1257 *
1258 * If successful, this function returns the number of SG elements. Otherwise,
1259 * it returnes -1.
1260 */
1261 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263 union megasas_sgl *mfi_sgl)
1264 {
1265 int i;
1266 int sge_count;
1267 struct scatterlist *os_sgl;
1268
1269 sge_count = scsi_dma_map(scp);
1270 BUG_ON(sge_count < 0);
1271
1272 if (sge_count) {
1273 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276 }
1277 }
1278 return sge_count;
1279 }
1280
1281 /**
1282 * megasas_make_sgl64 - Prepares 64-bit SGL
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command from the mid-layer
1285 * @mfi_sgl: SGL to be filled in
1286 *
1287 * If successful, this function returns the number of SG elements. Otherwise,
1288 * it returnes -1.
1289 */
1290 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292 union megasas_sgl *mfi_sgl)
1293 {
1294 int i;
1295 int sge_count;
1296 struct scatterlist *os_sgl;
1297
1298 sge_count = scsi_dma_map(scp);
1299 BUG_ON(sge_count < 0);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305 }
1306 }
1307 return sge_count;
1308 }
1309
1310 /**
1311 * megasas_make_sgl_skinny - Prepares IEEE SGL
1312 * @instance: Adapter soft state
1313 * @scp: SCSI command from the mid-layer
1314 * @mfi_sgl: SGL to be filled in
1315 *
1316 * If successful, this function returns the number of SG elements. Otherwise,
1317 * it returnes -1.
1318 */
1319 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323 int i;
1324 int sge_count;
1325 struct scatterlist *os_sgl;
1326
1327 sge_count = scsi_dma_map(scp);
1328
1329 if (sge_count) {
1330 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331 mfi_sgl->sge_skinny[i].length =
1332 cpu_to_le32(sg_dma_len(os_sgl));
1333 mfi_sgl->sge_skinny[i].phys_addr =
1334 cpu_to_le64(sg_dma_address(os_sgl));
1335 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336 }
1337 }
1338 return sge_count;
1339 }
1340
1341 /**
1342 * megasas_get_frame_count - Computes the number of frames
1343 * @frame_type : type of frame- io or pthru frame
1344 * @sge_count : number of sg elements
1345 *
1346 * Returns the number of frames required for numnber of sge's (sge_count)
1347 */
1348
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350 u8 sge_count, u8 frame_type)
1351 {
1352 int num_cnt;
1353 int sge_bytes;
1354 u32 sge_sz;
1355 u32 frame_count = 0;
1356
1357 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358 sizeof(struct megasas_sge32);
1359
1360 if (instance->flag_ieee) {
1361 sge_sz = sizeof(struct megasas_sge_skinny);
1362 }
1363
1364 /*
1365 * Main frame can contain 2 SGEs for 64-bit SGLs and
1366 * 3 SGEs for 32-bit SGLs for ldio &
1367 * 1 SGEs for 64-bit SGLs and
1368 * 2 SGEs for 32-bit SGLs for pthru frame
1369 */
1370 if (unlikely(frame_type == PTHRU_FRAME)) {
1371 if (instance->flag_ieee == 1) {
1372 num_cnt = sge_count - 1;
1373 } else if (IS_DMA64)
1374 num_cnt = sge_count - 1;
1375 else
1376 num_cnt = sge_count - 2;
1377 } else {
1378 if (instance->flag_ieee == 1) {
1379 num_cnt = sge_count - 1;
1380 } else if (IS_DMA64)
1381 num_cnt = sge_count - 2;
1382 else
1383 num_cnt = sge_count - 3;
1384 }
1385
1386 if (num_cnt > 0) {
1387 sge_bytes = sge_sz * num_cnt;
1388
1389 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391 }
1392 /* Main frame */
1393 frame_count += 1;
1394
1395 if (frame_count > 7)
1396 frame_count = 8;
1397 return frame_count;
1398 }
1399
1400 /**
1401 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402 * @instance: Adapter soft state
1403 * @scp: SCSI command
1404 * @cmd: Command to be prepared in
1405 *
1406 * This function prepares CDB commands. These are typcially pass-through
1407 * commands to the devices.
1408 */
1409 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411 struct megasas_cmd *cmd)
1412 {
1413 u32 is_logical;
1414 u32 device_id;
1415 u16 flags = 0;
1416 struct megasas_pthru_frame *pthru;
1417
1418 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419 device_id = MEGASAS_DEV_INDEX(scp);
1420 pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422 if (scp->sc_data_direction == DMA_TO_DEVICE)
1423 flags = MFI_FRAME_DIR_WRITE;
1424 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425 flags = MFI_FRAME_DIR_READ;
1426 else if (scp->sc_data_direction == DMA_NONE)
1427 flags = MFI_FRAME_DIR_NONE;
1428
1429 if (instance->flag_ieee == 1) {
1430 flags |= MFI_FRAME_IEEE;
1431 }
1432
1433 /*
1434 * Prepare the DCDB frame
1435 */
1436 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437 pthru->cmd_status = 0x0;
1438 pthru->scsi_status = 0x0;
1439 pthru->target_id = device_id;
1440 pthru->lun = scp->device->lun;
1441 pthru->cdb_len = scp->cmd_len;
1442 pthru->timeout = 0;
1443 pthru->pad_0 = 0;
1444 pthru->flags = cpu_to_le16(flags);
1445 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449 /*
1450 * If the command is for the tape device, set the
1451 * pthru timeout to the os layer timeout value.
1452 */
1453 if (scp->device->type == TYPE_TAPE) {
1454 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455 pthru->timeout = cpu_to_le16(0xFFFF);
1456 else
1457 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458 }
1459
1460 /*
1461 * Construct SGL
1462 */
1463 if (instance->flag_ieee == 1) {
1464 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466 &pthru->sgl);
1467 } else if (IS_DMA64) {
1468 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470 &pthru->sgl);
1471 } else
1472 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473 &pthru->sgl);
1474
1475 if (pthru->sge_count > instance->max_num_sge) {
1476 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477 pthru->sge_count);
1478 return 0;
1479 }
1480
1481 /*
1482 * Sense info specific
1483 */
1484 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485 pthru->sense_buf_phys_addr_hi =
1486 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487 pthru->sense_buf_phys_addr_lo =
1488 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490 /*
1491 * Compute the total number of frames this command consumes. FW uses
1492 * this number to pull sufficient number of frames from host memory.
1493 */
1494 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495 PTHRU_FRAME);
1496
1497 return cmd->frame_count;
1498 }
1499
1500 /**
1501 * megasas_build_ldio - Prepares IOs to logical devices
1502 * @instance: Adapter soft state
1503 * @scp: SCSI command
1504 * @cmd: Command to be prepared
1505 *
1506 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507 */
1508 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510 struct megasas_cmd *cmd)
1511 {
1512 u32 device_id;
1513 u8 sc = scp->cmnd[0];
1514 u16 flags = 0;
1515 struct megasas_io_frame *ldio;
1516
1517 device_id = MEGASAS_DEV_INDEX(scp);
1518 ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520 if (scp->sc_data_direction == DMA_TO_DEVICE)
1521 flags = MFI_FRAME_DIR_WRITE;
1522 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523 flags = MFI_FRAME_DIR_READ;
1524
1525 if (instance->flag_ieee == 1) {
1526 flags |= MFI_FRAME_IEEE;
1527 }
1528
1529 /*
1530 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531 */
1532 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533 ldio->cmd_status = 0x0;
1534 ldio->scsi_status = 0x0;
1535 ldio->target_id = device_id;
1536 ldio->timeout = 0;
1537 ldio->reserved_0 = 0;
1538 ldio->pad_0 = 0;
1539 ldio->flags = cpu_to_le16(flags);
1540 ldio->start_lba_hi = 0;
1541 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543 /*
1544 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545 */
1546 if (scp->cmd_len == 6) {
1547 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549 ((u32) scp->cmnd[2] << 8) |
1550 (u32) scp->cmnd[3]);
1551
1552 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553 }
1554
1555 /*
1556 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557 */
1558 else if (scp->cmd_len == 10) {
1559 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560 ((u32) scp->cmnd[7] << 8));
1561 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562 ((u32) scp->cmnd[3] << 16) |
1563 ((u32) scp->cmnd[4] << 8) |
1564 (u32) scp->cmnd[5]);
1565 }
1566
1567 /*
1568 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569 */
1570 else if (scp->cmd_len == 12) {
1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572 ((u32) scp->cmnd[7] << 16) |
1573 ((u32) scp->cmnd[8] << 8) |
1574 (u32) scp->cmnd[9]);
1575
1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577 ((u32) scp->cmnd[3] << 16) |
1578 ((u32) scp->cmnd[4] << 8) |
1579 (u32) scp->cmnd[5]);
1580 }
1581
1582 /*
1583 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584 */
1585 else if (scp->cmd_len == 16) {
1586 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587 ((u32) scp->cmnd[11] << 16) |
1588 ((u32) scp->cmnd[12] << 8) |
1589 (u32) scp->cmnd[13]);
1590
1591 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592 ((u32) scp->cmnd[7] << 16) |
1593 ((u32) scp->cmnd[8] << 8) |
1594 (u32) scp->cmnd[9]);
1595
1596 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597 ((u32) scp->cmnd[3] << 16) |
1598 ((u32) scp->cmnd[4] << 8) |
1599 (u32) scp->cmnd[5]);
1600
1601 }
1602
1603 /*
1604 * Construct SGL
1605 */
1606 if (instance->flag_ieee) {
1607 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609 &ldio->sgl);
1610 } else if (IS_DMA64) {
1611 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613 } else
1614 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616 if (ldio->sge_count > instance->max_num_sge) {
1617 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618 ldio->sge_count);
1619 return 0;
1620 }
1621
1622 /*
1623 * Sense info specific
1624 */
1625 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626 ldio->sense_buf_phys_addr_hi = 0;
1627 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629 /*
1630 * Compute the total number of frames this command consumes. FW uses
1631 * this number to pull sufficient number of frames from host memory.
1632 */
1633 cmd->frame_count = megasas_get_frame_count(instance,
1634 ldio->sge_count, IO_FRAME);
1635
1636 return cmd->frame_count;
1637 }
1638
1639 /**
1640 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1641 * and whether it's RW or non RW
1642 * @cmd: SCSI command
1643 *
1644 */
megasas_cmd_type(struct scsi_cmnd * cmd)1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647 int ret;
1648
1649 switch (cmd->cmnd[0]) {
1650 case READ_10:
1651 case WRITE_10:
1652 case READ_12:
1653 case WRITE_12:
1654 case READ_6:
1655 case WRITE_6:
1656 case READ_16:
1657 case WRITE_16:
1658 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660 break;
1661 default:
1662 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664 }
1665 return ret;
1666 }
1667
1668 /**
1669 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1670 * in FW
1671 * @instance: Adapter soft state
1672 */
1673 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676 struct megasas_cmd *cmd;
1677 int i,n;
1678 union megasas_sgl *mfi_sgl;
1679 struct megasas_io_frame *ldio;
1680 struct megasas_pthru_frame *pthru;
1681 u32 sgcount;
1682 u16 max_cmd = instance->max_fw_cmds;
1683
1684 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686 if (IS_DMA64)
1687 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688 else
1689 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692 for (i = 0; i < max_cmd; i++) {
1693 cmd = instance->cmd_list[i];
1694 if (!cmd->scmd)
1695 continue;
1696 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698 ldio = (struct megasas_io_frame *)cmd->frame;
1699 mfi_sgl = &ldio->sgl;
1700 sgcount = ldio->sge_count;
1701 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706 } else {
1707 pthru = (struct megasas_pthru_frame *) cmd->frame;
1708 mfi_sgl = &pthru->sgl;
1709 sgcount = pthru->sge_count;
1710 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715 }
1716 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717 for (n = 0; n < sgcount; n++) {
1718 if (IS_DMA64)
1719 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720 le32_to_cpu(mfi_sgl->sge64[n].length),
1721 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722 else
1723 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724 le32_to_cpu(mfi_sgl->sge32[n].length),
1725 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726 }
1727 }
1728 } /*for max_cmd*/
1729 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730 for (i = 0; i < max_cmd; i++) {
1731
1732 cmd = instance->cmd_list[i];
1733
1734 if (cmd->sync_cmd == 1)
1735 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736 }
1737 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742 struct scsi_cmnd *scmd)
1743 {
1744 struct megasas_cmd *cmd;
1745 u32 frame_count;
1746
1747 cmd = megasas_get_cmd(instance);
1748 if (!cmd)
1749 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751 /*
1752 * Logical drive command
1753 */
1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756 else
1757 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759 if (!frame_count)
1760 goto out_return_cmd;
1761
1762 cmd->scmd = scmd;
1763 megasas_priv(scmd)->cmd_priv = cmd;
1764
1765 /*
1766 * Issue the command to the FW
1767 */
1768 atomic_inc(&instance->fw_outstanding);
1769
1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771 cmd->frame_count-1, instance->reg_set);
1772
1773 return 0;
1774 out_return_cmd:
1775 megasas_return_cmd(instance, cmd);
1776 return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781 * megasas_queue_command - Queue entry point
1782 * @shost: adapter SCSI host
1783 * @scmd: SCSI command to be queued
1784 */
1785 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788 struct megasas_instance *instance;
1789 struct MR_PRIV_DEVICE *mr_device_priv_data;
1790 u32 ld_tgt_id;
1791
1792 instance = (struct megasas_instance *)
1793 scmd->device->host->hostdata;
1794
1795 if (instance->unload == 1) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (instance->issuepend_done == 0)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805 /* Check for an mpio path and adjust behavior */
1806 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807 if (megasas_check_mpio_paths(instance, scmd) ==
1808 (DID_REQUEUE << 16)) {
1809 return SCSI_MLQUEUE_HOST_BUSY;
1810 } else {
1811 scmd->result = DID_NO_CONNECT << 16;
1812 scsi_done(scmd);
1813 return 0;
1814 }
1815 }
1816
1817 mr_device_priv_data = scmd->device->hostdata;
1818 if (!mr_device_priv_data ||
1819 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820 scmd->result = DID_NO_CONNECT << 16;
1821 scsi_done(scmd);
1822 return 0;
1823 }
1824
1825 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828 scmd->result = DID_NO_CONNECT << 16;
1829 scsi_done(scmd);
1830 return 0;
1831 }
1832 }
1833
1834 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837 if (mr_device_priv_data->tm_busy)
1838 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841 scmd->result = 0;
1842
1843 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844 (scmd->device->id >= instance->fw_supported_vd_count ||
1845 scmd->device->lun)) {
1846 scmd->result = DID_BAD_TARGET << 16;
1847 goto out_done;
1848 }
1849
1850 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851 MEGASAS_IS_LOGICAL(scmd->device) &&
1852 (!instance->fw_sync_cache_support)) {
1853 scmd->result = DID_OK << 16;
1854 goto out_done;
1855 }
1856
1857 return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859 out_done:
1860 scsi_done(scmd);
1861 return 0;
1862 }
1863
megasas_lookup_instance(u16 host_no)1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866 int i;
1867
1868 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870 if ((megasas_mgmt_info.instance[i]) &&
1871 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872 return megasas_mgmt_info.instance[i];
1873 }
1874
1875 return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891 bool is_target_prop)
1892 {
1893 u16 pd_index = 0, ld;
1894 u32 device_id;
1895 struct megasas_instance *instance;
1896 struct fusion_context *fusion;
1897 struct MR_PRIV_DEVICE *mr_device_priv_data;
1898 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899 struct MR_LD_RAID *raid;
1900 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902 instance = megasas_lookup_instance(sdev->host->host_no);
1903 fusion = instance->ctrl_context;
1904 mr_device_priv_data = sdev->hostdata;
1905
1906 if (!fusion || !mr_device_priv_data)
1907 return;
1908
1909 if (MEGASAS_IS_LOGICAL(sdev)) {
1910 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911 + sdev->id;
1912 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914 if (ld >= instance->fw_supported_vd_count)
1915 return;
1916 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921 mr_device_priv_data->is_tm_capable =
1922 raid->capability.tmCapable;
1923
1924 if (!raid->flags.isEPD)
1925 sdev->no_write_same = 1;
1926
1927 } else if (instance->use_seqnum_jbod_fp) {
1928 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929 sdev->id;
1930 pd_sync = (void *)fusion->pd_seq_sync
1931 [(instance->pd_seq_map_id - 1) & 1];
1932 mr_device_priv_data->is_tm_capable =
1933 pd_sync->seq[pd_index].capability.tmCapable;
1934 }
1935
1936 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937 /*
1938 * If FW provides a target reset timeout value, driver will use
1939 * it. If not set, fallback to default values.
1940 */
1941 mr_device_priv_data->target_reset_tmo =
1942 min_t(u8, instance->max_reset_tmo,
1943 instance->tgt_prop->reset_tmo);
1944 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945 } else {
1946 mr_device_priv_data->target_reset_tmo =
1947 MEGASAS_DEFAULT_TM_TIMEOUT;
1948 mr_device_priv_data->task_abort_tmo =
1949 MEGASAS_DEFAULT_TM_TIMEOUT;
1950 }
1951 }
1952
1953 /*
1954 * megasas_set_nvme_device_properties -
1955 * set nomerges=2
1956 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958 *
1959 * MR firmware provides value in KB. Caller of this function converts
1960 * kb into bytes.
1961 *
1962 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963 * MR firmware provides value 128 as (32 * 4K) = 128K.
1964 *
1965 * @sdev: scsi device
1966 * @max_io_size: maximum io transfer size
1967 *
1968 */
1969 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972 struct megasas_instance *instance;
1973 u32 mr_nvme_pg_size;
1974
1975 instance = (struct megasas_instance *)sdev->host->hostdata;
1976 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
megasas_slave_configure(struct scsi_device * sdev)2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071 u16 pd_index = 0;
2072 struct megasas_instance *instance;
2073 int ret_target_prop = DCMD_FAILED;
2074 bool is_target_prop = false;
2075
2076 instance = megasas_lookup_instance(sdev->host->host_no);
2077 if (instance->pd_list_not_supported) {
2078 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080 sdev->id;
2081 if (instance->pd_list[pd_index].driveState !=
2082 MR_PD_STATE_SYSTEM)
2083 return -ENXIO;
2084 }
2085 }
2086
2087 mutex_lock(&instance->reset_mutex);
2088 /* Send DCMD to Firmware and cache the information */
2089 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090 megasas_get_pd_info(instance, sdev);
2091
2092 /* Some ventura firmware may not have instance->nvme_page_size set.
2093 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094 */
2095 if ((instance->tgt_prop) && (instance->nvme_page_size))
2096 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099 megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101 /* This sdev property may change post OCR */
2102 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104 mutex_unlock(&instance->reset_mutex);
2105
2106 return 0;
2107 }
2108
megasas_slave_alloc(struct scsi_device * sdev)2109 static int megasas_slave_alloc(struct scsi_device *sdev)
2110 {
2111 u16 pd_index = 0, ld_tgt_id;
2112 struct megasas_instance *instance ;
2113 struct MR_PRIV_DEVICE *mr_device_priv_data;
2114
2115 instance = megasas_lookup_instance(sdev->host->host_no);
2116 if (!MEGASAS_IS_LOGICAL(sdev)) {
2117 /*
2118 * Open the OS scan to the SYSTEM PD
2119 */
2120 pd_index =
2121 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2122 sdev->id;
2123 if ((instance->pd_list_not_supported ||
2124 instance->pd_list[pd_index].driveState ==
2125 MR_PD_STATE_SYSTEM)) {
2126 goto scan_target;
2127 }
2128 return -ENXIO;
2129 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2130 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2131 return -ENXIO;
2132 }
2133
2134 scan_target:
2135 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2136 GFP_KERNEL);
2137 if (!mr_device_priv_data)
2138 return -ENOMEM;
2139
2140 if (MEGASAS_IS_LOGICAL(sdev)) {
2141 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2142 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2143 if (megasas_dbg_lvl & LD_PD_DEBUG)
2144 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2145 }
2146
2147 sdev->hostdata = mr_device_priv_data;
2148
2149 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2150 instance->r1_ldio_hint_default);
2151 return 0;
2152 }
2153
megasas_slave_destroy(struct scsi_device * sdev)2154 static void megasas_slave_destroy(struct scsi_device *sdev)
2155 {
2156 u16 ld_tgt_id;
2157 struct megasas_instance *instance;
2158
2159 instance = megasas_lookup_instance(sdev->host->host_no);
2160
2161 if (MEGASAS_IS_LOGICAL(sdev)) {
2162 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2163 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2164 return;
2165 }
2166 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2167 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2168 if (megasas_dbg_lvl & LD_PD_DEBUG)
2169 sdev_printk(KERN_INFO, sdev,
2170 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2171 }
2172
2173 kfree(sdev->hostdata);
2174 sdev->hostdata = NULL;
2175 }
2176
2177 /*
2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2179 * kill adapter
2180 * @instance: Adapter soft state
2181 *
2182 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2184 {
2185 int i;
2186 struct megasas_cmd *cmd_mfi;
2187 struct megasas_cmd_fusion *cmd_fusion;
2188 struct fusion_context *fusion = instance->ctrl_context;
2189
2190 /* Find all outstanding ioctls */
2191 if (fusion) {
2192 for (i = 0; i < instance->max_fw_cmds; i++) {
2193 cmd_fusion = fusion->cmd_list[i];
2194 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2195 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2196 if (cmd_mfi->sync_cmd &&
2197 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2198 cmd_mfi->frame->hdr.cmd_status =
2199 MFI_STAT_WRONG_STATE;
2200 megasas_complete_cmd(instance,
2201 cmd_mfi, DID_OK);
2202 }
2203 }
2204 }
2205 } else {
2206 for (i = 0; i < instance->max_fw_cmds; i++) {
2207 cmd_mfi = instance->cmd_list[i];
2208 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2209 MFI_CMD_ABORT)
2210 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2211 }
2212 }
2213 }
2214
2215
megaraid_sas_kill_hba(struct megasas_instance * instance)2216 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2217 {
2218 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2219 dev_warn(&instance->pdev->dev,
2220 "Adapter already dead, skipping kill HBA\n");
2221 return;
2222 }
2223
2224 /* Set critical error to block I/O & ioctls in case caller didn't */
2225 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2226 /* Wait 1 second to ensure IO or ioctls in build have posted */
2227 msleep(1000);
2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2230 (instance->adapter_type != MFI_SERIES)) {
2231 if (!instance->requestorId) {
2232 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2233 /* Flush */
2234 readl(&instance->reg_set->doorbell);
2235 }
2236 if (instance->requestorId && instance->peerIsPresent)
2237 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2238 } else {
2239 writel(MFI_STOP_ADP,
2240 &instance->reg_set->inbound_doorbell);
2241 }
2242 /* Complete outstanding ioctls when adapter is killed */
2243 megasas_complete_outstanding_ioctls(instance);
2244 }
2245
2246 /**
2247 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2248 * restored to max value
2249 * @instance: Adapter soft state
2250 *
2251 */
2252 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2254 {
2255 unsigned long flags;
2256
2257 if (instance->flag & MEGASAS_FW_BUSY
2258 && time_after(jiffies, instance->last_time + 5 * HZ)
2259 && atomic_read(&instance->fw_outstanding) <
2260 instance->throttlequeuedepth + 1) {
2261
2262 spin_lock_irqsave(instance->host->host_lock, flags);
2263 instance->flag &= ~MEGASAS_FW_BUSY;
2264
2265 instance->host->can_queue = instance->cur_can_queue;
2266 spin_unlock_irqrestore(instance->host->host_lock, flags);
2267 }
2268 }
2269
2270 /**
2271 * megasas_complete_cmd_dpc - Returns FW's controller structure
2272 * @instance_addr: Address of adapter soft state
2273 *
2274 * Tasklet to complete cmds
2275 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2277 {
2278 u32 producer;
2279 u32 consumer;
2280 u32 context;
2281 struct megasas_cmd *cmd;
2282 struct megasas_instance *instance =
2283 (struct megasas_instance *)instance_addr;
2284 unsigned long flags;
2285
2286 /* If we have already declared adapter dead, donot complete cmds */
2287 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2288 return;
2289
2290 spin_lock_irqsave(&instance->completion_lock, flags);
2291
2292 producer = le32_to_cpu(*instance->producer);
2293 consumer = le32_to_cpu(*instance->consumer);
2294
2295 while (consumer != producer) {
2296 context = le32_to_cpu(instance->reply_queue[consumer]);
2297 if (context >= instance->max_fw_cmds) {
2298 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2299 context);
2300 BUG();
2301 }
2302
2303 cmd = instance->cmd_list[context];
2304
2305 megasas_complete_cmd(instance, cmd, DID_OK);
2306
2307 consumer++;
2308 if (consumer == (instance->max_fw_cmds + 1)) {
2309 consumer = 0;
2310 }
2311 }
2312
2313 *instance->consumer = cpu_to_le32(producer);
2314
2315 spin_unlock_irqrestore(&instance->completion_lock, flags);
2316
2317 /*
2318 * Check if we can restore can_queue
2319 */
2320 megasas_check_and_restore_queue_depth(instance);
2321 }
2322
2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2324
2325 /**
2326 * megasas_start_timer - Initializes sriov heartbeat timer object
2327 * @instance: Adapter soft state
2328 *
2329 */
megasas_start_timer(struct megasas_instance * instance)2330 void megasas_start_timer(struct megasas_instance *instance)
2331 {
2332 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2333
2334 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2335 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2336 add_timer(timer);
2337 }
2338
2339 static void
2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2341
2342 static void
2343 process_fw_state_change_wq(struct work_struct *work);
2344
megasas_do_ocr(struct megasas_instance * instance)2345 static void megasas_do_ocr(struct megasas_instance *instance)
2346 {
2347 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2348 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2349 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2350 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2351 }
2352 instance->instancet->disable_intr(instance);
2353 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2354 instance->issuepend_done = 0;
2355
2356 atomic_set(&instance->fw_outstanding, 0);
2357 megasas_internal_reset_defer_cmds(instance);
2358 process_fw_state_change_wq(&instance->work_init);
2359 }
2360
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2362 int initial)
2363 {
2364 struct megasas_cmd *cmd;
2365 struct megasas_dcmd_frame *dcmd;
2366 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2367 dma_addr_t new_affiliation_111_h;
2368 int ld, retval = 0;
2369 u8 thisVf;
2370
2371 cmd = megasas_get_cmd(instance);
2372
2373 if (!cmd) {
2374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2375 "Failed to get cmd for scsi%d\n",
2376 instance->host->host_no);
2377 return -ENOMEM;
2378 }
2379
2380 dcmd = &cmd->frame->dcmd;
2381
2382 if (!instance->vf_affiliation_111) {
2383 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2384 "affiliation for scsi%d\n", instance->host->host_no);
2385 megasas_return_cmd(instance, cmd);
2386 return -ENOMEM;
2387 }
2388
2389 if (initial)
2390 memset(instance->vf_affiliation_111, 0,
2391 sizeof(struct MR_LD_VF_AFFILIATION_111));
2392 else {
2393 new_affiliation_111 =
2394 dma_alloc_coherent(&instance->pdev->dev,
2395 sizeof(struct MR_LD_VF_AFFILIATION_111),
2396 &new_affiliation_111_h, GFP_KERNEL);
2397 if (!new_affiliation_111) {
2398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2399 "memory for new affiliation for scsi%d\n",
2400 instance->host->host_no);
2401 megasas_return_cmd(instance, cmd);
2402 return -ENOMEM;
2403 }
2404 }
2405
2406 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2407
2408 dcmd->cmd = MFI_CMD_DCMD;
2409 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2410 dcmd->sge_count = 1;
2411 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2412 dcmd->timeout = 0;
2413 dcmd->pad_0 = 0;
2414 dcmd->data_xfer_len =
2415 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2416 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2417
2418 if (initial)
2419 dcmd->sgl.sge32[0].phys_addr =
2420 cpu_to_le32(instance->vf_affiliation_111_h);
2421 else
2422 dcmd->sgl.sge32[0].phys_addr =
2423 cpu_to_le32(new_affiliation_111_h);
2424
2425 dcmd->sgl.sge32[0].length = cpu_to_le32(
2426 sizeof(struct MR_LD_VF_AFFILIATION_111));
2427
2428 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2429 "scsi%d\n", instance->host->host_no);
2430
2431 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2432 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2433 " failed with status 0x%x for scsi%d\n",
2434 dcmd->cmd_status, instance->host->host_no);
2435 retval = 1; /* Do a scan if we couldn't get affiliation */
2436 goto out;
2437 }
2438
2439 if (!initial) {
2440 thisVf = new_affiliation_111->thisVf;
2441 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2442 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2443 new_affiliation_111->map[ld].policy[thisVf]) {
2444 dev_warn(&instance->pdev->dev, "SR-IOV: "
2445 "Got new LD/VF affiliation for scsi%d\n",
2446 instance->host->host_no);
2447 memcpy(instance->vf_affiliation_111,
2448 new_affiliation_111,
2449 sizeof(struct MR_LD_VF_AFFILIATION_111));
2450 retval = 1;
2451 goto out;
2452 }
2453 }
2454 out:
2455 if (new_affiliation_111) {
2456 dma_free_coherent(&instance->pdev->dev,
2457 sizeof(struct MR_LD_VF_AFFILIATION_111),
2458 new_affiliation_111,
2459 new_affiliation_111_h);
2460 }
2461
2462 megasas_return_cmd(instance, cmd);
2463
2464 return retval;
2465 }
2466
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2468 int initial)
2469 {
2470 struct megasas_cmd *cmd;
2471 struct megasas_dcmd_frame *dcmd;
2472 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2473 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2474 dma_addr_t new_affiliation_h;
2475 int i, j, retval = 0, found = 0, doscan = 0;
2476 u8 thisVf;
2477
2478 cmd = megasas_get_cmd(instance);
2479
2480 if (!cmd) {
2481 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2482 "Failed to get cmd for scsi%d\n",
2483 instance->host->host_no);
2484 return -ENOMEM;
2485 }
2486
2487 dcmd = &cmd->frame->dcmd;
2488
2489 if (!instance->vf_affiliation) {
2490 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2491 "affiliation for scsi%d\n", instance->host->host_no);
2492 megasas_return_cmd(instance, cmd);
2493 return -ENOMEM;
2494 }
2495
2496 if (initial)
2497 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2498 sizeof(struct MR_LD_VF_AFFILIATION));
2499 else {
2500 new_affiliation =
2501 dma_alloc_coherent(&instance->pdev->dev,
2502 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2503 &new_affiliation_h, GFP_KERNEL);
2504 if (!new_affiliation) {
2505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2506 "memory for new affiliation for scsi%d\n",
2507 instance->host->host_no);
2508 megasas_return_cmd(instance, cmd);
2509 return -ENOMEM;
2510 }
2511 }
2512
2513 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2514
2515 dcmd->cmd = MFI_CMD_DCMD;
2516 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2517 dcmd->sge_count = 1;
2518 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2519 dcmd->timeout = 0;
2520 dcmd->pad_0 = 0;
2521 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2522 sizeof(struct MR_LD_VF_AFFILIATION));
2523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2524
2525 if (initial)
2526 dcmd->sgl.sge32[0].phys_addr =
2527 cpu_to_le32(instance->vf_affiliation_h);
2528 else
2529 dcmd->sgl.sge32[0].phys_addr =
2530 cpu_to_le32(new_affiliation_h);
2531
2532 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2533 sizeof(struct MR_LD_VF_AFFILIATION));
2534
2535 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2536 "scsi%d\n", instance->host->host_no);
2537
2538
2539 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2540 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2541 " failed with status 0x%x for scsi%d\n",
2542 dcmd->cmd_status, instance->host->host_no);
2543 retval = 1; /* Do a scan if we couldn't get affiliation */
2544 goto out;
2545 }
2546
2547 if (!initial) {
2548 if (!new_affiliation->ldCount) {
2549 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2550 "affiliation for passive path for scsi%d\n",
2551 instance->host->host_no);
2552 retval = 1;
2553 goto out;
2554 }
2555 newmap = new_affiliation->map;
2556 savedmap = instance->vf_affiliation->map;
2557 thisVf = new_affiliation->thisVf;
2558 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2559 found = 0;
2560 for (j = 0; j < instance->vf_affiliation->ldCount;
2561 j++) {
2562 if (newmap->ref.targetId ==
2563 savedmap->ref.targetId) {
2564 found = 1;
2565 if (newmap->policy[thisVf] !=
2566 savedmap->policy[thisVf]) {
2567 doscan = 1;
2568 goto out;
2569 }
2570 }
2571 savedmap = (struct MR_LD_VF_MAP *)
2572 ((unsigned char *)savedmap +
2573 savedmap->size);
2574 }
2575 if (!found && newmap->policy[thisVf] !=
2576 MR_LD_ACCESS_HIDDEN) {
2577 doscan = 1;
2578 goto out;
2579 }
2580 newmap = (struct MR_LD_VF_MAP *)
2581 ((unsigned char *)newmap + newmap->size);
2582 }
2583
2584 newmap = new_affiliation->map;
2585 savedmap = instance->vf_affiliation->map;
2586
2587 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2588 found = 0;
2589 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2590 if (savedmap->ref.targetId ==
2591 newmap->ref.targetId) {
2592 found = 1;
2593 if (savedmap->policy[thisVf] !=
2594 newmap->policy[thisVf]) {
2595 doscan = 1;
2596 goto out;
2597 }
2598 }
2599 newmap = (struct MR_LD_VF_MAP *)
2600 ((unsigned char *)newmap +
2601 newmap->size);
2602 }
2603 if (!found && savedmap->policy[thisVf] !=
2604 MR_LD_ACCESS_HIDDEN) {
2605 doscan = 1;
2606 goto out;
2607 }
2608 savedmap = (struct MR_LD_VF_MAP *)
2609 ((unsigned char *)savedmap +
2610 savedmap->size);
2611 }
2612 }
2613 out:
2614 if (doscan) {
2615 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2616 "affiliation for scsi%d\n", instance->host->host_no);
2617 memcpy(instance->vf_affiliation, new_affiliation,
2618 new_affiliation->size);
2619 retval = 1;
2620 }
2621
2622 if (new_affiliation)
2623 dma_free_coherent(&instance->pdev->dev,
2624 (MAX_LOGICAL_DRIVES + 1) *
2625 sizeof(struct MR_LD_VF_AFFILIATION),
2626 new_affiliation, new_affiliation_h);
2627 megasas_return_cmd(instance, cmd);
2628
2629 return retval;
2630 }
2631
2632 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2634 int initial)
2635 {
2636 int retval;
2637
2638 if (instance->PlasmaFW111)
2639 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2640 else
2641 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2642 return retval;
2643 }
2644
2645 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2647 int initial)
2648 {
2649 struct megasas_cmd *cmd;
2650 struct megasas_dcmd_frame *dcmd;
2651 int retval = 0;
2652
2653 cmd = megasas_get_cmd(instance);
2654
2655 if (!cmd) {
2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2657 "Failed to get cmd for scsi%d\n",
2658 instance->host->host_no);
2659 return -ENOMEM;
2660 }
2661
2662 dcmd = &cmd->frame->dcmd;
2663
2664 if (initial) {
2665 instance->hb_host_mem =
2666 dma_alloc_coherent(&instance->pdev->dev,
2667 sizeof(struct MR_CTRL_HB_HOST_MEM),
2668 &instance->hb_host_mem_h,
2669 GFP_KERNEL);
2670 if (!instance->hb_host_mem) {
2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2672 " memory for heartbeat host memory for scsi%d\n",
2673 instance->host->host_no);
2674 retval = -ENOMEM;
2675 goto out;
2676 }
2677 }
2678
2679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2680
2681 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2682 dcmd->cmd = MFI_CMD_DCMD;
2683 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2684 dcmd->sge_count = 1;
2685 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2686 dcmd->timeout = 0;
2687 dcmd->pad_0 = 0;
2688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2690
2691 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2692 sizeof(struct MR_CTRL_HB_HOST_MEM));
2693
2694 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2695 instance->host->host_no);
2696
2697 if ((instance->adapter_type != MFI_SERIES) &&
2698 !instance->mask_interrupts)
2699 retval = megasas_issue_blocked_cmd(instance, cmd,
2700 MEGASAS_ROUTINE_WAIT_TIME_VF);
2701 else
2702 retval = megasas_issue_polled(instance, cmd);
2703
2704 if (retval) {
2705 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2706 "_MEM_ALLOC DCMD %s for scsi%d\n",
2707 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2708 "timed out" : "failed", instance->host->host_no);
2709 retval = 1;
2710 }
2711
2712 out:
2713 megasas_return_cmd(instance, cmd);
2714
2715 return retval;
2716 }
2717
2718 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2720 {
2721 struct megasas_instance *instance =
2722 from_timer(instance, t, sriov_heartbeat_timer);
2723
2724 if (instance->hb_host_mem->HB.fwCounter !=
2725 instance->hb_host_mem->HB.driverCounter) {
2726 instance->hb_host_mem->HB.driverCounter =
2727 instance->hb_host_mem->HB.fwCounter;
2728 mod_timer(&instance->sriov_heartbeat_timer,
2729 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2730 } else {
2731 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2732 "completed for scsi%d\n", instance->host->host_no);
2733 schedule_work(&instance->work_init);
2734 }
2735 }
2736
2737 /**
2738 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2739 * @instance: Adapter soft state
2740 *
2741 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2742 * complete all its outstanding commands. Returns error if one or more IOs
2743 * are pending after this time period. It also marks the controller dead.
2744 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2746 {
2747 int i, sl, outstanding;
2748 u32 reset_index;
2749 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2750 unsigned long flags;
2751 struct list_head clist_local;
2752 struct megasas_cmd *reset_cmd;
2753 u32 fw_state;
2754
2755 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2756 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2757 __func__, __LINE__);
2758 return FAILED;
2759 }
2760
2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762
2763 INIT_LIST_HEAD(&clist_local);
2764 spin_lock_irqsave(&instance->hba_lock, flags);
2765 list_splice_init(&instance->internal_reset_pending_q,
2766 &clist_local);
2767 spin_unlock_irqrestore(&instance->hba_lock, flags);
2768
2769 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2770 for (i = 0; i < wait_time; i++) {
2771 msleep(1000);
2772 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2773 break;
2774 }
2775
2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2778 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2779 return FAILED;
2780 }
2781
2782 reset_index = 0;
2783 while (!list_empty(&clist_local)) {
2784 reset_cmd = list_entry((&clist_local)->next,
2785 struct megasas_cmd, list);
2786 list_del_init(&reset_cmd->list);
2787 if (reset_cmd->scmd) {
2788 reset_cmd->scmd->result = DID_REQUEUE << 16;
2789 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2790 reset_index, reset_cmd,
2791 reset_cmd->scmd->cmnd[0]);
2792
2793 scsi_done(reset_cmd->scmd);
2794 megasas_return_cmd(instance, reset_cmd);
2795 } else if (reset_cmd->sync_cmd) {
2796 dev_notice(&instance->pdev->dev, "%p synch cmds"
2797 "reset queue\n",
2798 reset_cmd);
2799
2800 reset_cmd->cmd_status_drv = DCMD_INIT;
2801 instance->instancet->fire_cmd(instance,
2802 reset_cmd->frame_phys_addr,
2803 0, instance->reg_set);
2804 } else {
2805 dev_notice(&instance->pdev->dev, "%p unexpected"
2806 "cmds lst\n",
2807 reset_cmd);
2808 }
2809 reset_index++;
2810 }
2811
2812 return SUCCESS;
2813 }
2814
2815 for (i = 0; i < resetwaittime; i++) {
2816 outstanding = atomic_read(&instance->fw_outstanding);
2817
2818 if (!outstanding)
2819 break;
2820
2821 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2822 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2823 "commands to complete\n",i,outstanding);
2824 /*
2825 * Call cmd completion routine. Cmd to be
2826 * be completed directly without depending on isr.
2827 */
2828 megasas_complete_cmd_dpc((unsigned long)instance);
2829 }
2830
2831 msleep(1000);
2832 }
2833
2834 i = 0;
2835 outstanding = atomic_read(&instance->fw_outstanding);
2836 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2837
2838 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2839 goto no_outstanding;
2840
2841 if (instance->disableOnlineCtrlReset)
2842 goto kill_hba_and_failed;
2843 do {
2844 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2845 dev_info(&instance->pdev->dev,
2846 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2847 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2848 if (i == 3)
2849 goto kill_hba_and_failed;
2850 megasas_do_ocr(instance);
2851
2852 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2853 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2854 __func__, __LINE__);
2855 return FAILED;
2856 }
2857 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2858 __func__, __LINE__);
2859
2860 for (sl = 0; sl < 10; sl++)
2861 msleep(500);
2862
2863 outstanding = atomic_read(&instance->fw_outstanding);
2864
2865 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2866 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2867 goto no_outstanding;
2868 }
2869 i++;
2870 } while (i <= 3);
2871
2872 no_outstanding:
2873
2874 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2875 __func__, __LINE__);
2876 return SUCCESS;
2877
2878 kill_hba_and_failed:
2879
2880 /* Reset not supported, kill adapter */
2881 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2882 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2883 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2884 atomic_read(&instance->fw_outstanding));
2885 megasas_dump_pending_frames(instance);
2886 megaraid_sas_kill_hba(instance);
2887
2888 return FAILED;
2889 }
2890
2891 /**
2892 * megasas_generic_reset - Generic reset routine
2893 * @scmd: Mid-layer SCSI command
2894 *
2895 * This routine implements a generic reset handler for device, bus and host
2896 * reset requests. Device, bus and host specific reset handlers can use this
2897 * function after they do their specific tasks.
2898 */
megasas_generic_reset(struct scsi_cmnd * scmd)2899 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2900 {
2901 int ret_val;
2902 struct megasas_instance *instance;
2903
2904 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2905
2906 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2907 scmd->cmnd[0], scmd->retries);
2908
2909 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2910 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2911 return FAILED;
2912 }
2913
2914 ret_val = megasas_wait_for_outstanding(instance);
2915 if (ret_val == SUCCESS)
2916 dev_notice(&instance->pdev->dev, "reset successful\n");
2917 else
2918 dev_err(&instance->pdev->dev, "failed to do reset\n");
2919
2920 return ret_val;
2921 }
2922
2923 /**
2924 * megasas_reset_timer - quiesce the adapter if required
2925 * @scmd: scsi cmnd
2926 *
2927 * Sets the FW busy flag and reduces the host->can_queue if the
2928 * cmd has not been completed within the timeout period.
2929 */
2930 static enum
megasas_reset_timer(struct scsi_cmnd * scmd)2931 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2932 {
2933 struct megasas_instance *instance;
2934 unsigned long flags;
2935
2936 if (time_after(jiffies, scmd->jiffies_at_alloc +
2937 (scmd_timeout * 2) * HZ)) {
2938 return BLK_EH_DONE;
2939 }
2940
2941 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2942 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2943 /* FW is busy, throttle IO */
2944 spin_lock_irqsave(instance->host->host_lock, flags);
2945
2946 instance->host->can_queue = instance->throttlequeuedepth;
2947 instance->last_time = jiffies;
2948 instance->flag |= MEGASAS_FW_BUSY;
2949
2950 spin_unlock_irqrestore(instance->host->host_lock, flags);
2951 }
2952 return BLK_EH_RESET_TIMER;
2953 }
2954
2955 /**
2956 * megasas_dump - This function will print hexdump of provided buffer.
2957 * @buf: Buffer to be dumped
2958 * @sz: Size in bytes
2959 * @format: Different formats of dumping e.g. format=n will
2960 * cause only 'n' 32 bit words to be dumped in a single
2961 * line.
2962 */
2963 inline void
megasas_dump(void * buf,int sz,int format)2964 megasas_dump(void *buf, int sz, int format)
2965 {
2966 int i;
2967 __le32 *buf_loc = (__le32 *)buf;
2968
2969 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2970 if ((i % format) == 0) {
2971 if (i != 0)
2972 printk(KERN_CONT "\n");
2973 printk(KERN_CONT "%08x: ", (i * 4));
2974 }
2975 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2976 }
2977 printk(KERN_CONT "\n");
2978 }
2979
2980 /**
2981 * megasas_dump_reg_set - This function will print hexdump of register set
2982 * @reg_set: Register set to be dumped
2983 */
2984 inline void
megasas_dump_reg_set(void __iomem * reg_set)2985 megasas_dump_reg_set(void __iomem *reg_set)
2986 {
2987 unsigned int i, sz = 256;
2988 u32 __iomem *reg = (u32 __iomem *)reg_set;
2989
2990 for (i = 0; i < (sz / sizeof(u32)); i++)
2991 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2992 }
2993
2994 /**
2995 * megasas_dump_fusion_io - This function will print key details
2996 * of SCSI IO
2997 * @scmd: SCSI command pointer of SCSI IO
2998 */
2999 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3000 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3001 {
3002 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3003 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3004 struct megasas_instance *instance;
3005
3006 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3007
3008 scmd_printk(KERN_INFO, scmd,
3009 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3010 scmd, scmd->retries, scmd->allowed);
3011 scsi_print_command(scmd);
3012
3013 if (cmd) {
3014 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3015 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3016 scmd_printk(KERN_INFO, scmd,
3017 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3018 req_desc->SCSIIO.RequestFlags,
3019 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3020 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3021
3022 printk(KERN_INFO "IO request frame:\n");
3023 megasas_dump(cmd->io_request,
3024 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3025 printk(KERN_INFO "Chain frame:\n");
3026 megasas_dump(cmd->sg_frame,
3027 instance->max_chain_frame_sz, 8);
3028 }
3029
3030 }
3031
3032 /*
3033 * megasas_dump_sys_regs - This function will dump system registers through
3034 * sysfs.
3035 * @reg_set: Pointer to System register set.
3036 * @buf: Buffer to which output is to be written.
3037 * @return: Number of bytes written to buffer.
3038 */
3039 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3040 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3041 {
3042 unsigned int i, sz = 256;
3043 int bytes_wrote = 0;
3044 char *loc = (char *)buf;
3045 u32 __iomem *reg = (u32 __iomem *)reg_set;
3046
3047 for (i = 0; i < sz / sizeof(u32); i++) {
3048 bytes_wrote += scnprintf(loc + bytes_wrote,
3049 PAGE_SIZE - bytes_wrote,
3050 "%08x: %08x\n", (i * 4),
3051 readl(®[i]));
3052 }
3053 return bytes_wrote;
3054 }
3055
3056 /**
3057 * megasas_reset_bus_host - Bus & host reset handler entry point
3058 * @scmd: Mid-layer SCSI command
3059 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3060 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3061 {
3062 int ret;
3063 struct megasas_instance *instance;
3064
3065 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3066
3067 scmd_printk(KERN_INFO, scmd,
3068 "OCR is requested due to IO timeout!!\n");
3069
3070 scmd_printk(KERN_INFO, scmd,
3071 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3072 scmd->device->host->shost_state,
3073 scsi_host_busy(scmd->device->host),
3074 atomic_read(&instance->fw_outstanding));
3075 /*
3076 * First wait for all commands to complete
3077 */
3078 if (instance->adapter_type == MFI_SERIES) {
3079 ret = megasas_generic_reset(scmd);
3080 } else {
3081 megasas_dump_fusion_io(scmd);
3082 ret = megasas_reset_fusion(scmd->device->host,
3083 SCSIIO_TIMEOUT_OCR);
3084 }
3085
3086 return ret;
3087 }
3088
3089 /**
3090 * megasas_task_abort - Issues task abort request to firmware
3091 * (supported only for fusion adapters)
3092 * @scmd: SCSI command pointer
3093 */
megasas_task_abort(struct scsi_cmnd * scmd)3094 static int megasas_task_abort(struct scsi_cmnd *scmd)
3095 {
3096 int ret;
3097 struct megasas_instance *instance;
3098
3099 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3100
3101 if (instance->adapter_type != MFI_SERIES)
3102 ret = megasas_task_abort_fusion(scmd);
3103 else {
3104 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3105 ret = FAILED;
3106 }
3107
3108 return ret;
3109 }
3110
3111 /**
3112 * megasas_reset_target: Issues target reset request to firmware
3113 * (supported only for fusion adapters)
3114 * @scmd: SCSI command pointer
3115 */
megasas_reset_target(struct scsi_cmnd * scmd)3116 static int megasas_reset_target(struct scsi_cmnd *scmd)
3117 {
3118 int ret;
3119 struct megasas_instance *instance;
3120
3121 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3122
3123 if (instance->adapter_type != MFI_SERIES)
3124 ret = megasas_reset_target_fusion(scmd);
3125 else {
3126 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3127 ret = FAILED;
3128 }
3129
3130 return ret;
3131 }
3132
3133 /**
3134 * megasas_bios_param - Returns disk geometry for a disk
3135 * @sdev: device handle
3136 * @bdev: block device
3137 * @capacity: drive capacity
3138 * @geom: geometry parameters
3139 */
3140 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3141 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3142 sector_t capacity, int geom[])
3143 {
3144 int heads;
3145 int sectors;
3146 sector_t cylinders;
3147 unsigned long tmp;
3148
3149 /* Default heads (64) & sectors (32) */
3150 heads = 64;
3151 sectors = 32;
3152
3153 tmp = heads * sectors;
3154 cylinders = capacity;
3155
3156 sector_div(cylinders, tmp);
3157
3158 /*
3159 * Handle extended translation size for logical drives > 1Gb
3160 */
3161
3162 if (capacity >= 0x200000) {
3163 heads = 255;
3164 sectors = 63;
3165 tmp = heads*sectors;
3166 cylinders = capacity;
3167 sector_div(cylinders, tmp);
3168 }
3169
3170 geom[0] = heads;
3171 geom[1] = sectors;
3172 geom[2] = cylinders;
3173
3174 return 0;
3175 }
3176
megasas_map_queues(struct Scsi_Host * shost)3177 static void megasas_map_queues(struct Scsi_Host *shost)
3178 {
3179 struct megasas_instance *instance;
3180 int qoff = 0, offset;
3181 struct blk_mq_queue_map *map;
3182
3183 instance = (struct megasas_instance *)shost->hostdata;
3184
3185 if (shost->nr_hw_queues == 1)
3186 return;
3187
3188 offset = instance->low_latency_index_start;
3189
3190 /* Setup Default hctx */
3191 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3192 map->nr_queues = instance->msix_vectors - offset;
3193 map->queue_offset = 0;
3194 blk_mq_pci_map_queues(map, instance->pdev, offset);
3195 qoff += map->nr_queues;
3196 offset += map->nr_queues;
3197
3198 /* we never use READ queue, so can't cheat blk-mq */
3199 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3200
3201 /* Setup Poll hctx */
3202 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3203 map->nr_queues = instance->iopoll_q_count;
3204 if (map->nr_queues) {
3205 /*
3206 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3207 * affinity), so use the regular blk-mq cpu mapping
3208 */
3209 map->queue_offset = qoff;
3210 blk_mq_map_queues(map);
3211 }
3212 }
3213
3214 static void megasas_aen_polling(struct work_struct *work);
3215
3216 /**
3217 * megasas_service_aen - Processes an event notification
3218 * @instance: Adapter soft state
3219 * @cmd: AEN command completed by the ISR
3220 *
3221 * For AEN, driver sends a command down to FW that is held by the FW till an
3222 * event occurs. When an event of interest occurs, FW completes the command
3223 * that it was previously holding.
3224 *
3225 * This routines sends SIGIO signal to processes that have registered with the
3226 * driver for AEN.
3227 */
3228 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3229 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3230 {
3231 unsigned long flags;
3232
3233 /*
3234 * Don't signal app if it is just an aborted previously registered aen
3235 */
3236 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3237 spin_lock_irqsave(&poll_aen_lock, flags);
3238 megasas_poll_wait_aen = 1;
3239 spin_unlock_irqrestore(&poll_aen_lock, flags);
3240 wake_up(&megasas_poll_wait);
3241 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3242 }
3243 else
3244 cmd->abort_aen = 0;
3245
3246 instance->aen_cmd = NULL;
3247
3248 megasas_return_cmd(instance, cmd);
3249
3250 if ((instance->unload == 0) &&
3251 ((instance->issuepend_done == 1))) {
3252 struct megasas_aen_event *ev;
3253
3254 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3255 if (!ev) {
3256 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3257 } else {
3258 ev->instance = instance;
3259 instance->ev = ev;
3260 INIT_DELAYED_WORK(&ev->hotplug_work,
3261 megasas_aen_polling);
3262 schedule_delayed_work(&ev->hotplug_work, 0);
3263 }
3264 }
3265 }
3266
3267 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3268 fw_crash_buffer_store(struct device *cdev,
3269 struct device_attribute *attr, const char *buf, size_t count)
3270 {
3271 struct Scsi_Host *shost = class_to_shost(cdev);
3272 struct megasas_instance *instance =
3273 (struct megasas_instance *) shost->hostdata;
3274 int val = 0;
3275 unsigned long flags;
3276
3277 if (kstrtoint(buf, 0, &val) != 0)
3278 return -EINVAL;
3279
3280 spin_lock_irqsave(&instance->crashdump_lock, flags);
3281 instance->fw_crash_buffer_offset = val;
3282 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3283 return strlen(buf);
3284 }
3285
3286 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3287 fw_crash_buffer_show(struct device *cdev,
3288 struct device_attribute *attr, char *buf)
3289 {
3290 struct Scsi_Host *shost = class_to_shost(cdev);
3291 struct megasas_instance *instance =
3292 (struct megasas_instance *) shost->hostdata;
3293 u32 size;
3294 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3295 unsigned long chunk_left_bytes;
3296 unsigned long src_addr;
3297 unsigned long flags;
3298 u32 buff_offset;
3299
3300 spin_lock_irqsave(&instance->crashdump_lock, flags);
3301 buff_offset = instance->fw_crash_buffer_offset;
3302 if (!instance->crash_dump_buf &&
3303 !((instance->fw_crash_state == AVAILABLE) ||
3304 (instance->fw_crash_state == COPYING))) {
3305 dev_err(&instance->pdev->dev,
3306 "Firmware crash dump is not available\n");
3307 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3308 return -EINVAL;
3309 }
3310
3311 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3312 dev_err(&instance->pdev->dev,
3313 "Firmware crash dump offset is out of range\n");
3314 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3315 return 0;
3316 }
3317
3318 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3319 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3320 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3321 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3322
3323 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3324 (buff_offset % dmachunk);
3325 memcpy(buf, (void *)src_addr, size);
3326 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3327
3328 return size;
3329 }
3330
3331 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3332 fw_crash_buffer_size_show(struct device *cdev,
3333 struct device_attribute *attr, char *buf)
3334 {
3335 struct Scsi_Host *shost = class_to_shost(cdev);
3336 struct megasas_instance *instance =
3337 (struct megasas_instance *) shost->hostdata;
3338
3339 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3340 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3341 }
3342
3343 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3344 fw_crash_state_store(struct device *cdev,
3345 struct device_attribute *attr, const char *buf, size_t count)
3346 {
3347 struct Scsi_Host *shost = class_to_shost(cdev);
3348 struct megasas_instance *instance =
3349 (struct megasas_instance *) shost->hostdata;
3350 int val = 0;
3351 unsigned long flags;
3352
3353 if (kstrtoint(buf, 0, &val) != 0)
3354 return -EINVAL;
3355
3356 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3357 dev_err(&instance->pdev->dev, "application updates invalid "
3358 "firmware crash state\n");
3359 return -EINVAL;
3360 }
3361
3362 instance->fw_crash_state = val;
3363
3364 if ((val == COPIED) || (val == COPY_ERROR)) {
3365 spin_lock_irqsave(&instance->crashdump_lock, flags);
3366 megasas_free_host_crash_buffer(instance);
3367 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3368 if (val == COPY_ERROR)
3369 dev_info(&instance->pdev->dev, "application failed to "
3370 "copy Firmware crash dump\n");
3371 else
3372 dev_info(&instance->pdev->dev, "Firmware crash dump "
3373 "copied successfully\n");
3374 }
3375 return strlen(buf);
3376 }
3377
3378 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3379 fw_crash_state_show(struct device *cdev,
3380 struct device_attribute *attr, char *buf)
3381 {
3382 struct Scsi_Host *shost = class_to_shost(cdev);
3383 struct megasas_instance *instance =
3384 (struct megasas_instance *) shost->hostdata;
3385
3386 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3387 }
3388
3389 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3390 page_size_show(struct device *cdev,
3391 struct device_attribute *attr, char *buf)
3392 {
3393 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3394 }
3395
3396 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3397 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3398 char *buf)
3399 {
3400 struct Scsi_Host *shost = class_to_shost(cdev);
3401 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3402
3403 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3404 }
3405
3406 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3407 fw_cmds_outstanding_show(struct device *cdev,
3408 struct device_attribute *attr, char *buf)
3409 {
3410 struct Scsi_Host *shost = class_to_shost(cdev);
3411 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3412
3413 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3414 }
3415
3416 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3417 enable_sdev_max_qd_show(struct device *cdev,
3418 struct device_attribute *attr, char *buf)
3419 {
3420 struct Scsi_Host *shost = class_to_shost(cdev);
3421 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3422
3423 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3424 }
3425
3426 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3427 enable_sdev_max_qd_store(struct device *cdev,
3428 struct device_attribute *attr, const char *buf, size_t count)
3429 {
3430 struct Scsi_Host *shost = class_to_shost(cdev);
3431 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3432 u32 val = 0;
3433 bool is_target_prop;
3434 int ret_target_prop = DCMD_FAILED;
3435 struct scsi_device *sdev;
3436
3437 if (kstrtou32(buf, 0, &val) != 0) {
3438 pr_err("megasas: could not set enable_sdev_max_qd\n");
3439 return -EINVAL;
3440 }
3441
3442 mutex_lock(&instance->reset_mutex);
3443 if (val)
3444 instance->enable_sdev_max_qd = true;
3445 else
3446 instance->enable_sdev_max_qd = false;
3447
3448 shost_for_each_device(sdev, shost) {
3449 ret_target_prop = megasas_get_target_prop(instance, sdev);
3450 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3451 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3452 }
3453 mutex_unlock(&instance->reset_mutex);
3454
3455 return strlen(buf);
3456 }
3457
3458 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3459 dump_system_regs_show(struct device *cdev,
3460 struct device_attribute *attr, char *buf)
3461 {
3462 struct Scsi_Host *shost = class_to_shost(cdev);
3463 struct megasas_instance *instance =
3464 (struct megasas_instance *)shost->hostdata;
3465
3466 return megasas_dump_sys_regs(instance->reg_set, buf);
3467 }
3468
3469 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3470 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3471 char *buf)
3472 {
3473 struct Scsi_Host *shost = class_to_shost(cdev);
3474 struct megasas_instance *instance =
3475 (struct megasas_instance *)shost->hostdata;
3476
3477 return snprintf(buf, PAGE_SIZE, "%ld\n",
3478 (unsigned long)instance->map_id);
3479 }
3480
3481 static DEVICE_ATTR_RW(fw_crash_buffer);
3482 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3483 static DEVICE_ATTR_RW(fw_crash_state);
3484 static DEVICE_ATTR_RO(page_size);
3485 static DEVICE_ATTR_RO(ldio_outstanding);
3486 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3487 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3488 static DEVICE_ATTR_RO(dump_system_regs);
3489 static DEVICE_ATTR_RO(raid_map_id);
3490
3491 static struct attribute *megaraid_host_attrs[] = {
3492 &dev_attr_fw_crash_buffer_size.attr,
3493 &dev_attr_fw_crash_buffer.attr,
3494 &dev_attr_fw_crash_state.attr,
3495 &dev_attr_page_size.attr,
3496 &dev_attr_ldio_outstanding.attr,
3497 &dev_attr_fw_cmds_outstanding.attr,
3498 &dev_attr_enable_sdev_max_qd.attr,
3499 &dev_attr_dump_system_regs.attr,
3500 &dev_attr_raid_map_id.attr,
3501 NULL,
3502 };
3503
3504 ATTRIBUTE_GROUPS(megaraid_host);
3505
3506 /*
3507 * Scsi host template for megaraid_sas driver
3508 */
3509 static struct scsi_host_template megasas_template = {
3510
3511 .module = THIS_MODULE,
3512 .name = "Avago SAS based MegaRAID driver",
3513 .proc_name = "megaraid_sas",
3514 .slave_configure = megasas_slave_configure,
3515 .slave_alloc = megasas_slave_alloc,
3516 .slave_destroy = megasas_slave_destroy,
3517 .queuecommand = megasas_queue_command,
3518 .eh_target_reset_handler = megasas_reset_target,
3519 .eh_abort_handler = megasas_task_abort,
3520 .eh_host_reset_handler = megasas_reset_bus_host,
3521 .eh_timed_out = megasas_reset_timer,
3522 .shost_groups = megaraid_host_groups,
3523 .bios_param = megasas_bios_param,
3524 .map_queues = megasas_map_queues,
3525 .mq_poll = megasas_blk_mq_poll,
3526 .change_queue_depth = scsi_change_queue_depth,
3527 .max_segment_size = 0xffffffff,
3528 .cmd_size = sizeof(struct megasas_cmd_priv),
3529 };
3530
3531 /**
3532 * megasas_complete_int_cmd - Completes an internal command
3533 * @instance: Adapter soft state
3534 * @cmd: Command to be completed
3535 *
3536 * The megasas_issue_blocked_cmd() function waits for a command to complete
3537 * after it issues a command. This function wakes up that waiting routine by
3538 * calling wake_up() on the wait queue.
3539 */
3540 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3541 megasas_complete_int_cmd(struct megasas_instance *instance,
3542 struct megasas_cmd *cmd)
3543 {
3544 if (cmd->cmd_status_drv == DCMD_INIT)
3545 cmd->cmd_status_drv =
3546 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3547 DCMD_SUCCESS : DCMD_FAILED;
3548
3549 wake_up(&instance->int_cmd_wait_q);
3550 }
3551
3552 /**
3553 * megasas_complete_abort - Completes aborting a command
3554 * @instance: Adapter soft state
3555 * @cmd: Cmd that was issued to abort another cmd
3556 *
3557 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3558 * after it issues an abort on a previously issued command. This function
3559 * wakes up all functions waiting on the same wait queue.
3560 */
3561 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3562 megasas_complete_abort(struct megasas_instance *instance,
3563 struct megasas_cmd *cmd)
3564 {
3565 if (cmd->sync_cmd) {
3566 cmd->sync_cmd = 0;
3567 cmd->cmd_status_drv = DCMD_SUCCESS;
3568 wake_up(&instance->abort_cmd_wait_q);
3569 }
3570 }
3571
3572 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3573 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3574 {
3575 uint i;
3576
3577 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3578 if (instance->ld_ids_prev[i] != 0xff &&
3579 instance->ld_ids_from_raidmap[i] == 0xff) {
3580 if (megasas_dbg_lvl & LD_PD_DEBUG)
3581 dev_info(&instance->pdev->dev,
3582 "LD target ID %d removed from RAID map\n", i);
3583 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3584 }
3585 }
3586 }
3587
3588 /**
3589 * megasas_complete_cmd - Completes a command
3590 * @instance: Adapter soft state
3591 * @cmd: Command to be completed
3592 * @alt_status: If non-zero, use this value as status to
3593 * SCSI mid-layer instead of the value returned
3594 * by the FW. This should be used if caller wants
3595 * an alternate status (as in the case of aborted
3596 * commands)
3597 */
3598 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3599 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3600 u8 alt_status)
3601 {
3602 int exception = 0;
3603 struct megasas_header *hdr = &cmd->frame->hdr;
3604 unsigned long flags;
3605 struct fusion_context *fusion = instance->ctrl_context;
3606 u32 opcode, status;
3607
3608 /* flag for the retry reset */
3609 cmd->retry_for_fw_reset = 0;
3610
3611 if (cmd->scmd)
3612 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3613
3614 switch (hdr->cmd) {
3615 case MFI_CMD_INVALID:
3616 /* Some older 1068 controller FW may keep a pended
3617 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3618 when booting the kdump kernel. Ignore this command to
3619 prevent a kernel panic on shutdown of the kdump kernel. */
3620 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3621 "completed\n");
3622 dev_warn(&instance->pdev->dev, "If you have a controller "
3623 "other than PERC5, please upgrade your firmware\n");
3624 break;
3625 case MFI_CMD_PD_SCSI_IO:
3626 case MFI_CMD_LD_SCSI_IO:
3627
3628 /*
3629 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3630 * issued either through an IO path or an IOCTL path. If it
3631 * was via IOCTL, we will send it to internal completion.
3632 */
3633 if (cmd->sync_cmd) {
3634 cmd->sync_cmd = 0;
3635 megasas_complete_int_cmd(instance, cmd);
3636 break;
3637 }
3638 fallthrough;
3639
3640 case MFI_CMD_LD_READ:
3641 case MFI_CMD_LD_WRITE:
3642
3643 if (alt_status) {
3644 cmd->scmd->result = alt_status << 16;
3645 exception = 1;
3646 }
3647
3648 if (exception) {
3649
3650 atomic_dec(&instance->fw_outstanding);
3651
3652 scsi_dma_unmap(cmd->scmd);
3653 scsi_done(cmd->scmd);
3654 megasas_return_cmd(instance, cmd);
3655
3656 break;
3657 }
3658
3659 switch (hdr->cmd_status) {
3660
3661 case MFI_STAT_OK:
3662 cmd->scmd->result = DID_OK << 16;
3663 break;
3664
3665 case MFI_STAT_SCSI_IO_FAILED:
3666 case MFI_STAT_LD_INIT_IN_PROGRESS:
3667 cmd->scmd->result =
3668 (DID_ERROR << 16) | hdr->scsi_status;
3669 break;
3670
3671 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3672
3673 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3674
3675 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3676 memset(cmd->scmd->sense_buffer, 0,
3677 SCSI_SENSE_BUFFERSIZE);
3678 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3679 hdr->sense_len);
3680 }
3681
3682 break;
3683
3684 case MFI_STAT_LD_OFFLINE:
3685 case MFI_STAT_DEVICE_NOT_FOUND:
3686 cmd->scmd->result = DID_BAD_TARGET << 16;
3687 break;
3688
3689 default:
3690 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3691 hdr->cmd_status);
3692 cmd->scmd->result = DID_ERROR << 16;
3693 break;
3694 }
3695
3696 atomic_dec(&instance->fw_outstanding);
3697
3698 scsi_dma_unmap(cmd->scmd);
3699 scsi_done(cmd->scmd);
3700 megasas_return_cmd(instance, cmd);
3701
3702 break;
3703
3704 case MFI_CMD_SMP:
3705 case MFI_CMD_STP:
3706 case MFI_CMD_NVME:
3707 case MFI_CMD_TOOLBOX:
3708 megasas_complete_int_cmd(instance, cmd);
3709 break;
3710
3711 case MFI_CMD_DCMD:
3712 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3713 /* Check for LD map update */
3714 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3715 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3716 fusion->fast_path_io = 0;
3717 spin_lock_irqsave(instance->host->host_lock, flags);
3718 status = cmd->frame->hdr.cmd_status;
3719 instance->map_update_cmd = NULL;
3720 if (status != MFI_STAT_OK) {
3721 if (status != MFI_STAT_NOT_FOUND)
3722 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3723 cmd->frame->hdr.cmd_status);
3724 else {
3725 megasas_return_cmd(instance, cmd);
3726 spin_unlock_irqrestore(
3727 instance->host->host_lock,
3728 flags);
3729 break;
3730 }
3731 }
3732
3733 megasas_return_cmd(instance, cmd);
3734
3735 /*
3736 * Set fast path IO to ZERO.
3737 * Validate Map will set proper value.
3738 * Meanwhile all IOs will go as LD IO.
3739 */
3740 if (status == MFI_STAT_OK &&
3741 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3742 instance->map_id++;
3743 fusion->fast_path_io = 1;
3744 } else {
3745 fusion->fast_path_io = 0;
3746 }
3747
3748 if (instance->adapter_type >= INVADER_SERIES)
3749 megasas_set_ld_removed_by_fw(instance);
3750
3751 megasas_sync_map_info(instance);
3752 spin_unlock_irqrestore(instance->host->host_lock,
3753 flags);
3754
3755 break;
3756 }
3757 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3758 opcode == MR_DCMD_CTRL_EVENT_GET) {
3759 spin_lock_irqsave(&poll_aen_lock, flags);
3760 megasas_poll_wait_aen = 0;
3761 spin_unlock_irqrestore(&poll_aen_lock, flags);
3762 }
3763
3764 /* FW has an updated PD sequence */
3765 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3766 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3767
3768 spin_lock_irqsave(instance->host->host_lock, flags);
3769 status = cmd->frame->hdr.cmd_status;
3770 instance->jbod_seq_cmd = NULL;
3771 megasas_return_cmd(instance, cmd);
3772
3773 if (status == MFI_STAT_OK) {
3774 instance->pd_seq_map_id++;
3775 /* Re-register a pd sync seq num cmd */
3776 if (megasas_sync_pd_seq_num(instance, true))
3777 instance->use_seqnum_jbod_fp = false;
3778 } else
3779 instance->use_seqnum_jbod_fp = false;
3780
3781 spin_unlock_irqrestore(instance->host->host_lock, flags);
3782 break;
3783 }
3784
3785 /*
3786 * See if got an event notification
3787 */
3788 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3789 megasas_service_aen(instance, cmd);
3790 else
3791 megasas_complete_int_cmd(instance, cmd);
3792
3793 break;
3794
3795 case MFI_CMD_ABORT:
3796 /*
3797 * Cmd issued to abort another cmd returned
3798 */
3799 megasas_complete_abort(instance, cmd);
3800 break;
3801
3802 default:
3803 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3804 hdr->cmd);
3805 megasas_complete_int_cmd(instance, cmd);
3806 break;
3807 }
3808 }
3809
3810 /**
3811 * megasas_issue_pending_cmds_again - issue all pending cmds
3812 * in FW again because of the fw reset
3813 * @instance: Adapter soft state
3814 */
3815 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3816 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3817 {
3818 struct megasas_cmd *cmd;
3819 struct list_head clist_local;
3820 union megasas_evt_class_locale class_locale;
3821 unsigned long flags;
3822 u32 seq_num;
3823
3824 INIT_LIST_HEAD(&clist_local);
3825 spin_lock_irqsave(&instance->hba_lock, flags);
3826 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3827 spin_unlock_irqrestore(&instance->hba_lock, flags);
3828
3829 while (!list_empty(&clist_local)) {
3830 cmd = list_entry((&clist_local)->next,
3831 struct megasas_cmd, list);
3832 list_del_init(&cmd->list);
3833
3834 if (cmd->sync_cmd || cmd->scmd) {
3835 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3836 "detected to be pending while HBA reset\n",
3837 cmd, cmd->scmd, cmd->sync_cmd);
3838
3839 cmd->retry_for_fw_reset++;
3840
3841 if (cmd->retry_for_fw_reset == 3) {
3842 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3843 "was tried multiple times during reset."
3844 "Shutting down the HBA\n",
3845 cmd, cmd->scmd, cmd->sync_cmd);
3846 instance->instancet->disable_intr(instance);
3847 atomic_set(&instance->fw_reset_no_pci_access, 1);
3848 megaraid_sas_kill_hba(instance);
3849 return;
3850 }
3851 }
3852
3853 if (cmd->sync_cmd == 1) {
3854 if (cmd->scmd) {
3855 dev_notice(&instance->pdev->dev, "unexpected"
3856 "cmd attached to internal command!\n");
3857 }
3858 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3859 "on the internal reset queue,"
3860 "issue it again.\n", cmd);
3861 cmd->cmd_status_drv = DCMD_INIT;
3862 instance->instancet->fire_cmd(instance,
3863 cmd->frame_phys_addr,
3864 0, instance->reg_set);
3865 } else if (cmd->scmd) {
3866 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3867 "detected on the internal queue, issue again.\n",
3868 cmd, cmd->scmd->cmnd[0]);
3869
3870 atomic_inc(&instance->fw_outstanding);
3871 instance->instancet->fire_cmd(instance,
3872 cmd->frame_phys_addr,
3873 cmd->frame_count-1, instance->reg_set);
3874 } else {
3875 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3876 "internal reset defer list while re-issue!!\n",
3877 cmd);
3878 }
3879 }
3880
3881 if (instance->aen_cmd) {
3882 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3883 megasas_return_cmd(instance, instance->aen_cmd);
3884
3885 instance->aen_cmd = NULL;
3886 }
3887
3888 /*
3889 * Initiate AEN (Asynchronous Event Notification)
3890 */
3891 seq_num = instance->last_seq_num;
3892 class_locale.members.reserved = 0;
3893 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3894 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3895
3896 megasas_register_aen(instance, seq_num, class_locale.word);
3897 }
3898
3899 /*
3900 * Move the internal reset pending commands to a deferred queue.
3901 *
3902 * We move the commands pending at internal reset time to a
3903 * pending queue. This queue would be flushed after successful
3904 * completion of the internal reset sequence. if the internal reset
3905 * did not complete in time, the kernel reset handler would flush
3906 * these commands.
3907 */
3908 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3909 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3910 {
3911 struct megasas_cmd *cmd;
3912 int i;
3913 u16 max_cmd = instance->max_fw_cmds;
3914 u32 defer_index;
3915 unsigned long flags;
3916
3917 defer_index = 0;
3918 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3919 for (i = 0; i < max_cmd; i++) {
3920 cmd = instance->cmd_list[i];
3921 if (cmd->sync_cmd == 1 || cmd->scmd) {
3922 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3923 "on the defer queue as internal\n",
3924 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3925
3926 if (!list_empty(&cmd->list)) {
3927 dev_notice(&instance->pdev->dev, "ERROR while"
3928 " moving this cmd:%p, %d %p, it was"
3929 "discovered on some list?\n",
3930 cmd, cmd->sync_cmd, cmd->scmd);
3931
3932 list_del_init(&cmd->list);
3933 }
3934 defer_index++;
3935 list_add_tail(&cmd->list,
3936 &instance->internal_reset_pending_q);
3937 }
3938 }
3939 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3940 }
3941
3942
3943 static void
process_fw_state_change_wq(struct work_struct * work)3944 process_fw_state_change_wq(struct work_struct *work)
3945 {
3946 struct megasas_instance *instance =
3947 container_of(work, struct megasas_instance, work_init);
3948 u32 wait;
3949 unsigned long flags;
3950
3951 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3952 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3953 atomic_read(&instance->adprecovery));
3954 return ;
3955 }
3956
3957 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3958 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3959 "state, restarting it...\n");
3960
3961 instance->instancet->disable_intr(instance);
3962 atomic_set(&instance->fw_outstanding, 0);
3963
3964 atomic_set(&instance->fw_reset_no_pci_access, 1);
3965 instance->instancet->adp_reset(instance, instance->reg_set);
3966 atomic_set(&instance->fw_reset_no_pci_access, 0);
3967
3968 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3969 "initiating next stage...\n");
3970
3971 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3972 "state 2 starting...\n");
3973
3974 /* waiting for about 20 second before start the second init */
3975 for (wait = 0; wait < 30; wait++) {
3976 msleep(1000);
3977 }
3978
3979 if (megasas_transition_to_ready(instance, 1)) {
3980 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3981
3982 atomic_set(&instance->fw_reset_no_pci_access, 1);
3983 megaraid_sas_kill_hba(instance);
3984 return ;
3985 }
3986
3987 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3988 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3989 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3990 ) {
3991 *instance->consumer = *instance->producer;
3992 } else {
3993 *instance->consumer = 0;
3994 *instance->producer = 0;
3995 }
3996
3997 megasas_issue_init_mfi(instance);
3998
3999 spin_lock_irqsave(&instance->hba_lock, flags);
4000 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4001 spin_unlock_irqrestore(&instance->hba_lock, flags);
4002 instance->instancet->enable_intr(instance);
4003
4004 megasas_issue_pending_cmds_again(instance);
4005 instance->issuepend_done = 1;
4006 }
4007 }
4008
4009 /**
4010 * megasas_deplete_reply_queue - Processes all completed commands
4011 * @instance: Adapter soft state
4012 * @alt_status: Alternate status to be returned to
4013 * SCSI mid-layer instead of the status
4014 * returned by the FW
4015 * Note: this must be called with hba lock held
4016 */
4017 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4018 megasas_deplete_reply_queue(struct megasas_instance *instance,
4019 u8 alt_status)
4020 {
4021 u32 mfiStatus;
4022 u32 fw_state;
4023
4024 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4025 return IRQ_HANDLED;
4026
4027 mfiStatus = instance->instancet->clear_intr(instance);
4028 if (mfiStatus == 0) {
4029 /* Hardware may not set outbound_intr_status in MSI-X mode */
4030 if (!instance->msix_vectors)
4031 return IRQ_NONE;
4032 }
4033
4034 instance->mfiStatus = mfiStatus;
4035
4036 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4037 fw_state = instance->instancet->read_fw_status_reg(
4038 instance) & MFI_STATE_MASK;
4039
4040 if (fw_state != MFI_STATE_FAULT) {
4041 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4042 fw_state);
4043 }
4044
4045 if ((fw_state == MFI_STATE_FAULT) &&
4046 (instance->disableOnlineCtrlReset == 0)) {
4047 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4048
4049 if ((instance->pdev->device ==
4050 PCI_DEVICE_ID_LSI_SAS1064R) ||
4051 (instance->pdev->device ==
4052 PCI_DEVICE_ID_DELL_PERC5) ||
4053 (instance->pdev->device ==
4054 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4055
4056 *instance->consumer =
4057 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4058 }
4059
4060
4061 instance->instancet->disable_intr(instance);
4062 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4063 instance->issuepend_done = 0;
4064
4065 atomic_set(&instance->fw_outstanding, 0);
4066 megasas_internal_reset_defer_cmds(instance);
4067
4068 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4069 fw_state, atomic_read(&instance->adprecovery));
4070
4071 schedule_work(&instance->work_init);
4072 return IRQ_HANDLED;
4073
4074 } else {
4075 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4076 fw_state, instance->disableOnlineCtrlReset);
4077 }
4078 }
4079
4080 tasklet_schedule(&instance->isr_tasklet);
4081 return IRQ_HANDLED;
4082 }
4083
4084 /**
4085 * megasas_isr - isr entry point
4086 * @irq: IRQ number
4087 * @devp: IRQ context address
4088 */
megasas_isr(int irq,void * devp)4089 static irqreturn_t megasas_isr(int irq, void *devp)
4090 {
4091 struct megasas_irq_context *irq_context = devp;
4092 struct megasas_instance *instance = irq_context->instance;
4093 unsigned long flags;
4094 irqreturn_t rc;
4095
4096 if (atomic_read(&instance->fw_reset_no_pci_access))
4097 return IRQ_HANDLED;
4098
4099 spin_lock_irqsave(&instance->hba_lock, flags);
4100 rc = megasas_deplete_reply_queue(instance, DID_OK);
4101 spin_unlock_irqrestore(&instance->hba_lock, flags);
4102
4103 return rc;
4104 }
4105
4106 /**
4107 * megasas_transition_to_ready - Move the FW to READY state
4108 * @instance: Adapter soft state
4109 * @ocr: Adapter reset state
4110 *
4111 * During the initialization, FW passes can potentially be in any one of
4112 * several possible states. If the FW in operational, waiting-for-handshake
4113 * states, driver must take steps to bring it to ready state. Otherwise, it
4114 * has to wait for the ready state.
4115 */
4116 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4117 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4118 {
4119 int i;
4120 u8 max_wait;
4121 u32 fw_state;
4122 u32 abs_state, curr_abs_state;
4123
4124 abs_state = instance->instancet->read_fw_status_reg(instance);
4125 fw_state = abs_state & MFI_STATE_MASK;
4126
4127 if (fw_state != MFI_STATE_READY)
4128 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4129 " state\n");
4130
4131 while (fw_state != MFI_STATE_READY) {
4132
4133 switch (fw_state) {
4134
4135 case MFI_STATE_FAULT:
4136 dev_printk(KERN_ERR, &instance->pdev->dev,
4137 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4138 abs_state & MFI_STATE_FAULT_CODE,
4139 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4140 if (ocr) {
4141 max_wait = MEGASAS_RESET_WAIT_TIME;
4142 break;
4143 } else {
4144 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4145 megasas_dump_reg_set(instance->reg_set);
4146 return -ENODEV;
4147 }
4148
4149 case MFI_STATE_WAIT_HANDSHAKE:
4150 /*
4151 * Set the CLR bit in inbound doorbell
4152 */
4153 if ((instance->pdev->device ==
4154 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4155 (instance->pdev->device ==
4156 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4157 (instance->adapter_type != MFI_SERIES))
4158 writel(
4159 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4160 &instance->reg_set->doorbell);
4161 else
4162 writel(
4163 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4164 &instance->reg_set->inbound_doorbell);
4165
4166 max_wait = MEGASAS_RESET_WAIT_TIME;
4167 break;
4168
4169 case MFI_STATE_BOOT_MESSAGE_PENDING:
4170 if ((instance->pdev->device ==
4171 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4172 (instance->pdev->device ==
4173 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4174 (instance->adapter_type != MFI_SERIES))
4175 writel(MFI_INIT_HOTPLUG,
4176 &instance->reg_set->doorbell);
4177 else
4178 writel(MFI_INIT_HOTPLUG,
4179 &instance->reg_set->inbound_doorbell);
4180
4181 max_wait = MEGASAS_RESET_WAIT_TIME;
4182 break;
4183
4184 case MFI_STATE_OPERATIONAL:
4185 /*
4186 * Bring it to READY state; assuming max wait 10 secs
4187 */
4188 instance->instancet->disable_intr(instance);
4189 if ((instance->pdev->device ==
4190 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4191 (instance->pdev->device ==
4192 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4193 (instance->adapter_type != MFI_SERIES)) {
4194 writel(MFI_RESET_FLAGS,
4195 &instance->reg_set->doorbell);
4196
4197 if (instance->adapter_type != MFI_SERIES) {
4198 for (i = 0; i < (10 * 1000); i += 20) {
4199 if (megasas_readl(
4200 instance,
4201 &instance->
4202 reg_set->
4203 doorbell) & 1)
4204 msleep(20);
4205 else
4206 break;
4207 }
4208 }
4209 } else
4210 writel(MFI_RESET_FLAGS,
4211 &instance->reg_set->inbound_doorbell);
4212
4213 max_wait = MEGASAS_RESET_WAIT_TIME;
4214 break;
4215
4216 case MFI_STATE_UNDEFINED:
4217 /*
4218 * This state should not last for more than 2 seconds
4219 */
4220 max_wait = MEGASAS_RESET_WAIT_TIME;
4221 break;
4222
4223 case MFI_STATE_BB_INIT:
4224 max_wait = MEGASAS_RESET_WAIT_TIME;
4225 break;
4226
4227 case MFI_STATE_FW_INIT:
4228 max_wait = MEGASAS_RESET_WAIT_TIME;
4229 break;
4230
4231 case MFI_STATE_FW_INIT_2:
4232 max_wait = MEGASAS_RESET_WAIT_TIME;
4233 break;
4234
4235 case MFI_STATE_DEVICE_SCAN:
4236 max_wait = MEGASAS_RESET_WAIT_TIME;
4237 break;
4238
4239 case MFI_STATE_FLUSH_CACHE:
4240 max_wait = MEGASAS_RESET_WAIT_TIME;
4241 break;
4242
4243 default:
4244 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4245 fw_state);
4246 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4247 megasas_dump_reg_set(instance->reg_set);
4248 return -ENODEV;
4249 }
4250
4251 /*
4252 * The cur_state should not last for more than max_wait secs
4253 */
4254 for (i = 0; i < max_wait * 50; i++) {
4255 curr_abs_state = instance->instancet->
4256 read_fw_status_reg(instance);
4257
4258 if (abs_state == curr_abs_state) {
4259 msleep(20);
4260 } else
4261 break;
4262 }
4263
4264 /*
4265 * Return error if fw_state hasn't changed after max_wait
4266 */
4267 if (curr_abs_state == abs_state) {
4268 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4269 "in %d secs\n", fw_state, max_wait);
4270 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4271 megasas_dump_reg_set(instance->reg_set);
4272 return -ENODEV;
4273 }
4274
4275 abs_state = curr_abs_state;
4276 fw_state = curr_abs_state & MFI_STATE_MASK;
4277 }
4278 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4279
4280 return 0;
4281 }
4282
4283 /**
4284 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4285 * @instance: Adapter soft state
4286 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4287 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4288 {
4289 int i;
4290 u16 max_cmd = instance->max_mfi_cmds;
4291 struct megasas_cmd *cmd;
4292
4293 if (!instance->frame_dma_pool)
4294 return;
4295
4296 /*
4297 * Return all frames to pool
4298 */
4299 for (i = 0; i < max_cmd; i++) {
4300
4301 cmd = instance->cmd_list[i];
4302
4303 if (cmd->frame)
4304 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4305 cmd->frame_phys_addr);
4306
4307 if (cmd->sense)
4308 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4309 cmd->sense_phys_addr);
4310 }
4311
4312 /*
4313 * Now destroy the pool itself
4314 */
4315 dma_pool_destroy(instance->frame_dma_pool);
4316 dma_pool_destroy(instance->sense_dma_pool);
4317
4318 instance->frame_dma_pool = NULL;
4319 instance->sense_dma_pool = NULL;
4320 }
4321
4322 /**
4323 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4324 * @instance: Adapter soft state
4325 *
4326 * Each command packet has an embedded DMA memory buffer that is used for
4327 * filling MFI frame and the SG list that immediately follows the frame. This
4328 * function creates those DMA memory buffers for each command packet by using
4329 * PCI pool facility.
4330 */
megasas_create_frame_pool(struct megasas_instance * instance)4331 static int megasas_create_frame_pool(struct megasas_instance *instance)
4332 {
4333 int i;
4334 u16 max_cmd;
4335 u32 frame_count;
4336 struct megasas_cmd *cmd;
4337
4338 max_cmd = instance->max_mfi_cmds;
4339
4340 /*
4341 * For MFI controllers.
4342 * max_num_sge = 60
4343 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4344 * Total 960 byte (15 MFI frame of 64 byte)
4345 *
4346 * Fusion adapter require only 3 extra frame.
4347 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4348 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4349 * Total 192 byte (3 MFI frame of 64 byte)
4350 */
4351 frame_count = (instance->adapter_type == MFI_SERIES) ?
4352 (15 + 1) : (3 + 1);
4353 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4354 /*
4355 * Use DMA pool facility provided by PCI layer
4356 */
4357 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4358 &instance->pdev->dev,
4359 instance->mfi_frame_size, 256, 0);
4360
4361 if (!instance->frame_dma_pool) {
4362 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4363 return -ENOMEM;
4364 }
4365
4366 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4367 &instance->pdev->dev, 128,
4368 4, 0);
4369
4370 if (!instance->sense_dma_pool) {
4371 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4372
4373 dma_pool_destroy(instance->frame_dma_pool);
4374 instance->frame_dma_pool = NULL;
4375
4376 return -ENOMEM;
4377 }
4378
4379 /*
4380 * Allocate and attach a frame to each of the commands in cmd_list.
4381 * By making cmd->index as the context instead of the &cmd, we can
4382 * always use 32bit context regardless of the architecture
4383 */
4384 for (i = 0; i < max_cmd; i++) {
4385
4386 cmd = instance->cmd_list[i];
4387
4388 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4389 GFP_KERNEL, &cmd->frame_phys_addr);
4390
4391 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4392 GFP_KERNEL, &cmd->sense_phys_addr);
4393
4394 /*
4395 * megasas_teardown_frame_pool() takes care of freeing
4396 * whatever has been allocated
4397 */
4398 if (!cmd->frame || !cmd->sense) {
4399 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4400 megasas_teardown_frame_pool(instance);
4401 return -ENOMEM;
4402 }
4403
4404 cmd->frame->io.context = cpu_to_le32(cmd->index);
4405 cmd->frame->io.pad_0 = 0;
4406 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4407 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4408 }
4409
4410 return 0;
4411 }
4412
4413 /**
4414 * megasas_free_cmds - Free all the cmds in the free cmd pool
4415 * @instance: Adapter soft state
4416 */
megasas_free_cmds(struct megasas_instance * instance)4417 void megasas_free_cmds(struct megasas_instance *instance)
4418 {
4419 int i;
4420
4421 /* First free the MFI frame pool */
4422 megasas_teardown_frame_pool(instance);
4423
4424 /* Free all the commands in the cmd_list */
4425 for (i = 0; i < instance->max_mfi_cmds; i++)
4426
4427 kfree(instance->cmd_list[i]);
4428
4429 /* Free the cmd_list buffer itself */
4430 kfree(instance->cmd_list);
4431 instance->cmd_list = NULL;
4432
4433 INIT_LIST_HEAD(&instance->cmd_pool);
4434 }
4435
4436 /**
4437 * megasas_alloc_cmds - Allocates the command packets
4438 * @instance: Adapter soft state
4439 *
4440 * Each command that is issued to the FW, whether IO commands from the OS or
4441 * internal commands like IOCTLs, are wrapped in local data structure called
4442 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4443 * the FW.
4444 *
4445 * Each frame has a 32-bit field called context (tag). This context is used
4446 * to get back the megasas_cmd from the frame when a frame gets completed in
4447 * the ISR. Typically the address of the megasas_cmd itself would be used as
4448 * the context. But we wanted to keep the differences between 32 and 64 bit
4449 * systems to the mininum. We always use 32 bit integers for the context. In
4450 * this driver, the 32 bit values are the indices into an array cmd_list.
4451 * This array is used only to look up the megasas_cmd given the context. The
4452 * free commands themselves are maintained in a linked list called cmd_pool.
4453 */
megasas_alloc_cmds(struct megasas_instance * instance)4454 int megasas_alloc_cmds(struct megasas_instance *instance)
4455 {
4456 int i;
4457 int j;
4458 u16 max_cmd;
4459 struct megasas_cmd *cmd;
4460
4461 max_cmd = instance->max_mfi_cmds;
4462
4463 /*
4464 * instance->cmd_list is an array of struct megasas_cmd pointers.
4465 * Allocate the dynamic array first and then allocate individual
4466 * commands.
4467 */
4468 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4469
4470 if (!instance->cmd_list) {
4471 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4472 return -ENOMEM;
4473 }
4474
4475 for (i = 0; i < max_cmd; i++) {
4476 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4477 GFP_KERNEL);
4478
4479 if (!instance->cmd_list[i]) {
4480
4481 for (j = 0; j < i; j++)
4482 kfree(instance->cmd_list[j]);
4483
4484 kfree(instance->cmd_list);
4485 instance->cmd_list = NULL;
4486
4487 return -ENOMEM;
4488 }
4489 }
4490
4491 for (i = 0; i < max_cmd; i++) {
4492 cmd = instance->cmd_list[i];
4493 memset(cmd, 0, sizeof(struct megasas_cmd));
4494 cmd->index = i;
4495 cmd->scmd = NULL;
4496 cmd->instance = instance;
4497
4498 list_add_tail(&cmd->list, &instance->cmd_pool);
4499 }
4500
4501 /*
4502 * Create a frame pool and assign one frame to each cmd
4503 */
4504 if (megasas_create_frame_pool(instance)) {
4505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4506 megasas_free_cmds(instance);
4507 return -ENOMEM;
4508 }
4509
4510 return 0;
4511 }
4512
4513 /*
4514 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4515 * @instance: Adapter soft state
4516 *
4517 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4518 * or FW is not under OCR.
4519 */
4520 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4521 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4522
4523 if (instance->adapter_type == MFI_SERIES)
4524 return KILL_ADAPTER;
4525 else if (instance->unload ||
4526 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4527 &instance->reset_flags))
4528 return IGNORE_TIMEOUT;
4529 else
4530 return INITIATE_OCR;
4531 }
4532
4533 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4534 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4535 {
4536 int ret;
4537 struct megasas_cmd *cmd;
4538 struct megasas_dcmd_frame *dcmd;
4539
4540 struct MR_PRIV_DEVICE *mr_device_priv_data;
4541 u16 device_id = 0;
4542
4543 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4544 cmd = megasas_get_cmd(instance);
4545
4546 if (!cmd) {
4547 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4548 return;
4549 }
4550
4551 dcmd = &cmd->frame->dcmd;
4552
4553 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4554 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4555
4556 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4557 dcmd->cmd = MFI_CMD_DCMD;
4558 dcmd->cmd_status = 0xFF;
4559 dcmd->sge_count = 1;
4560 dcmd->flags = MFI_FRAME_DIR_READ;
4561 dcmd->timeout = 0;
4562 dcmd->pad_0 = 0;
4563 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4564 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4565
4566 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4567 sizeof(struct MR_PD_INFO));
4568
4569 if ((instance->adapter_type != MFI_SERIES) &&
4570 !instance->mask_interrupts)
4571 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4572 else
4573 ret = megasas_issue_polled(instance, cmd);
4574
4575 switch (ret) {
4576 case DCMD_SUCCESS:
4577 mr_device_priv_data = sdev->hostdata;
4578 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4579 mr_device_priv_data->interface_type =
4580 instance->pd_info->state.ddf.pdType.intf;
4581 break;
4582
4583 case DCMD_TIMEOUT:
4584
4585 switch (dcmd_timeout_ocr_possible(instance)) {
4586 case INITIATE_OCR:
4587 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4588 mutex_unlock(&instance->reset_mutex);
4589 megasas_reset_fusion(instance->host,
4590 MFI_IO_TIMEOUT_OCR);
4591 mutex_lock(&instance->reset_mutex);
4592 break;
4593 case KILL_ADAPTER:
4594 megaraid_sas_kill_hba(instance);
4595 break;
4596 case IGNORE_TIMEOUT:
4597 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4598 __func__, __LINE__);
4599 break;
4600 }
4601
4602 break;
4603 }
4604
4605 if (ret != DCMD_TIMEOUT)
4606 megasas_return_cmd(instance, cmd);
4607
4608 return;
4609 }
4610 /*
4611 * megasas_get_pd_list_info - Returns FW's pd_list structure
4612 * @instance: Adapter soft state
4613 * @pd_list: pd_list structure
4614 *
4615 * Issues an internal command (DCMD) to get the FW's controller PD
4616 * list structure. This information is mainly used to find out SYSTEM
4617 * supported by the FW.
4618 */
4619 static int
megasas_get_pd_list(struct megasas_instance * instance)4620 megasas_get_pd_list(struct megasas_instance *instance)
4621 {
4622 int ret = 0, pd_index = 0;
4623 struct megasas_cmd *cmd;
4624 struct megasas_dcmd_frame *dcmd;
4625 struct MR_PD_LIST *ci;
4626 struct MR_PD_ADDRESS *pd_addr;
4627
4628 if (instance->pd_list_not_supported) {
4629 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4630 "not supported by firmware\n");
4631 return ret;
4632 }
4633
4634 ci = instance->pd_list_buf;
4635
4636 cmd = megasas_get_cmd(instance);
4637
4638 if (!cmd) {
4639 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4640 return -ENOMEM;
4641 }
4642
4643 dcmd = &cmd->frame->dcmd;
4644
4645 memset(ci, 0, sizeof(*ci));
4646 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4647
4648 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4649 dcmd->mbox.b[1] = 0;
4650 dcmd->cmd = MFI_CMD_DCMD;
4651 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4652 dcmd->sge_count = 1;
4653 dcmd->flags = MFI_FRAME_DIR_READ;
4654 dcmd->timeout = 0;
4655 dcmd->pad_0 = 0;
4656 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4657 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4658
4659 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4660 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4661
4662 if ((instance->adapter_type != MFI_SERIES) &&
4663 !instance->mask_interrupts)
4664 ret = megasas_issue_blocked_cmd(instance, cmd,
4665 MFI_IO_TIMEOUT_SECS);
4666 else
4667 ret = megasas_issue_polled(instance, cmd);
4668
4669 switch (ret) {
4670 case DCMD_FAILED:
4671 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4672 "failed/not supported by firmware\n");
4673
4674 if (instance->adapter_type != MFI_SERIES)
4675 megaraid_sas_kill_hba(instance);
4676 else
4677 instance->pd_list_not_supported = 1;
4678 break;
4679 case DCMD_TIMEOUT:
4680
4681 switch (dcmd_timeout_ocr_possible(instance)) {
4682 case INITIATE_OCR:
4683 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4684 /*
4685 * DCMD failed from AEN path.
4686 * AEN path already hold reset_mutex to avoid PCI access
4687 * while OCR is in progress.
4688 */
4689 mutex_unlock(&instance->reset_mutex);
4690 megasas_reset_fusion(instance->host,
4691 MFI_IO_TIMEOUT_OCR);
4692 mutex_lock(&instance->reset_mutex);
4693 break;
4694 case KILL_ADAPTER:
4695 megaraid_sas_kill_hba(instance);
4696 break;
4697 case IGNORE_TIMEOUT:
4698 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4699 __func__, __LINE__);
4700 break;
4701 }
4702
4703 break;
4704
4705 case DCMD_SUCCESS:
4706 pd_addr = ci->addr;
4707 if (megasas_dbg_lvl & LD_PD_DEBUG)
4708 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4709 __func__, le32_to_cpu(ci->count));
4710
4711 if ((le32_to_cpu(ci->count) >
4712 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4713 break;
4714
4715 memset(instance->local_pd_list, 0,
4716 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4717
4718 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4719 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4720 le16_to_cpu(pd_addr->deviceId);
4721 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4722 pd_addr->scsiDevType;
4723 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4724 MR_PD_STATE_SYSTEM;
4725 if (megasas_dbg_lvl & LD_PD_DEBUG)
4726 dev_info(&instance->pdev->dev,
4727 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4728 pd_index, le16_to_cpu(pd_addr->deviceId),
4729 pd_addr->scsiDevType);
4730 pd_addr++;
4731 }
4732
4733 memcpy(instance->pd_list, instance->local_pd_list,
4734 sizeof(instance->pd_list));
4735 break;
4736
4737 }
4738
4739 if (ret != DCMD_TIMEOUT)
4740 megasas_return_cmd(instance, cmd);
4741
4742 return ret;
4743 }
4744
4745 /*
4746 * megasas_get_ld_list_info - Returns FW's ld_list structure
4747 * @instance: Adapter soft state
4748 * @ld_list: ld_list structure
4749 *
4750 * Issues an internal command (DCMD) to get the FW's controller PD
4751 * list structure. This information is mainly used to find out SYSTEM
4752 * supported by the FW.
4753 */
4754 static int
megasas_get_ld_list(struct megasas_instance * instance)4755 megasas_get_ld_list(struct megasas_instance *instance)
4756 {
4757 int ret = 0, ld_index = 0, ids = 0;
4758 struct megasas_cmd *cmd;
4759 struct megasas_dcmd_frame *dcmd;
4760 struct MR_LD_LIST *ci;
4761 dma_addr_t ci_h = 0;
4762 u32 ld_count;
4763
4764 ci = instance->ld_list_buf;
4765 ci_h = instance->ld_list_buf_h;
4766
4767 cmd = megasas_get_cmd(instance);
4768
4769 if (!cmd) {
4770 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4771 return -ENOMEM;
4772 }
4773
4774 dcmd = &cmd->frame->dcmd;
4775
4776 memset(ci, 0, sizeof(*ci));
4777 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4778
4779 if (instance->supportmax256vd)
4780 dcmd->mbox.b[0] = 1;
4781 dcmd->cmd = MFI_CMD_DCMD;
4782 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4783 dcmd->sge_count = 1;
4784 dcmd->flags = MFI_FRAME_DIR_READ;
4785 dcmd->timeout = 0;
4786 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4787 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4788 dcmd->pad_0 = 0;
4789
4790 megasas_set_dma_settings(instance, dcmd, ci_h,
4791 sizeof(struct MR_LD_LIST));
4792
4793 if ((instance->adapter_type != MFI_SERIES) &&
4794 !instance->mask_interrupts)
4795 ret = megasas_issue_blocked_cmd(instance, cmd,
4796 MFI_IO_TIMEOUT_SECS);
4797 else
4798 ret = megasas_issue_polled(instance, cmd);
4799
4800 ld_count = le32_to_cpu(ci->ldCount);
4801
4802 switch (ret) {
4803 case DCMD_FAILED:
4804 megaraid_sas_kill_hba(instance);
4805 break;
4806 case DCMD_TIMEOUT:
4807
4808 switch (dcmd_timeout_ocr_possible(instance)) {
4809 case INITIATE_OCR:
4810 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4811 /*
4812 * DCMD failed from AEN path.
4813 * AEN path already hold reset_mutex to avoid PCI access
4814 * while OCR is in progress.
4815 */
4816 mutex_unlock(&instance->reset_mutex);
4817 megasas_reset_fusion(instance->host,
4818 MFI_IO_TIMEOUT_OCR);
4819 mutex_lock(&instance->reset_mutex);
4820 break;
4821 case KILL_ADAPTER:
4822 megaraid_sas_kill_hba(instance);
4823 break;
4824 case IGNORE_TIMEOUT:
4825 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4826 __func__, __LINE__);
4827 break;
4828 }
4829
4830 break;
4831
4832 case DCMD_SUCCESS:
4833 if (megasas_dbg_lvl & LD_PD_DEBUG)
4834 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4835 __func__, ld_count);
4836
4837 if (ld_count > instance->fw_supported_vd_count)
4838 break;
4839
4840 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4841
4842 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4843 if (ci->ldList[ld_index].state != 0) {
4844 ids = ci->ldList[ld_index].ref.targetId;
4845 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4846 if (megasas_dbg_lvl & LD_PD_DEBUG)
4847 dev_info(&instance->pdev->dev,
4848 "LD%d: targetID: 0x%03x\n",
4849 ld_index, ids);
4850 }
4851 }
4852
4853 break;
4854 }
4855
4856 if (ret != DCMD_TIMEOUT)
4857 megasas_return_cmd(instance, cmd);
4858
4859 return ret;
4860 }
4861
4862 /**
4863 * megasas_ld_list_query - Returns FW's ld_list structure
4864 * @instance: Adapter soft state
4865 * @query_type: ld_list structure type
4866 *
4867 * Issues an internal command (DCMD) to get the FW's controller PD
4868 * list structure. This information is mainly used to find out SYSTEM
4869 * supported by the FW.
4870 */
4871 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4872 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4873 {
4874 int ret = 0, ld_index = 0, ids = 0;
4875 struct megasas_cmd *cmd;
4876 struct megasas_dcmd_frame *dcmd;
4877 struct MR_LD_TARGETID_LIST *ci;
4878 dma_addr_t ci_h = 0;
4879 u32 tgtid_count;
4880
4881 ci = instance->ld_targetid_list_buf;
4882 ci_h = instance->ld_targetid_list_buf_h;
4883
4884 cmd = megasas_get_cmd(instance);
4885
4886 if (!cmd) {
4887 dev_warn(&instance->pdev->dev,
4888 "megasas_ld_list_query: Failed to get cmd\n");
4889 return -ENOMEM;
4890 }
4891
4892 dcmd = &cmd->frame->dcmd;
4893
4894 memset(ci, 0, sizeof(*ci));
4895 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4896
4897 dcmd->mbox.b[0] = query_type;
4898 if (instance->supportmax256vd)
4899 dcmd->mbox.b[2] = 1;
4900
4901 dcmd->cmd = MFI_CMD_DCMD;
4902 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4903 dcmd->sge_count = 1;
4904 dcmd->flags = MFI_FRAME_DIR_READ;
4905 dcmd->timeout = 0;
4906 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4907 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4908 dcmd->pad_0 = 0;
4909
4910 megasas_set_dma_settings(instance, dcmd, ci_h,
4911 sizeof(struct MR_LD_TARGETID_LIST));
4912
4913 if ((instance->adapter_type != MFI_SERIES) &&
4914 !instance->mask_interrupts)
4915 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4916 else
4917 ret = megasas_issue_polled(instance, cmd);
4918
4919 switch (ret) {
4920 case DCMD_FAILED:
4921 dev_info(&instance->pdev->dev,
4922 "DCMD not supported by firmware - %s %d\n",
4923 __func__, __LINE__);
4924 ret = megasas_get_ld_list(instance);
4925 break;
4926 case DCMD_TIMEOUT:
4927 switch (dcmd_timeout_ocr_possible(instance)) {
4928 case INITIATE_OCR:
4929 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4930 /*
4931 * DCMD failed from AEN path.
4932 * AEN path already hold reset_mutex to avoid PCI access
4933 * while OCR is in progress.
4934 */
4935 mutex_unlock(&instance->reset_mutex);
4936 megasas_reset_fusion(instance->host,
4937 MFI_IO_TIMEOUT_OCR);
4938 mutex_lock(&instance->reset_mutex);
4939 break;
4940 case KILL_ADAPTER:
4941 megaraid_sas_kill_hba(instance);
4942 break;
4943 case IGNORE_TIMEOUT:
4944 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4945 __func__, __LINE__);
4946 break;
4947 }
4948
4949 break;
4950 case DCMD_SUCCESS:
4951 tgtid_count = le32_to_cpu(ci->count);
4952
4953 if (megasas_dbg_lvl & LD_PD_DEBUG)
4954 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4955 __func__, tgtid_count);
4956
4957 if ((tgtid_count > (instance->fw_supported_vd_count)))
4958 break;
4959
4960 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4961 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4962 ids = ci->targetId[ld_index];
4963 instance->ld_ids[ids] = ci->targetId[ld_index];
4964 if (megasas_dbg_lvl & LD_PD_DEBUG)
4965 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4966 ld_index, ci->targetId[ld_index]);
4967 }
4968
4969 break;
4970 }
4971
4972 if (ret != DCMD_TIMEOUT)
4973 megasas_return_cmd(instance, cmd);
4974
4975 return ret;
4976 }
4977
4978 /**
4979 * megasas_host_device_list_query
4980 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4981 * dcmd.mbox - reserved
4982 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4983 * Desc: This DCMD will return the combined device list
4984 * Status: MFI_STAT_OK - List returned successfully
4985 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4986 * disabled
4987 * @instance: Adapter soft state
4988 * @is_probe: Driver probe check
4989 * Return: 0 if DCMD succeeded
4990 * non-zero if failed
4991 */
4992 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4993 megasas_host_device_list_query(struct megasas_instance *instance,
4994 bool is_probe)
4995 {
4996 int ret, i, target_id;
4997 struct megasas_cmd *cmd;
4998 struct megasas_dcmd_frame *dcmd;
4999 struct MR_HOST_DEVICE_LIST *ci;
5000 u32 count;
5001 dma_addr_t ci_h;
5002
5003 ci = instance->host_device_list_buf;
5004 ci_h = instance->host_device_list_buf_h;
5005
5006 cmd = megasas_get_cmd(instance);
5007
5008 if (!cmd) {
5009 dev_warn(&instance->pdev->dev,
5010 "%s: failed to get cmd\n",
5011 __func__);
5012 return -ENOMEM;
5013 }
5014
5015 dcmd = &cmd->frame->dcmd;
5016
5017 memset(ci, 0, sizeof(*ci));
5018 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5019
5020 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5021 dcmd->cmd = MFI_CMD_DCMD;
5022 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5023 dcmd->sge_count = 1;
5024 dcmd->flags = MFI_FRAME_DIR_READ;
5025 dcmd->timeout = 0;
5026 dcmd->pad_0 = 0;
5027 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5028 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5029
5030 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5031
5032 if (!instance->mask_interrupts) {
5033 ret = megasas_issue_blocked_cmd(instance, cmd,
5034 MFI_IO_TIMEOUT_SECS);
5035 } else {
5036 ret = megasas_issue_polled(instance, cmd);
5037 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5038 }
5039
5040 switch (ret) {
5041 case DCMD_SUCCESS:
5042 /* Fill the internal pd_list and ld_ids array based on
5043 * targetIds returned by FW
5044 */
5045 count = le32_to_cpu(ci->count);
5046
5047 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5048 break;
5049
5050 if (megasas_dbg_lvl & LD_PD_DEBUG)
5051 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5052 __func__, count);
5053
5054 memset(instance->local_pd_list, 0,
5055 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5056 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5057 for (i = 0; i < count; i++) {
5058 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5059 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5060 instance->local_pd_list[target_id].tid = target_id;
5061 instance->local_pd_list[target_id].driveType =
5062 ci->host_device_list[i].scsi_type;
5063 instance->local_pd_list[target_id].driveState =
5064 MR_PD_STATE_SYSTEM;
5065 if (megasas_dbg_lvl & LD_PD_DEBUG)
5066 dev_info(&instance->pdev->dev,
5067 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5068 i, target_id, ci->host_device_list[i].scsi_type);
5069 } else {
5070 instance->ld_ids[target_id] = target_id;
5071 if (megasas_dbg_lvl & LD_PD_DEBUG)
5072 dev_info(&instance->pdev->dev,
5073 "Device %d: LD targetID: 0x%03x\n",
5074 i, target_id);
5075 }
5076 }
5077
5078 memcpy(instance->pd_list, instance->local_pd_list,
5079 sizeof(instance->pd_list));
5080 break;
5081
5082 case DCMD_TIMEOUT:
5083 switch (dcmd_timeout_ocr_possible(instance)) {
5084 case INITIATE_OCR:
5085 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5086 mutex_unlock(&instance->reset_mutex);
5087 megasas_reset_fusion(instance->host,
5088 MFI_IO_TIMEOUT_OCR);
5089 mutex_lock(&instance->reset_mutex);
5090 break;
5091 case KILL_ADAPTER:
5092 megaraid_sas_kill_hba(instance);
5093 break;
5094 case IGNORE_TIMEOUT:
5095 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5096 __func__, __LINE__);
5097 break;
5098 }
5099 break;
5100 case DCMD_FAILED:
5101 dev_err(&instance->pdev->dev,
5102 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5103 __func__);
5104 break;
5105 }
5106
5107 if (ret != DCMD_TIMEOUT)
5108 megasas_return_cmd(instance, cmd);
5109
5110 return ret;
5111 }
5112
5113 /*
5114 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5115 * instance : Controller's instance
5116 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5117 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5118 {
5119 struct fusion_context *fusion;
5120 u32 ventura_map_sz = 0;
5121
5122 fusion = instance->ctrl_context;
5123 /* For MFI based controllers return dummy success */
5124 if (!fusion)
5125 return;
5126
5127 instance->supportmax256vd =
5128 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5129 /* Below is additional check to address future FW enhancement */
5130 if (instance->ctrl_info_buf->max_lds > 64)
5131 instance->supportmax256vd = 1;
5132
5133 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5134 * MEGASAS_MAX_DEV_PER_CHANNEL;
5135 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5136 * MEGASAS_MAX_DEV_PER_CHANNEL;
5137 if (instance->supportmax256vd) {
5138 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5139 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5140 } else {
5141 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5142 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5143 }
5144
5145 dev_info(&instance->pdev->dev,
5146 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5147 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5148 instance->ctrl_info_buf->max_lds);
5149
5150 if (instance->max_raid_mapsize) {
5151 ventura_map_sz = instance->max_raid_mapsize *
5152 MR_MIN_MAP_SIZE; /* 64k */
5153 fusion->current_map_sz = ventura_map_sz;
5154 fusion->max_map_sz = ventura_map_sz;
5155 } else {
5156 fusion->old_map_sz =
5157 struct_size((struct MR_FW_RAID_MAP *)0, ldSpanMap,
5158 instance->fw_supported_vd_count);
5159 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5160
5161 fusion->max_map_sz =
5162 max(fusion->old_map_sz, fusion->new_map_sz);
5163
5164 if (instance->supportmax256vd)
5165 fusion->current_map_sz = fusion->new_map_sz;
5166 else
5167 fusion->current_map_sz = fusion->old_map_sz;
5168 }
5169 /* irrespective of FW raid maps, driver raid map is constant */
5170 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5171 }
5172
5173 /*
5174 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5175 * dcmd.hdr.length - number of bytes to read
5176 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5177 * Desc: Fill in snapdump properties
5178 * Status: MFI_STAT_OK- Command successful
5179 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5180 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5181 {
5182 int ret = 0;
5183 struct megasas_cmd *cmd;
5184 struct megasas_dcmd_frame *dcmd;
5185 struct MR_SNAPDUMP_PROPERTIES *ci;
5186 dma_addr_t ci_h = 0;
5187
5188 ci = instance->snapdump_prop;
5189 ci_h = instance->snapdump_prop_h;
5190
5191 if (!ci)
5192 return;
5193
5194 cmd = megasas_get_cmd(instance);
5195
5196 if (!cmd) {
5197 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5198 return;
5199 }
5200
5201 dcmd = &cmd->frame->dcmd;
5202
5203 memset(ci, 0, sizeof(*ci));
5204 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5205
5206 dcmd->cmd = MFI_CMD_DCMD;
5207 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5208 dcmd->sge_count = 1;
5209 dcmd->flags = MFI_FRAME_DIR_READ;
5210 dcmd->timeout = 0;
5211 dcmd->pad_0 = 0;
5212 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5213 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5214
5215 megasas_set_dma_settings(instance, dcmd, ci_h,
5216 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5217
5218 if (!instance->mask_interrupts) {
5219 ret = megasas_issue_blocked_cmd(instance, cmd,
5220 MFI_IO_TIMEOUT_SECS);
5221 } else {
5222 ret = megasas_issue_polled(instance, cmd);
5223 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5224 }
5225
5226 switch (ret) {
5227 case DCMD_SUCCESS:
5228 instance->snapdump_wait_time =
5229 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5230 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5231 break;
5232
5233 case DCMD_TIMEOUT:
5234 switch (dcmd_timeout_ocr_possible(instance)) {
5235 case INITIATE_OCR:
5236 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5237 mutex_unlock(&instance->reset_mutex);
5238 megasas_reset_fusion(instance->host,
5239 MFI_IO_TIMEOUT_OCR);
5240 mutex_lock(&instance->reset_mutex);
5241 break;
5242 case KILL_ADAPTER:
5243 megaraid_sas_kill_hba(instance);
5244 break;
5245 case IGNORE_TIMEOUT:
5246 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5247 __func__, __LINE__);
5248 break;
5249 }
5250 }
5251
5252 if (ret != DCMD_TIMEOUT)
5253 megasas_return_cmd(instance, cmd);
5254 }
5255
5256 /**
5257 * megasas_get_ctrl_info - Returns FW's controller structure
5258 * @instance: Adapter soft state
5259 *
5260 * Issues an internal command (DCMD) to get the FW's controller structure.
5261 * This information is mainly used to find out the maximum IO transfer per
5262 * command supported by the FW.
5263 */
5264 int
megasas_get_ctrl_info(struct megasas_instance * instance)5265 megasas_get_ctrl_info(struct megasas_instance *instance)
5266 {
5267 int ret = 0;
5268 struct megasas_cmd *cmd;
5269 struct megasas_dcmd_frame *dcmd;
5270 struct megasas_ctrl_info *ci;
5271 dma_addr_t ci_h = 0;
5272
5273 ci = instance->ctrl_info_buf;
5274 ci_h = instance->ctrl_info_buf_h;
5275
5276 cmd = megasas_get_cmd(instance);
5277
5278 if (!cmd) {
5279 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5280 return -ENOMEM;
5281 }
5282
5283 dcmd = &cmd->frame->dcmd;
5284
5285 memset(ci, 0, sizeof(*ci));
5286 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5287
5288 dcmd->cmd = MFI_CMD_DCMD;
5289 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5290 dcmd->sge_count = 1;
5291 dcmd->flags = MFI_FRAME_DIR_READ;
5292 dcmd->timeout = 0;
5293 dcmd->pad_0 = 0;
5294 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5295 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5296 dcmd->mbox.b[0] = 1;
5297
5298 megasas_set_dma_settings(instance, dcmd, ci_h,
5299 sizeof(struct megasas_ctrl_info));
5300
5301 if ((instance->adapter_type != MFI_SERIES) &&
5302 !instance->mask_interrupts) {
5303 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5304 } else {
5305 ret = megasas_issue_polled(instance, cmd);
5306 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5307 }
5308
5309 switch (ret) {
5310 case DCMD_SUCCESS:
5311 /* Save required controller information in
5312 * CPU endianness format.
5313 */
5314 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5315 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5316 le32_to_cpus((u32 *)&ci->adapterOperations2);
5317 le32_to_cpus((u32 *)&ci->adapterOperations3);
5318 le16_to_cpus((u16 *)&ci->adapter_operations4);
5319 le32_to_cpus((u32 *)&ci->adapter_operations5);
5320
5321 /* Update the latest Ext VD info.
5322 * From Init path, store current firmware details.
5323 * From OCR path, detect any firmware properties changes.
5324 * in case of Firmware upgrade without system reboot.
5325 */
5326 megasas_update_ext_vd_details(instance);
5327 instance->support_seqnum_jbod_fp =
5328 ci->adapterOperations3.useSeqNumJbodFP;
5329 instance->support_morethan256jbod =
5330 ci->adapter_operations4.support_pd_map_target_id;
5331 instance->support_nvme_passthru =
5332 ci->adapter_operations4.support_nvme_passthru;
5333 instance->support_pci_lane_margining =
5334 ci->adapter_operations5.support_pci_lane_margining;
5335 instance->task_abort_tmo = ci->TaskAbortTO;
5336 instance->max_reset_tmo = ci->MaxResetTO;
5337
5338 /*Check whether controller is iMR or MR */
5339 instance->is_imr = (ci->memory_size ? 0 : 1);
5340
5341 instance->snapdump_wait_time =
5342 (ci->properties.on_off_properties2.enable_snap_dump ?
5343 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5344
5345 instance->enable_fw_dev_list =
5346 ci->properties.on_off_properties2.enable_fw_dev_list;
5347
5348 dev_info(&instance->pdev->dev,
5349 "controller type\t: %s(%dMB)\n",
5350 instance->is_imr ? "iMR" : "MR",
5351 le16_to_cpu(ci->memory_size));
5352
5353 instance->disableOnlineCtrlReset =
5354 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5355 instance->secure_jbod_support =
5356 ci->adapterOperations3.supportSecurityonJBOD;
5357 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5358 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5359 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5360 instance->secure_jbod_support ? "Yes" : "No");
5361 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5362 instance->support_nvme_passthru ? "Yes" : "No");
5363 dev_info(&instance->pdev->dev,
5364 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5365 instance->task_abort_tmo, instance->max_reset_tmo);
5366 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5367 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5368 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5369 instance->support_pci_lane_margining ? "Yes" : "No");
5370
5371 break;
5372
5373 case DCMD_TIMEOUT:
5374 switch (dcmd_timeout_ocr_possible(instance)) {
5375 case INITIATE_OCR:
5376 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5377 mutex_unlock(&instance->reset_mutex);
5378 megasas_reset_fusion(instance->host,
5379 MFI_IO_TIMEOUT_OCR);
5380 mutex_lock(&instance->reset_mutex);
5381 break;
5382 case KILL_ADAPTER:
5383 megaraid_sas_kill_hba(instance);
5384 break;
5385 case IGNORE_TIMEOUT:
5386 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5387 __func__, __LINE__);
5388 break;
5389 }
5390 break;
5391 case DCMD_FAILED:
5392 megaraid_sas_kill_hba(instance);
5393 break;
5394
5395 }
5396
5397 if (ret != DCMD_TIMEOUT)
5398 megasas_return_cmd(instance, cmd);
5399
5400 return ret;
5401 }
5402
5403 /*
5404 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5405 * to firmware
5406 *
5407 * @instance: Adapter soft state
5408 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5409 MR_CRASH_BUF_TURN_OFF = 0
5410 MR_CRASH_BUF_TURN_ON = 1
5411 * @return 0 on success non-zero on failure.
5412 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5413 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5414 * that driver supports crash dump feature. This DCMD will be sent only if
5415 * crash dump feature is supported by the FW.
5416 *
5417 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5418 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5419 u8 crash_buf_state)
5420 {
5421 int ret = 0;
5422 struct megasas_cmd *cmd;
5423 struct megasas_dcmd_frame *dcmd;
5424
5425 cmd = megasas_get_cmd(instance);
5426
5427 if (!cmd) {
5428 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5429 return -ENOMEM;
5430 }
5431
5432
5433 dcmd = &cmd->frame->dcmd;
5434
5435 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5436 dcmd->mbox.b[0] = crash_buf_state;
5437 dcmd->cmd = MFI_CMD_DCMD;
5438 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5439 dcmd->sge_count = 1;
5440 dcmd->flags = MFI_FRAME_DIR_NONE;
5441 dcmd->timeout = 0;
5442 dcmd->pad_0 = 0;
5443 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5444 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5445
5446 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5447 CRASH_DMA_BUF_SIZE);
5448
5449 if ((instance->adapter_type != MFI_SERIES) &&
5450 !instance->mask_interrupts)
5451 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5452 else
5453 ret = megasas_issue_polled(instance, cmd);
5454
5455 if (ret == DCMD_TIMEOUT) {
5456 switch (dcmd_timeout_ocr_possible(instance)) {
5457 case INITIATE_OCR:
5458 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5459 megasas_reset_fusion(instance->host,
5460 MFI_IO_TIMEOUT_OCR);
5461 break;
5462 case KILL_ADAPTER:
5463 megaraid_sas_kill_hba(instance);
5464 break;
5465 case IGNORE_TIMEOUT:
5466 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5467 __func__, __LINE__);
5468 break;
5469 }
5470 } else
5471 megasas_return_cmd(instance, cmd);
5472
5473 return ret;
5474 }
5475
5476 /**
5477 * megasas_issue_init_mfi - Initializes the FW
5478 * @instance: Adapter soft state
5479 *
5480 * Issues the INIT MFI cmd
5481 */
5482 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5483 megasas_issue_init_mfi(struct megasas_instance *instance)
5484 {
5485 __le32 context;
5486 struct megasas_cmd *cmd;
5487 struct megasas_init_frame *init_frame;
5488 struct megasas_init_queue_info *initq_info;
5489 dma_addr_t init_frame_h;
5490 dma_addr_t initq_info_h;
5491
5492 /*
5493 * Prepare a init frame. Note the init frame points to queue info
5494 * structure. Each frame has SGL allocated after first 64 bytes. For
5495 * this frame - since we don't need any SGL - we use SGL's space as
5496 * queue info structure
5497 *
5498 * We will not get a NULL command below. We just created the pool.
5499 */
5500 cmd = megasas_get_cmd(instance);
5501
5502 init_frame = (struct megasas_init_frame *)cmd->frame;
5503 initq_info = (struct megasas_init_queue_info *)
5504 ((unsigned long)init_frame + 64);
5505
5506 init_frame_h = cmd->frame_phys_addr;
5507 initq_info_h = init_frame_h + 64;
5508
5509 context = init_frame->context;
5510 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5511 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5512 init_frame->context = context;
5513
5514 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5515 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5516
5517 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5518 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5519
5520 init_frame->cmd = MFI_CMD_INIT;
5521 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5522 init_frame->queue_info_new_phys_addr_lo =
5523 cpu_to_le32(lower_32_bits(initq_info_h));
5524 init_frame->queue_info_new_phys_addr_hi =
5525 cpu_to_le32(upper_32_bits(initq_info_h));
5526
5527 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5528
5529 /*
5530 * disable the intr before firing the init frame to FW
5531 */
5532 instance->instancet->disable_intr(instance);
5533
5534 /*
5535 * Issue the init frame in polled mode
5536 */
5537
5538 if (megasas_issue_polled(instance, cmd)) {
5539 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5540 megasas_return_cmd(instance, cmd);
5541 goto fail_fw_init;
5542 }
5543
5544 megasas_return_cmd(instance, cmd);
5545
5546 return 0;
5547
5548 fail_fw_init:
5549 return -EINVAL;
5550 }
5551
5552 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5553 megasas_init_adapter_mfi(struct megasas_instance *instance)
5554 {
5555 u32 context_sz;
5556 u32 reply_q_sz;
5557
5558 /*
5559 * Get various operational parameters from status register
5560 */
5561 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5562 /*
5563 * Reduce the max supported cmds by 1. This is to ensure that the
5564 * reply_q_sz (1 more than the max cmd that driver may send)
5565 * does not exceed max cmds that the FW can support
5566 */
5567 instance->max_fw_cmds = instance->max_fw_cmds-1;
5568 instance->max_mfi_cmds = instance->max_fw_cmds;
5569 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5570 0x10;
5571 /*
5572 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5573 * are reserved for IOCTL + driver's internal DCMDs.
5574 */
5575 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5576 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5577 instance->max_scsi_cmds = (instance->max_fw_cmds -
5578 MEGASAS_SKINNY_INT_CMDS);
5579 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5580 } else {
5581 instance->max_scsi_cmds = (instance->max_fw_cmds -
5582 MEGASAS_INT_CMDS);
5583 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5584 }
5585
5586 instance->cur_can_queue = instance->max_scsi_cmds;
5587 /*
5588 * Create a pool of commands
5589 */
5590 if (megasas_alloc_cmds(instance))
5591 goto fail_alloc_cmds;
5592
5593 /*
5594 * Allocate memory for reply queue. Length of reply queue should
5595 * be _one_ more than the maximum commands handled by the firmware.
5596 *
5597 * Note: When FW completes commands, it places corresponding contex
5598 * values in this circular reply queue. This circular queue is a fairly
5599 * typical producer-consumer queue. FW is the producer (of completed
5600 * commands) and the driver is the consumer.
5601 */
5602 context_sz = sizeof(u32);
5603 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5604
5605 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5606 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5607
5608 if (!instance->reply_queue) {
5609 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5610 goto fail_reply_queue;
5611 }
5612
5613 if (megasas_issue_init_mfi(instance))
5614 goto fail_fw_init;
5615
5616 if (megasas_get_ctrl_info(instance)) {
5617 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5618 "Fail from %s %d\n", instance->unique_id,
5619 __func__, __LINE__);
5620 goto fail_fw_init;
5621 }
5622
5623 instance->fw_support_ieee = 0;
5624 instance->fw_support_ieee =
5625 (instance->instancet->read_fw_status_reg(instance) &
5626 0x04000000);
5627
5628 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5629 instance->fw_support_ieee);
5630
5631 if (instance->fw_support_ieee)
5632 instance->flag_ieee = 1;
5633
5634 return 0;
5635
5636 fail_fw_init:
5637
5638 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5639 instance->reply_queue, instance->reply_queue_h);
5640 fail_reply_queue:
5641 megasas_free_cmds(instance);
5642
5643 fail_alloc_cmds:
5644 return 1;
5645 }
5646
5647 static
megasas_setup_irq_poll(struct megasas_instance * instance)5648 void megasas_setup_irq_poll(struct megasas_instance *instance)
5649 {
5650 struct megasas_irq_context *irq_ctx;
5651 u32 count, i;
5652
5653 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5654
5655 /* Initialize IRQ poll */
5656 for (i = 0; i < count; i++) {
5657 irq_ctx = &instance->irq_context[i];
5658 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5659 irq_ctx->irq_poll_scheduled = false;
5660 irq_poll_init(&irq_ctx->irqpoll,
5661 instance->threshold_reply_count,
5662 megasas_irqpoll);
5663 }
5664 }
5665
5666 /*
5667 * megasas_setup_irqs_ioapic - register legacy interrupts.
5668 * @instance: Adapter soft state
5669 *
5670 * Do not enable interrupt, only setup ISRs.
5671 *
5672 * Return 0 on success.
5673 */
5674 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5675 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5676 {
5677 struct pci_dev *pdev;
5678
5679 pdev = instance->pdev;
5680 instance->irq_context[0].instance = instance;
5681 instance->irq_context[0].MSIxIndex = 0;
5682 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5683 "megasas", instance->host->host_no);
5684 if (request_irq(pci_irq_vector(pdev, 0),
5685 instance->instancet->service_isr, IRQF_SHARED,
5686 instance->irq_context->name, &instance->irq_context[0])) {
5687 dev_err(&instance->pdev->dev,
5688 "Failed to register IRQ from %s %d\n",
5689 __func__, __LINE__);
5690 return -1;
5691 }
5692 instance->perf_mode = MR_LATENCY_PERF_MODE;
5693 instance->low_latency_index_start = 0;
5694 return 0;
5695 }
5696
5697 /**
5698 * megasas_setup_irqs_msix - register MSI-x interrupts.
5699 * @instance: Adapter soft state
5700 * @is_probe: Driver probe check
5701 *
5702 * Do not enable interrupt, only setup ISRs.
5703 *
5704 * Return 0 on success.
5705 */
5706 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5707 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5708 {
5709 int i, j;
5710 struct pci_dev *pdev;
5711
5712 pdev = instance->pdev;
5713
5714 /* Try MSI-x */
5715 for (i = 0; i < instance->msix_vectors; i++) {
5716 instance->irq_context[i].instance = instance;
5717 instance->irq_context[i].MSIxIndex = i;
5718 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5719 "megasas", instance->host->host_no, i);
5720 if (request_irq(pci_irq_vector(pdev, i),
5721 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5722 &instance->irq_context[i])) {
5723 dev_err(&instance->pdev->dev,
5724 "Failed to register IRQ for vector %d.\n", i);
5725 for (j = 0; j < i; j++) {
5726 if (j < instance->low_latency_index_start)
5727 irq_update_affinity_hint(
5728 pci_irq_vector(pdev, j), NULL);
5729 free_irq(pci_irq_vector(pdev, j),
5730 &instance->irq_context[j]);
5731 }
5732 /* Retry irq register for IO_APIC*/
5733 instance->msix_vectors = 0;
5734 instance->msix_load_balance = false;
5735 if (is_probe) {
5736 pci_free_irq_vectors(instance->pdev);
5737 return megasas_setup_irqs_ioapic(instance);
5738 } else {
5739 return -1;
5740 }
5741 }
5742 }
5743
5744 return 0;
5745 }
5746
5747 /*
5748 * megasas_destroy_irqs- unregister interrupts.
5749 * @instance: Adapter soft state
5750 * return: void
5751 */
5752 static void
megasas_destroy_irqs(struct megasas_instance * instance)5753 megasas_destroy_irqs(struct megasas_instance *instance) {
5754
5755 int i;
5756 int count;
5757 struct megasas_irq_context *irq_ctx;
5758
5759 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5760 if (instance->adapter_type != MFI_SERIES) {
5761 for (i = 0; i < count; i++) {
5762 irq_ctx = &instance->irq_context[i];
5763 irq_poll_disable(&irq_ctx->irqpoll);
5764 }
5765 }
5766
5767 if (instance->msix_vectors)
5768 for (i = 0; i < instance->msix_vectors; i++) {
5769 if (i < instance->low_latency_index_start)
5770 irq_update_affinity_hint(
5771 pci_irq_vector(instance->pdev, i), NULL);
5772 free_irq(pci_irq_vector(instance->pdev, i),
5773 &instance->irq_context[i]);
5774 }
5775 else
5776 free_irq(pci_irq_vector(instance->pdev, 0),
5777 &instance->irq_context[0]);
5778 }
5779
5780 /**
5781 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5782 * @instance: Adapter soft state
5783 *
5784 * Return 0 on success.
5785 */
5786 void
megasas_setup_jbod_map(struct megasas_instance * instance)5787 megasas_setup_jbod_map(struct megasas_instance *instance)
5788 {
5789 int i;
5790 struct fusion_context *fusion = instance->ctrl_context;
5791 size_t pd_seq_map_sz;
5792
5793 pd_seq_map_sz = struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0, seq,
5794 MAX_PHYSICAL_DEVICES);
5795
5796 instance->use_seqnum_jbod_fp =
5797 instance->support_seqnum_jbod_fp;
5798 if (reset_devices || !fusion ||
5799 !instance->support_seqnum_jbod_fp) {
5800 dev_info(&instance->pdev->dev,
5801 "JBOD sequence map is disabled %s %d\n",
5802 __func__, __LINE__);
5803 instance->use_seqnum_jbod_fp = false;
5804 return;
5805 }
5806
5807 if (fusion->pd_seq_sync[0])
5808 goto skip_alloc;
5809
5810 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5811 fusion->pd_seq_sync[i] = dma_alloc_coherent
5812 (&instance->pdev->dev, pd_seq_map_sz,
5813 &fusion->pd_seq_phys[i], GFP_KERNEL);
5814 if (!fusion->pd_seq_sync[i]) {
5815 dev_err(&instance->pdev->dev,
5816 "Failed to allocate memory from %s %d\n",
5817 __func__, __LINE__);
5818 if (i == 1) {
5819 dma_free_coherent(&instance->pdev->dev,
5820 pd_seq_map_sz, fusion->pd_seq_sync[0],
5821 fusion->pd_seq_phys[0]);
5822 fusion->pd_seq_sync[0] = NULL;
5823 }
5824 instance->use_seqnum_jbod_fp = false;
5825 return;
5826 }
5827 }
5828
5829 skip_alloc:
5830 if (!megasas_sync_pd_seq_num(instance, false) &&
5831 !megasas_sync_pd_seq_num(instance, true))
5832 instance->use_seqnum_jbod_fp = true;
5833 else
5834 instance->use_seqnum_jbod_fp = false;
5835 }
5836
megasas_setup_reply_map(struct megasas_instance * instance)5837 static void megasas_setup_reply_map(struct megasas_instance *instance)
5838 {
5839 const struct cpumask *mask;
5840 unsigned int queue, cpu, low_latency_index_start;
5841
5842 low_latency_index_start = instance->low_latency_index_start;
5843
5844 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5845 mask = pci_irq_get_affinity(instance->pdev, queue);
5846 if (!mask)
5847 goto fallback;
5848
5849 for_each_cpu(cpu, mask)
5850 instance->reply_map[cpu] = queue;
5851 }
5852 return;
5853
5854 fallback:
5855 queue = low_latency_index_start;
5856 for_each_possible_cpu(cpu) {
5857 instance->reply_map[cpu] = queue;
5858 if (queue == (instance->msix_vectors - 1))
5859 queue = low_latency_index_start;
5860 else
5861 queue++;
5862 }
5863 }
5864
5865 /**
5866 * megasas_get_device_list - Get the PD and LD device list from FW.
5867 * @instance: Adapter soft state
5868 * @return: Success or failure
5869 *
5870 * Issue DCMDs to Firmware to get the PD and LD list.
5871 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5872 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5873 */
5874 static
megasas_get_device_list(struct megasas_instance * instance)5875 int megasas_get_device_list(struct megasas_instance *instance)
5876 {
5877 if (instance->enable_fw_dev_list) {
5878 if (megasas_host_device_list_query(instance, true))
5879 return FAILED;
5880 } else {
5881 if (megasas_get_pd_list(instance) < 0) {
5882 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5883 return FAILED;
5884 }
5885
5886 if (megasas_ld_list_query(instance,
5887 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5888 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5889 return FAILED;
5890 }
5891 }
5892
5893 return SUCCESS;
5894 }
5895
5896 /**
5897 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5898 * for high IOPS queues
5899 * @instance: Adapter soft state
5900 * return: void
5901 */
5902 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5903 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5904 {
5905 int i;
5906 unsigned int irq;
5907 const struct cpumask *mask;
5908
5909 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5910 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5911
5912 for (i = 0; i < instance->low_latency_index_start; i++) {
5913 irq = pci_irq_vector(instance->pdev, i);
5914 irq_set_affinity_and_hint(irq, mask);
5915 }
5916 }
5917 }
5918
5919 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5920 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5921 {
5922 int i, irq_flags;
5923 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5924 struct irq_affinity *descp = &desc;
5925
5926 irq_flags = PCI_IRQ_MSIX;
5927
5928 if (instance->smp_affinity_enable)
5929 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5930 else
5931 descp = NULL;
5932
5933 /* Do not allocate msix vectors for poll_queues.
5934 * msix_vectors is always within a range of FW supported reply queue.
5935 */
5936 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5937 instance->low_latency_index_start,
5938 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5939
5940 return i;
5941 }
5942
5943 /**
5944 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5945 * @instance: Adapter soft state
5946 * return: void
5947 */
5948 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5949 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5950 {
5951 int i;
5952 unsigned int num_msix_req;
5953
5954 instance->iopoll_q_count = 0;
5955 if ((instance->adapter_type != MFI_SERIES) &&
5956 poll_queues) {
5957
5958 instance->perf_mode = MR_LATENCY_PERF_MODE;
5959 instance->low_latency_index_start = 1;
5960
5961 /* reserve for default and non-mananged pre-vector. */
5962 if (instance->msix_vectors > (poll_queues + 2))
5963 instance->iopoll_q_count = poll_queues;
5964 else
5965 instance->iopoll_q_count = 0;
5966
5967 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5968 instance->msix_vectors = min(num_msix_req,
5969 instance->msix_vectors);
5970
5971 }
5972
5973 i = __megasas_alloc_irq_vectors(instance);
5974
5975 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5976 || instance->iopoll_q_count) &&
5977 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5978 if (instance->msix_vectors)
5979 pci_free_irq_vectors(instance->pdev);
5980 /* Disable Balanced IOPS mode and try realloc vectors */
5981 instance->perf_mode = MR_LATENCY_PERF_MODE;
5982 instance->low_latency_index_start = 1;
5983 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5984
5985 instance->msix_vectors = min(num_msix_req,
5986 instance->msix_vectors);
5987
5988 instance->iopoll_q_count = 0;
5989 i = __megasas_alloc_irq_vectors(instance);
5990
5991 }
5992
5993 dev_info(&instance->pdev->dev,
5994 "requested/available msix %d/%d poll_queue %d\n",
5995 instance->msix_vectors - instance->iopoll_q_count,
5996 i, instance->iopoll_q_count);
5997
5998 if (i > 0)
5999 instance->msix_vectors = i;
6000 else
6001 instance->msix_vectors = 0;
6002
6003 if (instance->smp_affinity_enable)
6004 megasas_set_high_iops_queue_affinity_and_hint(instance);
6005 }
6006
6007 /**
6008 * megasas_init_fw - Initializes the FW
6009 * @instance: Adapter soft state
6010 *
6011 * This is the main function for initializing firmware
6012 */
6013
megasas_init_fw(struct megasas_instance * instance)6014 static int megasas_init_fw(struct megasas_instance *instance)
6015 {
6016 u32 max_sectors_1;
6017 u32 max_sectors_2, tmp_sectors, msix_enable;
6018 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6019 resource_size_t base_addr;
6020 void *base_addr_phys;
6021 struct megasas_ctrl_info *ctrl_info = NULL;
6022 unsigned long bar_list;
6023 int i, j, loop;
6024 struct IOV_111 *iovPtr;
6025 struct fusion_context *fusion;
6026 bool intr_coalescing;
6027 unsigned int num_msix_req;
6028 u16 lnksta, speed;
6029
6030 fusion = instance->ctrl_context;
6031
6032 /* Find first memory bar */
6033 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6034 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6035 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6036 "megasas: LSI")) {
6037 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6038 return -EBUSY;
6039 }
6040
6041 base_addr = pci_resource_start(instance->pdev, instance->bar);
6042 instance->reg_set = ioremap(base_addr, 8192);
6043
6044 if (!instance->reg_set) {
6045 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6046 goto fail_ioremap;
6047 }
6048
6049 base_addr_phys = &base_addr;
6050 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6051 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6052 instance->bar, base_addr_phys, instance->reg_set);
6053
6054 if (instance->adapter_type != MFI_SERIES)
6055 instance->instancet = &megasas_instance_template_fusion;
6056 else {
6057 switch (instance->pdev->device) {
6058 case PCI_DEVICE_ID_LSI_SAS1078R:
6059 case PCI_DEVICE_ID_LSI_SAS1078DE:
6060 instance->instancet = &megasas_instance_template_ppc;
6061 break;
6062 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6063 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6064 instance->instancet = &megasas_instance_template_gen2;
6065 break;
6066 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6067 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6068 instance->instancet = &megasas_instance_template_skinny;
6069 break;
6070 case PCI_DEVICE_ID_LSI_SAS1064R:
6071 case PCI_DEVICE_ID_DELL_PERC5:
6072 default:
6073 instance->instancet = &megasas_instance_template_xscale;
6074 instance->pd_list_not_supported = 1;
6075 break;
6076 }
6077 }
6078
6079 if (megasas_transition_to_ready(instance, 0)) {
6080 dev_info(&instance->pdev->dev,
6081 "Failed to transition controller to ready from %s!\n",
6082 __func__);
6083 if (instance->adapter_type != MFI_SERIES) {
6084 status_reg = instance->instancet->read_fw_status_reg(
6085 instance);
6086 if (status_reg & MFI_RESET_ADAPTER) {
6087 if (megasas_adp_reset_wait_for_ready
6088 (instance, true, 0) == FAILED)
6089 goto fail_ready_state;
6090 } else {
6091 goto fail_ready_state;
6092 }
6093 } else {
6094 atomic_set(&instance->fw_reset_no_pci_access, 1);
6095 instance->instancet->adp_reset
6096 (instance, instance->reg_set);
6097 atomic_set(&instance->fw_reset_no_pci_access, 0);
6098
6099 /*waiting for about 30 second before retry*/
6100 ssleep(30);
6101
6102 if (megasas_transition_to_ready(instance, 0))
6103 goto fail_ready_state;
6104 }
6105
6106 dev_info(&instance->pdev->dev,
6107 "FW restarted successfully from %s!\n",
6108 __func__);
6109 }
6110
6111 megasas_init_ctrl_params(instance);
6112
6113 if (megasas_set_dma_mask(instance))
6114 goto fail_ready_state;
6115
6116 if (megasas_alloc_ctrl_mem(instance))
6117 goto fail_alloc_dma_buf;
6118
6119 if (megasas_alloc_ctrl_dma_buffers(instance))
6120 goto fail_alloc_dma_buf;
6121
6122 fusion = instance->ctrl_context;
6123
6124 if (instance->adapter_type >= VENTURA_SERIES) {
6125 scratch_pad_2 =
6126 megasas_readl(instance,
6127 &instance->reg_set->outbound_scratch_pad_2);
6128 instance->max_raid_mapsize = ((scratch_pad_2 >>
6129 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6130 MR_MAX_RAID_MAP_SIZE_MASK);
6131 }
6132
6133 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6134
6135 switch (instance->adapter_type) {
6136 case VENTURA_SERIES:
6137 fusion->pcie_bw_limitation = true;
6138 break;
6139 case AERO_SERIES:
6140 fusion->r56_div_offload = true;
6141 break;
6142 default:
6143 break;
6144 }
6145
6146 /* Check if MSI-X is supported while in ready state */
6147 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6148 0x4000000) >> 0x1a;
6149 if (msix_enable && !msix_disable) {
6150
6151 scratch_pad_1 = megasas_readl
6152 (instance, &instance->reg_set->outbound_scratch_pad_1);
6153 /* Check max MSI-X vectors */
6154 if (fusion) {
6155 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6156 /* Thunderbolt Series*/
6157 instance->msix_vectors = (scratch_pad_1
6158 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6159 } else {
6160 instance->msix_vectors = ((scratch_pad_1
6161 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6162 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6163
6164 /*
6165 * For Invader series, > 8 MSI-x vectors
6166 * supported by FW/HW implies combined
6167 * reply queue mode is enabled.
6168 * For Ventura series, > 16 MSI-x vectors
6169 * supported by FW/HW implies combined
6170 * reply queue mode is enabled.
6171 */
6172 switch (instance->adapter_type) {
6173 case INVADER_SERIES:
6174 if (instance->msix_vectors > 8)
6175 instance->msix_combined = true;
6176 break;
6177 case AERO_SERIES:
6178 case VENTURA_SERIES:
6179 if (instance->msix_vectors > 16)
6180 instance->msix_combined = true;
6181 break;
6182 }
6183
6184 if (rdpq_enable)
6185 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6186 1 : 0;
6187
6188 if (instance->adapter_type >= INVADER_SERIES &&
6189 !instance->msix_combined) {
6190 instance->msix_load_balance = true;
6191 instance->smp_affinity_enable = false;
6192 }
6193
6194 /* Save 1-15 reply post index address to local memory
6195 * Index 0 is already saved from reg offset
6196 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6197 */
6198 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6199 instance->reply_post_host_index_addr[loop] =
6200 (u32 __iomem *)
6201 ((u8 __iomem *)instance->reg_set +
6202 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6203 + (loop * 0x10));
6204 }
6205 }
6206
6207 dev_info(&instance->pdev->dev,
6208 "firmware supports msix\t: (%d)",
6209 instance->msix_vectors);
6210 if (msix_vectors)
6211 instance->msix_vectors = min(msix_vectors,
6212 instance->msix_vectors);
6213 } else /* MFI adapters */
6214 instance->msix_vectors = 1;
6215
6216
6217 /*
6218 * For Aero (if some conditions are met), driver will configure a
6219 * few additional reply queues with interrupt coalescing enabled.
6220 * These queues with interrupt coalescing enabled are called
6221 * High IOPS queues and rest of reply queues (based on number of
6222 * logical CPUs) are termed as Low latency queues.
6223 *
6224 * Total Number of reply queues = High IOPS queues + low latency queues
6225 *
6226 * For rest of fusion adapters, 1 additional reply queue will be
6227 * reserved for management commands, rest of reply queues
6228 * (based on number of logical CPUs) will be used for IOs and
6229 * referenced as IO queues.
6230 * Total Number of reply queues = 1 + IO queues
6231 *
6232 * MFI adapters supports single MSI-x so single reply queue
6233 * will be used for IO and management commands.
6234 */
6235
6236 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6237 true : false;
6238 if (intr_coalescing &&
6239 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6240 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6241 instance->perf_mode = MR_BALANCED_PERF_MODE;
6242 else
6243 instance->perf_mode = MR_LATENCY_PERF_MODE;
6244
6245
6246 if (instance->adapter_type == AERO_SERIES) {
6247 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6248 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6249
6250 /*
6251 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6252 * in latency perf mode and enable R1 PCI bandwidth algorithm
6253 */
6254 if (speed < 0x4) {
6255 instance->perf_mode = MR_LATENCY_PERF_MODE;
6256 fusion->pcie_bw_limitation = true;
6257 }
6258
6259 /*
6260 * Performance mode settings provided through module parameter-perf_mode will
6261 * take affect only for:
6262 * 1. Aero family of adapters.
6263 * 2. When user sets module parameter- perf_mode in range of 0-2.
6264 */
6265 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6266 (perf_mode <= MR_LATENCY_PERF_MODE))
6267 instance->perf_mode = perf_mode;
6268 /*
6269 * If intr coalescing is not supported by controller FW, then IOPS
6270 * and Balanced modes are not feasible.
6271 */
6272 if (!intr_coalescing)
6273 instance->perf_mode = MR_LATENCY_PERF_MODE;
6274
6275 }
6276
6277 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6278 instance->low_latency_index_start =
6279 MR_HIGH_IOPS_QUEUE_COUNT;
6280 else
6281 instance->low_latency_index_start = 1;
6282
6283 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6284
6285 instance->msix_vectors = min(num_msix_req,
6286 instance->msix_vectors);
6287
6288 megasas_alloc_irq_vectors(instance);
6289 if (!instance->msix_vectors)
6290 instance->msix_load_balance = false;
6291 }
6292 /*
6293 * MSI-X host index 0 is common for all adapter.
6294 * It is used for all MPT based Adapters.
6295 */
6296 if (instance->msix_combined) {
6297 instance->reply_post_host_index_addr[0] =
6298 (u32 *)((u8 *)instance->reg_set +
6299 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6300 } else {
6301 instance->reply_post_host_index_addr[0] =
6302 (u32 *)((u8 *)instance->reg_set +
6303 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6304 }
6305
6306 if (!instance->msix_vectors) {
6307 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6308 if (i < 0)
6309 goto fail_init_adapter;
6310 }
6311
6312 megasas_setup_reply_map(instance);
6313
6314 dev_info(&instance->pdev->dev,
6315 "current msix/online cpus\t: (%d/%d)\n",
6316 instance->msix_vectors, (unsigned int)num_online_cpus());
6317 dev_info(&instance->pdev->dev,
6318 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6319
6320 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6321 (unsigned long)instance);
6322
6323 /*
6324 * Below are default value for legacy Firmware.
6325 * non-fusion based controllers
6326 */
6327 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6328 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6329 /* Get operational params, sge flags, send init cmd to controller */
6330 if (instance->instancet->init_adapter(instance))
6331 goto fail_init_adapter;
6332
6333 if (instance->adapter_type >= VENTURA_SERIES) {
6334 scratch_pad_3 =
6335 megasas_readl(instance,
6336 &instance->reg_set->outbound_scratch_pad_3);
6337 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6338 MR_DEFAULT_NVME_PAGE_SHIFT)
6339 instance->nvme_page_size =
6340 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6341
6342 dev_info(&instance->pdev->dev,
6343 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6344 }
6345
6346 if (instance->msix_vectors ?
6347 megasas_setup_irqs_msix(instance, 1) :
6348 megasas_setup_irqs_ioapic(instance))
6349 goto fail_init_adapter;
6350
6351 if (instance->adapter_type != MFI_SERIES)
6352 megasas_setup_irq_poll(instance);
6353
6354 instance->instancet->enable_intr(instance);
6355
6356 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6357
6358 megasas_setup_jbod_map(instance);
6359
6360 if (megasas_get_device_list(instance) != SUCCESS) {
6361 dev_err(&instance->pdev->dev,
6362 "%s: megasas_get_device_list failed\n",
6363 __func__);
6364 goto fail_get_ld_pd_list;
6365 }
6366
6367 /* stream detection initialization */
6368 if (instance->adapter_type >= VENTURA_SERIES) {
6369 fusion->stream_detect_by_ld =
6370 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6371 sizeof(struct LD_STREAM_DETECT *),
6372 GFP_KERNEL);
6373 if (!fusion->stream_detect_by_ld) {
6374 dev_err(&instance->pdev->dev,
6375 "unable to allocate stream detection for pool of LDs\n");
6376 goto fail_get_ld_pd_list;
6377 }
6378 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6379 fusion->stream_detect_by_ld[i] =
6380 kzalloc(sizeof(struct LD_STREAM_DETECT),
6381 GFP_KERNEL);
6382 if (!fusion->stream_detect_by_ld[i]) {
6383 dev_err(&instance->pdev->dev,
6384 "unable to allocate stream detect by LD\n ");
6385 for (j = 0; j < i; ++j)
6386 kfree(fusion->stream_detect_by_ld[j]);
6387 kfree(fusion->stream_detect_by_ld);
6388 fusion->stream_detect_by_ld = NULL;
6389 goto fail_get_ld_pd_list;
6390 }
6391 fusion->stream_detect_by_ld[i]->mru_bit_map
6392 = MR_STREAM_BITMAP;
6393 }
6394 }
6395
6396 /*
6397 * Compute the max allowed sectors per IO: The controller info has two
6398 * limits on max sectors. Driver should use the minimum of these two.
6399 *
6400 * 1 << stripe_sz_ops.min = max sectors per strip
6401 *
6402 * Note that older firmwares ( < FW ver 30) didn't report information
6403 * to calculate max_sectors_1. So the number ended up as zero always.
6404 */
6405 tmp_sectors = 0;
6406 ctrl_info = instance->ctrl_info_buf;
6407
6408 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6409 le16_to_cpu(ctrl_info->max_strips_per_io);
6410 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6411
6412 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6413
6414 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6415 instance->passive = ctrl_info->cluster.passive;
6416 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6417 instance->UnevenSpanSupport =
6418 ctrl_info->adapterOperations2.supportUnevenSpans;
6419 if (instance->UnevenSpanSupport) {
6420 struct fusion_context *fusion = instance->ctrl_context;
6421 if (MR_ValidateMapInfo(instance, instance->map_id))
6422 fusion->fast_path_io = 1;
6423 else
6424 fusion->fast_path_io = 0;
6425
6426 }
6427 if (ctrl_info->host_interface.SRIOV) {
6428 instance->requestorId = ctrl_info->iov.requestorId;
6429 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6430 if (!ctrl_info->adapterOperations2.activePassive)
6431 instance->PlasmaFW111 = 1;
6432
6433 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6434 instance->PlasmaFW111 ? "1.11" : "new");
6435
6436 if (instance->PlasmaFW111) {
6437 iovPtr = (struct IOV_111 *)
6438 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6439 instance->requestorId = iovPtr->requestorId;
6440 }
6441 }
6442 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6443 instance->requestorId);
6444 }
6445
6446 instance->crash_dump_fw_support =
6447 ctrl_info->adapterOperations3.supportCrashDump;
6448 instance->crash_dump_drv_support =
6449 (instance->crash_dump_fw_support &&
6450 instance->crash_dump_buf);
6451 if (instance->crash_dump_drv_support)
6452 megasas_set_crash_dump_params(instance,
6453 MR_CRASH_BUF_TURN_OFF);
6454
6455 else {
6456 if (instance->crash_dump_buf)
6457 dma_free_coherent(&instance->pdev->dev,
6458 CRASH_DMA_BUF_SIZE,
6459 instance->crash_dump_buf,
6460 instance->crash_dump_h);
6461 instance->crash_dump_buf = NULL;
6462 }
6463
6464 if (instance->snapdump_wait_time) {
6465 megasas_get_snapdump_properties(instance);
6466 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6467 instance->snapdump_wait_time);
6468 }
6469
6470 dev_info(&instance->pdev->dev,
6471 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6472 le16_to_cpu(ctrl_info->pci.vendor_id),
6473 le16_to_cpu(ctrl_info->pci.device_id),
6474 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6475 le16_to_cpu(ctrl_info->pci.sub_device_id));
6476 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6477 instance->UnevenSpanSupport ? "yes" : "no");
6478 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6479 instance->crash_dump_drv_support ? "yes" : "no");
6480 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6481 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6482
6483 instance->max_sectors_per_req = instance->max_num_sge *
6484 SGE_BUFFER_SIZE / 512;
6485 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6486 instance->max_sectors_per_req = tmp_sectors;
6487
6488 /* Check for valid throttlequeuedepth module parameter */
6489 if (throttlequeuedepth &&
6490 throttlequeuedepth <= instance->max_scsi_cmds)
6491 instance->throttlequeuedepth = throttlequeuedepth;
6492 else
6493 instance->throttlequeuedepth =
6494 MEGASAS_THROTTLE_QUEUE_DEPTH;
6495
6496 if ((resetwaittime < 1) ||
6497 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6498 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6499
6500 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6501 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6502
6503 /* Launch SR-IOV heartbeat timer */
6504 if (instance->requestorId) {
6505 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6506 megasas_start_timer(instance);
6507 } else {
6508 instance->skip_heartbeat_timer_del = 1;
6509 goto fail_get_ld_pd_list;
6510 }
6511 }
6512
6513 /*
6514 * Create and start watchdog thread which will monitor
6515 * controller state every 1 sec and trigger OCR when
6516 * it enters fault state
6517 */
6518 if (instance->adapter_type != MFI_SERIES)
6519 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6520 goto fail_start_watchdog;
6521
6522 return 0;
6523
6524 fail_start_watchdog:
6525 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6526 del_timer_sync(&instance->sriov_heartbeat_timer);
6527 fail_get_ld_pd_list:
6528 instance->instancet->disable_intr(instance);
6529 megasas_destroy_irqs(instance);
6530 fail_init_adapter:
6531 if (instance->msix_vectors)
6532 pci_free_irq_vectors(instance->pdev);
6533 instance->msix_vectors = 0;
6534 fail_alloc_dma_buf:
6535 megasas_free_ctrl_dma_buffers(instance);
6536 megasas_free_ctrl_mem(instance);
6537 fail_ready_state:
6538 iounmap(instance->reg_set);
6539
6540 fail_ioremap:
6541 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6542
6543 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6544 __func__, __LINE__);
6545 return -EINVAL;
6546 }
6547
6548 /**
6549 * megasas_release_mfi - Reverses the FW initialization
6550 * @instance: Adapter soft state
6551 */
megasas_release_mfi(struct megasas_instance * instance)6552 static void megasas_release_mfi(struct megasas_instance *instance)
6553 {
6554 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6555
6556 if (instance->reply_queue)
6557 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6558 instance->reply_queue, instance->reply_queue_h);
6559
6560 megasas_free_cmds(instance);
6561
6562 iounmap(instance->reg_set);
6563
6564 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6565 }
6566
6567 /**
6568 * megasas_get_seq_num - Gets latest event sequence numbers
6569 * @instance: Adapter soft state
6570 * @eli: FW event log sequence numbers information
6571 *
6572 * FW maintains a log of all events in a non-volatile area. Upper layers would
6573 * usually find out the latest sequence number of the events, the seq number at
6574 * the boot etc. They would "read" all the events below the latest seq number
6575 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6576 * number), they would subsribe to AEN (asynchronous event notification) and
6577 * wait for the events to happen.
6578 */
6579 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6580 megasas_get_seq_num(struct megasas_instance *instance,
6581 struct megasas_evt_log_info *eli)
6582 {
6583 struct megasas_cmd *cmd;
6584 struct megasas_dcmd_frame *dcmd;
6585 struct megasas_evt_log_info *el_info;
6586 dma_addr_t el_info_h = 0;
6587 int ret;
6588
6589 cmd = megasas_get_cmd(instance);
6590
6591 if (!cmd) {
6592 return -ENOMEM;
6593 }
6594
6595 dcmd = &cmd->frame->dcmd;
6596 el_info = dma_alloc_coherent(&instance->pdev->dev,
6597 sizeof(struct megasas_evt_log_info),
6598 &el_info_h, GFP_KERNEL);
6599 if (!el_info) {
6600 megasas_return_cmd(instance, cmd);
6601 return -ENOMEM;
6602 }
6603
6604 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6605
6606 dcmd->cmd = MFI_CMD_DCMD;
6607 dcmd->cmd_status = 0x0;
6608 dcmd->sge_count = 1;
6609 dcmd->flags = MFI_FRAME_DIR_READ;
6610 dcmd->timeout = 0;
6611 dcmd->pad_0 = 0;
6612 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6613 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6614
6615 megasas_set_dma_settings(instance, dcmd, el_info_h,
6616 sizeof(struct megasas_evt_log_info));
6617
6618 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6619 if (ret != DCMD_SUCCESS) {
6620 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6621 __func__, __LINE__);
6622 goto dcmd_failed;
6623 }
6624
6625 /*
6626 * Copy the data back into callers buffer
6627 */
6628 eli->newest_seq_num = el_info->newest_seq_num;
6629 eli->oldest_seq_num = el_info->oldest_seq_num;
6630 eli->clear_seq_num = el_info->clear_seq_num;
6631 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6632 eli->boot_seq_num = el_info->boot_seq_num;
6633
6634 dcmd_failed:
6635 dma_free_coherent(&instance->pdev->dev,
6636 sizeof(struct megasas_evt_log_info),
6637 el_info, el_info_h);
6638
6639 megasas_return_cmd(instance, cmd);
6640
6641 return ret;
6642 }
6643
6644 /**
6645 * megasas_register_aen - Registers for asynchronous event notification
6646 * @instance: Adapter soft state
6647 * @seq_num: The starting sequence number
6648 * @class_locale_word: Class of the event
6649 *
6650 * This function subscribes for AEN for events beyond the @seq_num. It requests
6651 * to be notified if and only if the event is of type @class_locale
6652 */
6653 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6654 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6655 u32 class_locale_word)
6656 {
6657 int ret_val;
6658 struct megasas_cmd *cmd;
6659 struct megasas_dcmd_frame *dcmd;
6660 union megasas_evt_class_locale curr_aen;
6661 union megasas_evt_class_locale prev_aen;
6662
6663 /*
6664 * If there an AEN pending already (aen_cmd), check if the
6665 * class_locale of that pending AEN is inclusive of the new
6666 * AEN request we currently have. If it is, then we don't have
6667 * to do anything. In other words, whichever events the current
6668 * AEN request is subscribing to, have already been subscribed
6669 * to.
6670 *
6671 * If the old_cmd is _not_ inclusive, then we have to abort
6672 * that command, form a class_locale that is superset of both
6673 * old and current and re-issue to the FW
6674 */
6675
6676 curr_aen.word = class_locale_word;
6677
6678 if (instance->aen_cmd) {
6679
6680 prev_aen.word =
6681 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6682
6683 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6684 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6685 dev_info(&instance->pdev->dev,
6686 "%s %d out of range class %d send by application\n",
6687 __func__, __LINE__, curr_aen.members.class);
6688 return 0;
6689 }
6690
6691 /*
6692 * A class whose enum value is smaller is inclusive of all
6693 * higher values. If a PROGRESS (= -1) was previously
6694 * registered, then a new registration requests for higher
6695 * classes need not be sent to FW. They are automatically
6696 * included.
6697 *
6698 * Locale numbers don't have such hierarchy. They are bitmap
6699 * values
6700 */
6701 if ((prev_aen.members.class <= curr_aen.members.class) &&
6702 !((prev_aen.members.locale & curr_aen.members.locale) ^
6703 curr_aen.members.locale)) {
6704 /*
6705 * Previously issued event registration includes
6706 * current request. Nothing to do.
6707 */
6708 return 0;
6709 } else {
6710 curr_aen.members.locale |= prev_aen.members.locale;
6711
6712 if (prev_aen.members.class < curr_aen.members.class)
6713 curr_aen.members.class = prev_aen.members.class;
6714
6715 instance->aen_cmd->abort_aen = 1;
6716 ret_val = megasas_issue_blocked_abort_cmd(instance,
6717 instance->
6718 aen_cmd, 30);
6719
6720 if (ret_val) {
6721 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6722 "previous AEN command\n");
6723 return ret_val;
6724 }
6725 }
6726 }
6727
6728 cmd = megasas_get_cmd(instance);
6729
6730 if (!cmd)
6731 return -ENOMEM;
6732
6733 dcmd = &cmd->frame->dcmd;
6734
6735 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6736
6737 /*
6738 * Prepare DCMD for aen registration
6739 */
6740 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6741
6742 dcmd->cmd = MFI_CMD_DCMD;
6743 dcmd->cmd_status = 0x0;
6744 dcmd->sge_count = 1;
6745 dcmd->flags = MFI_FRAME_DIR_READ;
6746 dcmd->timeout = 0;
6747 dcmd->pad_0 = 0;
6748 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6749 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6750 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6751 instance->last_seq_num = seq_num;
6752 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6753
6754 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6755 sizeof(struct megasas_evt_detail));
6756
6757 if (instance->aen_cmd != NULL) {
6758 megasas_return_cmd(instance, cmd);
6759 return 0;
6760 }
6761
6762 /*
6763 * Store reference to the cmd used to register for AEN. When an
6764 * application wants us to register for AEN, we have to abort this
6765 * cmd and re-register with a new EVENT LOCALE supplied by that app
6766 */
6767 instance->aen_cmd = cmd;
6768
6769 /*
6770 * Issue the aen registration frame
6771 */
6772 instance->instancet->issue_dcmd(instance, cmd);
6773
6774 return 0;
6775 }
6776
6777 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6778 *
6779 * This DCMD will fetch few properties of LD/system PD defined
6780 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6781 *
6782 * DCMD send by drivers whenever new target is added to the OS.
6783 *
6784 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6785 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6786 * 0 = system PD, 1 = LD.
6787 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6788 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6789 *
6790 * @instance: Adapter soft state
6791 * @sdev: OS provided scsi device
6792 *
6793 * Returns 0 on success non-zero on failure.
6794 */
6795 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6796 megasas_get_target_prop(struct megasas_instance *instance,
6797 struct scsi_device *sdev)
6798 {
6799 int ret;
6800 struct megasas_cmd *cmd;
6801 struct megasas_dcmd_frame *dcmd;
6802 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6803 sdev->id;
6804
6805 cmd = megasas_get_cmd(instance);
6806
6807 if (!cmd) {
6808 dev_err(&instance->pdev->dev,
6809 "Failed to get cmd %s\n", __func__);
6810 return -ENOMEM;
6811 }
6812
6813 dcmd = &cmd->frame->dcmd;
6814
6815 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6816 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6817 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6818
6819 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6820 dcmd->cmd = MFI_CMD_DCMD;
6821 dcmd->cmd_status = 0xFF;
6822 dcmd->sge_count = 1;
6823 dcmd->flags = MFI_FRAME_DIR_READ;
6824 dcmd->timeout = 0;
6825 dcmd->pad_0 = 0;
6826 dcmd->data_xfer_len =
6827 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6828 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6829
6830 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6831 sizeof(struct MR_TARGET_PROPERTIES));
6832
6833 if ((instance->adapter_type != MFI_SERIES) &&
6834 !instance->mask_interrupts)
6835 ret = megasas_issue_blocked_cmd(instance,
6836 cmd, MFI_IO_TIMEOUT_SECS);
6837 else
6838 ret = megasas_issue_polled(instance, cmd);
6839
6840 switch (ret) {
6841 case DCMD_TIMEOUT:
6842 switch (dcmd_timeout_ocr_possible(instance)) {
6843 case INITIATE_OCR:
6844 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6845 mutex_unlock(&instance->reset_mutex);
6846 megasas_reset_fusion(instance->host,
6847 MFI_IO_TIMEOUT_OCR);
6848 mutex_lock(&instance->reset_mutex);
6849 break;
6850 case KILL_ADAPTER:
6851 megaraid_sas_kill_hba(instance);
6852 break;
6853 case IGNORE_TIMEOUT:
6854 dev_info(&instance->pdev->dev,
6855 "Ignore DCMD timeout: %s %d\n",
6856 __func__, __LINE__);
6857 break;
6858 }
6859 break;
6860
6861 default:
6862 megasas_return_cmd(instance, cmd);
6863 }
6864 if (ret != DCMD_SUCCESS)
6865 dev_err(&instance->pdev->dev,
6866 "return from %s %d return value %d\n",
6867 __func__, __LINE__, ret);
6868
6869 return ret;
6870 }
6871
6872 /**
6873 * megasas_start_aen - Subscribes to AEN during driver load time
6874 * @instance: Adapter soft state
6875 */
megasas_start_aen(struct megasas_instance * instance)6876 static int megasas_start_aen(struct megasas_instance *instance)
6877 {
6878 struct megasas_evt_log_info eli;
6879 union megasas_evt_class_locale class_locale;
6880
6881 /*
6882 * Get the latest sequence number from FW
6883 */
6884 memset(&eli, 0, sizeof(eli));
6885
6886 if (megasas_get_seq_num(instance, &eli))
6887 return -1;
6888
6889 /*
6890 * Register AEN with FW for latest sequence number plus 1
6891 */
6892 class_locale.members.reserved = 0;
6893 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6894 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6895
6896 return megasas_register_aen(instance,
6897 le32_to_cpu(eli.newest_seq_num) + 1,
6898 class_locale.word);
6899 }
6900
6901 /**
6902 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6903 * @instance: Adapter soft state
6904 */
megasas_io_attach(struct megasas_instance * instance)6905 static int megasas_io_attach(struct megasas_instance *instance)
6906 {
6907 struct Scsi_Host *host = instance->host;
6908
6909 /*
6910 * Export parameters required by SCSI mid-layer
6911 */
6912 host->unique_id = instance->unique_id;
6913 host->can_queue = instance->max_scsi_cmds;
6914 host->this_id = instance->init_id;
6915 host->sg_tablesize = instance->max_num_sge;
6916
6917 if (instance->fw_support_ieee)
6918 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6919
6920 /*
6921 * Check if the module parameter value for max_sectors can be used
6922 */
6923 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6924 instance->max_sectors_per_req = max_sectors;
6925 else {
6926 if (max_sectors) {
6927 if (((instance->pdev->device ==
6928 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6929 (instance->pdev->device ==
6930 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6931 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6932 instance->max_sectors_per_req = max_sectors;
6933 } else {
6934 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6935 "and <= %d (or < 1MB for GEN2 controller)\n",
6936 instance->max_sectors_per_req);
6937 }
6938 }
6939 }
6940
6941 host->max_sectors = instance->max_sectors_per_req;
6942 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6943 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6944 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6945 host->max_lun = MEGASAS_MAX_LUN;
6946 host->max_cmd_len = 16;
6947
6948 /* Use shared host tagset only for fusion adaptors
6949 * if there are managed interrupts (smp affinity enabled case).
6950 * Single msix_vectors in kdump, so shared host tag is also disabled.
6951 */
6952
6953 host->host_tagset = 0;
6954 host->nr_hw_queues = 1;
6955
6956 if ((instance->adapter_type != MFI_SERIES) &&
6957 (instance->msix_vectors > instance->low_latency_index_start) &&
6958 host_tagset_enable &&
6959 instance->smp_affinity_enable) {
6960 host->host_tagset = 1;
6961 host->nr_hw_queues = instance->msix_vectors -
6962 instance->low_latency_index_start + instance->iopoll_q_count;
6963 if (instance->iopoll_q_count)
6964 host->nr_maps = 3;
6965 } else {
6966 instance->iopoll_q_count = 0;
6967 }
6968
6969 dev_info(&instance->pdev->dev,
6970 "Max firmware commands: %d shared with default "
6971 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6972 host->nr_hw_queues - instance->iopoll_q_count,
6973 instance->iopoll_q_count);
6974 /*
6975 * Notify the mid-layer about the new controller
6976 */
6977 if (scsi_add_host(host, &instance->pdev->dev)) {
6978 dev_err(&instance->pdev->dev,
6979 "Failed to add host from %s %d\n",
6980 __func__, __LINE__);
6981 return -ENODEV;
6982 }
6983
6984 return 0;
6985 }
6986
6987 /**
6988 * megasas_set_dma_mask - Set DMA mask for supported controllers
6989 *
6990 * @instance: Adapter soft state
6991 * Description:
6992 *
6993 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6994 *
6995 * For invader-
6996 * By default, driver/FW will operate in 32bit DMA addresses
6997 * for consistent DMA mapping but if 32 bit consistent
6998 * DMA mask fails, driver will try with 63 bit consistent
6999 * mask provided FW is true 63bit DMA capable
7000 *
7001 * For older controllers(Thunderbolt and MFI based adapters)-
7002 * driver/FW will operate in 32 bit consistent DMA addresses.
7003 */
7004 static int
megasas_set_dma_mask(struct megasas_instance * instance)7005 megasas_set_dma_mask(struct megasas_instance *instance)
7006 {
7007 u64 consistent_mask;
7008 struct pci_dev *pdev;
7009 u32 scratch_pad_1;
7010
7011 pdev = instance->pdev;
7012 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7013 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7014
7015 if (IS_DMA64) {
7016 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7017 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7018 goto fail_set_dma_mask;
7019
7020 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7021 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7022 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7023 /*
7024 * If 32 bit DMA mask fails, then try for 64 bit mask
7025 * for FW capable of handling 64 bit DMA.
7026 */
7027 scratch_pad_1 = megasas_readl
7028 (instance, &instance->reg_set->outbound_scratch_pad_1);
7029
7030 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7031 goto fail_set_dma_mask;
7032 else if (dma_set_mask_and_coherent(&pdev->dev,
7033 DMA_BIT_MASK(63)))
7034 goto fail_set_dma_mask;
7035 }
7036 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7037 goto fail_set_dma_mask;
7038
7039 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7040 instance->consistent_mask_64bit = false;
7041 else
7042 instance->consistent_mask_64bit = true;
7043
7044 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7045 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7046 (instance->consistent_mask_64bit ? "63" : "32"));
7047
7048 return 0;
7049
7050 fail_set_dma_mask:
7051 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7052 return -1;
7053
7054 }
7055
7056 /*
7057 * megasas_set_adapter_type - Set adapter type.
7058 * Supported controllers can be divided in
7059 * different categories-
7060 * enum MR_ADAPTER_TYPE {
7061 * MFI_SERIES = 1,
7062 * THUNDERBOLT_SERIES = 2,
7063 * INVADER_SERIES = 3,
7064 * VENTURA_SERIES = 4,
7065 * AERO_SERIES = 5,
7066 * };
7067 * @instance: Adapter soft state
7068 * return: void
7069 */
megasas_set_adapter_type(struct megasas_instance * instance)7070 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7071 {
7072 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7073 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7074 instance->adapter_type = MFI_SERIES;
7075 } else {
7076 switch (instance->pdev->device) {
7077 case PCI_DEVICE_ID_LSI_AERO_10E1:
7078 case PCI_DEVICE_ID_LSI_AERO_10E2:
7079 case PCI_DEVICE_ID_LSI_AERO_10E5:
7080 case PCI_DEVICE_ID_LSI_AERO_10E6:
7081 instance->adapter_type = AERO_SERIES;
7082 break;
7083 case PCI_DEVICE_ID_LSI_VENTURA:
7084 case PCI_DEVICE_ID_LSI_CRUSADER:
7085 case PCI_DEVICE_ID_LSI_HARPOON:
7086 case PCI_DEVICE_ID_LSI_TOMCAT:
7087 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7088 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7089 instance->adapter_type = VENTURA_SERIES;
7090 break;
7091 case PCI_DEVICE_ID_LSI_FUSION:
7092 case PCI_DEVICE_ID_LSI_PLASMA:
7093 instance->adapter_type = THUNDERBOLT_SERIES;
7094 break;
7095 case PCI_DEVICE_ID_LSI_INVADER:
7096 case PCI_DEVICE_ID_LSI_INTRUDER:
7097 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7098 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7099 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7100 case PCI_DEVICE_ID_LSI_FURY:
7101 instance->adapter_type = INVADER_SERIES;
7102 break;
7103 default: /* For all other supported controllers */
7104 instance->adapter_type = MFI_SERIES;
7105 break;
7106 }
7107 }
7108 }
7109
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7110 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7111 {
7112 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7113 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7114 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7115 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7116
7117 if (!instance->producer || !instance->consumer) {
7118 dev_err(&instance->pdev->dev,
7119 "Failed to allocate memory for producer, consumer\n");
7120 return -1;
7121 }
7122
7123 *instance->producer = 0;
7124 *instance->consumer = 0;
7125 return 0;
7126 }
7127
7128 /**
7129 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7130 * structures which are not common across MFI
7131 * adapters and fusion adapters.
7132 * For MFI based adapters, allocate producer and
7133 * consumer buffers. For fusion adapters, allocate
7134 * memory for fusion context.
7135 * @instance: Adapter soft state
7136 * return: 0 for SUCCESS
7137 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7138 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7139 {
7140 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7141 GFP_KERNEL);
7142 if (!instance->reply_map)
7143 return -ENOMEM;
7144
7145 switch (instance->adapter_type) {
7146 case MFI_SERIES:
7147 if (megasas_alloc_mfi_ctrl_mem(instance))
7148 return -ENOMEM;
7149 break;
7150 case AERO_SERIES:
7151 case VENTURA_SERIES:
7152 case THUNDERBOLT_SERIES:
7153 case INVADER_SERIES:
7154 if (megasas_alloc_fusion_context(instance))
7155 return -ENOMEM;
7156 break;
7157 }
7158
7159 return 0;
7160 }
7161
7162 /*
7163 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7164 * producer, consumer buffers for MFI adapters
7165 *
7166 * @instance - Adapter soft instance
7167 *
7168 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7169 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7170 {
7171 kfree(instance->reply_map);
7172 if (instance->adapter_type == MFI_SERIES) {
7173 if (instance->producer)
7174 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7175 instance->producer,
7176 instance->producer_h);
7177 if (instance->consumer)
7178 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7179 instance->consumer,
7180 instance->consumer_h);
7181 } else {
7182 megasas_free_fusion_context(instance);
7183 }
7184 }
7185
7186 /**
7187 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7188 * driver load time
7189 *
7190 * @instance: Adapter soft instance
7191 *
7192 * @return: O for SUCCESS
7193 */
7194 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7195 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7196 {
7197 struct pci_dev *pdev = instance->pdev;
7198 struct fusion_context *fusion = instance->ctrl_context;
7199
7200 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7201 sizeof(struct megasas_evt_detail),
7202 &instance->evt_detail_h, GFP_KERNEL);
7203
7204 if (!instance->evt_detail) {
7205 dev_err(&instance->pdev->dev,
7206 "Failed to allocate event detail buffer\n");
7207 return -ENOMEM;
7208 }
7209
7210 if (fusion) {
7211 fusion->ioc_init_request =
7212 dma_alloc_coherent(&pdev->dev,
7213 sizeof(struct MPI2_IOC_INIT_REQUEST),
7214 &fusion->ioc_init_request_phys,
7215 GFP_KERNEL);
7216
7217 if (!fusion->ioc_init_request) {
7218 dev_err(&pdev->dev,
7219 "Failed to allocate ioc init request\n");
7220 return -ENOMEM;
7221 }
7222
7223 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7224 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7225 &instance->snapdump_prop_h, GFP_KERNEL);
7226
7227 if (!instance->snapdump_prop)
7228 dev_err(&pdev->dev,
7229 "Failed to allocate snapdump properties buffer\n");
7230
7231 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7232 HOST_DEVICE_LIST_SZ,
7233 &instance->host_device_list_buf_h,
7234 GFP_KERNEL);
7235
7236 if (!instance->host_device_list_buf) {
7237 dev_err(&pdev->dev,
7238 "Failed to allocate targetid list buffer\n");
7239 return -ENOMEM;
7240 }
7241
7242 }
7243
7244 instance->pd_list_buf =
7245 dma_alloc_coherent(&pdev->dev,
7246 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7247 &instance->pd_list_buf_h, GFP_KERNEL);
7248
7249 if (!instance->pd_list_buf) {
7250 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7251 return -ENOMEM;
7252 }
7253
7254 instance->ctrl_info_buf =
7255 dma_alloc_coherent(&pdev->dev,
7256 sizeof(struct megasas_ctrl_info),
7257 &instance->ctrl_info_buf_h, GFP_KERNEL);
7258
7259 if (!instance->ctrl_info_buf) {
7260 dev_err(&pdev->dev,
7261 "Failed to allocate controller info buffer\n");
7262 return -ENOMEM;
7263 }
7264
7265 instance->ld_list_buf =
7266 dma_alloc_coherent(&pdev->dev,
7267 sizeof(struct MR_LD_LIST),
7268 &instance->ld_list_buf_h, GFP_KERNEL);
7269
7270 if (!instance->ld_list_buf) {
7271 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7272 return -ENOMEM;
7273 }
7274
7275 instance->ld_targetid_list_buf =
7276 dma_alloc_coherent(&pdev->dev,
7277 sizeof(struct MR_LD_TARGETID_LIST),
7278 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7279
7280 if (!instance->ld_targetid_list_buf) {
7281 dev_err(&pdev->dev,
7282 "Failed to allocate LD targetid list buffer\n");
7283 return -ENOMEM;
7284 }
7285
7286 if (!reset_devices) {
7287 instance->system_info_buf =
7288 dma_alloc_coherent(&pdev->dev,
7289 sizeof(struct MR_DRV_SYSTEM_INFO),
7290 &instance->system_info_h, GFP_KERNEL);
7291 instance->pd_info =
7292 dma_alloc_coherent(&pdev->dev,
7293 sizeof(struct MR_PD_INFO),
7294 &instance->pd_info_h, GFP_KERNEL);
7295 instance->tgt_prop =
7296 dma_alloc_coherent(&pdev->dev,
7297 sizeof(struct MR_TARGET_PROPERTIES),
7298 &instance->tgt_prop_h, GFP_KERNEL);
7299 instance->crash_dump_buf =
7300 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7301 &instance->crash_dump_h, GFP_KERNEL);
7302
7303 if (!instance->system_info_buf)
7304 dev_err(&instance->pdev->dev,
7305 "Failed to allocate system info buffer\n");
7306
7307 if (!instance->pd_info)
7308 dev_err(&instance->pdev->dev,
7309 "Failed to allocate pd_info buffer\n");
7310
7311 if (!instance->tgt_prop)
7312 dev_err(&instance->pdev->dev,
7313 "Failed to allocate tgt_prop buffer\n");
7314
7315 if (!instance->crash_dump_buf)
7316 dev_err(&instance->pdev->dev,
7317 "Failed to allocate crash dump buffer\n");
7318 }
7319
7320 return 0;
7321 }
7322
7323 /*
7324 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7325 * during driver load time
7326 *
7327 * @instance- Adapter soft instance
7328 *
7329 */
7330 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7331 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7332 {
7333 struct pci_dev *pdev = instance->pdev;
7334 struct fusion_context *fusion = instance->ctrl_context;
7335
7336 if (instance->evt_detail)
7337 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7338 instance->evt_detail,
7339 instance->evt_detail_h);
7340
7341 if (fusion && fusion->ioc_init_request)
7342 dma_free_coherent(&pdev->dev,
7343 sizeof(struct MPI2_IOC_INIT_REQUEST),
7344 fusion->ioc_init_request,
7345 fusion->ioc_init_request_phys);
7346
7347 if (instance->pd_list_buf)
7348 dma_free_coherent(&pdev->dev,
7349 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7350 instance->pd_list_buf,
7351 instance->pd_list_buf_h);
7352
7353 if (instance->ld_list_buf)
7354 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7355 instance->ld_list_buf,
7356 instance->ld_list_buf_h);
7357
7358 if (instance->ld_targetid_list_buf)
7359 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7360 instance->ld_targetid_list_buf,
7361 instance->ld_targetid_list_buf_h);
7362
7363 if (instance->ctrl_info_buf)
7364 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7365 instance->ctrl_info_buf,
7366 instance->ctrl_info_buf_h);
7367
7368 if (instance->system_info_buf)
7369 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7370 instance->system_info_buf,
7371 instance->system_info_h);
7372
7373 if (instance->pd_info)
7374 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7375 instance->pd_info, instance->pd_info_h);
7376
7377 if (instance->tgt_prop)
7378 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7379 instance->tgt_prop, instance->tgt_prop_h);
7380
7381 if (instance->crash_dump_buf)
7382 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7383 instance->crash_dump_buf,
7384 instance->crash_dump_h);
7385
7386 if (instance->snapdump_prop)
7387 dma_free_coherent(&pdev->dev,
7388 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7389 instance->snapdump_prop,
7390 instance->snapdump_prop_h);
7391
7392 if (instance->host_device_list_buf)
7393 dma_free_coherent(&pdev->dev,
7394 HOST_DEVICE_LIST_SZ,
7395 instance->host_device_list_buf,
7396 instance->host_device_list_buf_h);
7397
7398 }
7399
7400 /*
7401 * megasas_init_ctrl_params - Initialize controller's instance
7402 * parameters before FW init
7403 * @instance - Adapter soft instance
7404 * @return - void
7405 */
megasas_init_ctrl_params(struct megasas_instance * instance)7406 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7407 {
7408 instance->fw_crash_state = UNAVAILABLE;
7409
7410 megasas_poll_wait_aen = 0;
7411 instance->issuepend_done = 1;
7412 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7413
7414 /*
7415 * Initialize locks and queues
7416 */
7417 INIT_LIST_HEAD(&instance->cmd_pool);
7418 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7419
7420 atomic_set(&instance->fw_outstanding, 0);
7421 atomic64_set(&instance->total_io_count, 0);
7422
7423 init_waitqueue_head(&instance->int_cmd_wait_q);
7424 init_waitqueue_head(&instance->abort_cmd_wait_q);
7425
7426 spin_lock_init(&instance->crashdump_lock);
7427 spin_lock_init(&instance->mfi_pool_lock);
7428 spin_lock_init(&instance->hba_lock);
7429 spin_lock_init(&instance->stream_lock);
7430 spin_lock_init(&instance->completion_lock);
7431
7432 mutex_init(&instance->reset_mutex);
7433
7434 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7435 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7436 instance->flag_ieee = 1;
7437
7438 instance->flag = 0;
7439 instance->unload = 1;
7440 instance->last_time = 0;
7441 instance->disableOnlineCtrlReset = 1;
7442 instance->UnevenSpanSupport = 0;
7443 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7444 instance->msix_load_balance = false;
7445
7446 if (instance->adapter_type != MFI_SERIES)
7447 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7448 else
7449 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7450 }
7451
7452 /**
7453 * megasas_probe_one - PCI hotplug entry point
7454 * @pdev: PCI device structure
7455 * @id: PCI ids of supported hotplugged adapter
7456 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7457 static int megasas_probe_one(struct pci_dev *pdev,
7458 const struct pci_device_id *id)
7459 {
7460 int rval, pos;
7461 struct Scsi_Host *host;
7462 struct megasas_instance *instance;
7463 u16 control = 0;
7464
7465 switch (pdev->device) {
7466 case PCI_DEVICE_ID_LSI_AERO_10E0:
7467 case PCI_DEVICE_ID_LSI_AERO_10E3:
7468 case PCI_DEVICE_ID_LSI_AERO_10E4:
7469 case PCI_DEVICE_ID_LSI_AERO_10E7:
7470 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7471 return 1;
7472 case PCI_DEVICE_ID_LSI_AERO_10E1:
7473 case PCI_DEVICE_ID_LSI_AERO_10E5:
7474 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7475 break;
7476 }
7477
7478 /* Reset MSI-X in the kdump kernel */
7479 if (reset_devices) {
7480 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7481 if (pos) {
7482 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7483 &control);
7484 if (control & PCI_MSIX_FLAGS_ENABLE) {
7485 dev_info(&pdev->dev, "resetting MSI-X\n");
7486 pci_write_config_word(pdev,
7487 pos + PCI_MSIX_FLAGS,
7488 control &
7489 ~PCI_MSIX_FLAGS_ENABLE);
7490 }
7491 }
7492 }
7493
7494 /*
7495 * PCI prepping: enable device set bus mastering and dma mask
7496 */
7497 rval = pci_enable_device_mem(pdev);
7498
7499 if (rval) {
7500 return rval;
7501 }
7502
7503 pci_set_master(pdev);
7504
7505 host = scsi_host_alloc(&megasas_template,
7506 sizeof(struct megasas_instance));
7507
7508 if (!host) {
7509 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7510 goto fail_alloc_instance;
7511 }
7512
7513 instance = (struct megasas_instance *)host->hostdata;
7514 memset(instance, 0, sizeof(*instance));
7515 atomic_set(&instance->fw_reset_no_pci_access, 0);
7516
7517 /*
7518 * Initialize PCI related and misc parameters
7519 */
7520 instance->pdev = pdev;
7521 instance->host = host;
7522 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7523 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7524
7525 megasas_set_adapter_type(instance);
7526
7527 /*
7528 * Initialize MFI Firmware
7529 */
7530 if (megasas_init_fw(instance))
7531 goto fail_init_mfi;
7532
7533 if (instance->requestorId) {
7534 if (instance->PlasmaFW111) {
7535 instance->vf_affiliation_111 =
7536 dma_alloc_coherent(&pdev->dev,
7537 sizeof(struct MR_LD_VF_AFFILIATION_111),
7538 &instance->vf_affiliation_111_h,
7539 GFP_KERNEL);
7540 if (!instance->vf_affiliation_111)
7541 dev_warn(&pdev->dev, "Can't allocate "
7542 "memory for VF affiliation buffer\n");
7543 } else {
7544 instance->vf_affiliation =
7545 dma_alloc_coherent(&pdev->dev,
7546 (MAX_LOGICAL_DRIVES + 1) *
7547 sizeof(struct MR_LD_VF_AFFILIATION),
7548 &instance->vf_affiliation_h,
7549 GFP_KERNEL);
7550 if (!instance->vf_affiliation)
7551 dev_warn(&pdev->dev, "Can't allocate "
7552 "memory for VF affiliation buffer\n");
7553 }
7554 }
7555
7556 /*
7557 * Store instance in PCI softstate
7558 */
7559 pci_set_drvdata(pdev, instance);
7560
7561 /*
7562 * Add this controller to megasas_mgmt_info structure so that it
7563 * can be exported to management applications
7564 */
7565 megasas_mgmt_info.count++;
7566 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7567 megasas_mgmt_info.max_index++;
7568
7569 /*
7570 * Register with SCSI mid-layer
7571 */
7572 if (megasas_io_attach(instance))
7573 goto fail_io_attach;
7574
7575 instance->unload = 0;
7576 /*
7577 * Trigger SCSI to scan our drives
7578 */
7579 if (!instance->enable_fw_dev_list ||
7580 (instance->host_device_list_buf->count > 0))
7581 scsi_scan_host(host);
7582
7583 /*
7584 * Initiate AEN (Asynchronous Event Notification)
7585 */
7586 if (megasas_start_aen(instance)) {
7587 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7588 goto fail_start_aen;
7589 }
7590
7591 megasas_setup_debugfs(instance);
7592
7593 /* Get current SR-IOV LD/VF affiliation */
7594 if (instance->requestorId)
7595 megasas_get_ld_vf_affiliation(instance, 1);
7596
7597 return 0;
7598
7599 fail_start_aen:
7600 instance->unload = 1;
7601 scsi_remove_host(instance->host);
7602 fail_io_attach:
7603 megasas_mgmt_info.count--;
7604 megasas_mgmt_info.max_index--;
7605 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7606
7607 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7608 del_timer_sync(&instance->sriov_heartbeat_timer);
7609
7610 instance->instancet->disable_intr(instance);
7611 megasas_destroy_irqs(instance);
7612
7613 if (instance->adapter_type != MFI_SERIES)
7614 megasas_release_fusion(instance);
7615 else
7616 megasas_release_mfi(instance);
7617
7618 if (instance->msix_vectors)
7619 pci_free_irq_vectors(instance->pdev);
7620 instance->msix_vectors = 0;
7621
7622 if (instance->fw_crash_state != UNAVAILABLE)
7623 megasas_free_host_crash_buffer(instance);
7624
7625 if (instance->adapter_type != MFI_SERIES)
7626 megasas_fusion_stop_watchdog(instance);
7627 fail_init_mfi:
7628 scsi_host_put(host);
7629 fail_alloc_instance:
7630 pci_disable_device(pdev);
7631
7632 return -ENODEV;
7633 }
7634
7635 /**
7636 * megasas_flush_cache - Requests FW to flush all its caches
7637 * @instance: Adapter soft state
7638 */
megasas_flush_cache(struct megasas_instance * instance)7639 static void megasas_flush_cache(struct megasas_instance *instance)
7640 {
7641 struct megasas_cmd *cmd;
7642 struct megasas_dcmd_frame *dcmd;
7643
7644 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7645 return;
7646
7647 cmd = megasas_get_cmd(instance);
7648
7649 if (!cmd)
7650 return;
7651
7652 dcmd = &cmd->frame->dcmd;
7653
7654 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7655
7656 dcmd->cmd = MFI_CMD_DCMD;
7657 dcmd->cmd_status = 0x0;
7658 dcmd->sge_count = 0;
7659 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7660 dcmd->timeout = 0;
7661 dcmd->pad_0 = 0;
7662 dcmd->data_xfer_len = 0;
7663 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7664 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7665
7666 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7667 != DCMD_SUCCESS) {
7668 dev_err(&instance->pdev->dev,
7669 "return from %s %d\n", __func__, __LINE__);
7670 return;
7671 }
7672
7673 megasas_return_cmd(instance, cmd);
7674 }
7675
7676 /**
7677 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7678 * @instance: Adapter soft state
7679 * @opcode: Shutdown/Hibernate
7680 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7681 static void megasas_shutdown_controller(struct megasas_instance *instance,
7682 u32 opcode)
7683 {
7684 struct megasas_cmd *cmd;
7685 struct megasas_dcmd_frame *dcmd;
7686
7687 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7688 return;
7689
7690 cmd = megasas_get_cmd(instance);
7691
7692 if (!cmd)
7693 return;
7694
7695 if (instance->aen_cmd)
7696 megasas_issue_blocked_abort_cmd(instance,
7697 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7698 if (instance->map_update_cmd)
7699 megasas_issue_blocked_abort_cmd(instance,
7700 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7701 if (instance->jbod_seq_cmd)
7702 megasas_issue_blocked_abort_cmd(instance,
7703 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7704
7705 dcmd = &cmd->frame->dcmd;
7706
7707 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7708
7709 dcmd->cmd = MFI_CMD_DCMD;
7710 dcmd->cmd_status = 0x0;
7711 dcmd->sge_count = 0;
7712 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7713 dcmd->timeout = 0;
7714 dcmd->pad_0 = 0;
7715 dcmd->data_xfer_len = 0;
7716 dcmd->opcode = cpu_to_le32(opcode);
7717
7718 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7719 != DCMD_SUCCESS) {
7720 dev_err(&instance->pdev->dev,
7721 "return from %s %d\n", __func__, __LINE__);
7722 return;
7723 }
7724
7725 megasas_return_cmd(instance, cmd);
7726 }
7727
7728 /**
7729 * megasas_suspend - driver suspend entry point
7730 * @dev: Device structure
7731 */
7732 static int __maybe_unused
megasas_suspend(struct device * dev)7733 megasas_suspend(struct device *dev)
7734 {
7735 struct megasas_instance *instance;
7736
7737 instance = dev_get_drvdata(dev);
7738
7739 if (!instance)
7740 return 0;
7741
7742 instance->unload = 1;
7743
7744 dev_info(dev, "%s is called\n", __func__);
7745
7746 /* Shutdown SR-IOV heartbeat timer */
7747 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7748 del_timer_sync(&instance->sriov_heartbeat_timer);
7749
7750 /* Stop the FW fault detection watchdog */
7751 if (instance->adapter_type != MFI_SERIES)
7752 megasas_fusion_stop_watchdog(instance);
7753
7754 megasas_flush_cache(instance);
7755 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7756
7757 /* cancel the delayed work if this work still in queue */
7758 if (instance->ev != NULL) {
7759 struct megasas_aen_event *ev = instance->ev;
7760 cancel_delayed_work_sync(&ev->hotplug_work);
7761 instance->ev = NULL;
7762 }
7763
7764 tasklet_kill(&instance->isr_tasklet);
7765
7766 pci_set_drvdata(instance->pdev, instance);
7767 instance->instancet->disable_intr(instance);
7768
7769 megasas_destroy_irqs(instance);
7770
7771 if (instance->msix_vectors)
7772 pci_free_irq_vectors(instance->pdev);
7773
7774 return 0;
7775 }
7776
7777 /**
7778 * megasas_resume- driver resume entry point
7779 * @dev: Device structure
7780 */
7781 static int __maybe_unused
megasas_resume(struct device * dev)7782 megasas_resume(struct device *dev)
7783 {
7784 int rval;
7785 struct Scsi_Host *host;
7786 struct megasas_instance *instance;
7787 u32 status_reg;
7788
7789 instance = dev_get_drvdata(dev);
7790
7791 if (!instance)
7792 return 0;
7793
7794 host = instance->host;
7795
7796 dev_info(dev, "%s is called\n", __func__);
7797
7798 /*
7799 * We expect the FW state to be READY
7800 */
7801
7802 if (megasas_transition_to_ready(instance, 0)) {
7803 dev_info(&instance->pdev->dev,
7804 "Failed to transition controller to ready from %s!\n",
7805 __func__);
7806 if (instance->adapter_type != MFI_SERIES) {
7807 status_reg =
7808 instance->instancet->read_fw_status_reg(instance);
7809 if (!(status_reg & MFI_RESET_ADAPTER) ||
7810 ((megasas_adp_reset_wait_for_ready
7811 (instance, true, 0)) == FAILED))
7812 goto fail_ready_state;
7813 } else {
7814 atomic_set(&instance->fw_reset_no_pci_access, 1);
7815 instance->instancet->adp_reset
7816 (instance, instance->reg_set);
7817 atomic_set(&instance->fw_reset_no_pci_access, 0);
7818
7819 /* waiting for about 30 seconds before retry */
7820 ssleep(30);
7821
7822 if (megasas_transition_to_ready(instance, 0))
7823 goto fail_ready_state;
7824 }
7825
7826 dev_info(&instance->pdev->dev,
7827 "FW restarted successfully from %s!\n",
7828 __func__);
7829 }
7830 if (megasas_set_dma_mask(instance))
7831 goto fail_set_dma_mask;
7832
7833 /*
7834 * Initialize MFI Firmware
7835 */
7836
7837 atomic_set(&instance->fw_outstanding, 0);
7838 atomic_set(&instance->ldio_outstanding, 0);
7839
7840 /* Now re-enable MSI-X */
7841 if (instance->msix_vectors)
7842 megasas_alloc_irq_vectors(instance);
7843
7844 if (!instance->msix_vectors) {
7845 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7846 PCI_IRQ_LEGACY);
7847 if (rval < 0)
7848 goto fail_reenable_msix;
7849 }
7850
7851 megasas_setup_reply_map(instance);
7852
7853 if (instance->adapter_type != MFI_SERIES) {
7854 megasas_reset_reply_desc(instance);
7855 if (megasas_ioc_init_fusion(instance)) {
7856 megasas_free_cmds(instance);
7857 megasas_free_cmds_fusion(instance);
7858 goto fail_init_mfi;
7859 }
7860 if (!megasas_get_map_info(instance))
7861 megasas_sync_map_info(instance);
7862 } else {
7863 *instance->producer = 0;
7864 *instance->consumer = 0;
7865 if (megasas_issue_init_mfi(instance))
7866 goto fail_init_mfi;
7867 }
7868
7869 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7870 goto fail_init_mfi;
7871
7872 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7873 (unsigned long)instance);
7874
7875 if (instance->msix_vectors ?
7876 megasas_setup_irqs_msix(instance, 0) :
7877 megasas_setup_irqs_ioapic(instance))
7878 goto fail_init_mfi;
7879
7880 if (instance->adapter_type != MFI_SERIES)
7881 megasas_setup_irq_poll(instance);
7882
7883 /* Re-launch SR-IOV heartbeat timer */
7884 if (instance->requestorId) {
7885 if (!megasas_sriov_start_heartbeat(instance, 0))
7886 megasas_start_timer(instance);
7887 else {
7888 instance->skip_heartbeat_timer_del = 1;
7889 goto fail_init_mfi;
7890 }
7891 }
7892
7893 instance->instancet->enable_intr(instance);
7894 megasas_setup_jbod_map(instance);
7895 instance->unload = 0;
7896
7897 /*
7898 * Initiate AEN (Asynchronous Event Notification)
7899 */
7900 if (megasas_start_aen(instance))
7901 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7902
7903 /* Re-launch FW fault watchdog */
7904 if (instance->adapter_type != MFI_SERIES)
7905 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7906 goto fail_start_watchdog;
7907
7908 return 0;
7909
7910 fail_start_watchdog:
7911 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7912 del_timer_sync(&instance->sriov_heartbeat_timer);
7913 fail_init_mfi:
7914 megasas_free_ctrl_dma_buffers(instance);
7915 megasas_free_ctrl_mem(instance);
7916 scsi_host_put(host);
7917
7918 fail_reenable_msix:
7919 fail_set_dma_mask:
7920 fail_ready_state:
7921
7922 return -ENODEV;
7923 }
7924
7925 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7926 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7927 {
7928 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7929 int i;
7930 u8 adp_state;
7931
7932 for (i = 0; i < wait_time; i++) {
7933 adp_state = atomic_read(&instance->adprecovery);
7934 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7935 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7936 break;
7937
7938 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7939 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7940
7941 msleep(1000);
7942 }
7943
7944 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7945 dev_info(&instance->pdev->dev,
7946 "%s HBA failed to become operational, adp_state %d\n",
7947 __func__, adp_state);
7948 return 1;
7949 }
7950
7951 return 0;
7952 }
7953
7954 /**
7955 * megasas_detach_one - PCI hot"un"plug entry point
7956 * @pdev: PCI device structure
7957 */
megasas_detach_one(struct pci_dev * pdev)7958 static void megasas_detach_one(struct pci_dev *pdev)
7959 {
7960 int i;
7961 struct Scsi_Host *host;
7962 struct megasas_instance *instance;
7963 struct fusion_context *fusion;
7964 size_t pd_seq_map_sz;
7965
7966 instance = pci_get_drvdata(pdev);
7967
7968 if (!instance)
7969 return;
7970
7971 host = instance->host;
7972 fusion = instance->ctrl_context;
7973
7974 /* Shutdown SR-IOV heartbeat timer */
7975 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7976 del_timer_sync(&instance->sriov_heartbeat_timer);
7977
7978 /* Stop the FW fault detection watchdog */
7979 if (instance->adapter_type != MFI_SERIES)
7980 megasas_fusion_stop_watchdog(instance);
7981
7982 if (instance->fw_crash_state != UNAVAILABLE)
7983 megasas_free_host_crash_buffer(instance);
7984 scsi_remove_host(instance->host);
7985 instance->unload = 1;
7986
7987 if (megasas_wait_for_adapter_operational(instance))
7988 goto skip_firing_dcmds;
7989
7990 megasas_flush_cache(instance);
7991 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7992
7993 skip_firing_dcmds:
7994 /* cancel the delayed work if this work still in queue*/
7995 if (instance->ev != NULL) {
7996 struct megasas_aen_event *ev = instance->ev;
7997 cancel_delayed_work_sync(&ev->hotplug_work);
7998 instance->ev = NULL;
7999 }
8000
8001 /* cancel all wait events */
8002 wake_up_all(&instance->int_cmd_wait_q);
8003
8004 tasklet_kill(&instance->isr_tasklet);
8005
8006 /*
8007 * Take the instance off the instance array. Note that we will not
8008 * decrement the max_index. We let this array be sparse array
8009 */
8010 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8011 if (megasas_mgmt_info.instance[i] == instance) {
8012 megasas_mgmt_info.count--;
8013 megasas_mgmt_info.instance[i] = NULL;
8014
8015 break;
8016 }
8017 }
8018
8019 instance->instancet->disable_intr(instance);
8020
8021 megasas_destroy_irqs(instance);
8022
8023 if (instance->msix_vectors)
8024 pci_free_irq_vectors(instance->pdev);
8025
8026 if (instance->adapter_type >= VENTURA_SERIES) {
8027 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8028 kfree(fusion->stream_detect_by_ld[i]);
8029 kfree(fusion->stream_detect_by_ld);
8030 fusion->stream_detect_by_ld = NULL;
8031 }
8032
8033
8034 if (instance->adapter_type != MFI_SERIES) {
8035 megasas_release_fusion(instance);
8036 pd_seq_map_sz =
8037 struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0,
8038 seq, MAX_PHYSICAL_DEVICES);
8039 for (i = 0; i < 2 ; i++) {
8040 if (fusion->ld_map[i])
8041 dma_free_coherent(&instance->pdev->dev,
8042 fusion->max_map_sz,
8043 fusion->ld_map[i],
8044 fusion->ld_map_phys[i]);
8045 if (fusion->ld_drv_map[i]) {
8046 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8047 vfree(fusion->ld_drv_map[i]);
8048 else
8049 free_pages((ulong)fusion->ld_drv_map[i],
8050 fusion->drv_map_pages);
8051 }
8052
8053 if (fusion->pd_seq_sync[i])
8054 dma_free_coherent(&instance->pdev->dev,
8055 pd_seq_map_sz,
8056 fusion->pd_seq_sync[i],
8057 fusion->pd_seq_phys[i]);
8058 }
8059 } else {
8060 megasas_release_mfi(instance);
8061 }
8062
8063 if (instance->vf_affiliation)
8064 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8065 sizeof(struct MR_LD_VF_AFFILIATION),
8066 instance->vf_affiliation,
8067 instance->vf_affiliation_h);
8068
8069 if (instance->vf_affiliation_111)
8070 dma_free_coherent(&pdev->dev,
8071 sizeof(struct MR_LD_VF_AFFILIATION_111),
8072 instance->vf_affiliation_111,
8073 instance->vf_affiliation_111_h);
8074
8075 if (instance->hb_host_mem)
8076 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8077 instance->hb_host_mem,
8078 instance->hb_host_mem_h);
8079
8080 megasas_free_ctrl_dma_buffers(instance);
8081
8082 megasas_free_ctrl_mem(instance);
8083
8084 megasas_destroy_debugfs(instance);
8085
8086 scsi_host_put(host);
8087
8088 pci_disable_device(pdev);
8089 }
8090
8091 /**
8092 * megasas_shutdown - Shutdown entry point
8093 * @pdev: PCI device structure
8094 */
megasas_shutdown(struct pci_dev * pdev)8095 static void megasas_shutdown(struct pci_dev *pdev)
8096 {
8097 struct megasas_instance *instance = pci_get_drvdata(pdev);
8098
8099 if (!instance)
8100 return;
8101
8102 instance->unload = 1;
8103
8104 if (megasas_wait_for_adapter_operational(instance))
8105 goto skip_firing_dcmds;
8106
8107 megasas_flush_cache(instance);
8108 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8109
8110 skip_firing_dcmds:
8111 instance->instancet->disable_intr(instance);
8112 megasas_destroy_irqs(instance);
8113
8114 if (instance->msix_vectors)
8115 pci_free_irq_vectors(instance->pdev);
8116 }
8117
8118 /*
8119 * megasas_mgmt_open - char node "open" entry point
8120 * @inode: char node inode
8121 * @filep: char node file
8122 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8123 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8124 {
8125 /*
8126 * Allow only those users with admin rights
8127 */
8128 if (!capable(CAP_SYS_ADMIN))
8129 return -EACCES;
8130
8131 return 0;
8132 }
8133
8134 /*
8135 * megasas_mgmt_fasync - Async notifier registration from applications
8136 * @fd: char node file descriptor number
8137 * @filep: char node file
8138 * @mode: notifier on/off
8139 *
8140 * This function adds the calling process to a driver global queue. When an
8141 * event occurs, SIGIO will be sent to all processes in this queue.
8142 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8143 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8144 {
8145 int rc;
8146
8147 mutex_lock(&megasas_async_queue_mutex);
8148
8149 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8150
8151 mutex_unlock(&megasas_async_queue_mutex);
8152
8153 if (rc >= 0) {
8154 /* For sanity check when we get ioctl */
8155 filep->private_data = filep;
8156 return 0;
8157 }
8158
8159 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8160
8161 return rc;
8162 }
8163
8164 /*
8165 * megasas_mgmt_poll - char node "poll" entry point
8166 * @filep: char node file
8167 * @wait: Events to poll for
8168 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8169 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8170 {
8171 __poll_t mask;
8172 unsigned long flags;
8173
8174 poll_wait(file, &megasas_poll_wait, wait);
8175 spin_lock_irqsave(&poll_aen_lock, flags);
8176 if (megasas_poll_wait_aen)
8177 mask = (EPOLLIN | EPOLLRDNORM);
8178 else
8179 mask = 0;
8180 megasas_poll_wait_aen = 0;
8181 spin_unlock_irqrestore(&poll_aen_lock, flags);
8182 return mask;
8183 }
8184
8185 /*
8186 * megasas_set_crash_dump_params_ioctl:
8187 * Send CRASH_DUMP_MODE DCMD to all controllers
8188 * @cmd: MFI command frame
8189 */
8190
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8191 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8192 {
8193 struct megasas_instance *local_instance;
8194 int i, error = 0;
8195 int crash_support;
8196
8197 crash_support = cmd->frame->dcmd.mbox.w[0];
8198
8199 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8200 local_instance = megasas_mgmt_info.instance[i];
8201 if (local_instance && local_instance->crash_dump_drv_support) {
8202 if ((atomic_read(&local_instance->adprecovery) ==
8203 MEGASAS_HBA_OPERATIONAL) &&
8204 !megasas_set_crash_dump_params(local_instance,
8205 crash_support)) {
8206 local_instance->crash_dump_app_support =
8207 crash_support;
8208 dev_info(&local_instance->pdev->dev,
8209 "Application firmware crash "
8210 "dump mode set success\n");
8211 error = 0;
8212 } else {
8213 dev_info(&local_instance->pdev->dev,
8214 "Application firmware crash "
8215 "dump mode set failed\n");
8216 error = -1;
8217 }
8218 }
8219 }
8220 return error;
8221 }
8222
8223 /**
8224 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8225 * @instance: Adapter soft state
8226 * @user_ioc: User's ioctl packet
8227 * @ioc: ioctl packet
8228 */
8229 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8230 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8231 struct megasas_iocpacket __user * user_ioc,
8232 struct megasas_iocpacket *ioc)
8233 {
8234 struct megasas_sge64 *kern_sge64 = NULL;
8235 struct megasas_sge32 *kern_sge32 = NULL;
8236 struct megasas_cmd *cmd;
8237 void *kbuff_arr[MAX_IOCTL_SGE];
8238 dma_addr_t buf_handle = 0;
8239 int error = 0, i;
8240 void *sense = NULL;
8241 dma_addr_t sense_handle;
8242 void *sense_ptr;
8243 u32 opcode = 0;
8244 int ret = DCMD_SUCCESS;
8245
8246 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8247
8248 if (ioc->sge_count > MAX_IOCTL_SGE) {
8249 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8250 ioc->sge_count, MAX_IOCTL_SGE);
8251 return -EINVAL;
8252 }
8253
8254 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8255 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8256 !instance->support_nvme_passthru) ||
8257 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8258 !instance->support_pci_lane_margining)) {
8259 dev_err(&instance->pdev->dev,
8260 "Received invalid ioctl command 0x%x\n",
8261 ioc->frame.hdr.cmd);
8262 return -ENOTSUPP;
8263 }
8264
8265 cmd = megasas_get_cmd(instance);
8266 if (!cmd) {
8267 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8268 return -ENOMEM;
8269 }
8270
8271 /*
8272 * User's IOCTL packet has 2 frames (maximum). Copy those two
8273 * frames into our cmd's frames. cmd->frame's context will get
8274 * overwritten when we copy from user's frames. So set that value
8275 * alone separately
8276 */
8277 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8278 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8279 cmd->frame->hdr.pad_0 = 0;
8280
8281 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8282
8283 if (instance->consistent_mask_64bit)
8284 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8285 MFI_FRAME_SENSE64));
8286 else
8287 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8288 MFI_FRAME_SENSE64));
8289
8290 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8291 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8292
8293 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8294 mutex_lock(&instance->reset_mutex);
8295 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8296 megasas_return_cmd(instance, cmd);
8297 mutex_unlock(&instance->reset_mutex);
8298 return -1;
8299 }
8300 mutex_unlock(&instance->reset_mutex);
8301 }
8302
8303 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8304 error = megasas_set_crash_dump_params_ioctl(cmd);
8305 megasas_return_cmd(instance, cmd);
8306 return error;
8307 }
8308
8309 /*
8310 * The management interface between applications and the fw uses
8311 * MFI frames. E.g, RAID configuration changes, LD property changes
8312 * etc are accomplishes through different kinds of MFI frames. The
8313 * driver needs to care only about substituting user buffers with
8314 * kernel buffers in SGLs. The location of SGL is embedded in the
8315 * struct iocpacket itself.
8316 */
8317 if (instance->consistent_mask_64bit)
8318 kern_sge64 = (struct megasas_sge64 *)
8319 ((unsigned long)cmd->frame + ioc->sgl_off);
8320 else
8321 kern_sge32 = (struct megasas_sge32 *)
8322 ((unsigned long)cmd->frame + ioc->sgl_off);
8323
8324 /*
8325 * For each user buffer, create a mirror buffer and copy in
8326 */
8327 for (i = 0; i < ioc->sge_count; i++) {
8328 if (!ioc->sgl[i].iov_len)
8329 continue;
8330
8331 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8332 ioc->sgl[i].iov_len,
8333 &buf_handle, GFP_KERNEL);
8334 if (!kbuff_arr[i]) {
8335 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8336 "kernel SGL buffer for IOCTL\n");
8337 error = -ENOMEM;
8338 goto out;
8339 }
8340
8341 /*
8342 * We don't change the dma_coherent_mask, so
8343 * dma_alloc_coherent only returns 32bit addresses
8344 */
8345 if (instance->consistent_mask_64bit) {
8346 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8347 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8348 } else {
8349 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8350 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8351 }
8352
8353 /*
8354 * We created a kernel buffer corresponding to the
8355 * user buffer. Now copy in from the user buffer
8356 */
8357 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8358 (u32) (ioc->sgl[i].iov_len))) {
8359 error = -EFAULT;
8360 goto out;
8361 }
8362 }
8363
8364 if (ioc->sense_len) {
8365 /* make sure the pointer is part of the frame */
8366 if (ioc->sense_off >
8367 (sizeof(union megasas_frame) - sizeof(__le64))) {
8368 error = -EINVAL;
8369 goto out;
8370 }
8371
8372 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8373 &sense_handle, GFP_KERNEL);
8374 if (!sense) {
8375 error = -ENOMEM;
8376 goto out;
8377 }
8378
8379 /* always store 64 bits regardless of addressing */
8380 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8381 put_unaligned_le64(sense_handle, sense_ptr);
8382 }
8383
8384 /*
8385 * Set the sync_cmd flag so that the ISR knows not to complete this
8386 * cmd to the SCSI mid-layer
8387 */
8388 cmd->sync_cmd = 1;
8389
8390 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8391 switch (ret) {
8392 case DCMD_INIT:
8393 case DCMD_BUSY:
8394 cmd->sync_cmd = 0;
8395 dev_err(&instance->pdev->dev,
8396 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8397 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8398 cmd->cmd_status_drv);
8399 error = -EBUSY;
8400 goto out;
8401 }
8402
8403 cmd->sync_cmd = 0;
8404
8405 if (instance->unload == 1) {
8406 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8407 "don't submit data to application\n");
8408 goto out;
8409 }
8410 /*
8411 * copy out the kernel buffers to user buffers
8412 */
8413 for (i = 0; i < ioc->sge_count; i++) {
8414 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8415 ioc->sgl[i].iov_len)) {
8416 error = -EFAULT;
8417 goto out;
8418 }
8419 }
8420
8421 /*
8422 * copy out the sense
8423 */
8424 if (ioc->sense_len) {
8425 void __user *uptr;
8426 /*
8427 * sense_ptr points to the location that has the user
8428 * sense buffer address
8429 */
8430 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8431 if (in_compat_syscall())
8432 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8433 sense_ptr));
8434 else
8435 uptr = get_unaligned((void __user **)sense_ptr);
8436
8437 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8438 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8439 "sense data\n");
8440 error = -EFAULT;
8441 goto out;
8442 }
8443 }
8444
8445 /*
8446 * copy the status codes returned by the fw
8447 */
8448 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8449 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8450 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8451 error = -EFAULT;
8452 }
8453
8454 out:
8455 if (sense) {
8456 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8457 sense, sense_handle);
8458 }
8459
8460 for (i = 0; i < ioc->sge_count; i++) {
8461 if (kbuff_arr[i]) {
8462 if (instance->consistent_mask_64bit)
8463 dma_free_coherent(&instance->pdev->dev,
8464 le32_to_cpu(kern_sge64[i].length),
8465 kbuff_arr[i],
8466 le64_to_cpu(kern_sge64[i].phys_addr));
8467 else
8468 dma_free_coherent(&instance->pdev->dev,
8469 le32_to_cpu(kern_sge32[i].length),
8470 kbuff_arr[i],
8471 le32_to_cpu(kern_sge32[i].phys_addr));
8472 kbuff_arr[i] = NULL;
8473 }
8474 }
8475
8476 megasas_return_cmd(instance, cmd);
8477 return error;
8478 }
8479
8480 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8481 megasas_compat_iocpacket_get_user(void __user *arg)
8482 {
8483 struct megasas_iocpacket *ioc;
8484 struct compat_megasas_iocpacket __user *cioc = arg;
8485 size_t size;
8486 int err = -EFAULT;
8487 int i;
8488
8489 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8490 if (!ioc)
8491 return ERR_PTR(-ENOMEM);
8492 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8493 if (copy_from_user(ioc, arg, size))
8494 goto out;
8495
8496 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8497 compat_uptr_t iov_base;
8498
8499 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8500 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8501 goto out;
8502
8503 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8504 }
8505
8506 return ioc;
8507 out:
8508 kfree(ioc);
8509 return ERR_PTR(err);
8510 }
8511
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8512 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8513 {
8514 struct megasas_iocpacket __user *user_ioc =
8515 (struct megasas_iocpacket __user *)arg;
8516 struct megasas_iocpacket *ioc;
8517 struct megasas_instance *instance;
8518 int error;
8519
8520 if (in_compat_syscall())
8521 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8522 else
8523 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8524
8525 if (IS_ERR(ioc))
8526 return PTR_ERR(ioc);
8527
8528 instance = megasas_lookup_instance(ioc->host_no);
8529 if (!instance) {
8530 error = -ENODEV;
8531 goto out_kfree_ioc;
8532 }
8533
8534 /* Block ioctls in VF mode */
8535 if (instance->requestorId && !allow_vf_ioctls) {
8536 error = -ENODEV;
8537 goto out_kfree_ioc;
8538 }
8539
8540 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8541 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8542 error = -ENODEV;
8543 goto out_kfree_ioc;
8544 }
8545
8546 if (instance->unload == 1) {
8547 error = -ENODEV;
8548 goto out_kfree_ioc;
8549 }
8550
8551 if (down_interruptible(&instance->ioctl_sem)) {
8552 error = -ERESTARTSYS;
8553 goto out_kfree_ioc;
8554 }
8555
8556 if (megasas_wait_for_adapter_operational(instance)) {
8557 error = -ENODEV;
8558 goto out_up;
8559 }
8560
8561 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8562 out_up:
8563 up(&instance->ioctl_sem);
8564
8565 out_kfree_ioc:
8566 kfree(ioc);
8567 return error;
8568 }
8569
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8570 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8571 {
8572 struct megasas_instance *instance;
8573 struct megasas_aen aen;
8574 int error;
8575
8576 if (file->private_data != file) {
8577 printk(KERN_DEBUG "megasas: fasync_helper was not "
8578 "called first\n");
8579 return -EINVAL;
8580 }
8581
8582 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8583 return -EFAULT;
8584
8585 instance = megasas_lookup_instance(aen.host_no);
8586
8587 if (!instance)
8588 return -ENODEV;
8589
8590 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8591 return -ENODEV;
8592 }
8593
8594 if (instance->unload == 1) {
8595 return -ENODEV;
8596 }
8597
8598 if (megasas_wait_for_adapter_operational(instance))
8599 return -ENODEV;
8600
8601 mutex_lock(&instance->reset_mutex);
8602 error = megasas_register_aen(instance, aen.seq_num,
8603 aen.class_locale_word);
8604 mutex_unlock(&instance->reset_mutex);
8605 return error;
8606 }
8607
8608 /**
8609 * megasas_mgmt_ioctl - char node ioctl entry point
8610 * @file: char device file pointer
8611 * @cmd: ioctl command
8612 * @arg: ioctl command arguments address
8613 */
8614 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8615 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8616 {
8617 switch (cmd) {
8618 case MEGASAS_IOC_FIRMWARE:
8619 return megasas_mgmt_ioctl_fw(file, arg);
8620
8621 case MEGASAS_IOC_GET_AEN:
8622 return megasas_mgmt_ioctl_aen(file, arg);
8623 }
8624
8625 return -ENOTTY;
8626 }
8627
8628 #ifdef CONFIG_COMPAT
8629 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8630 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8631 unsigned long arg)
8632 {
8633 switch (cmd) {
8634 case MEGASAS_IOC_FIRMWARE32:
8635 return megasas_mgmt_ioctl_fw(file, arg);
8636 case MEGASAS_IOC_GET_AEN:
8637 return megasas_mgmt_ioctl_aen(file, arg);
8638 }
8639
8640 return -ENOTTY;
8641 }
8642 #endif
8643
8644 /*
8645 * File operations structure for management interface
8646 */
8647 static const struct file_operations megasas_mgmt_fops = {
8648 .owner = THIS_MODULE,
8649 .open = megasas_mgmt_open,
8650 .fasync = megasas_mgmt_fasync,
8651 .unlocked_ioctl = megasas_mgmt_ioctl,
8652 .poll = megasas_mgmt_poll,
8653 #ifdef CONFIG_COMPAT
8654 .compat_ioctl = megasas_mgmt_compat_ioctl,
8655 #endif
8656 .llseek = noop_llseek,
8657 };
8658
8659 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8660
8661 /*
8662 * PCI hotplug support registration structure
8663 */
8664 static struct pci_driver megasas_pci_driver = {
8665
8666 .name = "megaraid_sas",
8667 .id_table = megasas_pci_table,
8668 .probe = megasas_probe_one,
8669 .remove = megasas_detach_one,
8670 .driver.pm = &megasas_pm_ops,
8671 .shutdown = megasas_shutdown,
8672 };
8673
8674 /*
8675 * Sysfs driver attributes
8676 */
version_show(struct device_driver * dd,char * buf)8677 static ssize_t version_show(struct device_driver *dd, char *buf)
8678 {
8679 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8680 MEGASAS_VERSION);
8681 }
8682 static DRIVER_ATTR_RO(version);
8683
release_date_show(struct device_driver * dd,char * buf)8684 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8685 {
8686 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8687 MEGASAS_RELDATE);
8688 }
8689 static DRIVER_ATTR_RO(release_date);
8690
support_poll_for_event_show(struct device_driver * dd,char * buf)8691 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8692 {
8693 return sprintf(buf, "%u\n", support_poll_for_event);
8694 }
8695 static DRIVER_ATTR_RO(support_poll_for_event);
8696
support_device_change_show(struct device_driver * dd,char * buf)8697 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8698 {
8699 return sprintf(buf, "%u\n", support_device_change);
8700 }
8701 static DRIVER_ATTR_RO(support_device_change);
8702
dbg_lvl_show(struct device_driver * dd,char * buf)8703 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8704 {
8705 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8706 }
8707
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8708 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8709 size_t count)
8710 {
8711 int retval = count;
8712
8713 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8714 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8715 retval = -EINVAL;
8716 }
8717 return retval;
8718 }
8719 static DRIVER_ATTR_RW(dbg_lvl);
8720
8721 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8722 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8723 {
8724 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8725 }
8726
8727 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8728
8729 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8730 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8731 {
8732 return sprintf(buf, "%u\n", support_pci_lane_margining);
8733 }
8734
8735 static DRIVER_ATTR_RO(support_pci_lane_margining);
8736
megasas_remove_scsi_device(struct scsi_device * sdev)8737 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8738 {
8739 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8740 scsi_remove_device(sdev);
8741 scsi_device_put(sdev);
8742 }
8743
8744 /**
8745 * megasas_update_device_list - Update the PD and LD device list from FW
8746 * after an AEN event notification
8747 * @instance: Adapter soft state
8748 * @event_type: Indicates type of event (PD or LD event)
8749 *
8750 * @return: Success or failure
8751 *
8752 * Issue DCMDs to Firmware to update the internal device list in driver.
8753 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8754 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8755 */
8756 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8757 int megasas_update_device_list(struct megasas_instance *instance,
8758 int event_type)
8759 {
8760 int dcmd_ret;
8761
8762 if (instance->enable_fw_dev_list) {
8763 return megasas_host_device_list_query(instance, false);
8764 } else {
8765 if (event_type & SCAN_PD_CHANNEL) {
8766 dcmd_ret = megasas_get_pd_list(instance);
8767 if (dcmd_ret != DCMD_SUCCESS)
8768 return dcmd_ret;
8769 }
8770
8771 if (event_type & SCAN_VD_CHANNEL) {
8772 if (!instance->requestorId ||
8773 megasas_get_ld_vf_affiliation(instance, 0)) {
8774 return megasas_ld_list_query(instance,
8775 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8776 }
8777 }
8778 }
8779 return DCMD_SUCCESS;
8780 }
8781
8782 /**
8783 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8784 * after an AEN event notification
8785 * @instance: Adapter soft state
8786 * @scan_type: Indicates type of devices (PD/LD) to add
8787 * @return void
8788 */
8789 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8790 void megasas_add_remove_devices(struct megasas_instance *instance,
8791 int scan_type)
8792 {
8793 int i, j;
8794 u16 pd_index = 0;
8795 u16 ld_index = 0;
8796 u16 channel = 0, id = 0;
8797 struct Scsi_Host *host;
8798 struct scsi_device *sdev1;
8799 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8800 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8801
8802 host = instance->host;
8803
8804 if (instance->enable_fw_dev_list) {
8805 targetid_list = instance->host_device_list_buf;
8806 for (i = 0; i < targetid_list->count; i++) {
8807 targetid_entry = &targetid_list->host_device_list[i];
8808 if (targetid_entry->flags.u.bits.is_sys_pd) {
8809 channel = le16_to_cpu(targetid_entry->target_id) /
8810 MEGASAS_MAX_DEV_PER_CHANNEL;
8811 id = le16_to_cpu(targetid_entry->target_id) %
8812 MEGASAS_MAX_DEV_PER_CHANNEL;
8813 } else {
8814 channel = MEGASAS_MAX_PD_CHANNELS +
8815 (le16_to_cpu(targetid_entry->target_id) /
8816 MEGASAS_MAX_DEV_PER_CHANNEL);
8817 id = le16_to_cpu(targetid_entry->target_id) %
8818 MEGASAS_MAX_DEV_PER_CHANNEL;
8819 }
8820 sdev1 = scsi_device_lookup(host, channel, id, 0);
8821 if (!sdev1) {
8822 scsi_add_device(host, channel, id, 0);
8823 } else {
8824 scsi_device_put(sdev1);
8825 }
8826 }
8827 }
8828
8829 if (scan_type & SCAN_PD_CHANNEL) {
8830 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8831 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8832 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8833 sdev1 = scsi_device_lookup(host, i, j, 0);
8834 if (instance->pd_list[pd_index].driveState ==
8835 MR_PD_STATE_SYSTEM) {
8836 if (!sdev1)
8837 scsi_add_device(host, i, j, 0);
8838 else
8839 scsi_device_put(sdev1);
8840 } else {
8841 if (sdev1)
8842 megasas_remove_scsi_device(sdev1);
8843 }
8844 }
8845 }
8846 }
8847
8848 if (scan_type & SCAN_VD_CHANNEL) {
8849 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8850 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8851 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8852 sdev1 = scsi_device_lookup(host,
8853 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8854 if (instance->ld_ids[ld_index] != 0xff) {
8855 if (!sdev1)
8856 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8857 else
8858 scsi_device_put(sdev1);
8859 } else {
8860 if (sdev1)
8861 megasas_remove_scsi_device(sdev1);
8862 }
8863 }
8864 }
8865 }
8866
8867 }
8868
8869 static void
megasas_aen_polling(struct work_struct * work)8870 megasas_aen_polling(struct work_struct *work)
8871 {
8872 struct megasas_aen_event *ev =
8873 container_of(work, struct megasas_aen_event, hotplug_work.work);
8874 struct megasas_instance *instance = ev->instance;
8875 union megasas_evt_class_locale class_locale;
8876 int event_type = 0;
8877 u32 seq_num;
8878 u16 ld_target_id;
8879 int error;
8880 u8 dcmd_ret = DCMD_SUCCESS;
8881 struct scsi_device *sdev1;
8882
8883 if (!instance) {
8884 printk(KERN_ERR "invalid instance!\n");
8885 kfree(ev);
8886 return;
8887 }
8888
8889 /* Don't run the event workqueue thread if OCR is running */
8890 mutex_lock(&instance->reset_mutex);
8891
8892 instance->ev = NULL;
8893 if (instance->evt_detail) {
8894 megasas_decode_evt(instance);
8895
8896 switch (le32_to_cpu(instance->evt_detail->code)) {
8897
8898 case MR_EVT_PD_INSERTED:
8899 case MR_EVT_PD_REMOVED:
8900 event_type = SCAN_PD_CHANNEL;
8901 break;
8902
8903 case MR_EVT_LD_OFFLINE:
8904 case MR_EVT_LD_DELETED:
8905 ld_target_id = instance->evt_detail->args.ld.target_id;
8906 sdev1 = scsi_device_lookup(instance->host,
8907 MEGASAS_MAX_PD_CHANNELS +
8908 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8909 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8910 0);
8911 if (sdev1)
8912 megasas_remove_scsi_device(sdev1);
8913
8914 event_type = SCAN_VD_CHANNEL;
8915 break;
8916 case MR_EVT_LD_CREATED:
8917 event_type = SCAN_VD_CHANNEL;
8918 break;
8919
8920 case MR_EVT_CFG_CLEARED:
8921 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8922 case MR_EVT_FOREIGN_CFG_IMPORTED:
8923 case MR_EVT_LD_STATE_CHANGE:
8924 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8925 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8926 instance->host->host_no);
8927 break;
8928
8929 case MR_EVT_CTRL_PROP_CHANGED:
8930 dcmd_ret = megasas_get_ctrl_info(instance);
8931 if (dcmd_ret == DCMD_SUCCESS &&
8932 instance->snapdump_wait_time) {
8933 megasas_get_snapdump_properties(instance);
8934 dev_info(&instance->pdev->dev,
8935 "Snap dump wait time\t: %d\n",
8936 instance->snapdump_wait_time);
8937 }
8938 break;
8939 default:
8940 event_type = 0;
8941 break;
8942 }
8943 } else {
8944 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8945 mutex_unlock(&instance->reset_mutex);
8946 kfree(ev);
8947 return;
8948 }
8949
8950 if (event_type)
8951 dcmd_ret = megasas_update_device_list(instance, event_type);
8952
8953 mutex_unlock(&instance->reset_mutex);
8954
8955 if (event_type && dcmd_ret == DCMD_SUCCESS)
8956 megasas_add_remove_devices(instance, event_type);
8957
8958 if (dcmd_ret == DCMD_SUCCESS)
8959 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8960 else
8961 seq_num = instance->last_seq_num;
8962
8963 /* Register AEN with FW for latest sequence number plus 1 */
8964 class_locale.members.reserved = 0;
8965 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8966 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8967
8968 if (instance->aen_cmd != NULL) {
8969 kfree(ev);
8970 return;
8971 }
8972
8973 mutex_lock(&instance->reset_mutex);
8974 error = megasas_register_aen(instance, seq_num,
8975 class_locale.word);
8976 if (error)
8977 dev_err(&instance->pdev->dev,
8978 "register aen failed error %x\n", error);
8979
8980 mutex_unlock(&instance->reset_mutex);
8981 kfree(ev);
8982 }
8983
8984 /**
8985 * megasas_init - Driver load entry point
8986 */
megasas_init(void)8987 static int __init megasas_init(void)
8988 {
8989 int rval;
8990
8991 /*
8992 * Booted in kdump kernel, minimize memory footprints by
8993 * disabling few features
8994 */
8995 if (reset_devices) {
8996 msix_vectors = 1;
8997 rdpq_enable = 0;
8998 dual_qdepth_disable = 1;
8999 poll_queues = 0;
9000 }
9001
9002 /*
9003 * Announce driver version and other information
9004 */
9005 pr_info("megasas: %s\n", MEGASAS_VERSION);
9006
9007 megasas_dbg_lvl = 0;
9008 support_poll_for_event = 2;
9009 support_device_change = 1;
9010 support_nvme_encapsulation = true;
9011 support_pci_lane_margining = true;
9012
9013 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9014
9015 /*
9016 * Register character device node
9017 */
9018 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9019
9020 if (rval < 0) {
9021 printk(KERN_DEBUG "megasas: failed to open device node\n");
9022 return rval;
9023 }
9024
9025 megasas_mgmt_majorno = rval;
9026
9027 megasas_init_debugfs();
9028
9029 /*
9030 * Register ourselves as PCI hotplug module
9031 */
9032 rval = pci_register_driver(&megasas_pci_driver);
9033
9034 if (rval) {
9035 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9036 goto err_pcidrv;
9037 }
9038
9039 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9040 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9041 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9042 event_log_level = MFI_EVT_CLASS_CRITICAL;
9043 }
9044
9045 rval = driver_create_file(&megasas_pci_driver.driver,
9046 &driver_attr_version);
9047 if (rval)
9048 goto err_dcf_attr_ver;
9049
9050 rval = driver_create_file(&megasas_pci_driver.driver,
9051 &driver_attr_release_date);
9052 if (rval)
9053 goto err_dcf_rel_date;
9054
9055 rval = driver_create_file(&megasas_pci_driver.driver,
9056 &driver_attr_support_poll_for_event);
9057 if (rval)
9058 goto err_dcf_support_poll_for_event;
9059
9060 rval = driver_create_file(&megasas_pci_driver.driver,
9061 &driver_attr_dbg_lvl);
9062 if (rval)
9063 goto err_dcf_dbg_lvl;
9064 rval = driver_create_file(&megasas_pci_driver.driver,
9065 &driver_attr_support_device_change);
9066 if (rval)
9067 goto err_dcf_support_device_change;
9068
9069 rval = driver_create_file(&megasas_pci_driver.driver,
9070 &driver_attr_support_nvme_encapsulation);
9071 if (rval)
9072 goto err_dcf_support_nvme_encapsulation;
9073
9074 rval = driver_create_file(&megasas_pci_driver.driver,
9075 &driver_attr_support_pci_lane_margining);
9076 if (rval)
9077 goto err_dcf_support_pci_lane_margining;
9078
9079 return rval;
9080
9081 err_dcf_support_pci_lane_margining:
9082 driver_remove_file(&megasas_pci_driver.driver,
9083 &driver_attr_support_nvme_encapsulation);
9084
9085 err_dcf_support_nvme_encapsulation:
9086 driver_remove_file(&megasas_pci_driver.driver,
9087 &driver_attr_support_device_change);
9088
9089 err_dcf_support_device_change:
9090 driver_remove_file(&megasas_pci_driver.driver,
9091 &driver_attr_dbg_lvl);
9092 err_dcf_dbg_lvl:
9093 driver_remove_file(&megasas_pci_driver.driver,
9094 &driver_attr_support_poll_for_event);
9095 err_dcf_support_poll_for_event:
9096 driver_remove_file(&megasas_pci_driver.driver,
9097 &driver_attr_release_date);
9098 err_dcf_rel_date:
9099 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9100 err_dcf_attr_ver:
9101 pci_unregister_driver(&megasas_pci_driver);
9102 err_pcidrv:
9103 megasas_exit_debugfs();
9104 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9105 return rval;
9106 }
9107
9108 /**
9109 * megasas_exit - Driver unload entry point
9110 */
megasas_exit(void)9111 static void __exit megasas_exit(void)
9112 {
9113 driver_remove_file(&megasas_pci_driver.driver,
9114 &driver_attr_dbg_lvl);
9115 driver_remove_file(&megasas_pci_driver.driver,
9116 &driver_attr_support_poll_for_event);
9117 driver_remove_file(&megasas_pci_driver.driver,
9118 &driver_attr_support_device_change);
9119 driver_remove_file(&megasas_pci_driver.driver,
9120 &driver_attr_release_date);
9121 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9122 driver_remove_file(&megasas_pci_driver.driver,
9123 &driver_attr_support_nvme_encapsulation);
9124 driver_remove_file(&megasas_pci_driver.driver,
9125 &driver_attr_support_pci_lane_margining);
9126
9127 pci_unregister_driver(&megasas_pci_driver);
9128 megasas_exit_debugfs();
9129 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9130 }
9131
9132 module_init(megasas_init);
9133 module_exit(megasas_exit);
9134