1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Version : v2.10.10.1 (January 27, 2005)
18 *
19 * Authors: Atul Mukker <Atul.Mukker@lsil.com>
20 * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com>
21 *
22 * Description: Linux device driver for LSI Logic MegaRAID controller
23 *
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
25 * 518, 520, 531, 532
26 *
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the public mailing list
29 *
30 * For history of changes, see ChangeLog.megaraid.
31 *
32 */
33
34 #include <linux/mm.h>
35 #include <linux/fs.h>
36 #include <linux/blk.h>
37 #include <asm/uaccess.h>
38 #include <linux/delay.h>
39 #include <linux/reboot.h>
40 #include <linux/module.h>
41 #include <linux/list.h>
42
43 #include "sd.h"
44 #include "scsi.h"
45 #include "hosts.h"
46
47 #include "megaraid2.h"
48
49 #ifdef LSI_CONFIG_COMPAT
50 #include <asm/ioctl32.h>
51 #endif
52
53 MODULE_AUTHOR ("LSI Logic Corporation");
54 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
55 MODULE_LICENSE ("GPL");
56
57 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
58 MODULE_PARM(max_cmd_per_lun, "i");
59 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
60
61 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
62 MODULE_PARM(max_sectors_per_io, "h");
63 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
64
65
66 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
67 MODULE_PARM(max_mbox_busy_wait, "h");
68 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
69
70 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
71 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
72 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
73 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
74
75 /*
76 * Global variables
77 */
78
79 static int hba_count;
80 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
81 #ifdef CONFIG_PROC_FS
82 static struct proc_dir_entry *mega_proc_dir_entry;
83 #endif
84
85 static struct notifier_block mega_notifier = {
86 .notifier_call = megaraid_reboot_notify
87 };
88
89 /* For controller re-ordering */
90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92 /*
93 * Lock to protect access to IOCTL
94 */
95 static struct semaphore megaraid_ioc_mtx;
96
97 /*
98 * The File Operations structure for the serial/ioctl interface of the driver
99 */
100 static struct file_operations megadev_fops = {
101 .ioctl = megadev_ioctl_entry,
102 .open = megadev_open,
103 .release = megadev_close,
104 .owner = THIS_MODULE,
105 };
106
107 /*
108 * Array to structures for storing the information about the controllers. This
109 * information is sent to the user level applications, when they do an ioctl
110 * for this information.
111 */
112 static struct mcontroller mcontroller[MAX_CONTROLLERS];
113
114 /* The current driver version */
115 static u32 driver_ver = 0x02104000;
116
117 /* major number used by the device for character interface */
118 static int major;
119
120 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
121
122
123 /*
124 * Debug variable to print some diagnostic messages
125 */
126 static int trace_level;
127
128 /*
129 * megaraid_validate_parms()
130 *
131 * Validate that any module parms passed in
132 * have proper values.
133 */
134 static void
megaraid_validate_parms(void)135 megaraid_validate_parms(void)
136 {
137 if( (max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN) )
138 max_cmd_per_lun = MAX_CMD_PER_LUN;
139 if( max_mbox_busy_wait > MBOX_BUSY_WAIT )
140 max_mbox_busy_wait = MBOX_BUSY_WAIT;
141 }
142
143
144 /**
145 * megaraid_detect()
146 * @host_template - Our soft state maintained by mid-layer
147 *
148 * the detect entry point for the mid-layer.
149 * We scan the PCI bus for our controllers and start them.
150 *
151 * Note: PCI_DEVICE_ID_PERC4_DI below represents the PERC4/Di class of
152 * products. All of them share the same vendor id, device id, and subsystem
153 * vendor id but different subsystem ids. As of now, driver does not use the
154 * subsystem id.
155 * PERC4E device ids are for the PCI-Express controllers
156 */
157 static int
megaraid_detect(Scsi_Host_Template * host_template)158 megaraid_detect(Scsi_Host_Template *host_template)
159 {
160 int i;
161 u16 dev_sw_table[] = { /* Table of all supported
162 vendor/device ids */
163
164 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SATA_PCIX,
165 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4E_DC_SC,
166 PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4E_SI_DI,
167 PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
168 PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
169 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
170 PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
171 PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
172 PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
173 PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
174 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3 };
175
176
177 printk(KERN_NOTICE "megaraid: " MEGARAID_VERSION);
178
179 megaraid_validate_parms();
180
181 /*
182 * Scan PCI bus for our all devices.
183 */
184 for( i = 0; i < ((int) (sizeof(dev_sw_table)/sizeof(u16))); i += 2 ) {
185
186 mega_find_card(host_template, dev_sw_table[i],
187 dev_sw_table[i+1]);
188 }
189
190 if(hba_count) {
191 /*
192 * re-order hosts so that one with bootable logical drive
193 * comes first
194 */
195 mega_reorder_hosts();
196
197 /*
198 * Initialize the IOCTL lock
199 */
200 init_MUTEX( &megaraid_ioc_mtx );
201
202 #ifdef CONFIG_PROC_FS
203 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
204
205 if(!mega_proc_dir_entry) {
206 printk(KERN_WARNING
207 "megaraid: failed to create megaraid root\n");
208 }
209 else {
210 for(i = 0; i < hba_count; i++) {
211 mega_create_proc_entry(i, mega_proc_dir_entry);
212 }
213 }
214 #endif
215
216 /*
217 * Register the driver as a character device, for applications
218 * to access it for ioctls.
219 * First argument (major) to register_chrdev implies a dynamic
220 * major number allocation.
221 */
222 major = register_chrdev(0, "megadev", &megadev_fops);
223
224 if (major < 0) {
225 printk(KERN_WARNING
226 "megaraid: failed to register char device.\n");
227 }
228 /*
229 * Register the Shutdown Notification hook in kernel
230 */
231 if(register_reboot_notifier(&mega_notifier)) {
232 printk(KERN_WARNING
233 "MegaRAID Shutdown routine not registered!!\n");
234 }
235
236 #ifdef LSI_CONFIG_COMPAT
237 /*
238 * Register the 32-bit ioctl conversion
239 */
240 register_ioctl32_conversion(MEGAIOCCMD, megadev_compat_ioctl);
241 #endif
242
243 }
244
245 return hba_count;
246 }
247
248
249
250 /**
251 * mega_find_card() - find and start this controller
252 * @host_template - Our soft state maintained by mid-layer
253 * @pci_vendor - pci vendor id for this controller
254 * @pci_device - pci device id for this controller
255 *
256 * Scans the PCI bus for this vendor and device id combination, setup the
257 * resources, and register ourselves as a SCSI HBA driver, and setup all
258 * parameters for our soft state.
259 *
260 * This routine also checks for some buggy firmware and ajust the flags
261 * accordingly.
262 */
263 static void
mega_find_card(Scsi_Host_Template * host_template,u16 pci_vendor,u16 pci_device)264 mega_find_card(Scsi_Host_Template *host_template, u16 pci_vendor,
265 u16 pci_device)
266 {
267 struct Scsi_Host *host = NULL;
268 adapter_t *adapter = NULL;
269 u32 magic64;
270 unsigned long mega_baseport;
271 u16 subsysid, subsysvid;
272 u8 pci_bus;
273 u8 pci_dev_func;
274 u8 irq;
275 struct pci_dev *pdev = NULL;
276 u8 did_ioremap_f = 0;
277 u8 did_req_region_f = 0;
278 u8 did_scsi_reg_f = 0;
279 u8 alloc_int_buf_f = 0;
280 u8 alloc_scb_f = 0;
281 u8 got_irq_f = 0;
282 u8 did_setup_mbox_f = 0;
283 unsigned long tbase;
284 unsigned long flag = 0;
285 int i, j;
286 u8 did_int_pthru_f = 0;
287 u8 did_int_data_f = 0;
288
289 while((pdev = pci_find_device(pci_vendor, pci_device, pdev))) {
290
291 // reset flags for all controllers in this class
292 did_ioremap_f = 0;
293 did_req_region_f = 0;
294 did_scsi_reg_f = 0;
295 alloc_int_buf_f = 0;
296 alloc_scb_f = 0;
297 got_irq_f = 0;
298 did_setup_mbox_f = 0;
299
300 if(pci_enable_device (pdev)) continue;
301
302 pci_bus = pdev->bus->number;
303 pci_dev_func = pdev->devfn;
304
305 /*
306 * For these vendor and device ids, signature offsets are not
307 * valid and 64 bit is implicit
308 */
309 if( (pci_vendor == PCI_VENDOR_ID_DELL &&
310 pci_device == PCI_DEVICE_ID_PERC4_DI) ||
311 (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC &&
312 pci_device == PCI_DEVICE_ID_PERC4_QC_VERDE) ||
313 (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC &&
314 pci_device == PCI_DEVICE_ID_PERC4E_DC_SC) ||
315 (pci_vendor == PCI_VENDOR_ID_DELL &&
316 pci_device == PCI_DEVICE_ID_PERC4E_SI_DI) ||
317 (pci_vendor == PCI_VENDOR_ID_LSI_LOGIC &&
318 pci_device == PCI_DEVICE_ID_LSI_SATA_PCIX)) {
319
320 flag |= BOARD_64BIT;
321 }
322 else {
323 pci_read_config_dword(pdev, PCI_CONF_AMISIG64,
324 &magic64);
325
326 if (magic64 == HBA_SIGNATURE_64BIT)
327 flag |= BOARD_64BIT;
328 }
329
330 subsysvid = pdev->subsystem_vendor;
331 subsysid = pdev->subsystem_device;
332
333 /*
334 * If we do not find the valid subsys vendor id, refuse to
335 * load the driver. This is part of PCI200X compliance
336 * We load the driver if subsysvid is 0.
337 */
338 if( subsysvid && (subsysvid != AMI_SUBSYS_VID) &&
339 (subsysvid != DELL_SUBSYS_VID) &&
340 (subsysvid != HP_SUBSYS_VID) &&
341 (subsysvid != INTEL_SUBSYS_VID) &&
342 (subsysvid != FSC_SUBSYS_VID) &&
343 (subsysvid != ACER_SUBSYS_VID) &&
344 (subsysvid != NEC_SUBSYS_VID) &&
345 (subsysvid != LSI_SUBSYS_VID) ) continue;
346
347
348 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
349 pci_vendor, pci_device, pci_bus);
350
351 printk("slot %d:func %d\n",
352 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
353
354 /* Read the base port and IRQ from PCI */
355 mega_baseport = pci_resource_start(pdev, 0);
356 irq = pdev->irq;
357
358 tbase = mega_baseport;
359
360 if( pci_resource_flags(pdev, 0) & IORESOURCE_MEM ) {
361
362 if( check_mem_region(mega_baseport, 128) ) {
363 printk(KERN_WARNING
364 "megaraid: mem region busy!\n");
365 continue;
366 }
367 request_mem_region(mega_baseport, 128,
368 "MegaRAID: LSI Logic Corporation.");
369
370 mega_baseport =
371 (unsigned long)ioremap(mega_baseport, 128);
372
373 if( !mega_baseport ) {
374 printk(KERN_WARNING
375 "megaraid: could not map hba memory\n");
376
377 release_mem_region(tbase, 128);
378
379 continue;
380 }
381
382 flag |= BOARD_MEMMAP;
383
384 did_ioremap_f = 1;
385 }
386 else {
387 mega_baseport += 0x10;
388
389 if( !request_region(mega_baseport, 16, "megaraid") )
390 goto fail_attach;
391
392 flag |= BOARD_IOMAP;
393
394 did_req_region_f = 1;
395 }
396
397 /* Initialize SCSI Host structure */
398 host = scsi_register(host_template, sizeof(adapter_t));
399
400 if(!host) goto fail_attach;
401
402 did_scsi_reg_f = 1;
403
404 scsi_set_pci_device(host, pdev);
405
406 adapter = (adapter_t *)host->hostdata;
407 memset(adapter, 0, sizeof(adapter_t));
408
409 printk(KERN_NOTICE
410 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
411 host->host_no, mega_baseport, irq);
412
413 adapter->base = mega_baseport;
414
415 /* Copy resource info into structure */
416 INIT_LIST_HEAD(&adapter->free_list);
417 INIT_LIST_HEAD(&adapter->pending_list);
418
419 adapter->flag = flag;
420 spin_lock_init(&adapter->lock);
421
422 #ifdef SCSI_HAS_HOST_LOCK
423 # if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,9)
424 /* This is the Red Hat AS2.1 kernel */
425 adapter->host_lock = &adapter->lock;
426 host->lock = adapter->host_lock;
427 # elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
428 /* This is the later Red Hat 2.4 kernels */
429 adapter->host_lock = &adapter->lock;
430 host->host_lock = adapter->host_lock;
431 # else
432 /* This is the 2.6 and later kernel series */
433 adapter->host_lock = &adapter->lock;
434 scsi_set_host_lock(&adapter->lock);
435 # endif
436 #else
437 /* And this is the remainder of the 2.4 kernel
438 series */
439 adapter->host_lock = &io_request_lock;
440 #endif
441
442 host->cmd_per_lun = max_cmd_per_lun;
443 host->max_sectors = max_sectors_per_io;
444
445 adapter->dev = pdev;
446 adapter->host = host;
447
448 adapter->host->irq = irq;
449
450 if( flag & BOARD_MEMMAP ) {
451 adapter->host->base = tbase;
452 }
453 else {
454 adapter->host->io_port = tbase;
455 adapter->host->n_io_port = 16;
456 }
457
458 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
459
460 /*
461 * Allocate buffer to issue internal commands.
462 */
463 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
464 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
465
466 if( !adapter->mega_buffer ) {
467 printk(KERN_WARNING "megaraid: out of RAM.\n");
468 goto fail_attach;
469 }
470 alloc_int_buf_f = 1;
471
472 adapter->scb_list = kmalloc(sizeof(scb_t)*MAX_COMMANDS,
473 GFP_KERNEL);
474
475 if(!adapter->scb_list) {
476 printk(KERN_WARNING "megaraid: out of RAM.\n");
477 goto fail_attach;
478 }
479
480 alloc_scb_f = 1;
481
482 /*
483 * Allocate memory for ioctls
484 */
485 adapter->int_pthru = pci_alloc_consistent (
486 adapter->dev,
487 sizeof(mega_passthru),
488 &adapter->int_pthru_dma_hndl );
489
490 if( adapter->int_pthru == NULL ) {
491 printk(KERN_WARNING "megaraid: out of RAM.\n");
492 goto fail_attach;
493 }
494 else
495 did_int_pthru_f = 1;
496
497 adapter->int_data = pci_alloc_consistent (
498 adapter->dev,
499 INT_MEMBLK_SZ,
500 &adapter->int_data_dma_hndl );
501
502 if( adapter->int_data == NULL ) {
503 printk(KERN_WARNING "megaraid: out of RAM.\n");
504 goto fail_attach;
505 }
506 else
507 did_int_data_f = 1;
508
509 /* Request our IRQ */
510 if( adapter->flag & BOARD_MEMMAP ) {
511 if(request_irq(irq, megaraid_isr_memmapped, SA_SHIRQ,
512 "megaraid", adapter)) {
513 printk(KERN_WARNING
514 "megaraid: Couldn't register IRQ %d!\n",
515 irq);
516 goto fail_attach;
517 }
518 }
519 else {
520 if(request_irq(irq, megaraid_isr_iomapped, SA_SHIRQ,
521 "megaraid", adapter)) {
522 printk(KERN_WARNING
523 "megaraid: Couldn't register IRQ %d!\n",
524 irq);
525 goto fail_attach;
526 }
527 }
528 got_irq_f = 1;
529
530 if( mega_setup_mailbox(adapter) != 0 )
531 goto fail_attach;
532
533 did_setup_mbox_f = 1;
534
535 if( mega_query_adapter(adapter) != 0 )
536 goto fail_attach;
537
538 /*
539 * Have checks for some buggy f/w
540 */
541 if((subsysid == 0x1111) && (subsysvid == 0x1111)) {
542 /*
543 * Which firmware
544 */
545 if (!strcmp(adapter->fw_version, "3.00") ||
546 !strcmp(adapter->fw_version, "3.01")) {
547
548 printk( KERN_WARNING
549 "megaraid: Your card is a Dell PERC "
550 "2/SC RAID controller with "
551 "firmware\nmegaraid: 3.00 or 3.01. "
552 "This driver is known to have "
553 "corruption issues\nmegaraid: with "
554 "those firmware versions on this "
555 "specific card. In order\nmegaraid: "
556 "to protect your data, please upgrade "
557 "your firmware to version\nmegaraid: "
558 "3.10 or later, available from the "
559 "Dell Technical Support web\n"
560 "megaraid: site at\nhttp://support."
561 "dell.com/us/en/filelib/download/"
562 "index.asp?fileid=2940\n"
563 );
564 }
565 }
566
567 /*
568 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
569 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
570 * support, since this firmware cannot handle 64 bit
571 * addressing
572 */
573
574 if((subsysvid == HP_SUBSYS_VID) &&
575 ((subsysid == 0x60E7)||(subsysid == 0x60E8))) {
576
577 /*
578 * which firmware
579 */
580 if( !strcmp(adapter->fw_version, "H01.07") ||
581 !strcmp(adapter->fw_version, "H01.08") ||
582 !strcmp(adapter->fw_version, "H01.09") ) {
583
584 printk(KERN_WARNING
585 "megaraid: Firmware H.01.07, "
586 "H.01.08, and H.01.09 on 1M/2M "
587 "controllers\n"
588 "megaraid: do not support 64 bit "
589 "addressing.\nmegaraid: DISABLING "
590 "64 bit support.\n");
591 adapter->flag &= ~BOARD_64BIT;
592 }
593 }
594
595
596 if(mega_is_bios_enabled(adapter)) {
597 mega_hbas[hba_count].is_bios_enabled = 1;
598 }
599 mega_hbas[hba_count].hostdata_addr = adapter;
600
601 /*
602 * Find out which channel is raid and which is scsi. This is
603 * for ROMB support.
604 */
605 mega_enum_raid_scsi(adapter);
606
607 /*
608 * Find out if a logical drive is set as the boot drive. If
609 * there is one, will make that as the first logical drive.
610 * ROMB: Do we have to boot from a physical drive. Then all
611 * the physical drives would appear before the logical disks.
612 * Else, all the physical drives would be exported to the mid
613 * layer after logical drives.
614 */
615 mega_get_boot_drv(adapter);
616
617 if( ! adapter->boot_pdrv_enabled ) {
618 for( i = 0; i < NVIRT_CHAN; i++ )
619 adapter->logdrv_chan[i] = 1;
620
621 for( i = NVIRT_CHAN; i<MAX_CHANNELS+NVIRT_CHAN; i++ )
622 adapter->logdrv_chan[i] = 0;
623
624 adapter->mega_ch_class <<= NVIRT_CHAN;
625 }
626 else {
627 j = adapter->product_info.nchannels;
628 for( i = 0; i < j; i++ )
629 adapter->logdrv_chan[i] = 0;
630
631 for( i = j; i < NVIRT_CHAN + j; i++ )
632 adapter->logdrv_chan[i] = 1;
633 }
634
635
636 /*
637 * Do we support random deletion and addition of logical
638 * drives
639 */
640 adapter->read_ldidmap = 0; /* set it after first logdrv
641 delete cmd */
642 adapter->support_random_del = mega_support_random_del(adapter);
643
644 /* Initialize SCBs */
645 if(mega_init_scb(adapter)) {
646 goto fail_attach;
647 }
648
649 /*
650 * Reset the pending commands counter
651 */
652 atomic_set(&adapter->pend_cmds, 0);
653
654 /*
655 * Reset the adapter quiescent flag
656 */
657 atomic_set(&adapter->quiescent, 0);
658
659 hba_soft_state[hba_count] = adapter;
660
661 /*
662 * Fill in the structure which needs to be passed back to the
663 * application when it does an ioctl() for controller related
664 * information.
665 */
666 i = hba_count;
667
668 mcontroller[i].base = mega_baseport;
669 mcontroller[i].irq = irq;
670 mcontroller[i].numldrv = adapter->numldrv;
671 mcontroller[i].pcibus = pci_bus;
672 mcontroller[i].pcidev = pci_device;
673 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
674 mcontroller[i].pciid = -1;
675 mcontroller[i].pcivendor = pci_vendor;
676 mcontroller[i].pcislot = PCI_SLOT (pci_dev_func);
677 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
678
679
680 /* Set the Mode of addressing to 64 bit if we can */
681 if((adapter->flag & BOARD_64BIT)&&(sizeof(dma_addr_t) == 8)) {
682 if (pci_set_dma_mask(pdev, 0xffffffffffffffffULL) == 0)
683 adapter->has_64bit_addr = 1;
684 }
685 if (!adapter->has_64bit_addr) {
686 if (pci_set_dma_mask(pdev, 0xffffffffULL) != 0) {
687 printk("megaraid%d: DMA not available.\n",
688 host->host_no);
689 goto fail_attach;
690 }
691 }
692
693 init_MUTEX(&adapter->int_mtx);
694 init_waitqueue_head(&adapter->int_waitq);
695
696 adapter->this_id = DEFAULT_INITIATOR_ID;
697 adapter->host->this_id = DEFAULT_INITIATOR_ID;
698
699 #if MEGA_HAVE_CLUSTERING
700 /*
701 * Is cluster support enabled on this controller
702 * Note: In a cluster the HBAs ( the initiators ) will have
703 * different target IDs and we cannot assume it to be 7. Call
704 * to mega_support_cluster() will get the target ids also if
705 * the cluster support is available
706 */
707 adapter->has_cluster = mega_support_cluster(adapter);
708
709 if( adapter->has_cluster ) {
710 printk(KERN_NOTICE
711 "megaraid: Cluster driver, initiator id:%d\n",
712 adapter->this_id);
713 }
714 #endif
715
716 hba_count++;
717 continue;
718
719 fail_attach:
720 if( did_int_data_f ) {
721 pci_free_consistent(
722 adapter->dev, INT_MEMBLK_SZ, adapter->int_data,
723 adapter->int_data_dma_hndl );
724 }
725
726 if( did_int_pthru_f ) {
727 pci_free_consistent(
728 adapter->dev, sizeof(mega_passthru),
729 (void*) adapter->int_pthru,
730 adapter->int_pthru_dma_hndl );
731 }
732
733 if( did_setup_mbox_f ) {
734 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
735 (void *)adapter->una_mbox64,
736 adapter->una_mbox64_dma);
737 }
738
739 if( got_irq_f ) {
740 irq_disable(adapter);
741 free_irq(adapter->host->irq, adapter);
742 }
743
744 if( alloc_scb_f ) {
745 kfree(adapter->scb_list);
746 }
747
748 if( alloc_int_buf_f ) {
749 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
750 (void *)adapter->mega_buffer,
751 adapter->buf_dma_handle);
752 }
753
754 if( did_scsi_reg_f ) scsi_unregister(host);
755
756 if( did_ioremap_f ) {
757 iounmap((void *)mega_baseport);
758 release_mem_region(tbase, 128);
759 }
760
761 if( did_req_region_f )
762 release_region(mega_baseport, 16);
763 }
764
765 return;
766 }
767
768
769 /**
770 * mega_setup_mailbox()
771 * @adapter - pointer to our soft state
772 *
773 * Allocates a 8 byte aligned memory for the handshake mailbox.
774 */
775 static int
mega_setup_mailbox(adapter_t * adapter)776 mega_setup_mailbox(adapter_t *adapter)
777 {
778 unsigned long align;
779
780 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
781 sizeof(mbox64_t), &adapter->una_mbox64_dma);
782
783 if( !adapter->una_mbox64 ) return -1;
784
785 adapter->mbox = &adapter->una_mbox64->mbox;
786
787 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
788 (~0UL ^ 0xFUL));
789
790 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
791
792 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
793
794 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
795
796 /*
797 * Register the mailbox if the controller is an io-mapped controller
798 */
799 if( adapter->flag & BOARD_IOMAP ) {
800
801 outb_p(adapter->mbox_dma & 0xFF,
802 adapter->host->io_port + MBOX_PORT0);
803
804 outb_p((adapter->mbox_dma >> 8) & 0xFF,
805 adapter->host->io_port + MBOX_PORT1);
806
807 outb_p((adapter->mbox_dma >> 16) & 0xFF,
808 adapter->host->io_port + MBOX_PORT2);
809
810 outb_p((adapter->mbox_dma >> 24) & 0xFF,
811 adapter->host->io_port + MBOX_PORT3);
812
813 outb_p(ENABLE_MBOX_BYTE,
814 adapter->host->io_port + ENABLE_MBOX_REGION);
815
816 irq_ack(adapter);
817
818 irq_enable(adapter);
819 }
820
821 return 0;
822 }
823
824
825 /**
826 * issue_scb()
827 * @adapter - pointer to our soft state
828 * @scb - scsi control block
829 *
830 * Post a command to the card if the mailbox is available, otherwise return
831 * busy. We also take the scb from the pending list if the mailbox is
832 * available.
833 */
834 static inline int
issue_scb(adapter_t * adapter,scb_t * scb)835 issue_scb(adapter_t *adapter, scb_t *scb)
836 {
837 volatile mbox64_t *mbox64 = adapter->mbox64;
838 volatile mbox_t *mbox = adapter->mbox;
839 unsigned int i = 0;
840
841 if(unlikely(mbox->busy)) {
842 do {
843 udelay(1);
844 i++;
845 } while( mbox->busy && (i < max_mbox_busy_wait) );
846
847 if(mbox->busy) return -1;
848 }
849
850 /* Copy mailbox data into host structure */
851 memcpy((char *)mbox, (char *)scb->raw_mbox, 16);
852
853 mbox->cmdid = scb->idx; /* Set cmdid */
854 mbox->busy = 1; /* Set busy */
855
856
857 /*
858 * Increment the pending queue counter
859 */
860 atomic_inc(&adapter->pend_cmds);
861
862 switch (mbox->cmd) {
863 case MEGA_MBOXCMD_EXTPTHRU:
864 if( !adapter->has_64bit_addr ) break;
865 // else fall through
866 case MEGA_MBOXCMD_LREAD64:
867 case MEGA_MBOXCMD_LWRITE64:
868 case MEGA_MBOXCMD_PASSTHRU64:
869 mbox64->xfer_segment_lo = mbox->xferaddr;
870 mbox64->xfer_segment_hi = 0;
871 mbox->xferaddr = 0xFFFFFFFF;
872 break;
873 default:
874 mbox64->xfer_segment_lo = 0;
875 mbox64->xfer_segment_hi = 0;
876 }
877
878 /*
879 * post the command
880 */
881 scb->state |= SCB_ISSUED;
882
883 if( likely(adapter->flag & BOARD_MEMMAP) ) {
884 mbox->poll = 0;
885 mbox->ack = 0;
886 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
887 }
888 else {
889 irq_enable(adapter);
890 issue_command(adapter);
891 }
892
893 return 0;
894 }
895
896
897 /*
898 * mega_query_adapter()
899 * @adapter - pointer to our soft state
900 *
901 * Issue the adapter inquiry commands to the controller and find out
902 * information and parameter about the devices attached
903 */
904 static int
mega_query_adapter(adapter_t * adapter)905 mega_query_adapter(adapter_t *adapter)
906 {
907 dma_addr_t prod_info_dma_handle;
908 mega_inquiry3 *inquiry3;
909 u8 raw_mbox[sizeof(mbox_t)];
910 mbox_t *mbox;
911 int retval;
912
913 /* Initialize adapter inquiry mailbox */
914
915 mbox = (mbox_t *)raw_mbox;
916
917 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
918 memset(raw_mbox, 0, sizeof(raw_mbox));
919
920 /*
921 * Try to issue Inquiry3 command
922 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
923 * update enquiry3 structure
924 */
925 mbox->xferaddr = (u32)adapter->buf_dma_handle;
926
927 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
928
929 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
930 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
931 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
932
933 /* Issue a blocking command to the card */
934 if ((retval = issue_scb_block(adapter, raw_mbox))) {
935 /* the adapter does not support 40ld */
936
937 mraid_ext_inquiry *ext_inq;
938 mraid_inquiry *inq;
939 dma_addr_t dma_handle;
940
941 ext_inq = pci_alloc_consistent(adapter->dev,
942 sizeof(mraid_ext_inquiry), &dma_handle);
943
944 if( ext_inq == NULL ) return -1;
945
946 inq = &ext_inq->raid_inq;
947
948 mbox->xferaddr = (u32)dma_handle;
949
950 /*issue old 0x04 command to adapter */
951 mbox->cmd = MEGA_MBOXCMD_ADPEXTINQ;
952
953 issue_scb_block(adapter, raw_mbox);
954
955 /*
956 * update Enquiry3 and ProductInfo structures with
957 * mraid_inquiry structure
958 */
959 mega_8_to_40ld(inq, inquiry3,
960 (mega_product_info *)&adapter->product_info);
961
962 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
963 ext_inq, dma_handle);
964
965 } else { /*adapter supports 40ld */
966 adapter->flag |= BOARD_40LD;
967
968 /*
969 * get product_info, which is static information and will be
970 * unchanged
971 */
972 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
973 &adapter->product_info,
974 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
975
976 mbox->xferaddr = prod_info_dma_handle;
977
978 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
979 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
980
981 if ((retval = issue_scb_block(adapter, raw_mbox)))
982 printk(KERN_WARNING
983 "megaraid: Product_info cmd failed with error: %d\n",
984 retval);
985
986 pci_dma_sync_single(adapter->dev, prod_info_dma_handle,
987 sizeof(mega_product_info),
988 PCI_DMA_FROMDEVICE);
989
990 pci_unmap_single(adapter->dev, prod_info_dma_handle,
991 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
992 }
993
994
995 /*
996 * kernel scans the channels from 0 to <= max_channel
997 */
998 adapter->host->max_channel =
999 adapter->product_info.nchannels + NVIRT_CHAN -1;
1000
1001 adapter->host->max_id = 16; /* max targets per channel */
1002
1003 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
1004
1005 adapter->host->cmd_per_lun = max_cmd_per_lun;
1006
1007 adapter->numldrv = inquiry3->num_ldrv;
1008
1009 adapter->max_cmds = adapter->product_info.max_commands;
1010
1011 if(adapter->max_cmds > MAX_COMMANDS)
1012 adapter->max_cmds = MAX_COMMANDS;
1013
1014 adapter->host->can_queue = adapter->max_cmds - 1;
1015
1016 /*
1017 * Get the maximum number of scatter-gather elements supported by this
1018 * firmware
1019 */
1020 mega_get_max_sgl(adapter);
1021
1022 adapter->host->sg_tablesize = adapter->sglen;
1023
1024
1025 /* use HP firmware and bios version encoding */
1026 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
1027 sprintf (adapter->fw_version, "%c%d%d.%d%d",
1028 adapter->product_info.fw_version[2],
1029 adapter->product_info.fw_version[1] >> 8,
1030 adapter->product_info.fw_version[1] & 0x0f,
1031 adapter->product_info.fw_version[0] >> 8,
1032 adapter->product_info.fw_version[0] & 0x0f);
1033 sprintf (adapter->bios_version, "%c%d%d.%d%d",
1034 adapter->product_info.bios_version[2],
1035 adapter->product_info.bios_version[1] >> 8,
1036 adapter->product_info.bios_version[1] & 0x0f,
1037 adapter->product_info.bios_version[0] >> 8,
1038 adapter->product_info.bios_version[0] & 0x0f);
1039 } else {
1040 memcpy(adapter->fw_version,
1041 (char *)adapter->product_info.fw_version, 4);
1042 adapter->fw_version[4] = 0;
1043
1044 memcpy(adapter->bios_version,
1045 (char *)adapter->product_info.bios_version, 4);
1046
1047 adapter->bios_version[4] = 0;
1048 }
1049
1050 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
1051 adapter->fw_version, adapter->bios_version, adapter->numldrv);
1052
1053 /*
1054 * Do we support extended (>10 bytes) cdbs
1055 */
1056 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
1057 if (adapter->support_ext_cdb)
1058 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
1059
1060
1061 return 0;
1062 }
1063
1064
1065 /**
1066 * mega_runpendq()
1067 * @adapter - pointer to our soft state
1068 *
1069 * Runs through the list of pending requests.
1070 */
1071 static inline void
mega_runpendq(adapter_t * adapter)1072 mega_runpendq(adapter_t *adapter)
1073 {
1074 if(!list_empty(&adapter->pending_list))
1075 __mega_runpendq(adapter);
1076 }
1077
1078 static void
__mega_runpendq(adapter_t * adapter)1079 __mega_runpendq(adapter_t *adapter)
1080 {
1081 scb_t *scb;
1082 struct list_head *pos, *next;
1083
1084 /* Issue any pending commands to the card */
1085 list_for_each_safe(pos, next, &adapter->pending_list) {
1086
1087 scb = list_entry(pos, scb_t, list);
1088
1089 if( !(scb->state & SCB_ISSUED) ) {
1090
1091 if( issue_scb(adapter, scb) != 0 )
1092 return;
1093 }
1094 }
1095
1096 return;
1097 }
1098
1099
1100 /**
1101 * mega_allocate_scb()
1102 * @adapter - pointer to our soft state
1103 * @cmd - scsi command from the mid-layer
1104 *
1105 * Allocate a SCB structure. This is the central structure for controller
1106 * commands.
1107 */
1108 static inline scb_t *
mega_allocate_scb(adapter_t * adapter,Scsi_Cmnd * cmd)1109 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
1110 {
1111 struct list_head *head = &adapter->free_list;
1112 scb_t *scb;
1113
1114 /* Unlink command from Free List */
1115 if( !list_empty(head) ) {
1116
1117 scb = list_entry(head->next, scb_t, list);
1118
1119 list_del_init(head->next);
1120
1121 scb->state = SCB_ACTIVE;
1122 scb->cmd = cmd;
1123 scb->dma_type = MEGA_DMA_TYPE_NONE;
1124
1125 return scb;
1126 }
1127
1128 return NULL;
1129 }
1130
1131
1132 /**
1133 * mega_get_ldrv_num()
1134 * @adapter - pointer to our soft state
1135 * @cmd - scsi mid layer command
1136 * @channel - channel on the controller
1137 *
1138 * Calculate the logical drive number based on the information in scsi command
1139 * and the channel number.
1140 */
1141 static inline int
mega_get_ldrv_num(adapter_t * adapter,Scsi_Cmnd * cmd,int channel)1142 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
1143 {
1144 int tgt;
1145 int ldrv_num;
1146
1147 tgt = cmd->target;
1148
1149 if ( tgt > adapter->this_id )
1150 tgt--; /* we do not get inquires for initiator id */
1151
1152 ldrv_num = (channel * 15) + tgt;
1153
1154
1155 /*
1156 * If we have a logical drive with boot enabled, project it first
1157 */
1158 if( adapter->boot_ldrv_enabled ) {
1159 if( ldrv_num == 0 ) {
1160 ldrv_num = adapter->boot_ldrv;
1161 }
1162 else {
1163 if( ldrv_num <= adapter->boot_ldrv ) {
1164 ldrv_num--;
1165 }
1166 }
1167 }
1168
1169 /*
1170 * If "delete logical drive" feature is enabled on this controller,
1171 * the value returned should be 0x80+logical drive id.
1172 */
1173 if (adapter->support_random_del)
1174 ldrv_num += 0x80;
1175
1176 return ldrv_num;
1177 }
1178
1179
1180 /*
1181 * megaraid_queue()
1182 * @scmd - Issue this scsi command
1183 * @done - the callback hook into the scsi mid-layer
1184 *
1185 * The command queuing entry point for the mid-layer.
1186 */
1187 static int
megaraid_queue(Scsi_Cmnd * scmd,void (* done)(Scsi_Cmnd *))1188 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
1189 {
1190 adapter_t *adapter;
1191 scb_t *scb;
1192 int busy=0;
1193
1194 adapter = (adapter_t *)scmd->host->hostdata;
1195
1196 scmd->scsi_done = done;
1197
1198
1199 /*
1200 * Allocate and build a SCB request
1201 * busy flag will be set if mega_build_cmd() command could not
1202 * allocate scb. We will return non-zero status in that case.
1203 * NOTE: scb can be null even though certain commands completed
1204 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
1205 * return 0 in that case.
1206 */
1207
1208 scb = mega_build_cmd(adapter, scmd, &busy);
1209
1210 if(scb) {
1211 scb->state |= SCB_PENDQ;
1212 list_add_tail(&scb->list, &adapter->pending_list);
1213
1214 /*
1215 * Check if the HBA is in quiescent state, e.g., during a
1216 * delete logical drive opertion. If it is, don't run
1217 * the pending_list.
1218 */
1219 if(atomic_read(&adapter->quiescent) == 0) {
1220 mega_runpendq(adapter);
1221 }
1222 return 0;
1223 }
1224
1225 return busy;
1226 }
1227
1228
1229 /**
1230 * mega_build_cmd()
1231 * @adapter - pointer to our soft state
1232 * @cmd - Prepare using this scsi command
1233 * @busy - busy flag if no resources
1234 *
1235 * Prepares a command and scatter gather list for the controller. This routine
1236 * also finds out if the commands is intended for a logical drive or a
1237 * physical device and prepares the controller command accordingly.
1238 *
1239 * We also re-order the logical drives and physical devices based on their
1240 * boot settings.
1241 */
1242 static scb_t *
mega_build_cmd(adapter_t * adapter,Scsi_Cmnd * cmd,int * busy)1243 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
1244 {
1245 mega_ext_passthru *epthru;
1246 mega_passthru *pthru;
1247 scb_t *scb;
1248 mbox_t *mbox;
1249 long seg;
1250 char islogical;
1251 int channel = 0;
1252 int target = 0;
1253 int ldrv_num = 0; /* logical drive number */
1254
1255
1256 /*
1257 * filter the internal and ioctl commands
1258 */
1259 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
1260 return cmd->buffer;
1261 }
1262
1263
1264 /*
1265 * We know what channels our logical drives are on - mega_find_card()
1266 */
1267 islogical = adapter->logdrv_chan[cmd->channel];
1268
1269 /*
1270 * The theory: If physical drive is chosen for boot, all the physical
1271 * devices are exported before the logical drives, otherwise physical
1272 * devices are pushed after logical drives, in which case - Kernel sees
1273 * the physical devices on virtual channel which is obviously converted
1274 * to actual channel on the HBA.
1275 */
1276 if( adapter->boot_pdrv_enabled ) {
1277 if( islogical ) {
1278 /* logical channel */
1279 channel = cmd->channel -
1280 adapter->product_info.nchannels;
1281 }
1282 else {
1283 channel = cmd->channel; /* this is physical channel */
1284 target = cmd->target;
1285
1286 /*
1287 * boot from a physical disk, that disk needs to be
1288 * exposed first IF both the channels are SCSI, then
1289 * booting from the second channel is not allowed.
1290 */
1291 if( target == 0 ) {
1292 target = adapter->boot_pdrv_tgt;
1293 }
1294 else if( target == adapter->boot_pdrv_tgt ) {
1295 target = 0;
1296 }
1297 }
1298 }
1299 else {
1300 if( islogical ) {
1301 channel = cmd->channel; /* this is the logical channel
1302 */
1303 }
1304 else {
1305 channel = cmd->channel - NVIRT_CHAN; /* physical
1306 channel */
1307 target = cmd->target;
1308 }
1309 }
1310
1311
1312 if(islogical) {
1313
1314 /* have just LUN 0 for each target on virtual channels */
1315 if (cmd->lun) {
1316 cmd->result = (DID_BAD_TARGET << 16);
1317 cmd->scsi_done(cmd);
1318 return NULL;
1319 }
1320
1321 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
1322 }
1323 else {
1324 if( cmd->lun > 7) {
1325 /*
1326 * Do not support lun >7 for physically accessed
1327 * devices
1328 */
1329 cmd->result = (DID_BAD_TARGET << 16);
1330 cmd->scsi_done(cmd);
1331 return NULL;
1332 }
1333 }
1334
1335 /*
1336 *
1337 * Logical drive commands
1338 *
1339 */
1340 if(islogical) {
1341 switch (cmd->cmnd[0]) {
1342 case TEST_UNIT_READY:
1343 memset(cmd->request_buffer, 0, cmd->request_bufflen);
1344
1345 #if MEGA_HAVE_CLUSTERING
1346 /*
1347 * Do we support clustering and is the support enabled
1348 * If no, return success always
1349 */
1350 if( !adapter->has_cluster ) {
1351 cmd->result = (DID_OK << 16);
1352 cmd->scsi_done(cmd);
1353 return NULL;
1354 }
1355
1356 if(!(scb = mega_allocate_scb(adapter, cmd))) {
1357
1358 cmd->result = (DID_ERROR << 16);
1359 cmd->scsi_done(cmd);
1360 *busy = 1;
1361
1362 return NULL;
1363 }
1364
1365 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
1366 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
1367 scb->raw_mbox[3] = ldrv_num;
1368
1369 scb->dma_direction = PCI_DMA_NONE;
1370
1371 return scb;
1372 #else
1373 cmd->result = (DID_OK << 16);
1374 cmd->scsi_done(cmd);
1375 return NULL;
1376 #endif
1377
1378 case MODE_SENSE:
1379 memset(cmd->request_buffer, 0, cmd->cmnd[4]);
1380 cmd->result = (DID_OK << 16);
1381 cmd->scsi_done(cmd);
1382 return NULL;
1383
1384 case READ_CAPACITY:
1385 case INQUIRY:
1386
1387 if(!(adapter->flag & (1L << cmd->channel))) {
1388
1389 printk(KERN_NOTICE
1390 "scsi%d: scanning scsi channel %d ",
1391 adapter->host->host_no,
1392 cmd->channel);
1393 printk("for logical drives.\n");
1394
1395 adapter->flag |= (1L << cmd->channel);
1396 }
1397
1398 /* Allocate a SCB and initialize passthru */
1399 if(!(scb = mega_allocate_scb(adapter, cmd))) {
1400
1401 cmd->result = (DID_ERROR << 16);
1402 cmd->scsi_done(cmd);
1403 *busy = 1;
1404
1405 return NULL;
1406 }
1407 pthru = scb->pthru;
1408
1409 mbox = (mbox_t *)scb->raw_mbox;
1410 memset(mbox, 0, sizeof(scb->raw_mbox));
1411 memset(pthru, 0, sizeof(mega_passthru));
1412
1413 pthru->timeout = 0;
1414 pthru->ars = 1;
1415 pthru->reqsenselen = 14;
1416 pthru->islogical = 1;
1417 pthru->logdrv = ldrv_num;
1418 pthru->cdblen = cmd->cmd_len;
1419 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
1420
1421 if( adapter->has_64bit_addr ) {
1422 mbox->cmd = MEGA_MBOXCMD_PASSTHRU64;
1423 }
1424 else {
1425 mbox->cmd = MEGA_MBOXCMD_PASSTHRU;
1426 }
1427
1428 scb->dma_direction = PCI_DMA_FROMDEVICE;
1429
1430 pthru->numsgelements = mega_build_sglist(adapter, scb,
1431 &pthru->dataxferaddr, &pthru->dataxferlen);
1432
1433 mbox->xferaddr = scb->pthru_dma_addr;
1434
1435 return scb;
1436
1437 case READ_6:
1438 case WRITE_6:
1439 case READ_10:
1440 case WRITE_10:
1441 case READ_12:
1442 case WRITE_12:
1443
1444 /* Allocate a SCB and initialize mailbox */
1445 if(!(scb = mega_allocate_scb(adapter, cmd))) {
1446
1447 cmd->result = (DID_ERROR << 16);
1448 cmd->scsi_done(cmd);
1449 *busy = 1;
1450
1451 return NULL;
1452 }
1453 mbox = (mbox_t *)scb->raw_mbox;
1454
1455 memset(mbox, 0, sizeof(scb->raw_mbox));
1456 mbox->logdrv = ldrv_num;
1457
1458 /*
1459 * A little hack: 2nd bit is zero for all scsi read
1460 * commands and is set for all scsi write commands
1461 */
1462 if( adapter->has_64bit_addr ) {
1463 mbox->cmd = (*cmd->cmnd & 0x02) ?
1464 MEGA_MBOXCMD_LWRITE64:
1465 MEGA_MBOXCMD_LREAD64 ;
1466 }
1467 else {
1468 mbox->cmd = (*cmd->cmnd & 0x02) ?
1469 MEGA_MBOXCMD_LWRITE:
1470 MEGA_MBOXCMD_LREAD ;
1471 }
1472
1473 /*
1474 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1475 */
1476 if( cmd->cmd_len == 6 ) {
1477 mbox->numsectors = (u32) cmd->cmnd[4];
1478 mbox->lba =
1479 ((u32)cmd->cmnd[1] << 16) |
1480 ((u32)cmd->cmnd[2] << 8) |
1481 (u32)cmd->cmnd[3];
1482
1483 mbox->lba &= 0x1FFFFF;
1484
1485 #if MEGA_HAVE_STATS
1486 /*
1487 * Take modulo 0x80, since the logical drive
1488 * number increases by 0x80 when a logical
1489 * drive was deleted
1490 */
1491 if (*cmd->cmnd == READ_6) {
1492 adapter->nreads[ldrv_num%0x80]++;
1493 adapter->nreadblocks[ldrv_num%0x80] +=
1494 mbox->numsectors;
1495 } else {
1496 adapter->nwrites[ldrv_num%0x80]++;
1497 adapter->nwriteblocks[ldrv_num%0x80] +=
1498 mbox->numsectors;
1499 }
1500 #endif
1501 }
1502
1503 /*
1504 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1505 */
1506 if( cmd->cmd_len == 10 ) {
1507 mbox->numsectors =
1508 (u32)cmd->cmnd[8] |
1509 ((u32)cmd->cmnd[7] << 8);
1510 mbox->lba =
1511 ((u32)cmd->cmnd[2] << 24) |
1512 ((u32)cmd->cmnd[3] << 16) |
1513 ((u32)cmd->cmnd[4] << 8) |
1514 (u32)cmd->cmnd[5];
1515
1516 #if MEGA_HAVE_STATS
1517 if (*cmd->cmnd == READ_10) {
1518 adapter->nreads[ldrv_num%0x80]++;
1519 adapter->nreadblocks[ldrv_num%0x80] +=
1520 mbox->numsectors;
1521 } else {
1522 adapter->nwrites[ldrv_num%0x80]++;
1523 adapter->nwriteblocks[ldrv_num%0x80] +=
1524 mbox->numsectors;
1525 }
1526 #endif
1527 }
1528
1529 /*
1530 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1531 */
1532 if( cmd->cmd_len == 12 ) {
1533 mbox->lba =
1534 ((u32)cmd->cmnd[2] << 24) |
1535 ((u32)cmd->cmnd[3] << 16) |
1536 ((u32)cmd->cmnd[4] << 8) |
1537 (u32)cmd->cmnd[5];
1538
1539 mbox->numsectors =
1540 ((u32)cmd->cmnd[6] << 24) |
1541 ((u32)cmd->cmnd[7] << 16) |
1542 ((u32)cmd->cmnd[8] << 8) |
1543 (u32)cmd->cmnd[9];
1544
1545 #if MEGA_HAVE_STATS
1546 if (*cmd->cmnd == READ_12) {
1547 adapter->nreads[ldrv_num%0x80]++;
1548 adapter->nreadblocks[ldrv_num%0x80] +=
1549 mbox->numsectors;
1550 } else {
1551 adapter->nwrites[ldrv_num%0x80]++;
1552 adapter->nwriteblocks[ldrv_num%0x80] +=
1553 mbox->numsectors;
1554 }
1555 #endif
1556 }
1557
1558 /*
1559 * If it is a read command
1560 */
1561 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
1562 scb->dma_direction = PCI_DMA_FROMDEVICE;
1563 }
1564 else {
1565 scb->dma_direction = PCI_DMA_TODEVICE;
1566 }
1567
1568 /* Calculate Scatter-Gather info */
1569 mbox->numsgelements = mega_build_sglist(adapter, scb,
1570 (u32 *)&mbox->xferaddr, (u32 *)&seg);
1571
1572 return scb;
1573
1574 #if MEGA_HAVE_CLUSTERING
1575 case RESERVE: /* Fall through */
1576 case RELEASE:
1577
1578 /*
1579 * Do we support clustering and is the support enabled
1580 */
1581 if( ! adapter->has_cluster ) {
1582
1583 cmd->result = (DID_BAD_TARGET << 16);
1584 cmd->scsi_done(cmd);
1585 return NULL;
1586 }
1587
1588 /* Allocate a SCB and initialize mailbox */
1589 if(!(scb = mega_allocate_scb(adapter, cmd))) {
1590
1591 cmd->result = (DID_ERROR << 16);
1592 cmd->scsi_done(cmd);
1593 *busy = 1;
1594
1595 return NULL;
1596 }
1597
1598 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
1599 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
1600 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
1601
1602 scb->raw_mbox[3] = ldrv_num;
1603
1604 scb->dma_direction = PCI_DMA_NONE;
1605
1606 return scb;
1607 #endif
1608
1609 default:
1610 cmd->result = (DID_BAD_TARGET << 16);
1611 cmd->scsi_done(cmd);
1612 return NULL;
1613 }
1614 }
1615
1616 /*
1617 * Passthru drive commands
1618 */
1619 else {
1620 /* Allocate a SCB and initialize passthru */
1621 if(!(scb = mega_allocate_scb(adapter, cmd))) {
1622
1623 cmd->result = (DID_ERROR << 16);
1624 cmd->scsi_done(cmd);
1625 *busy = 1;
1626
1627 return NULL;
1628 }
1629
1630 mbox = (mbox_t *)scb->raw_mbox;
1631 memset(mbox, 0, sizeof(scb->raw_mbox));
1632
1633 if( adapter->support_ext_cdb ) {
1634
1635 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
1636 channel, target);
1637
1638 mbox->cmd = MEGA_MBOXCMD_EXTPTHRU;
1639
1640 mbox->xferaddr = scb->epthru_dma_addr;
1641
1642 }
1643 else {
1644
1645 pthru = mega_prepare_passthru(adapter, scb, cmd,
1646 channel, target);
1647
1648 /* Initialize mailbox */
1649 if( adapter->has_64bit_addr ) {
1650 mbox->cmd = MEGA_MBOXCMD_PASSTHRU64;
1651 }
1652 else {
1653 mbox->cmd = MEGA_MBOXCMD_PASSTHRU;
1654 }
1655
1656 mbox->xferaddr = scb->pthru_dma_addr;
1657
1658 }
1659 return scb;
1660 }
1661 return NULL;
1662 }
1663
1664
1665 /**
1666 * mega_prepare_passthru()
1667 * @adapter - pointer to our soft state
1668 * @scb - our scsi control block
1669 * @cmd - scsi command from the mid-layer
1670 * @channel - actual channel on the controller
1671 * @target - actual id on the controller.
1672 *
1673 * prepare a command for the scsi physical devices.
1674 */
1675 static mega_passthru *
mega_prepare_passthru(adapter_t * adapter,scb_t * scb,Scsi_Cmnd * cmd,int channel,int target)1676 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1677 int channel, int target)
1678 {
1679 mega_passthru *pthru;
1680
1681 pthru = scb->pthru;
1682 memset(pthru, 0, sizeof (mega_passthru));
1683
1684 /* 0=6sec/1=60sec/2=10min/3=3hrs/4=NO timeout */
1685 pthru->timeout = 4;
1686
1687 pthru->ars = 1;
1688 pthru->reqsenselen = 14;
1689 pthru->islogical = 0;
1690
1691 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1692
1693 pthru->target = (adapter->flag & BOARD_40LD) ?
1694 (channel << 4) | target : target;
1695
1696 pthru->cdblen = cmd->cmd_len;
1697 pthru->logdrv = cmd->lun;
1698
1699 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
1700
1701 /* Not sure about the direction */
1702 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1703
1704 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
1705 switch (cmd->cmnd[0]) {
1706 case INQUIRY:
1707 case READ_CAPACITY:
1708 if(!(adapter->flag & (1L << cmd->channel))) {
1709
1710 printk(KERN_NOTICE
1711 "scsi%d: scanning scsi channel %d [P%d] ",
1712 adapter->host->host_no,
1713 cmd->channel, channel);
1714 printk("for physical devices.\n");
1715
1716 adapter->flag |= (1L << cmd->channel);
1717 }
1718 /* Fall through */
1719 default:
1720 pthru->numsgelements = mega_build_sglist(adapter, scb,
1721 &pthru->dataxferaddr, &pthru->dataxferlen);
1722 break;
1723 }
1724 return pthru;
1725 }
1726
1727
1728 /**
1729 * mega_prepare_extpassthru()
1730 * @adapter - pointer to our soft state
1731 * @scb - our scsi control block
1732 * @cmd - scsi command from the mid-layer
1733 * @channel - actual channel on the controller
1734 * @target - actual id on the controller.
1735 *
1736 * prepare a command for the scsi physical devices. This rountine prepares
1737 * commands for devices which can take extended CDBs (>10 bytes)
1738 */
1739 static mega_ext_passthru *
mega_prepare_extpassthru(adapter_t * adapter,scb_t * scb,Scsi_Cmnd * cmd,int channel,int target)1740 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1741 int channel, int target)
1742 {
1743 mega_ext_passthru *epthru;
1744
1745 epthru = scb->epthru;
1746 memset(epthru, 0, sizeof(mega_ext_passthru));
1747
1748 /* 0=6sec/1=60sec/2=10min/3=3hrs/4=NO timeout */
1749 epthru->timeout = 4;
1750
1751 epthru->ars = 1;
1752 epthru->reqsenselen = 14;
1753 epthru->islogical = 0;
1754
1755 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1756 epthru->target = (adapter->flag & BOARD_40LD) ?
1757 (channel << 4) | target : target;
1758
1759 epthru->cdblen = cmd->cmd_len;
1760 epthru->logdrv = cmd->lun;
1761
1762 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1763
1764 /* Not sure about the direction */
1765 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1766
1767 switch(cmd->cmnd[0]) {
1768 case INQUIRY:
1769 case READ_CAPACITY:
1770 if(!(adapter->flag & (1L << cmd->channel))) {
1771
1772 printk(KERN_NOTICE
1773 "scsi%d: scanning scsi channel %d [P%d] ",
1774 adapter->host->host_no,
1775 cmd->channel, channel);
1776 printk("for physical devices.\n");
1777
1778 adapter->flag |= (1L << cmd->channel);
1779 }
1780 /* Fall through */
1781 default:
1782 epthru->numsgelements = mega_build_sglist(adapter, scb,
1783 &epthru->dataxferaddr, &epthru->dataxferlen);
1784 break;
1785 }
1786
1787 return epthru;
1788 }
1789
1790
1791 /*
1792 * Wait until the controller's mailbox is available
1793 */
1794 static inline int
mega_busywait_mbox(adapter_t * adapter)1795 mega_busywait_mbox (adapter_t *adapter)
1796 {
1797 if (adapter->mbox->busy)
1798 return __mega_busywait_mbox(adapter);
1799 return 0;
1800 }
1801
1802 static int
__mega_busywait_mbox(adapter_t * adapter)1803 __mega_busywait_mbox (adapter_t *adapter)
1804 {
1805 volatile mbox_t *mbox = adapter->mbox;
1806 long counter;
1807
1808 for (counter = 0; counter < 10000; counter++) {
1809 if (!mbox->busy)
1810 return 0;
1811 udelay(100); yield();
1812 }
1813 return -1; /* give up after 1 second */
1814 }
1815
1816
1817 /**
1818 * issue_scb_block()
1819 * @adapter - pointer to our soft state
1820 * @raw_mbox - the mailbox
1821 *
1822 * Issue a scb in synchronous and non-interrupt mode
1823 */
1824 static int
issue_scb_block(adapter_t * adapter,u_char * raw_mbox)1825 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1826 {
1827 volatile mbox64_t *mbox64 = adapter->mbox64;
1828 volatile mbox_t *mbox = adapter->mbox;
1829 u8 byte;
1830 u8 status;
1831 int i;
1832
1833 /* Wait until mailbox is free */
1834 if(mega_busywait_mbox (adapter))
1835 goto bug_blocked_mailbox;
1836
1837 /* Copy mailbox data into host structure */
1838 memcpy((char *)mbox, raw_mbox, 16);
1839 mbox->cmdid = 0xFE;
1840 mbox->busy = 1;
1841
1842 switch (raw_mbox[0]) {
1843 case MEGA_MBOXCMD_EXTPTHRU:
1844 if( !adapter->has_64bit_addr ) break;
1845 // else fall through
1846 case MEGA_MBOXCMD_LREAD64:
1847 case MEGA_MBOXCMD_LWRITE64:
1848 case MEGA_MBOXCMD_PASSTHRU64:
1849 mbox64->xfer_segment_lo = mbox->xferaddr;
1850 mbox64->xfer_segment_hi = 0;
1851 mbox->xferaddr = 0xFFFFFFFF;
1852 break;
1853 default:
1854 mbox64->xfer_segment_lo = 0;
1855 mbox64->xfer_segment_hi = 0;
1856 }
1857
1858 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1859 mbox->poll = 0;
1860 mbox->ack = 0;
1861 mbox->numstatus = 0xFF;
1862 mbox->status = 0xFF;
1863 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1864
1865 while((volatile u8)mbox->numstatus == 0xFF)
1866 cpu_relax();
1867
1868 mbox->numstatus = 0xFF;
1869
1870 while((volatile u8)mbox->status == 0xFF)
1871 cpu_relax();
1872
1873 status = mbox->status;
1874 mbox->status = 0xFF;
1875
1876 while( (volatile u8)mbox->poll != 0x77 )
1877 cpu_relax();
1878
1879 mbox->poll = 0;
1880 mbox->ack = 0x77;
1881
1882 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1883
1884 while(RDINDOOR(adapter) & 0x2)
1885 cpu_relax();
1886 }
1887 else {
1888 irq_disable(adapter);
1889 issue_command(adapter);
1890
1891 while (!((byte = irq_state(adapter)) & INTR_VALID))
1892 cpu_relax();
1893
1894 status = mbox->status;
1895 mbox->numstatus = 0xFF;
1896 mbox->status = 0xFF;
1897
1898 set_irq_state(adapter, byte);
1899 irq_enable(adapter);
1900 irq_ack(adapter);
1901 }
1902
1903 // invalidate the completed command id array. After command
1904 // completion, firmware would write the valid id.
1905 for (i = 0; i < MAX_FIRMWARE_STATUS; i++) {
1906 mbox->completed[i] = 0xFF;
1907 }
1908
1909 return status;
1910
1911 bug_blocked_mailbox:
1912 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1913 udelay (1000);
1914 return -1;
1915 }
1916
1917
1918 /**
1919 * mega_cmd_done()
1920 * @adapter - pointer to our soft state
1921 * @completed - array of ids of completed commands
1922 * @nstatus - number of completed commands
1923 * @status - status of the last command completed
1924 *
1925 * Complete the comamnds and call the scsi mid-layer callback hooks.
1926 */
1927 static inline void
mega_cmd_done(adapter_t * adapter,u8 completed[],int nstatus,int status)1928 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1929 {
1930 mega_ext_passthru *epthru = NULL;
1931 struct scatterlist *sgl;
1932 Scsi_Cmnd *cmd = NULL;
1933 mega_passthru *pthru = NULL;
1934 mbox_t *mbox = NULL;
1935 int islogical;
1936 u8 c;
1937 scb_t *scb;
1938 int cmdid;
1939 int i;
1940
1941 /*
1942 * for all the commands completed, call the mid-layer callback routine
1943 * and free the scb.
1944 */
1945 for( i = 0; i < nstatus; i++ ) {
1946
1947 cmdid = completed[i];
1948
1949 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1950 scb = &adapter->int_scb;
1951 cmd = scb->cmd;
1952 mbox = (mbox_t *)scb->raw_mbox;
1953
1954 /*
1955 * Internal command interface do not fire the extended
1956 * passthru or 64-bit passthru
1957 */
1958 pthru = scb->pthru;
1959
1960 }
1961 else {
1962 scb = &adapter->scb_list[cmdid];
1963 cmd = scb->cmd;
1964 pthru = scb->pthru;
1965 epthru = scb->epthru;
1966 mbox = (mbox_t *)scb->raw_mbox;
1967
1968 /*
1969 * Make sure f/w has completed a valid command
1970 */
1971 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1972 printk(KERN_CRIT
1973 "megaraid: invalid command ");
1974 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1975 cmdid, scb->state, scb->cmd);
1976
1977 continue;
1978 }
1979
1980 /*
1981 * Was an abort issued for this command
1982 */
1983 if( scb->state & SCB_ABORT ) {
1984
1985 printk(KERN_NOTICE
1986 "megaraid: aborted cmd %lx[%x] complete.\n",
1987 scb->cmd->serial_number, scb->idx);
1988
1989 cmd->result = (DID_ABORT << 16);
1990
1991 mega_free_scb(adapter, scb);
1992
1993 cmd->scsi_done(cmd);
1994
1995 continue;
1996 }
1997
1998 /*
1999 * Was a reset issued for this command
2000 */
2001 if( scb->state & SCB_RESET ) {
2002
2003 printk(KERN_WARNING
2004 "megaraid: reset cmd %lx[%x] complete.\n",
2005 scb->cmd->serial_number, scb->idx);
2006
2007 scb->cmd->result = (DID_RESET << 16);
2008
2009 mega_free_scb (adapter, scb);
2010
2011 cmd->scsi_done(cmd);
2012
2013 continue;
2014 }
2015
2016 #if MEGA_HAVE_STATS
2017 {
2018
2019 int logdrv = mbox->logdrv;
2020
2021 islogical = adapter->logdrv_chan[cmd->channel];
2022
2023 /*
2024 * Maintain an error counter for the logical drive.
2025 * Some application like SNMP agent need such
2026 * statistics
2027 */
2028 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
2029 cmd->cmnd[0] == READ_10 ||
2030 cmd->cmnd[0] == READ_12)) {
2031 /*
2032 * Logical drive number increases by 0x80 when
2033 * a logical drive is deleted
2034 */
2035 adapter->rd_errors[logdrv%0x80]++;
2036 }
2037
2038 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
2039 cmd->cmnd[0] == WRITE_10 ||
2040 cmd->cmnd[0] == WRITE_12)) {
2041 /*
2042 * Logical drive number increases by 0x80 when
2043 * a logical drive is deleted
2044 */
2045 adapter->wr_errors[logdrv%0x80]++;
2046 }
2047
2048 }
2049 #endif
2050 }
2051
2052 /*
2053 * Do not return the presence of hard disk on the channel so,
2054 * inquiry sent, and returned data==hard disk or removable
2055 * hard disk and not logical, request should return failure! -
2056 * PJ
2057 */
2058 islogical = adapter->logdrv_chan[cmd->channel];
2059 if (cmd->cmnd[0] == INQUIRY && !islogical) {
2060
2061 if( cmd->use_sg ) {
2062 sgl = (struct scatterlist *)
2063 cmd->request_buffer;
2064 c = *(u8 *)sgl[0].address;
2065 }
2066 else {
2067 c = *(u8 *)cmd->request_buffer;
2068 }
2069
2070 if(IS_RAID_CH(adapter, cmd->channel) &&
2071 ((c & 0x1F ) == TYPE_DISK)) {
2072 status = 0xF0;
2073 }
2074 }
2075
2076 /* clear result; otherwise, success returns corrupt value */
2077 cmd->result = 0;
2078
2079 /* Convert MegaRAID status to Linux error code */
2080 switch (status) {
2081 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
2082 cmd->result |= (DID_OK << 16);
2083 break;
2084
2085 case 0x02: /* ERROR_ABORTED, i.e.
2086 SCSI_STATUS_CHECK_CONDITION */
2087
2088 /* set sense_buffer and result fields */
2089 if( mbox->cmd == MEGA_MBOXCMD_PASSTHRU ||
2090 mbox->cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
2091
2092 memcpy(cmd->sense_buffer, pthru->reqsensearea,
2093 14);
2094
2095 cmd->result = (DRIVER_SENSE << 24) |
2096 (DID_OK << 16) |
2097 (CHECK_CONDITION << 1);
2098 }
2099 else {
2100 if (mbox->cmd == MEGA_MBOXCMD_EXTPTHRU) {
2101
2102 memcpy(cmd->sense_buffer,
2103 epthru->reqsensearea, 14);
2104
2105 cmd->result = (DRIVER_SENSE << 24) |
2106 (DID_OK << 16) |
2107 (CHECK_CONDITION << 1);
2108 } else {
2109 cmd->sense_buffer[0] = 0x70;
2110 cmd->sense_buffer[2] = ABORTED_COMMAND;
2111 cmd->result |= (CHECK_CONDITION << 1);
2112 }
2113 }
2114 break;
2115
2116 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
2117 SCSI_STATUS_BUSY */
2118 cmd->result |= (DID_BUS_BUSY << 16) | status;
2119 break;
2120
2121 default:
2122 #if MEGA_HAVE_CLUSTERING
2123 /*
2124 * If TEST_UNIT_READY fails, we know
2125 * MEGA_RESERVATION_STATUS failed
2126 */
2127 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
2128 cmd->result |= (DID_ERROR << 16) |
2129 (RESERVATION_CONFLICT << 1);
2130 }
2131 else
2132 /*
2133 * Error code returned is 1 if Reserve or Release
2134 * failed or the input parameter is invalid
2135 */
2136 if( status == 1 &&
2137 (cmd->cmnd[0] == RESERVE ||
2138 cmd->cmnd[0] == RELEASE) ) {
2139
2140 cmd->result |= (DID_ERROR << 16) |
2141 (RESERVATION_CONFLICT << 1);
2142 }
2143 else
2144 #endif
2145 cmd->result |= (DID_BAD_TARGET << 16)|status;
2146 }
2147
2148 /*
2149 * Only free SCBs for the commands coming down from the
2150 * mid-layer, not for which were issued internally
2151 *
2152 * For internal command, restore the status returned by the
2153 * firmware so that user can interpret it.
2154 */
2155 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
2156 cmd->result = status;
2157
2158 /*
2159 * Remove the internal command from the pending list
2160 */
2161 list_del_init(&scb->list);
2162 scb->state = SCB_FREE;
2163 }
2164 else {
2165 mega_free_scb(adapter, scb);
2166 }
2167
2168 /*
2169 * Call the mid-layer callback for this command
2170 */
2171 cmd->scsi_done(cmd);
2172 }
2173 }
2174
2175
2176 /**
2177 * megaraid_iombox_ack_sequence - interrupt ack sequence for IO mapped HBAs
2178 * @adapter - controller's soft state
2179 *
2180 * Interrupt ackrowledgement sequence for IO mapped HBAs
2181 */
2182 static inline void
megaraid_iombox_ack_sequence(adapter_t * adapter)2183 megaraid_iombox_ack_sequence(adapter_t *adapter)
2184 {
2185 u8 status;
2186 int nstatus;
2187 u8 completed[MAX_FIRMWARE_STATUS];
2188 u8 byte;
2189 int i;
2190
2191
2192 /*
2193 * loop till F/W has more commands for us to complete.
2194 */
2195 do {
2196 /* Check if a valid interrupt is pending */
2197 byte = irq_state(adapter);
2198 if( (byte & VALID_INTR_BYTE) == 0 ) {
2199 return;
2200 }
2201 set_irq_state(adapter, byte);
2202
2203 while ((nstatus = adapter->mbox->numstatus) == 0xFF) {
2204 cpu_relax();
2205 }
2206 adapter->mbox->numstatus = 0xFF;
2207
2208 for (i = 0; i < nstatus; i++) {
2209 while ((completed[i] = adapter->mbox->completed[i])
2210 == 0xFF) {
2211 cpu_relax();
2212 }
2213
2214 adapter->mbox->completed[i] = 0xFF;
2215 }
2216
2217 // we must read the valid status now
2218 if ((status = adapter->mbox->status) == 0xFF) {
2219 printk(KERN_WARNING
2220 "megaraid critical: status 0xFF from firmware.\n");
2221 }
2222 adapter->mbox->status = 0xFF;
2223
2224 /*
2225 * decrement the pending queue counter
2226 */
2227 atomic_sub(nstatus, &adapter->pend_cmds);
2228
2229 /* Acknowledge interrupt */
2230 irq_ack(adapter);
2231
2232 mega_cmd_done(adapter, completed, nstatus, status);
2233
2234 } while(1);
2235 }
2236
2237
2238 /**
2239 * megaraid_isr_iomapped()
2240 * @irq - irq
2241 * @devp - pointer to our soft state
2242 * @regs - unused
2243 *
2244 * Interrupt service routine for io-mapped controllers.
2245 * Find out if our device is interrupting. If yes, acknowledge the interrupt
2246 * and service the completed commands.
2247 */
2248 static void
megaraid_isr_iomapped(int irq,void * devp,struct pt_regs * regs)2249 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
2250 {
2251 adapter_t *adapter = devp;
2252 unsigned long flags;
2253
2254 spin_lock_irqsave(adapter->host_lock, flags);
2255
2256 megaraid_iombox_ack_sequence(adapter);
2257
2258 /* Loop through any pending requests */
2259 if( atomic_read(&adapter->quiescent ) == 0) {
2260 mega_runpendq(adapter);
2261 }
2262
2263 spin_unlock_irqrestore(adapter->host_lock, flags);
2264
2265 return;
2266 }
2267
2268
2269 /**
2270 * megaraid_memmbox_ack_sequence - interrupt ack sequence for memory mapped HBAs
2271 * @adapter - controller's soft state
2272 *
2273 * Interrupt ackrowledgement sequence for memory mapped HBAs
2274 */
2275 static inline void
megaraid_memmbox_ack_sequence(adapter_t * adapter)2276 megaraid_memmbox_ack_sequence(adapter_t *adapter)
2277 {
2278 u8 status;
2279 u32 dword = 0;
2280 int nstatus;
2281 u8 completed[MAX_FIRMWARE_STATUS];
2282 int i;
2283
2284
2285 /*
2286 * loop till F/W has more commands for us to complete.
2287 */
2288 do {
2289 /* Check if a valid interrupt is pending */
2290 dword = RDOUTDOOR(adapter);
2291 if( dword != 0x10001234 ) {
2292 /*
2293 * No more pending commands
2294 */
2295 return;
2296 }
2297 WROUTDOOR(adapter, 0x10001234);
2298
2299 while ((nstatus = adapter->mbox->numstatus) == 0xFF) {
2300 cpu_relax();
2301 }
2302 adapter->mbox->numstatus = 0xFF;
2303
2304 for (i = 0; i < nstatus; i++ ) {
2305 while ((completed[i] = adapter->mbox->completed[i])
2306 == 0xFF) {
2307 cpu_relax();
2308 }
2309
2310 adapter->mbox->completed[i] = 0xFF;
2311 }
2312
2313 // we must read the valid status now
2314 if ((status = adapter->mbox->status) == 0xFF) {
2315 printk(KERN_WARNING
2316 "megaraid critical: status 0xFF from firmware.\n");
2317 }
2318 adapter->mbox->status = 0xFF;
2319
2320 /*
2321 * decrement the pending queue counter
2322 */
2323 atomic_sub(nstatus, &adapter->pend_cmds);
2324
2325 /* Acknowledge interrupt */
2326 WRINDOOR(adapter, 0x2);
2327
2328 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
2329
2330 mega_cmd_done(adapter, completed, nstatus, status);
2331
2332 } while(1);
2333 }
2334
2335
2336 /**
2337 * megaraid_isr_memmapped()
2338 * @irq - irq
2339 * @devp - pointer to our soft state
2340 * @regs - unused
2341 *
2342 * Interrupt service routine for memory-mapped controllers.
2343 * Find out if our device is interrupting. If yes, acknowledge the interrupt
2344 * and service the completed commands.
2345 */
2346 static void
megaraid_isr_memmapped(int irq,void * devp,struct pt_regs * regs)2347 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
2348 {
2349 adapter_t *adapter = devp;
2350 unsigned long flags;
2351
2352 spin_lock_irqsave(adapter->host_lock, flags);
2353
2354 megaraid_memmbox_ack_sequence(adapter);
2355
2356 /* Loop through any pending requests */
2357 if(atomic_read(&adapter->quiescent) == 0) {
2358 mega_runpendq(adapter);
2359 }
2360
2361 spin_unlock_irqrestore(adapter->host_lock, flags);
2362
2363 return;
2364 }
2365
2366
2367 /*
2368 * Free a SCB structure
2369 * Note: We assume the scsi commands associated with this scb is not free yet.
2370 */
2371 static void
mega_free_scb(adapter_t * adapter,scb_t * scb)2372 mega_free_scb(adapter_t *adapter, scb_t *scb)
2373 {
2374 switch( scb->dma_type ) {
2375
2376 case MEGA_DMA_TYPE_NONE:
2377 break;
2378
2379 case MEGA_BULK_DATA:
2380 if( scb->dma_direction == PCI_DMA_FROMDEVICE ) {
2381 pci_dma_sync_single(adapter->dev, scb->dma_h_bulkdata,
2382 scb->cmd->request_bufflen,
2383 PCI_DMA_FROMDEVICE);
2384 }
2385
2386 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
2387 scb->cmd->request_bufflen, scb->dma_direction);
2388
2389 break;
2390
2391 case MEGA_SGLIST:
2392 if( scb->dma_direction == PCI_DMA_FROMDEVICE ) {
2393 pci_dma_sync_sg(adapter->dev,
2394 (struct scatterlist *)scb->cmd->request_buffer,
2395 scb->cmd->use_sg, PCI_DMA_FROMDEVICE);
2396 }
2397
2398 pci_unmap_sg(adapter->dev,
2399 (struct scatterlist *)scb->cmd->request_buffer,
2400 scb->cmd->use_sg, scb->dma_direction);
2401
2402 break;
2403
2404 default:
2405 break;
2406 }
2407
2408 /*
2409 * Remove from the pending list
2410 */
2411 list_del_init(&scb->list);
2412
2413 /* Link the scb back into free list */
2414 scb->state = SCB_FREE;
2415 scb->cmd = NULL;
2416
2417 list_add(&scb->list, &adapter->free_list);
2418 }
2419
2420
2421 /*
2422 * Copies data to SGLIST
2423 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
2424 */
2425 static int
mega_build_sglist(adapter_t * adapter,scb_t * scb,u32 * buf,u32 * len)2426 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
2427 {
2428 struct scatterlist *sgl;
2429 struct page *page;
2430 unsigned long offset;
2431 Scsi_Cmnd *cmd;
2432 int sgcnt;
2433 int idx;
2434
2435 cmd = scb->cmd;
2436
2437 // return 0 elements if no data transfer
2438 if (!cmd->request_buffer || !cmd->request_bufflen)
2439 return 0;
2440
2441 /* Scatter-gather not used */
2442 if( !cmd->use_sg ) {
2443
2444 page = virt_to_page(cmd->request_buffer);
2445
2446 offset = ((unsigned long)cmd->request_buffer & ~PAGE_MASK);
2447
2448 scb->dma_h_bulkdata = pci_map_page(adapter->dev, page, offset,
2449 cmd->request_bufflen,
2450 scb->dma_direction);
2451 scb->dma_type = MEGA_BULK_DATA;
2452
2453 /*
2454 * We need to handle special 64-bit commands that need a
2455 * minimum of 1 SG
2456 */
2457 if( adapter->has_64bit_addr ) {
2458 scb->sgl64[0].address = scb->dma_h_bulkdata;
2459 scb->sgl64[0].length = cmd->request_bufflen;
2460 *buf = (u32)scb->sgl_dma_addr;
2461 *len = (u32)cmd->request_bufflen;
2462 return 1;
2463 }
2464 else {
2465 *buf = (u32)scb->dma_h_bulkdata;
2466 *len = (u32)cmd->request_bufflen;
2467 }
2468
2469 if( scb->dma_direction == PCI_DMA_TODEVICE ) {
2470 pci_dma_sync_single(adapter->dev,
2471 scb->dma_h_bulkdata,
2472 cmd->request_bufflen,
2473 PCI_DMA_TODEVICE);
2474 }
2475
2476 return 0;
2477 }
2478
2479 sgl = (struct scatterlist *)cmd->request_buffer;
2480
2481 /*
2482 * Copy Scatter-Gather list info into controller structure.
2483 *
2484 * The number of sg elements returned must not exceed our limit
2485 */
2486 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, scb->dma_direction);
2487
2488 scb->dma_type = MEGA_SGLIST;
2489
2490 if( sgcnt > adapter->sglen ) BUG();
2491
2492 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
2493
2494 if( adapter->has_64bit_addr ) {
2495 scb->sgl64[idx].address = sg_dma_address(sgl);
2496 scb->sgl64[idx].length = sg_dma_len(sgl);
2497 }
2498 else {
2499 scb->sgl[idx].address = sg_dma_address(sgl);
2500 scb->sgl[idx].length = sg_dma_len(sgl);
2501 }
2502 }
2503
2504 /* Reset pointer and length fields */
2505 *buf = scb->sgl_dma_addr;
2506
2507 /*
2508 * For passthru command, dataxferlen must be set, even for commands
2509 * with a sg list
2510 */
2511 *len = (u32)cmd->request_bufflen;
2512
2513 if( scb->dma_direction == PCI_DMA_TODEVICE ) {
2514 pci_dma_sync_sg(adapter->dev,
2515 (struct scatterlist *)cmd->request_buffer,
2516 cmd->use_sg, PCI_DMA_TODEVICE);
2517 }
2518
2519 /* Return count of SG requests */
2520 return sgcnt;
2521 }
2522
2523
2524 /*
2525 * mega_8_to_40ld()
2526 *
2527 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
2528 * Enquiry3 structures for later use
2529 */
2530 static void
mega_8_to_40ld(mraid_inquiry * inquiry,mega_inquiry3 * enquiry3,mega_product_info * product_info)2531 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
2532 mega_product_info *product_info)
2533 {
2534 int i;
2535
2536 product_info->max_commands = inquiry->adapter_info.max_commands;
2537 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
2538 product_info->nchannels = inquiry->adapter_info.nchannels;
2539
2540 for (i = 0; i < 4; i++) {
2541 product_info->fw_version[i] =
2542 inquiry->adapter_info.fw_version[i];
2543
2544 product_info->bios_version[i] =
2545 inquiry->adapter_info.bios_version[i];
2546 }
2547 enquiry3->cache_flush_interval =
2548 inquiry->adapter_info.cache_flush_interval;
2549
2550 product_info->dram_size = inquiry->adapter_info.dram_size;
2551
2552 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
2553
2554 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
2555 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
2556 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
2557 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
2558 }
2559
2560 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
2561 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
2562 }
2563
2564
2565 static inline void
mega_free_sgl(adapter_t * adapter)2566 mega_free_sgl(adapter_t *adapter)
2567 {
2568 scb_t *scb;
2569 int i;
2570
2571 for(i = 0; i < adapter->max_cmds; i++) {
2572
2573 scb = &adapter->scb_list[i];
2574
2575 if( scb->sgl64 ) {
2576 pci_free_consistent(adapter->dev,
2577 sizeof(mega_sgl64) * adapter->sglen,
2578 scb->sgl64,
2579 scb->sgl_dma_addr);
2580
2581 scb->sgl64 = NULL;
2582 }
2583
2584 if( scb->pthru ) {
2585 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
2586 scb->pthru, scb->pthru_dma_addr);
2587
2588 scb->pthru = NULL;
2589 }
2590
2591 if( scb->epthru ) {
2592 pci_free_consistent(adapter->dev,
2593 sizeof(mega_ext_passthru),
2594 scb->epthru, scb->epthru_dma_addr);
2595
2596 scb->epthru = NULL;
2597 }
2598
2599 }
2600 }
2601
2602
2603 /*
2604 * Release the controller's resources
2605 */
2606 static int
megaraid_release(struct Scsi_Host * host)2607 megaraid_release(struct Scsi_Host *host)
2608 {
2609 adapter_t *adapter;
2610 mbox_t *mbox;
2611 u_char raw_mbox[sizeof(mbox_t)];
2612 #ifdef CONFIG_PROC_FS
2613 char buf[12] = { 0 };
2614 #endif
2615
2616 adapter = (adapter_t *)host->hostdata;
2617 mbox = (mbox_t *)raw_mbox;
2618
2619 printk(KERN_NOTICE "megaraid: being unloaded...");
2620
2621 /* Flush adapter cache */
2622 memset(raw_mbox, 0, sizeof(raw_mbox));
2623 raw_mbox[0] = FLUSH_ADAPTER;
2624
2625 if (adapter->flag & BOARD_IOMAP)
2626 irq_disable(adapter);
2627
2628 free_irq(adapter->host->irq, adapter);
2629
2630 /* Issue a blocking (interrupts disabled) command to the card */
2631 issue_scb_block(adapter, raw_mbox);
2632
2633 /* Flush disks cache */
2634 memset(raw_mbox, 0, sizeof(raw_mbox));
2635 raw_mbox[0] = FLUSH_SYSTEM;
2636
2637 /* Issue a blocking (interrupts disabled) command to the card */
2638 issue_scb_block(adapter, raw_mbox);
2639
2640
2641 /* Free our resources */
2642 if( adapter->flag & BOARD_MEMMAP ) {
2643 iounmap((void *)adapter->base);
2644 release_mem_region(adapter->host->base, 128);
2645 }
2646 else {
2647 release_region(adapter->base, 16);
2648 }
2649
2650 mega_free_sgl(adapter);
2651
2652 #ifdef CONFIG_PROC_FS
2653 if( adapter->controller_proc_dir_entry ) {
2654 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
2655 remove_proc_entry("config",
2656 adapter->controller_proc_dir_entry);
2657 remove_proc_entry("mailbox",
2658 adapter->controller_proc_dir_entry);
2659 #if MEGA_HAVE_ENH_PROC
2660 remove_proc_entry("rebuild-rate",
2661 adapter->controller_proc_dir_entry);
2662 remove_proc_entry("battery-status",
2663 adapter->controller_proc_dir_entry);
2664
2665 remove_proc_entry("diskdrives-ch0",
2666 adapter->controller_proc_dir_entry);
2667 remove_proc_entry("diskdrives-ch1",
2668 adapter->controller_proc_dir_entry);
2669 remove_proc_entry("diskdrives-ch2",
2670 adapter->controller_proc_dir_entry);
2671 remove_proc_entry("diskdrives-ch3",
2672 adapter->controller_proc_dir_entry);
2673
2674 remove_proc_entry("raiddrives-0-9",
2675 adapter->controller_proc_dir_entry);
2676 remove_proc_entry("raiddrives-10-19",
2677 adapter->controller_proc_dir_entry);
2678 remove_proc_entry("raiddrives-20-29",
2679 adapter->controller_proc_dir_entry);
2680 remove_proc_entry("raiddrives-30-39",
2681 adapter->controller_proc_dir_entry);
2682 #endif
2683
2684 sprintf(buf, "hba%d", adapter->host->host_no);
2685 remove_proc_entry(buf, mega_proc_dir_entry);
2686 }
2687 #endif
2688
2689 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
2690 adapter->mega_buffer, adapter->buf_dma_handle);
2691 kfree(adapter->scb_list);
2692 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
2693 (void *)adapter->una_mbox64, adapter->una_mbox64_dma);
2694
2695 pci_free_consistent( adapter->dev, sizeof(mega_passthru),
2696 (void*) adapter->int_pthru,
2697 adapter->int_pthru_dma_hndl );
2698
2699 pci_free_consistent( adapter->dev, INT_MEMBLK_SZ, adapter->int_data,
2700 adapter->int_data_dma_hndl );
2701
2702 hba_count--;
2703
2704 if( hba_count == 0 ) {
2705
2706 /*
2707 * Unregister the character device interface to the driver.
2708 */
2709 if (major >= 0) {
2710 unregister_chrdev(major, "megadev");
2711 }
2712
2713 unregister_reboot_notifier(&mega_notifier);
2714
2715 #ifdef CONFIG_PROC_FS
2716 if( adapter->controller_proc_dir_entry ) {
2717 remove_proc_entry ("megaraid", &proc_root);
2718 }
2719 #endif
2720
2721 }
2722
2723 /*
2724 * Release the controller memory. A word of warning this frees
2725 * hostdata and that includes adapter-> so be careful what you
2726 * dereference beyond this point
2727 */
2728 scsi_unregister(host);
2729
2730 #ifdef LSI_CONFIG_COMPAT
2731 unregister_ioctl32_conversion(MEGAIOCCMD);
2732 #endif
2733
2734 printk("ok.\n");
2735
2736 return 0;
2737 }
2738
2739 /*
2740 * Get information about the card/driver
2741 */
2742 const char *
megaraid_info(struct Scsi_Host * host)2743 megaraid_info(struct Scsi_Host *host)
2744 {
2745 static char buffer[512];
2746 adapter_t *adapter;
2747
2748 adapter = (adapter_t *)host->hostdata;
2749
2750 sprintf (buffer,
2751 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
2752 adapter->fw_version, adapter->product_info.max_commands,
2753 adapter->host->max_id, adapter->host->max_channel,
2754 adapter->host->max_lun);
2755 return buffer;
2756 }
2757
2758 /* shouldn't be used, but included for completeness */
2759 static int
megaraid_command(Scsi_Cmnd * cmd)2760 megaraid_command (Scsi_Cmnd *cmd)
2761 {
2762 printk(KERN_WARNING
2763 "megaraid critcal error: synchronous interface is not implemented.\n");
2764
2765 cmd->result = (DID_ERROR << 16);
2766 cmd->scsi_done(cmd);
2767
2768 return 1;
2769 }
2770
2771
2772 static int
megaraid_abort(Scsi_Cmnd * scp)2773 megaraid_abort(Scsi_Cmnd *scp)
2774 {
2775 adapter_t *adapter;
2776 struct list_head *pos, *next;
2777 scb_t *scb;
2778
2779 printk("megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n",
2780 scp->serial_number, scp->cmnd[0], scp->channel,
2781 scp->target, scp->lun);
2782
2783 adapter = (adapter_t *)scp->host->hostdata;
2784
2785 /*
2786 * Check if hw_error flag was set in previous RESET call. If it was,
2787 * then FW is hanging and unlikely to function. We can return FAILURE
2788 * from here and expect the RESET handler to be called.
2789 */
2790
2791 if (adapter->hw_error) {
2792 printk("megaraid: hw error, cannot abort\n");
2793 return FAILED;
2794 }
2795
2796 ASSERT( spin_is_locked(adapter->host_lock) );
2797
2798 /*
2799 * If cmd is waiting to be issued to FW, ABORT it with SUCEESS. If it
2800 * has already been issued, return FAILURE and expect RESET later.
2801 */
2802
2803 list_for_each_safe( pos, next, &adapter->pending_list ) {
2804
2805 scb = list_entry(pos, scb_t, list);
2806
2807 if( scb->cmd == scp ) { /* Found command */
2808
2809 scb->state |= SCB_ABORT;
2810
2811 if( !(scb->state & SCB_ISSUED) ) {
2812
2813 /* Not issued to the FW yet; ABORT it */
2814
2815 printk( "megaraid: %ld:%d, driver owner.\n",
2816 scp->serial_number, scb->idx);
2817
2818 scp->result = (DID_ABORT << 16);
2819
2820 mega_free_scb(adapter, scb);
2821
2822 scp->scsi_done(scp);
2823
2824 return SUCCESS;
2825 }
2826 else {
2827 /* Issued to the FW; can do nothing */
2828 return FAILED;
2829 }
2830 }
2831 }
2832
2833 /*
2834 * cmd is _not_ in our pending_list. Most likely we completed the cmd
2835 */
2836 return SUCCESS;
2837 }
2838
2839 static int
megaraid_reset(Scsi_Cmnd * cmd)2840 megaraid_reset(Scsi_Cmnd *cmd)
2841 {
2842 DECLARE_WAIT_QUEUE_HEAD(wq);
2843 int i;
2844 scb_t *scb;
2845 adapter_t *adapter;
2846 struct list_head *pos, *next;
2847 int rval;
2848
2849 adapter = (adapter_t *)cmd->host->hostdata;
2850
2851 ASSERT( spin_is_locked(adapter->host_lock) );
2852
2853 printk("megaraid: reset-%ld cmd=%x <c=%d t=%d l=%d>\n",
2854 cmd->serial_number, cmd->cmnd[0], cmd->channel, cmd->target,
2855 cmd->lun);
2856
2857 /*
2858 * Check if hw_error flag was set in previous RESET call. If it was,
2859 * then we needn't do any handling here. The controller will be marked
2860 * offline soon
2861 */
2862
2863 if (adapter->hw_error) {
2864 printk("megaraid: hw error, cannot reset\n");
2865 return FAILED;
2866 }
2867
2868 /*
2869 * Return all the pending cmds to the mid-layer with the cmd result
2870 * DID_RESET. Make sure you don't return the cmds ISSUED to FW.
2871 */
2872 list_for_each_safe( pos, next, &adapter->pending_list ) {
2873
2874 scb = list_entry(pos, scb_t, list);
2875 scb->state |= SCB_RESET;
2876
2877 if( !(scb->state & SCB_ISSUED) ) {
2878
2879 /* Not issued to the FW; return with RESET */
2880 cmd->result = (DID_RESET << 16);
2881
2882 mega_free_scb(adapter, scb);
2883 cmd->scsi_done(cmd);
2884 }
2885 }
2886
2887 /*
2888 * Under exceptional conditions, FW may take up to 3 mins to complete
2889 * processing all pending commands. We'll wait for maximum 3 mins to
2890 * see if all outstanding commands are completed.
2891 */
2892
2893 if (atomic_read(&adapter->pend_cmds) == 0)
2894 return SUCCESS;
2895
2896 printk("megaraid: %d pending cmds; max wait %d seconds\n",
2897 atomic_read(&adapter->pend_cmds), MBOX_RESET_WAIT );
2898
2899 for(i=0; (i<MBOX_RESET_WAIT)&&(atomic_read(&adapter->pend_cmds)); i++){
2900
2901 ASSERT( spin_is_locked(adapter->host_lock) );
2902
2903 /*
2904 * Perform the ack sequence, since interrupts are unavailable
2905 */
2906 if (adapter->flag & BOARD_MEMMAP)
2907 megaraid_memmbox_ack_sequence(adapter);
2908 else
2909 megaraid_iombox_ack_sequence(adapter);
2910
2911 spin_unlock(adapter->host_lock);
2912
2913 /* Print a message once every 5 seconds */
2914 if (!(i % 5)) {
2915 printk("megaraid: pending %d; remaining %d seconds\n",
2916 atomic_read(&adapter->pend_cmds),
2917 MBOX_RESET_WAIT - i);
2918 }
2919
2920 sleep_on_timeout(&wq, HZ);
2921
2922 spin_lock(adapter->host_lock);
2923 }
2924
2925 /*
2926 * If after 3 mins there are still outstanding cmds, set the hw_error
2927 * flag so that we can return from subsequent ABORT/RESET handlers
2928 * without any processing
2929 */
2930
2931 rval = SUCCESS;
2932 if (atomic_read(&adapter->pend_cmds)) {
2933
2934 adapter->hw_error = 1;
2935 printk("megaraid: critical hardware error!\n" );
2936 rval = FAILED;
2937 }
2938
2939 return rval;
2940 }
2941
2942 #ifdef CONFIG_PROC_FS
2943 /* Following code handles /proc fs */
2944
2945 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2946 S_IRUSR | S_IFREG, \
2947 controller_proc_dir_entry, \
2948 func, adapter)
2949
2950 /**
2951 * mega_create_proc_entry()
2952 * @index - index in soft state array
2953 * @parent - parent node for this /proc entry
2954 *
2955 * Creates /proc entries for our controllers.
2956 */
2957 static void
mega_create_proc_entry(int index,struct proc_dir_entry * parent)2958 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2959 {
2960 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2961 u8 string[64] = { 0 };
2962 adapter_t *adapter = hba_soft_state[index];
2963
2964 sprintf(string, "hba%d", adapter->host->host_no);
2965
2966 controller_proc_dir_entry =
2967 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2968
2969 if(!controller_proc_dir_entry) {
2970 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2971 return;
2972 }
2973 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2974 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2975 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2976 #if MEGA_HAVE_ENH_PROC
2977 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2978 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2979 proc_battery);
2980
2981 /*
2982 * Display each physical drive on its channel
2983 */
2984 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2985 proc_pdrv_ch0);
2986 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2987 proc_pdrv_ch1);
2988 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2989 proc_pdrv_ch2);
2990 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2991 proc_pdrv_ch3);
2992
2993 /*
2994 * Display a set of up to 10 logical drive through each of following
2995 * /proc entries
2996 */
2997 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2998 proc_rdrv_10);
2999 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
3000 proc_rdrv_20);
3001 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
3002 proc_rdrv_30);
3003 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
3004 proc_rdrv_40);
3005 #endif
3006 }
3007
3008
3009 /**
3010 * proc_read_config()
3011 * @page - buffer to write the data in
3012 * @start - where the actual data has been written in page
3013 * @offset - same meaning as the read system call
3014 * @count - same meaning as the read system call
3015 * @eof - set if no more data needs to be returned
3016 * @data - pointer to our soft state
3017 *
3018 * Display configuration information about the controller.
3019 */
3020 static int
proc_read_config(char * page,char ** start,off_t offset,int count,int * eof,void * data)3021 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
3022 void *data)
3023 {
3024
3025 adapter_t *adapter = (adapter_t *)data;
3026 int len = 0;
3027
3028 len += sprintf(page+len, "%s", MEGARAID_VERSION);
3029
3030 if(adapter->product_info.product_name[0])
3031 len += sprintf(page+len, "%s\n",
3032 adapter->product_info.product_name);
3033
3034 len += sprintf(page+len, "Controller Type: ");
3035
3036 if( adapter->flag & BOARD_MEMMAP ) {
3037 len += sprintf(page+len,
3038 "438/466/467/471/493/518/520/531/532\n");
3039 }
3040 else {
3041 len += sprintf(page+len,
3042 "418/428/434\n");
3043 }
3044
3045 if(adapter->flag & BOARD_40LD) {
3046 len += sprintf(page+len,
3047 "Controller Supports 40 Logical Drives\n");
3048 }
3049
3050 if(adapter->flag & BOARD_64BIT) {
3051 len += sprintf(page+len,
3052 "Controller capable of 64-bit memory addressing\n");
3053 }
3054 if( adapter->has_64bit_addr ) {
3055 len += sprintf(page+len,
3056 "Controller using 64-bit memory addressing\n");
3057 }
3058 else {
3059 len += sprintf(page+len,
3060 "Controller is not using 64-bit memory addressing\n");
3061 }
3062
3063 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
3064 adapter->host->irq);
3065
3066 len += sprintf(page+len, "Initial Logical Drives = %d, Channels = %d\n",
3067 adapter->numldrv, adapter->product_info.nchannels);
3068
3069 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
3070 adapter->fw_version, adapter->bios_version,
3071 adapter->product_info.dram_size);
3072
3073 len += sprintf(page+len,
3074 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
3075 adapter->product_info.max_commands, adapter->max_cmds);
3076
3077 len += sprintf(page+len, "support_ext_cdb = %d\n",
3078 adapter->support_ext_cdb);
3079 len += sprintf(page+len, "support_random_del = %d\n",
3080 adapter->support_random_del);
3081 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
3082 adapter->boot_ldrv_enabled);
3083 len += sprintf(page+len, "boot_ldrv = %d\n",
3084 adapter->boot_ldrv);
3085 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
3086 adapter->boot_pdrv_enabled);
3087 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
3088 adapter->boot_pdrv_ch);
3089 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
3090 adapter->boot_pdrv_tgt);
3091 len += sprintf(page+len, "quiescent = %d\n",
3092 atomic_read(&adapter->quiescent));
3093 len += sprintf(page+len, "has_cluster = %d\n",
3094 adapter->has_cluster);
3095
3096 len += sprintf(page+len, "\nModule Parameters:\n");
3097 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
3098 max_cmd_per_lun);
3099 len += sprintf(page+len, "max_sectors_per_io = %d\n",
3100 max_sectors_per_io);
3101
3102 *eof = 1;
3103
3104 return len;
3105 }
3106
3107
3108
3109 /**
3110 * proc_read_stat()
3111 * @page - buffer to write the data in
3112 * @start - where the actual data has been written in page
3113 * @offset - same meaning as the read system call
3114 * @count - same meaning as the read system call
3115 * @eof - set if no more data needs to be returned
3116 * @data - pointer to our soft state
3117 *
3118 * Diaplay statistical information about the I/O activity.
3119 */
3120 static int
proc_read_stat(char * page,char ** start,off_t offset,int count,int * eof,void * data)3121 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
3122 void *data)
3123 {
3124 adapter_t *adapter;
3125 int len;
3126 int i;
3127
3128 i = 0; /* avoid compilation warnings */
3129 len = 0;
3130 adapter = (adapter_t *)data;
3131
3132 len = sprintf(page, "Statistical Information for this controller\n");
3133 len += sprintf(page+len, "pend_cmds = %d\n",
3134 atomic_read(&adapter->pend_cmds));
3135 #if MEGA_HAVE_STATS
3136 for(i = 0; i < adapter->numldrv; i++) {
3137 len += sprintf(page+len, "Logical Drive %d:\n", i);
3138
3139 len += sprintf(page+len,
3140 "\tReads Issued = %lu, Writes Issued = %lu\n",
3141 adapter->nreads[i], adapter->nwrites[i]);
3142
3143 len += sprintf(page+len,
3144 "\tSectors Read = %lu, Sectors Written = %lu\n",
3145 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
3146
3147 len += sprintf(page+len,
3148 "\tRead errors = %lu, Write errors = %lu\n\n",
3149 adapter->rd_errors[i], adapter->wr_errors[i]);
3150 }
3151 #else
3152 len += sprintf(page+len,
3153 "IO and error counters not compiled in driver.\n");
3154 #endif
3155
3156 *eof = 1;
3157
3158 return len;
3159 }
3160
3161
3162 /**
3163 * proc_read_mbox()
3164 * @page - buffer to write the data in
3165 * @start - where the actual data has been written in page
3166 * @offset - same meaning as the read system call
3167 * @count - same meaning as the read system call
3168 * @eof - set if no more data needs to be returned
3169 * @data - pointer to our soft state
3170 *
3171 * Display mailbox information for the last command issued. This information
3172 * is good for debugging.
3173 */
3174 static int
proc_read_mbox(char * page,char ** start,off_t offset,int count,int * eof,void * data)3175 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
3176 void *data)
3177 {
3178
3179 adapter_t *adapter = (adapter_t *)data;
3180 volatile mbox_t *mbox = adapter->mbox;
3181 int len = 0;
3182
3183 len = sprintf(page, "Contents of Mail Box Structure\n");
3184 len += sprintf(page+len, " Fw Command = 0x%02x\n", mbox->cmd);
3185 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", mbox->cmdid);
3186 len += sprintf(page+len, " No of Sectors= %04d\n", mbox->numsectors);
3187 len += sprintf(page+len, " LBA = 0x%02x\n", mbox->lba);
3188 len += sprintf(page+len, " DTA = 0x%08x\n", mbox->xferaddr);
3189 len += sprintf(page+len, " Logical Drive= 0x%02x\n", mbox->logdrv);
3190 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
3191 mbox->numsgelements);
3192 len += sprintf(page+len, " Busy = %01x\n", mbox->busy);
3193 len += sprintf(page+len, " Status = 0x%02x\n", mbox->status);
3194
3195 *eof = 1;
3196
3197 return len;
3198 }
3199
3200
3201 /**
3202 * mega_allocate_inquiry()
3203 * @dma_handle - handle returned for dma address
3204 * @pdev - handle to pci device
3205 *
3206 * allocates memory for inquiry structure
3207 */
3208 static inline caddr_t
mega_allocate_inquiry(dma_addr_t * dma_handle,struct pci_dev * pdev)3209 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
3210 {
3211 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
3212 }
3213
3214
3215 static inline void
mega_free_inquiry(caddr_t inquiry,dma_addr_t dma_handle,struct pci_dev * pdev)3216 mega_free_inquiry(caddr_t inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
3217 {
3218 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
3219 }
3220
3221
3222 /**
3223 * proc_rebuild_rate()
3224 * @page - buffer to write the data in
3225 * @start - where the actual data has been written in page
3226 * @offset - same meaning as the read system call
3227 * @count - same meaning as the read system call
3228 * @eof - set if no more data needs to be returned
3229 * @data - pointer to our soft state
3230 *
3231 * Display current rebuild rate
3232 */
3233 static int
proc_rebuild_rate(char * page,char ** start,off_t offset,int count,int * eof,void * data)3234 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
3235 void *data)
3236 {
3237 adapter_t *adapter = (adapter_t *)data;
3238 dma_addr_t dma_handle;
3239 caddr_t inquiry;
3240 struct pci_dev *pdev;
3241 int len = 0;
3242
3243 pdev = adapter->dev;
3244
3245 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
3246 *eof = 1;
3247 return len;
3248 }
3249
3250 if( mega_adapinq(adapter, dma_handle) != 0 ) {
3251
3252 len = sprintf(page, "Adapter inquiry failed.\n");
3253
3254 printk(KERN_WARNING "megaraid: inquiry failed.\n");
3255
3256 mega_free_inquiry(inquiry, dma_handle, pdev);
3257
3258 *eof = 1;
3259
3260 return len;
3261 }
3262
3263 if( adapter->flag & BOARD_40LD ) {
3264 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
3265 ((mega_inquiry3 *)inquiry)->rebuild_rate);
3266 }
3267 else {
3268 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
3269 ((mraid_ext_inquiry *)
3270 inquiry)->raid_inq.adapter_info.rebuild_rate);
3271 }
3272
3273
3274 mega_free_inquiry(inquiry, dma_handle, pdev);
3275
3276 *eof = 1;
3277
3278 return len;
3279 }
3280
3281
3282 /**
3283 * proc_battery()
3284 * @page - buffer to write the data in
3285 * @start - where the actual data has been written in page
3286 * @offset - same meaning as the read system call
3287 * @count - same meaning as the read system call
3288 * @eof - set if no more data needs to be returned
3289 * @data - pointer to our soft state
3290 *
3291 * Display information about the battery module on the controller.
3292 */
3293 static int
proc_battery(char * page,char ** start,off_t offset,int count,int * eof,void * data)3294 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
3295 void *data)
3296 {
3297 adapter_t *adapter = (adapter_t *)data;
3298 dma_addr_t dma_handle;
3299 caddr_t inquiry;
3300 struct pci_dev *pdev;
3301 u8 battery_status = 0;
3302 char str[256];
3303 int len = 0;
3304
3305 pdev = adapter->dev;
3306
3307 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
3308 *eof = 1;
3309 return len;
3310 }
3311
3312 if( mega_adapinq(adapter, dma_handle) != 0 ) {
3313
3314 len = sprintf(page, "Adapter inquiry failed.\n");
3315
3316 printk(KERN_WARNING "megaraid: inquiry failed.\n");
3317
3318 mega_free_inquiry(inquiry, dma_handle, pdev);
3319
3320 *eof = 1;
3321
3322 return len;
3323 }
3324
3325 if( adapter->flag & BOARD_40LD ) {
3326 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
3327 }
3328 else {
3329 battery_status = ((mraid_ext_inquiry *)inquiry)->
3330 raid_inq.adapter_info.battery_status;
3331 }
3332
3333 /*
3334 * Decode the battery status
3335 */
3336 sprintf(str, "Battery Status:[%d]", battery_status);
3337
3338 if(battery_status == MEGA_BATT_CHARGE_DONE)
3339 strcat(str, " Charge Done");
3340
3341 if(battery_status & MEGA_BATT_MODULE_MISSING)
3342 strcat(str, " Module Missing");
3343
3344 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
3345 strcat(str, " Low Voltage");
3346
3347 if(battery_status & MEGA_BATT_TEMP_HIGH)
3348 strcat(str, " Temperature High");
3349
3350 if(battery_status & MEGA_BATT_PACK_MISSING)
3351 strcat(str, " Pack Missing");
3352
3353 if(battery_status & MEGA_BATT_CHARGE_INPROG)
3354 strcat(str, " Charge In-progress");
3355
3356 if(battery_status & MEGA_BATT_CHARGE_FAIL)
3357 strcat(str, " Charge Fail");
3358
3359 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
3360 strcat(str, " Cycles Exceeded");
3361
3362 len = sprintf(page, "%s\n", str);
3363
3364
3365 mega_free_inquiry(inquiry, dma_handle, pdev);
3366
3367 *eof = 1;
3368
3369 return len;
3370 }
3371
3372
3373 /**
3374 * proc_pdrv_ch0()
3375 * @page - buffer to write the data in
3376 * @start - where the actual data has been written in page
3377 * @offset - same meaning as the read system call
3378 * @count - same meaning as the read system call
3379 * @eof - set if no more data needs to be returned
3380 * @data - pointer to our soft state
3381 *
3382 * Display information about the physical drives on physical channel 0.
3383 */
3384 static int
proc_pdrv_ch0(char * page,char ** start,off_t offset,int count,int * eof,void * data)3385 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
3386 void *data)
3387 {
3388 adapter_t *adapter = (adapter_t *)data;
3389
3390 *eof = 1;
3391
3392 return (proc_pdrv(adapter, page, 0));
3393 }
3394
3395
3396 /**
3397 * proc_pdrv_ch1()
3398 * @page - buffer to write the data in
3399 * @start - where the actual data has been written in page
3400 * @offset - same meaning as the read system call
3401 * @count - same meaning as the read system call
3402 * @eof - set if no more data needs to be returned
3403 * @data - pointer to our soft state
3404 *
3405 * Display information about the physical drives on physical channel 1.
3406 */
3407 static int
proc_pdrv_ch1(char * page,char ** start,off_t offset,int count,int * eof,void * data)3408 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
3409 void *data)
3410 {
3411 adapter_t *adapter = (adapter_t *)data;
3412
3413 *eof = 1;
3414
3415 return (proc_pdrv(adapter, page, 1));
3416 }
3417
3418
3419 /**
3420 * proc_pdrv_ch2()
3421 * @page - buffer to write the data in
3422 * @start - where the actual data has been written in page
3423 * @offset - same meaning as the read system call
3424 * @count - same meaning as the read system call
3425 * @eof - set if no more data needs to be returned
3426 * @data - pointer to our soft state
3427 *
3428 * Display information about the physical drives on physical channel 2.
3429 */
3430 static int
proc_pdrv_ch2(char * page,char ** start,off_t offset,int count,int * eof,void * data)3431 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
3432 void *data)
3433 {
3434 adapter_t *adapter = (adapter_t *)data;
3435
3436 *eof = 1;
3437
3438 return (proc_pdrv(adapter, page, 2));
3439 }
3440
3441
3442 /**
3443 * proc_pdrv_ch3()
3444 * @page - buffer to write the data in
3445 * @start - where the actual data has been written in page
3446 * @offset - same meaning as the read system call
3447 * @count - same meaning as the read system call
3448 * @eof - set if no more data needs to be returned
3449 * @data - pointer to our soft state
3450 *
3451 * Display information about the physical drives on physical channel 3.
3452 */
3453 static int
proc_pdrv_ch3(char * page,char ** start,off_t offset,int count,int * eof,void * data)3454 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
3455 void *data)
3456 {
3457 adapter_t *adapter = (adapter_t *)data;
3458
3459 *eof = 1;
3460
3461 return (proc_pdrv(adapter, page, 3));
3462 }
3463
3464
3465 /**
3466 * proc_pdrv()
3467 * @page - buffer to write the data in
3468 * @adapter - pointer to our soft state
3469 *
3470 * Display information about the physical drives.
3471 */
3472 static int
proc_pdrv(adapter_t * adapter,char * page,int channel)3473 proc_pdrv(adapter_t *adapter, char *page, int channel)
3474 {
3475 dma_addr_t dma_handle;
3476 char *scsi_inq;
3477 dma_addr_t scsi_inq_dma_handle;
3478 caddr_t inquiry;
3479 struct pci_dev *pdev;
3480 u8 *pdrv_state;
3481 u8 state;
3482 int tgt;
3483 int max_channels;
3484 int len = 0;
3485 char str[80];
3486 int i;
3487
3488 pdev = adapter->dev;
3489
3490 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
3491 return len;
3492 }
3493
3494 if( mega_adapinq(adapter, dma_handle) != 0 ) {
3495
3496 len = sprintf(page, "Adapter inquiry failed.\n");
3497
3498 printk(KERN_WARNING "megaraid: inquiry failed.\n");
3499
3500 mega_free_inquiry(inquiry, dma_handle, pdev);
3501
3502 return len;
3503 }
3504
3505
3506 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
3507
3508 if( scsi_inq == NULL ) {
3509 len = sprintf(page, "memory not available for scsi inq.\n");
3510
3511 mega_free_inquiry(inquiry, dma_handle, pdev);
3512
3513 return len;
3514 }
3515
3516 if( adapter->flag & BOARD_40LD ) {
3517 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
3518 }
3519 else {
3520 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
3521 raid_inq.pdrv_info.pdrv_state;
3522 }
3523
3524 max_channels = adapter->product_info.nchannels;
3525
3526 if (channel >= max_channels) {
3527 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
3528 mega_free_inquiry(inquiry, dma_handle, pdev);
3529 return 0;
3530 }
3531
3532 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
3533
3534 i = channel*16 + tgt;
3535
3536 state = *(pdrv_state + i);
3537
3538 switch( state & 0x0F ) {
3539
3540 case PDRV_ONLINE:
3541 sprintf(str, "Channel:%2d Id:%2d State: Online",
3542 channel, tgt);
3543 break;
3544
3545 case PDRV_FAILED:
3546 sprintf(str, "Channel:%2d Id:%2d State: Failed",
3547 channel, tgt);
3548 break;
3549
3550 case PDRV_RBLD:
3551 sprintf(str, "Channel:%2d Id:%2d State: Rebuild",
3552 channel, tgt);
3553 break;
3554
3555 case PDRV_HOTSPARE:
3556 sprintf(str, "Channel:%2d Id:%2d State: Hot spare",
3557 channel, tgt);
3558 break;
3559
3560 default:
3561 sprintf(str, "Channel:%2d Id:%2d State: Un-configured",
3562 channel, tgt);
3563 break;
3564
3565 }
3566
3567 /*
3568 * This interface displays inquiries for disk drives
3569 * only. Inquries for logical drives and non-disk
3570 * devices are available through /proc/scsi/scsi
3571 */
3572 memset(scsi_inq, 0, 256);
3573 if( mega_internal_dev_inquiry(adapter, channel, tgt,
3574 scsi_inq_dma_handle) ||
3575 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
3576 continue;
3577 }
3578
3579 /*
3580 * Check for overflow. We print less than 240
3581 * characters for inquiry
3582 */
3583 if( (len + 240) >= ((int) PAGE_SIZE) ) break;
3584
3585 len += sprintf(page+len, "%s.\n", str);
3586
3587 len += mega_print_inquiry(page+len, scsi_inq);
3588 }
3589
3590 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
3591
3592 mega_free_inquiry(inquiry, dma_handle, pdev);
3593
3594 return len;
3595 }
3596
3597
3598 /*
3599 * Display scsi inquiry
3600 */
3601 static int
mega_print_inquiry(char * page,char * scsi_inq)3602 mega_print_inquiry(char *page, char *scsi_inq)
3603 {
3604 int len = 0;
3605 int i;
3606
3607 len = sprintf(page, " Vendor: ");
3608 for( i = 8; i < 16; i++ ) {
3609 len += sprintf(page+len, "%c", scsi_inq[i]);
3610 }
3611
3612 len += sprintf(page+len, " Model: ");
3613
3614 for( i = 16; i < 32; i++ ) {
3615 len += sprintf(page+len, "%c", scsi_inq[i]);
3616 }
3617
3618 len += sprintf(page+len, " Rev: ");
3619
3620 for( i = 32; i < 36; i++ ) {
3621 len += sprintf(page+len, "%c", scsi_inq[i]);
3622 }
3623
3624 len += sprintf(page+len, "\n");
3625
3626 i = scsi_inq[0] & 0x1f;
3627
3628 len += sprintf(page+len, " Type: %s ",
3629 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
3630 "Unknown ");
3631
3632 len += sprintf(page+len,
3633 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
3634
3635 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
3636 len += sprintf(page+len, " CCS\n");
3637 else
3638 len += sprintf(page+len, "\n");
3639
3640 return len;
3641 }
3642
3643
3644 /**
3645 * proc_rdrv_10()
3646 * @page - buffer to write the data in
3647 * @start - where the actual data has been written in page
3648 * @offset - same meaning as the read system call
3649 * @count - same meaning as the read system call
3650 * @eof - set if no more data needs to be returned
3651 * @data - pointer to our soft state
3652 *
3653 * Display real time information about the logical drives 0 through 9.
3654 */
3655 static int
proc_rdrv_10(char * page,char ** start,off_t offset,int count,int * eof,void * data)3656 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
3657 void *data)
3658 {
3659 adapter_t *adapter = (adapter_t *)data;
3660
3661 *eof = 1;
3662
3663 return (proc_rdrv(adapter, page, 0, 9));
3664 }
3665
3666
3667 /**
3668 * proc_rdrv_20()
3669 * @page - buffer to write the data in
3670 * @start - where the actual data has been written in page
3671 * @offset - same meaning as the read system call
3672 * @count - same meaning as the read system call
3673 * @eof - set if no more data needs to be returned
3674 * @data - pointer to our soft state
3675 *
3676 * Display real time information about the logical drives 10 through 19.
3677 */
3678 static int
proc_rdrv_20(char * page,char ** start,off_t offset,int count,int * eof,void * data)3679 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
3680 void *data)
3681 {
3682 adapter_t *adapter = (adapter_t *)data;
3683
3684 *eof = 1;
3685
3686 return (proc_rdrv(adapter, page, 10, 19));
3687 }
3688
3689
3690 /**
3691 * proc_rdrv_30()
3692 * @page - buffer to write the data in
3693 * @start - where the actual data has been written in page
3694 * @offset - same meaning as the read system call
3695 * @count - same meaning as the read system call
3696 * @eof - set if no more data needs to be returned
3697 * @data - pointer to our soft state
3698 *
3699 * Display real time information about the logical drives 20 through 29.
3700 */
3701 static int
proc_rdrv_30(char * page,char ** start,off_t offset,int count,int * eof,void * data)3702 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
3703 void *data)
3704 {
3705 adapter_t *adapter = (adapter_t *)data;
3706
3707 *eof = 1;
3708
3709 return (proc_rdrv(adapter, page, 20, 29));
3710 }
3711
3712
3713 /**
3714 * proc_rdrv_40()
3715 * @page - buffer to write the data in
3716 * @start - where the actual data has been written in page
3717 * @offset - same meaning as the read system call
3718 * @count - same meaning as the read system call
3719 * @eof - set if no more data needs to be returned
3720 * @data - pointer to our soft state
3721 *
3722 * Display real time information about the logical drives 30 through 39.
3723 */
3724 static int
proc_rdrv_40(char * page,char ** start,off_t offset,int count,int * eof,void * data)3725 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
3726 void *data)
3727 {
3728 adapter_t *adapter = (adapter_t *)data;
3729
3730 *eof = 1;
3731
3732 return (proc_rdrv(adapter, page, 30, 39));
3733 }
3734
3735
3736 /**
3737 * proc_rdrv()
3738 * @page - buffer to write the data in
3739 * @adapter - pointer to our soft state
3740 * @start - starting logical drive to display
3741 * @end - ending logical drive to display
3742 *
3743 * We do not print the inquiry information since its already available through
3744 * /proc/scsi/scsi interface
3745 */
3746 static int
proc_rdrv(adapter_t * adapter,char * page,int start,int end)3747 proc_rdrv(adapter_t *adapter, char *page, int start, int end)
3748 {
3749 dma_addr_t dma_handle;
3750 logdrv_param *lparam;
3751 megacmd_t mc;
3752 char *disk_array;
3753 dma_addr_t disk_array_dma_handle;
3754 caddr_t inquiry;
3755 struct pci_dev *pdev;
3756 u8 *rdrv_state;
3757 int num_ldrv;
3758 u32 array_sz;
3759 int len = 0;
3760 int i;
3761 u8 span8_flag = 1;
3762
3763 pdev = adapter->dev;
3764
3765 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
3766 return len;
3767 }
3768
3769 if( mega_adapinq(adapter, dma_handle) != 0 ) {
3770
3771 len = sprintf(page, "Adapter inquiry failed.\n");
3772
3773 printk(KERN_WARNING "megaraid: inquiry failed.\n");
3774
3775 mega_free_inquiry(inquiry, dma_handle, pdev);
3776
3777 return len;
3778 }
3779
3780 memset(&mc, 0, sizeof(megacmd_t));
3781
3782 if( adapter->flag & BOARD_40LD ) {
3783
3784 array_sz = sizeof(disk_array_40ld);
3785
3786 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
3787
3788 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
3789 }
3790 else {
3791 /*
3792 * 'array_sz' is either the size of diskarray_span4_t or the
3793 * size of disk_array_span8_t. We use span8_t's size because
3794 * it is bigger of the two.
3795 */
3796 array_sz = sizeof( diskarray_span8_t );
3797
3798 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
3799 raid_inq.logdrv_info.ldrv_state;
3800
3801 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
3802 raid_inq.logdrv_info.num_ldrv;
3803 }
3804
3805 disk_array = pci_alloc_consistent(pdev, array_sz,
3806 &disk_array_dma_handle);
3807
3808 if( disk_array == NULL ) {
3809 len = sprintf(page, "memory not available.\n");
3810
3811 mega_free_inquiry(inquiry, dma_handle, pdev);
3812
3813 return len;
3814 }
3815
3816 mc.xferaddr = (u32)disk_array_dma_handle;
3817
3818 if( adapter->flag & BOARD_40LD ) {
3819 mc.cmd = FC_NEW_CONFIG;
3820 mc.opcode = OP_DCMD_READ_CONFIG;
3821
3822 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3823
3824 len = sprintf(page, "40LD read config failed.\n");
3825
3826 mega_free_inquiry(inquiry, dma_handle, pdev);
3827
3828 pci_free_consistent(pdev, array_sz, disk_array,
3829 disk_array_dma_handle);
3830
3831 return len;
3832 }
3833
3834 }
3835 else {
3836 /*
3837 * Try 8-Span "read config" command
3838 */
3839 mc.cmd = NEW_READ_CONFIG_8LD;
3840
3841 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3842
3843 /*
3844 * 8-Span command failed; try 4-Span command
3845 */
3846 span8_flag = 0;
3847 mc.cmd = READ_CONFIG_8LD;
3848
3849 if( mega_internal_command(adapter, LOCK_INT, &mc,
3850 NULL) ){
3851
3852 len = sprintf(page,
3853 "8LD read config failed.\n");
3854
3855 mega_free_inquiry(inquiry, dma_handle, pdev);
3856
3857 pci_free_consistent(pdev, array_sz,
3858 disk_array,
3859 disk_array_dma_handle);
3860
3861 return len;
3862 }
3863 }
3864 }
3865
3866 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3867
3868 if( adapter->flag & BOARD_40LD ) {
3869 lparam =
3870 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3871 }
3872 else {
3873 if( span8_flag ) {
3874 lparam = (logdrv_param*) &((diskarray_span8_t*)
3875 (disk_array))->log_drv[i];
3876 }
3877 else {
3878 lparam = (logdrv_param*) &((diskarray_span4_t*)
3879 (disk_array))->log_drv[i];
3880 }
3881 }
3882
3883 /*
3884 * Check for overflow. We print less than 240 characters for
3885 * information about each logical drive.
3886 */
3887 if( (len + 240) >= ((int) PAGE_SIZE) ) break;
3888
3889 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3890
3891 switch( rdrv_state[i] & 0x0F ) {
3892 case RDRV_OFFLINE:
3893 len += sprintf(page+len, "state: offline");
3894 break;
3895
3896 case RDRV_DEGRADED:
3897 len += sprintf(page+len, "state: degraded");
3898 break;
3899
3900 case RDRV_OPTIMAL:
3901 len += sprintf(page+len, "state: optimal");
3902 break;
3903
3904 case RDRV_DELETED:
3905 len += sprintf(page+len, "state: deleted");
3906 break;
3907
3908 default:
3909 len += sprintf(page+len, "state: unknown");
3910 break;
3911 }
3912
3913 /*
3914 * Check if check consistency or initialization is going on
3915 * for this logical drive.
3916 */
3917 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3918 len += sprintf(page+len,
3919 ", check-consistency in progress");
3920 }
3921 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3922 len += sprintf(page+len,
3923 ", initialization in progress");
3924 }
3925
3926 len += sprintf(page+len, "\n");
3927
3928 len += sprintf(page+len, "Span depth:%3d, ",
3929 lparam->span_depth);
3930
3931 len += sprintf(page+len, "RAID level:%3d, ",
3932 lparam->level);
3933
3934 len += sprintf(page+len, "Stripe size:%3d, ",
3935 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3936
3937 len += sprintf(page+len, "Row size:%3d\n",
3938 lparam->row_size);
3939
3940
3941 len += sprintf(page+len, "Read Policy: ");
3942
3943 switch(lparam->read_ahead) {
3944
3945 case NO_READ_AHEAD:
3946 len += sprintf(page+len, "No read ahead, ");
3947 break;
3948
3949 case READ_AHEAD:
3950 len += sprintf(page+len, "Read ahead, ");
3951 break;
3952
3953 case ADAP_READ_AHEAD:
3954 len += sprintf(page+len, "Adaptive, ");
3955 break;
3956
3957 }
3958
3959 len += sprintf(page+len, "Write Policy: ");
3960
3961 switch(lparam->write_mode) {
3962
3963 case WRMODE_WRITE_THRU:
3964 len += sprintf(page+len, "Write thru, ");
3965 break;
3966
3967 case WRMODE_WRITE_BACK:
3968 len += sprintf(page+len, "Write back, ");
3969 break;
3970 }
3971
3972 len += sprintf(page+len, "Cache Policy: ");
3973
3974 switch(lparam->direct_io) {
3975
3976 case CACHED_IO:
3977 len += sprintf(page+len, "Cached IO\n\n");
3978 break;
3979
3980 case DIRECT_IO:
3981 len += sprintf(page+len, "Direct IO\n\n");
3982 break;
3983 }
3984 }
3985
3986 mega_free_inquiry(inquiry, dma_handle, pdev);
3987
3988 pci_free_consistent(pdev, array_sz, disk_array,
3989 disk_array_dma_handle);
3990
3991 return len;
3992 }
3993
3994 #endif
3995
3996
3997 /**
3998 * megaraid_reboot_notify()
3999 * @this - unused
4000 * @code - shutdown code
4001 * @unused - unused
4002 *
4003 * This routine will be called when the use has done a forced shutdown on the
4004 * system. Flush the Adapter and disks cache.
4005 */
4006 static int
megaraid_reboot_notify(struct notifier_block * this,unsigned long code,void * unused)4007 megaraid_reboot_notify (struct notifier_block *this, unsigned long code,
4008 void *unused)
4009 {
4010 DECLARE_WAIT_QUEUE_HEAD(wq);
4011 adapter_t *adapter;
4012 struct Scsi_Host *host;
4013 u8 raw_mbox[sizeof(mbox_t)];
4014 mbox_t *mbox;
4015 int i;
4016
4017 /*
4018 * Flush the controller's cache irrespective of the codes coming down.
4019 * SYS_DOWN, SYS_HALT, SYS_RESTART, SYS_POWER_OFF
4020 */
4021 for( i = 0; i < hba_count; i++ ) {
4022 printk(KERN_INFO "megaraid: flushing adapter %d..", i);
4023 host = hba_soft_state[i]->host;
4024
4025 adapter = (adapter_t *)host->hostdata;
4026 mbox = (mbox_t *)raw_mbox;
4027
4028 /* Flush adapter cache */
4029 memset(raw_mbox, 0, sizeof(raw_mbox));
4030 raw_mbox[0] = FLUSH_ADAPTER;
4031
4032 if (adapter->flag & BOARD_IOMAP)
4033 irq_disable(adapter);
4034
4035 free_irq(adapter->host->irq, adapter);
4036
4037 /*
4038 * Issue a blocking (interrupts disabled) command to
4039 * the card
4040 */
4041 issue_scb_block(adapter, raw_mbox);
4042
4043 /* Flush disks cache */
4044 memset(raw_mbox, 0, sizeof(raw_mbox));
4045 raw_mbox[0] = FLUSH_SYSTEM;
4046
4047 issue_scb_block(adapter, raw_mbox);
4048
4049 printk("Done.\n");
4050
4051 if( atomic_read(&adapter->pend_cmds) > 0 ) {
4052 printk(KERN_WARNING "megaraid: pending commands!!\n");
4053 }
4054 }
4055
4056 /*
4057 * Have a delibrate delay to make sure all the caches are
4058 * actually flushed.
4059 */
4060 printk(KERN_INFO "megaraid: cache flush delay: ");
4061 for( i = 9; i >= 0; i-- ) {
4062 printk("\b\b\b[%d]", i);
4063 sleep_on_timeout(&wq, HZ);
4064 }
4065 printk("\b\b\b[done]\n");
4066 sleep_on_timeout(&wq, HZ);
4067
4068 return NOTIFY_DONE;
4069 }
4070
4071 /**
4072 * mega_init_scb()
4073 * @adapter - pointer to our soft state
4074 *
4075 * Allocate memory for the various pointers in the scb structures:
4076 * scatter-gather list pointer, passthru and extended passthru structure
4077 * pointers.
4078 */
4079 static int
mega_init_scb(adapter_t * adapter)4080 mega_init_scb(adapter_t *adapter)
4081 {
4082 scb_t *scb;
4083 int i;
4084
4085 for( i = 0; i < adapter->max_cmds; i++ ) {
4086
4087 scb = &adapter->scb_list[i];
4088
4089 scb->sgl64 = NULL;
4090 scb->sgl = NULL;
4091 scb->pthru = NULL;
4092 scb->epthru = NULL;
4093 }
4094
4095 for( i = 0; i < adapter->max_cmds; i++ ) {
4096
4097 scb = &adapter->scb_list[i];
4098
4099 scb->idx = i;
4100
4101 scb->sgl64 = pci_alloc_consistent(adapter->dev,
4102 sizeof(mega_sgl64) * adapter->sglen,
4103 &scb->sgl_dma_addr);
4104
4105 scb->sgl = (mega_sglist *)scb->sgl64;
4106
4107 if( !scb->sgl ) {
4108 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
4109 mega_free_sgl(adapter);
4110 return -1;
4111 }
4112
4113 scb->pthru = pci_alloc_consistent(adapter->dev,
4114 sizeof(mega_passthru),
4115 &scb->pthru_dma_addr);
4116
4117 if( !scb->pthru ) {
4118 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
4119 mega_free_sgl(adapter);
4120 return -1;
4121 }
4122
4123 scb->epthru = pci_alloc_consistent(adapter->dev,
4124 sizeof(mega_ext_passthru),
4125 &scb->epthru_dma_addr);
4126
4127 if( !scb->epthru ) {
4128 printk(KERN_WARNING
4129 "Can't allocate extended passthru.\n");
4130 mega_free_sgl(adapter);
4131 return -1;
4132 }
4133
4134
4135 scb->dma_type = MEGA_DMA_TYPE_NONE;
4136
4137 /*
4138 * Link to free list
4139 * lock not required since we are loading the driver, so no
4140 * commands possible right now.
4141 */
4142 scb->state = SCB_FREE;
4143 scb->cmd = NULL;
4144 list_add(&scb->list, &adapter->free_list);
4145 }
4146
4147 return 0;
4148 }
4149
4150
4151 /**
4152 * megadev_open()
4153 * @inode - unused
4154 * @filep - unused
4155 *
4156 * Routines for the character/ioctl interface to the driver. Find out if this
4157 * is a valid open. If yes, increment the module use count so that it cannot
4158 * be unloaded.
4159 */
4160 static int
megadev_open(struct inode * inode,struct file * filep)4161 megadev_open (struct inode *inode, struct file *filep)
4162 {
4163 /*
4164 * Only allow superuser to access private ioctl interface
4165 */
4166 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
4167
4168 MOD_INC_USE_COUNT;
4169 return 0;
4170 }
4171
4172
4173 #ifdef LSI_CONFIG_COMPAT
4174 static int
megadev_compat_ioctl(unsigned int fd,unsigned int cmd,unsigned long arg,struct file * filep)4175 megadev_compat_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg,
4176 struct file *filep)
4177 {
4178 struct inode *inode = filep->f_dentry->d_inode;
4179
4180 return megadev_ioctl_entry(inode, filep, cmd, arg);
4181 }
4182 #endif
4183
4184 static int
megadev_ioctl_entry(struct inode * inode,struct file * filep,unsigned int cmd,unsigned long arg)4185 megadev_ioctl_entry(struct inode *inode, struct file *filep, unsigned int cmd,
4186 unsigned long arg)
4187 {
4188 int rval;
4189 down( &megaraid_ioc_mtx );
4190 rval = megadev_ioctl( inode, filep, cmd, arg );
4191 up( &megaraid_ioc_mtx );
4192 return rval;
4193 }
4194
4195 /**
4196 * megadev_ioctl()
4197 * @inode - Our device inode
4198 * @filep - unused
4199 * @cmd - ioctl command
4200 * @arg - user buffer
4201 *
4202 * ioctl entry point for our private ioctl interface. We move the data in from
4203 * the user space, prepare the command (if necessary, convert the old MIMD
4204 * ioctl to new ioctl command), and issue a synchronous command to the
4205 * controller.
4206 */
4207 static int
megadev_ioctl(struct inode * inode,struct file * filep,unsigned int cmd,unsigned long arg)4208 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
4209 unsigned long arg)
4210 {
4211 adapter_t *adapter;
4212 nitioctl_t uioc;
4213 int adapno;
4214 int rval;
4215 mega_passthru *upthru; /* user address for passthru */
4216 mega_passthru *pthru; /* copy user passthru here */
4217 void *data = NULL; /* data to be transferred */
4218 dma_addr_t data_dma_hndl = 0;
4219 megacmd_t mc;
4220 megastat_t *ustats;
4221 int num_ldrv;
4222 caddr_t uxferaddr=NULL;
4223 struct pci_dev *pdev;
4224
4225 ustats = NULL; /* avoid compilation warnings */
4226 num_ldrv = 0;
4227
4228 /*
4229 * Make sure only USCSICMD are issued through this interface.
4230 * MIMD application would still fire different command.
4231 */
4232 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
4233 return -EINVAL;
4234 }
4235
4236 /*
4237 * Check and convert a possible MIMD command to NIT command.
4238 * mega_m_to_n() copies the data from the user space, so we do not
4239 * have to do it here.
4240 * NOTE: We will need some user address to copyout the data, therefore
4241 * the inteface layer will also provide us with the required user
4242 * addresses.
4243 */
4244 memset(&uioc, 0, sizeof(nitioctl_t));
4245 if( (rval = mega_m_to_n( (void *)arg, &uioc)) != 0 )
4246 return rval;
4247
4248
4249 switch( uioc.opcode ) {
4250
4251 case GET_DRIVER_VER:
4252 if( put_user(driver_ver, (u32 *)uioc.u_dataaddr) )
4253 return (-EFAULT);
4254
4255 break;
4256
4257 case GET_N_ADAP:
4258 if( put_user(hba_count, (u32 *)uioc.u_dataaddr) )
4259 return (-EFAULT);
4260
4261 /*
4262 * Shucks. MIMD interface returns a positive value for number
4263 * of adapters. TODO: Change it to return 0 when there is no
4264 * applicatio using mimd interface.
4265 */
4266 return hba_count;
4267
4268 case GET_ADAP_INFO:
4269
4270 /*
4271 * Which adapter
4272 */
4273 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
4274 return (-ENODEV);
4275
4276 if( copy_to_user(uioc.u_dataaddr, mcontroller+adapno,
4277 sizeof(struct mcontroller)) )
4278 return (-EFAULT);
4279 break;
4280
4281 #if MEGA_HAVE_STATS
4282
4283 case GET_STATS:
4284 /*
4285 * Which adapter
4286 */
4287 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
4288 return (-ENODEV);
4289
4290 adapter = hba_soft_state[adapno];
4291
4292 ustats = (megastat_t *)uioc.u_dataaddr;
4293
4294 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
4295 return (-EFAULT);
4296
4297 /*
4298 * Check for the validity of the logical drive number
4299 */
4300 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
4301
4302 if( copy_to_user(ustats->nreads, adapter->nreads,
4303 num_ldrv*sizeof(u32)) )
4304 return -EFAULT;
4305
4306 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
4307 num_ldrv*sizeof(u32)) )
4308 return -EFAULT;
4309
4310 if( copy_to_user(ustats->nwrites, adapter->nwrites,
4311 num_ldrv*sizeof(u32)) )
4312 return -EFAULT;
4313
4314 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
4315 num_ldrv*sizeof(u32)) )
4316 return -EFAULT;
4317
4318 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
4319 num_ldrv*sizeof(u32)) )
4320 return -EFAULT;
4321
4322 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
4323 num_ldrv*sizeof(u32)) )
4324 return -EFAULT;
4325
4326 return 0;
4327
4328 #endif
4329 case MBOX_CMD:
4330
4331 /*
4332 * Which adapter
4333 */
4334 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
4335 return (-ENODEV);
4336
4337 adapter = hba_soft_state[adapno];
4338
4339 /*
4340 * Deletion of logical drive is a special case. The adapter
4341 * should be quiescent before this command is issued.
4342 */
4343 if( RMBOX(uioc)[0] == FC_DEL_LOGDRV ) {
4344 if ( RMBOX(uioc)[2] == OP_DEL_LOGDRV ) {
4345 /*
4346 * Do we support this feature
4347 */
4348 if( !adapter->support_random_del ) {
4349 printk(KERN_WARNING "megaraid: logdrv ");
4350 printk("delete on non-supporting F/W.\n");
4351
4352 return (-EINVAL);
4353 }
4354
4355 rval = mega_del_logdrv( adapter, RMBOX(uioc)[3] );
4356
4357 if( rval == 0 ) {
4358 memset(&mc, 0, sizeof(megacmd_t));
4359
4360 mc.status = rval;
4361
4362 rval = mega_n_to_m((void *)arg, &mc);
4363 }
4364
4365 return rval;
4366 }
4367 }
4368 /*
4369 * This interface only support the regular passthru commands.
4370 * Reject extended passthru and 64-bit passthru
4371 */
4372 if( RMBOX(uioc)[0] == MEGA_MBOXCMD_PASSTHRU64 ||
4373 RMBOX(uioc)[0] == MEGA_MBOXCMD_EXTPTHRU ) {
4374
4375 printk(KERN_WARNING "megaraid: rejected passthru.\n");
4376
4377 return (-EINVAL);
4378 }
4379
4380 /*
4381 * For all internal commands, the buffer must be allocated in
4382 * <4GB address range
4383 */
4384 pdev = adapter->dev;
4385
4386 /* Is it a passthru command or a DCMD */
4387 if( RMBOX(uioc)[0] == MEGA_MBOXCMD_PASSTHRU ) {
4388 /* Passthru commands */
4389
4390 pthru = adapter->int_pthru;
4391
4392 /*
4393 * The user passthru structure
4394 */
4395 upthru = &uioc.pthru;
4396 memcpy(pthru, (char *)upthru,sizeof(mega_passthru));
4397 /*
4398 * Is there a data transfer; If the data transfer
4399 * length is <= INT_MEMBLK_SZ, usr the buffer
4400 * allocated at the load time. Otherwise, allocate it
4401 * here.
4402 */
4403 if (pthru->dataxferlen) {
4404 if (pthru->dataxferlen > INT_MEMBLK_SZ) {
4405 data = pci_alloc_consistent (
4406 pdev,
4407 pthru->dataxferlen,
4408 &data_dma_hndl );
4409
4410 if (data == NULL) {
4411 return (-ENOMEM);
4412 }
4413 }
4414 else {
4415 data = adapter->int_data;
4416 }
4417
4418 /*
4419 * Save the user address and point the kernel
4420 * address at just allocated memory
4421 */
4422 uxferaddr = (caddr_t) uioc.u_dataaddr;
4423 if (data_dma_hndl)
4424 pthru->dataxferaddr = data_dma_hndl;
4425 else
4426 pthru->dataxferaddr =
4427 adapter->int_data_dma_hndl;
4428 }
4429
4430
4431 /*
4432 * Is data coming down-stream
4433 */
4434 if(pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
4435 /*
4436 * Get the user data
4437 */
4438 if( copy_from_user(data,
4439 (char *)uxferaddr,
4440 pthru->dataxferlen) ) {
4441 rval = (-EFAULT);
4442 goto freedata_and_return;
4443 }
4444 }
4445
4446 memset(&mc, 0, sizeof(megacmd_t));
4447
4448 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4449 mc.xferaddr = (u32)adapter->int_pthru_dma_hndl;
4450
4451 /*
4452 * Issue the command
4453 */
4454 mega_internal_command(adapter, LOCK_INT, &mc, pthru);
4455
4456 rval = mega_n_to_m((void *)arg, &mc);
4457
4458 if( rval ) goto freedata_and_return;
4459
4460
4461 /*
4462 * Is data going up-stream
4463 */
4464 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
4465 if( copy_to_user((char *)uxferaddr,
4466 data, pthru->dataxferlen) ) {
4467 rval = (-EFAULT);
4468 }
4469 }
4470
4471 /*
4472 * Send the request sense data also, irrespective of
4473 * whether the user has asked for it or not.
4474 */
4475 copy_to_user(upthru->reqsensearea,
4476 pthru->reqsensearea, 14);
4477 freedata_and_return:
4478 if (data_dma_hndl) {
4479 pci_free_consistent( pdev, pthru->dataxferlen,
4480 data, data_dma_hndl );
4481 }
4482
4483 return rval;
4484
4485 }
4486 else {
4487 /* DCMD commands */
4488
4489 /*
4490 * Is there a data transfer
4491 */
4492 if( uioc.xferlen ) {
4493 if (uioc.xferlen > INT_MEMBLK_SZ) {
4494 data = pci_alloc_consistent(
4495 pdev,
4496 uioc.xferlen,
4497 &data_dma_hndl );
4498
4499 if (data == NULL)
4500 return (-ENOMEM);
4501 }
4502 else {
4503 data = adapter->int_data;
4504 }
4505 uxferaddr = uioc.u_dataaddr;
4506 }
4507
4508 /*
4509 * Is data coming down-stream
4510 */
4511 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
4512 /*
4513 * Get the user data
4514 */
4515 if( copy_from_user(data,
4516 (char *)((ulong)uxferaddr),
4517 uioc.xferlen) ) {
4518
4519 pci_free_consistent(
4520 pdev, uioc.xferlen,
4521 data, data_dma_hndl );
4522
4523 return (-EFAULT);
4524 }
4525 }
4526
4527 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
4528
4529 if (data_dma_hndl )
4530 mc.xferaddr = (u32)data_dma_hndl;
4531 else
4532 mc.xferaddr = (u32)(adapter->int_data_dma_hndl);
4533
4534 /*
4535 * Issue the command
4536 */
4537 mega_internal_command(adapter, LOCK_INT, &mc, NULL);
4538
4539 rval = mega_n_to_m((void *)arg, &mc);
4540
4541 if( rval ) {
4542 if (data_dma_hndl) {
4543 pci_free_consistent( pdev, uioc.xferlen,
4544 data, data_dma_hndl );
4545 }
4546 return rval;
4547 }
4548
4549 /*
4550 * Is data going up-stream
4551 */
4552 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
4553 if( copy_to_user((char *)uxferaddr,
4554 data, uioc.xferlen) ) {
4555
4556 rval = (-EFAULT);
4557 }
4558 }
4559
4560 if (data_dma_hndl) {
4561 pci_free_consistent( pdev, uioc.xferlen,
4562 data, data_dma_hndl );
4563 }
4564
4565 return rval;
4566 }
4567
4568 default:
4569 return (-EINVAL);
4570 }
4571
4572 return 0;
4573 }
4574
4575 /**
4576 * mega_m_to_n()
4577 * @arg - user address
4578 * @uioc - new ioctl structure
4579 *
4580 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
4581 * structure
4582 *
4583 * Converts the older mimd ioctl structure to newer NIT structure
4584 */
4585 static int
mega_m_to_n(void * arg,nitioctl_t * uioc)4586 mega_m_to_n(void *arg, nitioctl_t *uioc)
4587 {
4588 struct uioctl_t uioc_mimd;
4589 char signature[8] = {0};
4590 u8 opcode;
4591 u8 subopcode;
4592
4593
4594 /*
4595 * check is the application conforms to NIT. We do not have to do much
4596 * in that case.
4597 * We exploit the fact that the signature is stored in the very
4598 * begining of the structure.
4599 */
4600
4601 if( copy_from_user(signature, (char *)arg, 7) )
4602 return (-EFAULT);
4603
4604 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
4605
4606 /*
4607 * NOTE NOTE: The nit ioctl is still under flux because of
4608 * change of mailbox definition, in HPE. No applications yet
4609 * use this interface and let's not have applications use this
4610 * interface till the new specifitions are in place.
4611 */
4612 return -EINVAL;
4613 #if 0
4614 if( copy_from_user(uioc, (char *)arg, sizeof(nitioctl_t)) )
4615 return (-EFAULT);
4616 return 0;
4617 #endif
4618 }
4619
4620 /*
4621 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
4622 *
4623 * Get the user ioctl structure
4624 */
4625 if( copy_from_user(&uioc_mimd, (char *)arg, sizeof(struct uioctl_t)) )
4626 return (-EFAULT);
4627
4628
4629 /*
4630 * Get the opcode and subopcode for the commands
4631 */
4632 opcode = uioc_mimd.ui.fcs.opcode;
4633 subopcode = uioc_mimd.ui.fcs.subopcode;
4634
4635 switch (opcode) {
4636 case 0x82:
4637
4638 switch (subopcode) {
4639
4640 case MEGAIOC_QDRVRVER: /* Query driver version */
4641 uioc->opcode = GET_DRIVER_VER;
4642 uioc->u_dataaddr = uioc_mimd.data;
4643 break;
4644
4645 case MEGAIOC_QNADAP: /* Get # of adapters */
4646 uioc->opcode = GET_N_ADAP;
4647 uioc->u_dataaddr = uioc_mimd.data;
4648 break;
4649
4650 case MEGAIOC_QADAPINFO: /* Get adapter information */
4651 uioc->opcode = GET_ADAP_INFO;
4652 uioc->adapno = uioc_mimd.ui.fcs.adapno;
4653 uioc->u_dataaddr = uioc_mimd.data;
4654 break;
4655
4656 default:
4657 return(-EINVAL);
4658 }
4659
4660 break;
4661
4662
4663 case 0x81:
4664
4665 uioc->opcode = MBOX_CMD;
4666 uioc->adapno = uioc_mimd.ui.fcs.adapno;
4667
4668 memcpy(&uioc->u_mbox, uioc_mimd.mbox, 18);
4669
4670 uioc->xferlen = uioc_mimd.ui.fcs.length;
4671 uioc->u_dataaddr = uioc_mimd.ui.fcs.buffer;
4672
4673 if (uioc_mimd.mbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
4674 memcpy(&uioc->pthru,&uioc_mimd.pthru,
4675 sizeof(mega_passthru));
4676
4677 }
4678
4679 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
4680 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
4681
4682 break;
4683
4684 case 0x80:
4685
4686 uioc->opcode = MBOX_CMD;
4687 uioc->adapno = uioc_mimd.ui.fcs.adapno;
4688
4689 memcpy(&uioc->u_mbox, uioc_mimd.mbox, 18);
4690
4691 /*
4692 * Choose the xferlen bigger of input and output data
4693 */
4694 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
4695 uioc_mimd.outlen : uioc_mimd.inlen;
4696 uioc->u_dataaddr = uioc_mimd.data;
4697
4698 if (uioc_mimd.mbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
4699 memcpy(&uioc->pthru,&uioc_mimd.pthru,
4700 sizeof(mega_passthru));
4701
4702 }
4703
4704 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
4705 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
4706
4707 break;
4708
4709 default:
4710 return (-EINVAL);
4711
4712 }
4713
4714 return 0;
4715 }
4716
4717 /*
4718 * mega_n_to_m()
4719 * @arg - user address
4720 * @mc - mailbox command
4721 *
4722 * Updates the status information to the application, depending on application
4723 * conforms to older mimd ioctl interface or newer NIT ioctl interface
4724 */
4725 static int
mega_n_to_m(void * arg,megacmd_t * mc)4726 mega_n_to_m(void *arg, megacmd_t *mc)
4727 {
4728 megacmd_t *umc;
4729 megacmd_t kmc;
4730 mega_passthru *upthru;
4731 struct uioctl_t *uioc_mimd;
4732 char signature[8] = {0};
4733
4734 /*
4735 * check is the application conforms to NIT.
4736 */
4737 if( copy_from_user(signature, (char *)arg, 7) )
4738 return -EFAULT;
4739
4740 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
4741
4742
4743 /*
4744 * NOTE: The nit ioctl is still under flux because of
4745 * change of mailbox definition, in HPE. No applications yet
4746 * use this interface and let's not have applications use this
4747 * interface till the new specifitions are in place.
4748 */
4749 return -EINVAL;
4750 }
4751 else {
4752 uioc_mimd = (struct uioctl_t *)arg;
4753
4754 if( put_user(mc->status, (u8 *)&uioc_mimd->mbox[17]) ) {
4755 return (-EFAULT);
4756 }
4757
4758 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4759
4760 umc = (megacmd_t *)uioc_mimd->mbox;
4761 if (copy_from_user(&kmc, umc, sizeof(megacmd_t))) {
4762 return -EFAULT;
4763 }
4764 upthru = (mega_passthru *)((ulong)&uioc_mimd->pthru);
4765
4766 if( put_user(mc->status, (u8 *)&upthru->scsistatus) ){
4767 return (-EFAULT);
4768 }
4769 }
4770 }
4771
4772 return 0;
4773 }
4774
4775
4776 static int
megadev_close(struct inode * inode,struct file * filep)4777 megadev_close (struct inode *inode, struct file *filep)
4778 {
4779 MOD_DEC_USE_COUNT;
4780 return 0;
4781 }
4782
4783
4784 /*
4785 * MEGARAID 'FW' commands.
4786 */
4787
4788 /**
4789 * mega_is_bios_enabled()
4790 * @adapter - pointer to our soft state
4791 *
4792 * issue command to find out if the BIOS is enabled for this controller
4793 */
4794 static int
mega_is_bios_enabled(adapter_t * adapter)4795 mega_is_bios_enabled(adapter_t *adapter)
4796 {
4797 unsigned char raw_mbox[sizeof(mbox_t)];
4798 mbox_t *mbox;
4799 int ret;
4800
4801 mbox = (mbox_t *)raw_mbox;
4802
4803 memset(raw_mbox, 0, sizeof(raw_mbox));
4804
4805 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4806
4807 mbox->xferaddr = (u32)adapter->buf_dma_handle;
4808
4809 raw_mbox[0] = IS_BIOS_ENABLED;
4810 raw_mbox[2] = GET_BIOS;
4811
4812
4813 ret = issue_scb_block(adapter, raw_mbox);
4814
4815 return *(char *)adapter->mega_buffer;
4816 }
4817
4818
4819 /**
4820 * mega_enum_raid_scsi()
4821 * @adapter - pointer to our soft state
4822 *
4823 * Find out what channels are RAID/SCSI. This information is used to
4824 * differentiate the virtual channels and physical channels and to support
4825 * ROMB feature and non-disk devices.
4826 */
4827 static void
mega_enum_raid_scsi(adapter_t * adapter)4828 mega_enum_raid_scsi(adapter_t *adapter)
4829 {
4830 unsigned char raw_mbox[sizeof(mbox_t)];
4831 mbox_t *mbox;
4832 int i;
4833
4834 mbox = (mbox_t *)raw_mbox;
4835
4836 memset(raw_mbox, 0, sizeof(raw_mbox));
4837
4838 /*
4839 * issue command to find out what channels are raid/scsi
4840 */
4841 raw_mbox[0] = CHNL_CLASS;
4842 raw_mbox[2] = GET_CHNL_CLASS;
4843
4844 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4845
4846 mbox->xferaddr = (u32)adapter->buf_dma_handle;
4847
4848 /*
4849 * Non-ROMB firware fail this command, so all channels
4850 * must be shown RAID
4851 */
4852 adapter->mega_ch_class = 0xFF;
4853
4854 if(!issue_scb_block(adapter, raw_mbox)) {
4855 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4856
4857 }
4858
4859 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4860 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4861 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4862 i);
4863 }
4864 else {
4865 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4866 i);
4867 }
4868 }
4869
4870 return;
4871 }
4872
4873
4874 /**
4875 * mega_get_boot_drv()
4876 * @adapter - pointer to our soft state
4877 *
4878 * Find out which device is the boot device. Note, any logical drive or any
4879 * phyical device (e.g., a CDROM) can be designated as a boot device.
4880 */
4881 static void
mega_get_boot_drv(adapter_t * adapter)4882 mega_get_boot_drv(adapter_t *adapter)
4883 {
4884 struct private_bios_data *prv_bios_data;
4885 unsigned char raw_mbox[sizeof(mbox_t)];
4886 mbox_t *mbox;
4887 u16 cksum = 0;
4888 u8 *cksum_p;
4889 u8 boot_pdrv;
4890 int i;
4891
4892 mbox = (mbox_t *)raw_mbox;
4893
4894 memset(raw_mbox, 0, sizeof(raw_mbox));
4895
4896 raw_mbox[0] = BIOS_PVT_DATA;
4897 raw_mbox[2] = GET_BIOS_PVT_DATA;
4898
4899 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4900
4901 mbox->xferaddr = (u32)adapter->buf_dma_handle;
4902
4903 adapter->boot_ldrv_enabled = 0;
4904 adapter->boot_ldrv = 0;
4905
4906 adapter->boot_pdrv_enabled = 0;
4907 adapter->boot_pdrv_ch = 0;
4908 adapter->boot_pdrv_tgt = 0;
4909
4910 if(issue_scb_block(adapter, raw_mbox) == 0) {
4911 prv_bios_data =
4912 (struct private_bios_data *)adapter->mega_buffer;
4913
4914 cksum = 0;
4915 cksum_p = (char *)prv_bios_data;
4916 for (i = 0; i < 14; i++ ) {
4917 cksum += (u16)(*cksum_p++);
4918 }
4919
4920 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4921
4922 /*
4923 * If MSB is set, a physical drive is set as boot
4924 * device
4925 */
4926 if( prv_bios_data->boot_drv & 0x80 ) {
4927 adapter->boot_pdrv_enabled = 1;
4928 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4929 adapter->boot_pdrv_ch = boot_pdrv / 16;
4930 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4931 }
4932 else {
4933 adapter->boot_ldrv_enabled = 1;
4934 adapter->boot_ldrv = prv_bios_data->boot_drv;
4935 }
4936 }
4937 }
4938
4939 }
4940
4941 /**
4942 * mega_support_random_del()
4943 * @adapter - pointer to our soft state
4944 *
4945 * Find out if this controller supports random deletion and addition of
4946 * logical drives
4947 */
4948 static int
mega_support_random_del(adapter_t * adapter)4949 mega_support_random_del(adapter_t *adapter)
4950 {
4951 unsigned char raw_mbox[sizeof(mbox_t)];
4952 mbox_t *mbox;
4953 int rval;
4954
4955 mbox = (mbox_t *)raw_mbox;
4956
4957 memset(raw_mbox, 0, sizeof(raw_mbox));
4958
4959 /*
4960 * issue command
4961 */
4962 raw_mbox[0] = FC_DEL_LOGDRV;
4963 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4964
4965 rval = issue_scb_block(adapter, raw_mbox);
4966
4967 return !rval;
4968 }
4969
4970
4971 /**
4972 * mega_support_ext_cdb()
4973 * @adapter - pointer to our soft state
4974 *
4975 * Find out if this firmware support cdblen > 10
4976 */
4977 static int
mega_support_ext_cdb(adapter_t * adapter)4978 mega_support_ext_cdb(adapter_t *adapter)
4979 {
4980 unsigned char raw_mbox[sizeof(mbox_t)];
4981 mbox_t *mbox;
4982 int rval;
4983
4984 mbox = (mbox_t *)raw_mbox;
4985
4986 memset(raw_mbox, 0, sizeof(raw_mbox));
4987 /*
4988 * issue command to find out if controller supports extended CDBs.
4989 */
4990 raw_mbox[0] = 0xA4;
4991 raw_mbox[2] = 0x16;
4992
4993 rval = issue_scb_block(adapter, raw_mbox);
4994
4995 return !rval;
4996 }
4997
4998
4999 /**
5000 * mega_del_logdrv()
5001 * @adapter - pointer to our soft state
5002 * @logdrv - logical drive to be deleted
5003 *
5004 * Delete the specified logical drive. It is the responsibility of the user
5005 * app to let the OS know about this operation.
5006 */
5007 static int
mega_del_logdrv(adapter_t * adapter,int logdrv)5008 mega_del_logdrv(adapter_t *adapter, int logdrv)
5009 {
5010 DECLARE_WAIT_QUEUE_HEAD(wq);
5011 unsigned long flags;
5012 scb_t *scb;
5013 int rval;
5014
5015 ASSERT( !spin_is_locked(adapter->host_lock) );
5016
5017 /*
5018 * Stop sending commands to the controller, queue them internally.
5019 * When deletion is complete, ISR will flush the queue.
5020 */
5021 atomic_set(&adapter->quiescent, 1);
5022
5023 /*
5024 * Wait till all the issued commands are complete and there are no
5025 * commands in the pending queue
5026 */
5027 while( atomic_read(&adapter->pend_cmds) > 0 ) {
5028
5029 sleep_on_timeout( &wq, 1*HZ ); /* sleep for 1s */
5030 }
5031
5032 rval = mega_do_del_logdrv(adapter, logdrv);
5033
5034
5035 spin_lock_irqsave(adapter->host_lock, flags);
5036
5037 /*
5038 * If delete operation was successful, add 0x80 to the logical drive
5039 * ids for commands in the pending queue.
5040 */
5041 if (adapter->read_ldidmap) {
5042 struct list_head *pos;
5043 list_for_each(pos, &adapter->pending_list) {
5044 scb = list_entry(pos, scb_t, list);
5045 if (((mbox_t *)scb->raw_mbox)->logdrv < 0x80 )
5046 ((mbox_t *)scb->raw_mbox)->logdrv += 0x80 ;
5047 }
5048 }
5049
5050 atomic_set(&adapter->quiescent, 0);
5051
5052 mega_runpendq(adapter);
5053
5054 spin_unlock_irqrestore(adapter->host_lock, flags);
5055
5056 return rval;
5057 }
5058
5059
5060 static int
mega_do_del_logdrv(adapter_t * adapter,int logdrv)5061 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
5062 {
5063 int rval;
5064 u8 raw_mbox[sizeof(mbox_t)];
5065
5066 memset(raw_mbox, 0, sizeof(raw_mbox));
5067
5068 raw_mbox[0] = FC_DEL_LOGDRV;
5069 raw_mbox[2] = OP_DEL_LOGDRV;
5070 raw_mbox[3] = logdrv;
5071
5072 /* Issue a blocking command to the card */
5073 rval = issue_scb_block(adapter, raw_mbox);
5074
5075 /* log this event */
5076 if(rval) {
5077 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
5078 return rval;
5079 }
5080
5081 /*
5082 * After deleting first logical drive, the logical drives must be
5083 * addressed by adding 0x80 to the logical drive id.
5084 */
5085 adapter->read_ldidmap = 1;
5086
5087 return rval;
5088 }
5089
5090
5091 /**
5092 * mega_get_max_sgl()
5093 * @adapter - pointer to our soft state
5094 *
5095 * Find out the maximum number of scatter-gather elements supported by this
5096 * version of the firmware
5097 */
5098 static void
mega_get_max_sgl(adapter_t * adapter)5099 mega_get_max_sgl(adapter_t *adapter)
5100 {
5101 unsigned char raw_mbox[sizeof(mbox_t)];
5102 mbox_t *mbox;
5103
5104 mbox = (mbox_t *)raw_mbox;
5105
5106 memset(raw_mbox, 0, sizeof(raw_mbox));
5107
5108 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
5109
5110 mbox->xferaddr = (u32)adapter->buf_dma_handle;
5111
5112 raw_mbox[0] = MAIN_MISC_OPCODE;
5113 raw_mbox[2] = GET_MAX_SG_SUPPORT;
5114
5115
5116 if( issue_scb_block(adapter, raw_mbox) ) {
5117 /*
5118 * f/w does not support this command. Choose the default value
5119 */
5120 adapter->sglen = MIN_SGLIST;
5121 }
5122 else {
5123 adapter->sglen = *((char *)adapter->mega_buffer);
5124
5125 /*
5126 * Make sure this is not more than the resources we are
5127 * planning to allocate
5128 */
5129 if ( adapter->sglen > MAX_SGLIST )
5130 adapter->sglen = MAX_SGLIST;
5131 }
5132
5133 return;
5134 }
5135
5136
5137 /**
5138 * mega_support_cluster()
5139 * @adapter - pointer to our soft state
5140 *
5141 * Find out if this firmware support cluster calls.
5142 */
5143 static int
mega_support_cluster(adapter_t * adapter)5144 mega_support_cluster(adapter_t *adapter)
5145 {
5146 unsigned char raw_mbox[sizeof(mbox_t)];
5147 mbox_t *mbox;
5148
5149 mbox = (mbox_t *)raw_mbox;
5150
5151 memset(raw_mbox, 0, sizeof(raw_mbox));
5152
5153 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
5154
5155 mbox->xferaddr = (u32)adapter->buf_dma_handle;
5156
5157 /*
5158 * Try to get the initiator id. This command will succeed iff the
5159 * clustering is available on this HBA.
5160 */
5161 raw_mbox[0] = MEGA_GET_TARGET_ID;
5162
5163 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
5164
5165 /*
5166 * Cluster support available. Get the initiator target id.
5167 * Tell our id to mid-layer too.
5168 */
5169 adapter->this_id = *(u32 *)adapter->mega_buffer;
5170 adapter->host->this_id = adapter->this_id;
5171
5172 return 1;
5173 }
5174
5175 return 0;
5176 }
5177
5178
5179
5180 /**
5181 * mega_reorder_hosts()
5182 *
5183 * Hack: reorder the scsi hosts in mid-layer so that the controller with the
5184 * boot device on it appears first in the list.
5185 */
5186 static void
mega_reorder_hosts(void)5187 mega_reorder_hosts(void)
5188 {
5189 struct Scsi_Host *shpnt;
5190 struct Scsi_Host *shone;
5191 struct Scsi_Host *shtwo;
5192 adapter_t *boot_host;
5193 int i;
5194
5195 /*
5196 * Find the (first) host which has it's BIOS enabled
5197 */
5198 boot_host = NULL;
5199 for (i = 0; i < MAX_CONTROLLERS; i++) {
5200 if (mega_hbas[i].is_bios_enabled) {
5201 boot_host = mega_hbas[i].hostdata_addr;
5202 break;
5203 }
5204 }
5205
5206 if (!boot_host) {
5207 printk(KERN_NOTICE "megaraid: no BIOS enabled.\n");
5208 return;
5209 }
5210
5211 /*
5212 * Traverse through the list of SCSI hosts for our HBA locations
5213 */
5214 shone = shtwo = NULL;
5215 for (shpnt = scsi_hostlist; shpnt; shpnt = shpnt->next) {
5216 /* Is it one of ours? */
5217 for (i = 0; i < MAX_CONTROLLERS; i++) {
5218 if ((adapter_t *) shpnt->hostdata ==
5219 mega_hbas[i].hostdata_addr) {
5220 /* Does this one has BIOS enabled */
5221 if (mega_hbas[i].hostdata_addr == boot_host) {
5222
5223 /* Are we first */
5224 if (!shtwo) /* Yes! */
5225 return;
5226 else /* :-( */
5227 shone = shpnt;
5228 } else {
5229 if (!shtwo) {
5230 /* were we here before? xchng
5231 * first */
5232 shtwo = shpnt;
5233 }
5234 }
5235 break;
5236 }
5237 }
5238 /*
5239 * Have we got the boot host and one which does not have the
5240 * bios enabled.
5241 */
5242 if (shone && shtwo)
5243 break;
5244 }
5245 if (shone && shtwo) {
5246 mega_swap_hosts (shone, shtwo);
5247 }
5248
5249 return;
5250 }
5251
5252
5253 static void
mega_swap_hosts(struct Scsi_Host * shone,struct Scsi_Host * shtwo)5254 mega_swap_hosts (struct Scsi_Host *shone, struct Scsi_Host *shtwo)
5255 {
5256 struct Scsi_Host *prevtoshtwo;
5257 struct Scsi_Host *prevtoshone;
5258 struct Scsi_Host *save = NULL;
5259
5260 /* Are these two nodes adjacent */
5261 if (shtwo->next == shone) {
5262
5263 if (shtwo == scsi_hostlist && !shone->next) {
5264
5265 /* just two nodes */
5266 scsi_hostlist = shone;
5267 shone->next = shtwo;
5268 shtwo->next = NULL;
5269 } else if (shtwo == scsi_hostlist) {
5270 /* first two nodes of the list */
5271
5272 scsi_hostlist = shone;
5273 shtwo->next = shone->next;
5274 scsi_hostlist->next = shtwo;
5275 } else if (!shone->next) {
5276 /* last two nodes of the list */
5277
5278 prevtoshtwo = scsi_hostlist;
5279
5280 while (prevtoshtwo->next != shtwo)
5281 prevtoshtwo = prevtoshtwo->next;
5282
5283 prevtoshtwo->next = shone;
5284 shone->next = shtwo;
5285 shtwo->next = NULL;
5286 } else {
5287 prevtoshtwo = scsi_hostlist;
5288
5289 while (prevtoshtwo->next != shtwo)
5290 prevtoshtwo = prevtoshtwo->next;
5291
5292 prevtoshtwo->next = shone;
5293 shtwo->next = shone->next;
5294 shone->next = shtwo;
5295 }
5296
5297 } else if (shtwo == scsi_hostlist && !shone->next) {
5298 /* shtwo at head, shone at tail, not adjacent */
5299
5300 prevtoshone = scsi_hostlist;
5301
5302 while (prevtoshone->next != shone)
5303 prevtoshone = prevtoshone->next;
5304
5305 scsi_hostlist = shone;
5306 shone->next = shtwo->next;
5307 prevtoshone->next = shtwo;
5308 shtwo->next = NULL;
5309 } else if (shtwo == scsi_hostlist && shone->next) {
5310 /* shtwo at head, shone is not at tail */
5311
5312 prevtoshone = scsi_hostlist;
5313 while (prevtoshone->next != shone)
5314 prevtoshone = prevtoshone->next;
5315
5316 scsi_hostlist = shone;
5317 prevtoshone->next = shtwo;
5318 save = shtwo->next;
5319 shtwo->next = shone->next;
5320 shone->next = save;
5321 } else if (!shone->next) {
5322 /* shtwo not at head, shone at tail */
5323
5324 prevtoshtwo = scsi_hostlist;
5325 prevtoshone = scsi_hostlist;
5326
5327 while (prevtoshtwo->next != shtwo)
5328 prevtoshtwo = prevtoshtwo->next;
5329 while (prevtoshone->next != shone)
5330 prevtoshone = prevtoshone->next;
5331
5332 prevtoshtwo->next = shone;
5333 shone->next = shtwo->next;
5334 prevtoshone->next = shtwo;
5335 shtwo->next = NULL;
5336
5337 } else {
5338 prevtoshtwo = scsi_hostlist;
5339 prevtoshone = scsi_hostlist;
5340 save = NULL;
5341
5342 while (prevtoshtwo->next != shtwo)
5343 prevtoshtwo = prevtoshtwo->next;
5344 while (prevtoshone->next != shone)
5345 prevtoshone = prevtoshone->next;
5346
5347 prevtoshtwo->next = shone;
5348 save = shone->next;
5349 shone->next = shtwo->next;
5350 prevtoshone->next = shtwo;
5351 shtwo->next = save;
5352 }
5353 return;
5354 }
5355
5356
5357
5358 #ifdef CONFIG_PROC_FS
5359 /**
5360 * mega_adapinq()
5361 * @adapter - pointer to our soft state
5362 * @dma_handle - DMA address of the buffer
5363 *
5364 * Issue internal comamnds while interrupts are available.
5365 * We only issue direct mailbox commands from within the driver. ioctl()
5366 * interface using these routines can issue passthru commands.
5367 */
5368 static int
mega_adapinq(adapter_t * adapter,dma_addr_t dma_handle)5369 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
5370 {
5371 megacmd_t mc;
5372
5373 memset(&mc, 0, sizeof(megacmd_t));
5374
5375 if( adapter->flag & BOARD_40LD ) {
5376 mc.cmd = FC_NEW_CONFIG;
5377 mc.opcode = NC_SUBOP_ENQUIRY3;
5378 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
5379 }
5380 else {
5381 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
5382 }
5383
5384 mc.xferaddr = (u32)dma_handle;
5385
5386 if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
5387 return -1;
5388 }
5389
5390 return 0;
5391 }
5392
5393
5394 /** mega_internal_dev_inquiry()
5395 * @adapter - pointer to our soft state
5396 * @ch - channel for this device
5397 * @tgt - ID of this device
5398 * @buf_dma_handle - DMA address of the buffer
5399 *
5400 * Issue the scsi inquiry for the specified device.
5401 */
5402 static int
mega_internal_dev_inquiry(adapter_t * adapter,u8 ch,u8 tgt,dma_addr_t buf_dma_handle)5403 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
5404 dma_addr_t buf_dma_handle)
5405 {
5406 mega_passthru *pthru;
5407 dma_addr_t pthru_dma_handle;
5408 megacmd_t mc;
5409 int rval;
5410 struct pci_dev *pdev;
5411
5412
5413 /*
5414 * For all internal commands, the buffer must be allocated in <4GB
5415 * address range
5416 */
5417 pdev = adapter->dev;
5418
5419 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
5420 &pthru_dma_handle);
5421
5422 if( pthru == NULL ) {
5423 return -1;
5424 }
5425
5426 pthru->timeout = 2;
5427 pthru->ars = 1;
5428 pthru->reqsenselen = 14;
5429 pthru->islogical = 0;
5430
5431 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
5432
5433 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
5434
5435 pthru->cdblen = 6;
5436
5437 pthru->cdb[0] = INQUIRY;
5438 pthru->cdb[1] = 0;
5439 pthru->cdb[2] = 0;
5440 pthru->cdb[3] = 0;
5441 pthru->cdb[4] = 255;
5442 pthru->cdb[5] = 0;
5443
5444
5445 pthru->dataxferaddr = (u32)buf_dma_handle;
5446 pthru->dataxferlen = 256;
5447
5448 memset(&mc, 0, sizeof(megacmd_t));
5449
5450 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
5451 mc.xferaddr = (u32)pthru_dma_handle;
5452
5453 rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru);
5454
5455 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
5456 pthru_dma_handle);
5457
5458 return rval;
5459 }
5460 #endif // #ifdef CONFIG_PROC_FS
5461
5462
5463 /**
5464 * mega_internal_command()
5465 * @adapter - pointer to our soft state
5466 * @ls - the scope of the exclusion lock.
5467 * @mc - the mailbox command
5468 * @pthru - Passthru structure for DCDB commands
5469 *
5470 * Issue the internal commands in interrupt mode.
5471 * The last argument is the address of the passthru structure if the command
5472 * to be fired is a passthru command
5473 *
5474 * lockscope specifies whether the caller has already acquired the lock. Of
5475 * course, the caller must know which lock we are talking about.
5476 *
5477 * Note: parameter 'pthru' is null for non-passthru commands.
5478 */
5479 static int
mega_internal_command(adapter_t * adapter,lockscope_t ls,megacmd_t * mc,mega_passthru * pthru)5480 mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc,
5481 mega_passthru *pthru )
5482 {
5483 Scsi_Cmnd *scmd;
5484 unsigned long flags = 0;
5485 scb_t *scb;
5486 int rval;
5487
5488 /*
5489 * The internal commands share one command id and hence are
5490 * serialized. This is so because we want to reserve maximum number of
5491 * available command ids for the I/O commands.
5492 */
5493 down(&adapter->int_mtx);
5494
5495 scb = &adapter->int_scb;
5496 memset(scb, 0, sizeof(scb_t));
5497
5498 scmd = &adapter->int_scmd;
5499 memset(scmd, 0, sizeof(Scsi_Cmnd));
5500
5501 scmd->host = adapter->host;
5502 scmd->buffer = (void *)scb;
5503 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
5504
5505 scb->state |= SCB_ACTIVE;
5506 scb->cmd = scmd;
5507
5508 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
5509
5510 /*
5511 * Is it a passthru command
5512 */
5513 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
5514
5515 scb->pthru = pthru;
5516 }
5517
5518 scb->idx = CMDID_INT_CMDS;
5519
5520 scmd->state = 0;
5521
5522 /*
5523 * Get the lock only if the caller has not acquired it already
5524 */
5525 if( ls == LOCK_INT ) spin_lock_irqsave(adapter->host_lock, flags);
5526
5527 megaraid_queue(scmd, mega_internal_done);
5528
5529 if( ls == LOCK_INT ) spin_unlock_irqrestore(adapter->host_lock, flags);
5530
5531 /*
5532 * Wait till this command finishes. Do not use
5533 * wait_event_interruptible(). It causes panic if CTRL-C is hit when
5534 * dumping e.g., physical disk information through /proc interface.
5535 * Catching the return value should solve the issue but for now keep
5536 * the call non-interruptible.
5537 */
5538 #if 0
5539 wait_event_interruptible(adapter->int_waitq, scmd->state);
5540 #endif
5541 wait_event(adapter->int_waitq, scmd->state);
5542
5543 rval = scmd->result;
5544 mc->status = scmd->result;
5545
5546 /*
5547 * Print a debug message for all failed commands. Applications can use
5548 * this information.
5549 */
5550 if( scmd->result && trace_level ) {
5551 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
5552 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
5553 }
5554
5555 up(&adapter->int_mtx);
5556
5557 return rval;
5558 }
5559
5560
5561 /**
5562 * mega_internal_done()
5563 * @scmd - internal scsi command
5564 *
5565 * Callback routine for internal commands.
5566 */
5567 static void
mega_internal_done(Scsi_Cmnd * scmd)5568 mega_internal_done(Scsi_Cmnd *scmd)
5569 {
5570 adapter_t *adapter;
5571
5572 adapter = (adapter_t *)scmd->host->hostdata;
5573
5574 scmd->state = 1; /* thread waiting for its command to complete */
5575
5576 /*
5577 * See comment in mega_internal_command() routine for
5578 * wait_event_interruptible()
5579 */
5580 #if 0
5581 wake_up_interruptible(&adapter->int_waitq);
5582 #endif
5583 wake_up(&adapter->int_waitq);
5584
5585 }
5586
5587 static Scsi_Host_Template driver_template = MEGARAID;
5588
5589 #include "scsi_module.c"
5590
5591 /* vi: set ts=8 sw=8 tw=78: */
5592