1 /*
2 * Adaptec AIC79xx device driver for Linux.
3 *
4 * Copyright (c) 2000-2001 Adaptec Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * substantially similar to the "NO WARRANTY" disclaimer below
15 * ("Disclaimer") and any redistribution must be conditioned upon
16 * including a substantially similar Disclaimer requirement for further
17 * binary redistribution.
18 * 3. Neither the names of the above-listed copyright holders nor the names
19 * of any contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * Alternatively, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2 as published by the Free
24 * Software Foundation.
25 *
26 * NO WARRANTY
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGES.
38 *
39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $
40 *
41 */
42 #ifndef _AIC79XX_LINUX_H_
43 #define _AIC79XX_LINUX_H_
44
45 #include <linux/types.h>
46 #include <linux/blkdev.h>
47 #include <linux/delay.h>
48 #include <linux/ioport.h>
49 #include <linux/pci.h>
50 #include <linux/interrupt.h>
51 #include <linux/module.h>
52 #include <linux/slab.h>
53 #include <asm/byteorder.h>
54 #include <asm/io.h>
55
56 #include <scsi/scsi.h>
57 #include <scsi/scsi_cmnd.h>
58 #include <scsi/scsi_eh.h>
59 #include <scsi/scsi_device.h>
60 #include <scsi/scsi_host.h>
61 #include <scsi/scsi_tcq.h>
62 #include <scsi/scsi_transport.h>
63 #include <scsi/scsi_transport_spi.h>
64
65 /* Core SCSI definitions */
66 #define AIC_LIB_PREFIX ahd
67
68 /* Name space conflict with BSD queue macros */
69 #ifdef LIST_HEAD
70 #undef LIST_HEAD
71 #endif
72
73 #include "cam.h"
74 #include "queue.h"
75 #include "scsi_message.h"
76 #include "scsi_iu.h"
77 #include "aiclib.h"
78
79 /*********************************** Debugging ********************************/
80 #ifdef CONFIG_AIC79XX_DEBUG_ENABLE
81 #ifdef CONFIG_AIC79XX_DEBUG_MASK
82 #define AHD_DEBUG 1
83 #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK
84 #else
85 /*
86 * Compile in debugging code, but do not enable any printfs.
87 */
88 #define AHD_DEBUG 1
89 #define AHD_DEBUG_OPTS 0
90 #endif
91 /* No debugging code. */
92 #endif
93
94 /********************************** Misc Macros *******************************/
95 #define powerof2(x) ((((x)-1)&(x))==0)
96
97 /************************* Forward Declarations *******************************/
98 struct ahd_softc;
99 typedef struct pci_dev *ahd_dev_softc_t;
100 typedef struct scsi_cmnd *ahd_io_ctx_t;
101
102 /******************************* Byte Order ***********************************/
103 #define ahd_htobe16(x) cpu_to_be16(x)
104 #define ahd_htobe32(x) cpu_to_be32(x)
105 #define ahd_htobe64(x) cpu_to_be64(x)
106 #define ahd_htole16(x) cpu_to_le16(x)
107 #define ahd_htole32(x) cpu_to_le32(x)
108 #define ahd_htole64(x) cpu_to_le64(x)
109
110 #define ahd_be16toh(x) be16_to_cpu(x)
111 #define ahd_be32toh(x) be32_to_cpu(x)
112 #define ahd_be64toh(x) be64_to_cpu(x)
113 #define ahd_le16toh(x) le16_to_cpu(x)
114 #define ahd_le32toh(x) le32_to_cpu(x)
115 #define ahd_le64toh(x) le64_to_cpu(x)
116
117 /************************* Configuration Data *********************************/
118 extern uint32_t aic79xx_allow_memio;
119 extern struct scsi_host_template aic79xx_driver_template;
120
121 /***************************** Bus Space/DMA **********************************/
122
123 typedef uint32_t bus_size_t;
124
125 typedef enum {
126 BUS_SPACE_MEMIO,
127 BUS_SPACE_PIO
128 } bus_space_tag_t;
129
130 typedef union {
131 u_long ioport;
132 volatile uint8_t __iomem *maddr;
133 } bus_space_handle_t;
134
135 typedef struct bus_dma_segment
136 {
137 dma_addr_t ds_addr;
138 bus_size_t ds_len;
139 } bus_dma_segment_t;
140
141 struct ahd_linux_dma_tag
142 {
143 bus_size_t alignment;
144 bus_size_t boundary;
145 bus_size_t maxsize;
146 };
147 typedef struct ahd_linux_dma_tag* bus_dma_tag_t;
148
149 typedef dma_addr_t bus_dmamap_t;
150
151 typedef int bus_dma_filter_t(void*, dma_addr_t);
152 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
153
154 #define BUS_DMA_WAITOK 0x0
155 #define BUS_DMA_NOWAIT 0x1
156 #define BUS_DMA_ALLOCNOW 0x2
157 #define BUS_DMA_LOAD_SEGS 0x4 /*
158 * Argument is an S/G list not
159 * a single buffer.
160 */
161
162 #define BUS_SPACE_MAXADDR 0xFFFFFFFF
163 #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
164 #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
165
166 int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/,
167 bus_size_t /*alignment*/, bus_size_t /*boundary*/,
168 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
169 bus_dma_filter_t*/*filter*/, void */*filterarg*/,
170 bus_size_t /*maxsize*/, int /*nsegments*/,
171 bus_size_t /*maxsegsz*/, int /*flags*/,
172 bus_dma_tag_t */*dma_tagp*/);
173
174 void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);
175
176 int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
177 void** /*vaddr*/, int /*flags*/,
178 bus_dmamap_t* /*mapp*/);
179
180 void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
181 void* /*vaddr*/, bus_dmamap_t /*map*/);
182
183 void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
184 bus_dmamap_t /*map*/);
185
186 int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/,
187 bus_dmamap_t /*map*/, void * /*buf*/,
188 bus_size_t /*buflen*/, bus_dmamap_callback_t *,
189 void */*callback_arg*/, int /*flags*/);
190
191 int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);
192
193 /*
194 * Operations performed by ahd_dmamap_sync().
195 */
196 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
197 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
198 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
199 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
200
201 /*
202 * XXX
203 * ahd_dmamap_sync is only used on buffers allocated with
204 * the pci_alloc_consistent() API. Although I'm not sure how
205 * this works on architectures with a write buffer, Linux does
206 * not have an API to sync "coherent" memory. Perhaps we need
207 * to do an mb()?
208 */
209 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
210
211 /************************** Timer DataStructures ******************************/
212 typedef struct timer_list ahd_timer_t;
213
214 /********************************** Includes **********************************/
215 #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
216 #define AIC_DEBUG_REGISTERS 1
217 #else
218 #define AIC_DEBUG_REGISTERS 0
219 #endif
220 #include "aic79xx.h"
221
222 /***************************** Timer Facilities *******************************/
223 #define ahd_timer_init init_timer
224 #define ahd_timer_stop del_timer_sync
225
226 /***************************** SMP support ************************************/
227 #include <linux/spinlock.h>
228
229 #define AIC79XX_DRIVER_VERSION "3.0"
230
231 /*************************** Device Data Structures ***************************/
232 /*
233 * A per probed device structure used to deal with some error recovery
234 * scenarios that the Linux mid-layer code just doesn't know how to
235 * handle. The structure allocated for a device only becomes persistent
236 * after a successfully completed inquiry command to the target when
237 * that inquiry data indicates a lun is present.
238 */
239
240 typedef enum {
241 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
242 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
243 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
244 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
245 } ahd_linux_dev_flags;
246
247 struct ahd_linux_device {
248 TAILQ_ENTRY(ahd_linux_device) links;
249
250 /*
251 * The number of transactions currently
252 * queued to the device.
253 */
254 int active;
255
256 /*
257 * The currently allowed number of
258 * transactions that can be queued to
259 * the device. Must be signed for
260 * conversion from tagged to untagged
261 * mode where the device may have more
262 * than one outstanding active transaction.
263 */
264 int openings;
265
266 /*
267 * A positive count indicates that this
268 * device's queue is halted.
269 */
270 u_int qfrozen;
271
272 /*
273 * Cumulative command counter.
274 */
275 u_long commands_issued;
276
277 /*
278 * The number of tagged transactions when
279 * running at our current opening level
280 * that have been successfully received by
281 * this device since the last QUEUE FULL.
282 */
283 u_int tag_success_count;
284 #define AHD_TAG_SUCCESS_INTERVAL 50
285
286 ahd_linux_dev_flags flags;
287
288 /*
289 * Per device timer.
290 */
291 struct timer_list timer;
292
293 /*
294 * The high limit for the tags variable.
295 */
296 u_int maxtags;
297
298 /*
299 * The computed number of tags outstanding
300 * at the time of the last QUEUE FULL event.
301 */
302 u_int tags_on_last_queuefull;
303
304 /*
305 * How many times we have seen a queue full
306 * with the same number of tags. This is used
307 * to stop our adaptive queue depth algorithm
308 * on devices with a fixed number of tags.
309 */
310 u_int last_queuefull_same_count;
311 #define AHD_LOCK_TAGS_COUNT 50
312
313 /*
314 * How many transactions have been queued
315 * without the device going idle. We use
316 * this statistic to determine when to issue
317 * an ordered tag to prevent transaction
318 * starvation. This statistic is only updated
319 * if the AHD_DEV_PERIODIC_OTAG flag is set
320 * on this device.
321 */
322 u_int commands_since_idle_or_otag;
323 #define AHD_OTAG_THRESH 500
324 };
325
326 /********************* Definitions Required by the Core ***********************/
327 /*
328 * Number of SG segments we require. So long as the S/G segments for
329 * a particular transaction are allocated in a physically contiguous
330 * manner and are allocated below 4GB, the number of S/G segments is
331 * unrestricted.
332 */
333 #define AHD_NSEG 128
334
335 /*
336 * Per-SCB OSM storage.
337 */
338 struct scb_platform_data {
339 struct ahd_linux_device *dev;
340 dma_addr_t buf_busaddr;
341 uint32_t xfer_len;
342 uint32_t sense_resid; /* Auto-Sense residual */
343 };
344
345 /*
346 * Define a structure used for each host adapter. All members are
347 * aligned on a boundary >= the size of the member to honor the
348 * alignment restrictions of the various platforms supported by
349 * this driver.
350 */
351 struct ahd_platform_data {
352 /*
353 * Fields accessed from interrupt context.
354 */
355 struct scsi_target *starget[AHD_NUM_TARGETS];
356
357 spinlock_t spin_lock;
358 struct completion *eh_done;
359 struct Scsi_Host *host; /* pointer to scsi host */
360 #define AHD_LINUX_NOIRQ ((uint32_t)~0)
361 uint32_t irq; /* IRQ for this adapter */
362 uint32_t bios_address;
363 resource_size_t mem_busaddr; /* Mem Base Addr */
364 };
365
366 void ahd_delay(long);
367
368 /***************************** Low Level I/O **********************************/
369 uint8_t ahd_inb(struct ahd_softc * ahd, long port);
370 void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
371 void ahd_outw_atomic(struct ahd_softc * ahd,
372 long port, uint16_t val);
373 void ahd_outsb(struct ahd_softc * ahd, long port,
374 uint8_t *, int count);
375 void ahd_insb(struct ahd_softc * ahd, long port,
376 uint8_t *, int count);
377
378 /**************************** Initialization **********************************/
379 int ahd_linux_register_host(struct ahd_softc *,
380 struct scsi_host_template *);
381
382 /*************************** Pretty Printing **********************************/
383 struct info_str {
384 char *buffer;
385 int length;
386 off_t offset;
387 int pos;
388 };
389
390 /******************************** Locking *************************************/
391 static inline void
ahd_lockinit(struct ahd_softc * ahd)392 ahd_lockinit(struct ahd_softc *ahd)
393 {
394 spin_lock_init(&ahd->platform_data->spin_lock);
395 }
396
397 static inline void
ahd_lock(struct ahd_softc * ahd,unsigned long * flags)398 ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
399 {
400 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
401 }
402
403 static inline void
ahd_unlock(struct ahd_softc * ahd,unsigned long * flags)404 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
405 {
406 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
407 }
408
409 /******************************* PCI Definitions ******************************/
410 /*
411 * PCIM_xxx: mask to locate subfield in register
412 * PCIR_xxx: config register offset
413 * PCIC_xxx: device class
414 * PCIS_xxx: device subclass
415 * PCIP_xxx: device programming interface
416 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
417 * PCID_xxx: device ID
418 */
419 #define PCIR_DEVVENDOR 0x00
420 #define PCIR_VENDOR 0x00
421 #define PCIR_DEVICE 0x02
422 #define PCIR_COMMAND 0x04
423 #define PCIM_CMD_PORTEN 0x0001
424 #define PCIM_CMD_MEMEN 0x0002
425 #define PCIM_CMD_BUSMASTEREN 0x0004
426 #define PCIM_CMD_MWRICEN 0x0010
427 #define PCIM_CMD_PERRESPEN 0x0040
428 #define PCIM_CMD_SERRESPEN 0x0100
429 #define PCIR_STATUS 0x06
430 #define PCIR_REVID 0x08
431 #define PCIR_PROGIF 0x09
432 #define PCIR_SUBCLASS 0x0a
433 #define PCIR_CLASS 0x0b
434 #define PCIR_CACHELNSZ 0x0c
435 #define PCIR_LATTIMER 0x0d
436 #define PCIR_HEADERTYPE 0x0e
437 #define PCIM_MFDEV 0x80
438 #define PCIR_BIST 0x0f
439 #define PCIR_CAP_PTR 0x34
440
441 /* config registers for header type 0 devices */
442 #define PCIR_MAPS 0x10
443 #define PCIR_SUBVEND_0 0x2c
444 #define PCIR_SUBDEV_0 0x2e
445
446 /****************************** PCI-X definitions *****************************/
447 #define PCIXR_COMMAND 0x96
448 #define PCIXR_DEVADDR 0x98
449 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */
450 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */
451 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */
452 #define PCIXR_STATUS 0x9A
453 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */
454 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */
455 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */
456 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */
457 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */
458 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */
459 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */
460 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */
461 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */
462
463 typedef enum
464 {
465 AHD_POWER_STATE_D0,
466 AHD_POWER_STATE_D1,
467 AHD_POWER_STATE_D2,
468 AHD_POWER_STATE_D3
469 } ahd_power_state;
470
471 void ahd_power_state_change(struct ahd_softc *ahd,
472 ahd_power_state new_state);
473
474 /******************************* PCI Routines *********************************/
475 int ahd_linux_pci_init(void);
476 void ahd_linux_pci_exit(void);
477 int ahd_pci_map_registers(struct ahd_softc *ahd);
478 int ahd_pci_map_int(struct ahd_softc *ahd);
479
480 uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
481 int reg, int width);
482 void ahd_pci_write_config(ahd_dev_softc_t pci,
483 int reg, uint32_t value,
484 int width);
485
486 static inline int ahd_get_pci_function(ahd_dev_softc_t);
487 static inline int
ahd_get_pci_function(ahd_dev_softc_t pci)488 ahd_get_pci_function(ahd_dev_softc_t pci)
489 {
490 return (PCI_FUNC(pci->devfn));
491 }
492
493 static inline int ahd_get_pci_slot(ahd_dev_softc_t);
494 static inline int
ahd_get_pci_slot(ahd_dev_softc_t pci)495 ahd_get_pci_slot(ahd_dev_softc_t pci)
496 {
497 return (PCI_SLOT(pci->devfn));
498 }
499
500 static inline int ahd_get_pci_bus(ahd_dev_softc_t);
501 static inline int
ahd_get_pci_bus(ahd_dev_softc_t pci)502 ahd_get_pci_bus(ahd_dev_softc_t pci)
503 {
504 return (pci->bus->number);
505 }
506
507 static inline void ahd_flush_device_writes(struct ahd_softc *);
508 static inline void
ahd_flush_device_writes(struct ahd_softc * ahd)509 ahd_flush_device_writes(struct ahd_softc *ahd)
510 {
511 /* XXX Is this sufficient for all architectures??? */
512 ahd_inb(ahd, INTSTAT);
513 }
514
515 /**************************** Proc FS Support *********************************/
516 int ahd_linux_proc_info(struct Scsi_Host *, char *, char **,
517 off_t, int, int);
518
519 /*********************** Transaction Access Wrappers **************************/
520 static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
521 static inline void ahd_set_transaction_status(struct scb *, uint32_t);
522 static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
523 static inline void ahd_set_scsi_status(struct scb *, uint32_t);
524 static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd);
525 static inline uint32_t ahd_get_transaction_status(struct scb *);
526 static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd);
527 static inline uint32_t ahd_get_scsi_status(struct scb *);
528 static inline void ahd_set_transaction_tag(struct scb *, int, u_int);
529 static inline u_long ahd_get_transfer_length(struct scb *);
530 static inline int ahd_get_transfer_dir(struct scb *);
531 static inline void ahd_set_residual(struct scb *, u_long);
532 static inline void ahd_set_sense_residual(struct scb *scb, u_long resid);
533 static inline u_long ahd_get_residual(struct scb *);
534 static inline u_long ahd_get_sense_residual(struct scb *);
535 static inline int ahd_perform_autosense(struct scb *);
536 static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,
537 struct scb *);
538 static inline void ahd_notify_xfer_settings_change(struct ahd_softc *,
539 struct ahd_devinfo *);
540 static inline void ahd_platform_scb_free(struct ahd_softc *ahd,
541 struct scb *scb);
542 static inline void ahd_freeze_scb(struct scb *scb);
543
544 static inline
ahd_cmd_set_transaction_status(struct scsi_cmnd * cmd,uint32_t status)545 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
546 {
547 cmd->result &= ~(CAM_STATUS_MASK << 16);
548 cmd->result |= status << 16;
549 }
550
551 static inline
ahd_set_transaction_status(struct scb * scb,uint32_t status)552 void ahd_set_transaction_status(struct scb *scb, uint32_t status)
553 {
554 ahd_cmd_set_transaction_status(scb->io_ctx,status);
555 }
556
557 static inline
ahd_cmd_set_scsi_status(struct scsi_cmnd * cmd,uint32_t status)558 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
559 {
560 cmd->result &= ~0xFFFF;
561 cmd->result |= status;
562 }
563
564 static inline
ahd_set_scsi_status(struct scb * scb,uint32_t status)565 void ahd_set_scsi_status(struct scb *scb, uint32_t status)
566 {
567 ahd_cmd_set_scsi_status(scb->io_ctx, status);
568 }
569
570 static inline
ahd_cmd_get_transaction_status(struct scsi_cmnd * cmd)571 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd)
572 {
573 return ((cmd->result >> 16) & CAM_STATUS_MASK);
574 }
575
576 static inline
ahd_get_transaction_status(struct scb * scb)577 uint32_t ahd_get_transaction_status(struct scb *scb)
578 {
579 return (ahd_cmd_get_transaction_status(scb->io_ctx));
580 }
581
582 static inline
ahd_cmd_get_scsi_status(struct scsi_cmnd * cmd)583 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd)
584 {
585 return (cmd->result & 0xFFFF);
586 }
587
588 static inline
ahd_get_scsi_status(struct scb * scb)589 uint32_t ahd_get_scsi_status(struct scb *scb)
590 {
591 return (ahd_cmd_get_scsi_status(scb->io_ctx));
592 }
593
594 static inline
ahd_set_transaction_tag(struct scb * scb,int enabled,u_int type)595 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
596 {
597 /*
598 * Nothing to do for linux as the incoming transaction
599 * has no concept of tag/non tagged, etc.
600 */
601 }
602
603 static inline
ahd_get_transfer_length(struct scb * scb)604 u_long ahd_get_transfer_length(struct scb *scb)
605 {
606 return (scb->platform_data->xfer_len);
607 }
608
609 static inline
ahd_get_transfer_dir(struct scb * scb)610 int ahd_get_transfer_dir(struct scb *scb)
611 {
612 return (scb->io_ctx->sc_data_direction);
613 }
614
615 static inline
ahd_set_residual(struct scb * scb,u_long resid)616 void ahd_set_residual(struct scb *scb, u_long resid)
617 {
618 scsi_set_resid(scb->io_ctx, resid);
619 }
620
621 static inline
ahd_set_sense_residual(struct scb * scb,u_long resid)622 void ahd_set_sense_residual(struct scb *scb, u_long resid)
623 {
624 scb->platform_data->sense_resid = resid;
625 }
626
627 static inline
ahd_get_residual(struct scb * scb)628 u_long ahd_get_residual(struct scb *scb)
629 {
630 return scsi_get_resid(scb->io_ctx);
631 }
632
633 static inline
ahd_get_sense_residual(struct scb * scb)634 u_long ahd_get_sense_residual(struct scb *scb)
635 {
636 return (scb->platform_data->sense_resid);
637 }
638
639 static inline
ahd_perform_autosense(struct scb * scb)640 int ahd_perform_autosense(struct scb *scb)
641 {
642 /*
643 * We always perform autosense in Linux.
644 * On other platforms this is set on a
645 * per-transaction basis.
646 */
647 return (1);
648 }
649
650 static inline uint32_t
ahd_get_sense_bufsize(struct ahd_softc * ahd,struct scb * scb)651 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
652 {
653 return (sizeof(struct scsi_sense_data));
654 }
655
656 static inline void
ahd_notify_xfer_settings_change(struct ahd_softc * ahd,struct ahd_devinfo * devinfo)657 ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
658 struct ahd_devinfo *devinfo)
659 {
660 /* Nothing to do here for linux */
661 }
662
663 static inline void
ahd_platform_scb_free(struct ahd_softc * ahd,struct scb * scb)664 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
665 {
666 ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
667 }
668
669 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
670 void ahd_platform_free(struct ahd_softc *ahd);
671 void ahd_platform_init(struct ahd_softc *ahd);
672 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
673
674 static inline void
ahd_freeze_scb(struct scb * scb)675 ahd_freeze_scb(struct scb *scb)
676 {
677 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
678 scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
679 scb->platform_data->dev->qfrozen++;
680 }
681 }
682
683 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
684 struct ahd_devinfo *devinfo, ahd_queue_alg);
685 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
686 char channel, int lun, u_int tag,
687 role_t role, uint32_t status);
688 irqreturn_t
689 ahd_linux_isr(int irq, void *dev_id);
690 void ahd_done(struct ahd_softc*, struct scb*);
691 void ahd_send_async(struct ahd_softc *, char channel,
692 u_int target, u_int lun, ac_code);
693 void ahd_print_path(struct ahd_softc *, struct scb *);
694
695 #ifdef CONFIG_PCI
696 #define AHD_PCI_CONFIG 1
697 #else
698 #define AHD_PCI_CONFIG 0
699 #endif
700 #define bootverbose aic79xx_verbose
701 extern uint32_t aic79xx_verbose;
702
703 #endif /* _AIC79XX_LINUX_H_ */
704