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