Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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#137 $ |
| 40 | * |
| 41 | */ |
| 42 | #ifndef _AIC79XX_LINUX_H_ |
| 43 | #define _AIC79XX_LINUX_H_ |
| 44 | |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 45 | #include <linux/config.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/types.h> |
| 47 | #include <linux/blkdev.h> |
| 48 | #include <linux/delay.h> |
| 49 | #include <linux/ioport.h> |
| 50 | #include <linux/pci.h> |
| 51 | #include <linux/smp_lock.h> |
| 52 | #include <linux/version.h> |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 53 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <linux/module.h> |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 55 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <asm/byteorder.h> |
| 57 | #include <asm/io.h> |
| 58 | |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 59 | #include <scsi/scsi.h> |
| 60 | #include <scsi/scsi_cmnd.h> |
| 61 | #include <scsi/scsi_eh.h> |
| 62 | #include <scsi/scsi_device.h> |
| 63 | #include <scsi/scsi_host.h> |
| 64 | #include <scsi/scsi_tcq.h> |
| 65 | #include <scsi/scsi_transport.h> |
| 66 | #include <scsi/scsi_transport_spi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | /* Core SCSI definitions */ |
| 69 | #define AIC_LIB_PREFIX ahd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
| 71 | /* Name space conflict with BSD queue macros */ |
| 72 | #ifdef LIST_HEAD |
| 73 | #undef LIST_HEAD |
| 74 | #endif |
| 75 | |
| 76 | #include "cam.h" |
| 77 | #include "queue.h" |
| 78 | #include "scsi_message.h" |
| 79 | #include "scsi_iu.h" |
| 80 | #include "aiclib.h" |
| 81 | |
| 82 | /*********************************** Debugging ********************************/ |
| 83 | #ifdef CONFIG_AIC79XX_DEBUG_ENABLE |
| 84 | #ifdef CONFIG_AIC79XX_DEBUG_MASK |
| 85 | #define AHD_DEBUG 1 |
| 86 | #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK |
| 87 | #else |
| 88 | /* |
| 89 | * Compile in debugging code, but do not enable any printfs. |
| 90 | */ |
| 91 | #define AHD_DEBUG 1 |
| 92 | #define AHD_DEBUG_OPTS 0 |
| 93 | #endif |
| 94 | /* No debugging code. */ |
| 95 | #endif |
| 96 | |
| 97 | /********************************** Misc Macros *******************************/ |
| 98 | #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) |
| 99 | #define powerof2(x) ((((x)-1)&(x))==0) |
| 100 | |
| 101 | /************************* Forward Declarations *******************************/ |
| 102 | struct ahd_softc; |
| 103 | typedef struct pci_dev *ahd_dev_softc_t; |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 104 | typedef struct scsi_cmnd *ahd_io_ctx_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | /******************************* Byte Order ***********************************/ |
| 107 | #define ahd_htobe16(x) cpu_to_be16(x) |
| 108 | #define ahd_htobe32(x) cpu_to_be32(x) |
| 109 | #define ahd_htobe64(x) cpu_to_be64(x) |
| 110 | #define ahd_htole16(x) cpu_to_le16(x) |
| 111 | #define ahd_htole32(x) cpu_to_le32(x) |
| 112 | #define ahd_htole64(x) cpu_to_le64(x) |
| 113 | |
| 114 | #define ahd_be16toh(x) be16_to_cpu(x) |
| 115 | #define ahd_be32toh(x) be32_to_cpu(x) |
| 116 | #define ahd_be64toh(x) be64_to_cpu(x) |
| 117 | #define ahd_le16toh(x) le16_to_cpu(x) |
| 118 | #define ahd_le32toh(x) le32_to_cpu(x) |
| 119 | #define ahd_le64toh(x) le64_to_cpu(x) |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | /************************* Configuration Data *********************************/ |
| 122 | extern uint32_t aic79xx_allow_memio; |
| 123 | extern int aic79xx_detect_complete; |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 124 | extern struct scsi_host_template aic79xx_driver_template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | /***************************** Bus Space/DMA **********************************/ |
| 127 | |
| 128 | typedef uint32_t bus_size_t; |
| 129 | |
| 130 | typedef enum { |
| 131 | BUS_SPACE_MEMIO, |
| 132 | BUS_SPACE_PIO |
| 133 | } bus_space_tag_t; |
| 134 | |
| 135 | typedef union { |
| 136 | u_long ioport; |
| 137 | volatile uint8_t __iomem *maddr; |
| 138 | } bus_space_handle_t; |
| 139 | |
| 140 | typedef struct bus_dma_segment |
| 141 | { |
| 142 | dma_addr_t ds_addr; |
| 143 | bus_size_t ds_len; |
| 144 | } bus_dma_segment_t; |
| 145 | |
| 146 | struct ahd_linux_dma_tag |
| 147 | { |
| 148 | bus_size_t alignment; |
| 149 | bus_size_t boundary; |
| 150 | bus_size_t maxsize; |
| 151 | }; |
| 152 | typedef struct ahd_linux_dma_tag* bus_dma_tag_t; |
| 153 | |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 154 | typedef dma_addr_t bus_dmamap_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | typedef int bus_dma_filter_t(void*, dma_addr_t); |
| 157 | typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); |
| 158 | |
| 159 | #define BUS_DMA_WAITOK 0x0 |
| 160 | #define BUS_DMA_NOWAIT 0x1 |
| 161 | #define BUS_DMA_ALLOCNOW 0x2 |
| 162 | #define BUS_DMA_LOAD_SEGS 0x4 /* |
| 163 | * Argument is an S/G list not |
| 164 | * a single buffer. |
| 165 | */ |
| 166 | |
| 167 | #define BUS_SPACE_MAXADDR 0xFFFFFFFF |
| 168 | #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF |
| 169 | #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF |
| 170 | |
| 171 | int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/, |
| 172 | bus_size_t /*alignment*/, bus_size_t /*boundary*/, |
| 173 | dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, |
| 174 | bus_dma_filter_t*/*filter*/, void */*filterarg*/, |
| 175 | bus_size_t /*maxsize*/, int /*nsegments*/, |
| 176 | bus_size_t /*maxsegsz*/, int /*flags*/, |
| 177 | bus_dma_tag_t */*dma_tagp*/); |
| 178 | |
| 179 | void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/); |
| 180 | |
| 181 | int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/, |
| 182 | void** /*vaddr*/, int /*flags*/, |
| 183 | bus_dmamap_t* /*mapp*/); |
| 184 | |
| 185 | void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/, |
| 186 | void* /*vaddr*/, bus_dmamap_t /*map*/); |
| 187 | |
| 188 | void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/, |
| 189 | bus_dmamap_t /*map*/); |
| 190 | |
| 191 | int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/, |
| 192 | bus_dmamap_t /*map*/, void * /*buf*/, |
| 193 | bus_size_t /*buflen*/, bus_dmamap_callback_t *, |
| 194 | void */*callback_arg*/, int /*flags*/); |
| 195 | |
| 196 | int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t); |
| 197 | |
| 198 | /* |
| 199 | * Operations performed by ahd_dmamap_sync(). |
| 200 | */ |
| 201 | #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ |
| 202 | #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ |
| 203 | #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ |
| 204 | #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ |
| 205 | |
| 206 | /* |
| 207 | * XXX |
| 208 | * ahd_dmamap_sync is only used on buffers allocated with |
| 209 | * the pci_alloc_consistent() API. Although I'm not sure how |
| 210 | * this works on architectures with a write buffer, Linux does |
| 211 | * not have an API to sync "coherent" memory. Perhaps we need |
| 212 | * to do an mb()? |
| 213 | */ |
| 214 | #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op) |
| 215 | |
| 216 | /************************** Timer DataStructures ******************************/ |
| 217 | typedef struct timer_list ahd_timer_t; |
| 218 | |
| 219 | /********************************** Includes **********************************/ |
| 220 | #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT |
| 221 | #define AIC_DEBUG_REGISTERS 1 |
| 222 | #else |
| 223 | #define AIC_DEBUG_REGISTERS 0 |
| 224 | #endif |
| 225 | #include "aic79xx.h" |
| 226 | |
| 227 | /***************************** Timer Facilities *******************************/ |
| 228 | #define ahd_timer_init init_timer |
| 229 | #define ahd_timer_stop del_timer_sync |
| 230 | typedef void ahd_linux_callback_t (u_long); |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 231 | static __inline void ahd_timer_reset(ahd_timer_t *timer, int usec, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | ahd_callback_t *func, void *arg); |
| 233 | static __inline void ahd_scb_timer_reset(struct scb *scb, u_int usec); |
| 234 | |
| 235 | static __inline void |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 236 | ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | { |
| 238 | struct ahd_softc *ahd; |
| 239 | |
| 240 | ahd = (struct ahd_softc *)arg; |
| 241 | del_timer(timer); |
| 242 | timer->data = (u_long)arg; |
| 243 | timer->expires = jiffies + (usec * HZ)/1000000; |
| 244 | timer->function = (ahd_linux_callback_t*)func; |
| 245 | add_timer(timer); |
| 246 | } |
| 247 | |
| 248 | static __inline void |
| 249 | ahd_scb_timer_reset(struct scb *scb, u_int usec) |
| 250 | { |
| 251 | mod_timer(&scb->io_ctx->eh_timeout, jiffies + (usec * HZ)/1000000); |
| 252 | } |
| 253 | |
| 254 | /***************************** SMP support ************************************/ |
| 255 | #include <linux/spinlock.h> |
| 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | #define AHD_SCSI_HAS_HOST_LOCK 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
| 259 | #define AIC79XX_DRIVER_VERSION "1.3.11" |
| 260 | |
| 261 | /**************************** Front End Queues ********************************/ |
| 262 | /* |
| 263 | * Data structure used to cast the Linux struct scsi_cmnd to something |
| 264 | * that allows us to use the queue macros. The linux structure has |
| 265 | * plenty of space to hold the links fields as required by the queue |
| 266 | * macros, but the queue macors require them to have the correct type. |
| 267 | */ |
| 268 | struct ahd_cmd_internal { |
| 269 | /* Area owned by the Linux scsi layer. */ |
| 270 | uint8_t private[offsetof(struct scsi_cmnd, SCp.Status)]; |
| 271 | union { |
| 272 | STAILQ_ENTRY(ahd_cmd) ste; |
| 273 | LIST_ENTRY(ahd_cmd) le; |
| 274 | TAILQ_ENTRY(ahd_cmd) tqe; |
| 275 | } links; |
| 276 | uint32_t end; |
| 277 | }; |
| 278 | |
| 279 | struct ahd_cmd { |
| 280 | union { |
| 281 | struct ahd_cmd_internal icmd; |
| 282 | struct scsi_cmnd scsi_cmd; |
| 283 | } un; |
| 284 | }; |
| 285 | |
| 286 | #define acmd_icmd(cmd) ((cmd)->un.icmd) |
| 287 | #define acmd_scsi_cmd(cmd) ((cmd)->un.scsi_cmd) |
| 288 | #define acmd_links un.icmd.links |
| 289 | |
| 290 | /*************************** Device Data Structures ***************************/ |
| 291 | /* |
| 292 | * A per probed device structure used to deal with some error recovery |
| 293 | * scenarios that the Linux mid-layer code just doesn't know how to |
| 294 | * handle. The structure allocated for a device only becomes persistent |
| 295 | * after a successfully completed inquiry command to the target when |
| 296 | * that inquiry data indicates a lun is present. |
| 297 | */ |
Hannes Reinecke | 60a1321 | 2005-07-22 16:42:28 +0200 | [diff] [blame] | 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | typedef enum { |
| 300 | AHD_DEV_UNCONFIGURED = 0x01, |
| 301 | AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ |
| 302 | AHD_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ |
| 304 | AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ |
| 305 | AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ |
| 306 | AHD_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */ |
| 307 | } ahd_linux_dev_flags; |
| 308 | |
| 309 | struct ahd_linux_target; |
| 310 | struct ahd_linux_device { |
| 311 | TAILQ_ENTRY(ahd_linux_device) links; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | /* |
| 314 | * The number of transactions currently |
| 315 | * queued to the device. |
| 316 | */ |
| 317 | int active; |
| 318 | |
| 319 | /* |
| 320 | * The currently allowed number of |
| 321 | * transactions that can be queued to |
| 322 | * the device. Must be signed for |
| 323 | * conversion from tagged to untagged |
| 324 | * mode where the device may have more |
| 325 | * than one outstanding active transaction. |
| 326 | */ |
| 327 | int openings; |
| 328 | |
| 329 | /* |
| 330 | * A positive count indicates that this |
| 331 | * device's queue is halted. |
| 332 | */ |
| 333 | u_int qfrozen; |
| 334 | |
| 335 | /* |
| 336 | * Cumulative command counter. |
| 337 | */ |
| 338 | u_long commands_issued; |
| 339 | |
| 340 | /* |
| 341 | * The number of tagged transactions when |
| 342 | * running at our current opening level |
| 343 | * that have been successfully received by |
| 344 | * this device since the last QUEUE FULL. |
| 345 | */ |
| 346 | u_int tag_success_count; |
| 347 | #define AHD_TAG_SUCCESS_INTERVAL 50 |
| 348 | |
| 349 | ahd_linux_dev_flags flags; |
| 350 | |
| 351 | /* |
| 352 | * Per device timer. |
| 353 | */ |
| 354 | struct timer_list timer; |
| 355 | |
| 356 | /* |
| 357 | * The high limit for the tags variable. |
| 358 | */ |
| 359 | u_int maxtags; |
| 360 | |
| 361 | /* |
| 362 | * The computed number of tags outstanding |
| 363 | * at the time of the last QUEUE FULL event. |
| 364 | */ |
| 365 | u_int tags_on_last_queuefull; |
| 366 | |
| 367 | /* |
| 368 | * How many times we have seen a queue full |
| 369 | * with the same number of tags. This is used |
| 370 | * to stop our adaptive queue depth algorithm |
| 371 | * on devices with a fixed number of tags. |
| 372 | */ |
| 373 | u_int last_queuefull_same_count; |
| 374 | #define AHD_LOCK_TAGS_COUNT 50 |
| 375 | |
| 376 | /* |
| 377 | * How many transactions have been queued |
| 378 | * without the device going idle. We use |
| 379 | * this statistic to determine when to issue |
| 380 | * an ordered tag to prevent transaction |
| 381 | * starvation. This statistic is only updated |
| 382 | * if the AHD_DEV_PERIODIC_OTAG flag is set |
| 383 | * on this device. |
| 384 | */ |
| 385 | u_int commands_since_idle_or_otag; |
| 386 | #define AHD_OTAG_THRESH 500 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | }; |
| 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | struct ahd_linux_target { |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 390 | struct scsi_device *sdev[AHD_NUM_LUNS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | struct ahd_transinfo last_tinfo; |
| 392 | struct ahd_softc *ahd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | }; |
| 394 | |
| 395 | /********************* Definitions Required by the Core ***********************/ |
| 396 | /* |
| 397 | * Number of SG segments we require. So long as the S/G segments for |
| 398 | * a particular transaction are allocated in a physically contiguous |
| 399 | * manner and are allocated below 4GB, the number of S/G segments is |
| 400 | * unrestricted. |
| 401 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | #define AHD_NSEG 128 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
| 404 | /* |
| 405 | * Per-SCB OSM storage. |
| 406 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | struct scb_platform_data { |
| 408 | struct ahd_linux_device *dev; |
| 409 | dma_addr_t buf_busaddr; |
| 410 | uint32_t xfer_len; |
| 411 | uint32_t sense_resid; /* Auto-Sense residual */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | }; |
| 413 | |
| 414 | /* |
| 415 | * Define a structure used for each host adapter. All members are |
| 416 | * aligned on a boundary >= the size of the member to honor the |
| 417 | * alignment restrictions of the various platforms supported by |
| 418 | * this driver. |
| 419 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | struct ahd_platform_data { |
| 421 | /* |
| 422 | * Fields accessed from interrupt context. |
| 423 | */ |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 424 | struct scsi_target *starget[AHD_NUM_TARGETS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | spinlock_t spin_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | u_int qfrozen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | struct timer_list reset_timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | struct semaphore eh_sem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | struct Scsi_Host *host; /* pointer to scsi host */ |
| 431 | #define AHD_LINUX_NOIRQ ((uint32_t)~0) |
| 432 | uint32_t irq; /* IRQ for this adapter */ |
| 433 | uint32_t bios_address; |
| 434 | uint32_t mem_busaddr; /* Mem Base Addr */ |
| 435 | uint64_t hw_dma_mask; |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 436 | #define AHD_SCB_UP_EH_SEM 0x1 |
| 437 | uint32_t flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | }; |
| 439 | |
| 440 | /************************** OS Utility Wrappers *******************************/ |
| 441 | #define printf printk |
| 442 | #define M_NOWAIT GFP_ATOMIC |
| 443 | #define M_WAITOK 0 |
| 444 | #define malloc(size, type, flags) kmalloc(size, flags) |
| 445 | #define free(ptr, type) kfree(ptr) |
| 446 | |
| 447 | static __inline void ahd_delay(long); |
| 448 | static __inline void |
| 449 | ahd_delay(long usec) |
| 450 | { |
| 451 | /* |
| 452 | * udelay on Linux can have problems for |
| 453 | * multi-millisecond waits. Wait at most |
| 454 | * 1024us per call. |
| 455 | */ |
| 456 | while (usec > 0) { |
| 457 | udelay(usec % 1024); |
| 458 | usec -= 1024; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | |
| 463 | /***************************** Low Level I/O **********************************/ |
| 464 | static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port); |
| 465 | static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port); |
| 466 | static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); |
| 467 | static __inline void ahd_outw_atomic(struct ahd_softc * ahd, |
| 468 | long port, uint16_t val); |
| 469 | static __inline void ahd_outsb(struct ahd_softc * ahd, long port, |
| 470 | uint8_t *, int count); |
| 471 | static __inline void ahd_insb(struct ahd_softc * ahd, long port, |
| 472 | uint8_t *, int count); |
| 473 | |
| 474 | static __inline uint8_t |
| 475 | ahd_inb(struct ahd_softc * ahd, long port) |
| 476 | { |
| 477 | uint8_t x; |
| 478 | |
| 479 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { |
| 480 | x = readb(ahd->bshs[0].maddr + port); |
| 481 | } else { |
| 482 | x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); |
| 483 | } |
| 484 | mb(); |
| 485 | return (x); |
| 486 | } |
| 487 | |
| 488 | static __inline uint16_t |
| 489 | ahd_inw_atomic(struct ahd_softc * ahd, long port) |
| 490 | { |
| 491 | uint8_t x; |
| 492 | |
| 493 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { |
| 494 | x = readw(ahd->bshs[0].maddr + port); |
| 495 | } else { |
| 496 | x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); |
| 497 | } |
| 498 | mb(); |
| 499 | return (x); |
| 500 | } |
| 501 | |
| 502 | static __inline void |
| 503 | ahd_outb(struct ahd_softc * ahd, long port, uint8_t val) |
| 504 | { |
| 505 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { |
| 506 | writeb(val, ahd->bshs[0].maddr + port); |
| 507 | } else { |
| 508 | outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); |
| 509 | } |
| 510 | mb(); |
| 511 | } |
| 512 | |
| 513 | static __inline void |
| 514 | ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val) |
| 515 | { |
| 516 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { |
| 517 | writew(val, ahd->bshs[0].maddr + port); |
| 518 | } else { |
| 519 | outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); |
| 520 | } |
| 521 | mb(); |
| 522 | } |
| 523 | |
| 524 | static __inline void |
| 525 | ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count) |
| 526 | { |
| 527 | int i; |
| 528 | |
| 529 | /* |
| 530 | * There is probably a more efficient way to do this on Linux |
| 531 | * but we don't use this for anything speed critical and this |
| 532 | * should work. |
| 533 | */ |
| 534 | for (i = 0; i < count; i++) |
| 535 | ahd_outb(ahd, port, *array++); |
| 536 | } |
| 537 | |
| 538 | static __inline void |
| 539 | ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count) |
| 540 | { |
| 541 | int i; |
| 542 | |
| 543 | /* |
| 544 | * There is probably a more efficient way to do this on Linux |
| 545 | * but we don't use this for anything speed critical and this |
| 546 | * should work. |
| 547 | */ |
| 548 | for (i = 0; i < count; i++) |
| 549 | *array++ = ahd_inb(ahd, port); |
| 550 | } |
| 551 | |
| 552 | /**************************** Initialization **********************************/ |
| 553 | int ahd_linux_register_host(struct ahd_softc *, |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 554 | struct scsi_host_template *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
| 556 | uint64_t ahd_linux_get_memsize(void); |
| 557 | |
| 558 | /*************************** Pretty Printing **********************************/ |
| 559 | struct info_str { |
| 560 | char *buffer; |
| 561 | int length; |
| 562 | off_t offset; |
| 563 | int pos; |
| 564 | }; |
| 565 | |
| 566 | void ahd_format_transinfo(struct info_str *info, |
| 567 | struct ahd_transinfo *tinfo); |
| 568 | |
| 569 | /******************************** Locking *************************************/ |
| 570 | /* Lock protecting internal data structures */ |
| 571 | static __inline void ahd_lockinit(struct ahd_softc *); |
| 572 | static __inline void ahd_lock(struct ahd_softc *, unsigned long *flags); |
| 573 | static __inline void ahd_unlock(struct ahd_softc *, unsigned long *flags); |
| 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | /* Lock held during ahd_list manipulation and ahd softc frees */ |
| 576 | extern spinlock_t ahd_list_spinlock; |
| 577 | static __inline void ahd_list_lockinit(void); |
| 578 | static __inline void ahd_list_lock(unsigned long *flags); |
| 579 | static __inline void ahd_list_unlock(unsigned long *flags); |
| 580 | |
| 581 | static __inline void |
| 582 | ahd_lockinit(struct ahd_softc *ahd) |
| 583 | { |
| 584 | spin_lock_init(&ahd->platform_data->spin_lock); |
| 585 | } |
| 586 | |
| 587 | static __inline void |
| 588 | ahd_lock(struct ahd_softc *ahd, unsigned long *flags) |
| 589 | { |
| 590 | spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); |
| 591 | } |
| 592 | |
| 593 | static __inline void |
| 594 | ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) |
| 595 | { |
| 596 | spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); |
| 597 | } |
| 598 | |
| 599 | static __inline void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | ahd_list_lockinit(void) |
| 601 | { |
| 602 | spin_lock_init(&ahd_list_spinlock); |
| 603 | } |
| 604 | |
| 605 | static __inline void |
| 606 | ahd_list_lock(unsigned long *flags) |
| 607 | { |
| 608 | spin_lock_irqsave(&ahd_list_spinlock, *flags); |
| 609 | } |
| 610 | |
| 611 | static __inline void |
| 612 | ahd_list_unlock(unsigned long *flags) |
| 613 | { |
| 614 | spin_unlock_irqrestore(&ahd_list_spinlock, *flags); |
| 615 | } |
| 616 | |
| 617 | /******************************* PCI Definitions ******************************/ |
| 618 | /* |
| 619 | * PCIM_xxx: mask to locate subfield in register |
| 620 | * PCIR_xxx: config register offset |
| 621 | * PCIC_xxx: device class |
| 622 | * PCIS_xxx: device subclass |
| 623 | * PCIP_xxx: device programming interface |
| 624 | * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) |
| 625 | * PCID_xxx: device ID |
| 626 | */ |
| 627 | #define PCIR_DEVVENDOR 0x00 |
| 628 | #define PCIR_VENDOR 0x00 |
| 629 | #define PCIR_DEVICE 0x02 |
| 630 | #define PCIR_COMMAND 0x04 |
| 631 | #define PCIM_CMD_PORTEN 0x0001 |
| 632 | #define PCIM_CMD_MEMEN 0x0002 |
| 633 | #define PCIM_CMD_BUSMASTEREN 0x0004 |
| 634 | #define PCIM_CMD_MWRICEN 0x0010 |
| 635 | #define PCIM_CMD_PERRESPEN 0x0040 |
| 636 | #define PCIM_CMD_SERRESPEN 0x0100 |
| 637 | #define PCIR_STATUS 0x06 |
| 638 | #define PCIR_REVID 0x08 |
| 639 | #define PCIR_PROGIF 0x09 |
| 640 | #define PCIR_SUBCLASS 0x0a |
| 641 | #define PCIR_CLASS 0x0b |
| 642 | #define PCIR_CACHELNSZ 0x0c |
| 643 | #define PCIR_LATTIMER 0x0d |
| 644 | #define PCIR_HEADERTYPE 0x0e |
| 645 | #define PCIM_MFDEV 0x80 |
| 646 | #define PCIR_BIST 0x0f |
| 647 | #define PCIR_CAP_PTR 0x34 |
| 648 | |
| 649 | /* config registers for header type 0 devices */ |
| 650 | #define PCIR_MAPS 0x10 |
| 651 | #define PCIR_SUBVEND_0 0x2c |
| 652 | #define PCIR_SUBDEV_0 0x2e |
| 653 | |
| 654 | /****************************** PCI-X definitions *****************************/ |
| 655 | #define PCIXR_COMMAND 0x96 |
| 656 | #define PCIXR_DEVADDR 0x98 |
| 657 | #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ |
| 658 | #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ |
| 659 | #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ |
| 660 | #define PCIXR_STATUS 0x9A |
| 661 | #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ |
| 662 | #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ |
| 663 | #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ |
| 664 | #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ |
| 665 | #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ |
| 666 | #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ |
| 667 | #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ |
| 668 | #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ |
| 669 | #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ |
| 670 | |
| 671 | extern struct pci_driver aic79xx_pci_driver; |
| 672 | |
| 673 | typedef enum |
| 674 | { |
| 675 | AHD_POWER_STATE_D0, |
| 676 | AHD_POWER_STATE_D1, |
| 677 | AHD_POWER_STATE_D2, |
| 678 | AHD_POWER_STATE_D3 |
| 679 | } ahd_power_state; |
| 680 | |
| 681 | void ahd_power_state_change(struct ahd_softc *ahd, |
| 682 | ahd_power_state new_state); |
| 683 | |
| 684 | /******************************* PCI Routines *********************************/ |
| 685 | int ahd_linux_pci_init(void); |
| 686 | void ahd_linux_pci_exit(void); |
| 687 | int ahd_pci_map_registers(struct ahd_softc *ahd); |
| 688 | int ahd_pci_map_int(struct ahd_softc *ahd); |
| 689 | |
| 690 | static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, |
| 691 | int reg, int width); |
| 692 | |
| 693 | static __inline uint32_t |
| 694 | ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width) |
| 695 | { |
| 696 | switch (width) { |
| 697 | case 1: |
| 698 | { |
| 699 | uint8_t retval; |
| 700 | |
| 701 | pci_read_config_byte(pci, reg, &retval); |
| 702 | return (retval); |
| 703 | } |
| 704 | case 2: |
| 705 | { |
| 706 | uint16_t retval; |
| 707 | pci_read_config_word(pci, reg, &retval); |
| 708 | return (retval); |
| 709 | } |
| 710 | case 4: |
| 711 | { |
| 712 | uint32_t retval; |
| 713 | pci_read_config_dword(pci, reg, &retval); |
| 714 | return (retval); |
| 715 | } |
| 716 | default: |
| 717 | panic("ahd_pci_read_config: Read size too big"); |
| 718 | /* NOTREACHED */ |
| 719 | return (0); |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | static __inline void ahd_pci_write_config(ahd_dev_softc_t pci, |
| 724 | int reg, uint32_t value, |
| 725 | int width); |
| 726 | |
| 727 | static __inline void |
| 728 | ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width) |
| 729 | { |
| 730 | switch (width) { |
| 731 | case 1: |
| 732 | pci_write_config_byte(pci, reg, value); |
| 733 | break; |
| 734 | case 2: |
| 735 | pci_write_config_word(pci, reg, value); |
| 736 | break; |
| 737 | case 4: |
| 738 | pci_write_config_dword(pci, reg, value); |
| 739 | break; |
| 740 | default: |
| 741 | panic("ahd_pci_write_config: Write size too big"); |
| 742 | /* NOTREACHED */ |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | static __inline int ahd_get_pci_function(ahd_dev_softc_t); |
| 747 | static __inline int |
| 748 | ahd_get_pci_function(ahd_dev_softc_t pci) |
| 749 | { |
| 750 | return (PCI_FUNC(pci->devfn)); |
| 751 | } |
| 752 | |
| 753 | static __inline int ahd_get_pci_slot(ahd_dev_softc_t); |
| 754 | static __inline int |
| 755 | ahd_get_pci_slot(ahd_dev_softc_t pci) |
| 756 | { |
| 757 | return (PCI_SLOT(pci->devfn)); |
| 758 | } |
| 759 | |
| 760 | static __inline int ahd_get_pci_bus(ahd_dev_softc_t); |
| 761 | static __inline int |
| 762 | ahd_get_pci_bus(ahd_dev_softc_t pci) |
| 763 | { |
| 764 | return (pci->bus->number); |
| 765 | } |
| 766 | |
| 767 | static __inline void ahd_flush_device_writes(struct ahd_softc *); |
| 768 | static __inline void |
| 769 | ahd_flush_device_writes(struct ahd_softc *ahd) |
| 770 | { |
| 771 | /* XXX Is this sufficient for all architectures??? */ |
| 772 | ahd_inb(ahd, INTSTAT); |
| 773 | } |
| 774 | |
| 775 | /**************************** Proc FS Support *********************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | int ahd_linux_proc_info(struct Scsi_Host *, char *, char **, |
| 777 | off_t, int, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | /*********************** Transaction Access Wrappers **************************/ |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 780 | static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | static __inline void ahd_set_transaction_status(struct scb *, uint32_t); |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 782 | static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | static __inline void ahd_set_scsi_status(struct scb *, uint32_t); |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 784 | static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | static __inline uint32_t ahd_get_transaction_status(struct scb *); |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 786 | static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | static __inline uint32_t ahd_get_scsi_status(struct scb *); |
| 788 | static __inline void ahd_set_transaction_tag(struct scb *, int, u_int); |
| 789 | static __inline u_long ahd_get_transfer_length(struct scb *); |
| 790 | static __inline int ahd_get_transfer_dir(struct scb *); |
| 791 | static __inline void ahd_set_residual(struct scb *, u_long); |
| 792 | static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid); |
| 793 | static __inline u_long ahd_get_residual(struct scb *); |
| 794 | static __inline u_long ahd_get_sense_residual(struct scb *); |
| 795 | static __inline int ahd_perform_autosense(struct scb *); |
| 796 | static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, |
| 797 | struct scb *); |
| 798 | static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *, |
| 799 | struct ahd_devinfo *); |
| 800 | static __inline void ahd_platform_scb_free(struct ahd_softc *ahd, |
| 801 | struct scb *scb); |
| 802 | static __inline void ahd_freeze_scb(struct scb *scb); |
| 803 | |
| 804 | static __inline |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 805 | void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | { |
| 807 | cmd->result &= ~(CAM_STATUS_MASK << 16); |
| 808 | cmd->result |= status << 16; |
| 809 | } |
| 810 | |
| 811 | static __inline |
| 812 | void ahd_set_transaction_status(struct scb *scb, uint32_t status) |
| 813 | { |
| 814 | ahd_cmd_set_transaction_status(scb->io_ctx,status); |
| 815 | } |
| 816 | |
| 817 | static __inline |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 818 | void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | { |
| 820 | cmd->result &= ~0xFFFF; |
| 821 | cmd->result |= status; |
| 822 | } |
| 823 | |
| 824 | static __inline |
| 825 | void ahd_set_scsi_status(struct scb *scb, uint32_t status) |
| 826 | { |
| 827 | ahd_cmd_set_scsi_status(scb->io_ctx, status); |
| 828 | } |
| 829 | |
| 830 | static __inline |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 831 | uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | { |
| 833 | return ((cmd->result >> 16) & CAM_STATUS_MASK); |
| 834 | } |
| 835 | |
| 836 | static __inline |
| 837 | uint32_t ahd_get_transaction_status(struct scb *scb) |
| 838 | { |
| 839 | return (ahd_cmd_get_transaction_status(scb->io_ctx)); |
| 840 | } |
| 841 | |
| 842 | static __inline |
Hannes Reinecke | 73a2546 | 2005-07-22 16:44:04 +0200 | [diff] [blame^] | 843 | uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | { |
| 845 | return (cmd->result & 0xFFFF); |
| 846 | } |
| 847 | |
| 848 | static __inline |
| 849 | uint32_t ahd_get_scsi_status(struct scb *scb) |
| 850 | { |
| 851 | return (ahd_cmd_get_scsi_status(scb->io_ctx)); |
| 852 | } |
| 853 | |
| 854 | static __inline |
| 855 | void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) |
| 856 | { |
| 857 | /* |
| 858 | * Nothing to do for linux as the incoming transaction |
| 859 | * has no concept of tag/non tagged, etc. |
| 860 | */ |
| 861 | } |
| 862 | |
| 863 | static __inline |
| 864 | u_long ahd_get_transfer_length(struct scb *scb) |
| 865 | { |
| 866 | return (scb->platform_data->xfer_len); |
| 867 | } |
| 868 | |
| 869 | static __inline |
| 870 | int ahd_get_transfer_dir(struct scb *scb) |
| 871 | { |
| 872 | return (scb->io_ctx->sc_data_direction); |
| 873 | } |
| 874 | |
| 875 | static __inline |
| 876 | void ahd_set_residual(struct scb *scb, u_long resid) |
| 877 | { |
| 878 | scb->io_ctx->resid = resid; |
| 879 | } |
| 880 | |
| 881 | static __inline |
| 882 | void ahd_set_sense_residual(struct scb *scb, u_long resid) |
| 883 | { |
| 884 | scb->platform_data->sense_resid = resid; |
| 885 | } |
| 886 | |
| 887 | static __inline |
| 888 | u_long ahd_get_residual(struct scb *scb) |
| 889 | { |
| 890 | return (scb->io_ctx->resid); |
| 891 | } |
| 892 | |
| 893 | static __inline |
| 894 | u_long ahd_get_sense_residual(struct scb *scb) |
| 895 | { |
| 896 | return (scb->platform_data->sense_resid); |
| 897 | } |
| 898 | |
| 899 | static __inline |
| 900 | int ahd_perform_autosense(struct scb *scb) |
| 901 | { |
| 902 | /* |
| 903 | * We always perform autosense in Linux. |
| 904 | * On other platforms this is set on a |
| 905 | * per-transaction basis. |
| 906 | */ |
| 907 | return (1); |
| 908 | } |
| 909 | |
| 910 | static __inline uint32_t |
| 911 | ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) |
| 912 | { |
| 913 | return (sizeof(struct scsi_sense_data)); |
| 914 | } |
| 915 | |
| 916 | static __inline void |
| 917 | ahd_notify_xfer_settings_change(struct ahd_softc *ahd, |
| 918 | struct ahd_devinfo *devinfo) |
| 919 | { |
| 920 | /* Nothing to do here for linux */ |
| 921 | } |
| 922 | |
| 923 | static __inline void |
| 924 | ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) |
| 925 | { |
| 926 | ahd->flags &= ~AHD_RESOURCE_SHORTAGE; |
| 927 | } |
| 928 | |
| 929 | int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); |
| 930 | void ahd_platform_free(struct ahd_softc *ahd); |
| 931 | void ahd_platform_init(struct ahd_softc *ahd); |
| 932 | void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); |
| 933 | void ahd_freeze_simq(struct ahd_softc *ahd); |
| 934 | void ahd_release_simq(struct ahd_softc *ahd); |
| 935 | |
| 936 | static __inline void |
| 937 | ahd_freeze_scb(struct scb *scb) |
| 938 | { |
| 939 | if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { |
| 940 | scb->io_ctx->result |= CAM_DEV_QFRZN << 16; |
| 941 | scb->platform_data->dev->qfrozen++; |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | void ahd_platform_set_tags(struct ahd_softc *ahd, |
| 946 | struct ahd_devinfo *devinfo, ahd_queue_alg); |
| 947 | int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, |
| 948 | char channel, int lun, u_int tag, |
| 949 | role_t role, uint32_t status); |
| 950 | irqreturn_t |
| 951 | ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs); |
| 952 | void ahd_platform_flushwork(struct ahd_softc *ahd); |
| 953 | int ahd_softc_comp(struct ahd_softc *, struct ahd_softc *); |
| 954 | void ahd_done(struct ahd_softc*, struct scb*); |
| 955 | void ahd_send_async(struct ahd_softc *, char channel, |
| 956 | u_int target, u_int lun, ac_code, void *); |
| 957 | void ahd_print_path(struct ahd_softc *, struct scb *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
| 959 | #ifdef CONFIG_PCI |
| 960 | #define AHD_PCI_CONFIG 1 |
| 961 | #else |
| 962 | #define AHD_PCI_CONFIG 0 |
| 963 | #endif |
| 964 | #define bootverbose aic79xx_verbose |
| 965 | extern uint32_t aic79xx_verbose; |
| 966 | |
| 967 | #endif /* _AIC79XX_LINUX_H_ */ |