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 /******************************** Locking *************************************/ 383 static inline void 384 ahd_lockinit(struct ahd_softc *ahd) 385 { 386 spin_lock_init(&ahd->platform_data->spin_lock); 387 } 388 389 static inline void 390 ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 391 { 392 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 393 } 394 395 static inline void 396 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 397 { 398 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 399 } 400 401 /******************************* PCI Definitions ******************************/ 402 /* 403 * PCIM_xxx: mask to locate subfield in register 404 * PCIR_xxx: config register offset 405 * PCIC_xxx: device class 406 * PCIS_xxx: device subclass 407 * PCIP_xxx: device programming interface 408 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 409 * PCID_xxx: device ID 410 */ 411 #define PCIR_DEVVENDOR 0x00 412 #define PCIR_VENDOR 0x00 413 #define PCIR_DEVICE 0x02 414 #define PCIR_COMMAND 0x04 415 #define PCIM_CMD_PORTEN 0x0001 416 #define PCIM_CMD_MEMEN 0x0002 417 #define PCIM_CMD_BUSMASTEREN 0x0004 418 #define PCIM_CMD_MWRICEN 0x0010 419 #define PCIM_CMD_PERRESPEN 0x0040 420 #define PCIM_CMD_SERRESPEN 0x0100 421 #define PCIR_STATUS 0x06 422 #define PCIR_REVID 0x08 423 #define PCIR_PROGIF 0x09 424 #define PCIR_SUBCLASS 0x0a 425 #define PCIR_CLASS 0x0b 426 #define PCIR_CACHELNSZ 0x0c 427 #define PCIR_LATTIMER 0x0d 428 #define PCIR_HEADERTYPE 0x0e 429 #define PCIM_MFDEV 0x80 430 #define PCIR_BIST 0x0f 431 #define PCIR_CAP_PTR 0x34 432 433 /* config registers for header type 0 devices */ 434 #define PCIR_MAPS 0x10 435 #define PCIR_SUBVEND_0 0x2c 436 #define PCIR_SUBDEV_0 0x2e 437 438 /****************************** PCI-X definitions *****************************/ 439 #define PCIXR_COMMAND 0x96 440 #define PCIXR_DEVADDR 0x98 441 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 442 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 443 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 444 #define PCIXR_STATUS 0x9A 445 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 446 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 447 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 448 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 449 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 450 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 451 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 452 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 453 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 454 455 typedef enum 456 { 457 AHD_POWER_STATE_D0, 458 AHD_POWER_STATE_D1, 459 AHD_POWER_STATE_D2, 460 AHD_POWER_STATE_D3 461 } ahd_power_state; 462 463 void ahd_power_state_change(struct ahd_softc *ahd, 464 ahd_power_state new_state); 465 466 /******************************* PCI Routines *********************************/ 467 int ahd_linux_pci_init(void); 468 void ahd_linux_pci_exit(void); 469 int ahd_pci_map_registers(struct ahd_softc *ahd); 470 int ahd_pci_map_int(struct ahd_softc *ahd); 471 472 uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 473 int reg, int width); 474 void ahd_pci_write_config(ahd_dev_softc_t pci, 475 int reg, uint32_t value, 476 int width); 477 478 static inline int ahd_get_pci_function(ahd_dev_softc_t); 479 static inline int 480 ahd_get_pci_function(ahd_dev_softc_t pci) 481 { 482 return (PCI_FUNC(pci->devfn)); 483 } 484 485 static inline int ahd_get_pci_slot(ahd_dev_softc_t); 486 static inline int 487 ahd_get_pci_slot(ahd_dev_softc_t pci) 488 { 489 return (PCI_SLOT(pci->devfn)); 490 } 491 492 static inline int ahd_get_pci_bus(ahd_dev_softc_t); 493 static inline int 494 ahd_get_pci_bus(ahd_dev_softc_t pci) 495 { 496 return (pci->bus->number); 497 } 498 499 static inline void ahd_flush_device_writes(struct ahd_softc *); 500 static inline void 501 ahd_flush_device_writes(struct ahd_softc *ahd) 502 { 503 /* XXX Is this sufficient for all architectures??? */ 504 ahd_inb(ahd, INTSTAT); 505 } 506 507 /**************************** Proc FS Support *********************************/ 508 int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int); 509 int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *); 510 511 /*********************** Transaction Access Wrappers **************************/ 512 static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 513 static inline void ahd_set_transaction_status(struct scb *, uint32_t); 514 static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 515 static inline void ahd_set_scsi_status(struct scb *, uint32_t); 516 static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 517 static inline uint32_t ahd_get_transaction_status(struct scb *); 518 static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 519 static inline uint32_t ahd_get_scsi_status(struct scb *); 520 static inline void ahd_set_transaction_tag(struct scb *, int, u_int); 521 static inline u_long ahd_get_transfer_length(struct scb *); 522 static inline int ahd_get_transfer_dir(struct scb *); 523 static inline void ahd_set_residual(struct scb *, u_long); 524 static inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 525 static inline u_long ahd_get_residual(struct scb *); 526 static inline u_long ahd_get_sense_residual(struct scb *); 527 static inline int ahd_perform_autosense(struct scb *); 528 static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 529 struct scb *); 530 static inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 531 struct ahd_devinfo *); 532 static inline void ahd_platform_scb_free(struct ahd_softc *ahd, 533 struct scb *scb); 534 static inline void ahd_freeze_scb(struct scb *scb); 535 536 static inline 537 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 538 { 539 cmd->result &= ~(CAM_STATUS_MASK << 16); 540 cmd->result |= status << 16; 541 } 542 543 static inline 544 void ahd_set_transaction_status(struct scb *scb, uint32_t status) 545 { 546 ahd_cmd_set_transaction_status(scb->io_ctx,status); 547 } 548 549 static inline 550 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 551 { 552 cmd->result &= ~0xFFFF; 553 cmd->result |= status; 554 } 555 556 static inline 557 void ahd_set_scsi_status(struct scb *scb, uint32_t status) 558 { 559 ahd_cmd_set_scsi_status(scb->io_ctx, status); 560 } 561 562 static inline 563 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 564 { 565 return ((cmd->result >> 16) & CAM_STATUS_MASK); 566 } 567 568 static inline 569 uint32_t ahd_get_transaction_status(struct scb *scb) 570 { 571 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 572 } 573 574 static inline 575 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 576 { 577 return (cmd->result & 0xFFFF); 578 } 579 580 static inline 581 uint32_t ahd_get_scsi_status(struct scb *scb) 582 { 583 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 584 } 585 586 static inline 587 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 588 { 589 /* 590 * Nothing to do for linux as the incoming transaction 591 * has no concept of tag/non tagged, etc. 592 */ 593 } 594 595 static inline 596 u_long ahd_get_transfer_length(struct scb *scb) 597 { 598 return (scb->platform_data->xfer_len); 599 } 600 601 static inline 602 int ahd_get_transfer_dir(struct scb *scb) 603 { 604 return (scb->io_ctx->sc_data_direction); 605 } 606 607 static inline 608 void ahd_set_residual(struct scb *scb, u_long resid) 609 { 610 scsi_set_resid(scb->io_ctx, resid); 611 } 612 613 static inline 614 void ahd_set_sense_residual(struct scb *scb, u_long resid) 615 { 616 scb->platform_data->sense_resid = resid; 617 } 618 619 static inline 620 u_long ahd_get_residual(struct scb *scb) 621 { 622 return scsi_get_resid(scb->io_ctx); 623 } 624 625 static inline 626 u_long ahd_get_sense_residual(struct scb *scb) 627 { 628 return (scb->platform_data->sense_resid); 629 } 630 631 static inline 632 int ahd_perform_autosense(struct scb *scb) 633 { 634 /* 635 * We always perform autosense in Linux. 636 * On other platforms this is set on a 637 * per-transaction basis. 638 */ 639 return (1); 640 } 641 642 static inline uint32_t 643 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 644 { 645 return (sizeof(struct scsi_sense_data)); 646 } 647 648 static inline void 649 ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 650 struct ahd_devinfo *devinfo) 651 { 652 /* Nothing to do here for linux */ 653 } 654 655 static inline void 656 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 657 { 658 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 659 } 660 661 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 662 void ahd_platform_free(struct ahd_softc *ahd); 663 void ahd_platform_init(struct ahd_softc *ahd); 664 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 665 666 static inline void 667 ahd_freeze_scb(struct scb *scb) 668 { 669 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 670 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 671 scb->platform_data->dev->qfrozen++; 672 } 673 } 674 675 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 676 struct ahd_devinfo *devinfo, ahd_queue_alg); 677 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 678 char channel, int lun, u_int tag, 679 role_t role, uint32_t status); 680 irqreturn_t 681 ahd_linux_isr(int irq, void *dev_id); 682 void ahd_done(struct ahd_softc*, struct scb*); 683 void ahd_send_async(struct ahd_softc *, char channel, 684 u_int target, u_int lun, ac_code); 685 void ahd_print_path(struct ahd_softc *, struct scb *); 686 687 #ifdef CONFIG_PCI 688 #define AHD_PCI_CONFIG 1 689 #else 690 #define AHD_PCI_CONFIG 0 691 #endif 692 #define bootverbose aic79xx_verbose 693 extern uint32_t aic79xx_verbose; 694 695 #endif /* _AIC79XX_LINUX_H_ */ 696