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 pci_alloc_consistent() 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 372 ahd_lockinit(struct ahd_softc *ahd) 373 { 374 spin_lock_init(&ahd->platform_data->spin_lock); 375 } 376 377 static inline void 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 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 #define PCIR_SUBVEND_0 0x2c 424 #define PCIR_SUBDEV_0 0x2e 425 426 /****************************** PCI-X definitions *****************************/ 427 #define PCIXR_COMMAND 0x96 428 #define PCIXR_DEVADDR 0x98 429 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 430 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 431 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 432 #define PCIXR_STATUS 0x9A 433 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 434 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 435 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 436 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 437 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 438 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 439 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 440 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 441 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 442 443 typedef enum 444 { 445 AHD_POWER_STATE_D0, 446 AHD_POWER_STATE_D1, 447 AHD_POWER_STATE_D2, 448 AHD_POWER_STATE_D3 449 } ahd_power_state; 450 451 void ahd_power_state_change(struct ahd_softc *ahd, 452 ahd_power_state new_state); 453 454 /******************************* PCI Routines *********************************/ 455 int ahd_linux_pci_init(void); 456 void ahd_linux_pci_exit(void); 457 int ahd_pci_map_registers(struct ahd_softc *ahd); 458 int ahd_pci_map_int(struct ahd_softc *ahd); 459 460 uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 461 int reg, int width); 462 void ahd_pci_write_config(ahd_dev_softc_t pci, 463 int reg, uint32_t value, 464 int width); 465 466 static inline int ahd_get_pci_function(ahd_dev_softc_t); 467 static inline int 468 ahd_get_pci_function(ahd_dev_softc_t pci) 469 { 470 return (PCI_FUNC(pci->devfn)); 471 } 472 473 static inline int ahd_get_pci_slot(ahd_dev_softc_t); 474 static inline int 475 ahd_get_pci_slot(ahd_dev_softc_t pci) 476 { 477 return (PCI_SLOT(pci->devfn)); 478 } 479 480 static inline int ahd_get_pci_bus(ahd_dev_softc_t); 481 static inline int 482 ahd_get_pci_bus(ahd_dev_softc_t pci) 483 { 484 return (pci->bus->number); 485 } 486 487 static inline void ahd_flush_device_writes(struct ahd_softc *); 488 static inline void 489 ahd_flush_device_writes(struct ahd_softc *ahd) 490 { 491 /* XXX Is this sufficient for all architectures??? */ 492 ahd_inb(ahd, INTSTAT); 493 } 494 495 /**************************** Proc FS Support *********************************/ 496 int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int); 497 int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *); 498 499 /*********************** Transaction Access Wrappers **************************/ 500 static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 501 static inline void ahd_set_transaction_status(struct scb *, uint32_t); 502 static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 503 static inline void ahd_set_scsi_status(struct scb *, uint32_t); 504 static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 505 static inline uint32_t ahd_get_transaction_status(struct scb *); 506 static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 507 static inline uint32_t ahd_get_scsi_status(struct scb *); 508 static inline void ahd_set_transaction_tag(struct scb *, int, u_int); 509 static inline u_long ahd_get_transfer_length(struct scb *); 510 static inline int ahd_get_transfer_dir(struct scb *); 511 static inline void ahd_set_residual(struct scb *, u_long); 512 static inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 513 static inline u_long ahd_get_residual(struct scb *); 514 static inline u_long ahd_get_sense_residual(struct scb *); 515 static inline int ahd_perform_autosense(struct scb *); 516 static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 517 struct scb *); 518 static inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 519 struct ahd_devinfo *); 520 static inline void ahd_platform_scb_free(struct ahd_softc *ahd, 521 struct scb *scb); 522 static inline void ahd_freeze_scb(struct scb *scb); 523 524 static inline 525 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 526 { 527 cmd->result &= ~(CAM_STATUS_MASK << 16); 528 cmd->result |= status << 16; 529 } 530 531 static inline 532 void ahd_set_transaction_status(struct scb *scb, uint32_t status) 533 { 534 ahd_cmd_set_transaction_status(scb->io_ctx,status); 535 } 536 537 static inline 538 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 539 { 540 cmd->result &= ~0xFFFF; 541 cmd->result |= status; 542 } 543 544 static inline 545 void ahd_set_scsi_status(struct scb *scb, uint32_t status) 546 { 547 ahd_cmd_set_scsi_status(scb->io_ctx, status); 548 } 549 550 static inline 551 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 552 { 553 return ((cmd->result >> 16) & CAM_STATUS_MASK); 554 } 555 556 static inline 557 uint32_t ahd_get_transaction_status(struct scb *scb) 558 { 559 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 560 } 561 562 static inline 563 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 564 { 565 return (cmd->result & 0xFFFF); 566 } 567 568 static inline 569 uint32_t ahd_get_scsi_status(struct scb *scb) 570 { 571 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 572 } 573 574 static inline 575 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 576 { 577 /* 578 * Nothing to do for linux as the incoming transaction 579 * has no concept of tag/non tagged, etc. 580 */ 581 } 582 583 static inline 584 u_long ahd_get_transfer_length(struct scb *scb) 585 { 586 return (scb->platform_data->xfer_len); 587 } 588 589 static inline 590 int ahd_get_transfer_dir(struct scb *scb) 591 { 592 return (scb->io_ctx->sc_data_direction); 593 } 594 595 static inline 596 void ahd_set_residual(struct scb *scb, u_long resid) 597 { 598 scsi_set_resid(scb->io_ctx, resid); 599 } 600 601 static inline 602 void ahd_set_sense_residual(struct scb *scb, u_long resid) 603 { 604 scb->platform_data->sense_resid = resid; 605 } 606 607 static inline 608 u_long ahd_get_residual(struct scb *scb) 609 { 610 return scsi_get_resid(scb->io_ctx); 611 } 612 613 static inline 614 u_long ahd_get_sense_residual(struct scb *scb) 615 { 616 return (scb->platform_data->sense_resid); 617 } 618 619 static inline 620 int ahd_perform_autosense(struct scb *scb) 621 { 622 /* 623 * We always perform autosense in Linux. 624 * On other platforms this is set on a 625 * per-transaction basis. 626 */ 627 return (1); 628 } 629 630 static inline uint32_t 631 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 632 { 633 return (sizeof(struct scsi_sense_data)); 634 } 635 636 static inline void 637 ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 638 struct ahd_devinfo *devinfo) 639 { 640 /* Nothing to do here for linux */ 641 } 642 643 static inline void 644 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 645 { 646 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 647 } 648 649 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 650 void ahd_platform_free(struct ahd_softc *ahd); 651 void ahd_platform_init(struct ahd_softc *ahd); 652 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 653 654 static inline void 655 ahd_freeze_scb(struct scb *scb) 656 { 657 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 658 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 659 scb->platform_data->dev->qfrozen++; 660 } 661 } 662 663 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 664 struct ahd_devinfo *devinfo, ahd_queue_alg); 665 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 666 char channel, int lun, u_int tag, 667 role_t role, uint32_t status); 668 irqreturn_t 669 ahd_linux_isr(int irq, void *dev_id); 670 void ahd_done(struct ahd_softc*, struct scb*); 671 void ahd_send_async(struct ahd_softc *, char channel, 672 u_int target, u_int lun, ac_code); 673 void ahd_print_path(struct ahd_softc *, struct scb *); 674 675 #ifdef CONFIG_PCI 676 #define AHD_PCI_CONFIG 1 677 #else 678 #define AHD_PCI_CONFIG 0 679 #endif 680 #define bootverbose aic79xx_verbose 681 extern uint32_t aic79xx_verbose; 682 683 #endif /* _AIC79XX_LINUX_H_ */ 684