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 typedef void ahd_linux_callback_t (u_long); 226 static __inline void ahd_timer_reset(ahd_timer_t *timer, int usec, 227 ahd_callback_t *func, void *arg); 228 229 static __inline void 230 ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg) 231 { 232 struct ahd_softc *ahd; 233 234 ahd = (struct ahd_softc *)arg; 235 del_timer(timer); 236 timer->data = (u_long)arg; 237 timer->expires = jiffies + (usec * HZ)/1000000; 238 timer->function = (ahd_linux_callback_t*)func; 239 add_timer(timer); 240 } 241 242 /***************************** SMP support ************************************/ 243 #include <linux/spinlock.h> 244 245 #define AIC79XX_DRIVER_VERSION "3.0" 246 247 /*************************** Device Data Structures ***************************/ 248 /* 249 * A per probed device structure used to deal with some error recovery 250 * scenarios that the Linux mid-layer code just doesn't know how to 251 * handle. The structure allocated for a device only becomes persistent 252 * after a successfully completed inquiry command to the target when 253 * that inquiry data indicates a lun is present. 254 */ 255 256 typedef enum { 257 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 258 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 259 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 260 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 261 } ahd_linux_dev_flags; 262 263 struct ahd_linux_device { 264 TAILQ_ENTRY(ahd_linux_device) links; 265 266 /* 267 * The number of transactions currently 268 * queued to the device. 269 */ 270 int active; 271 272 /* 273 * The currently allowed number of 274 * transactions that can be queued to 275 * the device. Must be signed for 276 * conversion from tagged to untagged 277 * mode where the device may have more 278 * than one outstanding active transaction. 279 */ 280 int openings; 281 282 /* 283 * A positive count indicates that this 284 * device's queue is halted. 285 */ 286 u_int qfrozen; 287 288 /* 289 * Cumulative command counter. 290 */ 291 u_long commands_issued; 292 293 /* 294 * The number of tagged transactions when 295 * running at our current opening level 296 * that have been successfully received by 297 * this device since the last QUEUE FULL. 298 */ 299 u_int tag_success_count; 300 #define AHD_TAG_SUCCESS_INTERVAL 50 301 302 ahd_linux_dev_flags flags; 303 304 /* 305 * Per device timer. 306 */ 307 struct timer_list timer; 308 309 /* 310 * The high limit for the tags variable. 311 */ 312 u_int maxtags; 313 314 /* 315 * The computed number of tags outstanding 316 * at the time of the last QUEUE FULL event. 317 */ 318 u_int tags_on_last_queuefull; 319 320 /* 321 * How many times we have seen a queue full 322 * with the same number of tags. This is used 323 * to stop our adaptive queue depth algorithm 324 * on devices with a fixed number of tags. 325 */ 326 u_int last_queuefull_same_count; 327 #define AHD_LOCK_TAGS_COUNT 50 328 329 /* 330 * How many transactions have been queued 331 * without the device going idle. We use 332 * this statistic to determine when to issue 333 * an ordered tag to prevent transaction 334 * starvation. This statistic is only updated 335 * if the AHD_DEV_PERIODIC_OTAG flag is set 336 * on this device. 337 */ 338 u_int commands_since_idle_or_otag; 339 #define AHD_OTAG_THRESH 500 340 }; 341 342 /********************* Definitions Required by the Core ***********************/ 343 /* 344 * Number of SG segments we require. So long as the S/G segments for 345 * a particular transaction are allocated in a physically contiguous 346 * manner and are allocated below 4GB, the number of S/G segments is 347 * unrestricted. 348 */ 349 #define AHD_NSEG 128 350 351 /* 352 * Per-SCB OSM storage. 353 */ 354 struct scb_platform_data { 355 struct ahd_linux_device *dev; 356 dma_addr_t buf_busaddr; 357 uint32_t xfer_len; 358 uint32_t sense_resid; /* Auto-Sense residual */ 359 }; 360 361 /* 362 * Define a structure used for each host adapter. All members are 363 * aligned on a boundary >= the size of the member to honor the 364 * alignment restrictions of the various platforms supported by 365 * this driver. 366 */ 367 struct ahd_platform_data { 368 /* 369 * Fields accessed from interrupt context. 370 */ 371 struct scsi_target *starget[AHD_NUM_TARGETS]; 372 373 spinlock_t spin_lock; 374 struct completion *eh_done; 375 struct Scsi_Host *host; /* pointer to scsi host */ 376 #define AHD_LINUX_NOIRQ ((uint32_t)~0) 377 uint32_t irq; /* IRQ for this adapter */ 378 uint32_t bios_address; 379 uint32_t mem_busaddr; /* Mem Base Addr */ 380 }; 381 382 /************************** OS Utility Wrappers *******************************/ 383 #define printf printk 384 #define M_NOWAIT GFP_ATOMIC 385 #define M_WAITOK 0 386 #define malloc(size, type, flags) kmalloc(size, flags) 387 #define free(ptr, type) kfree(ptr) 388 389 static __inline void ahd_delay(long); 390 static __inline void 391 ahd_delay(long usec) 392 { 393 /* 394 * udelay on Linux can have problems for 395 * multi-millisecond waits. Wait at most 396 * 1024us per call. 397 */ 398 while (usec > 0) { 399 udelay(usec % 1024); 400 usec -= 1024; 401 } 402 } 403 404 405 /***************************** Low Level I/O **********************************/ 406 static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port); 407 static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port); 408 static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); 409 static __inline void ahd_outw_atomic(struct ahd_softc * ahd, 410 long port, uint16_t val); 411 static __inline void ahd_outsb(struct ahd_softc * ahd, long port, 412 uint8_t *, int count); 413 static __inline void ahd_insb(struct ahd_softc * ahd, long port, 414 uint8_t *, int count); 415 416 static __inline uint8_t 417 ahd_inb(struct ahd_softc * ahd, long port) 418 { 419 uint8_t x; 420 421 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 422 x = readb(ahd->bshs[0].maddr + port); 423 } else { 424 x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 425 } 426 mb(); 427 return (x); 428 } 429 430 static __inline uint16_t 431 ahd_inw_atomic(struct ahd_softc * ahd, long port) 432 { 433 uint8_t x; 434 435 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 436 x = readw(ahd->bshs[0].maddr + port); 437 } else { 438 x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 439 } 440 mb(); 441 return (x); 442 } 443 444 static __inline void 445 ahd_outb(struct ahd_softc * ahd, long port, uint8_t val) 446 { 447 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 448 writeb(val, ahd->bshs[0].maddr + port); 449 } else { 450 outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 451 } 452 mb(); 453 } 454 455 static __inline void 456 ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val) 457 { 458 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 459 writew(val, ahd->bshs[0].maddr + port); 460 } else { 461 outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 462 } 463 mb(); 464 } 465 466 static __inline void 467 ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 468 { 469 int i; 470 471 /* 472 * There is probably a more efficient way to do this on Linux 473 * but we don't use this for anything speed critical and this 474 * should work. 475 */ 476 for (i = 0; i < count; i++) 477 ahd_outb(ahd, port, *array++); 478 } 479 480 static __inline void 481 ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 482 { 483 int i; 484 485 /* 486 * There is probably a more efficient way to do this on Linux 487 * but we don't use this for anything speed critical and this 488 * should work. 489 */ 490 for (i = 0; i < count; i++) 491 *array++ = ahd_inb(ahd, port); 492 } 493 494 /**************************** Initialization **********************************/ 495 int ahd_linux_register_host(struct ahd_softc *, 496 struct scsi_host_template *); 497 498 /*************************** Pretty Printing **********************************/ 499 struct info_str { 500 char *buffer; 501 int length; 502 off_t offset; 503 int pos; 504 }; 505 506 /******************************** Locking *************************************/ 507 static __inline void 508 ahd_lockinit(struct ahd_softc *ahd) 509 { 510 spin_lock_init(&ahd->platform_data->spin_lock); 511 } 512 513 static __inline void 514 ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 515 { 516 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 517 } 518 519 static __inline void 520 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 521 { 522 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 523 } 524 525 /******************************* PCI Definitions ******************************/ 526 /* 527 * PCIM_xxx: mask to locate subfield in register 528 * PCIR_xxx: config register offset 529 * PCIC_xxx: device class 530 * PCIS_xxx: device subclass 531 * PCIP_xxx: device programming interface 532 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 533 * PCID_xxx: device ID 534 */ 535 #define PCIR_DEVVENDOR 0x00 536 #define PCIR_VENDOR 0x00 537 #define PCIR_DEVICE 0x02 538 #define PCIR_COMMAND 0x04 539 #define PCIM_CMD_PORTEN 0x0001 540 #define PCIM_CMD_MEMEN 0x0002 541 #define PCIM_CMD_BUSMASTEREN 0x0004 542 #define PCIM_CMD_MWRICEN 0x0010 543 #define PCIM_CMD_PERRESPEN 0x0040 544 #define PCIM_CMD_SERRESPEN 0x0100 545 #define PCIR_STATUS 0x06 546 #define PCIR_REVID 0x08 547 #define PCIR_PROGIF 0x09 548 #define PCIR_SUBCLASS 0x0a 549 #define PCIR_CLASS 0x0b 550 #define PCIR_CACHELNSZ 0x0c 551 #define PCIR_LATTIMER 0x0d 552 #define PCIR_HEADERTYPE 0x0e 553 #define PCIM_MFDEV 0x80 554 #define PCIR_BIST 0x0f 555 #define PCIR_CAP_PTR 0x34 556 557 /* config registers for header type 0 devices */ 558 #define PCIR_MAPS 0x10 559 #define PCIR_SUBVEND_0 0x2c 560 #define PCIR_SUBDEV_0 0x2e 561 562 /****************************** PCI-X definitions *****************************/ 563 #define PCIXR_COMMAND 0x96 564 #define PCIXR_DEVADDR 0x98 565 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 566 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 567 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 568 #define PCIXR_STATUS 0x9A 569 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 570 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 571 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 572 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 573 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 574 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 575 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 576 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 577 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 578 579 typedef enum 580 { 581 AHD_POWER_STATE_D0, 582 AHD_POWER_STATE_D1, 583 AHD_POWER_STATE_D2, 584 AHD_POWER_STATE_D3 585 } ahd_power_state; 586 587 void ahd_power_state_change(struct ahd_softc *ahd, 588 ahd_power_state new_state); 589 590 /******************************* PCI Routines *********************************/ 591 int ahd_linux_pci_init(void); 592 void ahd_linux_pci_exit(void); 593 int ahd_pci_map_registers(struct ahd_softc *ahd); 594 int ahd_pci_map_int(struct ahd_softc *ahd); 595 596 static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 597 int reg, int width); 598 599 static __inline uint32_t 600 ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width) 601 { 602 switch (width) { 603 case 1: 604 { 605 uint8_t retval; 606 607 pci_read_config_byte(pci, reg, &retval); 608 return (retval); 609 } 610 case 2: 611 { 612 uint16_t retval; 613 pci_read_config_word(pci, reg, &retval); 614 return (retval); 615 } 616 case 4: 617 { 618 uint32_t retval; 619 pci_read_config_dword(pci, reg, &retval); 620 return (retval); 621 } 622 default: 623 panic("ahd_pci_read_config: Read size too big"); 624 /* NOTREACHED */ 625 return (0); 626 } 627 } 628 629 static __inline void ahd_pci_write_config(ahd_dev_softc_t pci, 630 int reg, uint32_t value, 631 int width); 632 633 static __inline void 634 ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width) 635 { 636 switch (width) { 637 case 1: 638 pci_write_config_byte(pci, reg, value); 639 break; 640 case 2: 641 pci_write_config_word(pci, reg, value); 642 break; 643 case 4: 644 pci_write_config_dword(pci, reg, value); 645 break; 646 default: 647 panic("ahd_pci_write_config: Write size too big"); 648 /* NOTREACHED */ 649 } 650 } 651 652 static __inline int ahd_get_pci_function(ahd_dev_softc_t); 653 static __inline int 654 ahd_get_pci_function(ahd_dev_softc_t pci) 655 { 656 return (PCI_FUNC(pci->devfn)); 657 } 658 659 static __inline int ahd_get_pci_slot(ahd_dev_softc_t); 660 static __inline int 661 ahd_get_pci_slot(ahd_dev_softc_t pci) 662 { 663 return (PCI_SLOT(pci->devfn)); 664 } 665 666 static __inline int ahd_get_pci_bus(ahd_dev_softc_t); 667 static __inline int 668 ahd_get_pci_bus(ahd_dev_softc_t pci) 669 { 670 return (pci->bus->number); 671 } 672 673 static __inline void ahd_flush_device_writes(struct ahd_softc *); 674 static __inline void 675 ahd_flush_device_writes(struct ahd_softc *ahd) 676 { 677 /* XXX Is this sufficient for all architectures??? */ 678 ahd_inb(ahd, INTSTAT); 679 } 680 681 /**************************** Proc FS Support *********************************/ 682 int ahd_linux_proc_info(struct Scsi_Host *, char *, char **, 683 off_t, int, int); 684 685 /*********************** Transaction Access Wrappers **************************/ 686 static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 687 static __inline void ahd_set_transaction_status(struct scb *, uint32_t); 688 static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 689 static __inline void ahd_set_scsi_status(struct scb *, uint32_t); 690 static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 691 static __inline uint32_t ahd_get_transaction_status(struct scb *); 692 static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 693 static __inline uint32_t ahd_get_scsi_status(struct scb *); 694 static __inline void ahd_set_transaction_tag(struct scb *, int, u_int); 695 static __inline u_long ahd_get_transfer_length(struct scb *); 696 static __inline int ahd_get_transfer_dir(struct scb *); 697 static __inline void ahd_set_residual(struct scb *, u_long); 698 static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 699 static __inline u_long ahd_get_residual(struct scb *); 700 static __inline u_long ahd_get_sense_residual(struct scb *); 701 static __inline int ahd_perform_autosense(struct scb *); 702 static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 703 struct scb *); 704 static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 705 struct ahd_devinfo *); 706 static __inline void ahd_platform_scb_free(struct ahd_softc *ahd, 707 struct scb *scb); 708 static __inline void ahd_freeze_scb(struct scb *scb); 709 710 static __inline 711 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 712 { 713 cmd->result &= ~(CAM_STATUS_MASK << 16); 714 cmd->result |= status << 16; 715 } 716 717 static __inline 718 void ahd_set_transaction_status(struct scb *scb, uint32_t status) 719 { 720 ahd_cmd_set_transaction_status(scb->io_ctx,status); 721 } 722 723 static __inline 724 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 725 { 726 cmd->result &= ~0xFFFF; 727 cmd->result |= status; 728 } 729 730 static __inline 731 void ahd_set_scsi_status(struct scb *scb, uint32_t status) 732 { 733 ahd_cmd_set_scsi_status(scb->io_ctx, status); 734 } 735 736 static __inline 737 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 738 { 739 return ((cmd->result >> 16) & CAM_STATUS_MASK); 740 } 741 742 static __inline 743 uint32_t ahd_get_transaction_status(struct scb *scb) 744 { 745 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 746 } 747 748 static __inline 749 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 750 { 751 return (cmd->result & 0xFFFF); 752 } 753 754 static __inline 755 uint32_t ahd_get_scsi_status(struct scb *scb) 756 { 757 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 758 } 759 760 static __inline 761 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 762 { 763 /* 764 * Nothing to do for linux as the incoming transaction 765 * has no concept of tag/non tagged, etc. 766 */ 767 } 768 769 static __inline 770 u_long ahd_get_transfer_length(struct scb *scb) 771 { 772 return (scb->platform_data->xfer_len); 773 } 774 775 static __inline 776 int ahd_get_transfer_dir(struct scb *scb) 777 { 778 return (scb->io_ctx->sc_data_direction); 779 } 780 781 static __inline 782 void ahd_set_residual(struct scb *scb, u_long resid) 783 { 784 scsi_set_resid(scb->io_ctx, resid); 785 } 786 787 static __inline 788 void ahd_set_sense_residual(struct scb *scb, u_long resid) 789 { 790 scb->platform_data->sense_resid = resid; 791 } 792 793 static __inline 794 u_long ahd_get_residual(struct scb *scb) 795 { 796 return scsi_get_resid(scb->io_ctx); 797 } 798 799 static __inline 800 u_long ahd_get_sense_residual(struct scb *scb) 801 { 802 return (scb->platform_data->sense_resid); 803 } 804 805 static __inline 806 int ahd_perform_autosense(struct scb *scb) 807 { 808 /* 809 * We always perform autosense in Linux. 810 * On other platforms this is set on a 811 * per-transaction basis. 812 */ 813 return (1); 814 } 815 816 static __inline uint32_t 817 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 818 { 819 return (sizeof(struct scsi_sense_data)); 820 } 821 822 static __inline void 823 ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 824 struct ahd_devinfo *devinfo) 825 { 826 /* Nothing to do here for linux */ 827 } 828 829 static __inline void 830 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 831 { 832 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 833 } 834 835 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 836 void ahd_platform_free(struct ahd_softc *ahd); 837 void ahd_platform_init(struct ahd_softc *ahd); 838 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 839 840 static __inline void 841 ahd_freeze_scb(struct scb *scb) 842 { 843 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 844 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 845 scb->platform_data->dev->qfrozen++; 846 } 847 } 848 849 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 850 struct ahd_devinfo *devinfo, ahd_queue_alg); 851 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 852 char channel, int lun, u_int tag, 853 role_t role, uint32_t status); 854 irqreturn_t 855 ahd_linux_isr(int irq, void *dev_id); 856 void ahd_done(struct ahd_softc*, struct scb*); 857 void ahd_send_async(struct ahd_softc *, char channel, 858 u_int target, u_int lun, ac_code); 859 void ahd_print_path(struct ahd_softc *, struct scb *); 860 861 #ifdef CONFIG_PCI 862 #define AHD_PCI_CONFIG 1 863 #else 864 #define AHD_PCI_CONFIG 0 865 #endif 866 #define bootverbose aic79xx_verbose 867 extern uint32_t aic79xx_verbose; 868 869 #endif /* _AIC79XX_LINUX_H_ */ 870