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/smp_lock.h> 51 #include <linux/interrupt.h> 52 #include <linux/module.h> 53 #include <linux/slab.h> 54 #include <asm/byteorder.h> 55 #include <asm/io.h> 56 57 #include <scsi/scsi.h> 58 #include <scsi/scsi_cmnd.h> 59 #include <scsi/scsi_eh.h> 60 #include <scsi/scsi_device.h> 61 #include <scsi/scsi_host.h> 62 #include <scsi/scsi_tcq.h> 63 #include <scsi/scsi_transport.h> 64 #include <scsi/scsi_transport_spi.h> 65 66 /* Core SCSI definitions */ 67 #define AIC_LIB_PREFIX ahd 68 69 /* Name space conflict with BSD queue macros */ 70 #ifdef LIST_HEAD 71 #undef LIST_HEAD 72 #endif 73 74 #include "cam.h" 75 #include "queue.h" 76 #include "scsi_message.h" 77 #include "scsi_iu.h" 78 #include "aiclib.h" 79 80 /*********************************** Debugging ********************************/ 81 #ifdef CONFIG_AIC79XX_DEBUG_ENABLE 82 #ifdef CONFIG_AIC79XX_DEBUG_MASK 83 #define AHD_DEBUG 1 84 #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK 85 #else 86 /* 87 * Compile in debugging code, but do not enable any printfs. 88 */ 89 #define AHD_DEBUG 1 90 #define AHD_DEBUG_OPTS 0 91 #endif 92 /* No debugging code. */ 93 #endif 94 95 /********************************** Misc Macros *******************************/ 96 #define powerof2(x) ((((x)-1)&(x))==0) 97 98 /************************* Forward Declarations *******************************/ 99 struct ahd_softc; 100 typedef struct pci_dev *ahd_dev_softc_t; 101 typedef struct scsi_cmnd *ahd_io_ctx_t; 102 103 /******************************* Byte Order ***********************************/ 104 #define ahd_htobe16(x) cpu_to_be16(x) 105 #define ahd_htobe32(x) cpu_to_be32(x) 106 #define ahd_htobe64(x) cpu_to_be64(x) 107 #define ahd_htole16(x) cpu_to_le16(x) 108 #define ahd_htole32(x) cpu_to_le32(x) 109 #define ahd_htole64(x) cpu_to_le64(x) 110 111 #define ahd_be16toh(x) be16_to_cpu(x) 112 #define ahd_be32toh(x) be32_to_cpu(x) 113 #define ahd_be64toh(x) be64_to_cpu(x) 114 #define ahd_le16toh(x) le16_to_cpu(x) 115 #define ahd_le32toh(x) le32_to_cpu(x) 116 #define ahd_le64toh(x) le64_to_cpu(x) 117 118 /************************* Configuration Data *********************************/ 119 extern uint32_t aic79xx_allow_memio; 120 extern struct scsi_host_template aic79xx_driver_template; 121 122 /***************************** Bus Space/DMA **********************************/ 123 124 typedef uint32_t bus_size_t; 125 126 typedef enum { 127 BUS_SPACE_MEMIO, 128 BUS_SPACE_PIO 129 } bus_space_tag_t; 130 131 typedef union { 132 u_long ioport; 133 volatile uint8_t __iomem *maddr; 134 } bus_space_handle_t; 135 136 typedef struct bus_dma_segment 137 { 138 dma_addr_t ds_addr; 139 bus_size_t ds_len; 140 } bus_dma_segment_t; 141 142 struct ahd_linux_dma_tag 143 { 144 bus_size_t alignment; 145 bus_size_t boundary; 146 bus_size_t maxsize; 147 }; 148 typedef struct ahd_linux_dma_tag* bus_dma_tag_t; 149 150 typedef dma_addr_t bus_dmamap_t; 151 152 typedef int bus_dma_filter_t(void*, dma_addr_t); 153 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 154 155 #define BUS_DMA_WAITOK 0x0 156 #define BUS_DMA_NOWAIT 0x1 157 #define BUS_DMA_ALLOCNOW 0x2 158 #define BUS_DMA_LOAD_SEGS 0x4 /* 159 * Argument is an S/G list not 160 * a single buffer. 161 */ 162 163 #define BUS_SPACE_MAXADDR 0xFFFFFFFF 164 #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF 165 #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF 166 167 int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/, 168 bus_size_t /*alignment*/, bus_size_t /*boundary*/, 169 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, 170 bus_dma_filter_t*/*filter*/, void */*filterarg*/, 171 bus_size_t /*maxsize*/, int /*nsegments*/, 172 bus_size_t /*maxsegsz*/, int /*flags*/, 173 bus_dma_tag_t */*dma_tagp*/); 174 175 void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/); 176 177 int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 178 void** /*vaddr*/, int /*flags*/, 179 bus_dmamap_t* /*mapp*/); 180 181 void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 182 void* /*vaddr*/, bus_dmamap_t /*map*/); 183 184 void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/, 185 bus_dmamap_t /*map*/); 186 187 int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/, 188 bus_dmamap_t /*map*/, void * /*buf*/, 189 bus_size_t /*buflen*/, bus_dmamap_callback_t *, 190 void */*callback_arg*/, int /*flags*/); 191 192 int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t); 193 194 /* 195 * Operations performed by ahd_dmamap_sync(). 196 */ 197 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 198 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 199 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 200 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 201 202 /* 203 * XXX 204 * ahd_dmamap_sync is only used on buffers allocated with 205 * the pci_alloc_consistent() API. Although I'm not sure how 206 * this works on architectures with a write buffer, Linux does 207 * not have an API to sync "coherent" memory. Perhaps we need 208 * to do an mb()? 209 */ 210 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op) 211 212 /************************** Timer DataStructures ******************************/ 213 typedef struct timer_list ahd_timer_t; 214 215 /********************************** Includes **********************************/ 216 #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT 217 #define AIC_DEBUG_REGISTERS 1 218 #else 219 #define AIC_DEBUG_REGISTERS 0 220 #endif 221 #include "aic79xx.h" 222 223 /***************************** Timer Facilities *******************************/ 224 #define ahd_timer_init init_timer 225 #define ahd_timer_stop del_timer_sync 226 typedef void ahd_linux_callback_t (u_long); 227 static __inline void ahd_timer_reset(ahd_timer_t *timer, int usec, 228 ahd_callback_t *func, void *arg); 229 230 static __inline void 231 ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg) 232 { 233 struct ahd_softc *ahd; 234 235 ahd = (struct ahd_softc *)arg; 236 del_timer(timer); 237 timer->data = (u_long)arg; 238 timer->expires = jiffies + (usec * HZ)/1000000; 239 timer->function = (ahd_linux_callback_t*)func; 240 add_timer(timer); 241 } 242 243 /***************************** SMP support ************************************/ 244 #include <linux/spinlock.h> 245 246 #define AIC79XX_DRIVER_VERSION "3.0" 247 248 /*************************** Device Data Structures ***************************/ 249 /* 250 * A per probed device structure used to deal with some error recovery 251 * scenarios that the Linux mid-layer code just doesn't know how to 252 * handle. The structure allocated for a device only becomes persistent 253 * after a successfully completed inquiry command to the target when 254 * that inquiry data indicates a lun is present. 255 */ 256 257 typedef enum { 258 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 259 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 260 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 261 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 262 } ahd_linux_dev_flags; 263 264 struct ahd_linux_device { 265 TAILQ_ENTRY(ahd_linux_device) links; 266 267 /* 268 * The number of transactions currently 269 * queued to the device. 270 */ 271 int active; 272 273 /* 274 * The currently allowed number of 275 * transactions that can be queued to 276 * the device. Must be signed for 277 * conversion from tagged to untagged 278 * mode where the device may have more 279 * than one outstanding active transaction. 280 */ 281 int openings; 282 283 /* 284 * A positive count indicates that this 285 * device's queue is halted. 286 */ 287 u_int qfrozen; 288 289 /* 290 * Cumulative command counter. 291 */ 292 u_long commands_issued; 293 294 /* 295 * The number of tagged transactions when 296 * running at our current opening level 297 * that have been successfully received by 298 * this device since the last QUEUE FULL. 299 */ 300 u_int tag_success_count; 301 #define AHD_TAG_SUCCESS_INTERVAL 50 302 303 ahd_linux_dev_flags flags; 304 305 /* 306 * Per device timer. 307 */ 308 struct timer_list timer; 309 310 /* 311 * The high limit for the tags variable. 312 */ 313 u_int maxtags; 314 315 /* 316 * The computed number of tags outstanding 317 * at the time of the last QUEUE FULL event. 318 */ 319 u_int tags_on_last_queuefull; 320 321 /* 322 * How many times we have seen a queue full 323 * with the same number of tags. This is used 324 * to stop our adaptive queue depth algorithm 325 * on devices with a fixed number of tags. 326 */ 327 u_int last_queuefull_same_count; 328 #define AHD_LOCK_TAGS_COUNT 50 329 330 /* 331 * How many transactions have been queued 332 * without the device going idle. We use 333 * this statistic to determine when to issue 334 * an ordered tag to prevent transaction 335 * starvation. This statistic is only updated 336 * if the AHD_DEV_PERIODIC_OTAG flag is set 337 * on this device. 338 */ 339 u_int commands_since_idle_or_otag; 340 #define AHD_OTAG_THRESH 500 341 }; 342 343 /********************* Definitions Required by the Core ***********************/ 344 /* 345 * Number of SG segments we require. So long as the S/G segments for 346 * a particular transaction are allocated in a physically contiguous 347 * manner and are allocated below 4GB, the number of S/G segments is 348 * unrestricted. 349 */ 350 #define AHD_NSEG 128 351 352 /* 353 * Per-SCB OSM storage. 354 */ 355 struct scb_platform_data { 356 struct ahd_linux_device *dev; 357 dma_addr_t buf_busaddr; 358 uint32_t xfer_len; 359 uint32_t sense_resid; /* Auto-Sense residual */ 360 }; 361 362 /* 363 * Define a structure used for each host adapter. All members are 364 * aligned on a boundary >= the size of the member to honor the 365 * alignment restrictions of the various platforms supported by 366 * this driver. 367 */ 368 struct ahd_platform_data { 369 /* 370 * Fields accessed from interrupt context. 371 */ 372 struct scsi_target *starget[AHD_NUM_TARGETS]; 373 374 spinlock_t spin_lock; 375 struct completion *eh_done; 376 struct Scsi_Host *host; /* pointer to scsi host */ 377 #define AHD_LINUX_NOIRQ ((uint32_t)~0) 378 uint32_t irq; /* IRQ for this adapter */ 379 uint32_t bios_address; 380 uint32_t mem_busaddr; /* Mem Base Addr */ 381 }; 382 383 /************************** OS Utility Wrappers *******************************/ 384 #define printf printk 385 #define M_NOWAIT GFP_ATOMIC 386 #define M_WAITOK 0 387 #define malloc(size, type, flags) kmalloc(size, flags) 388 #define free(ptr, type) kfree(ptr) 389 390 static __inline void ahd_delay(long); 391 static __inline void 392 ahd_delay(long usec) 393 { 394 /* 395 * udelay on Linux can have problems for 396 * multi-millisecond waits. Wait at most 397 * 1024us per call. 398 */ 399 while (usec > 0) { 400 udelay(usec % 1024); 401 usec -= 1024; 402 } 403 } 404 405 406 /***************************** Low Level I/O **********************************/ 407 static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port); 408 static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port); 409 static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); 410 static __inline void ahd_outw_atomic(struct ahd_softc * ahd, 411 long port, uint16_t val); 412 static __inline void ahd_outsb(struct ahd_softc * ahd, long port, 413 uint8_t *, int count); 414 static __inline void ahd_insb(struct ahd_softc * ahd, long port, 415 uint8_t *, int count); 416 417 static __inline uint8_t 418 ahd_inb(struct ahd_softc * ahd, long port) 419 { 420 uint8_t x; 421 422 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 423 x = readb(ahd->bshs[0].maddr + port); 424 } else { 425 x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 426 } 427 mb(); 428 return (x); 429 } 430 431 static __inline uint16_t 432 ahd_inw_atomic(struct ahd_softc * ahd, long port) 433 { 434 uint8_t x; 435 436 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 437 x = readw(ahd->bshs[0].maddr + port); 438 } else { 439 x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 440 } 441 mb(); 442 return (x); 443 } 444 445 static __inline void 446 ahd_outb(struct ahd_softc * ahd, long port, uint8_t val) 447 { 448 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 449 writeb(val, ahd->bshs[0].maddr + port); 450 } else { 451 outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 452 } 453 mb(); 454 } 455 456 static __inline void 457 ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val) 458 { 459 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 460 writew(val, ahd->bshs[0].maddr + port); 461 } else { 462 outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 463 } 464 mb(); 465 } 466 467 static __inline void 468 ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 469 { 470 int i; 471 472 /* 473 * There is probably a more efficient way to do this on Linux 474 * but we don't use this for anything speed critical and this 475 * should work. 476 */ 477 for (i = 0; i < count; i++) 478 ahd_outb(ahd, port, *array++); 479 } 480 481 static __inline void 482 ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 483 { 484 int i; 485 486 /* 487 * There is probably a more efficient way to do this on Linux 488 * but we don't use this for anything speed critical and this 489 * should work. 490 */ 491 for (i = 0; i < count; i++) 492 *array++ = ahd_inb(ahd, port); 493 } 494 495 /**************************** Initialization **********************************/ 496 int ahd_linux_register_host(struct ahd_softc *, 497 struct scsi_host_template *); 498 499 /*************************** Pretty Printing **********************************/ 500 struct info_str { 501 char *buffer; 502 int length; 503 off_t offset; 504 int pos; 505 }; 506 507 /******************************** Locking *************************************/ 508 static __inline void 509 ahd_lockinit(struct ahd_softc *ahd) 510 { 511 spin_lock_init(&ahd->platform_data->spin_lock); 512 } 513 514 static __inline void 515 ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 516 { 517 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 518 } 519 520 static __inline void 521 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 522 { 523 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 524 } 525 526 /******************************* PCI Definitions ******************************/ 527 /* 528 * PCIM_xxx: mask to locate subfield in register 529 * PCIR_xxx: config register offset 530 * PCIC_xxx: device class 531 * PCIS_xxx: device subclass 532 * PCIP_xxx: device programming interface 533 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 534 * PCID_xxx: device ID 535 */ 536 #define PCIR_DEVVENDOR 0x00 537 #define PCIR_VENDOR 0x00 538 #define PCIR_DEVICE 0x02 539 #define PCIR_COMMAND 0x04 540 #define PCIM_CMD_PORTEN 0x0001 541 #define PCIM_CMD_MEMEN 0x0002 542 #define PCIM_CMD_BUSMASTEREN 0x0004 543 #define PCIM_CMD_MWRICEN 0x0010 544 #define PCIM_CMD_PERRESPEN 0x0040 545 #define PCIM_CMD_SERRESPEN 0x0100 546 #define PCIR_STATUS 0x06 547 #define PCIR_REVID 0x08 548 #define PCIR_PROGIF 0x09 549 #define PCIR_SUBCLASS 0x0a 550 #define PCIR_CLASS 0x0b 551 #define PCIR_CACHELNSZ 0x0c 552 #define PCIR_LATTIMER 0x0d 553 #define PCIR_HEADERTYPE 0x0e 554 #define PCIM_MFDEV 0x80 555 #define PCIR_BIST 0x0f 556 #define PCIR_CAP_PTR 0x34 557 558 /* config registers for header type 0 devices */ 559 #define PCIR_MAPS 0x10 560 #define PCIR_SUBVEND_0 0x2c 561 #define PCIR_SUBDEV_0 0x2e 562 563 /****************************** PCI-X definitions *****************************/ 564 #define PCIXR_COMMAND 0x96 565 #define PCIXR_DEVADDR 0x98 566 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 567 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 568 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 569 #define PCIXR_STATUS 0x9A 570 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 571 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 572 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 573 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 574 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 575 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 576 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 577 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 578 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 579 580 typedef enum 581 { 582 AHD_POWER_STATE_D0, 583 AHD_POWER_STATE_D1, 584 AHD_POWER_STATE_D2, 585 AHD_POWER_STATE_D3 586 } ahd_power_state; 587 588 void ahd_power_state_change(struct ahd_softc *ahd, 589 ahd_power_state new_state); 590 591 /******************************* PCI Routines *********************************/ 592 int ahd_linux_pci_init(void); 593 void ahd_linux_pci_exit(void); 594 int ahd_pci_map_registers(struct ahd_softc *ahd); 595 int ahd_pci_map_int(struct ahd_softc *ahd); 596 597 static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 598 int reg, int width); 599 600 static __inline uint32_t 601 ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width) 602 { 603 switch (width) { 604 case 1: 605 { 606 uint8_t retval; 607 608 pci_read_config_byte(pci, reg, &retval); 609 return (retval); 610 } 611 case 2: 612 { 613 uint16_t retval; 614 pci_read_config_word(pci, reg, &retval); 615 return (retval); 616 } 617 case 4: 618 { 619 uint32_t retval; 620 pci_read_config_dword(pci, reg, &retval); 621 return (retval); 622 } 623 default: 624 panic("ahd_pci_read_config: Read size too big"); 625 /* NOTREACHED */ 626 return (0); 627 } 628 } 629 630 static __inline void ahd_pci_write_config(ahd_dev_softc_t pci, 631 int reg, uint32_t value, 632 int width); 633 634 static __inline void 635 ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width) 636 { 637 switch (width) { 638 case 1: 639 pci_write_config_byte(pci, reg, value); 640 break; 641 case 2: 642 pci_write_config_word(pci, reg, value); 643 break; 644 case 4: 645 pci_write_config_dword(pci, reg, value); 646 break; 647 default: 648 panic("ahd_pci_write_config: Write size too big"); 649 /* NOTREACHED */ 650 } 651 } 652 653 static __inline int ahd_get_pci_function(ahd_dev_softc_t); 654 static __inline int 655 ahd_get_pci_function(ahd_dev_softc_t pci) 656 { 657 return (PCI_FUNC(pci->devfn)); 658 } 659 660 static __inline int ahd_get_pci_slot(ahd_dev_softc_t); 661 static __inline int 662 ahd_get_pci_slot(ahd_dev_softc_t pci) 663 { 664 return (PCI_SLOT(pci->devfn)); 665 } 666 667 static __inline int ahd_get_pci_bus(ahd_dev_softc_t); 668 static __inline int 669 ahd_get_pci_bus(ahd_dev_softc_t pci) 670 { 671 return (pci->bus->number); 672 } 673 674 static __inline void ahd_flush_device_writes(struct ahd_softc *); 675 static __inline void 676 ahd_flush_device_writes(struct ahd_softc *ahd) 677 { 678 /* XXX Is this sufficient for all architectures??? */ 679 ahd_inb(ahd, INTSTAT); 680 } 681 682 /**************************** Proc FS Support *********************************/ 683 int ahd_linux_proc_info(struct Scsi_Host *, char *, char **, 684 off_t, int, int); 685 686 /*********************** Transaction Access Wrappers **************************/ 687 static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 688 static __inline void ahd_set_transaction_status(struct scb *, uint32_t); 689 static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 690 static __inline void ahd_set_scsi_status(struct scb *, uint32_t); 691 static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 692 static __inline uint32_t ahd_get_transaction_status(struct scb *); 693 static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 694 static __inline uint32_t ahd_get_scsi_status(struct scb *); 695 static __inline void ahd_set_transaction_tag(struct scb *, int, u_int); 696 static __inline u_long ahd_get_transfer_length(struct scb *); 697 static __inline int ahd_get_transfer_dir(struct scb *); 698 static __inline void ahd_set_residual(struct scb *, u_long); 699 static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 700 static __inline u_long ahd_get_residual(struct scb *); 701 static __inline u_long ahd_get_sense_residual(struct scb *); 702 static __inline int ahd_perform_autosense(struct scb *); 703 static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 704 struct scb *); 705 static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 706 struct ahd_devinfo *); 707 static __inline void ahd_platform_scb_free(struct ahd_softc *ahd, 708 struct scb *scb); 709 static __inline void ahd_freeze_scb(struct scb *scb); 710 711 static __inline 712 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 713 { 714 cmd->result &= ~(CAM_STATUS_MASK << 16); 715 cmd->result |= status << 16; 716 } 717 718 static __inline 719 void ahd_set_transaction_status(struct scb *scb, uint32_t status) 720 { 721 ahd_cmd_set_transaction_status(scb->io_ctx,status); 722 } 723 724 static __inline 725 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 726 { 727 cmd->result &= ~0xFFFF; 728 cmd->result |= status; 729 } 730 731 static __inline 732 void ahd_set_scsi_status(struct scb *scb, uint32_t status) 733 { 734 ahd_cmd_set_scsi_status(scb->io_ctx, status); 735 } 736 737 static __inline 738 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 739 { 740 return ((cmd->result >> 16) & CAM_STATUS_MASK); 741 } 742 743 static __inline 744 uint32_t ahd_get_transaction_status(struct scb *scb) 745 { 746 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 747 } 748 749 static __inline 750 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 751 { 752 return (cmd->result & 0xFFFF); 753 } 754 755 static __inline 756 uint32_t ahd_get_scsi_status(struct scb *scb) 757 { 758 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 759 } 760 761 static __inline 762 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 763 { 764 /* 765 * Nothing to do for linux as the incoming transaction 766 * has no concept of tag/non tagged, etc. 767 */ 768 } 769 770 static __inline 771 u_long ahd_get_transfer_length(struct scb *scb) 772 { 773 return (scb->platform_data->xfer_len); 774 } 775 776 static __inline 777 int ahd_get_transfer_dir(struct scb *scb) 778 { 779 return (scb->io_ctx->sc_data_direction); 780 } 781 782 static __inline 783 void ahd_set_residual(struct scb *scb, u_long resid) 784 { 785 scb->io_ctx->resid = resid; 786 } 787 788 static __inline 789 void ahd_set_sense_residual(struct scb *scb, u_long resid) 790 { 791 scb->platform_data->sense_resid = resid; 792 } 793 794 static __inline 795 u_long ahd_get_residual(struct scb *scb) 796 { 797 return (scb->io_ctx->resid); 798 } 799 800 static __inline 801 u_long ahd_get_sense_residual(struct scb *scb) 802 { 803 return (scb->platform_data->sense_resid); 804 } 805 806 static __inline 807 int ahd_perform_autosense(struct scb *scb) 808 { 809 /* 810 * We always perform autosense in Linux. 811 * On other platforms this is set on a 812 * per-transaction basis. 813 */ 814 return (1); 815 } 816 817 static __inline uint32_t 818 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 819 { 820 return (sizeof(struct scsi_sense_data)); 821 } 822 823 static __inline void 824 ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 825 struct ahd_devinfo *devinfo) 826 { 827 /* Nothing to do here for linux */ 828 } 829 830 static __inline void 831 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 832 { 833 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 834 } 835 836 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 837 void ahd_platform_free(struct ahd_softc *ahd); 838 void ahd_platform_init(struct ahd_softc *ahd); 839 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 840 void ahd_freeze_simq(struct ahd_softc *ahd); 841 void ahd_release_simq(struct ahd_softc *ahd); 842 843 static __inline void 844 ahd_freeze_scb(struct scb *scb) 845 { 846 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 847 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 848 scb->platform_data->dev->qfrozen++; 849 } 850 } 851 852 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 853 struct ahd_devinfo *devinfo, ahd_queue_alg); 854 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 855 char channel, int lun, u_int tag, 856 role_t role, uint32_t status); 857 irqreturn_t 858 ahd_linux_isr(int irq, void *dev_id); 859 void ahd_done(struct ahd_softc*, struct scb*); 860 void ahd_send_async(struct ahd_softc *, char channel, 861 u_int target, u_int lun, ac_code); 862 void ahd_print_path(struct ahd_softc *, struct scb *); 863 864 #ifdef CONFIG_PCI 865 #define AHD_PCI_CONFIG 1 866 #else 867 #define AHD_PCI_CONFIG 0 868 #endif 869 #define bootverbose aic79xx_verbose 870 extern uint32_t aic79xx_verbose; 871 872 #endif /* _AIC79XX_LINUX_H_ */ 873