aic7xxx_osm.h 23 KB

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  1. /*
  2. * Adaptec AIC7xxx device driver for Linux.
  3. *
  4. * Copyright (c) 1994 John Aycock
  5. * The University of Calgary Department of Computer Science.
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License as published by
  9. * the Free Software Foundation; either version 2, or (at your option)
  10. * any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; see the file COPYING. If not, write to
  19. * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20. *
  21. * Copyright (c) 2000-2003 Adaptec Inc.
  22. * All rights reserved.
  23. *
  24. * Redistribution and use in source and binary forms, with or without
  25. * modification, are permitted provided that the following conditions
  26. * are met:
  27. * 1. Redistributions of source code must retain the above copyright
  28. * notice, this list of conditions, and the following disclaimer,
  29. * without modification.
  30. * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  31. * substantially similar to the "NO WARRANTY" disclaimer below
  32. * ("Disclaimer") and any redistribution must be conditioned upon
  33. * including a substantially similar Disclaimer requirement for further
  34. * binary redistribution.
  35. * 3. Neither the names of the above-listed copyright holders nor the names
  36. * of any contributors may be used to endorse or promote products derived
  37. * from this software without specific prior written permission.
  38. *
  39. * Alternatively, this software may be distributed under the terms of the
  40. * GNU General Public License ("GPL") version 2 as published by the Free
  41. * Software Foundation.
  42. *
  43. * NO WARRANTY
  44. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  45. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  46. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  47. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  48. * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  52. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  53. * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  54. * POSSIBILITY OF SUCH DAMAGES.
  55. *
  56. * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.h#151 $
  57. *
  58. */
  59. #ifndef _AIC7XXX_LINUX_H_
  60. #define _AIC7XXX_LINUX_H_
  61. #include <linux/types.h>
  62. #include <linux/blkdev.h>
  63. #include <linux/delay.h>
  64. #include <linux/ioport.h>
  65. #include <linux/pci.h>
  66. #include <linux/interrupt.h>
  67. #include <linux/module.h>
  68. #include <linux/slab.h>
  69. #include <asm/byteorder.h>
  70. #include <asm/io.h>
  71. #include <scsi/scsi.h>
  72. #include <scsi/scsi_cmnd.h>
  73. #include <scsi/scsi_eh.h>
  74. #include <scsi/scsi_device.h>
  75. #include <scsi/scsi_host.h>
  76. #include <scsi/scsi_tcq.h>
  77. #include <scsi/scsi_transport.h>
  78. #include <scsi/scsi_transport_spi.h>
  79. /* Core SCSI definitions */
  80. #define AIC_LIB_PREFIX ahc
  81. /* Name space conflict with BSD queue macros */
  82. #ifdef LIST_HEAD
  83. #undef LIST_HEAD
  84. #endif
  85. #include "cam.h"
  86. #include "queue.h"
  87. #include "scsi_message.h"
  88. #include "aiclib.h"
  89. /*********************************** Debugging ********************************/
  90. #ifdef CONFIG_AIC7XXX_DEBUG_ENABLE
  91. #ifdef CONFIG_AIC7XXX_DEBUG_MASK
  92. #define AHC_DEBUG 1
  93. #define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK
  94. #else
  95. /*
  96. * Compile in debugging code, but do not enable any printfs.
  97. */
  98. #define AHC_DEBUG 1
  99. #endif
  100. /* No debugging code. */
  101. #endif
  102. /************************* Forward Declarations *******************************/
  103. struct ahc_softc;
  104. typedef struct pci_dev *ahc_dev_softc_t;
  105. typedef struct scsi_cmnd *ahc_io_ctx_t;
  106. /******************************* Byte Order ***********************************/
  107. #define ahc_htobe16(x) cpu_to_be16(x)
  108. #define ahc_htobe32(x) cpu_to_be32(x)
  109. #define ahc_htobe64(x) cpu_to_be64(x)
  110. #define ahc_htole16(x) cpu_to_le16(x)
  111. #define ahc_htole32(x) cpu_to_le32(x)
  112. #define ahc_htole64(x) cpu_to_le64(x)
  113. #define ahc_be16toh(x) be16_to_cpu(x)
  114. #define ahc_be32toh(x) be32_to_cpu(x)
  115. #define ahc_be64toh(x) be64_to_cpu(x)
  116. #define ahc_le16toh(x) le16_to_cpu(x)
  117. #define ahc_le32toh(x) le32_to_cpu(x)
  118. #define ahc_le64toh(x) le64_to_cpu(x)
  119. /************************* Configuration Data *********************************/
  120. extern u_int aic7xxx_no_probe;
  121. extern u_int aic7xxx_allow_memio;
  122. extern struct scsi_host_template aic7xxx_driver_template;
  123. /***************************** Bus Space/DMA **********************************/
  124. typedef uint32_t bus_size_t;
  125. typedef enum {
  126. BUS_SPACE_MEMIO,
  127. BUS_SPACE_PIO
  128. } bus_space_tag_t;
  129. typedef union {
  130. u_long ioport;
  131. volatile uint8_t __iomem *maddr;
  132. } bus_space_handle_t;
  133. typedef struct bus_dma_segment
  134. {
  135. dma_addr_t ds_addr;
  136. bus_size_t ds_len;
  137. } bus_dma_segment_t;
  138. struct ahc_linux_dma_tag
  139. {
  140. bus_size_t alignment;
  141. bus_size_t boundary;
  142. bus_size_t maxsize;
  143. };
  144. typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
  145. typedef dma_addr_t bus_dmamap_t;
  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. #define BUS_DMA_WAITOK 0x0
  149. #define BUS_DMA_NOWAIT 0x1
  150. #define BUS_DMA_ALLOCNOW 0x2
  151. #define BUS_DMA_LOAD_SEGS 0x4 /*
  152. * Argument is an S/G list not
  153. * a single buffer.
  154. */
  155. #define BUS_SPACE_MAXADDR 0xFFFFFFFF
  156. #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
  157. #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
  158. int ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/,
  159. bus_size_t /*alignment*/, bus_size_t /*boundary*/,
  160. dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
  161. bus_dma_filter_t*/*filter*/, void */*filterarg*/,
  162. bus_size_t /*maxsize*/, int /*nsegments*/,
  163. bus_size_t /*maxsegsz*/, int /*flags*/,
  164. bus_dma_tag_t */*dma_tagp*/);
  165. void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/);
  166. int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
  167. void** /*vaddr*/, int /*flags*/,
  168. bus_dmamap_t* /*mapp*/);
  169. void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
  170. void* /*vaddr*/, bus_dmamap_t /*map*/);
  171. void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/,
  172. bus_dmamap_t /*map*/);
  173. int ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t /*dmat*/,
  174. bus_dmamap_t /*map*/, void * /*buf*/,
  175. bus_size_t /*buflen*/, bus_dmamap_callback_t *,
  176. void */*callback_arg*/, int /*flags*/);
  177. int ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t);
  178. /*
  179. * Operations performed by ahc_dmamap_sync().
  180. */
  181. #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
  182. #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
  183. #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
  184. #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
  185. /*
  186. * XXX
  187. * ahc_dmamap_sync is only used on buffers allocated with
  188. * the pci_alloc_consistent() API. Although I'm not sure how
  189. * this works on architectures with a write buffer, Linux does
  190. * not have an API to sync "coherent" memory. Perhaps we need
  191. * to do an mb()?
  192. */
  193. #define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op)
  194. /********************************** Includes **********************************/
  195. #ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT
  196. #define AIC_DEBUG_REGISTERS 1
  197. #else
  198. #define AIC_DEBUG_REGISTERS 0
  199. #endif
  200. #include "aic7xxx.h"
  201. /***************************** Timer Facilities *******************************/
  202. static __inline void
  203. ahc_scb_timer_reset(struct scb *scb, u_int usec)
  204. {
  205. }
  206. /***************************** SMP support ************************************/
  207. #include <linux/spinlock.h>
  208. #define AIC7XXX_DRIVER_VERSION "7.0"
  209. /*************************** Device Data Structures ***************************/
  210. /*
  211. * A per probed device structure used to deal with some error recovery
  212. * scenarios that the Linux mid-layer code just doesn't know how to
  213. * handle. The structure allocated for a device only becomes persistent
  214. * after a successfully completed inquiry command to the target when
  215. * that inquiry data indicates a lun is present.
  216. */
  217. typedef enum {
  218. AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
  219. AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
  220. AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
  221. AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
  222. } ahc_linux_dev_flags;
  223. struct ahc_linux_device {
  224. /*
  225. * The number of transactions currently
  226. * queued to the device.
  227. */
  228. int active;
  229. /*
  230. * The currently allowed number of
  231. * transactions that can be queued to
  232. * the device. Must be signed for
  233. * conversion from tagged to untagged
  234. * mode where the device may have more
  235. * than one outstanding active transaction.
  236. */
  237. int openings;
  238. /*
  239. * A positive count indicates that this
  240. * device's queue is halted.
  241. */
  242. u_int qfrozen;
  243. /*
  244. * Cumulative command counter.
  245. */
  246. u_long commands_issued;
  247. /*
  248. * The number of tagged transactions when
  249. * running at our current opening level
  250. * that have been successfully received by
  251. * this device since the last QUEUE FULL.
  252. */
  253. u_int tag_success_count;
  254. #define AHC_TAG_SUCCESS_INTERVAL 50
  255. ahc_linux_dev_flags flags;
  256. /*
  257. * The high limit for the tags variable.
  258. */
  259. u_int maxtags;
  260. /*
  261. * The computed number of tags outstanding
  262. * at the time of the last QUEUE FULL event.
  263. */
  264. u_int tags_on_last_queuefull;
  265. /*
  266. * How many times we have seen a queue full
  267. * with the same number of tags. This is used
  268. * to stop our adaptive queue depth algorithm
  269. * on devices with a fixed number of tags.
  270. */
  271. u_int last_queuefull_same_count;
  272. #define AHC_LOCK_TAGS_COUNT 50
  273. /*
  274. * How many transactions have been queued
  275. * without the device going idle. We use
  276. * this statistic to determine when to issue
  277. * an ordered tag to prevent transaction
  278. * starvation. This statistic is only updated
  279. * if the AHC_DEV_PERIODIC_OTAG flag is set
  280. * on this device.
  281. */
  282. u_int commands_since_idle_or_otag;
  283. #define AHC_OTAG_THRESH 500
  284. };
  285. /********************* Definitions Required by the Core ***********************/
  286. /*
  287. * Number of SG segments we require. So long as the S/G segments for
  288. * a particular transaction are allocated in a physically contiguous
  289. * manner and are allocated below 4GB, the number of S/G segments is
  290. * unrestricted.
  291. */
  292. #define AHC_NSEG 128
  293. /*
  294. * Per-SCB OSM storage.
  295. */
  296. struct scb_platform_data {
  297. struct ahc_linux_device *dev;
  298. dma_addr_t buf_busaddr;
  299. uint32_t xfer_len;
  300. uint32_t sense_resid; /* Auto-Sense residual */
  301. };
  302. /*
  303. * Define a structure used for each host adapter. All members are
  304. * aligned on a boundary >= the size of the member to honor the
  305. * alignment restrictions of the various platforms supported by
  306. * this driver.
  307. */
  308. struct ahc_platform_data {
  309. /*
  310. * Fields accessed from interrupt context.
  311. */
  312. struct scsi_target *starget[AHC_NUM_TARGETS];
  313. spinlock_t spin_lock;
  314. u_int qfrozen;
  315. struct completion *eh_done;
  316. struct Scsi_Host *host; /* pointer to scsi host */
  317. #define AHC_LINUX_NOIRQ ((uint32_t)~0)
  318. uint32_t irq; /* IRQ for this adapter */
  319. uint32_t bios_address;
  320. uint32_t mem_busaddr; /* Mem Base Addr */
  321. };
  322. /************************** OS Utility Wrappers *******************************/
  323. #define printf printk
  324. #define M_NOWAIT GFP_ATOMIC
  325. #define M_WAITOK 0
  326. #define malloc(size, type, flags) kmalloc(size, flags)
  327. #define free(ptr, type) kfree(ptr)
  328. static __inline void ahc_delay(long);
  329. static __inline void
  330. ahc_delay(long usec)
  331. {
  332. /*
  333. * udelay on Linux can have problems for
  334. * multi-millisecond waits. Wait at most
  335. * 1024us per call.
  336. */
  337. while (usec > 0) {
  338. udelay(usec % 1024);
  339. usec -= 1024;
  340. }
  341. }
  342. /***************************** Low Level I/O **********************************/
  343. static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port);
  344. static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
  345. static __inline void ahc_outsb(struct ahc_softc * ahc, long port,
  346. uint8_t *, int count);
  347. static __inline void ahc_insb(struct ahc_softc * ahc, long port,
  348. uint8_t *, int count);
  349. static __inline uint8_t
  350. ahc_inb(struct ahc_softc * ahc, long port)
  351. {
  352. uint8_t x;
  353. if (ahc->tag == BUS_SPACE_MEMIO) {
  354. x = readb(ahc->bsh.maddr + port);
  355. } else {
  356. x = inb(ahc->bsh.ioport + port);
  357. }
  358. mb();
  359. return (x);
  360. }
  361. static __inline void
  362. ahc_outb(struct ahc_softc * ahc, long port, uint8_t val)
  363. {
  364. if (ahc->tag == BUS_SPACE_MEMIO) {
  365. writeb(val, ahc->bsh.maddr + port);
  366. } else {
  367. outb(val, ahc->bsh.ioport + port);
  368. }
  369. mb();
  370. }
  371. static __inline void
  372. ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
  373. {
  374. int i;
  375. /*
  376. * There is probably a more efficient way to do this on Linux
  377. * but we don't use this for anything speed critical and this
  378. * should work.
  379. */
  380. for (i = 0; i < count; i++)
  381. ahc_outb(ahc, port, *array++);
  382. }
  383. static __inline void
  384. ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
  385. {
  386. int i;
  387. /*
  388. * There is probably a more efficient way to do this on Linux
  389. * but we don't use this for anything speed critical and this
  390. * should work.
  391. */
  392. for (i = 0; i < count; i++)
  393. *array++ = ahc_inb(ahc, port);
  394. }
  395. /**************************** Initialization **********************************/
  396. int ahc_linux_register_host(struct ahc_softc *,
  397. struct scsi_host_template *);
  398. /*************************** Pretty Printing **********************************/
  399. struct info_str {
  400. char *buffer;
  401. int length;
  402. off_t offset;
  403. int pos;
  404. };
  405. void ahc_format_transinfo(struct info_str *info,
  406. struct ahc_transinfo *tinfo);
  407. /******************************** Locking *************************************/
  408. /* Lock protecting internal data structures */
  409. static __inline void
  410. ahc_lockinit(struct ahc_softc *ahc)
  411. {
  412. spin_lock_init(&ahc->platform_data->spin_lock);
  413. }
  414. static __inline void
  415. ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
  416. {
  417. spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
  418. }
  419. static __inline void
  420. ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
  421. {
  422. spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
  423. }
  424. /******************************* PCI Definitions ******************************/
  425. /*
  426. * PCIM_xxx: mask to locate subfield in register
  427. * PCIR_xxx: config register offset
  428. * PCIC_xxx: device class
  429. * PCIS_xxx: device subclass
  430. * PCIP_xxx: device programming interface
  431. * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
  432. * PCID_xxx: device ID
  433. */
  434. #define PCIR_DEVVENDOR 0x00
  435. #define PCIR_VENDOR 0x00
  436. #define PCIR_DEVICE 0x02
  437. #define PCIR_COMMAND 0x04
  438. #define PCIM_CMD_PORTEN 0x0001
  439. #define PCIM_CMD_MEMEN 0x0002
  440. #define PCIM_CMD_BUSMASTEREN 0x0004
  441. #define PCIM_CMD_MWRICEN 0x0010
  442. #define PCIM_CMD_PERRESPEN 0x0040
  443. #define PCIM_CMD_SERRESPEN 0x0100
  444. #define PCIR_STATUS 0x06
  445. #define PCIR_REVID 0x08
  446. #define PCIR_PROGIF 0x09
  447. #define PCIR_SUBCLASS 0x0a
  448. #define PCIR_CLASS 0x0b
  449. #define PCIR_CACHELNSZ 0x0c
  450. #define PCIR_LATTIMER 0x0d
  451. #define PCIR_HEADERTYPE 0x0e
  452. #define PCIM_MFDEV 0x80
  453. #define PCIR_BIST 0x0f
  454. #define PCIR_CAP_PTR 0x34
  455. /* config registers for header type 0 devices */
  456. #define PCIR_MAPS 0x10
  457. #define PCIR_SUBVEND_0 0x2c
  458. #define PCIR_SUBDEV_0 0x2e
  459. typedef enum
  460. {
  461. AHC_POWER_STATE_D0,
  462. AHC_POWER_STATE_D1,
  463. AHC_POWER_STATE_D2,
  464. AHC_POWER_STATE_D3
  465. } ahc_power_state;
  466. /**************************** VL/EISA Routines ********************************/
  467. #ifdef CONFIG_EISA
  468. int ahc_linux_eisa_init(void);
  469. void ahc_linux_eisa_exit(void);
  470. int aic7770_map_registers(struct ahc_softc *ahc,
  471. u_int port);
  472. int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
  473. #else
  474. static inline int ahc_linux_eisa_init(void) {
  475. return -ENODEV;
  476. }
  477. static inline void ahc_linux_eisa_exit(void) {
  478. }
  479. #endif
  480. /******************************* PCI Routines *********************************/
  481. #ifdef CONFIG_PCI
  482. int ahc_linux_pci_init(void);
  483. void ahc_linux_pci_exit(void);
  484. int ahc_pci_map_registers(struct ahc_softc *ahc);
  485. int ahc_pci_map_int(struct ahc_softc *ahc);
  486. static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
  487. int reg, int width);
  488. static __inline uint32_t
  489. ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
  490. {
  491. switch (width) {
  492. case 1:
  493. {
  494. uint8_t retval;
  495. pci_read_config_byte(pci, reg, &retval);
  496. return (retval);
  497. }
  498. case 2:
  499. {
  500. uint16_t retval;
  501. pci_read_config_word(pci, reg, &retval);
  502. return (retval);
  503. }
  504. case 4:
  505. {
  506. uint32_t retval;
  507. pci_read_config_dword(pci, reg, &retval);
  508. return (retval);
  509. }
  510. default:
  511. panic("ahc_pci_read_config: Read size too big");
  512. /* NOTREACHED */
  513. return (0);
  514. }
  515. }
  516. static __inline void ahc_pci_write_config(ahc_dev_softc_t pci,
  517. int reg, uint32_t value,
  518. int width);
  519. static __inline void
  520. ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
  521. {
  522. switch (width) {
  523. case 1:
  524. pci_write_config_byte(pci, reg, value);
  525. break;
  526. case 2:
  527. pci_write_config_word(pci, reg, value);
  528. break;
  529. case 4:
  530. pci_write_config_dword(pci, reg, value);
  531. break;
  532. default:
  533. panic("ahc_pci_write_config: Write size too big");
  534. /* NOTREACHED */
  535. }
  536. }
  537. static __inline int ahc_get_pci_function(ahc_dev_softc_t);
  538. static __inline int
  539. ahc_get_pci_function(ahc_dev_softc_t pci)
  540. {
  541. return (PCI_FUNC(pci->devfn));
  542. }
  543. static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
  544. static __inline int
  545. ahc_get_pci_slot(ahc_dev_softc_t pci)
  546. {
  547. return (PCI_SLOT(pci->devfn));
  548. }
  549. static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
  550. static __inline int
  551. ahc_get_pci_bus(ahc_dev_softc_t pci)
  552. {
  553. return (pci->bus->number);
  554. }
  555. #else
  556. static inline int ahc_linux_pci_init(void) {
  557. return 0;
  558. }
  559. static inline void ahc_linux_pci_exit(void) {
  560. }
  561. #endif
  562. static __inline void ahc_flush_device_writes(struct ahc_softc *);
  563. static __inline void
  564. ahc_flush_device_writes(struct ahc_softc *ahc)
  565. {
  566. /* XXX Is this sufficient for all architectures??? */
  567. ahc_inb(ahc, INTSTAT);
  568. }
  569. /**************************** Proc FS Support *********************************/
  570. int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
  571. off_t, int, int);
  572. /*************************** Domain Validation ********************************/
  573. /*********************** Transaction Access Wrappers *************************/
  574. static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
  575. static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
  576. static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
  577. static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
  578. static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
  579. static __inline uint32_t ahc_get_transaction_status(struct scb *);
  580. static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
  581. static __inline uint32_t ahc_get_scsi_status(struct scb *);
  582. static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
  583. static __inline u_long ahc_get_transfer_length(struct scb *);
  584. static __inline int ahc_get_transfer_dir(struct scb *);
  585. static __inline void ahc_set_residual(struct scb *, u_long);
  586. static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
  587. static __inline u_long ahc_get_residual(struct scb *);
  588. static __inline u_long ahc_get_sense_residual(struct scb *);
  589. static __inline int ahc_perform_autosense(struct scb *);
  590. static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
  591. struct scb *);
  592. static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
  593. struct ahc_devinfo *);
  594. static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
  595. struct scb *scb);
  596. static __inline void ahc_freeze_scb(struct scb *scb);
  597. static __inline
  598. void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
  599. {
  600. cmd->result &= ~(CAM_STATUS_MASK << 16);
  601. cmd->result |= status << 16;
  602. }
  603. static __inline
  604. void ahc_set_transaction_status(struct scb *scb, uint32_t status)
  605. {
  606. ahc_cmd_set_transaction_status(scb->io_ctx,status);
  607. }
  608. static __inline
  609. void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
  610. {
  611. cmd->result &= ~0xFFFF;
  612. cmd->result |= status;
  613. }
  614. static __inline
  615. void ahc_set_scsi_status(struct scb *scb, uint32_t status)
  616. {
  617. ahc_cmd_set_scsi_status(scb->io_ctx, status);
  618. }
  619. static __inline
  620. uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
  621. {
  622. return ((cmd->result >> 16) & CAM_STATUS_MASK);
  623. }
  624. static __inline
  625. uint32_t ahc_get_transaction_status(struct scb *scb)
  626. {
  627. return (ahc_cmd_get_transaction_status(scb->io_ctx));
  628. }
  629. static __inline
  630. uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
  631. {
  632. return (cmd->result & 0xFFFF);
  633. }
  634. static __inline
  635. uint32_t ahc_get_scsi_status(struct scb *scb)
  636. {
  637. return (ahc_cmd_get_scsi_status(scb->io_ctx));
  638. }
  639. static __inline
  640. void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
  641. {
  642. /*
  643. * Nothing to do for linux as the incoming transaction
  644. * has no concept of tag/non tagged, etc.
  645. */
  646. }
  647. static __inline
  648. u_long ahc_get_transfer_length(struct scb *scb)
  649. {
  650. return (scb->platform_data->xfer_len);
  651. }
  652. static __inline
  653. int ahc_get_transfer_dir(struct scb *scb)
  654. {
  655. return (scb->io_ctx->sc_data_direction);
  656. }
  657. static __inline
  658. void ahc_set_residual(struct scb *scb, u_long resid)
  659. {
  660. scsi_set_resid(scb->io_ctx, resid);
  661. }
  662. static __inline
  663. void ahc_set_sense_residual(struct scb *scb, u_long resid)
  664. {
  665. scb->platform_data->sense_resid = resid;
  666. }
  667. static __inline
  668. u_long ahc_get_residual(struct scb *scb)
  669. {
  670. return scsi_get_resid(scb->io_ctx);
  671. }
  672. static __inline
  673. u_long ahc_get_sense_residual(struct scb *scb)
  674. {
  675. return (scb->platform_data->sense_resid);
  676. }
  677. static __inline
  678. int ahc_perform_autosense(struct scb *scb)
  679. {
  680. /*
  681. * We always perform autosense in Linux.
  682. * On other platforms this is set on a
  683. * per-transaction basis.
  684. */
  685. return (1);
  686. }
  687. static __inline uint32_t
  688. ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
  689. {
  690. return (sizeof(struct scsi_sense_data));
  691. }
  692. static __inline void
  693. ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
  694. struct ahc_devinfo *devinfo)
  695. {
  696. /* Nothing to do here for linux */
  697. }
  698. static __inline void
  699. ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
  700. {
  701. }
  702. int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
  703. void ahc_platform_free(struct ahc_softc *ahc);
  704. void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
  705. static __inline void
  706. ahc_freeze_scb(struct scb *scb)
  707. {
  708. if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
  709. scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
  710. scb->platform_data->dev->qfrozen++;
  711. }
  712. }
  713. void ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
  714. struct ahc_devinfo *devinfo, ahc_queue_alg);
  715. int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
  716. char channel, int lun, u_int tag,
  717. role_t role, uint32_t status);
  718. irqreturn_t
  719. ahc_linux_isr(int irq, void *dev_id);
  720. void ahc_platform_flushwork(struct ahc_softc *ahc);
  721. void ahc_done(struct ahc_softc*, struct scb*);
  722. void ahc_send_async(struct ahc_softc *, char channel,
  723. u_int target, u_int lun, ac_code);
  724. void ahc_print_path(struct ahc_softc *, struct scb *);
  725. void ahc_platform_dump_card_state(struct ahc_softc *ahc);
  726. #ifdef CONFIG_PCI
  727. #define AHC_PCI_CONFIG 1
  728. #else
  729. #define AHC_PCI_CONFIG 0
  730. #endif
  731. #define bootverbose aic7xxx_verbose
  732. extern u_int aic7xxx_verbose;
  733. #endif /* _AIC7XXX_LINUX_H_ */