ide.h 41 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345
  1. #ifndef _IDE_H
  2. #define _IDE_H
  3. /*
  4. * linux/include/linux/ide.h
  5. *
  6. * Copyright (C) 1994-2002 Linus Torvalds & authors
  7. */
  8. #include <linux/init.h>
  9. #include <linux/ioport.h>
  10. #include <linux/hdreg.h>
  11. #include <linux/hdsmart.h>
  12. #include <linux/blkdev.h>
  13. #include <linux/proc_fs.h>
  14. #include <linux/interrupt.h>
  15. #include <linux/bitops.h>
  16. #include <linux/bio.h>
  17. #include <linux/device.h>
  18. #include <linux/pci.h>
  19. #include <linux/completion.h>
  20. #ifdef CONFIG_BLK_DEV_IDEACPI
  21. #include <acpi/acpi.h>
  22. #endif
  23. #include <asm/byteorder.h>
  24. #include <asm/system.h>
  25. #include <asm/io.h>
  26. #include <asm/semaphore.h>
  27. #include <asm/mutex.h>
  28. #if defined(CRIS) || defined(FRV)
  29. # define SUPPORT_VLB_SYNC 0
  30. #else
  31. # define SUPPORT_VLB_SYNC 1
  32. #endif
  33. /*
  34. * Used to indicate "no IRQ", should be a value that cannot be an IRQ
  35. * number.
  36. */
  37. #define IDE_NO_IRQ (-1)
  38. typedef unsigned char byte; /* used everywhere */
  39. /*
  40. * Probably not wise to fiddle with these
  41. */
  42. #define ERROR_MAX 8 /* Max read/write errors per sector */
  43. #define ERROR_RESET 3 /* Reset controller every 4th retry */
  44. #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
  45. /*
  46. * Tune flags
  47. */
  48. #define IDE_TUNE_NOAUTO 2
  49. #define IDE_TUNE_AUTO 1
  50. #define IDE_TUNE_DEFAULT 0
  51. /*
  52. * state flags
  53. */
  54. #define DMA_PIO_RETRY 1 /* retrying in PIO */
  55. #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
  56. #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
  57. /*
  58. * Definitions for accessing IDE controller registers
  59. */
  60. #define IDE_NR_PORTS (10)
  61. #define IDE_DATA_OFFSET (0)
  62. #define IDE_ERROR_OFFSET (1)
  63. #define IDE_NSECTOR_OFFSET (2)
  64. #define IDE_SECTOR_OFFSET (3)
  65. #define IDE_LCYL_OFFSET (4)
  66. #define IDE_HCYL_OFFSET (5)
  67. #define IDE_SELECT_OFFSET (6)
  68. #define IDE_STATUS_OFFSET (7)
  69. #define IDE_CONTROL_OFFSET (8)
  70. #define IDE_IRQ_OFFSET (9)
  71. #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
  72. #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
  73. #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
  74. #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
  75. #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
  76. #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
  77. #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
  78. #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
  79. #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
  80. #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
  81. #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
  82. #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
  83. #define IDE_FEATURE_REG IDE_ERROR_REG
  84. #define IDE_COMMAND_REG IDE_STATUS_REG
  85. #define IDE_ALTSTATUS_REG IDE_CONTROL_REG
  86. #define IDE_IREASON_REG IDE_NSECTOR_REG
  87. #define IDE_BCOUNTL_REG IDE_LCYL_REG
  88. #define IDE_BCOUNTH_REG IDE_HCYL_REG
  89. #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
  90. #define BAD_R_STAT (BUSY_STAT | ERR_STAT)
  91. #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
  92. #define BAD_STAT (BAD_R_STAT | DRQ_STAT)
  93. #define DRIVE_READY (READY_STAT | SEEK_STAT)
  94. #define DATA_READY (DRQ_STAT)
  95. #define BAD_CRC (ABRT_ERR | ICRC_ERR)
  96. #define SATA_NR_PORTS (3) /* 16 possible ?? */
  97. #define SATA_STATUS_OFFSET (0)
  98. #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
  99. #define SATA_ERROR_OFFSET (1)
  100. #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
  101. #define SATA_CONTROL_OFFSET (2)
  102. #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
  103. #define SATA_MISC_OFFSET (0)
  104. #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
  105. #define SATA_PHY_OFFSET (1)
  106. #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
  107. #define SATA_IEN_OFFSET (2)
  108. #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
  109. /*
  110. * Our Physical Region Descriptor (PRD) table should be large enough
  111. * to handle the biggest I/O request we are likely to see. Since requests
  112. * can have no more than 256 sectors, and since the typical blocksize is
  113. * two or more sectors, we could get by with a limit of 128 entries here for
  114. * the usual worst case. Most requests seem to include some contiguous blocks,
  115. * further reducing the number of table entries required.
  116. *
  117. * The driver reverts to PIO mode for individual requests that exceed
  118. * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
  119. * 100% of all crazy scenarios here is not necessary.
  120. *
  121. * As it turns out though, we must allocate a full 4KB page for this,
  122. * so the two PRD tables (ide0 & ide1) will each get half of that,
  123. * allowing each to have about 256 entries (8 bytes each) from this.
  124. */
  125. #define PRD_BYTES 8
  126. #define PRD_ENTRIES 256
  127. /*
  128. * Some more useful definitions
  129. */
  130. #define PARTN_BITS 6 /* number of minor dev bits for partitions */
  131. #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
  132. #define SECTOR_SIZE 512
  133. #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
  134. #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
  135. /*
  136. * Timeouts for various operations:
  137. */
  138. #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
  139. #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
  140. #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
  141. #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
  142. #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
  143. #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
  144. /*
  145. * Check for an interrupt and acknowledge the interrupt status
  146. */
  147. struct hwif_s;
  148. typedef int (ide_ack_intr_t)(struct hwif_s *);
  149. /*
  150. * hwif_chipset_t is used to keep track of the specific hardware
  151. * chipset used by each IDE interface, if known.
  152. */
  153. enum { ide_unknown, ide_generic, ide_pci,
  154. ide_cmd640, ide_dtc2278, ide_ali14xx,
  155. ide_qd65xx, ide_umc8672, ide_ht6560b,
  156. ide_rz1000, ide_trm290,
  157. ide_cmd646, ide_cy82c693, ide_4drives,
  158. ide_pmac, ide_etrax100, ide_acorn,
  159. ide_au1xxx, ide_forced
  160. };
  161. typedef u8 hwif_chipset_t;
  162. /*
  163. * Structure to hold all information about the location of this port
  164. */
  165. typedef struct hw_regs_s {
  166. unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
  167. int irq; /* our irq number */
  168. ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
  169. hwif_chipset_t chipset;
  170. struct device *dev;
  171. } hw_regs_t;
  172. struct hwif_s * ide_find_port(unsigned long);
  173. int ide_register_hw(hw_regs_t *, void (*)(struct hwif_s *), int,
  174. struct hwif_s **);
  175. void ide_setup_ports( hw_regs_t *hw,
  176. unsigned long base,
  177. int *offsets,
  178. unsigned long ctrl,
  179. unsigned long intr,
  180. ide_ack_intr_t *ack_intr,
  181. #if 0
  182. ide_io_ops_t *iops,
  183. #endif
  184. int irq);
  185. static inline void ide_std_init_ports(hw_regs_t *hw,
  186. unsigned long io_addr,
  187. unsigned long ctl_addr)
  188. {
  189. unsigned int i;
  190. for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
  191. hw->io_ports[i] = io_addr++;
  192. hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
  193. }
  194. #include <asm/ide.h>
  195. #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
  196. #undef MAX_HWIFS
  197. #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
  198. #endif
  199. /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
  200. #ifndef IDE_ARCH_OBSOLETE_DEFAULTS
  201. # define ide_default_io_base(index) (0)
  202. # define ide_default_irq(base) (0)
  203. # define ide_init_default_irq(base) (0)
  204. #endif
  205. #ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
  206. static inline void ide_init_hwif_ports(hw_regs_t *hw,
  207. unsigned long io_addr,
  208. unsigned long ctl_addr,
  209. int *irq)
  210. {
  211. if (!ctl_addr)
  212. ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr));
  213. else
  214. ide_std_init_ports(hw, io_addr, ctl_addr);
  215. if (irq)
  216. *irq = 0;
  217. hw->io_ports[IDE_IRQ_OFFSET] = 0;
  218. #ifdef CONFIG_PPC32
  219. if (ppc_ide_md.ide_init_hwif)
  220. ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq);
  221. #endif
  222. }
  223. #else
  224. static inline void ide_init_hwif_ports(hw_regs_t *hw,
  225. unsigned long io_addr,
  226. unsigned long ctl_addr,
  227. int *irq)
  228. {
  229. if (io_addr || ctl_addr)
  230. printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
  231. }
  232. #endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
  233. /* Currently only m68k, apus and m8xx need it */
  234. #ifndef IDE_ARCH_ACK_INTR
  235. # define ide_ack_intr(hwif) (1)
  236. #endif
  237. /* Currently only Atari needs it */
  238. #ifndef IDE_ARCH_LOCK
  239. # define ide_release_lock() do {} while (0)
  240. # define ide_get_lock(hdlr, data) do {} while (0)
  241. #endif /* IDE_ARCH_LOCK */
  242. /*
  243. * Now for the data we need to maintain per-drive: ide_drive_t
  244. */
  245. #define ide_scsi 0x21
  246. #define ide_disk 0x20
  247. #define ide_optical 0x7
  248. #define ide_cdrom 0x5
  249. #define ide_tape 0x1
  250. #define ide_floppy 0x0
  251. /*
  252. * Special Driver Flags
  253. *
  254. * set_geometry : respecify drive geometry
  255. * recalibrate : seek to cyl 0
  256. * set_multmode : set multmode count
  257. * set_tune : tune interface for drive
  258. * serviced : service command
  259. * reserved : unused
  260. */
  261. typedef union {
  262. unsigned all : 8;
  263. struct {
  264. unsigned set_geometry : 1;
  265. unsigned recalibrate : 1;
  266. unsigned set_multmode : 1;
  267. unsigned set_tune : 1;
  268. unsigned serviced : 1;
  269. unsigned reserved : 3;
  270. } b;
  271. } special_t;
  272. /*
  273. * ATA DATA Register Special.
  274. * ATA NSECTOR Count Register().
  275. * ATAPI Byte Count Register.
  276. */
  277. typedef union {
  278. unsigned all :16;
  279. struct {
  280. #if defined(__LITTLE_ENDIAN_BITFIELD)
  281. unsigned low :8; /* LSB */
  282. unsigned high :8; /* MSB */
  283. #elif defined(__BIG_ENDIAN_BITFIELD)
  284. unsigned high :8; /* MSB */
  285. unsigned low :8; /* LSB */
  286. #else
  287. #error "Please fix <asm/byteorder.h>"
  288. #endif
  289. } b;
  290. } ata_nsector_t, ata_data_t, atapi_bcount_t;
  291. /*
  292. * ATA-IDE Select Register, aka Device-Head
  293. *
  294. * head : always zeros here
  295. * unit : drive select number: 0/1
  296. * bit5 : always 1
  297. * lba : using LBA instead of CHS
  298. * bit7 : always 1
  299. */
  300. typedef union {
  301. unsigned all : 8;
  302. struct {
  303. #if defined(__LITTLE_ENDIAN_BITFIELD)
  304. unsigned head : 4;
  305. unsigned unit : 1;
  306. unsigned bit5 : 1;
  307. unsigned lba : 1;
  308. unsigned bit7 : 1;
  309. #elif defined(__BIG_ENDIAN_BITFIELD)
  310. unsigned bit7 : 1;
  311. unsigned lba : 1;
  312. unsigned bit5 : 1;
  313. unsigned unit : 1;
  314. unsigned head : 4;
  315. #else
  316. #error "Please fix <asm/byteorder.h>"
  317. #endif
  318. } b;
  319. } select_t, ata_select_t;
  320. /*
  321. * ATAPI Interrupt Reason Register.
  322. *
  323. * cod : Information transferred is command (1) or data (0)
  324. * io : The device requests us to read (1) or write (0)
  325. * reserved : Reserved
  326. */
  327. typedef union {
  328. unsigned all :8;
  329. struct {
  330. #if defined(__LITTLE_ENDIAN_BITFIELD)
  331. unsigned cod :1;
  332. unsigned io :1;
  333. unsigned reserved :6;
  334. #elif defined(__BIG_ENDIAN_BITFIELD)
  335. unsigned reserved :6;
  336. unsigned io :1;
  337. unsigned cod :1;
  338. #else
  339. #error "Please fix <asm/byteorder.h>"
  340. #endif
  341. } b;
  342. } atapi_ireason_t;
  343. /*
  344. * Status returned from various ide_ functions
  345. */
  346. typedef enum {
  347. ide_stopped, /* no drive operation was started */
  348. ide_started, /* a drive operation was started, handler was set */
  349. } ide_startstop_t;
  350. struct ide_driver_s;
  351. struct ide_settings_s;
  352. #ifdef CONFIG_BLK_DEV_IDEACPI
  353. struct ide_acpi_drive_link;
  354. struct ide_acpi_hwif_link;
  355. #endif
  356. typedef struct ide_drive_s {
  357. char name[4]; /* drive name, such as "hda" */
  358. char driver_req[10]; /* requests specific driver */
  359. struct request_queue *queue; /* request queue */
  360. struct request *rq; /* current request */
  361. struct ide_drive_s *next; /* circular list of hwgroup drives */
  362. void *driver_data; /* extra driver data */
  363. struct hd_driveid *id; /* drive model identification info */
  364. #ifdef CONFIG_IDE_PROC_FS
  365. struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
  366. struct ide_settings_s *settings;/* /proc/ide/ drive settings */
  367. #endif
  368. struct hwif_s *hwif; /* actually (ide_hwif_t *) */
  369. unsigned long sleep; /* sleep until this time */
  370. unsigned long service_start; /* time we started last request */
  371. unsigned long service_time; /* service time of last request */
  372. unsigned long timeout; /* max time to wait for irq */
  373. special_t special; /* special action flags */
  374. select_t select; /* basic drive/head select reg value */
  375. u8 keep_settings; /* restore settings after drive reset */
  376. u8 using_dma; /* disk is using dma for read/write */
  377. u8 retry_pio; /* retrying dma capable host in pio */
  378. u8 state; /* retry state */
  379. u8 waiting_for_dma; /* dma currently in progress */
  380. u8 unmask; /* okay to unmask other irqs */
  381. u8 bswap; /* byte swap data */
  382. u8 noflush; /* don't attempt flushes */
  383. u8 dsc_overlap; /* DSC overlap */
  384. u8 nice1; /* give potential excess bandwidth */
  385. unsigned present : 1; /* drive is physically present */
  386. unsigned dead : 1; /* device ejected hint */
  387. unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
  388. unsigned noprobe : 1; /* from: hdx=noprobe */
  389. unsigned removable : 1; /* 1 if need to do check_media_change */
  390. unsigned attach : 1; /* needed for removable devices */
  391. unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
  392. unsigned no_unmask : 1; /* disallow setting unmask bit */
  393. unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
  394. unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
  395. unsigned nice0 : 1; /* give obvious excess bandwidth */
  396. unsigned nice2 : 1; /* give a share in our own bandwidth */
  397. unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
  398. unsigned nodma : 1; /* disallow DMA */
  399. unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
  400. unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
  401. unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
  402. unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
  403. unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
  404. unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
  405. unsigned post_reset : 1;
  406. unsigned udma33_warned : 1;
  407. u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
  408. u8 quirk_list; /* considered quirky, set for a specific host */
  409. u8 init_speed; /* transfer rate set at boot */
  410. u8 current_speed; /* current transfer rate set */
  411. u8 desired_speed; /* desired transfer rate set */
  412. u8 dn; /* now wide spread use */
  413. u8 wcache; /* status of write cache */
  414. u8 acoustic; /* acoustic management */
  415. u8 media; /* disk, cdrom, tape, floppy, ... */
  416. u8 ctl; /* "normal" value for IDE_CONTROL_REG */
  417. u8 ready_stat; /* min status value for drive ready */
  418. u8 mult_count; /* current multiple sector setting */
  419. u8 mult_req; /* requested multiple sector setting */
  420. u8 tune_req; /* requested drive tuning setting */
  421. u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
  422. u8 bad_wstat; /* used for ignoring WRERR_STAT */
  423. u8 nowerr; /* used for ignoring WRERR_STAT */
  424. u8 sect0; /* offset of first sector for DM6:DDO */
  425. u8 head; /* "real" number of heads */
  426. u8 sect; /* "real" sectors per track */
  427. u8 bios_head; /* BIOS/fdisk/LILO number of heads */
  428. u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
  429. unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
  430. unsigned int cyl; /* "real" number of cyls */
  431. unsigned int drive_data; /* used by set_pio_mode/selectproc */
  432. unsigned int failures; /* current failure count */
  433. unsigned int max_failures; /* maximum allowed failure count */
  434. u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
  435. u64 capacity64; /* total number of sectors */
  436. int lun; /* logical unit */
  437. int crc_count; /* crc counter to reduce drive speed */
  438. #ifdef CONFIG_BLK_DEV_IDEACPI
  439. struct ide_acpi_drive_link *acpidata;
  440. #endif
  441. struct list_head list;
  442. struct device gendev;
  443. struct completion gendev_rel_comp; /* to deal with device release() */
  444. } ide_drive_t;
  445. #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
  446. #define IDE_CHIPSET_PCI_MASK \
  447. ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
  448. #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
  449. struct ide_port_info;
  450. typedef struct hwif_s {
  451. struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
  452. struct hwif_s *mate; /* other hwif from same PCI chip */
  453. struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
  454. struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
  455. char name[6]; /* name of interface, eg. "ide0" */
  456. /* task file registers for pata and sata */
  457. unsigned long io_ports[IDE_NR_PORTS];
  458. unsigned long sata_scr[SATA_NR_PORTS];
  459. unsigned long sata_misc[SATA_NR_PORTS];
  460. ide_drive_t drives[MAX_DRIVES]; /* drive info */
  461. u8 major; /* our major number */
  462. u8 index; /* 0 for ide0; 1 for ide1; ... */
  463. u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
  464. u8 straight8; /* Alan's straight 8 check */
  465. u8 bus_state; /* power state of the IDE bus */
  466. u32 host_flags;
  467. u8 pio_mask;
  468. u8 ultra_mask;
  469. u8 mwdma_mask;
  470. u8 swdma_mask;
  471. u8 cbl; /* cable type */
  472. hwif_chipset_t chipset; /* sub-module for tuning.. */
  473. struct pci_dev *pci_dev; /* for pci chipsets */
  474. const struct ide_port_info *cds; /* chipset device struct */
  475. ide_ack_intr_t *ack_intr;
  476. void (*rw_disk)(ide_drive_t *, struct request *);
  477. #if 0
  478. ide_hwif_ops_t *hwifops;
  479. #else
  480. /* routine to program host for PIO mode */
  481. void (*set_pio_mode)(ide_drive_t *, const u8);
  482. /* routine to program host for DMA mode */
  483. void (*set_dma_mode)(ide_drive_t *, const u8);
  484. /* tweaks hardware to select drive */
  485. void (*selectproc)(ide_drive_t *);
  486. /* chipset polling based on hba specifics */
  487. int (*reset_poll)(ide_drive_t *);
  488. /* chipset specific changes to default for device-hba resets */
  489. void (*pre_reset)(ide_drive_t *);
  490. /* routine to reset controller after a disk reset */
  491. void (*resetproc)(ide_drive_t *);
  492. /* special interrupt handling for shared pci interrupts */
  493. void (*intrproc)(ide_drive_t *);
  494. /* special host masking for drive selection */
  495. void (*maskproc)(ide_drive_t *, int);
  496. /* check host's drive quirk list */
  497. int (*quirkproc)(ide_drive_t *);
  498. /* driver soft-power interface */
  499. int (*busproc)(ide_drive_t *, int);
  500. #endif
  501. u8 (*mdma_filter)(ide_drive_t *);
  502. u8 (*udma_filter)(ide_drive_t *);
  503. void (*fixup)(struct hwif_s *);
  504. void (*ata_input_data)(ide_drive_t *, void *, u32);
  505. void (*ata_output_data)(ide_drive_t *, void *, u32);
  506. void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
  507. void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
  508. int (*dma_setup)(ide_drive_t *);
  509. void (*dma_exec_cmd)(ide_drive_t *, u8);
  510. void (*dma_start)(ide_drive_t *);
  511. int (*ide_dma_end)(ide_drive_t *drive);
  512. int (*ide_dma_on)(ide_drive_t *drive);
  513. void (*dma_off_quietly)(ide_drive_t *drive);
  514. int (*ide_dma_test_irq)(ide_drive_t *drive);
  515. void (*ide_dma_clear_irq)(ide_drive_t *drive);
  516. void (*dma_host_on)(ide_drive_t *drive);
  517. void (*dma_host_off)(ide_drive_t *drive);
  518. void (*dma_lost_irq)(ide_drive_t *drive);
  519. void (*dma_timeout)(ide_drive_t *drive);
  520. void (*OUTB)(u8 addr, unsigned long port);
  521. void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
  522. void (*OUTW)(u16 addr, unsigned long port);
  523. void (*OUTSW)(unsigned long port, void *addr, u32 count);
  524. void (*OUTSL)(unsigned long port, void *addr, u32 count);
  525. u8 (*INB)(unsigned long port);
  526. u16 (*INW)(unsigned long port);
  527. void (*INSW)(unsigned long port, void *addr, u32 count);
  528. void (*INSL)(unsigned long port, void *addr, u32 count);
  529. /* dma physical region descriptor table (cpu view) */
  530. unsigned int *dmatable_cpu;
  531. /* dma physical region descriptor table (dma view) */
  532. dma_addr_t dmatable_dma;
  533. /* Scatter-gather list used to build the above */
  534. struct scatterlist *sg_table;
  535. int sg_max_nents; /* Maximum number of entries in it */
  536. int sg_nents; /* Current number of entries in it */
  537. int sg_dma_direction; /* dma transfer direction */
  538. /* data phase of the active command (currently only valid for PIO/DMA) */
  539. int data_phase;
  540. unsigned int nsect;
  541. unsigned int nleft;
  542. struct scatterlist *cursg;
  543. unsigned int cursg_ofs;
  544. int rqsize; /* max sectors per request */
  545. int irq; /* our irq number */
  546. unsigned long dma_base; /* base addr for dma ports */
  547. unsigned long dma_command; /* dma command register */
  548. unsigned long dma_vendor1; /* dma vendor 1 register */
  549. unsigned long dma_status; /* dma status register */
  550. unsigned long dma_vendor3; /* dma vendor 3 register */
  551. unsigned long dma_prdtable; /* actual prd table address */
  552. unsigned long config_data; /* for use by chipset-specific code */
  553. unsigned long select_data; /* for use by chipset-specific code */
  554. unsigned long extra_base; /* extra addr for dma ports */
  555. unsigned extra_ports; /* number of extra dma ports */
  556. unsigned noprobe : 1; /* don't probe for this interface */
  557. unsigned present : 1; /* this interface exists */
  558. unsigned hold : 1; /* this interface is always present */
  559. unsigned serialized : 1; /* serialized all channel operation */
  560. unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
  561. unsigned reset : 1; /* reset after probe */
  562. unsigned auto_poll : 1; /* supports nop auto-poll */
  563. unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
  564. unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
  565. unsigned mmio : 1; /* host uses MMIO */
  566. struct device gendev;
  567. struct completion gendev_rel_comp; /* To deal with device release() */
  568. void *hwif_data; /* extra hwif data */
  569. unsigned dma;
  570. #ifdef CONFIG_BLK_DEV_IDEACPI
  571. struct ide_acpi_hwif_link *acpidata;
  572. #endif
  573. } ____cacheline_internodealigned_in_smp ide_hwif_t;
  574. /*
  575. * internal ide interrupt handler type
  576. */
  577. typedef ide_startstop_t (ide_pre_handler_t)(ide_drive_t *, struct request *);
  578. typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
  579. typedef int (ide_expiry_t)(ide_drive_t *);
  580. typedef struct hwgroup_s {
  581. /* irq handler, if active */
  582. ide_startstop_t (*handler)(ide_drive_t *);
  583. /* irq handler, suspended if active */
  584. ide_startstop_t (*handler_save)(ide_drive_t *);
  585. /* BOOL: protects all fields below */
  586. volatile int busy;
  587. /* BOOL: wake us up on timer expiry */
  588. unsigned int sleeping : 1;
  589. /* BOOL: polling active & poll_timeout field valid */
  590. unsigned int polling : 1;
  591. /* BOOL: in a polling reset situation. Must not trigger another reset yet */
  592. unsigned int resetting : 1;
  593. /* current drive */
  594. ide_drive_t *drive;
  595. /* ptr to current hwif in linked-list */
  596. ide_hwif_t *hwif;
  597. /* for pci chipsets */
  598. struct pci_dev *pci_dev;
  599. /* current request */
  600. struct request *rq;
  601. /* failsafe timer */
  602. struct timer_list timer;
  603. /* local copy of current write rq */
  604. struct request wrq;
  605. /* timeout value during long polls */
  606. unsigned long poll_timeout;
  607. /* queried upon timeouts */
  608. int (*expiry)(ide_drive_t *);
  609. /* ide_system_bus_speed */
  610. int pio_clock;
  611. int req_gen;
  612. int req_gen_timer;
  613. unsigned char cmd_buf[4];
  614. } ide_hwgroup_t;
  615. typedef struct ide_driver_s ide_driver_t;
  616. extern struct mutex ide_setting_mtx;
  617. int set_io_32bit(ide_drive_t *, int);
  618. int set_pio_mode(ide_drive_t *, int);
  619. int set_using_dma(ide_drive_t *, int);
  620. #ifdef CONFIG_IDE_PROC_FS
  621. /*
  622. * configurable drive settings
  623. */
  624. #define TYPE_INT 0
  625. #define TYPE_BYTE 1
  626. #define TYPE_SHORT 2
  627. #define SETTING_READ (1 << 0)
  628. #define SETTING_WRITE (1 << 1)
  629. #define SETTING_RW (SETTING_READ | SETTING_WRITE)
  630. typedef int (ide_procset_t)(ide_drive_t *, int);
  631. typedef struct ide_settings_s {
  632. char *name;
  633. int rw;
  634. int data_type;
  635. int min;
  636. int max;
  637. int mul_factor;
  638. int div_factor;
  639. void *data;
  640. ide_procset_t *set;
  641. int auto_remove;
  642. struct ide_settings_s *next;
  643. } ide_settings_t;
  644. int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
  645. /*
  646. * /proc/ide interface
  647. */
  648. typedef struct {
  649. const char *name;
  650. mode_t mode;
  651. read_proc_t *read_proc;
  652. write_proc_t *write_proc;
  653. } ide_proc_entry_t;
  654. void proc_ide_create(void);
  655. void proc_ide_destroy(void);
  656. void ide_proc_register_port(ide_hwif_t *);
  657. void ide_proc_unregister_port(ide_hwif_t *);
  658. void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
  659. void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
  660. void ide_add_generic_settings(ide_drive_t *);
  661. read_proc_t proc_ide_read_capacity;
  662. read_proc_t proc_ide_read_geometry;
  663. #ifdef CONFIG_BLK_DEV_IDEPCI
  664. void ide_pci_create_host_proc(const char *, get_info_t *);
  665. #endif
  666. /*
  667. * Standard exit stuff:
  668. */
  669. #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
  670. { \
  671. len -= off; \
  672. if (len < count) { \
  673. *eof = 1; \
  674. if (len <= 0) \
  675. return 0; \
  676. } else \
  677. len = count; \
  678. *start = page + off; \
  679. return len; \
  680. }
  681. #else
  682. static inline void proc_ide_create(void) { ; }
  683. static inline void proc_ide_destroy(void) { ; }
  684. static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
  685. static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
  686. static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
  687. static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
  688. static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
  689. #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
  690. #endif
  691. /*
  692. * Power Management step value (rq->pm->pm_step).
  693. *
  694. * The step value starts at 0 (ide_pm_state_start_suspend) for a
  695. * suspend operation or 1000 (ide_pm_state_start_resume) for a
  696. * resume operation.
  697. *
  698. * For each step, the core calls the subdriver start_power_step() first.
  699. * This can return:
  700. * - ide_stopped : In this case, the core calls us back again unless
  701. * step have been set to ide_power_state_completed.
  702. * - ide_started : In this case, the channel is left busy until an
  703. * async event (interrupt) occurs.
  704. * Typically, start_power_step() will issue a taskfile request with
  705. * do_rw_taskfile().
  706. *
  707. * Upon reception of the interrupt, the core will call complete_power_step()
  708. * with the error code if any. This routine should update the step value
  709. * and return. It should not start a new request. The core will call
  710. * start_power_step for the new step value, unless step have been set to
  711. * ide_power_state_completed.
  712. *
  713. * Subdrivers are expected to define their own additional power
  714. * steps from 1..999 for suspend and from 1001..1999 for resume,
  715. * other values are reserved for future use.
  716. */
  717. enum {
  718. ide_pm_state_completed = -1,
  719. ide_pm_state_start_suspend = 0,
  720. ide_pm_state_start_resume = 1000,
  721. };
  722. /*
  723. * Subdrivers support.
  724. *
  725. * The gendriver.owner field should be set to the module owner of this driver.
  726. * The gendriver.name field should be set to the name of this driver
  727. */
  728. struct ide_driver_s {
  729. const char *version;
  730. u8 media;
  731. unsigned supports_dsc_overlap : 1;
  732. ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
  733. int (*end_request)(ide_drive_t *, int, int);
  734. ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
  735. ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
  736. struct device_driver gen_driver;
  737. int (*probe)(ide_drive_t *);
  738. void (*remove)(ide_drive_t *);
  739. void (*resume)(ide_drive_t *);
  740. void (*shutdown)(ide_drive_t *);
  741. #ifdef CONFIG_IDE_PROC_FS
  742. ide_proc_entry_t *proc;
  743. #endif
  744. };
  745. #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
  746. int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
  747. /*
  748. * ide_hwifs[] is the master data structure used to keep track
  749. * of just about everything in ide.c. Whenever possible, routines
  750. * should be using pointers to a drive (ide_drive_t *) or
  751. * pointers to a hwif (ide_hwif_t *), rather than indexing this
  752. * structure directly (the allocation/layout may change!).
  753. *
  754. */
  755. #ifndef _IDE_C
  756. extern ide_hwif_t ide_hwifs[]; /* master data repository */
  757. #endif
  758. extern int noautodma;
  759. extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
  760. int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
  761. int uptodate, int nr_sectors);
  762. extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
  763. void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
  764. ide_expiry_t *);
  765. ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
  766. ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
  767. ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
  768. extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
  769. extern void ide_fix_driveid(struct hd_driveid *);
  770. extern void ide_fixstring(u8 *, const int, const int);
  771. int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
  772. extern ide_startstop_t ide_do_reset (ide_drive_t *);
  773. extern void ide_init_drive_cmd (struct request *rq);
  774. /*
  775. * "action" parameter type for ide_do_drive_cmd() below.
  776. */
  777. typedef enum {
  778. ide_wait, /* insert rq at end of list, and wait for it */
  779. ide_preempt, /* insert rq in front of current request */
  780. ide_head_wait, /* insert rq in front of current request and wait for it */
  781. ide_end /* insert rq at end of list, but don't wait for it */
  782. } ide_action_t;
  783. extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
  784. extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
  785. /*
  786. * Issue ATA command and wait for completion.
  787. * Use for implementing commands in kernel
  788. *
  789. * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
  790. */
  791. extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *);
  792. enum {
  793. IDE_TFLAG_LBA48 = (1 << 0),
  794. IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
  795. IDE_TFLAG_FLAGGED = (1 << 2),
  796. IDE_TFLAG_OUT_DATA = (1 << 3),
  797. IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
  798. IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
  799. IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
  800. IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
  801. IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
  802. IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
  803. IDE_TFLAG_OUT_HOB_NSECT |
  804. IDE_TFLAG_OUT_HOB_LBAL |
  805. IDE_TFLAG_OUT_HOB_LBAM |
  806. IDE_TFLAG_OUT_HOB_LBAH,
  807. IDE_TFLAG_OUT_FEATURE = (1 << 9),
  808. IDE_TFLAG_OUT_NSECT = (1 << 10),
  809. IDE_TFLAG_OUT_LBAL = (1 << 11),
  810. IDE_TFLAG_OUT_LBAM = (1 << 12),
  811. IDE_TFLAG_OUT_LBAH = (1 << 13),
  812. IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
  813. IDE_TFLAG_OUT_NSECT |
  814. IDE_TFLAG_OUT_LBAL |
  815. IDE_TFLAG_OUT_LBAM |
  816. IDE_TFLAG_OUT_LBAH,
  817. IDE_TFLAG_OUT_DEVICE = (1 << 14),
  818. };
  819. struct ide_taskfile {
  820. u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
  821. u8 hob_feature; /* 1-5: additional data to support LBA48 */
  822. u8 hob_nsect;
  823. u8 hob_lbal;
  824. u8 hob_lbam;
  825. u8 hob_lbah;
  826. u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
  827. union { /*  7: */
  828. u8 error; /* read: error */
  829. u8 feature; /* write: feature */
  830. };
  831. u8 nsect; /* 8: number of sectors */
  832. u8 lbal; /* 9: LBA low */
  833. u8 lbam; /* 10: LBA mid */
  834. u8 lbah; /* 11: LBA high */
  835. u8 device; /* 12: device select */
  836. union { /* 13: */
  837. u8 status; /*  read: status  */
  838. u8 command; /* write: command */
  839. };
  840. };
  841. typedef struct ide_task_s {
  842. union {
  843. struct ide_taskfile tf;
  844. u8 tf_array[14];
  845. };
  846. u16 tf_flags;
  847. ide_reg_valid_t tf_in_flags;
  848. int data_phase;
  849. int command_type;
  850. ide_pre_handler_t *prehandler;
  851. ide_handler_t *handler;
  852. struct request *rq; /* copy of request */
  853. void *special; /* valid_t generally */
  854. } ide_task_t;
  855. void ide_tf_load(ide_drive_t *, ide_task_t *);
  856. extern u32 ide_read_24(ide_drive_t *);
  857. extern void SELECT_DRIVE(ide_drive_t *);
  858. extern void SELECT_INTERRUPT(ide_drive_t *);
  859. extern void SELECT_MASK(ide_drive_t *, int);
  860. extern void QUIRK_LIST(ide_drive_t *);
  861. extern int drive_is_ready(ide_drive_t *);
  862. /*
  863. * taskfile io for disks for now...and builds request from ide_ioctl
  864. */
  865. extern ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
  866. /*
  867. * Special Flagged Register Validation Caller
  868. */
  869. extern ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *);
  870. extern ide_startstop_t set_multmode_intr(ide_drive_t *);
  871. extern ide_startstop_t set_geometry_intr(ide_drive_t *);
  872. extern ide_startstop_t recal_intr(ide_drive_t *);
  873. extern ide_startstop_t task_no_data_intr(ide_drive_t *);
  874. extern ide_startstop_t task_in_intr(ide_drive_t *);
  875. extern ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
  876. extern int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *);
  877. int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
  878. int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
  879. int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
  880. int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
  881. extern int system_bus_clock(void);
  882. extern int ide_driveid_update(ide_drive_t *);
  883. extern int ide_ata66_check(ide_drive_t *, ide_task_t *);
  884. extern int ide_config_drive_speed(ide_drive_t *, u8);
  885. extern u8 eighty_ninty_three (ide_drive_t *);
  886. extern int set_transfer(ide_drive_t *, ide_task_t *);
  887. extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
  888. extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
  889. extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
  890. extern int ide_spin_wait_hwgroup(ide_drive_t *);
  891. extern void ide_timer_expiry(unsigned long);
  892. extern irqreturn_t ide_intr(int irq, void *dev_id);
  893. extern void do_ide_request(struct request_queue *);
  894. void ide_init_disk(struct gendisk *, ide_drive_t *);
  895. extern int ideprobe_init(void);
  896. #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
  897. extern void ide_scan_pcibus(int scan_direction) __init;
  898. extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
  899. #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
  900. #else
  901. #define ide_pci_register_driver(d) pci_register_driver(d)
  902. #endif
  903. void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
  904. void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
  905. extern void default_hwif_iops(ide_hwif_t *);
  906. extern void default_hwif_mmiops(ide_hwif_t *);
  907. extern void default_hwif_transport(ide_hwif_t *);
  908. typedef struct ide_pci_enablebit_s {
  909. u8 reg; /* byte pci reg holding the enable-bit */
  910. u8 mask; /* mask to isolate the enable-bit */
  911. u8 val; /* value of masked reg when "enabled" */
  912. } ide_pci_enablebit_t;
  913. enum {
  914. /* Uses ISA control ports not PCI ones. */
  915. IDE_HFLAG_ISA_PORTS = (1 << 0),
  916. /* single port device */
  917. IDE_HFLAG_SINGLE = (1 << 1),
  918. /* don't use legacy PIO blacklist */
  919. IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
  920. /* don't use conservative PIO "downgrade" */
  921. IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
  922. /* use PIO8/9 for prefetch off/on */
  923. IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
  924. /* use PIO6/7 for fast-devsel off/on */
  925. IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
  926. /* use 100-102 and 200-202 PIO values to set DMA modes */
  927. IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
  928. /*
  929. * keep DMA setting when programming PIO mode, may be used only
  930. * for hosts which have separate PIO and DMA timings (ie. PMAC)
  931. */
  932. IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
  933. /* program host for the transfer mode after programming device */
  934. IDE_HFLAG_POST_SET_MODE = (1 << 8),
  935. /* don't program host/device for the transfer mode ("smart" hosts) */
  936. IDE_HFLAG_NO_SET_MODE = (1 << 9),
  937. /* trust BIOS for programming chipset/device for DMA */
  938. IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
  939. /* host uses VDMA */
  940. IDE_HFLAG_VDMA = (1 << 11),
  941. /* ATAPI DMA is unsupported */
  942. IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
  943. /* set if host is a "bootable" controller */
  944. IDE_HFLAG_BOOTABLE = (1 << 13),
  945. /* host doesn't support DMA */
  946. IDE_HFLAG_NO_DMA = (1 << 14),
  947. /* check if host is PCI IDE device before allowing DMA */
  948. IDE_HFLAG_NO_AUTODMA = (1 << 15),
  949. /* host is CS5510/CS5520 */
  950. IDE_HFLAG_CS5520 = (1 << 16),
  951. /* no LBA48 */
  952. IDE_HFLAG_NO_LBA48 = (1 << 17),
  953. /* no LBA48 DMA */
  954. IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
  955. /* data FIFO is cleared by an error */
  956. IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
  957. /* serialize ports */
  958. IDE_HFLAG_SERIALIZE = (1 << 20),
  959. /* use legacy IRQs */
  960. IDE_HFLAG_LEGACY_IRQS = (1 << 21),
  961. /* force use of legacy IRQs */
  962. IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
  963. /* limit LBA48 requests to 256 sectors */
  964. IDE_HFLAG_RQSIZE_256 = (1 << 23),
  965. /* use 32-bit I/O ops */
  966. IDE_HFLAG_IO_32BIT = (1 << 24),
  967. /* unmask IRQs */
  968. IDE_HFLAG_UNMASK_IRQS = (1 << 25),
  969. };
  970. #ifdef CONFIG_BLK_DEV_OFFBOARD
  971. # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
  972. #else
  973. # define IDE_HFLAG_OFF_BOARD 0
  974. #endif
  975. struct ide_port_info {
  976. char *name;
  977. unsigned int (*init_chipset)(struct pci_dev *, const char *);
  978. void (*init_iops)(ide_hwif_t *);
  979. void (*init_hwif)(ide_hwif_t *);
  980. void (*init_dma)(ide_hwif_t *, unsigned long);
  981. void (*fixup)(ide_hwif_t *);
  982. ide_pci_enablebit_t enablebits[2];
  983. hwif_chipset_t chipset;
  984. unsigned int extra;
  985. u32 host_flags;
  986. u8 pio_mask;
  987. u8 swdma_mask;
  988. u8 mwdma_mask;
  989. u8 udma_mask;
  990. };
  991. int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
  992. int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
  993. void ide_map_sg(ide_drive_t *, struct request *);
  994. void ide_init_sg_cmd(ide_drive_t *, struct request *);
  995. #define BAD_DMA_DRIVE 0
  996. #define GOOD_DMA_DRIVE 1
  997. struct drive_list_entry {
  998. const char *id_model;
  999. const char *id_firmware;
  1000. };
  1001. int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
  1002. #ifdef CONFIG_BLK_DEV_IDEDMA
  1003. int __ide_dma_bad_drive(ide_drive_t *);
  1004. int ide_id_dma_bug(ide_drive_t *);
  1005. u8 ide_find_dma_mode(ide_drive_t *, u8);
  1006. static inline u8 ide_max_dma_mode(ide_drive_t *drive)
  1007. {
  1008. return ide_find_dma_mode(drive, XFER_UDMA_6);
  1009. }
  1010. void ide_dma_off(ide_drive_t *);
  1011. int ide_set_dma(ide_drive_t *);
  1012. ide_startstop_t ide_dma_intr(ide_drive_t *);
  1013. #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
  1014. extern int ide_build_sglist(ide_drive_t *, struct request *);
  1015. extern int ide_build_dmatable(ide_drive_t *, struct request *);
  1016. extern void ide_destroy_dmatable(ide_drive_t *);
  1017. extern int ide_release_dma(ide_hwif_t *);
  1018. extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
  1019. void ide_dma_host_off(ide_drive_t *);
  1020. void ide_dma_off_quietly(ide_drive_t *);
  1021. void ide_dma_host_on(ide_drive_t *);
  1022. extern int __ide_dma_on(ide_drive_t *);
  1023. extern int ide_dma_setup(ide_drive_t *);
  1024. extern void ide_dma_start(ide_drive_t *);
  1025. extern int __ide_dma_end(ide_drive_t *);
  1026. extern void ide_dma_lost_irq(ide_drive_t *);
  1027. extern void ide_dma_timeout(ide_drive_t *);
  1028. #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
  1029. #else
  1030. static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
  1031. static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
  1032. static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
  1033. static inline void ide_dma_off(ide_drive_t *drive) { ; }
  1034. static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
  1035. static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
  1036. #endif /* CONFIG_BLK_DEV_IDEDMA */
  1037. #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
  1038. static inline void ide_release_dma(ide_hwif_t *drive) {;}
  1039. #endif
  1040. #ifdef CONFIG_BLK_DEV_IDEACPI
  1041. extern int ide_acpi_exec_tfs(ide_drive_t *drive);
  1042. extern void ide_acpi_get_timing(ide_hwif_t *hwif);
  1043. extern void ide_acpi_push_timing(ide_hwif_t *hwif);
  1044. extern void ide_acpi_init(ide_hwif_t *hwif);
  1045. extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
  1046. #else
  1047. static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
  1048. static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
  1049. static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
  1050. static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
  1051. static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
  1052. #endif
  1053. extern int ide_hwif_request_regions(ide_hwif_t *hwif);
  1054. extern void ide_hwif_release_regions(ide_hwif_t* hwif);
  1055. extern void ide_unregister (unsigned int index);
  1056. void ide_register_region(struct gendisk *);
  1057. void ide_unregister_region(struct gendisk *);
  1058. void ide_undecoded_slave(ide_hwif_t *);
  1059. int ide_device_add(u8 idx[4]);
  1060. static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
  1061. {
  1062. return hwif->hwif_data;
  1063. }
  1064. static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
  1065. {
  1066. hwif->hwif_data = data;
  1067. }
  1068. const char *ide_xfer_verbose(u8 mode);
  1069. extern void ide_toggle_bounce(ide_drive_t *drive, int on);
  1070. extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
  1071. static inline int ide_dev_has_iordy(struct hd_driveid *id)
  1072. {
  1073. return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
  1074. }
  1075. static inline int ide_dev_is_sata(struct hd_driveid *id)
  1076. {
  1077. /*
  1078. * See if word 93 is 0 AND drive is at least ATA-5 compatible
  1079. * verifying that word 80 by casting it to a signed type --
  1080. * this trick allows us to filter out the reserved values of
  1081. * 0x0000 and 0xffff along with the earlier ATA revisions...
  1082. */
  1083. if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
  1084. return 1;
  1085. return 0;
  1086. }
  1087. u8 ide_dump_status(ide_drive_t *, const char *, u8);
  1088. typedef struct ide_pio_timings_s {
  1089. int setup_time; /* Address setup (ns) minimum */
  1090. int active_time; /* Active pulse (ns) minimum */
  1091. int cycle_time; /* Cycle time (ns) minimum = */
  1092. /* active + recovery (+ setup for some chips) */
  1093. } ide_pio_timings_t;
  1094. unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
  1095. u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
  1096. extern const ide_pio_timings_t ide_pio_timings[6];
  1097. int ide_set_pio_mode(ide_drive_t *, u8);
  1098. int ide_set_dma_mode(ide_drive_t *, u8);
  1099. void ide_set_pio(ide_drive_t *, u8);
  1100. static inline void ide_set_max_pio(ide_drive_t *drive)
  1101. {
  1102. ide_set_pio(drive, 255);
  1103. }
  1104. extern spinlock_t ide_lock;
  1105. extern struct mutex ide_cfg_mtx;
  1106. /*
  1107. * Structure locking:
  1108. *
  1109. * ide_cfg_mtx and ide_lock together protect changes to
  1110. * ide_hwif_t->{next,hwgroup}
  1111. * ide_drive_t->next
  1112. *
  1113. * ide_hwgroup_t->busy: ide_lock
  1114. * ide_hwgroup_t->hwif: ide_lock
  1115. * ide_hwif_t->mate: constant, no locking
  1116. * ide_drive_t->hwif: constant, no locking
  1117. */
  1118. #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
  1119. extern struct bus_type ide_bus_type;
  1120. /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
  1121. #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
  1122. /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
  1123. #define ide_id_has_flush_cache_ext(id) \
  1124. (((id)->cfs_enable_2 & 0x2400) == 0x2400)
  1125. static inline int hwif_to_node(ide_hwif_t *hwif)
  1126. {
  1127. struct pci_dev *dev = hwif->pci_dev;
  1128. return dev ? pcibus_to_node(dev->bus) : -1;
  1129. }
  1130. static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
  1131. {
  1132. ide_hwif_t *hwif = HWIF(drive);
  1133. return &hwif->drives[(drive->dn ^ 1) & 1];
  1134. }
  1135. #endif /* _IDE_H */