libata.h 17 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
  4. * Copyright 2003-2004 Jeff Garzik
  5. * Copyright (C) 2008 Freescale Semiconductor, Inc.
  6. * Dave Liu <daveliu@freescale.com>
  7. * port from libata of linux kernel
  8. */
  9. #ifndef __LIBATA_H__
  10. #define __LIBATA_H__
  11. #include <common.h>
  12. enum {
  13. /* various global constants */
  14. ATA_MAX_DEVICES = 2, /* per bus/port */
  15. ATA_MAX_PRD = 256, /* we could make these 256/256 */
  16. ATA_SECT_SIZE = 512,
  17. ATA_MAX_SECTORS_128 = 128,
  18. ATA_MAX_SECTORS = 256,
  19. ATA_MAX_SECTORS_LBA48 = 65535,
  20. ATA_MAX_SECTORS_TAPE = 65535,
  21. ATA_ID_WORDS = 256,
  22. ATA_ID_SERNO = 10,
  23. ATA_ID_FW_REV = 23,
  24. ATA_ID_PROD = 27,
  25. ATA_ID_OLD_PIO_MODES = 51,
  26. ATA_ID_FIELD_VALID = 53,
  27. ATA_ID_LBA_SECTORS = 60,
  28. ATA_ID_MWDMA_MODES = 63,
  29. ATA_ID_PIO_MODES = 64,
  30. ATA_ID_EIDE_DMA_MIN = 65,
  31. ATA_ID_EIDE_PIO = 67,
  32. ATA_ID_EIDE_PIO_IORDY = 68,
  33. ATA_ID_PIO4 = (1 << 1),
  34. ATA_ID_QUEUE_DEPTH = 75,
  35. ATA_ID_SATA_CAP = 76,
  36. ATA_ID_SATA_FEATURES = 78,
  37. ATA_ID_SATA_FEATURES_EN = 79,
  38. ATA_ID_MAJOR_VER = 80,
  39. ATA_ID_MINOR_VER = 81,
  40. ATA_ID_UDMA_MODES = 88,
  41. ATA_ID_LBA48_SECTORS = 100,
  42. ATA_ID_SERNO_LEN = 20,
  43. ATA_ID_FW_REV_LEN = 8,
  44. ATA_ID_PROD_LEN = 40,
  45. ATA_PCI_CTL_OFS = 2,
  46. ATA_PIO0 = (1 << 0),
  47. ATA_PIO1 = ATA_PIO0 | (1 << 1),
  48. ATA_PIO2 = ATA_PIO1 | (1 << 2),
  49. ATA_PIO3 = ATA_PIO2 | (1 << 3),
  50. ATA_PIO4 = ATA_PIO3 | (1 << 4),
  51. ATA_PIO5 = ATA_PIO4 | (1 << 5),
  52. ATA_PIO6 = ATA_PIO5 | (1 << 6),
  53. ATA_SWDMA0 = (1 << 0),
  54. ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
  55. ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
  56. ATA_SWDMA2_ONLY = (1 << 2),
  57. ATA_MWDMA0 = (1 << 0),
  58. ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
  59. ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
  60. ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
  61. ATA_MWDMA2_ONLY = (1 << 2),
  62. ATA_UDMA0 = (1 << 0),
  63. ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
  64. ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
  65. ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
  66. ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
  67. ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
  68. ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
  69. ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
  70. /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
  71. ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
  72. /* DMA-related */
  73. ATA_PRD_SZ = 8,
  74. ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
  75. ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
  76. ATA_DMA_TABLE_OFS = 4,
  77. ATA_DMA_STATUS = 2,
  78. ATA_DMA_CMD = 0,
  79. ATA_DMA_WR = (1 << 3),
  80. ATA_DMA_START = (1 << 0),
  81. ATA_DMA_INTR = (1 << 2),
  82. ATA_DMA_ERR = (1 << 1),
  83. ATA_DMA_ACTIVE = (1 << 0),
  84. /* bits in ATA command block registers */
  85. ATA_HOB = (1 << 7), /* LBA48 selector */
  86. ATA_NIEN = (1 << 1), /* disable-irq flag */
  87. ATA_LBA = (1 << 6), /* LBA28 selector */
  88. ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
  89. ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
  90. ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
  91. ATA_BUSY = (1 << 7), /* BSY status bit */
  92. ATA_DRDY = (1 << 6), /* device ready */
  93. ATA_DF = (1 << 5), /* device fault */
  94. ATA_DRQ = (1 << 3), /* data request i/o */
  95. ATA_ERR = (1 << 0), /* have an error */
  96. ATA_SRST = (1 << 2), /* software reset */
  97. ATA_ICRC = (1 << 7), /* interface CRC error */
  98. ATA_UNC = (1 << 6), /* uncorrectable media error */
  99. ATA_IDNF = (1 << 4), /* ID not found */
  100. ATA_ABORTED = (1 << 2), /* command aborted */
  101. /* ATA command block registers */
  102. ATA_REG_DATA = 0x00,
  103. ATA_REG_ERR = 0x01,
  104. ATA_REG_NSECT = 0x02,
  105. ATA_REG_LBAL = 0x03,
  106. ATA_REG_LBAM = 0x04,
  107. ATA_REG_LBAH = 0x05,
  108. ATA_REG_DEVICE = 0x06,
  109. ATA_REG_STATUS = 0x07,
  110. ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
  111. ATA_REG_CMD = ATA_REG_STATUS,
  112. ATA_REG_BYTEL = ATA_REG_LBAM,
  113. ATA_REG_BYTEH = ATA_REG_LBAH,
  114. ATA_REG_DEVSEL = ATA_REG_DEVICE,
  115. ATA_REG_IRQ = ATA_REG_NSECT,
  116. /* ATA device commands */
  117. ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
  118. ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
  119. ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
  120. ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
  121. ATA_CMD_EDD = 0x90, /* execute device diagnostic */
  122. ATA_CMD_FLUSH = 0xE7,
  123. ATA_CMD_FLUSH_EXT = 0xEA,
  124. ATA_CMD_ID_ATA = 0xEC,
  125. ATA_CMD_ID_ATAPI = 0xA1,
  126. ATA_CMD_READ = 0xC8,
  127. ATA_CMD_READ_EXT = 0x25,
  128. ATA_CMD_WRITE = 0xCA,
  129. ATA_CMD_WRITE_EXT = 0x35,
  130. ATA_CMD_WRITE_FUA_EXT = 0x3D,
  131. ATA_CMD_FPDMA_READ = 0x60,
  132. ATA_CMD_FPDMA_WRITE = 0x61,
  133. ATA_CMD_PIO_READ = 0x20,
  134. ATA_CMD_PIO_READ_EXT = 0x24,
  135. ATA_CMD_PIO_WRITE = 0x30,
  136. ATA_CMD_PIO_WRITE_EXT = 0x34,
  137. ATA_CMD_READ_MULTI = 0xC4,
  138. ATA_CMD_READ_MULTI_EXT = 0x29,
  139. ATA_CMD_WRITE_MULTI = 0xC5,
  140. ATA_CMD_WRITE_MULTI_EXT = 0x39,
  141. ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
  142. ATA_CMD_SET_FEATURES = 0xEF,
  143. ATA_CMD_SET_MULTI = 0xC6,
  144. ATA_CMD_PACKET = 0xA0,
  145. ATA_CMD_VERIFY = 0x40,
  146. ATA_CMD_VERIFY_EXT = 0x42,
  147. ATA_CMD_STANDBYNOW1 = 0xE0,
  148. ATA_CMD_IDLEIMMEDIATE = 0xE1,
  149. ATA_CMD_SLEEP = 0xE6,
  150. ATA_CMD_INIT_DEV_PARAMS = 0x91,
  151. ATA_CMD_READ_NATIVE_MAX = 0xF8,
  152. ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
  153. ATA_CMD_SET_MAX = 0xF9,
  154. ATA_CMD_SET_MAX_EXT = 0x37,
  155. ATA_CMD_READ_LOG_EXT = 0x2f,
  156. ATA_CMD_PMP_READ = 0xE4,
  157. ATA_CMD_PMP_WRITE = 0xE8,
  158. ATA_CMD_CONF_OVERLAY = 0xB1,
  159. ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
  160. /* READ_LOG_EXT pages */
  161. ATA_LOG_SATA_NCQ = 0x10,
  162. /* READ/WRITE LONG (obsolete) */
  163. ATA_CMD_READ_LONG = 0x22,
  164. ATA_CMD_READ_LONG_ONCE = 0x23,
  165. ATA_CMD_WRITE_LONG = 0x32,
  166. ATA_CMD_WRITE_LONG_ONCE = 0x33,
  167. /* SETFEATURES stuff */
  168. SETFEATURES_XFER = 0x03,
  169. XFER_UDMA_7 = 0x47,
  170. XFER_UDMA_6 = 0x46,
  171. XFER_UDMA_5 = 0x45,
  172. XFER_UDMA_4 = 0x44,
  173. XFER_UDMA_3 = 0x43,
  174. XFER_UDMA_2 = 0x42,
  175. XFER_UDMA_1 = 0x41,
  176. XFER_UDMA_0 = 0x40,
  177. XFER_MW_DMA_4 = 0x24, /* CFA only */
  178. XFER_MW_DMA_3 = 0x23, /* CFA only */
  179. XFER_MW_DMA_2 = 0x22,
  180. XFER_MW_DMA_1 = 0x21,
  181. XFER_MW_DMA_0 = 0x20,
  182. XFER_SW_DMA_2 = 0x12,
  183. XFER_SW_DMA_1 = 0x11,
  184. XFER_SW_DMA_0 = 0x10,
  185. XFER_PIO_6 = 0x0E, /* CFA only */
  186. XFER_PIO_5 = 0x0D, /* CFA only */
  187. XFER_PIO_4 = 0x0C,
  188. XFER_PIO_3 = 0x0B,
  189. XFER_PIO_2 = 0x0A,
  190. XFER_PIO_1 = 0x09,
  191. XFER_PIO_0 = 0x08,
  192. XFER_PIO_SLOW = 0x00,
  193. SETFEATURES_WC_ON = 0x02, /* Enable write cache */
  194. SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
  195. SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
  196. SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
  197. SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
  198. /* SETFEATURE Sector counts for SATA features */
  199. SATA_AN = 0x05, /* Asynchronous Notification */
  200. SATA_DIPM = 0x03, /* Device Initiated Power Management */
  201. /* feature values for SET_MAX */
  202. ATA_SET_MAX_ADDR = 0x00,
  203. ATA_SET_MAX_PASSWD = 0x01,
  204. ATA_SET_MAX_LOCK = 0x02,
  205. ATA_SET_MAX_UNLOCK = 0x03,
  206. ATA_SET_MAX_FREEZE_LOCK = 0x04,
  207. /* feature values for DEVICE CONFIGURATION OVERLAY */
  208. ATA_DCO_RESTORE = 0xC0,
  209. ATA_DCO_FREEZE_LOCK = 0xC1,
  210. ATA_DCO_IDENTIFY = 0xC2,
  211. ATA_DCO_SET = 0xC3,
  212. /* ATAPI stuff */
  213. ATAPI_PKT_DMA = (1 << 0),
  214. ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
  215. 0=to device, 1=to host */
  216. ATAPI_CDB_LEN = 16,
  217. /* PMP stuff */
  218. SATA_PMP_MAX_PORTS = 15,
  219. SATA_PMP_CTRL_PORT = 15,
  220. SATA_PMP_GSCR_DWORDS = 128,
  221. SATA_PMP_GSCR_PROD_ID = 0,
  222. SATA_PMP_GSCR_REV = 1,
  223. SATA_PMP_GSCR_PORT_INFO = 2,
  224. SATA_PMP_GSCR_ERROR = 32,
  225. SATA_PMP_GSCR_ERROR_EN = 33,
  226. SATA_PMP_GSCR_FEAT = 64,
  227. SATA_PMP_GSCR_FEAT_EN = 96,
  228. SATA_PMP_PSCR_STATUS = 0,
  229. SATA_PMP_PSCR_ERROR = 1,
  230. SATA_PMP_PSCR_CONTROL = 2,
  231. SATA_PMP_FEAT_BIST = (1 << 0),
  232. SATA_PMP_FEAT_PMREQ = (1 << 1),
  233. SATA_PMP_FEAT_DYNSSC = (1 << 2),
  234. SATA_PMP_FEAT_NOTIFY = (1 << 3),
  235. /* cable types */
  236. ATA_CBL_NONE = 0,
  237. ATA_CBL_PATA40 = 1,
  238. ATA_CBL_PATA80 = 2,
  239. ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
  240. ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
  241. ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
  242. ATA_CBL_SATA = 6,
  243. /* SATA Status and Control Registers */
  244. SCR_STATUS = 0,
  245. SCR_ERROR = 1,
  246. SCR_CONTROL = 2,
  247. SCR_ACTIVE = 3,
  248. SCR_NOTIFICATION = 4,
  249. /* SError bits */
  250. SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
  251. SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
  252. SERR_DATA = (1 << 8), /* unrecovered data error */
  253. SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
  254. SERR_PROTOCOL = (1 << 10), /* protocol violation */
  255. SERR_INTERNAL = (1 << 11), /* host internal error */
  256. SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
  257. SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
  258. SERR_COMM_WAKE = (1 << 18), /* Comm wake */
  259. SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
  260. SERR_DISPARITY = (1 << 20), /* Disparity */
  261. SERR_CRC = (1 << 21), /* CRC error */
  262. SERR_HANDSHAKE = (1 << 22), /* Handshake error */
  263. SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
  264. SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
  265. SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
  266. SERR_DEV_XCHG = (1 << 26), /* device exchanged */
  267. /* struct ata_taskfile flags */
  268. ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
  269. ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
  270. ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
  271. ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
  272. ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
  273. ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
  274. ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
  275. /* protocol flags */
  276. ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
  277. ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
  278. ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
  279. ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
  280. ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
  281. };
  282. enum ata_tf_protocols {
  283. /* ATA taskfile protocols */
  284. ATA_PROT_UNKNOWN, /* unknown/invalid */
  285. ATA_PROT_NODATA, /* no data */
  286. ATA_PROT_PIO, /* PIO data xfer */
  287. ATA_PROT_DMA, /* DMA */
  288. ATA_PROT_NCQ, /* NCQ */
  289. ATAPI_PROT_NODATA, /* packet command, no data */
  290. ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
  291. ATAPI_PROT_DMA, /* packet command with special DMA sauce */
  292. };
  293. enum ata_ioctls {
  294. ATA_IOC_GET_IO32 = 0x309,
  295. ATA_IOC_SET_IO32 = 0x324,
  296. };
  297. enum ata_dev_typed {
  298. ATA_DEV_ATA, /* ATA device */
  299. ATA_DEV_ATAPI, /* ATAPI device */
  300. ATA_DEV_PMP, /* Port Multiplier Port */
  301. ATA_DEV_UNKNOWN, /* unknown */
  302. };
  303. struct ata_taskfile {
  304. unsigned long flags; /* ATA_TFLAG_xxx */
  305. u8 protocol; /* ATA_PROT_xxx */
  306. u8 ctl; /* control reg */
  307. u8 hob_feature; /* additional data */
  308. u8 hob_nsect; /* to support LBA48 */
  309. u8 hob_lbal;
  310. u8 hob_lbam;
  311. u8 hob_lbah;
  312. u8 feature;
  313. u8 nsect;
  314. u8 lbal;
  315. u8 lbam;
  316. u8 lbah;
  317. u8 device;
  318. u8 command; /* IO operation */
  319. };
  320. /*
  321. * protocol tests
  322. */
  323. static inline unsigned int ata_prot_flags(u8 prot)
  324. {
  325. switch (prot) {
  326. case ATA_PROT_NODATA:
  327. return 0;
  328. case ATA_PROT_PIO:
  329. return ATA_PROT_FLAG_PIO;
  330. case ATA_PROT_DMA:
  331. return ATA_PROT_FLAG_DMA;
  332. case ATA_PROT_NCQ:
  333. return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
  334. case ATAPI_PROT_NODATA:
  335. return ATA_PROT_FLAG_ATAPI;
  336. case ATAPI_PROT_PIO:
  337. return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
  338. case ATAPI_PROT_DMA:
  339. return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
  340. }
  341. return 0;
  342. }
  343. static inline int ata_is_atapi(u8 prot)
  344. {
  345. return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
  346. }
  347. static inline int ata_is_nodata(u8 prot)
  348. {
  349. return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
  350. }
  351. static inline int ata_is_pio(u8 prot)
  352. {
  353. return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
  354. }
  355. static inline int ata_is_dma(u8 prot)
  356. {
  357. return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
  358. }
  359. static inline int ata_is_ncq(u8 prot)
  360. {
  361. return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
  362. }
  363. static inline int ata_is_data(u8 prot)
  364. {
  365. return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
  366. }
  367. /*
  368. * id tests
  369. */
  370. #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
  371. #define ata_id_has_lba(id) ((id)[49] & (1 << 9))
  372. #define ata_id_has_dma(id) ((id)[49] & (1 << 8))
  373. #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
  374. #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
  375. #define ata_id_removeable(id) ((id)[0] & (1 << 7))
  376. #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
  377. #define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
  378. #define ata_id_u32(id,n) \
  379. (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
  380. #define ata_id_u64(id,n) \
  381. ( ((u64) (id)[(n) + 3] << 48) | \
  382. ((u64) (id)[(n) + 2] << 32) | \
  383. ((u64) (id)[(n) + 1] << 16) | \
  384. ((u64) (id)[(n) + 0]) )
  385. #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
  386. static inline int ata_id_has_fua(const u16 *id)
  387. {
  388. if ((id[84] & 0xC000) != 0x4000)
  389. return 0;
  390. return id[84] & (1 << 6);
  391. }
  392. static inline int ata_id_has_flush(const u16 *id)
  393. {
  394. if ((id[83] & 0xC000) != 0x4000)
  395. return 0;
  396. return id[83] & (1 << 12);
  397. }
  398. static inline int ata_id_has_flush_ext(const u16 *id)
  399. {
  400. if ((id[83] & 0xC000) != 0x4000)
  401. return 0;
  402. return id[83] & (1 << 13);
  403. }
  404. static inline int ata_id_has_lba48(const u16 *id)
  405. {
  406. if ((id[83] & 0xC000) != 0x4000)
  407. return 0;
  408. if (!ata_id_u64(id, 100))
  409. return 0;
  410. return id[83] & (1 << 10);
  411. }
  412. static inline int ata_id_hpa_enabled(const u16 *id)
  413. {
  414. /* Yes children, word 83 valid bits cover word 82 data */
  415. if ((id[83] & 0xC000) != 0x4000)
  416. return 0;
  417. /* And 87 covers 85-87 */
  418. if ((id[87] & 0xC000) != 0x4000)
  419. return 0;
  420. /* Check command sets enabled as well as supported */
  421. if ((id[85] & ( 1 << 10)) == 0)
  422. return 0;
  423. return id[82] & (1 << 10);
  424. }
  425. static inline int ata_id_has_wcache(const u16 *id)
  426. {
  427. /* Yes children, word 83 valid bits cover word 82 data */
  428. if ((id[83] & 0xC000) != 0x4000)
  429. return 0;
  430. return id[82] & (1 << 5);
  431. }
  432. static inline int ata_id_has_pm(const u16 *id)
  433. {
  434. if ((id[83] & 0xC000) != 0x4000)
  435. return 0;
  436. return id[82] & (1 << 3);
  437. }
  438. static inline int ata_id_rahead_enabled(const u16 *id)
  439. {
  440. if ((id[87] & 0xC000) != 0x4000)
  441. return 0;
  442. return id[85] & (1 << 6);
  443. }
  444. static inline int ata_id_wcache_enabled(const u16 *id)
  445. {
  446. if ((id[87] & 0xC000) != 0x4000)
  447. return 0;
  448. return id[85] & (1 << 5);
  449. }
  450. static inline unsigned int ata_id_major_version(const u16 *id)
  451. {
  452. unsigned int mver;
  453. if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
  454. return 0;
  455. for (mver = 14; mver >= 1; mver--)
  456. if (id[ATA_ID_MAJOR_VER] & (1 << mver))
  457. break;
  458. return mver;
  459. }
  460. static inline int ata_id_is_sata(const u16 *id)
  461. {
  462. return ata_id_major_version(id) >= 5 && id[93] == 0;
  463. }
  464. static inline int ata_id_has_tpm(const u16 *id)
  465. {
  466. /* The TPM bits are only valid on ATA8 */
  467. if (ata_id_major_version(id) < 8)
  468. return 0;
  469. if ((id[48] & 0xC000) != 0x4000)
  470. return 0;
  471. return id[48] & (1 << 0);
  472. }
  473. static inline int ata_id_has_dword_io(const u16 *id)
  474. {
  475. /* ATA 8 reuses this flag for "trusted" computing */
  476. if (ata_id_major_version(id) > 7)
  477. return 0;
  478. if (id[48] & (1 << 0))
  479. return 1;
  480. return 0;
  481. }
  482. static inline int ata_id_current_chs_valid(const u16 *id)
  483. {
  484. /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
  485. has not been issued to the device then the values of
  486. id[54] to id[56] are vendor specific. */
  487. return (id[53] & 0x01) && /* Current translation valid */
  488. id[54] && /* cylinders in current translation */
  489. id[55] && /* heads in current translation */
  490. id[55] <= 16 &&
  491. id[56]; /* sectors in current translation */
  492. }
  493. static inline int ata_id_is_cfa(const u16 *id)
  494. {
  495. u16 v = id[0];
  496. if (v == 0x848A) /* Standard CF */
  497. return 1;
  498. /* Could be CF hiding as standard ATA */
  499. if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
  500. (id[82] & ( 1 << 2)))
  501. return 1;
  502. return 0;
  503. }
  504. static inline int ata_drive_40wire(const u16 *dev_id)
  505. {
  506. if (ata_id_is_sata(dev_id))
  507. return 0; /* SATA */
  508. if ((dev_id[93] & 0xE000) == 0x6000)
  509. return 0; /* 80 wire */
  510. return 1;
  511. }
  512. static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
  513. {
  514. if ((dev_id[93] & 0x2000) == 0x2000)
  515. return 0; /* 80 wire */
  516. return 1;
  517. }
  518. static inline int atapi_cdb_len(const u16 *dev_id)
  519. {
  520. u16 tmp = dev_id[0] & 0x3;
  521. switch (tmp) {
  522. case 0: return 12;
  523. case 1: return 16;
  524. default: return -1;
  525. }
  526. }
  527. static inline int atapi_command_packet_set(const u16 *dev_id)
  528. {
  529. return (dev_id[0] >> 8) & 0x1f;
  530. }
  531. static inline int atapi_id_dmadir(const u16 *dev_id)
  532. {
  533. return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
  534. }
  535. static inline int is_multi_taskfile(struct ata_taskfile *tf)
  536. {
  537. return (tf->command == ATA_CMD_READ_MULTI) ||
  538. (tf->command == ATA_CMD_WRITE_MULTI) ||
  539. (tf->command == ATA_CMD_READ_MULTI_EXT) ||
  540. (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
  541. (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
  542. }
  543. static inline int ata_ok(u8 status)
  544. {
  545. return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
  546. == ATA_DRDY);
  547. }
  548. static inline int lba_28_ok(u64 block, u32 n_block)
  549. {
  550. /* check the ending block number */
  551. return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
  552. }
  553. static inline int lba_48_ok(u64 block, u32 n_block)
  554. {
  555. /* check the ending block number */
  556. return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
  557. }
  558. #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
  559. #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
  560. #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
  561. #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
  562. u64 ata_id_n_sectors(u16 *id);
  563. u32 ata_dev_classify(u32 sig);
  564. void ata_id_c_string(const u16 *id, unsigned char *s,
  565. unsigned int ofs, unsigned int len);
  566. void ata_dump_id(u16 *id);
  567. void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
  568. #endif /* __LIBATA_H__ */