libata.h 18 KB

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  1. /*
  2. * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
  3. * Copyright 2003-2004 Jeff Garzik
  4. * Copyright (C) 2008 Freescale Semiconductor, Inc.
  5. * Dave Liu <daveliu@freescale.com>
  6. * port from libata of linux kernel
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. *
  23. */
  24. #ifndef __LIBATA_H__
  25. #define __LIBATA_H__
  26. #include <common.h>
  27. enum {
  28. /* various global constants */
  29. ATA_MAX_DEVICES = 2, /* per bus/port */
  30. ATA_MAX_PRD = 256, /* we could make these 256/256 */
  31. ATA_SECT_SIZE = 512,
  32. ATA_MAX_SECTORS_128 = 128,
  33. ATA_MAX_SECTORS = 256,
  34. ATA_MAX_SECTORS_LBA48 = 65535,
  35. ATA_MAX_SECTORS_TAPE = 65535,
  36. ATA_ID_WORDS = 256,
  37. ATA_ID_SERNO = 10,
  38. ATA_ID_FW_REV = 23,
  39. ATA_ID_PROD = 27,
  40. ATA_ID_OLD_PIO_MODES = 51,
  41. ATA_ID_FIELD_VALID = 53,
  42. ATA_ID_LBA_SECTORS = 60,
  43. ATA_ID_MWDMA_MODES = 63,
  44. ATA_ID_PIO_MODES = 64,
  45. ATA_ID_EIDE_DMA_MIN = 65,
  46. ATA_ID_EIDE_PIO = 67,
  47. ATA_ID_EIDE_PIO_IORDY = 68,
  48. ATA_ID_PIO4 = (1 << 1),
  49. ATA_ID_QUEUE_DEPTH = 75,
  50. ATA_ID_SATA_CAP = 76,
  51. ATA_ID_SATA_FEATURES = 78,
  52. ATA_ID_SATA_FEATURES_EN = 79,
  53. ATA_ID_MAJOR_VER = 80,
  54. ATA_ID_MINOR_VER = 81,
  55. ATA_ID_UDMA_MODES = 88,
  56. ATA_ID_LBA48_SECTORS = 100,
  57. ATA_ID_SERNO_LEN = 20,
  58. ATA_ID_FW_REV_LEN = 8,
  59. ATA_ID_PROD_LEN = 40,
  60. ATA_PCI_CTL_OFS = 2,
  61. ATA_PIO0 = (1 << 0),
  62. ATA_PIO1 = ATA_PIO0 | (1 << 1),
  63. ATA_PIO2 = ATA_PIO1 | (1 << 2),
  64. ATA_PIO3 = ATA_PIO2 | (1 << 3),
  65. ATA_PIO4 = ATA_PIO3 | (1 << 4),
  66. ATA_PIO5 = ATA_PIO4 | (1 << 5),
  67. ATA_PIO6 = ATA_PIO5 | (1 << 6),
  68. ATA_SWDMA0 = (1 << 0),
  69. ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
  70. ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
  71. ATA_SWDMA2_ONLY = (1 << 2),
  72. ATA_MWDMA0 = (1 << 0),
  73. ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
  74. ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
  75. ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
  76. ATA_MWDMA2_ONLY = (1 << 2),
  77. ATA_UDMA0 = (1 << 0),
  78. ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
  79. ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
  80. ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
  81. ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
  82. ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
  83. ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
  84. ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
  85. /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
  86. ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
  87. /* DMA-related */
  88. ATA_PRD_SZ = 8,
  89. ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
  90. ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
  91. ATA_DMA_TABLE_OFS = 4,
  92. ATA_DMA_STATUS = 2,
  93. ATA_DMA_CMD = 0,
  94. ATA_DMA_WR = (1 << 3),
  95. ATA_DMA_START = (1 << 0),
  96. ATA_DMA_INTR = (1 << 2),
  97. ATA_DMA_ERR = (1 << 1),
  98. ATA_DMA_ACTIVE = (1 << 0),
  99. /* bits in ATA command block registers */
  100. ATA_HOB = (1 << 7), /* LBA48 selector */
  101. ATA_NIEN = (1 << 1), /* disable-irq flag */
  102. ATA_LBA = (1 << 6), /* LBA28 selector */
  103. ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
  104. ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
  105. ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
  106. ATA_BUSY = (1 << 7), /* BSY status bit */
  107. ATA_DRDY = (1 << 6), /* device ready */
  108. ATA_DF = (1 << 5), /* device fault */
  109. ATA_DRQ = (1 << 3), /* data request i/o */
  110. ATA_ERR = (1 << 0), /* have an error */
  111. ATA_SRST = (1 << 2), /* software reset */
  112. ATA_ICRC = (1 << 7), /* interface CRC error */
  113. ATA_UNC = (1 << 6), /* uncorrectable media error */
  114. ATA_IDNF = (1 << 4), /* ID not found */
  115. ATA_ABORTED = (1 << 2), /* command aborted */
  116. /* ATA command block registers */
  117. ATA_REG_DATA = 0x00,
  118. ATA_REG_ERR = 0x01,
  119. ATA_REG_NSECT = 0x02,
  120. ATA_REG_LBAL = 0x03,
  121. ATA_REG_LBAM = 0x04,
  122. ATA_REG_LBAH = 0x05,
  123. ATA_REG_DEVICE = 0x06,
  124. ATA_REG_STATUS = 0x07,
  125. ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
  126. ATA_REG_CMD = ATA_REG_STATUS,
  127. ATA_REG_BYTEL = ATA_REG_LBAM,
  128. ATA_REG_BYTEH = ATA_REG_LBAH,
  129. ATA_REG_DEVSEL = ATA_REG_DEVICE,
  130. ATA_REG_IRQ = ATA_REG_NSECT,
  131. /* ATA device commands */
  132. ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
  133. ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
  134. ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
  135. ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
  136. ATA_CMD_EDD = 0x90, /* execute device diagnostic */
  137. ATA_CMD_FLUSH = 0xE7,
  138. ATA_CMD_FLUSH_EXT = 0xEA,
  139. ATA_CMD_ID_ATA = 0xEC,
  140. ATA_CMD_ID_ATAPI = 0xA1,
  141. ATA_CMD_READ = 0xC8,
  142. ATA_CMD_READ_EXT = 0x25,
  143. ATA_CMD_WRITE = 0xCA,
  144. ATA_CMD_WRITE_EXT = 0x35,
  145. ATA_CMD_WRITE_FUA_EXT = 0x3D,
  146. ATA_CMD_FPDMA_READ = 0x60,
  147. ATA_CMD_FPDMA_WRITE = 0x61,
  148. ATA_CMD_PIO_READ = 0x20,
  149. ATA_CMD_PIO_READ_EXT = 0x24,
  150. ATA_CMD_PIO_WRITE = 0x30,
  151. ATA_CMD_PIO_WRITE_EXT = 0x34,
  152. ATA_CMD_READ_MULTI = 0xC4,
  153. ATA_CMD_READ_MULTI_EXT = 0x29,
  154. ATA_CMD_WRITE_MULTI = 0xC5,
  155. ATA_CMD_WRITE_MULTI_EXT = 0x39,
  156. ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
  157. ATA_CMD_SET_FEATURES = 0xEF,
  158. ATA_CMD_SET_MULTI = 0xC6,
  159. ATA_CMD_PACKET = 0xA0,
  160. ATA_CMD_VERIFY = 0x40,
  161. ATA_CMD_VERIFY_EXT = 0x42,
  162. ATA_CMD_STANDBYNOW1 = 0xE0,
  163. ATA_CMD_IDLEIMMEDIATE = 0xE1,
  164. ATA_CMD_SLEEP = 0xE6,
  165. ATA_CMD_INIT_DEV_PARAMS = 0x91,
  166. ATA_CMD_READ_NATIVE_MAX = 0xF8,
  167. ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
  168. ATA_CMD_SET_MAX = 0xF9,
  169. ATA_CMD_SET_MAX_EXT = 0x37,
  170. ATA_CMD_READ_LOG_EXT = 0x2f,
  171. ATA_CMD_PMP_READ = 0xE4,
  172. ATA_CMD_PMP_WRITE = 0xE8,
  173. ATA_CMD_CONF_OVERLAY = 0xB1,
  174. ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
  175. /* READ_LOG_EXT pages */
  176. ATA_LOG_SATA_NCQ = 0x10,
  177. /* READ/WRITE LONG (obsolete) */
  178. ATA_CMD_READ_LONG = 0x22,
  179. ATA_CMD_READ_LONG_ONCE = 0x23,
  180. ATA_CMD_WRITE_LONG = 0x32,
  181. ATA_CMD_WRITE_LONG_ONCE = 0x33,
  182. /* SETFEATURES stuff */
  183. SETFEATURES_XFER = 0x03,
  184. XFER_UDMA_7 = 0x47,
  185. XFER_UDMA_6 = 0x46,
  186. XFER_UDMA_5 = 0x45,
  187. XFER_UDMA_4 = 0x44,
  188. XFER_UDMA_3 = 0x43,
  189. XFER_UDMA_2 = 0x42,
  190. XFER_UDMA_1 = 0x41,
  191. XFER_UDMA_0 = 0x40,
  192. XFER_MW_DMA_4 = 0x24, /* CFA only */
  193. XFER_MW_DMA_3 = 0x23, /* CFA only */
  194. XFER_MW_DMA_2 = 0x22,
  195. XFER_MW_DMA_1 = 0x21,
  196. XFER_MW_DMA_0 = 0x20,
  197. XFER_SW_DMA_2 = 0x12,
  198. XFER_SW_DMA_1 = 0x11,
  199. XFER_SW_DMA_0 = 0x10,
  200. XFER_PIO_6 = 0x0E, /* CFA only */
  201. XFER_PIO_5 = 0x0D, /* CFA only */
  202. XFER_PIO_4 = 0x0C,
  203. XFER_PIO_3 = 0x0B,
  204. XFER_PIO_2 = 0x0A,
  205. XFER_PIO_1 = 0x09,
  206. XFER_PIO_0 = 0x08,
  207. XFER_PIO_SLOW = 0x00,
  208. SETFEATURES_WC_ON = 0x02, /* Enable write cache */
  209. SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
  210. SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
  211. SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
  212. SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
  213. /* SETFEATURE Sector counts for SATA features */
  214. SATA_AN = 0x05, /* Asynchronous Notification */
  215. SATA_DIPM = 0x03, /* Device Initiated Power Management */
  216. /* feature values for SET_MAX */
  217. ATA_SET_MAX_ADDR = 0x00,
  218. ATA_SET_MAX_PASSWD = 0x01,
  219. ATA_SET_MAX_LOCK = 0x02,
  220. ATA_SET_MAX_UNLOCK = 0x03,
  221. ATA_SET_MAX_FREEZE_LOCK = 0x04,
  222. /* feature values for DEVICE CONFIGURATION OVERLAY */
  223. ATA_DCO_RESTORE = 0xC0,
  224. ATA_DCO_FREEZE_LOCK = 0xC1,
  225. ATA_DCO_IDENTIFY = 0xC2,
  226. ATA_DCO_SET = 0xC3,
  227. /* ATAPI stuff */
  228. ATAPI_PKT_DMA = (1 << 0),
  229. ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
  230. 0=to device, 1=to host */
  231. ATAPI_CDB_LEN = 16,
  232. /* PMP stuff */
  233. SATA_PMP_MAX_PORTS = 15,
  234. SATA_PMP_CTRL_PORT = 15,
  235. SATA_PMP_GSCR_DWORDS = 128,
  236. SATA_PMP_GSCR_PROD_ID = 0,
  237. SATA_PMP_GSCR_REV = 1,
  238. SATA_PMP_GSCR_PORT_INFO = 2,
  239. SATA_PMP_GSCR_ERROR = 32,
  240. SATA_PMP_GSCR_ERROR_EN = 33,
  241. SATA_PMP_GSCR_FEAT = 64,
  242. SATA_PMP_GSCR_FEAT_EN = 96,
  243. SATA_PMP_PSCR_STATUS = 0,
  244. SATA_PMP_PSCR_ERROR = 1,
  245. SATA_PMP_PSCR_CONTROL = 2,
  246. SATA_PMP_FEAT_BIST = (1 << 0),
  247. SATA_PMP_FEAT_PMREQ = (1 << 1),
  248. SATA_PMP_FEAT_DYNSSC = (1 << 2),
  249. SATA_PMP_FEAT_NOTIFY = (1 << 3),
  250. /* cable types */
  251. ATA_CBL_NONE = 0,
  252. ATA_CBL_PATA40 = 1,
  253. ATA_CBL_PATA80 = 2,
  254. ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
  255. ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
  256. ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
  257. ATA_CBL_SATA = 6,
  258. /* SATA Status and Control Registers */
  259. SCR_STATUS = 0,
  260. SCR_ERROR = 1,
  261. SCR_CONTROL = 2,
  262. SCR_ACTIVE = 3,
  263. SCR_NOTIFICATION = 4,
  264. /* SError bits */
  265. SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
  266. SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
  267. SERR_DATA = (1 << 8), /* unrecovered data error */
  268. SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
  269. SERR_PROTOCOL = (1 << 10), /* protocol violation */
  270. SERR_INTERNAL = (1 << 11), /* host internal error */
  271. SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
  272. SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
  273. SERR_COMM_WAKE = (1 << 18), /* Comm wake */
  274. SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
  275. SERR_DISPARITY = (1 << 20), /* Disparity */
  276. SERR_CRC = (1 << 21), /* CRC error */
  277. SERR_HANDSHAKE = (1 << 22), /* Handshake error */
  278. SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
  279. SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
  280. SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
  281. SERR_DEV_XCHG = (1 << 26), /* device exchanged */
  282. /* struct ata_taskfile flags */
  283. ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
  284. ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
  285. ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
  286. ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
  287. ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
  288. ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
  289. ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
  290. /* protocol flags */
  291. ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
  292. ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
  293. ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
  294. ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
  295. ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
  296. };
  297. enum ata_tf_protocols {
  298. /* ATA taskfile protocols */
  299. ATA_PROT_UNKNOWN, /* unknown/invalid */
  300. ATA_PROT_NODATA, /* no data */
  301. ATA_PROT_PIO, /* PIO data xfer */
  302. ATA_PROT_DMA, /* DMA */
  303. ATA_PROT_NCQ, /* NCQ */
  304. ATAPI_PROT_NODATA, /* packet command, no data */
  305. ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
  306. ATAPI_PROT_DMA, /* packet command with special DMA sauce */
  307. };
  308. enum ata_ioctls {
  309. ATA_IOC_GET_IO32 = 0x309,
  310. ATA_IOC_SET_IO32 = 0x324,
  311. };
  312. enum ata_dev_typed {
  313. ATA_DEV_ATA, /* ATA device */
  314. ATA_DEV_ATAPI, /* ATAPI device */
  315. ATA_DEV_PMP, /* Port Multiplier Port */
  316. ATA_DEV_UNKNOWN, /* unknown */
  317. };
  318. struct ata_taskfile {
  319. unsigned long flags; /* ATA_TFLAG_xxx */
  320. u8 protocol; /* ATA_PROT_xxx */
  321. u8 ctl; /* control reg */
  322. u8 hob_feature; /* additional data */
  323. u8 hob_nsect; /* to support LBA48 */
  324. u8 hob_lbal;
  325. u8 hob_lbam;
  326. u8 hob_lbah;
  327. u8 feature;
  328. u8 nsect;
  329. u8 lbal;
  330. u8 lbam;
  331. u8 lbah;
  332. u8 device;
  333. u8 command; /* IO operation */
  334. };
  335. /*
  336. * protocol tests
  337. */
  338. static inline unsigned int ata_prot_flags(u8 prot)
  339. {
  340. switch (prot) {
  341. case ATA_PROT_NODATA:
  342. return 0;
  343. case ATA_PROT_PIO:
  344. return ATA_PROT_FLAG_PIO;
  345. case ATA_PROT_DMA:
  346. return ATA_PROT_FLAG_DMA;
  347. case ATA_PROT_NCQ:
  348. return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
  349. case ATAPI_PROT_NODATA:
  350. return ATA_PROT_FLAG_ATAPI;
  351. case ATAPI_PROT_PIO:
  352. return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
  353. case ATAPI_PROT_DMA:
  354. return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
  355. }
  356. return 0;
  357. }
  358. static inline int ata_is_atapi(u8 prot)
  359. {
  360. return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
  361. }
  362. static inline int ata_is_nodata(u8 prot)
  363. {
  364. return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
  365. }
  366. static inline int ata_is_pio(u8 prot)
  367. {
  368. return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
  369. }
  370. static inline int ata_is_dma(u8 prot)
  371. {
  372. return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
  373. }
  374. static inline int ata_is_ncq(u8 prot)
  375. {
  376. return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
  377. }
  378. static inline int ata_is_data(u8 prot)
  379. {
  380. return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
  381. }
  382. /*
  383. * id tests
  384. */
  385. #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
  386. #define ata_id_has_lba(id) ((id)[49] & (1 << 9))
  387. #define ata_id_has_dma(id) ((id)[49] & (1 << 8))
  388. #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
  389. #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
  390. #define ata_id_removeable(id) ((id)[0] & (1 << 7))
  391. #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
  392. #define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
  393. #define ata_id_u32(id,n) \
  394. (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
  395. #define ata_id_u64(id,n) \
  396. ( ((u64) (id)[(n) + 3] << 48) | \
  397. ((u64) (id)[(n) + 2] << 32) | \
  398. ((u64) (id)[(n) + 1] << 16) | \
  399. ((u64) (id)[(n) + 0]) )
  400. #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
  401. static inline int ata_id_has_fua(const u16 *id)
  402. {
  403. if ((id[84] & 0xC000) != 0x4000)
  404. return 0;
  405. return id[84] & (1 << 6);
  406. }
  407. static inline int ata_id_has_flush(const u16 *id)
  408. {
  409. if ((id[83] & 0xC000) != 0x4000)
  410. return 0;
  411. return id[83] & (1 << 12);
  412. }
  413. static inline int ata_id_has_flush_ext(const u16 *id)
  414. {
  415. if ((id[83] & 0xC000) != 0x4000)
  416. return 0;
  417. return id[83] & (1 << 13);
  418. }
  419. static inline int ata_id_has_lba48(const u16 *id)
  420. {
  421. if ((id[83] & 0xC000) != 0x4000)
  422. return 0;
  423. if (!ata_id_u64(id, 100))
  424. return 0;
  425. return id[83] & (1 << 10);
  426. }
  427. static inline int ata_id_hpa_enabled(const u16 *id)
  428. {
  429. /* Yes children, word 83 valid bits cover word 82 data */
  430. if ((id[83] & 0xC000) != 0x4000)
  431. return 0;
  432. /* And 87 covers 85-87 */
  433. if ((id[87] & 0xC000) != 0x4000)
  434. return 0;
  435. /* Check command sets enabled as well as supported */
  436. if ((id[85] & ( 1 << 10)) == 0)
  437. return 0;
  438. return id[82] & (1 << 10);
  439. }
  440. static inline int ata_id_has_wcache(const u16 *id)
  441. {
  442. /* Yes children, word 83 valid bits cover word 82 data */
  443. if ((id[83] & 0xC000) != 0x4000)
  444. return 0;
  445. return id[82] & (1 << 5);
  446. }
  447. static inline int ata_id_has_pm(const u16 *id)
  448. {
  449. if ((id[83] & 0xC000) != 0x4000)
  450. return 0;
  451. return id[82] & (1 << 3);
  452. }
  453. static inline int ata_id_rahead_enabled(const u16 *id)
  454. {
  455. if ((id[87] & 0xC000) != 0x4000)
  456. return 0;
  457. return id[85] & (1 << 6);
  458. }
  459. static inline int ata_id_wcache_enabled(const u16 *id)
  460. {
  461. if ((id[87] & 0xC000) != 0x4000)
  462. return 0;
  463. return id[85] & (1 << 5);
  464. }
  465. static inline unsigned int ata_id_major_version(const u16 *id)
  466. {
  467. unsigned int mver;
  468. if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
  469. return 0;
  470. for (mver = 14; mver >= 1; mver--)
  471. if (id[ATA_ID_MAJOR_VER] & (1 << mver))
  472. break;
  473. return mver;
  474. }
  475. static inline int ata_id_is_sata(const u16 *id)
  476. {
  477. return ata_id_major_version(id) >= 5 && id[93] == 0;
  478. }
  479. static inline int ata_id_has_tpm(const u16 *id)
  480. {
  481. /* The TPM bits are only valid on ATA8 */
  482. if (ata_id_major_version(id) < 8)
  483. return 0;
  484. if ((id[48] & 0xC000) != 0x4000)
  485. return 0;
  486. return id[48] & (1 << 0);
  487. }
  488. static inline int ata_id_has_dword_io(const u16 *id)
  489. {
  490. /* ATA 8 reuses this flag for "trusted" computing */
  491. if (ata_id_major_version(id) > 7)
  492. return 0;
  493. if (id[48] & (1 << 0))
  494. return 1;
  495. return 0;
  496. }
  497. static inline int ata_id_current_chs_valid(const u16 *id)
  498. {
  499. /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
  500. has not been issued to the device then the values of
  501. id[54] to id[56] are vendor specific. */
  502. return (id[53] & 0x01) && /* Current translation valid */
  503. id[54] && /* cylinders in current translation */
  504. id[55] && /* heads in current translation */
  505. id[55] <= 16 &&
  506. id[56]; /* sectors in current translation */
  507. }
  508. static inline int ata_id_is_cfa(const u16 *id)
  509. {
  510. u16 v = id[0];
  511. if (v == 0x848A) /* Standard CF */
  512. return 1;
  513. /* Could be CF hiding as standard ATA */
  514. if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
  515. (id[82] & ( 1 << 2)))
  516. return 1;
  517. return 0;
  518. }
  519. static inline int ata_drive_40wire(const u16 *dev_id)
  520. {
  521. if (ata_id_is_sata(dev_id))
  522. return 0; /* SATA */
  523. if ((dev_id[93] & 0xE000) == 0x6000)
  524. return 0; /* 80 wire */
  525. return 1;
  526. }
  527. static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
  528. {
  529. if ((dev_id[93] & 0x2000) == 0x2000)
  530. return 0; /* 80 wire */
  531. return 1;
  532. }
  533. static inline int atapi_cdb_len(const u16 *dev_id)
  534. {
  535. u16 tmp = dev_id[0] & 0x3;
  536. switch (tmp) {
  537. case 0: return 12;
  538. case 1: return 16;
  539. default: return -1;
  540. }
  541. }
  542. static inline int atapi_command_packet_set(const u16 *dev_id)
  543. {
  544. return (dev_id[0] >> 8) & 0x1f;
  545. }
  546. static inline int atapi_id_dmadir(const u16 *dev_id)
  547. {
  548. return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
  549. }
  550. static inline int is_multi_taskfile(struct ata_taskfile *tf)
  551. {
  552. return (tf->command == ATA_CMD_READ_MULTI) ||
  553. (tf->command == ATA_CMD_WRITE_MULTI) ||
  554. (tf->command == ATA_CMD_READ_MULTI_EXT) ||
  555. (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
  556. (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
  557. }
  558. static inline int ata_ok(u8 status)
  559. {
  560. return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
  561. == ATA_DRDY);
  562. }
  563. static inline int lba_28_ok(u64 block, u32 n_block)
  564. {
  565. /* check the ending block number */
  566. return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
  567. }
  568. static inline int lba_48_ok(u64 block, u32 n_block)
  569. {
  570. /* check the ending block number */
  571. return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
  572. }
  573. #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
  574. #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
  575. #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
  576. #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
  577. u64 ata_id_n_sectors(u16 *id);
  578. u32 ata_dev_classify(u32 sig);
  579. void ata_id_c_string(const u16 *id, unsigned char *s,
  580. unsigned int ofs, unsigned int len);
  581. void ata_dump_id(u16 *id);
  582. void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
  583. #endif /* __LIBATA_H__ */