| 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 | |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/ioport.h> |
| 11 | #include <linux/ata.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/pci.h> |
| 18 | #include <linux/completion.h> |
| 19 | #include <linux/pm.h> |
| 20 | #include <linux/mutex.h> |
| 21 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 22 | #include <acpi/acpi.h> |
| 23 | #endif |
| 24 | #include <asm/byteorder.h> |
| 25 | #include <asm/io.h> |
| 26 | |
| 27 | /* for request_sense */ |
| 28 | #include <linux/cdrom.h> |
| 29 | |
| 30 | #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) |
| 31 | # define SUPPORT_VLB_SYNC 0 |
| 32 | #else |
| 33 | # define SUPPORT_VLB_SYNC 1 |
| 34 | #endif |
| 35 | |
| 36 | /* |
| 37 | * Probably not wise to fiddle with these |
| 38 | */ |
| 39 | #define IDE_DEFAULT_MAX_FAILURES 1 |
| 40 | #define ERROR_MAX 8 /* Max read/write errors per sector */ |
| 41 | #define ERROR_RESET 3 /* Reset controller every 4th retry */ |
| 42 | #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ |
| 43 | |
| 44 | struct device; |
| 45 | |
| 46 | /* Error codes returned in rq->errors to the higher part of the driver. */ |
| 47 | enum { |
| 48 | IDE_DRV_ERROR_GENERAL = 101, |
| 49 | IDE_DRV_ERROR_FILEMARK = 102, |
| 50 | IDE_DRV_ERROR_EOD = 103, |
| 51 | }; |
| 52 | |
| 53 | /* |
| 54 | * Definitions for accessing IDE controller registers |
| 55 | */ |
| 56 | #define IDE_NR_PORTS (10) |
| 57 | |
| 58 | struct ide_io_ports { |
| 59 | unsigned long data_addr; |
| 60 | |
| 61 | union { |
| 62 | unsigned long error_addr; /* read: error */ |
| 63 | unsigned long feature_addr; /* write: feature */ |
| 64 | }; |
| 65 | |
| 66 | unsigned long nsect_addr; |
| 67 | unsigned long lbal_addr; |
| 68 | unsigned long lbam_addr; |
| 69 | unsigned long lbah_addr; |
| 70 | |
| 71 | unsigned long device_addr; |
| 72 | |
| 73 | union { |
| 74 | unsigned long status_addr; /* read: status */ |
| 75 | unsigned long command_addr; /* write: command */ |
| 76 | }; |
| 77 | |
| 78 | unsigned long ctl_addr; |
| 79 | |
| 80 | unsigned long irq_addr; |
| 81 | }; |
| 82 | |
| 83 | #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) |
| 84 | |
| 85 | #define BAD_R_STAT (ATA_BUSY | ATA_ERR) |
| 86 | #define BAD_W_STAT (BAD_R_STAT | ATA_DF) |
| 87 | #define BAD_STAT (BAD_R_STAT | ATA_DRQ) |
| 88 | #define DRIVE_READY (ATA_DRDY | ATA_DSC) |
| 89 | |
| 90 | #define BAD_CRC (ATA_ABORTED | ATA_ICRC) |
| 91 | |
| 92 | #define SATA_NR_PORTS (3) /* 16 possible ?? */ |
| 93 | |
| 94 | #define SATA_STATUS_OFFSET (0) |
| 95 | #define SATA_ERROR_OFFSET (1) |
| 96 | #define SATA_CONTROL_OFFSET (2) |
| 97 | |
| 98 | /* |
| 99 | * Our Physical Region Descriptor (PRD) table should be large enough |
| 100 | * to handle the biggest I/O request we are likely to see. Since requests |
| 101 | * can have no more than 256 sectors, and since the typical blocksize is |
| 102 | * two or more sectors, we could get by with a limit of 128 entries here for |
| 103 | * the usual worst case. Most requests seem to include some contiguous blocks, |
| 104 | * further reducing the number of table entries required. |
| 105 | * |
| 106 | * The driver reverts to PIO mode for individual requests that exceed |
| 107 | * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling |
| 108 | * 100% of all crazy scenarios here is not necessary. |
| 109 | * |
| 110 | * As it turns out though, we must allocate a full 4KB page for this, |
| 111 | * so the two PRD tables (ide0 & ide1) will each get half of that, |
| 112 | * allowing each to have about 256 entries (8 bytes each) from this. |
| 113 | */ |
| 114 | #define PRD_BYTES 8 |
| 115 | #define PRD_ENTRIES 256 |
| 116 | |
| 117 | /* |
| 118 | * Some more useful definitions |
| 119 | */ |
| 120 | #define PARTN_BITS 6 /* number of minor dev bits for partitions */ |
| 121 | #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ |
| 122 | #define SECTOR_SIZE 512 |
| 123 | |
| 124 | /* |
| 125 | * Timeouts for various operations: |
| 126 | */ |
| 127 | enum { |
| 128 | /* spec allows up to 20ms, but CF cards and SSD drives need more */ |
| 129 | WAIT_DRQ = 1 * HZ, /* 1s */ |
| 130 | /* some laptops are very slow */ |
| 131 | WAIT_READY = 5 * HZ, /* 5s */ |
| 132 | /* should be less than 3ms (?), if all ATAPI CD is closed at boot */ |
| 133 | WAIT_PIDENTIFY = 10 * HZ, /* 10s */ |
| 134 | /* worst case when spinning up */ |
| 135 | WAIT_WORSTCASE = 30 * HZ, /* 30s */ |
| 136 | /* maximum wait for an IRQ to happen */ |
| 137 | WAIT_CMD = 10 * HZ, /* 10s */ |
| 138 | /* Some drives require a longer IRQ timeout. */ |
| 139 | WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */ |
| 140 | /* |
| 141 | * Some drives (for example, Seagate STT3401A Travan) require a very |
| 142 | * long timeout, because they don't return an interrupt or clear their |
| 143 | * BSY bit until after the command completes (even retension commands). |
| 144 | */ |
| 145 | WAIT_TAPE_CMD = 900 * HZ, /* 900s */ |
| 146 | /* minimum sleep time */ |
| 147 | WAIT_MIN_SLEEP = HZ / 50, /* 20ms */ |
| 148 | }; |
| 149 | |
| 150 | /* |
| 151 | * Op codes for special requests to be handled by ide_special_rq(). |
| 152 | * Values should be in the range of 0x20 to 0x3f. |
| 153 | */ |
| 154 | #define REQ_DRIVE_RESET 0x20 |
| 155 | #define REQ_DEVSET_EXEC 0x21 |
| 156 | #define REQ_PARK_HEADS 0x22 |
| 157 | #define REQ_UNPARK_HEADS 0x23 |
| 158 | |
| 159 | /* |
| 160 | * hwif_chipset_t is used to keep track of the specific hardware |
| 161 | * chipset used by each IDE interface, if known. |
| 162 | */ |
| 163 | enum { ide_unknown, ide_generic, ide_pci, |
| 164 | ide_cmd640, ide_dtc2278, ide_ali14xx, |
| 165 | ide_qd65xx, ide_umc8672, ide_ht6560b, |
| 166 | ide_4drives, ide_pmac, ide_acorn, |
| 167 | ide_au1xxx, ide_palm3710 |
| 168 | }; |
| 169 | |
| 170 | typedef u8 hwif_chipset_t; |
| 171 | |
| 172 | /* |
| 173 | * Structure to hold all information about the location of this port |
| 174 | */ |
| 175 | struct ide_hw { |
| 176 | union { |
| 177 | struct ide_io_ports io_ports; |
| 178 | unsigned long io_ports_array[IDE_NR_PORTS]; |
| 179 | }; |
| 180 | |
| 181 | int irq; /* our irq number */ |
| 182 | struct device *dev, *parent; |
| 183 | unsigned long config; |
| 184 | }; |
| 185 | |
| 186 | static inline void ide_std_init_ports(struct ide_hw *hw, |
| 187 | unsigned long io_addr, |
| 188 | unsigned long ctl_addr) |
| 189 | { |
| 190 | unsigned int i; |
| 191 | |
| 192 | for (i = 0; i <= 7; i++) |
| 193 | hw->io_ports_array[i] = io_addr++; |
| 194 | |
| 195 | hw->io_ports.ctl_addr = ctl_addr; |
| 196 | } |
| 197 | |
| 198 | #define MAX_HWIFS 10 |
| 199 | |
| 200 | /* |
| 201 | * Now for the data we need to maintain per-drive: ide_drive_t |
| 202 | */ |
| 203 | |
| 204 | #define ide_scsi 0x21 |
| 205 | #define ide_disk 0x20 |
| 206 | #define ide_optical 0x7 |
| 207 | #define ide_cdrom 0x5 |
| 208 | #define ide_tape 0x1 |
| 209 | #define ide_floppy 0x0 |
| 210 | |
| 211 | /* |
| 212 | * Special Driver Flags |
| 213 | */ |
| 214 | enum { |
| 215 | IDE_SFLAG_SET_GEOMETRY = (1 << 0), |
| 216 | IDE_SFLAG_RECALIBRATE = (1 << 1), |
| 217 | IDE_SFLAG_SET_MULTMODE = (1 << 2), |
| 218 | }; |
| 219 | |
| 220 | /* |
| 221 | * Status returned from various ide_ functions |
| 222 | */ |
| 223 | typedef enum { |
| 224 | ide_stopped, /* no drive operation was started */ |
| 225 | ide_started, /* a drive operation was started, handler was set */ |
| 226 | } ide_startstop_t; |
| 227 | |
| 228 | enum { |
| 229 | IDE_VALID_ERROR = (1 << 1), |
| 230 | IDE_VALID_FEATURE = IDE_VALID_ERROR, |
| 231 | IDE_VALID_NSECT = (1 << 2), |
| 232 | IDE_VALID_LBAL = (1 << 3), |
| 233 | IDE_VALID_LBAM = (1 << 4), |
| 234 | IDE_VALID_LBAH = (1 << 5), |
| 235 | IDE_VALID_DEVICE = (1 << 6), |
| 236 | IDE_VALID_LBA = IDE_VALID_LBAL | |
| 237 | IDE_VALID_LBAM | |
| 238 | IDE_VALID_LBAH, |
| 239 | IDE_VALID_OUT_TF = IDE_VALID_FEATURE | |
| 240 | IDE_VALID_NSECT | |
| 241 | IDE_VALID_LBA, |
| 242 | IDE_VALID_IN_TF = IDE_VALID_NSECT | |
| 243 | IDE_VALID_LBA, |
| 244 | IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF, |
| 245 | IDE_VALID_IN_HOB = IDE_VALID_ERROR | |
| 246 | IDE_VALID_NSECT | |
| 247 | IDE_VALID_LBA, |
| 248 | }; |
| 249 | |
| 250 | enum { |
| 251 | IDE_TFLAG_LBA48 = (1 << 0), |
| 252 | IDE_TFLAG_WRITE = (1 << 1), |
| 253 | IDE_TFLAG_CUSTOM_HANDLER = (1 << 2), |
| 254 | IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3), |
| 255 | /* force 16-bit I/O operations */ |
| 256 | IDE_TFLAG_IO_16BIT = (1 << 4), |
| 257 | /* struct ide_cmd was allocated using kmalloc() */ |
| 258 | IDE_TFLAG_DYN = (1 << 5), |
| 259 | IDE_TFLAG_FS = (1 << 6), |
| 260 | IDE_TFLAG_MULTI_PIO = (1 << 7), |
| 261 | IDE_TFLAG_SET_XFER = (1 << 8), |
| 262 | }; |
| 263 | |
| 264 | enum { |
| 265 | IDE_FTFLAG_FLAGGED = (1 << 0), |
| 266 | IDE_FTFLAG_SET_IN_FLAGS = (1 << 1), |
| 267 | IDE_FTFLAG_OUT_DATA = (1 << 2), |
| 268 | IDE_FTFLAG_IN_DATA = (1 << 3), |
| 269 | }; |
| 270 | |
| 271 | struct ide_taskfile { |
| 272 | u8 data; /* 0: data byte (for TASKFILE ioctl) */ |
| 273 | union { /* 1: */ |
| 274 | u8 error; /* read: error */ |
| 275 | u8 feature; /* write: feature */ |
| 276 | }; |
| 277 | u8 nsect; /* 2: number of sectors */ |
| 278 | u8 lbal; /* 3: LBA low */ |
| 279 | u8 lbam; /* 4: LBA mid */ |
| 280 | u8 lbah; /* 5: LBA high */ |
| 281 | u8 device; /* 6: device select */ |
| 282 | union { /* 7: */ |
| 283 | u8 status; /* read: status */ |
| 284 | u8 command; /* write: command */ |
| 285 | }; |
| 286 | }; |
| 287 | |
| 288 | struct ide_cmd { |
| 289 | struct ide_taskfile tf; |
| 290 | struct ide_taskfile hob; |
| 291 | struct { |
| 292 | struct { |
| 293 | u8 tf; |
| 294 | u8 hob; |
| 295 | } out, in; |
| 296 | } valid; |
| 297 | |
| 298 | u16 tf_flags; |
| 299 | u8 ftf_flags; /* for TASKFILE ioctl */ |
| 300 | int protocol; |
| 301 | |
| 302 | int sg_nents; /* number of sg entries */ |
| 303 | int orig_sg_nents; |
| 304 | int sg_dma_direction; /* DMA transfer direction */ |
| 305 | |
| 306 | unsigned int nbytes; |
| 307 | unsigned int nleft; |
| 308 | unsigned int last_xfer_len; |
| 309 | |
| 310 | struct scatterlist *cursg; |
| 311 | unsigned int cursg_ofs; |
| 312 | |
| 313 | struct request *rq; /* copy of request */ |
| 314 | }; |
| 315 | |
| 316 | /* ATAPI packet command flags */ |
| 317 | enum { |
| 318 | /* set when an error is considered normal - no retry (ide-tape) */ |
| 319 | PC_FLAG_ABORT = (1 << 0), |
| 320 | PC_FLAG_SUPPRESS_ERROR = (1 << 1), |
| 321 | PC_FLAG_WAIT_FOR_DSC = (1 << 2), |
| 322 | PC_FLAG_DMA_OK = (1 << 3), |
| 323 | PC_FLAG_DMA_IN_PROGRESS = (1 << 4), |
| 324 | PC_FLAG_DMA_ERROR = (1 << 5), |
| 325 | PC_FLAG_WRITING = (1 << 6), |
| 326 | }; |
| 327 | |
| 328 | #define ATAPI_WAIT_PC (60 * HZ) |
| 329 | |
| 330 | struct ide_atapi_pc { |
| 331 | /* actual packet bytes */ |
| 332 | u8 c[12]; |
| 333 | /* incremented on each retry */ |
| 334 | int retries; |
| 335 | int error; |
| 336 | |
| 337 | /* bytes to transfer */ |
| 338 | int req_xfer; |
| 339 | |
| 340 | /* the corresponding request */ |
| 341 | struct request *rq; |
| 342 | |
| 343 | unsigned long flags; |
| 344 | |
| 345 | /* |
| 346 | * those are more or less driver-specific and some of them are subject |
| 347 | * to change/removal later. |
| 348 | */ |
| 349 | unsigned long timeout; |
| 350 | }; |
| 351 | |
| 352 | struct ide_devset; |
| 353 | struct ide_driver; |
| 354 | |
| 355 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 356 | struct ide_acpi_drive_link; |
| 357 | struct ide_acpi_hwif_link; |
| 358 | #endif |
| 359 | |
| 360 | struct ide_drive_s; |
| 361 | |
| 362 | struct ide_disk_ops { |
| 363 | int (*check)(struct ide_drive_s *, const char *); |
| 364 | int (*get_capacity)(struct ide_drive_s *); |
| 365 | void (*unlock_native_capacity)(struct ide_drive_s *); |
| 366 | void (*setup)(struct ide_drive_s *); |
| 367 | void (*flush)(struct ide_drive_s *); |
| 368 | int (*init_media)(struct ide_drive_s *, struct gendisk *); |
| 369 | int (*set_doorlock)(struct ide_drive_s *, struct gendisk *, |
| 370 | int); |
| 371 | ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *, |
| 372 | sector_t); |
| 373 | int (*ioctl)(struct ide_drive_s *, struct block_device *, |
| 374 | fmode_t, unsigned int, unsigned long); |
| 375 | }; |
| 376 | |
| 377 | /* ATAPI device flags */ |
| 378 | enum { |
| 379 | IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), |
| 380 | |
| 381 | /* ide-cd */ |
| 382 | /* Drive cannot eject the disc. */ |
| 383 | IDE_AFLAG_NO_EJECT = (1 << 1), |
| 384 | /* Drive is a pre ATAPI 1.2 drive. */ |
| 385 | IDE_AFLAG_PRE_ATAPI12 = (1 << 2), |
| 386 | /* TOC addresses are in BCD. */ |
| 387 | IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3), |
| 388 | /* TOC track numbers are in BCD. */ |
| 389 | IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4), |
| 390 | /* Saved TOC information is current. */ |
| 391 | IDE_AFLAG_TOC_VALID = (1 << 6), |
| 392 | /* We think that the drive door is locked. */ |
| 393 | IDE_AFLAG_DOOR_LOCKED = (1 << 7), |
| 394 | /* SET_CD_SPEED command is unsupported. */ |
| 395 | IDE_AFLAG_NO_SPEED_SELECT = (1 << 8), |
| 396 | IDE_AFLAG_VERTOS_300_SSD = (1 << 9), |
| 397 | IDE_AFLAG_VERTOS_600_ESD = (1 << 10), |
| 398 | IDE_AFLAG_SANYO_3CD = (1 << 11), |
| 399 | IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12), |
| 400 | IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13), |
| 401 | IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14), |
| 402 | |
| 403 | /* ide-floppy */ |
| 404 | /* Avoid commands not supported in Clik drive */ |
| 405 | IDE_AFLAG_CLIK_DRIVE = (1 << 15), |
| 406 | /* Requires BH algorithm for packets */ |
| 407 | IDE_AFLAG_ZIP_DRIVE = (1 << 16), |
| 408 | /* Supports format progress report */ |
| 409 | IDE_AFLAG_SRFP = (1 << 17), |
| 410 | |
| 411 | /* ide-tape */ |
| 412 | IDE_AFLAG_IGNORE_DSC = (1 << 18), |
| 413 | /* 0 When the tape position is unknown */ |
| 414 | IDE_AFLAG_ADDRESS_VALID = (1 << 19), |
| 415 | /* Device already opened */ |
| 416 | IDE_AFLAG_BUSY = (1 << 20), |
| 417 | /* Attempt to auto-detect the current user block size */ |
| 418 | IDE_AFLAG_DETECT_BS = (1 << 21), |
| 419 | /* Currently on a filemark */ |
| 420 | IDE_AFLAG_FILEMARK = (1 << 22), |
| 421 | /* 0 = no tape is loaded, so we don't rewind after ejecting */ |
| 422 | IDE_AFLAG_MEDIUM_PRESENT = (1 << 23), |
| 423 | |
| 424 | IDE_AFLAG_NO_AUTOCLOSE = (1 << 24), |
| 425 | }; |
| 426 | |
| 427 | /* device flags */ |
| 428 | enum { |
| 429 | /* restore settings after device reset */ |
| 430 | IDE_DFLAG_KEEP_SETTINGS = (1 << 0), |
| 431 | /* device is using DMA for read/write */ |
| 432 | IDE_DFLAG_USING_DMA = (1 << 1), |
| 433 | /* okay to unmask other IRQs */ |
| 434 | IDE_DFLAG_UNMASK = (1 << 2), |
| 435 | /* don't attempt flushes */ |
| 436 | IDE_DFLAG_NOFLUSH = (1 << 3), |
| 437 | /* DSC overlap */ |
| 438 | IDE_DFLAG_DSC_OVERLAP = (1 << 4), |
| 439 | /* give potential excess bandwidth */ |
| 440 | IDE_DFLAG_NICE1 = (1 << 5), |
| 441 | /* device is physically present */ |
| 442 | IDE_DFLAG_PRESENT = (1 << 6), |
| 443 | /* disable Host Protected Area */ |
| 444 | IDE_DFLAG_NOHPA = (1 << 7), |
| 445 | /* id read from device (synthetic if not set) */ |
| 446 | IDE_DFLAG_ID_READ = (1 << 8), |
| 447 | IDE_DFLAG_NOPROBE = (1 << 9), |
| 448 | /* need to do check_media_change() */ |
| 449 | IDE_DFLAG_REMOVABLE = (1 << 10), |
| 450 | /* needed for removable devices */ |
| 451 | IDE_DFLAG_ATTACH = (1 << 11), |
| 452 | IDE_DFLAG_FORCED_GEOM = (1 << 12), |
| 453 | /* disallow setting unmask bit */ |
| 454 | IDE_DFLAG_NO_UNMASK = (1 << 13), |
| 455 | /* disallow enabling 32-bit I/O */ |
| 456 | IDE_DFLAG_NO_IO_32BIT = (1 << 14), |
| 457 | /* for removable only: door lock/unlock works */ |
| 458 | IDE_DFLAG_DOORLOCKING = (1 << 15), |
| 459 | /* disallow DMA */ |
| 460 | IDE_DFLAG_NODMA = (1 << 16), |
| 461 | /* powermanagement told us not to do anything, so sleep nicely */ |
| 462 | IDE_DFLAG_BLOCKED = (1 << 17), |
| 463 | /* sleeping & sleep field valid */ |
| 464 | IDE_DFLAG_SLEEPING = (1 << 18), |
| 465 | IDE_DFLAG_POST_RESET = (1 << 19), |
| 466 | IDE_DFLAG_UDMA33_WARNED = (1 << 20), |
| 467 | IDE_DFLAG_LBA48 = (1 << 21), |
| 468 | /* status of write cache */ |
| 469 | IDE_DFLAG_WCACHE = (1 << 22), |
| 470 | /* used for ignoring ATA_DF */ |
| 471 | IDE_DFLAG_NOWERR = (1 << 23), |
| 472 | /* retrying in PIO */ |
| 473 | IDE_DFLAG_DMA_PIO_RETRY = (1 << 24), |
| 474 | IDE_DFLAG_LBA = (1 << 25), |
| 475 | /* don't unload heads */ |
| 476 | IDE_DFLAG_NO_UNLOAD = (1 << 26), |
| 477 | /* heads unloaded, please don't reset port */ |
| 478 | IDE_DFLAG_PARKED = (1 << 27), |
| 479 | IDE_DFLAG_MEDIA_CHANGED = (1 << 28), |
| 480 | /* write protect */ |
| 481 | IDE_DFLAG_WP = (1 << 29), |
| 482 | IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30), |
| 483 | IDE_DFLAG_NIEN_QUIRK = (1 << 31), |
| 484 | }; |
| 485 | |
| 486 | struct ide_drive_s { |
| 487 | char name[4]; /* drive name, such as "hda" */ |
| 488 | char driver_req[10]; /* requests specific driver */ |
| 489 | |
| 490 | struct request_queue *queue; /* request queue */ |
| 491 | |
| 492 | struct request *rq; /* current request */ |
| 493 | void *driver_data; /* extra driver data */ |
| 494 | u16 *id; /* identification info */ |
| 495 | #ifdef CONFIG_IDE_PROC_FS |
| 496 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| 497 | const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */ |
| 498 | #endif |
| 499 | struct hwif_s *hwif; /* actually (ide_hwif_t *) */ |
| 500 | |
| 501 | const struct ide_disk_ops *disk_ops; |
| 502 | |
| 503 | unsigned long dev_flags; |
| 504 | |
| 505 | unsigned long sleep; /* sleep until this time */ |
| 506 | unsigned long timeout; /* max time to wait for irq */ |
| 507 | |
| 508 | u8 special_flags; /* special action flags */ |
| 509 | |
| 510 | u8 select; /* basic drive/head select reg value */ |
| 511 | u8 retry_pio; /* retrying dma capable host in pio */ |
| 512 | u8 waiting_for_dma; /* dma currently in progress */ |
| 513 | u8 dma; /* atapi dma flag */ |
| 514 | |
| 515 | u8 init_speed; /* transfer rate set at boot */ |
| 516 | u8 current_speed; /* current transfer rate set */ |
| 517 | u8 desired_speed; /* desired transfer rate set */ |
| 518 | u8 pio_mode; /* for ->set_pio_mode _only_ */ |
| 519 | u8 dma_mode; /* for ->set_dma_mode _only_ */ |
| 520 | u8 dn; /* now wide spread use */ |
| 521 | u8 acoustic; /* acoustic management */ |
| 522 | u8 media; /* disk, cdrom, tape, floppy, ... */ |
| 523 | u8 ready_stat; /* min status value for drive ready */ |
| 524 | u8 mult_count; /* current multiple sector setting */ |
| 525 | u8 mult_req; /* requested multiple sector setting */ |
| 526 | u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ |
| 527 | u8 bad_wstat; /* used for ignoring ATA_DF */ |
| 528 | u8 head; /* "real" number of heads */ |
| 529 | u8 sect; /* "real" sectors per track */ |
| 530 | u8 bios_head; /* BIOS/fdisk/LILO number of heads */ |
| 531 | u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ |
| 532 | |
| 533 | /* delay this long before sending packet command */ |
| 534 | u8 pc_delay; |
| 535 | |
| 536 | unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ |
| 537 | unsigned int cyl; /* "real" number of cyls */ |
| 538 | void *drive_data; /* used by set_pio_mode/dev_select() */ |
| 539 | unsigned int failures; /* current failure count */ |
| 540 | unsigned int max_failures; /* maximum allowed failure count */ |
| 541 | u64 probed_capacity;/* initial/native media capacity */ |
| 542 | u64 capacity64; /* total number of sectors */ |
| 543 | |
| 544 | int lun; /* logical unit */ |
| 545 | int crc_count; /* crc counter to reduce drive speed */ |
| 546 | |
| 547 | unsigned long debug_mask; /* debugging levels switch */ |
| 548 | |
| 549 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 550 | struct ide_acpi_drive_link *acpidata; |
| 551 | #endif |
| 552 | struct list_head list; |
| 553 | struct device gendev; |
| 554 | struct completion gendev_rel_comp; /* to deal with device release() */ |
| 555 | |
| 556 | /* current packet command */ |
| 557 | struct ide_atapi_pc *pc; |
| 558 | |
| 559 | /* last failed packet command */ |
| 560 | struct ide_atapi_pc *failed_pc; |
| 561 | |
| 562 | /* callback for packet commands */ |
| 563 | int (*pc_callback)(struct ide_drive_s *, int); |
| 564 | |
| 565 | ide_startstop_t (*irq_handler)(struct ide_drive_s *); |
| 566 | |
| 567 | unsigned long atapi_flags; |
| 568 | |
| 569 | struct ide_atapi_pc request_sense_pc; |
| 570 | |
| 571 | /* current sense rq and buffer */ |
| 572 | bool sense_rq_armed; |
| 573 | struct request sense_rq; |
| 574 | struct request_sense sense_data; |
| 575 | }; |
| 576 | |
| 577 | typedef struct ide_drive_s ide_drive_t; |
| 578 | |
| 579 | #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev) |
| 580 | |
| 581 | #define to_ide_drv(obj, cont_type) \ |
| 582 | container_of(obj, struct cont_type, dev) |
| 583 | |
| 584 | #define ide_drv_g(disk, cont_type) \ |
| 585 | container_of((disk)->private_data, struct cont_type, driver) |
| 586 | |
| 587 | struct ide_port_info; |
| 588 | |
| 589 | struct ide_tp_ops { |
| 590 | void (*exec_command)(struct hwif_s *, u8); |
| 591 | u8 (*read_status)(struct hwif_s *); |
| 592 | u8 (*read_altstatus)(struct hwif_s *); |
| 593 | void (*write_devctl)(struct hwif_s *, u8); |
| 594 | |
| 595 | void (*dev_select)(ide_drive_t *); |
| 596 | void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8); |
| 597 | void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8); |
| 598 | |
| 599 | void (*input_data)(ide_drive_t *, struct ide_cmd *, |
| 600 | void *, unsigned int); |
| 601 | void (*output_data)(ide_drive_t *, struct ide_cmd *, |
| 602 | void *, unsigned int); |
| 603 | }; |
| 604 | |
| 605 | extern const struct ide_tp_ops default_tp_ops; |
| 606 | |
| 607 | /** |
| 608 | * struct ide_port_ops - IDE port operations |
| 609 | * |
| 610 | * @init_dev: host specific initialization of a device |
| 611 | * @set_pio_mode: routine to program host for PIO mode |
| 612 | * @set_dma_mode: routine to program host for DMA mode |
| 613 | * @reset_poll: chipset polling based on hba specifics |
| 614 | * @pre_reset: chipset specific changes to default for device-hba resets |
| 615 | * @resetproc: routine to reset controller after a disk reset |
| 616 | * @maskproc: special host masking for drive selection |
| 617 | * @quirkproc: check host's drive quirk list |
| 618 | * @clear_irq: clear IRQ |
| 619 | * |
| 620 | * @mdma_filter: filter MDMA modes |
| 621 | * @udma_filter: filter UDMA modes |
| 622 | * |
| 623 | * @cable_detect: detect cable type |
| 624 | */ |
| 625 | struct ide_port_ops { |
| 626 | void (*init_dev)(ide_drive_t *); |
| 627 | void (*set_pio_mode)(struct hwif_s *, ide_drive_t *); |
| 628 | void (*set_dma_mode)(struct hwif_s *, ide_drive_t *); |
| 629 | int (*reset_poll)(ide_drive_t *); |
| 630 | void (*pre_reset)(ide_drive_t *); |
| 631 | void (*resetproc)(ide_drive_t *); |
| 632 | void (*maskproc)(ide_drive_t *, int); |
| 633 | void (*quirkproc)(ide_drive_t *); |
| 634 | void (*clear_irq)(ide_drive_t *); |
| 635 | int (*test_irq)(struct hwif_s *); |
| 636 | |
| 637 | u8 (*mdma_filter)(ide_drive_t *); |
| 638 | u8 (*udma_filter)(ide_drive_t *); |
| 639 | |
| 640 | u8 (*cable_detect)(struct hwif_s *); |
| 641 | }; |
| 642 | |
| 643 | struct ide_dma_ops { |
| 644 | void (*dma_host_set)(struct ide_drive_s *, int); |
| 645 | int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *); |
| 646 | void (*dma_start)(struct ide_drive_s *); |
| 647 | int (*dma_end)(struct ide_drive_s *); |
| 648 | int (*dma_test_irq)(struct ide_drive_s *); |
| 649 | void (*dma_lost_irq)(struct ide_drive_s *); |
| 650 | /* below ones are optional */ |
| 651 | int (*dma_check)(struct ide_drive_s *, struct ide_cmd *); |
| 652 | int (*dma_timer_expiry)(struct ide_drive_s *); |
| 653 | void (*dma_clear)(struct ide_drive_s *); |
| 654 | /* |
| 655 | * The following method is optional and only required to be |
| 656 | * implemented for the SFF-8038i compatible controllers. |
| 657 | */ |
| 658 | u8 (*dma_sff_read_status)(struct hwif_s *); |
| 659 | }; |
| 660 | |
| 661 | enum { |
| 662 | IDE_PFLAG_PROBING = (1 << 0), |
| 663 | }; |
| 664 | |
| 665 | struct ide_host; |
| 666 | |
| 667 | typedef struct hwif_s { |
| 668 | struct hwif_s *mate; /* other hwif from same PCI chip */ |
| 669 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| 670 | |
| 671 | struct ide_host *host; |
| 672 | |
| 673 | char name[6]; /* name of interface, eg. "ide0" */ |
| 674 | |
| 675 | struct ide_io_ports io_ports; |
| 676 | |
| 677 | unsigned long sata_scr[SATA_NR_PORTS]; |
| 678 | |
| 679 | ide_drive_t *devices[MAX_DRIVES + 1]; |
| 680 | |
| 681 | unsigned long port_flags; |
| 682 | |
| 683 | u8 major; /* our major number */ |
| 684 | u8 index; /* 0 for ide0; 1 for ide1; ... */ |
| 685 | u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ |
| 686 | |
| 687 | u32 host_flags; |
| 688 | |
| 689 | u8 pio_mask; |
| 690 | |
| 691 | u8 ultra_mask; |
| 692 | u8 mwdma_mask; |
| 693 | u8 swdma_mask; |
| 694 | |
| 695 | u8 cbl; /* cable type */ |
| 696 | |
| 697 | hwif_chipset_t chipset; /* sub-module for tuning.. */ |
| 698 | |
| 699 | struct device *dev; |
| 700 | |
| 701 | void (*rw_disk)(ide_drive_t *, struct request *); |
| 702 | |
| 703 | const struct ide_tp_ops *tp_ops; |
| 704 | const struct ide_port_ops *port_ops; |
| 705 | const struct ide_dma_ops *dma_ops; |
| 706 | |
| 707 | /* dma physical region descriptor table (cpu view) */ |
| 708 | unsigned int *dmatable_cpu; |
| 709 | /* dma physical region descriptor table (dma view) */ |
| 710 | dma_addr_t dmatable_dma; |
| 711 | |
| 712 | /* maximum number of PRD table entries */ |
| 713 | int prd_max_nents; |
| 714 | /* PRD entry size in bytes */ |
| 715 | int prd_ent_size; |
| 716 | |
| 717 | /* Scatter-gather list used to build the above */ |
| 718 | struct scatterlist *sg_table; |
| 719 | int sg_max_nents; /* Maximum number of entries in it */ |
| 720 | |
| 721 | struct ide_cmd cmd; /* current command */ |
| 722 | |
| 723 | int rqsize; /* max sectors per request */ |
| 724 | int irq; /* our irq number */ |
| 725 | |
| 726 | unsigned long dma_base; /* base addr for dma ports */ |
| 727 | |
| 728 | unsigned long config_data; /* for use by chipset-specific code */ |
| 729 | unsigned long select_data; /* for use by chipset-specific code */ |
| 730 | |
| 731 | unsigned long extra_base; /* extra addr for dma ports */ |
| 732 | unsigned extra_ports; /* number of extra dma ports */ |
| 733 | |
| 734 | unsigned present : 1; /* this interface exists */ |
| 735 | unsigned busy : 1; /* serializes devices on a port */ |
| 736 | |
| 737 | struct device gendev; |
| 738 | struct device *portdev; |
| 739 | |
| 740 | struct completion gendev_rel_comp; /* To deal with device release() */ |
| 741 | |
| 742 | void *hwif_data; /* extra hwif data */ |
| 743 | |
| 744 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 745 | struct ide_acpi_hwif_link *acpidata; |
| 746 | #endif |
| 747 | |
| 748 | /* IRQ handler, if active */ |
| 749 | ide_startstop_t (*handler)(ide_drive_t *); |
| 750 | |
| 751 | /* BOOL: polling active & poll_timeout field valid */ |
| 752 | unsigned int polling : 1; |
| 753 | |
| 754 | /* current drive */ |
| 755 | ide_drive_t *cur_dev; |
| 756 | |
| 757 | /* current request */ |
| 758 | struct request *rq; |
| 759 | |
| 760 | /* failsafe timer */ |
| 761 | struct timer_list timer; |
| 762 | /* timeout value during long polls */ |
| 763 | unsigned long poll_timeout; |
| 764 | /* queried upon timeouts */ |
| 765 | int (*expiry)(ide_drive_t *); |
| 766 | |
| 767 | int req_gen; |
| 768 | int req_gen_timer; |
| 769 | |
| 770 | spinlock_t lock; |
| 771 | } ____cacheline_internodealigned_in_smp ide_hwif_t; |
| 772 | |
| 773 | #define MAX_HOST_PORTS 4 |
| 774 | |
| 775 | struct ide_host { |
| 776 | ide_hwif_t *ports[MAX_HOST_PORTS + 1]; |
| 777 | unsigned int n_ports; |
| 778 | struct device *dev[2]; |
| 779 | |
| 780 | int (*init_chipset)(struct pci_dev *); |
| 781 | |
| 782 | void (*get_lock)(irq_handler_t, void *); |
| 783 | void (*release_lock)(void); |
| 784 | |
| 785 | irq_handler_t irq_handler; |
| 786 | |
| 787 | unsigned long host_flags; |
| 788 | |
| 789 | int irq_flags; |
| 790 | |
| 791 | void *host_priv; |
| 792 | ide_hwif_t *cur_port; /* for hosts requiring serialization */ |
| 793 | |
| 794 | /* used for hosts requiring serialization */ |
| 795 | volatile unsigned long host_busy; |
| 796 | }; |
| 797 | |
| 798 | #define IDE_HOST_BUSY 0 |
| 799 | |
| 800 | /* |
| 801 | * internal ide interrupt handler type |
| 802 | */ |
| 803 | typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
| 804 | typedef int (ide_expiry_t)(ide_drive_t *); |
| 805 | |
| 806 | /* used by ide-cd, ide-floppy, etc. */ |
| 807 | typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned); |
| 808 | |
| 809 | extern struct mutex ide_setting_mtx; |
| 810 | |
| 811 | /* |
| 812 | * configurable drive settings |
| 813 | */ |
| 814 | |
| 815 | #define DS_SYNC (1 << 0) |
| 816 | |
| 817 | struct ide_devset { |
| 818 | int (*get)(ide_drive_t *); |
| 819 | int (*set)(ide_drive_t *, int); |
| 820 | unsigned int flags; |
| 821 | }; |
| 822 | |
| 823 | #define __DEVSET(_flags, _get, _set) { \ |
| 824 | .flags = _flags, \ |
| 825 | .get = _get, \ |
| 826 | .set = _set, \ |
| 827 | } |
| 828 | |
| 829 | #define ide_devset_get(name, field) \ |
| 830 | static int get_##name(ide_drive_t *drive) \ |
| 831 | { \ |
| 832 | return drive->field; \ |
| 833 | } |
| 834 | |
| 835 | #define ide_devset_set(name, field) \ |
| 836 | static int set_##name(ide_drive_t *drive, int arg) \ |
| 837 | { \ |
| 838 | drive->field = arg; \ |
| 839 | return 0; \ |
| 840 | } |
| 841 | |
| 842 | #define ide_devset_get_flag(name, flag) \ |
| 843 | static int get_##name(ide_drive_t *drive) \ |
| 844 | { \ |
| 845 | return !!(drive->dev_flags & flag); \ |
| 846 | } |
| 847 | |
| 848 | #define ide_devset_set_flag(name, flag) \ |
| 849 | static int set_##name(ide_drive_t *drive, int arg) \ |
| 850 | { \ |
| 851 | if (arg) \ |
| 852 | drive->dev_flags |= flag; \ |
| 853 | else \ |
| 854 | drive->dev_flags &= ~flag; \ |
| 855 | return 0; \ |
| 856 | } |
| 857 | |
| 858 | #define __IDE_DEVSET(_name, _flags, _get, _set) \ |
| 859 | const struct ide_devset ide_devset_##_name = \ |
| 860 | __DEVSET(_flags, _get, _set) |
| 861 | |
| 862 | #define IDE_DEVSET(_name, _flags, _get, _set) \ |
| 863 | static __IDE_DEVSET(_name, _flags, _get, _set) |
| 864 | |
| 865 | #define ide_devset_rw(_name, _func) \ |
| 866 | IDE_DEVSET(_name, 0, get_##_func, set_##_func) |
| 867 | |
| 868 | #define ide_devset_w(_name, _func) \ |
| 869 | IDE_DEVSET(_name, 0, NULL, set_##_func) |
| 870 | |
| 871 | #define ide_ext_devset_rw(_name, _func) \ |
| 872 | __IDE_DEVSET(_name, 0, get_##_func, set_##_func) |
| 873 | |
| 874 | #define ide_ext_devset_rw_sync(_name, _func) \ |
| 875 | __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) |
| 876 | |
| 877 | #define ide_decl_devset(_name) \ |
| 878 | extern const struct ide_devset ide_devset_##_name |
| 879 | |
| 880 | ide_decl_devset(io_32bit); |
| 881 | ide_decl_devset(keepsettings); |
| 882 | ide_decl_devset(pio_mode); |
| 883 | ide_decl_devset(unmaskirq); |
| 884 | ide_decl_devset(using_dma); |
| 885 | |
| 886 | #ifdef CONFIG_IDE_PROC_FS |
| 887 | /* |
| 888 | * /proc/ide interface |
| 889 | */ |
| 890 | |
| 891 | #define ide_devset_rw_field(_name, _field) \ |
| 892 | ide_devset_get(_name, _field); \ |
| 893 | ide_devset_set(_name, _field); \ |
| 894 | IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
| 895 | |
| 896 | #define ide_devset_rw_flag(_name, _field) \ |
| 897 | ide_devset_get_flag(_name, _field); \ |
| 898 | ide_devset_set_flag(_name, _field); \ |
| 899 | IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
| 900 | |
| 901 | struct ide_proc_devset { |
| 902 | const char *name; |
| 903 | const struct ide_devset *setting; |
| 904 | int min, max; |
| 905 | int (*mulf)(ide_drive_t *); |
| 906 | int (*divf)(ide_drive_t *); |
| 907 | }; |
| 908 | |
| 909 | #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \ |
| 910 | .name = __stringify(_name), \ |
| 911 | .setting = &ide_devset_##_name, \ |
| 912 | .min = _min, \ |
| 913 | .max = _max, \ |
| 914 | .mulf = _mulf, \ |
| 915 | .divf = _divf, \ |
| 916 | } |
| 917 | |
| 918 | #define IDE_PROC_DEVSET(_name, _min, _max) \ |
| 919 | __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL) |
| 920 | |
| 921 | typedef struct { |
| 922 | const char *name; |
| 923 | umode_t mode; |
| 924 | const struct file_operations *proc_fops; |
| 925 | } ide_proc_entry_t; |
| 926 | |
| 927 | void proc_ide_create(void); |
| 928 | void proc_ide_destroy(void); |
| 929 | void ide_proc_register_port(ide_hwif_t *); |
| 930 | void ide_proc_port_register_devices(ide_hwif_t *); |
| 931 | void ide_proc_unregister_device(ide_drive_t *); |
| 932 | void ide_proc_unregister_port(ide_hwif_t *); |
| 933 | void ide_proc_register_driver(ide_drive_t *, struct ide_driver *); |
| 934 | void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *); |
| 935 | |
| 936 | extern const struct file_operations ide_capacity_proc_fops; |
| 937 | extern const struct file_operations ide_geometry_proc_fops; |
| 938 | #else |
| 939 | static inline void proc_ide_create(void) { ; } |
| 940 | static inline void proc_ide_destroy(void) { ; } |
| 941 | static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } |
| 942 | static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } |
| 943 | static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } |
| 944 | static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } |
| 945 | static inline void ide_proc_register_driver(ide_drive_t *drive, |
| 946 | struct ide_driver *driver) { ; } |
| 947 | static inline void ide_proc_unregister_driver(ide_drive_t *drive, |
| 948 | struct ide_driver *driver) { ; } |
| 949 | #endif |
| 950 | |
| 951 | enum { |
| 952 | /* enter/exit functions */ |
| 953 | IDE_DBG_FUNC = (1 << 0), |
| 954 | /* sense key/asc handling */ |
| 955 | IDE_DBG_SENSE = (1 << 1), |
| 956 | /* packet commands handling */ |
| 957 | IDE_DBG_PC = (1 << 2), |
| 958 | /* request handling */ |
| 959 | IDE_DBG_RQ = (1 << 3), |
| 960 | /* driver probing/setup */ |
| 961 | IDE_DBG_PROBE = (1 << 4), |
| 962 | }; |
| 963 | |
| 964 | /* DRV_NAME has to be defined in the driver before using the macro below */ |
| 965 | #define __ide_debug_log(lvl, fmt, args...) \ |
| 966 | { \ |
| 967 | if (unlikely(drive->debug_mask & lvl)) \ |
| 968 | printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \ |
| 969 | __func__, ## args); \ |
| 970 | } |
| 971 | |
| 972 | /* |
| 973 | * Power Management state machine (rq->pm->pm_step). |
| 974 | * |
| 975 | * For each step, the core calls ide_start_power_step() first. |
| 976 | * This can return: |
| 977 | * - ide_stopped : In this case, the core calls us back again unless |
| 978 | * step have been set to ide_power_state_completed. |
| 979 | * - ide_started : In this case, the channel is left busy until an |
| 980 | * async event (interrupt) occurs. |
| 981 | * Typically, ide_start_power_step() will issue a taskfile request with |
| 982 | * do_rw_taskfile(). |
| 983 | * |
| 984 | * Upon reception of the interrupt, the core will call ide_complete_power_step() |
| 985 | * with the error code if any. This routine should update the step value |
| 986 | * and return. It should not start a new request. The core will call |
| 987 | * ide_start_power_step() for the new step value, unless step have been |
| 988 | * set to IDE_PM_COMPLETED. |
| 989 | */ |
| 990 | enum { |
| 991 | IDE_PM_START_SUSPEND, |
| 992 | IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND, |
| 993 | IDE_PM_STANDBY, |
| 994 | |
| 995 | IDE_PM_START_RESUME, |
| 996 | IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME, |
| 997 | IDE_PM_IDLE, |
| 998 | IDE_PM_RESTORE_DMA, |
| 999 | |
| 1000 | IDE_PM_COMPLETED, |
| 1001 | }; |
| 1002 | |
| 1003 | int generic_ide_suspend(struct device *, pm_message_t); |
| 1004 | int generic_ide_resume(struct device *); |
| 1005 | |
| 1006 | void ide_complete_power_step(ide_drive_t *, struct request *); |
| 1007 | ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *); |
| 1008 | void ide_complete_pm_rq(ide_drive_t *, struct request *); |
| 1009 | void ide_check_pm_state(ide_drive_t *, struct request *); |
| 1010 | |
| 1011 | /* |
| 1012 | * Subdrivers support. |
| 1013 | * |
| 1014 | * The gendriver.owner field should be set to the module owner of this driver. |
| 1015 | * The gendriver.name field should be set to the name of this driver |
| 1016 | */ |
| 1017 | struct ide_driver { |
| 1018 | const char *version; |
| 1019 | ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); |
| 1020 | struct device_driver gen_driver; |
| 1021 | int (*probe)(ide_drive_t *); |
| 1022 | void (*remove)(ide_drive_t *); |
| 1023 | void (*resume)(ide_drive_t *); |
| 1024 | void (*shutdown)(ide_drive_t *); |
| 1025 | #ifdef CONFIG_IDE_PROC_FS |
| 1026 | ide_proc_entry_t * (*proc_entries)(ide_drive_t *); |
| 1027 | const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *); |
| 1028 | #endif |
| 1029 | }; |
| 1030 | |
| 1031 | #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver) |
| 1032 | |
| 1033 | int ide_device_get(ide_drive_t *); |
| 1034 | void ide_device_put(ide_drive_t *); |
| 1035 | |
| 1036 | struct ide_ioctl_devset { |
| 1037 | unsigned int get_ioctl; |
| 1038 | unsigned int set_ioctl; |
| 1039 | const struct ide_devset *setting; |
| 1040 | }; |
| 1041 | |
| 1042 | int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, |
| 1043 | unsigned long, const struct ide_ioctl_devset *); |
| 1044 | |
| 1045 | int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long); |
| 1046 | |
| 1047 | extern int ide_vlb_clk; |
| 1048 | extern int ide_pci_clk; |
| 1049 | |
| 1050 | int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int); |
| 1051 | void ide_kill_rq(ide_drive_t *, struct request *); |
| 1052 | |
| 1053 | void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); |
| 1054 | void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); |
| 1055 | |
| 1056 | void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *, |
| 1057 | unsigned int); |
| 1058 | |
| 1059 | void ide_pad_transfer(ide_drive_t *, int, int); |
| 1060 | |
| 1061 | ide_startstop_t ide_error(ide_drive_t *, const char *, u8); |
| 1062 | |
| 1063 | void ide_fix_driveid(u16 *); |
| 1064 | |
| 1065 | extern void ide_fixstring(u8 *, const int, const int); |
| 1066 | |
| 1067 | int ide_busy_sleep(ide_drive_t *, unsigned long, int); |
| 1068 | |
| 1069 | int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *); |
| 1070 | int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
| 1071 | |
| 1072 | ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *); |
| 1073 | ide_startstop_t ide_do_devset(ide_drive_t *, struct request *); |
| 1074 | |
| 1075 | extern ide_startstop_t ide_do_reset (ide_drive_t *); |
| 1076 | |
| 1077 | extern int ide_devset_execute(ide_drive_t *drive, |
| 1078 | const struct ide_devset *setting, int arg); |
| 1079 | |
| 1080 | void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8); |
| 1081 | int ide_complete_rq(ide_drive_t *, int, unsigned int); |
| 1082 | |
| 1083 | void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd); |
| 1084 | void ide_tf_dump(const char *, struct ide_cmd *); |
| 1085 | |
| 1086 | void ide_exec_command(ide_hwif_t *, u8); |
| 1087 | u8 ide_read_status(ide_hwif_t *); |
| 1088 | u8 ide_read_altstatus(ide_hwif_t *); |
| 1089 | void ide_write_devctl(ide_hwif_t *, u8); |
| 1090 | |
| 1091 | void ide_dev_select(ide_drive_t *); |
| 1092 | void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8); |
| 1093 | void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8); |
| 1094 | |
| 1095 | void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); |
| 1096 | void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); |
| 1097 | |
| 1098 | void SELECT_MASK(ide_drive_t *, int); |
| 1099 | |
| 1100 | u8 ide_read_error(ide_drive_t *); |
| 1101 | void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); |
| 1102 | |
| 1103 | int ide_check_ireason(ide_drive_t *, struct request *, int, int, int); |
| 1104 | |
| 1105 | int ide_check_atapi_device(ide_drive_t *, const char *); |
| 1106 | |
| 1107 | void ide_init_pc(struct ide_atapi_pc *); |
| 1108 | |
| 1109 | /* Disk head parking */ |
| 1110 | extern wait_queue_head_t ide_park_wq; |
| 1111 | ssize_t ide_park_show(struct device *dev, struct device_attribute *attr, |
| 1112 | char *buf); |
| 1113 | ssize_t ide_park_store(struct device *dev, struct device_attribute *attr, |
| 1114 | const char *buf, size_t len); |
| 1115 | |
| 1116 | /* |
| 1117 | * Special requests for ide-tape block device strategy routine. |
| 1118 | * |
| 1119 | * In order to service a character device command, we add special requests to |
| 1120 | * the tail of our block device request queue and wait for their completion. |
| 1121 | */ |
| 1122 | enum { |
| 1123 | REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ |
| 1124 | REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ |
| 1125 | REQ_IDETAPE_READ = (1 << 2), |
| 1126 | REQ_IDETAPE_WRITE = (1 << 3), |
| 1127 | }; |
| 1128 | |
| 1129 | int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, |
| 1130 | void *, unsigned int); |
| 1131 | |
| 1132 | int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); |
| 1133 | int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); |
| 1134 | int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); |
| 1135 | void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); |
| 1136 | void ide_retry_pc(ide_drive_t *drive); |
| 1137 | |
| 1138 | void ide_prep_sense(ide_drive_t *drive, struct request *rq); |
| 1139 | int ide_queue_sense_rq(ide_drive_t *drive, void *special); |
| 1140 | |
| 1141 | int ide_cd_expiry(ide_drive_t *); |
| 1142 | |
| 1143 | int ide_cd_get_xferlen(struct request *); |
| 1144 | |
| 1145 | ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *); |
| 1146 | |
| 1147 | ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *); |
| 1148 | |
| 1149 | void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int); |
| 1150 | |
| 1151 | void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8); |
| 1152 | |
| 1153 | int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16); |
| 1154 | int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *); |
| 1155 | |
| 1156 | int ide_taskfile_ioctl(ide_drive_t *, unsigned long); |
| 1157 | |
| 1158 | int ide_dev_read_id(ide_drive_t *, u8, u16 *, int); |
| 1159 | |
| 1160 | extern int ide_driveid_update(ide_drive_t *); |
| 1161 | extern int ide_config_drive_speed(ide_drive_t *, u8); |
| 1162 | extern u8 eighty_ninty_three (ide_drive_t *); |
| 1163 | extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
| 1164 | |
| 1165 | extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); |
| 1166 | |
| 1167 | extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
| 1168 | |
| 1169 | extern void ide_timer_expiry(unsigned long); |
| 1170 | extern irqreturn_t ide_intr(int irq, void *dev_id); |
| 1171 | extern void do_ide_request(struct request_queue *); |
| 1172 | extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq); |
| 1173 | |
| 1174 | void ide_init_disk(struct gendisk *, ide_drive_t *); |
| 1175 | |
| 1176 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
| 1177 | extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); |
| 1178 | #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) |
| 1179 | #else |
| 1180 | #define ide_pci_register_driver(d) pci_register_driver(d) |
| 1181 | #endif |
| 1182 | |
| 1183 | static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev) |
| 1184 | { |
| 1185 | if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) |
| 1186 | return 1; |
| 1187 | return 0; |
| 1188 | } |
| 1189 | |
| 1190 | void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, |
| 1191 | struct ide_hw *, struct ide_hw **); |
| 1192 | void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); |
| 1193 | |
| 1194 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
| 1195 | int ide_pci_set_master(struct pci_dev *, const char *); |
| 1196 | unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); |
| 1197 | int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); |
| 1198 | int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); |
| 1199 | #else |
| 1200 | static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, |
| 1201 | const struct ide_port_info *d) |
| 1202 | { |
| 1203 | return -EINVAL; |
| 1204 | } |
| 1205 | #endif |
| 1206 | |
| 1207 | struct ide_pci_enablebit { |
| 1208 | u8 reg; /* byte pci reg holding the enable-bit */ |
| 1209 | u8 mask; /* mask to isolate the enable-bit */ |
| 1210 | u8 val; /* value of masked reg when "enabled" */ |
| 1211 | }; |
| 1212 | |
| 1213 | enum { |
| 1214 | /* Uses ISA control ports not PCI ones. */ |
| 1215 | IDE_HFLAG_ISA_PORTS = (1 << 0), |
| 1216 | /* single port device */ |
| 1217 | IDE_HFLAG_SINGLE = (1 << 1), |
| 1218 | /* don't use legacy PIO blacklist */ |
| 1219 | IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), |
| 1220 | /* set for the second port of QD65xx */ |
| 1221 | IDE_HFLAG_QD_2ND_PORT = (1 << 3), |
| 1222 | /* use PIO8/9 for prefetch off/on */ |
| 1223 | IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), |
| 1224 | /* use PIO6/7 for fast-devsel off/on */ |
| 1225 | IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), |
| 1226 | /* use 100-102 and 200-202 PIO values to set DMA modes */ |
| 1227 | IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), |
| 1228 | /* |
| 1229 | * keep DMA setting when programming PIO mode, may be used only |
| 1230 | * for hosts which have separate PIO and DMA timings (ie. PMAC) |
| 1231 | */ |
| 1232 | IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), |
| 1233 | /* program host for the transfer mode after programming device */ |
| 1234 | IDE_HFLAG_POST_SET_MODE = (1 << 8), |
| 1235 | /* don't program host/device for the transfer mode ("smart" hosts) */ |
| 1236 | IDE_HFLAG_NO_SET_MODE = (1 << 9), |
| 1237 | /* trust BIOS for programming chipset/device for DMA */ |
| 1238 | IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), |
| 1239 | /* host is CS5510/CS5520 */ |
| 1240 | IDE_HFLAG_CS5520 = (1 << 11), |
| 1241 | /* ATAPI DMA is unsupported */ |
| 1242 | IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), |
| 1243 | /* set if host is a "non-bootable" controller */ |
| 1244 | IDE_HFLAG_NON_BOOTABLE = (1 << 13), |
| 1245 | /* host doesn't support DMA */ |
| 1246 | IDE_HFLAG_NO_DMA = (1 << 14), |
| 1247 | /* check if host is PCI IDE device before allowing DMA */ |
| 1248 | IDE_HFLAG_NO_AUTODMA = (1 << 15), |
| 1249 | /* host uses MMIO */ |
| 1250 | IDE_HFLAG_MMIO = (1 << 16), |
| 1251 | /* no LBA48 */ |
| 1252 | IDE_HFLAG_NO_LBA48 = (1 << 17), |
| 1253 | /* no LBA48 DMA */ |
| 1254 | IDE_HFLAG_NO_LBA48_DMA = (1 << 18), |
| 1255 | /* data FIFO is cleared by an error */ |
| 1256 | IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), |
| 1257 | /* serialize ports */ |
| 1258 | IDE_HFLAG_SERIALIZE = (1 << 20), |
| 1259 | /* host is DTC2278 */ |
| 1260 | IDE_HFLAG_DTC2278 = (1 << 21), |
| 1261 | /* 4 devices on a single set of I/O ports */ |
| 1262 | IDE_HFLAG_4DRIVES = (1 << 22), |
| 1263 | /* host is TRM290 */ |
| 1264 | IDE_HFLAG_TRM290 = (1 << 23), |
| 1265 | /* use 32-bit I/O ops */ |
| 1266 | IDE_HFLAG_IO_32BIT = (1 << 24), |
| 1267 | /* unmask IRQs */ |
| 1268 | IDE_HFLAG_UNMASK_IRQS = (1 << 25), |
| 1269 | IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26), |
| 1270 | /* serialize ports if DMA is possible (for sl82c105) */ |
| 1271 | IDE_HFLAG_SERIALIZE_DMA = (1 << 27), |
| 1272 | /* force host out of "simplex" mode */ |
| 1273 | IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), |
| 1274 | /* DSC overlap is unsupported */ |
| 1275 | IDE_HFLAG_NO_DSC = (1 << 29), |
| 1276 | /* never use 32-bit I/O ops */ |
| 1277 | IDE_HFLAG_NO_IO_32BIT = (1 << 30), |
| 1278 | /* never unmask IRQs */ |
| 1279 | IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), |
| 1280 | }; |
| 1281 | |
| 1282 | #ifdef CONFIG_BLK_DEV_OFFBOARD |
| 1283 | # define IDE_HFLAG_OFF_BOARD 0 |
| 1284 | #else |
| 1285 | # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE |
| 1286 | #endif |
| 1287 | |
| 1288 | struct ide_port_info { |
| 1289 | char *name; |
| 1290 | |
| 1291 | int (*init_chipset)(struct pci_dev *); |
| 1292 | |
| 1293 | void (*get_lock)(irq_handler_t, void *); |
| 1294 | void (*release_lock)(void); |
| 1295 | |
| 1296 | void (*init_iops)(ide_hwif_t *); |
| 1297 | void (*init_hwif)(ide_hwif_t *); |
| 1298 | int (*init_dma)(ide_hwif_t *, |
| 1299 | const struct ide_port_info *); |
| 1300 | |
| 1301 | const struct ide_tp_ops *tp_ops; |
| 1302 | const struct ide_port_ops *port_ops; |
| 1303 | const struct ide_dma_ops *dma_ops; |
| 1304 | |
| 1305 | struct ide_pci_enablebit enablebits[2]; |
| 1306 | |
| 1307 | hwif_chipset_t chipset; |
| 1308 | |
| 1309 | u16 max_sectors; /* if < than the default one */ |
| 1310 | |
| 1311 | u32 host_flags; |
| 1312 | |
| 1313 | int irq_flags; |
| 1314 | |
| 1315 | u8 pio_mask; |
| 1316 | u8 swdma_mask; |
| 1317 | u8 mwdma_mask; |
| 1318 | u8 udma_mask; |
| 1319 | }; |
| 1320 | |
| 1321 | int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); |
| 1322 | int ide_pci_init_two(struct pci_dev *, struct pci_dev *, |
| 1323 | const struct ide_port_info *, void *); |
| 1324 | void ide_pci_remove(struct pci_dev *); |
| 1325 | |
| 1326 | #ifdef CONFIG_PM |
| 1327 | int ide_pci_suspend(struct pci_dev *, pm_message_t); |
| 1328 | int ide_pci_resume(struct pci_dev *); |
| 1329 | #else |
| 1330 | #define ide_pci_suspend NULL |
| 1331 | #define ide_pci_resume NULL |
| 1332 | #endif |
| 1333 | |
| 1334 | void ide_map_sg(ide_drive_t *, struct ide_cmd *); |
| 1335 | void ide_init_sg_cmd(struct ide_cmd *, unsigned int); |
| 1336 | |
| 1337 | #define BAD_DMA_DRIVE 0 |
| 1338 | #define GOOD_DMA_DRIVE 1 |
| 1339 | |
| 1340 | struct drive_list_entry { |
| 1341 | const char *id_model; |
| 1342 | const char *id_firmware; |
| 1343 | }; |
| 1344 | |
| 1345 | int ide_in_drive_list(u16 *, const struct drive_list_entry *); |
| 1346 | |
| 1347 | #ifdef CONFIG_BLK_DEV_IDEDMA |
| 1348 | int ide_dma_good_drive(ide_drive_t *); |
| 1349 | int __ide_dma_bad_drive(ide_drive_t *); |
| 1350 | |
| 1351 | u8 ide_find_dma_mode(ide_drive_t *, u8); |
| 1352 | |
| 1353 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) |
| 1354 | { |
| 1355 | return ide_find_dma_mode(drive, XFER_UDMA_6); |
| 1356 | } |
| 1357 | |
| 1358 | void ide_dma_off_quietly(ide_drive_t *); |
| 1359 | void ide_dma_off(ide_drive_t *); |
| 1360 | void ide_dma_on(ide_drive_t *); |
| 1361 | int ide_set_dma(ide_drive_t *); |
| 1362 | void ide_check_dma_crc(ide_drive_t *); |
| 1363 | ide_startstop_t ide_dma_intr(ide_drive_t *); |
| 1364 | |
| 1365 | int ide_allocate_dma_engine(ide_hwif_t *); |
| 1366 | void ide_release_dma_engine(ide_hwif_t *); |
| 1367 | |
| 1368 | int ide_dma_prepare(ide_drive_t *, struct ide_cmd *); |
| 1369 | void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *); |
| 1370 | |
| 1371 | #ifdef CONFIG_BLK_DEV_IDEDMA_SFF |
| 1372 | int config_drive_for_dma(ide_drive_t *); |
| 1373 | int ide_build_dmatable(ide_drive_t *, struct ide_cmd *); |
| 1374 | void ide_dma_host_set(ide_drive_t *, int); |
| 1375 | int ide_dma_setup(ide_drive_t *, struct ide_cmd *); |
| 1376 | extern void ide_dma_start(ide_drive_t *); |
| 1377 | int ide_dma_end(ide_drive_t *); |
| 1378 | int ide_dma_test_irq(ide_drive_t *); |
| 1379 | int ide_dma_sff_timer_expiry(ide_drive_t *); |
| 1380 | u8 ide_dma_sff_read_status(ide_hwif_t *); |
| 1381 | extern const struct ide_dma_ops sff_dma_ops; |
| 1382 | #else |
| 1383 | static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; } |
| 1384 | #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ |
| 1385 | |
| 1386 | void ide_dma_lost_irq(ide_drive_t *); |
| 1387 | ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int); |
| 1388 | |
| 1389 | #else |
| 1390 | static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } |
| 1391 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } |
| 1392 | static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } |
| 1393 | static inline void ide_dma_off(ide_drive_t *drive) { ; } |
| 1394 | static inline void ide_dma_on(ide_drive_t *drive) { ; } |
| 1395 | static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
| 1396 | static inline int ide_set_dma(ide_drive_t *drive) { return 1; } |
| 1397 | static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } |
| 1398 | static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; } |
| 1399 | static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; } |
| 1400 | static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } |
| 1401 | static inline int ide_dma_prepare(ide_drive_t *drive, |
| 1402 | struct ide_cmd *cmd) { return 1; } |
| 1403 | static inline void ide_dma_unmap_sg(ide_drive_t *drive, |
| 1404 | struct ide_cmd *cmd) { ; } |
| 1405 | #endif /* CONFIG_BLK_DEV_IDEDMA */ |
| 1406 | |
| 1407 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 1408 | int ide_acpi_init(void); |
| 1409 | bool ide_port_acpi(ide_hwif_t *hwif); |
| 1410 | extern int ide_acpi_exec_tfs(ide_drive_t *drive); |
| 1411 | extern void ide_acpi_get_timing(ide_hwif_t *hwif); |
| 1412 | extern void ide_acpi_push_timing(ide_hwif_t *hwif); |
| 1413 | void ide_acpi_init_port(ide_hwif_t *); |
| 1414 | void ide_acpi_port_init_devices(ide_hwif_t *); |
| 1415 | extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); |
| 1416 | #else |
| 1417 | static inline int ide_acpi_init(void) { return 0; } |
| 1418 | static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; } |
| 1419 | static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } |
| 1420 | static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } |
| 1421 | static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } |
| 1422 | static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; } |
| 1423 | static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } |
| 1424 | static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} |
| 1425 | #endif |
| 1426 | |
| 1427 | void ide_register_region(struct gendisk *); |
| 1428 | void ide_unregister_region(struct gendisk *); |
| 1429 | |
| 1430 | void ide_check_nien_quirk_list(ide_drive_t *); |
| 1431 | void ide_undecoded_slave(ide_drive_t *); |
| 1432 | |
| 1433 | void ide_port_apply_params(ide_hwif_t *); |
| 1434 | int ide_sysfs_register_port(ide_hwif_t *); |
| 1435 | |
| 1436 | struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **, |
| 1437 | unsigned int); |
| 1438 | void ide_host_free(struct ide_host *); |
| 1439 | int ide_host_register(struct ide_host *, const struct ide_port_info *, |
| 1440 | struct ide_hw **); |
| 1441 | int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int, |
| 1442 | struct ide_host **); |
| 1443 | void ide_host_remove(struct ide_host *); |
| 1444 | int ide_legacy_device_add(const struct ide_port_info *, unsigned long); |
| 1445 | void ide_port_unregister_devices(ide_hwif_t *); |
| 1446 | void ide_port_scan(ide_hwif_t *); |
| 1447 | |
| 1448 | static inline void *ide_get_hwifdata (ide_hwif_t * hwif) |
| 1449 | { |
| 1450 | return hwif->hwif_data; |
| 1451 | } |
| 1452 | |
| 1453 | static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) |
| 1454 | { |
| 1455 | hwif->hwif_data = data; |
| 1456 | } |
| 1457 | |
| 1458 | extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
| 1459 | |
| 1460 | u64 ide_get_lba_addr(struct ide_cmd *, int); |
| 1461 | u8 ide_dump_status(ide_drive_t *, const char *, u8); |
| 1462 | |
| 1463 | struct ide_timing { |
| 1464 | u8 mode; |
| 1465 | u8 setup; /* t1 */ |
| 1466 | u16 act8b; /* t2 for 8-bit io */ |
| 1467 | u16 rec8b; /* t2i for 8-bit io */ |
| 1468 | u16 cyc8b; /* t0 for 8-bit io */ |
| 1469 | u16 active; /* t2 or tD */ |
| 1470 | u16 recover; /* t2i or tK */ |
| 1471 | u16 cycle; /* t0 */ |
| 1472 | u16 udma; /* t2CYCTYP/2 */ |
| 1473 | }; |
| 1474 | |
| 1475 | enum { |
| 1476 | IDE_TIMING_SETUP = (1 << 0), |
| 1477 | IDE_TIMING_ACT8B = (1 << 1), |
| 1478 | IDE_TIMING_REC8B = (1 << 2), |
| 1479 | IDE_TIMING_CYC8B = (1 << 3), |
| 1480 | IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | |
| 1481 | IDE_TIMING_CYC8B, |
| 1482 | IDE_TIMING_ACTIVE = (1 << 4), |
| 1483 | IDE_TIMING_RECOVER = (1 << 5), |
| 1484 | IDE_TIMING_CYCLE = (1 << 6), |
| 1485 | IDE_TIMING_UDMA = (1 << 7), |
| 1486 | IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | |
| 1487 | IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | |
| 1488 | IDE_TIMING_CYCLE | IDE_TIMING_UDMA, |
| 1489 | }; |
| 1490 | |
| 1491 | struct ide_timing *ide_timing_find_mode(u8); |
| 1492 | u16 ide_pio_cycle_time(ide_drive_t *, u8); |
| 1493 | void ide_timing_merge(struct ide_timing *, struct ide_timing *, |
| 1494 | struct ide_timing *, unsigned int); |
| 1495 | int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); |
| 1496 | |
| 1497 | #ifdef CONFIG_IDE_XFER_MODE |
| 1498 | int ide_scan_pio_blacklist(char *); |
| 1499 | const char *ide_xfer_verbose(u8); |
| 1500 | int ide_pio_need_iordy(ide_drive_t *, const u8); |
| 1501 | int ide_set_pio_mode(ide_drive_t *, u8); |
| 1502 | int ide_set_dma_mode(ide_drive_t *, u8); |
| 1503 | void ide_set_pio(ide_drive_t *, u8); |
| 1504 | int ide_set_xfer_rate(ide_drive_t *, u8); |
| 1505 | #else |
| 1506 | static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; } |
| 1507 | static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; } |
| 1508 | #endif |
| 1509 | |
| 1510 | static inline void ide_set_max_pio(ide_drive_t *drive) |
| 1511 | { |
| 1512 | ide_set_pio(drive, 255); |
| 1513 | } |
| 1514 | |
| 1515 | char *ide_media_string(ide_drive_t *); |
| 1516 | |
| 1517 | extern struct device_attribute ide_dev_attrs[]; |
| 1518 | extern struct bus_type ide_bus_type; |
| 1519 | extern struct class *ide_port_class; |
| 1520 | |
| 1521 | static inline void ide_dump_identify(u8 *id) |
| 1522 | { |
| 1523 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); |
| 1524 | } |
| 1525 | |
| 1526 | static inline int hwif_to_node(ide_hwif_t *hwif) |
| 1527 | { |
| 1528 | return hwif->dev ? dev_to_node(hwif->dev) : -1; |
| 1529 | } |
| 1530 | |
| 1531 | static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) |
| 1532 | { |
| 1533 | ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1]; |
| 1534 | |
| 1535 | return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; |
| 1536 | } |
| 1537 | |
| 1538 | static inline void *ide_get_drivedata(ide_drive_t *drive) |
| 1539 | { |
| 1540 | return drive->drive_data; |
| 1541 | } |
| 1542 | |
| 1543 | static inline void ide_set_drivedata(ide_drive_t *drive, void *data) |
| 1544 | { |
| 1545 | drive->drive_data = data; |
| 1546 | } |
| 1547 | |
| 1548 | #define ide_port_for_each_dev(i, dev, port) \ |
| 1549 | for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) |
| 1550 | |
| 1551 | #define ide_port_for_each_present_dev(i, dev, port) \ |
| 1552 | for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \ |
| 1553 | if ((dev)->dev_flags & IDE_DFLAG_PRESENT) |
| 1554 | |
| 1555 | #define ide_host_for_each_port(i, port, host) \ |
| 1556 | for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++) |
| 1557 | |
| 1558 | #endif /* _IDE_H */ |