Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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/config.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/ioport.h> |
| 12 | #include <linux/hdreg.h> |
| 13 | #include <linux/hdsmart.h> |
| 14 | #include <linux/blkdev.h> |
| 15 | #include <linux/proc_fs.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/bitops.h> |
| 18 | #include <linux/bio.h> |
| 19 | #include <linux/device.h> |
| 20 | #include <linux/pci.h> |
| 21 | #include <asm/byteorder.h> |
| 22 | #include <asm/system.h> |
| 23 | #include <asm/io.h> |
| 24 | #include <asm/semaphore.h> |
| 25 | |
| 26 | /* |
| 27 | * This is the multiple IDE interface driver, as evolved from hd.c. |
| 28 | * It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15). |
| 29 | * There can be up to two drives per interface, as per the ATA-2 spec. |
| 30 | * |
| 31 | * Primary i/f: ide0: major=3; (hda) minor=0; (hdb) minor=64 |
| 32 | * Secondary i/f: ide1: major=22; (hdc or hd1a) minor=0; (hdd or hd1b) minor=64 |
| 33 | * Tertiary i/f: ide2: major=33; (hde) minor=0; (hdf) minor=64 |
| 34 | * Quaternary i/f: ide3: major=34; (hdg) minor=0; (hdh) minor=64 |
| 35 | */ |
| 36 | |
| 37 | /****************************************************************************** |
| 38 | * IDE driver configuration options (play with these as desired): |
| 39 | * |
| 40 | * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary |
| 41 | */ |
| 42 | #define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */ |
| 43 | |
| 44 | #ifndef SUPPORT_SLOW_DATA_PORTS /* 1 to support slow data ports */ |
| 45 | #define SUPPORT_SLOW_DATA_PORTS 1 /* 0 to reduce kernel size */ |
| 46 | #endif |
| 47 | #ifndef SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */ |
| 48 | #define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */ |
| 49 | #endif |
| 50 | #ifndef OK_TO_RESET_CONTROLLER /* 1 needed for good error recovery */ |
| 51 | #define OK_TO_RESET_CONTROLLER 1 /* 0 for use with AH2372A/B interface */ |
| 52 | #endif |
| 53 | |
| 54 | #ifndef DISABLE_IRQ_NOSYNC |
| 55 | #define DISABLE_IRQ_NOSYNC 0 |
| 56 | #endif |
| 57 | |
| 58 | /* |
| 59 | * Used to indicate "no IRQ", should be a value that cannot be an IRQ |
| 60 | * number. |
| 61 | */ |
| 62 | |
| 63 | #define IDE_NO_IRQ (-1) |
| 64 | |
| 65 | /* |
| 66 | * "No user-serviceable parts" beyond this point :) |
| 67 | *****************************************************************************/ |
| 68 | |
| 69 | typedef unsigned char byte; /* used everywhere */ |
| 70 | |
| 71 | /* |
| 72 | * Probably not wise to fiddle with these |
| 73 | */ |
| 74 | #define ERROR_MAX 8 /* Max read/write errors per sector */ |
| 75 | #define ERROR_RESET 3 /* Reset controller every 4th retry */ |
| 76 | #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ |
| 77 | |
| 78 | /* |
| 79 | * Tune flags |
| 80 | */ |
| 81 | #define IDE_TUNE_NOAUTO 2 |
| 82 | #define IDE_TUNE_AUTO 1 |
| 83 | #define IDE_TUNE_DEFAULT 0 |
| 84 | |
| 85 | /* |
| 86 | * state flags |
| 87 | */ |
| 88 | |
| 89 | #define DMA_PIO_RETRY 1 /* retrying in PIO */ |
| 90 | |
| 91 | #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif)) |
| 92 | #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) |
| 93 | |
| 94 | /* |
| 95 | * Definitions for accessing IDE controller registers |
| 96 | */ |
| 97 | #define IDE_NR_PORTS (10) |
| 98 | |
| 99 | #define IDE_DATA_OFFSET (0) |
| 100 | #define IDE_ERROR_OFFSET (1) |
| 101 | #define IDE_NSECTOR_OFFSET (2) |
| 102 | #define IDE_SECTOR_OFFSET (3) |
| 103 | #define IDE_LCYL_OFFSET (4) |
| 104 | #define IDE_HCYL_OFFSET (5) |
| 105 | #define IDE_SELECT_OFFSET (6) |
| 106 | #define IDE_STATUS_OFFSET (7) |
| 107 | #define IDE_CONTROL_OFFSET (8) |
| 108 | #define IDE_IRQ_OFFSET (9) |
| 109 | |
| 110 | #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET |
| 111 | #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET |
| 112 | |
| 113 | #define IDE_CONTROL_OFFSET_HOB (7) |
| 114 | |
| 115 | #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET]) |
| 116 | #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET]) |
| 117 | #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET]) |
| 118 | #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET]) |
| 119 | #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET]) |
| 120 | #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET]) |
| 121 | #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET]) |
| 122 | #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET]) |
| 123 | #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET]) |
| 124 | #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET]) |
| 125 | |
| 126 | #define IDE_FEATURE_REG IDE_ERROR_REG |
| 127 | #define IDE_COMMAND_REG IDE_STATUS_REG |
| 128 | #define IDE_ALTSTATUS_REG IDE_CONTROL_REG |
| 129 | #define IDE_IREASON_REG IDE_NSECTOR_REG |
| 130 | #define IDE_BCOUNTL_REG IDE_LCYL_REG |
| 131 | #define IDE_BCOUNTH_REG IDE_HCYL_REG |
| 132 | |
| 133 | #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) |
| 134 | #define BAD_R_STAT (BUSY_STAT | ERR_STAT) |
| 135 | #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT) |
| 136 | #define BAD_STAT (BAD_R_STAT | DRQ_STAT) |
| 137 | #define DRIVE_READY (READY_STAT | SEEK_STAT) |
| 138 | #define DATA_READY (DRQ_STAT) |
| 139 | |
| 140 | #define BAD_CRC (ABRT_ERR | ICRC_ERR) |
| 141 | |
| 142 | #define SATA_NR_PORTS (3) /* 16 possible ?? */ |
| 143 | |
| 144 | #define SATA_STATUS_OFFSET (0) |
| 145 | #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET]) |
| 146 | #define SATA_ERROR_OFFSET (1) |
| 147 | #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET]) |
| 148 | #define SATA_CONTROL_OFFSET (2) |
| 149 | #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET]) |
| 150 | |
| 151 | #define SATA_MISC_OFFSET (0) |
| 152 | #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET]) |
| 153 | #define SATA_PHY_OFFSET (1) |
| 154 | #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET]) |
| 155 | #define SATA_IEN_OFFSET (2) |
| 156 | #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET]) |
| 157 | |
| 158 | /* |
| 159 | * Our Physical Region Descriptor (PRD) table should be large enough |
| 160 | * to handle the biggest I/O request we are likely to see. Since requests |
| 161 | * can have no more than 256 sectors, and since the typical blocksize is |
| 162 | * two or more sectors, we could get by with a limit of 128 entries here for |
| 163 | * the usual worst case. Most requests seem to include some contiguous blocks, |
| 164 | * further reducing the number of table entries required. |
| 165 | * |
| 166 | * The driver reverts to PIO mode for individual requests that exceed |
| 167 | * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling |
| 168 | * 100% of all crazy scenarios here is not necessary. |
| 169 | * |
| 170 | * As it turns out though, we must allocate a full 4KB page for this, |
| 171 | * so the two PRD tables (ide0 & ide1) will each get half of that, |
| 172 | * allowing each to have about 256 entries (8 bytes each) from this. |
| 173 | */ |
| 174 | #define PRD_BYTES 8 |
| 175 | #define PRD_ENTRIES 256 |
| 176 | |
| 177 | /* |
| 178 | * Some more useful definitions |
| 179 | */ |
| 180 | #define PARTN_BITS 6 /* number of minor dev bits for partitions */ |
| 181 | #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ |
| 182 | #define SECTOR_SIZE 512 |
| 183 | #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */ |
| 184 | #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t))) |
| 185 | |
| 186 | /* |
| 187 | * Timeouts for various operations: |
| 188 | */ |
| 189 | #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */ |
| 190 | #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */ |
| 191 | #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */ |
| 192 | #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */ |
| 193 | #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */ |
| 194 | #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */ |
| 195 | |
| 196 | #define HOST(hwif,chipset) \ |
| 197 | { \ |
| 198 | return ((hwif)->chipset == chipset) ? 1 : 0; \ |
| 199 | } |
| 200 | |
| 201 | /* |
| 202 | * Check for an interrupt and acknowledge the interrupt status |
| 203 | */ |
| 204 | struct hwif_s; |
| 205 | typedef int (ide_ack_intr_t)(struct hwif_s *); |
| 206 | |
| 207 | #ifndef NO_DMA |
| 208 | #define NO_DMA 255 |
| 209 | #endif |
| 210 | |
| 211 | /* |
| 212 | * hwif_chipset_t is used to keep track of the specific hardware |
| 213 | * chipset used by each IDE interface, if known. |
| 214 | */ |
| 215 | typedef enum { ide_unknown, ide_generic, ide_pci, |
| 216 | ide_cmd640, ide_dtc2278, ide_ali14xx, |
| 217 | ide_qd65xx, ide_umc8672, ide_ht6560b, |
| 218 | ide_rz1000, ide_trm290, |
| 219 | ide_cmd646, ide_cy82c693, ide_4drives, |
| 220 | ide_pmac, ide_etrax100, ide_acorn, |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 221 | ide_au1xxx, ide_forced |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } hwif_chipset_t; |
| 223 | |
| 224 | /* |
| 225 | * Structure to hold all information about the location of this port |
| 226 | */ |
| 227 | typedef struct hw_regs_s { |
| 228 | unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */ |
| 229 | int irq; /* our irq number */ |
| 230 | int dma; /* our dma entry */ |
| 231 | ide_ack_intr_t *ack_intr; /* acknowledge interrupt */ |
| 232 | hwif_chipset_t chipset; |
Hannes Reinecke | 4349d5c | 2005-11-09 22:47:18 +0100 | [diff] [blame^] | 233 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } hw_regs_t; |
| 235 | |
| 236 | /* |
| 237 | * Register new hardware with ide |
| 238 | */ |
| 239 | int ide_register_hw(hw_regs_t *hw, struct hwif_s **hwifp); |
| 240 | int ide_register_hw_with_fixup(hw_regs_t *, struct hwif_s **, void (*)(struct hwif_s *)); |
| 241 | |
| 242 | /* |
| 243 | * Set up hw_regs_t structure before calling ide_register_hw (optional) |
| 244 | */ |
| 245 | void ide_setup_ports( hw_regs_t *hw, |
| 246 | unsigned long base, |
| 247 | int *offsets, |
| 248 | unsigned long ctrl, |
| 249 | unsigned long intr, |
| 250 | ide_ack_intr_t *ack_intr, |
| 251 | #if 0 |
| 252 | ide_io_ops_t *iops, |
| 253 | #endif |
| 254 | int irq); |
| 255 | |
| 256 | static inline void ide_std_init_ports(hw_regs_t *hw, |
| 257 | unsigned long io_addr, |
| 258 | unsigned long ctl_addr) |
| 259 | { |
| 260 | unsigned int i; |
| 261 | |
| 262 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) |
| 263 | hw->io_ports[i] = io_addr++; |
| 264 | |
| 265 | hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr; |
| 266 | } |
| 267 | |
| 268 | #include <asm/ide.h> |
| 269 | |
| 270 | /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */ |
| 271 | #ifndef IDE_ARCH_OBSOLETE_DEFAULTS |
| 272 | # define ide_default_io_base(index) (0) |
| 273 | # define ide_default_irq(base) (0) |
| 274 | # define ide_init_default_irq(base) (0) |
| 275 | #endif |
| 276 | |
| 277 | /* |
| 278 | * ide_init_hwif_ports() is OBSOLETE and will be removed in 2.7 series. |
| 279 | * New ports shouldn't define IDE_ARCH_OBSOLETE_INIT in <asm/ide.h>. |
| 280 | */ |
| 281 | #ifdef IDE_ARCH_OBSOLETE_INIT |
| 282 | static inline void ide_init_hwif_ports(hw_regs_t *hw, |
| 283 | unsigned long io_addr, |
| 284 | unsigned long ctl_addr, |
| 285 | int *irq) |
| 286 | { |
| 287 | if (!ctl_addr) |
| 288 | ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr)); |
| 289 | else |
| 290 | ide_std_init_ports(hw, io_addr, ctl_addr); |
| 291 | |
| 292 | if (irq) |
| 293 | *irq = 0; |
| 294 | |
| 295 | hw->io_ports[IDE_IRQ_OFFSET] = 0; |
| 296 | |
| 297 | #ifdef CONFIG_PPC32 |
| 298 | if (ppc_ide_md.ide_init_hwif) |
| 299 | ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq); |
| 300 | #endif |
| 301 | } |
| 302 | #else |
| 303 | static inline void ide_init_hwif_ports(hw_regs_t *hw, |
| 304 | unsigned long io_addr, |
| 305 | unsigned long ctl_addr, |
| 306 | int *irq) |
| 307 | { |
| 308 | if (io_addr || ctl_addr) |
| 309 | printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__); |
| 310 | } |
| 311 | #endif /* IDE_ARCH_OBSOLETE_INIT */ |
| 312 | |
| 313 | /* Currently only m68k, apus and m8xx need it */ |
| 314 | #ifndef IDE_ARCH_ACK_INTR |
| 315 | # define ide_ack_intr(hwif) (1) |
| 316 | #endif |
| 317 | |
| 318 | /* Currently only Atari needs it */ |
| 319 | #ifndef IDE_ARCH_LOCK |
| 320 | # define ide_release_lock() do {} while (0) |
| 321 | # define ide_get_lock(hdlr, data) do {} while (0) |
| 322 | #endif /* IDE_ARCH_LOCK */ |
| 323 | |
| 324 | /* |
| 325 | * Now for the data we need to maintain per-drive: ide_drive_t |
| 326 | */ |
| 327 | |
| 328 | #define ide_scsi 0x21 |
| 329 | #define ide_disk 0x20 |
| 330 | #define ide_optical 0x7 |
| 331 | #define ide_cdrom 0x5 |
| 332 | #define ide_tape 0x1 |
| 333 | #define ide_floppy 0x0 |
| 334 | |
| 335 | /* |
| 336 | * Special Driver Flags |
| 337 | * |
| 338 | * set_geometry : respecify drive geometry |
| 339 | * recalibrate : seek to cyl 0 |
| 340 | * set_multmode : set multmode count |
| 341 | * set_tune : tune interface for drive |
| 342 | * serviced : service command |
| 343 | * reserved : unused |
| 344 | */ |
| 345 | typedef union { |
| 346 | unsigned all : 8; |
| 347 | struct { |
| 348 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 349 | unsigned set_geometry : 1; |
| 350 | unsigned recalibrate : 1; |
| 351 | unsigned set_multmode : 1; |
| 352 | unsigned set_tune : 1; |
| 353 | unsigned serviced : 1; |
| 354 | unsigned reserved : 3; |
| 355 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 356 | unsigned reserved : 3; |
| 357 | unsigned serviced : 1; |
| 358 | unsigned set_tune : 1; |
| 359 | unsigned set_multmode : 1; |
| 360 | unsigned recalibrate : 1; |
| 361 | unsigned set_geometry : 1; |
| 362 | #else |
| 363 | #error "Please fix <asm/byteorder.h>" |
| 364 | #endif |
| 365 | } b; |
| 366 | } special_t; |
| 367 | |
| 368 | /* |
| 369 | * ATA DATA Register Special. |
| 370 | * ATA NSECTOR Count Register(). |
| 371 | * ATAPI Byte Count Register. |
| 372 | * Channel index ordering pairs. |
| 373 | */ |
| 374 | typedef union { |
| 375 | unsigned all :16; |
| 376 | struct { |
| 377 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 378 | unsigned low :8; /* LSB */ |
| 379 | unsigned high :8; /* MSB */ |
| 380 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 381 | unsigned high :8; /* MSB */ |
| 382 | unsigned low :8; /* LSB */ |
| 383 | #else |
| 384 | #error "Please fix <asm/byteorder.h>" |
| 385 | #endif |
| 386 | } b; |
| 387 | } ata_nsector_t, ata_data_t, atapi_bcount_t, ata_index_t; |
| 388 | |
| 389 | /* |
| 390 | * ATA-IDE Error Register |
| 391 | * |
| 392 | * mark : Bad address mark |
| 393 | * tzero : Couldn't find track 0 |
| 394 | * abrt : Aborted Command |
| 395 | * mcr : Media Change Request |
| 396 | * id : ID field not found |
| 397 | * mce : Media Change Event |
| 398 | * ecc : Uncorrectable ECC error |
| 399 | * bdd : dual meaing |
| 400 | */ |
| 401 | typedef union { |
| 402 | unsigned all :8; |
| 403 | struct { |
| 404 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 405 | unsigned mark :1; |
| 406 | unsigned tzero :1; |
| 407 | unsigned abrt :1; |
| 408 | unsigned mcr :1; |
| 409 | unsigned id :1; |
| 410 | unsigned mce :1; |
| 411 | unsigned ecc :1; |
| 412 | unsigned bdd :1; |
| 413 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 414 | unsigned bdd :1; |
| 415 | unsigned ecc :1; |
| 416 | unsigned mce :1; |
| 417 | unsigned id :1; |
| 418 | unsigned mcr :1; |
| 419 | unsigned abrt :1; |
| 420 | unsigned tzero :1; |
| 421 | unsigned mark :1; |
| 422 | #else |
| 423 | #error "Please fix <asm/byteorder.h>" |
| 424 | #endif |
| 425 | } b; |
| 426 | } ata_error_t; |
| 427 | |
| 428 | /* |
| 429 | * ATA-IDE Select Register, aka Device-Head |
| 430 | * |
| 431 | * head : always zeros here |
| 432 | * unit : drive select number: 0/1 |
| 433 | * bit5 : always 1 |
| 434 | * lba : using LBA instead of CHS |
| 435 | * bit7 : always 1 |
| 436 | */ |
| 437 | typedef union { |
| 438 | unsigned all : 8; |
| 439 | struct { |
| 440 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 441 | unsigned head : 4; |
| 442 | unsigned unit : 1; |
| 443 | unsigned bit5 : 1; |
| 444 | unsigned lba : 1; |
| 445 | unsigned bit7 : 1; |
| 446 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 447 | unsigned bit7 : 1; |
| 448 | unsigned lba : 1; |
| 449 | unsigned bit5 : 1; |
| 450 | unsigned unit : 1; |
| 451 | unsigned head : 4; |
| 452 | #else |
| 453 | #error "Please fix <asm/byteorder.h>" |
| 454 | #endif |
| 455 | } b; |
| 456 | } select_t, ata_select_t; |
| 457 | |
| 458 | /* |
| 459 | * The ATA-IDE Status Register. |
| 460 | * The ATAPI Status Register. |
| 461 | * |
| 462 | * check : Error occurred |
| 463 | * idx : Index Error |
| 464 | * corr : Correctable error occurred |
| 465 | * drq : Data is request by the device |
| 466 | * dsc : Disk Seek Complete : ata |
| 467 | * : Media access command finished : atapi |
| 468 | * df : Device Fault : ata |
| 469 | * : Reserved : atapi |
| 470 | * drdy : Ready, Command Mode Capable : ata |
| 471 | * : Ignored for ATAPI commands : atapi |
| 472 | * bsy : Disk is Busy |
| 473 | * : The device has access to the command block |
| 474 | */ |
| 475 | typedef union { |
| 476 | unsigned all :8; |
| 477 | struct { |
| 478 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 479 | unsigned check :1; |
| 480 | unsigned idx :1; |
| 481 | unsigned corr :1; |
| 482 | unsigned drq :1; |
| 483 | unsigned dsc :1; |
| 484 | unsigned df :1; |
| 485 | unsigned drdy :1; |
| 486 | unsigned bsy :1; |
| 487 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 488 | unsigned bsy :1; |
| 489 | unsigned drdy :1; |
| 490 | unsigned df :1; |
| 491 | unsigned dsc :1; |
| 492 | unsigned drq :1; |
| 493 | unsigned corr :1; |
| 494 | unsigned idx :1; |
| 495 | unsigned check :1; |
| 496 | #else |
| 497 | #error "Please fix <asm/byteorder.h>" |
| 498 | #endif |
| 499 | } b; |
| 500 | } ata_status_t, atapi_status_t; |
| 501 | |
| 502 | /* |
| 503 | * ATA-IDE Control Register |
| 504 | * |
| 505 | * bit0 : Should be set to zero |
| 506 | * nIEN : device INTRQ to host |
| 507 | * SRST : host soft reset bit |
| 508 | * bit3 : ATA-2 thingy, Should be set to 1 |
| 509 | * reserved456 : Reserved |
| 510 | * HOB : 48-bit address ordering, High Ordered Bit |
| 511 | */ |
| 512 | typedef union { |
| 513 | unsigned all : 8; |
| 514 | struct { |
| 515 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 516 | unsigned bit0 : 1; |
| 517 | unsigned nIEN : 1; |
| 518 | unsigned SRST : 1; |
| 519 | unsigned bit3 : 1; |
| 520 | unsigned reserved456 : 3; |
| 521 | unsigned HOB : 1; |
| 522 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 523 | unsigned HOB : 1; |
| 524 | unsigned reserved456 : 3; |
| 525 | unsigned bit3 : 1; |
| 526 | unsigned SRST : 1; |
| 527 | unsigned nIEN : 1; |
| 528 | unsigned bit0 : 1; |
| 529 | #else |
| 530 | #error "Please fix <asm/byteorder.h>" |
| 531 | #endif |
| 532 | } b; |
| 533 | } ata_control_t; |
| 534 | |
| 535 | /* |
| 536 | * ATAPI Feature Register |
| 537 | * |
| 538 | * dma : Using DMA or PIO |
| 539 | * reserved321 : Reserved |
| 540 | * reserved654 : Reserved (Tag Type) |
| 541 | * reserved7 : Reserved |
| 542 | */ |
| 543 | typedef union { |
| 544 | unsigned all :8; |
| 545 | struct { |
| 546 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 547 | unsigned dma :1; |
| 548 | unsigned reserved321 :3; |
| 549 | unsigned reserved654 :3; |
| 550 | unsigned reserved7 :1; |
| 551 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 552 | unsigned reserved7 :1; |
| 553 | unsigned reserved654 :3; |
| 554 | unsigned reserved321 :3; |
| 555 | unsigned dma :1; |
| 556 | #else |
| 557 | #error "Please fix <asm/byteorder.h>" |
| 558 | #endif |
| 559 | } b; |
| 560 | } atapi_feature_t; |
| 561 | |
| 562 | /* |
| 563 | * ATAPI Interrupt Reason Register. |
| 564 | * |
| 565 | * cod : Information transferred is command (1) or data (0) |
| 566 | * io : The device requests us to read (1) or write (0) |
| 567 | * reserved : Reserved |
| 568 | */ |
| 569 | typedef union { |
| 570 | unsigned all :8; |
| 571 | struct { |
| 572 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 573 | unsigned cod :1; |
| 574 | unsigned io :1; |
| 575 | unsigned reserved :6; |
| 576 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 577 | unsigned reserved :6; |
| 578 | unsigned io :1; |
| 579 | unsigned cod :1; |
| 580 | #else |
| 581 | #error "Please fix <asm/byteorder.h>" |
| 582 | #endif |
| 583 | } b; |
| 584 | } atapi_ireason_t; |
| 585 | |
| 586 | /* |
| 587 | * The ATAPI error register. |
| 588 | * |
| 589 | * ili : Illegal Length Indication |
| 590 | * eom : End Of Media Detected |
| 591 | * abrt : Aborted command - As defined by ATA |
| 592 | * mcr : Media Change Requested - As defined by ATA |
| 593 | * sense_key : Sense key of the last failed packet command |
| 594 | */ |
| 595 | typedef union { |
| 596 | unsigned all :8; |
| 597 | struct { |
| 598 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 599 | unsigned ili :1; |
| 600 | unsigned eom :1; |
| 601 | unsigned abrt :1; |
| 602 | unsigned mcr :1; |
| 603 | unsigned sense_key :4; |
| 604 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 605 | unsigned sense_key :4; |
| 606 | unsigned mcr :1; |
| 607 | unsigned abrt :1; |
| 608 | unsigned eom :1; |
| 609 | unsigned ili :1; |
| 610 | #else |
| 611 | #error "Please fix <asm/byteorder.h>" |
| 612 | #endif |
| 613 | } b; |
| 614 | } atapi_error_t; |
| 615 | |
| 616 | /* |
| 617 | * ATAPI floppy Drive Select Register |
| 618 | * |
| 619 | * sam_lun : Logical unit number |
| 620 | * reserved3 : Reserved |
| 621 | * drv : The responding drive will be drive 0 (0) or drive 1 (1) |
| 622 | * one5 : Should be set to 1 |
| 623 | * reserved6 : Reserved |
| 624 | * one7 : Should be set to 1 |
| 625 | */ |
| 626 | typedef union { |
| 627 | unsigned all :8; |
| 628 | struct { |
| 629 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 630 | unsigned sam_lun :3; |
| 631 | unsigned reserved3 :1; |
| 632 | unsigned drv :1; |
| 633 | unsigned one5 :1; |
| 634 | unsigned reserved6 :1; |
| 635 | unsigned one7 :1; |
| 636 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 637 | unsigned one7 :1; |
| 638 | unsigned reserved6 :1; |
| 639 | unsigned one5 :1; |
| 640 | unsigned drv :1; |
| 641 | unsigned reserved3 :1; |
| 642 | unsigned sam_lun :3; |
| 643 | #else |
| 644 | #error "Please fix <asm/byteorder.h>" |
| 645 | #endif |
| 646 | } b; |
| 647 | } atapi_select_t; |
| 648 | |
| 649 | /* |
| 650 | * Status returned from various ide_ functions |
| 651 | */ |
| 652 | typedef enum { |
| 653 | ide_stopped, /* no drive operation was started */ |
| 654 | ide_started, /* a drive operation was started, handler was set */ |
| 655 | } ide_startstop_t; |
| 656 | |
| 657 | struct ide_driver_s; |
| 658 | struct ide_settings_s; |
| 659 | |
| 660 | typedef struct ide_drive_s { |
| 661 | char name[4]; /* drive name, such as "hda" */ |
| 662 | char driver_req[10]; /* requests specific driver */ |
| 663 | |
| 664 | request_queue_t *queue; /* request queue */ |
| 665 | |
| 666 | struct request *rq; /* current request */ |
| 667 | struct ide_drive_s *next; /* circular list of hwgroup drives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | void *driver_data; /* extra driver data */ |
| 669 | struct hd_driveid *id; /* drive model identification info */ |
| 670 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| 671 | struct ide_settings_s *settings;/* /proc/ide/ drive settings */ |
| 672 | char devfs_name[64]; /* devfs crap */ |
| 673 | |
| 674 | struct hwif_s *hwif; /* actually (ide_hwif_t *) */ |
| 675 | |
| 676 | unsigned long sleep; /* sleep until this time */ |
| 677 | unsigned long service_start; /* time we started last request */ |
| 678 | unsigned long service_time; /* service time of last request */ |
| 679 | unsigned long timeout; /* max time to wait for irq */ |
| 680 | |
| 681 | special_t special; /* special action flags */ |
| 682 | select_t select; /* basic drive/head select reg value */ |
| 683 | |
| 684 | u8 keep_settings; /* restore settings after drive reset */ |
| 685 | u8 autodma; /* device can safely use dma on host */ |
| 686 | u8 using_dma; /* disk is using dma for read/write */ |
| 687 | u8 retry_pio; /* retrying dma capable host in pio */ |
| 688 | u8 state; /* retry state */ |
| 689 | u8 waiting_for_dma; /* dma currently in progress */ |
| 690 | u8 unmask; /* okay to unmask other irqs */ |
| 691 | u8 bswap; /* byte swap data */ |
| 692 | u8 dsc_overlap; /* DSC overlap */ |
| 693 | u8 nice1; /* give potential excess bandwidth */ |
| 694 | |
| 695 | unsigned present : 1; /* drive is physically present */ |
| 696 | unsigned dead : 1; /* device ejected hint */ |
| 697 | unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */ |
| 698 | unsigned noprobe : 1; /* from: hdx=noprobe */ |
| 699 | unsigned removable : 1; /* 1 if need to do check_media_change */ |
| 700 | unsigned attach : 1; /* needed for removable devices */ |
| 701 | unsigned is_flash : 1; /* 1 if probed as flash */ |
| 702 | unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */ |
| 703 | unsigned no_unmask : 1; /* disallow setting unmask bit */ |
| 704 | unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */ |
| 705 | unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */ |
| 706 | unsigned nice0 : 1; /* give obvious excess bandwidth */ |
| 707 | unsigned nice2 : 1; /* give a share in our own bandwidth */ |
| 708 | unsigned doorlocking : 1; /* for removable only: door lock/unlock works */ |
| 709 | unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */ |
| 710 | unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */ |
| 711 | unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ |
| 712 | unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */ |
| 713 | unsigned addressing; /* : 3; |
| 714 | * 0=28-bit |
| 715 | * 1=48-bit |
| 716 | * 2=48-bit doing 28-bit |
| 717 | * 3=64-bit |
| 718 | */ |
| 719 | unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */ |
| 720 | unsigned sleeping : 1; /* 1=sleeping & sleep field valid */ |
| 721 | unsigned post_reset : 1; |
| 722 | |
| 723 | u8 quirk_list; /* considered quirky, set for a specific host */ |
| 724 | u8 init_speed; /* transfer rate set at boot */ |
| 725 | u8 pio_speed; /* unused by core, used by some drivers for fallback from DMA */ |
| 726 | u8 current_speed; /* current transfer rate set */ |
| 727 | u8 dn; /* now wide spread use */ |
| 728 | u8 wcache; /* status of write cache */ |
| 729 | u8 acoustic; /* acoustic management */ |
| 730 | u8 media; /* disk, cdrom, tape, floppy, ... */ |
| 731 | u8 ctl; /* "normal" value for IDE_CONTROL_REG */ |
| 732 | u8 ready_stat; /* min status value for drive ready */ |
| 733 | u8 mult_count; /* current multiple sector setting */ |
| 734 | u8 mult_req; /* requested multiple sector setting */ |
| 735 | u8 tune_req; /* requested drive tuning setting */ |
| 736 | u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ |
| 737 | u8 bad_wstat; /* used for ignoring WRERR_STAT */ |
| 738 | u8 nowerr; /* used for ignoring WRERR_STAT */ |
| 739 | u8 sect0; /* offset of first sector for DM6:DDO */ |
| 740 | u8 head; /* "real" number of heads */ |
| 741 | u8 sect; /* "real" sectors per track */ |
| 742 | u8 bios_head; /* BIOS/fdisk/LILO number of heads */ |
| 743 | u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ |
| 744 | |
| 745 | unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ |
| 746 | unsigned int cyl; /* "real" number of cyls */ |
| 747 | unsigned int drive_data; /* use by tuneproc/selectproc */ |
| 748 | unsigned int usage; /* current "open()" count for drive */ |
| 749 | unsigned int failures; /* current failure count */ |
| 750 | unsigned int max_failures; /* maximum allowed failure count */ |
| 751 | |
| 752 | u64 capacity64; /* total number of sectors */ |
| 753 | |
| 754 | int lun; /* logical unit */ |
| 755 | int crc_count; /* crc counter to reduce drive speed */ |
| 756 | struct list_head list; |
| 757 | struct device gendev; |
| 758 | struct semaphore gendev_rel_sem; /* to deal with device release() */ |
| 759 | } ide_drive_t; |
| 760 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 761 | #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) |
| 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | #define IDE_CHIPSET_PCI_MASK \ |
| 764 | ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx)) |
| 765 | #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1) |
| 766 | |
| 767 | struct ide_pci_device_s; |
| 768 | |
| 769 | typedef struct hwif_s { |
| 770 | struct hwif_s *next; /* for linked-list in ide_hwgroup_t */ |
| 771 | struct hwif_s *mate; /* other hwif from same PCI chip */ |
| 772 | struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */ |
| 773 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| 774 | |
| 775 | char name[6]; /* name of interface, eg. "ide0" */ |
| 776 | |
| 777 | /* task file registers for pata and sata */ |
| 778 | unsigned long io_ports[IDE_NR_PORTS]; |
| 779 | unsigned long sata_scr[SATA_NR_PORTS]; |
| 780 | unsigned long sata_misc[SATA_NR_PORTS]; |
| 781 | |
| 782 | hw_regs_t hw; /* Hardware info */ |
| 783 | ide_drive_t drives[MAX_DRIVES]; /* drive info */ |
| 784 | |
| 785 | u8 major; /* our major number */ |
| 786 | u8 index; /* 0 for ide0; 1 for ide1; ... */ |
| 787 | u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ |
| 788 | u8 straight8; /* Alan's straight 8 check */ |
| 789 | u8 bus_state; /* power state of the IDE bus */ |
| 790 | |
| 791 | u8 atapi_dma; /* host supports atapi_dma */ |
| 792 | u8 ultra_mask; |
| 793 | u8 mwdma_mask; |
| 794 | u8 swdma_mask; |
| 795 | |
| 796 | hwif_chipset_t chipset; /* sub-module for tuning.. */ |
| 797 | |
| 798 | struct pci_dev *pci_dev; /* for pci chipsets */ |
| 799 | struct ide_pci_device_s *cds; /* chipset device struct */ |
| 800 | |
| 801 | void (*rw_disk)(ide_drive_t *, struct request *); |
| 802 | |
| 803 | #if 0 |
| 804 | ide_hwif_ops_t *hwifops; |
| 805 | #else |
| 806 | /* routine to tune PIO mode for drives */ |
| 807 | void (*tuneproc)(ide_drive_t *, u8); |
| 808 | /* routine to retune DMA modes for drives */ |
| 809 | int (*speedproc)(ide_drive_t *, u8); |
| 810 | /* tweaks hardware to select drive */ |
| 811 | void (*selectproc)(ide_drive_t *); |
| 812 | /* chipset polling based on hba specifics */ |
| 813 | int (*reset_poll)(ide_drive_t *); |
| 814 | /* chipset specific changes to default for device-hba resets */ |
| 815 | void (*pre_reset)(ide_drive_t *); |
| 816 | /* routine to reset controller after a disk reset */ |
| 817 | void (*resetproc)(ide_drive_t *); |
| 818 | /* special interrupt handling for shared pci interrupts */ |
| 819 | void (*intrproc)(ide_drive_t *); |
| 820 | /* special host masking for drive selection */ |
| 821 | void (*maskproc)(ide_drive_t *, int); |
| 822 | /* check host's drive quirk list */ |
| 823 | int (*quirkproc)(ide_drive_t *); |
| 824 | /* driver soft-power interface */ |
| 825 | int (*busproc)(ide_drive_t *, int); |
| 826 | // /* host rate limiter */ |
| 827 | // u8 (*ratemask)(ide_drive_t *); |
| 828 | // /* device rate limiter */ |
| 829 | // u8 (*ratefilter)(ide_drive_t *, u8); |
| 830 | #endif |
| 831 | |
| 832 | void (*ata_input_data)(ide_drive_t *, void *, u32); |
| 833 | void (*ata_output_data)(ide_drive_t *, void *, u32); |
| 834 | |
| 835 | void (*atapi_input_bytes)(ide_drive_t *, void *, u32); |
| 836 | void (*atapi_output_bytes)(ide_drive_t *, void *, u32); |
| 837 | |
| 838 | int (*dma_setup)(ide_drive_t *); |
| 839 | void (*dma_exec_cmd)(ide_drive_t *, u8); |
| 840 | void (*dma_start)(ide_drive_t *); |
| 841 | int (*ide_dma_end)(ide_drive_t *drive); |
| 842 | int (*ide_dma_check)(ide_drive_t *drive); |
| 843 | int (*ide_dma_on)(ide_drive_t *drive); |
| 844 | int (*ide_dma_off_quietly)(ide_drive_t *drive); |
| 845 | int (*ide_dma_test_irq)(ide_drive_t *drive); |
| 846 | int (*ide_dma_host_on)(ide_drive_t *drive); |
| 847 | int (*ide_dma_host_off)(ide_drive_t *drive); |
| 848 | int (*ide_dma_lostirq)(ide_drive_t *drive); |
| 849 | int (*ide_dma_timeout)(ide_drive_t *drive); |
| 850 | |
| 851 | void (*OUTB)(u8 addr, unsigned long port); |
| 852 | void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port); |
| 853 | void (*OUTW)(u16 addr, unsigned long port); |
| 854 | void (*OUTL)(u32 addr, unsigned long port); |
| 855 | void (*OUTSW)(unsigned long port, void *addr, u32 count); |
| 856 | void (*OUTSL)(unsigned long port, void *addr, u32 count); |
| 857 | |
| 858 | u8 (*INB)(unsigned long port); |
| 859 | u16 (*INW)(unsigned long port); |
| 860 | u32 (*INL)(unsigned long port); |
| 861 | void (*INSW)(unsigned long port, void *addr, u32 count); |
| 862 | void (*INSL)(unsigned long port, void *addr, u32 count); |
| 863 | |
| 864 | /* dma physical region descriptor table (cpu view) */ |
| 865 | unsigned int *dmatable_cpu; |
| 866 | /* dma physical region descriptor table (dma view) */ |
| 867 | dma_addr_t dmatable_dma; |
| 868 | /* Scatter-gather list used to build the above */ |
| 869 | struct scatterlist *sg_table; |
| 870 | int sg_max_nents; /* Maximum number of entries in it */ |
| 871 | int sg_nents; /* Current number of entries in it */ |
| 872 | int sg_dma_direction; /* dma transfer direction */ |
| 873 | |
| 874 | /* data phase of the active command (currently only valid for PIO/DMA) */ |
| 875 | int data_phase; |
| 876 | |
| 877 | unsigned int nsect; |
| 878 | unsigned int nleft; |
| 879 | unsigned int cursg; |
| 880 | unsigned int cursg_ofs; |
| 881 | |
| 882 | int mmio; /* hosts iomio (0) or custom (2) select */ |
| 883 | int rqsize; /* max sectors per request */ |
| 884 | int irq; /* our irq number */ |
| 885 | |
| 886 | unsigned long dma_master; /* reference base addr dmabase */ |
| 887 | unsigned long dma_base; /* base addr for dma ports */ |
| 888 | unsigned long dma_command; /* dma command register */ |
| 889 | unsigned long dma_vendor1; /* dma vendor 1 register */ |
| 890 | unsigned long dma_status; /* dma status register */ |
| 891 | unsigned long dma_vendor3; /* dma vendor 3 register */ |
| 892 | unsigned long dma_prdtable; /* actual prd table address */ |
| 893 | unsigned long dma_base2; /* extended base addr for dma ports */ |
| 894 | |
| 895 | unsigned dma_extra; /* extra addr for dma ports */ |
| 896 | unsigned long config_data; /* for use by chipset-specific code */ |
| 897 | unsigned long select_data; /* for use by chipset-specific code */ |
| 898 | |
| 899 | unsigned noprobe : 1; /* don't probe for this interface */ |
| 900 | unsigned present : 1; /* this interface exists */ |
| 901 | unsigned hold : 1; /* this interface is always present */ |
| 902 | unsigned serialized : 1; /* serialized all channel operation */ |
| 903 | unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */ |
| 904 | unsigned reset : 1; /* reset after probe */ |
| 905 | unsigned autodma : 1; /* auto-attempt using DMA at boot */ |
| 906 | unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */ |
| 907 | unsigned no_lba48 : 1; /* 1 = cannot do LBA48 */ |
| 908 | unsigned no_lba48_dma : 1; /* 1 = cannot do LBA48 DMA */ |
| 909 | unsigned no_dsc : 1; /* 0 default, 1 dsc_overlap disabled */ |
| 910 | unsigned auto_poll : 1; /* supports nop auto-poll */ |
| 911 | unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ |
| 912 | |
| 913 | struct device gendev; |
| 914 | struct semaphore gendev_rel_sem; /* To deal with device release() */ |
| 915 | |
| 916 | void *hwif_data; /* extra hwif data */ |
| 917 | |
| 918 | unsigned dma; |
| 919 | |
| 920 | void (*led_act)(void *data, int rw); |
Christoph Lameter | 1946089 | 2005-06-23 00:08:19 -0700 | [diff] [blame] | 921 | } ____cacheline_maxaligned_in_smp ide_hwif_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
| 923 | /* |
| 924 | * internal ide interrupt handler type |
| 925 | */ |
| 926 | typedef ide_startstop_t (ide_pre_handler_t)(ide_drive_t *, struct request *); |
| 927 | typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
| 928 | typedef int (ide_expiry_t)(ide_drive_t *); |
| 929 | |
| 930 | typedef struct hwgroup_s { |
| 931 | /* irq handler, if active */ |
| 932 | ide_startstop_t (*handler)(ide_drive_t *); |
| 933 | /* irq handler, suspended if active */ |
| 934 | ide_startstop_t (*handler_save)(ide_drive_t *); |
| 935 | /* BOOL: protects all fields below */ |
| 936 | volatile int busy; |
| 937 | /* BOOL: wake us up on timer expiry */ |
| 938 | unsigned int sleeping : 1; |
| 939 | /* BOOL: polling active & poll_timeout field valid */ |
| 940 | unsigned int polling : 1; |
| 941 | /* current drive */ |
| 942 | ide_drive_t *drive; |
| 943 | /* ptr to current hwif in linked-list */ |
| 944 | ide_hwif_t *hwif; |
| 945 | |
| 946 | /* for pci chipsets */ |
| 947 | struct pci_dev *pci_dev; |
| 948 | /* chipset device struct */ |
| 949 | struct ide_pci_device_s *cds; |
| 950 | |
| 951 | /* current request */ |
| 952 | struct request *rq; |
| 953 | /* failsafe timer */ |
| 954 | struct timer_list timer; |
| 955 | /* local copy of current write rq */ |
| 956 | struct request wrq; |
| 957 | /* timeout value during long polls */ |
| 958 | unsigned long poll_timeout; |
| 959 | /* queried upon timeouts */ |
| 960 | int (*expiry)(ide_drive_t *); |
| 961 | /* ide_system_bus_speed */ |
| 962 | int pio_clock; |
| 963 | |
| 964 | unsigned char cmd_buf[4]; |
| 965 | } ide_hwgroup_t; |
| 966 | |
| 967 | /* structure attached to the request for IDE_TASK_CMDS */ |
| 968 | |
| 969 | /* |
| 970 | * configurable drive settings |
| 971 | */ |
| 972 | |
| 973 | #define TYPE_INT 0 |
| 974 | #define TYPE_INTA 1 |
| 975 | #define TYPE_BYTE 2 |
| 976 | #define TYPE_SHORT 3 |
| 977 | |
| 978 | #define SETTING_READ (1 << 0) |
| 979 | #define SETTING_WRITE (1 << 1) |
| 980 | #define SETTING_RW (SETTING_READ | SETTING_WRITE) |
| 981 | |
| 982 | typedef int (ide_procset_t)(ide_drive_t *, int); |
| 983 | typedef struct ide_settings_s { |
| 984 | char *name; |
| 985 | int rw; |
| 986 | int read_ioctl; |
| 987 | int write_ioctl; |
| 988 | int data_type; |
| 989 | int min; |
| 990 | int max; |
| 991 | int mul_factor; |
| 992 | int div_factor; |
| 993 | void *data; |
| 994 | ide_procset_t *set; |
| 995 | int auto_remove; |
| 996 | struct ide_settings_s *next; |
| 997 | } ide_settings_t; |
| 998 | |
| 999 | extern struct semaphore ide_setting_sem; |
| 1000 | extern int ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set); |
| 1001 | extern ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name); |
| 1002 | extern int ide_read_setting(ide_drive_t *t, ide_settings_t *setting); |
| 1003 | extern int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val); |
| 1004 | extern void ide_add_generic_settings(ide_drive_t *drive); |
| 1005 | |
| 1006 | /* |
| 1007 | * /proc/ide interface |
| 1008 | */ |
| 1009 | typedef struct { |
| 1010 | const char *name; |
| 1011 | mode_t mode; |
| 1012 | read_proc_t *read_proc; |
| 1013 | write_proc_t *write_proc; |
| 1014 | } ide_proc_entry_t; |
| 1015 | |
| 1016 | #ifdef CONFIG_PROC_FS |
| 1017 | extern struct proc_dir_entry *proc_ide_root; |
| 1018 | |
| 1019 | extern void proc_ide_create(void); |
| 1020 | extern void proc_ide_destroy(void); |
| 1021 | extern void create_proc_ide_interfaces(void); |
| 1022 | void destroy_proc_ide_interface(ide_hwif_t *); |
| 1023 | extern void ide_add_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *, void *); |
| 1024 | extern void ide_remove_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *); |
| 1025 | read_proc_t proc_ide_read_capacity; |
| 1026 | read_proc_t proc_ide_read_geometry; |
| 1027 | |
| 1028 | #ifdef CONFIG_BLK_DEV_IDEPCI |
| 1029 | void ide_pci_create_host_proc(const char *, get_info_t *); |
| 1030 | #endif |
| 1031 | |
| 1032 | /* |
| 1033 | * Standard exit stuff: |
| 1034 | */ |
| 1035 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \ |
| 1036 | { \ |
| 1037 | len -= off; \ |
| 1038 | if (len < count) { \ |
| 1039 | *eof = 1; \ |
| 1040 | if (len <= 0) \ |
| 1041 | return 0; \ |
| 1042 | } else \ |
| 1043 | len = count; \ |
| 1044 | *start = page + off; \ |
| 1045 | return len; \ |
| 1046 | } |
| 1047 | #else |
| 1048 | static inline void create_proc_ide_interfaces(void) { ; } |
| 1049 | static inline void destroy_proc_ide_interface(ide_hwif_t *hwif) { ; } |
| 1050 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; |
| 1051 | #endif |
| 1052 | |
| 1053 | /* |
| 1054 | * Power Management step value (rq->pm->pm_step). |
| 1055 | * |
| 1056 | * The step value starts at 0 (ide_pm_state_start_suspend) for a |
| 1057 | * suspend operation or 1000 (ide_pm_state_start_resume) for a |
| 1058 | * resume operation. |
| 1059 | * |
| 1060 | * For each step, the core calls the subdriver start_power_step() first. |
| 1061 | * This can return: |
| 1062 | * - ide_stopped : In this case, the core calls us back again unless |
| 1063 | * step have been set to ide_power_state_completed. |
| 1064 | * - ide_started : In this case, the channel is left busy until an |
| 1065 | * async event (interrupt) occurs. |
| 1066 | * Typically, start_power_step() will issue a taskfile request with |
| 1067 | * do_rw_taskfile(). |
| 1068 | * |
| 1069 | * Upon reception of the interrupt, the core will call complete_power_step() |
| 1070 | * with the error code if any. This routine should update the step value |
| 1071 | * and return. It should not start a new request. The core will call |
| 1072 | * start_power_step for the new step value, unless step have been set to |
| 1073 | * ide_power_state_completed. |
| 1074 | * |
| 1075 | * Subdrivers are expected to define their own additional power |
| 1076 | * steps from 1..999 for suspend and from 1001..1999 for resume, |
| 1077 | * other values are reserved for future use. |
| 1078 | */ |
| 1079 | |
| 1080 | enum { |
| 1081 | ide_pm_state_completed = -1, |
| 1082 | ide_pm_state_start_suspend = 0, |
| 1083 | ide_pm_state_start_resume = 1000, |
| 1084 | }; |
| 1085 | |
| 1086 | /* |
| 1087 | * Subdrivers support. |
| 1088 | */ |
| 1089 | typedef struct ide_driver_s { |
| 1090 | struct module *owner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | const char *version; |
| 1092 | u8 media; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | unsigned supports_dsc_overlap : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); |
| 1095 | int (*end_request)(ide_drive_t *, int, int); |
| 1096 | ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8); |
| 1097 | ide_startstop_t (*abort)(ide_drive_t *, struct request *rq); |
| 1098 | int (*ioctl)(ide_drive_t *, struct inode *, struct file *, unsigned int, unsigned long); |
| 1099 | ide_proc_entry_t *proc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | void (*ata_prebuilder)(ide_drive_t *); |
| 1101 | void (*atapi_prebuilder)(ide_drive_t *); |
| 1102 | struct device_driver gen_driver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | } ide_driver_t; |
| 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long); |
| 1106 | |
| 1107 | /* |
| 1108 | * ide_hwifs[] is the master data structure used to keep track |
| 1109 | * of just about everything in ide.c. Whenever possible, routines |
| 1110 | * should be using pointers to a drive (ide_drive_t *) or |
| 1111 | * pointers to a hwif (ide_hwif_t *), rather than indexing this |
| 1112 | * structure directly (the allocation/layout may change!). |
| 1113 | * |
| 1114 | */ |
| 1115 | #ifndef _IDE_C |
| 1116 | extern ide_hwif_t ide_hwifs[]; /* master data repository */ |
| 1117 | #endif |
| 1118 | extern int noautodma; |
| 1119 | |
| 1120 | extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs); |
| 1121 | extern int __ide_end_request (ide_drive_t *drive, struct request *rq, int uptodate, int nrsecs); |
| 1122 | |
| 1123 | /* |
| 1124 | * This is used on exit from the driver to designate the next irq handler |
| 1125 | * and also to start the safety timer. |
| 1126 | */ |
| 1127 | extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry); |
| 1128 | |
| 1129 | /* |
| 1130 | * This is used on exit from the driver to designate the next irq handler |
| 1131 | * and start the safety time safely and atomically from the IRQ handler |
| 1132 | * with respect to the command issue (which it also does) |
| 1133 | */ |
| 1134 | extern void ide_execute_command(ide_drive_t *, task_ioreg_t cmd, ide_handler_t *, unsigned int, ide_expiry_t *); |
| 1135 | |
| 1136 | ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); |
| 1137 | |
| 1138 | /* |
| 1139 | * ide_error() takes action based on the error returned by the controller. |
| 1140 | * The caller should return immediately after invoking this. |
| 1141 | * |
| 1142 | * (drive, msg, status) |
| 1143 | */ |
| 1144 | ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); |
| 1145 | |
| 1146 | ide_startstop_t __ide_abort(ide_drive_t *, struct request *); |
| 1147 | |
| 1148 | /* |
| 1149 | * Abort a running command on the controller triggering the abort |
| 1150 | * from a host side, non error situation |
| 1151 | * (drive, msg) |
| 1152 | */ |
| 1153 | extern ide_startstop_t ide_abort(ide_drive_t *, const char *); |
| 1154 | |
| 1155 | extern void ide_fix_driveid(struct hd_driveid *); |
| 1156 | /* |
| 1157 | * ide_fixstring() cleans up and (optionally) byte-swaps a text string, |
| 1158 | * removing leading/trailing blanks and compressing internal blanks. |
| 1159 | * It is primarily used to tidy up the model name/number fields as |
| 1160 | * returned by the WIN_[P]IDENTIFY commands. |
| 1161 | * |
| 1162 | * (s, bytecount, byteswap) |
| 1163 | */ |
| 1164 | extern void ide_fixstring(u8 *, const int, const int); |
| 1165 | |
| 1166 | /* |
| 1167 | * This routine busy-waits for the drive status to be not "busy". |
| 1168 | * It then checks the status for all of the "good" bits and none |
| 1169 | * of the "bad" bits, and if all is okay it returns 0. All other |
| 1170 | * cases return 1 after doing "*startstop = ide_error()", and the |
| 1171 | * caller should return the updated value of "startstop" in this case. |
| 1172 | * "startstop" is unchanged when the function returns 0; |
| 1173 | * (startstop, drive, good, bad, timeout) |
| 1174 | */ |
| 1175 | extern int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
| 1176 | |
| 1177 | /* |
| 1178 | * Start a reset operation for an IDE interface. |
| 1179 | * The caller should return immediately after invoking this. |
| 1180 | */ |
| 1181 | extern ide_startstop_t ide_do_reset (ide_drive_t *); |
| 1182 | |
| 1183 | /* |
| 1184 | * This function is intended to be used prior to invoking ide_do_drive_cmd(). |
| 1185 | */ |
| 1186 | extern void ide_init_drive_cmd (struct request *rq); |
| 1187 | |
| 1188 | /* |
| 1189 | * this function returns error location sector offset in case of a write error |
| 1190 | */ |
| 1191 | extern u64 ide_get_error_location(ide_drive_t *, char *); |
| 1192 | |
| 1193 | /* |
| 1194 | * "action" parameter type for ide_do_drive_cmd() below. |
| 1195 | */ |
| 1196 | typedef enum { |
| 1197 | ide_wait, /* insert rq at end of list, and wait for it */ |
| 1198 | ide_next, /* insert rq immediately after current request */ |
| 1199 | ide_preempt, /* insert rq in front of current request */ |
| 1200 | ide_head_wait, /* insert rq in front of current request and wait for it */ |
| 1201 | ide_end /* insert rq at end of list, but don't wait for it */ |
| 1202 | } ide_action_t; |
| 1203 | |
| 1204 | /* |
| 1205 | * This function issues a special IDE device request |
| 1206 | * onto the request queue. |
| 1207 | * |
| 1208 | * If action is ide_wait, then the rq is queued at the end of the |
| 1209 | * request queue, and the function sleeps until it has been processed. |
| 1210 | * This is for use when invoked from an ioctl handler. |
| 1211 | * |
| 1212 | * If action is ide_preempt, then the rq is queued at the head of |
| 1213 | * the request queue, displacing the currently-being-processed |
| 1214 | * request and this function returns immediately without waiting |
| 1215 | * for the new rq to be completed. This is VERY DANGEROUS, and is |
| 1216 | * intended for careful use by the ATAPI tape/cdrom driver code. |
| 1217 | * |
| 1218 | * If action is ide_next, then the rq is queued immediately after |
| 1219 | * the currently-being-processed-request (if any), and the function |
| 1220 | * returns without waiting for the new rq to be completed. As above, |
| 1221 | * This is VERY DANGEROUS, and is intended for careful use by the |
| 1222 | * ATAPI tape/cdrom driver code. |
| 1223 | * |
| 1224 | * If action is ide_end, then the rq is queued at the end of the |
| 1225 | * request queue, and the function returns immediately without waiting |
| 1226 | * for the new rq to be completed. This is again intended for careful |
| 1227 | * use by the ATAPI tape/cdrom driver code. |
| 1228 | */ |
| 1229 | extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t); |
| 1230 | |
| 1231 | /* |
| 1232 | * Clean up after success/failure of an explicit drive cmd. |
| 1233 | * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD). |
| 1234 | * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_TASK_MASK). |
| 1235 | * |
| 1236 | * (ide_drive_t *drive, u8 stat, u8 err) |
| 1237 | */ |
| 1238 | extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); |
| 1239 | |
| 1240 | /* |
| 1241 | * Issue ATA command and wait for completion. |
| 1242 | * Use for implementing commands in kernel |
| 1243 | * |
| 1244 | * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) |
| 1245 | */ |
| 1246 | extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *); |
| 1247 | |
| 1248 | typedef struct ide_task_s { |
| 1249 | /* |
| 1250 | * struct hd_drive_task_hdr tf; |
| 1251 | * task_struct_t tf; |
| 1252 | * struct hd_drive_hob_hdr hobf; |
| 1253 | * hob_struct_t hobf; |
| 1254 | */ |
| 1255 | task_ioreg_t tfRegister[8]; |
| 1256 | task_ioreg_t hobRegister[8]; |
| 1257 | ide_reg_valid_t tf_out_flags; |
| 1258 | ide_reg_valid_t tf_in_flags; |
| 1259 | int data_phase; |
| 1260 | int command_type; |
| 1261 | ide_pre_handler_t *prehandler; |
| 1262 | ide_handler_t *handler; |
| 1263 | struct request *rq; /* copy of request */ |
| 1264 | void *special; /* valid_t generally */ |
| 1265 | } ide_task_t; |
| 1266 | |
| 1267 | extern u32 ide_read_24(ide_drive_t *); |
| 1268 | |
| 1269 | extern void SELECT_DRIVE(ide_drive_t *); |
| 1270 | extern void SELECT_INTERRUPT(ide_drive_t *); |
| 1271 | extern void SELECT_MASK(ide_drive_t *, int); |
| 1272 | extern void QUIRK_LIST(ide_drive_t *); |
| 1273 | |
| 1274 | extern int drive_is_ready(ide_drive_t *); |
| 1275 | extern int wait_for_ready(ide_drive_t *, int /* timeout */); |
| 1276 | |
| 1277 | /* |
| 1278 | * taskfile io for disks for now...and builds request from ide_ioctl |
| 1279 | */ |
| 1280 | extern ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); |
| 1281 | |
| 1282 | /* |
| 1283 | * Special Flagged Register Validation Caller |
| 1284 | */ |
| 1285 | extern ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *); |
| 1286 | |
| 1287 | extern ide_startstop_t set_multmode_intr(ide_drive_t *); |
| 1288 | extern ide_startstop_t set_geometry_intr(ide_drive_t *); |
| 1289 | extern ide_startstop_t recal_intr(ide_drive_t *); |
| 1290 | extern ide_startstop_t task_no_data_intr(ide_drive_t *); |
| 1291 | extern ide_startstop_t task_in_intr(ide_drive_t *); |
| 1292 | extern ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
| 1293 | |
| 1294 | extern int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *); |
| 1295 | |
| 1296 | int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long); |
| 1297 | int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long); |
| 1298 | int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long); |
| 1299 | |
| 1300 | extern int system_bus_clock(void); |
| 1301 | |
| 1302 | extern int ide_driveid_update(ide_drive_t *); |
| 1303 | extern int ide_ata66_check(ide_drive_t *, ide_task_t *); |
| 1304 | extern int ide_config_drive_speed(ide_drive_t *, u8); |
| 1305 | extern u8 eighty_ninty_three (ide_drive_t *); |
| 1306 | extern int set_transfer(ide_drive_t *, ide_task_t *); |
| 1307 | extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
| 1308 | |
| 1309 | extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); |
| 1310 | |
| 1311 | /* |
| 1312 | * ide_stall_queue() can be used by a drive to give excess bandwidth back |
| 1313 | * to the hwgroup by sleeping for timeout jiffies. |
| 1314 | */ |
| 1315 | extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
| 1316 | |
| 1317 | extern int ide_spin_wait_hwgroup(ide_drive_t *); |
| 1318 | extern void ide_timer_expiry(unsigned long); |
| 1319 | extern irqreturn_t ide_intr(int irq, void *dev_id, struct pt_regs *regs); |
| 1320 | extern void do_ide_request(request_queue_t *); |
| 1321 | extern void ide_init_subdrivers(void); |
| 1322 | |
| 1323 | void ide_init_disk(struct gendisk *, ide_drive_t *); |
| 1324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | extern int ideprobe_init(void); |
| 1326 | |
| 1327 | extern void ide_scan_pcibus(int scan_direction) __init; |
| 1328 | extern int ide_pci_register_driver(struct pci_driver *driver); |
| 1329 | extern void ide_pci_unregister_driver(struct pci_driver *driver); |
| 1330 | void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, ata_index_t *); |
| 1331 | extern void ide_setup_pci_noise (struct pci_dev *dev, struct ide_pci_device_s *d); |
| 1332 | |
| 1333 | extern void default_hwif_iops(ide_hwif_t *); |
| 1334 | extern void default_hwif_mmiops(ide_hwif_t *); |
| 1335 | extern void default_hwif_transport(ide_hwif_t *); |
| 1336 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1337 | void ide_register_subdriver(ide_drive_t *, ide_driver_t *); |
| 1338 | void ide_unregister_subdriver(ide_drive_t *, ide_driver_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | |
| 1340 | #define ON_BOARD 1 |
| 1341 | #define NEVER_BOARD 0 |
| 1342 | |
| 1343 | #ifdef CONFIG_BLK_DEV_OFFBOARD |
| 1344 | # define OFF_BOARD ON_BOARD |
| 1345 | #else /* CONFIG_BLK_DEV_OFFBOARD */ |
| 1346 | # define OFF_BOARD NEVER_BOARD |
| 1347 | #endif /* CONFIG_BLK_DEV_OFFBOARD */ |
| 1348 | |
| 1349 | #define NODMA 0 |
| 1350 | #define NOAUTODMA 1 |
| 1351 | #define AUTODMA 2 |
| 1352 | |
| 1353 | typedef struct ide_pci_enablebit_s { |
| 1354 | u8 reg; /* byte pci reg holding the enable-bit */ |
| 1355 | u8 mask; /* mask to isolate the enable-bit */ |
| 1356 | u8 val; /* value of masked reg when "enabled" */ |
| 1357 | } ide_pci_enablebit_t; |
| 1358 | |
| 1359 | enum { |
| 1360 | /* Uses ISA control ports not PCI ones. */ |
| 1361 | IDEPCI_FLAG_ISA_PORTS = (1 << 0), |
| 1362 | IDEPCI_FLAG_FORCE_PDC = (1 << 1), |
| 1363 | }; |
| 1364 | |
| 1365 | typedef struct ide_pci_device_s { |
| 1366 | char *name; |
| 1367 | int (*init_setup)(struct pci_dev *, struct ide_pci_device_s *); |
| 1368 | void (*init_setup_dma)(struct pci_dev *, struct ide_pci_device_s *, ide_hwif_t *); |
| 1369 | unsigned int (*init_chipset)(struct pci_dev *, const char *); |
| 1370 | void (*init_iops)(ide_hwif_t *); |
| 1371 | void (*init_hwif)(ide_hwif_t *); |
| 1372 | void (*init_dma)(ide_hwif_t *, unsigned long); |
| 1373 | void (*fixup)(ide_hwif_t *); |
| 1374 | u8 channels; |
| 1375 | u8 autodma; |
| 1376 | ide_pci_enablebit_t enablebits[2]; |
| 1377 | u8 bootable; |
| 1378 | unsigned int extra; |
| 1379 | struct ide_pci_device_s *next; |
| 1380 | u8 flags; |
| 1381 | } ide_pci_device_t; |
| 1382 | |
| 1383 | extern int ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *); |
| 1384 | extern int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_device_t *); |
| 1385 | |
| 1386 | void ide_map_sg(ide_drive_t *, struct request *); |
| 1387 | void ide_init_sg_cmd(ide_drive_t *, struct request *); |
| 1388 | |
| 1389 | #define BAD_DMA_DRIVE 0 |
| 1390 | #define GOOD_DMA_DRIVE 1 |
| 1391 | |
| 1392 | #ifdef CONFIG_BLK_DEV_IDEDMA |
| 1393 | int __ide_dma_bad_drive(ide_drive_t *); |
| 1394 | int __ide_dma_good_drive(ide_drive_t *); |
| 1395 | int ide_use_dma(ide_drive_t *); |
| 1396 | int __ide_dma_off(ide_drive_t *); |
| 1397 | void ide_dma_verbose(ide_drive_t *); |
| 1398 | ide_startstop_t ide_dma_intr(ide_drive_t *); |
| 1399 | |
| 1400 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
| 1401 | extern int ide_build_sglist(ide_drive_t *, struct request *); |
| 1402 | extern int ide_build_dmatable(ide_drive_t *, struct request *); |
| 1403 | extern void ide_destroy_dmatable(ide_drive_t *); |
| 1404 | extern int ide_release_dma(ide_hwif_t *); |
| 1405 | extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int); |
| 1406 | |
| 1407 | extern int __ide_dma_host_off(ide_drive_t *); |
| 1408 | extern int __ide_dma_off_quietly(ide_drive_t *); |
| 1409 | extern int __ide_dma_host_on(ide_drive_t *); |
| 1410 | extern int __ide_dma_on(ide_drive_t *); |
| 1411 | extern int __ide_dma_check(ide_drive_t *); |
| 1412 | extern int ide_dma_setup(ide_drive_t *); |
| 1413 | extern void ide_dma_start(ide_drive_t *); |
| 1414 | extern int __ide_dma_end(ide_drive_t *); |
| 1415 | extern int __ide_dma_lostirq(ide_drive_t *); |
| 1416 | extern int __ide_dma_timeout(ide_drive_t *); |
| 1417 | #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */ |
| 1418 | |
| 1419 | #else |
| 1420 | static inline int ide_use_dma(ide_drive_t *drive) { return 0; } |
| 1421 | static inline int __ide_dma_off(ide_drive_t *drive) { return 0; } |
| 1422 | static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
| 1423 | #endif /* CONFIG_BLK_DEV_IDEDMA */ |
| 1424 | |
| 1425 | #ifndef CONFIG_BLK_DEV_IDEDMA_PCI |
| 1426 | static inline void ide_release_dma(ide_hwif_t *drive) {;} |
| 1427 | #endif |
| 1428 | |
| 1429 | extern int ide_hwif_request_regions(ide_hwif_t *hwif); |
| 1430 | extern void ide_hwif_release_regions(ide_hwif_t* hwif); |
| 1431 | extern void ide_unregister (unsigned int index); |
| 1432 | |
| 1433 | void ide_register_region(struct gendisk *); |
| 1434 | void ide_unregister_region(struct gendisk *); |
| 1435 | |
| 1436 | void ide_undecoded_slave(ide_hwif_t *); |
| 1437 | |
| 1438 | int probe_hwif_init_with_fixup(ide_hwif_t *, void (*)(ide_hwif_t *)); |
| 1439 | extern int probe_hwif_init(ide_hwif_t *); |
| 1440 | |
| 1441 | static inline void *ide_get_hwifdata (ide_hwif_t * hwif) |
| 1442 | { |
| 1443 | return hwif->hwif_data; |
| 1444 | } |
| 1445 | |
| 1446 | static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) |
| 1447 | { |
| 1448 | hwif->hwif_data = data; |
| 1449 | } |
| 1450 | |
| 1451 | /* ide-lib.c */ |
| 1452 | extern u8 ide_dma_speed(ide_drive_t *drive, u8 mode); |
| 1453 | extern u8 ide_rate_filter(u8 mode, u8 speed); |
| 1454 | extern int ide_dma_enable(ide_drive_t *drive); |
| 1455 | extern char *ide_xfer_verbose(u8 xfer_rate); |
| 1456 | extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
| 1457 | extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate); |
| 1458 | |
| 1459 | u8 ide_dump_status(ide_drive_t *, const char *, u8); |
| 1460 | |
| 1461 | typedef struct ide_pio_timings_s { |
| 1462 | int setup_time; /* Address setup (ns) minimum */ |
| 1463 | int active_time; /* Active pulse (ns) minimum */ |
| 1464 | int cycle_time; /* Cycle time (ns) minimum = (setup + active + recovery) */ |
| 1465 | } ide_pio_timings_t; |
| 1466 | |
| 1467 | typedef struct ide_pio_data_s { |
| 1468 | u8 pio_mode; |
| 1469 | u8 use_iordy; |
| 1470 | u8 overridden; |
| 1471 | u8 blacklisted; |
| 1472 | unsigned int cycle_time; |
| 1473 | } ide_pio_data_t; |
| 1474 | |
| 1475 | extern u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d); |
| 1476 | extern const ide_pio_timings_t ide_pio_timings[6]; |
| 1477 | |
| 1478 | |
| 1479 | extern spinlock_t ide_lock; |
| 1480 | extern struct semaphore ide_cfg_sem; |
| 1481 | /* |
| 1482 | * Structure locking: |
| 1483 | * |
| 1484 | * ide_cfg_sem and ide_lock together protect changes to |
| 1485 | * ide_hwif_t->{next,hwgroup} |
| 1486 | * ide_drive_t->next |
| 1487 | * |
| 1488 | * ide_hwgroup_t->busy: ide_lock |
| 1489 | * ide_hwgroup_t->hwif: ide_lock |
| 1490 | * ide_hwif_t->mate: constant, no locking |
| 1491 | * ide_drive_t->hwif: constant, no locking |
| 1492 | */ |
| 1493 | |
| 1494 | #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable(); } while (0) |
| 1495 | |
| 1496 | extern struct bus_type ide_bus_type; |
| 1497 | |
| 1498 | /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */ |
| 1499 | #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000) |
| 1500 | |
| 1501 | /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */ |
| 1502 | #define ide_id_has_flush_cache_ext(id) \ |
| 1503 | (((id)->cfs_enable_2 & 0x2400) == 0x2400) |
| 1504 | |
Christoph Lameter | 86b3786 | 2005-08-09 19:59:21 -0700 | [diff] [blame] | 1505 | static inline int hwif_to_node(ide_hwif_t *hwif) |
| 1506 | { |
| 1507 | struct pci_dev *dev = hwif->pci_dev; |
| 1508 | return dev ? pcibus_to_node(dev->bus) : -1; |
| 1509 | } |
| 1510 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | #endif /* _IDE_H */ |