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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/init.h>
10#include <linux/ioport.h>
Bartlomiej Zolnierkiewicz3ceca722008-10-10 22:39:27 +020011#include <linux/ata.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/blkdev.h>
13#include <linux/proc_fs.h>
14#include <linux/interrupt.h>
15#include <linux/bitops.h>
16#include <linux/bio.h>
17#include <linux/device.h>
18#include <linux/pci.h>
Aleksey Makarovf36d4022006-01-09 15:59:27 -080019#include <linux/completion.h>
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +020020#include <linux/pm.h>
Hannes Reineckee3a59b42007-02-07 18:19:37 +010021#ifdef CONFIG_BLK_DEV_IDEACPI
22#include <acpi/acpi.h>
23#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <asm/byteorder.h>
25#include <asm/system.h>
26#include <asm/io.h>
Matthias Kaehlckef9383c42007-07-09 23:17:56 +020027#include <asm/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Bartlomiej Zolnierkiewicz729d4de2008-03-29 19:55:17 +010029#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010030# define SUPPORT_VLB_SYNC 0
31#else
32# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#endif
34
35/*
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
37 * number.
38 */
39
40#define IDE_NO_IRQ (-1)
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042typedef unsigned char byte; /* used everywhere */
43
44/*
45 * Probably not wise to fiddle with these
46 */
47#define ERROR_MAX 8 /* Max read/write errors per sector */
48#define ERROR_RESET 3 /* Reset controller every 4th retry */
49#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
50
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
52#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
53
54/*
55 * Definitions for accessing IDE controller registers
56 */
57#define IDE_NR_PORTS (10)
58
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020059struct ide_io_ports {
60 unsigned long data_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020062 union {
63 unsigned long error_addr; /* read: error */
64 unsigned long feature_addr; /* write: feature */
65 };
66
67 unsigned long nsect_addr;
68 unsigned long lbal_addr;
69 unsigned long lbam_addr;
70 unsigned long lbah_addr;
71
72 unsigned long device_addr;
73
74 union {
75 unsigned long status_addr; /*  read: status  */
76 unsigned long command_addr; /* write: command */
77 };
78
79 unsigned long ctl_addr;
80
81 unsigned long irq_addr;
82};
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
84#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +020086#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
87#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
88#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
89#define DRIVE_READY (ATA_DRDY | ATA_DSC)
90
91#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93#define SATA_NR_PORTS (3) /* 16 possible ?? */
94
95#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070097#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
Linus Torvalds1da177e2005-04-16 15:20:36 -070099/*
100 * Our Physical Region Descriptor (PRD) table should be large enough
101 * to handle the biggest I/O request we are likely to see. Since requests
102 * can have no more than 256 sectors, and since the typical blocksize is
103 * two or more sectors, we could get by with a limit of 128 entries here for
104 * the usual worst case. Most requests seem to include some contiguous blocks,
105 * further reducing the number of table entries required.
106 *
107 * The driver reverts to PIO mode for individual requests that exceed
108 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
109 * 100% of all crazy scenarios here is not necessary.
110 *
111 * As it turns out though, we must allocate a full 4KB page for this,
112 * so the two PRD tables (ide0 & ide1) will each get half of that,
113 * allowing each to have about 256 entries (8 bytes each) from this.
114 */
115#define PRD_BYTES 8
116#define PRD_ENTRIES 256
117
118/*
119 * Some more useful definitions
120 */
121#define PARTN_BITS 6 /* number of minor dev bits for partitions */
122#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
123#define SECTOR_SIZE 512
Bartlomiej Zolnierkiewicz151a6702008-10-10 22:39:28 +0200124
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
126
127/*
128 * Timeouts for various operations:
129 */
Bartlomiej Zolnierkiewiczd6e29552008-10-10 22:39:39 +0200130enum {
131 /* spec allows up to 20ms */
132 WAIT_DRQ = HZ / 10, /* 100ms */
133 /* some laptops are very slow */
134 WAIT_READY = 5 * HZ, /* 5s */
135 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
136 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
137 /* worst case when spinning up */
138 WAIT_WORSTCASE = 30 * HZ, /* 30s */
139 /* maximum wait for an IRQ to happen */
140 WAIT_CMD = 10 * HZ, /* 10s */
141 /* Some drives require a longer IRQ timeout. */
142 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
143 /*
144 * Some drives (for example, Seagate STT3401A Travan) require a very
145 * long timeout, because they don't return an interrupt or clear their
146 * BSY bit until after the command completes (even retension commands).
147 */
148 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
149 /* minimum sleep time */
150 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
151};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153/*
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200154 * Op codes for special requests to be handled by ide_special_rq().
155 * Values should be in the range of 0x20 to 0x3f.
156 */
157#define REQ_DRIVE_RESET 0x20
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200158#define REQ_DEVSET_EXEC 0x21
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200159#define REQ_PARK_HEADS 0x22
160#define REQ_UNPARK_HEADS 0x23
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200161
162/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 * Check for an interrupt and acknowledge the interrupt status
164 */
165struct hwif_s;
166typedef int (ide_ack_intr_t)(struct hwif_s *);
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168/*
169 * hwif_chipset_t is used to keep track of the specific hardware
170 * chipset used by each IDE interface, if known.
171 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200172enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 ide_cmd640, ide_dtc2278, ide_ali14xx,
174 ide_qd65xx, ide_umc8672, ide_ht6560b,
175 ide_rz1000, ide_trm290,
176 ide_cmd646, ide_cy82c693, ide_4drives,
Adrian Bunkb7691642008-06-10 20:56:36 +0200177 ide_pmac, ide_acorn,
Bartlomiej Zolnierkiewicz9a0e77f2008-04-18 00:46:24 +0200178 ide_au1xxx, ide_palm3710
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200179};
180
181typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
183/*
184 * Structure to hold all information about the location of this port
185 */
186typedef struct hw_regs_s {
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200187 union {
188 struct ide_io_ports io_ports;
189 unsigned long io_ports_array[IDE_NR_PORTS];
190 };
191
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
194 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewiczc56c5642008-07-16 20:33:40 +0200195 struct device *dev, *parent;
Bartlomiej Zolnierkiewiczd6276b52008-07-23 19:55:56 +0200196 unsigned long config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197} hw_regs_t;
198
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100199void ide_init_port_data(struct hwif_s *, unsigned int);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100200void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202static inline void ide_std_init_ports(hw_regs_t *hw,
203 unsigned long io_addr,
204 unsigned long ctl_addr)
205{
206 unsigned int i;
207
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200208 for (i = 0; i <= 7; i++)
209 hw->io_ports_array[i] = io_addr++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200211 hw->io_ports.ctl_addr = ctl_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212}
213
Bartlomiej Zolnierkiewicza861beb2008-07-08 19:27:22 +0200214/* for IDE PCI controllers in legacy mode, temporary */
215static inline int __ide_default_irq(unsigned long base)
216{
217 switch (base) {
218#ifdef CONFIG_IA64
219 case 0x1f0: return isa_irq_to_vector(14);
220 case 0x170: return isa_irq_to_vector(15);
221#else
222 case 0x1f0: return 14;
223 case 0x170: return 15;
224#endif
225 }
226 return 0;
227}
228
Bartlomiej Zolnierkiewicz2a8f7452008-07-24 22:53:31 +0200229#if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
230 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
231 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232#include <asm/ide.h>
Bartlomiej Zolnierkiewicz2a8f7452008-07-24 22:53:31 +0200233#else
234#include <asm-generic/ide_iops.h>
235#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Adrian Bunkc5bfc372008-08-05 18:17:01 +0200237#define MAX_HWIFS 10
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239/* Currently only m68k, apus and m8xx need it */
240#ifndef IDE_ARCH_ACK_INTR
241# define ide_ack_intr(hwif) (1)
242#endif
243
244/* Currently only Atari needs it */
245#ifndef IDE_ARCH_LOCK
246# define ide_release_lock() do {} while (0)
247# define ide_get_lock(hdlr, data) do {} while (0)
248#endif /* IDE_ARCH_LOCK */
249
250/*
251 * Now for the data we need to maintain per-drive: ide_drive_t
252 */
253
254#define ide_scsi 0x21
255#define ide_disk 0x20
256#define ide_optical 0x7
257#define ide_cdrom 0x5
258#define ide_tape 0x1
259#define ide_floppy 0x0
260
261/*
262 * Special Driver Flags
263 *
264 * set_geometry : respecify drive geometry
265 * recalibrate : seek to cyl 0
266 * set_multmode : set multmode count
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 * reserved : unused
268 */
269typedef union {
270 unsigned all : 8;
271 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 unsigned set_geometry : 1;
273 unsigned recalibrate : 1;
274 unsigned set_multmode : 1;
Bartlomiej Zolnierkiewicz6982daf2008-10-13 21:39:40 +0200275 unsigned reserved : 5;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 } b;
277} special_t;
278
279/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 * Status returned from various ide_ functions
281 */
282typedef enum {
283 ide_stopped, /* no drive operation was started */
284 ide_started, /* a drive operation was started, handler was set */
285} ide_startstop_t;
286
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200287enum {
288 IDE_TFLAG_LBA48 = (1 << 0),
289 IDE_TFLAG_FLAGGED = (1 << 2),
290 IDE_TFLAG_OUT_DATA = (1 << 3),
291 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
292 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
293 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
294 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
295 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
296 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
297 IDE_TFLAG_OUT_HOB_NSECT |
298 IDE_TFLAG_OUT_HOB_LBAL |
299 IDE_TFLAG_OUT_HOB_LBAM |
300 IDE_TFLAG_OUT_HOB_LBAH,
301 IDE_TFLAG_OUT_FEATURE = (1 << 9),
302 IDE_TFLAG_OUT_NSECT = (1 << 10),
303 IDE_TFLAG_OUT_LBAL = (1 << 11),
304 IDE_TFLAG_OUT_LBAM = (1 << 12),
305 IDE_TFLAG_OUT_LBAH = (1 << 13),
306 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
307 IDE_TFLAG_OUT_NSECT |
308 IDE_TFLAG_OUT_LBAL |
309 IDE_TFLAG_OUT_LBAM |
310 IDE_TFLAG_OUT_LBAH,
311 IDE_TFLAG_OUT_DEVICE = (1 << 14),
312 IDE_TFLAG_WRITE = (1 << 15),
313 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
314 IDE_TFLAG_IN_DATA = (1 << 17),
315 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
316 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
317 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
318 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
319 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
320 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
321 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
322 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
323 IDE_TFLAG_IN_HOB_LBAM |
324 IDE_TFLAG_IN_HOB_LBAH,
325 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
326 IDE_TFLAG_IN_HOB_NSECT |
327 IDE_TFLAG_IN_HOB_LBA,
328 IDE_TFLAG_IN_FEATURE = (1 << 1),
329 IDE_TFLAG_IN_NSECT = (1 << 25),
330 IDE_TFLAG_IN_LBAL = (1 << 26),
331 IDE_TFLAG_IN_LBAM = (1 << 27),
332 IDE_TFLAG_IN_LBAH = (1 << 28),
333 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
334 IDE_TFLAG_IN_LBAM |
335 IDE_TFLAG_IN_LBAH,
336 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
337 IDE_TFLAG_IN_LBA,
338 IDE_TFLAG_IN_DEVICE = (1 << 29),
339 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
340 IDE_TFLAG_IN_HOB,
341 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
342 IDE_TFLAG_IN_TF,
343 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
344 IDE_TFLAG_IN_DEVICE,
345 /* force 16-bit I/O operations */
346 IDE_TFLAG_IO_16BIT = (1 << 30),
347 /* ide_task_t was allocated using kmalloc() */
348 IDE_TFLAG_DYN = (1 << 31),
349};
350
351struct ide_taskfile {
352 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
353
354 u8 hob_feature; /* 1-5: additional data to support LBA48 */
355 u8 hob_nsect;
356 u8 hob_lbal;
357 u8 hob_lbam;
358 u8 hob_lbah;
359
360 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
361
362 union { /*  7: */
363 u8 error; /* read: error */
364 u8 feature; /* write: feature */
365 };
366
367 u8 nsect; /* 8: number of sectors */
368 u8 lbal; /* 9: LBA low */
369 u8 lbam; /* 10: LBA mid */
370 u8 lbah; /* 11: LBA high */
371
372 u8 device; /* 12: device select */
373
374 union { /* 13: */
375 u8 status; /*  read: status  */
376 u8 command; /* write: command */
377 };
378};
379
380typedef struct ide_task_s {
381 union {
382 struct ide_taskfile tf;
383 u8 tf_array[14];
384 };
385 u32 tf_flags;
386 int data_phase;
387 struct request *rq; /* copy of request */
388 void *special; /* valid_t generally */
389} ide_task_t;
390
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200391/* ATAPI packet command flags */
392enum {
393 /* set when an error is considered normal - no retry (ide-tape) */
394 PC_FLAG_ABORT = (1 << 0),
395 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
396 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
397 PC_FLAG_DMA_OK = (1 << 3),
398 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
399 PC_FLAG_DMA_ERROR = (1 << 5),
400 PC_FLAG_WRITING = (1 << 6),
401 /* command timed out */
402 PC_FLAG_TIMEDOUT = (1 << 7),
403};
404
405/*
406 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
407 * This is used for several packet commands (not for READ/WRITE commands).
408 */
409#define IDE_PC_BUFFER_SIZE 256
410
411struct ide_atapi_pc {
412 /* actual packet bytes */
413 u8 c[12];
414 /* incremented on each retry */
415 int retries;
416 int error;
417
418 /* bytes to transfer */
419 int req_xfer;
420 /* bytes actually transferred */
421 int xferred;
422
423 /* data buffer */
424 u8 *buf;
425 /* current buffer position */
426 u8 *cur_pos;
427 int buf_size;
428 /* missing/available data on the current buffer */
429 int b_count;
430
431 /* the corresponding request */
432 struct request *rq;
433
434 unsigned long flags;
435
436 /*
437 * those are more or less driver-specific and some of them are subject
438 * to change/removal later.
439 */
440 u8 pc_buf[IDE_PC_BUFFER_SIZE];
441
442 /* idetape only */
443 struct idetape_bh *bh;
444 char *b_data;
445
446 /* idescsi only for now */
447 struct scatterlist *sg;
448 unsigned int sg_cnt;
449
450 struct scsi_cmnd *scsi_cmd;
451 void (*done) (struct scsi_cmnd *);
452
453 unsigned long timeout;
454};
455
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200456struct ide_devset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457struct ide_driver_s;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100459#ifdef CONFIG_BLK_DEV_IDEACPI
460struct ide_acpi_drive_link;
461struct ide_acpi_hwif_link;
462#endif
463
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200464struct ide_drive_s;
465
466struct ide_disk_ops {
467 int (*check)(struct ide_drive_s *, const char *);
468 int (*get_capacity)(struct ide_drive_s *);
469 void (*setup)(struct ide_drive_s *);
470 void (*flush)(struct ide_drive_s *);
471 int (*init_media)(struct ide_drive_s *, struct gendisk *);
472 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
473 int);
474 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
475 sector_t);
476 int (*end_request)(struct ide_drive_s *, int, int);
Al Virobadf8082008-10-16 10:23:20 -0400477 int (*ioctl)(struct ide_drive_s *, struct block_device *,
478 fmode_t, unsigned int, unsigned long);
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200479};
480
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200481/* ATAPI device flags */
482enum {
483 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200484
485 /* ide-cd */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200486 /* Drive cannot eject the disc. */
487 IDE_AFLAG_NO_EJECT = (1 << 3),
488 /* Drive is a pre ATAPI 1.2 drive. */
489 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
490 /* TOC addresses are in BCD. */
491 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
492 /* TOC track numbers are in BCD. */
493 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
494 /*
495 * Drive does not provide data in multiples of SECTOR_SIZE
496 * when more than one interrupt is needed.
497 */
498 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
499 /* Seeking in progress. */
500 IDE_AFLAG_SEEKING = (1 << 8),
501 /* Saved TOC information is current. */
502 IDE_AFLAG_TOC_VALID = (1 << 9),
503 /* We think that the drive door is locked. */
504 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
505 /* SET_CD_SPEED command is unsupported. */
506 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
507 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
508 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
509 IDE_AFLAG_SANYO_3CD = (1 << 14),
510 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
511 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
512 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
513
514 /* ide-floppy */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200515 /* Avoid commands not supported in Clik drive */
516 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
517 /* Requires BH algorithm for packets */
518 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200519 /* Supports format progress report */
520 IDE_AFLAG_SRFP = (1 << 22),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200521
522 /* ide-tape */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200523 IDE_AFLAG_IGNORE_DSC = (1 << 23),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200524 /* 0 When the tape position is unknown */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200525 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200526 /* Device already opened */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200527 IDE_AFLAG_BUSY = (1 << 25),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200528 /* Attempt to auto-detect the current user block size */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200529 IDE_AFLAG_DETECT_BS = (1 << 26),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200530 /* Currently on a filemark */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200531 IDE_AFLAG_FILEMARK = (1 << 27),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200532 /* 0 = no tape is loaded, so we don't rewind after ejecting */
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200533 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
Borislav Petkovf20f2582008-10-05 18:23:27 +0200534
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200535 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200536};
537
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200538/* device flags */
539enum {
540 /* restore settings after device reset */
541 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
542 /* device is using DMA for read/write */
543 IDE_DFLAG_USING_DMA = (1 << 1),
544 /* okay to unmask other IRQs */
545 IDE_DFLAG_UNMASK = (1 << 2),
546 /* don't attempt flushes */
547 IDE_DFLAG_NOFLUSH = (1 << 3),
548 /* DSC overlap */
549 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
550 /* give potential excess bandwidth */
551 IDE_DFLAG_NICE1 = (1 << 5),
552 /* device is physically present */
553 IDE_DFLAG_PRESENT = (1 << 6),
554 /* device ejected hint */
555 IDE_DFLAG_DEAD = (1 << 7),
556 /* id read from device (synthetic if not set) */
557 IDE_DFLAG_ID_READ = (1 << 8),
558 IDE_DFLAG_NOPROBE = (1 << 9),
559 /* need to do check_media_change() */
560 IDE_DFLAG_REMOVABLE = (1 << 10),
561 /* needed for removable devices */
562 IDE_DFLAG_ATTACH = (1 << 11),
563 IDE_DFLAG_FORCED_GEOM = (1 << 12),
564 /* disallow setting unmask bit */
565 IDE_DFLAG_NO_UNMASK = (1 << 13),
566 /* disallow enabling 32-bit I/O */
567 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
568 /* for removable only: door lock/unlock works */
569 IDE_DFLAG_DOORLOCKING = (1 << 15),
570 /* disallow DMA */
571 IDE_DFLAG_NODMA = (1 << 16),
572 /* powermanagment told us not to do anything, so sleep nicely */
573 IDE_DFLAG_BLOCKED = (1 << 17),
574 /* ide-scsi emulation */
575 IDE_DFLAG_SCSI = (1 << 18),
576 /* sleeping & sleep field valid */
577 IDE_DFLAG_SLEEPING = (1 << 19),
578 IDE_DFLAG_POST_RESET = (1 << 20),
579 IDE_DFLAG_UDMA33_WARNED = (1 << 21),
580 IDE_DFLAG_LBA48 = (1 << 22),
581 /* status of write cache */
582 IDE_DFLAG_WCACHE = (1 << 23),
583 /* used for ignoring ATA_DF */
584 IDE_DFLAG_NOWERR = (1 << 24),
Bartlomiej Zolnierkiewiczc3922042008-10-13 21:39:37 +0200585 /* retrying in PIO */
586 IDE_DFLAG_DMA_PIO_RETRY = (1 << 25),
Bartlomiej Zolnierkiewiczd1d76712008-10-13 21:39:38 +0200587 IDE_DFLAG_LBA = (1 << 26),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200588 /* don't unload heads */
589 IDE_DFLAG_NO_UNLOAD = (1 << 27),
590 /* heads unloaded, please don't reset port */
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +0200591 IDE_DFLAG_PARKED = (1 << 28),
592 IDE_DFLAG_MEDIA_CHANGED = (1 << 29),
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200593 /* write protect */
594 IDE_DFLAG_WP = (1 << 30),
Bartlomiej Zolnierkiewicze0128622008-10-17 18:09:11 +0200595 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 31),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200596};
597
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200598struct ide_drive_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 char name[4]; /* drive name, such as "hda" */
600 char driver_req[10]; /* requests specific driver */
601
Jens Axboe165125e2007-07-24 09:28:11 +0200602 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603
604 struct request *rq; /* current request */
605 struct ide_drive_s *next; /* circular list of hwgroup drives */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 void *driver_data; /* extra driver data */
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200607 u16 *id; /* identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200608#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200610 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200611#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
613
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200614 const struct ide_disk_ops *disk_ops;
615
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200616 unsigned long dev_flags;
617
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 unsigned long sleep; /* sleep until this time */
619 unsigned long service_start; /* time we started last request */
620 unsigned long service_time; /* service time of last request */
621 unsigned long timeout; /* max time to wait for irq */
622
623 special_t special; /* special action flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
Bartlomiej Zolnierkiewicz7f612f22008-10-13 21:39:40 +0200625 u8 select; /* basic drive/head select reg value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 u8 retry_pio; /* retrying dma capable host in pio */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 u8 waiting_for_dma; /* dma currently in progress */
Borislav Petkov0a9b6f82008-10-13 21:39:49 +0200628 u8 dma; /* atapi dma flag */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 u8 quirk_list; /* considered quirky, set for a specific host */
631 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200633 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 u8 dn; /* now wide spread use */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 u8 acoustic; /* acoustic management */
636 u8 media; /* disk, cdrom, tape, floppy, ... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 u8 ready_stat; /* min status value for drive ready */
638 u8 mult_count; /* current multiple sector setting */
639 u8 mult_req; /* requested multiple sector setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200641 u8 bad_wstat; /* used for ignoring ATA_DF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 u8 head; /* "real" number of heads */
643 u8 sect; /* "real" sectors per track */
644 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
645 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
646
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200647 /* delay this long before sending packet command */
648 u8 pc_delay;
649
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
651 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200652 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 unsigned int failures; /* current failure count */
654 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700655 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656
657 u64 capacity64; /* total number of sectors */
658
659 int lun; /* logical unit */
660 int crc_count; /* crc counter to reduce drive speed */
Borislav Petkovb22b2ca2008-10-13 21:39:34 +0200661
662 unsigned long debug_mask; /* debugging levels switch */
663
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100664#ifdef CONFIG_BLK_DEV_IDEACPI
665 struct ide_acpi_drive_link *acpidata;
666#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 struct list_head list;
668 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800669 struct completion gendev_rel_comp; /* to deal with device release() */
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200670
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200671 /* current packet command */
672 struct ide_atapi_pc *pc;
673
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200674 /* callback for packet commands */
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200675 void (*pc_callback)(struct ide_drive_s *, int);
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200676
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200677 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
678 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
679 unsigned int, int);
680
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200681 unsigned long atapi_flags;
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200682
683 struct ide_atapi_pc request_sense_pc;
684 struct request request_sense_rq;
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200685};
686
687typedef struct ide_drive_s ide_drive_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200689#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
690
691#define to_ide_drv(obj, cont_type) \
692 container_of(obj, struct cont_type, kref)
693
694#define ide_drv_g(disk, cont_type) \
695 container_of((disk)->private_data, struct cont_type, driver)
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200696
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200697struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200699struct ide_tp_ops {
700 void (*exec_command)(struct hwif_s *, u8);
701 u8 (*read_status)(struct hwif_s *);
702 u8 (*read_altstatus)(struct hwif_s *);
703 u8 (*read_sff_dma_status)(struct hwif_s *);
704
705 void (*set_irq)(struct hwif_s *, int);
706
707 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
708 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
709
710 void (*input_data)(ide_drive_t *, struct request *, void *,
711 unsigned int);
712 void (*output_data)(ide_drive_t *, struct request *, void *,
713 unsigned int);
714};
715
716extern const struct ide_tp_ops default_tp_ops;
717
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200718/**
719 * struct ide_port_ops - IDE port operations
720 *
721 * @init_dev: host specific initialization of a device
722 * @set_pio_mode: routine to program host for PIO mode
723 * @set_dma_mode: routine to program host for DMA mode
724 * @selectproc: tweaks hardware to select drive
725 * @reset_poll: chipset polling based on hba specifics
726 * @pre_reset: chipset specific changes to default for device-hba resets
727 * @resetproc: routine to reset controller after a disk reset
728 * @maskproc: special host masking for drive selection
729 * @quirkproc: check host's drive quirk list
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200730 * @clear_irq: clear IRQ
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200731 *
732 * @mdma_filter: filter MDMA modes
733 * @udma_filter: filter UDMA modes
734 *
735 * @cable_detect: detect cable type
736 */
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200737struct ide_port_ops {
Bartlomiej Zolnierkiewicze6d95bd2008-07-16 20:33:42 +0200738 void (*init_dev)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200739 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200740 void (*set_dma_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200741 void (*selectproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200742 int (*reset_poll)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200743 void (*pre_reset)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200744 void (*resetproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200745 void (*maskproc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200746 void (*quirkproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200747 void (*clear_irq)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200748
749 u8 (*mdma_filter)(ide_drive_t *);
750 u8 (*udma_filter)(ide_drive_t *);
751
752 u8 (*cable_detect)(struct hwif_s *);
753};
754
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200755struct ide_dma_ops {
756 void (*dma_host_set)(struct ide_drive_s *, int);
757 int (*dma_setup)(struct ide_drive_s *);
758 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
759 void (*dma_start)(struct ide_drive_s *);
760 int (*dma_end)(struct ide_drive_s *);
761 int (*dma_test_irq)(struct ide_drive_s *);
762 void (*dma_lost_irq)(struct ide_drive_s *);
763 void (*dma_timeout)(struct ide_drive_s *);
764};
765
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200766struct ide_host;
767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768typedef struct hwif_s {
769 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
770 struct hwif_s *mate; /* other hwif from same PCI chip */
771 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
772 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
773
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200774 struct ide_host *host;
775
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 char name[6]; /* name of interface, eg. "ide0" */
777
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200778 struct ide_io_ports io_ports;
779
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 ide_drive_t drives[MAX_DRIVES]; /* drive info */
783
784 u8 major; /* our major number */
785 u8 index; /* 0 for ide0; 1 for ide1; ... */
786 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787
David Millere95d9c62007-10-22 02:09:00 -0700788 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200789
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200790 u8 pio_mask;
791
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 u8 ultra_mask;
793 u8 mwdma_mask;
794 u8 swdma_mask;
795
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200796 u8 cbl; /* cable type */
797
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 hwif_chipset_t chipset; /* sub-module for tuning.. */
799
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100800 struct device *dev;
801
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200802 ide_ack_intr_t *ack_intr;
803
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 void (*rw_disk)(ide_drive_t *, struct request *);
805
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200806 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200807 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200808 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100809
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 /* dma physical region descriptor table (cpu view) */
811 unsigned int *dmatable_cpu;
812 /* dma physical region descriptor table (dma view) */
813 dma_addr_t dmatable_dma;
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200814
815 /* maximum number of PRD table entries */
816 int prd_max_nents;
817 /* PRD entry size in bytes */
818 int prd_ent_size;
819
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 /* Scatter-gather list used to build the above */
821 struct scatterlist *sg_table;
822 int sg_max_nents; /* Maximum number of entries in it */
823 int sg_nents; /* Current number of entries in it */
824 int sg_dma_direction; /* dma transfer direction */
825
826 /* data phase of the active command (currently only valid for PIO/DMA) */
827 int data_phase;
828
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200829 struct ide_task_s task; /* current command */
830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 unsigned int nsect;
832 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200833 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 unsigned int cursg_ofs;
835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 int rqsize; /* max sectors per request */
837 int irq; /* our irq number */
838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 unsigned long dma_base; /* base addr for dma ports */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 unsigned long config_data; /* for use by chipset-specific code */
842 unsigned long select_data; /* for use by chipset-specific code */
843
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700844 unsigned long extra_base; /* extra addr for dma ports */
845 unsigned extra_ports; /* number of extra dma ports */
846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 unsigned present : 1; /* this interface exists */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 unsigned serialized : 1; /* serialized all channel operation */
849 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
851
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200852 struct device gendev;
853 struct device *portdev;
854
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800855 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856
857 void *hwif_data; /* extra hwif data */
858
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100859#ifdef CONFIG_BLK_DEV_IDEACPI
860 struct ide_acpi_hwif_link *acpidata;
861#endif
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800862} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
Bartlomiej Zolnierkiewicza36223b2008-10-13 21:39:43 +0200864#define MAX_HOST_PORTS 4
865
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200866struct ide_host {
Bartlomiej Zolnierkiewicza36223b2008-10-13 21:39:43 +0200867 ide_hwif_t *ports[MAX_HOST_PORTS];
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200868 unsigned int n_ports;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200869 struct device *dev[2];
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200870 unsigned int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +0200871 unsigned long host_flags;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200872 void *host_priv;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200873};
874
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875/*
876 * internal ide interrupt handler type
877 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
879typedef int (ide_expiry_t)(ide_drive_t *);
880
Borislav Petkov0eea6452008-02-02 19:56:36 +0100881/* used by ide-cd, ide-floppy, etc. */
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200882typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
Borislav Petkov0eea6452008-02-02 19:56:36 +0100883
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884typedef struct hwgroup_s {
885 /* irq handler, if active */
886 ide_startstop_t (*handler)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100887
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 /* BOOL: protects all fields below */
889 volatile int busy;
890 /* BOOL: wake us up on timer expiry */
891 unsigned int sleeping : 1;
892 /* BOOL: polling active & poll_timeout field valid */
893 unsigned int polling : 1;
Alan Cox913759a2006-10-03 01:14:33 -0700894
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 /* current drive */
896 ide_drive_t *drive;
897 /* ptr to current hwif in linked-list */
898 ide_hwif_t *hwif;
899
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 /* current request */
901 struct request *rq;
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 /* failsafe timer */
904 struct timer_list timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 /* timeout value during long polls */
906 unsigned long poll_timeout;
907 /* queried upon timeouts */
908 int (*expiry)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100909
Suleiman Souhlal23450312007-04-10 22:38:37 +0200910 int req_gen;
911 int req_gen_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912} ide_hwgroup_t;
913
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200914typedef struct ide_driver_s ide_driver_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200916extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200917
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200918/*
919 * configurable drive settings
920 */
921
922#define DS_SYNC (1 << 0)
923
924struct ide_devset {
925 int (*get)(ide_drive_t *);
926 int (*set)(ide_drive_t *, int);
927 unsigned int flags;
928};
929
930#define __DEVSET(_flags, _get, _set) { \
931 .flags = _flags, \
932 .get = _get, \
933 .set = _set, \
934}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200935
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200936#define ide_devset_get(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200937static int get_##name(ide_drive_t *drive) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200938{ \
939 return drive->field; \
940}
941
942#define ide_devset_set(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200943static int set_##name(ide_drive_t *drive, int arg) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200944{ \
945 drive->field = arg; \
946 return 0; \
947}
948
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200949#define ide_devset_get_flag(name, flag) \
950static int get_##name(ide_drive_t *drive) \
951{ \
952 return !!(drive->dev_flags & flag); \
953}
954
955#define ide_devset_set_flag(name, flag) \
956static int set_##name(ide_drive_t *drive, int arg) \
957{ \
958 if (arg) \
959 drive->dev_flags |= flag; \
960 else \
961 drive->dev_flags &= ~flag; \
962 return 0; \
963}
964
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200965#define __IDE_DEVSET(_name, _flags, _get, _set) \
966const struct ide_devset ide_devset_##_name = \
967 __DEVSET(_flags, _get, _set)
968
969#define IDE_DEVSET(_name, _flags, _get, _set) \
970static __IDE_DEVSET(_name, _flags, _get, _set)
971
972#define ide_devset_rw(_name, _func) \
973IDE_DEVSET(_name, 0, get_##_func, set_##_func)
974
975#define ide_devset_w(_name, _func) \
976IDE_DEVSET(_name, 0, NULL, set_##_func)
977
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200978#define ide_ext_devset_rw(_name, _func) \
979__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
980
981#define ide_ext_devset_rw_sync(_name, _func) \
982__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200983
984#define ide_decl_devset(_name) \
985extern const struct ide_devset ide_devset_##_name
986
987ide_decl_devset(io_32bit);
988ide_decl_devset(keepsettings);
989ide_decl_devset(pio_mode);
990ide_decl_devset(unmaskirq);
991ide_decl_devset(using_dma);
992
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200993#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 * /proc/ide interface
996 */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200997
998#define ide_devset_rw_field(_name, _field) \
999ide_devset_get(_name, _field); \
1000ide_devset_set(_name, _field); \
1001IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
1002
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +02001003#define ide_devset_rw_flag(_name, _field) \
1004ide_devset_get_flag(_name, _field); \
1005ide_devset_set_flag(_name, _field); \
1006IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
1007
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001008struct ide_proc_devset {
1009 const char *name;
1010 const struct ide_devset *setting;
1011 int min, max;
1012 int (*mulf)(ide_drive_t *);
1013 int (*divf)(ide_drive_t *);
1014};
1015
1016#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
1017 .name = __stringify(_name), \
1018 .setting = &ide_devset_##_name, \
1019 .min = _min, \
1020 .max = _max, \
1021 .mulf = _mulf, \
1022 .divf = _divf, \
1023}
1024
1025#define IDE_PROC_DEVSET(_name, _min, _max) \
1026__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1027
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028typedef struct {
1029 const char *name;
1030 mode_t mode;
1031 read_proc_t *read_proc;
1032 write_proc_t *write_proc;
1033} ide_proc_entry_t;
1034
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001035void proc_ide_create(void);
1036void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001037void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +01001038void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +02001039void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001040void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001041void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
1042void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
1043
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044read_proc_t proc_ide_read_capacity;
1045read_proc_t proc_ide_read_geometry;
1046
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047/*
1048 * Standard exit stuff:
1049 */
1050#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1051{ \
1052 len -= off; \
1053 if (len < count) { \
1054 *eof = 1; \
1055 if (len <= 0) \
1056 return 0; \
1057 } else \
1058 len = count; \
1059 *start = page + off; \
1060 return len; \
1061}
1062#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001063static inline void proc_ide_create(void) { ; }
1064static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001065static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +01001066static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +02001067static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001068static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001069static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1070static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1072#endif
1073
Borislav Petkove1c7c462008-10-13 21:39:35 +02001074enum {
1075 /* enter/exit functions */
1076 IDE_DBG_FUNC = (1 << 0),
1077 /* sense key/asc handling */
1078 IDE_DBG_SENSE = (1 << 1),
1079 /* packet commands handling */
1080 IDE_DBG_PC = (1 << 2),
1081 /* request handling */
1082 IDE_DBG_RQ = (1 << 3),
1083 /* driver probing/setup */
1084 IDE_DBG_PROBE = (1 << 4),
1085};
1086
1087/* DRV_NAME has to be defined in the driver before using the macro below */
1088#define __ide_debug_log(lvl, fmt, args...) \
1089{ \
1090 if (unlikely(drive->debug_mask & lvl)) \
1091 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1092}
1093
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094/*
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001095 * Power Management state machine (rq->pm->pm_step).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001097 * For each step, the core calls ide_start_power_step() first.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 * This can return:
1099 * - ide_stopped : In this case, the core calls us back again unless
1100 * step have been set to ide_power_state_completed.
1101 * - ide_started : In this case, the channel is left busy until an
1102 * async event (interrupt) occurs.
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001103 * Typically, ide_start_power_step() will issue a taskfile request with
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104 * do_rw_taskfile().
1105 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001106 * Upon reception of the interrupt, the core will call ide_complete_power_step()
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 * with the error code if any. This routine should update the step value
1108 * and return. It should not start a new request. The core will call
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001109 * ide_start_power_step() for the new step value, unless step have been
1110 * set to IDE_PM_COMPLETED.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112enum {
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001113 IDE_PM_START_SUSPEND,
1114 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1115 IDE_PM_STANDBY,
1116
1117 IDE_PM_START_RESUME,
1118 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1119 IDE_PM_IDLE,
1120 IDE_PM_RESTORE_DMA,
1121
1122 IDE_PM_COMPLETED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123};
1124
1125/*
1126 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001127 *
1128 * The gendriver.owner field should be set to the module owner of this driver.
1129 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001131struct ide_driver_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132 const char *version;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1134 int (*end_request)(ide_drive_t *, int, int);
1135 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +00001137 int (*probe)(ide_drive_t *);
1138 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +02001139 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +00001140 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001141#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001142 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1143 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001144#endif
1145};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001146
Russell King4031bbe2006-01-06 11:41:00 +00001147#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1148
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +02001149int ide_device_get(ide_drive_t *);
1150void ide_device_put(ide_drive_t *);
1151
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001152struct ide_ioctl_devset {
1153 unsigned int get_ioctl;
1154 unsigned int set_ioctl;
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001155 const struct ide_devset *setting;
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001156};
1157
1158int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1159 unsigned long, const struct ide_ioctl_devset *);
1160
Al Viro1bddd9e2008-09-02 17:19:43 -04001161int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162
Bartlomiej Zolnierkiewiczebae41a2008-04-27 15:38:29 +02001163extern int ide_vlb_clk;
1164extern int ide_pci_clk;
1165
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -07001167int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1168 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1171
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +01001172void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1173 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174
Bartlomiej Zolnierkiewicz1fc14252008-04-28 23:44:39 +02001175void ide_execute_pkt_cmd(ide_drive_t *);
1176
Bartlomiej Zolnierkiewicz9f87abe2008-04-28 23:44:41 +02001177void ide_pad_transfer(ide_drive_t *, int, int);
1178
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1180
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1182
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001183void ide_fix_driveid(u16 *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +01001184
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185extern void ide_fixstring(u8 *, const int, const int);
1186
Bartlomiej Zolnierkiewiczb163f462008-10-10 22:39:23 +02001187int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1188
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +02001189int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191extern ide_startstop_t ide_do_reset (ide_drive_t *);
1192
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001193extern int ide_devset_execute(ide_drive_t *drive,
1194 const struct ide_devset *setting, int arg);
1195
FUJITA Tomonori63f5abb2008-07-15 21:21:51 +02001196extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1199
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +02001200void ide_tf_dump(const char *, struct ide_taskfile *);
1201
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001202void ide_exec_command(ide_hwif_t *, u8);
1203u8 ide_read_status(ide_hwif_t *);
1204u8 ide_read_altstatus(ide_hwif_t *);
1205u8 ide_read_sff_dma_status(ide_hwif_t *);
1206
1207void ide_set_irq(ide_hwif_t *, int);
1208
1209void ide_tf_load(ide_drive_t *, ide_task_t *);
1210void ide_tf_read(ide_drive_t *, ide_task_t *);
1211
1212void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1213void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1214
Bartlomiej Zolnierkiewiczacaa0f52008-10-10 22:39:36 +02001215int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1216
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217extern void SELECT_DRIVE(ide_drive_t *);
Bartlomiej Zolnierkiewiczed4af482008-07-15 21:21:48 +02001218void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001220u8 ide_read_error(ide_drive_t *);
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +02001221void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001222
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +01001225void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1226
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +02001227int ide_check_atapi_device(ide_drive_t *, const char *);
1228
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +02001229void ide_init_pc(struct ide_atapi_pc *);
1230
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +02001231/* Disk head parking */
1232extern wait_queue_head_t ide_park_wq;
1233ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1234 char *buf);
1235ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1236 const char *buf, size_t len);
1237
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001238/*
1239 * Special requests for ide-tape block device strategy routine.
1240 *
1241 * In order to service a character device command, we add special requests to
1242 * the tail of our block device request queue and wait for their completion.
1243 */
1244enum {
1245 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1246 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1247 REQ_IDETAPE_READ = (1 << 2),
1248 REQ_IDETAPE_WRITE = (1 << 3),
1249};
1250
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +02001251int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001252
Bartlomiej Zolnierkiewiczde699ad2008-10-10 22:39:39 +02001253int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz0c8a6c72008-10-10 22:39:39 +02001254int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001255int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz6b0da282008-10-13 21:39:32 +02001256void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1257void ide_retry_pc(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001258
Bartlomiej Zolnierkiewicz844b9462008-10-13 21:39:31 +02001259static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1260{
1261 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1262}
1263
1264int ide_scsi_expiry(ide_drive_t *);
1265
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +02001266ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
Bartlomiej Zolnierkiewicz594c16d2008-07-15 21:21:58 +02001267
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +01001268ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269
Tejun Heo4d7a9842008-01-26 20:13:11 +01001270void task_end_request(ide_drive_t *, struct request *, u8);
1271
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +01001272int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +01001273int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1274
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278extern int ide_config_drive_speed(ide_drive_t *, u8);
1279extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1281
1282extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1283
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1285
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +01001287extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001288extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289
1290void ide_init_disk(struct gendisk *, ide_drive_t *);
1291
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001292#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001293extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1294#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001295#else
1296#define ide_pci_register_driver(d) pci_register_driver(d)
1297#endif
1298
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001299static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1300{
1301 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1302 return 1;
1303 return 0;
1304}
1305
Bartlomiej Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +02001306void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001307 hw_regs_t *, hw_regs_t **);
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001308void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001310#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001311int ide_pci_set_master(struct pci_dev *, const char *);
1312unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczebb00fb2008-07-23 19:55:51 +02001313int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001314int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001315#else
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001316static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1317 const struct ide_port_info *d)
1318{
1319 return -EINVAL;
1320}
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001321#endif
1322
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323typedef struct ide_pci_enablebit_s {
1324 u8 reg; /* byte pci reg holding the enable-bit */
1325 u8 mask; /* mask to isolate the enable-bit */
1326 u8 val; /* value of masked reg when "enabled" */
1327} ide_pci_enablebit_t;
1328
1329enum {
1330 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001331 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001332 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001333 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001334 /* don't use legacy PIO blacklist */
1335 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
Bartlomiej Zolnierkiewicze277f912008-04-26 17:36:36 +02001336 /* set for the second port of QD65xx */
1337 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001338 /* use PIO8/9 for prefetch off/on */
1339 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1340 /* use PIO6/7 for fast-devsel off/on */
1341 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1342 /* use 100-102 and 200-202 PIO values to set DMA modes */
1343 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001344 /*
1345 * keep DMA setting when programming PIO mode, may be used only
1346 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1347 */
1348 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001349 /* program host for the transfer mode after programming device */
1350 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1351 /* don't program host/device for the transfer mode ("smart" hosts) */
1352 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001353 /* trust BIOS for programming chipset/device for DMA */
1354 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewiczcafa0272008-05-14 23:06:16 +02001355 /* host is CS5510/CS5520 */
1356 IDE_HFLAG_CS5520 = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001357 /* ATAPI DMA is unsupported */
1358 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001359 /* set if host is a "non-bootable" controller */
1360 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001361 /* host doesn't support DMA */
1362 IDE_HFLAG_NO_DMA = (1 << 14),
1363 /* check if host is PCI IDE device before allowing DMA */
1364 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +02001365 /* host uses MMIO */
1366 IDE_HFLAG_MMIO = (1 << 16),
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001367 /* no LBA48 */
1368 IDE_HFLAG_NO_LBA48 = (1 << 17),
1369 /* no LBA48 DMA */
1370 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001371 /* data FIFO is cleared by an error */
1372 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001373 /* serialize ports */
1374 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001375 /* use legacy IRQs */
1376 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001377 /* force use of legacy IRQs */
1378 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz272a3702007-10-20 00:32:30 +02001379 /* limit LBA48 requests to 256 sectors */
1380 IDE_HFLAG_RQSIZE_256 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001381 /* use 32-bit I/O ops */
1382 IDE_HFLAG_IO_32BIT = (1 << 24),
1383 /* unmask IRQs */
1384 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001385 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
Bartlomiej Zolnierkiewicz1fd18902008-04-26 22:25:24 +02001386 /* serialize ports if DMA is possible (for sl82c105) */
1387 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001388 /* force host out of "simplex" mode */
1389 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001390 /* DSC overlap is unsupported */
1391 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001392 /* never use 32-bit I/O ops */
1393 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1394 /* never unmask IRQs */
1395 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396};
1397
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001398#ifdef CONFIG_BLK_DEV_OFFBOARD
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001399# define IDE_HFLAG_OFF_BOARD 0
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001400#else
1401# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001402#endif
1403
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001404struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 char *name;
Bartlomiej Zolnierkiewicza326b022008-07-24 22:53:33 +02001406 unsigned int (*init_chipset)(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 void (*init_iops)(ide_hwif_t *);
1408 void (*init_hwif)(ide_hwif_t *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001409 int (*init_dma)(ide_hwif_t *,
1410 const struct ide_port_info *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001411
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001412 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001413 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001414 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001415
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 ide_pci_enablebit_t enablebits[2];
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001417 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001418 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001419 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001420 u8 swdma_mask;
1421 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001422 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001423};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +02001425int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1426int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1427 const struct ide_port_info *, void *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +02001428void ide_pci_remove(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +02001430#ifdef CONFIG_PM
1431int ide_pci_suspend(struct pci_dev *, pm_message_t);
1432int ide_pci_resume(struct pci_dev *);
1433#else
1434#define ide_pci_suspend NULL
1435#define ide_pci_resume NULL
1436#endif
1437
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438void ide_map_sg(ide_drive_t *, struct request *);
1439void ide_init_sg_cmd(ide_drive_t *, struct request *);
1440
1441#define BAD_DMA_DRIVE 0
1442#define GOOD_DMA_DRIVE 1
1443
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001444struct drive_list_entry {
1445 const char *id_model;
1446 const char *id_firmware;
1447};
1448
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001449int ide_in_drive_list(u16 *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001450
1451#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001452int ide_dma_good_drive(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001454int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001455
1456u8 ide_find_dma_mode(ide_drive_t *, u8);
1457
1458static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1459{
1460 return ide_find_dma_mode(drive, XFER_UDMA_6);
1461}
1462
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001463void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001464void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001465void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001466int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001467void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468ide_startstop_t ide_dma_intr(ide_drive_t *);
1469
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001470int ide_allocate_dma_engine(ide_hwif_t *);
1471void ide_release_dma_engine(ide_hwif_t *);
1472
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001473int ide_build_sglist(ide_drive_t *, struct request *);
1474void ide_destroy_dmatable(ide_drive_t *);
1475
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001476#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001477int config_drive_for_dma(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478extern int ide_build_dmatable(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001479void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480extern int ide_dma_setup(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001481void ide_dma_exec_cmd(ide_drive_t *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482extern void ide_dma_start(ide_drive_t *);
Bartlomiej Zolnierkiewicz653bcf52008-10-13 21:39:46 +02001483int ide_dma_end(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001484int ide_dma_test_irq(ide_drive_t *);
Kevin Hilman71fc9fc2008-09-02 20:18:46 +02001485extern const struct ide_dma_ops sff_dma_ops;
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001486#else
1487static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001488#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001490void ide_dma_lost_irq(ide_drive_t *);
Bartlomiej Zolnierkiewiczffa15a62008-10-13 21:39:46 +02001491void ide_dma_timeout(ide_drive_t *);
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001492
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001494static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001495static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001496static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001497static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001498static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001499static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001501static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001502static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz0d1bad22008-04-26 22:25:19 +02001503static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001504#endif /* CONFIG_BLK_DEV_IDEDMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001506#ifdef CONFIG_BLK_DEV_IDEACPI
1507extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1508extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1509extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1510extern void ide_acpi_init(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001511void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001512extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001513#else
1514static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1515static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1516static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1517static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001518static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001519static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001520#endif
1521
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +01001522void ide_remove_port_from_hwgroup(ide_hwif_t *);
Bartlomiej Zolnierkiewicz387750c2008-04-27 15:38:31 +02001523void ide_unregister(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524
1525void ide_register_region(struct gendisk *);
1526void ide_unregister_region(struct gendisk *);
1527
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001528void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001530void ide_port_apply_params(ide_hwif_t *);
1531
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001532struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +02001533void ide_host_free(struct ide_host *);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001534int ide_host_register(struct ide_host *, const struct ide_port_info *,
1535 hw_regs_t **);
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +02001536int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1537 struct ide_host **);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001538void ide_host_remove(struct ide_host *);
Bartlomiej Zolnierkiewicz0bfeee72008-04-26 22:25:16 +02001539int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001540void ide_port_unregister_devices(ide_hwif_t *);
1541void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542
1543static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1544{
1545 return hwif->hwif_data;
1546}
1547
1548static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1549{
1550 hwif->hwif_data = data;
1551}
1552
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001553const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001554extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1555extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1556
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001557u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558u8 ide_dump_status(ide_drive_t *, const char *, u8);
1559
Bartlomiej Zolnierkiewicz3be53f32008-07-16 20:33:36 +02001560struct ide_timing {
1561 u8 mode;
1562 u8 setup; /* t1 */
1563 u16 act8b; /* t2 for 8-bit io */
1564 u16 rec8b; /* t2i for 8-bit io */
1565 u16 cyc8b; /* t0 for 8-bit io */
1566 u16 active; /* t2 or tD */
1567 u16 recover; /* t2i or tK */
1568 u16 cycle; /* t0 */
1569 u16 udma; /* t2CYCTYP/2 */
1570};
1571
1572enum {
1573 IDE_TIMING_SETUP = (1 << 0),
1574 IDE_TIMING_ACT8B = (1 << 1),
1575 IDE_TIMING_REC8B = (1 << 2),
1576 IDE_TIMING_CYC8B = (1 << 3),
1577 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1578 IDE_TIMING_CYC8B,
1579 IDE_TIMING_ACTIVE = (1 << 4),
1580 IDE_TIMING_RECOVER = (1 << 5),
1581 IDE_TIMING_CYCLE = (1 << 6),
1582 IDE_TIMING_UDMA = (1 << 7),
1583 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1584 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1585 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1586};
1587
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001588struct ide_timing *ide_timing_find_mode(u8);
Bartlomiej Zolnierkiewiczc9d6c1a2008-07-16 20:33:39 +02001589u16 ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001590void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1591 struct ide_timing *, unsigned int);
1592int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1593
Bartlomiej Zolnierkiewicz9ad54092008-07-16 20:33:39 +02001594int ide_scan_pio_blacklist(char *);
1595
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001596u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001598int ide_set_pio_mode(ide_drive_t *, u8);
1599int ide_set_dma_mode(ide_drive_t *, u8);
1600
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001601void ide_set_pio(ide_drive_t *, u8);
1602
1603static inline void ide_set_max_pio(ide_drive_t *drive)
1604{
1605 ide_set_pio(drive, 255);
1606}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607
1608extern spinlock_t ide_lock;
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001609extern struct mutex ide_cfg_mtx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610/*
1611 * Structure locking:
1612 *
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001613 * ide_cfg_mtx and ide_lock together protect changes to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 * ide_hwif_t->{next,hwgroup}
1615 * ide_drive_t->next
1616 *
1617 * ide_hwgroup_t->busy: ide_lock
1618 * ide_hwgroup_t->hwif: ide_lock
1619 * ide_hwif_t->mate: constant, no locking
1620 * ide_drive_t->hwif: constant, no locking
1621 */
1622
Ingo Molnar366c7f52006-07-03 00:25:25 -07001623#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624
1625extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001626extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001627
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001628static inline void ide_dump_identify(u8 *id)
1629{
1630 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1631}
1632
Christoph Lameter86b37862005-08-09 19:59:21 -07001633static inline int hwif_to_node(ide_hwif_t *hwif)
1634{
Bartlomiej Zolnierkiewicz96f80212008-09-02 20:18:47 +02001635 return hwif->dev ? dev_to_node(hwif->dev) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001636}
1637
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +02001638static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001639{
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +02001640 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001641
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +02001642 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001643}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644#endif /* _IDE_H */