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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
Linus Torvalds1da177e2005-04-16 15:20:36 -070035/*
36 * Probably not wise to fiddle with these
37 */
Bartlomiej Zolnierkiewiczb40d1b82009-01-06 17:20:51 +010038#define IDE_DEFAULT_MAX_FAILURES 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#define ERROR_MAX 8 /* Max read/write errors per sector */
40#define ERROR_RESET 3 /* Reset controller every 4th retry */
41#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043/*
44 * Definitions for accessing IDE controller registers
45 */
46#define IDE_NR_PORTS (10)
47
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020048struct ide_io_ports {
49 unsigned long data_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020051 union {
52 unsigned long error_addr; /* read: error */
53 unsigned long feature_addr; /* write: feature */
54 };
55
56 unsigned long nsect_addr;
57 unsigned long lbal_addr;
58 unsigned long lbam_addr;
59 unsigned long lbah_addr;
60
61 unsigned long device_addr;
62
63 union {
64 unsigned long status_addr; /*  read: status  */
65 unsigned long command_addr; /* write: command */
66 };
67
68 unsigned long ctl_addr;
69
70 unsigned long irq_addr;
71};
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +020075#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
76#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
77#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
78#define DRIVE_READY (ATA_DRDY | ATA_DSC)
79
80#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82#define SATA_NR_PORTS (3) /* 16 possible ?? */
83
84#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
Linus Torvalds1da177e2005-04-16 15:20:36 -070088/*
89 * Our Physical Region Descriptor (PRD) table should be large enough
90 * to handle the biggest I/O request we are likely to see. Since requests
91 * can have no more than 256 sectors, and since the typical blocksize is
92 * two or more sectors, we could get by with a limit of 128 entries here for
93 * the usual worst case. Most requests seem to include some contiguous blocks,
94 * further reducing the number of table entries required.
95 *
96 * The driver reverts to PIO mode for individual requests that exceed
97 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
98 * 100% of all crazy scenarios here is not necessary.
99 *
100 * As it turns out though, we must allocate a full 4KB page for this,
101 * so the two PRD tables (ide0 & ide1) will each get half of that,
102 * allowing each to have about 256 entries (8 bytes each) from this.
103 */
104#define PRD_BYTES 8
105#define PRD_ENTRIES 256
106
107/*
108 * Some more useful definitions
109 */
110#define PARTN_BITS 6 /* number of minor dev bits for partitions */
111#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
112#define SECTOR_SIZE 512
Bartlomiej Zolnierkiewicz151a6702008-10-10 22:39:28 +0200113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114/*
115 * Timeouts for various operations:
116 */
Bartlomiej Zolnierkiewiczd6e29552008-10-10 22:39:39 +0200117enum {
118 /* spec allows up to 20ms */
119 WAIT_DRQ = HZ / 10, /* 100ms */
120 /* some laptops are very slow */
121 WAIT_READY = 5 * HZ, /* 5s */
122 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
123 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
124 /* worst case when spinning up */
125 WAIT_WORSTCASE = 30 * HZ, /* 30s */
126 /* maximum wait for an IRQ to happen */
127 WAIT_CMD = 10 * HZ, /* 10s */
128 /* Some drives require a longer IRQ timeout. */
129 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
130 /*
131 * Some drives (for example, Seagate STT3401A Travan) require a very
132 * long timeout, because they don't return an interrupt or clear their
133 * BSY bit until after the command completes (even retension commands).
134 */
135 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
136 /* minimum sleep time */
137 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
138};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140/*
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200141 * Op codes for special requests to be handled by ide_special_rq().
142 * Values should be in the range of 0x20 to 0x3f.
143 */
144#define REQ_DRIVE_RESET 0x20
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200145#define REQ_DEVSET_EXEC 0x21
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200146#define REQ_PARK_HEADS 0x22
147#define REQ_UNPARK_HEADS 0x23
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200148
149/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 * Check for an interrupt and acknowledge the interrupt status
151 */
152struct hwif_s;
153typedef int (ide_ack_intr_t)(struct hwif_s *);
154
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155/*
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
158 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200159enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 ide_cmd640, ide_dtc2278, ide_ali14xx,
161 ide_qd65xx, ide_umc8672, ide_ht6560b,
Bartlomiej Zolnierkiewiczb7876a62008-12-29 20:27:34 +0100162 ide_4drives, ide_pmac, ide_acorn,
Bartlomiej Zolnierkiewicz9a0e77f2008-04-18 00:46:24 +0200163 ide_au1xxx, ide_palm3710
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200164};
165
166typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
168/*
169 * Structure to hold all information about the location of this port
170 */
171typedef struct hw_regs_s {
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200172 union {
173 struct ide_io_ports io_ports;
174 unsigned long io_ports_array[IDE_NR_PORTS];
175 };
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
179 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewiczc56c5642008-07-16 20:33:40 +0200180 struct device *dev, *parent;
Bartlomiej Zolnierkiewiczd6276b52008-07-23 19:55:56 +0200181 unsigned long config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182} hw_regs_t;
183
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184static inline void ide_std_init_ports(hw_regs_t *hw,
185 unsigned long io_addr,
186 unsigned long ctl_addr)
187{
188 unsigned int i;
189
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200190 for (i = 0; i <= 7; i++)
191 hw->io_ports_array[i] = io_addr++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200193 hw->io_ports.ctl_addr = ctl_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194}
195
Bartlomiej Zolnierkiewicza861beb2008-07-08 19:27:22 +0200196/* for IDE PCI controllers in legacy mode, temporary */
197static inline int __ide_default_irq(unsigned long base)
198{
199 switch (base) {
200#ifdef CONFIG_IA64
201 case 0x1f0: return isa_irq_to_vector(14);
202 case 0x170: return isa_irq_to_vector(15);
203#else
204 case 0x1f0: return 14;
205 case 0x170: return 15;
206#endif
207 }
208 return 0;
209}
210
Bartlomiej Zolnierkiewicz2a8f7452008-07-24 22:53:31 +0200211#if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
212 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
213 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214#include <asm/ide.h>
Bartlomiej Zolnierkiewicz2a8f7452008-07-24 22:53:31 +0200215#else
216#include <asm-generic/ide_iops.h>
217#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
Adrian Bunkc5bfc372008-08-05 18:17:01 +0200219#define MAX_HWIFS 10
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221/* Currently only m68k, apus and m8xx need it */
222#ifndef IDE_ARCH_ACK_INTR
223# define ide_ack_intr(hwif) (1)
224#endif
225
226/* Currently only Atari needs it */
227#ifndef IDE_ARCH_LOCK
228# define ide_release_lock() do {} while (0)
229# define ide_get_lock(hdlr, data) do {} while (0)
230#endif /* IDE_ARCH_LOCK */
231
232/*
233 * Now for the data we need to maintain per-drive: ide_drive_t
234 */
235
236#define ide_scsi 0x21
237#define ide_disk 0x20
238#define ide_optical 0x7
239#define ide_cdrom 0x5
240#define ide_tape 0x1
241#define ide_floppy 0x0
242
243/*
244 * Special Driver Flags
245 *
246 * set_geometry : respecify drive geometry
247 * recalibrate : seek to cyl 0
248 * set_multmode : set multmode count
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 * reserved : unused
250 */
251typedef union {
252 unsigned all : 8;
253 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 unsigned set_geometry : 1;
255 unsigned recalibrate : 1;
256 unsigned set_multmode : 1;
Bartlomiej Zolnierkiewicz6982daf2008-10-13 21:39:40 +0200257 unsigned reserved : 5;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 } b;
259} special_t;
260
261/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 * Status returned from various ide_ functions
263 */
264typedef enum {
265 ide_stopped, /* no drive operation was started */
266 ide_started, /* a drive operation was started, handler was set */
267} ide_startstop_t;
268
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200269enum {
270 IDE_TFLAG_LBA48 = (1 << 0),
271 IDE_TFLAG_FLAGGED = (1 << 2),
272 IDE_TFLAG_OUT_DATA = (1 << 3),
273 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
274 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
275 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
276 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
277 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
278 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
279 IDE_TFLAG_OUT_HOB_NSECT |
280 IDE_TFLAG_OUT_HOB_LBAL |
281 IDE_TFLAG_OUT_HOB_LBAM |
282 IDE_TFLAG_OUT_HOB_LBAH,
283 IDE_TFLAG_OUT_FEATURE = (1 << 9),
284 IDE_TFLAG_OUT_NSECT = (1 << 10),
285 IDE_TFLAG_OUT_LBAL = (1 << 11),
286 IDE_TFLAG_OUT_LBAM = (1 << 12),
287 IDE_TFLAG_OUT_LBAH = (1 << 13),
288 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
289 IDE_TFLAG_OUT_NSECT |
290 IDE_TFLAG_OUT_LBAL |
291 IDE_TFLAG_OUT_LBAM |
292 IDE_TFLAG_OUT_LBAH,
293 IDE_TFLAG_OUT_DEVICE = (1 << 14),
294 IDE_TFLAG_WRITE = (1 << 15),
295 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
296 IDE_TFLAG_IN_DATA = (1 << 17),
297 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
298 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
299 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
300 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
301 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
302 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
303 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
304 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
305 IDE_TFLAG_IN_HOB_LBAM |
306 IDE_TFLAG_IN_HOB_LBAH,
307 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
308 IDE_TFLAG_IN_HOB_NSECT |
309 IDE_TFLAG_IN_HOB_LBA,
310 IDE_TFLAG_IN_FEATURE = (1 << 1),
311 IDE_TFLAG_IN_NSECT = (1 << 25),
312 IDE_TFLAG_IN_LBAL = (1 << 26),
313 IDE_TFLAG_IN_LBAM = (1 << 27),
314 IDE_TFLAG_IN_LBAH = (1 << 28),
315 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
316 IDE_TFLAG_IN_LBAM |
317 IDE_TFLAG_IN_LBAH,
318 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
319 IDE_TFLAG_IN_LBA,
320 IDE_TFLAG_IN_DEVICE = (1 << 29),
321 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
322 IDE_TFLAG_IN_HOB,
323 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
324 IDE_TFLAG_IN_TF,
325 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
326 IDE_TFLAG_IN_DEVICE,
327 /* force 16-bit I/O operations */
328 IDE_TFLAG_IO_16BIT = (1 << 30),
329 /* ide_task_t was allocated using kmalloc() */
330 IDE_TFLAG_DYN = (1 << 31),
331};
332
333struct ide_taskfile {
334 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
335
336 u8 hob_feature; /* 1-5: additional data to support LBA48 */
337 u8 hob_nsect;
338 u8 hob_lbal;
339 u8 hob_lbam;
340 u8 hob_lbah;
341
342 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
343
344 union { /*  7: */
345 u8 error; /* read: error */
346 u8 feature; /* write: feature */
347 };
348
349 u8 nsect; /* 8: number of sectors */
350 u8 lbal; /* 9: LBA low */
351 u8 lbam; /* 10: LBA mid */
352 u8 lbah; /* 11: LBA high */
353
354 u8 device; /* 12: device select */
355
356 union { /* 13: */
357 u8 status; /*  read: status  */
358 u8 command; /* write: command */
359 };
360};
361
362typedef struct ide_task_s {
363 union {
364 struct ide_taskfile tf;
365 u8 tf_array[14];
366 };
367 u32 tf_flags;
368 int data_phase;
369 struct request *rq; /* copy of request */
370 void *special; /* valid_t generally */
371} ide_task_t;
372
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200373/* ATAPI packet command flags */
374enum {
375 /* set when an error is considered normal - no retry (ide-tape) */
376 PC_FLAG_ABORT = (1 << 0),
377 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
378 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
379 PC_FLAG_DMA_OK = (1 << 3),
380 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
381 PC_FLAG_DMA_ERROR = (1 << 5),
382 PC_FLAG_WRITING = (1 << 6),
383 /* command timed out */
384 PC_FLAG_TIMEDOUT = (1 << 7),
385};
386
387/*
388 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
389 * This is used for several packet commands (not for READ/WRITE commands).
390 */
391#define IDE_PC_BUFFER_SIZE 256
Borislav Petkov4cad0852009-01-02 16:12:53 +0100392#define ATAPI_WAIT_PC (60 * HZ)
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200393
394struct ide_atapi_pc {
395 /* actual packet bytes */
396 u8 c[12];
397 /* incremented on each retry */
398 int retries;
399 int error;
400
401 /* bytes to transfer */
402 int req_xfer;
403 /* bytes actually transferred */
404 int xferred;
405
406 /* data buffer */
407 u8 *buf;
408 /* current buffer position */
409 u8 *cur_pos;
410 int buf_size;
411 /* missing/available data on the current buffer */
412 int b_count;
413
414 /* the corresponding request */
415 struct request *rq;
416
417 unsigned long flags;
418
419 /*
420 * those are more or less driver-specific and some of them are subject
421 * to change/removal later.
422 */
423 u8 pc_buf[IDE_PC_BUFFER_SIZE];
424
425 /* idetape only */
426 struct idetape_bh *bh;
427 char *b_data;
428
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200429 struct scatterlist *sg;
430 unsigned int sg_cnt;
431
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200432 unsigned long timeout;
433};
434
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200435struct ide_devset;
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100436struct ide_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100438#ifdef CONFIG_BLK_DEV_IDEACPI
439struct ide_acpi_drive_link;
440struct ide_acpi_hwif_link;
441#endif
442
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200443struct ide_drive_s;
444
445struct ide_disk_ops {
446 int (*check)(struct ide_drive_s *, const char *);
447 int (*get_capacity)(struct ide_drive_s *);
448 void (*setup)(struct ide_drive_s *);
449 void (*flush)(struct ide_drive_s *);
450 int (*init_media)(struct ide_drive_s *, struct gendisk *);
451 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
452 int);
453 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
454 sector_t);
455 int (*end_request)(struct ide_drive_s *, int, int);
Al Virobadf8082008-10-16 10:23:20 -0400456 int (*ioctl)(struct ide_drive_s *, struct block_device *,
457 fmode_t, unsigned int, unsigned long);
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200458};
459
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200460/* ATAPI device flags */
461enum {
462 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200463
464 /* ide-cd */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200465 /* Drive cannot eject the disc. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100466 IDE_AFLAG_NO_EJECT = (1 << 1),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200467 /* Drive is a pre ATAPI 1.2 drive. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100468 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200469 /* TOC addresses are in BCD. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100470 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200471 /* TOC track numbers are in BCD. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100472 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200473 /*
474 * Drive does not provide data in multiples of SECTOR_SIZE
475 * when more than one interrupt is needed.
476 */
Borislav Petkovbf647412009-01-02 16:12:50 +0100477 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200478 /* Saved TOC information is current. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100479 IDE_AFLAG_TOC_VALID = (1 << 6),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200480 /* We think that the drive door is locked. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100481 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200482 /* SET_CD_SPEED command is unsupported. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100483 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
484 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
485 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
486 IDE_AFLAG_SANYO_3CD = (1 << 11),
487 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
488 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
489 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200490
491 /* ide-floppy */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200492 /* Avoid commands not supported in Clik drive */
Borislav Petkovbf647412009-01-02 16:12:50 +0100493 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200494 /* Requires BH algorithm for packets */
Borislav Petkovbf647412009-01-02 16:12:50 +0100495 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200496 /* Supports format progress report */
Borislav Petkovbf647412009-01-02 16:12:50 +0100497 IDE_AFLAG_SRFP = (1 << 17),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200498
499 /* ide-tape */
Borislav Petkovbf647412009-01-02 16:12:50 +0100500 IDE_AFLAG_IGNORE_DSC = (1 << 18),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200501 /* 0 When the tape position is unknown */
Borislav Petkovbf647412009-01-02 16:12:50 +0100502 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200503 /* Device already opened */
Borislav Petkovbf647412009-01-02 16:12:50 +0100504 IDE_AFLAG_BUSY = (1 << 20),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200505 /* Attempt to auto-detect the current user block size */
Borislav Petkovbf647412009-01-02 16:12:50 +0100506 IDE_AFLAG_DETECT_BS = (1 << 21),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200507 /* Currently on a filemark */
Borislav Petkovbf647412009-01-02 16:12:50 +0100508 IDE_AFLAG_FILEMARK = (1 << 22),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200509 /* 0 = no tape is loaded, so we don't rewind after ejecting */
Borislav Petkovbf647412009-01-02 16:12:50 +0100510 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
Borislav Petkovf20f2582008-10-05 18:23:27 +0200511
Borislav Petkovbf647412009-01-02 16:12:50 +0100512 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200513};
514
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200515/* device flags */
516enum {
517 /* restore settings after device reset */
518 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
519 /* device is using DMA for read/write */
520 IDE_DFLAG_USING_DMA = (1 << 1),
521 /* okay to unmask other IRQs */
522 IDE_DFLAG_UNMASK = (1 << 2),
523 /* don't attempt flushes */
524 IDE_DFLAG_NOFLUSH = (1 << 3),
525 /* DSC overlap */
526 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
527 /* give potential excess bandwidth */
528 IDE_DFLAG_NICE1 = (1 << 5),
529 /* device is physically present */
530 IDE_DFLAG_PRESENT = (1 << 6),
531 /* device ejected hint */
532 IDE_DFLAG_DEAD = (1 << 7),
533 /* id read from device (synthetic if not set) */
534 IDE_DFLAG_ID_READ = (1 << 8),
535 IDE_DFLAG_NOPROBE = (1 << 9),
536 /* need to do check_media_change() */
537 IDE_DFLAG_REMOVABLE = (1 << 10),
538 /* needed for removable devices */
539 IDE_DFLAG_ATTACH = (1 << 11),
540 IDE_DFLAG_FORCED_GEOM = (1 << 12),
541 /* disallow setting unmask bit */
542 IDE_DFLAG_NO_UNMASK = (1 << 13),
543 /* disallow enabling 32-bit I/O */
544 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
545 /* for removable only: door lock/unlock works */
546 IDE_DFLAG_DOORLOCKING = (1 << 15),
547 /* disallow DMA */
548 IDE_DFLAG_NODMA = (1 << 16),
549 /* powermanagment told us not to do anything, so sleep nicely */
550 IDE_DFLAG_BLOCKED = (1 << 17),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200551 /* sleeping & sleep field valid */
Borislav Petkov53174642009-01-02 16:12:54 +0100552 IDE_DFLAG_SLEEPING = (1 << 18),
553 IDE_DFLAG_POST_RESET = (1 << 19),
554 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
555 IDE_DFLAG_LBA48 = (1 << 21),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200556 /* status of write cache */
Borislav Petkov53174642009-01-02 16:12:54 +0100557 IDE_DFLAG_WCACHE = (1 << 22),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200558 /* used for ignoring ATA_DF */
Borislav Petkov53174642009-01-02 16:12:54 +0100559 IDE_DFLAG_NOWERR = (1 << 23),
Bartlomiej Zolnierkiewiczc3922042008-10-13 21:39:37 +0200560 /* retrying in PIO */
Borislav Petkov53174642009-01-02 16:12:54 +0100561 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
562 IDE_DFLAG_LBA = (1 << 25),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200563 /* don't unload heads */
Borislav Petkov53174642009-01-02 16:12:54 +0100564 IDE_DFLAG_NO_UNLOAD = (1 << 26),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200565 /* heads unloaded, please don't reset port */
Borislav Petkov53174642009-01-02 16:12:54 +0100566 IDE_DFLAG_PARKED = (1 << 27),
567 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200568 /* write protect */
Borislav Petkov53174642009-01-02 16:12:54 +0100569 IDE_DFLAG_WP = (1 << 29),
570 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200571};
572
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200573struct ide_drive_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 char name[4]; /* drive name, such as "hda" */
575 char driver_req[10]; /* requests specific driver */
576
Jens Axboe165125e2007-07-24 09:28:11 +0200577 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
579 struct request *rq; /* current request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 void *driver_data; /* extra driver data */
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200581 u16 *id; /* identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200582#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200584 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200585#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
587
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200588 const struct ide_disk_ops *disk_ops;
589
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200590 unsigned long dev_flags;
591
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 unsigned long sleep; /* sleep until this time */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 unsigned long timeout; /* max time to wait for irq */
594
595 special_t special; /* special action flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Bartlomiej Zolnierkiewicz7f612f22008-10-13 21:39:40 +0200597 u8 select; /* basic drive/head select reg value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 u8 retry_pio; /* retrying dma capable host in pio */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 u8 waiting_for_dma; /* dma currently in progress */
Borislav Petkov0a9b6f82008-10-13 21:39:49 +0200600 u8 dma; /* atapi dma flag */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 u8 quirk_list; /* considered quirky, set for a specific host */
603 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200605 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 u8 dn; /* now wide spread use */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 u8 acoustic; /* acoustic management */
608 u8 media; /* disk, cdrom, tape, floppy, ... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 u8 ready_stat; /* min status value for drive ready */
610 u8 mult_count; /* current multiple sector setting */
611 u8 mult_req; /* requested multiple sector setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200613 u8 bad_wstat; /* used for ignoring ATA_DF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 u8 head; /* "real" number of heads */
615 u8 sect; /* "real" sectors per track */
616 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
617 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
618
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200619 /* delay this long before sending packet command */
620 u8 pc_delay;
621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
623 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200624 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 unsigned int failures; /* current failure count */
626 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700627 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
629 u64 capacity64; /* total number of sectors */
630
631 int lun; /* logical unit */
632 int crc_count; /* crc counter to reduce drive speed */
Borislav Petkovb22b2ca2008-10-13 21:39:34 +0200633
634 unsigned long debug_mask; /* debugging levels switch */
635
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100636#ifdef CONFIG_BLK_DEV_IDEACPI
637 struct ide_acpi_drive_link *acpidata;
638#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 struct list_head list;
640 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800641 struct completion gendev_rel_comp; /* to deal with device release() */
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200642
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200643 /* current packet command */
644 struct ide_atapi_pc *pc;
645
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200646 /* callback for packet commands */
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200647 void (*pc_callback)(struct ide_drive_s *, int);
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200648
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200649 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
650 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
651 unsigned int, int);
652
Borislav Petkovd6251d42009-01-06 17:20:58 +0100653 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
654
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200655 unsigned long atapi_flags;
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200656
657 struct ide_atapi_pc request_sense_pc;
658 struct request request_sense_rq;
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200659};
660
661typedef struct ide_drive_s ide_drive_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200663#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
664
665#define to_ide_drv(obj, cont_type) \
666 container_of(obj, struct cont_type, kref)
667
668#define ide_drv_g(disk, cont_type) \
669 container_of((disk)->private_data, struct cont_type, driver)
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200670
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200671struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200673struct ide_tp_ops {
674 void (*exec_command)(struct hwif_s *, u8);
675 u8 (*read_status)(struct hwif_s *);
676 u8 (*read_altstatus)(struct hwif_s *);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200677
678 void (*set_irq)(struct hwif_s *, int);
679
680 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
681 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
682
683 void (*input_data)(ide_drive_t *, struct request *, void *,
684 unsigned int);
685 void (*output_data)(ide_drive_t *, struct request *, void *,
686 unsigned int);
687};
688
689extern const struct ide_tp_ops default_tp_ops;
690
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200691/**
692 * struct ide_port_ops - IDE port operations
693 *
694 * @init_dev: host specific initialization of a device
695 * @set_pio_mode: routine to program host for PIO mode
696 * @set_dma_mode: routine to program host for DMA mode
697 * @selectproc: tweaks hardware to select drive
698 * @reset_poll: chipset polling based on hba specifics
699 * @pre_reset: chipset specific changes to default for device-hba resets
700 * @resetproc: routine to reset controller after a disk reset
701 * @maskproc: special host masking for drive selection
702 * @quirkproc: check host's drive quirk list
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200703 * @clear_irq: clear IRQ
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200704 *
705 * @mdma_filter: filter MDMA modes
706 * @udma_filter: filter UDMA modes
707 *
708 * @cable_detect: detect cable type
709 */
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200710struct ide_port_ops {
Bartlomiej Zolnierkiewicze6d95bd2008-07-16 20:33:42 +0200711 void (*init_dev)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200712 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200713 void (*set_dma_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200714 void (*selectproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200715 int (*reset_poll)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200716 void (*pre_reset)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200717 void (*resetproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200718 void (*maskproc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200719 void (*quirkproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200720 void (*clear_irq)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200721
722 u8 (*mdma_filter)(ide_drive_t *);
723 u8 (*udma_filter)(ide_drive_t *);
724
725 u8 (*cable_detect)(struct hwif_s *);
726};
727
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200728struct ide_dma_ops {
729 void (*dma_host_set)(struct ide_drive_s *, int);
730 int (*dma_setup)(struct ide_drive_s *);
731 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
732 void (*dma_start)(struct ide_drive_s *);
733 int (*dma_end)(struct ide_drive_s *);
734 int (*dma_test_irq)(struct ide_drive_s *);
735 void (*dma_lost_irq)(struct ide_drive_s *);
736 void (*dma_timeout)(struct ide_drive_s *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +0100737 /*
738 * The following method is optional and only required to be
739 * implemented for the SFF-8038i compatible controllers.
740 */
741 u8 (*dma_sff_read_status)(struct hwif_s *);
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200742};
743
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200744struct ide_host;
745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746typedef struct hwif_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 struct hwif_s *mate; /* other hwif from same PCI chip */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
749
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200750 struct ide_host *host;
751
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 char name[6]; /* name of interface, eg. "ide0" */
753
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200754 struct ide_io_ports io_ports;
755
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100758 ide_drive_t *devices[MAX_DRIVES + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759
760 u8 major; /* our major number */
761 u8 index; /* 0 for ide0; 1 for ide1; ... */
762 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
David Millere95d9c62007-10-22 02:09:00 -0700764 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200765
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200766 u8 pio_mask;
767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 u8 ultra_mask;
769 u8 mwdma_mask;
770 u8 swdma_mask;
771
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200772 u8 cbl; /* cable type */
773
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 hwif_chipset_t chipset; /* sub-module for tuning.. */
775
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100776 struct device *dev;
777
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200778 ide_ack_intr_t *ack_intr;
779
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 void (*rw_disk)(ide_drive_t *, struct request *);
781
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200782 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200783 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200784 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100785
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 /* dma physical region descriptor table (cpu view) */
787 unsigned int *dmatable_cpu;
788 /* dma physical region descriptor table (dma view) */
789 dma_addr_t dmatable_dma;
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200790
791 /* maximum number of PRD table entries */
792 int prd_max_nents;
793 /* PRD entry size in bytes */
794 int prd_ent_size;
795
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 /* Scatter-gather list used to build the above */
797 struct scatterlist *sg_table;
798 int sg_max_nents; /* Maximum number of entries in it */
799 int sg_nents; /* Current number of entries in it */
800 int sg_dma_direction; /* dma transfer direction */
801
802 /* data phase of the active command (currently only valid for PIO/DMA) */
803 int data_phase;
804
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200805 struct ide_task_s task; /* current command */
806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 unsigned int nsect;
808 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200809 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 unsigned int cursg_ofs;
811
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 int rqsize; /* max sectors per request */
813 int irq; /* our irq number */
814
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 unsigned long dma_base; /* base addr for dma ports */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 unsigned long config_data; /* for use by chipset-specific code */
818 unsigned long select_data; /* for use by chipset-specific code */
819
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700820 unsigned long extra_base; /* extra addr for dma ports */
821 unsigned extra_ports; /* number of extra dma ports */
822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 unsigned present : 1; /* this interface exists */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100824 unsigned busy : 1; /* serializes devices on a port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200826 struct device gendev;
827 struct device *portdev;
828
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800829 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
831 void *hwif_data; /* extra hwif data */
832
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100833#ifdef CONFIG_BLK_DEV_IDEACPI
834 struct ide_acpi_hwif_link *acpidata;
835#endif
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100836
837 /* IRQ handler, if active */
838 ide_startstop_t (*handler)(ide_drive_t *);
839
840 /* BOOL: polling active & poll_timeout field valid */
841 unsigned int polling : 1;
842
843 /* current drive */
844 ide_drive_t *cur_dev;
845
846 /* current request */
847 struct request *rq;
848
849 /* failsafe timer */
850 struct timer_list timer;
851 /* timeout value during long polls */
852 unsigned long poll_timeout;
853 /* queried upon timeouts */
854 int (*expiry)(ide_drive_t *);
855
856 int req_gen;
857 int req_gen_timer;
858
859 spinlock_t lock;
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800860} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
Bartlomiej Zolnierkiewicza36223b2008-10-13 21:39:43 +0200862#define MAX_HOST_PORTS 4
863
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200864struct ide_host {
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100865 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200866 unsigned int n_ports;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200867 struct device *dev[2];
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200868 unsigned int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +0200869 unsigned long host_flags;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200870 void *host_priv;
Bartlomiej Zolnierkiewiczbd53cbc2009-01-06 17:20:48 +0100871 ide_hwif_t *cur_port; /* for hosts requiring serialization */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100872
873 /* used for hosts requiring serialization */
Ben Dookse720b9e2009-01-14 19:19:04 +0100874 volatile unsigned long host_busy;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200875};
876
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100877#define IDE_HOST_BUSY 0
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879/*
880 * internal ide interrupt handler type
881 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
883typedef int (ide_expiry_t)(ide_drive_t *);
884
Borislav Petkov0eea6452008-02-02 19:56:36 +0100885/* used by ide-cd, ide-floppy, etc. */
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200886typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
Borislav Petkov0eea6452008-02-02 19:56:36 +0100887
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200888extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200889
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200890/*
891 * configurable drive settings
892 */
893
894#define DS_SYNC (1 << 0)
895
896struct ide_devset {
897 int (*get)(ide_drive_t *);
898 int (*set)(ide_drive_t *, int);
899 unsigned int flags;
900};
901
902#define __DEVSET(_flags, _get, _set) { \
903 .flags = _flags, \
904 .get = _get, \
905 .set = _set, \
906}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200907
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200908#define ide_devset_get(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200909static int get_##name(ide_drive_t *drive) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200910{ \
911 return drive->field; \
912}
913
914#define ide_devset_set(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200915static int set_##name(ide_drive_t *drive, int arg) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200916{ \
917 drive->field = arg; \
918 return 0; \
919}
920
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200921#define ide_devset_get_flag(name, flag) \
922static int get_##name(ide_drive_t *drive) \
923{ \
924 return !!(drive->dev_flags & flag); \
925}
926
927#define ide_devset_set_flag(name, flag) \
928static int set_##name(ide_drive_t *drive, int arg) \
929{ \
930 if (arg) \
931 drive->dev_flags |= flag; \
932 else \
933 drive->dev_flags &= ~flag; \
934 return 0; \
935}
936
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200937#define __IDE_DEVSET(_name, _flags, _get, _set) \
938const struct ide_devset ide_devset_##_name = \
939 __DEVSET(_flags, _get, _set)
940
941#define IDE_DEVSET(_name, _flags, _get, _set) \
942static __IDE_DEVSET(_name, _flags, _get, _set)
943
944#define ide_devset_rw(_name, _func) \
945IDE_DEVSET(_name, 0, get_##_func, set_##_func)
946
947#define ide_devset_w(_name, _func) \
948IDE_DEVSET(_name, 0, NULL, set_##_func)
949
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200950#define ide_ext_devset_rw(_name, _func) \
951__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
952
953#define ide_ext_devset_rw_sync(_name, _func) \
954__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200955
956#define ide_decl_devset(_name) \
957extern const struct ide_devset ide_devset_##_name
958
959ide_decl_devset(io_32bit);
960ide_decl_devset(keepsettings);
961ide_decl_devset(pio_mode);
962ide_decl_devset(unmaskirq);
963ide_decl_devset(using_dma);
964
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200965#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 * /proc/ide interface
968 */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200969
970#define ide_devset_rw_field(_name, _field) \
971ide_devset_get(_name, _field); \
972ide_devset_set(_name, _field); \
973IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
974
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200975#define ide_devset_rw_flag(_name, _field) \
976ide_devset_get_flag(_name, _field); \
977ide_devset_set_flag(_name, _field); \
978IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
979
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200980struct ide_proc_devset {
981 const char *name;
982 const struct ide_devset *setting;
983 int min, max;
984 int (*mulf)(ide_drive_t *);
985 int (*divf)(ide_drive_t *);
986};
987
988#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
989 .name = __stringify(_name), \
990 .setting = &ide_devset_##_name, \
991 .min = _min, \
992 .max = _max, \
993 .mulf = _mulf, \
994 .divf = _divf, \
995}
996
997#define IDE_PROC_DEVSET(_name, _min, _max) \
998__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
999
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000typedef struct {
1001 const char *name;
1002 mode_t mode;
1003 read_proc_t *read_proc;
1004 write_proc_t *write_proc;
1005} ide_proc_entry_t;
1006
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001007void proc_ide_create(void);
1008void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001009void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +01001010void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +02001011void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001012void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001013void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
1014void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001015
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016read_proc_t proc_ide_read_capacity;
1017read_proc_t proc_ide_read_geometry;
1018
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019/*
1020 * Standard exit stuff:
1021 */
1022#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1023{ \
1024 len -= off; \
1025 if (len < count) { \
1026 *eof = 1; \
1027 if (len <= 0) \
1028 return 0; \
1029 } else \
1030 len = count; \
1031 *start = page + off; \
1032 return len; \
1033}
1034#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001035static inline void proc_ide_create(void) { ; }
1036static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001037static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +01001038static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +02001039static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001040static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001041static inline void ide_proc_register_driver(ide_drive_t *drive,
1042 struct ide_driver *driver) { ; }
1043static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1044 struct ide_driver *driver) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1046#endif
1047
Borislav Petkove1c7c462008-10-13 21:39:35 +02001048enum {
1049 /* enter/exit functions */
1050 IDE_DBG_FUNC = (1 << 0),
1051 /* sense key/asc handling */
1052 IDE_DBG_SENSE = (1 << 1),
1053 /* packet commands handling */
1054 IDE_DBG_PC = (1 << 2),
1055 /* request handling */
1056 IDE_DBG_RQ = (1 << 3),
1057 /* driver probing/setup */
1058 IDE_DBG_PROBE = (1 << 4),
1059};
1060
1061/* DRV_NAME has to be defined in the driver before using the macro below */
1062#define __ide_debug_log(lvl, fmt, args...) \
1063{ \
1064 if (unlikely(drive->debug_mask & lvl)) \
1065 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1066}
1067
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068/*
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001069 * Power Management state machine (rq->pm->pm_step).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001071 * For each step, the core calls ide_start_power_step() first.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 * This can return:
1073 * - ide_stopped : In this case, the core calls us back again unless
1074 * step have been set to ide_power_state_completed.
1075 * - ide_started : In this case, the channel is left busy until an
1076 * async event (interrupt) occurs.
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001077 * Typically, ide_start_power_step() will issue a taskfile request with
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078 * do_rw_taskfile().
1079 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001080 * Upon reception of the interrupt, the core will call ide_complete_power_step()
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 * with the error code if any. This routine should update the step value
1082 * and return. It should not start a new request. The core will call
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001083 * ide_start_power_step() for the new step value, unless step have been
1084 * set to IDE_PM_COMPLETED.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086enum {
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001087 IDE_PM_START_SUSPEND,
1088 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1089 IDE_PM_STANDBY,
1090
1091 IDE_PM_START_RESUME,
1092 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1093 IDE_PM_IDLE,
1094 IDE_PM_RESTORE_DMA,
1095
1096 IDE_PM_COMPLETED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097};
1098
Bartlomiej Zolnierkiewicze2984c62008-12-29 20:27:37 +01001099int generic_ide_suspend(struct device *, pm_message_t);
1100int generic_ide_resume(struct device *);
1101
1102void ide_complete_power_step(ide_drive_t *, struct request *);
1103ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1104void ide_complete_pm_request(ide_drive_t *, struct request *);
1105void ide_check_pm_state(ide_drive_t *, struct request *);
1106
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107/*
1108 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001109 *
1110 * The gendriver.owner field should be set to the module owner of this driver.
1111 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112 */
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001113struct ide_driver {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 const char *version;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1116 int (*end_request)(ide_drive_t *, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +00001118 int (*probe)(ide_drive_t *);
1119 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +02001120 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +00001121 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001122#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001123 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1124 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001125#endif
1126};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001128#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
Russell King4031bbe2006-01-06 11:41:00 +00001129
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +02001130int ide_device_get(ide_drive_t *);
1131void ide_device_put(ide_drive_t *);
1132
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001133struct ide_ioctl_devset {
1134 unsigned int get_ioctl;
1135 unsigned int set_ioctl;
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001136 const struct ide_devset *setting;
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001137};
1138
1139int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1140 unsigned long, const struct ide_ioctl_devset *);
1141
Al Viro1bddd9e2008-09-02 17:19:43 -04001142int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143
Bartlomiej Zolnierkiewiczebae41a2008-04-27 15:38:29 +02001144extern int ide_vlb_clk;
1145extern int ide_pci_clk;
1146
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -07001148int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1149 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1152
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +01001153void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1154 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155
Bartlomiej Zolnierkiewicz1fc14252008-04-28 23:44:39 +02001156void ide_execute_pkt_cmd(ide_drive_t *);
1157
Bartlomiej Zolnierkiewicz9f87abe2008-04-28 23:44:41 +02001158void ide_pad_transfer(ide_drive_t *, int, int);
1159
Bartlomiej Zolnierkiewicz9892ec52009-01-06 17:20:53 +01001160ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001161
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001162void ide_fix_driveid(u16 *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +01001163
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164extern void ide_fixstring(u8 *, const int, const int);
1165
Bartlomiej Zolnierkiewiczb163f462008-10-10 22:39:23 +02001166int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1167
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +02001168int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170extern ide_startstop_t ide_do_reset (ide_drive_t *);
1171
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001172extern int ide_devset_execute(ide_drive_t *drive,
1173 const struct ide_devset *setting, int arg);
1174
FUJITA Tomonori63f5abb2008-07-15 21:21:51 +02001175extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1178
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +02001179void ide_tf_dump(const char *, struct ide_taskfile *);
1180
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001181void ide_exec_command(ide_hwif_t *, u8);
1182u8 ide_read_status(ide_hwif_t *);
1183u8 ide_read_altstatus(ide_hwif_t *);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001184
1185void ide_set_irq(ide_hwif_t *, int);
1186
1187void ide_tf_load(ide_drive_t *, ide_task_t *);
1188void ide_tf_read(ide_drive_t *, ide_task_t *);
1189
1190void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1191void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1192
Bartlomiej Zolnierkiewiczacaa0f52008-10-10 22:39:36 +02001193int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1194
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195extern void SELECT_DRIVE(ide_drive_t *);
Bartlomiej Zolnierkiewiczed4af482008-07-15 21:21:48 +02001196void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001198u8 ide_read_error(ide_drive_t *);
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +02001199void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001200
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +01001203void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1204
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +02001205int ide_check_atapi_device(ide_drive_t *, const char *);
1206
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +02001207void ide_init_pc(struct ide_atapi_pc *);
1208
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +02001209/* Disk head parking */
1210extern wait_queue_head_t ide_park_wq;
1211ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1212 char *buf);
1213ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1214 const char *buf, size_t len);
1215
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001216/*
1217 * Special requests for ide-tape block device strategy routine.
1218 *
1219 * In order to service a character device command, we add special requests to
1220 * the tail of our block device request queue and wait for their completion.
1221 */
1222enum {
1223 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1224 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1225 REQ_IDETAPE_READ = (1 << 2),
1226 REQ_IDETAPE_WRITE = (1 << 3),
1227};
1228
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +02001229int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001230
Bartlomiej Zolnierkiewiczde699ad2008-10-10 22:39:39 +02001231int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz0c8a6c72008-10-10 22:39:39 +02001232int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001233int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz6b0da282008-10-13 21:39:32 +02001234void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1235void ide_retry_pc(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001236
Borislav Petkov4cad0852009-01-02 16:12:53 +01001237int ide_cd_expiry(ide_drive_t *);
Bartlomiej Zolnierkiewicz844b9462008-10-13 21:39:31 +02001238
Borislav Petkov392de1d2009-01-02 16:12:52 +01001239int ide_cd_get_xferlen(struct request *);
1240
Borislav Petkov28ad91d2009-01-02 16:12:56 +01001241ide_startstop_t ide_issue_pc(ide_drive_t *);
Bartlomiej Zolnierkiewicz594c16d2008-07-15 21:21:58 +02001242
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +01001243ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244
Tejun Heo4d7a9842008-01-26 20:13:11 +01001245void task_end_request(ide_drive_t *, struct request *, u8);
1246
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +01001247int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +01001248int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253extern int ide_config_drive_speed(ide_drive_t *, u8);
1254extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1256
1257extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1258
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1260
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +01001262extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001263extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264
1265void ide_init_disk(struct gendisk *, ide_drive_t *);
1266
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001267#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001268extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1269#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001270#else
1271#define ide_pci_register_driver(d) pci_register_driver(d)
1272#endif
1273
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001274static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1275{
1276 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1277 return 1;
1278 return 0;
1279}
1280
Bartlomiej Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +02001281void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001282 hw_regs_t *, hw_regs_t **);
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001283void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001285#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001286int ide_pci_set_master(struct pci_dev *, const char *);
1287unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczebb00fb2008-07-23 19:55:51 +02001288int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001289int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001290#else
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001291static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1292 const struct ide_port_info *d)
1293{
1294 return -EINVAL;
1295}
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001296#endif
1297
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001298struct ide_pci_enablebit {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299 u8 reg; /* byte pci reg holding the enable-bit */
1300 u8 mask; /* mask to isolate the enable-bit */
1301 u8 val; /* value of masked reg when "enabled" */
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001302};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303
1304enum {
1305 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001306 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001307 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001308 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001309 /* don't use legacy PIO blacklist */
1310 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
Bartlomiej Zolnierkiewicze277f912008-04-26 17:36:36 +02001311 /* set for the second port of QD65xx */
1312 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001313 /* use PIO8/9 for prefetch off/on */
1314 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1315 /* use PIO6/7 for fast-devsel off/on */
1316 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1317 /* use 100-102 and 200-202 PIO values to set DMA modes */
1318 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001319 /*
1320 * keep DMA setting when programming PIO mode, may be used only
1321 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1322 */
1323 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001324 /* program host for the transfer mode after programming device */
1325 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1326 /* don't program host/device for the transfer mode ("smart" hosts) */
1327 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001328 /* trust BIOS for programming chipset/device for DMA */
1329 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewiczcafa0272008-05-14 23:06:16 +02001330 /* host is CS5510/CS5520 */
1331 IDE_HFLAG_CS5520 = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001332 /* ATAPI DMA is unsupported */
1333 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001334 /* set if host is a "non-bootable" controller */
1335 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001336 /* host doesn't support DMA */
1337 IDE_HFLAG_NO_DMA = (1 << 14),
1338 /* check if host is PCI IDE device before allowing DMA */
1339 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +02001340 /* host uses MMIO */
1341 IDE_HFLAG_MMIO = (1 << 16),
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001342 /* no LBA48 */
1343 IDE_HFLAG_NO_LBA48 = (1 << 17),
1344 /* no LBA48 DMA */
1345 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001346 /* data FIFO is cleared by an error */
1347 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001348 /* serialize ports */
1349 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001350 /* use legacy IRQs */
1351 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001352 /* force use of legacy IRQs */
1353 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz1f660192008-12-29 20:27:34 +01001354 /* host is TRM290 */
1355 IDE_HFLAG_TRM290 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001356 /* use 32-bit I/O ops */
1357 IDE_HFLAG_IO_32BIT = (1 << 24),
1358 /* unmask IRQs */
1359 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001360 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
Bartlomiej Zolnierkiewicz1fd18902008-04-26 22:25:24 +02001361 /* serialize ports if DMA is possible (for sl82c105) */
1362 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001363 /* force host out of "simplex" mode */
1364 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001365 /* DSC overlap is unsupported */
1366 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001367 /* never use 32-bit I/O ops */
1368 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1369 /* never unmask IRQs */
1370 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001371};
1372
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001373#ifdef CONFIG_BLK_DEV_OFFBOARD
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001374# define IDE_HFLAG_OFF_BOARD 0
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001375#else
1376# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001377#endif
1378
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001379struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 char *name;
Bartlomiej Zolnierkiewicza326b022008-07-24 22:53:33 +02001381 unsigned int (*init_chipset)(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382 void (*init_iops)(ide_hwif_t *);
1383 void (*init_hwif)(ide_hwif_t *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001384 int (*init_dma)(ide_hwif_t *,
1385 const struct ide_port_info *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001386
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001387 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001388 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001389 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001390
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001391 struct ide_pci_enablebit enablebits[2];
1392
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001393 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz6b492492008-12-29 20:27:34 +01001394
1395 u16 max_sectors; /* if < than the default one */
1396
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001397 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001398 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001399 u8 swdma_mask;
1400 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001401 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001402};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +02001404int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1405int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1406 const struct ide_port_info *, void *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +02001407void ide_pci_remove(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +02001409#ifdef CONFIG_PM
1410int ide_pci_suspend(struct pci_dev *, pm_message_t);
1411int ide_pci_resume(struct pci_dev *);
1412#else
1413#define ide_pci_suspend NULL
1414#define ide_pci_resume NULL
1415#endif
1416
Linus Torvalds1da177e2005-04-16 15:20:36 -07001417void ide_map_sg(ide_drive_t *, struct request *);
1418void ide_init_sg_cmd(ide_drive_t *, struct request *);
1419
1420#define BAD_DMA_DRIVE 0
1421#define GOOD_DMA_DRIVE 1
1422
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001423struct drive_list_entry {
1424 const char *id_model;
1425 const char *id_firmware;
1426};
1427
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001428int ide_in_drive_list(u16 *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001429
1430#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001431int ide_dma_good_drive(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001433int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001434
1435u8 ide_find_dma_mode(ide_drive_t *, u8);
1436
1437static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1438{
1439 return ide_find_dma_mode(drive, XFER_UDMA_6);
1440}
1441
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001442void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001443void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001444void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001445int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001446void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447ide_startstop_t ide_dma_intr(ide_drive_t *);
1448
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001449int ide_allocate_dma_engine(ide_hwif_t *);
1450void ide_release_dma_engine(ide_hwif_t *);
1451
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001452int ide_build_sglist(ide_drive_t *, struct request *);
1453void ide_destroy_dmatable(ide_drive_t *);
1454
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001455#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001456int config_drive_for_dma(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457extern int ide_build_dmatable(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001458void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459extern int ide_dma_setup(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001460void ide_dma_exec_cmd(ide_drive_t *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461extern void ide_dma_start(ide_drive_t *);
Bartlomiej Zolnierkiewicz653bcf52008-10-13 21:39:46 +02001462int ide_dma_end(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001463int ide_dma_test_irq(ide_drive_t *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +01001464u8 ide_dma_sff_read_status(ide_hwif_t *);
Kevin Hilman71fc9fc2008-09-02 20:18:46 +02001465extern const struct ide_dma_ops sff_dma_ops;
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001466#else
1467static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001468#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001470void ide_dma_lost_irq(ide_drive_t *);
Bartlomiej Zolnierkiewiczffa15a62008-10-13 21:39:46 +02001471void ide_dma_timeout(ide_drive_t *);
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001472
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001474static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001475static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001476static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001477static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001478static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001479static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001481static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001482static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz0d1bad22008-04-26 22:25:19 +02001483static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001484#endif /* CONFIG_BLK_DEV_IDEDMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001486#ifdef CONFIG_BLK_DEV_IDEACPI
1487extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1488extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1489extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1490extern void ide_acpi_init(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001491void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001492extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001493#else
1494static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1495static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1496static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1497static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001498static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001499static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001500#endif
1501
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502void ide_register_region(struct gendisk *);
1503void ide_unregister_region(struct gendisk *);
1504
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001505void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001507void ide_port_apply_params(ide_hwif_t *);
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001508int ide_sysfs_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001509
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001510struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +02001511void ide_host_free(struct ide_host *);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001512int ide_host_register(struct ide_host *, const struct ide_port_info *,
1513 hw_regs_t **);
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +02001514int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1515 struct ide_host **);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001516void ide_host_remove(struct ide_host *);
Bartlomiej Zolnierkiewicz0bfeee72008-04-26 22:25:16 +02001517int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001518void ide_port_unregister_devices(ide_hwif_t *);
1519void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520
1521static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1522{
1523 return hwif->hwif_data;
1524}
1525
1526static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1527{
1528 hwif->hwif_data = data;
1529}
1530
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001531const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1533extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1534
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001535u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536u8 ide_dump_status(ide_drive_t *, const char *, u8);
1537
Bartlomiej Zolnierkiewicz3be53f32008-07-16 20:33:36 +02001538struct ide_timing {
1539 u8 mode;
1540 u8 setup; /* t1 */
1541 u16 act8b; /* t2 for 8-bit io */
1542 u16 rec8b; /* t2i for 8-bit io */
1543 u16 cyc8b; /* t0 for 8-bit io */
1544 u16 active; /* t2 or tD */
1545 u16 recover; /* t2i or tK */
1546 u16 cycle; /* t0 */
1547 u16 udma; /* t2CYCTYP/2 */
1548};
1549
1550enum {
1551 IDE_TIMING_SETUP = (1 << 0),
1552 IDE_TIMING_ACT8B = (1 << 1),
1553 IDE_TIMING_REC8B = (1 << 2),
1554 IDE_TIMING_CYC8B = (1 << 3),
1555 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1556 IDE_TIMING_CYC8B,
1557 IDE_TIMING_ACTIVE = (1 << 4),
1558 IDE_TIMING_RECOVER = (1 << 5),
1559 IDE_TIMING_CYCLE = (1 << 6),
1560 IDE_TIMING_UDMA = (1 << 7),
1561 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1562 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1563 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1564};
1565
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001566struct ide_timing *ide_timing_find_mode(u8);
Bartlomiej Zolnierkiewiczc9d6c1a2008-07-16 20:33:39 +02001567u16 ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001568void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1569 struct ide_timing *, unsigned int);
1570int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1571
Bartlomiej Zolnierkiewicz9ad54092008-07-16 20:33:39 +02001572int ide_scan_pio_blacklist(char *);
1573
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001574u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001576int ide_set_pio_mode(ide_drive_t *, u8);
1577int ide_set_dma_mode(ide_drive_t *, u8);
1578
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001579void ide_set_pio(ide_drive_t *, u8);
1580
1581static inline void ide_set_max_pio(ide_drive_t *drive)
1582{
1583 ide_set_pio(drive, 255);
1584}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001586char *ide_media_string(ide_drive_t *);
1587
1588extern struct device_attribute ide_dev_attrs[];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001590extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001592static inline void ide_dump_identify(u8 *id)
1593{
1594 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1595}
1596
Christoph Lameter86b37862005-08-09 19:59:21 -07001597static inline int hwif_to_node(ide_hwif_t *hwif)
1598{
Bartlomiej Zolnierkiewicz96f80212008-09-02 20:18:47 +02001599 return hwif->dev ? dev_to_node(hwif->dev) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001600}
1601
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +02001602static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001603{
Bartlomiej Zolnierkiewicz5e7f3a42009-01-06 17:20:56 +01001604 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001605
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +02001606 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001607}
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001608
1609#define ide_port_for_each_dev(i, dev, port) \
1610 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1611
1612#define ide_host_for_each_port(i, port, host) \
1613 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1614
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615#endif /* _IDE_H */