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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 Zolnierkiewiczd45b70a2009-03-24 23:22:54 +010029#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
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
Adrian Bunkc5bfc372008-08-05 18:17:01 +0200196#define MAX_HWIFS 10
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198/*
199 * Now for the data we need to maintain per-drive: ide_drive_t
200 */
201
202#define ide_scsi 0x21
203#define ide_disk 0x20
204#define ide_optical 0x7
205#define ide_cdrom 0x5
206#define ide_tape 0x1
207#define ide_floppy 0x0
208
209/*
210 * Special Driver Flags
211 *
212 * set_geometry : respecify drive geometry
213 * recalibrate : seek to cyl 0
214 * set_multmode : set multmode count
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 * reserved : unused
216 */
217typedef union {
218 unsigned all : 8;
219 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 unsigned set_geometry : 1;
221 unsigned recalibrate : 1;
222 unsigned set_multmode : 1;
Bartlomiej Zolnierkiewicz6982daf2008-10-13 21:39:40 +0200223 unsigned reserved : 5;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 } b;
225} special_t;
226
227/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 * Status returned from various ide_ functions
229 */
230typedef enum {
231 ide_stopped, /* no drive operation was started */
232 ide_started, /* a drive operation was started, handler was set */
233} ide_startstop_t;
234
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200235enum {
236 IDE_TFLAG_LBA48 = (1 << 0),
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100237 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 1),
238 IDE_TFLAG_OUT_HOB_NSECT = (1 << 2),
239 IDE_TFLAG_OUT_HOB_LBAL = (1 << 3),
240 IDE_TFLAG_OUT_HOB_LBAM = (1 << 4),
241 IDE_TFLAG_OUT_HOB_LBAH = (1 << 5),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200242 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
243 IDE_TFLAG_OUT_HOB_NSECT |
244 IDE_TFLAG_OUT_HOB_LBAL |
245 IDE_TFLAG_OUT_HOB_LBAM |
246 IDE_TFLAG_OUT_HOB_LBAH,
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100247 IDE_TFLAG_OUT_FEATURE = (1 << 6),
248 IDE_TFLAG_OUT_NSECT = (1 << 7),
249 IDE_TFLAG_OUT_LBAL = (1 << 8),
250 IDE_TFLAG_OUT_LBAM = (1 << 9),
251 IDE_TFLAG_OUT_LBAH = (1 << 10),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200252 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
253 IDE_TFLAG_OUT_NSECT |
254 IDE_TFLAG_OUT_LBAL |
255 IDE_TFLAG_OUT_LBAM |
256 IDE_TFLAG_OUT_LBAH,
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100257 IDE_TFLAG_OUT_DEVICE = (1 << 11),
258 IDE_TFLAG_WRITE = (1 << 12),
259 IDE_TFLAG_CUSTOM_HANDLER = (1 << 13),
260 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 14),
261 IDE_TFLAG_IN_HOB_FEATURE = (1 << 15),
262 IDE_TFLAG_IN_HOB_NSECT = (1 << 16),
263 IDE_TFLAG_IN_HOB_LBAL = (1 << 17),
264 IDE_TFLAG_IN_HOB_LBAM = (1 << 18),
265 IDE_TFLAG_IN_HOB_LBAH = (1 << 19),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200266 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
267 IDE_TFLAG_IN_HOB_LBAM |
268 IDE_TFLAG_IN_HOB_LBAH,
269 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
270 IDE_TFLAG_IN_HOB_NSECT |
271 IDE_TFLAG_IN_HOB_LBA,
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100272 IDE_TFLAG_IN_FEATURE = (1 << 20),
273 IDE_TFLAG_IN_NSECT = (1 << 21),
274 IDE_TFLAG_IN_LBAL = (1 << 22),
275 IDE_TFLAG_IN_LBAM = (1 << 23),
276 IDE_TFLAG_IN_LBAH = (1 << 24),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200277 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
278 IDE_TFLAG_IN_LBAM |
279 IDE_TFLAG_IN_LBAH,
280 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
281 IDE_TFLAG_IN_LBA,
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100282 IDE_TFLAG_IN_DEVICE = (1 << 25),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200283 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
284 IDE_TFLAG_IN_HOB,
285 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
286 IDE_TFLAG_IN_TF,
287 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
288 IDE_TFLAG_IN_DEVICE,
289 /* force 16-bit I/O operations */
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100290 IDE_TFLAG_IO_16BIT = (1 << 26),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200291 /* ide_task_t was allocated using kmalloc() */
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100292 IDE_TFLAG_DYN = (1 << 27),
293};
294
295enum {
296 IDE_FTFLAG_FLAGGED = (1 << 0),
297 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
298 IDE_FTFLAG_OUT_DATA = (1 << 2),
299 IDE_FTFLAG_IN_DATA = (1 << 3),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200300};
301
302struct ide_taskfile {
303 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
304
305 u8 hob_feature; /* 1-5: additional data to support LBA48 */
306 u8 hob_nsect;
307 u8 hob_lbal;
308 u8 hob_lbam;
309 u8 hob_lbah;
310
311 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
312
313 union { /*  7: */
314 u8 error; /* read: error */
315 u8 feature; /* write: feature */
316 };
317
318 u8 nsect; /* 8: number of sectors */
319 u8 lbal; /* 9: LBA low */
320 u8 lbam; /* 10: LBA mid */
321 u8 lbah; /* 11: LBA high */
322
323 u8 device; /* 12: device select */
324
325 union { /* 13: */
326 u8 status; /*  read: status  */
327 u8 command; /* write: command */
328 };
329};
330
331typedef struct ide_task_s {
332 union {
333 struct ide_taskfile tf;
334 u8 tf_array[14];
335 };
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100336 u8 ftf_flags; /* for TASKFILE ioctl */
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200337 u32 tf_flags;
338 int data_phase;
339 struct request *rq; /* copy of request */
340 void *special; /* valid_t generally */
341} ide_task_t;
342
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200343/* ATAPI packet command flags */
344enum {
345 /* set when an error is considered normal - no retry (ide-tape) */
346 PC_FLAG_ABORT = (1 << 0),
347 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
348 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
349 PC_FLAG_DMA_OK = (1 << 3),
350 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
351 PC_FLAG_DMA_ERROR = (1 << 5),
352 PC_FLAG_WRITING = (1 << 6),
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200353};
354
355/*
356 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
357 * This is used for several packet commands (not for READ/WRITE commands).
358 */
359#define IDE_PC_BUFFER_SIZE 256
Borislav Petkov4cad0852009-01-02 16:12:53 +0100360#define ATAPI_WAIT_PC (60 * HZ)
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200361
362struct ide_atapi_pc {
363 /* actual packet bytes */
364 u8 c[12];
365 /* incremented on each retry */
366 int retries;
367 int error;
368
369 /* bytes to transfer */
370 int req_xfer;
371 /* bytes actually transferred */
372 int xferred;
373
374 /* data buffer */
375 u8 *buf;
376 /* current buffer position */
377 u8 *cur_pos;
378 int buf_size;
379 /* missing/available data on the current buffer */
380 int b_count;
381
382 /* the corresponding request */
383 struct request *rq;
384
385 unsigned long flags;
386
387 /*
388 * those are more or less driver-specific and some of them are subject
389 * to change/removal later.
390 */
391 u8 pc_buf[IDE_PC_BUFFER_SIZE];
392
393 /* idetape only */
394 struct idetape_bh *bh;
395 char *b_data;
396
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200397 struct scatterlist *sg;
398 unsigned int sg_cnt;
399
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200400 unsigned long timeout;
401};
402
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200403struct ide_devset;
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100404struct ide_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100406#ifdef CONFIG_BLK_DEV_IDEACPI
407struct ide_acpi_drive_link;
408struct ide_acpi_hwif_link;
409#endif
410
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200411struct ide_drive_s;
412
413struct ide_disk_ops {
414 int (*check)(struct ide_drive_s *, const char *);
415 int (*get_capacity)(struct ide_drive_s *);
416 void (*setup)(struct ide_drive_s *);
417 void (*flush)(struct ide_drive_s *);
418 int (*init_media)(struct ide_drive_s *, struct gendisk *);
419 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
420 int);
421 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
422 sector_t);
423 int (*end_request)(struct ide_drive_s *, int, int);
Al Virobadf8082008-10-16 10:23:20 -0400424 int (*ioctl)(struct ide_drive_s *, struct block_device *,
425 fmode_t, unsigned int, unsigned long);
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200426};
427
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200428/* ATAPI device flags */
429enum {
430 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
Bartlomiej Zolnierkiewicz0578042d2008-10-10 22:39:38 +0200431
432 /* ide-cd */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200433 /* Drive cannot eject the disc. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100434 IDE_AFLAG_NO_EJECT = (1 << 1),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200435 /* Drive is a pre ATAPI 1.2 drive. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100436 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200437 /* TOC addresses are in BCD. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100438 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200439 /* TOC track numbers are in BCD. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100440 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200441 /*
442 * Drive does not provide data in multiples of SECTOR_SIZE
443 * when more than one interrupt is needed.
444 */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100445 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200446 /* Saved TOC information is current. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100447 IDE_AFLAG_TOC_VALID = (1 << 6),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200448 /* We think that the drive door is locked. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100449 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200450 /* SET_CD_SPEED command is unsupported. */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100451 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
452 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
453 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
454 IDE_AFLAG_SANYO_3CD = (1 << 11),
455 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
456 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
457 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200458
459 /* ide-floppy */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200460 /* Avoid commands not supported in Clik drive */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100461 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200462 /* Requires BH algorithm for packets */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100463 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200464 /* Supports format progress report */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100465 IDE_AFLAG_SRFP = (1 << 17),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200466
467 /* ide-tape */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100468 IDE_AFLAG_IGNORE_DSC = (1 << 18),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200469 /* 0 When the tape position is unknown */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100470 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200471 /* Device already opened */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100472 IDE_AFLAG_BUSY = (1 << 20),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200473 /* Attempt to auto-detect the current user block size */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100474 IDE_AFLAG_DETECT_BS = (1 << 21),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200475 /* Currently on a filemark */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100476 IDE_AFLAG_FILEMARK = (1 << 22),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200477 /* 0 = no tape is loaded, so we don't rewind after ejecting */
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100478 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
Borislav Petkovf20f2582008-10-05 18:23:27 +0200479
Borislav Petkovbf64741f2009-01-02 16:12:50 +0100480 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200481};
482
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200483/* device flags */
484enum {
485 /* restore settings after device reset */
486 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
487 /* device is using DMA for read/write */
488 IDE_DFLAG_USING_DMA = (1 << 1),
489 /* okay to unmask other IRQs */
490 IDE_DFLAG_UNMASK = (1 << 2),
491 /* don't attempt flushes */
492 IDE_DFLAG_NOFLUSH = (1 << 3),
493 /* DSC overlap */
494 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
495 /* give potential excess bandwidth */
496 IDE_DFLAG_NICE1 = (1 << 5),
497 /* device is physically present */
498 IDE_DFLAG_PRESENT = (1 << 6),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200499 /* id read from device (synthetic if not set) */
500 IDE_DFLAG_ID_READ = (1 << 8),
501 IDE_DFLAG_NOPROBE = (1 << 9),
502 /* need to do check_media_change() */
503 IDE_DFLAG_REMOVABLE = (1 << 10),
504 /* needed for removable devices */
505 IDE_DFLAG_ATTACH = (1 << 11),
506 IDE_DFLAG_FORCED_GEOM = (1 << 12),
507 /* disallow setting unmask bit */
508 IDE_DFLAG_NO_UNMASK = (1 << 13),
509 /* disallow enabling 32-bit I/O */
510 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
511 /* for removable only: door lock/unlock works */
512 IDE_DFLAG_DOORLOCKING = (1 << 15),
513 /* disallow DMA */
514 IDE_DFLAG_NODMA = (1 << 16),
515 /* powermanagment told us not to do anything, so sleep nicely */
516 IDE_DFLAG_BLOCKED = (1 << 17),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200517 /* sleeping & sleep field valid */
Borislav Petkov53174642009-01-02 16:12:54 +0100518 IDE_DFLAG_SLEEPING = (1 << 18),
519 IDE_DFLAG_POST_RESET = (1 << 19),
520 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
521 IDE_DFLAG_LBA48 = (1 << 21),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200522 /* status of write cache */
Borislav Petkov53174642009-01-02 16:12:54 +0100523 IDE_DFLAG_WCACHE = (1 << 22),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200524 /* used for ignoring ATA_DF */
Borislav Petkov53174642009-01-02 16:12:54 +0100525 IDE_DFLAG_NOWERR = (1 << 23),
Bartlomiej Zolnierkiewiczc3922042008-10-13 21:39:37 +0200526 /* retrying in PIO */
Borislav Petkov53174642009-01-02 16:12:54 +0100527 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
528 IDE_DFLAG_LBA = (1 << 25),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200529 /* don't unload heads */
Borislav Petkov53174642009-01-02 16:12:54 +0100530 IDE_DFLAG_NO_UNLOAD = (1 << 26),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200531 /* heads unloaded, please don't reset port */
Borislav Petkov53174642009-01-02 16:12:54 +0100532 IDE_DFLAG_PARKED = (1 << 27),
533 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200534 /* write protect */
Borislav Petkov53174642009-01-02 16:12:54 +0100535 IDE_DFLAG_WP = (1 << 29),
536 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200537};
538
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200539struct ide_drive_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 char name[4]; /* drive name, such as "hda" */
541 char driver_req[10]; /* requests specific driver */
542
Jens Axboe165125e2007-07-24 09:28:11 +0200543 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
545 struct request *rq; /* current request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 void *driver_data; /* extra driver data */
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200547 u16 *id; /* identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200548#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200550 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200551#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
553
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200554 const struct ide_disk_ops *disk_ops;
555
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200556 unsigned long dev_flags;
557
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 unsigned long sleep; /* sleep until this time */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 unsigned long timeout; /* max time to wait for irq */
560
561 special_t special; /* special action flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Bartlomiej Zolnierkiewicz7f612f22008-10-13 21:39:40 +0200563 u8 select; /* basic drive/head select reg value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 u8 retry_pio; /* retrying dma capable host in pio */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 u8 waiting_for_dma; /* dma currently in progress */
Borislav Petkov0a9b6f882008-10-13 21:39:49 +0200566 u8 dma; /* atapi dma flag */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 u8 quirk_list; /* considered quirky, set for a specific host */
569 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200571 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 u8 dn; /* now wide spread use */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 u8 acoustic; /* acoustic management */
574 u8 media; /* disk, cdrom, tape, floppy, ... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 u8 ready_stat; /* min status value for drive ready */
576 u8 mult_count; /* current multiple sector setting */
577 u8 mult_req; /* requested multiple sector setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200579 u8 bad_wstat; /* used for ignoring ATA_DF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 u8 head; /* "real" number of heads */
581 u8 sect; /* "real" sectors per track */
582 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
583 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
584
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200585 /* delay this long before sending packet command */
586 u8 pc_delay;
587
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
589 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200590 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 unsigned int failures; /* current failure count */
592 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700593 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
595 u64 capacity64; /* total number of sectors */
596
597 int lun; /* logical unit */
598 int crc_count; /* crc counter to reduce drive speed */
Borislav Petkovb22b2ca2008-10-13 21:39:34 +0200599
600 unsigned long debug_mask; /* debugging levels switch */
601
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100602#ifdef CONFIG_BLK_DEV_IDEACPI
603 struct ide_acpi_drive_link *acpidata;
604#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 struct list_head list;
606 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800607 struct completion gendev_rel_comp; /* to deal with device release() */
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200608
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200609 /* current packet command */
610 struct ide_atapi_pc *pc;
611
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200612 /* callback for packet commands */
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200613 void (*pc_callback)(struct ide_drive_s *, int);
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200614
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200615 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
616 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
617 unsigned int, int);
618
Borislav Petkovd6251d442009-01-06 17:20:58 +0100619 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
620
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200621 unsigned long atapi_flags;
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200622
623 struct ide_atapi_pc request_sense_pc;
624 struct request request_sense_rq;
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200625};
626
627typedef struct ide_drive_s ide_drive_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200629#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
630
631#define to_ide_drv(obj, cont_type) \
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +0100632 container_of(obj, struct cont_type, dev)
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200633
634#define ide_drv_g(disk, cont_type) \
635 container_of((disk)->private_data, struct cont_type, driver)
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200636
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200637struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200639struct ide_tp_ops {
640 void (*exec_command)(struct hwif_s *, u8);
641 u8 (*read_status)(struct hwif_s *);
642 u8 (*read_altstatus)(struct hwif_s *);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200643
644 void (*set_irq)(struct hwif_s *, int);
645
646 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
647 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
648
649 void (*input_data)(ide_drive_t *, struct request *, void *,
650 unsigned int);
651 void (*output_data)(ide_drive_t *, struct request *, void *,
652 unsigned int);
653};
654
655extern const struct ide_tp_ops default_tp_ops;
656
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200657/**
658 * struct ide_port_ops - IDE port operations
659 *
660 * @init_dev: host specific initialization of a device
661 * @set_pio_mode: routine to program host for PIO mode
662 * @set_dma_mode: routine to program host for DMA mode
663 * @selectproc: tweaks hardware to select drive
664 * @reset_poll: chipset polling based on hba specifics
665 * @pre_reset: chipset specific changes to default for device-hba resets
666 * @resetproc: routine to reset controller after a disk reset
667 * @maskproc: special host masking for drive selection
668 * @quirkproc: check host's drive quirk list
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200669 * @clear_irq: clear IRQ
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200670 *
671 * @mdma_filter: filter MDMA modes
672 * @udma_filter: filter UDMA modes
673 *
674 * @cable_detect: detect cable type
675 */
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200676struct ide_port_ops {
Bartlomiej Zolnierkiewicze6d95bd2008-07-16 20:33:42 +0200677 void (*init_dev)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200678 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200679 void (*set_dma_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200680 void (*selectproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200681 int (*reset_poll)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200682 void (*pre_reset)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200683 void (*resetproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200684 void (*maskproc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200685 void (*quirkproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200686 void (*clear_irq)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200687
688 u8 (*mdma_filter)(ide_drive_t *);
689 u8 (*udma_filter)(ide_drive_t *);
690
691 u8 (*cable_detect)(struct hwif_s *);
692};
693
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200694struct ide_dma_ops {
695 void (*dma_host_set)(struct ide_drive_s *, int);
696 int (*dma_setup)(struct ide_drive_s *);
697 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
698 void (*dma_start)(struct ide_drive_s *);
699 int (*dma_end)(struct ide_drive_s *);
700 int (*dma_test_irq)(struct ide_drive_s *);
701 void (*dma_lost_irq)(struct ide_drive_s *);
702 void (*dma_timeout)(struct ide_drive_s *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +0100703 /*
704 * The following method is optional and only required to be
705 * implemented for the SFF-8038i compatible controllers.
706 */
707 u8 (*dma_sff_read_status)(struct hwif_s *);
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200708};
709
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200710struct ide_host;
711
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712typedef struct hwif_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 struct hwif_s *mate; /* other hwif from same PCI chip */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
715
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200716 struct ide_host *host;
717
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 char name[6]; /* name of interface, eg. "ide0" */
719
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200720 struct ide_io_ports io_ports;
721
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100724 ide_drive_t *devices[MAX_DRIVES + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
726 u8 major; /* our major number */
727 u8 index; /* 0 for ide0; 1 for ide1; ... */
728 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
David Millere95d9c62007-10-22 02:09:00 -0700730 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200731
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200732 u8 pio_mask;
733
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 u8 ultra_mask;
735 u8 mwdma_mask;
736 u8 swdma_mask;
737
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200738 u8 cbl; /* cable type */
739
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 hwif_chipset_t chipset; /* sub-module for tuning.. */
741
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100742 struct device *dev;
743
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200744 ide_ack_intr_t *ack_intr;
745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 void (*rw_disk)(ide_drive_t *, struct request *);
747
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200748 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200749 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200750 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100751
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 /* dma physical region descriptor table (cpu view) */
753 unsigned int *dmatable_cpu;
754 /* dma physical region descriptor table (dma view) */
755 dma_addr_t dmatable_dma;
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200756
757 /* maximum number of PRD table entries */
758 int prd_max_nents;
759 /* PRD entry size in bytes */
760 int prd_ent_size;
761
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 /* Scatter-gather list used to build the above */
763 struct scatterlist *sg_table;
764 int sg_max_nents; /* Maximum number of entries in it */
765 int sg_nents; /* Current number of entries in it */
FUJITA Tomonori5d827202009-03-13 21:16:13 +0100766 int orig_sg_nents;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 int sg_dma_direction; /* dma transfer direction */
768
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200769 struct ide_task_s task; /* current command */
770
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 unsigned int nsect;
772 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200773 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 unsigned int cursg_ofs;
775
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 int rqsize; /* max sectors per request */
777 int irq; /* our irq number */
778
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 unsigned long dma_base; /* base addr for dma ports */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 unsigned long config_data; /* for use by chipset-specific code */
782 unsigned long select_data; /* for use by chipset-specific code */
783
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700784 unsigned long extra_base; /* extra addr for dma ports */
785 unsigned extra_ports; /* number of extra dma ports */
786
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 unsigned present : 1; /* this interface exists */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100788 unsigned busy : 1; /* serializes devices on a port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200790 struct device gendev;
791 struct device *portdev;
792
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800793 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794
795 void *hwif_data; /* extra hwif data */
796
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100797#ifdef CONFIG_BLK_DEV_IDEACPI
798 struct ide_acpi_hwif_link *acpidata;
799#endif
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100800
801 /* IRQ handler, if active */
802 ide_startstop_t (*handler)(ide_drive_t *);
803
804 /* BOOL: polling active & poll_timeout field valid */
805 unsigned int polling : 1;
806
807 /* current drive */
808 ide_drive_t *cur_dev;
809
810 /* current request */
811 struct request *rq;
812
813 /* failsafe timer */
814 struct timer_list timer;
815 /* timeout value during long polls */
816 unsigned long poll_timeout;
817 /* queried upon timeouts */
818 int (*expiry)(ide_drive_t *);
819
820 int req_gen;
821 int req_gen_timer;
822
823 spinlock_t lock;
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800824} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825
Bartlomiej Zolnierkiewicza36223b2008-10-13 21:39:43 +0200826#define MAX_HOST_PORTS 4
827
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200828struct ide_host {
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100829 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200830 unsigned int n_ports;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200831 struct device *dev[2];
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100832
Bartlomiej Zolnierkiewicz2ed0ef52009-03-24 23:22:53 +0100833 int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100834
835 void (*get_lock)(irq_handler_t, void *);
836 void (*release_lock)(void);
837
Stanislaw Gruszka849d7132009-03-05 16:10:57 +0100838 irq_handler_t irq_handler;
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100839
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +0200840 unsigned long host_flags;
Bartlomiej Zolnierkiewicz255115fb2009-03-27 12:46:27 +0100841
842 int irq_flags;
843
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200844 void *host_priv;
Bartlomiej Zolnierkiewiczbd53cbc2009-01-06 17:20:48 +0100845 ide_hwif_t *cur_port; /* for hosts requiring serialization */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100846
847 /* used for hosts requiring serialization */
Ben Dookse720b9e2009-01-14 19:19:04 +0100848 volatile unsigned long host_busy;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200849};
850
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100851#define IDE_HOST_BUSY 0
852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853/*
854 * internal ide interrupt handler type
855 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
857typedef int (ide_expiry_t)(ide_drive_t *);
858
Borislav Petkov0eea6452008-02-02 19:56:36 +0100859/* used by ide-cd, ide-floppy, etc. */
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200860typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
Borislav Petkov0eea6452008-02-02 19:56:36 +0100861
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200862extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200863
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200864/*
865 * configurable drive settings
866 */
867
868#define DS_SYNC (1 << 0)
869
870struct ide_devset {
871 int (*get)(ide_drive_t *);
872 int (*set)(ide_drive_t *, int);
873 unsigned int flags;
874};
875
876#define __DEVSET(_flags, _get, _set) { \
877 .flags = _flags, \
878 .get = _get, \
879 .set = _set, \
880}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200881
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200882#define ide_devset_get(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200883static int get_##name(ide_drive_t *drive) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200884{ \
885 return drive->field; \
886}
887
888#define ide_devset_set(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200889static int set_##name(ide_drive_t *drive, int arg) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200890{ \
891 drive->field = arg; \
892 return 0; \
893}
894
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200895#define ide_devset_get_flag(name, flag) \
896static int get_##name(ide_drive_t *drive) \
897{ \
898 return !!(drive->dev_flags & flag); \
899}
900
901#define ide_devset_set_flag(name, flag) \
902static int set_##name(ide_drive_t *drive, int arg) \
903{ \
904 if (arg) \
905 drive->dev_flags |= flag; \
906 else \
907 drive->dev_flags &= ~flag; \
908 return 0; \
909}
910
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200911#define __IDE_DEVSET(_name, _flags, _get, _set) \
912const struct ide_devset ide_devset_##_name = \
913 __DEVSET(_flags, _get, _set)
914
915#define IDE_DEVSET(_name, _flags, _get, _set) \
916static __IDE_DEVSET(_name, _flags, _get, _set)
917
918#define ide_devset_rw(_name, _func) \
919IDE_DEVSET(_name, 0, get_##_func, set_##_func)
920
921#define ide_devset_w(_name, _func) \
922IDE_DEVSET(_name, 0, NULL, set_##_func)
923
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200924#define ide_ext_devset_rw(_name, _func) \
925__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
926
927#define ide_ext_devset_rw_sync(_name, _func) \
928__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200929
930#define ide_decl_devset(_name) \
931extern const struct ide_devset ide_devset_##_name
932
933ide_decl_devset(io_32bit);
934ide_decl_devset(keepsettings);
935ide_decl_devset(pio_mode);
936ide_decl_devset(unmaskirq);
937ide_decl_devset(using_dma);
938
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200939#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 * /proc/ide interface
942 */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200943
944#define ide_devset_rw_field(_name, _field) \
945ide_devset_get(_name, _field); \
946ide_devset_set(_name, _field); \
947IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
948
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200949#define ide_devset_rw_flag(_name, _field) \
950ide_devset_get_flag(_name, _field); \
951ide_devset_set_flag(_name, _field); \
952IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
953
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200954struct ide_proc_devset {
955 const char *name;
956 const struct ide_devset *setting;
957 int min, max;
958 int (*mulf)(ide_drive_t *);
959 int (*divf)(ide_drive_t *);
960};
961
962#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
963 .name = __stringify(_name), \
964 .setting = &ide_devset_##_name, \
965 .min = _min, \
966 .max = _max, \
967 .mulf = _mulf, \
968 .divf = _divf, \
969}
970
971#define IDE_PROC_DEVSET(_name, _min, _max) \
972__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
973
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974typedef struct {
975 const char *name;
976 mode_t mode;
977 read_proc_t *read_proc;
978 write_proc_t *write_proc;
979} ide_proc_entry_t;
980
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200981void proc_ide_create(void);
982void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200983void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100984void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200985void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200986void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100987void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
988void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200989
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990read_proc_t proc_ide_read_capacity;
991read_proc_t proc_ide_read_geometry;
992
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993/*
994 * Standard exit stuff:
995 */
996#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
997{ \
998 len -= off; \
999 if (len < count) { \
1000 *eof = 1; \
1001 if (len <= 0) \
1002 return 0; \
1003 } else \
1004 len = count; \
1005 *start = page + off; \
1006 return len; \
1007}
1008#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001009static inline void proc_ide_create(void) { ; }
1010static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001011static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +01001012static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +02001013static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001014static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001015static inline void ide_proc_register_driver(ide_drive_t *drive,
1016 struct ide_driver *driver) { ; }
1017static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1018 struct ide_driver *driver) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1020#endif
1021
Borislav Petkove1c7c462008-10-13 21:39:35 +02001022enum {
1023 /* enter/exit functions */
1024 IDE_DBG_FUNC = (1 << 0),
1025 /* sense key/asc handling */
1026 IDE_DBG_SENSE = (1 << 1),
1027 /* packet commands handling */
1028 IDE_DBG_PC = (1 << 2),
1029 /* request handling */
1030 IDE_DBG_RQ = (1 << 3),
1031 /* driver probing/setup */
1032 IDE_DBG_PROBE = (1 << 4),
1033};
1034
1035/* DRV_NAME has to be defined in the driver before using the macro below */
Borislav Petkov088b1b82009-01-02 13:34:47 +01001036#define __ide_debug_log(lvl, fmt, args...) \
1037{ \
1038 if (unlikely(drive->debug_mask & lvl)) \
1039 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1040 __func__, ## args); \
Borislav Petkove1c7c462008-10-13 21:39:35 +02001041}
1042
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043/*
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001044 * Power Management state machine (rq->pm->pm_step).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001046 * For each step, the core calls ide_start_power_step() first.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 * This can return:
1048 * - ide_stopped : In this case, the core calls us back again unless
1049 * step have been set to ide_power_state_completed.
1050 * - ide_started : In this case, the channel is left busy until an
1051 * async event (interrupt) occurs.
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001052 * Typically, ide_start_power_step() will issue a taskfile request with
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 * do_rw_taskfile().
1054 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001055 * Upon reception of the interrupt, the core will call ide_complete_power_step()
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056 * with the error code if any. This routine should update the step value
1057 * and return. It should not start a new request. The core will call
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001058 * ide_start_power_step() for the new step value, unless step have been
1059 * set to IDE_PM_COMPLETED.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061enum {
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001062 IDE_PM_START_SUSPEND,
1063 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1064 IDE_PM_STANDBY,
1065
1066 IDE_PM_START_RESUME,
1067 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1068 IDE_PM_IDLE,
1069 IDE_PM_RESTORE_DMA,
1070
1071 IDE_PM_COMPLETED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072};
1073
Bartlomiej Zolnierkiewicze2984c62008-12-29 20:27:37 +01001074int generic_ide_suspend(struct device *, pm_message_t);
1075int generic_ide_resume(struct device *);
1076
1077void ide_complete_power_step(ide_drive_t *, struct request *);
1078ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz3616b652009-03-27 12:46:29 +01001079void ide_complete_pm_rq(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicze2984c62008-12-29 20:27:37 +01001080void ide_check_pm_state(ide_drive_t *, struct request *);
1081
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082/*
1083 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001084 *
1085 * The gendriver.owner field should be set to the module owner of this driver.
1086 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087 */
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001088struct ide_driver {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 const char *version;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1091 int (*end_request)(ide_drive_t *, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +00001093 int (*probe)(ide_drive_t *);
1094 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +02001095 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +00001096 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001097#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001098 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1099 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001100#endif
1101};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001103#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
Russell King4031bbe2006-01-06 11:41:00 +00001104
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +02001105int ide_device_get(ide_drive_t *);
1106void ide_device_put(ide_drive_t *);
1107
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001108struct ide_ioctl_devset {
1109 unsigned int get_ioctl;
1110 unsigned int set_ioctl;
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001111 const struct ide_devset *setting;
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001112};
1113
1114int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1115 unsigned long, const struct ide_ioctl_devset *);
1116
Al Viro1bddd9e2008-09-02 17:19:43 -04001117int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118
Bartlomiej Zolnierkiewiczebae41a2008-04-27 15:38:29 +02001119extern int ide_vlb_clk;
1120extern int ide_pci_clk;
1121
Bartlomiej Zolnierkiewicz327fa1c2009-03-24 23:22:47 +01001122int ide_end_request(ide_drive_t *, int, int);
1123int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
1124void ide_kill_rq(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125
Bartlomiej Zolnierkiewicz327fa1c2009-03-24 23:22:47 +01001126void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1127 ide_expiry_t *);
1128void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1129 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +01001131void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1132 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
Bartlomiej Zolnierkiewicz1fc142582008-04-28 23:44:39 +02001134void ide_execute_pkt_cmd(ide_drive_t *);
1135
Bartlomiej Zolnierkiewicz9f87abe2008-04-28 23:44:41 +02001136void ide_pad_transfer(ide_drive_t *, int, int);
1137
Bartlomiej Zolnierkiewicz9892ec52009-01-06 17:20:53 +01001138ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001140void ide_fix_driveid(u16 *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +01001141
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142extern void ide_fixstring(u8 *, const int, const int);
1143
Bartlomiej Zolnierkiewiczb163f462008-10-10 22:39:23 +02001144int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1145
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +02001146int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147
Bartlomiej Zolnierkiewiczc4e66c32009-03-24 23:22:44 +01001148ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz11938c92009-03-24 23:22:44 +01001149ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewiczc4e66c32009-03-24 23:22:44 +01001150
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151extern ide_startstop_t ide_do_reset (ide_drive_t *);
1152
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001153extern int ide_devset_execute(ide_drive_t *drive,
1154 const struct ide_devset *setting, int arg);
1155
Bartlomiej Zolnierkiewicza09485d2009-03-27 12:46:31 +01001156void ide_complete_task(ide_drive_t *, ide_task_t *, u8, u8);
1157void ide_complete_rq(ide_drive_t *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +02001159void ide_tf_dump(const char *, struct ide_taskfile *);
1160
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001161void ide_exec_command(ide_hwif_t *, u8);
1162u8 ide_read_status(ide_hwif_t *);
1163u8 ide_read_altstatus(ide_hwif_t *);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001164
1165void ide_set_irq(ide_hwif_t *, int);
1166
1167void ide_tf_load(ide_drive_t *, ide_task_t *);
1168void ide_tf_read(ide_drive_t *, ide_task_t *);
1169
1170void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1171void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1172
Bartlomiej Zolnierkiewiczacaa0f52008-10-10 22:39:36 +02001173int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1174
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175extern void SELECT_DRIVE(ide_drive_t *);
Bartlomiej Zolnierkiewiczed4af482008-07-15 21:21:48 +02001176void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001178u8 ide_read_error(ide_drive_t *);
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +02001179void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001180
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +02001181int ide_check_atapi_device(ide_drive_t *, const char *);
1182
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +02001183void ide_init_pc(struct ide_atapi_pc *);
1184
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +02001185/* Disk head parking */
1186extern wait_queue_head_t ide_park_wq;
1187ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1188 char *buf);
1189ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1190 const char *buf, size_t len);
1191
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001192/*
1193 * Special requests for ide-tape block device strategy routine.
1194 *
1195 * In order to service a character device command, we add special requests to
1196 * the tail of our block device request queue and wait for their completion.
1197 */
1198enum {
1199 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1200 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1201 REQ_IDETAPE_READ = (1 << 2),
1202 REQ_IDETAPE_WRITE = (1 << 3),
1203};
1204
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +02001205int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001206
Bartlomiej Zolnierkiewiczde699ad2008-10-10 22:39:39 +02001207int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz0c8a6c72008-10-10 22:39:39 +02001208int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz0578042d2008-10-10 22:39:38 +02001209int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz6b0da282008-10-13 21:39:32 +02001210void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1211void ide_retry_pc(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz0578042d2008-10-10 22:39:38 +02001212
Borislav Petkov4cad0852009-01-02 16:12:53 +01001213int ide_cd_expiry(ide_drive_t *);
Bartlomiej Zolnierkiewicz844b9462008-10-13 21:39:31 +02001214
Borislav Petkov392de1d2009-01-02 16:12:52 +01001215int ide_cd_get_xferlen(struct request *);
1216
Borislav Petkov28ad91d2009-01-02 16:12:56 +01001217ide_startstop_t ide_issue_pc(ide_drive_t *);
Bartlomiej Zolnierkiewicz594c16d2008-07-15 21:21:58 +02001218
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +01001219ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220
Tejun Heo4d7a9842008-01-26 20:13:11 +01001221void task_end_request(ide_drive_t *, struct request *, u8);
1222
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +01001223int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +01001224int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1225
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001227
Bartlomiej Zolnierkiewicz2ebe1d92009-03-24 23:22:59 +01001228int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1229
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231extern int ide_config_drive_speed(ide_drive_t *, u8);
1232extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1234
1235extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1238
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +01001240extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001241extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242
1243void ide_init_disk(struct gendisk *, ide_drive_t *);
1244
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001245#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001246extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1247#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001248#else
1249#define ide_pci_register_driver(d) pci_register_driver(d)
1250#endif
1251
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001252static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1253{
1254 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1255 return 1;
1256 return 0;
1257}
1258
Bartlomiej Zolnierkiewicz86ccf37c2009-03-24 23:22:53 +01001259void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001260 hw_regs_t *, hw_regs_t **);
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001261void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001263#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001264int ide_pci_set_master(struct pci_dev *, const char *);
1265unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczebb00fb2008-07-23 19:55:51 +02001266int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001267int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001268#else
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001269static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1270 const struct ide_port_info *d)
1271{
1272 return -EINVAL;
1273}
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001274#endif
1275
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001276struct ide_pci_enablebit {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277 u8 reg; /* byte pci reg holding the enable-bit */
1278 u8 mask; /* mask to isolate the enable-bit */
1279 u8 val; /* value of masked reg when "enabled" */
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001280};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281
1282enum {
1283 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001284 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001285 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001286 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001287 /* don't use legacy PIO blacklist */
1288 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
Bartlomiej Zolnierkiewicze277f912008-04-26 17:36:36 +02001289 /* set for the second port of QD65xx */
1290 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001291 /* use PIO8/9 for prefetch off/on */
1292 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1293 /* use PIO6/7 for fast-devsel off/on */
1294 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1295 /* use 100-102 and 200-202 PIO values to set DMA modes */
1296 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001297 /*
1298 * keep DMA setting when programming PIO mode, may be used only
1299 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1300 */
1301 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001302 /* program host for the transfer mode after programming device */
1303 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1304 /* don't program host/device for the transfer mode ("smart" hosts) */
1305 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001306 /* trust BIOS for programming chipset/device for DMA */
1307 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewiczcafa0272008-05-14 23:06:16 +02001308 /* host is CS5510/CS5520 */
1309 IDE_HFLAG_CS5520 = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001310 /* ATAPI DMA is unsupported */
1311 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001312 /* set if host is a "non-bootable" controller */
1313 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001314 /* host doesn't support DMA */
1315 IDE_HFLAG_NO_DMA = (1 << 14),
1316 /* check if host is PCI IDE device before allowing DMA */
1317 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +02001318 /* host uses MMIO */
1319 IDE_HFLAG_MMIO = (1 << 16),
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001320 /* no LBA48 */
1321 IDE_HFLAG_NO_LBA48 = (1 << 17),
1322 /* no LBA48 DMA */
1323 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001324 /* data FIFO is cleared by an error */
1325 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001326 /* serialize ports */
1327 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz2787cb82009-03-27 12:46:28 +01001328 /* host is DTC2278 */
1329 IDE_HFLAG_DTC2278 = (1 << 21),
Bartlomiej Zolnierkiewiczc094ea02009-03-27 12:46:28 +01001330 /* 4 devices on a single set of I/O ports */
1331 IDE_HFLAG_4DRIVES = (1 << 22),
Bartlomiej Zolnierkiewicz1f660192008-12-29 20:27:34 +01001332 /* host is TRM290 */
1333 IDE_HFLAG_TRM290 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001334 /* use 32-bit I/O ops */
1335 IDE_HFLAG_IO_32BIT = (1 << 24),
1336 /* unmask IRQs */
1337 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001338 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
Bartlomiej Zolnierkiewicz1fd18902008-04-26 22:25:24 +02001339 /* serialize ports if DMA is possible (for sl82c105) */
1340 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001341 /* force host out of "simplex" mode */
1342 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001343 /* DSC overlap is unsupported */
1344 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001345 /* never use 32-bit I/O ops */
1346 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1347 /* never unmask IRQs */
1348 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349};
1350
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001351#ifdef CONFIG_BLK_DEV_OFFBOARD
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001352# define IDE_HFLAG_OFF_BOARD 0
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001353#else
1354# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001355#endif
1356
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001357struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358 char *name;
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +01001359
Bartlomiej Zolnierkiewicz2ed0ef52009-03-24 23:22:53 +01001360 int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +01001361
1362 void (*get_lock)(irq_handler_t, void *);
1363 void (*release_lock)(void);
1364
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 void (*init_iops)(ide_hwif_t *);
1366 void (*init_hwif)(ide_hwif_t *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001367 int (*init_dma)(ide_hwif_t *,
1368 const struct ide_port_info *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001369
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001370 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001371 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001372 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001373
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001374 struct ide_pci_enablebit enablebits[2];
1375
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001376 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz6b492492008-12-29 20:27:34 +01001377
1378 u16 max_sectors; /* if < than the default one */
1379
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001380 u32 host_flags;
Bartlomiej Zolnierkiewicz255115fb2009-03-27 12:46:27 +01001381
1382 int irq_flags;
1383
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001384 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001385 u8 swdma_mask;
1386 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001387 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001388};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +02001390int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1391int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1392 const struct ide_port_info *, void *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +02001393void ide_pci_remove(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001394
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +02001395#ifdef CONFIG_PM
1396int ide_pci_suspend(struct pci_dev *, pm_message_t);
1397int ide_pci_resume(struct pci_dev *);
1398#else
1399#define ide_pci_suspend NULL
1400#define ide_pci_resume NULL
1401#endif
1402
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403void ide_map_sg(ide_drive_t *, struct request *);
1404void ide_init_sg_cmd(ide_drive_t *, struct request *);
1405
1406#define BAD_DMA_DRIVE 0
1407#define GOOD_DMA_DRIVE 1
1408
Jordan Crouse65e5f2e32005-12-15 02:16:18 +01001409struct drive_list_entry {
1410 const char *id_model;
1411 const char *id_firmware;
1412};
1413
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001414int ide_in_drive_list(u16 *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001415
1416#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001417int ide_dma_good_drive(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001419int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +02001420
1421u8 ide_find_dma_mode(ide_drive_t *, u8);
1422
1423static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1424{
1425 return ide_find_dma_mode(drive, XFER_UDMA_6);
1426}
1427
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001428void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001429void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001430void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001431int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001432void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433ide_startstop_t ide_dma_intr(ide_drive_t *);
1434
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001435int ide_allocate_dma_engine(ide_hwif_t *);
1436void ide_release_dma_engine(ide_hwif_t *);
1437
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001438int ide_build_sglist(ide_drive_t *, struct request *);
1439void ide_destroy_dmatable(ide_drive_t *);
1440
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001441#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001442int config_drive_for_dma(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443extern int ide_build_dmatable(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001444void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445extern int ide_dma_setup(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001446void ide_dma_exec_cmd(ide_drive_t *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447extern void ide_dma_start(ide_drive_t *);
Bartlomiej Zolnierkiewicz653bcf52008-10-13 21:39:46 +02001448int ide_dma_end(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001449int ide_dma_test_irq(ide_drive_t *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +01001450u8 ide_dma_sff_read_status(ide_hwif_t *);
Kevin Hilman71fc9fc2008-09-02 20:18:46 +02001451extern const struct ide_dma_ops sff_dma_ops;
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001452#else
1453static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001454#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001456void ide_dma_lost_irq(ide_drive_t *);
Bartlomiej Zolnierkiewiczffa15a62008-10-13 21:39:46 +02001457void ide_dma_timeout(ide_drive_t *);
Bartlomiej Zolnierkiewicz65ca5372009-03-24 23:22:43 +01001458ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001459
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001461static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +02001462static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001463static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001464static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001465static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001466static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001468static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001469static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz65ca5372009-03-24 23:22:43 +01001470static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
Bartlomiej Zolnierkiewicz0d1bad22008-04-26 22:25:19 +02001471static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001472#endif /* CONFIG_BLK_DEV_IDEDMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001474#ifdef CONFIG_BLK_DEV_IDEACPI
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001475int ide_acpi_init(void);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001476extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1477extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1478extern void ide_acpi_push_timing(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001479void ide_acpi_init_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001480void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001481extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001482#else
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001483static inline int ide_acpi_init(void) { return 0; }
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001484static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1485static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1486static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001487static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001488static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001489static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001490#endif
1491
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492void ide_register_region(struct gendisk *);
1493void ide_unregister_region(struct gendisk *);
1494
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001495void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001497void ide_port_apply_params(ide_hwif_t *);
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001498int ide_sysfs_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001499
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001500struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +02001501void ide_host_free(struct ide_host *);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001502int ide_host_register(struct ide_host *, const struct ide_port_info *,
1503 hw_regs_t **);
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +02001504int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1505 struct ide_host **);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001506void ide_host_remove(struct ide_host *);
Bartlomiej Zolnierkiewicz0bfeee7d2008-04-26 22:25:16 +02001507int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001508void ide_port_unregister_devices(ide_hwif_t *);
1509void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510
1511static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1512{
1513 return hwif->hwif_data;
1514}
1515
1516static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1517{
1518 hwif->hwif_data = data;
1519}
1520
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521extern void ide_toggle_bounce(ide_drive_t *drive, int on);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001523u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524u8 ide_dump_status(ide_drive_t *, const char *, u8);
1525
Bartlomiej Zolnierkiewicz3be53f32008-07-16 20:33:36 +02001526struct ide_timing {
1527 u8 mode;
1528 u8 setup; /* t1 */
1529 u16 act8b; /* t2 for 8-bit io */
1530 u16 rec8b; /* t2i for 8-bit io */
1531 u16 cyc8b; /* t0 for 8-bit io */
1532 u16 active; /* t2 or tD */
1533 u16 recover; /* t2i or tK */
1534 u16 cycle; /* t0 */
1535 u16 udma; /* t2CYCTYP/2 */
1536};
1537
1538enum {
1539 IDE_TIMING_SETUP = (1 << 0),
1540 IDE_TIMING_ACT8B = (1 << 1),
1541 IDE_TIMING_REC8B = (1 << 2),
1542 IDE_TIMING_CYC8B = (1 << 3),
1543 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1544 IDE_TIMING_CYC8B,
1545 IDE_TIMING_ACTIVE = (1 << 4),
1546 IDE_TIMING_RECOVER = (1 << 5),
1547 IDE_TIMING_CYCLE = (1 << 6),
1548 IDE_TIMING_UDMA = (1 << 7),
1549 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1550 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1551 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1552};
1553
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001554struct ide_timing *ide_timing_find_mode(u8);
Bartlomiej Zolnierkiewiczc9d6c1a2008-07-16 20:33:39 +02001555u16 ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001556void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1557 struct ide_timing *, unsigned int);
1558int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1559
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001560#ifdef CONFIG_IDE_XFER_MODE
Bartlomiej Zolnierkiewicz9ad54092008-07-16 20:33:39 +02001561int ide_scan_pio_blacklist(char *);
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001562const char *ide_xfer_verbose(u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001563u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001564int ide_set_pio_mode(ide_drive_t *, u8);
1565int ide_set_dma_mode(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001566void ide_set_pio(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001567int ide_set_xfer_rate(ide_drive_t *, u8);
1568#else
1569static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1570static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1571#endif
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001572
1573static inline void ide_set_max_pio(ide_drive_t *drive)
1574{
1575 ide_set_pio(drive, 255);
1576}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001578char *ide_media_string(ide_drive_t *);
1579
1580extern struct device_attribute ide_dev_attrs[];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001581extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001582extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001584static inline void ide_dump_identify(u8 *id)
1585{
1586 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1587}
1588
Christoph Lameter86b37862005-08-09 19:59:21 -07001589static inline int hwif_to_node(ide_hwif_t *hwif)
1590{
Bartlomiej Zolnierkiewicz96f80212008-09-02 20:18:47 +02001591 return hwif->dev ? dev_to_node(hwif->dev) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001592}
1593
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +02001594static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001595{
Bartlomiej Zolnierkiewicz5e7f3a42009-01-06 17:20:56 +01001596 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001597
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +02001598 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001599}
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001600
1601#define ide_port_for_each_dev(i, dev, port) \
1602 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1603
Bartlomiej Zolnierkiewicz7ed5b152009-03-24 23:22:41 +01001604#define ide_port_for_each_present_dev(i, dev, port) \
1605 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1606 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1607
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001608#define ide_host_for_each_port(i, port, host) \
1609 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1610
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611#endif /* _IDE_H */