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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
Borislav Petkova1df5162009-04-19 07:00:42 +090029/* for request_sense */
30#include <linux/cdrom.h>
31
Bartlomiej Zolnierkiewiczd45b70a2009-03-24 23:22:54 +010032#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010033# define SUPPORT_VLB_SYNC 0
34#else
35# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#endif
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038/*
39 * Probably not wise to fiddle with these
40 */
Bartlomiej Zolnierkiewiczb40d1b82009-01-06 17:20:51 +010041#define IDE_DEFAULT_MAX_FAILURES 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#define ERROR_MAX 8 /* Max read/write errors per sector */
43#define ERROR_RESET 3 /* Reset controller every 4th retry */
44#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
45
Bartlomiej Zolnierkiewiczc152cc12009-03-27 12:46:34 +010046/* Error codes returned in rq->errors to the higher part of the driver. */
47enum {
48 IDE_DRV_ERROR_GENERAL = 101,
49 IDE_DRV_ERROR_FILEMARK = 102,
50 IDE_DRV_ERROR_EOD = 103,
51};
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053/*
54 * Definitions for accessing IDE controller registers
55 */
56#define IDE_NR_PORTS (10)
57
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020058struct ide_io_ports {
59 unsigned long data_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +020061 union {
62 unsigned long error_addr; /* read: error */
63 unsigned long feature_addr; /* write: feature */
64 };
65
66 unsigned long nsect_addr;
67 unsigned long lbal_addr;
68 unsigned long lbam_addr;
69 unsigned long lbah_addr;
70
71 unsigned long device_addr;
72
73 union {
74 unsigned long status_addr; /*  read: status  */
75 unsigned long command_addr; /* write: command */
76 };
77
78 unsigned long ctl_addr;
79
80 unsigned long irq_addr;
81};
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +020085#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88#define DRIVE_READY (ATA_DRDY | ATA_DSC)
89
90#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92#define SATA_NR_PORTS (3) /* 16 possible ?? */
93
94#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
Linus Torvalds1da177e2005-04-16 15:20:36 -070098/*
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
105 *
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
109 *
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
113 */
114#define PRD_BYTES 8
115#define PRD_ENTRIES 256
116
117/*
118 * Some more useful definitions
119 */
120#define PARTN_BITS 6 /* number of minor dev bits for partitions */
121#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122#define SECTOR_SIZE 512
Bartlomiej Zolnierkiewicz151a6702008-10-10 22:39:28 +0200123
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124/*
125 * Timeouts for various operations:
126 */
Bartlomiej Zolnierkiewiczd6e29552008-10-10 22:39:39 +0200127enum {
128 /* spec allows up to 20ms */
129 WAIT_DRQ = HZ / 10, /* 100ms */
130 /* some laptops are very slow */
131 WAIT_READY = 5 * HZ, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE = 30 * HZ, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD = 10 * HZ, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
140 /*
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
144 */
145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
148};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150/*
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
153 */
154#define REQ_DRIVE_RESET 0x20
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200155#define REQ_DEVSET_EXEC 0x21
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200156#define REQ_PARK_HEADS 0x22
157#define REQ_UNPARK_HEADS 0x23
Elias Oltmanns79e36a92008-07-16 20:33:48 +0200158
159/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 * hwif_chipset_t is used to keep track of the specific hardware
161 * chipset used by each IDE interface, if known.
162 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200163enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 ide_cmd640, ide_dtc2278, ide_ali14xx,
165 ide_qd65xx, ide_umc8672, ide_ht6560b,
Bartlomiej Zolnierkiewiczb7876a62008-12-29 20:27:34 +0100166 ide_4drives, ide_pmac, ide_acorn,
Bartlomiej Zolnierkiewicz9a0e77f2008-04-18 00:46:24 +0200167 ide_au1xxx, ide_palm3710
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200168};
169
170typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172/*
173 * Structure to hold all information about the location of this port
174 */
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200175struct ide_hw {
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200176 union {
177 struct ide_io_ports io_ports;
178 unsigned long io_ports_array[IDE_NR_PORTS];
179 };
180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 int irq; /* our irq number */
Bartlomiej Zolnierkiewiczc56c5642008-07-16 20:33:40 +0200182 struct device *dev, *parent;
Bartlomiej Zolnierkiewiczd6276b52008-07-23 19:55:56 +0200183 unsigned long config;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200184};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200186static inline void ide_std_init_ports(struct ide_hw *hw,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 unsigned long io_addr,
188 unsigned long ctl_addr)
189{
190 unsigned int i;
191
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200192 for (i = 0; i <= 7; i++)
193 hw->io_ports_array[i] = io_addr++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200195 hw->io_ports.ctl_addr = ctl_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196}
197
Adrian Bunkc5bfc372008-08-05 18:17:01 +0200198#define MAX_HWIFS 10
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100199
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200/*
201 * Now for the data we need to maintain per-drive: ide_drive_t
202 */
203
204#define ide_scsi 0x21
205#define ide_disk 0x20
206#define ide_optical 0x7
207#define ide_cdrom 0x5
208#define ide_tape 0x1
209#define ide_floppy 0x0
210
211/*
212 * Special Driver Flags
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 */
Bartlomiej Zolnierkiewiczca1b96e2009-05-17 19:12:21 +0200214enum {
215 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
216 IDE_SFLAG_RECALIBRATE = (1 << 1),
217 IDE_SFLAG_SET_MULTMODE = (1 << 2),
218};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 * Status returned from various ide_ functions
222 */
223typedef enum {
224 ide_stopped, /* no drive operation was started */
225 ide_started, /* a drive operation was started, handler was set */
226} ide_startstop_t;
227
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200228enum {
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200229 IDE_VALID_ERROR = (1 << 1),
230 IDE_VALID_FEATURE = IDE_VALID_ERROR,
231 IDE_VALID_NSECT = (1 << 2),
232 IDE_VALID_LBAL = (1 << 3),
233 IDE_VALID_LBAM = (1 << 4),
234 IDE_VALID_LBAH = (1 << 5),
235 IDE_VALID_DEVICE = (1 << 6),
236 IDE_VALID_LBA = IDE_VALID_LBAL |
237 IDE_VALID_LBAM |
238 IDE_VALID_LBAH,
239 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
240 IDE_VALID_NSECT |
241 IDE_VALID_LBA,
242 IDE_VALID_IN_TF = IDE_VALID_NSECT |
243 IDE_VALID_LBA,
244 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
245 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
246 IDE_VALID_NSECT |
247 IDE_VALID_LBA,
248};
249
250enum {
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200251 IDE_TFLAG_LBA48 = (1 << 0),
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200252 IDE_TFLAG_WRITE = (1 << 1),
253 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
254 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200255 /* force 16-bit I/O operations */
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200256 IDE_TFLAG_IO_16BIT = (1 << 4),
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100257 /* struct ide_cmd was allocated using kmalloc() */
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200258 IDE_TFLAG_DYN = (1 << 5),
259 IDE_TFLAG_FS = (1 << 6),
260 IDE_TFLAG_MULTI_PIO = (1 << 7),
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100261};
262
263enum {
264 IDE_FTFLAG_FLAGGED = (1 << 0),
265 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
266 IDE_FTFLAG_OUT_DATA = (1 << 2),
267 IDE_FTFLAG_IN_DATA = (1 << 3),
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200268};
269
270struct ide_taskfile {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200271 u8 data; /* 0: data byte (for TASKFILE ioctl) */
272 union { /* 1: */
273 u8 error; /* read: error */
274 u8 feature; /* write: feature */
Sergei Shtylyov67625112009-03-31 20:15:30 +0200275 };
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200276 u8 nsect; /* 2: number of sectors */
277 u8 lbal; /* 3: LBA low */
278 u8 lbam; /* 4: LBA mid */
279 u8 lbah; /* 5: LBA high */
280 u8 device; /* 6: device select */
281 union { /* 7: */
282 u8 status; /* read: status */
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200283 u8 command; /* write: command */
284 };
285};
286
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100287struct ide_cmd {
Sergei Shtylyov745483f2009-04-08 14:13:02 +0200288 struct ide_taskfile tf;
289 struct ide_taskfile hob;
Sergei Shtylyov60f85012009-04-08 14:13:01 +0200290 struct {
291 struct {
292 u8 tf;
293 u8 hob;
294 } out, in;
295 } valid;
296
297 u8 tf_flags;
Bartlomiej Zolnierkiewicz19710d22009-03-27 12:46:28 +0100298 u8 ftf_flags; /* for TASKFILE ioctl */
Bartlomiej Zolnierkiewicz0dfb9912009-03-27 12:46:39 +0100299 int protocol;
Bartlomiej Zolnierkiewiczb6308ee2009-03-27 12:46:38 +0100300
301 int sg_nents; /* number of sg entries */
302 int orig_sg_nents;
303 int sg_dma_direction; /* DMA transfer direction */
304
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +0100305 unsigned int nbytes;
Bartlomiej Zolnierkiewiczb6308ee2009-03-27 12:46:38 +0100306 unsigned int nleft;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200307 unsigned int last_xfer_len;
308
Bartlomiej Zolnierkiewiczb6308ee2009-03-27 12:46:38 +0100309 struct scatterlist *cursg;
310 unsigned int cursg_ofs;
311
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200312 struct request *rq; /* copy of request */
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100313};
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200314
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200315/* ATAPI packet command flags */
316enum {
317 /* set when an error is considered normal - no retry (ide-tape) */
318 PC_FLAG_ABORT = (1 << 0),
319 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
320 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
321 PC_FLAG_DMA_OK = (1 << 3),
322 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
323 PC_FLAG_DMA_ERROR = (1 << 5),
324 PC_FLAG_WRITING = (1 << 6),
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200325};
326
Borislav Petkov4cad0852009-01-02 16:12:53 +0100327#define ATAPI_WAIT_PC (60 * HZ)
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200328
329struct ide_atapi_pc {
330 /* actual packet bytes */
331 u8 c[12];
332 /* incremented on each retry */
333 int retries;
334 int error;
335
336 /* bytes to transfer */
337 int req_xfer;
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200338
339 /* the corresponding request */
340 struct request *rq;
341
342 unsigned long flags;
343
344 /*
345 * those are more or less driver-specific and some of them are subject
346 * to change/removal later.
347 */
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200348 unsigned long timeout;
349};
350
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200351struct ide_devset;
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100352struct ide_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100354#ifdef CONFIG_BLK_DEV_IDEACPI
355struct ide_acpi_drive_link;
356struct ide_acpi_hwif_link;
357#endif
358
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200359struct ide_drive_s;
360
361struct ide_disk_ops {
362 int (*check)(struct ide_drive_s *, const char *);
363 int (*get_capacity)(struct ide_drive_s *);
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200364 u64 (*set_capacity)(struct ide_drive_s *, u64);
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200365 void (*setup)(struct ide_drive_s *);
366 void (*flush)(struct ide_drive_s *);
367 int (*init_media)(struct ide_drive_s *, struct gendisk *);
368 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
369 int);
370 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
371 sector_t);
Al Virobadf8082008-10-16 10:23:20 -0400372 int (*ioctl)(struct ide_drive_s *, struct block_device *,
373 fmode_t, unsigned int, unsigned long);
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200374};
375
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200376/* ATAPI device flags */
377enum {
378 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200379
380 /* ide-cd */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200381 /* Drive cannot eject the disc. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100382 IDE_AFLAG_NO_EJECT = (1 << 1),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200383 /* Drive is a pre ATAPI 1.2 drive. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100384 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200385 /* TOC addresses are in BCD. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100386 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200387 /* TOC track numbers are in BCD. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100388 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200389 /* Saved TOC information is current. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100390 IDE_AFLAG_TOC_VALID = (1 << 6),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200391 /* We think that the drive door is locked. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100392 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200393 /* SET_CD_SPEED command is unsupported. */
Borislav Petkovbf647412009-01-02 16:12:50 +0100394 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
395 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
396 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
397 IDE_AFLAG_SANYO_3CD = (1 << 11),
398 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
399 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
400 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200401
402 /* ide-floppy */
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200403 /* Avoid commands not supported in Clik drive */
Borislav Petkovbf647412009-01-02 16:12:50 +0100404 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200405 /* Requires BH algorithm for packets */
Borislav Petkovbf647412009-01-02 16:12:50 +0100406 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200407 /* Supports format progress report */
Borislav Petkovbf647412009-01-02 16:12:50 +0100408 IDE_AFLAG_SRFP = (1 << 17),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200409
410 /* ide-tape */
Borislav Petkovbf647412009-01-02 16:12:50 +0100411 IDE_AFLAG_IGNORE_DSC = (1 << 18),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200412 /* 0 When the tape position is unknown */
Borislav Petkovbf647412009-01-02 16:12:50 +0100413 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200414 /* Device already opened */
Borislav Petkovbf647412009-01-02 16:12:50 +0100415 IDE_AFLAG_BUSY = (1 << 20),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200416 /* Attempt to auto-detect the current user block size */
Borislav Petkovbf647412009-01-02 16:12:50 +0100417 IDE_AFLAG_DETECT_BS = (1 << 21),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200418 /* Currently on a filemark */
Borislav Petkovbf647412009-01-02 16:12:50 +0100419 IDE_AFLAG_FILEMARK = (1 << 22),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200420 /* 0 = no tape is loaded, so we don't rewind after ejecting */
Borislav Petkovbf647412009-01-02 16:12:50 +0100421 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
Borislav Petkovf20f2582008-10-05 18:23:27 +0200422
Borislav Petkovbf647412009-01-02 16:12:50 +0100423 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200424};
425
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200426/* device flags */
427enum {
428 /* restore settings after device reset */
429 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
430 /* device is using DMA for read/write */
431 IDE_DFLAG_USING_DMA = (1 << 1),
432 /* okay to unmask other IRQs */
433 IDE_DFLAG_UNMASK = (1 << 2),
434 /* don't attempt flushes */
435 IDE_DFLAG_NOFLUSH = (1 << 3),
436 /* DSC overlap */
437 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
438 /* give potential excess bandwidth */
439 IDE_DFLAG_NICE1 = (1 << 5),
440 /* device is physically present */
441 IDE_DFLAG_PRESENT = (1 << 6),
Bartlomiej Zolnierkiewicz075affc2009-06-07 13:52:52 +0200442 /* disable Host Protected Area */
443 IDE_DFLAG_NOHPA = (1 << 7),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200444 /* id read from device (synthetic if not set) */
445 IDE_DFLAG_ID_READ = (1 << 8),
446 IDE_DFLAG_NOPROBE = (1 << 9),
447 /* need to do check_media_change() */
448 IDE_DFLAG_REMOVABLE = (1 << 10),
449 /* needed for removable devices */
450 IDE_DFLAG_ATTACH = (1 << 11),
451 IDE_DFLAG_FORCED_GEOM = (1 << 12),
452 /* disallow setting unmask bit */
453 IDE_DFLAG_NO_UNMASK = (1 << 13),
454 /* disallow enabling 32-bit I/O */
455 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
456 /* for removable only: door lock/unlock works */
457 IDE_DFLAG_DOORLOCKING = (1 << 15),
458 /* disallow DMA */
459 IDE_DFLAG_NODMA = (1 << 16),
460 /* powermanagment told us not to do anything, so sleep nicely */
461 IDE_DFLAG_BLOCKED = (1 << 17),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200462 /* sleeping & sleep field valid */
Borislav Petkov53174642009-01-02 16:12:54 +0100463 IDE_DFLAG_SLEEPING = (1 << 18),
464 IDE_DFLAG_POST_RESET = (1 << 19),
465 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
466 IDE_DFLAG_LBA48 = (1 << 21),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200467 /* status of write cache */
Borislav Petkov53174642009-01-02 16:12:54 +0100468 IDE_DFLAG_WCACHE = (1 << 22),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200469 /* used for ignoring ATA_DF */
Borislav Petkov53174642009-01-02 16:12:54 +0100470 IDE_DFLAG_NOWERR = (1 << 23),
Bartlomiej Zolnierkiewiczc3922042008-10-13 21:39:37 +0200471 /* retrying in PIO */
Borislav Petkov53174642009-01-02 16:12:54 +0100472 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
473 IDE_DFLAG_LBA = (1 << 25),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200474 /* don't unload heads */
Borislav Petkov53174642009-01-02 16:12:54 +0100475 IDE_DFLAG_NO_UNLOAD = (1 << 26),
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +0200476 /* heads unloaded, please don't reset port */
Borislav Petkov53174642009-01-02 16:12:54 +0100477 IDE_DFLAG_PARKED = (1 << 27),
478 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200479 /* write protect */
Borislav Petkov53174642009-01-02 16:12:54 +0100480 IDE_DFLAG_WP = (1 << 29),
481 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
Bartlomiej Zolnierkiewicz734affd2009-06-07 15:37:10 +0200482 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200483};
484
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200485struct ide_drive_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 char name[4]; /* drive name, such as "hda" */
487 char driver_req[10]; /* requests specific driver */
488
Jens Axboe165125e2007-07-24 09:28:11 +0200489 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
491 struct request *rq; /* current request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 void *driver_data; /* extra driver data */
Bartlomiej Zolnierkiewicz48fb2682008-10-10 22:39:19 +0200493 u16 *id; /* identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200494#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200496 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200497#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
499
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200500 const struct ide_disk_ops *disk_ops;
501
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200502 unsigned long dev_flags;
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 unsigned long sleep; /* sleep until this time */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 unsigned long timeout; /* max time to wait for irq */
506
Bartlomiej Zolnierkiewiczca1b96e2009-05-17 19:12:21 +0200507 u8 special_flags; /* special action flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508
Bartlomiej Zolnierkiewicz7f612f22008-10-13 21:39:40 +0200509 u8 select; /* basic drive/head select reg value */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 u8 retry_pio; /* retrying dma capable host in pio */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 u8 waiting_for_dma; /* dma currently in progress */
Borislav Petkov0a9b6f82008-10-13 21:39:49 +0200512 u8 dma; /* atapi dma flag */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200516 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 u8 dn; /* now wide spread use */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 u8 acoustic; /* acoustic management */
519 u8 media; /* disk, cdrom, tape, floppy, ... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 u8 ready_stat; /* min status value for drive ready */
521 u8 mult_count; /* current multiple sector setting */
522 u8 mult_req; /* requested multiple sector setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200524 u8 bad_wstat; /* used for ignoring ATA_DF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 u8 head; /* "real" number of heads */
526 u8 sect; /* "real" sectors per track */
527 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
528 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
529
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200530 /* delay this long before sending packet command */
531 u8 pc_delay;
532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
534 unsigned int cyl; /* "real" number of cyls */
Joao Ramos5bfb1512009-06-15 22:13:44 +0200535 void *drive_data; /* used by set_pio_mode/dev_select() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 unsigned int failures; /* current failure count */
537 unsigned int max_failures; /* maximum allowed failure count */
Bartlomiej Zolnierkiewicze957b602009-06-07 13:52:52 +0200538 u64 probed_capacity;/* initial/native media capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 u64 capacity64; /* total number of sectors */
540
541 int lun; /* logical unit */
542 int crc_count; /* crc counter to reduce drive speed */
Borislav Petkovb22b2ca2008-10-13 21:39:34 +0200543
544 unsigned long debug_mask; /* debugging levels switch */
545
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100546#ifdef CONFIG_BLK_DEV_IDEACPI
547 struct ide_acpi_drive_link *acpidata;
548#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 struct list_head list;
550 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800551 struct completion gendev_rel_comp; /* to deal with device release() */
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200552
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200553 /* current packet command */
554 struct ide_atapi_pc *pc;
555
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100556 /* last failed packet command */
557 struct ide_atapi_pc *failed_pc;
558
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200559 /* callback for packet commands */
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +0100560 int (*pc_callback)(struct ide_drive_s *, int);
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200561
Borislav Petkovd6251d42009-01-06 17:20:58 +0100562 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
563
Borislav Petkov3b8ac532008-07-23 19:56:01 +0200564 unsigned long atapi_flags;
Bartlomiej Zolnierkiewicz67c56362008-10-13 21:39:31 +0200565
566 struct ide_atapi_pc request_sense_pc;
Borislav Petkova1df5162009-04-19 07:00:42 +0900567
568 /* current sense rq and buffer */
569 bool sense_rq_armed;
570 struct request sense_rq;
571 struct request_sense sense_data;
Borislav Petkovd7c26eb2008-07-23 19:55:59 +0200572};
573
574typedef struct ide_drive_s ide_drive_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200576#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
577
578#define to_ide_drv(obj, cont_type) \
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +0100579 container_of(obj, struct cont_type, dev)
Borislav Petkov5aeddf92008-10-13 21:39:34 +0200580
581#define ide_drv_g(disk, cont_type) \
582 container_of((disk)->private_data, struct cont_type, driver)
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200583
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200584struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200586struct ide_tp_ops {
587 void (*exec_command)(struct hwif_s *, u8);
588 u8 (*read_status)(struct hwif_s *);
589 u8 (*read_altstatus)(struct hwif_s *);
Sergei Shtylyovecf3a312009-03-31 20:15:30 +0200590 void (*write_devctl)(struct hwif_s *, u8);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200591
Sergei Shtylyovabb596b2009-03-31 20:15:32 +0200592 void (*dev_select)(ide_drive_t *);
Sergei Shtylyovc9ff9e72009-04-08 14:13:03 +0200593 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
Sergei Shtylyov3153c262009-04-08 14:13:03 +0200594 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200595
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100596 void (*input_data)(ide_drive_t *, struct ide_cmd *,
597 void *, unsigned int);
598 void (*output_data)(ide_drive_t *, struct ide_cmd *,
599 void *, unsigned int);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200600};
601
602extern const struct ide_tp_ops default_tp_ops;
603
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200604/**
605 * struct ide_port_ops - IDE port operations
606 *
607 * @init_dev: host specific initialization of a device
608 * @set_pio_mode: routine to program host for PIO mode
609 * @set_dma_mode: routine to program host for DMA mode
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200610 * @reset_poll: chipset polling based on hba specifics
611 * @pre_reset: chipset specific changes to default for device-hba resets
612 * @resetproc: routine to reset controller after a disk reset
613 * @maskproc: special host masking for drive selection
614 * @quirkproc: check host's drive quirk list
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200615 * @clear_irq: clear IRQ
Bartlomiej Zolnierkiewicz39b986a2008-08-05 18:16:57 +0200616 *
617 * @mdma_filter: filter MDMA modes
618 * @udma_filter: filter UDMA modes
619 *
620 * @cable_detect: detect cable type
621 */
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200622struct ide_port_ops {
Bartlomiej Zolnierkiewicze6d95bd2008-07-16 20:33:42 +0200623 void (*init_dev)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200624 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200625 void (*set_dma_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200626 int (*reset_poll)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200627 void (*pre_reset)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200628 void (*resetproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200629 void (*maskproc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200630 void (*quirkproc)(ide_drive_t *);
Bartlomiej Zolnierkiewiczbfa7d8e2008-10-13 21:39:42 +0200631 void (*clear_irq)(ide_drive_t *);
Sergei Shtylyovf4d3ffa2009-06-15 18:52:58 +0200632 int (*test_irq)(struct hwif_s *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200633
634 u8 (*mdma_filter)(ide_drive_t *);
635 u8 (*udma_filter)(ide_drive_t *);
636
637 u8 (*cable_detect)(struct hwif_s *);
638};
639
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200640struct ide_dma_ops {
641 void (*dma_host_set)(struct ide_drive_s *, int);
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100642 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200643 void (*dma_start)(struct ide_drive_s *);
644 int (*dma_end)(struct ide_drive_s *);
645 int (*dma_test_irq)(struct ide_drive_s *);
646 void (*dma_lost_irq)(struct ide_drive_s *);
Bartlomiej Zolnierkiewicz35c9b4d2009-03-31 20:15:19 +0200647 /* below ones are optional */
Bartlomiej Zolnierkiewicz8a4a5732009-03-31 20:15:21 +0200648 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz22117d62009-03-27 12:46:47 +0100649 int (*dma_timer_expiry)(struct ide_drive_s *);
Bartlomiej Zolnierkiewicz35c9b4d2009-03-31 20:15:19 +0200650 void (*dma_clear)(struct ide_drive_s *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +0100651 /*
652 * The following method is optional and only required to be
653 * implemented for the SFF-8038i compatible controllers.
654 */
655 u8 (*dma_sff_read_status)(struct hwif_s *);
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200656};
657
Bartlomiej Zolnierkiewicz5880b5d2009-06-15 18:52:54 +0200658enum {
659 IDE_PFLAG_PROBING = (1 << 0),
660};
661
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200662struct ide_host;
663
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664typedef struct hwif_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 struct hwif_s *mate; /* other hwif from same PCI chip */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
667
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200668 struct ide_host *host;
669
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 char name[6]; /* name of interface, eg. "ide0" */
671
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200672 struct ide_io_ports io_ports;
673
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100676 ide_drive_t *devices[MAX_DRIVES + 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677
Bartlomiej Zolnierkiewicz5880b5d2009-06-15 18:52:54 +0200678 unsigned long port_flags;
679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 u8 major; /* our major number */
681 u8 index; /* 0 for ide0; 1 for ide1; ... */
682 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
David Millere95d9c62007-10-22 02:09:00 -0700684 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200685
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200686 u8 pio_mask;
687
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 u8 ultra_mask;
689 u8 mwdma_mask;
690 u8 swdma_mask;
691
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200692 u8 cbl; /* cable type */
693
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 hwif_chipset_t chipset; /* sub-module for tuning.. */
695
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100696 struct device *dev;
697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 void (*rw_disk)(ide_drive_t *, struct request *);
699
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200700 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200701 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200702 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100703
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 /* dma physical region descriptor table (cpu view) */
705 unsigned int *dmatable_cpu;
706 /* dma physical region descriptor table (dma view) */
707 dma_addr_t dmatable_dma;
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200708
709 /* maximum number of PRD table entries */
710 int prd_max_nents;
711 /* PRD entry size in bytes */
712 int prd_ent_size;
713
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 /* Scatter-gather list used to build the above */
715 struct scatterlist *sg_table;
716 int sg_max_nents; /* Maximum number of entries in it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +0100718 struct ide_cmd cmd; /* current command */
Bartlomiej Zolnierkiewiczd6ff9f62008-10-13 21:39:41 +0200719
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 int rqsize; /* max sectors per request */
721 int irq; /* our irq number */
722
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 unsigned long dma_base; /* base addr for dma ports */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 unsigned long config_data; /* for use by chipset-specific code */
726 unsigned long select_data; /* for use by chipset-specific code */
727
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700728 unsigned long extra_base; /* extra addr for dma ports */
729 unsigned extra_ports; /* number of extra dma ports */
730
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 unsigned present : 1; /* this interface exists */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100732 unsigned busy : 1; /* serializes devices on a port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200734 struct device gendev;
735 struct device *portdev;
736
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800737 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738
739 void *hwif_data; /* extra hwif data */
740
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100741#ifdef CONFIG_BLK_DEV_IDEACPI
742 struct ide_acpi_hwif_link *acpidata;
743#endif
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100744
745 /* IRQ handler, if active */
746 ide_startstop_t (*handler)(ide_drive_t *);
747
748 /* BOOL: polling active & poll_timeout field valid */
749 unsigned int polling : 1;
750
751 /* current drive */
752 ide_drive_t *cur_dev;
753
754 /* current request */
755 struct request *rq;
756
757 /* failsafe timer */
758 struct timer_list timer;
759 /* timeout value during long polls */
760 unsigned long poll_timeout;
761 /* queried upon timeouts */
762 int (*expiry)(ide_drive_t *);
763
764 int req_gen;
765 int req_gen_timer;
766
767 spinlock_t lock;
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800768} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769
Bartlomiej Zolnierkiewicza36223b2008-10-13 21:39:43 +0200770#define MAX_HOST_PORTS 4
771
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200772struct ide_host {
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +0100773 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200774 unsigned int n_ports;
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200775 struct device *dev[2];
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100776
Bartlomiej Zolnierkiewicz2ed0ef52009-03-24 23:22:53 +0100777 int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100778
779 void (*get_lock)(irq_handler_t, void *);
780 void (*release_lock)(void);
781
Stanislaw Gruszka849d7132009-03-05 16:10:57 +0100782 irq_handler_t irq_handler;
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +0100783
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +0200784 unsigned long host_flags;
Bartlomiej Zolnierkiewicz255115fb2009-03-27 12:46:27 +0100785
786 int irq_flags;
787
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200788 void *host_priv;
Bartlomiej Zolnierkiewiczbd53cbc2009-01-06 17:20:48 +0100789 ide_hwif_t *cur_port; /* for hosts requiring serialization */
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100790
791 /* used for hosts requiring serialization */
Ben Dookse720b9e2009-01-14 19:19:04 +0100792 volatile unsigned long host_busy;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200793};
794
Bartlomiej Zolnierkiewicz5b31f852009-01-06 17:20:49 +0100795#define IDE_HOST_BUSY 0
796
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797/*
798 * internal ide interrupt handler type
799 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
801typedef int (ide_expiry_t)(ide_drive_t *);
802
Borislav Petkov0eea6452008-02-02 19:56:36 +0100803/* used by ide-cd, ide-floppy, etc. */
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +0100804typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
Borislav Petkov0eea6452008-02-02 19:56:36 +0100805
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200806extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200807
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200808/*
809 * configurable drive settings
810 */
811
812#define DS_SYNC (1 << 0)
813
814struct ide_devset {
815 int (*get)(ide_drive_t *);
816 int (*set)(ide_drive_t *, int);
817 unsigned int flags;
818};
819
820#define __DEVSET(_flags, _get, _set) { \
821 .flags = _flags, \
822 .get = _get, \
823 .set = _set, \
824}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200825
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200826#define ide_devset_get(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200827static int get_##name(ide_drive_t *drive) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200828{ \
829 return drive->field; \
830}
831
832#define ide_devset_set(name, field) \
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200833static int set_##name(ide_drive_t *drive, int arg) \
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200834{ \
835 drive->field = arg; \
836 return 0; \
837}
838
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200839#define ide_devset_get_flag(name, flag) \
840static int get_##name(ide_drive_t *drive) \
841{ \
842 return !!(drive->dev_flags & flag); \
843}
844
845#define ide_devset_set_flag(name, flag) \
846static int set_##name(ide_drive_t *drive, int arg) \
847{ \
848 if (arg) \
849 drive->dev_flags |= flag; \
850 else \
851 drive->dev_flags &= ~flag; \
852 return 0; \
853}
854
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200855#define __IDE_DEVSET(_name, _flags, _get, _set) \
856const struct ide_devset ide_devset_##_name = \
857 __DEVSET(_flags, _get, _set)
858
859#define IDE_DEVSET(_name, _flags, _get, _set) \
860static __IDE_DEVSET(_name, _flags, _get, _set)
861
862#define ide_devset_rw(_name, _func) \
863IDE_DEVSET(_name, 0, get_##_func, set_##_func)
864
865#define ide_devset_w(_name, _func) \
866IDE_DEVSET(_name, 0, NULL, set_##_func)
867
Bartlomiej Zolnierkiewiczf8790482008-10-13 21:39:45 +0200868#define ide_ext_devset_rw(_name, _func) \
869__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
870
871#define ide_ext_devset_rw_sync(_name, _func) \
872__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200873
874#define ide_decl_devset(_name) \
875extern const struct ide_devset ide_devset_##_name
876
877ide_decl_devset(io_32bit);
878ide_decl_devset(keepsettings);
879ide_decl_devset(pio_mode);
880ide_decl_devset(unmaskirq);
881ide_decl_devset(using_dma);
882
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200883#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885 * /proc/ide interface
886 */
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200887
888#define ide_devset_rw_field(_name, _field) \
889ide_devset_get(_name, _field); \
890ide_devset_set(_name, _field); \
891IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
892
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +0200893#define ide_devset_rw_flag(_name, _field) \
894ide_devset_get_flag(_name, _field); \
895ide_devset_set_flag(_name, _field); \
896IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
897
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +0200898struct ide_proc_devset {
899 const char *name;
900 const struct ide_devset *setting;
901 int min, max;
902 int (*mulf)(ide_drive_t *);
903 int (*divf)(ide_drive_t *);
904};
905
906#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
907 .name = __stringify(_name), \
908 .setting = &ide_devset_##_name, \
909 .min = _min, \
910 .max = _max, \
911 .mulf = _mulf, \
912 .divf = _divf, \
913}
914
915#define IDE_PROC_DEVSET(_name, _min, _max) \
916__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
917
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918typedef struct {
919 const char *name;
920 mode_t mode;
921 read_proc_t *read_proc;
922 write_proc_t *write_proc;
923} ide_proc_entry_t;
924
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200925void proc_ide_create(void);
926void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200927void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100928void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200929void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200930void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100931void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
932void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200933
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934read_proc_t proc_ide_read_capacity;
935read_proc_t proc_ide_read_geometry;
936
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937/*
938 * Standard exit stuff:
939 */
940#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
941{ \
942 len -= off; \
943 if (len < count) { \
944 *eof = 1; \
945 if (len <= 0) \
946 return 0; \
947 } else \
948 len = count; \
949 *start = page + off; \
950 return len; \
951}
952#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200953static inline void proc_ide_create(void) { ; }
954static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200955static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100956static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200957static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200958static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +0100959static inline void ide_proc_register_driver(ide_drive_t *drive,
960 struct ide_driver *driver) { ; }
961static inline void ide_proc_unregister_driver(ide_drive_t *drive,
962 struct ide_driver *driver) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
964#endif
965
Borislav Petkove1c7c462008-10-13 21:39:35 +0200966enum {
967 /* enter/exit functions */
968 IDE_DBG_FUNC = (1 << 0),
969 /* sense key/asc handling */
970 IDE_DBG_SENSE = (1 << 1),
971 /* packet commands handling */
972 IDE_DBG_PC = (1 << 2),
973 /* request handling */
974 IDE_DBG_RQ = (1 << 3),
975 /* driver probing/setup */
976 IDE_DBG_PROBE = (1 << 4),
977};
978
979/* DRV_NAME has to be defined in the driver before using the macro below */
Borislav Petkov088b1b82009-01-02 13:34:47 +0100980#define __ide_debug_log(lvl, fmt, args...) \
981{ \
982 if (unlikely(drive->debug_mask & lvl)) \
983 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
984 __func__, ## args); \
Borislav Petkove1c7c462008-10-13 21:39:35 +0200985}
986
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987/*
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +0200988 * Power Management state machine (rq->pm->pm_step).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +0200990 * For each step, the core calls ide_start_power_step() first.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 * This can return:
992 * - ide_stopped : In this case, the core calls us back again unless
993 * step have been set to ide_power_state_completed.
994 * - ide_started : In this case, the channel is left busy until an
995 * async event (interrupt) occurs.
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +0200996 * Typically, ide_start_power_step() will issue a taskfile request with
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 * do_rw_taskfile().
998 *
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +0200999 * Upon reception of the interrupt, the core will call ide_complete_power_step()
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000 * with the error code if any. This routine should update the step value
1001 * and return. It should not start a new request. The core will call
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001002 * ide_start_power_step() for the new step value, unless step have been
1003 * set to IDE_PM_COMPLETED.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005enum {
Bartlomiej Zolnierkiewicz0d346ba2008-10-13 21:39:38 +02001006 IDE_PM_START_SUSPEND,
1007 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1008 IDE_PM_STANDBY,
1009
1010 IDE_PM_START_RESUME,
1011 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1012 IDE_PM_IDLE,
1013 IDE_PM_RESTORE_DMA,
1014
1015 IDE_PM_COMPLETED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016};
1017
Bartlomiej Zolnierkiewicze2984c62008-12-29 20:27:37 +01001018int generic_ide_suspend(struct device *, pm_message_t);
1019int generic_ide_resume(struct device *);
1020
1021void ide_complete_power_step(ide_drive_t *, struct request *);
1022ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz3616b652009-03-27 12:46:29 +01001023void ide_complete_pm_rq(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicze2984c62008-12-29 20:27:37 +01001024void ide_check_pm_state(ide_drive_t *, struct request *);
1025
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026/*
1027 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001028 *
1029 * The gendriver.owner field should be set to the module owner of this driver.
1030 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 */
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001032struct ide_driver {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 const char *version;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +00001036 int (*probe)(ide_drive_t *);
1037 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +02001038 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +00001039 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001040#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001041 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1042 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001043#endif
1044};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001046#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
Russell King4031bbe2006-01-06 11:41:00 +00001047
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +02001048int ide_device_get(ide_drive_t *);
1049void ide_device_put(ide_drive_t *);
1050
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001051struct ide_ioctl_devset {
1052 unsigned int get_ioctl;
1053 unsigned int set_ioctl;
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001054 const struct ide_devset *setting;
Bartlomiej Zolnierkiewiczaa7687732008-10-10 22:39:33 +02001055};
1056
1057int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1058 unsigned long, const struct ide_ioctl_devset *);
1059
Al Viro1bddd9e2008-09-02 17:19:43 -04001060int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061
Bartlomiej Zolnierkiewiczebae41a2008-04-27 15:38:29 +02001062extern int ide_vlb_clk;
1063extern int ide_pci_clk;
1064
Bartlomiej Zolnierkiewicz1caf2362009-03-27 12:46:42 +01001065int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
Bartlomiej Zolnierkiewicz327fa1c2009-03-24 23:22:47 +01001066void ide_kill_rq(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +01001068void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1069void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070
Bartlomiej Zolnierkiewicz35b5d0b2009-03-27 12:46:47 +01001071void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1072 unsigned int);
Bartlomiej Zolnierkiewicz1fc14252008-04-28 23:44:39 +02001073
Bartlomiej Zolnierkiewicz9f87abe2008-04-28 23:44:41 +02001074void ide_pad_transfer(ide_drive_t *, int, int);
1075
Bartlomiej Zolnierkiewicz9892ec52009-01-06 17:20:53 +01001076ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001078void ide_fix_driveid(u16 *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +01001079
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080extern void ide_fixstring(u8 *, const int, const int);
1081
Bartlomiej Zolnierkiewicz28ee9bc2009-05-22 16:23:38 +02001082int ide_busy_sleep(ide_drive_t *, unsigned long, int);
Bartlomiej Zolnierkiewiczb163f462008-10-10 22:39:23 +02001083
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +02001084int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085
Bartlomiej Zolnierkiewiczc4e66c32009-03-24 23:22:44 +01001086ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewicz11938c92009-03-24 23:22:44 +01001087ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
Bartlomiej Zolnierkiewiczc4e66c32009-03-24 23:22:44 +01001088
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089extern ide_startstop_t ide_do_reset (ide_drive_t *);
1090
Elias Oltmanns92f1f8f2008-10-10 22:39:40 +02001091extern int ide_devset_execute(ide_drive_t *drive,
1092 const struct ide_devset *setting, int arg);
1093
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +01001094void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
Bartlomiej Zolnierkiewiczf974b192009-03-27 12:46:44 +01001095int ide_complete_rq(ide_drive_t *, int, unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096
Sergei Shtylyov3153c262009-04-08 14:13:03 +02001097void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
Sergei Shtylyov745483f2009-04-08 14:13:02 +02001098void ide_tf_dump(const char *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz089c5c72008-04-28 23:44:39 +02001099
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001100void ide_exec_command(ide_hwif_t *, u8);
1101u8 ide_read_status(ide_hwif_t *);
1102u8 ide_read_altstatus(ide_hwif_t *);
Sergei Shtylyovecf3a312009-03-31 20:15:30 +02001103void ide_write_devctl(ide_hwif_t *, u8);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001104
Sergei Shtylyovabb596b2009-03-31 20:15:32 +02001105void ide_dev_select(ide_drive_t *);
Sergei Shtylyovc9ff9e72009-04-08 14:13:03 +02001106void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
Sergei Shtylyov3153c262009-04-08 14:13:03 +02001107void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001108
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +01001109void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1110void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001111
Bartlomiej Zolnierkiewiczed4af482008-07-15 21:21:48 +02001112void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001114u8 ide_read_error(ide_drive_t *);
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +02001115void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
Bartlomiej Zolnierkiewicz92eb4382008-07-23 19:55:53 +02001116
Borislav Petkov103f7032009-04-26 10:39:07 +02001117int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1118
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +02001119int ide_check_atapi_device(ide_drive_t *, const char *);
1120
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +02001121void ide_init_pc(struct ide_atapi_pc *);
1122
Elias Oltmanns4abdc6e2008-10-13 21:39:50 +02001123/* Disk head parking */
1124extern wait_queue_head_t ide_park_wq;
1125ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1126 char *buf);
1127ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1128 const char *buf, size_t len);
1129
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001130/*
1131 * Special requests for ide-tape block device strategy routine.
1132 *
1133 * In order to service a character device command, we add special requests to
1134 * the tail of our block device request queue and wait for their completion.
1135 */
1136enum {
1137 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1138 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1139 REQ_IDETAPE_READ = (1 << 2),
1140 REQ_IDETAPE_WRITE = (1 << 3),
1141};
1142
Borislav Petkov5a0e43b2009-05-01 23:27:11 +02001143int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
Borislav Petkovb13345f2009-05-02 10:26:12 +02001144 void *, unsigned int);
Bartlomiej Zolnierkiewicz7645c152008-10-10 22:39:37 +02001145
Bartlomiej Zolnierkiewiczde699ad2008-10-10 22:39:39 +02001146int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
Bartlomiej Zolnierkiewicz0c8a6c72008-10-10 22:39:39 +02001147int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001148int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
Bartlomiej Zolnierkiewicz6b0da282008-10-13 21:39:32 +02001149void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
Borislav Petkov6b544fc2009-04-19 07:00:42 +09001150void ide_retry_pc(ide_drive_t *drive);
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +02001151
Borislav Petkova1df5162009-04-19 07:00:42 +09001152void ide_prep_sense(ide_drive_t *drive, struct request *rq);
Tejun Heo5c4be572009-04-19 07:00:42 +09001153int ide_queue_sense_rq(ide_drive_t *drive, void *special);
Borislav Petkova1df5162009-04-19 07:00:42 +09001154
Borislav Petkov4cad0852009-01-02 16:12:53 +01001155int ide_cd_expiry(ide_drive_t *);
Bartlomiej Zolnierkiewicz844b9462008-10-13 21:39:31 +02001156
Borislav Petkov392de1d2009-01-02 16:12:52 +01001157int ide_cd_get_xferlen(struct request *);
1158
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +01001159ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz594c16d2008-07-15 21:21:58 +02001160
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +01001161ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +02001163void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1164
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +01001165void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
Tejun Heo4d7a9842008-01-26 20:13:11 +01001166
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +01001167int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1168int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +01001169
Bartlomiej Zolnierkiewicz22aa4b32009-03-27 12:46:37 +01001170int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171
Bartlomiej Zolnierkiewicz2ebe1d92009-03-24 23:22:59 +01001172int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1173
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175extern int ide_config_drive_speed(ide_drive_t *, u8);
1176extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1178
1179extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1180
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1182
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +01001184extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001185extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001186
1187void ide_init_disk(struct gendisk *, ide_drive_t *);
1188
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001189#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001190extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1191#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001192#else
1193#define ide_pci_register_driver(d) pci_register_driver(d)
1194#endif
1195
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001196static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1197{
1198 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1199 return 1;
1200 return 0;
1201}
1202
Bartlomiej Zolnierkiewicz86ccf372009-03-24 23:22:53 +01001203void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +02001204 struct ide_hw *, struct ide_hw **);
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001205void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001207#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001208int ide_pci_set_master(struct pci_dev *, const char *);
1209unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczebb00fb2008-07-23 19:55:51 +02001210int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001211int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001212#else
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001213static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1214 const struct ide_port_info *d)
1215{
1216 return -EINVAL;
1217}
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001218#endif
1219
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001220struct ide_pci_enablebit {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221 u8 reg; /* byte pci reg holding the enable-bit */
1222 u8 mask; /* mask to isolate the enable-bit */
1223 u8 val; /* value of masked reg when "enabled" */
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001224};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001225
1226enum {
1227 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001228 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001229 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001230 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001231 /* don't use legacy PIO blacklist */
1232 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
Bartlomiej Zolnierkiewicze277f912008-04-26 17:36:36 +02001233 /* set for the second port of QD65xx */
1234 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001235 /* use PIO8/9 for prefetch off/on */
1236 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1237 /* use PIO6/7 for fast-devsel off/on */
1238 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1239 /* use 100-102 and 200-202 PIO values to set DMA modes */
1240 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001241 /*
1242 * keep DMA setting when programming PIO mode, may be used only
1243 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1244 */
1245 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001246 /* program host for the transfer mode after programming device */
1247 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1248 /* don't program host/device for the transfer mode ("smart" hosts) */
1249 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001250 /* trust BIOS for programming chipset/device for DMA */
1251 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewiczcafa0272008-05-14 23:06:16 +02001252 /* host is CS5510/CS5520 */
1253 IDE_HFLAG_CS5520 = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001254 /* ATAPI DMA is unsupported */
1255 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001256 /* set if host is a "non-bootable" controller */
1257 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001258 /* host doesn't support DMA */
1259 IDE_HFLAG_NO_DMA = (1 << 14),
1260 /* check if host is PCI IDE device before allowing DMA */
1261 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +02001262 /* host uses MMIO */
1263 IDE_HFLAG_MMIO = (1 << 16),
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001264 /* no LBA48 */
1265 IDE_HFLAG_NO_LBA48 = (1 << 17),
1266 /* no LBA48 DMA */
1267 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001268 /* data FIFO is cleared by an error */
1269 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001270 /* serialize ports */
1271 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz2787cb82009-03-27 12:46:28 +01001272 /* host is DTC2278 */
1273 IDE_HFLAG_DTC2278 = (1 << 21),
Bartlomiej Zolnierkiewiczc094ea02009-03-27 12:46:28 +01001274 /* 4 devices on a single set of I/O ports */
1275 IDE_HFLAG_4DRIVES = (1 << 22),
Bartlomiej Zolnierkiewicz1f660192008-12-29 20:27:34 +01001276 /* host is TRM290 */
1277 IDE_HFLAG_TRM290 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001278 /* use 32-bit I/O ops */
1279 IDE_HFLAG_IO_32BIT = (1 << 24),
1280 /* unmask IRQs */
1281 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz66364872008-12-02 20:40:03 +01001282 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
Bartlomiej Zolnierkiewicz1fd18902008-04-26 22:25:24 +02001283 /* serialize ports if DMA is possible (for sl82c105) */
1284 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b422008-02-01 23:09:30 +01001285 /* force host out of "simplex" mode */
1286 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001287 /* DSC overlap is unsupported */
1288 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001289 /* never use 32-bit I/O ops */
1290 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1291 /* never unmask IRQs */
1292 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293};
1294
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001295#ifdef CONFIG_BLK_DEV_OFFBOARD
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001296# define IDE_HFLAG_OFF_BOARD 0
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001297#else
1298# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001299#endif
1300
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001301struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302 char *name;
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +01001303
Bartlomiej Zolnierkiewicz2ed0ef52009-03-24 23:22:53 +01001304 int (*init_chipset)(struct pci_dev *);
Bartlomiej Zolnierkiewicze354c1d2009-03-27 12:46:22 +01001305
1306 void (*get_lock)(irq_handler_t, void *);
1307 void (*release_lock)(void);
1308
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309 void (*init_iops)(ide_hwif_t *);
1310 void (*init_hwif)(ide_hwif_t *);
Bartlomiej Zolnierkiewiczb123f562008-04-26 22:25:22 +02001311 int (*init_dma)(ide_hwif_t *,
1312 const struct ide_port_info *);
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001313
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001314 const struct ide_tp_ops *tp_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001315 const struct ide_port_ops *port_ops;
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001316 const struct ide_dma_ops *dma_ops;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +02001317
Bartlomiej Zolnierkiewiczc0ae5022009-01-06 17:20:52 +01001318 struct ide_pci_enablebit enablebits[2];
1319
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001320 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz6b492492008-12-29 20:27:34 +01001321
1322 u16 max_sectors; /* if < than the default one */
1323
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001324 u32 host_flags;
Bartlomiej Zolnierkiewicz255115fb2009-03-27 12:46:27 +01001325
1326 int irq_flags;
1327
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001328 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001329 u8 swdma_mask;
1330 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001331 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001332};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +02001334int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1335int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1336 const struct ide_port_info *, void *);
Bartlomiej Zolnierkiewiczef0b0422008-07-24 22:53:19 +02001337void ide_pci_remove(struct pci_dev *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +02001339#ifdef CONFIG_PM
1340int ide_pci_suspend(struct pci_dev *, pm_message_t);
1341int ide_pci_resume(struct pci_dev *);
1342#else
1343#define ide_pci_suspend NULL
1344#define ide_pci_resume NULL
1345#endif
1346
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +01001347void ide_map_sg(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewiczbf717c02009-03-27 12:46:47 +01001348void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
1350#define BAD_DMA_DRIVE 0
1351#define GOOD_DMA_DRIVE 1
1352
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001353struct drive_list_entry {
1354 const char *id_model;
1355 const char *id_firmware;
1356};
1357
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001358int ide_in_drive_list(u16 *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001359
1360#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001361int ide_dma_good_drive(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001363
1364u8 ide_find_dma_mode(ide_drive_t *, u8);
1365
1366static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1367{
1368 return ide_find_dma_mode(drive, XFER_UDMA_6);
1369}
1370
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001371void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001372void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001373void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001374int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001375void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376ide_startstop_t ide_dma_intr(ide_drive_t *);
1377
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001378int ide_allocate_dma_engine(ide_hwif_t *);
1379void ide_release_dma_engine(ide_hwif_t *);
1380
Bartlomiej Zolnierkiewicz5ae54122009-03-31 20:15:20 +02001381int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewiczf094d4d2009-03-31 20:15:24 +02001382void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001383
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001384#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001385int config_drive_for_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +01001386int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001387void ide_dma_host_set(ide_drive_t *, int);
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +01001388int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389extern void ide_dma_start(ide_drive_t *);
Bartlomiej Zolnierkiewicz653bcf52008-10-13 21:39:46 +02001390int ide_dma_end(ide_drive_t *);
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +02001391int ide_dma_test_irq(ide_drive_t *);
Bartlomiej Zolnierkiewicz22117d62009-03-27 12:46:47 +01001392int ide_dma_sff_timer_expiry(ide_drive_t *);
Sergei Shtylyov592b5312009-01-06 17:21:02 +01001393u8 ide_dma_sff_read_status(ide_hwif_t *);
Kevin Hilman71fc9fc2008-09-02 20:18:46 +02001394extern const struct ide_dma_ops sff_dma_ops;
Bartlomiej Zolnierkiewicz2dbe7e92008-10-13 21:39:47 +02001395#else
1396static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001397#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001399void ide_dma_lost_irq(ide_drive_t *);
Bartlomiej Zolnierkiewicz65ca5372009-03-24 23:22:43 +01001400ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +02001401
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402#else
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001403static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001404static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001405static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001406static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001407static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001409static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001410static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz22117d62009-03-27 12:46:47 +01001411static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
Bartlomiej Zolnierkiewicz65ca5372009-03-24 23:22:43 +01001412static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
Bartlomiej Zolnierkiewicz0d1bad22008-04-26 22:25:19 +02001413static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5ae54122009-03-31 20:15:20 +02001414static inline int ide_dma_prepare(ide_drive_t *drive,
1415 struct ide_cmd *cmd) { return 1; }
Bartlomiej Zolnierkiewiczf094d4d2009-03-31 20:15:24 +02001416static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1417 struct ide_cmd *cmd) { ; }
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +02001418#endif /* CONFIG_BLK_DEV_IDEDMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001420#ifdef CONFIG_BLK_DEV_IDEACPI
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001421int ide_acpi_init(void);
Bartlomiej Zolnierkiewicz2bf427b2009-06-29 19:20:42 -07001422bool ide_port_acpi(ide_hwif_t *hwif);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001423extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1424extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1425extern void ide_acpi_push_timing(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001426void ide_acpi_init_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001427void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001428extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001429#else
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001430static inline int ide_acpi_init(void) { return 0; }
Bartlomiej Zolnierkiewicz2bf427b2009-06-29 19:20:42 -07001431static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001432static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1433static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1434static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz8b803bd2009-03-24 23:22:41 +01001435static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001436static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001437static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001438#endif
1439
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440void ide_register_region(struct gendisk *);
1441void ide_unregister_region(struct gendisk *);
1442
Bartlomiej Zolnierkiewicz8bc1e5a2009-06-07 15:37:09 +02001443void ide_check_nien_quirk_list(ide_drive_t *);
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001444void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001446void ide_port_apply_params(ide_hwif_t *);
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001447int ide_sysfs_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001448
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +02001449struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +02001450 unsigned int);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +02001451void ide_host_free(struct ide_host *);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001452int ide_host_register(struct ide_host *, const struct ide_port_info *,
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +02001453 struct ide_hw **);
1454int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +02001455 struct ide_host **);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +02001456void ide_host_remove(struct ide_host *);
Bartlomiej Zolnierkiewicz0bfeee72008-04-26 22:25:16 +02001457int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001458void ide_port_unregister_devices(ide_hwif_t *);
1459void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460
1461static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1462{
1463 return hwif->hwif_data;
1464}
1465
1466static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1467{
1468 hwif->hwif_data = data;
1469}
1470
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471extern void ide_toggle_bounce(ide_drive_t *drive, int on);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472
Sergei Shtylyov745483f2009-04-08 14:13:02 +02001473u64 ide_get_lba_addr(struct ide_cmd *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474u8 ide_dump_status(ide_drive_t *, const char *, u8);
1475
Bartlomiej Zolnierkiewicz3be53f32008-07-16 20:33:36 +02001476struct ide_timing {
1477 u8 mode;
1478 u8 setup; /* t1 */
1479 u16 act8b; /* t2 for 8-bit io */
1480 u16 rec8b; /* t2i for 8-bit io */
1481 u16 cyc8b; /* t0 for 8-bit io */
1482 u16 active; /* t2 or tD */
1483 u16 recover; /* t2i or tK */
1484 u16 cycle; /* t0 */
1485 u16 udma; /* t2CYCTYP/2 */
1486};
1487
1488enum {
1489 IDE_TIMING_SETUP = (1 << 0),
1490 IDE_TIMING_ACT8B = (1 << 1),
1491 IDE_TIMING_REC8B = (1 << 2),
1492 IDE_TIMING_CYC8B = (1 << 3),
1493 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1494 IDE_TIMING_CYC8B,
1495 IDE_TIMING_ACTIVE = (1 << 4),
1496 IDE_TIMING_RECOVER = (1 << 5),
1497 IDE_TIMING_CYCLE = (1 << 6),
1498 IDE_TIMING_UDMA = (1 << 7),
1499 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1500 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1501 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1502};
1503
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001504struct ide_timing *ide_timing_find_mode(u8);
Bartlomiej Zolnierkiewiczc9d6c1a2008-07-16 20:33:39 +02001505u16 ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewiczf06ab342008-07-16 20:33:37 +02001506void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1507 struct ide_timing *, unsigned int);
1508int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1509
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001510#ifdef CONFIG_IDE_XFER_MODE
Bartlomiej Zolnierkiewicz9ad54092008-07-16 20:33:39 +02001511int ide_scan_pio_blacklist(char *);
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001512const char *ide_xfer_verbose(u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001513u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Bartlomiej Zolnierkiewiczc9ef59f2009-06-15 18:52:53 +02001514int ide_pio_need_iordy(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001515int ide_set_pio_mode(ide_drive_t *, u8);
1516int ide_set_dma_mode(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001517void ide_set_pio(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz7eeaaaa2009-03-24 23:22:46 +01001518int ide_set_xfer_rate(ide_drive_t *, u8);
1519#else
1520static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1521static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1522#endif
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001523
1524static inline void ide_set_max_pio(ide_drive_t *drive)
1525{
1526 ide_set_pio(drive, 255);
1527}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528
Bartlomiej Zolnierkiewiczebdab072009-01-02 16:12:48 +01001529char *ide_media_string(ide_drive_t *);
1530
1531extern struct device_attribute ide_dev_attrs[];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001533extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001535static inline void ide_dump_identify(u8 *id)
1536{
1537 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1538}
1539
Christoph Lameter86b37862005-08-09 19:59:21 -07001540static inline int hwif_to_node(ide_hwif_t *hwif)
1541{
Bartlomiej Zolnierkiewicz96f80212008-09-02 20:18:47 +02001542 return hwif->dev ? dev_to_node(hwif->dev) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001543}
1544
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +02001545static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001546{
Bartlomiej Zolnierkiewicz5e7f3a42009-01-06 17:20:56 +01001547 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001548
Bartlomiej Zolnierkiewicz97100fc2008-10-13 21:39:36 +02001549 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001550}
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001551
Joao Ramos5bfb1512009-06-15 22:13:44 +02001552static inline void *ide_get_drivedata(ide_drive_t *drive)
1553{
1554 return drive->drive_data;
1555}
1556
1557static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1558{
1559 drive->drive_data = data;
1560}
1561
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001562#define ide_port_for_each_dev(i, dev, port) \
1563 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1564
Bartlomiej Zolnierkiewicz7ed5b152009-03-24 23:22:41 +01001565#define ide_port_for_each_present_dev(i, dev, port) \
1566 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1567 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1568
Bartlomiej Zolnierkiewicz2bd24a12009-01-06 17:20:56 +01001569#define ide_host_for_each_port(i, port, host) \
1570 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
1571
Linus Torvalds1da177e2005-04-16 15:20:36 -07001572#endif /* _IDE_H */