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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>
11#include <linux/hdreg.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>
Hannes Reineckee3a59b42007-02-07 18:19:37 +010020#ifdef CONFIG_BLK_DEV_IDEACPI
21#include <acpi/acpi.h>
22#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <asm/byteorder.h>
24#include <asm/system.h>
25#include <asm/io.h>
Matthias Kaehlckef9383c42007-07-09 23:17:56 +020026#include <asm/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Bartlomiej Zolnierkiewicz729d4de2008-03-29 19:55:17 +010028#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010029# define SUPPORT_VLB_SYNC 0
30#else
31# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#endif
33
34/*
35 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
36 * number.
37 */
38
39#define IDE_NO_IRQ (-1)
40
Linus Torvalds1da177e2005-04-16 15:20:36 -070041typedef unsigned char byte; /* used everywhere */
42
43/*
44 * Probably not wise to fiddle with these
45 */
46#define ERROR_MAX 8 /* Max read/write errors per sector */
47#define ERROR_RESET 3 /* Reset controller every 4th retry */
48#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
49
50/*
51 * Tune flags
52 */
53#define IDE_TUNE_NOAUTO 2
54#define IDE_TUNE_AUTO 1
55#define IDE_TUNE_DEFAULT 0
56
57/*
58 * state flags
59 */
60
61#define DMA_PIO_RETRY 1 /* retrying in PIO */
62
63#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
64#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
65
66/*
67 * Definitions for accessing IDE controller registers
68 */
69#define IDE_NR_PORTS (10)
70
71#define IDE_DATA_OFFSET (0)
72#define IDE_ERROR_OFFSET (1)
73#define IDE_NSECTOR_OFFSET (2)
74#define IDE_SECTOR_OFFSET (3)
75#define IDE_LCYL_OFFSET (4)
76#define IDE_HCYL_OFFSET (5)
77#define IDE_SELECT_OFFSET (6)
78#define IDE_STATUS_OFFSET (7)
79#define IDE_CONTROL_OFFSET (8)
80#define IDE_IRQ_OFFSET (9)
81
82#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
83#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +020084#define IDE_ALTSTATUS_OFFSET IDE_CONTROL_OFFSET
85#define IDE_IREASON_OFFSET IDE_NSECTOR_OFFSET
86#define IDE_BCOUNTL_OFFSET IDE_LCYL_OFFSET
87#define IDE_BCOUNTH_OFFSET IDE_HCYL_OFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
89#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
90#define BAD_R_STAT (BUSY_STAT | ERR_STAT)
91#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
92#define BAD_STAT (BAD_R_STAT | DRQ_STAT)
93#define DRIVE_READY (READY_STAT | SEEK_STAT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95#define BAD_CRC (ABRT_ERR | ICRC_ERR)
96
97#define SATA_NR_PORTS (3) /* 16 possible ?? */
98
99#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103/*
104 * Our Physical Region Descriptor (PRD) table should be large enough
105 * to handle the biggest I/O request we are likely to see. Since requests
106 * can have no more than 256 sectors, and since the typical blocksize is
107 * two or more sectors, we could get by with a limit of 128 entries here for
108 * the usual worst case. Most requests seem to include some contiguous blocks,
109 * further reducing the number of table entries required.
110 *
111 * The driver reverts to PIO mode for individual requests that exceed
112 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
113 * 100% of all crazy scenarios here is not necessary.
114 *
115 * As it turns out though, we must allocate a full 4KB page for this,
116 * so the two PRD tables (ide0 & ide1) will each get half of that,
117 * allowing each to have about 256 entries (8 bytes each) from this.
118 */
119#define PRD_BYTES 8
120#define PRD_ENTRIES 256
121
122/*
123 * Some more useful definitions
124 */
125#define PARTN_BITS 6 /* number of minor dev bits for partitions */
126#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
127#define SECTOR_SIZE 512
128#define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
129#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
130
131/*
132 * Timeouts for various operations:
133 */
134#define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
135#define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
136#define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
137#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
138#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
139#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141/*
142 * Check for an interrupt and acknowledge the interrupt status
143 */
144struct hwif_s;
145typedef int (ide_ack_intr_t)(struct hwif_s *);
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147/*
148 * hwif_chipset_t is used to keep track of the specific hardware
149 * chipset used by each IDE interface, if known.
150 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200151enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 ide_cmd640, ide_dtc2278, ide_ali14xx,
153 ide_qd65xx, ide_umc8672, ide_ht6560b,
154 ide_rz1000, ide_trm290,
155 ide_cmd646, ide_cy82c693, ide_4drives,
156 ide_pmac, ide_etrax100, ide_acorn,
Bartlomiej Zolnierkiewicz9a0e77f2008-04-18 00:46:24 +0200157 ide_au1xxx, ide_palm3710
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200158};
159
160typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162/*
163 * Structure to hold all information about the location of this port
164 */
165typedef struct hw_regs_s {
166 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
167 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
169 hwif_chipset_t chipset;
Hannes Reinecke4349d5c2005-11-09 22:47:18 +0100170 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171} hw_regs_t;
172
Bartlomiej Zolnierkiewicz59bff5b2008-04-26 17:36:32 +0200173struct hwif_s *ide_find_port(void);
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100174void ide_init_port_data(struct hwif_s *, unsigned int);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100175void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177static inline void ide_std_init_ports(hw_regs_t *hw,
178 unsigned long io_addr,
179 unsigned long ctl_addr)
180{
181 unsigned int i;
182
183 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
184 hw->io_ports[i] = io_addr++;
185
186 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
187}
188
189#include <asm/ide.h>
190
Matt Mackall83d7dbc2006-10-03 01:14:16 -0700191#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
192#undef MAX_HWIFS
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100193#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
194#endif
195
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196/* Currently only m68k, apus and m8xx need it */
197#ifndef IDE_ARCH_ACK_INTR
198# define ide_ack_intr(hwif) (1)
199#endif
200
201/* Currently only Atari needs it */
202#ifndef IDE_ARCH_LOCK
203# define ide_release_lock() do {} while (0)
204# define ide_get_lock(hdlr, data) do {} while (0)
205#endif /* IDE_ARCH_LOCK */
206
207/*
208 * Now for the data we need to maintain per-drive: ide_drive_t
209 */
210
211#define ide_scsi 0x21
212#define ide_disk 0x20
213#define ide_optical 0x7
214#define ide_cdrom 0x5
215#define ide_tape 0x1
216#define ide_floppy 0x0
217
218/*
219 * Special Driver Flags
220 *
221 * set_geometry : respecify drive geometry
222 * recalibrate : seek to cyl 0
223 * set_multmode : set multmode count
224 * set_tune : tune interface for drive
225 * serviced : service command
226 * reserved : unused
227 */
228typedef union {
229 unsigned all : 8;
230 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 unsigned set_geometry : 1;
232 unsigned recalibrate : 1;
233 unsigned set_multmode : 1;
234 unsigned set_tune : 1;
235 unsigned serviced : 1;
236 unsigned reserved : 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 } b;
238} special_t;
239
240/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 * ATA-IDE Select Register, aka Device-Head
242 *
243 * head : always zeros here
244 * unit : drive select number: 0/1
245 * bit5 : always 1
246 * lba : using LBA instead of CHS
247 * bit7 : always 1
248 */
249typedef union {
250 unsigned all : 8;
251 struct {
252#if defined(__LITTLE_ENDIAN_BITFIELD)
253 unsigned head : 4;
254 unsigned unit : 1;
255 unsigned bit5 : 1;
256 unsigned lba : 1;
257 unsigned bit7 : 1;
258#elif defined(__BIG_ENDIAN_BITFIELD)
259 unsigned bit7 : 1;
260 unsigned lba : 1;
261 unsigned bit5 : 1;
262 unsigned unit : 1;
263 unsigned head : 4;
264#else
265#error "Please fix <asm/byteorder.h>"
266#endif
267 } b;
268} select_t, ata_select_t;
269
270/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 * Status returned from various ide_ functions
272 */
273typedef enum {
274 ide_stopped, /* no drive operation was started */
275 ide_started, /* a drive operation was started, handler was set */
276} ide_startstop_t;
277
278struct ide_driver_s;
279struct ide_settings_s;
280
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100281#ifdef CONFIG_BLK_DEV_IDEACPI
282struct ide_acpi_drive_link;
283struct ide_acpi_hwif_link;
284#endif
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286typedef struct ide_drive_s {
287 char name[4]; /* drive name, such as "hda" */
288 char driver_req[10]; /* requests specific driver */
289
Jens Axboe165125e2007-07-24 09:28:11 +0200290 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
292 struct request *rq; /* current request */
293 struct ide_drive_s *next; /* circular list of hwgroup drives */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 void *driver_data; /* extra driver data */
295 struct hd_driveid *id; /* drive model identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200296#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
298 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200299#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
301
302 unsigned long sleep; /* sleep until this time */
303 unsigned long service_start; /* time we started last request */
304 unsigned long service_time; /* service time of last request */
305 unsigned long timeout; /* max time to wait for irq */
306
307 special_t special; /* special action flags */
308 select_t select; /* basic drive/head select reg value */
309
310 u8 keep_settings; /* restore settings after drive reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 u8 using_dma; /* disk is using dma for read/write */
312 u8 retry_pio; /* retrying dma capable host in pio */
313 u8 state; /* retry state */
314 u8 waiting_for_dma; /* dma currently in progress */
315 u8 unmask; /* okay to unmask other irqs */
Jens Axboe36193482006-07-28 08:54:59 +0200316 u8 noflush; /* don't attempt flushes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 u8 dsc_overlap; /* DSC overlap */
318 u8 nice1; /* give potential excess bandwidth */
319
320 unsigned present : 1; /* drive is physically present */
321 unsigned dead : 1; /* device ejected hint */
322 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
323 unsigned noprobe : 1; /* from: hdx=noprobe */
324 unsigned removable : 1; /* 1 if need to do check_media_change */
325 unsigned attach : 1; /* needed for removable devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
327 unsigned no_unmask : 1; /* disallow setting unmask bit */
328 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
329 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +0200331 unsigned nodma : 1; /* disallow DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
333 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
334 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
335 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
337 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
338 unsigned post_reset : 1;
Bartlomiej Zolnierkiewicz7f8f48a2007-05-10 00:01:10 +0200339 unsigned udma33_warned : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200341 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 u8 quirk_list; /* considered quirky, set for a specific host */
343 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200345 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 u8 dn; /* now wide spread use */
347 u8 wcache; /* status of write cache */
348 u8 acoustic; /* acoustic management */
349 u8 media; /* disk, cdrom, tape, floppy, ... */
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200350 u8 ctl; /* "normal" value for Control register */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 u8 ready_stat; /* min status value for drive ready */
352 u8 mult_count; /* current multiple sector setting */
353 u8 mult_req; /* requested multiple sector setting */
354 u8 tune_req; /* requested drive tuning setting */
355 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
356 u8 bad_wstat; /* used for ignoring WRERR_STAT */
357 u8 nowerr; /* used for ignoring WRERR_STAT */
358 u8 sect0; /* offset of first sector for DM6:DDO */
359 u8 head; /* "real" number of heads */
360 u8 sect; /* "real" sectors per track */
361 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
362 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
363
364 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
365 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200366 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 unsigned int failures; /* current failure count */
368 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700369 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370
371 u64 capacity64; /* total number of sectors */
372
373 int lun; /* logical unit */
374 int crc_count; /* crc counter to reduce drive speed */
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100375#ifdef CONFIG_BLK_DEV_IDEACPI
376 struct ide_acpi_drive_link *acpidata;
377#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 struct list_head list;
379 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800380 struct completion gendev_rel_comp; /* to deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381} ide_drive_t;
382
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200383#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385#define IDE_CHIPSET_PCI_MASK \
386 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
387#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
388
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200389struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
391typedef struct hwif_s {
392 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
393 struct hwif_s *mate; /* other hwif from same PCI chip */
394 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
395 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
396
397 char name[6]; /* name of interface, eg. "ide0" */
398
399 /* task file registers for pata and sata */
400 unsigned long io_ports[IDE_NR_PORTS];
401 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 ide_drive_t drives[MAX_DRIVES]; /* drive info */
404
405 u8 major; /* our major number */
406 u8 index; /* 0 for ide0; 1 for ide1; ... */
407 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 u8 bus_state; /* power state of the IDE bus */
409
David Millere95d9c62007-10-22 02:09:00 -0700410 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200411
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200412 u8 pio_mask;
413
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 u8 ultra_mask;
415 u8 mwdma_mask;
416 u8 swdma_mask;
417
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200418 u8 cbl; /* cable type */
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 hwif_chipset_t chipset; /* sub-module for tuning.. */
421
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100422 struct device *dev;
423
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200424 const struct ide_port_info *cds; /* chipset device struct */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200426 ide_ack_intr_t *ack_intr;
427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 void (*rw_disk)(ide_drive_t *, struct request *);
429
430#if 0
431 ide_hwif_ops_t *hwifops;
432#else
Bartlomiej Zolnierkiewicz1f2cf8b2008-02-02 19:56:40 +0100433 /* host specific initialization of devices on a port */
434 void (*port_init_devs)(struct hwif_s *);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200435 /* routine to program host for PIO mode */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200436 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200437 /* routine to program host for DMA mode */
438 void (*set_dma_mode)(ide_drive_t *, const u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 /* tweaks hardware to select drive */
440 void (*selectproc)(ide_drive_t *);
441 /* chipset polling based on hba specifics */
442 int (*reset_poll)(ide_drive_t *);
443 /* chipset specific changes to default for device-hba resets */
444 void (*pre_reset)(ide_drive_t *);
445 /* routine to reset controller after a disk reset */
446 void (*resetproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 /* special host masking for drive selection */
448 void (*maskproc)(ide_drive_t *, int);
449 /* check host's drive quirk list */
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100450 void (*quirkproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451#endif
Sergei Shtylyovb4e44362007-10-11 23:53:58 +0200452 u8 (*mdma_filter)(ide_drive_t *);
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +0200453 u8 (*udma_filter)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100455 u8 (*cable_detect)(struct hwif_s *);
456
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 void (*ata_input_data)(ide_drive_t *, void *, u32);
458 void (*ata_output_data)(ide_drive_t *, void *, u32);
459
460 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
461 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
462
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100463 void (*dma_host_set)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 int (*dma_setup)(ide_drive_t *);
465 void (*dma_exec_cmd)(ide_drive_t *, u8);
466 void (*dma_start)(ide_drive_t *);
467 int (*ide_dma_end)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 int (*ide_dma_test_irq)(ide_drive_t *drive);
Albert Leef0dd8712007-02-17 02:40:21 +0100469 void (*ide_dma_clear_irq)(ide_drive_t *drive);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200470 void (*dma_lost_irq)(ide_drive_t *drive);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200471 void (*dma_timeout)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472
473 void (*OUTB)(u8 addr, unsigned long port);
474 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
475 void (*OUTW)(u16 addr, unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 void (*OUTSW)(unsigned long port, void *addr, u32 count);
477 void (*OUTSL)(unsigned long port, void *addr, u32 count);
478
479 u8 (*INB)(unsigned long port);
480 u16 (*INW)(unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 void (*INSW)(unsigned long port, void *addr, u32 count);
482 void (*INSL)(unsigned long port, void *addr, u32 count);
483
484 /* dma physical region descriptor table (cpu view) */
485 unsigned int *dmatable_cpu;
486 /* dma physical region descriptor table (dma view) */
487 dma_addr_t dmatable_dma;
488 /* Scatter-gather list used to build the above */
489 struct scatterlist *sg_table;
490 int sg_max_nents; /* Maximum number of entries in it */
491 int sg_nents; /* Current number of entries in it */
492 int sg_dma_direction; /* dma transfer direction */
493
494 /* data phase of the active command (currently only valid for PIO/DMA) */
495 int data_phase;
496
497 unsigned int nsect;
498 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200499 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 unsigned int cursg_ofs;
501
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 int rqsize; /* max sectors per request */
503 int irq; /* our irq number */
504
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 unsigned long dma_base; /* base addr for dma ports */
506 unsigned long dma_command; /* dma command register */
507 unsigned long dma_vendor1; /* dma vendor 1 register */
508 unsigned long dma_status; /* dma status register */
509 unsigned long dma_vendor3; /* dma vendor 3 register */
510 unsigned long dma_prdtable; /* actual prd table address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 unsigned long config_data; /* for use by chipset-specific code */
513 unsigned long select_data; /* for use by chipset-specific code */
514
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700515 unsigned long extra_base; /* extra addr for dma ports */
516 unsigned extra_ports; /* number of extra dma ports */
517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 unsigned noprobe : 1; /* don't probe for this interface */
519 unsigned present : 1; /* this interface exists */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 unsigned serialized : 1; /* serialized all channel operation */
521 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
522 unsigned reset : 1; /* reset after probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100524 unsigned mmio : 1; /* host uses MMIO */
Bartlomiej Zolnierkiewiczb0343042008-02-02 19:56:45 +0100525 unsigned straight8 : 1; /* Alan's straight 8 check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200527 struct device gendev;
528 struct device *portdev;
529
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800530 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531
532 void *hwif_data; /* extra hwif data */
533
534 unsigned dma;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100535
536#ifdef CONFIG_BLK_DEV_IDEACPI
537 struct ide_acpi_hwif_link *acpidata;
538#endif
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800539} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
541/*
542 * internal ide interrupt handler type
543 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
545typedef int (ide_expiry_t)(ide_drive_t *);
546
Borislav Petkov0eea6452008-02-02 19:56:36 +0100547/* used by ide-cd, ide-floppy, etc. */
548typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
549
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550typedef struct hwgroup_s {
551 /* irq handler, if active */
552 ide_startstop_t (*handler)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100553
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 /* BOOL: protects all fields below */
555 volatile int busy;
556 /* BOOL: wake us up on timer expiry */
557 unsigned int sleeping : 1;
558 /* BOOL: polling active & poll_timeout field valid */
559 unsigned int polling : 1;
Alan Cox913759a2006-10-03 01:14:33 -0700560 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
561 unsigned int resetting : 1;
562
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 /* current drive */
564 ide_drive_t *drive;
565 /* ptr to current hwif in linked-list */
566 ide_hwif_t *hwif;
567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 /* current request */
569 struct request *rq;
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100570
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 /* failsafe timer */
572 struct timer_list timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 /* timeout value during long polls */
574 unsigned long poll_timeout;
575 /* queried upon timeouts */
576 int (*expiry)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100577
Suleiman Souhlal23450312007-04-10 22:38:37 +0200578 int req_gen;
579 int req_gen_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580} ide_hwgroup_t;
581
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200582typedef struct ide_driver_s ide_driver_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200584extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200585
586int set_io_32bit(ide_drive_t *, int);
587int set_pio_mode(ide_drive_t *, int);
588int set_using_dma(ide_drive_t *, int);
589
Borislav Petkoveaec3e72008-04-18 00:46:27 +0200590/* ATAPI packet command flags */
591enum {
592 /* set when an error is considered normal - no retry (ide-tape) */
593 PC_FLAG_ABORT = (1 << 0),
594 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
595 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
596 PC_FLAG_DMA_OK = (1 << 3),
597 PC_FLAG_DMA_RECOMMENDED = (1 << 4),
598 PC_FLAG_DMA_IN_PROGRESS = (1 << 5),
599 PC_FLAG_DMA_ERROR = (1 << 6),
600 PC_FLAG_WRITING = (1 << 7),
601 /* command timed out */
602 PC_FLAG_TIMEDOUT = (1 << 8),
603};
604
Borislav Petkov8303b462008-04-18 00:46:26 +0200605struct ide_atapi_pc {
606 /* actual packet bytes */
607 u8 c[12];
608 /* incremented on each retry */
609 int retries;
610 int error;
611
612 /* bytes to transfer */
613 int req_xfer;
614 /* bytes actually transferred */
615 int xferred;
616
617 /* data buffer */
618 u8 *buf;
619 /* current buffer position */
620 u8 *cur_pos;
621 int buf_size;
622 /* missing/available data on the current buffer */
623 int b_count;
624
625 /* the corresponding request */
626 struct request *rq;
627
628 unsigned long flags;
629
630 /*
631 * those are more or less driver-specific and some of them are subject
632 * to change/removal later.
633 */
634 u8 pc_buf[256];
635 void (*idefloppy_callback) (ide_drive_t *);
636 ide_startstop_t (*idetape_callback) (ide_drive_t *);
637
638 /* idetape only */
639 struct idetape_bh *bh;
640 char *b_data;
641
642 /* idescsi only for now */
643 struct scatterlist *sg;
644 unsigned int sg_cnt;
645
646 struct scsi_cmnd *scsi_cmd;
647 void (*done) (struct scsi_cmnd *);
648
649 unsigned long timeout;
650};
651
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200652#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653/*
654 * configurable drive settings
655 */
656
657#define TYPE_INT 0
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200658#define TYPE_BYTE 1
659#define TYPE_SHORT 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
661#define SETTING_READ (1 << 0)
662#define SETTING_WRITE (1 << 1)
663#define SETTING_RW (SETTING_READ | SETTING_WRITE)
664
665typedef int (ide_procset_t)(ide_drive_t *, int);
666typedef struct ide_settings_s {
667 char *name;
668 int rw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 int data_type;
670 int min;
671 int max;
672 int mul_factor;
673 int div_factor;
674 void *data;
675 ide_procset_t *set;
676 int auto_remove;
677 struct ide_settings_s *next;
678} ide_settings_t;
679
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200680int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
682/*
683 * /proc/ide interface
684 */
685typedef struct {
686 const char *name;
687 mode_t mode;
688 read_proc_t *read_proc;
689 write_proc_t *write_proc;
690} ide_proc_entry_t;
691
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200692void proc_ide_create(void);
693void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200694void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100695void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200696void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200697void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200698void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
699void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
700
701void ide_add_generic_settings(ide_drive_t *);
702
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703read_proc_t proc_ide_read_capacity;
704read_proc_t proc_ide_read_geometry;
705
706#ifdef CONFIG_BLK_DEV_IDEPCI
707void ide_pci_create_host_proc(const char *, get_info_t *);
708#endif
709
710/*
711 * Standard exit stuff:
712 */
713#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
714{ \
715 len -= off; \
716 if (len < count) { \
717 *eof = 1; \
718 if (len <= 0) \
719 return 0; \
720 } else \
721 len = count; \
722 *start = page + off; \
723 return len; \
724}
725#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200726static inline void proc_ide_create(void) { ; }
727static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200728static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100729static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200730static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200731static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200732static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
733static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
734static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
736#endif
737
738/*
739 * Power Management step value (rq->pm->pm_step).
740 *
741 * The step value starts at 0 (ide_pm_state_start_suspend) for a
742 * suspend operation or 1000 (ide_pm_state_start_resume) for a
743 * resume operation.
744 *
745 * For each step, the core calls the subdriver start_power_step() first.
746 * This can return:
747 * - ide_stopped : In this case, the core calls us back again unless
748 * step have been set to ide_power_state_completed.
749 * - ide_started : In this case, the channel is left busy until an
750 * async event (interrupt) occurs.
751 * Typically, start_power_step() will issue a taskfile request with
752 * do_rw_taskfile().
753 *
754 * Upon reception of the interrupt, the core will call complete_power_step()
755 * with the error code if any. This routine should update the step value
756 * and return. It should not start a new request. The core will call
757 * start_power_step for the new step value, unless step have been set to
758 * ide_power_state_completed.
759 *
760 * Subdrivers are expected to define their own additional power
761 * steps from 1..999 for suspend and from 1001..1999 for resume,
762 * other values are reserved for future use.
763 */
764
765enum {
766 ide_pm_state_completed = -1,
767 ide_pm_state_start_suspend = 0,
768 ide_pm_state_start_resume = 1000,
769};
770
771/*
772 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +0100773 *
774 * The gendriver.owner field should be set to the module owner of this driver.
775 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200777struct ide_driver_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 const char *version;
779 u8 media;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 unsigned supports_dsc_overlap : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
782 int (*end_request)(ide_drive_t *, int, int);
783 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
784 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +0000786 int (*probe)(ide_drive_t *);
787 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +0200788 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +0000789 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200790#ifdef CONFIG_IDE_PROC_FS
791 ide_proc_entry_t *proc;
792#endif
793};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794
Russell King4031bbe2006-01-06 11:41:00 +0000795#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
796
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
798
799/*
800 * ide_hwifs[] is the master data structure used to keep track
801 * of just about everything in ide.c. Whenever possible, routines
802 * should be using pointers to a drive (ide_drive_t *) or
803 * pointers to a hwif (ide_hwif_t *), rather than indexing this
804 * structure directly (the allocation/layout may change!).
805 *
806 */
807#ifndef _IDE_C
808extern ide_hwif_t ide_hwifs[]; /* master data repository */
809#endif
810extern int noautodma;
811
812extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -0700813int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
814 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
817
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +0100818void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
819 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
821ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
824
825ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
828
829extern void ide_fix_driveid(struct hd_driveid *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +0100830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831extern void ide_fixstring(u8 *, const int, const int);
832
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +0200833int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835extern ide_startstop_t ide_do_reset (ide_drive_t *);
836
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837extern void ide_init_drive_cmd (struct request *rq);
838
839/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 * "action" parameter type for ide_do_drive_cmd() below.
841 */
842typedef enum {
843 ide_wait, /* insert rq at end of list, and wait for it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 ide_preempt, /* insert rq in front of current request */
845 ide_head_wait, /* insert rq in front of current request and wait for it */
846 ide_end /* insert rq at end of list, but don't wait for it */
847} ide_action_t;
848
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
850
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
852
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100853enum {
854 IDE_TFLAG_LBA48 = (1 << 0),
855 IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100856 IDE_TFLAG_FLAGGED = (1 << 2),
857 IDE_TFLAG_OUT_DATA = (1 << 3),
858 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
859 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
860 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
861 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
862 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
863 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
864 IDE_TFLAG_OUT_HOB_NSECT |
865 IDE_TFLAG_OUT_HOB_LBAL |
866 IDE_TFLAG_OUT_HOB_LBAM |
867 IDE_TFLAG_OUT_HOB_LBAH,
868 IDE_TFLAG_OUT_FEATURE = (1 << 9),
869 IDE_TFLAG_OUT_NSECT = (1 << 10),
870 IDE_TFLAG_OUT_LBAL = (1 << 11),
871 IDE_TFLAG_OUT_LBAM = (1 << 12),
872 IDE_TFLAG_OUT_LBAH = (1 << 13),
873 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
874 IDE_TFLAG_OUT_NSECT |
875 IDE_TFLAG_OUT_LBAL |
876 IDE_TFLAG_OUT_LBAM |
877 IDE_TFLAG_OUT_LBAH,
Bartlomiej Zolnierkiewicz807e35d2008-01-25 22:17:10 +0100878 IDE_TFLAG_OUT_DEVICE = (1 << 14),
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100879 IDE_TFLAG_WRITE = (1 << 15),
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100880 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
881 IDE_TFLAG_IN_DATA = (1 << 17),
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +0100882 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100883 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100884 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
885 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
886 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
887 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
888 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
889 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
890 IDE_TFLAG_IN_HOB_LBAM |
891 IDE_TFLAG_IN_HOB_LBAH,
892 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
893 IDE_TFLAG_IN_HOB_NSECT |
894 IDE_TFLAG_IN_HOB_LBA,
895 IDE_TFLAG_IN_NSECT = (1 << 25),
896 IDE_TFLAG_IN_LBAL = (1 << 26),
897 IDE_TFLAG_IN_LBAM = (1 << 27),
898 IDE_TFLAG_IN_LBAH = (1 << 28),
899 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
900 IDE_TFLAG_IN_LBAM |
901 IDE_TFLAG_IN_LBAH,
902 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
903 IDE_TFLAG_IN_LBA,
904 IDE_TFLAG_IN_DEVICE = (1 << 29),
Bartlomiej Zolnierkiewicz657cc1a2008-01-26 20:13:10 +0100905 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
906 IDE_TFLAG_IN_HOB,
907 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
908 IDE_TFLAG_IN_TF,
909 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
910 IDE_TFLAG_IN_DEVICE,
Tejun Heo35cf2b92008-01-26 20:13:10 +0100911 /* force 16-bit I/O operations */
912 IDE_TFLAG_IO_16BIT = (1 << 30),
Bartlomiej Zolnierkiewicz395d8ef2008-02-11 00:32:14 +0100913 /* ide_task_t was allocated using kmalloc() */
914 IDE_TFLAG_DYN = (1 << 31),
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100915};
916
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100917struct ide_taskfile {
918 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
919
920 u8 hob_feature; /* 1-5: additional data to support LBA48 */
921 u8 hob_nsect;
922 u8 hob_lbal;
923 u8 hob_lbam;
924 u8 hob_lbah;
925
926 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
927
928 union { /*  7: */
929 u8 error; /* read: error */
930 u8 feature; /* write: feature */
931 };
932
933 u8 nsect; /* 8: number of sectors */
934 u8 lbal; /* 9: LBA low */
935 u8 lbam; /* 10: LBA mid */
936 u8 lbah; /* 11: LBA high */
937
938 u8 device; /* 12: device select */
939
940 union { /* 13: */
941 u8 status; /*  read: status  */
942 u8 command; /* write: command */
943 };
944};
945
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946typedef struct ide_task_s {
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100947 union {
948 struct ide_taskfile tf;
949 u8 tf_array[14];
950 };
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100951 u32 tf_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 int data_phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 struct request *rq; /* copy of request */
954 void *special; /* valid_t generally */
955} ide_task_t;
956
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100957void ide_tf_load(ide_drive_t *, ide_task_t *);
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100958void ide_tf_read(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959
960extern void SELECT_DRIVE(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961extern void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
963extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +0100965void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
966
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100967ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968
Tejun Heo4d7a9842008-01-26 20:13:11 +0100969void task_end_request(ide_drive_t *, struct request *, u8);
970
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100971int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100972int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
973
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
975int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
976int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
977
978extern int system_bus_clock(void);
979
980extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981extern int ide_config_drive_speed(ide_drive_t *, u8);
982extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
984
985extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
986
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
988
989extern int ide_spin_wait_hwgroup(ide_drive_t *);
990extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +0100991extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +0200992extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993
994void ide_init_disk(struct gendisk *, ide_drive_t *);
995
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +0200996#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -0800997extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
998#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +0200999#else
1000#define ide_pci_register_driver(d) pci_register_driver(d)
1001#endif
1002
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001003void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
1004void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001006#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001007void ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1008#else
1009static inline void ide_hwif_setup_dma(ide_hwif_t *hwif,
1010 const struct ide_port_info *d) { }
1011#endif
1012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013extern void default_hwif_iops(ide_hwif_t *);
1014extern void default_hwif_mmiops(ide_hwif_t *);
1015extern void default_hwif_transport(ide_hwif_t *);
1016
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017typedef struct ide_pci_enablebit_s {
1018 u8 reg; /* byte pci reg holding the enable-bit */
1019 u8 mask; /* mask to isolate the enable-bit */
1020 u8 val; /* value of masked reg when "enabled" */
1021} ide_pci_enablebit_t;
1022
1023enum {
1024 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001025 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001026 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001027 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001028 /* don't use legacy PIO blacklist */
1029 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1030 /* don't use conservative PIO "downgrade" */
1031 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001032 /* use PIO8/9 for prefetch off/on */
1033 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1034 /* use PIO6/7 for fast-devsel off/on */
1035 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1036 /* use 100-102 and 200-202 PIO values to set DMA modes */
1037 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001038 /*
1039 * keep DMA setting when programming PIO mode, may be used only
1040 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1041 */
1042 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001043 /* program host for the transfer mode after programming device */
1044 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1045 /* don't program host/device for the transfer mode ("smart" hosts) */
1046 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001047 /* trust BIOS for programming chipset/device for DMA */
1048 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001049 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001050 IDE_HFLAG_VDMA = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001051 /* ATAPI DMA is unsupported */
1052 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001053 /* set if host is a "non-bootable" controller */
1054 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001055 /* host doesn't support DMA */
1056 IDE_HFLAG_NO_DMA = (1 << 14),
1057 /* check if host is PCI IDE device before allowing DMA */
1058 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001059 /* don't autotune PIO */
1060 IDE_HFLAG_NO_AUTOTUNE = (1 << 16),
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001061 /* host is CS5510/CS5520 */
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001062 IDE_HFLAG_CS5520 = IDE_HFLAG_VDMA,
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001063 /* no LBA48 */
1064 IDE_HFLAG_NO_LBA48 = (1 << 17),
1065 /* no LBA48 DMA */
1066 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001067 /* data FIFO is cleared by an error */
1068 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001069 /* serialize ports */
1070 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001071 /* use legacy IRQs */
1072 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001073 /* force use of legacy IRQs */
1074 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz272a3702007-10-20 00:32:30 +02001075 /* limit LBA48 requests to 256 sectors */
1076 IDE_HFLAG_RQSIZE_256 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001077 /* use 32-bit I/O ops */
1078 IDE_HFLAG_IO_32BIT = (1 << 24),
1079 /* unmask IRQs */
1080 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +01001081 IDE_HFLAG_ABUSE_SET_DMA_MODE = (1 << 26),
Bartlomiej Zolnierkiewicz8704de82008-01-26 20:13:00 +01001082 /* host is CY82C693 */
1083 IDE_HFLAG_CY82C693 = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001084 /* force host out of "simplex" mode */
1085 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001086 /* DSC overlap is unsupported */
1087 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001088 /* never use 32-bit I/O ops */
1089 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1090 /* never unmask IRQs */
1091 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092};
1093
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001094#ifdef CONFIG_BLK_DEV_OFFBOARD
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001095# define IDE_HFLAG_OFF_BOARD 0
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +02001096#else
1097# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001098#endif
1099
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001100struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1103 void (*init_iops)(ide_hwif_t *);
1104 void (*init_hwif)(ide_hwif_t *);
1105 void (*init_dma)(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 ide_pci_enablebit_t enablebits[2];
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001107 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz3071a9d2008-01-25 22:17:17 +01001108 u8 extra;
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001109 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001110 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001111 u8 swdma_mask;
1112 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001113 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001114};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001116int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
1117int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118
1119void ide_map_sg(ide_drive_t *, struct request *);
1120void ide_init_sg_cmd(ide_drive_t *, struct request *);
1121
1122#define BAD_DMA_DRIVE 0
1123#define GOOD_DMA_DRIVE 1
1124
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001125struct drive_list_entry {
1126 const char *id_model;
1127 const char *id_firmware;
1128};
1129
1130int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001131
1132#ifdef CONFIG_BLK_DEV_IDEDMA
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001134int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001135
1136u8 ide_find_dma_mode(ide_drive_t *, u8);
1137
1138static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1139{
1140 return ide_find_dma_mode(drive, XFER_UDMA_6);
1141}
1142
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001143void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001144void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001145void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001146int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001147void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148ide_startstop_t ide_dma_intr(ide_drive_t *);
1149
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001150int ide_build_sglist(ide_drive_t *, struct request *);
1151void ide_destroy_dmatable(ide_drive_t *);
1152
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001153#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154extern int ide_build_dmatable(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155extern int ide_release_dma(ide_hwif_t *);
Sergei Shtylyovecf327962008-02-01 23:09:30 +01001156extern void ide_setup_dma(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001158void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159extern int ide_dma_setup(ide_drive_t *);
1160extern void ide_dma_start(ide_drive_t *);
1161extern int __ide_dma_end(ide_drive_t *);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +02001162extern void ide_dma_lost_irq(ide_drive_t *);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +02001163extern void ide_dma_timeout(ide_drive_t *);
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001164#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165
1166#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001167static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001168static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001169static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001170static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001171static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001172static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001174static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001175static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176#endif /* CONFIG_BLK_DEV_IDEDMA */
1177
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001178#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179static inline void ide_release_dma(ide_hwif_t *drive) {;}
1180#endif
1181
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001182#ifdef CONFIG_BLK_DEV_IDEACPI
1183extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1184extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1185extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1186extern void ide_acpi_init(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001187void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001188extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001189#else
1190static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1191static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1192static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1193static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001194static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001195static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001196#endif
1197
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +01001198void ide_remove_port_from_hwgroup(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1200extern void ide_hwif_release_regions(ide_hwif_t* hwif);
Bartlomiej Zolnierkiewicz93de00f2008-04-18 00:46:24 +02001201void ide_unregister(unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
1203void ide_register_region(struct gendisk *);
1204void ide_unregister_region(struct gendisk *);
1205
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001206void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001208int ide_device_add_all(u8 *idx, const struct ide_port_info *);
1209int ide_device_add(u8 idx[4], const struct ide_port_info *);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001210void ide_port_unregister_devices(ide_hwif_t *);
1211void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212
1213static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1214{
1215 return hwif->hwif_data;
1216}
1217
1218static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1219{
1220 hwif->hwif_data = data;
1221}
1222
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001223const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1225extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1226
Bartlomiej Zolnierkiewicz22298332007-07-20 01:11:55 +02001227static inline int ide_dev_has_iordy(struct hd_driveid *id)
1228{
1229 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1230}
1231
Sergei Shtylyov6c3c22f2007-09-11 22:28:36 +02001232static inline int ide_dev_is_sata(struct hd_driveid *id)
1233{
1234 /*
1235 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1236 * verifying that word 80 by casting it to a signed type --
1237 * this trick allows us to filter out the reserved values of
1238 * 0x0000 and 0xffff along with the earlier ATA revisions...
1239 */
1240 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1241 return 1;
1242 return 0;
1243}
1244
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001245u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246u8 ide_dump_status(ide_drive_t *, const char *, u8);
1247
1248typedef struct ide_pio_timings_s {
1249 int setup_time; /* Address setup (ns) minimum */
1250 int active_time; /* Active pulse (ns) minimum */
Sergei Shtylyov81d368e2007-03-03 17:48:53 +01001251 int cycle_time; /* Cycle time (ns) minimum = */
1252 /* active + recovery (+ setup for some chips) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253} ide_pio_timings_t;
1254
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +02001255unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001256u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257extern const ide_pio_timings_t ide_pio_timings[6];
1258
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001259int ide_set_pio_mode(ide_drive_t *, u8);
1260int ide_set_dma_mode(ide_drive_t *, u8);
1261
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001262void ide_set_pio(ide_drive_t *, u8);
1263
1264static inline void ide_set_max_pio(ide_drive_t *drive)
1265{
1266 ide_set_pio(drive, 255);
1267}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268
1269extern spinlock_t ide_lock;
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001270extern struct mutex ide_cfg_mtx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271/*
1272 * Structure locking:
1273 *
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001274 * ide_cfg_mtx and ide_lock together protect changes to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 * ide_hwif_t->{next,hwgroup}
1276 * ide_drive_t->next
1277 *
1278 * ide_hwgroup_t->busy: ide_lock
1279 * ide_hwgroup_t->hwif: ide_lock
1280 * ide_hwif_t->mate: constant, no locking
1281 * ide_drive_t->hwif: constant, no locking
1282 */
1283
Ingo Molnar366c7f52006-07-03 00:25:25 -07001284#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285
1286extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001287extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
1289/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1290#define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1291
1292/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1293#define ide_id_has_flush_cache_ext(id) \
1294 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1295
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001296static inline void ide_dump_identify(u8 *id)
1297{
1298 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1299}
1300
Christoph Lameter86b37862005-08-09 19:59:21 -07001301static inline int hwif_to_node(ide_hwif_t *hwif)
1302{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +01001303 struct pci_dev *dev = to_pci_dev(hwif->dev);
Andi Kleen1f07e982008-02-11 01:35:20 +01001304 return hwif->dev ? pcibus_to_node(dev->bus) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001305}
1306
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001307static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
1308{
1309 ide_hwif_t *hwif = HWIF(drive);
1310
1311 return &hwif->drives[(drive->dn ^ 1) & 1];
1312}
1313
Bartlomiej Zolnierkiewicz81ca6912008-01-26 20:13:08 +01001314static inline void ide_set_irq(ide_drive_t *drive, int on)
1315{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +02001316 ide_hwif_t *hwif = drive->hwif;
1317
1318 hwif->OUTB(drive->ctl | (on ? 0 : 2),
1319 hwif->io_ports[IDE_CONTROL_OFFSET]);
Bartlomiej Zolnierkiewicz81ca6912008-01-26 20:13:08 +01001320}
1321
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +01001322static inline u8 ide_read_status(ide_drive_t *drive)
1323{
1324 ide_hwif_t *hwif = drive->hwif;
1325
1326 return hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
1327}
1328
1329static inline u8 ide_read_altstatus(ide_drive_t *drive)
1330{
1331 ide_hwif_t *hwif = drive->hwif;
1332
1333 return hwif->INB(hwif->io_ports[IDE_CONTROL_OFFSET]);
1334}
1335
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +01001336static inline u8 ide_read_error(ide_drive_t *drive)
1337{
1338 ide_hwif_t *hwif = drive->hwif;
1339
1340 return hwif->INB(hwif->io_ports[IDE_ERROR_OFFSET]);
1341}
1342
Bartlomiej Zolnierkiewicz7616c0a2008-04-18 00:46:26 +02001343/*
1344 * Too bad. The drive wants to send us data which we are not ready to accept.
1345 * Just throw it away.
1346 */
1347static inline void ide_atapi_discard_data(ide_drive_t *drive, unsigned bcount)
1348{
1349 ide_hwif_t *hwif = drive->hwif;
1350
1351 /* FIXME: use ->atapi_input_bytes */
1352 while (bcount--)
1353 (void)hwif->INB(hwif->io_ports[IDE_DATA_OFFSET]);
1354}
1355
1356static inline void ide_atapi_write_zeros(ide_drive_t *drive, unsigned bcount)
1357{
1358 ide_hwif_t *hwif = drive->hwif;
1359
1360 /* FIXME: use ->atapi_output_bytes */
1361 while (bcount--)
1362 hwif->OUTB(0, hwif->io_ports[IDE_DATA_OFFSET]);
1363}
1364
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365#endif /* _IDE_H */