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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>
12#include <linux/hdsmart.h>
13#include <linux/blkdev.h>
14#include <linux/proc_fs.h>
15#include <linux/interrupt.h>
16#include <linux/bitops.h>
17#include <linux/bio.h>
18#include <linux/device.h>
19#include <linux/pci.h>
Aleksey Makarovf36d4022006-01-09 15:59:27 -080020#include <linux/completion.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>
27#include <asm/semaphore.h>
Matthias Kaehlckef9383c42007-07-09 23:17:56 +020028#include <asm/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010030#if defined(CRIS) || defined(FRV)
31# define SUPPORT_VLB_SYNC 0
32#else
33# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#endif
35
36/*
37 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
38 * number.
39 */
40
41#define IDE_NO_IRQ (-1)
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043typedef unsigned char byte; /* used everywhere */
44
45/*
46 * Probably not wise to fiddle with these
47 */
48#define ERROR_MAX 8 /* Max read/write errors per sector */
49#define ERROR_RESET 3 /* Reset controller every 4th retry */
50#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
51
52/*
53 * Tune flags
54 */
55#define IDE_TUNE_NOAUTO 2
56#define IDE_TUNE_AUTO 1
57#define IDE_TUNE_DEFAULT 0
58
59/*
60 * state flags
61 */
62
63#define DMA_PIO_RETRY 1 /* retrying in PIO */
64
65#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
66#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
67
68/*
69 * Definitions for accessing IDE controller registers
70 */
71#define IDE_NR_PORTS (10)
72
73#define IDE_DATA_OFFSET (0)
74#define IDE_ERROR_OFFSET (1)
75#define IDE_NSECTOR_OFFSET (2)
76#define IDE_SECTOR_OFFSET (3)
77#define IDE_LCYL_OFFSET (4)
78#define IDE_HCYL_OFFSET (5)
79#define IDE_SELECT_OFFSET (6)
80#define IDE_STATUS_OFFSET (7)
81#define IDE_CONTROL_OFFSET (8)
82#define IDE_IRQ_OFFSET (9)
83
84#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
85#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087#define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
88#define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
89#define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
90#define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
91#define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
92#define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
93#define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
94#define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
95#define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
96#define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
97
98#define IDE_FEATURE_REG IDE_ERROR_REG
99#define IDE_COMMAND_REG IDE_STATUS_REG
100#define IDE_ALTSTATUS_REG IDE_CONTROL_REG
101#define IDE_IREASON_REG IDE_NSECTOR_REG
102#define IDE_BCOUNTL_REG IDE_LCYL_REG
103#define IDE_BCOUNTH_REG IDE_HCYL_REG
104
105#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
106#define BAD_R_STAT (BUSY_STAT | ERR_STAT)
107#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
108#define BAD_STAT (BAD_R_STAT | DRQ_STAT)
109#define DRIVE_READY (READY_STAT | SEEK_STAT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111#define BAD_CRC (ABRT_ERR | ICRC_ERR)
112
113#define SATA_NR_PORTS (3) /* 16 possible ?? */
114
115#define SATA_STATUS_OFFSET (0)
116#define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
117#define SATA_ERROR_OFFSET (1)
118#define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
119#define SATA_CONTROL_OFFSET (2)
120#define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
121
122#define SATA_MISC_OFFSET (0)
123#define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
124#define SATA_PHY_OFFSET (1)
125#define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
126#define SATA_IEN_OFFSET (2)
127#define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
128
129/*
130 * Our Physical Region Descriptor (PRD) table should be large enough
131 * to handle the biggest I/O request we are likely to see. Since requests
132 * can have no more than 256 sectors, and since the typical blocksize is
133 * two or more sectors, we could get by with a limit of 128 entries here for
134 * the usual worst case. Most requests seem to include some contiguous blocks,
135 * further reducing the number of table entries required.
136 *
137 * The driver reverts to PIO mode for individual requests that exceed
138 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
139 * 100% of all crazy scenarios here is not necessary.
140 *
141 * As it turns out though, we must allocate a full 4KB page for this,
142 * so the two PRD tables (ide0 & ide1) will each get half of that,
143 * allowing each to have about 256 entries (8 bytes each) from this.
144 */
145#define PRD_BYTES 8
146#define PRD_ENTRIES 256
147
148/*
149 * Some more useful definitions
150 */
151#define PARTN_BITS 6 /* number of minor dev bits for partitions */
152#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
153#define SECTOR_SIZE 512
154#define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
155#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
156
157/*
158 * Timeouts for various operations:
159 */
160#define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
161#define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
162#define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
163#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
164#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
165#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167/*
168 * Check for an interrupt and acknowledge the interrupt status
169 */
170struct hwif_s;
171typedef int (ide_ack_intr_t)(struct hwif_s *);
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173/*
174 * hwif_chipset_t is used to keep track of the specific hardware
175 * chipset used by each IDE interface, if known.
176 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200177enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 ide_cmd640, ide_dtc2278, ide_ali14xx,
179 ide_qd65xx, ide_umc8672, ide_ht6560b,
180 ide_rz1000, ide_trm290,
181 ide_cmd646, ide_cy82c693, ide_4drives,
182 ide_pmac, ide_etrax100, ide_acorn,
Pete Popov26a940e2005-09-15 08:03:12 +0000183 ide_au1xxx, ide_forced
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200184};
185
186typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
188/*
189 * Structure to hold all information about the location of this port
190 */
191typedef struct hw_regs_s {
192 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
193 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
195 hwif_chipset_t chipset;
Hannes Reinecke4349d5c2005-11-09 22:47:18 +0100196 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197} hw_regs_t;
198
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200199struct hwif_s * ide_find_port(unsigned long);
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100200void ide_init_port_data(struct hwif_s *, unsigned int);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100201void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200202
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100203struct ide_drive_s;
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100204int ide_register_hw(hw_regs_t *, void (*)(struct ide_drive_s *),
Bartlomiej Zolnierkiewiczfd9bb532007-10-20 00:32:31 +0200205 struct hwif_s **);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207void ide_setup_ports( hw_regs_t *hw,
208 unsigned long base,
209 int *offsets,
210 unsigned long ctrl,
211 unsigned long intr,
212 ide_ack_intr_t *ack_intr,
213#if 0
214 ide_io_ops_t *iops,
215#endif
216 int irq);
217
218static inline void ide_std_init_ports(hw_regs_t *hw,
219 unsigned long io_addr,
220 unsigned long ctl_addr)
221{
222 unsigned int i;
223
224 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
225 hw->io_ports[i] = io_addr++;
226
227 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
228}
229
230#include <asm/ide.h>
231
Matt Mackall83d7dbc2006-10-03 01:14:16 -0700232#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
233#undef MAX_HWIFS
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100234#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
235#endif
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237/* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
238#ifndef IDE_ARCH_OBSOLETE_DEFAULTS
239# define ide_default_io_base(index) (0)
240# define ide_default_irq(base) (0)
241# define ide_init_default_irq(base) (0)
242#endif
243
Bartlomiej Zolnierkiewicz847ddd22007-10-20 00:32:32 +0200244#ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245static inline void ide_init_hwif_ports(hw_regs_t *hw,
246 unsigned long io_addr,
247 unsigned long ctl_addr,
248 int *irq)
249{
250 if (!ctl_addr)
251 ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr));
252 else
253 ide_std_init_ports(hw, io_addr, ctl_addr);
254
255 if (irq)
256 *irq = 0;
257
258 hw->io_ports[IDE_IRQ_OFFSET] = 0;
259
260#ifdef CONFIG_PPC32
261 if (ppc_ide_md.ide_init_hwif)
262 ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq);
263#endif
264}
265#else
266static inline void ide_init_hwif_ports(hw_regs_t *hw,
267 unsigned long io_addr,
268 unsigned long ctl_addr,
269 int *irq)
270{
271 if (io_addr || ctl_addr)
272 printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
273}
Bartlomiej Zolnierkiewicz847ddd22007-10-20 00:32:32 +0200274#endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
276/* Currently only m68k, apus and m8xx need it */
277#ifndef IDE_ARCH_ACK_INTR
278# define ide_ack_intr(hwif) (1)
279#endif
280
281/* Currently only Atari needs it */
282#ifndef IDE_ARCH_LOCK
283# define ide_release_lock() do {} while (0)
284# define ide_get_lock(hdlr, data) do {} while (0)
285#endif /* IDE_ARCH_LOCK */
286
287/*
288 * Now for the data we need to maintain per-drive: ide_drive_t
289 */
290
291#define ide_scsi 0x21
292#define ide_disk 0x20
293#define ide_optical 0x7
294#define ide_cdrom 0x5
295#define ide_tape 0x1
296#define ide_floppy 0x0
297
298/*
299 * Special Driver Flags
300 *
301 * set_geometry : respecify drive geometry
302 * recalibrate : seek to cyl 0
303 * set_multmode : set multmode count
304 * set_tune : tune interface for drive
305 * serviced : service command
306 * reserved : unused
307 */
308typedef union {
309 unsigned all : 8;
310 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 unsigned set_geometry : 1;
312 unsigned recalibrate : 1;
313 unsigned set_multmode : 1;
314 unsigned set_tune : 1;
315 unsigned serviced : 1;
316 unsigned reserved : 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 } b;
318} special_t;
319
320/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 * ATA-IDE Select Register, aka Device-Head
322 *
323 * head : always zeros here
324 * unit : drive select number: 0/1
325 * bit5 : always 1
326 * lba : using LBA instead of CHS
327 * bit7 : always 1
328 */
329typedef union {
330 unsigned all : 8;
331 struct {
332#if defined(__LITTLE_ENDIAN_BITFIELD)
333 unsigned head : 4;
334 unsigned unit : 1;
335 unsigned bit5 : 1;
336 unsigned lba : 1;
337 unsigned bit7 : 1;
338#elif defined(__BIG_ENDIAN_BITFIELD)
339 unsigned bit7 : 1;
340 unsigned lba : 1;
341 unsigned bit5 : 1;
342 unsigned unit : 1;
343 unsigned head : 4;
344#else
345#error "Please fix <asm/byteorder.h>"
346#endif
347 } b;
348} select_t, ata_select_t;
349
350/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 * Status returned from various ide_ functions
352 */
353typedef enum {
354 ide_stopped, /* no drive operation was started */
355 ide_started, /* a drive operation was started, handler was set */
356} ide_startstop_t;
357
358struct ide_driver_s;
359struct ide_settings_s;
360
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100361#ifdef CONFIG_BLK_DEV_IDEACPI
362struct ide_acpi_drive_link;
363struct ide_acpi_hwif_link;
364#endif
365
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366typedef struct ide_drive_s {
367 char name[4]; /* drive name, such as "hda" */
368 char driver_req[10]; /* requests specific driver */
369
Jens Axboe165125e2007-07-24 09:28:11 +0200370 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
372 struct request *rq; /* current request */
373 struct ide_drive_s *next; /* circular list of hwgroup drives */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 void *driver_data; /* extra driver data */
375 struct hd_driveid *id; /* drive model identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200376#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
378 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200379#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
381
382 unsigned long sleep; /* sleep until this time */
383 unsigned long service_start; /* time we started last request */
384 unsigned long service_time; /* service time of last request */
385 unsigned long timeout; /* max time to wait for irq */
386
387 special_t special; /* special action flags */
388 select_t select; /* basic drive/head select reg value */
389
390 u8 keep_settings; /* restore settings after drive reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 u8 using_dma; /* disk is using dma for read/write */
392 u8 retry_pio; /* retrying dma capable host in pio */
393 u8 state; /* retry state */
394 u8 waiting_for_dma; /* dma currently in progress */
395 u8 unmask; /* okay to unmask other irqs */
Jens Axboe36193482006-07-28 08:54:59 +0200396 u8 noflush; /* don't attempt flushes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 u8 dsc_overlap; /* DSC overlap */
398 u8 nice1; /* give potential excess bandwidth */
399
400 unsigned present : 1; /* drive is physically present */
401 unsigned dead : 1; /* device ejected hint */
402 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
403 unsigned noprobe : 1; /* from: hdx=noprobe */
404 unsigned removable : 1; /* 1 if need to do check_media_change */
405 unsigned attach : 1; /* needed for removable devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
407 unsigned no_unmask : 1; /* disallow setting unmask bit */
408 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
409 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
410 unsigned nice0 : 1; /* give obvious excess bandwidth */
411 unsigned nice2 : 1; /* give a share in our own bandwidth */
412 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +0200413 unsigned nodma : 1; /* disallow DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
415 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
416 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
417 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
419 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
420 unsigned post_reset : 1;
Bartlomiej Zolnierkiewicz7f8f48a2007-05-10 00:01:10 +0200421 unsigned udma33_warned : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200423 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 u8 quirk_list; /* considered quirky, set for a specific host */
425 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200427 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 u8 dn; /* now wide spread use */
429 u8 wcache; /* status of write cache */
430 u8 acoustic; /* acoustic management */
431 u8 media; /* disk, cdrom, tape, floppy, ... */
432 u8 ctl; /* "normal" value for IDE_CONTROL_REG */
433 u8 ready_stat; /* min status value for drive ready */
434 u8 mult_count; /* current multiple sector setting */
435 u8 mult_req; /* requested multiple sector setting */
436 u8 tune_req; /* requested drive tuning setting */
437 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
438 u8 bad_wstat; /* used for ignoring WRERR_STAT */
439 u8 nowerr; /* used for ignoring WRERR_STAT */
440 u8 sect0; /* offset of first sector for DM6:DDO */
441 u8 head; /* "real" number of heads */
442 u8 sect; /* "real" sectors per track */
443 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
444 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
445
446 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
447 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200448 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 unsigned int failures; /* current failure count */
450 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700451 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
453 u64 capacity64; /* total number of sectors */
454
455 int lun; /* logical unit */
456 int crc_count; /* crc counter to reduce drive speed */
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100457#ifdef CONFIG_BLK_DEV_IDEACPI
458 struct ide_acpi_drive_link *acpidata;
459#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 struct list_head list;
461 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800462 struct completion gendev_rel_comp; /* to deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463} ide_drive_t;
464
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200465#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
466
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467#define IDE_CHIPSET_PCI_MASK \
468 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
469#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
470
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200471struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472
473typedef struct hwif_s {
474 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
475 struct hwif_s *mate; /* other hwif from same PCI chip */
476 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
477 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
478
479 char name[6]; /* name of interface, eg. "ide0" */
480
481 /* task file registers for pata and sata */
482 unsigned long io_ports[IDE_NR_PORTS];
483 unsigned long sata_scr[SATA_NR_PORTS];
484 unsigned long sata_misc[SATA_NR_PORTS];
485
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 ide_drive_t drives[MAX_DRIVES]; /* drive info */
487
488 u8 major; /* our major number */
489 u8 index; /* 0 for ide0; 1 for ide1; ... */
490 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
491 u8 straight8; /* Alan's straight 8 check */
492 u8 bus_state; /* power state of the IDE bus */
493
David Millere95d9c62007-10-22 02:09:00 -0700494 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200495
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200496 u8 pio_mask;
497
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 u8 ultra_mask;
499 u8 mwdma_mask;
500 u8 swdma_mask;
501
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200502 u8 cbl; /* cable type */
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 hwif_chipset_t chipset; /* sub-module for tuning.. */
505
506 struct pci_dev *pci_dev; /* for pci chipsets */
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200507 const struct ide_port_info *cds; /* chipset device struct */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200509 ide_ack_intr_t *ack_intr;
510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 void (*rw_disk)(ide_drive_t *, struct request *);
512
513#if 0
514 ide_hwif_ops_t *hwifops;
515#else
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200516 /* routine to program host for PIO mode */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200517 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200518 /* routine to program host for DMA mode */
519 void (*set_dma_mode)(ide_drive_t *, const u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 /* tweaks hardware to select drive */
521 void (*selectproc)(ide_drive_t *);
522 /* chipset polling based on hba specifics */
523 int (*reset_poll)(ide_drive_t *);
524 /* chipset specific changes to default for device-hba resets */
525 void (*pre_reset)(ide_drive_t *);
526 /* routine to reset controller after a disk reset */
527 void (*resetproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 /* special host masking for drive selection */
529 void (*maskproc)(ide_drive_t *, int);
530 /* check host's drive quirk list */
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100531 void (*quirkproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 /* driver soft-power interface */
533 int (*busproc)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534#endif
Sergei Shtylyovb4e44362007-10-11 23:53:58 +0200535 u8 (*mdma_filter)(ide_drive_t *);
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +0200536 u8 (*udma_filter)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537
538 void (*ata_input_data)(ide_drive_t *, void *, u32);
539 void (*ata_output_data)(ide_drive_t *, void *, u32);
540
541 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
542 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
543
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100544 void (*dma_host_set)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 int (*dma_setup)(ide_drive_t *);
546 void (*dma_exec_cmd)(ide_drive_t *, u8);
547 void (*dma_start)(ide_drive_t *);
548 int (*ide_dma_end)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 int (*ide_dma_test_irq)(ide_drive_t *drive);
Albert Leef0dd8712007-02-17 02:40:21 +0100550 void (*ide_dma_clear_irq)(ide_drive_t *drive);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200551 void (*dma_lost_irq)(ide_drive_t *drive);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200552 void (*dma_timeout)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553
554 void (*OUTB)(u8 addr, unsigned long port);
555 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
556 void (*OUTW)(u16 addr, unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 void (*OUTSW)(unsigned long port, void *addr, u32 count);
558 void (*OUTSL)(unsigned long port, void *addr, u32 count);
559
560 u8 (*INB)(unsigned long port);
561 u16 (*INW)(unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 void (*INSW)(unsigned long port, void *addr, u32 count);
563 void (*INSL)(unsigned long port, void *addr, u32 count);
564
565 /* dma physical region descriptor table (cpu view) */
566 unsigned int *dmatable_cpu;
567 /* dma physical region descriptor table (dma view) */
568 dma_addr_t dmatable_dma;
569 /* Scatter-gather list used to build the above */
570 struct scatterlist *sg_table;
571 int sg_max_nents; /* Maximum number of entries in it */
572 int sg_nents; /* Current number of entries in it */
573 int sg_dma_direction; /* dma transfer direction */
574
575 /* data phase of the active command (currently only valid for PIO/DMA) */
576 int data_phase;
577
578 unsigned int nsect;
579 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200580 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 unsigned int cursg_ofs;
582
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 int rqsize; /* max sectors per request */
584 int irq; /* our irq number */
585
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 unsigned long dma_base; /* base addr for dma ports */
587 unsigned long dma_command; /* dma command register */
588 unsigned long dma_vendor1; /* dma vendor 1 register */
589 unsigned long dma_status; /* dma status register */
590 unsigned long dma_vendor3; /* dma vendor 3 register */
591 unsigned long dma_prdtable; /* actual prd table address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 unsigned long config_data; /* for use by chipset-specific code */
594 unsigned long select_data; /* for use by chipset-specific code */
595
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700596 unsigned long extra_base; /* extra addr for dma ports */
597 unsigned extra_ports; /* number of extra dma ports */
598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 unsigned noprobe : 1; /* don't probe for this interface */
600 unsigned present : 1; /* this interface exists */
601 unsigned hold : 1; /* this interface is always present */
602 unsigned serialized : 1; /* serialized all channel operation */
603 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
604 unsigned reset : 1; /* reset after probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 unsigned auto_poll : 1; /* supports nop auto-poll */
606 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
Kumar Gala208a08f2006-03-24 03:18:21 -0800607 unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100608 unsigned mmio : 1; /* host uses MMIO */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
610 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800611 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612
613 void *hwif_data; /* extra hwif data */
614
615 unsigned dma;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100616
617#ifdef CONFIG_BLK_DEV_IDEACPI
618 struct ide_acpi_hwif_link *acpidata;
619#endif
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800620} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
622/*
623 * internal ide interrupt handler type
624 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
626typedef int (ide_expiry_t)(ide_drive_t *);
627
628typedef struct hwgroup_s {
629 /* irq handler, if active */
630 ide_startstop_t (*handler)(ide_drive_t *);
631 /* irq handler, suspended if active */
632 ide_startstop_t (*handler_save)(ide_drive_t *);
633 /* BOOL: protects all fields below */
634 volatile int busy;
635 /* BOOL: wake us up on timer expiry */
636 unsigned int sleeping : 1;
637 /* BOOL: polling active & poll_timeout field valid */
638 unsigned int polling : 1;
Alan Cox913759a2006-10-03 01:14:33 -0700639 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
640 unsigned int resetting : 1;
641
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 /* current drive */
643 ide_drive_t *drive;
644 /* ptr to current hwif in linked-list */
645 ide_hwif_t *hwif;
646
647 /* for pci chipsets */
648 struct pci_dev *pci_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
650 /* current request */
651 struct request *rq;
652 /* failsafe timer */
653 struct timer_list timer;
654 /* local copy of current write rq */
655 struct request wrq;
656 /* timeout value during long polls */
657 unsigned long poll_timeout;
658 /* queried upon timeouts */
659 int (*expiry)(ide_drive_t *);
660 /* ide_system_bus_speed */
661 int pio_clock;
Suleiman Souhlal23450312007-04-10 22:38:37 +0200662 int req_gen;
663 int req_gen_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664
665 unsigned char cmd_buf[4];
666} ide_hwgroup_t;
667
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200668typedef struct ide_driver_s ide_driver_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200670extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200671
672int set_io_32bit(ide_drive_t *, int);
673int set_pio_mode(ide_drive_t *, int);
674int set_using_dma(ide_drive_t *, int);
675
676#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677/*
678 * configurable drive settings
679 */
680
681#define TYPE_INT 0
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200682#define TYPE_BYTE 1
683#define TYPE_SHORT 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
685#define SETTING_READ (1 << 0)
686#define SETTING_WRITE (1 << 1)
687#define SETTING_RW (SETTING_READ | SETTING_WRITE)
688
689typedef int (ide_procset_t)(ide_drive_t *, int);
690typedef struct ide_settings_s {
691 char *name;
692 int rw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 int data_type;
694 int min;
695 int max;
696 int mul_factor;
697 int div_factor;
698 void *data;
699 ide_procset_t *set;
700 int auto_remove;
701 struct ide_settings_s *next;
702} ide_settings_t;
703
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200704int 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 -0700705
706/*
707 * /proc/ide interface
708 */
709typedef struct {
710 const char *name;
711 mode_t mode;
712 read_proc_t *read_proc;
713 write_proc_t *write_proc;
714} ide_proc_entry_t;
715
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200716void proc_ide_create(void);
717void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200718void ide_proc_register_port(ide_hwif_t *);
719void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200720void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
721void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
722
723void ide_add_generic_settings(ide_drive_t *);
724
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725read_proc_t proc_ide_read_capacity;
726read_proc_t proc_ide_read_geometry;
727
728#ifdef CONFIG_BLK_DEV_IDEPCI
729void ide_pci_create_host_proc(const char *, get_info_t *);
730#endif
731
732/*
733 * Standard exit stuff:
734 */
735#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
736{ \
737 len -= off; \
738 if (len < count) { \
739 *eof = 1; \
740 if (len <= 0) \
741 return 0; \
742 } else \
743 len = count; \
744 *start = page + off; \
745 return len; \
746}
747#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200748static inline void proc_ide_create(void) { ; }
749static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200750static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
751static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200752static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
753static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
754static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
756#endif
757
758/*
759 * Power Management step value (rq->pm->pm_step).
760 *
761 * The step value starts at 0 (ide_pm_state_start_suspend) for a
762 * suspend operation or 1000 (ide_pm_state_start_resume) for a
763 * resume operation.
764 *
765 * For each step, the core calls the subdriver start_power_step() first.
766 * This can return:
767 * - ide_stopped : In this case, the core calls us back again unless
768 * step have been set to ide_power_state_completed.
769 * - ide_started : In this case, the channel is left busy until an
770 * async event (interrupt) occurs.
771 * Typically, start_power_step() will issue a taskfile request with
772 * do_rw_taskfile().
773 *
774 * Upon reception of the interrupt, the core will call complete_power_step()
775 * with the error code if any. This routine should update the step value
776 * and return. It should not start a new request. The core will call
777 * start_power_step for the new step value, unless step have been set to
778 * ide_power_state_completed.
779 *
780 * Subdrivers are expected to define their own additional power
781 * steps from 1..999 for suspend and from 1001..1999 for resume,
782 * other values are reserved for future use.
783 */
784
785enum {
786 ide_pm_state_completed = -1,
787 ide_pm_state_start_suspend = 0,
788 ide_pm_state_start_resume = 1000,
789};
790
791/*
792 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +0100793 *
794 * The gendriver.owner field should be set to the module owner of this driver.
795 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200797struct ide_driver_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 const char *version;
799 u8 media;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 unsigned supports_dsc_overlap : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
802 int (*end_request)(ide_drive_t *, int, int);
803 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
804 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +0000806 int (*probe)(ide_drive_t *);
807 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +0200808 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +0000809 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200810#ifdef CONFIG_IDE_PROC_FS
811 ide_proc_entry_t *proc;
812#endif
813};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
Russell King4031bbe2006-01-06 11:41:00 +0000815#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
816
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
818
819/*
820 * ide_hwifs[] is the master data structure used to keep track
821 * of just about everything in ide.c. Whenever possible, routines
822 * should be using pointers to a drive (ide_drive_t *) or
823 * pointers to a hwif (ide_hwif_t *), rather than indexing this
824 * structure directly (the allocation/layout may change!).
825 *
826 */
827#ifndef _IDE_C
828extern ide_hwif_t ide_hwifs[]; /* master data repository */
829#endif
830extern int noautodma;
831
832extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -0700833int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
834 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
837
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +0100838void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
839 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
841ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
844
845ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
848
849extern void ide_fix_driveid(struct hd_driveid *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +0100850
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851extern void ide_fixstring(u8 *, const int, const int);
852
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +0200853int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855extern ide_startstop_t ide_do_reset (ide_drive_t *);
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857extern void ide_init_drive_cmd (struct request *rq);
858
859/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 * "action" parameter type for ide_do_drive_cmd() below.
861 */
862typedef enum {
863 ide_wait, /* insert rq at end of list, and wait for it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864 ide_preempt, /* insert rq in front of current request */
865 ide_head_wait, /* insert rq in front of current request and wait for it */
866 ide_end /* insert rq at end of list, but don't wait for it */
867} ide_action_t;
868
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
870
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
872
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100873enum {
874 IDE_TFLAG_LBA48 = (1 << 0),
875 IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100876 IDE_TFLAG_FLAGGED = (1 << 2),
877 IDE_TFLAG_OUT_DATA = (1 << 3),
878 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
879 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
880 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
881 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
882 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
883 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
884 IDE_TFLAG_OUT_HOB_NSECT |
885 IDE_TFLAG_OUT_HOB_LBAL |
886 IDE_TFLAG_OUT_HOB_LBAM |
887 IDE_TFLAG_OUT_HOB_LBAH,
888 IDE_TFLAG_OUT_FEATURE = (1 << 9),
889 IDE_TFLAG_OUT_NSECT = (1 << 10),
890 IDE_TFLAG_OUT_LBAL = (1 << 11),
891 IDE_TFLAG_OUT_LBAM = (1 << 12),
892 IDE_TFLAG_OUT_LBAH = (1 << 13),
893 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
894 IDE_TFLAG_OUT_NSECT |
895 IDE_TFLAG_OUT_LBAL |
896 IDE_TFLAG_OUT_LBAM |
897 IDE_TFLAG_OUT_LBAH,
Bartlomiej Zolnierkiewicz807e35d2008-01-25 22:17:10 +0100898 IDE_TFLAG_OUT_DEVICE = (1 << 14),
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100899 IDE_TFLAG_WRITE = (1 << 15),
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100900 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
901 IDE_TFLAG_IN_DATA = (1 << 17),
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +0100902 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100903 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100904 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
905 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
906 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
907 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
908 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
909 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
910 IDE_TFLAG_IN_HOB_LBAM |
911 IDE_TFLAG_IN_HOB_LBAH,
912 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
913 IDE_TFLAG_IN_HOB_NSECT |
914 IDE_TFLAG_IN_HOB_LBA,
915 IDE_TFLAG_IN_NSECT = (1 << 25),
916 IDE_TFLAG_IN_LBAL = (1 << 26),
917 IDE_TFLAG_IN_LBAM = (1 << 27),
918 IDE_TFLAG_IN_LBAH = (1 << 28),
919 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
920 IDE_TFLAG_IN_LBAM |
921 IDE_TFLAG_IN_LBAH,
922 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
923 IDE_TFLAG_IN_LBA,
924 IDE_TFLAG_IN_DEVICE = (1 << 29),
Bartlomiej Zolnierkiewicz657cc1a2008-01-26 20:13:10 +0100925 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
926 IDE_TFLAG_IN_HOB,
927 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
928 IDE_TFLAG_IN_TF,
929 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
930 IDE_TFLAG_IN_DEVICE,
Tejun Heo35cf2b92008-01-26 20:13:10 +0100931 /* force 16-bit I/O operations */
932 IDE_TFLAG_IO_16BIT = (1 << 30),
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100933};
934
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100935struct ide_taskfile {
936 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
937
938 u8 hob_feature; /* 1-5: additional data to support LBA48 */
939 u8 hob_nsect;
940 u8 hob_lbal;
941 u8 hob_lbam;
942 u8 hob_lbah;
943
944 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
945
946 union { /*  7: */
947 u8 error; /* read: error */
948 u8 feature; /* write: feature */
949 };
950
951 u8 nsect; /* 8: number of sectors */
952 u8 lbal; /* 9: LBA low */
953 u8 lbam; /* 10: LBA mid */
954 u8 lbah; /* 11: LBA high */
955
956 u8 device; /* 12: device select */
957
958 union { /* 13: */
959 u8 status; /*  read: status  */
960 u8 command; /* write: command */
961 };
962};
963
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964typedef struct ide_task_s {
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100965 union {
966 struct ide_taskfile tf;
967 u8 tf_array[14];
968 };
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100969 u32 tf_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 int data_phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 struct request *rq; /* copy of request */
972 void *special; /* valid_t generally */
973} ide_task_t;
974
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100975void ide_tf_load(ide_drive_t *, ide_task_t *);
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100976void ide_tf_read(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977
978extern void SELECT_DRIVE(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979extern void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980
981extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +0100983void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
984
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100985ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986
Tejun Heo4d7a9842008-01-26 20:13:11 +0100987void task_end_request(ide_drive_t *, struct request *, u8);
988
Bartlomiej Zolnierkiewicz26245652008-01-26 20:13:11 +0100989u8 wait_drive_not_busy(ide_drive_t *);
990
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100991int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100992int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
993
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
995int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
996int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
997
998extern int system_bus_clock(void);
999
1000extern int ide_driveid_update(ide_drive_t *);
1001extern int ide_ata66_check(ide_drive_t *, ide_task_t *);
1002extern int ide_config_drive_speed(ide_drive_t *, u8);
1003extern u8 eighty_ninty_three (ide_drive_t *);
1004extern int set_transfer(ide_drive_t *, ide_task_t *);
1005extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1006
1007extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1010
1011extern int ide_spin_wait_hwgroup(ide_drive_t *);
1012extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +01001013extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001014extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015
1016void ide_init_disk(struct gendisk *, ide_drive_t *);
1017
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001018#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +01001019extern int ide_scan_direction;
1020int __init ide_scan_pcibus(void);
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001021extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1022#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001023#else
1024#define ide_pci_register_driver(d) pci_register_driver(d)
1025#endif
1026
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001027void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
1028void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029
1030extern void default_hwif_iops(ide_hwif_t *);
1031extern void default_hwif_mmiops(ide_hwif_t *);
1032extern void default_hwif_transport(ide_hwif_t *);
1033
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034typedef struct ide_pci_enablebit_s {
1035 u8 reg; /* byte pci reg holding the enable-bit */
1036 u8 mask; /* mask to isolate the enable-bit */
1037 u8 val; /* value of masked reg when "enabled" */
1038} ide_pci_enablebit_t;
1039
1040enum {
1041 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001042 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001043 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001044 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001045 /* don't use legacy PIO blacklist */
1046 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1047 /* don't use conservative PIO "downgrade" */
1048 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001049 /* use PIO8/9 for prefetch off/on */
1050 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1051 /* use PIO6/7 for fast-devsel off/on */
1052 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1053 /* use 100-102 and 200-202 PIO values to set DMA modes */
1054 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001055 /*
1056 * keep DMA setting when programming PIO mode, may be used only
1057 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1058 */
1059 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001060 /* program host for the transfer mode after programming device */
1061 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1062 /* don't program host/device for the transfer mode ("smart" hosts) */
1063 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001064 /* trust BIOS for programming chipset/device for DMA */
1065 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1066 /* host uses VDMA */
1067 IDE_HFLAG_VDMA = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001068 /* ATAPI DMA is unsupported */
1069 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001070 /* set if host is a "bootable" controller */
1071 IDE_HFLAG_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001072 /* host doesn't support DMA */
1073 IDE_HFLAG_NO_DMA = (1 << 14),
1074 /* check if host is PCI IDE device before allowing DMA */
1075 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001076 /* host is CS5510/CS5520 */
1077 IDE_HFLAG_CS5520 = (1 << 16),
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001078 /* no LBA48 */
1079 IDE_HFLAG_NO_LBA48 = (1 << 17),
1080 /* no LBA48 DMA */
1081 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001082 /* data FIFO is cleared by an error */
1083 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001084 /* serialize ports */
1085 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001086 /* use legacy IRQs */
1087 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001088 /* force use of legacy IRQs */
1089 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz272a3702007-10-20 00:32:30 +02001090 /* limit LBA48 requests to 256 sectors */
1091 IDE_HFLAG_RQSIZE_256 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001092 /* use 32-bit I/O ops */
1093 IDE_HFLAG_IO_32BIT = (1 << 24),
1094 /* unmask IRQs */
1095 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +01001096 IDE_HFLAG_ABUSE_SET_DMA_MODE = (1 << 26),
Bartlomiej Zolnierkiewicz8704de82008-01-26 20:13:00 +01001097 /* host is CY82C693 */
1098 IDE_HFLAG_CY82C693 = (1 << 27),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099};
1100
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001101#ifdef CONFIG_BLK_DEV_OFFBOARD
1102# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1103#else
1104# define IDE_HFLAG_OFF_BOARD 0
1105#endif
1106
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001107struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1110 void (*init_iops)(ide_hwif_t *);
1111 void (*init_hwif)(ide_hwif_t *);
1112 void (*init_dma)(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 ide_pci_enablebit_t enablebits[2];
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001114 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz3071a9d2008-01-25 22:17:17 +01001115 u8 extra;
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001116 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001117 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001118 u8 swdma_mask;
1119 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001120 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001121};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001123int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
1124int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125
1126void ide_map_sg(ide_drive_t *, struct request *);
1127void ide_init_sg_cmd(ide_drive_t *, struct request *);
1128
1129#define BAD_DMA_DRIVE 0
1130#define GOOD_DMA_DRIVE 1
1131
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001132struct drive_list_entry {
1133 const char *id_model;
1134 const char *id_firmware;
1135};
1136
1137int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001138
1139#ifdef CONFIG_BLK_DEV_IDEDMA
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001141int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001142
1143u8 ide_find_dma_mode(ide_drive_t *, u8);
1144
1145static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1146{
1147 return ide_find_dma_mode(drive, XFER_UDMA_6);
1148}
1149
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001150void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001151void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001152void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001153int ide_set_dma(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154ide_startstop_t ide_dma_intr(ide_drive_t *);
1155
1156#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1157extern int ide_build_sglist(ide_drive_t *, struct request *);
1158extern int ide_build_dmatable(ide_drive_t *, struct request *);
1159extern void ide_destroy_dmatable(ide_drive_t *);
1160extern int ide_release_dma(ide_hwif_t *);
1161extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
1162
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001163void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164extern int ide_dma_setup(ide_drive_t *);
1165extern void ide_dma_start(ide_drive_t *);
1166extern int __ide_dma_end(ide_drive_t *);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +02001167extern void ide_dma_lost_irq(ide_drive_t *);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +02001168extern void ide_dma_timeout(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1170
1171#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001172static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001173static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001174static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001175static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001176static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001177static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001179static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001180#endif /* CONFIG_BLK_DEV_IDEDMA */
1181
1182#ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1183static inline void ide_release_dma(ide_hwif_t *drive) {;}
1184#endif
1185
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001186#ifdef CONFIG_BLK_DEV_IDEACPI
1187extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1188extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1189extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1190extern void ide_acpi_init(ide_hwif_t *hwif);
Shaohua Li5e321322007-10-11 23:53:58 +02001191extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001192#else
1193static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1194static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1195static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1196static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001197static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001198#endif
1199
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1201extern void ide_hwif_release_regions(ide_hwif_t* hwif);
1202extern void ide_unregister (unsigned int index);
1203
1204void ide_register_region(struct gendisk *);
1205void ide_unregister_region(struct gendisk *);
1206
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001207void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208
Olof Johanssonb0d5bc22008-01-26 20:13:05 +01001209int ide_device_add_all(u8 *idx);
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +02001210int ide_device_add(u8 idx[4]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211
1212static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1213{
1214 return hwif->hwif_data;
1215}
1216
1217static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1218{
1219 hwif->hwif_data = data;
1220}
1221
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001222const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1224extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1225
Bartlomiej Zolnierkiewicz22298332007-07-20 01:11:55 +02001226static inline int ide_dev_has_iordy(struct hd_driveid *id)
1227{
1228 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1229}
1230
Sergei Shtylyov6c3c22f2007-09-11 22:28:36 +02001231static inline int ide_dev_is_sata(struct hd_driveid *id)
1232{
1233 /*
1234 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1235 * verifying that word 80 by casting it to a signed type --
1236 * this trick allows us to filter out the reserved values of
1237 * 0x0000 and 0xffff along with the earlier ATA revisions...
1238 */
1239 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1240 return 1;
1241 return 0;
1242}
1243
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001244u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245u8 ide_dump_status(ide_drive_t *, const char *, u8);
1246
1247typedef struct ide_pio_timings_s {
1248 int setup_time; /* Address setup (ns) minimum */
1249 int active_time; /* Active pulse (ns) minimum */
Sergei Shtylyov81d368e2007-03-03 17:48:53 +01001250 int cycle_time; /* Cycle time (ns) minimum = */
1251 /* active + recovery (+ setup for some chips) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252} ide_pio_timings_t;
1253
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +02001254unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001255u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256extern const ide_pio_timings_t ide_pio_timings[6];
1257
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001258int ide_set_pio_mode(ide_drive_t *, u8);
1259int ide_set_dma_mode(ide_drive_t *, u8);
1260
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001261void ide_set_pio(ide_drive_t *, u8);
1262
1263static inline void ide_set_max_pio(ide_drive_t *drive)
1264{
1265 ide_set_pio(drive, 255);
1266}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267
1268extern spinlock_t ide_lock;
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001269extern struct mutex ide_cfg_mtx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270/*
1271 * Structure locking:
1272 *
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001273 * ide_cfg_mtx and ide_lock together protect changes to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274 * ide_hwif_t->{next,hwgroup}
1275 * ide_drive_t->next
1276 *
1277 * ide_hwgroup_t->busy: ide_lock
1278 * ide_hwgroup_t->hwif: ide_lock
1279 * ide_hwif_t->mate: constant, no locking
1280 * ide_drive_t->hwif: constant, no locking
1281 */
1282
Ingo Molnar366c7f52006-07-03 00:25:25 -07001283#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
1285extern struct bus_type ide_bus_type;
1286
1287/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1288#define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1289
1290/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1291#define ide_id_has_flush_cache_ext(id) \
1292 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1293
Christoph Lameter86b37862005-08-09 19:59:21 -07001294static inline int hwif_to_node(ide_hwif_t *hwif)
1295{
1296 struct pci_dev *dev = hwif->pci_dev;
1297 return dev ? pcibus_to_node(dev->bus) : -1;
1298}
1299
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001300static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
1301{
1302 ide_hwif_t *hwif = HWIF(drive);
1303
1304 return &hwif->drives[(drive->dn ^ 1) & 1];
1305}
1306
Bartlomiej Zolnierkiewicz81ca6912008-01-26 20:13:08 +01001307static inline void ide_set_irq(ide_drive_t *drive, int on)
1308{
1309 drive->hwif->OUTB(drive->ctl | (on ? 0 : 2), IDE_CONTROL_REG);
1310}
1311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312#endif /* _IDE_H */