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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>
26#include <asm/semaphore.h>
Matthias Kaehlckef9383c42007-07-09 23:17:56 +020027#include <asm/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010029#if defined(CRIS) || defined(FRV)
30# define SUPPORT_VLB_SYNC 0
31#else
32# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#endif
34
35/*
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
37 * number.
38 */
39
40#define IDE_NO_IRQ (-1)
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042typedef unsigned char byte; /* used everywhere */
43
44/*
45 * Probably not wise to fiddle with these
46 */
47#define ERROR_MAX 8 /* Max read/write errors per sector */
48#define ERROR_RESET 3 /* Reset controller every 4th retry */
49#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
50
51/*
52 * Tune flags
53 */
54#define IDE_TUNE_NOAUTO 2
55#define IDE_TUNE_AUTO 1
56#define IDE_TUNE_DEFAULT 0
57
58/*
59 * state flags
60 */
61
62#define DMA_PIO_RETRY 1 /* retrying in PIO */
63
64#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
65#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
66
67/*
68 * Definitions for accessing IDE controller registers
69 */
70#define IDE_NR_PORTS (10)
71
72#define IDE_DATA_OFFSET (0)
73#define IDE_ERROR_OFFSET (1)
74#define IDE_NSECTOR_OFFSET (2)
75#define IDE_SECTOR_OFFSET (3)
76#define IDE_LCYL_OFFSET (4)
77#define IDE_HCYL_OFFSET (5)
78#define IDE_SELECT_OFFSET (6)
79#define IDE_STATUS_OFFSET (7)
80#define IDE_CONTROL_OFFSET (8)
81#define IDE_IRQ_OFFSET (9)
82
83#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
84#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
85
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
87#define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
88#define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
89#define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
90#define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
91#define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
92#define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
93#define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
94#define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
95#define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
96
97#define IDE_FEATURE_REG IDE_ERROR_REG
98#define IDE_COMMAND_REG IDE_STATUS_REG
99#define IDE_ALTSTATUS_REG IDE_CONTROL_REG
100#define IDE_IREASON_REG IDE_NSECTOR_REG
101#define IDE_BCOUNTL_REG IDE_LCYL_REG
102#define IDE_BCOUNTH_REG IDE_HCYL_REG
103
104#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
105#define BAD_R_STAT (BUSY_STAT | ERR_STAT)
106#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
107#define BAD_STAT (BAD_R_STAT | DRQ_STAT)
108#define DRIVE_READY (READY_STAT | SEEK_STAT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
110#define BAD_CRC (ABRT_ERR | ICRC_ERR)
111
112#define SATA_NR_PORTS (3) /* 16 possible ?? */
113
114#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118/*
119 * Our Physical Region Descriptor (PRD) table should be large enough
120 * to handle the biggest I/O request we are likely to see. Since requests
121 * can have no more than 256 sectors, and since the typical blocksize is
122 * two or more sectors, we could get by with a limit of 128 entries here for
123 * the usual worst case. Most requests seem to include some contiguous blocks,
124 * further reducing the number of table entries required.
125 *
126 * The driver reverts to PIO mode for individual requests that exceed
127 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
128 * 100% of all crazy scenarios here is not necessary.
129 *
130 * As it turns out though, we must allocate a full 4KB page for this,
131 * so the two PRD tables (ide0 & ide1) will each get half of that,
132 * allowing each to have about 256 entries (8 bytes each) from this.
133 */
134#define PRD_BYTES 8
135#define PRD_ENTRIES 256
136
137/*
138 * Some more useful definitions
139 */
140#define PARTN_BITS 6 /* number of minor dev bits for partitions */
141#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
142#define SECTOR_SIZE 512
143#define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
144#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
145
146/*
147 * Timeouts for various operations:
148 */
149#define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
150#define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
151#define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
152#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
153#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
154#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156/*
157 * Check for an interrupt and acknowledge the interrupt status
158 */
159struct hwif_s;
160typedef int (ide_ack_intr_t)(struct hwif_s *);
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162/*
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
165 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200166enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 ide_cmd640, ide_dtc2278, ide_ali14xx,
168 ide_qd65xx, ide_umc8672, ide_ht6560b,
169 ide_rz1000, ide_trm290,
170 ide_cmd646, ide_cy82c693, ide_4drives,
171 ide_pmac, ide_etrax100, ide_acorn,
Anton Salnikov7c7e92a2008-02-06 02:57:48 +0100172 ide_au1xxx, ide_palm3710, ide_forced
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200173};
174
175typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177/*
178 * Structure to hold all information about the location of this port
179 */
180typedef struct hw_regs_s {
181 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
182 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
184 hwif_chipset_t chipset;
Hannes Reinecke4349d5c2005-11-09 22:47:18 +0100185 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186} hw_regs_t;
187
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200188struct hwif_s * ide_find_port(unsigned long);
Bartlomiej Zolnierkiewicz9e016a72008-02-02 19:56:39 +0100189struct hwif_s *ide_deprecated_find_port(unsigned long);
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100190void ide_init_port_data(struct hwif_s *, unsigned int);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100191void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200192
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100193struct ide_drive_s;
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100194int ide_register_hw(hw_regs_t *, void (*)(struct ide_drive_s *),
Bartlomiej Zolnierkiewiczfd9bb532007-10-20 00:32:31 +0200195 struct hwif_s **);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197static inline void ide_std_init_ports(hw_regs_t *hw,
198 unsigned long io_addr,
199 unsigned long ctl_addr)
200{
201 unsigned int i;
202
203 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
204 hw->io_ports[i] = io_addr++;
205
206 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
207}
208
209#include <asm/ide.h>
210
Matt Mackall83d7dbc2006-10-03 01:14:16 -0700211#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
212#undef MAX_HWIFS
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100213#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
214#endif
215
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216/* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
217#ifndef IDE_ARCH_OBSOLETE_DEFAULTS
218# define ide_default_io_base(index) (0)
219# define ide_default_irq(base) (0)
220# define ide_init_default_irq(base) (0)
221#endif
222
Bartlomiej Zolnierkiewicz847ddd22007-10-20 00:32:32 +0200223#ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224static inline void ide_init_hwif_ports(hw_regs_t *hw,
225 unsigned long io_addr,
226 unsigned long ctl_addr,
227 int *irq)
228{
229 if (!ctl_addr)
230 ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr));
231 else
232 ide_std_init_ports(hw, io_addr, ctl_addr);
233
234 if (irq)
235 *irq = 0;
236
237 hw->io_ports[IDE_IRQ_OFFSET] = 0;
238
239#ifdef CONFIG_PPC32
240 if (ppc_ide_md.ide_init_hwif)
241 ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq);
242#endif
243}
244#else
245static 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 (io_addr || ctl_addr)
251 printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
252}
Bartlomiej Zolnierkiewicz847ddd22007-10-20 00:32:32 +0200253#endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255/* Currently only m68k, apus and m8xx need it */
256#ifndef IDE_ARCH_ACK_INTR
257# define ide_ack_intr(hwif) (1)
258#endif
259
260/* Currently only Atari needs it */
261#ifndef IDE_ARCH_LOCK
262# define ide_release_lock() do {} while (0)
263# define ide_get_lock(hdlr, data) do {} while (0)
264#endif /* IDE_ARCH_LOCK */
265
266/*
267 * Now for the data we need to maintain per-drive: ide_drive_t
268 */
269
270#define ide_scsi 0x21
271#define ide_disk 0x20
272#define ide_optical 0x7
273#define ide_cdrom 0x5
274#define ide_tape 0x1
275#define ide_floppy 0x0
276
277/*
278 * Special Driver Flags
279 *
280 * set_geometry : respecify drive geometry
281 * recalibrate : seek to cyl 0
282 * set_multmode : set multmode count
283 * set_tune : tune interface for drive
284 * serviced : service command
285 * reserved : unused
286 */
287typedef union {
288 unsigned all : 8;
289 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 unsigned set_geometry : 1;
291 unsigned recalibrate : 1;
292 unsigned set_multmode : 1;
293 unsigned set_tune : 1;
294 unsigned serviced : 1;
295 unsigned reserved : 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 } b;
297} special_t;
298
299/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 * ATA-IDE Select Register, aka Device-Head
301 *
302 * head : always zeros here
303 * unit : drive select number: 0/1
304 * bit5 : always 1
305 * lba : using LBA instead of CHS
306 * bit7 : always 1
307 */
308typedef union {
309 unsigned all : 8;
310 struct {
311#if defined(__LITTLE_ENDIAN_BITFIELD)
312 unsigned head : 4;
313 unsigned unit : 1;
314 unsigned bit5 : 1;
315 unsigned lba : 1;
316 unsigned bit7 : 1;
317#elif defined(__BIG_ENDIAN_BITFIELD)
318 unsigned bit7 : 1;
319 unsigned lba : 1;
320 unsigned bit5 : 1;
321 unsigned unit : 1;
322 unsigned head : 4;
323#else
324#error "Please fix <asm/byteorder.h>"
325#endif
326 } b;
327} select_t, ata_select_t;
328
329/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 * Status returned from various ide_ functions
331 */
332typedef enum {
333 ide_stopped, /* no drive operation was started */
334 ide_started, /* a drive operation was started, handler was set */
335} ide_startstop_t;
336
337struct ide_driver_s;
338struct ide_settings_s;
339
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100340#ifdef CONFIG_BLK_DEV_IDEACPI
341struct ide_acpi_drive_link;
342struct ide_acpi_hwif_link;
343#endif
344
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345typedef struct ide_drive_s {
346 char name[4]; /* drive name, such as "hda" */
347 char driver_req[10]; /* requests specific driver */
348
Jens Axboe165125e2007-07-24 09:28:11 +0200349 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
351 struct request *rq; /* current request */
352 struct ide_drive_s *next; /* circular list of hwgroup drives */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 void *driver_data; /* extra driver data */
354 struct hd_driveid *id; /* drive model identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200355#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
357 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200358#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
360
361 unsigned long sleep; /* sleep until this time */
362 unsigned long service_start; /* time we started last request */
363 unsigned long service_time; /* service time of last request */
364 unsigned long timeout; /* max time to wait for irq */
365
366 special_t special; /* special action flags */
367 select_t select; /* basic drive/head select reg value */
368
369 u8 keep_settings; /* restore settings after drive reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 u8 using_dma; /* disk is using dma for read/write */
371 u8 retry_pio; /* retrying dma capable host in pio */
372 u8 state; /* retry state */
373 u8 waiting_for_dma; /* dma currently in progress */
374 u8 unmask; /* okay to unmask other irqs */
Jens Axboe36193482006-07-28 08:54:59 +0200375 u8 noflush; /* don't attempt flushes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 u8 dsc_overlap; /* DSC overlap */
377 u8 nice1; /* give potential excess bandwidth */
378
379 unsigned present : 1; /* drive is physically present */
380 unsigned dead : 1; /* device ejected hint */
381 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
382 unsigned noprobe : 1; /* from: hdx=noprobe */
383 unsigned removable : 1; /* 1 if need to do check_media_change */
384 unsigned attach : 1; /* needed for removable devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
386 unsigned no_unmask : 1; /* disallow setting unmask bit */
387 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
388 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +0200390 unsigned nodma : 1; /* disallow DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
392 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
393 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
394 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
396 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
397 unsigned post_reset : 1;
Bartlomiej Zolnierkiewicz7f8f48a2007-05-10 00:01:10 +0200398 unsigned udma33_warned : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200400 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 u8 quirk_list; /* considered quirky, set for a specific host */
402 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200404 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 u8 dn; /* now wide spread use */
406 u8 wcache; /* status of write cache */
407 u8 acoustic; /* acoustic management */
408 u8 media; /* disk, cdrom, tape, floppy, ... */
409 u8 ctl; /* "normal" value for IDE_CONTROL_REG */
410 u8 ready_stat; /* min status value for drive ready */
411 u8 mult_count; /* current multiple sector setting */
412 u8 mult_req; /* requested multiple sector setting */
413 u8 tune_req; /* requested drive tuning setting */
414 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
415 u8 bad_wstat; /* used for ignoring WRERR_STAT */
416 u8 nowerr; /* used for ignoring WRERR_STAT */
417 u8 sect0; /* offset of first sector for DM6:DDO */
418 u8 head; /* "real" number of heads */
419 u8 sect; /* "real" sectors per track */
420 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
421 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
422
423 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
424 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200425 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 unsigned int failures; /* current failure count */
427 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700428 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
430 u64 capacity64; /* total number of sectors */
431
432 int lun; /* logical unit */
433 int crc_count; /* crc counter to reduce drive speed */
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100434#ifdef CONFIG_BLK_DEV_IDEACPI
435 struct ide_acpi_drive_link *acpidata;
436#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 struct list_head list;
438 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800439 struct completion gendev_rel_comp; /* to deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440} ide_drive_t;
441
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200442#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
443
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444#define IDE_CHIPSET_PCI_MASK \
445 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
446#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
447
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200448struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
450typedef struct hwif_s {
451 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
452 struct hwif_s *mate; /* other hwif from same PCI chip */
453 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
454 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
455
456 char name[6]; /* name of interface, eg. "ide0" */
457
458 /* task file registers for pata and sata */
459 unsigned long io_ports[IDE_NR_PORTS];
460 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 ide_drive_t drives[MAX_DRIVES]; /* drive info */
463
464 u8 major; /* our major number */
465 u8 index; /* 0 for ide0; 1 for ide1; ... */
466 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 u8 bus_state; /* power state of the IDE bus */
468
David Millere95d9c62007-10-22 02:09:00 -0700469 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200470
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200471 u8 pio_mask;
472
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 u8 ultra_mask;
474 u8 mwdma_mask;
475 u8 swdma_mask;
476
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200477 u8 cbl; /* cable type */
478
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 hwif_chipset_t chipset; /* sub-module for tuning.. */
480
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100481 struct device *dev;
482
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200483 const struct ide_port_info *cds; /* chipset device struct */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200485 ide_ack_intr_t *ack_intr;
486
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 void (*rw_disk)(ide_drive_t *, struct request *);
488
489#if 0
490 ide_hwif_ops_t *hwifops;
491#else
Bartlomiej Zolnierkiewicz1f2cf8b2008-02-02 19:56:40 +0100492 /* host specific initialization of devices on a port */
493 void (*port_init_devs)(struct hwif_s *);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200494 /* routine to program host for PIO mode */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200495 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200496 /* routine to program host for DMA mode */
497 void (*set_dma_mode)(ide_drive_t *, const u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 /* tweaks hardware to select drive */
499 void (*selectproc)(ide_drive_t *);
500 /* chipset polling based on hba specifics */
501 int (*reset_poll)(ide_drive_t *);
502 /* chipset specific changes to default for device-hba resets */
503 void (*pre_reset)(ide_drive_t *);
504 /* routine to reset controller after a disk reset */
505 void (*resetproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 /* special host masking for drive selection */
507 void (*maskproc)(ide_drive_t *, int);
508 /* check host's drive quirk list */
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100509 void (*quirkproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 /* driver soft-power interface */
511 int (*busproc)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512#endif
Sergei Shtylyovb4e44362007-10-11 23:53:58 +0200513 u8 (*mdma_filter)(ide_drive_t *);
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +0200514 u8 (*udma_filter)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100516 u8 (*cable_detect)(struct hwif_s *);
517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 void (*ata_input_data)(ide_drive_t *, void *, u32);
519 void (*ata_output_data)(ide_drive_t *, void *, u32);
520
521 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
522 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
523
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100524 void (*dma_host_set)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 int (*dma_setup)(ide_drive_t *);
526 void (*dma_exec_cmd)(ide_drive_t *, u8);
527 void (*dma_start)(ide_drive_t *);
528 int (*ide_dma_end)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 int (*ide_dma_test_irq)(ide_drive_t *drive);
Albert Leef0dd8712007-02-17 02:40:21 +0100530 void (*ide_dma_clear_irq)(ide_drive_t *drive);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200531 void (*dma_lost_irq)(ide_drive_t *drive);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200532 void (*dma_timeout)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
534 void (*OUTB)(u8 addr, unsigned long port);
535 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
536 void (*OUTW)(u16 addr, unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 void (*OUTSW)(unsigned long port, void *addr, u32 count);
538 void (*OUTSL)(unsigned long port, void *addr, u32 count);
539
540 u8 (*INB)(unsigned long port);
541 u16 (*INW)(unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 void (*INSW)(unsigned long port, void *addr, u32 count);
543 void (*INSL)(unsigned long port, void *addr, u32 count);
544
545 /* dma physical region descriptor table (cpu view) */
546 unsigned int *dmatable_cpu;
547 /* dma physical region descriptor table (dma view) */
548 dma_addr_t dmatable_dma;
549 /* Scatter-gather list used to build the above */
550 struct scatterlist *sg_table;
551 int sg_max_nents; /* Maximum number of entries in it */
552 int sg_nents; /* Current number of entries in it */
553 int sg_dma_direction; /* dma transfer direction */
554
555 /* data phase of the active command (currently only valid for PIO/DMA) */
556 int data_phase;
557
558 unsigned int nsect;
559 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200560 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 unsigned int cursg_ofs;
562
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 int rqsize; /* max sectors per request */
564 int irq; /* our irq number */
565
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 unsigned long dma_base; /* base addr for dma ports */
567 unsigned long dma_command; /* dma command register */
568 unsigned long dma_vendor1; /* dma vendor 1 register */
569 unsigned long dma_status; /* dma status register */
570 unsigned long dma_vendor3; /* dma vendor 3 register */
571 unsigned long dma_prdtable; /* actual prd table address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 unsigned long config_data; /* for use by chipset-specific code */
574 unsigned long select_data; /* for use by chipset-specific code */
575
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700576 unsigned long extra_base; /* extra addr for dma ports */
577 unsigned extra_ports; /* number of extra dma ports */
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 unsigned noprobe : 1; /* don't probe for this interface */
580 unsigned present : 1; /* this interface exists */
581 unsigned hold : 1; /* this interface is always present */
582 unsigned serialized : 1; /* serialized all channel operation */
583 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
584 unsigned reset : 1; /* reset after probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100586 unsigned mmio : 1; /* host uses MMIO */
Bartlomiej Zolnierkiewiczb0343042008-02-02 19:56:45 +0100587 unsigned straight8 : 1; /* Alan's straight 8 check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
589 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800590 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591
592 void *hwif_data; /* extra hwif data */
593
594 unsigned dma;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100595
596#ifdef CONFIG_BLK_DEV_IDEACPI
597 struct ide_acpi_hwif_link *acpidata;
598#endif
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800599} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
601/*
602 * internal ide interrupt handler type
603 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
605typedef int (ide_expiry_t)(ide_drive_t *);
606
Borislav Petkov0eea6452008-02-02 19:56:36 +0100607/* used by ide-cd, ide-floppy, etc. */
608typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
609
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610typedef struct hwgroup_s {
611 /* irq handler, if active */
612 ide_startstop_t (*handler)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100613
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 /* BOOL: protects all fields below */
615 volatile int busy;
616 /* BOOL: wake us up on timer expiry */
617 unsigned int sleeping : 1;
618 /* BOOL: polling active & poll_timeout field valid */
619 unsigned int polling : 1;
Alan Cox913759a2006-10-03 01:14:33 -0700620 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
621 unsigned int resetting : 1;
622
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 /* current drive */
624 ide_drive_t *drive;
625 /* ptr to current hwif in linked-list */
626 ide_hwif_t *hwif;
627
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 /* current request */
629 struct request *rq;
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100630
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 /* failsafe timer */
632 struct timer_list timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 /* timeout value during long polls */
634 unsigned long poll_timeout;
635 /* queried upon timeouts */
636 int (*expiry)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100637
Suleiman Souhlal23450312007-04-10 22:38:37 +0200638 int req_gen;
639 int req_gen_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640} ide_hwgroup_t;
641
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200642typedef struct ide_driver_s ide_driver_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200644extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200645
646int set_io_32bit(ide_drive_t *, int);
647int set_pio_mode(ide_drive_t *, int);
648int set_using_dma(ide_drive_t *, int);
649
650#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651/*
652 * configurable drive settings
653 */
654
655#define TYPE_INT 0
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200656#define TYPE_BYTE 1
657#define TYPE_SHORT 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
659#define SETTING_READ (1 << 0)
660#define SETTING_WRITE (1 << 1)
661#define SETTING_RW (SETTING_READ | SETTING_WRITE)
662
663typedef int (ide_procset_t)(ide_drive_t *, int);
664typedef struct ide_settings_s {
665 char *name;
666 int rw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 int data_type;
668 int min;
669 int max;
670 int mul_factor;
671 int div_factor;
672 void *data;
673 ide_procset_t *set;
674 int auto_remove;
675 struct ide_settings_s *next;
676} ide_settings_t;
677
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200678int 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 -0700679
680/*
681 * /proc/ide interface
682 */
683typedef struct {
684 const char *name;
685 mode_t mode;
686 read_proc_t *read_proc;
687 write_proc_t *write_proc;
688} ide_proc_entry_t;
689
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200690void proc_ide_create(void);
691void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200692void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100693void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200694void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200695void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
696void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
697
698void ide_add_generic_settings(ide_drive_t *);
699
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700read_proc_t proc_ide_read_capacity;
701read_proc_t proc_ide_read_geometry;
702
703#ifdef CONFIG_BLK_DEV_IDEPCI
704void ide_pci_create_host_proc(const char *, get_info_t *);
705#endif
706
707/*
708 * Standard exit stuff:
709 */
710#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
711{ \
712 len -= off; \
713 if (len < count) { \
714 *eof = 1; \
715 if (len <= 0) \
716 return 0; \
717 } else \
718 len = count; \
719 *start = page + off; \
720 return len; \
721}
722#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200723static inline void proc_ide_create(void) { ; }
724static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200725static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100726static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200727static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200728static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
729static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
730static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
732#endif
733
734/*
735 * Power Management step value (rq->pm->pm_step).
736 *
737 * The step value starts at 0 (ide_pm_state_start_suspend) for a
738 * suspend operation or 1000 (ide_pm_state_start_resume) for a
739 * resume operation.
740 *
741 * For each step, the core calls the subdriver start_power_step() first.
742 * This can return:
743 * - ide_stopped : In this case, the core calls us back again unless
744 * step have been set to ide_power_state_completed.
745 * - ide_started : In this case, the channel is left busy until an
746 * async event (interrupt) occurs.
747 * Typically, start_power_step() will issue a taskfile request with
748 * do_rw_taskfile().
749 *
750 * Upon reception of the interrupt, the core will call complete_power_step()
751 * with the error code if any. This routine should update the step value
752 * and return. It should not start a new request. The core will call
753 * start_power_step for the new step value, unless step have been set to
754 * ide_power_state_completed.
755 *
756 * Subdrivers are expected to define their own additional power
757 * steps from 1..999 for suspend and from 1001..1999 for resume,
758 * other values are reserved for future use.
759 */
760
761enum {
762 ide_pm_state_completed = -1,
763 ide_pm_state_start_suspend = 0,
764 ide_pm_state_start_resume = 1000,
765};
766
767/*
768 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +0100769 *
770 * The gendriver.owner field should be set to the module owner of this driver.
771 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200773struct ide_driver_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 const char *version;
775 u8 media;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 unsigned supports_dsc_overlap : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
778 int (*end_request)(ide_drive_t *, int, int);
779 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
780 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +0000782 int (*probe)(ide_drive_t *);
783 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +0200784 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +0000785 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200786#ifdef CONFIG_IDE_PROC_FS
787 ide_proc_entry_t *proc;
788#endif
789};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790
Russell King4031bbe2006-01-06 11:41:00 +0000791#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
792
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
794
795/*
796 * ide_hwifs[] is the master data structure used to keep track
797 * of just about everything in ide.c. Whenever possible, routines
798 * should be using pointers to a drive (ide_drive_t *) or
799 * pointers to a hwif (ide_hwif_t *), rather than indexing this
800 * structure directly (the allocation/layout may change!).
801 *
802 */
803#ifndef _IDE_C
804extern ide_hwif_t ide_hwifs[]; /* master data repository */
805#endif
806extern int noautodma;
807
808extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -0700809int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
810 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
813
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +0100814void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
815 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
817ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
820
821ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
824
825extern void ide_fix_driveid(struct hd_driveid *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +0100826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827extern void ide_fixstring(u8 *, const int, const int);
828
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +0200829int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831extern ide_startstop_t ide_do_reset (ide_drive_t *);
832
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833extern void ide_init_drive_cmd (struct request *rq);
834
835/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 * "action" parameter type for ide_do_drive_cmd() below.
837 */
838typedef enum {
839 ide_wait, /* insert rq at end of list, and wait for it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 ide_preempt, /* insert rq in front of current request */
841 ide_head_wait, /* insert rq in front of current request and wait for it */
842 ide_end /* insert rq at end of list, but don't wait for it */
843} ide_action_t;
844
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
848
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100849enum {
850 IDE_TFLAG_LBA48 = (1 << 0),
851 IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100852 IDE_TFLAG_FLAGGED = (1 << 2),
853 IDE_TFLAG_OUT_DATA = (1 << 3),
854 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
855 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
856 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
857 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
858 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
859 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
860 IDE_TFLAG_OUT_HOB_NSECT |
861 IDE_TFLAG_OUT_HOB_LBAL |
862 IDE_TFLAG_OUT_HOB_LBAM |
863 IDE_TFLAG_OUT_HOB_LBAH,
864 IDE_TFLAG_OUT_FEATURE = (1 << 9),
865 IDE_TFLAG_OUT_NSECT = (1 << 10),
866 IDE_TFLAG_OUT_LBAL = (1 << 11),
867 IDE_TFLAG_OUT_LBAM = (1 << 12),
868 IDE_TFLAG_OUT_LBAH = (1 << 13),
869 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
870 IDE_TFLAG_OUT_NSECT |
871 IDE_TFLAG_OUT_LBAL |
872 IDE_TFLAG_OUT_LBAM |
873 IDE_TFLAG_OUT_LBAH,
Bartlomiej Zolnierkiewicz807e35d2008-01-25 22:17:10 +0100874 IDE_TFLAG_OUT_DEVICE = (1 << 14),
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100875 IDE_TFLAG_WRITE = (1 << 15),
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100876 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
877 IDE_TFLAG_IN_DATA = (1 << 17),
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +0100878 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100879 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100880 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
881 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
882 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
883 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
884 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
885 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
886 IDE_TFLAG_IN_HOB_LBAM |
887 IDE_TFLAG_IN_HOB_LBAH,
888 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
889 IDE_TFLAG_IN_HOB_NSECT |
890 IDE_TFLAG_IN_HOB_LBA,
891 IDE_TFLAG_IN_NSECT = (1 << 25),
892 IDE_TFLAG_IN_LBAL = (1 << 26),
893 IDE_TFLAG_IN_LBAM = (1 << 27),
894 IDE_TFLAG_IN_LBAH = (1 << 28),
895 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
896 IDE_TFLAG_IN_LBAM |
897 IDE_TFLAG_IN_LBAH,
898 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
899 IDE_TFLAG_IN_LBA,
900 IDE_TFLAG_IN_DEVICE = (1 << 29),
Bartlomiej Zolnierkiewicz657cc1a2008-01-26 20:13:10 +0100901 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
902 IDE_TFLAG_IN_HOB,
903 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
904 IDE_TFLAG_IN_TF,
905 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
906 IDE_TFLAG_IN_DEVICE,
Tejun Heo35cf2b92008-01-26 20:13:10 +0100907 /* force 16-bit I/O operations */
908 IDE_TFLAG_IO_16BIT = (1 << 30),
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100909};
910
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100911struct ide_taskfile {
912 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
913
914 u8 hob_feature; /* 1-5: additional data to support LBA48 */
915 u8 hob_nsect;
916 u8 hob_lbal;
917 u8 hob_lbam;
918 u8 hob_lbah;
919
920 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
921
922 union { /*  7: */
923 u8 error; /* read: error */
924 u8 feature; /* write: feature */
925 };
926
927 u8 nsect; /* 8: number of sectors */
928 u8 lbal; /* 9: LBA low */
929 u8 lbam; /* 10: LBA mid */
930 u8 lbah; /* 11: LBA high */
931
932 u8 device; /* 12: device select */
933
934 union { /* 13: */
935 u8 status; /*  read: status  */
936 u8 command; /* write: command */
937 };
938};
939
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940typedef struct ide_task_s {
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100941 union {
942 struct ide_taskfile tf;
943 u8 tf_array[14];
944 };
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100945 u32 tf_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 int data_phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947 struct request *rq; /* copy of request */
948 void *special; /* valid_t generally */
949} ide_task_t;
950
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100951void ide_tf_load(ide_drive_t *, ide_task_t *);
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100952void ide_tf_read(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953
954extern void SELECT_DRIVE(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955extern void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
957extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +0100959void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
960
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100961ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
Tejun Heo4d7a9842008-01-26 20:13:11 +0100963void task_end_request(ide_drive_t *, struct request *, u8);
964
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100965int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100966int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
967
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
969int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
970int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
971
972extern int system_bus_clock(void);
973
974extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975extern int ide_config_drive_speed(ide_drive_t *, u8);
976extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
978
979extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
980
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
982
983extern int ide_spin_wait_hwgroup(ide_drive_t *);
984extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +0100985extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +0200986extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987
988void ide_init_disk(struct gendisk *, ide_drive_t *);
989
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +0200990#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100991extern int ide_scan_direction;
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -0800992extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
993#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +0200994#else
995#define ide_pci_register_driver(d) pci_register_driver(d)
996#endif
997
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200998void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
999void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
Anton Salnikov7c7e92a2008-02-06 02:57:48 +01001001/* FIXME: palm_bk3710 uses BLK_DEV_IDEDMA_PCI without BLK_DEV_IDEPCI! */
1002#if defined(CONFIG_BLK_DEV_IDEPCI) && defined(CONFIG_BLK_DEV_IDEDMA_PCI)
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001003void ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1004#else
1005static inline void ide_hwif_setup_dma(ide_hwif_t *hwif,
1006 const struct ide_port_info *d) { }
1007#endif
1008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009extern void default_hwif_iops(ide_hwif_t *);
1010extern void default_hwif_mmiops(ide_hwif_t *);
1011extern void default_hwif_transport(ide_hwif_t *);
1012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013typedef struct ide_pci_enablebit_s {
1014 u8 reg; /* byte pci reg holding the enable-bit */
1015 u8 mask; /* mask to isolate the enable-bit */
1016 u8 val; /* value of masked reg when "enabled" */
1017} ide_pci_enablebit_t;
1018
1019enum {
1020 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001021 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001022 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001023 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001024 /* don't use legacy PIO blacklist */
1025 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1026 /* don't use conservative PIO "downgrade" */
1027 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001028 /* use PIO8/9 for prefetch off/on */
1029 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1030 /* use PIO6/7 for fast-devsel off/on */
1031 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1032 /* use 100-102 and 200-202 PIO values to set DMA modes */
1033 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001034 /*
1035 * keep DMA setting when programming PIO mode, may be used only
1036 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1037 */
1038 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001039 /* program host for the transfer mode after programming device */
1040 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1041 /* don't program host/device for the transfer mode ("smart" hosts) */
1042 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001043 /* trust BIOS for programming chipset/device for DMA */
1044 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001045 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001046 IDE_HFLAG_VDMA = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001047 /* ATAPI DMA is unsupported */
1048 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001049 /* set if host is a "bootable" controller */
1050 IDE_HFLAG_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001051 /* host doesn't support DMA */
1052 IDE_HFLAG_NO_DMA = (1 << 14),
1053 /* check if host is PCI IDE device before allowing DMA */
1054 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001055 /* don't autotune PIO */
1056 IDE_HFLAG_NO_AUTOTUNE = (1 << 16),
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001057 /* host is CS5510/CS5520 */
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001058 IDE_HFLAG_CS5520 = IDE_HFLAG_VDMA,
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001059 /* no LBA48 */
1060 IDE_HFLAG_NO_LBA48 = (1 << 17),
1061 /* no LBA48 DMA */
1062 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001063 /* data FIFO is cleared by an error */
1064 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001065 /* serialize ports */
1066 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001067 /* use legacy IRQs */
1068 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001069 /* force use of legacy IRQs */
1070 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz272a3702007-10-20 00:32:30 +02001071 /* limit LBA48 requests to 256 sectors */
1072 IDE_HFLAG_RQSIZE_256 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001073 /* use 32-bit I/O ops */
1074 IDE_HFLAG_IO_32BIT = (1 << 24),
1075 /* unmask IRQs */
1076 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +01001077 IDE_HFLAG_ABUSE_SET_DMA_MODE = (1 << 26),
Bartlomiej Zolnierkiewicz8704de82008-01-26 20:13:00 +01001078 /* host is CY82C693 */
1079 IDE_HFLAG_CY82C693 = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001080 /* force host out of "simplex" mode */
1081 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001082 /* DSC overlap is unsupported */
1083 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001084 /* never use 32-bit I/O ops */
1085 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1086 /* never unmask IRQs */
1087 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088};
1089
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001090#ifdef CONFIG_BLK_DEV_OFFBOARD
1091# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1092#else
1093# define IDE_HFLAG_OFF_BOARD 0
1094#endif
1095
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001096struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1099 void (*init_iops)(ide_hwif_t *);
1100 void (*init_hwif)(ide_hwif_t *);
1101 void (*init_dma)(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 ide_pci_enablebit_t enablebits[2];
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001103 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz3071a9d2008-01-25 22:17:17 +01001104 u8 extra;
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001105 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001106 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001107 u8 swdma_mask;
1108 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001109 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001110};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001112int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
1113int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114
1115void ide_map_sg(ide_drive_t *, struct request *);
1116void ide_init_sg_cmd(ide_drive_t *, struct request *);
1117
1118#define BAD_DMA_DRIVE 0
1119#define GOOD_DMA_DRIVE 1
1120
Jordan Crouse65e5f2e2005-12-15 02:16:18 +01001121struct drive_list_entry {
1122 const char *id_model;
1123 const char *id_firmware;
1124};
1125
1126int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001127
1128#ifdef CONFIG_BLK_DEV_IDEDMA
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001130int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001131
1132u8 ide_find_dma_mode(ide_drive_t *, u8);
1133
1134static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1135{
1136 return ide_find_dma_mode(drive, XFER_UDMA_6);
1137}
1138
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001139void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001140void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001141void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001142int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001143void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144ide_startstop_t ide_dma_intr(ide_drive_t *);
1145
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001146int ide_build_sglist(ide_drive_t *, struct request *);
1147void ide_destroy_dmatable(ide_drive_t *);
1148
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150extern int ide_build_dmatable(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151extern int ide_release_dma(ide_hwif_t *);
Sergei Shtylyovecf327962008-02-01 23:09:30 +01001152extern void ide_setup_dma(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001154void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155extern int ide_dma_setup(ide_drive_t *);
1156extern void ide_dma_start(ide_drive_t *);
1157extern int __ide_dma_end(ide_drive_t *);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +02001158extern void ide_dma_lost_irq(ide_drive_t *);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +02001159extern void ide_dma_timeout(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1161
1162#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001163static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df72007-10-11 23:53:59 +02001164static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001165static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001166static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001167static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001168static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001170static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001171static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172#endif /* CONFIG_BLK_DEV_IDEDMA */
1173
1174#ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1175static inline void ide_release_dma(ide_hwif_t *drive) {;}
1176#endif
1177
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001178#ifdef CONFIG_BLK_DEV_IDEACPI
1179extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1180extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1181extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1182extern void ide_acpi_init(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001183void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001184extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001185#else
1186static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1187static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1188static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1189static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001190static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001191static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001192#endif
1193
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +01001194void ide_remove_port_from_hwgroup(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1196extern void ide_hwif_release_regions(ide_hwif_t* hwif);
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +01001197void ide_unregister(unsigned int, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198
1199void ide_register_region(struct gendisk *);
1200void ide_unregister_region(struct gendisk *);
1201
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001202void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001204int ide_device_add_all(u8 *idx, const struct ide_port_info *);
1205int ide_device_add(u8 idx[4], const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206
1207static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1208{
1209 return hwif->hwif_data;
1210}
1211
1212static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1213{
1214 hwif->hwif_data = data;
1215}
1216
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001217const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1219extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1220
Bartlomiej Zolnierkiewicz22298332007-07-20 01:11:55 +02001221static inline int ide_dev_has_iordy(struct hd_driveid *id)
1222{
1223 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1224}
1225
Sergei Shtylyov6c3c22f2007-09-11 22:28:36 +02001226static inline int ide_dev_is_sata(struct hd_driveid *id)
1227{
1228 /*
1229 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1230 * verifying that word 80 by casting it to a signed type --
1231 * this trick allows us to filter out the reserved values of
1232 * 0x0000 and 0xffff along with the earlier ATA revisions...
1233 */
1234 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1235 return 1;
1236 return 0;
1237}
1238
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001239u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240u8 ide_dump_status(ide_drive_t *, const char *, u8);
1241
1242typedef struct ide_pio_timings_s {
1243 int setup_time; /* Address setup (ns) minimum */
1244 int active_time; /* Active pulse (ns) minimum */
Sergei Shtylyov81d368e2007-03-03 17:48:53 +01001245 int cycle_time; /* Cycle time (ns) minimum = */
1246 /* active + recovery (+ setup for some chips) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247} ide_pio_timings_t;
1248
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +02001249unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001250u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251extern const ide_pio_timings_t ide_pio_timings[6];
1252
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001253int ide_set_pio_mode(ide_drive_t *, u8);
1254int ide_set_dma_mode(ide_drive_t *, u8);
1255
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001256void ide_set_pio(ide_drive_t *, u8);
1257
1258static inline void ide_set_max_pio(ide_drive_t *drive)
1259{
1260 ide_set_pio(drive, 255);
1261}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262
1263extern spinlock_t ide_lock;
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001264extern struct mutex ide_cfg_mtx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265/*
1266 * Structure locking:
1267 *
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001268 * ide_cfg_mtx and ide_lock together protect changes to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 * ide_hwif_t->{next,hwgroup}
1270 * ide_drive_t->next
1271 *
1272 * ide_hwgroup_t->busy: ide_lock
1273 * ide_hwgroup_t->hwif: ide_lock
1274 * ide_hwif_t->mate: constant, no locking
1275 * ide_drive_t->hwif: constant, no locking
1276 */
1277
Ingo Molnar366c7f52006-07-03 00:25:25 -07001278#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279
1280extern struct bus_type ide_bus_type;
1281
1282/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1283#define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1284
1285/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1286#define ide_id_has_flush_cache_ext(id) \
1287 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1288
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001289static inline void ide_dump_identify(u8 *id)
1290{
1291 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1292}
1293
Christoph Lameter86b37862005-08-09 19:59:21 -07001294static inline int hwif_to_node(ide_hwif_t *hwif)
1295{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +01001296 struct pci_dev *dev = to_pci_dev(hwif->dev);
Christoph Lameter86b37862005-08-09 19:59:21 -07001297 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
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +01001312static inline u8 ide_read_status(ide_drive_t *drive)
1313{
1314 ide_hwif_t *hwif = drive->hwif;
1315
1316 return hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
1317}
1318
1319static inline u8 ide_read_altstatus(ide_drive_t *drive)
1320{
1321 ide_hwif_t *hwif = drive->hwif;
1322
1323 return hwif->INB(hwif->io_ports[IDE_CONTROL_OFFSET]);
1324}
1325
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +01001326static inline u8 ide_read_error(ide_drive_t *drive)
1327{
1328 ide_hwif_t *hwif = drive->hwif;
1329
1330 return hwif->INB(hwif->io_ports[IDE_ERROR_OFFSET]);
1331}
1332
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333#endif /* _IDE_H */