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ide: remove 'command_type' field from ide_task_t
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / ide.h
1 #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
9 #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>
20 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
23 #endif
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
26 #include <asm/io.h>
27 #include <asm/semaphore.h>
28 #include <asm/mutex.h>
29
30 #if defined(CRIS) || defined(FRV)
31 # define SUPPORT_VLB_SYNC 0
32 #else
33 # define SUPPORT_VLB_SYNC 1
34 #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
43 typedef 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
87 #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)
110 #define DATA_READY (DRQ_STAT)
111
112 #define BAD_CRC (ABRT_ERR | ICRC_ERR)
113
114 #define SATA_NR_PORTS (3) /* 16 possible ?? */
115
116 #define SATA_STATUS_OFFSET (0)
117 #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET])
118 #define SATA_ERROR_OFFSET (1)
119 #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET])
120 #define SATA_CONTROL_OFFSET (2)
121 #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET])
122
123 #define SATA_MISC_OFFSET (0)
124 #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET])
125 #define SATA_PHY_OFFSET (1)
126 #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET])
127 #define SATA_IEN_OFFSET (2)
128 #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET])
129
130 /*
131 * Our Physical Region Descriptor (PRD) table should be large enough
132 * to handle the biggest I/O request we are likely to see. Since requests
133 * can have no more than 256 sectors, and since the typical blocksize is
134 * two or more sectors, we could get by with a limit of 128 entries here for
135 * the usual worst case. Most requests seem to include some contiguous blocks,
136 * further reducing the number of table entries required.
137 *
138 * The driver reverts to PIO mode for individual requests that exceed
139 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
140 * 100% of all crazy scenarios here is not necessary.
141 *
142 * As it turns out though, we must allocate a full 4KB page for this,
143 * so the two PRD tables (ide0 & ide1) will each get half of that,
144 * allowing each to have about 256 entries (8 bytes each) from this.
145 */
146 #define PRD_BYTES 8
147 #define PRD_ENTRIES 256
148
149 /*
150 * Some more useful definitions
151 */
152 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
153 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
154 #define SECTOR_SIZE 512
155 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
156 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
157
158 /*
159 * Timeouts for various operations:
160 */
161 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
162 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
163 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
164 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
165 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
166 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
167
168 /*
169 * Check for an interrupt and acknowledge the interrupt status
170 */
171 struct hwif_s;
172 typedef int (ide_ack_intr_t)(struct hwif_s *);
173
174 /*
175 * hwif_chipset_t is used to keep track of the specific hardware
176 * chipset used by each IDE interface, if known.
177 */
178 enum { ide_unknown, ide_generic, ide_pci,
179 ide_cmd640, ide_dtc2278, ide_ali14xx,
180 ide_qd65xx, ide_umc8672, ide_ht6560b,
181 ide_rz1000, ide_trm290,
182 ide_cmd646, ide_cy82c693, ide_4drives,
183 ide_pmac, ide_etrax100, ide_acorn,
184 ide_au1xxx, ide_forced
185 };
186
187 typedef u8 hwif_chipset_t;
188
189 /*
190 * Structure to hold all information about the location of this port
191 */
192 typedef struct hw_regs_s {
193 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
194 int irq; /* our irq number */
195 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
196 hwif_chipset_t chipset;
197 struct device *dev;
198 } hw_regs_t;
199
200 struct hwif_s * ide_find_port(unsigned long);
201
202 int ide_register_hw(hw_regs_t *, void (*)(struct hwif_s *), int,
203 struct hwif_s **);
204
205 void ide_setup_ports( hw_regs_t *hw,
206 unsigned long base,
207 int *offsets,
208 unsigned long ctrl,
209 unsigned long intr,
210 ide_ack_intr_t *ack_intr,
211 #if 0
212 ide_io_ops_t *iops,
213 #endif
214 int irq);
215
216 static inline void ide_std_init_ports(hw_regs_t *hw,
217 unsigned long io_addr,
218 unsigned long ctl_addr)
219 {
220 unsigned int i;
221
222 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
223 hw->io_ports[i] = io_addr++;
224
225 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
226 }
227
228 #include <asm/ide.h>
229
230 #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
231 #undef MAX_HWIFS
232 #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
233 #endif
234
235 /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
236 #ifndef IDE_ARCH_OBSOLETE_DEFAULTS
237 # define ide_default_io_base(index) (0)
238 # define ide_default_irq(base) (0)
239 # define ide_init_default_irq(base) (0)
240 #endif
241
242 #ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT
243 static inline void ide_init_hwif_ports(hw_regs_t *hw,
244 unsigned long io_addr,
245 unsigned long ctl_addr,
246 int *irq)
247 {
248 if (!ctl_addr)
249 ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr));
250 else
251 ide_std_init_ports(hw, io_addr, ctl_addr);
252
253 if (irq)
254 *irq = 0;
255
256 hw->io_ports[IDE_IRQ_OFFSET] = 0;
257
258 #ifdef CONFIG_PPC32
259 if (ppc_ide_md.ide_init_hwif)
260 ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq);
261 #endif
262 }
263 #else
264 static inline void ide_init_hwif_ports(hw_regs_t *hw,
265 unsigned long io_addr,
266 unsigned long ctl_addr,
267 int *irq)
268 {
269 if (io_addr || ctl_addr)
270 printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__);
271 }
272 #endif /* CONFIG_IDE_ARCH_OBSOLETE_INIT */
273
274 /* Currently only m68k, apus and m8xx need it */
275 #ifndef IDE_ARCH_ACK_INTR
276 # define ide_ack_intr(hwif) (1)
277 #endif
278
279 /* Currently only Atari needs it */
280 #ifndef IDE_ARCH_LOCK
281 # define ide_release_lock() do {} while (0)
282 # define ide_get_lock(hdlr, data) do {} while (0)
283 #endif /* IDE_ARCH_LOCK */
284
285 /*
286 * Now for the data we need to maintain per-drive: ide_drive_t
287 */
288
289 #define ide_scsi 0x21
290 #define ide_disk 0x20
291 #define ide_optical 0x7
292 #define ide_cdrom 0x5
293 #define ide_tape 0x1
294 #define ide_floppy 0x0
295
296 /*
297 * Special Driver Flags
298 *
299 * set_geometry : respecify drive geometry
300 * recalibrate : seek to cyl 0
301 * set_multmode : set multmode count
302 * set_tune : tune interface for drive
303 * serviced : service command
304 * reserved : unused
305 */
306 typedef union {
307 unsigned all : 8;
308 struct {
309 unsigned set_geometry : 1;
310 unsigned recalibrate : 1;
311 unsigned set_multmode : 1;
312 unsigned set_tune : 1;
313 unsigned serviced : 1;
314 unsigned reserved : 3;
315 } b;
316 } special_t;
317
318 /*
319 * ATA-IDE Select Register, aka Device-Head
320 *
321 * head : always zeros here
322 * unit : drive select number: 0/1
323 * bit5 : always 1
324 * lba : using LBA instead of CHS
325 * bit7 : always 1
326 */
327 typedef union {
328 unsigned all : 8;
329 struct {
330 #if defined(__LITTLE_ENDIAN_BITFIELD)
331 unsigned head : 4;
332 unsigned unit : 1;
333 unsigned bit5 : 1;
334 unsigned lba : 1;
335 unsigned bit7 : 1;
336 #elif defined(__BIG_ENDIAN_BITFIELD)
337 unsigned bit7 : 1;
338 unsigned lba : 1;
339 unsigned bit5 : 1;
340 unsigned unit : 1;
341 unsigned head : 4;
342 #else
343 #error "Please fix <asm/byteorder.h>"
344 #endif
345 } b;
346 } select_t, ata_select_t;
347
348 /*
349 * Status returned from various ide_ functions
350 */
351 typedef enum {
352 ide_stopped, /* no drive operation was started */
353 ide_started, /* a drive operation was started, handler was set */
354 } ide_startstop_t;
355
356 struct ide_driver_s;
357 struct ide_settings_s;
358
359 #ifdef CONFIG_BLK_DEV_IDEACPI
360 struct ide_acpi_drive_link;
361 struct ide_acpi_hwif_link;
362 #endif
363
364 typedef struct ide_drive_s {
365 char name[4]; /* drive name, such as "hda" */
366 char driver_req[10]; /* requests specific driver */
367
368 struct request_queue *queue; /* request queue */
369
370 struct request *rq; /* current request */
371 struct ide_drive_s *next; /* circular list of hwgroup drives */
372 void *driver_data; /* extra driver data */
373 struct hd_driveid *id; /* drive model identification info */
374 #ifdef CONFIG_IDE_PROC_FS
375 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
376 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
377 #endif
378 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
379
380 unsigned long sleep; /* sleep until this time */
381 unsigned long service_start; /* time we started last request */
382 unsigned long service_time; /* service time of last request */
383 unsigned long timeout; /* max time to wait for irq */
384
385 special_t special; /* special action flags */
386 select_t select; /* basic drive/head select reg value */
387
388 u8 keep_settings; /* restore settings after drive reset */
389 u8 using_dma; /* disk is using dma for read/write */
390 u8 retry_pio; /* retrying dma capable host in pio */
391 u8 state; /* retry state */
392 u8 waiting_for_dma; /* dma currently in progress */
393 u8 unmask; /* okay to unmask other irqs */
394 u8 bswap; /* byte swap data */
395 u8 noflush; /* don't attempt flushes */
396 u8 dsc_overlap; /* DSC overlap */
397 u8 nice1; /* give potential excess bandwidth */
398
399 unsigned present : 1; /* drive is physically present */
400 unsigned dead : 1; /* device ejected hint */
401 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
402 unsigned noprobe : 1; /* from: hdx=noprobe */
403 unsigned removable : 1; /* 1 if need to do check_media_change */
404 unsigned attach : 1; /* needed for removable devices */
405 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
406 unsigned no_unmask : 1; /* disallow setting unmask bit */
407 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
408 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
409 unsigned nice0 : 1; /* give obvious excess bandwidth */
410 unsigned nice2 : 1; /* give a share in our own bandwidth */
411 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
412 unsigned nodma : 1; /* disallow DMA */
413 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
414 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
415 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
416 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
417 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
418 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
419 unsigned post_reset : 1;
420 unsigned udma33_warned : 1;
421
422 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
423 u8 quirk_list; /* considered quirky, set for a specific host */
424 u8 init_speed; /* transfer rate set at boot */
425 u8 current_speed; /* current transfer rate set */
426 u8 desired_speed; /* desired transfer rate set */
427 u8 dn; /* now wide spread use */
428 u8 wcache; /* status of write cache */
429 u8 acoustic; /* acoustic management */
430 u8 media; /* disk, cdrom, tape, floppy, ... */
431 u8 ctl; /* "normal" value for IDE_CONTROL_REG */
432 u8 ready_stat; /* min status value for drive ready */
433 u8 mult_count; /* current multiple sector setting */
434 u8 mult_req; /* requested multiple sector setting */
435 u8 tune_req; /* requested drive tuning setting */
436 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
437 u8 bad_wstat; /* used for ignoring WRERR_STAT */
438 u8 nowerr; /* used for ignoring WRERR_STAT */
439 u8 sect0; /* offset of first sector for DM6:DDO */
440 u8 head; /* "real" number of heads */
441 u8 sect; /* "real" sectors per track */
442 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
443 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
444
445 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
446 unsigned int cyl; /* "real" number of cyls */
447 unsigned int drive_data; /* used by set_pio_mode/selectproc */
448 unsigned int failures; /* current failure count */
449 unsigned int max_failures; /* maximum allowed failure count */
450 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
451
452 u64 capacity64; /* total number of sectors */
453
454 int lun; /* logical unit */
455 int crc_count; /* crc counter to reduce drive speed */
456 #ifdef CONFIG_BLK_DEV_IDEACPI
457 struct ide_acpi_drive_link *acpidata;
458 #endif
459 struct list_head list;
460 struct device gendev;
461 struct completion gendev_rel_comp; /* to deal with device release() */
462 } ide_drive_t;
463
464 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
465
466 #define IDE_CHIPSET_PCI_MASK \
467 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
468 #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
469
470 struct ide_port_info;
471
472 typedef struct hwif_s {
473 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
474 struct hwif_s *mate; /* other hwif from same PCI chip */
475 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
476 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
477
478 char name[6]; /* name of interface, eg. "ide0" */
479
480 /* task file registers for pata and sata */
481 unsigned long io_ports[IDE_NR_PORTS];
482 unsigned long sata_scr[SATA_NR_PORTS];
483 unsigned long sata_misc[SATA_NR_PORTS];
484
485 ide_drive_t drives[MAX_DRIVES]; /* drive info */
486
487 u8 major; /* our major number */
488 u8 index; /* 0 for ide0; 1 for ide1; ... */
489 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
490 u8 straight8; /* Alan's straight 8 check */
491 u8 bus_state; /* power state of the IDE bus */
492
493 u32 host_flags;
494
495 u8 pio_mask;
496
497 u8 ultra_mask;
498 u8 mwdma_mask;
499 u8 swdma_mask;
500
501 u8 cbl; /* cable type */
502
503 hwif_chipset_t chipset; /* sub-module for tuning.. */
504
505 struct pci_dev *pci_dev; /* for pci chipsets */
506 const struct ide_port_info *cds; /* chipset device struct */
507
508 ide_ack_intr_t *ack_intr;
509
510 void (*rw_disk)(ide_drive_t *, struct request *);
511
512 #if 0
513 ide_hwif_ops_t *hwifops;
514 #else
515 /* routine to program host for PIO mode */
516 void (*set_pio_mode)(ide_drive_t *, const u8);
517 /* routine to program host for DMA mode */
518 void (*set_dma_mode)(ide_drive_t *, const u8);
519 /* tweaks hardware to select drive */
520 void (*selectproc)(ide_drive_t *);
521 /* chipset polling based on hba specifics */
522 int (*reset_poll)(ide_drive_t *);
523 /* chipset specific changes to default for device-hba resets */
524 void (*pre_reset)(ide_drive_t *);
525 /* routine to reset controller after a disk reset */
526 void (*resetproc)(ide_drive_t *);
527 /* special host masking for drive selection */
528 void (*maskproc)(ide_drive_t *, int);
529 /* check host's drive quirk list */
530 int (*quirkproc)(ide_drive_t *);
531 /* driver soft-power interface */
532 int (*busproc)(ide_drive_t *, int);
533 #endif
534 u8 (*mdma_filter)(ide_drive_t *);
535 u8 (*udma_filter)(ide_drive_t *);
536
537 void (*fixup)(struct hwif_s *);
538
539 void (*ata_input_data)(ide_drive_t *, void *, u32);
540 void (*ata_output_data)(ide_drive_t *, void *, u32);
541
542 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
543 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
544
545 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);
549 int (*ide_dma_on)(ide_drive_t *drive);
550 void (*dma_off_quietly)(ide_drive_t *drive);
551 int (*ide_dma_test_irq)(ide_drive_t *drive);
552 void (*ide_dma_clear_irq)(ide_drive_t *drive);
553 void (*dma_host_on)(ide_drive_t *drive);
554 void (*dma_host_off)(ide_drive_t *drive);
555 void (*dma_lost_irq)(ide_drive_t *drive);
556 void (*dma_timeout)(ide_drive_t *drive);
557
558 void (*OUTB)(u8 addr, unsigned long port);
559 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
560 void (*OUTW)(u16 addr, unsigned long port);
561 void (*OUTSW)(unsigned long port, void *addr, u32 count);
562 void (*OUTSL)(unsigned long port, void *addr, u32 count);
563
564 u8 (*INB)(unsigned long port);
565 u16 (*INW)(unsigned long port);
566 void (*INSW)(unsigned long port, void *addr, u32 count);
567 void (*INSL)(unsigned long port, void *addr, u32 count);
568
569 /* dma physical region descriptor table (cpu view) */
570 unsigned int *dmatable_cpu;
571 /* dma physical region descriptor table (dma view) */
572 dma_addr_t dmatable_dma;
573 /* Scatter-gather list used to build the above */
574 struct scatterlist *sg_table;
575 int sg_max_nents; /* Maximum number of entries in it */
576 int sg_nents; /* Current number of entries in it */
577 int sg_dma_direction; /* dma transfer direction */
578
579 /* data phase of the active command (currently only valid for PIO/DMA) */
580 int data_phase;
581
582 unsigned int nsect;
583 unsigned int nleft;
584 struct scatterlist *cursg;
585 unsigned int cursg_ofs;
586
587 int rqsize; /* max sectors per request */
588 int irq; /* our irq number */
589
590 unsigned long dma_base; /* base addr for dma ports */
591 unsigned long dma_command; /* dma command register */
592 unsigned long dma_vendor1; /* dma vendor 1 register */
593 unsigned long dma_status; /* dma status register */
594 unsigned long dma_vendor3; /* dma vendor 3 register */
595 unsigned long dma_prdtable; /* actual prd table address */
596
597 unsigned long config_data; /* for use by chipset-specific code */
598 unsigned long select_data; /* for use by chipset-specific code */
599
600 unsigned long extra_base; /* extra addr for dma ports */
601 unsigned extra_ports; /* number of extra dma ports */
602
603 unsigned noprobe : 1; /* don't probe for this interface */
604 unsigned present : 1; /* this interface exists */
605 unsigned hold : 1; /* this interface is always present */
606 unsigned serialized : 1; /* serialized all channel operation */
607 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
608 unsigned reset : 1; /* reset after probe */
609 unsigned auto_poll : 1; /* supports nop auto-poll */
610 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
611 unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
612 unsigned mmio : 1; /* host uses MMIO */
613
614 struct device gendev;
615 struct completion gendev_rel_comp; /* To deal with device release() */
616
617 void *hwif_data; /* extra hwif data */
618
619 unsigned dma;
620
621 #ifdef CONFIG_BLK_DEV_IDEACPI
622 struct ide_acpi_hwif_link *acpidata;
623 #endif
624 } ____cacheline_internodealigned_in_smp ide_hwif_t;
625
626 /*
627 * internal ide interrupt handler type
628 */
629 typedef ide_startstop_t (ide_pre_handler_t)(ide_drive_t *, struct request *);
630 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
631 typedef int (ide_expiry_t)(ide_drive_t *);
632
633 typedef struct hwgroup_s {
634 /* irq handler, if active */
635 ide_startstop_t (*handler)(ide_drive_t *);
636 /* irq handler, suspended if active */
637 ide_startstop_t (*handler_save)(ide_drive_t *);
638 /* BOOL: protects all fields below */
639 volatile int busy;
640 /* BOOL: wake us up on timer expiry */
641 unsigned int sleeping : 1;
642 /* BOOL: polling active & poll_timeout field valid */
643 unsigned int polling : 1;
644 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
645 unsigned int resetting : 1;
646
647 /* current drive */
648 ide_drive_t *drive;
649 /* ptr to current hwif in linked-list */
650 ide_hwif_t *hwif;
651
652 /* for pci chipsets */
653 struct pci_dev *pci_dev;
654
655 /* current request */
656 struct request *rq;
657 /* failsafe timer */
658 struct timer_list timer;
659 /* local copy of current write rq */
660 struct request wrq;
661 /* timeout value during long polls */
662 unsigned long poll_timeout;
663 /* queried upon timeouts */
664 int (*expiry)(ide_drive_t *);
665 /* ide_system_bus_speed */
666 int pio_clock;
667 int req_gen;
668 int req_gen_timer;
669
670 unsigned char cmd_buf[4];
671 } ide_hwgroup_t;
672
673 typedef struct ide_driver_s ide_driver_t;
674
675 extern struct mutex ide_setting_mtx;
676
677 int set_io_32bit(ide_drive_t *, int);
678 int set_pio_mode(ide_drive_t *, int);
679 int set_using_dma(ide_drive_t *, int);
680
681 #ifdef CONFIG_IDE_PROC_FS
682 /*
683 * configurable drive settings
684 */
685
686 #define TYPE_INT 0
687 #define TYPE_BYTE 1
688 #define TYPE_SHORT 2
689
690 #define SETTING_READ (1 << 0)
691 #define SETTING_WRITE (1 << 1)
692 #define SETTING_RW (SETTING_READ | SETTING_WRITE)
693
694 typedef int (ide_procset_t)(ide_drive_t *, int);
695 typedef struct ide_settings_s {
696 char *name;
697 int rw;
698 int data_type;
699 int min;
700 int max;
701 int mul_factor;
702 int div_factor;
703 void *data;
704 ide_procset_t *set;
705 int auto_remove;
706 struct ide_settings_s *next;
707 } ide_settings_t;
708
709 int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
710
711 /*
712 * /proc/ide interface
713 */
714 typedef struct {
715 const char *name;
716 mode_t mode;
717 read_proc_t *read_proc;
718 write_proc_t *write_proc;
719 } ide_proc_entry_t;
720
721 void proc_ide_create(void);
722 void proc_ide_destroy(void);
723 void ide_proc_register_port(ide_hwif_t *);
724 void ide_proc_unregister_port(ide_hwif_t *);
725 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
726 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
727
728 void ide_add_generic_settings(ide_drive_t *);
729
730 read_proc_t proc_ide_read_capacity;
731 read_proc_t proc_ide_read_geometry;
732
733 #ifdef CONFIG_BLK_DEV_IDEPCI
734 void ide_pci_create_host_proc(const char *, get_info_t *);
735 #endif
736
737 /*
738 * Standard exit stuff:
739 */
740 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
741 { \
742 len -= off; \
743 if (len < count) { \
744 *eof = 1; \
745 if (len <= 0) \
746 return 0; \
747 } else \
748 len = count; \
749 *start = page + off; \
750 return len; \
751 }
752 #else
753 static inline void proc_ide_create(void) { ; }
754 static inline void proc_ide_destroy(void) { ; }
755 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
756 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
757 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
758 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
759 static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
760 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
761 #endif
762
763 /*
764 * Power Management step value (rq->pm->pm_step).
765 *
766 * The step value starts at 0 (ide_pm_state_start_suspend) for a
767 * suspend operation or 1000 (ide_pm_state_start_resume) for a
768 * resume operation.
769 *
770 * For each step, the core calls the subdriver start_power_step() first.
771 * This can return:
772 * - ide_stopped : In this case, the core calls us back again unless
773 * step have been set to ide_power_state_completed.
774 * - ide_started : In this case, the channel is left busy until an
775 * async event (interrupt) occurs.
776 * Typically, start_power_step() will issue a taskfile request with
777 * do_rw_taskfile().
778 *
779 * Upon reception of the interrupt, the core will call complete_power_step()
780 * with the error code if any. This routine should update the step value
781 * and return. It should not start a new request. The core will call
782 * start_power_step for the new step value, unless step have been set to
783 * ide_power_state_completed.
784 *
785 * Subdrivers are expected to define their own additional power
786 * steps from 1..999 for suspend and from 1001..1999 for resume,
787 * other values are reserved for future use.
788 */
789
790 enum {
791 ide_pm_state_completed = -1,
792 ide_pm_state_start_suspend = 0,
793 ide_pm_state_start_resume = 1000,
794 };
795
796 /*
797 * Subdrivers support.
798 *
799 * The gendriver.owner field should be set to the module owner of this driver.
800 * The gendriver.name field should be set to the name of this driver
801 */
802 struct ide_driver_s {
803 const char *version;
804 u8 media;
805 unsigned supports_dsc_overlap : 1;
806 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
807 int (*end_request)(ide_drive_t *, int, int);
808 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
809 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
810 struct device_driver gen_driver;
811 int (*probe)(ide_drive_t *);
812 void (*remove)(ide_drive_t *);
813 void (*resume)(ide_drive_t *);
814 void (*shutdown)(ide_drive_t *);
815 #ifdef CONFIG_IDE_PROC_FS
816 ide_proc_entry_t *proc;
817 #endif
818 };
819
820 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
821
822 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
823
824 /*
825 * ide_hwifs[] is the master data structure used to keep track
826 * of just about everything in ide.c. Whenever possible, routines
827 * should be using pointers to a drive (ide_drive_t *) or
828 * pointers to a hwif (ide_hwif_t *), rather than indexing this
829 * structure directly (the allocation/layout may change!).
830 *
831 */
832 #ifndef _IDE_C
833 extern ide_hwif_t ide_hwifs[]; /* master data repository */
834 #endif
835 extern int noautodma;
836
837 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
838 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
839 int uptodate, int nr_sectors);
840
841 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
842
843 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
844 ide_expiry_t *);
845
846 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
847
848 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
849
850 ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
851
852 extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
853
854 extern void ide_fix_driveid(struct hd_driveid *);
855
856 extern void ide_fixstring(u8 *, const int, const int);
857
858 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
859
860 extern ide_startstop_t ide_do_reset (ide_drive_t *);
861
862 extern void ide_init_drive_cmd (struct request *rq);
863
864 /*
865 * "action" parameter type for ide_do_drive_cmd() below.
866 */
867 typedef enum {
868 ide_wait, /* insert rq at end of list, and wait for it */
869 ide_preempt, /* insert rq in front of current request */
870 ide_head_wait, /* insert rq in front of current request and wait for it */
871 ide_end /* insert rq at end of list, but don't wait for it */
872 } ide_action_t;
873
874 extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
875
876 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
877
878 /*
879 * Issue ATA command and wait for completion.
880 * Use for implementing commands in kernel
881 *
882 * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
883 */
884 extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *);
885
886 enum {
887 IDE_TFLAG_LBA48 = (1 << 0),
888 IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
889 IDE_TFLAG_FLAGGED = (1 << 2),
890 IDE_TFLAG_OUT_DATA = (1 << 3),
891 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
892 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
893 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
894 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
895 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
896 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
897 IDE_TFLAG_OUT_HOB_NSECT |
898 IDE_TFLAG_OUT_HOB_LBAL |
899 IDE_TFLAG_OUT_HOB_LBAM |
900 IDE_TFLAG_OUT_HOB_LBAH,
901 IDE_TFLAG_OUT_FEATURE = (1 << 9),
902 IDE_TFLAG_OUT_NSECT = (1 << 10),
903 IDE_TFLAG_OUT_LBAL = (1 << 11),
904 IDE_TFLAG_OUT_LBAM = (1 << 12),
905 IDE_TFLAG_OUT_LBAH = (1 << 13),
906 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
907 IDE_TFLAG_OUT_NSECT |
908 IDE_TFLAG_OUT_LBAL |
909 IDE_TFLAG_OUT_LBAM |
910 IDE_TFLAG_OUT_LBAH,
911 IDE_TFLAG_OUT_DEVICE = (1 << 14),
912 IDE_TFLAG_WRITE = (1 << 15),
913 };
914
915 struct ide_taskfile {
916 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
917
918 u8 hob_feature; /* 1-5: additional data to support LBA48 */
919 u8 hob_nsect;
920 u8 hob_lbal;
921 u8 hob_lbam;
922 u8 hob_lbah;
923
924 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
925
926 union { /*  7: */
927 u8 error; /* read: error */
928 u8 feature; /* write: feature */
929 };
930
931 u8 nsect; /* 8: number of sectors */
932 u8 lbal; /* 9: LBA low */
933 u8 lbam; /* 10: LBA mid */
934 u8 lbah; /* 11: LBA high */
935
936 u8 device; /* 12: device select */
937
938 union { /* 13: */
939 u8 status; /*  read: status  */
940 u8 command; /* write: command */
941 };
942 };
943
944 typedef struct ide_task_s {
945 union {
946 struct ide_taskfile tf;
947 u8 tf_array[14];
948 };
949 u16 tf_flags;
950 ide_reg_valid_t tf_in_flags;
951 int data_phase;
952 ide_pre_handler_t *prehandler;
953 ide_handler_t *handler;
954 struct request *rq; /* copy of request */
955 void *special; /* valid_t generally */
956 } ide_task_t;
957
958 void ide_tf_load(ide_drive_t *, ide_task_t *);
959
960 extern u32 ide_read_24(ide_drive_t *);
961
962 extern void SELECT_DRIVE(ide_drive_t *);
963 extern void SELECT_MASK(ide_drive_t *, int);
964
965 extern int drive_is_ready(ide_drive_t *);
966
967 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
968
969 /*
970 * taskfile io for disks for now...and builds request from ide_ioctl
971 */
972 extern ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
973
974 /*
975 * Special Flagged Register Validation Caller
976 */
977 extern ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *);
978
979 extern ide_startstop_t set_multmode_intr(ide_drive_t *);
980 extern ide_startstop_t set_geometry_intr(ide_drive_t *);
981 extern ide_startstop_t recal_intr(ide_drive_t *);
982 extern ide_startstop_t task_no_data_intr(ide_drive_t *);
983 extern ide_startstop_t task_in_intr(ide_drive_t *);
984 extern ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *);
985
986 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
987 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
988
989 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
990 int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
991 int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
992
993 extern int system_bus_clock(void);
994
995 extern int ide_driveid_update(ide_drive_t *);
996 extern int ide_ata66_check(ide_drive_t *, ide_task_t *);
997 extern int ide_config_drive_speed(ide_drive_t *, u8);
998 extern u8 eighty_ninty_three (ide_drive_t *);
999 extern int set_transfer(ide_drive_t *, ide_task_t *);
1000 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1001
1002 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1003
1004 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1005
1006 extern int ide_spin_wait_hwgroup(ide_drive_t *);
1007 extern void ide_timer_expiry(unsigned long);
1008 extern irqreturn_t ide_intr(int irq, void *dev_id);
1009 extern void do_ide_request(struct request_queue *);
1010
1011 void ide_init_disk(struct gendisk *, ide_drive_t *);
1012
1013 extern int ideprobe_init(void);
1014
1015 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1016 extern void ide_scan_pcibus(int scan_direction) __init;
1017 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1018 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1019 #else
1020 #define ide_pci_register_driver(d) pci_register_driver(d)
1021 #endif
1022
1023 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
1024 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1025
1026 extern void default_hwif_iops(ide_hwif_t *);
1027 extern void default_hwif_mmiops(ide_hwif_t *);
1028 extern void default_hwif_transport(ide_hwif_t *);
1029
1030 typedef struct ide_pci_enablebit_s {
1031 u8 reg; /* byte pci reg holding the enable-bit */
1032 u8 mask; /* mask to isolate the enable-bit */
1033 u8 val; /* value of masked reg when "enabled" */
1034 } ide_pci_enablebit_t;
1035
1036 enum {
1037 /* Uses ISA control ports not PCI ones. */
1038 IDE_HFLAG_ISA_PORTS = (1 << 0),
1039 /* single port device */
1040 IDE_HFLAG_SINGLE = (1 << 1),
1041 /* don't use legacy PIO blacklist */
1042 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1043 /* don't use conservative PIO "downgrade" */
1044 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
1045 /* use PIO8/9 for prefetch off/on */
1046 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1047 /* use PIO6/7 for fast-devsel off/on */
1048 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1049 /* use 100-102 and 200-202 PIO values to set DMA modes */
1050 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1051 /*
1052 * keep DMA setting when programming PIO mode, may be used only
1053 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1054 */
1055 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1056 /* program host for the transfer mode after programming device */
1057 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1058 /* don't program host/device for the transfer mode ("smart" hosts) */
1059 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1060 /* trust BIOS for programming chipset/device for DMA */
1061 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1062 /* host uses VDMA */
1063 IDE_HFLAG_VDMA = (1 << 11),
1064 /* ATAPI DMA is unsupported */
1065 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1066 /* set if host is a "bootable" controller */
1067 IDE_HFLAG_BOOTABLE = (1 << 13),
1068 /* host doesn't support DMA */
1069 IDE_HFLAG_NO_DMA = (1 << 14),
1070 /* check if host is PCI IDE device before allowing DMA */
1071 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1072 /* host is CS5510/CS5520 */
1073 IDE_HFLAG_CS5520 = (1 << 16),
1074 /* no LBA48 */
1075 IDE_HFLAG_NO_LBA48 = (1 << 17),
1076 /* no LBA48 DMA */
1077 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1078 /* data FIFO is cleared by an error */
1079 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1080 /* serialize ports */
1081 IDE_HFLAG_SERIALIZE = (1 << 20),
1082 /* use legacy IRQs */
1083 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1084 /* force use of legacy IRQs */
1085 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1086 /* limit LBA48 requests to 256 sectors */
1087 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1088 /* use 32-bit I/O ops */
1089 IDE_HFLAG_IO_32BIT = (1 << 24),
1090 /* unmask IRQs */
1091 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1092 };
1093
1094 #ifdef CONFIG_BLK_DEV_OFFBOARD
1095 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1096 #else
1097 # define IDE_HFLAG_OFF_BOARD 0
1098 #endif
1099
1100 struct ide_port_info {
1101 char *name;
1102 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1103 void (*init_iops)(ide_hwif_t *);
1104 void (*init_hwif)(ide_hwif_t *);
1105 void (*init_dma)(ide_hwif_t *, unsigned long);
1106 void (*fixup)(ide_hwif_t *);
1107 ide_pci_enablebit_t enablebits[2];
1108 hwif_chipset_t chipset;
1109 unsigned int extra;
1110 u32 host_flags;
1111 u8 pio_mask;
1112 u8 swdma_mask;
1113 u8 mwdma_mask;
1114 u8 udma_mask;
1115 };
1116
1117 int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
1118 int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
1119
1120 void ide_map_sg(ide_drive_t *, struct request *);
1121 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1122
1123 #define BAD_DMA_DRIVE 0
1124 #define GOOD_DMA_DRIVE 1
1125
1126 struct drive_list_entry {
1127 const char *id_model;
1128 const char *id_firmware;
1129 };
1130
1131 int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
1132
1133 #ifdef CONFIG_BLK_DEV_IDEDMA
1134 int __ide_dma_bad_drive(ide_drive_t *);
1135 int ide_id_dma_bug(ide_drive_t *);
1136
1137 u8 ide_find_dma_mode(ide_drive_t *, u8);
1138
1139 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1140 {
1141 return ide_find_dma_mode(drive, XFER_UDMA_6);
1142 }
1143
1144 void ide_dma_off(ide_drive_t *);
1145 int ide_set_dma(ide_drive_t *);
1146 ide_startstop_t ide_dma_intr(ide_drive_t *);
1147
1148 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1149 extern int ide_build_sglist(ide_drive_t *, struct request *);
1150 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1151 extern void ide_destroy_dmatable(ide_drive_t *);
1152 extern int ide_release_dma(ide_hwif_t *);
1153 extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
1154
1155 void ide_dma_host_off(ide_drive_t *);
1156 void ide_dma_off_quietly(ide_drive_t *);
1157 void ide_dma_host_on(ide_drive_t *);
1158 extern int __ide_dma_on(ide_drive_t *);
1159 extern int ide_dma_setup(ide_drive_t *);
1160 extern void ide_dma_start(ide_drive_t *);
1161 extern int __ide_dma_end(ide_drive_t *);
1162 extern void ide_dma_lost_irq(ide_drive_t *);
1163 extern void ide_dma_timeout(ide_drive_t *);
1164 #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
1165
1166 #else
1167 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1168 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1169 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1170 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1171 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1172 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1173 #endif /* CONFIG_BLK_DEV_IDEDMA */
1174
1175 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
1176 static inline void ide_release_dma(ide_hwif_t *drive) {;}
1177 #endif
1178
1179 #ifdef CONFIG_BLK_DEV_IDEACPI
1180 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1181 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1182 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1183 extern void ide_acpi_init(ide_hwif_t *hwif);
1184 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1185 #else
1186 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1187 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1188 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1189 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1190 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1191 #endif
1192
1193 extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1194 extern void ide_hwif_release_regions(ide_hwif_t* hwif);
1195 extern void ide_unregister (unsigned int index);
1196
1197 void ide_register_region(struct gendisk *);
1198 void ide_unregister_region(struct gendisk *);
1199
1200 void ide_undecoded_slave(ide_hwif_t *);
1201
1202 int ide_device_add(u8 idx[4]);
1203
1204 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1205 {
1206 return hwif->hwif_data;
1207 }
1208
1209 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1210 {
1211 hwif->hwif_data = data;
1212 }
1213
1214 const char *ide_xfer_verbose(u8 mode);
1215 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1216 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1217
1218 static inline int ide_dev_has_iordy(struct hd_driveid *id)
1219 {
1220 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1221 }
1222
1223 static inline int ide_dev_is_sata(struct hd_driveid *id)
1224 {
1225 /*
1226 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1227 * verifying that word 80 by casting it to a signed type --
1228 * this trick allows us to filter out the reserved values of
1229 * 0x0000 and 0xffff along with the earlier ATA revisions...
1230 */
1231 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1232 return 1;
1233 return 0;
1234 }
1235
1236 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1237
1238 typedef struct ide_pio_timings_s {
1239 int setup_time; /* Address setup (ns) minimum */
1240 int active_time; /* Active pulse (ns) minimum */
1241 int cycle_time; /* Cycle time (ns) minimum = */
1242 /* active + recovery (+ setup for some chips) */
1243 } ide_pio_timings_t;
1244
1245 unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
1246 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1247 extern const ide_pio_timings_t ide_pio_timings[6];
1248
1249 int ide_set_pio_mode(ide_drive_t *, u8);
1250 int ide_set_dma_mode(ide_drive_t *, u8);
1251
1252 void ide_set_pio(ide_drive_t *, u8);
1253
1254 static inline void ide_set_max_pio(ide_drive_t *drive)
1255 {
1256 ide_set_pio(drive, 255);
1257 }
1258
1259 extern spinlock_t ide_lock;
1260 extern struct mutex ide_cfg_mtx;
1261 /*
1262 * Structure locking:
1263 *
1264 * ide_cfg_mtx and ide_lock together protect changes to
1265 * ide_hwif_t->{next,hwgroup}
1266 * ide_drive_t->next
1267 *
1268 * ide_hwgroup_t->busy: ide_lock
1269 * ide_hwgroup_t->hwif: ide_lock
1270 * ide_hwif_t->mate: constant, no locking
1271 * ide_drive_t->hwif: constant, no locking
1272 */
1273
1274 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1275
1276 extern struct bus_type ide_bus_type;
1277
1278 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1279 #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1280
1281 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1282 #define ide_id_has_flush_cache_ext(id) \
1283 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1284
1285 static inline int hwif_to_node(ide_hwif_t *hwif)
1286 {
1287 struct pci_dev *dev = hwif->pci_dev;
1288 return dev ? pcibus_to_node(dev->bus) : -1;
1289 }
1290
1291 static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
1292 {
1293 ide_hwif_t *hwif = HWIF(drive);
1294
1295 return &hwif->drives[(drive->dn ^ 1) & 1];
1296 }
1297
1298 #endif /* _IDE_H */
kernel source for telekom puls (alcatel/mediatek)