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1da177e4 LT |
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 | ||
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/ioport.h> | |
11 | #include <linux/hdreg.h> | |
1da177e4 LT |
12 | #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> | |
f36d4024 | 19 | #include <linux/completion.h> |
e3a59b4d HR |
20 | #ifdef CONFIG_BLK_DEV_IDEACPI |
21 | #include <acpi/acpi.h> | |
22 | #endif | |
1da177e4 LT |
23 | #include <asm/byteorder.h> |
24 | #include <asm/system.h> | |
25 | #include <asm/io.h> | |
f9383c42 | 26 | #include <asm/mutex.h> |
1da177e4 | 27 | |
729d4de9 | 28 | #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) |
4ee06b7e BZ |
29 | # define SUPPORT_VLB_SYNC 0 |
30 | #else | |
31 | # define SUPPORT_VLB_SYNC 1 | |
1da177e4 LT |
32 | #endif |
33 | ||
34 | /* | |
35 | * Used to indicate "no IRQ", should be a value that cannot be an IRQ | |
36 | * number. | |
37 | */ | |
38 | ||
39 | #define IDE_NO_IRQ (-1) | |
40 | ||
1da177e4 LT |
41 | typedef unsigned char byte; /* used everywhere */ |
42 | ||
43 | /* | |
44 | * Probably not wise to fiddle with these | |
45 | */ | |
46 | #define ERROR_MAX 8 /* Max read/write errors per sector */ | |
47 | #define ERROR_RESET 3 /* Reset controller every 4th retry */ | |
48 | #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ | |
49 | ||
1da177e4 LT |
50 | /* |
51 | * state flags | |
52 | */ | |
53 | ||
54 | #define DMA_PIO_RETRY 1 /* retrying in PIO */ | |
55 | ||
56 | #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif)) | |
57 | #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) | |
58 | ||
59 | /* | |
60 | * Definitions for accessing IDE controller registers | |
61 | */ | |
62 | #define IDE_NR_PORTS (10) | |
63 | ||
4c3032d8 BZ |
64 | struct ide_io_ports { |
65 | unsigned long data_addr; | |
66 | ||
67 | union { | |
68 | unsigned long error_addr; /* read: error */ | |
69 | unsigned long feature_addr; /* write: feature */ | |
70 | }; | |
71 | ||
72 | unsigned long nsect_addr; | |
73 | unsigned long lbal_addr; | |
74 | unsigned long lbam_addr; | |
75 | unsigned long lbah_addr; | |
76 | ||
77 | unsigned long device_addr; | |
78 | ||
79 | union { | |
80 | unsigned long status_addr; /* read: status */ | |
81 | unsigned long command_addr; /* write: command */ | |
82 | }; | |
83 | ||
84 | unsigned long ctl_addr; | |
85 | ||
86 | unsigned long irq_addr; | |
87 | }; | |
1da177e4 LT |
88 | |
89 | #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) | |
90 | #define BAD_R_STAT (BUSY_STAT | ERR_STAT) | |
91 | #define BAD_W_STAT (BAD_R_STAT | WRERR_STAT) | |
92 | #define BAD_STAT (BAD_R_STAT | DRQ_STAT) | |
93 | #define DRIVE_READY (READY_STAT | SEEK_STAT) | |
1da177e4 LT |
94 | |
95 | #define BAD_CRC (ABRT_ERR | ICRC_ERR) | |
96 | ||
97 | #define SATA_NR_PORTS (3) /* 16 possible ?? */ | |
98 | ||
99 | #define SATA_STATUS_OFFSET (0) | |
1da177e4 | 100 | #define SATA_ERROR_OFFSET (1) |
1da177e4 | 101 | #define SATA_CONTROL_OFFSET (2) |
1da177e4 | 102 | |
1da177e4 LT |
103 | /* |
104 | * Our Physical Region Descriptor (PRD) table should be large enough | |
105 | * to handle the biggest I/O request we are likely to see. Since requests | |
106 | * can have no more than 256 sectors, and since the typical blocksize is | |
107 | * two or more sectors, we could get by with a limit of 128 entries here for | |
108 | * the usual worst case. Most requests seem to include some contiguous blocks, | |
109 | * further reducing the number of table entries required. | |
110 | * | |
111 | * The driver reverts to PIO mode for individual requests that exceed | |
112 | * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling | |
113 | * 100% of all crazy scenarios here is not necessary. | |
114 | * | |
115 | * As it turns out though, we must allocate a full 4KB page for this, | |
116 | * so the two PRD tables (ide0 & ide1) will each get half of that, | |
117 | * allowing each to have about 256 entries (8 bytes each) from this. | |
118 | */ | |
119 | #define PRD_BYTES 8 | |
120 | #define PRD_ENTRIES 256 | |
121 | ||
122 | /* | |
123 | * Some more useful definitions | |
124 | */ | |
125 | #define PARTN_BITS 6 /* number of minor dev bits for partitions */ | |
126 | #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ | |
127 | #define SECTOR_SIZE 512 | |
128 | #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */ | |
129 | #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t))) | |
130 | ||
131 | /* | |
132 | * Timeouts for various operations: | |
133 | */ | |
134 | #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */ | |
135 | #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */ | |
136 | #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */ | |
137 | #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */ | |
138 | #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */ | |
139 | #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */ | |
140 | ||
79e36a9f EO |
141 | /* |
142 | * Op codes for special requests to be handled by ide_special_rq(). | |
143 | * Values should be in the range of 0x20 to 0x3f. | |
144 | */ | |
145 | #define REQ_DRIVE_RESET 0x20 | |
146 | ||
1da177e4 LT |
147 | /* |
148 | * Check for an interrupt and acknowledge the interrupt status | |
149 | */ | |
150 | struct hwif_s; | |
151 | typedef int (ide_ack_intr_t)(struct hwif_s *); | |
152 | ||
1da177e4 LT |
153 | /* |
154 | * hwif_chipset_t is used to keep track of the specific hardware | |
155 | * chipset used by each IDE interface, if known. | |
156 | */ | |
528a572d | 157 | enum { ide_unknown, ide_generic, ide_pci, |
1da177e4 LT |
158 | ide_cmd640, ide_dtc2278, ide_ali14xx, |
159 | ide_qd65xx, ide_umc8672, ide_ht6560b, | |
160 | ide_rz1000, ide_trm290, | |
161 | ide_cmd646, ide_cy82c693, ide_4drives, | |
b7691646 | 162 | ide_pmac, ide_acorn, |
9a0e77f2 | 163 | ide_au1xxx, ide_palm3710 |
528a572d BZ |
164 | }; |
165 | ||
166 | typedef u8 hwif_chipset_t; | |
1da177e4 LT |
167 | |
168 | /* | |
169 | * Structure to hold all information about the location of this port | |
170 | */ | |
171 | typedef struct hw_regs_s { | |
4c3032d8 BZ |
172 | union { |
173 | struct ide_io_ports io_ports; | |
174 | unsigned long io_ports_array[IDE_NR_PORTS]; | |
175 | }; | |
176 | ||
1da177e4 | 177 | int irq; /* our irq number */ |
1da177e4 LT |
178 | ide_ack_intr_t *ack_intr; /* acknowledge interrupt */ |
179 | hwif_chipset_t chipset; | |
c56c5648 | 180 | struct device *dev, *parent; |
d6276b5f | 181 | unsigned long config; |
1da177e4 LT |
182 | } hw_regs_t; |
183 | ||
cbb010c1 | 184 | void ide_init_port_data(struct hwif_s *, unsigned int); |
57c802e8 | 185 | void ide_init_port_hw(struct hwif_s *, hw_regs_t *); |
baa8f3e9 | 186 | |
1da177e4 LT |
187 | static inline void ide_std_init_ports(hw_regs_t *hw, |
188 | unsigned long io_addr, | |
189 | unsigned long ctl_addr) | |
190 | { | |
191 | unsigned int i; | |
192 | ||
4c3032d8 BZ |
193 | for (i = 0; i <= 7; i++) |
194 | hw->io_ports_array[i] = io_addr++; | |
1da177e4 | 195 | |
4c3032d8 | 196 | hw->io_ports.ctl_addr = ctl_addr; |
1da177e4 LT |
197 | } |
198 | ||
a861beb1 BZ |
199 | /* for IDE PCI controllers in legacy mode, temporary */ |
200 | static inline int __ide_default_irq(unsigned long base) | |
201 | { | |
202 | switch (base) { | |
203 | #ifdef CONFIG_IA64 | |
204 | case 0x1f0: return isa_irq_to_vector(14); | |
205 | case 0x170: return isa_irq_to_vector(15); | |
206 | #else | |
207 | case 0x1f0: return 14; | |
208 | case 0x170: return 15; | |
209 | #endif | |
210 | } | |
211 | return 0; | |
212 | } | |
213 | ||
1da177e4 LT |
214 | #include <asm/ide.h> |
215 | ||
83d7dbc4 MM |
216 | #if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED) |
217 | #undef MAX_HWIFS | |
83ae20c8 BH |
218 | #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS |
219 | #endif | |
220 | ||
1da177e4 LT |
221 | /* Currently only m68k, apus and m8xx need it */ |
222 | #ifndef IDE_ARCH_ACK_INTR | |
223 | # define ide_ack_intr(hwif) (1) | |
224 | #endif | |
225 | ||
226 | /* Currently only Atari needs it */ | |
227 | #ifndef IDE_ARCH_LOCK | |
228 | # define ide_release_lock() do {} while (0) | |
229 | # define ide_get_lock(hdlr, data) do {} while (0) | |
230 | #endif /* IDE_ARCH_LOCK */ | |
231 | ||
232 | /* | |
233 | * Now for the data we need to maintain per-drive: ide_drive_t | |
234 | */ | |
235 | ||
236 | #define ide_scsi 0x21 | |
237 | #define ide_disk 0x20 | |
238 | #define ide_optical 0x7 | |
239 | #define ide_cdrom 0x5 | |
240 | #define ide_tape 0x1 | |
241 | #define ide_floppy 0x0 | |
242 | ||
243 | /* | |
244 | * Special Driver Flags | |
245 | * | |
246 | * set_geometry : respecify drive geometry | |
247 | * recalibrate : seek to cyl 0 | |
248 | * set_multmode : set multmode count | |
249 | * set_tune : tune interface for drive | |
250 | * serviced : service command | |
251 | * reserved : unused | |
252 | */ | |
253 | typedef union { | |
254 | unsigned all : 8; | |
255 | struct { | |
1da177e4 LT |
256 | unsigned set_geometry : 1; |
257 | unsigned recalibrate : 1; | |
258 | unsigned set_multmode : 1; | |
259 | unsigned set_tune : 1; | |
260 | unsigned serviced : 1; | |
261 | unsigned reserved : 3; | |
1da177e4 LT |
262 | } b; |
263 | } special_t; | |
264 | ||
1da177e4 LT |
265 | /* |
266 | * ATA-IDE Select Register, aka Device-Head | |
267 | * | |
268 | * head : always zeros here | |
269 | * unit : drive select number: 0/1 | |
270 | * bit5 : always 1 | |
271 | * lba : using LBA instead of CHS | |
272 | * bit7 : always 1 | |
273 | */ | |
274 | typedef union { | |
275 | unsigned all : 8; | |
276 | struct { | |
277 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
278 | unsigned head : 4; | |
279 | unsigned unit : 1; | |
280 | unsigned bit5 : 1; | |
281 | unsigned lba : 1; | |
282 | unsigned bit7 : 1; | |
283 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
284 | unsigned bit7 : 1; | |
285 | unsigned lba : 1; | |
286 | unsigned bit5 : 1; | |
287 | unsigned unit : 1; | |
288 | unsigned head : 4; | |
289 | #else | |
290 | #error "Please fix <asm/byteorder.h>" | |
291 | #endif | |
292 | } b; | |
293 | } select_t, ata_select_t; | |
294 | ||
1da177e4 LT |
295 | /* |
296 | * Status returned from various ide_ functions | |
297 | */ | |
298 | typedef enum { | |
299 | ide_stopped, /* no drive operation was started */ | |
300 | ide_started, /* a drive operation was started, handler was set */ | |
301 | } ide_startstop_t; | |
302 | ||
303 | struct ide_driver_s; | |
304 | struct ide_settings_s; | |
305 | ||
e3a59b4d HR |
306 | #ifdef CONFIG_BLK_DEV_IDEACPI |
307 | struct ide_acpi_drive_link; | |
308 | struct ide_acpi_hwif_link; | |
309 | #endif | |
310 | ||
d7c26ebb | 311 | struct ide_drive_s { |
1da177e4 LT |
312 | char name[4]; /* drive name, such as "hda" */ |
313 | char driver_req[10]; /* requests specific driver */ | |
314 | ||
165125e1 | 315 | struct request_queue *queue; /* request queue */ |
1da177e4 LT |
316 | |
317 | struct request *rq; /* current request */ | |
318 | struct ide_drive_s *next; /* circular list of hwgroup drives */ | |
1da177e4 LT |
319 | void *driver_data; /* extra driver data */ |
320 | struct hd_driveid *id; /* drive model identification info */ | |
7662d046 | 321 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
322 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
323 | struct ide_settings_s *settings;/* /proc/ide/ drive settings */ | |
7662d046 | 324 | #endif |
1da177e4 LT |
325 | struct hwif_s *hwif; /* actually (ide_hwif_t *) */ |
326 | ||
327 | unsigned long sleep; /* sleep until this time */ | |
328 | unsigned long service_start; /* time we started last request */ | |
329 | unsigned long service_time; /* service time of last request */ | |
330 | unsigned long timeout; /* max time to wait for irq */ | |
331 | ||
332 | special_t special; /* special action flags */ | |
333 | select_t select; /* basic drive/head select reg value */ | |
334 | ||
335 | u8 keep_settings; /* restore settings after drive reset */ | |
1da177e4 LT |
336 | u8 using_dma; /* disk is using dma for read/write */ |
337 | u8 retry_pio; /* retrying dma capable host in pio */ | |
338 | u8 state; /* retry state */ | |
339 | u8 waiting_for_dma; /* dma currently in progress */ | |
340 | u8 unmask; /* okay to unmask other irqs */ | |
36193484 | 341 | u8 noflush; /* don't attempt flushes */ |
1da177e4 LT |
342 | u8 dsc_overlap; /* DSC overlap */ |
343 | u8 nice1; /* give potential excess bandwidth */ | |
344 | ||
345 | unsigned present : 1; /* drive is physically present */ | |
346 | unsigned dead : 1; /* device ejected hint */ | |
347 | unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */ | |
348 | unsigned noprobe : 1; /* from: hdx=noprobe */ | |
349 | unsigned removable : 1; /* 1 if need to do check_media_change */ | |
350 | unsigned attach : 1; /* needed for removable devices */ | |
1da177e4 LT |
351 | unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */ |
352 | unsigned no_unmask : 1; /* disallow setting unmask bit */ | |
353 | unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */ | |
354 | unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */ | |
1da177e4 | 355 | unsigned doorlocking : 1; /* for removable only: door lock/unlock works */ |
c223701c | 356 | unsigned nodma : 1; /* disallow DMA */ |
1da177e4 LT |
357 | unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */ |
358 | unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ | |
1da177e4 LT |
359 | unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */ |
360 | unsigned sleeping : 1; /* 1=sleeping & sleep field valid */ | |
361 | unsigned post_reset : 1; | |
7f8f48af | 362 | unsigned udma33_warned : 1; |
1da177e4 | 363 | |
1497943e | 364 | u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */ |
1da177e4 LT |
365 | u8 quirk_list; /* considered quirky, set for a specific host */ |
366 | u8 init_speed; /* transfer rate set at boot */ | |
1da177e4 | 367 | u8 current_speed; /* current transfer rate set */ |
513daadd | 368 | u8 desired_speed; /* desired transfer rate set */ |
1da177e4 LT |
369 | u8 dn; /* now wide spread use */ |
370 | u8 wcache; /* status of write cache */ | |
371 | u8 acoustic; /* acoustic management */ | |
372 | u8 media; /* disk, cdrom, tape, floppy, ... */ | |
1da177e4 LT |
373 | u8 ready_stat; /* min status value for drive ready */ |
374 | u8 mult_count; /* current multiple sector setting */ | |
375 | u8 mult_req; /* requested multiple sector setting */ | |
376 | u8 tune_req; /* requested drive tuning setting */ | |
377 | u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ | |
378 | u8 bad_wstat; /* used for ignoring WRERR_STAT */ | |
379 | u8 nowerr; /* used for ignoring WRERR_STAT */ | |
380 | u8 sect0; /* offset of first sector for DM6:DDO */ | |
381 | u8 head; /* "real" number of heads */ | |
382 | u8 sect; /* "real" sectors per track */ | |
383 | u8 bios_head; /* BIOS/fdisk/LILO number of heads */ | |
384 | u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ | |
385 | ||
386 | unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ | |
387 | unsigned int cyl; /* "real" number of cyls */ | |
26bcb879 | 388 | unsigned int drive_data; /* used by set_pio_mode/selectproc */ |
1da177e4 LT |
389 | unsigned int failures; /* current failure count */ |
390 | unsigned int max_failures; /* maximum allowed failure count */ | |
dbe217af | 391 | u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */ |
1da177e4 LT |
392 | |
393 | u64 capacity64; /* total number of sectors */ | |
394 | ||
395 | int lun; /* logical unit */ | |
396 | int crc_count; /* crc counter to reduce drive speed */ | |
e3a59b4d HR |
397 | #ifdef CONFIG_BLK_DEV_IDEACPI |
398 | struct ide_acpi_drive_link *acpidata; | |
399 | #endif | |
1da177e4 LT |
400 | struct list_head list; |
401 | struct device gendev; | |
f36d4024 | 402 | struct completion gendev_rel_comp; /* to deal with device release() */ |
d7c26ebb BP |
403 | |
404 | /* callback for packet commands */ | |
405 | void (*pc_callback)(struct ide_drive_s *); | |
406 | }; | |
407 | ||
408 | typedef struct ide_drive_s ide_drive_t; | |
1da177e4 | 409 | |
8604affd BZ |
410 | #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) |
411 | ||
1da177e4 LT |
412 | #define IDE_CHIPSET_PCI_MASK \ |
413 | ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx)) | |
414 | #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1) | |
415 | ||
374e042c | 416 | struct ide_task_s; |
039788e1 | 417 | struct ide_port_info; |
1da177e4 | 418 | |
374e042c BZ |
419 | struct ide_tp_ops { |
420 | void (*exec_command)(struct hwif_s *, u8); | |
421 | u8 (*read_status)(struct hwif_s *); | |
422 | u8 (*read_altstatus)(struct hwif_s *); | |
423 | u8 (*read_sff_dma_status)(struct hwif_s *); | |
424 | ||
425 | void (*set_irq)(struct hwif_s *, int); | |
426 | ||
427 | void (*tf_load)(ide_drive_t *, struct ide_task_s *); | |
428 | void (*tf_read)(ide_drive_t *, struct ide_task_s *); | |
429 | ||
430 | void (*input_data)(ide_drive_t *, struct request *, void *, | |
431 | unsigned int); | |
432 | void (*output_data)(ide_drive_t *, struct request *, void *, | |
433 | unsigned int); | |
434 | }; | |
435 | ||
436 | extern const struct ide_tp_ops default_tp_ops; | |
437 | ||
ac95beed | 438 | struct ide_port_ops { |
e6d95bd1 BZ |
439 | /* host specific initialization of a device */ |
440 | void (*init_dev)(ide_drive_t *); | |
ac95beed BZ |
441 | /* routine to program host for PIO mode */ |
442 | void (*set_pio_mode)(ide_drive_t *, const u8); | |
443 | /* routine to program host for DMA mode */ | |
444 | void (*set_dma_mode)(ide_drive_t *, const u8); | |
445 | /* tweaks hardware to select drive */ | |
446 | void (*selectproc)(ide_drive_t *); | |
447 | /* chipset polling based on hba specifics */ | |
448 | int (*reset_poll)(ide_drive_t *); | |
449 | /* chipset specific changes to default for device-hba resets */ | |
450 | void (*pre_reset)(ide_drive_t *); | |
451 | /* routine to reset controller after a disk reset */ | |
452 | void (*resetproc)(ide_drive_t *); | |
453 | /* special host masking for drive selection */ | |
454 | void (*maskproc)(ide_drive_t *, int); | |
455 | /* check host's drive quirk list */ | |
456 | void (*quirkproc)(ide_drive_t *); | |
457 | ||
458 | u8 (*mdma_filter)(ide_drive_t *); | |
459 | u8 (*udma_filter)(ide_drive_t *); | |
460 | ||
461 | u8 (*cable_detect)(struct hwif_s *); | |
462 | }; | |
463 | ||
5e37bdc0 BZ |
464 | struct ide_dma_ops { |
465 | void (*dma_host_set)(struct ide_drive_s *, int); | |
466 | int (*dma_setup)(struct ide_drive_s *); | |
467 | void (*dma_exec_cmd)(struct ide_drive_s *, u8); | |
468 | void (*dma_start)(struct ide_drive_s *); | |
469 | int (*dma_end)(struct ide_drive_s *); | |
470 | int (*dma_test_irq)(struct ide_drive_s *); | |
471 | void (*dma_lost_irq)(struct ide_drive_s *); | |
472 | void (*dma_timeout)(struct ide_drive_s *); | |
473 | }; | |
474 | ||
1da177e4 LT |
475 | typedef struct hwif_s { |
476 | struct hwif_s *next; /* for linked-list in ide_hwgroup_t */ | |
477 | struct hwif_s *mate; /* other hwif from same PCI chip */ | |
478 | struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */ | |
479 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ | |
480 | ||
481 | char name[6]; /* name of interface, eg. "ide0" */ | |
482 | ||
4c3032d8 BZ |
483 | struct ide_io_ports io_ports; |
484 | ||
1da177e4 | 485 | unsigned long sata_scr[SATA_NR_PORTS]; |
1da177e4 | 486 | |
1da177e4 LT |
487 | ide_drive_t drives[MAX_DRIVES]; /* drive info */ |
488 | ||
489 | u8 major; /* our major number */ | |
490 | u8 index; /* 0 for ide0; 1 for ide1; ... */ | |
491 | u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ | |
1da177e4 LT |
492 | u8 bus_state; /* power state of the IDE bus */ |
493 | ||
e95d9c6b | 494 | u32 host_flags; |
6a824c92 | 495 | |
4099d143 BZ |
496 | u8 pio_mask; |
497 | ||
1da177e4 LT |
498 | u8 ultra_mask; |
499 | u8 mwdma_mask; | |
500 | u8 swdma_mask; | |
501 | ||
49521f97 BZ |
502 | u8 cbl; /* cable type */ |
503 | ||
1da177e4 LT |
504 | hwif_chipset_t chipset; /* sub-module for tuning.. */ |
505 | ||
36501650 BZ |
506 | struct device *dev; |
507 | ||
18e181fe BZ |
508 | ide_ack_intr_t *ack_intr; |
509 | ||
1da177e4 LT |
510 | void (*rw_disk)(ide_drive_t *, struct request *); |
511 | ||
374e042c | 512 | const struct ide_tp_ops *tp_ops; |
ac95beed | 513 | const struct ide_port_ops *port_ops; |
f37afdac | 514 | const struct ide_dma_ops *dma_ops; |
bfa14b42 | 515 | |
f0dd8712 | 516 | void (*ide_dma_clear_irq)(ide_drive_t *drive); |
1da177e4 | 517 | |
1da177e4 LT |
518 | /* dma physical region descriptor table (cpu view) */ |
519 | unsigned int *dmatable_cpu; | |
520 | /* dma physical region descriptor table (dma view) */ | |
521 | dma_addr_t dmatable_dma; | |
522 | /* Scatter-gather list used to build the above */ | |
523 | struct scatterlist *sg_table; | |
524 | int sg_max_nents; /* Maximum number of entries in it */ | |
525 | int sg_nents; /* Current number of entries in it */ | |
526 | int sg_dma_direction; /* dma transfer direction */ | |
527 | ||
528 | /* data phase of the active command (currently only valid for PIO/DMA) */ | |
529 | int data_phase; | |
530 | ||
531 | unsigned int nsect; | |
532 | unsigned int nleft; | |
55c16a70 | 533 | struct scatterlist *cursg; |
1da177e4 LT |
534 | unsigned int cursg_ofs; |
535 | ||
1da177e4 LT |
536 | int rqsize; /* max sectors per request */ |
537 | int irq; /* our irq number */ | |
538 | ||
1da177e4 | 539 | unsigned long dma_base; /* base addr for dma ports */ |
1da177e4 | 540 | |
1da177e4 LT |
541 | unsigned long config_data; /* for use by chipset-specific code */ |
542 | unsigned long select_data; /* for use by chipset-specific code */ | |
543 | ||
020e322d SS |
544 | unsigned long extra_base; /* extra addr for dma ports */ |
545 | unsigned extra_ports; /* number of extra dma ports */ | |
546 | ||
1da177e4 | 547 | unsigned present : 1; /* this interface exists */ |
1da177e4 LT |
548 | unsigned serialized : 1; /* serialized all channel operation */ |
549 | unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */ | |
1da177e4 LT |
550 | unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ |
551 | ||
f74c9141 BZ |
552 | struct device gendev; |
553 | struct device *portdev; | |
554 | ||
f36d4024 | 555 | struct completion gendev_rel_comp; /* To deal with device release() */ |
1da177e4 LT |
556 | |
557 | void *hwif_data; /* extra hwif data */ | |
558 | ||
559 | unsigned dma; | |
e3a59b4d HR |
560 | |
561 | #ifdef CONFIG_BLK_DEV_IDEACPI | |
562 | struct ide_acpi_hwif_link *acpidata; | |
563 | #endif | |
22fc6ecc | 564 | } ____cacheline_internodealigned_in_smp ide_hwif_t; |
1da177e4 | 565 | |
48c3c107 BZ |
566 | struct ide_host { |
567 | ide_hwif_t *ports[MAX_HWIFS]; | |
568 | unsigned int n_ports; | |
569 | }; | |
570 | ||
1da177e4 LT |
571 | /* |
572 | * internal ide interrupt handler type | |
573 | */ | |
1da177e4 LT |
574 | typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
575 | typedef int (ide_expiry_t)(ide_drive_t *); | |
576 | ||
0eea6458 | 577 | /* used by ide-cd, ide-floppy, etc. */ |
9567b349 | 578 | typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned); |
0eea6458 | 579 | |
1da177e4 LT |
580 | typedef struct hwgroup_s { |
581 | /* irq handler, if active */ | |
582 | ide_startstop_t (*handler)(ide_drive_t *); | |
a6fbb1c8 | 583 | |
1da177e4 LT |
584 | /* BOOL: protects all fields below */ |
585 | volatile int busy; | |
586 | /* BOOL: wake us up on timer expiry */ | |
587 | unsigned int sleeping : 1; | |
588 | /* BOOL: polling active & poll_timeout field valid */ | |
589 | unsigned int polling : 1; | |
913759ac | 590 | |
1da177e4 LT |
591 | /* current drive */ |
592 | ide_drive_t *drive; | |
593 | /* ptr to current hwif in linked-list */ | |
594 | ide_hwif_t *hwif; | |
595 | ||
1da177e4 LT |
596 | /* current request */ |
597 | struct request *rq; | |
a6fbb1c8 | 598 | |
1da177e4 LT |
599 | /* failsafe timer */ |
600 | struct timer_list timer; | |
1da177e4 LT |
601 | /* timeout value during long polls */ |
602 | unsigned long poll_timeout; | |
603 | /* queried upon timeouts */ | |
604 | int (*expiry)(ide_drive_t *); | |
a6fbb1c8 | 605 | |
23450319 SS |
606 | int req_gen; |
607 | int req_gen_timer; | |
1da177e4 LT |
608 | } ide_hwgroup_t; |
609 | ||
7662d046 BZ |
610 | typedef struct ide_driver_s ide_driver_t; |
611 | ||
f9383c42 | 612 | extern struct mutex ide_setting_mtx; |
1da177e4 | 613 | |
7662d046 BZ |
614 | int set_io_32bit(ide_drive_t *, int); |
615 | int set_pio_mode(ide_drive_t *, int); | |
616 | int set_using_dma(ide_drive_t *, int); | |
617 | ||
eaec3e7d BP |
618 | /* ATAPI packet command flags */ |
619 | enum { | |
620 | /* set when an error is considered normal - no retry (ide-tape) */ | |
621 | PC_FLAG_ABORT = (1 << 0), | |
622 | PC_FLAG_SUPPRESS_ERROR = (1 << 1), | |
623 | PC_FLAG_WAIT_FOR_DSC = (1 << 2), | |
624 | PC_FLAG_DMA_OK = (1 << 3), | |
5e331095 BZ |
625 | PC_FLAG_DMA_IN_PROGRESS = (1 << 4), |
626 | PC_FLAG_DMA_ERROR = (1 << 5), | |
627 | PC_FLAG_WRITING = (1 << 6), | |
eaec3e7d | 628 | /* command timed out */ |
5e331095 | 629 | PC_FLAG_TIMEDOUT = (1 << 7), |
5d41893c | 630 | PC_FLAG_ZIP_DRIVE = (1 << 8), |
28c7214b | 631 | PC_FLAG_DRQ_INTERRUPT = (1 << 9), |
eaec3e7d BP |
632 | }; |
633 | ||
8303b46e BP |
634 | struct ide_atapi_pc { |
635 | /* actual packet bytes */ | |
636 | u8 c[12]; | |
637 | /* incremented on each retry */ | |
638 | int retries; | |
639 | int error; | |
640 | ||
641 | /* bytes to transfer */ | |
642 | int req_xfer; | |
643 | /* bytes actually transferred */ | |
644 | int xferred; | |
645 | ||
646 | /* data buffer */ | |
647 | u8 *buf; | |
648 | /* current buffer position */ | |
649 | u8 *cur_pos; | |
650 | int buf_size; | |
651 | /* missing/available data on the current buffer */ | |
652 | int b_count; | |
653 | ||
654 | /* the corresponding request */ | |
655 | struct request *rq; | |
656 | ||
657 | unsigned long flags; | |
658 | ||
659 | /* | |
660 | * those are more or less driver-specific and some of them are subject | |
661 | * to change/removal later. | |
662 | */ | |
663 | u8 pc_buf[256]; | |
1b06e92a | 664 | |
8303b46e BP |
665 | /* idetape only */ |
666 | struct idetape_bh *bh; | |
667 | char *b_data; | |
668 | ||
669 | /* idescsi only for now */ | |
670 | struct scatterlist *sg; | |
671 | unsigned int sg_cnt; | |
672 | ||
673 | struct scsi_cmnd *scsi_cmd; | |
674 | void (*done) (struct scsi_cmnd *); | |
675 | ||
676 | unsigned long timeout; | |
677 | }; | |
678 | ||
7662d046 | 679 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
680 | /* |
681 | * configurable drive settings | |
682 | */ | |
683 | ||
684 | #define TYPE_INT 0 | |
1497943e BZ |
685 | #define TYPE_BYTE 1 |
686 | #define TYPE_SHORT 2 | |
1da177e4 LT |
687 | |
688 | #define SETTING_READ (1 << 0) | |
689 | #define SETTING_WRITE (1 << 1) | |
690 | #define SETTING_RW (SETTING_READ | SETTING_WRITE) | |
691 | ||
692 | typedef int (ide_procset_t)(ide_drive_t *, int); | |
693 | typedef struct ide_settings_s { | |
694 | char *name; | |
695 | int rw; | |
1da177e4 LT |
696 | int data_type; |
697 | int min; | |
698 | int max; | |
699 | int mul_factor; | |
700 | int div_factor; | |
701 | void *data; | |
702 | ide_procset_t *set; | |
703 | int auto_remove; | |
704 | struct ide_settings_s *next; | |
705 | } ide_settings_t; | |
706 | ||
1497943e | 707 | int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set); |
1da177e4 LT |
708 | |
709 | /* | |
710 | * /proc/ide interface | |
711 | */ | |
712 | typedef struct { | |
713 | const char *name; | |
714 | mode_t mode; | |
715 | read_proc_t *read_proc; | |
716 | write_proc_t *write_proc; | |
717 | } ide_proc_entry_t; | |
718 | ||
ecfd80e4 BZ |
719 | void proc_ide_create(void); |
720 | void proc_ide_destroy(void); | |
5cbf79cd | 721 | void ide_proc_register_port(ide_hwif_t *); |
d9270a3f | 722 | void ide_proc_port_register_devices(ide_hwif_t *); |
5b0c4b30 | 723 | void ide_proc_unregister_device(ide_drive_t *); |
5cbf79cd | 724 | void ide_proc_unregister_port(ide_hwif_t *); |
7662d046 BZ |
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 | ||
1da177e4 LT |
730 | read_proc_t proc_ide_read_capacity; |
731 | read_proc_t proc_ide_read_geometry; | |
732 | ||
1da177e4 LT |
733 | /* |
734 | * Standard exit stuff: | |
735 | */ | |
736 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \ | |
737 | { \ | |
738 | len -= off; \ | |
739 | if (len < count) { \ | |
740 | *eof = 1; \ | |
741 | if (len <= 0) \ | |
742 | return 0; \ | |
743 | } else \ | |
744 | len = count; \ | |
745 | *start = page + off; \ | |
746 | return len; \ | |
747 | } | |
748 | #else | |
ecfd80e4 BZ |
749 | static inline void proc_ide_create(void) { ; } |
750 | static inline void proc_ide_destroy(void) { ; } | |
5cbf79cd | 751 | static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } |
d9270a3f | 752 | static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } |
5b0c4b30 | 753 | static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } |
5cbf79cd | 754 | static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } |
7662d046 BZ |
755 | static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } |
756 | static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } | |
757 | static inline void ide_add_generic_settings(ide_drive_t *drive) { ; } | |
1da177e4 LT |
758 | #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; |
759 | #endif | |
760 | ||
761 | /* | |
762 | * Power Management step value (rq->pm->pm_step). | |
763 | * | |
764 | * The step value starts at 0 (ide_pm_state_start_suspend) for a | |
765 | * suspend operation or 1000 (ide_pm_state_start_resume) for a | |
766 | * resume operation. | |
767 | * | |
768 | * For each step, the core calls the subdriver start_power_step() first. | |
769 | * This can return: | |
770 | * - ide_stopped : In this case, the core calls us back again unless | |
771 | * step have been set to ide_power_state_completed. | |
772 | * - ide_started : In this case, the channel is left busy until an | |
773 | * async event (interrupt) occurs. | |
774 | * Typically, start_power_step() will issue a taskfile request with | |
775 | * do_rw_taskfile(). | |
776 | * | |
777 | * Upon reception of the interrupt, the core will call complete_power_step() | |
778 | * with the error code if any. This routine should update the step value | |
779 | * and return. It should not start a new request. The core will call | |
780 | * start_power_step for the new step value, unless step have been set to | |
781 | * ide_power_state_completed. | |
782 | * | |
783 | * Subdrivers are expected to define their own additional power | |
784 | * steps from 1..999 for suspend and from 1001..1999 for resume, | |
785 | * other values are reserved for future use. | |
786 | */ | |
787 | ||
788 | enum { | |
789 | ide_pm_state_completed = -1, | |
790 | ide_pm_state_start_suspend = 0, | |
791 | ide_pm_state_start_resume = 1000, | |
792 | }; | |
793 | ||
794 | /* | |
795 | * Subdrivers support. | |
4ef3b8f4 LR |
796 | * |
797 | * The gendriver.owner field should be set to the module owner of this driver. | |
798 | * The gendriver.name field should be set to the name of this driver | |
1da177e4 | 799 | */ |
7662d046 | 800 | struct ide_driver_s { |
1da177e4 LT |
801 | const char *version; |
802 | u8 media; | |
1da177e4 | 803 | unsigned supports_dsc_overlap : 1; |
1da177e4 LT |
804 | ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); |
805 | int (*end_request)(ide_drive_t *, int, int); | |
806 | ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8); | |
1da177e4 | 807 | struct device_driver gen_driver; |
4031bbe4 RK |
808 | int (*probe)(ide_drive_t *); |
809 | void (*remove)(ide_drive_t *); | |
0d2157f7 | 810 | void (*resume)(ide_drive_t *); |
4031bbe4 | 811 | void (*shutdown)(ide_drive_t *); |
7662d046 BZ |
812 | #ifdef CONFIG_IDE_PROC_FS |
813 | ide_proc_entry_t *proc; | |
814 | #endif | |
815 | }; | |
1da177e4 | 816 | |
4031bbe4 RK |
817 | #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver) |
818 | ||
1da177e4 LT |
819 | int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long); |
820 | ||
ebae41a5 BZ |
821 | extern int ide_vlb_clk; |
822 | extern int ide_pci_clk; | |
823 | ||
1da177e4 | 824 | extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs); |
dbe217af AC |
825 | int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq, |
826 | int uptodate, int nr_sectors); | |
1da177e4 | 827 | |
1da177e4 LT |
828 | extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry); |
829 | ||
cd2a2d96 BZ |
830 | void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int, |
831 | ide_expiry_t *); | |
1da177e4 | 832 | |
1fc14258 BZ |
833 | void ide_execute_pkt_cmd(ide_drive_t *); |
834 | ||
9f87abe8 BZ |
835 | void ide_pad_transfer(ide_drive_t *, int, int); |
836 | ||
1da177e4 LT |
837 | ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); |
838 | ||
1da177e4 LT |
839 | ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); |
840 | ||
1da177e4 | 841 | extern void ide_fix_driveid(struct hd_driveid *); |
01745112 | 842 | |
1da177e4 LT |
843 | extern void ide_fixstring(u8 *, const int, const int); |
844 | ||
74af21cf | 845 | int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
1da177e4 | 846 | |
1da177e4 LT |
847 | extern ide_startstop_t ide_do_reset (ide_drive_t *); |
848 | ||
63f5abb0 | 849 | extern void ide_do_drive_cmd(ide_drive_t *, struct request *); |
1da177e4 | 850 | |
1da177e4 LT |
851 | extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); |
852 | ||
9e42237f BZ |
853 | enum { |
854 | IDE_TFLAG_LBA48 = (1 << 0), | |
74095a91 BZ |
855 | IDE_TFLAG_FLAGGED = (1 << 2), |
856 | IDE_TFLAG_OUT_DATA = (1 << 3), | |
857 | IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4), | |
858 | IDE_TFLAG_OUT_HOB_NSECT = (1 << 5), | |
859 | IDE_TFLAG_OUT_HOB_LBAL = (1 << 6), | |
860 | IDE_TFLAG_OUT_HOB_LBAM = (1 << 7), | |
861 | IDE_TFLAG_OUT_HOB_LBAH = (1 << 8), | |
862 | IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE | | |
863 | IDE_TFLAG_OUT_HOB_NSECT | | |
864 | IDE_TFLAG_OUT_HOB_LBAL | | |
865 | IDE_TFLAG_OUT_HOB_LBAM | | |
866 | IDE_TFLAG_OUT_HOB_LBAH, | |
867 | IDE_TFLAG_OUT_FEATURE = (1 << 9), | |
868 | IDE_TFLAG_OUT_NSECT = (1 << 10), | |
869 | IDE_TFLAG_OUT_LBAL = (1 << 11), | |
870 | IDE_TFLAG_OUT_LBAM = (1 << 12), | |
871 | IDE_TFLAG_OUT_LBAH = (1 << 13), | |
872 | IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE | | |
873 | IDE_TFLAG_OUT_NSECT | | |
874 | IDE_TFLAG_OUT_LBAL | | |
875 | IDE_TFLAG_OUT_LBAM | | |
876 | IDE_TFLAG_OUT_LBAH, | |
807e35d6 | 877 | IDE_TFLAG_OUT_DEVICE = (1 << 14), |
ac026ff2 | 878 | IDE_TFLAG_WRITE = (1 << 15), |
866e2ec9 BZ |
879 | IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16), |
880 | IDE_TFLAG_IN_DATA = (1 << 17), | |
57d7366b | 881 | IDE_TFLAG_CUSTOM_HANDLER = (1 << 18), |
f6e29e35 | 882 | IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19), |
c2b57cdc BZ |
883 | IDE_TFLAG_IN_HOB_FEATURE = (1 << 20), |
884 | IDE_TFLAG_IN_HOB_NSECT = (1 << 21), | |
885 | IDE_TFLAG_IN_HOB_LBAL = (1 << 22), | |
886 | IDE_TFLAG_IN_HOB_LBAM = (1 << 23), | |
887 | IDE_TFLAG_IN_HOB_LBAH = (1 << 24), | |
888 | IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL | | |
889 | IDE_TFLAG_IN_HOB_LBAM | | |
890 | IDE_TFLAG_IN_HOB_LBAH, | |
891 | IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE | | |
892 | IDE_TFLAG_IN_HOB_NSECT | | |
893 | IDE_TFLAG_IN_HOB_LBA, | |
92eb4380 | 894 | IDE_TFLAG_IN_FEATURE = (1 << 1), |
c2b57cdc BZ |
895 | IDE_TFLAG_IN_NSECT = (1 << 25), |
896 | IDE_TFLAG_IN_LBAL = (1 << 26), | |
897 | IDE_TFLAG_IN_LBAM = (1 << 27), | |
898 | IDE_TFLAG_IN_LBAH = (1 << 28), | |
899 | IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL | | |
900 | IDE_TFLAG_IN_LBAM | | |
901 | IDE_TFLAG_IN_LBAH, | |
902 | IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT | | |
903 | IDE_TFLAG_IN_LBA, | |
904 | IDE_TFLAG_IN_DEVICE = (1 << 29), | |
657cc1a8 BZ |
905 | IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB | |
906 | IDE_TFLAG_IN_HOB, | |
907 | IDE_TFLAG_TF = IDE_TFLAG_OUT_TF | | |
908 | IDE_TFLAG_IN_TF, | |
909 | IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE | | |
910 | IDE_TFLAG_IN_DEVICE, | |
35cf2b94 TH |
911 | /* force 16-bit I/O operations */ |
912 | IDE_TFLAG_IO_16BIT = (1 << 30), | |
395d8ef5 BZ |
913 | /* ide_task_t was allocated using kmalloc() */ |
914 | IDE_TFLAG_DYN = (1 << 31), | |
9e42237f BZ |
915 | }; |
916 | ||
650d841d BZ |
917 | struct ide_taskfile { |
918 | u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */ | |
919 | ||
920 | u8 hob_feature; /* 1-5: additional data to support LBA48 */ | |
921 | u8 hob_nsect; | |
922 | u8 hob_lbal; | |
923 | u8 hob_lbam; | |
924 | u8 hob_lbah; | |
925 | ||
926 | u8 data; /* 6: low data byte (for TASKFILE IOCTL) */ | |
927 | ||
928 | union { /* 7: */ | |
929 | u8 error; /* read: error */ | |
930 | u8 feature; /* write: feature */ | |
931 | }; | |
932 | ||
933 | u8 nsect; /* 8: number of sectors */ | |
934 | u8 lbal; /* 9: LBA low */ | |
935 | u8 lbam; /* 10: LBA mid */ | |
936 | u8 lbah; /* 11: LBA high */ | |
937 | ||
938 | u8 device; /* 12: device select */ | |
939 | ||
940 | union { /* 13: */ | |
941 | u8 status; /* read: status */ | |
942 | u8 command; /* write: command */ | |
943 | }; | |
944 | }; | |
945 | ||
1da177e4 | 946 | typedef struct ide_task_s { |
650d841d BZ |
947 | union { |
948 | struct ide_taskfile tf; | |
949 | u8 tf_array[14]; | |
950 | }; | |
866e2ec9 | 951 | u32 tf_flags; |
1da177e4 | 952 | int data_phase; |
1da177e4 LT |
953 | struct request *rq; /* copy of request */ |
954 | void *special; /* valid_t generally */ | |
955 | } ide_task_t; | |
956 | ||
089c5c7e | 957 | void ide_tf_dump(const char *, struct ide_taskfile *); |
1da177e4 | 958 | |
374e042c BZ |
959 | void ide_exec_command(ide_hwif_t *, u8); |
960 | u8 ide_read_status(ide_hwif_t *); | |
961 | u8 ide_read_altstatus(ide_hwif_t *); | |
962 | u8 ide_read_sff_dma_status(ide_hwif_t *); | |
963 | ||
964 | void ide_set_irq(ide_hwif_t *, int); | |
965 | ||
966 | void ide_tf_load(ide_drive_t *, ide_task_t *); | |
967 | void ide_tf_read(ide_drive_t *, ide_task_t *); | |
968 | ||
969 | void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int); | |
970 | void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int); | |
971 | ||
1da177e4 | 972 | extern void SELECT_DRIVE(ide_drive_t *); |
ed4af48f | 973 | void SELECT_MASK(ide_drive_t *, int); |
1da177e4 | 974 | |
92eb4380 | 975 | u8 ide_read_error(ide_drive_t *); |
1823649b | 976 | void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); |
92eb4380 | 977 | |
1da177e4 | 978 | extern int drive_is_ready(ide_drive_t *); |
1da177e4 | 979 | |
2fc57388 BZ |
980 | void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8); |
981 | ||
646c0cb6 BZ |
982 | ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc, |
983 | ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry, | |
984 | void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *), | |
985 | void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *), | |
986 | void (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int, | |
987 | int)); | |
594c16d8 BZ |
988 | ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *, |
989 | ide_handler_t *, unsigned int, ide_expiry_t *); | |
6bf1641c BZ |
990 | ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *, |
991 | ide_handler_t *, unsigned int, ide_expiry_t *); | |
594c16d8 | 992 | |
f6e29e35 | 993 | ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); |
1da177e4 | 994 | |
4d7a984b TH |
995 | void task_end_request(ide_drive_t *, struct request *, u8); |
996 | ||
ac026ff2 | 997 | int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16); |
9a3c49be BZ |
998 | int ide_no_data_taskfile(ide_drive_t *, ide_task_t *); |
999 | ||
1da177e4 LT |
1000 | int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long); |
1001 | int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long); | |
1002 | int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long); | |
1003 | ||
1da177e4 | 1004 | extern int ide_driveid_update(ide_drive_t *); |
1da177e4 LT |
1005 | extern int ide_config_drive_speed(ide_drive_t *, u8); |
1006 | extern u8 eighty_ninty_three (ide_drive_t *); | |
1da177e4 LT |
1007 | extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
1008 | ||
1009 | extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); | |
1010 | ||
1da177e4 LT |
1011 | extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
1012 | ||
1013 | extern int ide_spin_wait_hwgroup(ide_drive_t *); | |
1014 | extern void ide_timer_expiry(unsigned long); | |
7d12e780 | 1015 | extern irqreturn_t ide_intr(int irq, void *dev_id); |
165125e1 | 1016 | extern void do_ide_request(struct request_queue *); |
1da177e4 LT |
1017 | |
1018 | void ide_init_disk(struct gendisk *, ide_drive_t *); | |
1019 | ||
6d208b39 | 1020 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
725522b5 GKH |
1021 | extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); |
1022 | #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) | |
6d208b39 BZ |
1023 | #else |
1024 | #define ide_pci_register_driver(d) pci_register_driver(d) | |
1025 | #endif | |
1026 | ||
c97c6aca | 1027 | void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, |
48c3c107 | 1028 | hw_regs_t *, hw_regs_t **); |
85620436 | 1029 | void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); |
1da177e4 | 1030 | |
8e882ba1 | 1031 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
b123f56e BZ |
1032 | int ide_pci_set_master(struct pci_dev *, const char *); |
1033 | unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); | |
81e8d5a3 | 1034 | extern const struct ide_dma_ops sff_dma_ops; |
ebb00fb5 | 1035 | int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); |
b123f56e | 1036 | int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); |
c413b9b9 | 1037 | #else |
b123f56e BZ |
1038 | static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, |
1039 | const struct ide_port_info *d) | |
1040 | { | |
1041 | return -EINVAL; | |
1042 | } | |
c413b9b9 BZ |
1043 | #endif |
1044 | ||
1da177e4 LT |
1045 | typedef struct ide_pci_enablebit_s { |
1046 | u8 reg; /* byte pci reg holding the enable-bit */ | |
1047 | u8 mask; /* mask to isolate the enable-bit */ | |
1048 | u8 val; /* value of masked reg when "enabled" */ | |
1049 | } ide_pci_enablebit_t; | |
1050 | ||
1051 | enum { | |
1052 | /* Uses ISA control ports not PCI ones. */ | |
a5d8c5c8 | 1053 | IDE_HFLAG_ISA_PORTS = (1 << 0), |
6a824c92 | 1054 | /* single port device */ |
a5d8c5c8 | 1055 | IDE_HFLAG_SINGLE = (1 << 1), |
6a824c92 BZ |
1056 | /* don't use legacy PIO blacklist */ |
1057 | IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), | |
e277f91f BZ |
1058 | /* set for the second port of QD65xx */ |
1059 | IDE_HFLAG_QD_2ND_PORT = (1 << 3), | |
26bcb879 BZ |
1060 | /* use PIO8/9 for prefetch off/on */ |
1061 | IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), | |
1062 | /* use PIO6/7 for fast-devsel off/on */ | |
1063 | IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), | |
1064 | /* use 100-102 and 200-202 PIO values to set DMA modes */ | |
1065 | IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), | |
aedea591 BZ |
1066 | /* |
1067 | * keep DMA setting when programming PIO mode, may be used only | |
1068 | * for hosts which have separate PIO and DMA timings (ie. PMAC) | |
1069 | */ | |
1070 | IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), | |
88b2b32b BZ |
1071 | /* program host for the transfer mode after programming device */ |
1072 | IDE_HFLAG_POST_SET_MODE = (1 << 8), | |
1073 | /* don't program host/device for the transfer mode ("smart" hosts) */ | |
1074 | IDE_HFLAG_NO_SET_MODE = (1 << 9), | |
0ae2e178 BZ |
1075 | /* trust BIOS for programming chipset/device for DMA */ |
1076 | IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), | |
cafa027b BZ |
1077 | /* host is CS5510/CS5520 */ |
1078 | IDE_HFLAG_CS5520 = (1 << 11), | |
33c1002e BZ |
1079 | /* ATAPI DMA is unsupported */ |
1080 | IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), | |
5e71d9c5 BZ |
1081 | /* set if host is a "non-bootable" controller */ |
1082 | IDE_HFLAG_NON_BOOTABLE = (1 << 13), | |
47b68788 BZ |
1083 | /* host doesn't support DMA */ |
1084 | IDE_HFLAG_NO_DMA = (1 << 14), | |
1085 | /* check if host is PCI IDE device before allowing DMA */ | |
1086 | IDE_HFLAG_NO_AUTODMA = (1 << 15), | |
c5dd43ec BZ |
1087 | /* host uses MMIO */ |
1088 | IDE_HFLAG_MMIO = (1 << 16), | |
238e4f14 BZ |
1089 | /* no LBA48 */ |
1090 | IDE_HFLAG_NO_LBA48 = (1 << 17), | |
1091 | /* no LBA48 DMA */ | |
1092 | IDE_HFLAG_NO_LBA48_DMA = (1 << 18), | |
ed67b923 BZ |
1093 | /* data FIFO is cleared by an error */ |
1094 | IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), | |
1c51361a BZ |
1095 | /* serialize ports */ |
1096 | IDE_HFLAG_SERIALIZE = (1 << 20), | |
3985ee3b BZ |
1097 | /* use legacy IRQs */ |
1098 | IDE_HFLAG_LEGACY_IRQS = (1 << 21), | |
8acf28c0 BZ |
1099 | /* force use of legacy IRQs */ |
1100 | IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22), | |
272a3709 BZ |
1101 | /* limit LBA48 requests to 256 sectors */ |
1102 | IDE_HFLAG_RQSIZE_256 = (1 << 23), | |
caea7602 BZ |
1103 | /* use 32-bit I/O ops */ |
1104 | IDE_HFLAG_IO_32BIT = (1 << 24), | |
1105 | /* unmask IRQs */ | |
1106 | IDE_HFLAG_UNMASK_IRQS = (1 << 25), | |
1fd18905 BZ |
1107 | /* serialize ports if DMA is possible (for sl82c105) */ |
1108 | IDE_HFLAG_SERIALIZE_DMA = (1 << 27), | |
8ac2b42a BZ |
1109 | /* force host out of "simplex" mode */ |
1110 | IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), | |
4166c199 BZ |
1111 | /* DSC overlap is unsupported */ |
1112 | IDE_HFLAG_NO_DSC = (1 << 29), | |
807b90d0 BZ |
1113 | /* never use 32-bit I/O ops */ |
1114 | IDE_HFLAG_NO_IO_32BIT = (1 << 30), | |
1115 | /* never unmask IRQs */ | |
1116 | IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), | |
1da177e4 LT |
1117 | }; |
1118 | ||
7cab14a7 | 1119 | #ifdef CONFIG_BLK_DEV_OFFBOARD |
7cab14a7 | 1120 | # define IDE_HFLAG_OFF_BOARD 0 |
5e71d9c5 BZ |
1121 | #else |
1122 | # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE | |
7cab14a7 BZ |
1123 | #endif |
1124 | ||
039788e1 | 1125 | struct ide_port_info { |
1da177e4 | 1126 | char *name; |
1da177e4 LT |
1127 | unsigned int (*init_chipset)(struct pci_dev *, const char *); |
1128 | void (*init_iops)(ide_hwif_t *); | |
1129 | void (*init_hwif)(ide_hwif_t *); | |
b123f56e BZ |
1130 | int (*init_dma)(ide_hwif_t *, |
1131 | const struct ide_port_info *); | |
ac95beed | 1132 | |
374e042c | 1133 | const struct ide_tp_ops *tp_ops; |
ac95beed | 1134 | const struct ide_port_ops *port_ops; |
f37afdac | 1135 | const struct ide_dma_ops *dma_ops; |
ac95beed | 1136 | |
1da177e4 | 1137 | ide_pci_enablebit_t enablebits[2]; |
528a572d | 1138 | hwif_chipset_t chipset; |
9ffcf364 | 1139 | u32 host_flags; |
4099d143 | 1140 | u8 pio_mask; |
5f8b6c34 BZ |
1141 | u8 swdma_mask; |
1142 | u8 mwdma_mask; | |
18137207 | 1143 | u8 udma_mask; |
039788e1 | 1144 | }; |
1da177e4 | 1145 | |
85620436 BZ |
1146 | int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *); |
1147 | int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *); | |
1da177e4 LT |
1148 | |
1149 | void ide_map_sg(ide_drive_t *, struct request *); | |
1150 | void ide_init_sg_cmd(ide_drive_t *, struct request *); | |
1151 | ||
1152 | #define BAD_DMA_DRIVE 0 | |
1153 | #define GOOD_DMA_DRIVE 1 | |
1154 | ||
65e5f2e3 JC |
1155 | struct drive_list_entry { |
1156 | const char *id_model; | |
1157 | const char *id_firmware; | |
1158 | }; | |
1159 | ||
1160 | int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *); | |
a5b7e70d BZ |
1161 | |
1162 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
1da177e4 | 1163 | int __ide_dma_bad_drive(ide_drive_t *); |
3ab7efe8 | 1164 | int ide_id_dma_bug(ide_drive_t *); |
7670df73 BZ |
1165 | |
1166 | u8 ide_find_dma_mode(ide_drive_t *, u8); | |
1167 | ||
1168 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) | |
1169 | { | |
1170 | return ide_find_dma_mode(drive, XFER_UDMA_6); | |
1171 | } | |
1172 | ||
4a546e04 | 1173 | void ide_dma_off_quietly(ide_drive_t *); |
7469aaf6 | 1174 | void ide_dma_off(ide_drive_t *); |
4a546e04 | 1175 | void ide_dma_on(ide_drive_t *); |
3608b5d7 | 1176 | int ide_set_dma(ide_drive_t *); |
578cfa0d | 1177 | void ide_check_dma_crc(ide_drive_t *); |
1da177e4 LT |
1178 | ide_startstop_t ide_dma_intr(ide_drive_t *); |
1179 | ||
062f9f02 BZ |
1180 | int ide_build_sglist(ide_drive_t *, struct request *); |
1181 | void ide_destroy_dmatable(ide_drive_t *); | |
1182 | ||
8e882ba1 | 1183 | #ifdef CONFIG_BLK_DEV_IDEDMA_SFF |
1da177e4 | 1184 | extern int ide_build_dmatable(ide_drive_t *, struct request *); |
b8e73fba BZ |
1185 | int ide_allocate_dma_engine(ide_hwif_t *); |
1186 | void ide_release_dma_engine(ide_hwif_t *); | |
1da177e4 | 1187 | |
15ce926a | 1188 | void ide_dma_host_set(ide_drive_t *, int); |
1da177e4 | 1189 | extern int ide_dma_setup(ide_drive_t *); |
f37afdac | 1190 | void ide_dma_exec_cmd(ide_drive_t *, u8); |
1da177e4 LT |
1191 | extern void ide_dma_start(ide_drive_t *); |
1192 | extern int __ide_dma_end(ide_drive_t *); | |
f37afdac | 1193 | int ide_dma_test_irq(ide_drive_t *); |
841d2a9b | 1194 | extern void ide_dma_lost_irq(ide_drive_t *); |
c283f5db | 1195 | extern void ide_dma_timeout(ide_drive_t *); |
8e882ba1 | 1196 | #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ |
1da177e4 LT |
1197 | |
1198 | #else | |
3ab7efe8 | 1199 | static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; } |
7670df73 | 1200 | static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } |
2d5eaa6d | 1201 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } |
4a546e04 | 1202 | static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } |
7469aaf6 | 1203 | static inline void ide_dma_off(ide_drive_t *drive) { ; } |
4a546e04 | 1204 | static inline void ide_dma_on(ide_drive_t *drive) { ; } |
1da177e4 | 1205 | static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
3608b5d7 | 1206 | static inline int ide_set_dma(ide_drive_t *drive) { return 1; } |
578cfa0d | 1207 | static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } |
1da177e4 LT |
1208 | #endif /* CONFIG_BLK_DEV_IDEDMA */ |
1209 | ||
8e882ba1 | 1210 | #ifndef CONFIG_BLK_DEV_IDEDMA_SFF |
0d1bad21 | 1211 | static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } |
1da177e4 LT |
1212 | #endif |
1213 | ||
e3a59b4d HR |
1214 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1215 | extern int ide_acpi_exec_tfs(ide_drive_t *drive); | |
1216 | extern void ide_acpi_get_timing(ide_hwif_t *hwif); | |
1217 | extern void ide_acpi_push_timing(ide_hwif_t *hwif); | |
1218 | extern void ide_acpi_init(ide_hwif_t *hwif); | |
eafd88a3 | 1219 | void ide_acpi_port_init_devices(ide_hwif_t *); |
5e32132b | 1220 | extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); |
e3a59b4d HR |
1221 | #else |
1222 | static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } | |
1223 | static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } | |
1224 | static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } | |
1225 | static inline void ide_acpi_init(ide_hwif_t *hwif) { ; } | |
eafd88a3 | 1226 | static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } |
5e32132b | 1227 | static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} |
e3a59b4d HR |
1228 | #endif |
1229 | ||
fbd13088 | 1230 | void ide_remove_port_from_hwgroup(ide_hwif_t *); |
387750c3 | 1231 | void ide_unregister(ide_hwif_t *); |
1da177e4 LT |
1232 | |
1233 | void ide_register_region(struct gendisk *); | |
1234 | void ide_unregister_region(struct gendisk *); | |
1235 | ||
f01393e4 | 1236 | void ide_undecoded_slave(ide_drive_t *); |
1da177e4 | 1237 | |
9fd91d95 BZ |
1238 | void ide_port_apply_params(ide_hwif_t *); |
1239 | ||
48c3c107 BZ |
1240 | struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **); |
1241 | struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **); | |
8a69580e | 1242 | void ide_host_free(struct ide_host *); |
48c3c107 BZ |
1243 | int ide_host_register(struct ide_host *, const struct ide_port_info *, |
1244 | hw_regs_t **); | |
6f904d01 BZ |
1245 | int ide_host_add(const struct ide_port_info *, hw_regs_t **, |
1246 | struct ide_host **); | |
48c3c107 | 1247 | void ide_host_remove(struct ide_host *); |
0bfeee7d | 1248 | int ide_legacy_device_add(const struct ide_port_info *, unsigned long); |
2dde7861 BZ |
1249 | void ide_port_unregister_devices(ide_hwif_t *); |
1250 | void ide_port_scan(ide_hwif_t *); | |
1da177e4 LT |
1251 | |
1252 | static inline void *ide_get_hwifdata (ide_hwif_t * hwif) | |
1253 | { | |
1254 | return hwif->hwif_data; | |
1255 | } | |
1256 | ||
1257 | static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) | |
1258 | { | |
1259 | hwif->hwif_data = data; | |
1260 | } | |
1261 | ||
3ab7efe8 | 1262 | const char *ide_xfer_verbose(u8 mode); |
1da177e4 LT |
1263 | extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
1264 | extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate); | |
1265 | ||
2229833c BZ |
1266 | static inline int ide_dev_has_iordy(struct hd_driveid *id) |
1267 | { | |
1268 | return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0; | |
1269 | } | |
1270 | ||
6c3c22f3 SS |
1271 | static inline int ide_dev_is_sata(struct hd_driveid *id) |
1272 | { | |
1273 | /* | |
1274 | * See if word 93 is 0 AND drive is at least ATA-5 compatible | |
1275 | * verifying that word 80 by casting it to a signed type -- | |
1276 | * this trick allows us to filter out the reserved values of | |
1277 | * 0x0000 and 0xffff along with the earlier ATA revisions... | |
1278 | */ | |
1279 | if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020) | |
1280 | return 1; | |
1281 | return 0; | |
1282 | } | |
1283 | ||
a501633c | 1284 | u64 ide_get_lba_addr(struct ide_taskfile *, int); |
1da177e4 LT |
1285 | u8 ide_dump_status(ide_drive_t *, const char *, u8); |
1286 | ||
3be53f3f BZ |
1287 | struct ide_timing { |
1288 | u8 mode; | |
1289 | u8 setup; /* t1 */ | |
1290 | u16 act8b; /* t2 for 8-bit io */ | |
1291 | u16 rec8b; /* t2i for 8-bit io */ | |
1292 | u16 cyc8b; /* t0 for 8-bit io */ | |
1293 | u16 active; /* t2 or tD */ | |
1294 | u16 recover; /* t2i or tK */ | |
1295 | u16 cycle; /* t0 */ | |
1296 | u16 udma; /* t2CYCTYP/2 */ | |
1297 | }; | |
1298 | ||
1299 | enum { | |
1300 | IDE_TIMING_SETUP = (1 << 0), | |
1301 | IDE_TIMING_ACT8B = (1 << 1), | |
1302 | IDE_TIMING_REC8B = (1 << 2), | |
1303 | IDE_TIMING_CYC8B = (1 << 3), | |
1304 | IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | | |
1305 | IDE_TIMING_CYC8B, | |
1306 | IDE_TIMING_ACTIVE = (1 << 4), | |
1307 | IDE_TIMING_RECOVER = (1 << 5), | |
1308 | IDE_TIMING_CYCLE = (1 << 6), | |
1309 | IDE_TIMING_UDMA = (1 << 7), | |
1310 | IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | | |
1311 | IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | | |
1312 | IDE_TIMING_CYCLE | IDE_TIMING_UDMA, | |
1313 | }; | |
1314 | ||
f06ab340 | 1315 | struct ide_timing *ide_timing_find_mode(u8); |
c9d6c1a2 | 1316 | u16 ide_pio_cycle_time(ide_drive_t *, u8); |
f06ab340 BZ |
1317 | void ide_timing_merge(struct ide_timing *, struct ide_timing *, |
1318 | struct ide_timing *, unsigned int); | |
1319 | int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); | |
1320 | ||
9ad54093 BZ |
1321 | int ide_scan_pio_blacklist(char *); |
1322 | ||
2134758d | 1323 | u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8); |
1da177e4 | 1324 | |
88b2b32b BZ |
1325 | int ide_set_pio_mode(ide_drive_t *, u8); |
1326 | int ide_set_dma_mode(ide_drive_t *, u8); | |
1327 | ||
26bcb879 BZ |
1328 | void ide_set_pio(ide_drive_t *, u8); |
1329 | ||
1330 | static inline void ide_set_max_pio(ide_drive_t *drive) | |
1331 | { | |
1332 | ide_set_pio(drive, 255); | |
1333 | } | |
1da177e4 LT |
1334 | |
1335 | extern spinlock_t ide_lock; | |
ef29888e | 1336 | extern struct mutex ide_cfg_mtx; |
1da177e4 LT |
1337 | /* |
1338 | * Structure locking: | |
1339 | * | |
ef29888e | 1340 | * ide_cfg_mtx and ide_lock together protect changes to |
1da177e4 LT |
1341 | * ide_hwif_t->{next,hwgroup} |
1342 | * ide_drive_t->next | |
1343 | * | |
1344 | * ide_hwgroup_t->busy: ide_lock | |
1345 | * ide_hwgroup_t->hwif: ide_lock | |
1346 | * ide_hwif_t->mate: constant, no locking | |
1347 | * ide_drive_t->hwif: constant, no locking | |
1348 | */ | |
1349 | ||
366c7f55 | 1350 | #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0) |
1da177e4 LT |
1351 | |
1352 | extern struct bus_type ide_bus_type; | |
f74c9141 | 1353 | extern struct class *ide_port_class; |
1da177e4 LT |
1354 | |
1355 | /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */ | |
1356 | #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000) | |
1357 | ||
1358 | /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */ | |
1359 | #define ide_id_has_flush_cache_ext(id) \ | |
1360 | (((id)->cfs_enable_2 & 0x2400) == 0x2400) | |
1361 | ||
7b9f25b5 BZ |
1362 | static inline void ide_dump_identify(u8 *id) |
1363 | { | |
1364 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); | |
1365 | } | |
1366 | ||
86b37860 CL |
1367 | static inline int hwif_to_node(ide_hwif_t *hwif) |
1368 | { | |
36501650 | 1369 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1f07e988 | 1370 | return hwif->dev ? pcibus_to_node(dev->bus) : -1; |
86b37860 CL |
1371 | } |
1372 | ||
1b678347 BH |
1373 | static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive) |
1374 | { | |
1375 | ide_hwif_t *hwif = HWIF(drive); | |
1376 | ||
1377 | return &hwif->drives[(drive->dn ^ 1) & 1]; | |
1378 | } | |
1da177e4 | 1379 | #endif /* _IDE_H */ |