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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/ata.h> |
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> |
19 | #include <linux/completion.h> |
20 | #include <linux/pm.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/mutex.h> |
28 | |
29 | /* for request_sense */ |
30 | #include <linux/cdrom.h> |
31 | |
32 | #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) |
33 | # define SUPPORT_VLB_SYNC 0 |
34 | #else |
35 | # define SUPPORT_VLB_SYNC 1 |
36 | #endif |
37 | |
38 | /* |
39 | * Probably not wise to fiddle with these |
40 | */ |
41 | #define IDE_DEFAULT_MAX_FAILURES 1 |
42 | #define ERROR_MAX 8 /* Max read/write errors per sector */ |
43 | #define ERROR_RESET 3 /* Reset controller every 4th retry */ |
44 | #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ |
45 | |
46 | /* Error codes returned in rq->errors to the higher part of the driver. */ |
47 | enum { |
48 | IDE_DRV_ERROR_GENERAL = 101, |
49 | IDE_DRV_ERROR_FILEMARK = 102, |
50 | IDE_DRV_ERROR_EOD = 103, |
51 | }; |
52 | |
53 | /* |
54 | * Definitions for accessing IDE controller registers |
55 | */ |
56 | #define IDE_NR_PORTS (10) |
57 | |
58 | struct ide_io_ports { |
59 | unsigned long data_addr; |
60 | |
61 | union { |
62 | unsigned long error_addr; /* read: error */ |
63 | unsigned long feature_addr; /* write: feature */ |
64 | }; |
65 | |
66 | unsigned long nsect_addr; |
67 | unsigned long lbal_addr; |
68 | unsigned long lbam_addr; |
69 | unsigned long lbah_addr; |
70 | |
71 | unsigned long device_addr; |
72 | |
73 | union { |
74 | unsigned long status_addr; /* read: status */ |
75 | unsigned long command_addr; /* write: command */ |
76 | }; |
77 | |
78 | unsigned long ctl_addr; |
79 | |
80 | unsigned long irq_addr; |
81 | }; |
82 | |
83 | #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) |
84 | |
85 | #define BAD_R_STAT (ATA_BUSY | ATA_ERR) |
86 | #define BAD_W_STAT (BAD_R_STAT | ATA_DF) |
87 | #define BAD_STAT (BAD_R_STAT | ATA_DRQ) |
88 | #define DRIVE_READY (ATA_DRDY | ATA_DSC) |
89 | |
90 | #define BAD_CRC (ATA_ABORTED | ATA_ICRC) |
91 | |
92 | #define SATA_NR_PORTS (3) /* 16 possible ?? */ |
93 | |
94 | #define SATA_STATUS_OFFSET (0) |
95 | #define SATA_ERROR_OFFSET (1) |
96 | #define SATA_CONTROL_OFFSET (2) |
97 | |
98 | /* |
99 | * Our Physical Region Descriptor (PRD) table should be large enough |
100 | * to handle the biggest I/O request we are likely to see. Since requests |
101 | * can have no more than 256 sectors, and since the typical blocksize is |
102 | * two or more sectors, we could get by with a limit of 128 entries here for |
103 | * the usual worst case. Most requests seem to include some contiguous blocks, |
104 | * further reducing the number of table entries required. |
105 | * |
106 | * The driver reverts to PIO mode for individual requests that exceed |
107 | * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling |
108 | * 100% of all crazy scenarios here is not necessary. |
109 | * |
110 | * As it turns out though, we must allocate a full 4KB page for this, |
111 | * so the two PRD tables (ide0 & ide1) will each get half of that, |
112 | * allowing each to have about 256 entries (8 bytes each) from this. |
113 | */ |
114 | #define PRD_BYTES 8 |
115 | #define PRD_ENTRIES 256 |
116 | |
117 | /* |
118 | * Some more useful definitions |
119 | */ |
120 | #define PARTN_BITS 6 /* number of minor dev bits for partitions */ |
121 | #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ |
122 | #define SECTOR_SIZE 512 |
123 | |
124 | /* |
125 | * Timeouts for various operations: |
126 | */ |
127 | enum { |
128 | /* spec allows up to 20ms */ |
129 | WAIT_DRQ = HZ / 10, /* 100ms */ |
130 | /* some laptops are very slow */ |
131 | WAIT_READY = 5 * HZ, /* 5s */ |
132 | /* should be less than 3ms (?), if all ATAPI CD is closed at boot */ |
133 | WAIT_PIDENTIFY = 10 * HZ, /* 10s */ |
134 | /* worst case when spinning up */ |
135 | WAIT_WORSTCASE = 30 * HZ, /* 30s */ |
136 | /* maximum wait for an IRQ to happen */ |
137 | WAIT_CMD = 10 * HZ, /* 10s */ |
138 | /* Some drives require a longer IRQ timeout. */ |
139 | WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */ |
140 | /* |
141 | * Some drives (for example, Seagate STT3401A Travan) require a very |
142 | * long timeout, because they don't return an interrupt or clear their |
143 | * BSY bit until after the command completes (even retension commands). |
144 | */ |
145 | WAIT_TAPE_CMD = 900 * HZ, /* 900s */ |
146 | /* minimum sleep time */ |
147 | WAIT_MIN_SLEEP = HZ / 50, /* 20ms */ |
148 | }; |
149 | |
150 | /* |
151 | * Op codes for special requests to be handled by ide_special_rq(). |
152 | * Values should be in the range of 0x20 to 0x3f. |
153 | */ |
154 | #define REQ_DRIVE_RESET 0x20 |
155 | #define REQ_DEVSET_EXEC 0x21 |
156 | #define REQ_PARK_HEADS 0x22 |
157 | #define REQ_UNPARK_HEADS 0x23 |
158 | |
159 | /* |
160 | * hwif_chipset_t is used to keep track of the specific hardware |
161 | * chipset used by each IDE interface, if known. |
162 | */ |
163 | enum { ide_unknown, ide_generic, ide_pci, |
164 | ide_cmd640, ide_dtc2278, ide_ali14xx, |
165 | ide_qd65xx, ide_umc8672, ide_ht6560b, |
166 | ide_4drives, ide_pmac, ide_acorn, |
167 | ide_au1xxx, ide_palm3710 |
168 | }; |
169 | |
170 | typedef u8 hwif_chipset_t; |
171 | |
172 | /* |
173 | * Structure to hold all information about the location of this port |
174 | */ |
175 | struct ide_hw { |
176 | union { |
177 | struct ide_io_ports io_ports; |
178 | unsigned long io_ports_array[IDE_NR_PORTS]; |
179 | }; |
180 | |
181 | int irq; /* our irq number */ |
182 | struct device *dev, *parent; |
183 | unsigned long config; |
184 | }; |
185 | |
186 | static inline void ide_std_init_ports(struct ide_hw *hw, |
187 | unsigned long io_addr, |
188 | unsigned long ctl_addr) |
189 | { |
190 | unsigned int i; |
191 | |
192 | for (i = 0; i <= 7; i++) |
193 | hw->io_ports_array[i] = io_addr++; |
194 | |
195 | hw->io_ports.ctl_addr = ctl_addr; |
196 | } |
197 | |
198 | #define MAX_HWIFS 10 |
199 | |
200 | /* |
201 | * Now for the data we need to maintain per-drive: ide_drive_t |
202 | */ |
203 | |
204 | #define ide_scsi 0x21 |
205 | #define ide_disk 0x20 |
206 | #define ide_optical 0x7 |
207 | #define ide_cdrom 0x5 |
208 | #define ide_tape 0x1 |
209 | #define ide_floppy 0x0 |
210 | |
211 | /* |
212 | * Special Driver Flags |
213 | */ |
214 | enum { |
215 | IDE_SFLAG_SET_GEOMETRY = (1 << 0), |
216 | IDE_SFLAG_RECALIBRATE = (1 << 1), |
217 | IDE_SFLAG_SET_MULTMODE = (1 << 2), |
218 | }; |
219 | |
220 | /* |
221 | * Status returned from various ide_ functions |
222 | */ |
223 | typedef enum { |
224 | ide_stopped, /* no drive operation was started */ |
225 | ide_started, /* a drive operation was started, handler was set */ |
226 | } ide_startstop_t; |
227 | |
228 | enum { |
229 | IDE_VALID_ERROR = (1 << 1), |
230 | IDE_VALID_FEATURE = IDE_VALID_ERROR, |
231 | IDE_VALID_NSECT = (1 << 2), |
232 | IDE_VALID_LBAL = (1 << 3), |
233 | IDE_VALID_LBAM = (1 << 4), |
234 | IDE_VALID_LBAH = (1 << 5), |
235 | IDE_VALID_DEVICE = (1 << 6), |
236 | IDE_VALID_LBA = IDE_VALID_LBAL | |
237 | IDE_VALID_LBAM | |
238 | IDE_VALID_LBAH, |
239 | IDE_VALID_OUT_TF = IDE_VALID_FEATURE | |
240 | IDE_VALID_NSECT | |
241 | IDE_VALID_LBA, |
242 | IDE_VALID_IN_TF = IDE_VALID_NSECT | |
243 | IDE_VALID_LBA, |
244 | IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF, |
245 | IDE_VALID_IN_HOB = IDE_VALID_ERROR | |
246 | IDE_VALID_NSECT | |
247 | IDE_VALID_LBA, |
248 | }; |
249 | |
250 | enum { |
251 | IDE_TFLAG_LBA48 = (1 << 0), |
252 | IDE_TFLAG_WRITE = (1 << 1), |
253 | IDE_TFLAG_CUSTOM_HANDLER = (1 << 2), |
254 | IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3), |
255 | /* force 16-bit I/O operations */ |
256 | IDE_TFLAG_IO_16BIT = (1 << 4), |
257 | /* struct ide_cmd was allocated using kmalloc() */ |
258 | IDE_TFLAG_DYN = (1 << 5), |
259 | IDE_TFLAG_FS = (1 << 6), |
260 | IDE_TFLAG_MULTI_PIO = (1 << 7), |
261 | IDE_TFLAG_SET_XFER = (1 << 8), |
262 | }; |
263 | |
264 | enum { |
265 | IDE_FTFLAG_FLAGGED = (1 << 0), |
266 | IDE_FTFLAG_SET_IN_FLAGS = (1 << 1), |
267 | IDE_FTFLAG_OUT_DATA = (1 << 2), |
268 | IDE_FTFLAG_IN_DATA = (1 << 3), |
269 | }; |
270 | |
271 | struct ide_taskfile { |
272 | u8 data; /* 0: data byte (for TASKFILE ioctl) */ |
273 | union { /* 1: */ |
274 | u8 error; /* read: error */ |
275 | u8 feature; /* write: feature */ |
276 | }; |
277 | u8 nsect; /* 2: number of sectors */ |
278 | u8 lbal; /* 3: LBA low */ |
279 | u8 lbam; /* 4: LBA mid */ |
280 | u8 lbah; /* 5: LBA high */ |
281 | u8 device; /* 6: device select */ |
282 | union { /* 7: */ |
283 | u8 status; /* read: status */ |
284 | u8 command; /* write: command */ |
285 | }; |
286 | }; |
287 | |
288 | struct ide_cmd { |
289 | struct ide_taskfile tf; |
290 | struct ide_taskfile hob; |
291 | struct { |
292 | struct { |
293 | u8 tf; |
294 | u8 hob; |
295 | } out, in; |
296 | } valid; |
297 | |
298 | u16 tf_flags; |
299 | u8 ftf_flags; /* for TASKFILE ioctl */ |
300 | int protocol; |
301 | |
302 | int sg_nents; /* number of sg entries */ |
303 | int orig_sg_nents; |
304 | int sg_dma_direction; /* DMA transfer direction */ |
305 | |
306 | unsigned int nbytes; |
307 | unsigned int nleft; |
308 | unsigned int last_xfer_len; |
309 | |
310 | struct scatterlist *cursg; |
311 | unsigned int cursg_ofs; |
312 | |
313 | struct request *rq; /* copy of request */ |
314 | }; |
315 | |
316 | /* ATAPI packet command flags */ |
317 | enum { |
318 | /* set when an error is considered normal - no retry (ide-tape) */ |
319 | PC_FLAG_ABORT = (1 << 0), |
320 | PC_FLAG_SUPPRESS_ERROR = (1 << 1), |
321 | PC_FLAG_WAIT_FOR_DSC = (1 << 2), |
322 | PC_FLAG_DMA_OK = (1 << 3), |
323 | PC_FLAG_DMA_IN_PROGRESS = (1 << 4), |
324 | PC_FLAG_DMA_ERROR = (1 << 5), |
325 | PC_FLAG_WRITING = (1 << 6), |
326 | }; |
327 | |
328 | #define ATAPI_WAIT_PC (60 * HZ) |
329 | |
330 | struct ide_atapi_pc { |
331 | /* actual packet bytes */ |
332 | u8 c[12]; |
333 | /* incremented on each retry */ |
334 | int retries; |
335 | int error; |
336 | |
337 | /* bytes to transfer */ |
338 | int req_xfer; |
339 | |
340 | /* the corresponding request */ |
341 | struct request *rq; |
342 | |
343 | unsigned long flags; |
344 | |
345 | /* |
346 | * those are more or less driver-specific and some of them are subject |
347 | * to change/removal later. |
348 | */ |
349 | unsigned long timeout; |
350 | }; |
351 | |
352 | struct ide_devset; |
353 | struct ide_driver; |
354 | |
355 | #ifdef CONFIG_BLK_DEV_IDEACPI |
356 | struct ide_acpi_drive_link; |
357 | struct ide_acpi_hwif_link; |
358 | #endif |
359 | |
360 | struct ide_drive_s; |
361 | |
362 | struct ide_disk_ops { |
363 | int (*check)(struct ide_drive_s *, const char *); |
364 | int (*get_capacity)(struct ide_drive_s *); |
365 | u64 (*set_capacity)(struct ide_drive_s *, u64); |
366 | void (*setup)(struct ide_drive_s *); |
367 | void (*flush)(struct ide_drive_s *); |
368 | int (*init_media)(struct ide_drive_s *, struct gendisk *); |
369 | int (*set_doorlock)(struct ide_drive_s *, struct gendisk *, |
370 | int); |
371 | ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *, |
372 | sector_t); |
373 | int (*ioctl)(struct ide_drive_s *, struct block_device *, |
374 | fmode_t, unsigned int, unsigned long); |
375 | }; |
376 | |
377 | /* ATAPI device flags */ |
378 | enum { |
379 | IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), |
380 | |
381 | /* ide-cd */ |
382 | /* Drive cannot eject the disc. */ |
383 | IDE_AFLAG_NO_EJECT = (1 << 1), |
384 | /* Drive is a pre ATAPI 1.2 drive. */ |
385 | IDE_AFLAG_PRE_ATAPI12 = (1 << 2), |
386 | /* TOC addresses are in BCD. */ |
387 | IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3), |
388 | /* TOC track numbers are in BCD. */ |
389 | IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4), |
390 | /* Saved TOC information is current. */ |
391 | IDE_AFLAG_TOC_VALID = (1 << 6), |
392 | /* We think that the drive door is locked. */ |
393 | IDE_AFLAG_DOOR_LOCKED = (1 << 7), |
394 | /* SET_CD_SPEED command is unsupported. */ |
395 | IDE_AFLAG_NO_SPEED_SELECT = (1 << 8), |
396 | IDE_AFLAG_VERTOS_300_SSD = (1 << 9), |
397 | IDE_AFLAG_VERTOS_600_ESD = (1 << 10), |
398 | IDE_AFLAG_SANYO_3CD = (1 << 11), |
399 | IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12), |
400 | IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13), |
401 | IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14), |
402 | |
403 | /* ide-floppy */ |
404 | /* Avoid commands not supported in Clik drive */ |
405 | IDE_AFLAG_CLIK_DRIVE = (1 << 15), |
406 | /* Requires BH algorithm for packets */ |
407 | IDE_AFLAG_ZIP_DRIVE = (1 << 16), |
408 | /* Supports format progress report */ |
409 | IDE_AFLAG_SRFP = (1 << 17), |
410 | |
411 | /* ide-tape */ |
412 | IDE_AFLAG_IGNORE_DSC = (1 << 18), |
413 | /* 0 When the tape position is unknown */ |
414 | IDE_AFLAG_ADDRESS_VALID = (1 << 19), |
415 | /* Device already opened */ |
416 | IDE_AFLAG_BUSY = (1 << 20), |
417 | /* Attempt to auto-detect the current user block size */ |
418 | IDE_AFLAG_DETECT_BS = (1 << 21), |
419 | /* Currently on a filemark */ |
420 | IDE_AFLAG_FILEMARK = (1 << 22), |
421 | /* 0 = no tape is loaded, so we don't rewind after ejecting */ |
422 | IDE_AFLAG_MEDIUM_PRESENT = (1 << 23), |
423 | |
424 | IDE_AFLAG_NO_AUTOCLOSE = (1 << 24), |
425 | }; |
426 | |
427 | /* device flags */ |
428 | enum { |
429 | /* restore settings after device reset */ |
430 | IDE_DFLAG_KEEP_SETTINGS = (1 << 0), |
431 | /* device is using DMA for read/write */ |
432 | IDE_DFLAG_USING_DMA = (1 << 1), |
433 | /* okay to unmask other IRQs */ |
434 | IDE_DFLAG_UNMASK = (1 << 2), |
435 | /* don't attempt flushes */ |
436 | IDE_DFLAG_NOFLUSH = (1 << 3), |
437 | /* DSC overlap */ |
438 | IDE_DFLAG_DSC_OVERLAP = (1 << 4), |
439 | /* give potential excess bandwidth */ |
440 | IDE_DFLAG_NICE1 = (1 << 5), |
441 | /* device is physically present */ |
442 | IDE_DFLAG_PRESENT = (1 << 6), |
443 | /* disable Host Protected Area */ |
444 | IDE_DFLAG_NOHPA = (1 << 7), |
445 | /* id read from device (synthetic if not set) */ |
446 | IDE_DFLAG_ID_READ = (1 << 8), |
447 | IDE_DFLAG_NOPROBE = (1 << 9), |
448 | /* need to do check_media_change() */ |
449 | IDE_DFLAG_REMOVABLE = (1 << 10), |
450 | /* needed for removable devices */ |
451 | IDE_DFLAG_ATTACH = (1 << 11), |
452 | IDE_DFLAG_FORCED_GEOM = (1 << 12), |
453 | /* disallow setting unmask bit */ |
454 | IDE_DFLAG_NO_UNMASK = (1 << 13), |
455 | /* disallow enabling 32-bit I/O */ |
456 | IDE_DFLAG_NO_IO_32BIT = (1 << 14), |
457 | /* for removable only: door lock/unlock works */ |
458 | IDE_DFLAG_DOORLOCKING = (1 << 15), |
459 | /* disallow DMA */ |
460 | IDE_DFLAG_NODMA = (1 << 16), |
461 | /* powermanagment told us not to do anything, so sleep nicely */ |
462 | IDE_DFLAG_BLOCKED = (1 << 17), |
463 | /* sleeping & sleep field valid */ |
464 | IDE_DFLAG_SLEEPING = (1 << 18), |
465 | IDE_DFLAG_POST_RESET = (1 << 19), |
466 | IDE_DFLAG_UDMA33_WARNED = (1 << 20), |
467 | IDE_DFLAG_LBA48 = (1 << 21), |
468 | /* status of write cache */ |
469 | IDE_DFLAG_WCACHE = (1 << 22), |
470 | /* used for ignoring ATA_DF */ |
471 | IDE_DFLAG_NOWERR = (1 << 23), |
472 | /* retrying in PIO */ |
473 | IDE_DFLAG_DMA_PIO_RETRY = (1 << 24), |
474 | IDE_DFLAG_LBA = (1 << 25), |
475 | /* don't unload heads */ |
476 | IDE_DFLAG_NO_UNLOAD = (1 << 26), |
477 | /* heads unloaded, please don't reset port */ |
478 | IDE_DFLAG_PARKED = (1 << 27), |
479 | IDE_DFLAG_MEDIA_CHANGED = (1 << 28), |
480 | /* write protect */ |
481 | IDE_DFLAG_WP = (1 << 29), |
482 | IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30), |
483 | IDE_DFLAG_NIEN_QUIRK = (1 << 31), |
484 | }; |
485 | |
486 | struct ide_drive_s { |
487 | char name[4]; /* drive name, such as "hda" */ |
488 | char driver_req[10]; /* requests specific driver */ |
489 | |
490 | struct request_queue *queue; /* request queue */ |
491 | |
492 | struct request *rq; /* current request */ |
493 | void *driver_data; /* extra driver data */ |
494 | u16 *id; /* identification info */ |
495 | #ifdef CONFIG_IDE_PROC_FS |
496 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
497 | const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */ |
498 | #endif |
499 | struct hwif_s *hwif; /* actually (ide_hwif_t *) */ |
500 | |
501 | const struct ide_disk_ops *disk_ops; |
502 | |
503 | unsigned long dev_flags; |
504 | |
505 | unsigned long sleep; /* sleep until this time */ |
506 | unsigned long timeout; /* max time to wait for irq */ |
507 | |
508 | u8 special_flags; /* special action flags */ |
509 | |
510 | u8 select; /* basic drive/head select reg value */ |
511 | u8 retry_pio; /* retrying dma capable host in pio */ |
512 | u8 waiting_for_dma; /* dma currently in progress */ |
513 | u8 dma; /* atapi dma flag */ |
514 | |
515 | u8 init_speed; /* transfer rate set at boot */ |
516 | u8 current_speed; /* current transfer rate set */ |
517 | u8 desired_speed; /* desired transfer rate set */ |
518 | u8 dn; /* now wide spread use */ |
519 | u8 acoustic; /* acoustic management */ |
520 | u8 media; /* disk, cdrom, tape, floppy, ... */ |
521 | u8 ready_stat; /* min status value for drive ready */ |
522 | u8 mult_count; /* current multiple sector setting */ |
523 | u8 mult_req; /* requested multiple sector setting */ |
524 | u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ |
525 | u8 bad_wstat; /* used for ignoring ATA_DF */ |
526 | u8 head; /* "real" number of heads */ |
527 | u8 sect; /* "real" sectors per track */ |
528 | u8 bios_head; /* BIOS/fdisk/LILO number of heads */ |
529 | u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ |
530 | |
531 | /* delay this long before sending packet command */ |
532 | u8 pc_delay; |
533 | |
534 | unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ |
535 | unsigned int cyl; /* "real" number of cyls */ |
536 | void *drive_data; /* used by set_pio_mode/dev_select() */ |
537 | unsigned int failures; /* current failure count */ |
538 | unsigned int max_failures; /* maximum allowed failure count */ |
539 | u64 probed_capacity;/* initial/native media capacity */ |
540 | u64 capacity64; /* total number of sectors */ |
541 | |
542 | int lun; /* logical unit */ |
543 | int crc_count; /* crc counter to reduce drive speed */ |
544 | |
545 | unsigned long debug_mask; /* debugging levels switch */ |
546 | |
547 | #ifdef CONFIG_BLK_DEV_IDEACPI |
548 | struct ide_acpi_drive_link *acpidata; |
549 | #endif |
550 | struct list_head list; |
551 | struct device gendev; |
552 | struct completion gendev_rel_comp; /* to deal with device release() */ |
553 | |
554 | /* current packet command */ |
555 | struct ide_atapi_pc *pc; |
556 | |
557 | /* last failed packet command */ |
558 | struct ide_atapi_pc *failed_pc; |
559 | |
560 | /* callback for packet commands */ |
561 | int (*pc_callback)(struct ide_drive_s *, int); |
562 | |
563 | ide_startstop_t (*irq_handler)(struct ide_drive_s *); |
564 | |
565 | unsigned long atapi_flags; |
566 | |
567 | struct ide_atapi_pc request_sense_pc; |
568 | |
569 | /* current sense rq and buffer */ |
570 | bool sense_rq_armed; |
571 | struct request sense_rq; |
572 | struct request_sense sense_data; |
573 | }; |
574 | |
575 | typedef struct ide_drive_s ide_drive_t; |
576 | |
577 | #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev) |
578 | |
579 | #define to_ide_drv(obj, cont_type) \ |
580 | container_of(obj, struct cont_type, dev) |
581 | |
582 | #define ide_drv_g(disk, cont_type) \ |
583 | container_of((disk)->private_data, struct cont_type, driver) |
584 | |
585 | struct ide_port_info; |
586 | |
587 | struct ide_tp_ops { |
588 | void (*exec_command)(struct hwif_s *, u8); |
589 | u8 (*read_status)(struct hwif_s *); |
590 | u8 (*read_altstatus)(struct hwif_s *); |
591 | void (*write_devctl)(struct hwif_s *, u8); |
592 | |
593 | void (*dev_select)(ide_drive_t *); |
594 | void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8); |
595 | void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8); |
596 | |
597 | void (*input_data)(ide_drive_t *, struct ide_cmd *, |
598 | void *, unsigned int); |
599 | void (*output_data)(ide_drive_t *, struct ide_cmd *, |
600 | void *, unsigned int); |
601 | }; |
602 | |
603 | extern const struct ide_tp_ops default_tp_ops; |
604 | |
605 | /** |
606 | * struct ide_port_ops - IDE port operations |
607 | * |
608 | * @init_dev: host specific initialization of a device |
609 | * @set_pio_mode: routine to program host for PIO mode |
610 | * @set_dma_mode: routine to program host for DMA mode |
611 | * @reset_poll: chipset polling based on hba specifics |
612 | * @pre_reset: chipset specific changes to default for device-hba resets |
613 | * @resetproc: routine to reset controller after a disk reset |
614 | * @maskproc: special host masking for drive selection |
615 | * @quirkproc: check host's drive quirk list |
616 | * @clear_irq: clear IRQ |
617 | * |
618 | * @mdma_filter: filter MDMA modes |
619 | * @udma_filter: filter UDMA modes |
620 | * |
621 | * @cable_detect: detect cable type |
622 | */ |
623 | struct ide_port_ops { |
624 | void (*init_dev)(ide_drive_t *); |
625 | void (*set_pio_mode)(ide_drive_t *, const u8); |
626 | void (*set_dma_mode)(ide_drive_t *, const u8); |
627 | int (*reset_poll)(ide_drive_t *); |
628 | void (*pre_reset)(ide_drive_t *); |
629 | void (*resetproc)(ide_drive_t *); |
630 | void (*maskproc)(ide_drive_t *, int); |
631 | void (*quirkproc)(ide_drive_t *); |
632 | void (*clear_irq)(ide_drive_t *); |
633 | int (*test_irq)(struct hwif_s *); |
634 | |
635 | u8 (*mdma_filter)(ide_drive_t *); |
636 | u8 (*udma_filter)(ide_drive_t *); |
637 | |
638 | u8 (*cable_detect)(struct hwif_s *); |
639 | }; |
640 | |
641 | struct ide_dma_ops { |
642 | void (*dma_host_set)(struct ide_drive_s *, int); |
643 | int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *); |
644 | void (*dma_start)(struct ide_drive_s *); |
645 | int (*dma_end)(struct ide_drive_s *); |
646 | int (*dma_test_irq)(struct ide_drive_s *); |
647 | void (*dma_lost_irq)(struct ide_drive_s *); |
648 | /* below ones are optional */ |
649 | int (*dma_check)(struct ide_drive_s *, struct ide_cmd *); |
650 | int (*dma_timer_expiry)(struct ide_drive_s *); |
651 | void (*dma_clear)(struct ide_drive_s *); |
652 | /* |
653 | * The following method is optional and only required to be |
654 | * implemented for the SFF-8038i compatible controllers. |
655 | */ |
656 | u8 (*dma_sff_read_status)(struct hwif_s *); |
657 | }; |
658 | |
659 | enum { |
660 | IDE_PFLAG_PROBING = (1 << 0), |
661 | }; |
662 | |
663 | struct ide_host; |
664 | |
665 | typedef struct hwif_s { |
666 | struct hwif_s *mate; /* other hwif from same PCI chip */ |
667 | struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
668 | |
669 | struct ide_host *host; |
670 | |
671 | char name[6]; /* name of interface, eg. "ide0" */ |
672 | |
673 | struct ide_io_ports io_ports; |
674 | |
675 | unsigned long sata_scr[SATA_NR_PORTS]; |
676 | |
677 | ide_drive_t *devices[MAX_DRIVES + 1]; |
678 | |
679 | unsigned long port_flags; |
680 | |
681 | u8 major; /* our major number */ |
682 | u8 index; /* 0 for ide0; 1 for ide1; ... */ |
683 | u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ |
684 | |
685 | u32 host_flags; |
686 | |
687 | u8 pio_mask; |
688 | |
689 | u8 ultra_mask; |
690 | u8 mwdma_mask; |
691 | u8 swdma_mask; |
692 | |
693 | u8 cbl; /* cable type */ |
694 | |
695 | hwif_chipset_t chipset; /* sub-module for tuning.. */ |
696 | |
697 | struct device *dev; |
698 | |
699 | void (*rw_disk)(ide_drive_t *, struct request *); |
700 | |
701 | const struct ide_tp_ops *tp_ops; |
702 | const struct ide_port_ops *port_ops; |
703 | const struct ide_dma_ops *dma_ops; |
704 | |
705 | /* dma physical region descriptor table (cpu view) */ |
706 | unsigned int *dmatable_cpu; |
707 | /* dma physical region descriptor table (dma view) */ |
708 | dma_addr_t dmatable_dma; |
709 | |
710 | /* maximum number of PRD table entries */ |
711 | int prd_max_nents; |
712 | /* PRD entry size in bytes */ |
713 | int prd_ent_size; |
714 | |
715 | /* Scatter-gather list used to build the above */ |
716 | struct scatterlist *sg_table; |
717 | int sg_max_nents; /* Maximum number of entries in it */ |
718 | |
719 | struct ide_cmd cmd; /* current command */ |
720 | |
721 | int rqsize; /* max sectors per request */ |
722 | int irq; /* our irq number */ |
723 | |
724 | unsigned long dma_base; /* base addr for dma ports */ |
725 | |
726 | unsigned long config_data; /* for use by chipset-specific code */ |
727 | unsigned long select_data; /* for use by chipset-specific code */ |
728 | |
729 | unsigned long extra_base; /* extra addr for dma ports */ |
730 | unsigned extra_ports; /* number of extra dma ports */ |
731 | |
732 | unsigned present : 1; /* this interface exists */ |
733 | unsigned busy : 1; /* serializes devices on a port */ |
734 | |
735 | struct device gendev; |
736 | struct device *portdev; |
737 | |
738 | struct completion gendev_rel_comp; /* To deal with device release() */ |
739 | |
740 | void *hwif_data; /* extra hwif data */ |
741 | |
742 | #ifdef CONFIG_BLK_DEV_IDEACPI |
743 | struct ide_acpi_hwif_link *acpidata; |
744 | #endif |
745 | |
746 | /* IRQ handler, if active */ |
747 | ide_startstop_t (*handler)(ide_drive_t *); |
748 | |
749 | /* BOOL: polling active & poll_timeout field valid */ |
750 | unsigned int polling : 1; |
751 | |
752 | /* current drive */ |
753 | ide_drive_t *cur_dev; |
754 | |
755 | /* current request */ |
756 | struct request *rq; |
757 | |
758 | /* failsafe timer */ |
759 | struct timer_list timer; |
760 | /* timeout value during long polls */ |
761 | unsigned long poll_timeout; |
762 | /* queried upon timeouts */ |
763 | int (*expiry)(ide_drive_t *); |
764 | |
765 | int req_gen; |
766 | int req_gen_timer; |
767 | |
768 | spinlock_t lock; |
769 | } ____cacheline_internodealigned_in_smp ide_hwif_t; |
770 | |
771 | #define MAX_HOST_PORTS 4 |
772 | |
773 | struct ide_host { |
774 | ide_hwif_t *ports[MAX_HOST_PORTS + 1]; |
775 | unsigned int n_ports; |
776 | struct device *dev[2]; |
777 | |
778 | int (*init_chipset)(struct pci_dev *); |
779 | |
780 | void (*get_lock)(irq_handler_t, void *); |
781 | void (*release_lock)(void); |
782 | |
783 | irq_handler_t irq_handler; |
784 | |
785 | unsigned long host_flags; |
786 | |
787 | int irq_flags; |
788 | |
789 | void *host_priv; |
790 | ide_hwif_t *cur_port; /* for hosts requiring serialization */ |
791 | |
792 | /* used for hosts requiring serialization */ |
793 | volatile unsigned long host_busy; |
794 | }; |
795 | |
796 | #define IDE_HOST_BUSY 0 |
797 | |
798 | /* |
799 | * internal ide interrupt handler type |
800 | */ |
801 | typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
802 | typedef int (ide_expiry_t)(ide_drive_t *); |
803 | |
804 | /* used by ide-cd, ide-floppy, etc. */ |
805 | typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned); |
806 | |
807 | extern struct mutex ide_setting_mtx; |
808 | |
809 | /* |
810 | * configurable drive settings |
811 | */ |
812 | |
813 | #define DS_SYNC (1 << 0) |
814 | |
815 | struct ide_devset { |
816 | int (*get)(ide_drive_t *); |
817 | int (*set)(ide_drive_t *, int); |
818 | unsigned int flags; |
819 | }; |
820 | |
821 | #define __DEVSET(_flags, _get, _set) { \ |
822 | .flags = _flags, \ |
823 | .get = _get, \ |
824 | .set = _set, \ |
825 | } |
826 | |
827 | #define ide_devset_get(name, field) \ |
828 | static int get_##name(ide_drive_t *drive) \ |
829 | { \ |
830 | return drive->field; \ |
831 | } |
832 | |
833 | #define ide_devset_set(name, field) \ |
834 | static int set_##name(ide_drive_t *drive, int arg) \ |
835 | { \ |
836 | drive->field = arg; \ |
837 | return 0; \ |
838 | } |
839 | |
840 | #define ide_devset_get_flag(name, flag) \ |
841 | static int get_##name(ide_drive_t *drive) \ |
842 | { \ |
843 | return !!(drive->dev_flags & flag); \ |
844 | } |
845 | |
846 | #define ide_devset_set_flag(name, flag) \ |
847 | static int set_##name(ide_drive_t *drive, int arg) \ |
848 | { \ |
849 | if (arg) \ |
850 | drive->dev_flags |= flag; \ |
851 | else \ |
852 | drive->dev_flags &= ~flag; \ |
853 | return 0; \ |
854 | } |
855 | |
856 | #define __IDE_DEVSET(_name, _flags, _get, _set) \ |
857 | const struct ide_devset ide_devset_##_name = \ |
858 | __DEVSET(_flags, _get, _set) |
859 | |
860 | #define IDE_DEVSET(_name, _flags, _get, _set) \ |
861 | static __IDE_DEVSET(_name, _flags, _get, _set) |
862 | |
863 | #define ide_devset_rw(_name, _func) \ |
864 | IDE_DEVSET(_name, 0, get_##_func, set_##_func) |
865 | |
866 | #define ide_devset_w(_name, _func) \ |
867 | IDE_DEVSET(_name, 0, NULL, set_##_func) |
868 | |
869 | #define ide_ext_devset_rw(_name, _func) \ |
870 | __IDE_DEVSET(_name, 0, get_##_func, set_##_func) |
871 | |
872 | #define ide_ext_devset_rw_sync(_name, _func) \ |
873 | __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) |
874 | |
875 | #define ide_decl_devset(_name) \ |
876 | extern const struct ide_devset ide_devset_##_name |
877 | |
878 | ide_decl_devset(io_32bit); |
879 | ide_decl_devset(keepsettings); |
880 | ide_decl_devset(pio_mode); |
881 | ide_decl_devset(unmaskirq); |
882 | ide_decl_devset(using_dma); |
883 | |
884 | #ifdef CONFIG_IDE_PROC_FS |
885 | /* |
886 | * /proc/ide interface |
887 | */ |
888 | |
889 | #define ide_devset_rw_field(_name, _field) \ |
890 | ide_devset_get(_name, _field); \ |
891 | ide_devset_set(_name, _field); \ |
892 | IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
893 | |
894 | #define ide_devset_rw_flag(_name, _field) \ |
895 | ide_devset_get_flag(_name, _field); \ |
896 | ide_devset_set_flag(_name, _field); \ |
897 | IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
898 | |
899 | struct ide_proc_devset { |
900 | const char *name; |
901 | const struct ide_devset *setting; |
902 | int min, max; |
903 | int (*mulf)(ide_drive_t *); |
904 | int (*divf)(ide_drive_t *); |
905 | }; |
906 | |
907 | #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \ |
908 | .name = __stringify(_name), \ |
909 | .setting = &ide_devset_##_name, \ |
910 | .min = _min, \ |
911 | .max = _max, \ |
912 | .mulf = _mulf, \ |
913 | .divf = _divf, \ |
914 | } |
915 | |
916 | #define IDE_PROC_DEVSET(_name, _min, _max) \ |
917 | __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL) |
918 | |
919 | typedef struct { |
920 | const char *name; |
921 | mode_t mode; |
922 | const struct file_operations *proc_fops; |
923 | } ide_proc_entry_t; |
924 | |
925 | void proc_ide_create(void); |
926 | void proc_ide_destroy(void); |
927 | void ide_proc_register_port(ide_hwif_t *); |
928 | void ide_proc_port_register_devices(ide_hwif_t *); |
929 | void ide_proc_unregister_device(ide_drive_t *); |
930 | void ide_proc_unregister_port(ide_hwif_t *); |
931 | void ide_proc_register_driver(ide_drive_t *, struct ide_driver *); |
932 | void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *); |
933 | |
934 | extern const struct file_operations ide_capacity_proc_fops; |
935 | extern const struct file_operations ide_geometry_proc_fops; |
936 | #else |
937 | static inline void proc_ide_create(void) { ; } |
938 | static inline void proc_ide_destroy(void) { ; } |
939 | static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } |
940 | static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } |
941 | static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } |
942 | static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } |
943 | static inline void ide_proc_register_driver(ide_drive_t *drive, |
944 | struct ide_driver *driver) { ; } |
945 | static inline void ide_proc_unregister_driver(ide_drive_t *drive, |
946 | struct ide_driver *driver) { ; } |
947 | #endif |
948 | |
949 | enum { |
950 | /* enter/exit functions */ |
951 | IDE_DBG_FUNC = (1 << 0), |
952 | /* sense key/asc handling */ |
953 | IDE_DBG_SENSE = (1 << 1), |
954 | /* packet commands handling */ |
955 | IDE_DBG_PC = (1 << 2), |
956 | /* request handling */ |
957 | IDE_DBG_RQ = (1 << 3), |
958 | /* driver probing/setup */ |
959 | IDE_DBG_PROBE = (1 << 4), |
960 | }; |
961 | |
962 | /* DRV_NAME has to be defined in the driver before using the macro below */ |
963 | #define __ide_debug_log(lvl, fmt, args...) \ |
964 | { \ |
965 | if (unlikely(drive->debug_mask & lvl)) \ |
966 | printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \ |
967 | __func__, ## args); \ |
968 | } |
969 | |
970 | /* |
971 | * Power Management state machine (rq->pm->pm_step). |
972 | * |
973 | * For each step, the core calls ide_start_power_step() first. |
974 | * This can return: |
975 | * - ide_stopped : In this case, the core calls us back again unless |
976 | * step have been set to ide_power_state_completed. |
977 | * - ide_started : In this case, the channel is left busy until an |
978 | * async event (interrupt) occurs. |
979 | * Typically, ide_start_power_step() will issue a taskfile request with |
980 | * do_rw_taskfile(). |
981 | * |
982 | * Upon reception of the interrupt, the core will call ide_complete_power_step() |
983 | * with the error code if any. This routine should update the step value |
984 | * and return. It should not start a new request. The core will call |
985 | * ide_start_power_step() for the new step value, unless step have been |
986 | * set to IDE_PM_COMPLETED. |
987 | */ |
988 | enum { |
989 | IDE_PM_START_SUSPEND, |
990 | IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND, |
991 | IDE_PM_STANDBY, |
992 | |
993 | IDE_PM_START_RESUME, |
994 | IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME, |
995 | IDE_PM_IDLE, |
996 | IDE_PM_RESTORE_DMA, |
997 | |
998 | IDE_PM_COMPLETED, |
999 | }; |
1000 | |
1001 | int generic_ide_suspend(struct device *, pm_message_t); |
1002 | int generic_ide_resume(struct device *); |
1003 | |
1004 | void ide_complete_power_step(ide_drive_t *, struct request *); |
1005 | ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *); |
1006 | void ide_complete_pm_rq(ide_drive_t *, struct request *); |
1007 | void ide_check_pm_state(ide_drive_t *, struct request *); |
1008 | |
1009 | /* |
1010 | * Subdrivers support. |
1011 | * |
1012 | * The gendriver.owner field should be set to the module owner of this driver. |
1013 | * The gendriver.name field should be set to the name of this driver |
1014 | */ |
1015 | struct ide_driver { |
1016 | const char *version; |
1017 | ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); |
1018 | struct device_driver gen_driver; |
1019 | int (*probe)(ide_drive_t *); |
1020 | void (*remove)(ide_drive_t *); |
1021 | void (*resume)(ide_drive_t *); |
1022 | void (*shutdown)(ide_drive_t *); |
1023 | #ifdef CONFIG_IDE_PROC_FS |
1024 | ide_proc_entry_t * (*proc_entries)(ide_drive_t *); |
1025 | const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *); |
1026 | #endif |
1027 | }; |
1028 | |
1029 | #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver) |
1030 | |
1031 | int ide_device_get(ide_drive_t *); |
1032 | void ide_device_put(ide_drive_t *); |
1033 | |
1034 | struct ide_ioctl_devset { |
1035 | unsigned int get_ioctl; |
1036 | unsigned int set_ioctl; |
1037 | const struct ide_devset *setting; |
1038 | }; |
1039 | |
1040 | int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, |
1041 | unsigned long, const struct ide_ioctl_devset *); |
1042 | |
1043 | int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long); |
1044 | |
1045 | extern int ide_vlb_clk; |
1046 | extern int ide_pci_clk; |
1047 | |
1048 | int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int); |
1049 | void ide_kill_rq(ide_drive_t *, struct request *); |
1050 | |
1051 | void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); |
1052 | void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); |
1053 | |
1054 | void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *, |
1055 | unsigned int); |
1056 | |
1057 | void ide_pad_transfer(ide_drive_t *, int, int); |
1058 | |
1059 | ide_startstop_t ide_error(ide_drive_t *, const char *, u8); |
1060 | |
1061 | void ide_fix_driveid(u16 *); |
1062 | |
1063 | extern void ide_fixstring(u8 *, const int, const int); |
1064 | |
1065 | int ide_busy_sleep(ide_drive_t *, unsigned long, int); |
1066 | |
1067 | int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *); |
1068 | int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
1069 | |
1070 | ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *); |
1071 | ide_startstop_t ide_do_devset(ide_drive_t *, struct request *); |
1072 | |
1073 | extern ide_startstop_t ide_do_reset (ide_drive_t *); |
1074 | |
1075 | extern int ide_devset_execute(ide_drive_t *drive, |
1076 | const struct ide_devset *setting, int arg); |
1077 | |
1078 | void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8); |
1079 | int ide_complete_rq(ide_drive_t *, int, unsigned int); |
1080 | |
1081 | void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd); |
1082 | void ide_tf_dump(const char *, struct ide_cmd *); |
1083 | |
1084 | void ide_exec_command(ide_hwif_t *, u8); |
1085 | u8 ide_read_status(ide_hwif_t *); |
1086 | u8 ide_read_altstatus(ide_hwif_t *); |
1087 | void ide_write_devctl(ide_hwif_t *, u8); |
1088 | |
1089 | void ide_dev_select(ide_drive_t *); |
1090 | void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8); |
1091 | void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8); |
1092 | |
1093 | void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); |
1094 | void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); |
1095 | |
1096 | void SELECT_MASK(ide_drive_t *, int); |
1097 | |
1098 | u8 ide_read_error(ide_drive_t *); |
1099 | void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); |
1100 | |
1101 | int ide_check_ireason(ide_drive_t *, struct request *, int, int, int); |
1102 | |
1103 | int ide_check_atapi_device(ide_drive_t *, const char *); |
1104 | |
1105 | void ide_init_pc(struct ide_atapi_pc *); |
1106 | |
1107 | /* Disk head parking */ |
1108 | extern wait_queue_head_t ide_park_wq; |
1109 | ssize_t ide_park_show(struct device *dev, struct device_attribute *attr, |
1110 | char *buf); |
1111 | ssize_t ide_park_store(struct device *dev, struct device_attribute *attr, |
1112 | const char *buf, size_t len); |
1113 | |
1114 | /* |
1115 | * Special requests for ide-tape block device strategy routine. |
1116 | * |
1117 | * In order to service a character device command, we add special requests to |
1118 | * the tail of our block device request queue and wait for their completion. |
1119 | */ |
1120 | enum { |
1121 | REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ |
1122 | REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ |
1123 | REQ_IDETAPE_READ = (1 << 2), |
1124 | REQ_IDETAPE_WRITE = (1 << 3), |
1125 | }; |
1126 | |
1127 | int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, |
1128 | void *, unsigned int); |
1129 | |
1130 | int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); |
1131 | int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); |
1132 | int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); |
1133 | void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); |
1134 | void ide_retry_pc(ide_drive_t *drive); |
1135 | |
1136 | void ide_prep_sense(ide_drive_t *drive, struct request *rq); |
1137 | int ide_queue_sense_rq(ide_drive_t *drive, void *special); |
1138 | |
1139 | int ide_cd_expiry(ide_drive_t *); |
1140 | |
1141 | int ide_cd_get_xferlen(struct request *); |
1142 | |
1143 | ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *); |
1144 | |
1145 | ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *); |
1146 | |
1147 | void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int); |
1148 | |
1149 | void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8); |
1150 | |
1151 | int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16); |
1152 | int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *); |
1153 | |
1154 | int ide_taskfile_ioctl(ide_drive_t *, unsigned long); |
1155 | |
1156 | int ide_dev_read_id(ide_drive_t *, u8, u16 *, int); |
1157 | |
1158 | extern int ide_driveid_update(ide_drive_t *); |
1159 | extern int ide_config_drive_speed(ide_drive_t *, u8); |
1160 | extern u8 eighty_ninty_three (ide_drive_t *); |
1161 | extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
1162 | |
1163 | extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); |
1164 | |
1165 | extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
1166 | |
1167 | extern void ide_timer_expiry(unsigned long); |
1168 | extern irqreturn_t ide_intr(int irq, void *dev_id); |
1169 | extern void do_ide_request(struct request_queue *); |
1170 | |
1171 | void ide_init_disk(struct gendisk *, ide_drive_t *); |
1172 | |
1173 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1174 | extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); |
1175 | #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) |
1176 | #else |
1177 | #define ide_pci_register_driver(d) pci_register_driver(d) |
1178 | #endif |
1179 | |
1180 | static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev) |
1181 | { |
1182 | if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) |
1183 | return 1; |
1184 | return 0; |
1185 | } |
1186 | |
1187 | void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, |
1188 | struct ide_hw *, struct ide_hw **); |
1189 | void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); |
1190 | |
1191 | #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
1192 | int ide_pci_set_master(struct pci_dev *, const char *); |
1193 | unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); |
1194 | int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); |
1195 | int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); |
1196 | #else |
1197 | static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, |
1198 | const struct ide_port_info *d) |
1199 | { |
1200 | return -EINVAL; |
1201 | } |
1202 | #endif |
1203 | |
1204 | struct ide_pci_enablebit { |
1205 | u8 reg; /* byte pci reg holding the enable-bit */ |
1206 | u8 mask; /* mask to isolate the enable-bit */ |
1207 | u8 val; /* value of masked reg when "enabled" */ |
1208 | }; |
1209 | |
1210 | enum { |
1211 | /* Uses ISA control ports not PCI ones. */ |
1212 | IDE_HFLAG_ISA_PORTS = (1 << 0), |
1213 | /* single port device */ |
1214 | IDE_HFLAG_SINGLE = (1 << 1), |
1215 | /* don't use legacy PIO blacklist */ |
1216 | IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), |
1217 | /* set for the second port of QD65xx */ |
1218 | IDE_HFLAG_QD_2ND_PORT = (1 << 3), |
1219 | /* use PIO8/9 for prefetch off/on */ |
1220 | IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), |
1221 | /* use PIO6/7 for fast-devsel off/on */ |
1222 | IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), |
1223 | /* use 100-102 and 200-202 PIO values to set DMA modes */ |
1224 | IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), |
1225 | /* |
1226 | * keep DMA setting when programming PIO mode, may be used only |
1227 | * for hosts which have separate PIO and DMA timings (ie. PMAC) |
1228 | */ |
1229 | IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), |
1230 | /* program host for the transfer mode after programming device */ |
1231 | IDE_HFLAG_POST_SET_MODE = (1 << 8), |
1232 | /* don't program host/device for the transfer mode ("smart" hosts) */ |
1233 | IDE_HFLAG_NO_SET_MODE = (1 << 9), |
1234 | /* trust BIOS for programming chipset/device for DMA */ |
1235 | IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), |
1236 | /* host is CS5510/CS5520 */ |
1237 | IDE_HFLAG_CS5520 = (1 << 11), |
1238 | /* ATAPI DMA is unsupported */ |
1239 | IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), |
1240 | /* set if host is a "non-bootable" controller */ |
1241 | IDE_HFLAG_NON_BOOTABLE = (1 << 13), |
1242 | /* host doesn't support DMA */ |
1243 | IDE_HFLAG_NO_DMA = (1 << 14), |
1244 | /* check if host is PCI IDE device before allowing DMA */ |
1245 | IDE_HFLAG_NO_AUTODMA = (1 << 15), |
1246 | /* host uses MMIO */ |
1247 | IDE_HFLAG_MMIO = (1 << 16), |
1248 | /* no LBA48 */ |
1249 | IDE_HFLAG_NO_LBA48 = (1 << 17), |
1250 | /* no LBA48 DMA */ |
1251 | IDE_HFLAG_NO_LBA48_DMA = (1 << 18), |
1252 | /* data FIFO is cleared by an error */ |
1253 | IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), |
1254 | /* serialize ports */ |
1255 | IDE_HFLAG_SERIALIZE = (1 << 20), |
1256 | /* host is DTC2278 */ |
1257 | IDE_HFLAG_DTC2278 = (1 << 21), |
1258 | /* 4 devices on a single set of I/O ports */ |
1259 | IDE_HFLAG_4DRIVES = (1 << 22), |
1260 | /* host is TRM290 */ |
1261 | IDE_HFLAG_TRM290 = (1 << 23), |
1262 | /* use 32-bit I/O ops */ |
1263 | IDE_HFLAG_IO_32BIT = (1 << 24), |
1264 | /* unmask IRQs */ |
1265 | IDE_HFLAG_UNMASK_IRQS = (1 << 25), |
1266 | IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26), |
1267 | /* serialize ports if DMA is possible (for sl82c105) */ |
1268 | IDE_HFLAG_SERIALIZE_DMA = (1 << 27), |
1269 | /* force host out of "simplex" mode */ |
1270 | IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), |
1271 | /* DSC overlap is unsupported */ |
1272 | IDE_HFLAG_NO_DSC = (1 << 29), |
1273 | /* never use 32-bit I/O ops */ |
1274 | IDE_HFLAG_NO_IO_32BIT = (1 << 30), |
1275 | /* never unmask IRQs */ |
1276 | IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), |
1277 | }; |
1278 | |
1279 | #ifdef CONFIG_BLK_DEV_OFFBOARD |
1280 | # define IDE_HFLAG_OFF_BOARD 0 |
1281 | #else |
1282 | # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE |
1283 | #endif |
1284 | |
1285 | struct ide_port_info { |
1286 | char *name; |
1287 | |
1288 | int (*init_chipset)(struct pci_dev *); |
1289 | |
1290 | void (*get_lock)(irq_handler_t, void *); |
1291 | void (*release_lock)(void); |
1292 | |
1293 | void (*init_iops)(ide_hwif_t *); |
1294 | void (*init_hwif)(ide_hwif_t *); |
1295 | int (*init_dma)(ide_hwif_t *, |
1296 | const struct ide_port_info *); |
1297 | |
1298 | const struct ide_tp_ops *tp_ops; |
1299 | const struct ide_port_ops *port_ops; |
1300 | const struct ide_dma_ops *dma_ops; |
1301 | |
1302 | struct ide_pci_enablebit enablebits[2]; |
1303 | |
1304 | hwif_chipset_t chipset; |
1305 | |
1306 | u16 max_sectors; /* if < than the default one */ |
1307 | |
1308 | u32 host_flags; |
1309 | |
1310 | int irq_flags; |
1311 | |
1312 | u8 pio_mask; |
1313 | u8 swdma_mask; |
1314 | u8 mwdma_mask; |
1315 | u8 udma_mask; |
1316 | }; |
1317 | |
1318 | int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); |
1319 | int ide_pci_init_two(struct pci_dev *, struct pci_dev *, |
1320 | const struct ide_port_info *, void *); |
1321 | void ide_pci_remove(struct pci_dev *); |
1322 | |
1323 | #ifdef CONFIG_PM |
1324 | int ide_pci_suspend(struct pci_dev *, pm_message_t); |
1325 | int ide_pci_resume(struct pci_dev *); |
1326 | #else |
1327 | #define ide_pci_suspend NULL |
1328 | #define ide_pci_resume NULL |
1329 | #endif |
1330 | |
1331 | void ide_map_sg(ide_drive_t *, struct ide_cmd *); |
1332 | void ide_init_sg_cmd(struct ide_cmd *, unsigned int); |
1333 | |
1334 | #define BAD_DMA_DRIVE 0 |
1335 | #define GOOD_DMA_DRIVE 1 |
1336 | |
1337 | struct drive_list_entry { |
1338 | const char *id_model; |
1339 | const char *id_firmware; |
1340 | }; |
1341 | |
1342 | int ide_in_drive_list(u16 *, const struct drive_list_entry *); |
1343 | |
1344 | #ifdef CONFIG_BLK_DEV_IDEDMA |
1345 | int ide_dma_good_drive(ide_drive_t *); |
1346 | int __ide_dma_bad_drive(ide_drive_t *); |
1347 | |
1348 | u8 ide_find_dma_mode(ide_drive_t *, u8); |
1349 | |
1350 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) |
1351 | { |
1352 | return ide_find_dma_mode(drive, XFER_UDMA_6); |
1353 | } |
1354 | |
1355 | void ide_dma_off_quietly(ide_drive_t *); |
1356 | void ide_dma_off(ide_drive_t *); |
1357 | void ide_dma_on(ide_drive_t *); |
1358 | int ide_set_dma(ide_drive_t *); |
1359 | void ide_check_dma_crc(ide_drive_t *); |
1360 | ide_startstop_t ide_dma_intr(ide_drive_t *); |
1361 | |
1362 | int ide_allocate_dma_engine(ide_hwif_t *); |
1363 | void ide_release_dma_engine(ide_hwif_t *); |
1364 | |
1365 | int ide_dma_prepare(ide_drive_t *, struct ide_cmd *); |
1366 | void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *); |
1367 | |
1368 | #ifdef CONFIG_BLK_DEV_IDEDMA_SFF |
1369 | int config_drive_for_dma(ide_drive_t *); |
1370 | int ide_build_dmatable(ide_drive_t *, struct ide_cmd *); |
1371 | void ide_dma_host_set(ide_drive_t *, int); |
1372 | int ide_dma_setup(ide_drive_t *, struct ide_cmd *); |
1373 | extern void ide_dma_start(ide_drive_t *); |
1374 | int ide_dma_end(ide_drive_t *); |
1375 | int ide_dma_test_irq(ide_drive_t *); |
1376 | int ide_dma_sff_timer_expiry(ide_drive_t *); |
1377 | u8 ide_dma_sff_read_status(ide_hwif_t *); |
1378 | extern const struct ide_dma_ops sff_dma_ops; |
1379 | #else |
1380 | static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; } |
1381 | #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ |
1382 | |
1383 | void ide_dma_lost_irq(ide_drive_t *); |
1384 | ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int); |
1385 | |
1386 | #else |
1387 | static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } |
1388 | static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } |
1389 | static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } |
1390 | static inline void ide_dma_off(ide_drive_t *drive) { ; } |
1391 | static inline void ide_dma_on(ide_drive_t *drive) { ; } |
1392 | static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
1393 | static inline int ide_set_dma(ide_drive_t *drive) { return 1; } |
1394 | static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } |
1395 | static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; } |
1396 | static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; } |
1397 | static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } |
1398 | static inline int ide_dma_prepare(ide_drive_t *drive, |
1399 | struct ide_cmd *cmd) { return 1; } |
1400 | static inline void ide_dma_unmap_sg(ide_drive_t *drive, |
1401 | struct ide_cmd *cmd) { ; } |
1402 | #endif /* CONFIG_BLK_DEV_IDEDMA */ |
1403 | |
1404 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1405 | int ide_acpi_init(void); |
1406 | bool ide_port_acpi(ide_hwif_t *hwif); |
1407 | extern int ide_acpi_exec_tfs(ide_drive_t *drive); |
1408 | extern void ide_acpi_get_timing(ide_hwif_t *hwif); |
1409 | extern void ide_acpi_push_timing(ide_hwif_t *hwif); |
1410 | void ide_acpi_init_port(ide_hwif_t *); |
1411 | void ide_acpi_port_init_devices(ide_hwif_t *); |
1412 | extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); |
1413 | #else |
1414 | static inline int ide_acpi_init(void) { return 0; } |
1415 | static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; } |
1416 | static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } |
1417 | static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } |
1418 | static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } |
1419 | static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; } |
1420 | static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } |
1421 | static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} |
1422 | #endif |
1423 | |
1424 | void ide_register_region(struct gendisk *); |
1425 | void ide_unregister_region(struct gendisk *); |
1426 | |
1427 | void ide_check_nien_quirk_list(ide_drive_t *); |
1428 | void ide_undecoded_slave(ide_drive_t *); |
1429 | |
1430 | void ide_port_apply_params(ide_hwif_t *); |
1431 | int ide_sysfs_register_port(ide_hwif_t *); |
1432 | |
1433 | struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **, |
1434 | unsigned int); |
1435 | void ide_host_free(struct ide_host *); |
1436 | int ide_host_register(struct ide_host *, const struct ide_port_info *, |
1437 | struct ide_hw **); |
1438 | int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int, |
1439 | struct ide_host **); |
1440 | void ide_host_remove(struct ide_host *); |
1441 | int ide_legacy_device_add(const struct ide_port_info *, unsigned long); |
1442 | void ide_port_unregister_devices(ide_hwif_t *); |
1443 | void ide_port_scan(ide_hwif_t *); |
1444 | |
1445 | static inline void *ide_get_hwifdata (ide_hwif_t * hwif) |
1446 | { |
1447 | return hwif->hwif_data; |
1448 | } |
1449 | |
1450 | static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) |
1451 | { |
1452 | hwif->hwif_data = data; |
1453 | } |
1454 | |
1455 | extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
1456 | |
1457 | u64 ide_get_lba_addr(struct ide_cmd *, int); |
1458 | u8 ide_dump_status(ide_drive_t *, const char *, u8); |
1459 | |
1460 | struct ide_timing { |
1461 | u8 mode; |
1462 | u8 setup; /* t1 */ |
1463 | u16 act8b; /* t2 for 8-bit io */ |
1464 | u16 rec8b; /* t2i for 8-bit io */ |
1465 | u16 cyc8b; /* t0 for 8-bit io */ |
1466 | u16 active; /* t2 or tD */ |
1467 | u16 recover; /* t2i or tK */ |
1468 | u16 cycle; /* t0 */ |
1469 | u16 udma; /* t2CYCTYP/2 */ |
1470 | }; |
1471 | |
1472 | enum { |
1473 | IDE_TIMING_SETUP = (1 << 0), |
1474 | IDE_TIMING_ACT8B = (1 << 1), |
1475 | IDE_TIMING_REC8B = (1 << 2), |
1476 | IDE_TIMING_CYC8B = (1 << 3), |
1477 | IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | |
1478 | IDE_TIMING_CYC8B, |
1479 | IDE_TIMING_ACTIVE = (1 << 4), |
1480 | IDE_TIMING_RECOVER = (1 << 5), |
1481 | IDE_TIMING_CYCLE = (1 << 6), |
1482 | IDE_TIMING_UDMA = (1 << 7), |
1483 | IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | |
1484 | IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | |
1485 | IDE_TIMING_CYCLE | IDE_TIMING_UDMA, |
1486 | }; |
1487 | |
1488 | struct ide_timing *ide_timing_find_mode(u8); |
1489 | u16 ide_pio_cycle_time(ide_drive_t *, u8); |
1490 | void ide_timing_merge(struct ide_timing *, struct ide_timing *, |
1491 | struct ide_timing *, unsigned int); |
1492 | int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); |
1493 | |
1494 | #ifdef CONFIG_IDE_XFER_MODE |
1495 | int ide_scan_pio_blacklist(char *); |
1496 | const char *ide_xfer_verbose(u8); |
1497 | u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8); |
1498 | int ide_pio_need_iordy(ide_drive_t *, const u8); |
1499 | int ide_set_pio_mode(ide_drive_t *, u8); |
1500 | int ide_set_dma_mode(ide_drive_t *, u8); |
1501 | void ide_set_pio(ide_drive_t *, u8); |
1502 | int ide_set_xfer_rate(ide_drive_t *, u8); |
1503 | #else |
1504 | static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; } |
1505 | static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; } |
1506 | #endif |
1507 | |
1508 | static inline void ide_set_max_pio(ide_drive_t *drive) |
1509 | { |
1510 | ide_set_pio(drive, 255); |
1511 | } |
1512 | |
1513 | char *ide_media_string(ide_drive_t *); |
1514 | |
1515 | extern struct device_attribute ide_dev_attrs[]; |
1516 | extern struct bus_type ide_bus_type; |
1517 | extern struct class *ide_port_class; |
1518 | |
1519 | static inline void ide_dump_identify(u8 *id) |
1520 | { |
1521 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); |
1522 | } |
1523 | |
1524 | static inline int hwif_to_node(ide_hwif_t *hwif) |
1525 | { |
1526 | return hwif->dev ? dev_to_node(hwif->dev) : -1; |
1527 | } |
1528 | |
1529 | static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) |
1530 | { |
1531 | ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1]; |
1532 | |
1533 | return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; |
1534 | } |
1535 | |
1536 | static inline void *ide_get_drivedata(ide_drive_t *drive) |
1537 | { |
1538 | return drive->drive_data; |
1539 | } |
1540 | |
1541 | static inline void ide_set_drivedata(ide_drive_t *drive, void *data) |
1542 | { |
1543 | drive->drive_data = data; |
1544 | } |
1545 | |
1546 | #define ide_port_for_each_dev(i, dev, port) \ |
1547 | for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) |
1548 | |
1549 | #define ide_port_for_each_present_dev(i, dev, port) \ |
1550 | for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \ |
1551 | if ((dev)->dev_flags & IDE_DFLAG_PRESENT) |
1552 | |
1553 | #define ide_host_for_each_port(i, port, host) \ |
1554 | for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++) |
1555 | |
1556 | #endif /* _IDE_H */ |
1557 |
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