1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
30#include <linux/jiffies.h>
31#include <linux/interrupt.h>
32#include <linux/dma-mapping.h>
33#include <linux/scatterlist.h>
34#include <linux/io.h>
35#include <linux/ata.h>
36#include <linux/workqueue.h>
37#include <scsi/scsi_host.h>
38#include <linux/acpi.h>
39#include <linux/cdrom.h>
40#include <linux/sched.h>
41
42
43
44
45
46#ifdef CONFIG_ATA_NONSTANDARD
47#include <asm/libata-portmap.h>
48#else
49#include <asm-generic/libata-portmap.h>
50#endif
51
52
53
54
55
56#undef ATA_DEBUG
57#undef ATA_VERBOSE_DEBUG
58#undef ATA_IRQ_TRAP
59#undef ATA_NDEBUG
60
61
62
63#ifdef ATA_DEBUG
64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
65#ifdef ATA_VERBOSE_DEBUG
66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
67#else
68#define VPRINTK(fmt, args...)
69#endif
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif
74
75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
76
77#define ata_print_version_once(dev, version) \
78({ \
79 static bool __print_once; \
80 \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
84 } \
85})
86
87
88#define HAVE_LIBATA_MSG 1
89
90enum {
91 ATA_MSG_DRV = 0x0001,
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
96 ATA_MSG_CTL = 0x0020,
97 ATA_MSG_INTR = 0x0040,
98 ATA_MSG_ERR = 0x0080,
99};
100
101#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
109
110static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
111{
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits;
114 if (!dval)
115 return 0;
116 return (1 << dval) - 1;
117}
118
119
120#define ATA_TAG_POISON 0xfafbfcfdU
121
122enum {
123
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4,
126 ATA_DEF_QUEUE = 1,
127
128 ATA_MAX_QUEUE = 32,
129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
130 ATA_SHORT_PAUSE = 16,
131
132 ATAPI_MAX_DRAIN = 16 << 10,
133
134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
135
136 ATA_SHT_EMULATED = 1,
137 ATA_SHT_THIS_ID = -1,
138 ATA_SHT_USE_CLUSTERING = 1,
139
140
141 ATA_TFLAG_LBA48 = (1 << 0),
142 ATA_TFLAG_ISADDR = (1 << 1),
143 ATA_TFLAG_DEVICE = (1 << 2),
144 ATA_TFLAG_WRITE = (1 << 3),
145 ATA_TFLAG_LBA = (1 << 4),
146 ATA_TFLAG_FUA = (1 << 5),
147 ATA_TFLAG_POLLING = (1 << 6),
148
149
150 ATA_PROT_FLAG_PIO = (1 << 0),
151 ATA_PROT_FLAG_DMA = (1 << 1),
152 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
153 ATA_PROT_FLAG_NCQ = (1 << 2),
154 ATA_PROT_FLAG_ATAPI = (1 << 3),
155
156
157 ATA_DFLAG_LBA = (1 << 0),
158 ATA_DFLAG_LBA48 = (1 << 1),
159 ATA_DFLAG_CDB_INTR = (1 << 2),
160 ATA_DFLAG_NCQ = (1 << 3),
161 ATA_DFLAG_FLUSH_EXT = (1 << 4),
162 ATA_DFLAG_ACPI_PENDING = (1 << 5),
163 ATA_DFLAG_ACPI_FAILED = (1 << 6),
164 ATA_DFLAG_AN = (1 << 7),
165 ATA_DFLAG_DMADIR = (1 << 10),
166 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
167
168 ATA_DFLAG_PIO = (1 << 12),
169 ATA_DFLAG_NCQ_OFF = (1 << 13),
170 ATA_DFLAG_SLEEPING = (1 << 15),
171 ATA_DFLAG_DUBIOUS_XFER = (1 << 16),
172 ATA_DFLAG_NO_UNLOAD = (1 << 17),
173 ATA_DFLAG_UNLOCK_HPA = (1 << 18),
174 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19),
175 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
176
177 ATA_DFLAG_DETACH = (1 << 24),
178 ATA_DFLAG_DETACHED = (1 << 25),
179
180 ATA_DFLAG_DA = (1 << 26),
181 ATA_DFLAG_DEVSLP = (1 << 27),
182 ATA_DFLAG_ACPI_DISABLED = (1 << 28),
183
184 ATA_DEV_UNKNOWN = 0,
185 ATA_DEV_ATA = 1,
186 ATA_DEV_ATA_UNSUP = 2,
187 ATA_DEV_ATAPI = 3,
188 ATA_DEV_ATAPI_UNSUP = 4,
189 ATA_DEV_PMP = 5,
190 ATA_DEV_PMP_UNSUP = 6,
191 ATA_DEV_SEMB = 7,
192 ATA_DEV_SEMB_UNSUP = 8,
193 ATA_DEV_ZAC = 9,
194 ATA_DEV_NONE = 10,
195
196
197 ATA_LFLAG_NO_HRST = (1 << 1),
198 ATA_LFLAG_NO_SRST = (1 << 2),
199 ATA_LFLAG_ASSUME_ATA = (1 << 3),
200 ATA_LFLAG_ASSUME_SEMB = (1 << 4),
201 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
202 ATA_LFLAG_NO_RETRY = (1 << 5),
203 ATA_LFLAG_DISABLED = (1 << 6),
204 ATA_LFLAG_SW_ACTIVITY = (1 << 7),
205 ATA_LFLAG_NO_LPM = (1 << 8),
206 ATA_LFLAG_RST_ONCE = (1 << 9),
207 ATA_LFLAG_CHANGED = (1 << 10),
208
209
210 ATA_FLAG_SLAVE_POSS = (1 << 0),
211
212 ATA_FLAG_SATA = (1 << 1),
213 ATA_FLAG_NO_ATAPI = (1 << 6),
214 ATA_FLAG_PIO_DMA = (1 << 7),
215 ATA_FLAG_PIO_LBA48 = (1 << 8),
216 ATA_FLAG_PIO_POLLING = (1 << 9),
217
218 ATA_FLAG_NCQ = (1 << 10),
219 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11),
220 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12),
221 ATA_FLAG_DEBUGMSG = (1 << 13),
222 ATA_FLAG_FPDMA_AA = (1 << 14),
223 ATA_FLAG_IGN_SIMPLEX = (1 << 15),
224 ATA_FLAG_NO_IORDY = (1 << 16),
225 ATA_FLAG_ACPI_SATA = (1 << 17),
226 ATA_FLAG_AN = (1 << 18),
227 ATA_FLAG_PMP = (1 << 19),
228 ATA_FLAG_FPDMA_AUX = (1 << 20),
229 ATA_FLAG_EM = (1 << 21),
230
231 ATA_FLAG_SW_ACTIVITY = (1 << 22),
232
233 ATA_FLAG_NO_DIPM = (1 << 23),
234 ATA_FLAG_SAS_HOST = (1 << 24),
235
236
237
238
239
240 ATA_PFLAG_EH_PENDING = (1 << 0),
241 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1),
242 ATA_PFLAG_FROZEN = (1 << 2),
243 ATA_PFLAG_RECOVERED = (1 << 3),
244 ATA_PFLAG_LOADING = (1 << 4),
245 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6),
246 ATA_PFLAG_INITIALIZING = (1 << 7),
247 ATA_PFLAG_RESETTING = (1 << 8),
248 ATA_PFLAG_UNLOADING = (1 << 9),
249 ATA_PFLAG_UNLOADED = (1 << 10),
250
251 ATA_PFLAG_SUSPENDED = (1 << 17),
252 ATA_PFLAG_PM_PENDING = (1 << 18),
253 ATA_PFLAG_INIT_GTM_VALID = (1 << 19),
254
255 ATA_PFLAG_PIO32 = (1 << 20),
256 ATA_PFLAG_PIO32CHANGE = (1 << 21),
257
258
259 ATA_QCFLAG_ACTIVE = (1 << 0),
260 ATA_QCFLAG_DMAMAP = (1 << 1),
261 ATA_QCFLAG_IO = (1 << 3),
262 ATA_QCFLAG_RESULT_TF = (1 << 4),
263 ATA_QCFLAG_CLEAR_EXCL = (1 << 5),
264 ATA_QCFLAG_QUIET = (1 << 6),
265 ATA_QCFLAG_RETRY = (1 << 7),
266
267 ATA_QCFLAG_FAILED = (1 << 16),
268 ATA_QCFLAG_SENSE_VALID = (1 << 17),
269 ATA_QCFLAG_EH_SCHEDULED = (1 << 18),
270
271
272 ATA_HOST_SIMPLEX = (1 << 0),
273 ATA_HOST_STARTED = (1 << 1),
274 ATA_HOST_PARALLEL_SCAN = (1 << 2),
275 ATA_HOST_IGNORE_ATA = (1 << 3),
276
277
278
279
280 ATA_TMOUT_BOOT = 30000,
281 ATA_TMOUT_BOOT_QUICK = 7000,
282 ATA_TMOUT_INTERNAL_QUICK = 5000,
283 ATA_TMOUT_MAX_PARK = 30000,
284
285
286
287
288
289
290 ATA_TMOUT_FF_WAIT_LONG = 2000,
291 ATA_TMOUT_FF_WAIT = 800,
292
293
294
295
296
297
298
299
300
301
302
303 ATA_WAIT_AFTER_RESET = 150,
304
305
306
307
308
309
310 ATA_TMOUT_PMP_SRST_WAIT = 5000,
311
312
313
314
315
316 ATA_TMOUT_SPURIOUS_PHY = 10000,
317
318
319 BUS_UNKNOWN = 0,
320 BUS_DMA = 1,
321 BUS_IDLE = 2,
322 BUS_NOINTR = 3,
323 BUS_NODATA = 4,
324 BUS_TIMER = 5,
325 BUS_PIO = 6,
326 BUS_EDD = 7,
327 BUS_IDENTIFY = 8,
328 BUS_PACKET = 9,
329
330
331 PORT_UNKNOWN = 0,
332 PORT_ENABLED = 1,
333 PORT_DISABLED = 2,
334
335
336
337
338 ATA_NR_PIO_MODES = 7,
339 ATA_NR_MWDMA_MODES = 5,
340 ATA_NR_UDMA_MODES = 8,
341
342 ATA_SHIFT_PIO = 0,
343 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
344 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
345
346
347 ATA_DMA_PAD_SZ = 4,
348
349
350 ATA_ERING_SIZE = 32,
351
352
353 ATA_DEFER_LINK = 1,
354 ATA_DEFER_PORT = 2,
355
356
357 ATA_EH_DESC_LEN = 80,
358
359
360 ATA_EH_REVALIDATE = (1 << 0),
361 ATA_EH_SOFTRESET = (1 << 1),
362 ATA_EH_HARDRESET = (1 << 2),
363 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
364 ATA_EH_ENABLE_LINK = (1 << 3),
365 ATA_EH_PARK = (1 << 5),
366
367 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
368 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
369 ATA_EH_ENABLE_LINK,
370
371
372 ATA_EHI_HOTPLUGGED = (1 << 0),
373 ATA_EHI_NO_AUTOPSY = (1 << 2),
374 ATA_EHI_QUIET = (1 << 3),
375 ATA_EHI_NO_RECOVERY = (1 << 4),
376
377 ATA_EHI_DID_SOFTRESET = (1 << 16),
378 ATA_EHI_DID_HARDRESET = (1 << 17),
379 ATA_EHI_PRINTINFO = (1 << 18),
380 ATA_EHI_SETMODE = (1 << 19),
381 ATA_EHI_POST_SETMODE = (1 << 20),
382
383 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
384
385
386 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
387
388
389 ATA_EH_MAX_TRIES = 5,
390
391
392 ATA_LINK_RESUME_TRIES = 5,
393
394
395 ATA_PROBE_MAX_TRIES = 3,
396 ATA_EH_DEV_TRIES = 3,
397 ATA_EH_PMP_TRIES = 5,
398 ATA_EH_PMP_LINK_TRIES = 3,
399
400 SATA_PMP_RW_TIMEOUT = 3000,
401
402
403
404
405 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
406
407
408
409
410 ATA_HORKAGE_DIAGNOSTIC = (1 << 0),
411 ATA_HORKAGE_NODMA = (1 << 1),
412 ATA_HORKAGE_NONCQ = (1 << 2),
413 ATA_HORKAGE_MAX_SEC_128 = (1 << 3),
414 ATA_HORKAGE_BROKEN_HPA = (1 << 4),
415 ATA_HORKAGE_DISABLE = (1 << 5),
416 ATA_HORKAGE_HPA_SIZE = (1 << 6),
417 ATA_HORKAGE_IVB = (1 << 8),
418 ATA_HORKAGE_STUCK_ERR = (1 << 9),
419 ATA_HORKAGE_BRIDGE_OK = (1 << 10),
420 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11),
421
422 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),
423 ATA_HORKAGE_1_5_GBPS = (1 << 13),
424 ATA_HORKAGE_NOSETXFER = (1 << 14),
425 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15),
426 ATA_HORKAGE_DUMP_ID = (1 << 16),
427 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17),
428 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18),
429 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19),
430 ATA_HORKAGE_NOLPM = (1 << 20),
431 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21),
432 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),
433 ATA_HORKAGE_NO_NCQ_LOG = (1 << 23),
434 ATA_HORKAGE_NOTRIM = (1 << 24),
435 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25),
436
437
438
439 ATA_DMA_MASK_ATA = (1 << 0),
440 ATA_DMA_MASK_ATAPI = (1 << 1),
441 ATA_DMA_MASK_CFA = (1 << 2),
442
443
444 ATAPI_READ = 0,
445 ATAPI_WRITE = 1,
446 ATAPI_READ_CD = 2,
447 ATAPI_PASS_THRU = 3,
448 ATAPI_MISC = 4,
449
450
451 ATA_TIMING_SETUP = (1 << 0),
452 ATA_TIMING_ACT8B = (1 << 1),
453 ATA_TIMING_REC8B = (1 << 2),
454 ATA_TIMING_CYC8B = (1 << 3),
455 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
456 ATA_TIMING_CYC8B,
457 ATA_TIMING_ACTIVE = (1 << 4),
458 ATA_TIMING_RECOVER = (1 << 5),
459 ATA_TIMING_DMACK_HOLD = (1 << 6),
460 ATA_TIMING_CYCLE = (1 << 7),
461 ATA_TIMING_UDMA = (1 << 8),
462 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
463 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
464 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
465 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
466 ATA_TIMING_UDMA,
467
468
469 ATA_ACPI_FILTER_SETXFER = 1 << 0,
470 ATA_ACPI_FILTER_LOCK = 1 << 1,
471 ATA_ACPI_FILTER_DIPM = 1 << 2,
472 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,
473 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,
474
475 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
476 ATA_ACPI_FILTER_LOCK |
477 ATA_ACPI_FILTER_DIPM,
478};
479
480enum ata_xfer_mask {
481 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
482 << ATA_SHIFT_PIO,
483 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
484 << ATA_SHIFT_MWDMA,
485 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
486 << ATA_SHIFT_UDMA,
487};
488
489enum hsm_task_states {
490 HSM_ST_IDLE,
491 HSM_ST_FIRST,
492
493 HSM_ST,
494 HSM_ST_LAST,
495 HSM_ST_ERR,
496};
497
498enum ata_completion_errors {
499 AC_ERR_DEV = (1 << 0),
500 AC_ERR_HSM = (1 << 1),
501 AC_ERR_TIMEOUT = (1 << 2),
502 AC_ERR_MEDIA = (1 << 3),
503 AC_ERR_ATA_BUS = (1 << 4),
504 AC_ERR_HOST_BUS = (1 << 5),
505 AC_ERR_SYSTEM = (1 << 6),
506 AC_ERR_INVALID = (1 << 7),
507 AC_ERR_OTHER = (1 << 8),
508 AC_ERR_NODEV_HINT = (1 << 9),
509 AC_ERR_NCQ = (1 << 10),
510};
511
512
513
514
515
516enum ata_lpm_policy {
517 ATA_LPM_UNKNOWN,
518 ATA_LPM_MAX_POWER,
519 ATA_LPM_MED_POWER,
520 ATA_LPM_MIN_POWER,
521};
522
523enum ata_lpm_hints {
524 ATA_LPM_EMPTY = (1 << 0),
525 ATA_LPM_HIPM = (1 << 1),
526};
527
528
529struct scsi_device;
530struct ata_port_operations;
531struct ata_port;
532struct ata_link;
533struct ata_queued_cmd;
534
535
536typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
537typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
538typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
539 unsigned long deadline);
540typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
541
542extern struct device_attribute dev_attr_link_power_management_policy;
543extern struct device_attribute dev_attr_unload_heads;
544extern struct device_attribute dev_attr_em_message_type;
545extern struct device_attribute dev_attr_em_message;
546extern struct device_attribute dev_attr_sw_activity;
547
548enum sw_activity {
549 OFF,
550 BLINK_ON,
551 BLINK_OFF,
552};
553
554struct ata_taskfile {
555 unsigned long flags;
556 u8 protocol;
557
558 u8 ctl;
559
560 u8 hob_feature;
561 u8 hob_nsect;
562 u8 hob_lbal;
563 u8 hob_lbam;
564 u8 hob_lbah;
565
566 u8 feature;
567 u8 nsect;
568 u8 lbal;
569 u8 lbam;
570 u8 lbah;
571
572 u8 device;
573
574 u8 command;
575
576 u32 auxiliary;
577
578
579};
580
581#ifdef CONFIG_ATA_SFF
582struct ata_ioports {
583 void __iomem *cmd_addr;
584 void __iomem *data_addr;
585 void __iomem *error_addr;
586 void __iomem *feature_addr;
587 void __iomem *nsect_addr;
588 void __iomem *lbal_addr;
589 void __iomem *lbam_addr;
590 void __iomem *lbah_addr;
591 void __iomem *device_addr;
592 void __iomem *status_addr;
593 void __iomem *command_addr;
594 void __iomem *altstatus_addr;
595 void __iomem *ctl_addr;
596#ifdef CONFIG_ATA_BMDMA
597 void __iomem *bmdma_addr;
598#endif
599 void __iomem *scr_addr;
600};
601#endif
602
603struct ata_host {
604 spinlock_t lock;
605 struct device *dev;
606 void __iomem * const *iomap;
607 unsigned int n_ports;
608 unsigned int n_tags;
609 void *private_data;
610 struct ata_port_operations *ops;
611 unsigned long flags;
612
613 struct mutex eh_mutex;
614 struct task_struct *eh_owner;
615
616 struct ata_port *simplex_claimed;
617 struct ata_port *ports[0];
618};
619
620struct ata_queued_cmd {
621 struct ata_port *ap;
622 struct ata_device *dev;
623
624 struct scsi_cmnd *scsicmd;
625 void (*scsidone)(struct scsi_cmnd *);
626
627 struct ata_taskfile tf;
628 u8 cdb[ATAPI_CDB_LEN];
629
630 unsigned long flags;
631 unsigned int tag;
632 unsigned int n_elem;
633 unsigned int orig_n_elem;
634
635 int dma_dir;
636
637 unsigned int sect_size;
638
639 unsigned int nbytes;
640 unsigned int extrabytes;
641 unsigned int curbytes;
642
643 struct scatterlist sgent;
644
645 struct scatterlist *sg;
646
647 struct scatterlist *cursg;
648 unsigned int cursg_ofs;
649
650 unsigned int err_mask;
651 struct ata_taskfile result_tf;
652 ata_qc_cb_t complete_fn;
653
654 void *private_data;
655 void *lldd_task;
656};
657
658struct ata_port_stats {
659 unsigned long unhandled_irq;
660 unsigned long idle_irq;
661 unsigned long rw_reqbuf;
662};
663
664struct ata_ering_entry {
665 unsigned int eflags;
666 unsigned int err_mask;
667 u64 timestamp;
668};
669
670struct ata_ering {
671 int cursor;
672 struct ata_ering_entry ring[ATA_ERING_SIZE];
673};
674
675struct ata_device {
676 struct ata_link *link;
677 unsigned int devno;
678 unsigned int horkage;
679 unsigned long flags;
680 struct scsi_device *sdev;
681 void *private_data;
682#ifdef CONFIG_ATA_ACPI
683 union acpi_object *gtf_cache;
684 unsigned int gtf_filter;
685#endif
686#ifdef CONFIG_SATA_ZPODD
687 void *zpodd;
688#endif
689 struct device tdev;
690
691 u64 n_sectors;
692 u64 n_native_sectors;
693 unsigned int class;
694 unsigned long unpark_deadline;
695
696 u8 pio_mode;
697 u8 dma_mode;
698 u8 xfer_mode;
699 unsigned int xfer_shift;
700
701 unsigned int multi_count;
702
703 unsigned int max_sectors;
704 unsigned int cdb_len;
705
706
707 unsigned long pio_mask;
708 unsigned long mwdma_mask;
709 unsigned long udma_mask;
710
711
712 u16 cylinders;
713 u16 heads;
714 u16 sectors;
715
716 union {
717 u16 id[ATA_ID_WORDS];
718 u32 gscr[SATA_PMP_GSCR_DWORDS];
719 };
720
721
722 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
723
724
725 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
726
727
728 int spdn_cnt;
729
730 struct ata_ering ering;
731};
732
733
734
735
736#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
737#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
738
739struct ata_eh_info {
740 struct ata_device *dev;
741 u32 serror;
742 unsigned int err_mask;
743 unsigned int action;
744 unsigned int dev_action[ATA_MAX_DEVICES];
745 unsigned int flags;
746
747 unsigned int probe_mask;
748
749 char desc[ATA_EH_DESC_LEN];
750 int desc_len;
751};
752
753struct ata_eh_context {
754 struct ata_eh_info i;
755 int tries[ATA_MAX_DEVICES];
756 int cmd_timeout_idx[ATA_MAX_DEVICES]
757 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
758 unsigned int classes[ATA_MAX_DEVICES];
759 unsigned int did_probe_mask;
760 unsigned int unloaded_mask;
761 unsigned int saved_ncq_enabled;
762 u8 saved_xfer_mode[ATA_MAX_DEVICES];
763
764 unsigned long last_reset;
765};
766
767struct ata_acpi_drive
768{
769 u32 pio;
770 u32 dma;
771} __packed;
772
773struct ata_acpi_gtm {
774 struct ata_acpi_drive drive[2];
775 u32 flags;
776} __packed;
777
778struct ata_link {
779 struct ata_port *ap;
780 int pmp;
781
782 struct device tdev;
783 unsigned int active_tag;
784 u32 sactive;
785
786 unsigned int flags;
787
788 u32 saved_scontrol;
789 unsigned int hw_sata_spd_limit;
790 unsigned int sata_spd_limit;
791 unsigned int sata_spd;
792 enum ata_lpm_policy lpm_policy;
793
794
795 struct ata_eh_info eh_info;
796
797 struct ata_eh_context eh_context;
798
799 struct ata_device device[ATA_MAX_DEVICES];
800
801 unsigned long last_lpm_change;
802};
803#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
804#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
805
806struct ata_port {
807 struct Scsi_Host *scsi_host;
808 struct ata_port_operations *ops;
809 spinlock_t *lock;
810
811
812 unsigned long flags;
813
814 unsigned int pflags;
815 unsigned int print_id;
816 unsigned int local_port_no;
817 unsigned int port_no;
818
819#ifdef CONFIG_ATA_SFF
820 struct ata_ioports ioaddr;
821 u8 ctl;
822 u8 last_ctl;
823 struct ata_link* sff_pio_task_link;
824 struct delayed_work sff_pio_task;
825#ifdef CONFIG_ATA_BMDMA
826 struct ata_bmdma_prd *bmdma_prd;
827 dma_addr_t bmdma_prd_dma;
828#endif
829#endif
830
831 unsigned int pio_mask;
832 unsigned int mwdma_mask;
833 unsigned int udma_mask;
834 unsigned int cbl;
835
836 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
837 unsigned long sas_tag_allocated;
838 unsigned int qc_active;
839 int nr_active_links;
840 unsigned int sas_last_tag;
841
842 struct ata_link link;
843 struct ata_link *slave_link;
844
845 int nr_pmp_links;
846 struct ata_link *pmp_link;
847 struct ata_link *excl_link;
848
849 struct ata_port_stats stats;
850 struct ata_host *host;
851 struct device *dev;
852 struct device tdev;
853
854 struct mutex scsi_scan_mutex;
855 struct delayed_work hotplug_task;
856 struct work_struct scsi_rescan_task;
857
858 unsigned int hsm_task_state;
859
860 u32 msg_enable;
861 struct list_head eh_done_q;
862 wait_queue_head_t eh_wait_q;
863 int eh_tries;
864 struct completion park_req_pending;
865
866 pm_message_t pm_mesg;
867 enum ata_lpm_policy target_lpm_policy;
868
869 struct timer_list fastdrain_timer;
870 unsigned long fastdrain_cnt;
871
872 int em_message_type;
873 void *private_data;
874
875#ifdef CONFIG_ATA_ACPI
876 struct ata_acpi_gtm __acpi_init_gtm;
877#endif
878
879 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
880};
881
882
883
884
885
886
887#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
888
889struct ata_port_operations {
890
891
892
893 int (*qc_defer)(struct ata_queued_cmd *qc);
894 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
895 void (*qc_prep)(struct ata_queued_cmd *qc);
896 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
897 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
898
899
900
901
902 int (*cable_detect)(struct ata_port *ap);
903 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
904 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
905 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
906 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
907 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
908
909 void (*dev_config)(struct ata_device *dev);
910
911 void (*freeze)(struct ata_port *ap);
912 void (*thaw)(struct ata_port *ap);
913 ata_prereset_fn_t prereset;
914 ata_reset_fn_t softreset;
915 ata_reset_fn_t hardreset;
916 ata_postreset_fn_t postreset;
917 ata_prereset_fn_t pmp_prereset;
918 ata_reset_fn_t pmp_softreset;
919 ata_reset_fn_t pmp_hardreset;
920 ata_postreset_fn_t pmp_postreset;
921 void (*error_handler)(struct ata_port *ap);
922 void (*lost_interrupt)(struct ata_port *ap);
923 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
924 void (*sched_eh)(struct ata_port *ap);
925 void (*end_eh)(struct ata_port *ap);
926
927
928
929
930 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
931 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
932 void (*pmp_attach)(struct ata_port *ap);
933 void (*pmp_detach)(struct ata_port *ap);
934 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
935 unsigned hints);
936
937
938
939
940 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
941 int (*port_resume)(struct ata_port *ap);
942 int (*port_start)(struct ata_port *ap);
943 void (*port_stop)(struct ata_port *ap);
944 void (*host_stop)(struct ata_host *host);
945
946#ifdef CONFIG_ATA_SFF
947
948
949
950 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
951 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
952 u8 (*sff_check_status)(struct ata_port *ap);
953 u8 (*sff_check_altstatus)(struct ata_port *ap);
954 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
955 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
956 void (*sff_exec_command)(struct ata_port *ap,
957 const struct ata_taskfile *tf);
958 unsigned int (*sff_data_xfer)(struct ata_device *dev,
959 unsigned char *buf, unsigned int buflen, int rw);
960 void (*sff_irq_on)(struct ata_port *);
961 bool (*sff_irq_check)(struct ata_port *);
962 void (*sff_irq_clear)(struct ata_port *);
963 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
964
965#ifdef CONFIG_ATA_BMDMA
966 void (*bmdma_setup)(struct ata_queued_cmd *qc);
967 void (*bmdma_start)(struct ata_queued_cmd *qc);
968 void (*bmdma_stop)(struct ata_queued_cmd *qc);
969 u8 (*bmdma_status)(struct ata_port *ap);
970#endif
971#endif
972
973 ssize_t (*em_show)(struct ata_port *ap, char *buf);
974 ssize_t (*em_store)(struct ata_port *ap, const char *message,
975 size_t size);
976 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
977 ssize_t (*sw_activity_store)(struct ata_device *dev,
978 enum sw_activity val);
979 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
980 ssize_t size);
981
982
983
984
985 void (*phy_reset)(struct ata_port *ap);
986 void (*eng_timeout)(struct ata_port *ap);
987
988
989
990
991
992 const struct ata_port_operations *inherits;
993};
994
995struct ata_port_info {
996 unsigned long flags;
997 unsigned long link_flags;
998 unsigned long pio_mask;
999 unsigned long mwdma_mask;
1000 unsigned long udma_mask;
1001 struct ata_port_operations *port_ops;
1002 void *private_data;
1003};
1004
1005struct ata_timing {
1006 unsigned short mode;
1007 unsigned short setup;
1008 unsigned short act8b;
1009 unsigned short rec8b;
1010 unsigned short cyc8b;
1011 unsigned short active;
1012 unsigned short recover;
1013 unsigned short dmack_hold;
1014 unsigned short cycle;
1015 unsigned short udma;
1016};
1017
1018
1019
1020
1021extern const unsigned long sata_deb_timing_normal[];
1022extern const unsigned long sata_deb_timing_hotplug[];
1023extern const unsigned long sata_deb_timing_long[];
1024
1025extern struct ata_port_operations ata_dummy_port_ops;
1026extern const struct ata_port_info ata_dummy_port_info;
1027
1028
1029
1030
1031static inline unsigned int ata_prot_flags(u8 prot)
1032{
1033 switch (prot) {
1034 case ATA_PROT_NODATA:
1035 return 0;
1036 case ATA_PROT_PIO:
1037 return ATA_PROT_FLAG_PIO;
1038 case ATA_PROT_DMA:
1039 return ATA_PROT_FLAG_DMA;
1040 case ATA_PROT_NCQ:
1041 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
1042 case ATAPI_PROT_NODATA:
1043 return ATA_PROT_FLAG_ATAPI;
1044 case ATAPI_PROT_PIO:
1045 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
1046 case ATAPI_PROT_DMA:
1047 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
1048 }
1049 return 0;
1050}
1051
1052static inline int ata_is_atapi(u8 prot)
1053{
1054 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
1055}
1056
1057static inline int ata_is_nodata(u8 prot)
1058{
1059 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
1060}
1061
1062static inline int ata_is_pio(u8 prot)
1063{
1064 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
1065}
1066
1067static inline int ata_is_dma(u8 prot)
1068{
1069 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
1070}
1071
1072static inline int ata_is_ncq(u8 prot)
1073{
1074 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
1075}
1076
1077static inline int ata_is_data(u8 prot)
1078{
1079 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
1080}
1081
1082static inline int is_multi_taskfile(struct ata_taskfile *tf)
1083{
1084 return (tf->command == ATA_CMD_READ_MULTI) ||
1085 (tf->command == ATA_CMD_WRITE_MULTI) ||
1086 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1087 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1088 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1089}
1090
1091static inline const unsigned long *
1092sata_ehc_deb_timing(struct ata_eh_context *ehc)
1093{
1094 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1095 return sata_deb_timing_hotplug;
1096 else
1097 return sata_deb_timing_normal;
1098}
1099
1100static inline int ata_port_is_dummy(struct ata_port *ap)
1101{
1102 return ap->ops == &ata_dummy_port_ops;
1103}
1104
1105extern int sata_set_spd(struct ata_link *link);
1106extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1107extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1108 int (*check_ready)(struct ata_link *link));
1109extern int sata_link_debounce(struct ata_link *link,
1110 const unsigned long *params, unsigned long deadline);
1111extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1112 unsigned long deadline);
1113extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1114 bool spm_wakeup);
1115extern int sata_link_hardreset(struct ata_link *link,
1116 const unsigned long *timing, unsigned long deadline,
1117 bool *online, int (*check_ready)(struct ata_link *));
1118extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1119 unsigned long deadline);
1120extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1121
1122extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1123extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1124 const struct ata_port_info * const * ppi, int n_ports);
1125extern int ata_slave_link_init(struct ata_port *ap);
1126extern int ata_host_start(struct ata_host *host);
1127extern int ata_host_register(struct ata_host *host,
1128 struct scsi_host_template *sht);
1129extern int ata_host_activate(struct ata_host *host, int irq,
1130 irq_handler_t irq_handler, unsigned long irq_flags,
1131 struct scsi_host_template *sht);
1132extern void ata_host_detach(struct ata_host *host);
1133extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1134extern int ata_scsi_detect(struct scsi_host_template *sht);
1135extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
1136extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1137extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1138 int cmd, void __user *arg);
1139extern void ata_sas_port_destroy(struct ata_port *);
1140extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1141 struct ata_port_info *, struct Scsi_Host *);
1142extern void ata_sas_async_probe(struct ata_port *ap);
1143extern int ata_sas_sync_probe(struct ata_port *ap);
1144extern int ata_sas_port_init(struct ata_port *);
1145extern int ata_sas_port_start(struct ata_port *ap);
1146extern void ata_sas_port_stop(struct ata_port *ap);
1147extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1148extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1149extern int sata_scr_valid(struct ata_link *link);
1150extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1151extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1152extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1153extern bool ata_link_online(struct ata_link *link);
1154extern bool ata_link_offline(struct ata_link *link);
1155#ifdef CONFIG_PM
1156extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1157extern void ata_host_resume(struct ata_host *host);
1158extern void ata_sas_port_suspend(struct ata_port *ap);
1159extern void ata_sas_port_resume(struct ata_port *ap);
1160#else
1161static inline void ata_sas_port_suspend(struct ata_port *ap)
1162{
1163}
1164static inline void ata_sas_port_resume(struct ata_port *ap)
1165{
1166}
1167#endif
1168extern int ata_ratelimit(void);
1169extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1170extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1171 u32 val, unsigned long interval, unsigned long timeout);
1172extern int atapi_cmd_type(u8 opcode);
1173extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1174 u8 pmp, int is_cmd, u8 *fis);
1175extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1176extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1177 unsigned long mwdma_mask, unsigned long udma_mask);
1178extern void ata_unpack_xfermask(unsigned long xfer_mask,
1179 unsigned long *pio_mask, unsigned long *mwdma_mask,
1180 unsigned long *udma_mask);
1181extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1182extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1183extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1184extern const char *ata_mode_string(unsigned long xfer_mask);
1185extern unsigned long ata_id_xfermask(const u16 *id);
1186extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1187extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1188extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1189 unsigned int n_elem);
1190extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1191extern void ata_dev_disable(struct ata_device *adev);
1192extern void ata_id_string(const u16 *id, unsigned char *s,
1193 unsigned int ofs, unsigned int len);
1194extern void ata_id_c_string(const u16 *id, unsigned char *s,
1195 unsigned int ofs, unsigned int len);
1196extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1197 struct ata_taskfile *tf, u16 *id);
1198extern void ata_qc_complete(struct ata_queued_cmd *qc);
1199extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1200extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1201extern int ata_std_bios_param(struct scsi_device *sdev,
1202 struct block_device *bdev,
1203 sector_t capacity, int geom[]);
1204extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1205extern int ata_scsi_slave_config(struct scsi_device *sdev);
1206extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1207extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1208 int queue_depth);
1209extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1210 int queue_depth);
1211extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1212extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1213extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1214extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1215extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1216
1217extern int ata_cable_40wire(struct ata_port *ap);
1218extern int ata_cable_80wire(struct ata_port *ap);
1219extern int ata_cable_sata(struct ata_port *ap);
1220extern int ata_cable_ignore(struct ata_port *ap);
1221extern int ata_cable_unknown(struct ata_port *ap);
1222
1223
1224extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1225extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1226extern int ata_timing_compute(struct ata_device *, unsigned short,
1227 struct ata_timing *, int, int);
1228extern void ata_timing_merge(const struct ata_timing *,
1229 const struct ata_timing *, struct ata_timing *,
1230 unsigned int);
1231extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1232
1233
1234#ifdef CONFIG_PCI
1235struct pci_dev;
1236
1237struct pci_bits {
1238 unsigned int reg;
1239 unsigned int width;
1240 unsigned long mask;
1241 unsigned long val;
1242};
1243
1244extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1245extern void ata_pci_remove_one(struct pci_dev *pdev);
1246
1247#ifdef CONFIG_PM
1248extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1249extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1250extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1251extern int ata_pci_device_resume(struct pci_dev *pdev);
1252#endif
1253#endif
1254
1255struct platform_device;
1256
1257extern int ata_platform_remove_one(struct platform_device *pdev);
1258
1259
1260
1261
1262#ifdef CONFIG_ATA_ACPI
1263static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1264{
1265 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1266 return &ap->__acpi_init_gtm;
1267 return NULL;
1268}
1269int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1270int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1271unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1272 const struct ata_acpi_gtm *gtm);
1273int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1274#else
1275static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1276{
1277 return NULL;
1278}
1279
1280static inline int ata_acpi_stm(const struct ata_port *ap,
1281 struct ata_acpi_gtm *stm)
1282{
1283 return -ENOSYS;
1284}
1285
1286static inline int ata_acpi_gtm(const struct ata_port *ap,
1287 struct ata_acpi_gtm *stm)
1288{
1289 return -ENOSYS;
1290}
1291
1292static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1293 const struct ata_acpi_gtm *gtm)
1294{
1295 return 0;
1296}
1297
1298static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1299 const struct ata_acpi_gtm *gtm)
1300{
1301 return 0;
1302}
1303#endif
1304
1305
1306
1307
1308extern void ata_port_schedule_eh(struct ata_port *ap);
1309extern void ata_port_wait_eh(struct ata_port *ap);
1310extern int ata_link_abort(struct ata_link *link);
1311extern int ata_port_abort(struct ata_port *ap);
1312extern int ata_port_freeze(struct ata_port *ap);
1313extern int sata_async_notification(struct ata_port *ap);
1314
1315extern void ata_eh_freeze_port(struct ata_port *ap);
1316extern void ata_eh_thaw_port(struct ata_port *ap);
1317
1318extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1319extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1320extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1321
1322extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1323 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1324 ata_postreset_fn_t postreset);
1325extern void ata_std_error_handler(struct ata_port *ap);
1326extern void ata_std_sched_eh(struct ata_port *ap);
1327extern void ata_std_end_eh(struct ata_port *ap);
1328extern int ata_link_nr_enabled(struct ata_link *link);
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351extern const struct ata_port_operations ata_base_port_ops;
1352extern const struct ata_port_operations sata_port_ops;
1353extern struct device_attribute *ata_common_sdev_attrs[];
1354
1355
1356
1357
1358
1359
1360
1361#define ATA_BASE_SHT(drv_name) \
1362 .module = THIS_MODULE, \
1363 .name = drv_name, \
1364 .ioctl = ata_scsi_ioctl, \
1365 .queuecommand = ata_scsi_queuecmd, \
1366 .can_queue = ATA_DEF_QUEUE, \
1367 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1368 .this_id = ATA_SHT_THIS_ID, \
1369 .emulated = ATA_SHT_EMULATED, \
1370 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1371 .proc_name = drv_name, \
1372 .slave_configure = ata_scsi_slave_config, \
1373 .slave_destroy = ata_scsi_slave_destroy, \
1374 .bios_param = ata_std_bios_param, \
1375 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1376 .sdev_attrs = ata_common_sdev_attrs
1377
1378#define ATA_NCQ_SHT(drv_name) \
1379 ATA_BASE_SHT(drv_name), \
1380 .change_queue_depth = ata_scsi_change_queue_depth
1381
1382
1383
1384
1385#ifdef CONFIG_SATA_PMP
1386static inline bool sata_pmp_supported(struct ata_port *ap)
1387{
1388 return ap->flags & ATA_FLAG_PMP;
1389}
1390
1391static inline bool sata_pmp_attached(struct ata_port *ap)
1392{
1393 return ap->nr_pmp_links != 0;
1394}
1395
1396static inline int ata_is_host_link(const struct ata_link *link)
1397{
1398 return link == &link->ap->link || link == link->ap->slave_link;
1399}
1400#else
1401static inline bool sata_pmp_supported(struct ata_port *ap)
1402{
1403 return false;
1404}
1405
1406static inline bool sata_pmp_attached(struct ata_port *ap)
1407{
1408 return false;
1409}
1410
1411static inline int ata_is_host_link(const struct ata_link *link)
1412{
1413 return 1;
1414}
1415#endif
1416
1417static inline int sata_srst_pmp(struct ata_link *link)
1418{
1419 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1420 return SATA_PMP_CTRL_PORT;
1421 return link->pmp;
1422}
1423
1424
1425
1426
1427__printf(3, 4)
1428void ata_port_printk(const struct ata_port *ap, const char *level,
1429 const char *fmt, ...);
1430__printf(3, 4)
1431void ata_link_printk(const struct ata_link *link, const char *level,
1432 const char *fmt, ...);
1433__printf(3, 4)
1434void ata_dev_printk(const struct ata_device *dev, const char *level,
1435 const char *fmt, ...);
1436
1437#define ata_port_err(ap, fmt, ...) \
1438 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1439#define ata_port_warn(ap, fmt, ...) \
1440 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1441#define ata_port_notice(ap, fmt, ...) \
1442 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1443#define ata_port_info(ap, fmt, ...) \
1444 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1445#define ata_port_dbg(ap, fmt, ...) \
1446 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1447
1448#define ata_link_err(link, fmt, ...) \
1449 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1450#define ata_link_warn(link, fmt, ...) \
1451 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1452#define ata_link_notice(link, fmt, ...) \
1453 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1454#define ata_link_info(link, fmt, ...) \
1455 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1456#define ata_link_dbg(link, fmt, ...) \
1457 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1458
1459#define ata_dev_err(dev, fmt, ...) \
1460 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1461#define ata_dev_warn(dev, fmt, ...) \
1462 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1463#define ata_dev_notice(dev, fmt, ...) \
1464 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1465#define ata_dev_info(dev, fmt, ...) \
1466 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1467#define ata_dev_dbg(dev, fmt, ...) \
1468 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1469
1470void ata_print_version(const struct device *dev, const char *version);
1471
1472
1473
1474
1475extern __printf(2, 3)
1476void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1477extern __printf(2, 3)
1478void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1479extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1480
1481static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1482{
1483 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1484 ehi->flags |= ATA_EHI_HOTPLUGGED;
1485 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1486 ehi->err_mask |= AC_ERR_ATA_BUS;
1487}
1488
1489
1490
1491
1492extern __printf(2, 3)
1493void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1494#ifdef CONFIG_PCI
1495extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1496 const char *name);
1497#endif
1498
1499static inline unsigned int ata_tag_valid(unsigned int tag)
1500{
1501 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1502}
1503
1504static inline unsigned int ata_tag_internal(unsigned int tag)
1505{
1506 return tag == ATA_TAG_INTERNAL;
1507}
1508
1509
1510
1511
1512static inline unsigned int ata_class_enabled(unsigned int class)
1513{
1514 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1515 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1516 class == ATA_DEV_ZAC;
1517}
1518
1519static inline unsigned int ata_class_disabled(unsigned int class)
1520{
1521 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1522 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
1523}
1524
1525static inline unsigned int ata_class_absent(unsigned int class)
1526{
1527 return !ata_class_enabled(class) && !ata_class_disabled(class);
1528}
1529
1530static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1531{
1532 return ata_class_enabled(dev->class);
1533}
1534
1535static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1536{
1537 return ata_class_disabled(dev->class);
1538}
1539
1540static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1541{
1542 return ata_class_absent(dev->class);
1543}
1544
1545
1546
1547
1548static inline int ata_link_max_devices(const struct ata_link *link)
1549{
1550 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1551 return 2;
1552 return 1;
1553}
1554
1555static inline int ata_link_active(struct ata_link *link)
1556{
1557 return ata_tag_valid(link->active_tag) || link->sactive;
1558}
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572enum ata_link_iter_mode {
1573 ATA_LITER_EDGE,
1574
1575 ATA_LITER_HOST_FIRST,
1576 ATA_LITER_PMP_FIRST,
1577
1578};
1579
1580enum ata_dev_iter_mode {
1581 ATA_DITER_ENABLED,
1582 ATA_DITER_ENABLED_REVERSE,
1583 ATA_DITER_ALL,
1584 ATA_DITER_ALL_REVERSE,
1585};
1586
1587extern struct ata_link *ata_link_next(struct ata_link *link,
1588 struct ata_port *ap,
1589 enum ata_link_iter_mode mode);
1590
1591extern struct ata_device *ata_dev_next(struct ata_device *dev,
1592 struct ata_link *link,
1593 enum ata_dev_iter_mode mode);
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609#define ata_for_each_link(link, ap, mode) \
1610 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1611 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1612
1613#define ata_for_each_dev(dev, link, mode) \
1614 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1615 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627static inline int ata_ncq_enabled(struct ata_device *dev)
1628{
1629 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1630 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1631}
1632
1633static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1634{
1635 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1636 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1637 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1638}
1639
1640static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1641{
1642 qc->tf.ctl |= ATA_NIEN;
1643}
1644
1645static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1646 unsigned int tag)
1647{
1648 if (likely(ata_tag_valid(tag)))
1649 return &ap->qcmd[tag];
1650 return NULL;
1651}
1652
1653static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1654 unsigned int tag)
1655{
1656 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1657
1658 if (unlikely(!qc) || !ap->ops->error_handler)
1659 return qc;
1660
1661 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1662 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1663 return qc;
1664
1665 return NULL;
1666}
1667
1668static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1669{
1670 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1671}
1672
1673static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1674{
1675 memset(tf, 0, sizeof(*tf));
1676
1677#ifdef CONFIG_ATA_SFF
1678 tf->ctl = dev->link->ap->ctl;
1679#else
1680 tf->ctl = ATA_DEVCTL_OBS;
1681#endif
1682 if (dev->devno == 0)
1683 tf->device = ATA_DEVICE_OBS;
1684 else
1685 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1686}
1687
1688static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1689{
1690 qc->dma_dir = DMA_NONE;
1691 qc->sg = NULL;
1692 qc->flags = 0;
1693 qc->cursg = NULL;
1694 qc->cursg_ofs = 0;
1695 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1696 qc->n_elem = 0;
1697 qc->err_mask = 0;
1698 qc->sect_size = ATA_SECT_SIZE;
1699
1700 ata_tf_init(qc->dev, &qc->tf);
1701
1702
1703 qc->result_tf.command = ATA_DRDY;
1704 qc->result_tf.feature = 0;
1705}
1706
1707static inline int ata_try_flush_cache(const struct ata_device *dev)
1708{
1709 return ata_id_wcache_enabled(dev->id) ||
1710 ata_id_has_flush(dev->id) ||
1711 ata_id_has_flush_ext(dev->id);
1712}
1713
1714static inline unsigned int ac_err_mask(u8 status)
1715{
1716 if (status & (ATA_BUSY | ATA_DRQ))
1717 return AC_ERR_HSM;
1718 if (status & (ATA_ERR | ATA_DF))
1719 return AC_ERR_DEV;
1720 return 0;
1721}
1722
1723static inline unsigned int __ac_err_mask(u8 status)
1724{
1725 unsigned int mask = ac_err_mask(status);
1726 if (mask == 0)
1727 return AC_ERR_OTHER;
1728 return mask;
1729}
1730
1731static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1732{
1733 return *(struct ata_port **)&host->hostdata[0];
1734}
1735
1736static inline int ata_check_ready(u8 status)
1737{
1738 if (!(status & ATA_BUSY))
1739 return 1;
1740
1741
1742 if (status == 0xff)
1743 return -ENODEV;
1744
1745 return 0;
1746}
1747
1748static inline unsigned long ata_deadline(unsigned long from_jiffies,
1749 unsigned long timeout_msecs)
1750{
1751 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1752}
1753
1754
1755
1756
1757
1758static inline int ata_using_mwdma(struct ata_device *adev)
1759{
1760 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1761 return 1;
1762 return 0;
1763}
1764
1765static inline int ata_using_udma(struct ata_device *adev)
1766{
1767 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1768 return 1;
1769 return 0;
1770}
1771
1772static inline int ata_dma_enabled(struct ata_device *adev)
1773{
1774 return (adev->dma_mode == 0xFF ? 0 : 1);
1775}
1776
1777
1778
1779
1780#ifdef CONFIG_SATA_PMP
1781
1782extern const struct ata_port_operations sata_pmp_port_ops;
1783
1784extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1785extern void sata_pmp_error_handler(struct ata_port *ap);
1786
1787#else
1788
1789#define sata_pmp_port_ops sata_port_ops
1790#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1791#define sata_pmp_error_handler ata_std_error_handler
1792
1793#endif
1794
1795
1796
1797
1798
1799#ifdef CONFIG_ATA_SFF
1800
1801extern const struct ata_port_operations ata_sff_port_ops;
1802extern const struct ata_port_operations ata_bmdma32_port_ops;
1803
1804
1805#define ATA_PIO_SHT(drv_name) \
1806 ATA_BASE_SHT(drv_name), \
1807 .sg_tablesize = LIBATA_MAX_PRD, \
1808 .dma_boundary = ATA_DMA_BOUNDARY
1809
1810extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1811extern u8 ata_sff_check_status(struct ata_port *ap);
1812extern void ata_sff_pause(struct ata_port *ap);
1813extern void ata_sff_dma_pause(struct ata_port *ap);
1814extern int ata_sff_busy_sleep(struct ata_port *ap,
1815 unsigned long timeout_pat, unsigned long timeout);
1816extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1817extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1818extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1819extern void ata_sff_exec_command(struct ata_port *ap,
1820 const struct ata_taskfile *tf);
1821extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
1822 unsigned char *buf, unsigned int buflen, int rw);
1823extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1824 unsigned char *buf, unsigned int buflen, int rw);
1825extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
1826 unsigned char *buf, unsigned int buflen, int rw);
1827extern void ata_sff_irq_on(struct ata_port *ap);
1828extern void ata_sff_irq_clear(struct ata_port *ap);
1829extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1830 u8 status, int in_wq);
1831extern void ata_sff_queue_work(struct work_struct *work);
1832extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1833 unsigned long delay);
1834extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1835extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1836extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1837extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1838 struct ata_queued_cmd *qc);
1839extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1840extern void ata_sff_lost_interrupt(struct ata_port *ap);
1841extern void ata_sff_freeze(struct ata_port *ap);
1842extern void ata_sff_thaw(struct ata_port *ap);
1843extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1844extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1845 u8 *r_err);
1846extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1847 unsigned long deadline);
1848extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1849 unsigned long deadline);
1850extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1851 unsigned long deadline);
1852extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1853extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1854extern void ata_sff_error_handler(struct ata_port *ap);
1855extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1856#ifdef CONFIG_PCI
1857extern int ata_pci_sff_init_host(struct ata_host *host);
1858extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1859 const struct ata_port_info * const * ppi,
1860 struct ata_host **r_host);
1861extern int ata_pci_sff_activate_host(struct ata_host *host,
1862 irq_handler_t irq_handler,
1863 struct scsi_host_template *sht);
1864extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1865 const struct ata_port_info * const * ppi,
1866 struct scsi_host_template *sht, void *host_priv, int hflags);
1867#endif
1868
1869#ifdef CONFIG_ATA_BMDMA
1870
1871extern const struct ata_port_operations ata_bmdma_port_ops;
1872
1873#define ATA_BMDMA_SHT(drv_name) \
1874 ATA_BASE_SHT(drv_name), \
1875 .sg_tablesize = LIBATA_MAX_PRD, \
1876 .dma_boundary = ATA_DMA_BOUNDARY
1877
1878extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1879extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1880extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1881extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1882 struct ata_queued_cmd *qc);
1883extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1884extern void ata_bmdma_error_handler(struct ata_port *ap);
1885extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1886extern void ata_bmdma_irq_clear(struct ata_port *ap);
1887extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1888extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1889extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1890extern u8 ata_bmdma_status(struct ata_port *ap);
1891extern int ata_bmdma_port_start(struct ata_port *ap);
1892extern int ata_bmdma_port_start32(struct ata_port *ap);
1893
1894#ifdef CONFIG_PCI
1895extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1896extern void ata_pci_bmdma_init(struct ata_host *host);
1897extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1898 const struct ata_port_info * const * ppi,
1899 struct ata_host **r_host);
1900extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1901 const struct ata_port_info * const * ppi,
1902 struct scsi_host_template *sht,
1903 void *host_priv, int hflags);
1904#endif
1905#endif
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1921 unsigned int max)
1922{
1923 u8 status;
1924
1925 do {
1926 udelay(10);
1927 status = ap->ops->sff_check_status(ap);
1928 max--;
1929 } while (status != 0xff && (status & bits) && (max > 0));
1930
1931 return status;
1932}
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944static inline u8 ata_wait_idle(struct ata_port *ap)
1945{
1946 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1947
1948#ifdef ATA_DEBUG
1949 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1950 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1951 status);
1952#endif
1953
1954 return status;
1955}
1956#endif
1957
1958#endif
1959