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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 ATA_LFLAG_NO_DB_DELAY = (1 << 11),
209
210
211 ATA_FLAG_SLAVE_POSS = (1 << 0),
212
213 ATA_FLAG_SATA = (1 << 1),
214 ATA_FLAG_NO_LOG_PAGE = (1 << 5),
215 ATA_FLAG_NO_ATAPI = (1 << 6),
216 ATA_FLAG_PIO_DMA = (1 << 7),
217 ATA_FLAG_PIO_LBA48 = (1 << 8),
218 ATA_FLAG_PIO_POLLING = (1 << 9),
219
220 ATA_FLAG_NCQ = (1 << 10),
221 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11),
222 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12),
223 ATA_FLAG_DEBUGMSG = (1 << 13),
224 ATA_FLAG_FPDMA_AA = (1 << 14),
225 ATA_FLAG_IGN_SIMPLEX = (1 << 15),
226 ATA_FLAG_NO_IORDY = (1 << 16),
227 ATA_FLAG_ACPI_SATA = (1 << 17),
228 ATA_FLAG_AN = (1 << 18),
229 ATA_FLAG_PMP = (1 << 19),
230 ATA_FLAG_FPDMA_AUX = (1 << 20),
231 ATA_FLAG_EM = (1 << 21),
232
233 ATA_FLAG_SW_ACTIVITY = (1 << 22),
234
235 ATA_FLAG_NO_DIPM = (1 << 23),
236 ATA_FLAG_SAS_HOST = (1 << 24),
237
238
239
240
241
242 ATA_PFLAG_EH_PENDING = (1 << 0),
243 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1),
244 ATA_PFLAG_FROZEN = (1 << 2),
245 ATA_PFLAG_RECOVERED = (1 << 3),
246 ATA_PFLAG_LOADING = (1 << 4),
247 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6),
248 ATA_PFLAG_INITIALIZING = (1 << 7),
249 ATA_PFLAG_RESETTING = (1 << 8),
250 ATA_PFLAG_UNLOADING = (1 << 9),
251 ATA_PFLAG_UNLOADED = (1 << 10),
252
253 ATA_PFLAG_SUSPENDED = (1 << 17),
254 ATA_PFLAG_PM_PENDING = (1 << 18),
255 ATA_PFLAG_INIT_GTM_VALID = (1 << 19),
256
257 ATA_PFLAG_PIO32 = (1 << 20),
258 ATA_PFLAG_PIO32CHANGE = (1 << 21),
259 ATA_PFLAG_EXTERNAL = (1 << 22),
260
261
262 ATA_QCFLAG_ACTIVE = (1 << 0),
263 ATA_QCFLAG_DMAMAP = (1 << 1),
264 ATA_QCFLAG_IO = (1 << 3),
265 ATA_QCFLAG_RESULT_TF = (1 << 4),
266 ATA_QCFLAG_CLEAR_EXCL = (1 << 5),
267 ATA_QCFLAG_QUIET = (1 << 6),
268 ATA_QCFLAG_RETRY = (1 << 7),
269
270 ATA_QCFLAG_FAILED = (1 << 16),
271 ATA_QCFLAG_SENSE_VALID = (1 << 17),
272 ATA_QCFLAG_EH_SCHEDULED = (1 << 18),
273
274
275 ATA_HOST_SIMPLEX = (1 << 0),
276 ATA_HOST_STARTED = (1 << 1),
277 ATA_HOST_PARALLEL_SCAN = (1 << 2),
278 ATA_HOST_IGNORE_ATA = (1 << 3),
279
280
281
282
283 ATA_TMOUT_BOOT = 30000,
284 ATA_TMOUT_BOOT_QUICK = 7000,
285 ATA_TMOUT_INTERNAL_QUICK = 5000,
286 ATA_TMOUT_MAX_PARK = 30000,
287
288
289
290
291
292
293 ATA_TMOUT_FF_WAIT_LONG = 2000,
294 ATA_TMOUT_FF_WAIT = 800,
295
296
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298
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301
302
303
304
305
306 ATA_WAIT_AFTER_RESET = 150,
307
308
309
310
311
312
313 ATA_TMOUT_PMP_SRST_WAIT = 5000,
314
315
316
317
318
319 ATA_TMOUT_SPURIOUS_PHY = 10000,
320
321
322 BUS_UNKNOWN = 0,
323 BUS_DMA = 1,
324 BUS_IDLE = 2,
325 BUS_NOINTR = 3,
326 BUS_NODATA = 4,
327 BUS_TIMER = 5,
328 BUS_PIO = 6,
329 BUS_EDD = 7,
330 BUS_IDENTIFY = 8,
331 BUS_PACKET = 9,
332
333
334 PORT_UNKNOWN = 0,
335 PORT_ENABLED = 1,
336 PORT_DISABLED = 2,
337
338
339
340
341 ATA_NR_PIO_MODES = 7,
342 ATA_NR_MWDMA_MODES = 5,
343 ATA_NR_UDMA_MODES = 8,
344
345 ATA_SHIFT_PIO = 0,
346 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
347 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
348
349
350 ATA_DMA_PAD_SZ = 4,
351
352
353 ATA_ERING_SIZE = 32,
354
355
356 ATA_DEFER_LINK = 1,
357 ATA_DEFER_PORT = 2,
358
359
360 ATA_EH_DESC_LEN = 80,
361
362
363 ATA_EH_REVALIDATE = (1 << 0),
364 ATA_EH_SOFTRESET = (1 << 1),
365 ATA_EH_HARDRESET = (1 << 2),
366 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
367 ATA_EH_ENABLE_LINK = (1 << 3),
368 ATA_EH_PARK = (1 << 5),
369
370 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
371 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
372 ATA_EH_ENABLE_LINK,
373
374
375 ATA_EHI_HOTPLUGGED = (1 << 0),
376 ATA_EHI_NO_AUTOPSY = (1 << 2),
377 ATA_EHI_QUIET = (1 << 3),
378 ATA_EHI_NO_RECOVERY = (1 << 4),
379
380 ATA_EHI_DID_SOFTRESET = (1 << 16),
381 ATA_EHI_DID_HARDRESET = (1 << 17),
382 ATA_EHI_PRINTINFO = (1 << 18),
383 ATA_EHI_SETMODE = (1 << 19),
384 ATA_EHI_POST_SETMODE = (1 << 20),
385
386 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
387
388
389 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
390
391
392 ATA_EH_MAX_TRIES = 5,
393
394
395 ATA_LINK_RESUME_TRIES = 5,
396
397
398 ATA_PROBE_MAX_TRIES = 3,
399 ATA_EH_DEV_TRIES = 3,
400 ATA_EH_PMP_TRIES = 5,
401 ATA_EH_PMP_LINK_TRIES = 3,
402
403 SATA_PMP_RW_TIMEOUT = 3000,
404
405
406
407
408 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
409
410
411
412
413 ATA_HORKAGE_DIAGNOSTIC = (1 << 0),
414 ATA_HORKAGE_NODMA = (1 << 1),
415 ATA_HORKAGE_NONCQ = (1 << 2),
416 ATA_HORKAGE_MAX_SEC_128 = (1 << 3),
417 ATA_HORKAGE_BROKEN_HPA = (1 << 4),
418 ATA_HORKAGE_DISABLE = (1 << 5),
419 ATA_HORKAGE_HPA_SIZE = (1 << 6),
420 ATA_HORKAGE_IVB = (1 << 8),
421 ATA_HORKAGE_STUCK_ERR = (1 << 9),
422 ATA_HORKAGE_BRIDGE_OK = (1 << 10),
423 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11),
424
425 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),
426 ATA_HORKAGE_1_5_GBPS = (1 << 13),
427 ATA_HORKAGE_NOSETXFER = (1 << 14),
428 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15),
429 ATA_HORKAGE_DUMP_ID = (1 << 16),
430 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17),
431 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18),
432 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19),
433 ATA_HORKAGE_NOLPM = (1 << 20),
434 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21),
435 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),
436 ATA_HORKAGE_NO_NCQ_LOG = (1 << 23),
437 ATA_HORKAGE_NOTRIM = (1 << 24),
438 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25),
439
440
441
442 ATA_DMA_MASK_ATA = (1 << 0),
443 ATA_DMA_MASK_ATAPI = (1 << 1),
444 ATA_DMA_MASK_CFA = (1 << 2),
445
446
447 ATAPI_READ = 0,
448 ATAPI_WRITE = 1,
449 ATAPI_READ_CD = 2,
450 ATAPI_PASS_THRU = 3,
451 ATAPI_MISC = 4,
452
453
454 ATA_TIMING_SETUP = (1 << 0),
455 ATA_TIMING_ACT8B = (1 << 1),
456 ATA_TIMING_REC8B = (1 << 2),
457 ATA_TIMING_CYC8B = (1 << 3),
458 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
459 ATA_TIMING_CYC8B,
460 ATA_TIMING_ACTIVE = (1 << 4),
461 ATA_TIMING_RECOVER = (1 << 5),
462 ATA_TIMING_DMACK_HOLD = (1 << 6),
463 ATA_TIMING_CYCLE = (1 << 7),
464 ATA_TIMING_UDMA = (1 << 8),
465 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
466 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
467 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
468 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
469 ATA_TIMING_UDMA,
470
471
472 ATA_ACPI_FILTER_SETXFER = 1 << 0,
473 ATA_ACPI_FILTER_LOCK = 1 << 1,
474 ATA_ACPI_FILTER_DIPM = 1 << 2,
475 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,
476 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,
477
478 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
479 ATA_ACPI_FILTER_LOCK |
480 ATA_ACPI_FILTER_DIPM,
481};
482
483enum ata_xfer_mask {
484 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
485 << ATA_SHIFT_PIO,
486 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
487 << ATA_SHIFT_MWDMA,
488 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
489 << ATA_SHIFT_UDMA,
490};
491
492enum hsm_task_states {
493 HSM_ST_IDLE,
494 HSM_ST_FIRST,
495
496 HSM_ST,
497 HSM_ST_LAST,
498 HSM_ST_ERR,
499};
500
501enum ata_completion_errors {
502 AC_ERR_DEV = (1 << 0),
503 AC_ERR_HSM = (1 << 1),
504 AC_ERR_TIMEOUT = (1 << 2),
505 AC_ERR_MEDIA = (1 << 3),
506 AC_ERR_ATA_BUS = (1 << 4),
507 AC_ERR_HOST_BUS = (1 << 5),
508 AC_ERR_SYSTEM = (1 << 6),
509 AC_ERR_INVALID = (1 << 7),
510 AC_ERR_OTHER = (1 << 8),
511 AC_ERR_NODEV_HINT = (1 << 9),
512 AC_ERR_NCQ = (1 << 10),
513};
514
515
516
517
518
519enum ata_lpm_policy {
520 ATA_LPM_UNKNOWN,
521 ATA_LPM_MAX_POWER,
522 ATA_LPM_MED_POWER,
523 ATA_LPM_MIN_POWER,
524};
525
526enum ata_lpm_hints {
527 ATA_LPM_EMPTY = (1 << 0),
528 ATA_LPM_HIPM = (1 << 1),
529 ATA_LPM_WAKE_ONLY = (1 << 2),
530};
531
532
533struct scsi_device;
534struct ata_port_operations;
535struct ata_port;
536struct ata_link;
537struct ata_queued_cmd;
538
539
540typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
541typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
542typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
543 unsigned long deadline);
544typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
545
546extern struct device_attribute dev_attr_link_power_management_policy;
547extern struct device_attribute dev_attr_unload_heads;
548extern struct device_attribute dev_attr_em_message_type;
549extern struct device_attribute dev_attr_em_message;
550extern struct device_attribute dev_attr_sw_activity;
551
552enum sw_activity {
553 OFF,
554 BLINK_ON,
555 BLINK_OFF,
556};
557
558struct ata_taskfile {
559 unsigned long flags;
560 u8 protocol;
561
562 u8 ctl;
563
564 u8 hob_feature;
565 u8 hob_nsect;
566 u8 hob_lbal;
567 u8 hob_lbam;
568 u8 hob_lbah;
569
570 u8 feature;
571 u8 nsect;
572 u8 lbal;
573 u8 lbam;
574 u8 lbah;
575
576 u8 device;
577
578 u8 command;
579
580 u32 auxiliary;
581
582
583};
584
585#ifdef CONFIG_ATA_SFF
586struct ata_ioports {
587 void __iomem *cmd_addr;
588 void __iomem *data_addr;
589 void __iomem *error_addr;
590 void __iomem *feature_addr;
591 void __iomem *nsect_addr;
592 void __iomem *lbal_addr;
593 void __iomem *lbam_addr;
594 void __iomem *lbah_addr;
595 void __iomem *device_addr;
596 void __iomem *status_addr;
597 void __iomem *command_addr;
598 void __iomem *altstatus_addr;
599 void __iomem *ctl_addr;
600#ifdef CONFIG_ATA_BMDMA
601 void __iomem *bmdma_addr;
602#endif
603 void __iomem *scr_addr;
604};
605#endif
606
607struct ata_host {
608 spinlock_t lock;
609 struct device *dev;
610 void __iomem * const *iomap;
611 unsigned int n_ports;
612 unsigned int n_tags;
613 void *private_data;
614 struct ata_port_operations *ops;
615 unsigned long flags;
616
617 struct mutex eh_mutex;
618 struct task_struct *eh_owner;
619
620 struct ata_port *simplex_claimed;
621 struct ata_port *ports[0];
622};
623
624struct ata_queued_cmd {
625 struct ata_port *ap;
626 struct ata_device *dev;
627
628 struct scsi_cmnd *scsicmd;
629 void (*scsidone)(struct scsi_cmnd *);
630
631 struct ata_taskfile tf;
632 u8 cdb[ATAPI_CDB_LEN];
633
634 unsigned long flags;
635 unsigned int tag;
636 unsigned int n_elem;
637 unsigned int orig_n_elem;
638
639 int dma_dir;
640
641 unsigned int sect_size;
642
643 unsigned int nbytes;
644 unsigned int extrabytes;
645 unsigned int curbytes;
646
647 struct scatterlist sgent;
648
649 struct scatterlist *sg;
650
651 struct scatterlist *cursg;
652 unsigned int cursg_ofs;
653
654 unsigned int err_mask;
655 struct ata_taskfile result_tf;
656 ata_qc_cb_t complete_fn;
657
658 void *private_data;
659 void *lldd_task;
660};
661
662struct ata_port_stats {
663 unsigned long unhandled_irq;
664 unsigned long idle_irq;
665 unsigned long rw_reqbuf;
666};
667
668struct ata_ering_entry {
669 unsigned int eflags;
670 unsigned int err_mask;
671 u64 timestamp;
672};
673
674struct ata_ering {
675 int cursor;
676 struct ata_ering_entry ring[ATA_ERING_SIZE];
677};
678
679struct ata_device {
680 struct ata_link *link;
681 unsigned int devno;
682 unsigned int horkage;
683 unsigned long flags;
684 struct scsi_device *sdev;
685 void *private_data;
686#ifdef CONFIG_ATA_ACPI
687 union acpi_object *gtf_cache;
688 unsigned int gtf_filter;
689#endif
690#ifdef CONFIG_SATA_ZPODD
691 void *zpodd;
692#endif
693 struct device tdev;
694
695 u64 n_sectors;
696 u64 n_native_sectors;
697 unsigned int class;
698 unsigned long unpark_deadline;
699
700 u8 pio_mode;
701 u8 dma_mode;
702 u8 xfer_mode;
703 unsigned int xfer_shift;
704
705 unsigned int multi_count;
706
707 unsigned int max_sectors;
708 unsigned int cdb_len;
709
710
711 unsigned long pio_mask;
712 unsigned long mwdma_mask;
713 unsigned long udma_mask;
714
715
716 u16 cylinders;
717 u16 heads;
718 u16 sectors;
719
720 union {
721 u16 id[ATA_ID_WORDS];
722 u32 gscr[SATA_PMP_GSCR_DWORDS];
723 } ____cacheline_aligned;
724
725
726 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
727
728
729 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
730
731
732 int spdn_cnt;
733
734 struct ata_ering ering;
735};
736
737
738
739
740#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
741#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
742
743struct ata_eh_info {
744 struct ata_device *dev;
745 u32 serror;
746 unsigned int err_mask;
747 unsigned int action;
748 unsigned int dev_action[ATA_MAX_DEVICES];
749 unsigned int flags;
750
751 unsigned int probe_mask;
752
753 char desc[ATA_EH_DESC_LEN];
754 int desc_len;
755};
756
757struct ata_eh_context {
758 struct ata_eh_info i;
759 int tries[ATA_MAX_DEVICES];
760 int cmd_timeout_idx[ATA_MAX_DEVICES]
761 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
762 unsigned int classes[ATA_MAX_DEVICES];
763 unsigned int did_probe_mask;
764 unsigned int unloaded_mask;
765 unsigned int saved_ncq_enabled;
766 u8 saved_xfer_mode[ATA_MAX_DEVICES];
767
768 unsigned long last_reset;
769};
770
771struct ata_acpi_drive
772{
773 u32 pio;
774 u32 dma;
775} __packed;
776
777struct ata_acpi_gtm {
778 struct ata_acpi_drive drive[2];
779 u32 flags;
780} __packed;
781
782struct ata_link {
783 struct ata_port *ap;
784 int pmp;
785
786 struct device tdev;
787 unsigned int active_tag;
788 u32 sactive;
789
790 unsigned int flags;
791
792 u32 saved_scontrol;
793 unsigned int hw_sata_spd_limit;
794 unsigned int sata_spd_limit;
795 unsigned int sata_spd;
796 enum ata_lpm_policy lpm_policy;
797
798
799 struct ata_eh_info eh_info;
800
801 struct ata_eh_context eh_context;
802
803 struct ata_device device[ATA_MAX_DEVICES];
804
805 unsigned long last_lpm_change;
806};
807#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
808#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
809
810struct ata_port {
811 struct Scsi_Host *scsi_host;
812 struct ata_port_operations *ops;
813 spinlock_t *lock;
814
815
816 unsigned long flags;
817
818 unsigned int pflags;
819 unsigned int print_id;
820 unsigned int local_port_no;
821 unsigned int port_no;
822
823#ifdef CONFIG_ATA_SFF
824 struct ata_ioports ioaddr;
825 u8 ctl;
826 u8 last_ctl;
827 struct ata_link* sff_pio_task_link;
828 struct delayed_work sff_pio_task;
829#ifdef CONFIG_ATA_BMDMA
830 struct ata_bmdma_prd *bmdma_prd;
831 dma_addr_t bmdma_prd_dma;
832#endif
833#endif
834
835 unsigned int pio_mask;
836 unsigned int mwdma_mask;
837 unsigned int udma_mask;
838 unsigned int cbl;
839
840 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
841 unsigned long sas_tag_allocated;
842 unsigned int qc_active;
843 int nr_active_links;
844 unsigned int sas_last_tag;
845
846 struct ata_link link;
847 struct ata_link *slave_link;
848
849 int nr_pmp_links;
850 struct ata_link *pmp_link;
851 struct ata_link *excl_link;
852
853 struct ata_port_stats stats;
854 struct ata_host *host;
855 struct device *dev;
856 struct device tdev;
857
858 struct mutex scsi_scan_mutex;
859 struct delayed_work hotplug_task;
860 struct work_struct scsi_rescan_task;
861
862 unsigned int hsm_task_state;
863
864 u32 msg_enable;
865 struct list_head eh_done_q;
866 wait_queue_head_t eh_wait_q;
867 int eh_tries;
868 struct completion park_req_pending;
869
870 pm_message_t pm_mesg;
871 enum ata_lpm_policy target_lpm_policy;
872
873 struct timer_list fastdrain_timer;
874 unsigned long fastdrain_cnt;
875
876 int em_message_type;
877 void *private_data;
878
879#ifdef CONFIG_ATA_ACPI
880 struct ata_acpi_gtm __acpi_init_gtm;
881#endif
882
883 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
884};
885
886
887
888
889
890
891#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
892
893struct ata_port_operations {
894
895
896
897 int (*qc_defer)(struct ata_queued_cmd *qc);
898 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
899 void (*qc_prep)(struct ata_queued_cmd *qc);
900 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
901 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
902
903
904
905
906 int (*cable_detect)(struct ata_port *ap);
907 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
908 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
909 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
910 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
911 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
912
913 void (*dev_config)(struct ata_device *dev);
914
915 void (*freeze)(struct ata_port *ap);
916 void (*thaw)(struct ata_port *ap);
917 ata_prereset_fn_t prereset;
918 ata_reset_fn_t softreset;
919 ata_reset_fn_t hardreset;
920 ata_postreset_fn_t postreset;
921 ata_prereset_fn_t pmp_prereset;
922 ata_reset_fn_t pmp_softreset;
923 ata_reset_fn_t pmp_hardreset;
924 ata_postreset_fn_t pmp_postreset;
925 void (*error_handler)(struct ata_port *ap);
926 void (*lost_interrupt)(struct ata_port *ap);
927 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
928 void (*sched_eh)(struct ata_port *ap);
929 void (*end_eh)(struct ata_port *ap);
930
931
932
933
934 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
935 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
936 void (*pmp_attach)(struct ata_port *ap);
937 void (*pmp_detach)(struct ata_port *ap);
938 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
939 unsigned hints);
940
941
942
943
944 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
945 int (*port_resume)(struct ata_port *ap);
946 int (*port_start)(struct ata_port *ap);
947 void (*port_stop)(struct ata_port *ap);
948 void (*host_stop)(struct ata_host *host);
949
950#ifdef CONFIG_ATA_SFF
951
952
953
954 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
955 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
956 u8 (*sff_check_status)(struct ata_port *ap);
957 u8 (*sff_check_altstatus)(struct ata_port *ap);
958 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
959 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
960 void (*sff_exec_command)(struct ata_port *ap,
961 const struct ata_taskfile *tf);
962 unsigned int (*sff_data_xfer)(struct ata_device *dev,
963 unsigned char *buf, unsigned int buflen, int rw);
964 void (*sff_irq_on)(struct ata_port *);
965 bool (*sff_irq_check)(struct ata_port *);
966 void (*sff_irq_clear)(struct ata_port *);
967 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
968
969#ifdef CONFIG_ATA_BMDMA
970 void (*bmdma_setup)(struct ata_queued_cmd *qc);
971 void (*bmdma_start)(struct ata_queued_cmd *qc);
972 void (*bmdma_stop)(struct ata_queued_cmd *qc);
973 u8 (*bmdma_status)(struct ata_port *ap);
974#endif
975#endif
976
977 ssize_t (*em_show)(struct ata_port *ap, char *buf);
978 ssize_t (*em_store)(struct ata_port *ap, const char *message,
979 size_t size);
980 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
981 ssize_t (*sw_activity_store)(struct ata_device *dev,
982 enum sw_activity val);
983 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
984 ssize_t size);
985
986
987
988
989 void (*phy_reset)(struct ata_port *ap);
990 void (*eng_timeout)(struct ata_port *ap);
991
992
993
994
995
996 const struct ata_port_operations *inherits;
997};
998
999struct ata_port_info {
1000 unsigned long flags;
1001 unsigned long link_flags;
1002 unsigned long pio_mask;
1003 unsigned long mwdma_mask;
1004 unsigned long udma_mask;
1005 struct ata_port_operations *port_ops;
1006 void *private_data;
1007};
1008
1009struct ata_timing {
1010 unsigned short mode;
1011 unsigned short setup;
1012 unsigned short act8b;
1013 unsigned short rec8b;
1014 unsigned short cyc8b;
1015 unsigned short active;
1016 unsigned short recover;
1017 unsigned short dmack_hold;
1018 unsigned short cycle;
1019 unsigned short udma;
1020};
1021
1022
1023
1024
1025extern const unsigned long sata_deb_timing_normal[];
1026extern const unsigned long sata_deb_timing_hotplug[];
1027extern const unsigned long sata_deb_timing_long[];
1028
1029extern struct ata_port_operations ata_dummy_port_ops;
1030extern const struct ata_port_info ata_dummy_port_info;
1031
1032
1033
1034
1035static inline unsigned int ata_prot_flags(u8 prot)
1036{
1037 switch (prot) {
1038 case ATA_PROT_NODATA:
1039 return 0;
1040 case ATA_PROT_PIO:
1041 return ATA_PROT_FLAG_PIO;
1042 case ATA_PROT_DMA:
1043 return ATA_PROT_FLAG_DMA;
1044 case ATA_PROT_NCQ:
1045 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
1046 case ATAPI_PROT_NODATA:
1047 return ATA_PROT_FLAG_ATAPI;
1048 case ATAPI_PROT_PIO:
1049 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
1050 case ATAPI_PROT_DMA:
1051 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
1052 }
1053 return 0;
1054}
1055
1056static inline int ata_is_atapi(u8 prot)
1057{
1058 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
1059}
1060
1061static inline int ata_is_nodata(u8 prot)
1062{
1063 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
1064}
1065
1066static inline int ata_is_pio(u8 prot)
1067{
1068 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
1069}
1070
1071static inline int ata_is_dma(u8 prot)
1072{
1073 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
1074}
1075
1076static inline int ata_is_ncq(u8 prot)
1077{
1078 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
1079}
1080
1081static inline int ata_is_data(u8 prot)
1082{
1083 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
1084}
1085
1086static inline int is_multi_taskfile(struct ata_taskfile *tf)
1087{
1088 return (tf->command == ATA_CMD_READ_MULTI) ||
1089 (tf->command == ATA_CMD_WRITE_MULTI) ||
1090 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1091 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1092 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1093}
1094
1095static inline const unsigned long *
1096sata_ehc_deb_timing(struct ata_eh_context *ehc)
1097{
1098 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1099 return sata_deb_timing_hotplug;
1100 else
1101 return sata_deb_timing_normal;
1102}
1103
1104static inline int ata_port_is_dummy(struct ata_port *ap)
1105{
1106 return ap->ops == &ata_dummy_port_ops;
1107}
1108
1109extern int sata_set_spd(struct ata_link *link);
1110extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1111extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1112 int (*check_ready)(struct ata_link *link));
1113extern int sata_link_debounce(struct ata_link *link,
1114 const unsigned long *params, unsigned long deadline);
1115extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1116 unsigned long deadline);
1117extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1118 bool spm_wakeup);
1119extern int sata_link_hardreset(struct ata_link *link,
1120 const unsigned long *timing, unsigned long deadline,
1121 bool *online, int (*check_ready)(struct ata_link *));
1122extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1123 unsigned long deadline);
1124extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1125
1126extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1127extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1128 const struct ata_port_info * const * ppi, int n_ports);
1129extern int ata_slave_link_init(struct ata_port *ap);
1130extern int ata_host_start(struct ata_host *host);
1131extern int ata_host_register(struct ata_host *host,
1132 struct scsi_host_template *sht);
1133extern int ata_host_activate(struct ata_host *host, int irq,
1134 irq_handler_t irq_handler, unsigned long irq_flags,
1135 struct scsi_host_template *sht);
1136extern void ata_host_detach(struct ata_host *host);
1137extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1138extern int ata_scsi_detect(struct scsi_host_template *sht);
1139extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
1140extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1141extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1142 int cmd, void __user *arg);
1143extern void ata_sas_port_destroy(struct ata_port *);
1144extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1145 struct ata_port_info *, struct Scsi_Host *);
1146extern void ata_sas_async_probe(struct ata_port *ap);
1147extern int ata_sas_sync_probe(struct ata_port *ap);
1148extern int ata_sas_port_init(struct ata_port *);
1149extern int ata_sas_port_start(struct ata_port *ap);
1150extern void ata_sas_port_stop(struct ata_port *ap);
1151extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1152extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1153extern int sata_scr_valid(struct ata_link *link);
1154extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1155extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1156extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1157extern bool ata_link_online(struct ata_link *link);
1158extern bool ata_link_offline(struct ata_link *link);
1159#ifdef CONFIG_PM
1160extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1161extern void ata_host_resume(struct ata_host *host);
1162extern void ata_sas_port_suspend(struct ata_port *ap);
1163extern void ata_sas_port_resume(struct ata_port *ap);
1164#else
1165static inline void ata_sas_port_suspend(struct ata_port *ap)
1166{
1167}
1168static inline void ata_sas_port_resume(struct ata_port *ap)
1169{
1170}
1171#endif
1172extern int ata_ratelimit(void);
1173extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1174extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1175 u32 val, unsigned long interval, unsigned long timeout);
1176extern int atapi_cmd_type(u8 opcode);
1177extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1178 u8 pmp, int is_cmd, u8 *fis);
1179extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1180extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1181 unsigned long mwdma_mask, unsigned long udma_mask);
1182extern void ata_unpack_xfermask(unsigned long xfer_mask,
1183 unsigned long *pio_mask, unsigned long *mwdma_mask,
1184 unsigned long *udma_mask);
1185extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1186extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1187extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1188extern const char *ata_mode_string(unsigned long xfer_mask);
1189extern unsigned long ata_id_xfermask(const u16 *id);
1190extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1191extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1192extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1193 unsigned int n_elem);
1194extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1195extern void ata_dev_disable(struct ata_device *adev);
1196extern void ata_id_string(const u16 *id, unsigned char *s,
1197 unsigned int ofs, unsigned int len);
1198extern void ata_id_c_string(const u16 *id, unsigned char *s,
1199 unsigned int ofs, unsigned int len);
1200extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1201 struct ata_taskfile *tf, u16 *id);
1202extern void ata_qc_complete(struct ata_queued_cmd *qc);
1203extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1204extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1205extern int ata_std_bios_param(struct scsi_device *sdev,
1206 struct block_device *bdev,
1207 sector_t capacity, int geom[]);
1208extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1209extern int ata_scsi_slave_config(struct scsi_device *sdev);
1210extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1211extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1212 int queue_depth);
1213extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1214 int queue_depth);
1215extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1216extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1217extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1218extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1219extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1220
1221extern int ata_cable_40wire(struct ata_port *ap);
1222extern int ata_cable_80wire(struct ata_port *ap);
1223extern int ata_cable_sata(struct ata_port *ap);
1224extern int ata_cable_ignore(struct ata_port *ap);
1225extern int ata_cable_unknown(struct ata_port *ap);
1226
1227
1228extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1229extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1230extern int ata_timing_compute(struct ata_device *, unsigned short,
1231 struct ata_timing *, int, int);
1232extern void ata_timing_merge(const struct ata_timing *,
1233 const struct ata_timing *, struct ata_timing *,
1234 unsigned int);
1235extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1236
1237
1238#ifdef CONFIG_PCI
1239struct pci_dev;
1240
1241struct pci_bits {
1242 unsigned int reg;
1243 unsigned int width;
1244 unsigned long mask;
1245 unsigned long val;
1246};
1247
1248extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1249extern void ata_pci_remove_one(struct pci_dev *pdev);
1250
1251#ifdef CONFIG_PM
1252extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1253extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1254extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1255extern int ata_pci_device_resume(struct pci_dev *pdev);
1256#endif
1257#endif
1258
1259struct platform_device;
1260
1261extern int ata_platform_remove_one(struct platform_device *pdev);
1262
1263
1264
1265
1266#ifdef CONFIG_ATA_ACPI
1267static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1268{
1269 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1270 return &ap->__acpi_init_gtm;
1271 return NULL;
1272}
1273int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1274int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1275unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1276 const struct ata_acpi_gtm *gtm);
1277int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1278#else
1279static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1280{
1281 return NULL;
1282}
1283
1284static inline int ata_acpi_stm(const struct ata_port *ap,
1285 struct ata_acpi_gtm *stm)
1286{
1287 return -ENOSYS;
1288}
1289
1290static inline int ata_acpi_gtm(const struct ata_port *ap,
1291 struct ata_acpi_gtm *stm)
1292{
1293 return -ENOSYS;
1294}
1295
1296static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1297 const struct ata_acpi_gtm *gtm)
1298{
1299 return 0;
1300}
1301
1302static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1303 const struct ata_acpi_gtm *gtm)
1304{
1305 return 0;
1306}
1307#endif
1308
1309
1310
1311
1312extern void ata_port_schedule_eh(struct ata_port *ap);
1313extern void ata_port_wait_eh(struct ata_port *ap);
1314extern int ata_link_abort(struct ata_link *link);
1315extern int ata_port_abort(struct ata_port *ap);
1316extern int ata_port_freeze(struct ata_port *ap);
1317extern int sata_async_notification(struct ata_port *ap);
1318
1319extern void ata_eh_freeze_port(struct ata_port *ap);
1320extern void ata_eh_thaw_port(struct ata_port *ap);
1321
1322extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1323extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1324extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1325
1326extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1327 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1328 ata_postreset_fn_t postreset);
1329extern void ata_std_error_handler(struct ata_port *ap);
1330extern void ata_std_sched_eh(struct ata_port *ap);
1331extern void ata_std_end_eh(struct ata_port *ap);
1332extern int ata_link_nr_enabled(struct ata_link *link);
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355extern const struct ata_port_operations ata_base_port_ops;
1356extern const struct ata_port_operations sata_port_ops;
1357extern struct device_attribute *ata_common_sdev_attrs[];
1358
1359
1360
1361
1362
1363
1364
1365#define ATA_BASE_SHT(drv_name) \
1366 .module = THIS_MODULE, \
1367 .name = drv_name, \
1368 .ioctl = ata_scsi_ioctl, \
1369 .queuecommand = ata_scsi_queuecmd, \
1370 .can_queue = ATA_DEF_QUEUE, \
1371 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1372 .this_id = ATA_SHT_THIS_ID, \
1373 .emulated = ATA_SHT_EMULATED, \
1374 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1375 .proc_name = drv_name, \
1376 .slave_configure = ata_scsi_slave_config, \
1377 .slave_destroy = ata_scsi_slave_destroy, \
1378 .bios_param = ata_std_bios_param, \
1379 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1380 .sdev_attrs = ata_common_sdev_attrs
1381
1382#define ATA_NCQ_SHT(drv_name) \
1383 ATA_BASE_SHT(drv_name), \
1384 .change_queue_depth = ata_scsi_change_queue_depth
1385
1386
1387
1388
1389#ifdef CONFIG_SATA_PMP
1390static inline bool sata_pmp_supported(struct ata_port *ap)
1391{
1392 return ap->flags & ATA_FLAG_PMP;
1393}
1394
1395static inline bool sata_pmp_attached(struct ata_port *ap)
1396{
1397 return ap->nr_pmp_links != 0;
1398}
1399
1400static inline int ata_is_host_link(const struct ata_link *link)
1401{
1402 return link == &link->ap->link || link == link->ap->slave_link;
1403}
1404#else
1405static inline bool sata_pmp_supported(struct ata_port *ap)
1406{
1407 return false;
1408}
1409
1410static inline bool sata_pmp_attached(struct ata_port *ap)
1411{
1412 return false;
1413}
1414
1415static inline int ata_is_host_link(const struct ata_link *link)
1416{
1417 return 1;
1418}
1419#endif
1420
1421static inline int sata_srst_pmp(struct ata_link *link)
1422{
1423 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1424 return SATA_PMP_CTRL_PORT;
1425 return link->pmp;
1426}
1427
1428
1429
1430
1431__printf(3, 4)
1432void ata_port_printk(const struct ata_port *ap, const char *level,
1433 const char *fmt, ...);
1434__printf(3, 4)
1435void ata_link_printk(const struct ata_link *link, const char *level,
1436 const char *fmt, ...);
1437__printf(3, 4)
1438void ata_dev_printk(const struct ata_device *dev, const char *level,
1439 const char *fmt, ...);
1440
1441#define ata_port_err(ap, fmt, ...) \
1442 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1443#define ata_port_warn(ap, fmt, ...) \
1444 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1445#define ata_port_notice(ap, fmt, ...) \
1446 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1447#define ata_port_info(ap, fmt, ...) \
1448 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1449#define ata_port_dbg(ap, fmt, ...) \
1450 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1451
1452#define ata_link_err(link, fmt, ...) \
1453 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1454#define ata_link_warn(link, fmt, ...) \
1455 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1456#define ata_link_notice(link, fmt, ...) \
1457 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1458#define ata_link_info(link, fmt, ...) \
1459 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1460#define ata_link_dbg(link, fmt, ...) \
1461 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1462
1463#define ata_dev_err(dev, fmt, ...) \
1464 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1465#define ata_dev_warn(dev, fmt, ...) \
1466 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1467#define ata_dev_notice(dev, fmt, ...) \
1468 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1469#define ata_dev_info(dev, fmt, ...) \
1470 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1471#define ata_dev_dbg(dev, fmt, ...) \
1472 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1473
1474void ata_print_version(const struct device *dev, const char *version);
1475
1476
1477
1478
1479extern __printf(2, 3)
1480void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1481extern __printf(2, 3)
1482void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1483extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1484
1485static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1486{
1487 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1488 ehi->flags |= ATA_EHI_HOTPLUGGED;
1489 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1490 ehi->err_mask |= AC_ERR_ATA_BUS;
1491}
1492
1493
1494
1495
1496extern __printf(2, 3)
1497void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1498#ifdef CONFIG_PCI
1499extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1500 const char *name);
1501#endif
1502
1503static inline unsigned int ata_tag_valid(unsigned int tag)
1504{
1505 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1506}
1507
1508static inline unsigned int ata_tag_internal(unsigned int tag)
1509{
1510 return tag == ATA_TAG_INTERNAL;
1511}
1512
1513
1514
1515
1516static inline unsigned int ata_class_enabled(unsigned int class)
1517{
1518 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1519 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1520 class == ATA_DEV_ZAC;
1521}
1522
1523static inline unsigned int ata_class_disabled(unsigned int class)
1524{
1525 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1526 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
1527}
1528
1529static inline unsigned int ata_class_absent(unsigned int class)
1530{
1531 return !ata_class_enabled(class) && !ata_class_disabled(class);
1532}
1533
1534static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1535{
1536 return ata_class_enabled(dev->class);
1537}
1538
1539static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1540{
1541 return ata_class_disabled(dev->class);
1542}
1543
1544static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1545{
1546 return ata_class_absent(dev->class);
1547}
1548
1549
1550
1551
1552static inline int ata_link_max_devices(const struct ata_link *link)
1553{
1554 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1555 return 2;
1556 return 1;
1557}
1558
1559static inline int ata_link_active(struct ata_link *link)
1560{
1561 return ata_tag_valid(link->active_tag) || link->sactive;
1562}
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576enum ata_link_iter_mode {
1577 ATA_LITER_EDGE,
1578
1579 ATA_LITER_HOST_FIRST,
1580 ATA_LITER_PMP_FIRST,
1581
1582};
1583
1584enum ata_dev_iter_mode {
1585 ATA_DITER_ENABLED,
1586 ATA_DITER_ENABLED_REVERSE,
1587 ATA_DITER_ALL,
1588 ATA_DITER_ALL_REVERSE,
1589};
1590
1591extern struct ata_link *ata_link_next(struct ata_link *link,
1592 struct ata_port *ap,
1593 enum ata_link_iter_mode mode);
1594
1595extern struct ata_device *ata_dev_next(struct ata_device *dev,
1596 struct ata_link *link,
1597 enum ata_dev_iter_mode mode);
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613#define ata_for_each_link(link, ap, mode) \
1614 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1615 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1616
1617#define ata_for_each_dev(dev, link, mode) \
1618 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1619 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631static inline int ata_ncq_enabled(struct ata_device *dev)
1632{
1633 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1634 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1635}
1636
1637static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1638{
1639 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1640 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1641 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1642}
1643
1644static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1645{
1646 qc->tf.ctl |= ATA_NIEN;
1647}
1648
1649static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1650 unsigned int tag)
1651{
1652 if (likely(ata_tag_valid(tag)))
1653 return &ap->qcmd[tag];
1654 return NULL;
1655}
1656
1657static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1658 unsigned int tag)
1659{
1660 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1661
1662 if (unlikely(!qc) || !ap->ops->error_handler)
1663 return qc;
1664
1665 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1666 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1667 return qc;
1668
1669 return NULL;
1670}
1671
1672static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1673{
1674 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1675}
1676
1677static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1678{
1679 memset(tf, 0, sizeof(*tf));
1680
1681#ifdef CONFIG_ATA_SFF
1682 tf->ctl = dev->link->ap->ctl;
1683#else
1684 tf->ctl = ATA_DEVCTL_OBS;
1685#endif
1686 if (dev->devno == 0)
1687 tf->device = ATA_DEVICE_OBS;
1688 else
1689 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1690}
1691
1692static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1693{
1694 qc->dma_dir = DMA_NONE;
1695 qc->sg = NULL;
1696 qc->flags = 0;
1697 qc->cursg = NULL;
1698 qc->cursg_ofs = 0;
1699 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1700 qc->n_elem = 0;
1701 qc->err_mask = 0;
1702 qc->sect_size = ATA_SECT_SIZE;
1703
1704 ata_tf_init(qc->dev, &qc->tf);
1705
1706
1707 qc->result_tf.command = ATA_DRDY;
1708 qc->result_tf.feature = 0;
1709}
1710
1711static inline int ata_try_flush_cache(const struct ata_device *dev)
1712{
1713 return ata_id_wcache_enabled(dev->id) ||
1714 ata_id_has_flush(dev->id) ||
1715 ata_id_has_flush_ext(dev->id);
1716}
1717
1718static inline unsigned int ac_err_mask(u8 status)
1719{
1720 if (status & (ATA_BUSY | ATA_DRQ))
1721 return AC_ERR_HSM;
1722 if (status & (ATA_ERR | ATA_DF))
1723 return AC_ERR_DEV;
1724 return 0;
1725}
1726
1727static inline unsigned int __ac_err_mask(u8 status)
1728{
1729 unsigned int mask = ac_err_mask(status);
1730 if (mask == 0)
1731 return AC_ERR_OTHER;
1732 return mask;
1733}
1734
1735static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1736{
1737 return *(struct ata_port **)&host->hostdata[0];
1738}
1739
1740static inline int ata_check_ready(u8 status)
1741{
1742 if (!(status & ATA_BUSY))
1743 return 1;
1744
1745
1746 if (status == 0xff)
1747 return -ENODEV;
1748
1749 return 0;
1750}
1751
1752static inline unsigned long ata_deadline(unsigned long from_jiffies,
1753 unsigned long timeout_msecs)
1754{
1755 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1756}
1757
1758
1759
1760
1761
1762static inline int ata_using_mwdma(struct ata_device *adev)
1763{
1764 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1765 return 1;
1766 return 0;
1767}
1768
1769static inline int ata_using_udma(struct ata_device *adev)
1770{
1771 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1772 return 1;
1773 return 0;
1774}
1775
1776static inline int ata_dma_enabled(struct ata_device *adev)
1777{
1778 return (adev->dma_mode == 0xFF ? 0 : 1);
1779}
1780
1781
1782
1783
1784#ifdef CONFIG_SATA_PMP
1785
1786extern const struct ata_port_operations sata_pmp_port_ops;
1787
1788extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1789extern void sata_pmp_error_handler(struct ata_port *ap);
1790
1791#else
1792
1793#define sata_pmp_port_ops sata_port_ops
1794#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1795#define sata_pmp_error_handler ata_std_error_handler
1796
1797#endif
1798
1799
1800
1801
1802
1803#ifdef CONFIG_ATA_SFF
1804
1805extern const struct ata_port_operations ata_sff_port_ops;
1806extern const struct ata_port_operations ata_bmdma32_port_ops;
1807
1808
1809#define ATA_PIO_SHT(drv_name) \
1810 ATA_BASE_SHT(drv_name), \
1811 .sg_tablesize = LIBATA_MAX_PRD, \
1812 .dma_boundary = ATA_DMA_BOUNDARY
1813
1814extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1815extern u8 ata_sff_check_status(struct ata_port *ap);
1816extern void ata_sff_pause(struct ata_port *ap);
1817extern void ata_sff_dma_pause(struct ata_port *ap);
1818extern int ata_sff_busy_sleep(struct ata_port *ap,
1819 unsigned long timeout_pat, unsigned long timeout);
1820extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1821extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1822extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1823extern void ata_sff_exec_command(struct ata_port *ap,
1824 const struct ata_taskfile *tf);
1825extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
1826 unsigned char *buf, unsigned int buflen, int rw);
1827extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1828 unsigned char *buf, unsigned int buflen, int rw);
1829extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
1830 unsigned char *buf, unsigned int buflen, int rw);
1831extern void ata_sff_irq_on(struct ata_port *ap);
1832extern void ata_sff_irq_clear(struct ata_port *ap);
1833extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1834 u8 status, int in_wq);
1835extern void ata_sff_queue_work(struct work_struct *work);
1836extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1837 unsigned long delay);
1838extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1839extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1840extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1841extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1842 struct ata_queued_cmd *qc);
1843extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1844extern void ata_sff_lost_interrupt(struct ata_port *ap);
1845extern void ata_sff_freeze(struct ata_port *ap);
1846extern void ata_sff_thaw(struct ata_port *ap);
1847extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1848extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1849 u8 *r_err);
1850extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1851 unsigned long deadline);
1852extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1853 unsigned long deadline);
1854extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1855 unsigned long deadline);
1856extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1857extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1858extern void ata_sff_error_handler(struct ata_port *ap);
1859extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1860#ifdef CONFIG_PCI
1861extern int ata_pci_sff_init_host(struct ata_host *host);
1862extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1863 const struct ata_port_info * const * ppi,
1864 struct ata_host **r_host);
1865extern int ata_pci_sff_activate_host(struct ata_host *host,
1866 irq_handler_t irq_handler,
1867 struct scsi_host_template *sht);
1868extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1869 const struct ata_port_info * const * ppi,
1870 struct scsi_host_template *sht, void *host_priv, int hflags);
1871#endif
1872
1873#ifdef CONFIG_ATA_BMDMA
1874
1875extern const struct ata_port_operations ata_bmdma_port_ops;
1876
1877#define ATA_BMDMA_SHT(drv_name) \
1878 ATA_BASE_SHT(drv_name), \
1879 .sg_tablesize = LIBATA_MAX_PRD, \
1880 .dma_boundary = ATA_DMA_BOUNDARY
1881
1882extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1883extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1884extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1885extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1886 struct ata_queued_cmd *qc);
1887extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1888extern void ata_bmdma_error_handler(struct ata_port *ap);
1889extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1890extern void ata_bmdma_irq_clear(struct ata_port *ap);
1891extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1892extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1893extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1894extern u8 ata_bmdma_status(struct ata_port *ap);
1895extern int ata_bmdma_port_start(struct ata_port *ap);
1896extern int ata_bmdma_port_start32(struct ata_port *ap);
1897
1898#ifdef CONFIG_PCI
1899extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1900extern void ata_pci_bmdma_init(struct ata_host *host);
1901extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1902 const struct ata_port_info * const * ppi,
1903 struct ata_host **r_host);
1904extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1905 const struct ata_port_info * const * ppi,
1906 struct scsi_host_template *sht,
1907 void *host_priv, int hflags);
1908#endif
1909#endif
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1925 unsigned int max)
1926{
1927 u8 status;
1928
1929 do {
1930 udelay(10);
1931 status = ap->ops->sff_check_status(ap);
1932 max--;
1933 } while (status != 0xff && (status & bits) && (max > 0));
1934
1935 return status;
1936}
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948static inline u8 ata_wait_idle(struct ata_port *ap)
1949{
1950 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1951
1952#ifdef ATA_DEBUG
1953 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1954 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1955 status);
1956#endif
1957
1958 return status;
1959}
1960#endif
1961
1962#endif
1963