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10#ifndef __LINUX_LIBATA_H__
11#define __LINUX_LIBATA_H__
12
13#include <linux/delay.h>
14#include <linux/jiffies.h>
15#include <linux/interrupt.h>
16#include <linux/dma-mapping.h>
17#include <linux/scatterlist.h>
18#include <linux/io.h>
19#include <linux/ata.h>
20#include <linux/workqueue.h>
21#include <scsi/scsi_host.h>
22#include <linux/acpi.h>
23#include <linux/cdrom.h>
24#include <linux/sched.h>
25
26
27
28
29
30#ifdef CONFIG_ATA_NONSTANDARD
31#include <asm/libata-portmap.h>
32#else
33#define ATA_PRIMARY_IRQ(dev) 14
34#define ATA_SECONDARY_IRQ(dev) 15
35#endif
36
37
38
39
40
41#undef ATA_DEBUG
42#undef ATA_VERBOSE_DEBUG
43#undef ATA_IRQ_TRAP
44#undef ATA_NDEBUG
45
46
47
48#ifdef ATA_DEBUG
49#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
50#ifdef ATA_VERBOSE_DEBUG
51#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
52#else
53#define VPRINTK(fmt, args...)
54#endif
55#else
56#define DPRINTK(fmt, args...)
57#define VPRINTK(fmt, args...)
58#endif
59
60#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
61
62#define ata_print_version_once(dev, version) \
63({ \
64 static bool __print_once; \
65 \
66 if (!__print_once) { \
67 __print_once = true; \
68 ata_print_version(dev, version); \
69 } \
70})
71
72
73#define HAVE_LIBATA_MSG 1
74
75enum {
76 ATA_MSG_DRV = 0x0001,
77 ATA_MSG_INFO = 0x0002,
78 ATA_MSG_PROBE = 0x0004,
79 ATA_MSG_WARN = 0x0008,
80 ATA_MSG_MALLOC = 0x0010,
81 ATA_MSG_CTL = 0x0020,
82 ATA_MSG_INTR = 0x0040,
83 ATA_MSG_ERR = 0x0080,
84};
85
86#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
87#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
88#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
89#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
90#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
91#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
92#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
93#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
94
95static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
96{
97 if (dval < 0 || dval >= (sizeof(u32) * 8))
98 return default_msg_enable_bits;
99 if (!dval)
100 return 0;
101 return (1 << dval) - 1;
102}
103
104
105#define ATA_TAG_POISON 0xfafbfcfdU
106
107enum {
108
109 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
110 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4,
111 ATA_DEF_QUEUE = 1,
112 ATA_MAX_QUEUE = 32,
113 ATA_TAG_INTERNAL = ATA_MAX_QUEUE,
114 ATA_SHORT_PAUSE = 16,
115
116 ATAPI_MAX_DRAIN = 16 << 10,
117
118 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
119
120 ATA_SHT_EMULATED = 1,
121 ATA_SHT_THIS_ID = -1,
122
123
124 ATA_TFLAG_LBA48 = (1 << 0),
125 ATA_TFLAG_ISADDR = (1 << 1),
126 ATA_TFLAG_DEVICE = (1 << 2),
127 ATA_TFLAG_WRITE = (1 << 3),
128 ATA_TFLAG_LBA = (1 << 4),
129 ATA_TFLAG_FUA = (1 << 5),
130 ATA_TFLAG_POLLING = (1 << 6),
131
132
133 ATA_DFLAG_LBA = (1 << 0),
134 ATA_DFLAG_LBA48 = (1 << 1),
135 ATA_DFLAG_CDB_INTR = (1 << 2),
136 ATA_DFLAG_NCQ = (1 << 3),
137 ATA_DFLAG_FLUSH_EXT = (1 << 4),
138 ATA_DFLAG_ACPI_PENDING = (1 << 5),
139 ATA_DFLAG_ACPI_FAILED = (1 << 6),
140 ATA_DFLAG_AN = (1 << 7),
141 ATA_DFLAG_TRUSTED = (1 << 8),
142 ATA_DFLAG_DMADIR = (1 << 10),
143 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
144
145 ATA_DFLAG_PIO = (1 << 12),
146 ATA_DFLAG_NCQ_OFF = (1 << 13),
147 ATA_DFLAG_SLEEPING = (1 << 15),
148 ATA_DFLAG_DUBIOUS_XFER = (1 << 16),
149 ATA_DFLAG_NO_UNLOAD = (1 << 17),
150 ATA_DFLAG_UNLOCK_HPA = (1 << 18),
151 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19),
152 ATA_DFLAG_NCQ_PRIO = (1 << 20),
153 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21),
154 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
155
156 ATA_DFLAG_DETACH = (1 << 24),
157 ATA_DFLAG_DETACHED = (1 << 25),
158
159 ATA_DFLAG_DA = (1 << 26),
160 ATA_DFLAG_DEVSLP = (1 << 27),
161 ATA_DFLAG_ACPI_DISABLED = (1 << 28),
162 ATA_DFLAG_D_SENSE = (1 << 29),
163 ATA_DFLAG_ZAC = (1 << 30),
164
165 ATA_DEV_UNKNOWN = 0,
166 ATA_DEV_ATA = 1,
167 ATA_DEV_ATA_UNSUP = 2,
168 ATA_DEV_ATAPI = 3,
169 ATA_DEV_ATAPI_UNSUP = 4,
170 ATA_DEV_PMP = 5,
171 ATA_DEV_PMP_UNSUP = 6,
172 ATA_DEV_SEMB = 7,
173 ATA_DEV_SEMB_UNSUP = 8,
174 ATA_DEV_ZAC = 9,
175 ATA_DEV_ZAC_UNSUP = 10,
176 ATA_DEV_NONE = 11,
177
178
179 ATA_LFLAG_NO_HRST = (1 << 1),
180 ATA_LFLAG_NO_SRST = (1 << 2),
181 ATA_LFLAG_ASSUME_ATA = (1 << 3),
182 ATA_LFLAG_ASSUME_SEMB = (1 << 4),
183 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
184 ATA_LFLAG_NO_RETRY = (1 << 5),
185 ATA_LFLAG_DISABLED = (1 << 6),
186 ATA_LFLAG_SW_ACTIVITY = (1 << 7),
187 ATA_LFLAG_NO_LPM = (1 << 8),
188 ATA_LFLAG_RST_ONCE = (1 << 9),
189 ATA_LFLAG_CHANGED = (1 << 10),
190 ATA_LFLAG_NO_DB_DELAY = (1 << 11),
191
192
193 ATA_FLAG_SLAVE_POSS = (1 << 0),
194
195 ATA_FLAG_SATA = (1 << 1),
196 ATA_FLAG_NO_LPM = (1 << 2),
197 ATA_FLAG_NO_LOG_PAGE = (1 << 5),
198 ATA_FLAG_NO_ATAPI = (1 << 6),
199 ATA_FLAG_PIO_DMA = (1 << 7),
200 ATA_FLAG_PIO_LBA48 = (1 << 8),
201 ATA_FLAG_PIO_POLLING = (1 << 9),
202
203 ATA_FLAG_NCQ = (1 << 10),
204 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11),
205 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12),
206 ATA_FLAG_DEBUGMSG = (1 << 13),
207 ATA_FLAG_FPDMA_AA = (1 << 14),
208 ATA_FLAG_IGN_SIMPLEX = (1 << 15),
209 ATA_FLAG_NO_IORDY = (1 << 16),
210 ATA_FLAG_ACPI_SATA = (1 << 17),
211 ATA_FLAG_AN = (1 << 18),
212 ATA_FLAG_PMP = (1 << 19),
213 ATA_FLAG_FPDMA_AUX = (1 << 20),
214 ATA_FLAG_EM = (1 << 21),
215
216 ATA_FLAG_SW_ACTIVITY = (1 << 22),
217
218 ATA_FLAG_NO_DIPM = (1 << 23),
219 ATA_FLAG_SAS_HOST = (1 << 24),
220
221
222
223
224
225 ATA_PFLAG_EH_PENDING = (1 << 0),
226 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1),
227 ATA_PFLAG_FROZEN = (1 << 2),
228 ATA_PFLAG_RECOVERED = (1 << 3),
229 ATA_PFLAG_LOADING = (1 << 4),
230 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6),
231 ATA_PFLAG_INITIALIZING = (1 << 7),
232 ATA_PFLAG_RESETTING = (1 << 8),
233 ATA_PFLAG_UNLOADING = (1 << 9),
234 ATA_PFLAG_UNLOADED = (1 << 10),
235
236 ATA_PFLAG_SUSPENDED = (1 << 17),
237 ATA_PFLAG_PM_PENDING = (1 << 18),
238 ATA_PFLAG_INIT_GTM_VALID = (1 << 19),
239
240 ATA_PFLAG_PIO32 = (1 << 20),
241 ATA_PFLAG_PIO32CHANGE = (1 << 21),
242 ATA_PFLAG_EXTERNAL = (1 << 22),
243
244
245 ATA_QCFLAG_ACTIVE = (1 << 0),
246 ATA_QCFLAG_DMAMAP = (1 << 1),
247 ATA_QCFLAG_IO = (1 << 3),
248 ATA_QCFLAG_RESULT_TF = (1 << 4),
249 ATA_QCFLAG_CLEAR_EXCL = (1 << 5),
250 ATA_QCFLAG_QUIET = (1 << 6),
251 ATA_QCFLAG_RETRY = (1 << 7),
252
253 ATA_QCFLAG_FAILED = (1 << 16),
254 ATA_QCFLAG_SENSE_VALID = (1 << 17),
255 ATA_QCFLAG_EH_SCHEDULED = (1 << 18),
256
257
258 ATA_HOST_SIMPLEX = (1 << 0),
259 ATA_HOST_STARTED = (1 << 1),
260 ATA_HOST_PARALLEL_SCAN = (1 << 2),
261 ATA_HOST_IGNORE_ATA = (1 << 3),
262
263
264
265
266 ATA_TMOUT_BOOT = 30000,
267 ATA_TMOUT_BOOT_QUICK = 7000,
268 ATA_TMOUT_INTERNAL_QUICK = 5000,
269 ATA_TMOUT_MAX_PARK = 30000,
270
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276 ATA_TMOUT_FF_WAIT_LONG = 2000,
277 ATA_TMOUT_FF_WAIT = 800,
278
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287
288
289 ATA_WAIT_AFTER_RESET = 150,
290
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295
296 ATA_TMOUT_PMP_SRST_WAIT = 5000,
297
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299
300
301
302 ATA_TMOUT_SPURIOUS_PHY = 10000,
303
304
305 BUS_UNKNOWN = 0,
306 BUS_DMA = 1,
307 BUS_IDLE = 2,
308 BUS_NOINTR = 3,
309 BUS_NODATA = 4,
310 BUS_TIMER = 5,
311 BUS_PIO = 6,
312 BUS_EDD = 7,
313 BUS_IDENTIFY = 8,
314 BUS_PACKET = 9,
315
316
317 PORT_UNKNOWN = 0,
318 PORT_ENABLED = 1,
319 PORT_DISABLED = 2,
320
321
322
323
324 ATA_NR_PIO_MODES = 7,
325 ATA_NR_MWDMA_MODES = 5,
326 ATA_NR_UDMA_MODES = 8,
327
328 ATA_SHIFT_PIO = 0,
329 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
330 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
331 ATA_SHIFT_PRIO = 6,
332
333 ATA_PRIO_HIGH = 2,
334
335 ATA_DMA_PAD_SZ = 4,
336
337
338 ATA_ERING_SIZE = 32,
339
340
341 ATA_DEFER_LINK = 1,
342 ATA_DEFER_PORT = 2,
343
344
345 ATA_EH_DESC_LEN = 80,
346
347
348 ATA_EH_REVALIDATE = (1 << 0),
349 ATA_EH_SOFTRESET = (1 << 1),
350 ATA_EH_HARDRESET = (1 << 2),
351 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
352 ATA_EH_ENABLE_LINK = (1 << 3),
353 ATA_EH_PARK = (1 << 5),
354
355 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
356 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
357 ATA_EH_ENABLE_LINK,
358
359
360 ATA_EHI_HOTPLUGGED = (1 << 0),
361 ATA_EHI_NO_AUTOPSY = (1 << 2),
362 ATA_EHI_QUIET = (1 << 3),
363 ATA_EHI_NO_RECOVERY = (1 << 4),
364
365 ATA_EHI_DID_SOFTRESET = (1 << 16),
366 ATA_EHI_DID_HARDRESET = (1 << 17),
367 ATA_EHI_PRINTINFO = (1 << 18),
368 ATA_EHI_SETMODE = (1 << 19),
369 ATA_EHI_POST_SETMODE = (1 << 20),
370
371 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
372
373
374 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
375
376
377 ATA_EH_MAX_TRIES = 5,
378
379
380 ATA_LINK_RESUME_TRIES = 5,
381
382
383 ATA_PROBE_MAX_TRIES = 3,
384 ATA_EH_DEV_TRIES = 3,
385 ATA_EH_PMP_TRIES = 5,
386 ATA_EH_PMP_LINK_TRIES = 3,
387
388 SATA_PMP_RW_TIMEOUT = 3000,
389
390
391
392
393 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
394
395
396
397
398 ATA_HORKAGE_DIAGNOSTIC = (1 << 0),
399 ATA_HORKAGE_NODMA = (1 << 1),
400 ATA_HORKAGE_NONCQ = (1 << 2),
401 ATA_HORKAGE_MAX_SEC_128 = (1 << 3),
402 ATA_HORKAGE_BROKEN_HPA = (1 << 4),
403 ATA_HORKAGE_DISABLE = (1 << 5),
404 ATA_HORKAGE_HPA_SIZE = (1 << 6),
405 ATA_HORKAGE_IVB = (1 << 8),
406 ATA_HORKAGE_STUCK_ERR = (1 << 9),
407 ATA_HORKAGE_BRIDGE_OK = (1 << 10),
408 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11),
409
410 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),
411 ATA_HORKAGE_1_5_GBPS = (1 << 13),
412 ATA_HORKAGE_NOSETXFER = (1 << 14),
413 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15),
414 ATA_HORKAGE_DUMP_ID = (1 << 16),
415 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17),
416 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18),
417 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19),
418 ATA_HORKAGE_NOLPM = (1 << 20),
419 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21),
420 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),
421 ATA_HORKAGE_NO_DMA_LOG = (1 << 23),
422 ATA_HORKAGE_NOTRIM = (1 << 24),
423 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25),
424
425
426
427 ATA_DMA_MASK_ATA = (1 << 0),
428 ATA_DMA_MASK_ATAPI = (1 << 1),
429 ATA_DMA_MASK_CFA = (1 << 2),
430
431
432 ATAPI_READ = 0,
433 ATAPI_WRITE = 1,
434 ATAPI_READ_CD = 2,
435 ATAPI_PASS_THRU = 3,
436 ATAPI_MISC = 4,
437
438
439 ATA_TIMING_SETUP = (1 << 0),
440 ATA_TIMING_ACT8B = (1 << 1),
441 ATA_TIMING_REC8B = (1 << 2),
442 ATA_TIMING_CYC8B = (1 << 3),
443 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
444 ATA_TIMING_CYC8B,
445 ATA_TIMING_ACTIVE = (1 << 4),
446 ATA_TIMING_RECOVER = (1 << 5),
447 ATA_TIMING_DMACK_HOLD = (1 << 6),
448 ATA_TIMING_CYCLE = (1 << 7),
449 ATA_TIMING_UDMA = (1 << 8),
450 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
451 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
452 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
453 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
454 ATA_TIMING_UDMA,
455
456
457 ATA_ACPI_FILTER_SETXFER = 1 << 0,
458 ATA_ACPI_FILTER_LOCK = 1 << 1,
459 ATA_ACPI_FILTER_DIPM = 1 << 2,
460 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,
461 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,
462
463 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
464 ATA_ACPI_FILTER_LOCK |
465 ATA_ACPI_FILTER_DIPM,
466};
467
468enum ata_xfer_mask {
469 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
470 << ATA_SHIFT_PIO,
471 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
472 << ATA_SHIFT_MWDMA,
473 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
474 << ATA_SHIFT_UDMA,
475};
476
477enum hsm_task_states {
478 HSM_ST_IDLE,
479 HSM_ST_FIRST,
480
481 HSM_ST,
482 HSM_ST_LAST,
483 HSM_ST_ERR,
484};
485
486enum ata_completion_errors {
487 AC_ERR_DEV = (1 << 0),
488 AC_ERR_HSM = (1 << 1),
489 AC_ERR_TIMEOUT = (1 << 2),
490 AC_ERR_MEDIA = (1 << 3),
491 AC_ERR_ATA_BUS = (1 << 4),
492 AC_ERR_HOST_BUS = (1 << 5),
493 AC_ERR_SYSTEM = (1 << 6),
494 AC_ERR_INVALID = (1 << 7),
495 AC_ERR_OTHER = (1 << 8),
496 AC_ERR_NODEV_HINT = (1 << 9),
497 AC_ERR_NCQ = (1 << 10),
498};
499
500
501
502
503
504enum ata_lpm_policy {
505 ATA_LPM_UNKNOWN,
506 ATA_LPM_MAX_POWER,
507 ATA_LPM_MED_POWER,
508 ATA_LPM_MED_POWER_WITH_DIPM,
509 ATA_LPM_MIN_POWER_WITH_PARTIAL,
510 ATA_LPM_MIN_POWER,
511};
512
513enum ata_lpm_hints {
514 ATA_LPM_EMPTY = (1 << 0),
515 ATA_LPM_HIPM = (1 << 1),
516 ATA_LPM_WAKE_ONLY = (1 << 2),
517};
518
519
520struct scsi_device;
521struct ata_port_operations;
522struct ata_port;
523struct ata_link;
524struct ata_queued_cmd;
525
526
527typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
528typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
529typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
530 unsigned long deadline);
531typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
532
533extern struct device_attribute dev_attr_link_power_management_policy;
534extern struct device_attribute dev_attr_unload_heads;
535extern struct device_attribute dev_attr_ncq_prio_enable;
536extern struct device_attribute dev_attr_em_message_type;
537extern struct device_attribute dev_attr_em_message;
538extern struct device_attribute dev_attr_sw_activity;
539
540enum sw_activity {
541 OFF,
542 BLINK_ON,
543 BLINK_OFF,
544};
545
546struct ata_taskfile {
547 unsigned long flags;
548 u8 protocol;
549
550 u8 ctl;
551
552 u8 hob_feature;
553 u8 hob_nsect;
554 u8 hob_lbal;
555 u8 hob_lbam;
556 u8 hob_lbah;
557
558 u8 feature;
559 u8 nsect;
560 u8 lbal;
561 u8 lbam;
562 u8 lbah;
563
564 u8 device;
565
566 u8 command;
567
568 u32 auxiliary;
569
570
571};
572
573#ifdef CONFIG_ATA_SFF
574struct ata_ioports {
575 void __iomem *cmd_addr;
576 void __iomem *data_addr;
577 void __iomem *error_addr;
578 void __iomem *feature_addr;
579 void __iomem *nsect_addr;
580 void __iomem *lbal_addr;
581 void __iomem *lbam_addr;
582 void __iomem *lbah_addr;
583 void __iomem *device_addr;
584 void __iomem *status_addr;
585 void __iomem *command_addr;
586 void __iomem *altstatus_addr;
587 void __iomem *ctl_addr;
588#ifdef CONFIG_ATA_BMDMA
589 void __iomem *bmdma_addr;
590#endif
591 void __iomem *scr_addr;
592};
593#endif
594
595struct ata_host {
596 spinlock_t lock;
597 struct device *dev;
598 void __iomem * const *iomap;
599 unsigned int n_ports;
600 unsigned int n_tags;
601 void *private_data;
602 struct ata_port_operations *ops;
603 unsigned long flags;
604 struct kref kref;
605
606 struct mutex eh_mutex;
607 struct task_struct *eh_owner;
608
609 struct ata_port *simplex_claimed;
610 struct ata_port *ports[0];
611};
612
613struct ata_queued_cmd {
614 struct ata_port *ap;
615 struct ata_device *dev;
616
617 struct scsi_cmnd *scsicmd;
618 void (*scsidone)(struct scsi_cmnd *);
619
620 struct ata_taskfile tf;
621 u8 cdb[ATAPI_CDB_LEN];
622
623 unsigned long flags;
624 unsigned int tag;
625 unsigned int hw_tag;
626 unsigned int n_elem;
627 unsigned int orig_n_elem;
628
629 int dma_dir;
630
631 unsigned int sect_size;
632
633 unsigned int nbytes;
634 unsigned int extrabytes;
635 unsigned int curbytes;
636
637 struct scatterlist sgent;
638
639 struct scatterlist *sg;
640
641 struct scatterlist *cursg;
642 unsigned int cursg_ofs;
643
644 unsigned int err_mask;
645 struct ata_taskfile result_tf;
646 ata_qc_cb_t complete_fn;
647
648 void *private_data;
649 void *lldd_task;
650};
651
652struct ata_port_stats {
653 unsigned long unhandled_irq;
654 unsigned long idle_irq;
655 unsigned long rw_reqbuf;
656};
657
658struct ata_ering_entry {
659 unsigned int eflags;
660 unsigned int err_mask;
661 u64 timestamp;
662};
663
664struct ata_ering {
665 int cursor;
666 struct ata_ering_entry ring[ATA_ERING_SIZE];
667};
668
669struct ata_device {
670 struct ata_link *link;
671 unsigned int devno;
672 unsigned int horkage;
673 unsigned long flags;
674 struct scsi_device *sdev;
675 void *private_data;
676#ifdef CONFIG_ATA_ACPI
677 union acpi_object *gtf_cache;
678 unsigned int gtf_filter;
679#endif
680#ifdef CONFIG_SATA_ZPODD
681 void *zpodd;
682#endif
683 struct device tdev;
684
685 u64 n_sectors;
686 u64 n_native_sectors;
687 unsigned int class;
688 unsigned long unpark_deadline;
689
690 u8 pio_mode;
691 u8 dma_mode;
692 u8 xfer_mode;
693 unsigned int xfer_shift;
694
695 unsigned int multi_count;
696
697 unsigned int max_sectors;
698 unsigned int cdb_len;
699
700
701 unsigned long pio_mask;
702 unsigned long mwdma_mask;
703 unsigned long udma_mask;
704
705
706 u16 cylinders;
707 u16 heads;
708 u16 sectors;
709
710 union {
711 u16 id[ATA_ID_WORDS];
712 u32 gscr[SATA_PMP_GSCR_DWORDS];
713 } ____cacheline_aligned;
714
715
716 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
717
718
719 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
720 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
721
722
723 u32 zac_zoned_cap;
724 u32 zac_zones_optimal_open;
725 u32 zac_zones_optimal_nonseq;
726 u32 zac_zones_max_open;
727
728
729 int spdn_cnt;
730
731 struct ata_ering ering;
732};
733
734
735
736
737#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
738#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
739
740struct ata_eh_info {
741 struct ata_device *dev;
742 u32 serror;
743 unsigned int err_mask;
744 unsigned int action;
745 unsigned int dev_action[ATA_MAX_DEVICES];
746 unsigned int flags;
747
748 unsigned int probe_mask;
749
750 char desc[ATA_EH_DESC_LEN];
751 int desc_len;
752};
753
754struct ata_eh_context {
755 struct ata_eh_info i;
756 int tries[ATA_MAX_DEVICES];
757 int cmd_timeout_idx[ATA_MAX_DEVICES]
758 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
759 unsigned int classes[ATA_MAX_DEVICES];
760 unsigned int did_probe_mask;
761 unsigned int unloaded_mask;
762 unsigned int saved_ncq_enabled;
763 u8 saved_xfer_mode[ATA_MAX_DEVICES];
764
765 unsigned long last_reset;
766};
767
768struct ata_acpi_drive
769{
770 u32 pio;
771 u32 dma;
772} __packed;
773
774struct ata_acpi_gtm {
775 struct ata_acpi_drive drive[2];
776 u32 flags;
777} __packed;
778
779struct ata_link {
780 struct ata_port *ap;
781 int pmp;
782
783 struct device tdev;
784 unsigned int active_tag;
785 u32 sactive;
786
787 unsigned int flags;
788
789 u32 saved_scontrol;
790 unsigned int hw_sata_spd_limit;
791 unsigned int sata_spd_limit;
792 unsigned int sata_spd;
793 enum ata_lpm_policy lpm_policy;
794
795
796 struct ata_eh_info eh_info;
797
798 struct ata_eh_context eh_context;
799
800 struct ata_device device[ATA_MAX_DEVICES];
801
802 unsigned long last_lpm_change;
803};
804#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
805#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
806
807struct ata_port {
808 struct Scsi_Host *scsi_host;
809 struct ata_port_operations *ops;
810 spinlock_t *lock;
811
812
813 unsigned long flags;
814
815 unsigned int pflags;
816 unsigned int print_id;
817 unsigned int local_port_no;
818 unsigned int port_no;
819
820#ifdef CONFIG_ATA_SFF
821 struct ata_ioports ioaddr;
822 u8 ctl;
823 u8 last_ctl;
824 struct ata_link* sff_pio_task_link;
825 struct delayed_work sff_pio_task;
826#ifdef CONFIG_ATA_BMDMA
827 struct ata_bmdma_prd *bmdma_prd;
828 dma_addr_t bmdma_prd_dma;
829#endif
830#endif
831
832 unsigned int pio_mask;
833 unsigned int mwdma_mask;
834 unsigned int udma_mask;
835 unsigned int cbl;
836
837 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1];
838 unsigned long sas_tag_allocated;
839 u64 qc_active;
840 int nr_active_links;
841 unsigned int sas_last_tag;
842
843 struct ata_link link;
844 struct ata_link *slave_link;
845
846 int nr_pmp_links;
847 struct ata_link *pmp_link;
848 struct ata_link *excl_link;
849
850 struct ata_port_stats stats;
851 struct ata_host *host;
852 struct device *dev;
853 struct device tdev;
854
855 struct mutex scsi_scan_mutex;
856 struct delayed_work hotplug_task;
857 struct work_struct scsi_rescan_task;
858
859 unsigned int hsm_task_state;
860
861 u32 msg_enable;
862 struct list_head eh_done_q;
863 wait_queue_head_t eh_wait_q;
864 int eh_tries;
865 struct completion park_req_pending;
866
867 pm_message_t pm_mesg;
868 enum ata_lpm_policy target_lpm_policy;
869
870 struct timer_list fastdrain_timer;
871 unsigned long fastdrain_cnt;
872
873 int em_message_type;
874 void *private_data;
875
876#ifdef CONFIG_ATA_ACPI
877 struct ata_acpi_gtm __acpi_init_gtm;
878#endif
879
880 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
881};
882
883
884
885
886
887
888#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
889
890struct ata_port_operations {
891
892
893
894 int (*qc_defer)(struct ata_queued_cmd *qc);
895 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
896 void (*qc_prep)(struct ata_queued_cmd *qc);
897 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
898 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
899
900
901
902
903 int (*cable_detect)(struct ata_port *ap);
904 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
905 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
906 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
907 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
908 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
909
910 void (*dev_config)(struct ata_device *dev);
911
912 void (*freeze)(struct ata_port *ap);
913 void (*thaw)(struct ata_port *ap);
914 ata_prereset_fn_t prereset;
915 ata_reset_fn_t softreset;
916 ata_reset_fn_t hardreset;
917 ata_postreset_fn_t postreset;
918 ata_prereset_fn_t pmp_prereset;
919 ata_reset_fn_t pmp_softreset;
920 ata_reset_fn_t pmp_hardreset;
921 ata_postreset_fn_t pmp_postreset;
922 void (*error_handler)(struct ata_port *ap);
923 void (*lost_interrupt)(struct ata_port *ap);
924 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
925 void (*sched_eh)(struct ata_port *ap);
926 void (*end_eh)(struct ata_port *ap);
927
928
929
930
931 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
932 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
933 void (*pmp_attach)(struct ata_port *ap);
934 void (*pmp_detach)(struct ata_port *ap);
935 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
936 unsigned hints);
937
938
939
940
941 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
942 int (*port_resume)(struct ata_port *ap);
943 int (*port_start)(struct ata_port *ap);
944 void (*port_stop)(struct ata_port *ap);
945 void (*host_stop)(struct ata_host *host);
946
947#ifdef CONFIG_ATA_SFF
948
949
950
951 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
952 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
953 u8 (*sff_check_status)(struct ata_port *ap);
954 u8 (*sff_check_altstatus)(struct ata_port *ap);
955 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
956 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
957 void (*sff_exec_command)(struct ata_port *ap,
958 const struct ata_taskfile *tf);
959 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
960 unsigned char *buf, unsigned int buflen, int rw);
961 void (*sff_irq_on)(struct ata_port *);
962 bool (*sff_irq_check)(struct ata_port *);
963 void (*sff_irq_clear)(struct ata_port *);
964 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
965
966#ifdef CONFIG_ATA_BMDMA
967 void (*bmdma_setup)(struct ata_queued_cmd *qc);
968 void (*bmdma_start)(struct ata_queued_cmd *qc);
969 void (*bmdma_stop)(struct ata_queued_cmd *qc);
970 u8 (*bmdma_status)(struct ata_port *ap);
971#endif
972#endif
973
974 ssize_t (*em_show)(struct ata_port *ap, char *buf);
975 ssize_t (*em_store)(struct ata_port *ap, const char *message,
976 size_t size);
977 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
978 ssize_t (*sw_activity_store)(struct ata_device *dev,
979 enum sw_activity val);
980 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
981 ssize_t size);
982
983
984
985
986 void (*phy_reset)(struct ata_port *ap);
987 void (*eng_timeout)(struct ata_port *ap);
988
989
990
991
992
993 const struct ata_port_operations *inherits;
994};
995
996struct ata_port_info {
997 unsigned long flags;
998 unsigned long link_flags;
999 unsigned long pio_mask;
1000 unsigned long mwdma_mask;
1001 unsigned long udma_mask;
1002 struct ata_port_operations *port_ops;
1003 void *private_data;
1004};
1005
1006struct ata_timing {
1007 unsigned short mode;
1008 unsigned short setup;
1009 unsigned short act8b;
1010 unsigned short rec8b;
1011 unsigned short cyc8b;
1012 unsigned short active;
1013 unsigned short recover;
1014 unsigned short dmack_hold;
1015 unsigned short cycle;
1016 unsigned short udma;
1017};
1018
1019
1020
1021
1022extern const unsigned long sata_deb_timing_normal[];
1023extern const unsigned long sata_deb_timing_hotplug[];
1024extern const unsigned long sata_deb_timing_long[];
1025
1026extern struct ata_port_operations ata_dummy_port_ops;
1027extern const struct ata_port_info ata_dummy_port_info;
1028
1029static inline bool ata_is_atapi(u8 prot)
1030{
1031 return prot & ATA_PROT_FLAG_ATAPI;
1032}
1033
1034static inline bool ata_is_pio(u8 prot)
1035{
1036 return prot & ATA_PROT_FLAG_PIO;
1037}
1038
1039static inline bool ata_is_dma(u8 prot)
1040{
1041 return prot & ATA_PROT_FLAG_DMA;
1042}
1043
1044static inline bool ata_is_ncq(u8 prot)
1045{
1046 return prot & ATA_PROT_FLAG_NCQ;
1047}
1048
1049static inline bool ata_is_data(u8 prot)
1050{
1051 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1052}
1053
1054static inline int is_multi_taskfile(struct ata_taskfile *tf)
1055{
1056 return (tf->command == ATA_CMD_READ_MULTI) ||
1057 (tf->command == ATA_CMD_WRITE_MULTI) ||
1058 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1059 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1060 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1061}
1062
1063static inline const unsigned long *
1064sata_ehc_deb_timing(struct ata_eh_context *ehc)
1065{
1066 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1067 return sata_deb_timing_hotplug;
1068 else
1069 return sata_deb_timing_normal;
1070}
1071
1072static inline int ata_port_is_dummy(struct ata_port *ap)
1073{
1074 return ap->ops == &ata_dummy_port_ops;
1075}
1076
1077extern int sata_set_spd(struct ata_link *link);
1078extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1079extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1080 int (*check_ready)(struct ata_link *link));
1081extern int sata_link_debounce(struct ata_link *link,
1082 const unsigned long *params, unsigned long deadline);
1083extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1084 unsigned long deadline);
1085extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1086 bool spm_wakeup);
1087extern int sata_link_hardreset(struct ata_link *link,
1088 const unsigned long *timing, unsigned long deadline,
1089 bool *online, int (*check_ready)(struct ata_link *));
1090extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1091 unsigned long deadline);
1092extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1093
1094extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1095extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1096 const struct ata_port_info * const * ppi, int n_ports);
1097extern int ata_slave_link_init(struct ata_port *ap);
1098extern void ata_host_get(struct ata_host *host);
1099extern void ata_host_put(struct ata_host *host);
1100extern int ata_host_start(struct ata_host *host);
1101extern int ata_host_register(struct ata_host *host,
1102 struct scsi_host_template *sht);
1103extern int ata_host_activate(struct ata_host *host, int irq,
1104 irq_handler_t irq_handler, unsigned long irq_flags,
1105 struct scsi_host_template *sht);
1106extern void ata_host_detach(struct ata_host *host);
1107extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1108extern int ata_scsi_detect(struct scsi_host_template *sht);
1109extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
1110 void __user *arg);
1111extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1112extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1113 unsigned int cmd, void __user *arg);
1114extern void ata_sas_port_destroy(struct ata_port *);
1115extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1116 struct ata_port_info *, struct Scsi_Host *);
1117extern void ata_sas_async_probe(struct ata_port *ap);
1118extern int ata_sas_sync_probe(struct ata_port *ap);
1119extern int ata_sas_port_init(struct ata_port *);
1120extern int ata_sas_port_start(struct ata_port *ap);
1121extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
1122extern void ata_sas_tport_delete(struct ata_port *ap);
1123extern void ata_sas_port_stop(struct ata_port *ap);
1124extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1125extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1126extern int sata_scr_valid(struct ata_link *link);
1127extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1128extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1129extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1130extern bool ata_link_online(struct ata_link *link);
1131extern bool ata_link_offline(struct ata_link *link);
1132#ifdef CONFIG_PM
1133extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1134extern void ata_host_resume(struct ata_host *host);
1135extern void ata_sas_port_suspend(struct ata_port *ap);
1136extern void ata_sas_port_resume(struct ata_port *ap);
1137#else
1138static inline void ata_sas_port_suspend(struct ata_port *ap)
1139{
1140}
1141static inline void ata_sas_port_resume(struct ata_port *ap)
1142{
1143}
1144#endif
1145extern int ata_ratelimit(void);
1146extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1147extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1148 u32 val, unsigned long interval, unsigned long timeout);
1149extern int atapi_cmd_type(u8 opcode);
1150extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1151 u8 pmp, int is_cmd, u8 *fis);
1152extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1153extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1154 unsigned long mwdma_mask, unsigned long udma_mask);
1155extern void ata_unpack_xfermask(unsigned long xfer_mask,
1156 unsigned long *pio_mask, unsigned long *mwdma_mask,
1157 unsigned long *udma_mask);
1158extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1159extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1160extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1161extern const char *ata_mode_string(unsigned long xfer_mask);
1162extern unsigned long ata_id_xfermask(const u16 *id);
1163extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1164extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1165extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1166 unsigned int n_elem);
1167extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1168extern void ata_dev_disable(struct ata_device *adev);
1169extern void ata_id_string(const u16 *id, unsigned char *s,
1170 unsigned int ofs, unsigned int len);
1171extern void ata_id_c_string(const u16 *id, unsigned char *s,
1172 unsigned int ofs, unsigned int len);
1173extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1174 struct ata_taskfile *tf, u16 *id);
1175extern void ata_qc_complete(struct ata_queued_cmd *qc);
1176extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
1177extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1178extern int ata_std_bios_param(struct scsi_device *sdev,
1179 struct block_device *bdev,
1180 sector_t capacity, int geom[]);
1181extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1182extern int ata_scsi_slave_config(struct scsi_device *sdev);
1183extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1184extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1185 int queue_depth);
1186extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1187 int queue_depth);
1188extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1189extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1190extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1191extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1192extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1193
1194extern int ata_cable_40wire(struct ata_port *ap);
1195extern int ata_cable_80wire(struct ata_port *ap);
1196extern int ata_cable_sata(struct ata_port *ap);
1197extern int ata_cable_ignore(struct ata_port *ap);
1198extern int ata_cable_unknown(struct ata_port *ap);
1199
1200
1201extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1202extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1203extern int ata_timing_compute(struct ata_device *, unsigned short,
1204 struct ata_timing *, int, int);
1205extern void ata_timing_merge(const struct ata_timing *,
1206 const struct ata_timing *, struct ata_timing *,
1207 unsigned int);
1208extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1209
1210
1211#ifdef CONFIG_PCI
1212struct pci_dev;
1213
1214struct pci_bits {
1215 unsigned int reg;
1216 unsigned int width;
1217 unsigned long mask;
1218 unsigned long val;
1219};
1220
1221extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1222extern void ata_pci_remove_one(struct pci_dev *pdev);
1223
1224#ifdef CONFIG_PM
1225extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1226extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1227extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1228extern int ata_pci_device_resume(struct pci_dev *pdev);
1229#endif
1230#endif
1231
1232struct platform_device;
1233
1234extern int ata_platform_remove_one(struct platform_device *pdev);
1235
1236
1237
1238
1239#ifdef CONFIG_ATA_ACPI
1240static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1241{
1242 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1243 return &ap->__acpi_init_gtm;
1244 return NULL;
1245}
1246int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1247int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1248unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1249 const struct ata_acpi_gtm *gtm);
1250int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1251#else
1252static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1253{
1254 return NULL;
1255}
1256
1257static inline int ata_acpi_stm(const struct ata_port *ap,
1258 struct ata_acpi_gtm *stm)
1259{
1260 return -ENOSYS;
1261}
1262
1263static inline int ata_acpi_gtm(const struct ata_port *ap,
1264 struct ata_acpi_gtm *stm)
1265{
1266 return -ENOSYS;
1267}
1268
1269static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1270 const struct ata_acpi_gtm *gtm)
1271{
1272 return 0;
1273}
1274
1275static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1276 const struct ata_acpi_gtm *gtm)
1277{
1278 return 0;
1279}
1280#endif
1281
1282
1283
1284
1285extern void ata_port_schedule_eh(struct ata_port *ap);
1286extern void ata_port_wait_eh(struct ata_port *ap);
1287extern int ata_link_abort(struct ata_link *link);
1288extern int ata_port_abort(struct ata_port *ap);
1289extern int ata_port_freeze(struct ata_port *ap);
1290extern int sata_async_notification(struct ata_port *ap);
1291
1292extern void ata_eh_freeze_port(struct ata_port *ap);
1293extern void ata_eh_thaw_port(struct ata_port *ap);
1294
1295extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1296extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1297extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1298
1299extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1300 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1301 ata_postreset_fn_t postreset);
1302extern void ata_std_error_handler(struct ata_port *ap);
1303extern void ata_std_sched_eh(struct ata_port *ap);
1304extern void ata_std_end_eh(struct ata_port *ap);
1305extern int ata_link_nr_enabled(struct ata_link *link);
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328extern const struct ata_port_operations ata_base_port_ops;
1329extern const struct ata_port_operations sata_port_ops;
1330extern struct device_attribute *ata_common_sdev_attrs[];
1331
1332
1333
1334
1335
1336
1337
1338#define ATA_BASE_SHT(drv_name) \
1339 .module = THIS_MODULE, \
1340 .name = drv_name, \
1341 .ioctl = ata_scsi_ioctl, \
1342 .queuecommand = ata_scsi_queuecmd, \
1343 .can_queue = ATA_DEF_QUEUE, \
1344 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1345 .this_id = ATA_SHT_THIS_ID, \
1346 .emulated = ATA_SHT_EMULATED, \
1347 .proc_name = drv_name, \
1348 .slave_configure = ata_scsi_slave_config, \
1349 .slave_destroy = ata_scsi_slave_destroy, \
1350 .bios_param = ata_std_bios_param, \
1351 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1352 .sdev_attrs = ata_common_sdev_attrs
1353
1354#define ATA_NCQ_SHT(drv_name) \
1355 ATA_BASE_SHT(drv_name), \
1356 .change_queue_depth = ata_scsi_change_queue_depth
1357
1358
1359
1360
1361#ifdef CONFIG_SATA_PMP
1362static inline bool sata_pmp_supported(struct ata_port *ap)
1363{
1364 return ap->flags & ATA_FLAG_PMP;
1365}
1366
1367static inline bool sata_pmp_attached(struct ata_port *ap)
1368{
1369 return ap->nr_pmp_links != 0;
1370}
1371
1372static inline bool ata_is_host_link(const struct ata_link *link)
1373{
1374 return link == &link->ap->link || link == link->ap->slave_link;
1375}
1376#else
1377static inline bool sata_pmp_supported(struct ata_port *ap)
1378{
1379 return false;
1380}
1381
1382static inline bool sata_pmp_attached(struct ata_port *ap)
1383{
1384 return false;
1385}
1386
1387static inline bool ata_is_host_link(const struct ata_link *link)
1388{
1389 return 1;
1390}
1391#endif
1392
1393static inline int sata_srst_pmp(struct ata_link *link)
1394{
1395 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1396 return SATA_PMP_CTRL_PORT;
1397 return link->pmp;
1398}
1399
1400
1401
1402
1403__printf(3, 4)
1404void ata_port_printk(const struct ata_port *ap, const char *level,
1405 const char *fmt, ...);
1406__printf(3, 4)
1407void ata_link_printk(const struct ata_link *link, const char *level,
1408 const char *fmt, ...);
1409__printf(3, 4)
1410void ata_dev_printk(const struct ata_device *dev, const char *level,
1411 const char *fmt, ...);
1412
1413#define ata_port_err(ap, fmt, ...) \
1414 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1415#define ata_port_warn(ap, fmt, ...) \
1416 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1417#define ata_port_notice(ap, fmt, ...) \
1418 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1419#define ata_port_info(ap, fmt, ...) \
1420 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1421#define ata_port_dbg(ap, fmt, ...) \
1422 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1423
1424#define ata_link_err(link, fmt, ...) \
1425 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1426#define ata_link_warn(link, fmt, ...) \
1427 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1428#define ata_link_notice(link, fmt, ...) \
1429 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1430#define ata_link_info(link, fmt, ...) \
1431 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1432#define ata_link_dbg(link, fmt, ...) \
1433 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1434
1435#define ata_dev_err(dev, fmt, ...) \
1436 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1437#define ata_dev_warn(dev, fmt, ...) \
1438 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1439#define ata_dev_notice(dev, fmt, ...) \
1440 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1441#define ata_dev_info(dev, fmt, ...) \
1442 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1443#define ata_dev_dbg(dev, fmt, ...) \
1444 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1445
1446void ata_print_version(const struct device *dev, const char *version);
1447
1448
1449
1450
1451extern __printf(2, 3)
1452void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1453extern __printf(2, 3)
1454void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1455extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1456
1457static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1458{
1459 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1460 ehi->flags |= ATA_EHI_HOTPLUGGED;
1461 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1462 ehi->err_mask |= AC_ERR_ATA_BUS;
1463}
1464
1465
1466
1467
1468extern __printf(2, 3)
1469void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1470#ifdef CONFIG_PCI
1471extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1472 const char *name);
1473#endif
1474
1475static inline bool ata_tag_internal(unsigned int tag)
1476{
1477 return tag == ATA_TAG_INTERNAL;
1478}
1479
1480static inline bool ata_tag_valid(unsigned int tag)
1481{
1482 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
1483}
1484
1485#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1486 for ((tag) = 0; (tag) < (max_tag) && \
1487 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1488
1489
1490
1491
1492
1493#define ata_qc_for_each_raw(ap, qc, tag) \
1494 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1495
1496
1497
1498
1499#define ata_qc_for_each(ap, qc, tag) \
1500 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1501
1502
1503
1504
1505#define ata_qc_for_each_with_internal(ap, qc, tag) \
1506 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1507
1508
1509
1510
1511static inline unsigned int ata_class_enabled(unsigned int class)
1512{
1513 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1514 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1515 class == ATA_DEV_ZAC;
1516}
1517
1518static inline unsigned int ata_class_disabled(unsigned int class)
1519{
1520 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1521 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1522 class == ATA_DEV_ZAC_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 bool ata_fpdma_read_log_supported(struct ata_device *dev)
1641{
1642 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1643 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1644 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1645}
1646
1647static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1648{
1649 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1650 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1651 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1652}
1653
1654static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1655{
1656 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1657 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1658}
1659
1660static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1661{
1662 qc->tf.ctl |= ATA_NIEN;
1663}
1664
1665static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1666 unsigned int tag)
1667{
1668 if (ata_tag_valid(tag))
1669 return &ap->qcmd[tag];
1670 return NULL;
1671}
1672
1673static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1674 unsigned int tag)
1675{
1676 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1677
1678 if (unlikely(!qc) || !ap->ops->error_handler)
1679 return qc;
1680
1681 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1682 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1683 return qc;
1684
1685 return NULL;
1686}
1687
1688static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1689{
1690 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1691}
1692
1693static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1694{
1695 memset(tf, 0, sizeof(*tf));
1696
1697#ifdef CONFIG_ATA_SFF
1698 tf->ctl = dev->link->ap->ctl;
1699#else
1700 tf->ctl = ATA_DEVCTL_OBS;
1701#endif
1702 if (dev->devno == 0)
1703 tf->device = ATA_DEVICE_OBS;
1704 else
1705 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1706}
1707
1708static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1709{
1710 qc->dma_dir = DMA_NONE;
1711 qc->sg = NULL;
1712 qc->flags = 0;
1713 qc->cursg = NULL;
1714 qc->cursg_ofs = 0;
1715 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1716 qc->n_elem = 0;
1717 qc->err_mask = 0;
1718 qc->sect_size = ATA_SECT_SIZE;
1719
1720 ata_tf_init(qc->dev, &qc->tf);
1721
1722
1723 qc->result_tf.command = ATA_DRDY;
1724 qc->result_tf.feature = 0;
1725}
1726
1727static inline int ata_try_flush_cache(const struct ata_device *dev)
1728{
1729 return ata_id_wcache_enabled(dev->id) ||
1730 ata_id_has_flush(dev->id) ||
1731 ata_id_has_flush_ext(dev->id);
1732}
1733
1734static inline unsigned int ac_err_mask(u8 status)
1735{
1736 if (status & (ATA_BUSY | ATA_DRQ))
1737 return AC_ERR_HSM;
1738 if (status & (ATA_ERR | ATA_DF))
1739 return AC_ERR_DEV;
1740 return 0;
1741}
1742
1743static inline unsigned int __ac_err_mask(u8 status)
1744{
1745 unsigned int mask = ac_err_mask(status);
1746 if (mask == 0)
1747 return AC_ERR_OTHER;
1748 return mask;
1749}
1750
1751static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1752{
1753 return *(struct ata_port **)&host->hostdata[0];
1754}
1755
1756static inline int ata_check_ready(u8 status)
1757{
1758 if (!(status & ATA_BUSY))
1759 return 1;
1760
1761
1762 if (status == 0xff)
1763 return -ENODEV;
1764
1765 return 0;
1766}
1767
1768static inline unsigned long ata_deadline(unsigned long from_jiffies,
1769 unsigned long timeout_msecs)
1770{
1771 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1772}
1773
1774
1775
1776
1777
1778static inline int ata_using_mwdma(struct ata_device *adev)
1779{
1780 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1781 return 1;
1782 return 0;
1783}
1784
1785static inline int ata_using_udma(struct ata_device *adev)
1786{
1787 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1788 return 1;
1789 return 0;
1790}
1791
1792static inline int ata_dma_enabled(struct ata_device *adev)
1793{
1794 return (adev->dma_mode == 0xFF ? 0 : 1);
1795}
1796
1797
1798
1799
1800#ifdef CONFIG_SATA_PMP
1801
1802extern const struct ata_port_operations sata_pmp_port_ops;
1803
1804extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1805extern void sata_pmp_error_handler(struct ata_port *ap);
1806
1807#else
1808
1809#define sata_pmp_port_ops sata_port_ops
1810#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1811#define sata_pmp_error_handler ata_std_error_handler
1812
1813#endif
1814
1815
1816
1817
1818
1819#ifdef CONFIG_ATA_SFF
1820
1821extern const struct ata_port_operations ata_sff_port_ops;
1822extern const struct ata_port_operations ata_bmdma32_port_ops;
1823
1824
1825#define ATA_PIO_SHT(drv_name) \
1826 ATA_BASE_SHT(drv_name), \
1827 .sg_tablesize = LIBATA_MAX_PRD, \
1828 .dma_boundary = ATA_DMA_BOUNDARY
1829
1830extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1831extern u8 ata_sff_check_status(struct ata_port *ap);
1832extern void ata_sff_pause(struct ata_port *ap);
1833extern void ata_sff_dma_pause(struct ata_port *ap);
1834extern int ata_sff_busy_sleep(struct ata_port *ap,
1835 unsigned long timeout_pat, unsigned long timeout);
1836extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1837extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1838extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1839extern void ata_sff_exec_command(struct ata_port *ap,
1840 const struct ata_taskfile *tf);
1841extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
1842 unsigned char *buf, unsigned int buflen, int rw);
1843extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
1844 unsigned char *buf, unsigned int buflen, int rw);
1845extern void ata_sff_irq_on(struct ata_port *ap);
1846extern void ata_sff_irq_clear(struct ata_port *ap);
1847extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1848 u8 status, int in_wq);
1849extern void ata_sff_queue_work(struct work_struct *work);
1850extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1851 unsigned long delay);
1852extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1853extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1854extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1855extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1856 struct ata_queued_cmd *qc);
1857extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1858extern void ata_sff_lost_interrupt(struct ata_port *ap);
1859extern void ata_sff_freeze(struct ata_port *ap);
1860extern void ata_sff_thaw(struct ata_port *ap);
1861extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1862extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1863 u8 *r_err);
1864extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1865 unsigned long deadline);
1866extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1867 unsigned long deadline);
1868extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1869 unsigned long deadline);
1870extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1871extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1872extern void ata_sff_error_handler(struct ata_port *ap);
1873extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1874#ifdef CONFIG_PCI
1875extern int ata_pci_sff_init_host(struct ata_host *host);
1876extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1877 const struct ata_port_info * const * ppi,
1878 struct ata_host **r_host);
1879extern int ata_pci_sff_activate_host(struct ata_host *host,
1880 irq_handler_t irq_handler,
1881 struct scsi_host_template *sht);
1882extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1883 const struct ata_port_info * const * ppi,
1884 struct scsi_host_template *sht, void *host_priv, int hflags);
1885#endif
1886
1887#ifdef CONFIG_ATA_BMDMA
1888
1889extern const struct ata_port_operations ata_bmdma_port_ops;
1890
1891#define ATA_BMDMA_SHT(drv_name) \
1892 ATA_BASE_SHT(drv_name), \
1893 .sg_tablesize = LIBATA_MAX_PRD, \
1894 .dma_boundary = ATA_DMA_BOUNDARY
1895
1896extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1897extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1898extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1899extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1900 struct ata_queued_cmd *qc);
1901extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1902extern void ata_bmdma_error_handler(struct ata_port *ap);
1903extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1904extern void ata_bmdma_irq_clear(struct ata_port *ap);
1905extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1906extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1907extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1908extern u8 ata_bmdma_status(struct ata_port *ap);
1909extern int ata_bmdma_port_start(struct ata_port *ap);
1910extern int ata_bmdma_port_start32(struct ata_port *ap);
1911
1912#ifdef CONFIG_PCI
1913extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1914extern void ata_pci_bmdma_init(struct ata_host *host);
1915extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1916 const struct ata_port_info * const * ppi,
1917 struct ata_host **r_host);
1918extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1919 const struct ata_port_info * const * ppi,
1920 struct scsi_host_template *sht,
1921 void *host_priv, int hflags);
1922#endif
1923#endif
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1938static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1939 unsigned int max)
1940{
1941 u8 status;
1942
1943 do {
1944 udelay(10);
1945 status = ap->ops->sff_check_status(ap);
1946 max--;
1947 } while (status != 0xff && (status & bits) && (max > 0));
1948
1949 return status;
1950}
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1961
1962static inline u8 ata_wait_idle(struct ata_port *ap)
1963{
1964 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1965
1966#ifdef ATA_DEBUG
1967 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1968 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1969 status);
1970#endif
1971
1972 return status;
1973}
1974#endif
1975
1976#endif
1977