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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#include <linux/async.h>
26
27
28
29
30
31#ifdef CONFIG_ATA_NONSTANDARD
32#include <asm/libata-portmap.h>
33#else
34#define ATA_PRIMARY_IRQ(dev) 14
35#define ATA_SECONDARY_IRQ(dev) 15
36#endif
37
38
39
40
41
42#undef ATA_DEBUG
43#undef ATA_VERBOSE_DEBUG
44#undef ATA_IRQ_TRAP
45#undef ATA_NDEBUG
46
47
48
49#ifdef ATA_DEBUG
50#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
51#ifdef ATA_VERBOSE_DEBUG
52#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
53#else
54#define VPRINTK(fmt, args...)
55#endif
56#else
57#define DPRINTK(fmt, args...)
58#define VPRINTK(fmt, args...)
59#endif
60
61#define ata_print_version_once(dev, version) \
62({ \
63 static bool __print_once; \
64 \
65 if (!__print_once) { \
66 __print_once = true; \
67 ata_print_version(dev, version); \
68 } \
69})
70
71
72#define HAVE_LIBATA_MSG 1
73
74enum {
75 ATA_MSG_DRV = 0x0001,
76 ATA_MSG_INFO = 0x0002,
77 ATA_MSG_PROBE = 0x0004,
78 ATA_MSG_WARN = 0x0008,
79 ATA_MSG_MALLOC = 0x0010,
80 ATA_MSG_CTL = 0x0020,
81 ATA_MSG_INTR = 0x0040,
82 ATA_MSG_ERR = 0x0080,
83};
84
85#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
86#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
87#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
88#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
89#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
90#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
91#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
92#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
93
94static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
95{
96 if (dval < 0 || dval >= (sizeof(u32) * 8))
97 return default_msg_enable_bits;
98 if (!dval)
99 return 0;
100 return (1 << dval) - 1;
101}
102
103
104#define ATA_TAG_POISON 0xfafbfcfdU
105
106enum {
107
108 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
109 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4,
110 ATA_DEF_QUEUE = 1,
111 ATA_MAX_QUEUE = 32,
112 ATA_TAG_INTERNAL = ATA_MAX_QUEUE,
113 ATA_SHORT_PAUSE = 16,
114
115 ATAPI_MAX_DRAIN = 16 << 10,
116
117 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
118
119 ATA_SHT_EMULATED = 1,
120 ATA_SHT_THIS_ID = -1,
121
122
123 ATA_TFLAG_LBA48 = (1 << 0),
124 ATA_TFLAG_ISADDR = (1 << 1),
125 ATA_TFLAG_DEVICE = (1 << 2),
126 ATA_TFLAG_WRITE = (1 << 3),
127 ATA_TFLAG_LBA = (1 << 4),
128 ATA_TFLAG_FUA = (1 << 5),
129 ATA_TFLAG_POLLING = (1 << 6),
130
131
132 ATA_DFLAG_LBA = (1 << 0),
133 ATA_DFLAG_LBA48 = (1 << 1),
134 ATA_DFLAG_CDB_INTR = (1 << 2),
135 ATA_DFLAG_NCQ = (1 << 3),
136 ATA_DFLAG_FLUSH_EXT = (1 << 4),
137 ATA_DFLAG_ACPI_PENDING = (1 << 5),
138 ATA_DFLAG_ACPI_FAILED = (1 << 6),
139 ATA_DFLAG_AN = (1 << 7),
140 ATA_DFLAG_TRUSTED = (1 << 8),
141 ATA_DFLAG_DMADIR = (1 << 10),
142 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
143
144 ATA_DFLAG_PIO = (1 << 12),
145 ATA_DFLAG_NCQ_OFF = (1 << 13),
146 ATA_DFLAG_SLEEPING = (1 << 15),
147 ATA_DFLAG_DUBIOUS_XFER = (1 << 16),
148 ATA_DFLAG_NO_UNLOAD = (1 << 17),
149 ATA_DFLAG_UNLOCK_HPA = (1 << 18),
150 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19),
151 ATA_DFLAG_NCQ_PRIO = (1 << 20),
152 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21),
153 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
154
155 ATA_DFLAG_DETACH = (1 << 24),
156 ATA_DFLAG_DETACHED = (1 << 25),
157
158 ATA_DFLAG_DA = (1 << 26),
159 ATA_DFLAG_DEVSLP = (1 << 27),
160 ATA_DFLAG_ACPI_DISABLED = (1 << 28),
161 ATA_DFLAG_D_SENSE = (1 << 29),
162 ATA_DFLAG_ZAC = (1 << 30),
163
164 ATA_DEV_UNKNOWN = 0,
165 ATA_DEV_ATA = 1,
166 ATA_DEV_ATA_UNSUP = 2,
167 ATA_DEV_ATAPI = 3,
168 ATA_DEV_ATAPI_UNSUP = 4,
169 ATA_DEV_PMP = 5,
170 ATA_DEV_PMP_UNSUP = 6,
171 ATA_DEV_SEMB = 7,
172 ATA_DEV_SEMB_UNSUP = 8,
173 ATA_DEV_ZAC = 9,
174 ATA_DEV_ZAC_UNSUP = 10,
175 ATA_DEV_NONE = 11,
176
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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274
275
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
291
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294
295
296 ATA_TMOUT_PMP_SRST_WAIT = 5000,
297
298
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 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26),
425
426
427
428 ATA_DMA_MASK_ATA = (1 << 0),
429 ATA_DMA_MASK_ATAPI = (1 << 1),
430 ATA_DMA_MASK_CFA = (1 << 2),
431
432
433 ATAPI_READ = 0,
434 ATAPI_WRITE = 1,
435 ATAPI_READ_CD = 2,
436 ATAPI_PASS_THRU = 3,
437 ATAPI_MISC = 4,
438
439
440 ATA_TIMING_SETUP = (1 << 0),
441 ATA_TIMING_ACT8B = (1 << 1),
442 ATA_TIMING_REC8B = (1 << 2),
443 ATA_TIMING_CYC8B = (1 << 3),
444 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
445 ATA_TIMING_CYC8B,
446 ATA_TIMING_ACTIVE = (1 << 4),
447 ATA_TIMING_RECOVER = (1 << 5),
448 ATA_TIMING_DMACK_HOLD = (1 << 6),
449 ATA_TIMING_CYCLE = (1 << 7),
450 ATA_TIMING_UDMA = (1 << 8),
451 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
452 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
453 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
454 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
455 ATA_TIMING_UDMA,
456
457
458 ATA_ACPI_FILTER_SETXFER = 1 << 0,
459 ATA_ACPI_FILTER_LOCK = 1 << 1,
460 ATA_ACPI_FILTER_DIPM = 1 << 2,
461 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,
462 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,
463
464 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
465 ATA_ACPI_FILTER_LOCK |
466 ATA_ACPI_FILTER_DIPM,
467};
468
469enum ata_xfer_mask {
470 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
471 << ATA_SHIFT_PIO,
472 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
473 << ATA_SHIFT_MWDMA,
474 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
475 << ATA_SHIFT_UDMA,
476};
477
478enum hsm_task_states {
479 HSM_ST_IDLE,
480 HSM_ST_FIRST,
481
482 HSM_ST,
483 HSM_ST_LAST,
484 HSM_ST_ERR,
485};
486
487enum ata_completion_errors {
488 AC_ERR_OK = 0,
489 AC_ERR_DEV = (1 << 0),
490 AC_ERR_HSM = (1 << 1),
491 AC_ERR_TIMEOUT = (1 << 2),
492 AC_ERR_MEDIA = (1 << 3),
493 AC_ERR_ATA_BUS = (1 << 4),
494 AC_ERR_HOST_BUS = (1 << 5),
495 AC_ERR_SYSTEM = (1 << 6),
496 AC_ERR_INVALID = (1 << 7),
497 AC_ERR_OTHER = (1 << 8),
498 AC_ERR_NODEV_HINT = (1 << 9),
499 AC_ERR_NCQ = (1 << 10),
500};
501
502
503
504
505
506enum ata_lpm_policy {
507 ATA_LPM_UNKNOWN,
508 ATA_LPM_MAX_POWER,
509 ATA_LPM_MED_POWER,
510 ATA_LPM_MED_POWER_WITH_DIPM,
511 ATA_LPM_MIN_POWER_WITH_PARTIAL,
512 ATA_LPM_MIN_POWER,
513};
514
515enum ata_lpm_hints {
516 ATA_LPM_EMPTY = (1 << 0),
517 ATA_LPM_HIPM = (1 << 1),
518 ATA_LPM_WAKE_ONLY = (1 << 2),
519};
520
521
522struct scsi_device;
523struct ata_port_operations;
524struct ata_port;
525struct ata_link;
526struct ata_queued_cmd;
527
528
529typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
530typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
531typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
532 unsigned long deadline);
533typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
534
535extern struct device_attribute dev_attr_unload_heads;
536#ifdef CONFIG_SATA_HOST
537extern struct device_attribute dev_attr_link_power_management_policy;
538extern struct device_attribute dev_attr_ncq_prio_enable;
539extern struct device_attribute dev_attr_em_message_type;
540extern struct device_attribute dev_attr_em_message;
541extern struct device_attribute dev_attr_sw_activity;
542#endif
543
544enum sw_activity {
545 OFF,
546 BLINK_ON,
547 BLINK_OFF,
548};
549
550struct ata_taskfile {
551 unsigned long flags;
552 u8 protocol;
553
554 u8 ctl;
555
556 u8 hob_feature;
557 u8 hob_nsect;
558 u8 hob_lbal;
559 u8 hob_lbam;
560 u8 hob_lbah;
561
562 u8 feature;
563 u8 nsect;
564 u8 lbal;
565 u8 lbam;
566 u8 lbah;
567
568 u8 device;
569
570 u8 command;
571
572 u32 auxiliary;
573
574
575};
576
577#ifdef CONFIG_ATA_SFF
578struct ata_ioports {
579 void __iomem *cmd_addr;
580 void __iomem *data_addr;
581 void __iomem *error_addr;
582 void __iomem *feature_addr;
583 void __iomem *nsect_addr;
584 void __iomem *lbal_addr;
585 void __iomem *lbam_addr;
586 void __iomem *lbah_addr;
587 void __iomem *device_addr;
588 void __iomem *status_addr;
589 void __iomem *command_addr;
590 void __iomem *altstatus_addr;
591 void __iomem *ctl_addr;
592#ifdef CONFIG_ATA_BMDMA
593 void __iomem *bmdma_addr;
594#endif
595 void __iomem *scr_addr;
596};
597#endif
598
599struct ata_host {
600 spinlock_t lock;
601 struct device *dev;
602 void __iomem * const *iomap;
603 unsigned int n_ports;
604 unsigned int n_tags;
605 void *private_data;
606 struct ata_port_operations *ops;
607 unsigned long flags;
608 struct kref kref;
609
610 struct mutex eh_mutex;
611 struct task_struct *eh_owner;
612
613 struct ata_port *simplex_claimed;
614 struct ata_port *ports[];
615};
616
617struct ata_queued_cmd {
618 struct ata_port *ap;
619 struct ata_device *dev;
620
621 struct scsi_cmnd *scsicmd;
622 void (*scsidone)(struct scsi_cmnd *);
623
624 struct ata_taskfile tf;
625 u8 cdb[ATAPI_CDB_LEN];
626
627 unsigned long flags;
628 unsigned int tag;
629 unsigned int hw_tag;
630 unsigned int n_elem;
631 unsigned int orig_n_elem;
632
633 int dma_dir;
634
635 unsigned int sect_size;
636
637 unsigned int nbytes;
638 unsigned int extrabytes;
639 unsigned int curbytes;
640
641 struct scatterlist sgent;
642
643 struct scatterlist *sg;
644
645 struct scatterlist *cursg;
646 unsigned int cursg_ofs;
647
648 unsigned int err_mask;
649 struct ata_taskfile result_tf;
650 ata_qc_cb_t complete_fn;
651
652 void *private_data;
653 void *lldd_task;
654};
655
656struct ata_port_stats {
657 unsigned long unhandled_irq;
658 unsigned long idle_irq;
659 unsigned long rw_reqbuf;
660};
661
662struct ata_ering_entry {
663 unsigned int eflags;
664 unsigned int err_mask;
665 u64 timestamp;
666};
667
668struct ata_ering {
669 int cursor;
670 struct ata_ering_entry ring[ATA_ERING_SIZE];
671};
672
673struct ata_device {
674 struct ata_link *link;
675 unsigned int devno;
676 unsigned int horkage;
677 unsigned long flags;
678 struct scsi_device *sdev;
679 void *private_data;
680#ifdef CONFIG_ATA_ACPI
681 union acpi_object *gtf_cache;
682 unsigned int gtf_filter;
683#endif
684#ifdef CONFIG_SATA_ZPODD
685 void *zpodd;
686#endif
687 struct device tdev;
688
689 u64 n_sectors;
690 u64 n_native_sectors;
691 unsigned int class;
692 unsigned long unpark_deadline;
693
694 u8 pio_mode;
695 u8 dma_mode;
696 u8 xfer_mode;
697 unsigned int xfer_shift;
698
699 unsigned int multi_count;
700
701 unsigned int max_sectors;
702 unsigned int cdb_len;
703
704
705 unsigned long pio_mask;
706 unsigned long mwdma_mask;
707 unsigned long udma_mask;
708
709
710 u16 cylinders;
711 u16 heads;
712 u16 sectors;
713
714 union {
715 u16 id[ATA_ID_WORDS];
716 u32 gscr[SATA_PMP_GSCR_DWORDS];
717 } ____cacheline_aligned;
718
719
720 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
721
722
723 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
724 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
725
726
727 u32 zac_zoned_cap;
728 u32 zac_zones_optimal_open;
729 u32 zac_zones_optimal_nonseq;
730 u32 zac_zones_max_open;
731
732
733 int spdn_cnt;
734
735 struct ata_ering ering;
736};
737
738
739
740
741#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
742#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
743
744struct ata_eh_info {
745 struct ata_device *dev;
746 u32 serror;
747 unsigned int err_mask;
748 unsigned int action;
749 unsigned int dev_action[ATA_MAX_DEVICES];
750 unsigned int flags;
751
752 unsigned int probe_mask;
753
754 char desc[ATA_EH_DESC_LEN];
755 int desc_len;
756};
757
758struct ata_eh_context {
759 struct ata_eh_info i;
760 int tries[ATA_MAX_DEVICES];
761 int cmd_timeout_idx[ATA_MAX_DEVICES]
762 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
763 unsigned int classes[ATA_MAX_DEVICES];
764 unsigned int did_probe_mask;
765 unsigned int unloaded_mask;
766 unsigned int saved_ncq_enabled;
767 u8 saved_xfer_mode[ATA_MAX_DEVICES];
768
769 unsigned long last_reset;
770};
771
772struct ata_acpi_drive
773{
774 u32 pio;
775 u32 dma;
776} __packed;
777
778struct ata_acpi_gtm {
779 struct ata_acpi_drive drive[2];
780 u32 flags;
781} __packed;
782
783struct ata_link {
784 struct ata_port *ap;
785 int pmp;
786
787 struct device tdev;
788 unsigned int active_tag;
789 u32 sactive;
790
791 unsigned int flags;
792
793 u32 saved_scontrol;
794 unsigned int hw_sata_spd_limit;
795 unsigned int sata_spd_limit;
796 unsigned int sata_spd;
797 enum ata_lpm_policy lpm_policy;
798
799
800 struct ata_eh_info eh_info;
801
802 struct ata_eh_context eh_context;
803
804 struct ata_device device[ATA_MAX_DEVICES];
805
806 unsigned long last_lpm_change;
807};
808#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
809#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
810
811struct ata_port {
812 struct Scsi_Host *scsi_host;
813 struct ata_port_operations *ops;
814 spinlock_t *lock;
815
816
817 unsigned long flags;
818
819 unsigned int pflags;
820 unsigned int print_id;
821 unsigned int local_port_no;
822 unsigned int port_no;
823
824#ifdef CONFIG_ATA_SFF
825 struct ata_ioports ioaddr;
826 u8 ctl;
827 u8 last_ctl;
828 struct ata_link* sff_pio_task_link;
829 struct delayed_work sff_pio_task;
830#ifdef CONFIG_ATA_BMDMA
831 struct ata_bmdma_prd *bmdma_prd;
832 dma_addr_t bmdma_prd_dma;
833#endif
834#endif
835
836 unsigned int pio_mask;
837 unsigned int mwdma_mask;
838 unsigned int udma_mask;
839 unsigned int cbl;
840
841 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1];
842 unsigned long sas_tag_allocated;
843 u64 qc_active;
844 int nr_active_links;
845 unsigned int sas_last_tag;
846
847 struct ata_link link;
848 struct ata_link *slave_link;
849
850 int nr_pmp_links;
851 struct ata_link *pmp_link;
852 struct ata_link *excl_link;
853
854 struct ata_port_stats stats;
855 struct ata_host *host;
856 struct device *dev;
857 struct device tdev;
858
859 struct mutex scsi_scan_mutex;
860 struct delayed_work hotplug_task;
861 struct work_struct scsi_rescan_task;
862
863 unsigned int hsm_task_state;
864
865 u32 msg_enable;
866 struct list_head eh_done_q;
867 wait_queue_head_t eh_wait_q;
868 int eh_tries;
869 struct completion park_req_pending;
870
871 pm_message_t pm_mesg;
872 enum ata_lpm_policy target_lpm_policy;
873
874 struct timer_list fastdrain_timer;
875 unsigned long fastdrain_cnt;
876
877 async_cookie_t cookie;
878
879 int em_message_type;
880 void *private_data;
881
882#ifdef CONFIG_ATA_ACPI
883 struct ata_acpi_gtm __acpi_init_gtm;
884#endif
885
886 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
887};
888
889
890
891
892
893
894#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
895
896struct ata_port_operations {
897
898
899
900 int (*qc_defer)(struct ata_queued_cmd *qc);
901 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
902 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
903 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
904 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
905
906
907
908
909 int (*cable_detect)(struct ata_port *ap);
910 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
911 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
912 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
913 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
914 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
915
916 void (*dev_config)(struct ata_device *dev);
917
918 void (*freeze)(struct ata_port *ap);
919 void (*thaw)(struct ata_port *ap);
920 ata_prereset_fn_t prereset;
921 ata_reset_fn_t softreset;
922 ata_reset_fn_t hardreset;
923 ata_postreset_fn_t postreset;
924 ata_prereset_fn_t pmp_prereset;
925 ata_reset_fn_t pmp_softreset;
926 ata_reset_fn_t pmp_hardreset;
927 ata_postreset_fn_t pmp_postreset;
928 void (*error_handler)(struct ata_port *ap);
929 void (*lost_interrupt)(struct ata_port *ap);
930 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
931 void (*sched_eh)(struct ata_port *ap);
932 void (*end_eh)(struct ata_port *ap);
933
934
935
936
937 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
938 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
939 void (*pmp_attach)(struct ata_port *ap);
940 void (*pmp_detach)(struct ata_port *ap);
941 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
942 unsigned hints);
943
944
945
946
947 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
948 int (*port_resume)(struct ata_port *ap);
949 int (*port_start)(struct ata_port *ap);
950 void (*port_stop)(struct ata_port *ap);
951 void (*host_stop)(struct ata_host *host);
952
953#ifdef CONFIG_ATA_SFF
954
955
956
957 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
958 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
959 u8 (*sff_check_status)(struct ata_port *ap);
960 u8 (*sff_check_altstatus)(struct ata_port *ap);
961 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
962 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
963 void (*sff_exec_command)(struct ata_port *ap,
964 const struct ata_taskfile *tf);
965 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
966 unsigned char *buf, unsigned int buflen, int rw);
967 void (*sff_irq_on)(struct ata_port *);
968 bool (*sff_irq_check)(struct ata_port *);
969 void (*sff_irq_clear)(struct ata_port *);
970 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
971
972#ifdef CONFIG_ATA_BMDMA
973 void (*bmdma_setup)(struct ata_queued_cmd *qc);
974 void (*bmdma_start)(struct ata_queued_cmd *qc);
975 void (*bmdma_stop)(struct ata_queued_cmd *qc);
976 u8 (*bmdma_status)(struct ata_port *ap);
977#endif
978#endif
979
980 ssize_t (*em_show)(struct ata_port *ap, char *buf);
981 ssize_t (*em_store)(struct ata_port *ap, const char *message,
982 size_t size);
983 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
984 ssize_t (*sw_activity_store)(struct ata_device *dev,
985 enum sw_activity val);
986 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
987 ssize_t size);
988
989
990
991
992 void (*phy_reset)(struct ata_port *ap);
993 void (*eng_timeout)(struct ata_port *ap);
994
995
996
997
998
999 const struct ata_port_operations *inherits;
1000};
1001
1002struct ata_port_info {
1003 unsigned long flags;
1004 unsigned long link_flags;
1005 unsigned long pio_mask;
1006 unsigned long mwdma_mask;
1007 unsigned long udma_mask;
1008 struct ata_port_operations *port_ops;
1009 void *private_data;
1010};
1011
1012struct ata_timing {
1013 unsigned short mode;
1014 unsigned short setup;
1015 unsigned short act8b;
1016 unsigned short rec8b;
1017 unsigned short cyc8b;
1018 unsigned short active;
1019 unsigned short recover;
1020 unsigned short dmack_hold;
1021 unsigned short cycle;
1022 unsigned short udma;
1023};
1024
1025
1026
1027
1028extern struct ata_port_operations ata_dummy_port_ops;
1029extern const struct ata_port_info ata_dummy_port_info;
1030
1031static inline bool ata_is_atapi(u8 prot)
1032{
1033 return prot & ATA_PROT_FLAG_ATAPI;
1034}
1035
1036static inline bool ata_is_pio(u8 prot)
1037{
1038 return prot & ATA_PROT_FLAG_PIO;
1039}
1040
1041static inline bool ata_is_dma(u8 prot)
1042{
1043 return prot & ATA_PROT_FLAG_DMA;
1044}
1045
1046static inline bool ata_is_ncq(u8 prot)
1047{
1048 return prot & ATA_PROT_FLAG_NCQ;
1049}
1050
1051static inline bool ata_is_data(u8 prot)
1052{
1053 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1054}
1055
1056static inline int is_multi_taskfile(struct ata_taskfile *tf)
1057{
1058 return (tf->command == ATA_CMD_READ_MULTI) ||
1059 (tf->command == ATA_CMD_WRITE_MULTI) ||
1060 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1061 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1062 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1063}
1064
1065static inline int ata_port_is_dummy(struct ata_port *ap)
1066{
1067 return ap->ops == &ata_dummy_port_ops;
1068}
1069
1070extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1071extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1072 int (*check_ready)(struct ata_link *link));
1073extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1074 unsigned long deadline);
1075extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1076
1077extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1078extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1079 const struct ata_port_info * const * ppi, int n_ports);
1080extern void ata_host_get(struct ata_host *host);
1081extern void ata_host_put(struct ata_host *host);
1082extern int ata_host_start(struct ata_host *host);
1083extern int ata_host_register(struct ata_host *host,
1084 struct scsi_host_template *sht);
1085extern int ata_host_activate(struct ata_host *host, int irq,
1086 irq_handler_t irq_handler, unsigned long irq_flags,
1087 struct scsi_host_template *sht);
1088extern void ata_host_detach(struct ata_host *host);
1089extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1090extern int ata_scsi_detect(struct scsi_host_template *sht);
1091extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
1092 void __user *arg);
1093#ifdef CONFIG_COMPAT
1094#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
1095#else
1096#define ATA_SCSI_COMPAT_IOCTL
1097#endif
1098extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1099#if IS_REACHABLE(CONFIG_ATA)
1100bool ata_scsi_dma_need_drain(struct request *rq);
1101#else
1102#define ata_scsi_dma_need_drain NULL
1103#endif
1104extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1105 unsigned int cmd, void __user *arg);
1106extern bool ata_link_online(struct ata_link *link);
1107extern bool ata_link_offline(struct ata_link *link);
1108#ifdef CONFIG_PM
1109extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1110extern void ata_host_resume(struct ata_host *host);
1111extern void ata_sas_port_suspend(struct ata_port *ap);
1112extern void ata_sas_port_resume(struct ata_port *ap);
1113#else
1114static inline void ata_sas_port_suspend(struct ata_port *ap)
1115{
1116}
1117static inline void ata_sas_port_resume(struct ata_port *ap)
1118{
1119}
1120#endif
1121extern int ata_ratelimit(void);
1122extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1123extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1124 u32 val, unsigned long interval, unsigned long timeout);
1125extern int atapi_cmd_type(u8 opcode);
1126extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1127 unsigned long mwdma_mask, unsigned long udma_mask);
1128extern void ata_unpack_xfermask(unsigned long xfer_mask,
1129 unsigned long *pio_mask, unsigned long *mwdma_mask,
1130 unsigned long *udma_mask);
1131extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1132extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1133extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1134extern const char *ata_mode_string(unsigned long xfer_mask);
1135extern unsigned long ata_id_xfermask(const u16 *id);
1136extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1137extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
1138extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1139 unsigned int n_elem);
1140extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1141extern void ata_dev_disable(struct ata_device *adev);
1142extern void ata_id_string(const u16 *id, unsigned char *s,
1143 unsigned int ofs, unsigned int len);
1144extern void ata_id_c_string(const u16 *id, unsigned char *s,
1145 unsigned int ofs, unsigned int len);
1146extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1147 struct ata_taskfile *tf, u16 *id);
1148extern void ata_qc_complete(struct ata_queued_cmd *qc);
1149extern u64 ata_qc_get_active(struct ata_port *ap);
1150extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1151extern int ata_std_bios_param(struct scsi_device *sdev,
1152 struct block_device *bdev,
1153 sector_t capacity, int geom[]);
1154extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1155extern int ata_scsi_slave_config(struct scsi_device *sdev);
1156extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1157extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1158 int queue_depth);
1159extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1160 int queue_depth);
1161extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1162extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1163extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1164extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1165
1166
1167
1168
1169#ifdef CONFIG_SATA_HOST
1170extern const unsigned long sata_deb_timing_normal[];
1171extern const unsigned long sata_deb_timing_hotplug[];
1172extern const unsigned long sata_deb_timing_long[];
1173
1174static inline const unsigned long *
1175sata_ehc_deb_timing(struct ata_eh_context *ehc)
1176{
1177 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1178 return sata_deb_timing_hotplug;
1179 else
1180 return sata_deb_timing_normal;
1181}
1182
1183extern int sata_scr_valid(struct ata_link *link);
1184extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1185extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1186extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1187extern int sata_set_spd(struct ata_link *link);
1188extern int sata_link_hardreset(struct ata_link *link,
1189 const unsigned long *timing, unsigned long deadline,
1190 bool *online, int (*check_ready)(struct ata_link *));
1191extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1192 unsigned long deadline);
1193extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1194#else
1195static inline const unsigned long *
1196sata_ehc_deb_timing(struct ata_eh_context *ehc)
1197{
1198 return NULL;
1199}
1200static inline int sata_scr_valid(struct ata_link *link) { return 0; }
1201static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
1202{
1203 return -EOPNOTSUPP;
1204}
1205static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
1206{
1207 return -EOPNOTSUPP;
1208}
1209static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
1210{
1211 return -EOPNOTSUPP;
1212}
1213static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
1214static inline int sata_link_hardreset(struct ata_link *link,
1215 const unsigned long *timing,
1216 unsigned long deadline,
1217 bool *online,
1218 int (*check_ready)(struct ata_link *))
1219{
1220 if (online)
1221 *online = false;
1222 return -EOPNOTSUPP;
1223}
1224static inline int sata_link_resume(struct ata_link *link,
1225 const unsigned long *params,
1226 unsigned long deadline)
1227{
1228 return -EOPNOTSUPP;
1229}
1230static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
1231#endif
1232extern int sata_link_debounce(struct ata_link *link,
1233 const unsigned long *params, unsigned long deadline);
1234extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1235 bool spm_wakeup);
1236extern int ata_slave_link_init(struct ata_port *ap);
1237extern void ata_sas_port_destroy(struct ata_port *);
1238extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1239 struct ata_port_info *, struct Scsi_Host *);
1240extern void ata_sas_async_probe(struct ata_port *ap);
1241extern int ata_sas_sync_probe(struct ata_port *ap);
1242extern int ata_sas_port_init(struct ata_port *);
1243extern int ata_sas_port_start(struct ata_port *ap);
1244extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
1245extern void ata_sas_tport_delete(struct ata_port *ap);
1246extern void ata_sas_port_stop(struct ata_port *ap);
1247extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1248extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1249extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1250 u8 pmp, int is_cmd, u8 *fis);
1251extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1252extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
1253extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1254extern int sata_async_notification(struct ata_port *ap);
1255
1256extern int ata_cable_40wire(struct ata_port *ap);
1257extern int ata_cable_80wire(struct ata_port *ap);
1258extern int ata_cable_sata(struct ata_port *ap);
1259extern int ata_cable_ignore(struct ata_port *ap);
1260extern int ata_cable_unknown(struct ata_port *ap);
1261
1262
1263extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1264extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1265
1266
1267#ifdef CONFIG_PCI
1268struct pci_dev;
1269
1270struct pci_bits {
1271 unsigned int reg;
1272 unsigned int width;
1273 unsigned long mask;
1274 unsigned long val;
1275};
1276
1277extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1278extern void ata_pci_shutdown_one(struct pci_dev *pdev);
1279extern void ata_pci_remove_one(struct pci_dev *pdev);
1280
1281#ifdef CONFIG_PM
1282extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1283extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1284extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1285extern int ata_pci_device_resume(struct pci_dev *pdev);
1286#endif
1287#endif
1288
1289struct platform_device;
1290
1291extern int ata_platform_remove_one(struct platform_device *pdev);
1292
1293
1294
1295
1296#ifdef CONFIG_ATA_ACPI
1297static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1298{
1299 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1300 return &ap->__acpi_init_gtm;
1301 return NULL;
1302}
1303int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1304int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1305unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1306 const struct ata_acpi_gtm *gtm);
1307int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1308#else
1309static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1310{
1311 return NULL;
1312}
1313
1314static inline int ata_acpi_stm(const struct ata_port *ap,
1315 struct ata_acpi_gtm *stm)
1316{
1317 return -ENOSYS;
1318}
1319
1320static inline int ata_acpi_gtm(const struct ata_port *ap,
1321 struct ata_acpi_gtm *stm)
1322{
1323 return -ENOSYS;
1324}
1325
1326static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1327 const struct ata_acpi_gtm *gtm)
1328{
1329 return 0;
1330}
1331
1332static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1333 const struct ata_acpi_gtm *gtm)
1334{
1335 return 0;
1336}
1337#endif
1338
1339
1340
1341
1342extern void ata_port_schedule_eh(struct ata_port *ap);
1343extern void ata_port_wait_eh(struct ata_port *ap);
1344extern int ata_link_abort(struct ata_link *link);
1345extern int ata_port_abort(struct ata_port *ap);
1346extern int ata_port_freeze(struct ata_port *ap);
1347
1348extern void ata_eh_freeze_port(struct ata_port *ap);
1349extern void ata_eh_thaw_port(struct ata_port *ap);
1350
1351extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1352extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1353
1354extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1355 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1356 ata_postreset_fn_t postreset);
1357extern void ata_std_error_handler(struct ata_port *ap);
1358extern void ata_std_sched_eh(struct ata_port *ap);
1359extern void ata_std_end_eh(struct ata_port *ap);
1360extern int ata_link_nr_enabled(struct ata_link *link);
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383extern const struct ata_port_operations ata_base_port_ops;
1384extern const struct ata_port_operations sata_port_ops;
1385extern struct device_attribute *ata_common_sdev_attrs[];
1386
1387
1388
1389
1390
1391
1392
1393#define __ATA_BASE_SHT(drv_name) \
1394 .module = THIS_MODULE, \
1395 .name = drv_name, \
1396 .ioctl = ata_scsi_ioctl, \
1397 ATA_SCSI_COMPAT_IOCTL \
1398 .queuecommand = ata_scsi_queuecmd, \
1399 .dma_need_drain = ata_scsi_dma_need_drain, \
1400 .can_queue = ATA_DEF_QUEUE, \
1401 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1402 .this_id = ATA_SHT_THIS_ID, \
1403 .emulated = ATA_SHT_EMULATED, \
1404 .proc_name = drv_name, \
1405 .slave_configure = ata_scsi_slave_config, \
1406 .slave_destroy = ata_scsi_slave_destroy, \
1407 .bios_param = ata_std_bios_param, \
1408 .unlock_native_capacity = ata_scsi_unlock_native_capacity
1409
1410#define ATA_BASE_SHT(drv_name) \
1411 __ATA_BASE_SHT(drv_name), \
1412 .sdev_attrs = ata_common_sdev_attrs
1413
1414#ifdef CONFIG_SATA_HOST
1415extern struct device_attribute *ata_ncq_sdev_attrs[];
1416
1417#define ATA_NCQ_SHT(drv_name) \
1418 __ATA_BASE_SHT(drv_name), \
1419 .sdev_attrs = ata_ncq_sdev_attrs, \
1420 .change_queue_depth = ata_scsi_change_queue_depth
1421#endif
1422
1423
1424
1425
1426#ifdef CONFIG_SATA_PMP
1427static inline bool sata_pmp_supported(struct ata_port *ap)
1428{
1429 return ap->flags & ATA_FLAG_PMP;
1430}
1431
1432static inline bool sata_pmp_attached(struct ata_port *ap)
1433{
1434 return ap->nr_pmp_links != 0;
1435}
1436
1437static inline bool ata_is_host_link(const struct ata_link *link)
1438{
1439 return link == &link->ap->link || link == link->ap->slave_link;
1440}
1441#else
1442static inline bool sata_pmp_supported(struct ata_port *ap)
1443{
1444 return false;
1445}
1446
1447static inline bool sata_pmp_attached(struct ata_port *ap)
1448{
1449 return false;
1450}
1451
1452static inline bool ata_is_host_link(const struct ata_link *link)
1453{
1454 return 1;
1455}
1456#endif
1457
1458static inline int sata_srst_pmp(struct ata_link *link)
1459{
1460 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1461 return SATA_PMP_CTRL_PORT;
1462 return link->pmp;
1463}
1464
1465
1466
1467
1468__printf(3, 4)
1469void ata_port_printk(const struct ata_port *ap, const char *level,
1470 const char *fmt, ...);
1471__printf(3, 4)
1472void ata_link_printk(const struct ata_link *link, const char *level,
1473 const char *fmt, ...);
1474__printf(3, 4)
1475void ata_dev_printk(const struct ata_device *dev, const char *level,
1476 const char *fmt, ...);
1477
1478#define ata_port_err(ap, fmt, ...) \
1479 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1480#define ata_port_warn(ap, fmt, ...) \
1481 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1482#define ata_port_notice(ap, fmt, ...) \
1483 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1484#define ata_port_info(ap, fmt, ...) \
1485 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1486#define ata_port_dbg(ap, fmt, ...) \
1487 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1488
1489#define ata_link_err(link, fmt, ...) \
1490 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1491#define ata_link_warn(link, fmt, ...) \
1492 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1493#define ata_link_notice(link, fmt, ...) \
1494 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1495#define ata_link_info(link, fmt, ...) \
1496 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1497#define ata_link_dbg(link, fmt, ...) \
1498 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1499
1500#define ata_dev_err(dev, fmt, ...) \
1501 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1502#define ata_dev_warn(dev, fmt, ...) \
1503 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1504#define ata_dev_notice(dev, fmt, ...) \
1505 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1506#define ata_dev_info(dev, fmt, ...) \
1507 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1508#define ata_dev_dbg(dev, fmt, ...) \
1509 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1510
1511void ata_print_version(const struct device *dev, const char *version);
1512
1513
1514
1515
1516extern __printf(2, 3)
1517void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1518extern __printf(2, 3)
1519void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1520extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1521
1522static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1523{
1524 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1525 ehi->flags |= ATA_EHI_HOTPLUGGED;
1526 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1527 ehi->err_mask |= AC_ERR_ATA_BUS;
1528}
1529
1530
1531
1532
1533extern __printf(2, 3)
1534void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1535#ifdef CONFIG_PCI
1536extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1537 const char *name);
1538#endif
1539
1540static inline bool ata_tag_internal(unsigned int tag)
1541{
1542 return tag == ATA_TAG_INTERNAL;
1543}
1544
1545static inline bool ata_tag_valid(unsigned int tag)
1546{
1547 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
1548}
1549
1550#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1551 for ((tag) = 0; (tag) < (max_tag) && \
1552 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1553
1554
1555
1556
1557
1558#define ata_qc_for_each_raw(ap, qc, tag) \
1559 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1560
1561
1562
1563
1564#define ata_qc_for_each(ap, qc, tag) \
1565 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1566
1567
1568
1569
1570#define ata_qc_for_each_with_internal(ap, qc, tag) \
1571 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1572
1573
1574
1575
1576static inline unsigned int ata_class_enabled(unsigned int class)
1577{
1578 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1579 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1580 class == ATA_DEV_ZAC;
1581}
1582
1583static inline unsigned int ata_class_disabled(unsigned int class)
1584{
1585 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1586 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1587 class == ATA_DEV_ZAC_UNSUP;
1588}
1589
1590static inline unsigned int ata_class_absent(unsigned int class)
1591{
1592 return !ata_class_enabled(class) && !ata_class_disabled(class);
1593}
1594
1595static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1596{
1597 return ata_class_enabled(dev->class);
1598}
1599
1600static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1601{
1602 return ata_class_disabled(dev->class);
1603}
1604
1605static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1606{
1607 return ata_class_absent(dev->class);
1608}
1609
1610
1611
1612
1613static inline int ata_link_max_devices(const struct ata_link *link)
1614{
1615 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1616 return 2;
1617 return 1;
1618}
1619
1620static inline int ata_link_active(struct ata_link *link)
1621{
1622 return ata_tag_valid(link->active_tag) || link->sactive;
1623}
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637enum ata_link_iter_mode {
1638 ATA_LITER_EDGE,
1639
1640 ATA_LITER_HOST_FIRST,
1641 ATA_LITER_PMP_FIRST,
1642
1643};
1644
1645enum ata_dev_iter_mode {
1646 ATA_DITER_ENABLED,
1647 ATA_DITER_ENABLED_REVERSE,
1648 ATA_DITER_ALL,
1649 ATA_DITER_ALL_REVERSE,
1650};
1651
1652extern struct ata_link *ata_link_next(struct ata_link *link,
1653 struct ata_port *ap,
1654 enum ata_link_iter_mode mode);
1655
1656extern struct ata_device *ata_dev_next(struct ata_device *dev,
1657 struct ata_link *link,
1658 enum ata_dev_iter_mode mode);
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674#define ata_for_each_link(link, ap, mode) \
1675 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1676 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1677
1678#define ata_for_each_dev(dev, link, mode) \
1679 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1680 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692static inline int ata_ncq_enabled(struct ata_device *dev)
1693{
1694 if (!IS_ENABLED(CONFIG_SATA_HOST))
1695 return 0;
1696 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1697 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1698}
1699
1700static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1701{
1702 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1703 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1704 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1705}
1706
1707static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1708{
1709 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1710 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1711 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1712}
1713
1714static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1715{
1716 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1717 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1718 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1719}
1720
1721static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1722{
1723 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1724 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1725}
1726
1727static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1728{
1729 qc->tf.ctl |= ATA_NIEN;
1730}
1731
1732static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1733 unsigned int tag)
1734{
1735 if (ata_tag_valid(tag))
1736 return &ap->qcmd[tag];
1737 return NULL;
1738}
1739
1740static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1741 unsigned int tag)
1742{
1743 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1744
1745 if (unlikely(!qc) || !ap->ops->error_handler)
1746 return qc;
1747
1748 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1749 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1750 return qc;
1751
1752 return NULL;
1753}
1754
1755static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1756{
1757 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1758}
1759
1760static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1761{
1762 memset(tf, 0, sizeof(*tf));
1763
1764#ifdef CONFIG_ATA_SFF
1765 tf->ctl = dev->link->ap->ctl;
1766#else
1767 tf->ctl = ATA_DEVCTL_OBS;
1768#endif
1769 if (dev->devno == 0)
1770 tf->device = ATA_DEVICE_OBS;
1771 else
1772 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1773}
1774
1775static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1776{
1777 qc->dma_dir = DMA_NONE;
1778 qc->sg = NULL;
1779 qc->flags = 0;
1780 qc->cursg = NULL;
1781 qc->cursg_ofs = 0;
1782 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1783 qc->n_elem = 0;
1784 qc->err_mask = 0;
1785 qc->sect_size = ATA_SECT_SIZE;
1786
1787 ata_tf_init(qc->dev, &qc->tf);
1788
1789
1790 qc->result_tf.command = ATA_DRDY;
1791 qc->result_tf.feature = 0;
1792}
1793
1794static inline int ata_try_flush_cache(const struct ata_device *dev)
1795{
1796 return ata_id_wcache_enabled(dev->id) ||
1797 ata_id_has_flush(dev->id) ||
1798 ata_id_has_flush_ext(dev->id);
1799}
1800
1801static inline unsigned int ac_err_mask(u8 status)
1802{
1803 if (status & (ATA_BUSY | ATA_DRQ))
1804 return AC_ERR_HSM;
1805 if (status & (ATA_ERR | ATA_DF))
1806 return AC_ERR_DEV;
1807 return 0;
1808}
1809
1810static inline unsigned int __ac_err_mask(u8 status)
1811{
1812 unsigned int mask = ac_err_mask(status);
1813 if (mask == 0)
1814 return AC_ERR_OTHER;
1815 return mask;
1816}
1817
1818static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1819{
1820 return *(struct ata_port **)&host->hostdata[0];
1821}
1822
1823static inline int ata_check_ready(u8 status)
1824{
1825 if (!(status & ATA_BUSY))
1826 return 1;
1827
1828
1829 if (status == 0xff)
1830 return -ENODEV;
1831
1832 return 0;
1833}
1834
1835static inline unsigned long ata_deadline(unsigned long from_jiffies,
1836 unsigned long timeout_msecs)
1837{
1838 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1839}
1840
1841
1842
1843
1844
1845static inline int ata_using_mwdma(struct ata_device *adev)
1846{
1847 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1848 return 1;
1849 return 0;
1850}
1851
1852static inline int ata_using_udma(struct ata_device *adev)
1853{
1854 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1855 return 1;
1856 return 0;
1857}
1858
1859static inline int ata_dma_enabled(struct ata_device *adev)
1860{
1861 return (adev->dma_mode == 0xFF ? 0 : 1);
1862}
1863
1864
1865
1866
1867extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1868extern int ata_timing_compute(struct ata_device *, unsigned short,
1869 struct ata_timing *, int, int);
1870extern void ata_timing_merge(const struct ata_timing *,
1871 const struct ata_timing *, struct ata_timing *,
1872 unsigned int);
1873
1874
1875
1876
1877#ifdef CONFIG_SATA_PMP
1878
1879extern const struct ata_port_operations sata_pmp_port_ops;
1880
1881extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1882extern void sata_pmp_error_handler(struct ata_port *ap);
1883
1884#else
1885
1886#define sata_pmp_port_ops sata_port_ops
1887#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1888#define sata_pmp_error_handler ata_std_error_handler
1889
1890#endif
1891
1892
1893
1894
1895
1896#ifdef CONFIG_ATA_SFF
1897
1898extern const struct ata_port_operations ata_sff_port_ops;
1899extern const struct ata_port_operations ata_bmdma32_port_ops;
1900
1901
1902#define ATA_PIO_SHT(drv_name) \
1903 ATA_BASE_SHT(drv_name), \
1904 .sg_tablesize = LIBATA_MAX_PRD, \
1905 .dma_boundary = ATA_DMA_BOUNDARY
1906
1907extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1908extern u8 ata_sff_check_status(struct ata_port *ap);
1909extern void ata_sff_pause(struct ata_port *ap);
1910extern void ata_sff_dma_pause(struct ata_port *ap);
1911extern int ata_sff_busy_sleep(struct ata_port *ap,
1912 unsigned long timeout_pat, unsigned long timeout);
1913extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1914extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1915extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1916extern void ata_sff_exec_command(struct ata_port *ap,
1917 const struct ata_taskfile *tf);
1918extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
1919 unsigned char *buf, unsigned int buflen, int rw);
1920extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
1921 unsigned char *buf, unsigned int buflen, int rw);
1922extern void ata_sff_irq_on(struct ata_port *ap);
1923extern void ata_sff_irq_clear(struct ata_port *ap);
1924extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1925 u8 status, int in_wq);
1926extern void ata_sff_queue_work(struct work_struct *work);
1927extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1928 unsigned long delay);
1929extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1930extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1931extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1932extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1933 struct ata_queued_cmd *qc);
1934extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1935extern void ata_sff_lost_interrupt(struct ata_port *ap);
1936extern void ata_sff_freeze(struct ata_port *ap);
1937extern void ata_sff_thaw(struct ata_port *ap);
1938extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1939extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1940 u8 *r_err);
1941extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1942 unsigned long deadline);
1943extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1944 unsigned long deadline);
1945extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1946 unsigned long deadline);
1947extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1948extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1949extern void ata_sff_error_handler(struct ata_port *ap);
1950extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1951#ifdef CONFIG_PCI
1952extern int ata_pci_sff_init_host(struct ata_host *host);
1953extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1954 const struct ata_port_info * const * ppi,
1955 struct ata_host **r_host);
1956extern int ata_pci_sff_activate_host(struct ata_host *host,
1957 irq_handler_t irq_handler,
1958 struct scsi_host_template *sht);
1959extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1960 const struct ata_port_info * const * ppi,
1961 struct scsi_host_template *sht, void *host_priv, int hflags);
1962#endif
1963
1964#ifdef CONFIG_ATA_BMDMA
1965
1966extern const struct ata_port_operations ata_bmdma_port_ops;
1967
1968#define ATA_BMDMA_SHT(drv_name) \
1969 ATA_BASE_SHT(drv_name), \
1970 .sg_tablesize = LIBATA_MAX_PRD, \
1971 .dma_boundary = ATA_DMA_BOUNDARY
1972
1973extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1974extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1975extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1976extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1977 struct ata_queued_cmd *qc);
1978extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1979extern void ata_bmdma_error_handler(struct ata_port *ap);
1980extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1981extern void ata_bmdma_irq_clear(struct ata_port *ap);
1982extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1983extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1984extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1985extern u8 ata_bmdma_status(struct ata_port *ap);
1986extern int ata_bmdma_port_start(struct ata_port *ap);
1987extern int ata_bmdma_port_start32(struct ata_port *ap);
1988
1989#ifdef CONFIG_PCI
1990extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1991extern void ata_pci_bmdma_init(struct ata_host *host);
1992extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1993 const struct ata_port_info * const * ppi,
1994 struct ata_host **r_host);
1995extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1996 const struct ata_port_info * const * ppi,
1997 struct scsi_host_template *sht,
1998 void *host_priv, int hflags);
1999#endif
2000#endif
2001
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2014
2015static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
2016 unsigned int max)
2017{
2018 u8 status;
2019
2020 do {
2021 udelay(10);
2022 status = ap->ops->sff_check_status(ap);
2023 max--;
2024 } while (status != 0xff && (status & bits) && (max > 0));
2025
2026 return status;
2027}
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2038
2039static inline u8 ata_wait_idle(struct ata_port *ap)
2040{
2041 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
2042
2043#ifdef ATA_DEBUG
2044 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
2045 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
2046 status);
2047#endif
2048
2049 return status;
2050}
2051#endif
2052
2053#endif
2054