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26#ifndef __LINUX_LIBATA_H__
27#define __LINUX_LIBATA_H__
28
29#include <linux/delay.h>
30#include <linux/jiffies.h>
31#include <linux/interrupt.h>
32#include <linux/dma-mapping.h>
33#include <linux/scatterlist.h>
34#include <linux/io.h>
35#include <linux/ata.h>
36#include <linux/workqueue.h>
37#include <scsi/scsi_host.h>
38#include <linux/acpi.h>
39#include <linux/cdrom.h>
40#include <linux/sched.h>
41
42
43
44
45
46#ifdef CONFIG_ATA_NONSTANDARD
47#include <asm/libata-portmap.h>
48#else
49#include <asm-generic/libata-portmap.h>
50#endif
51
52
53
54
55
56#undef ATA_DEBUG
57#undef ATA_VERBOSE_DEBUG
58#undef ATA_IRQ_TRAP
59#undef ATA_NDEBUG
60
61
62
63#ifdef ATA_DEBUG
64#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
65#ifdef ATA_VERBOSE_DEBUG
66#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
67#else
68#define VPRINTK(fmt, args...)
69#endif
70#else
71#define DPRINTK(fmt, args...)
72#define VPRINTK(fmt, args...)
73#endif
74
75#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
76
77
78#define HAVE_LIBATA_MSG 1
79
80enum {
81 ATA_MSG_DRV = 0x0001,
82 ATA_MSG_INFO = 0x0002,
83 ATA_MSG_PROBE = 0x0004,
84 ATA_MSG_WARN = 0x0008,
85 ATA_MSG_MALLOC = 0x0010,
86 ATA_MSG_CTL = 0x0020,
87 ATA_MSG_INTR = 0x0040,
88 ATA_MSG_ERR = 0x0080,
89};
90
91#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
92#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
93#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
94#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
95#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
96#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
97#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
98#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
99
100static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
101{
102 if (dval < 0 || dval >= (sizeof(u32) * 8))
103 return default_msg_enable_bits;
104 if (!dval)
105 return 0;
106 return (1 << dval) - 1;
107}
108
109
110#define ATA_TAG_POISON 0xfafbfcfdU
111
112enum {
113
114 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
115 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4,
116 ATA_DEF_QUEUE = 1,
117
118 ATA_MAX_QUEUE = 32,
119 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
120 ATA_SHORT_PAUSE = 16,
121
122 ATAPI_MAX_DRAIN = 16 << 10,
123
124 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
125
126 ATA_SHT_EMULATED = 1,
127 ATA_SHT_CMD_PER_LUN = 1,
128 ATA_SHT_THIS_ID = -1,
129 ATA_SHT_USE_CLUSTERING = 1,
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_HIPM = (1 << 8),
141 ATA_DFLAG_DIPM = (1 << 9),
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_INIT_MASK = (1 << 24) - 1,
152
153 ATA_DFLAG_DETACH = (1 << 24),
154 ATA_DFLAG_DETACHED = (1 << 25),
155
156 ATA_DEV_UNKNOWN = 0,
157 ATA_DEV_ATA = 1,
158 ATA_DEV_ATA_UNSUP = 2,
159 ATA_DEV_ATAPI = 3,
160 ATA_DEV_ATAPI_UNSUP = 4,
161 ATA_DEV_PMP = 5,
162 ATA_DEV_PMP_UNSUP = 6,
163 ATA_DEV_SEMB = 7,
164 ATA_DEV_SEMB_UNSUP = 8,
165 ATA_DEV_NONE = 9,
166
167
168 ATA_LFLAG_NO_HRST = (1 << 1),
169 ATA_LFLAG_NO_SRST = (1 << 2),
170 ATA_LFLAG_ASSUME_ATA = (1 << 3),
171 ATA_LFLAG_ASSUME_SEMB = (1 << 4),
172 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
173 ATA_LFLAG_NO_RETRY = (1 << 5),
174 ATA_LFLAG_DISABLED = (1 << 6),
175 ATA_LFLAG_SW_ACTIVITY = (1 << 7),
176 ATA_LFLAG_NO_LPM = (1 << 8),
177
178
179 ATA_FLAG_SLAVE_POSS = (1 << 0),
180
181 ATA_FLAG_SATA = (1 << 1),
182 ATA_FLAG_NO_LEGACY = (1 << 2),
183 ATA_FLAG_MMIO = (1 << 3),
184 ATA_FLAG_SRST = (1 << 4),
185 ATA_FLAG_SATA_RESET = (1 << 5),
186 ATA_FLAG_NO_ATAPI = (1 << 6),
187 ATA_FLAG_PIO_DMA = (1 << 7),
188 ATA_FLAG_PIO_LBA48 = (1 << 8),
189 ATA_FLAG_PIO_POLLING = (1 << 9),
190
191 ATA_FLAG_NCQ = (1 << 10),
192 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11),
193 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12),
194 ATA_FLAG_DEBUGMSG = (1 << 13),
195 ATA_FLAG_FPDMA_AA = (1 << 14),
196 ATA_FLAG_IGN_SIMPLEX = (1 << 15),
197 ATA_FLAG_NO_IORDY = (1 << 16),
198 ATA_FLAG_ACPI_SATA = (1 << 17),
199 ATA_FLAG_AN = (1 << 18),
200 ATA_FLAG_PMP = (1 << 19),
201 ATA_FLAG_LPM = (1 << 20),
202 ATA_FLAG_EM = (1 << 21),
203
204 ATA_FLAG_SW_ACTIVITY = (1 << 22),
205
206
207
208
209
210
211 ATA_PFLAG_EH_PENDING = (1 << 0),
212 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1),
213 ATA_PFLAG_FROZEN = (1 << 2),
214 ATA_PFLAG_RECOVERED = (1 << 3),
215 ATA_PFLAG_LOADING = (1 << 4),
216 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6),
217 ATA_PFLAG_INITIALIZING = (1 << 7),
218 ATA_PFLAG_RESETTING = (1 << 8),
219 ATA_PFLAG_UNLOADING = (1 << 9),
220 ATA_PFLAG_UNLOADED = (1 << 10),
221
222 ATA_PFLAG_SUSPENDED = (1 << 17),
223 ATA_PFLAG_PM_PENDING = (1 << 18),
224 ATA_PFLAG_INIT_GTM_VALID = (1 << 19),
225
226 ATA_PFLAG_PIO32 = (1 << 20),
227 ATA_PFLAG_PIO32CHANGE = (1 << 21),
228
229
230 ATA_QCFLAG_ACTIVE = (1 << 0),
231 ATA_QCFLAG_DMAMAP = (1 << 1),
232 ATA_QCFLAG_IO = (1 << 3),
233 ATA_QCFLAG_RESULT_TF = (1 << 4),
234 ATA_QCFLAG_CLEAR_EXCL = (1 << 5),
235 ATA_QCFLAG_QUIET = (1 << 6),
236 ATA_QCFLAG_RETRY = (1 << 7),
237
238 ATA_QCFLAG_FAILED = (1 << 16),
239 ATA_QCFLAG_SENSE_VALID = (1 << 17),
240 ATA_QCFLAG_EH_SCHEDULED = (1 << 18),
241
242
243 ATA_HOST_SIMPLEX = (1 << 0),
244 ATA_HOST_STARTED = (1 << 1),
245 ATA_HOST_PARALLEL_SCAN = (1 << 2),
246
247
248
249
250 ATA_TMOUT_BOOT = 30000,
251 ATA_TMOUT_BOOT_QUICK = 7000,
252 ATA_TMOUT_INTERNAL_QUICK = 5000,
253 ATA_TMOUT_MAX_PARK = 30000,
254
255
256
257
258
259
260 ATA_TMOUT_FF_WAIT_LONG = 2000,
261 ATA_TMOUT_FF_WAIT = 800,
262
263
264
265
266
267
268
269
270
271
272
273 ATA_WAIT_AFTER_RESET = 150,
274
275
276
277
278
279
280 ATA_TMOUT_PMP_SRST_WAIT = 5000,
281
282
283 BUS_UNKNOWN = 0,
284 BUS_DMA = 1,
285 BUS_IDLE = 2,
286 BUS_NOINTR = 3,
287 BUS_NODATA = 4,
288 BUS_TIMER = 5,
289 BUS_PIO = 6,
290 BUS_EDD = 7,
291 BUS_IDENTIFY = 8,
292 BUS_PACKET = 9,
293
294
295 PORT_UNKNOWN = 0,
296 PORT_ENABLED = 1,
297 PORT_DISABLED = 2,
298
299
300
301
302 ATA_NR_PIO_MODES = 7,
303 ATA_NR_MWDMA_MODES = 5,
304 ATA_NR_UDMA_MODES = 8,
305
306 ATA_SHIFT_PIO = 0,
307 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
308 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
309
310
311 ATA_DMA_PAD_SZ = 4,
312
313
314 ATA_ERING_SIZE = 32,
315
316
317 ATA_DEFER_LINK = 1,
318 ATA_DEFER_PORT = 2,
319
320
321 ATA_EH_DESC_LEN = 80,
322
323
324 ATA_EH_REVALIDATE = (1 << 0),
325 ATA_EH_SOFTRESET = (1 << 1),
326 ATA_EH_HARDRESET = (1 << 2),
327 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
328 ATA_EH_ENABLE_LINK = (1 << 3),
329 ATA_EH_PARK = (1 << 5),
330
331 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
332 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
333 ATA_EH_ENABLE_LINK,
334
335
336 ATA_EHI_HOTPLUGGED = (1 << 0),
337 ATA_EHI_NO_AUTOPSY = (1 << 2),
338 ATA_EHI_QUIET = (1 << 3),
339 ATA_EHI_NO_RECOVERY = (1 << 4),
340
341 ATA_EHI_DID_SOFTRESET = (1 << 16),
342 ATA_EHI_DID_HARDRESET = (1 << 17),
343 ATA_EHI_PRINTINFO = (1 << 18),
344 ATA_EHI_SETMODE = (1 << 19),
345 ATA_EHI_POST_SETMODE = (1 << 20),
346
347 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
348
349
350 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
351
352
353 ATA_EH_MAX_TRIES = 5,
354
355
356 ATA_LINK_RESUME_TRIES = 5,
357
358
359 ATA_PROBE_MAX_TRIES = 3,
360 ATA_EH_DEV_TRIES = 3,
361 ATA_EH_PMP_TRIES = 5,
362 ATA_EH_PMP_LINK_TRIES = 3,
363
364 SATA_PMP_RW_TIMEOUT = 3000,
365
366
367
368
369 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
370
371
372
373
374 ATA_HORKAGE_DIAGNOSTIC = (1 << 0),
375 ATA_HORKAGE_NODMA = (1 << 1),
376 ATA_HORKAGE_NONCQ = (1 << 2),
377 ATA_HORKAGE_MAX_SEC_128 = (1 << 3),
378 ATA_HORKAGE_BROKEN_HPA = (1 << 4),
379 ATA_HORKAGE_DISABLE = (1 << 5),
380 ATA_HORKAGE_HPA_SIZE = (1 << 6),
381 ATA_HORKAGE_IVB = (1 << 8),
382 ATA_HORKAGE_STUCK_ERR = (1 << 9),
383 ATA_HORKAGE_BRIDGE_OK = (1 << 10),
384 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11),
385
386 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),
387 ATA_HORKAGE_1_5_GBPS = (1 << 13),
388 ATA_HORKAGE_NOSETXFER = (1 << 14),
389 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15),
390 ATA_HORKAGE_DUMP_ID = (1 << 16),
391
392
393
394 ATA_DMA_MASK_ATA = (1 << 0),
395 ATA_DMA_MASK_ATAPI = (1 << 1),
396 ATA_DMA_MASK_CFA = (1 << 2),
397
398
399 ATAPI_READ = 0,
400 ATAPI_WRITE = 1,
401 ATAPI_READ_CD = 2,
402 ATAPI_PASS_THRU = 3,
403 ATAPI_MISC = 4,
404
405
406 ATA_TIMING_SETUP = (1 << 0),
407 ATA_TIMING_ACT8B = (1 << 1),
408 ATA_TIMING_REC8B = (1 << 2),
409 ATA_TIMING_CYC8B = (1 << 3),
410 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
411 ATA_TIMING_CYC8B,
412 ATA_TIMING_ACTIVE = (1 << 4),
413 ATA_TIMING_RECOVER = (1 << 5),
414 ATA_TIMING_DMACK_HOLD = (1 << 6),
415 ATA_TIMING_CYCLE = (1 << 7),
416 ATA_TIMING_UDMA = (1 << 8),
417 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
418 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
419 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
420 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
421 ATA_TIMING_UDMA,
422
423
424 ATA_ACPI_FILTER_SETXFER = 1 << 0,
425 ATA_ACPI_FILTER_LOCK = 1 << 1,
426 ATA_ACPI_FILTER_DIPM = 1 << 2,
427 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,
428 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,
429
430 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
431 ATA_ACPI_FILTER_LOCK |
432 ATA_ACPI_FILTER_DIPM,
433};
434
435enum ata_xfer_mask {
436 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
437 << ATA_SHIFT_PIO,
438 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
439 << ATA_SHIFT_MWDMA,
440 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
441 << ATA_SHIFT_UDMA,
442};
443
444enum hsm_task_states {
445 HSM_ST_IDLE,
446 HSM_ST_FIRST,
447
448 HSM_ST,
449 HSM_ST_LAST,
450 HSM_ST_ERR,
451};
452
453enum ata_completion_errors {
454 AC_ERR_DEV = (1 << 0),
455 AC_ERR_HSM = (1 << 1),
456 AC_ERR_TIMEOUT = (1 << 2),
457 AC_ERR_MEDIA = (1 << 3),
458 AC_ERR_ATA_BUS = (1 << 4),
459 AC_ERR_HOST_BUS = (1 << 5),
460 AC_ERR_SYSTEM = (1 << 6),
461 AC_ERR_INVALID = (1 << 7),
462 AC_ERR_OTHER = (1 << 8),
463 AC_ERR_NODEV_HINT = (1 << 9),
464 AC_ERR_NCQ = (1 << 10),
465};
466
467
468
469
470
471enum ata_lpm_policy {
472 ATA_LPM_UNKNOWN,
473 ATA_LPM_MAX_POWER,
474 ATA_LPM_MED_POWER,
475 ATA_LPM_MIN_POWER,
476};
477
478enum ata_lpm_hints {
479 ATA_LPM_EMPTY = (1 << 0),
480 ATA_LPM_HIPM = (1 << 1),
481};
482
483
484struct scsi_device;
485struct ata_port_operations;
486struct ata_port;
487struct ata_link;
488struct ata_queued_cmd;
489
490
491typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
492typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
493typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
494 unsigned long deadline);
495typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
496
497extern struct device_attribute dev_attr_link_power_management_policy;
498extern struct device_attribute dev_attr_unload_heads;
499extern struct device_attribute dev_attr_em_message_type;
500extern struct device_attribute dev_attr_em_message;
501extern struct device_attribute dev_attr_sw_activity;
502
503enum sw_activity {
504 OFF,
505 BLINK_ON,
506 BLINK_OFF,
507};
508
509#ifdef CONFIG_ATA_SFF
510struct ata_ioports {
511 void __iomem *cmd_addr;
512 void __iomem *data_addr;
513 void __iomem *error_addr;
514 void __iomem *feature_addr;
515 void __iomem *nsect_addr;
516 void __iomem *lbal_addr;
517 void __iomem *lbam_addr;
518 void __iomem *lbah_addr;
519 void __iomem *device_addr;
520 void __iomem *status_addr;
521 void __iomem *command_addr;
522 void __iomem *altstatus_addr;
523 void __iomem *ctl_addr;
524#ifdef CONFIG_ATA_BMDMA
525 void __iomem *bmdma_addr;
526#endif
527 void __iomem *scr_addr;
528};
529#endif
530
531struct ata_host {
532 spinlock_t lock;
533 struct device *dev;
534 void __iomem * const *iomap;
535 unsigned int n_ports;
536 void *private_data;
537 struct ata_port_operations *ops;
538 unsigned long flags;
539
540 struct mutex eh_mutex;
541 struct task_struct *eh_owner;
542
543#ifdef CONFIG_ATA_ACPI
544 acpi_handle acpi_handle;
545#endif
546 struct ata_port *simplex_claimed;
547 struct ata_port *ports[0];
548};
549
550struct ata_queued_cmd {
551 struct ata_port *ap;
552 struct ata_device *dev;
553
554 struct scsi_cmnd *scsicmd;
555 void (*scsidone)(struct scsi_cmnd *);
556
557 struct ata_taskfile tf;
558 u8 cdb[ATAPI_CDB_LEN];
559
560 unsigned long flags;
561 unsigned int tag;
562 unsigned int n_elem;
563 unsigned int orig_n_elem;
564
565 int dma_dir;
566
567 unsigned int sect_size;
568
569 unsigned int nbytes;
570 unsigned int extrabytes;
571 unsigned int curbytes;
572
573 struct scatterlist sgent;
574
575 struct scatterlist *sg;
576
577 struct scatterlist *cursg;
578 unsigned int cursg_ofs;
579
580 unsigned int err_mask;
581 struct ata_taskfile result_tf;
582 ata_qc_cb_t complete_fn;
583
584 void *private_data;
585 void *lldd_task;
586};
587
588struct ata_port_stats {
589 unsigned long unhandled_irq;
590 unsigned long idle_irq;
591 unsigned long rw_reqbuf;
592};
593
594struct ata_ering_entry {
595 unsigned int eflags;
596 unsigned int err_mask;
597 u64 timestamp;
598};
599
600struct ata_ering {
601 int cursor;
602 struct ata_ering_entry ring[ATA_ERING_SIZE];
603};
604
605struct ata_device {
606 struct ata_link *link;
607 unsigned int devno;
608 unsigned int horkage;
609 unsigned long flags;
610 struct scsi_device *sdev;
611 void *private_data;
612#ifdef CONFIG_ATA_ACPI
613 acpi_handle acpi_handle;
614 union acpi_object *gtf_cache;
615 unsigned int gtf_filter;
616#endif
617 struct device tdev;
618
619 u64 n_sectors;
620 u64 n_native_sectors;
621 unsigned int class;
622 unsigned long unpark_deadline;
623
624 u8 pio_mode;
625 u8 dma_mode;
626 u8 xfer_mode;
627 unsigned int xfer_shift;
628
629 unsigned int multi_count;
630
631 unsigned int max_sectors;
632 unsigned int cdb_len;
633
634
635 unsigned long pio_mask;
636 unsigned long mwdma_mask;
637 unsigned long udma_mask;
638
639
640 u16 cylinders;
641 u16 heads;
642 u16 sectors;
643
644 union {
645 u16 id[ATA_ID_WORDS];
646 u32 gscr[SATA_PMP_GSCR_DWORDS];
647 };
648
649
650 int spdn_cnt;
651
652 struct ata_ering ering;
653};
654
655
656
657
658#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
659#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
660
661struct ata_eh_info {
662 struct ata_device *dev;
663 u32 serror;
664 unsigned int err_mask;
665 unsigned int action;
666 unsigned int dev_action[ATA_MAX_DEVICES];
667 unsigned int flags;
668
669 unsigned int probe_mask;
670
671 char desc[ATA_EH_DESC_LEN];
672 int desc_len;
673};
674
675struct ata_eh_context {
676 struct ata_eh_info i;
677 int tries[ATA_MAX_DEVICES];
678 int cmd_timeout_idx[ATA_MAX_DEVICES]
679 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
680 unsigned int classes[ATA_MAX_DEVICES];
681 unsigned int did_probe_mask;
682 unsigned int unloaded_mask;
683 unsigned int saved_ncq_enabled;
684 u8 saved_xfer_mode[ATA_MAX_DEVICES];
685
686 unsigned long last_reset;
687};
688
689struct ata_acpi_drive
690{
691 u32 pio;
692 u32 dma;
693} __packed;
694
695struct ata_acpi_gtm {
696 struct ata_acpi_drive drive[2];
697 u32 flags;
698} __packed;
699
700struct ata_link {
701 struct ata_port *ap;
702 int pmp;
703
704 struct device tdev;
705 unsigned int active_tag;
706 u32 sactive;
707
708 unsigned int flags;
709
710 u32 saved_scontrol;
711 unsigned int hw_sata_spd_limit;
712 unsigned int sata_spd_limit;
713 unsigned int sata_spd;
714 enum ata_lpm_policy lpm_policy;
715
716
717 struct ata_eh_info eh_info;
718
719 struct ata_eh_context eh_context;
720
721 struct ata_device device[ATA_MAX_DEVICES];
722};
723#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
724#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
725
726struct ata_port {
727 struct Scsi_Host *scsi_host;
728 struct ata_port_operations *ops;
729 spinlock_t *lock;
730
731
732 unsigned long flags;
733
734 unsigned int pflags;
735 unsigned int print_id;
736 unsigned int port_no;
737
738#ifdef CONFIG_ATA_SFF
739 struct ata_ioports ioaddr;
740 u8 ctl;
741 u8 last_ctl;
742 struct ata_link* sff_pio_task_link;
743 struct delayed_work sff_pio_task;
744#ifdef CONFIG_ATA_BMDMA
745 struct ata_bmdma_prd *bmdma_prd;
746 dma_addr_t bmdma_prd_dma;
747#endif
748#endif
749
750 unsigned int pio_mask;
751 unsigned int mwdma_mask;
752 unsigned int udma_mask;
753 unsigned int cbl;
754
755 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
756 unsigned long qc_allocated;
757 unsigned int qc_active;
758 int nr_active_links;
759
760 struct ata_link link;
761 struct ata_link *slave_link;
762
763 int nr_pmp_links;
764 struct ata_link *pmp_link;
765 struct ata_link *excl_link;
766
767 struct ata_port_stats stats;
768 struct ata_host *host;
769 struct device *dev;
770 struct device tdev;
771
772 struct mutex scsi_scan_mutex;
773 struct delayed_work hotplug_task;
774 struct work_struct scsi_rescan_task;
775
776 unsigned int hsm_task_state;
777
778 u32 msg_enable;
779 struct list_head eh_done_q;
780 wait_queue_head_t eh_wait_q;
781 int eh_tries;
782 struct completion park_req_pending;
783
784 pm_message_t pm_mesg;
785 int *pm_result;
786 enum ata_lpm_policy target_lpm_policy;
787
788 struct timer_list fastdrain_timer;
789 unsigned long fastdrain_cnt;
790
791 int em_message_type;
792 void *private_data;
793
794#ifdef CONFIG_ATA_ACPI
795 acpi_handle acpi_handle;
796 struct ata_acpi_gtm __acpi_init_gtm;
797#endif
798
799 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
800};
801
802
803
804
805
806
807#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
808
809struct ata_port_operations {
810
811
812
813 int (*qc_defer)(struct ata_queued_cmd *qc);
814 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
815 void (*qc_prep)(struct ata_queued_cmd *qc);
816 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
817 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
818
819
820
821
822 int (*cable_detect)(struct ata_port *ap);
823 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
824 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
825 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
826 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
827 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
828
829 void (*dev_config)(struct ata_device *dev);
830
831 void (*freeze)(struct ata_port *ap);
832 void (*thaw)(struct ata_port *ap);
833 ata_prereset_fn_t prereset;
834 ata_reset_fn_t softreset;
835 ata_reset_fn_t hardreset;
836 ata_postreset_fn_t postreset;
837 ata_prereset_fn_t pmp_prereset;
838 ata_reset_fn_t pmp_softreset;
839 ata_reset_fn_t pmp_hardreset;
840 ata_postreset_fn_t pmp_postreset;
841 void (*error_handler)(struct ata_port *ap);
842 void (*lost_interrupt)(struct ata_port *ap);
843 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
844
845
846
847
848 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
849 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
850 void (*pmp_attach)(struct ata_port *ap);
851 void (*pmp_detach)(struct ata_port *ap);
852 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
853 unsigned hints);
854
855
856
857
858 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
859 int (*port_resume)(struct ata_port *ap);
860 int (*port_start)(struct ata_port *ap);
861 void (*port_stop)(struct ata_port *ap);
862 void (*host_stop)(struct ata_host *host);
863
864#ifdef CONFIG_ATA_SFF
865
866
867
868 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
869 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
870 u8 (*sff_check_status)(struct ata_port *ap);
871 u8 (*sff_check_altstatus)(struct ata_port *ap);
872 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
873 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
874 void (*sff_exec_command)(struct ata_port *ap,
875 const struct ata_taskfile *tf);
876 unsigned int (*sff_data_xfer)(struct ata_device *dev,
877 unsigned char *buf, unsigned int buflen, int rw);
878 void (*sff_irq_on)(struct ata_port *);
879 bool (*sff_irq_check)(struct ata_port *);
880 void (*sff_irq_clear)(struct ata_port *);
881 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
882
883#ifdef CONFIG_ATA_BMDMA
884 void (*bmdma_setup)(struct ata_queued_cmd *qc);
885 void (*bmdma_start)(struct ata_queued_cmd *qc);
886 void (*bmdma_stop)(struct ata_queued_cmd *qc);
887 u8 (*bmdma_status)(struct ata_port *ap);
888#endif
889#endif
890
891 ssize_t (*em_show)(struct ata_port *ap, char *buf);
892 ssize_t (*em_store)(struct ata_port *ap, const char *message,
893 size_t size);
894 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
895 ssize_t (*sw_activity_store)(struct ata_device *dev,
896 enum sw_activity val);
897
898
899
900 void (*phy_reset)(struct ata_port *ap);
901 void (*eng_timeout)(struct ata_port *ap);
902
903
904
905
906
907 const struct ata_port_operations *inherits;
908};
909
910struct ata_port_info {
911 unsigned long flags;
912 unsigned long link_flags;
913 unsigned long pio_mask;
914 unsigned long mwdma_mask;
915 unsigned long udma_mask;
916 struct ata_port_operations *port_ops;
917 void *private_data;
918};
919
920struct ata_timing {
921 unsigned short mode;
922 unsigned short setup;
923 unsigned short act8b;
924 unsigned short rec8b;
925 unsigned short cyc8b;
926 unsigned short active;
927 unsigned short recover;
928 unsigned short dmack_hold;
929 unsigned short cycle;
930 unsigned short udma;
931};
932
933
934
935
936extern const unsigned long sata_deb_timing_normal[];
937extern const unsigned long sata_deb_timing_hotplug[];
938extern const unsigned long sata_deb_timing_long[];
939
940extern struct ata_port_operations ata_dummy_port_ops;
941extern const struct ata_port_info ata_dummy_port_info;
942
943static inline const unsigned long *
944sata_ehc_deb_timing(struct ata_eh_context *ehc)
945{
946 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
947 return sata_deb_timing_hotplug;
948 else
949 return sata_deb_timing_normal;
950}
951
952static inline int ata_port_is_dummy(struct ata_port *ap)
953{
954 return ap->ops == &ata_dummy_port_ops;
955}
956
957extern int sata_set_spd(struct ata_link *link);
958extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
959extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
960 int (*check_ready)(struct ata_link *link));
961extern int sata_link_debounce(struct ata_link *link,
962 const unsigned long *params, unsigned long deadline);
963extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
964 unsigned long deadline);
965extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
966 bool spm_wakeup);
967extern int sata_link_hardreset(struct ata_link *link,
968 const unsigned long *timing, unsigned long deadline,
969 bool *online, int (*check_ready)(struct ata_link *));
970extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
971 unsigned long deadline);
972extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
973
974extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
975extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
976 const struct ata_port_info * const * ppi, int n_ports);
977extern int ata_slave_link_init(struct ata_port *ap);
978extern int ata_host_start(struct ata_host *host);
979extern int ata_host_register(struct ata_host *host,
980 struct scsi_host_template *sht);
981extern int ata_host_activate(struct ata_host *host, int irq,
982 irq_handler_t irq_handler, unsigned long irq_flags,
983 struct scsi_host_template *sht);
984extern void ata_host_detach(struct ata_host *host);
985extern void ata_host_init(struct ata_host *, struct device *,
986 unsigned long, struct ata_port_operations *);
987extern int ata_scsi_detect(struct scsi_host_template *sht);
988extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
989extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
990extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
991 int cmd, void __user *arg);
992extern void ata_sas_port_destroy(struct ata_port *);
993extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
994 struct ata_port_info *, struct Scsi_Host *);
995extern int ata_sas_port_init(struct ata_port *);
996extern int ata_sas_port_start(struct ata_port *ap);
997extern void ata_sas_port_stop(struct ata_port *ap);
998extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
999extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1000extern int sata_scr_valid(struct ata_link *link);
1001extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1002extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1003extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1004extern bool ata_link_online(struct ata_link *link);
1005extern bool ata_link_offline(struct ata_link *link);
1006#ifdef CONFIG_PM
1007extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1008extern void ata_host_resume(struct ata_host *host);
1009#endif
1010extern int ata_ratelimit(void);
1011extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1012extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1013 u32 val, unsigned long interval, unsigned long timeout);
1014extern int atapi_cmd_type(u8 opcode);
1015extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1016 u8 pmp, int is_cmd, u8 *fis);
1017extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1018extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1019 unsigned long mwdma_mask, unsigned long udma_mask);
1020extern void ata_unpack_xfermask(unsigned long xfer_mask,
1021 unsigned long *pio_mask, unsigned long *mwdma_mask,
1022 unsigned long *udma_mask);
1023extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1024extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1025extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1026extern const char *ata_mode_string(unsigned long xfer_mask);
1027extern unsigned long ata_id_xfermask(const u16 *id);
1028extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1029extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1030extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1031 unsigned int n_elem);
1032extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1033extern void ata_dev_disable(struct ata_device *adev);
1034extern void ata_id_string(const u16 *id, unsigned char *s,
1035 unsigned int ofs, unsigned int len);
1036extern void ata_id_c_string(const u16 *id, unsigned char *s,
1037 unsigned int ofs, unsigned int len);
1038extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1039 struct ata_taskfile *tf, u16 *id);
1040extern void ata_qc_complete(struct ata_queued_cmd *qc);
1041extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1042extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1043extern int ata_std_bios_param(struct scsi_device *sdev,
1044 struct block_device *bdev,
1045 sector_t capacity, int geom[]);
1046extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1047extern int ata_scsi_slave_config(struct scsi_device *sdev);
1048extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1049extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1050 int queue_depth, int reason);
1051extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1052extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1053
1054extern int ata_cable_40wire(struct ata_port *ap);
1055extern int ata_cable_80wire(struct ata_port *ap);
1056extern int ata_cable_sata(struct ata_port *ap);
1057extern int ata_cable_ignore(struct ata_port *ap);
1058extern int ata_cable_unknown(struct ata_port *ap);
1059
1060
1061extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1062extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1063extern int ata_timing_compute(struct ata_device *, unsigned short,
1064 struct ata_timing *, int, int);
1065extern void ata_timing_merge(const struct ata_timing *,
1066 const struct ata_timing *, struct ata_timing *,
1067 unsigned int);
1068extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1069
1070
1071#ifdef CONFIG_PCI
1072struct pci_dev;
1073
1074struct pci_bits {
1075 unsigned int reg;
1076 unsigned int width;
1077 unsigned long mask;
1078 unsigned long val;
1079};
1080
1081extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1082extern void ata_pci_remove_one(struct pci_dev *pdev);
1083
1084#ifdef CONFIG_PM
1085extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1086extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1087extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1088extern int ata_pci_device_resume(struct pci_dev *pdev);
1089#endif
1090#endif
1091
1092
1093
1094
1095#ifdef CONFIG_ATA_ACPI
1096static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1097{
1098 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1099 return &ap->__acpi_init_gtm;
1100 return NULL;
1101}
1102int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1103int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1104unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1105 const struct ata_acpi_gtm *gtm);
1106int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1107#else
1108static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1109{
1110 return NULL;
1111}
1112
1113static inline int ata_acpi_stm(const struct ata_port *ap,
1114 struct ata_acpi_gtm *stm)
1115{
1116 return -ENOSYS;
1117}
1118
1119static inline int ata_acpi_gtm(const struct ata_port *ap,
1120 struct ata_acpi_gtm *stm)
1121{
1122 return -ENOSYS;
1123}
1124
1125static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1126 const struct ata_acpi_gtm *gtm)
1127{
1128 return 0;
1129}
1130
1131static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1132 const struct ata_acpi_gtm *gtm)
1133{
1134 return 0;
1135}
1136#endif
1137
1138
1139
1140
1141extern void ata_port_schedule_eh(struct ata_port *ap);
1142extern int ata_link_abort(struct ata_link *link);
1143extern int ata_port_abort(struct ata_port *ap);
1144extern int ata_port_freeze(struct ata_port *ap);
1145extern int sata_async_notification(struct ata_port *ap);
1146
1147extern void ata_eh_freeze_port(struct ata_port *ap);
1148extern void ata_eh_thaw_port(struct ata_port *ap);
1149
1150extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1151extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1152extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1153
1154extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1155 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1156 ata_postreset_fn_t postreset);
1157extern void ata_std_error_handler(struct ata_port *ap);
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180extern const struct ata_port_operations ata_base_port_ops;
1181extern const struct ata_port_operations sata_port_ops;
1182extern struct device_attribute *ata_common_sdev_attrs[];
1183
1184#define ATA_BASE_SHT(drv_name) \
1185 .module = THIS_MODULE, \
1186 .name = drv_name, \
1187 .ioctl = ata_scsi_ioctl, \
1188 .queuecommand = ata_scsi_queuecmd, \
1189 .can_queue = ATA_DEF_QUEUE, \
1190 .this_id = ATA_SHT_THIS_ID, \
1191 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1192 .emulated = ATA_SHT_EMULATED, \
1193 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1194 .proc_name = drv_name, \
1195 .slave_configure = ata_scsi_slave_config, \
1196 .slave_destroy = ata_scsi_slave_destroy, \
1197 .bios_param = ata_std_bios_param, \
1198 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1199 .sdev_attrs = ata_common_sdev_attrs
1200
1201#define ATA_NCQ_SHT(drv_name) \
1202 ATA_BASE_SHT(drv_name), \
1203 .change_queue_depth = ata_scsi_change_queue_depth
1204
1205
1206
1207
1208#ifdef CONFIG_SATA_PMP
1209static inline bool sata_pmp_supported(struct ata_port *ap)
1210{
1211 return ap->flags & ATA_FLAG_PMP;
1212}
1213
1214static inline bool sata_pmp_attached(struct ata_port *ap)
1215{
1216 return ap->nr_pmp_links != 0;
1217}
1218
1219static inline int ata_is_host_link(const struct ata_link *link)
1220{
1221 return link == &link->ap->link || link == link->ap->slave_link;
1222}
1223#else
1224static inline bool sata_pmp_supported(struct ata_port *ap)
1225{
1226 return false;
1227}
1228
1229static inline bool sata_pmp_attached(struct ata_port *ap)
1230{
1231 return false;
1232}
1233
1234static inline int ata_is_host_link(const struct ata_link *link)
1235{
1236 return 1;
1237}
1238#endif
1239
1240static inline int sata_srst_pmp(struct ata_link *link)
1241{
1242 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1243 return SATA_PMP_CTRL_PORT;
1244 return link->pmp;
1245}
1246
1247
1248
1249
1250#define ata_port_printk(ap, lv, fmt, args...) \
1251 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
1252
1253#define ata_link_printk(link, lv, fmt, args...) do { \
1254 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
1255 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
1256 (link)->pmp , ##args); \
1257 else \
1258 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
1259 } while(0)
1260
1261#define ata_dev_printk(dev, lv, fmt, args...) \
1262 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
1263 (dev)->link->pmp + (dev)->devno , ##args)
1264
1265
1266
1267
1268extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1269 __attribute__ ((format (printf, 2, 3)));
1270extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1271 __attribute__ ((format (printf, 2, 3)));
1272extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1273
1274static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1275{
1276 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1277 ehi->flags |= ATA_EHI_HOTPLUGGED;
1278 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1279 ehi->err_mask |= AC_ERR_ATA_BUS;
1280}
1281
1282
1283
1284
1285extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
1286 __attribute__ ((format (printf, 2, 3)));
1287#ifdef CONFIG_PCI
1288extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1289 const char *name);
1290#endif
1291
1292static inline unsigned int ata_tag_valid(unsigned int tag)
1293{
1294 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1295}
1296
1297static inline unsigned int ata_tag_internal(unsigned int tag)
1298{
1299 return tag == ATA_TAG_INTERNAL;
1300}
1301
1302
1303
1304
1305static inline unsigned int ata_class_enabled(unsigned int class)
1306{
1307 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1308 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
1309}
1310
1311static inline unsigned int ata_class_disabled(unsigned int class)
1312{
1313 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1314 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
1315}
1316
1317static inline unsigned int ata_class_absent(unsigned int class)
1318{
1319 return !ata_class_enabled(class) && !ata_class_disabled(class);
1320}
1321
1322static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1323{
1324 return ata_class_enabled(dev->class);
1325}
1326
1327static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1328{
1329 return ata_class_disabled(dev->class);
1330}
1331
1332static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1333{
1334 return ata_class_absent(dev->class);
1335}
1336
1337
1338
1339
1340static inline int ata_link_max_devices(const struct ata_link *link)
1341{
1342 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1343 return 2;
1344 return 1;
1345}
1346
1347static inline int ata_link_active(struct ata_link *link)
1348{
1349 return ata_tag_valid(link->active_tag) || link->sactive;
1350}
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364enum ata_link_iter_mode {
1365 ATA_LITER_EDGE,
1366
1367 ATA_LITER_HOST_FIRST,
1368 ATA_LITER_PMP_FIRST,
1369
1370};
1371
1372enum ata_dev_iter_mode {
1373 ATA_DITER_ENABLED,
1374 ATA_DITER_ENABLED_REVERSE,
1375 ATA_DITER_ALL,
1376 ATA_DITER_ALL_REVERSE,
1377};
1378
1379extern struct ata_link *ata_link_next(struct ata_link *link,
1380 struct ata_port *ap,
1381 enum ata_link_iter_mode mode);
1382
1383extern struct ata_device *ata_dev_next(struct ata_device *dev,
1384 struct ata_link *link,
1385 enum ata_dev_iter_mode mode);
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401#define ata_for_each_link(link, ap, mode) \
1402 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1403 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1404
1405#define ata_for_each_dev(dev, link, mode) \
1406 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1407 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419static inline int ata_ncq_enabled(struct ata_device *dev)
1420{
1421 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1422 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1423}
1424
1425static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1426{
1427 qc->tf.ctl |= ATA_NIEN;
1428}
1429
1430static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1431 unsigned int tag)
1432{
1433 if (likely(ata_tag_valid(tag)))
1434 return &ap->qcmd[tag];
1435 return NULL;
1436}
1437
1438static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1439 unsigned int tag)
1440{
1441 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1442
1443 if (unlikely(!qc) || !ap->ops->error_handler)
1444 return qc;
1445
1446 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1447 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1448 return qc;
1449
1450 return NULL;
1451}
1452
1453static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1454{
1455 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1456}
1457
1458static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1459{
1460 memset(tf, 0, sizeof(*tf));
1461
1462#ifdef CONFIG_ATA_SFF
1463 tf->ctl = dev->link->ap->ctl;
1464#else
1465 tf->ctl = ATA_DEVCTL_OBS;
1466#endif
1467 if (dev->devno == 0)
1468 tf->device = ATA_DEVICE_OBS;
1469 else
1470 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1471}
1472
1473static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1474{
1475 qc->dma_dir = DMA_NONE;
1476 qc->sg = NULL;
1477 qc->flags = 0;
1478 qc->cursg = NULL;
1479 qc->cursg_ofs = 0;
1480 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1481 qc->n_elem = 0;
1482 qc->err_mask = 0;
1483 qc->sect_size = ATA_SECT_SIZE;
1484
1485 ata_tf_init(qc->dev, &qc->tf);
1486
1487
1488 qc->result_tf.command = ATA_DRDY;
1489 qc->result_tf.feature = 0;
1490}
1491
1492static inline int ata_try_flush_cache(const struct ata_device *dev)
1493{
1494 return ata_id_wcache_enabled(dev->id) ||
1495 ata_id_has_flush(dev->id) ||
1496 ata_id_has_flush_ext(dev->id);
1497}
1498
1499static inline unsigned int ac_err_mask(u8 status)
1500{
1501 if (status & (ATA_BUSY | ATA_DRQ))
1502 return AC_ERR_HSM;
1503 if (status & (ATA_ERR | ATA_DF))
1504 return AC_ERR_DEV;
1505 return 0;
1506}
1507
1508static inline unsigned int __ac_err_mask(u8 status)
1509{
1510 unsigned int mask = ac_err_mask(status);
1511 if (mask == 0)
1512 return AC_ERR_OTHER;
1513 return mask;
1514}
1515
1516static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1517{
1518 return *(struct ata_port **)&host->hostdata[0];
1519}
1520
1521static inline int ata_check_ready(u8 status)
1522{
1523 if (!(status & ATA_BUSY))
1524 return 1;
1525
1526
1527 if (status == 0xff)
1528 return -ENODEV;
1529
1530 return 0;
1531}
1532
1533static inline unsigned long ata_deadline(unsigned long from_jiffies,
1534 unsigned long timeout_msecs)
1535{
1536 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1537}
1538
1539
1540
1541
1542
1543static inline int ata_using_mwdma(struct ata_device *adev)
1544{
1545 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1546 return 1;
1547 return 0;
1548}
1549
1550static inline int ata_using_udma(struct ata_device *adev)
1551{
1552 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1553 return 1;
1554 return 0;
1555}
1556
1557static inline int ata_dma_enabled(struct ata_device *adev)
1558{
1559 return (adev->dma_mode == 0xFF ? 0 : 1);
1560}
1561
1562
1563
1564
1565#ifdef CONFIG_SATA_PMP
1566
1567extern const struct ata_port_operations sata_pmp_port_ops;
1568
1569extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1570extern void sata_pmp_error_handler(struct ata_port *ap);
1571
1572#else
1573
1574#define sata_pmp_port_ops sata_port_ops
1575#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1576#define sata_pmp_error_handler ata_std_error_handler
1577
1578#endif
1579
1580
1581
1582
1583
1584#ifdef CONFIG_ATA_SFF
1585
1586extern const struct ata_port_operations ata_sff_port_ops;
1587extern const struct ata_port_operations ata_bmdma32_port_ops;
1588
1589
1590#define ATA_PIO_SHT(drv_name) \
1591 ATA_BASE_SHT(drv_name), \
1592 .sg_tablesize = LIBATA_MAX_PRD, \
1593 .dma_boundary = ATA_DMA_BOUNDARY
1594
1595extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1596extern u8 ata_sff_check_status(struct ata_port *ap);
1597extern void ata_sff_pause(struct ata_port *ap);
1598extern void ata_sff_dma_pause(struct ata_port *ap);
1599extern int ata_sff_busy_sleep(struct ata_port *ap,
1600 unsigned long timeout_pat, unsigned long timeout);
1601extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1602extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1603extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1604extern void ata_sff_exec_command(struct ata_port *ap,
1605 const struct ata_taskfile *tf);
1606extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
1607 unsigned char *buf, unsigned int buflen, int rw);
1608extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1609 unsigned char *buf, unsigned int buflen, int rw);
1610extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
1611 unsigned char *buf, unsigned int buflen, int rw);
1612extern void ata_sff_irq_on(struct ata_port *ap);
1613extern void ata_sff_irq_clear(struct ata_port *ap);
1614extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1615 u8 status, int in_wq);
1616extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1617extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1618extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1619extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1620 struct ata_queued_cmd *qc);
1621extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1622extern void ata_sff_lost_interrupt(struct ata_port *ap);
1623extern void ata_sff_freeze(struct ata_port *ap);
1624extern void ata_sff_thaw(struct ata_port *ap);
1625extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1626extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1627 u8 *r_err);
1628extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1629 unsigned long deadline);
1630extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1631 unsigned long deadline);
1632extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1633 unsigned long deadline);
1634extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1635extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1636extern void ata_sff_error_handler(struct ata_port *ap);
1637extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1638#ifdef CONFIG_PCI
1639extern int ata_pci_sff_init_host(struct ata_host *host);
1640extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1641 const struct ata_port_info * const * ppi,
1642 struct ata_host **r_host);
1643extern int ata_pci_sff_activate_host(struct ata_host *host,
1644 irq_handler_t irq_handler,
1645 struct scsi_host_template *sht);
1646extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1647 const struct ata_port_info * const * ppi,
1648 struct scsi_host_template *sht, void *host_priv, int hflags);
1649#endif
1650
1651#ifdef CONFIG_ATA_BMDMA
1652
1653extern const struct ata_port_operations ata_bmdma_port_ops;
1654
1655#define ATA_BMDMA_SHT(drv_name) \
1656 ATA_BASE_SHT(drv_name), \
1657 .sg_tablesize = LIBATA_MAX_PRD, \
1658 .dma_boundary = ATA_DMA_BOUNDARY
1659
1660extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1661extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1662extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1663extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1664 struct ata_queued_cmd *qc);
1665extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1666extern void ata_bmdma_error_handler(struct ata_port *ap);
1667extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1668extern void ata_bmdma_irq_clear(struct ata_port *ap);
1669extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1670extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1671extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1672extern u8 ata_bmdma_status(struct ata_port *ap);
1673extern int ata_bmdma_port_start(struct ata_port *ap);
1674extern int ata_bmdma_port_start32(struct ata_port *ap);
1675
1676#ifdef CONFIG_PCI
1677extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1678extern void ata_pci_bmdma_init(struct ata_host *host);
1679extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1680 const struct ata_port_info * const * ppi,
1681 struct ata_host **r_host);
1682extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1683 const struct ata_port_info * const * ppi,
1684 struct scsi_host_template *sht,
1685 void *host_priv, int hflags);
1686#endif
1687#endif
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1703 unsigned int max)
1704{
1705 u8 status;
1706
1707 do {
1708 udelay(10);
1709 status = ap->ops->sff_check_status(ap);
1710 max--;
1711 } while (status != 0xff && (status & bits) && (max > 0));
1712
1713 return status;
1714}
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726static inline u8 ata_wait_idle(struct ata_port *ap)
1727{
1728 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1729
1730#ifdef ATA_DEBUG
1731 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1732 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1733 status);
1734#endif
1735
1736 return status;
1737}
1738#endif
1739
1740#endif
1741