1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2005 Jeff Garzik
6 * libata documentation is available via 'make {ps|pdf}docs',
7 * as Documentation/driver-api/libata.rst
10 #ifndef __LINUX_LIBATA_H__
11 #define __LINUX_LIBATA_H__
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>
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>
28 * Define if arch has non-standard setup. This is a _PCI_ standard
29 * not a legacy or ISA standard.
31 #ifdef CONFIG_ATA_NONSTANDARD
32 #include <asm/libata-portmap.h>
34 #define ATA_PRIMARY_IRQ(dev) 14
35 #define ATA_SECONDARY_IRQ(dev) 15
39 * compile-time options: to be removed as soon as all the drivers are
40 * converted to the new debugging mechanism
42 #undef ATA_DEBUG /* debugging output */
43 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
44 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
45 #undef ATA_NDEBUG /* define to disable quick runtime checks */
48 /* note: prints function name for you */
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)
54 #define VPRINTK(fmt, args...)
55 #endif /* ATA_VERBOSE_DEBUG */
57 #define DPRINTK(fmt, args...)
58 #define VPRINTK(fmt, args...)
59 #endif /* ATA_DEBUG */
61 #define ata_print_version_once(dev, version) \
63 static bool __print_once; \
65 if (!__print_once) { \
66 __print_once = true; \
67 ata_print_version(dev, version); \
71 /* NEW: debug levels */
72 #define HAVE_LIBATA_MSG 1
76 ATA_MSG_INFO
= 0x0002,
77 ATA_MSG_PROBE
= 0x0004,
78 ATA_MSG_WARN
= 0x0008,
79 ATA_MSG_MALLOC
= 0x0010,
81 ATA_MSG_INTR
= 0x0040,
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)
94 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
96 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
97 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
100 return (1 << dval
) - 1;
103 /* defines only for the constants which don't work well as enums */
104 #define ATA_TAG_POISON 0xfafbfcfdU
107 /* various global constants */
108 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
109 LIBATA_DUMB_MAX_PRD
= ATA_MAX_PRD
/ 4, /* Worst case */
112 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
,
113 ATA_SHORT_PAUSE
= 16,
115 ATAPI_MAX_DRAIN
= 16 << 10,
117 ATA_ALL_DEVICES
= (1 << ATA_MAX_DEVICES
) - 1,
119 ATA_SHT_EMULATED
= 1,
120 ATA_SHT_THIS_ID
= -1,
122 /* struct ata_taskfile flags */
123 ATA_TFLAG_LBA48
= (1 << 0), /* enable 48-bit LBA and "HOB" */
124 ATA_TFLAG_ISADDR
= (1 << 1), /* enable r/w to nsect/lba regs */
125 ATA_TFLAG_DEVICE
= (1 << 2), /* enable r/w to device reg */
126 ATA_TFLAG_WRITE
= (1 << 3), /* data dir: host->dev==1 (write) */
127 ATA_TFLAG_LBA
= (1 << 4), /* enable LBA */
128 ATA_TFLAG_FUA
= (1 << 5), /* enable FUA */
129 ATA_TFLAG_POLLING
= (1 << 6), /* set nIEN to 1 and use polling */
131 /* struct ata_device stuff */
132 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
133 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
134 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
135 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
136 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
137 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
138 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
139 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
140 ATA_DFLAG_TRUSTED
= (1 << 8), /* device supports trusted send/recv */
141 ATA_DFLAG_DMADIR
= (1 << 10), /* device requires DMADIR */
142 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
144 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
145 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
146 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
147 ATA_DFLAG_DUBIOUS_XFER
= (1 << 16), /* data transfer not verified */
148 ATA_DFLAG_NO_UNLOAD
= (1 << 17), /* device doesn't support unload */
149 ATA_DFLAG_UNLOCK_HPA
= (1 << 18), /* unlock HPA */
150 ATA_DFLAG_NCQ_SEND_RECV
= (1 << 19), /* device supports NCQ SEND and RECV */
151 ATA_DFLAG_NCQ_PRIO
= (1 << 20), /* device supports NCQ priority */
152 ATA_DFLAG_NCQ_PRIO_ENABLE
= (1 << 21), /* Priority cmds sent to dev */
153 ATA_DFLAG_INIT_MASK
= (1 << 24) - 1,
155 ATA_DFLAG_DETACH
= (1 << 24),
156 ATA_DFLAG_DETACHED
= (1 << 25),
158 ATA_DFLAG_DA
= (1 << 26), /* device supports Device Attention */
159 ATA_DFLAG_DEVSLP
= (1 << 27), /* device supports Device Sleep */
160 ATA_DFLAG_ACPI_DISABLED
= (1 << 28), /* ACPI for the device is disabled */
161 ATA_DFLAG_D_SENSE
= (1 << 29), /* Descriptor sense requested */
162 ATA_DFLAG_ZAC
= (1 << 30), /* ZAC device */
164 ATA_DEV_UNKNOWN
= 0, /* unknown device */
165 ATA_DEV_ATA
= 1, /* ATA device */
166 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
167 ATA_DEV_ATAPI
= 3, /* ATAPI device */
168 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
169 ATA_DEV_PMP
= 5, /* SATA port multiplier */
170 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
171 ATA_DEV_SEMB
= 7, /* SEMB */
172 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
173 ATA_DEV_ZAC
= 9, /* ZAC device */
174 ATA_DEV_ZAC_UNSUP
= 10, /* ZAC device (unsupported) */
175 ATA_DEV_NONE
= 11, /* no device */
177 /* struct ata_link flags */
178 /* NOTE: struct ata_force_param currently stores lflags in u16 */
179 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
180 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
181 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
182 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
183 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
184 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
185 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
186 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
187 ATA_LFLAG_NO_LPM
= (1 << 8), /* disable LPM on this link */
188 ATA_LFLAG_RST_ONCE
= (1 << 9), /* limit recovery to one reset */
189 ATA_LFLAG_CHANGED
= (1 << 10), /* LPM state changed on this link */
190 ATA_LFLAG_NO_DB_DELAY
= (1 << 11), /* no debounce delay on link resume */
192 /* struct ata_port flags */
193 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
194 /* (doesn't imply presence) */
195 ATA_FLAG_SATA
= (1 << 1),
196 ATA_FLAG_NO_LPM
= (1 << 2), /* host not happy with LPM */
197 ATA_FLAG_NO_LOG_PAGE
= (1 << 5), /* do not issue log page read */
198 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
199 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
200 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
201 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
202 * doesn't handle PIO interrupts */
203 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
204 ATA_FLAG_NO_POWEROFF_SPINDOWN
= (1 << 11), /* don't spindown before poweroff */
205 ATA_FLAG_NO_HIBERNATE_SPINDOWN
= (1 << 12), /* don't spindown before hibernation */
206 ATA_FLAG_DEBUGMSG
= (1 << 13),
207 ATA_FLAG_FPDMA_AA
= (1 << 14), /* driver supports Auto-Activate */
208 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
209 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
210 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
211 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
212 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
213 ATA_FLAG_FPDMA_AUX
= (1 << 20), /* controller supports H2DFIS aux field */
214 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
216 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
218 ATA_FLAG_NO_DIPM
= (1 << 23), /* host not happy with DIPM */
219 ATA_FLAG_SAS_HOST
= (1 << 24), /* SAS host */
221 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
224 /* struct ata_port pflags */
225 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
226 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
227 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
228 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
229 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
230 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
231 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
232 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
233 ATA_PFLAG_UNLOADING
= (1 << 9), /* driver is being unloaded */
234 ATA_PFLAG_UNLOADED
= (1 << 10), /* driver is unloaded */
236 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
237 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
238 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
240 ATA_PFLAG_PIO32
= (1 << 20), /* 32bit PIO */
241 ATA_PFLAG_PIO32CHANGE
= (1 << 21), /* 32bit PIO can be turned on/off */
242 ATA_PFLAG_EXTERNAL
= (1 << 22), /* eSATA/external port */
244 /* struct ata_queued_cmd flags */
245 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
246 ATA_QCFLAG_DMAMAP
= (1 << 1), /* SG table is DMA mapped */
247 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
248 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
249 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
250 ATA_QCFLAG_QUIET
= (1 << 6), /* don't report device error */
251 ATA_QCFLAG_RETRY
= (1 << 7), /* retry after failure */
253 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
254 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
255 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
258 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
259 ATA_HOST_STARTED
= (1 << 1), /* Host started */
260 ATA_HOST_PARALLEL_SCAN
= (1 << 2), /* Ports on this host can be scanned in parallel */
261 ATA_HOST_IGNORE_ATA
= (1 << 3), /* Ignore ATA devices on this host. */
263 /* bits 24:31 of host->flags are reserved for LLD specific flags */
265 /* various lengths of time */
266 ATA_TMOUT_BOOT
= 30000, /* heuristic */
267 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
268 ATA_TMOUT_INTERNAL_QUICK
= 5000,
269 ATA_TMOUT_MAX_PARK
= 30000,
272 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
273 * is too much without parallel probing. Use 2s if parallel
274 * probing is available, 800ms otherwise.
276 ATA_TMOUT_FF_WAIT_LONG
= 2000,
277 ATA_TMOUT_FF_WAIT
= 800,
279 /* Spec mandates to wait for ">= 2ms" before checking status
280 * after reset. We wait 150ms, because that was the magic
281 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
282 * the period of time between when the ATA command register is
283 * written, and then status is checked. Because waiting for
284 * "a while" before checking status is fine, post SRST, we
285 * perform this magic delay here as well.
287 * Old drivers/ide uses the 2mS rule and then waits for ready.
289 ATA_WAIT_AFTER_RESET
= 150,
291 /* If PMP is supported, we have to do follow-up SRST. As some
292 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
293 * advised to wait only for the following duration before
296 ATA_TMOUT_PMP_SRST_WAIT
= 5000,
298 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
299 * be a spurious PHY event, so ignore the first PHY event that
300 * occurs within 10s after the policy change.
302 ATA_TMOUT_SPURIOUS_PHY
= 10000,
316 /* SATA port states */
321 /* encoding various smaller bitmaps into a single
322 * unsigned long bitmap
324 ATA_NR_PIO_MODES
= 7,
325 ATA_NR_MWDMA_MODES
= 5,
326 ATA_NR_UDMA_MODES
= 8,
329 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
330 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
334 /* size of buffer to pad xfers ending on unaligned boundaries */
340 /* return values for ->qc_defer */
344 /* desc_len for ata_eh_info and context */
345 ATA_EH_DESC_LEN
= 80,
347 /* reset / recovery action types */
348 ATA_EH_REVALIDATE
= (1 << 0),
349 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
350 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
351 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
352 ATA_EH_ENABLE_LINK
= (1 << 3),
353 ATA_EH_PARK
= (1 << 5), /* unload heads and stop I/O */
355 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
| ATA_EH_PARK
,
356 ATA_EH_ALL_ACTIONS
= ATA_EH_REVALIDATE
| ATA_EH_RESET
|
359 /* ata_eh_info->flags */
360 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
361 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
362 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
363 ATA_EHI_NO_RECOVERY
= (1 << 4), /* no recovery */
365 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
366 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
367 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
368 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
369 ATA_EHI_POST_SETMODE
= (1 << 20), /* revalidating after setmode */
371 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
373 /* mask of flags to transfer *to* the slave link */
374 ATA_EHI_TO_SLAVE_MASK
= ATA_EHI_NO_AUTOPSY
| ATA_EHI_QUIET
,
376 /* max tries if error condition is still set after ->error_handler */
377 ATA_EH_MAX_TRIES
= 5,
379 /* sometimes resuming a link requires several retries */
380 ATA_LINK_RESUME_TRIES
= 5,
382 /* how hard are we gonna try to probe/recover devices */
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,
388 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
390 /* This should match the actual table size of
391 * ata_eh_cmd_timeout_table in libata-eh.c.
393 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 6,
395 /* Horkage types. May be set by libata or controller on drives
396 (some horkage may be drive/controller pair dependent */
398 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
399 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
400 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
401 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
402 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
403 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
404 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
405 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
406 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
407 ATA_HORKAGE_BRIDGE_OK
= (1 << 10), /* no bridge limits */
408 ATA_HORKAGE_ATAPI_MOD16_DMA
= (1 << 11), /* use ATAPI DMA for commands
409 not multiple of 16 bytes */
410 ATA_HORKAGE_FIRMWARE_WARN
= (1 << 12), /* firmware update warning */
411 ATA_HORKAGE_1_5_GBPS
= (1 << 13), /* force 1.5 Gbps */
412 ATA_HORKAGE_NOSETXFER
= (1 << 14), /* skip SETXFER, SATA only */
413 ATA_HORKAGE_BROKEN_FPDMA_AA
= (1 << 15), /* skip AA */
414 ATA_HORKAGE_DUMP_ID
= (1 << 16), /* dump IDENTIFY data */
415 ATA_HORKAGE_MAX_SEC_LBA48
= (1 << 17), /* Set max sects to 65535 */
416 ATA_HORKAGE_ATAPI_DMADIR
= (1 << 18), /* device requires dmadir */
417 ATA_HORKAGE_NO_NCQ_TRIM
= (1 << 19), /* don't use queued TRIM */
418 ATA_HORKAGE_NOLPM
= (1 << 20), /* don't use LPM */
419 ATA_HORKAGE_WD_BROKEN_LPM
= (1 << 21), /* some WDs have broken LPM */
420 ATA_HORKAGE_ZERO_AFTER_TRIM
= (1 << 22),/* guarantees zero after trim */
421 ATA_HORKAGE_NO_DMA_LOG
= (1 << 23), /* don't use DMA for log read */
422 ATA_HORKAGE_NOTRIM
= (1 << 24), /* don't use TRIM */
423 ATA_HORKAGE_MAX_SEC_1024
= (1 << 25), /* Limit max sects to 1024 */
425 /* DMA mask for user DMA control: User visible values; DO NOT
427 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
428 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
429 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
431 /* ATAPI command types */
432 ATAPI_READ
= 0, /* READs */
433 ATAPI_WRITE
= 1, /* WRITEs */
434 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
435 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
436 ATAPI_MISC
= 4, /* the rest */
438 /* Timing constants */
439 ATA_TIMING_SETUP
= (1 << 0),
440 ATA_TIMING_ACT8B
= (1 << 1),
441 ATA_TIMING_REC8B
= (1 << 2),
442 ATA_TIMING_CYC8B
= (1 << 3),
443 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
445 ATA_TIMING_ACTIVE
= (1 << 4),
446 ATA_TIMING_RECOVER
= (1 << 5),
447 ATA_TIMING_DMACK_HOLD
= (1 << 6),
448 ATA_TIMING_CYCLE
= (1 << 7),
449 ATA_TIMING_UDMA
= (1 << 8),
450 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
451 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
452 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
453 ATA_TIMING_DMACK_HOLD
| ATA_TIMING_CYCLE
|
457 ATA_ACPI_FILTER_SETXFER
= 1 << 0,
458 ATA_ACPI_FILTER_LOCK
= 1 << 1,
459 ATA_ACPI_FILTER_DIPM
= 1 << 2,
460 ATA_ACPI_FILTER_FPDMA_OFFSET
= 1 << 3, /* FPDMA non-zero offset */
461 ATA_ACPI_FILTER_FPDMA_AA
= 1 << 4, /* FPDMA auto activate */
463 ATA_ACPI_FILTER_DEFAULT
= ATA_ACPI_FILTER_SETXFER
|
464 ATA_ACPI_FILTER_LOCK
|
465 ATA_ACPI_FILTER_DIPM
,
469 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
471 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
473 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
477 enum hsm_task_states
{
478 HSM_ST_IDLE
, /* no command on going */
479 HSM_ST_FIRST
, /* (waiting the device to)
480 write CDB or first data block */
481 HSM_ST
, /* (waiting the device to) transfer data */
482 HSM_ST_LAST
, /* (waiting the device to) complete command */
483 HSM_ST_ERR
, /* error */
486 enum ata_completion_errors
{
487 AC_ERR_OK
= 0, /* no error */
488 AC_ERR_DEV
= (1 << 0), /* device reported error */
489 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
490 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
491 AC_ERR_MEDIA
= (1 << 3), /* media error */
492 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
493 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
494 AC_ERR_SYSTEM
= (1 << 6), /* system error */
495 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
496 AC_ERR_OTHER
= (1 << 8), /* unknown */
497 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
498 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
502 * Link power management policy: If you alter this, you also need to
503 * alter libata-scsi.c (for the ascii descriptions)
505 enum ata_lpm_policy
{
509 ATA_LPM_MED_POWER_WITH_DIPM
, /* Med power + DIPM as win IRST does */
510 ATA_LPM_MIN_POWER_WITH_PARTIAL
, /* Min Power + partial and slumber */
511 ATA_LPM_MIN_POWER
, /* Min power + no partial (slumber only) */
515 ATA_LPM_EMPTY
= (1 << 0), /* port empty/probing */
516 ATA_LPM_HIPM
= (1 << 1), /* may use HIPM */
517 ATA_LPM_WAKE_ONLY
= (1 << 2), /* only wake up link */
520 /* forward declarations */
522 struct ata_port_operations
;
525 struct ata_queued_cmd
;
528 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
529 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
530 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
531 unsigned long deadline
);
532 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
534 extern struct device_attribute dev_attr_unload_heads
;
535 #ifdef CONFIG_SATA_HOST
536 extern struct device_attribute dev_attr_link_power_management_policy
;
537 extern struct device_attribute dev_attr_ncq_prio_enable
;
538 extern struct device_attribute dev_attr_em_message_type
;
539 extern struct device_attribute dev_attr_em_message
;
540 extern struct device_attribute dev_attr_sw_activity
;
549 struct ata_taskfile
{
550 unsigned long flags
; /* ATA_TFLAG_xxx */
551 u8 protocol
; /* ATA_PROT_xxx */
553 u8 ctl
; /* control reg */
555 u8 hob_feature
; /* additional data */
556 u8 hob_nsect
; /* to support LBA48 */
569 u8 command
; /* IO operation */
571 u32 auxiliary
; /* auxiliary field */
572 /* from SATA 3.1 and */
576 #ifdef CONFIG_ATA_SFF
578 void __iomem
*cmd_addr
;
579 void __iomem
*data_addr
;
580 void __iomem
*error_addr
;
581 void __iomem
*feature_addr
;
582 void __iomem
*nsect_addr
;
583 void __iomem
*lbal_addr
;
584 void __iomem
*lbam_addr
;
585 void __iomem
*lbah_addr
;
586 void __iomem
*device_addr
;
587 void __iomem
*status_addr
;
588 void __iomem
*command_addr
;
589 void __iomem
*altstatus_addr
;
590 void __iomem
*ctl_addr
;
591 #ifdef CONFIG_ATA_BMDMA
592 void __iomem
*bmdma_addr
;
593 #endif /* CONFIG_ATA_BMDMA */
594 void __iomem
*scr_addr
;
596 #endif /* CONFIG_ATA_SFF */
601 void __iomem
* const *iomap
;
602 unsigned int n_ports
;
603 unsigned int n_tags
; /* nr of NCQ tags */
605 struct ata_port_operations
*ops
;
609 struct mutex eh_mutex
;
610 struct task_struct
*eh_owner
;
612 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
613 struct ata_port
*ports
[];
616 struct ata_queued_cmd
{
618 struct ata_device
*dev
;
620 struct scsi_cmnd
*scsicmd
;
621 void (*scsidone
)(struct scsi_cmnd
*);
623 struct ata_taskfile tf
;
624 u8 cdb
[ATAPI_CDB_LEN
];
626 unsigned long flags
; /* ATA_QCFLAG_xxx */
627 unsigned int tag
; /* libata core tag */
628 unsigned int hw_tag
; /* driver tag */
630 unsigned int orig_n_elem
;
634 unsigned int sect_size
;
637 unsigned int extrabytes
;
638 unsigned int curbytes
;
640 struct scatterlist sgent
;
642 struct scatterlist
*sg
;
644 struct scatterlist
*cursg
;
645 unsigned int cursg_ofs
;
647 unsigned int err_mask
;
648 struct ata_taskfile result_tf
;
649 ata_qc_cb_t complete_fn
;
655 struct ata_port_stats
{
656 unsigned long unhandled_irq
;
657 unsigned long idle_irq
;
658 unsigned long rw_reqbuf
;
661 struct ata_ering_entry
{
663 unsigned int err_mask
;
669 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
673 struct ata_link
*link
;
674 unsigned int devno
; /* 0 or 1 */
675 unsigned int horkage
; /* List of broken features */
676 unsigned long flags
; /* ATA_DFLAG_xxx */
677 struct scsi_device
*sdev
; /* attached SCSI device */
679 #ifdef CONFIG_ATA_ACPI
680 union acpi_object
*gtf_cache
;
681 unsigned int gtf_filter
;
683 #ifdef CONFIG_SATA_ZPODD
687 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
688 u64 n_sectors
; /* size of device, if ATA */
689 u64 n_native_sectors
; /* native size, if ATA */
690 unsigned int class; /* ATA_DEV_xxx */
691 unsigned long unpark_deadline
;
696 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
698 unsigned int multi_count
; /* sectors count for
699 READ/WRITE MULTIPLE */
700 unsigned int max_sectors
; /* per-device max sectors */
701 unsigned int cdb_len
;
703 /* per-dev xfer mask */
704 unsigned long pio_mask
;
705 unsigned long mwdma_mask
;
706 unsigned long udma_mask
;
708 /* for CHS addressing */
709 u16 cylinders
; /* Number of cylinders */
710 u16 heads
; /* Number of heads */
711 u16 sectors
; /* Number of sectors per track */
714 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
715 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
716 } ____cacheline_aligned
;
718 /* DEVSLP Timing Variables from Identify Device Data Log */
719 u8 devslp_timing
[ATA_LOG_DEVSLP_SIZE
];
721 /* NCQ send and receive log subcommand support */
722 u8 ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_SIZE
];
723 u8 ncq_non_data_cmds
[ATA_LOG_NCQ_NON_DATA_SIZE
];
725 /* ZAC zone configuration */
727 u32 zac_zones_optimal_open
;
728 u32 zac_zones_optimal_nonseq
;
729 u32 zac_zones_max_open
;
733 /* ering is CLEAR_END, read comment above CLEAR_END */
734 struct ata_ering ering
;
737 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
738 * cleared to zero on ata_dev_init().
740 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
741 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
744 struct ata_device
*dev
; /* offending device */
745 u32 serror
; /* SError from LLDD */
746 unsigned int err_mask
; /* port-wide err_mask */
747 unsigned int action
; /* ATA_EH_* action mask */
748 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
749 unsigned int flags
; /* ATA_EHI_* flags */
751 unsigned int probe_mask
;
753 char desc
[ATA_EH_DESC_LEN
];
757 struct ata_eh_context
{
758 struct ata_eh_info i
;
759 int tries
[ATA_MAX_DEVICES
];
760 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
761 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
762 unsigned int classes
[ATA_MAX_DEVICES
];
763 unsigned int did_probe_mask
;
764 unsigned int unloaded_mask
;
765 unsigned int saved_ncq_enabled
;
766 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
767 /* timestamp for the last reset attempt or success */
768 unsigned long last_reset
;
771 struct ata_acpi_drive
777 struct ata_acpi_gtm
{
778 struct ata_acpi_drive drive
[2];
784 int pmp
; /* port multiplier port # */
787 unsigned int active_tag
; /* active tag on this link */
788 u32 sactive
; /* active NCQ commands */
790 unsigned int flags
; /* ATA_LFLAG_xxx */
792 u32 saved_scontrol
; /* SControl on probe */
793 unsigned int hw_sata_spd_limit
;
794 unsigned int sata_spd_limit
;
795 unsigned int sata_spd
; /* current SATA PHY speed */
796 enum ata_lpm_policy lpm_policy
;
798 /* record runtime error info, protected by host_set lock */
799 struct ata_eh_info eh_info
;
801 struct ata_eh_context eh_context
;
803 struct ata_device device
[ATA_MAX_DEVICES
];
805 unsigned long last_lpm_change
; /* when last LPM change happened */
807 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
808 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
811 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
812 struct ata_port_operations
*ops
;
814 /* Flags owned by the EH context. Only EH should touch these once the
816 unsigned long flags
; /* ATA_FLAG_xxx */
817 /* Flags that change dynamically, protected by ap->lock */
818 unsigned int pflags
; /* ATA_PFLAG_xxx */
819 unsigned int print_id
; /* user visible unique port ID */
820 unsigned int local_port_no
; /* host local port num */
821 unsigned int port_no
; /* 0 based port no. inside the host */
823 #ifdef CONFIG_ATA_SFF
824 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
825 u8 ctl
; /* cache of ATA control register */
826 u8 last_ctl
; /* Cache last written value */
827 struct ata_link
* sff_pio_task_link
; /* link currently used */
828 struct delayed_work sff_pio_task
;
829 #ifdef CONFIG_ATA_BMDMA
830 struct ata_bmdma_prd
*bmdma_prd
; /* BMDMA SG list */
831 dma_addr_t bmdma_prd_dma
; /* and its DMA mapping */
832 #endif /* CONFIG_ATA_BMDMA */
833 #endif /* CONFIG_ATA_SFF */
835 unsigned int pio_mask
;
836 unsigned int mwdma_mask
;
837 unsigned int udma_mask
;
838 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
840 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
+ 1];
841 unsigned long sas_tag_allocated
; /* for sas tag allocation only */
843 int nr_active_links
; /* #links with active qcs */
844 unsigned int sas_last_tag
; /* track next tag hw expects */
846 struct ata_link link
; /* host default link */
847 struct ata_link
*slave_link
; /* see ata_slave_link_init() */
849 int nr_pmp_links
; /* nr of available PMP links */
850 struct ata_link
*pmp_link
; /* array of PMP links */
851 struct ata_link
*excl_link
; /* for PMP qc exclusion */
853 struct ata_port_stats stats
;
854 struct ata_host
*host
;
858 struct mutex scsi_scan_mutex
;
859 struct delayed_work hotplug_task
;
860 struct work_struct scsi_rescan_task
;
862 unsigned int hsm_task_state
;
865 struct list_head eh_done_q
;
866 wait_queue_head_t eh_wait_q
;
868 struct completion park_req_pending
;
870 pm_message_t pm_mesg
;
871 enum ata_lpm_policy target_lpm_policy
;
873 struct timer_list fastdrain_timer
;
874 unsigned long fastdrain_cnt
;
876 async_cookie_t cookie
;
881 #ifdef CONFIG_ATA_ACPI
882 struct ata_acpi_gtm __acpi_init_gtm
; /* use ata_acpi_init_gtm() */
885 u8 sector_buf
[ATA_SECT_SIZE
] ____cacheline_aligned
;
888 /* The following initializer overrides a method to NULL whether one of
889 * its parent has the method defined or not. This is equivalent to
890 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
891 * expression and thus can't be used as an initializer.
893 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
895 struct ata_port_operations
{
899 int (*qc_defer
)(struct ata_queued_cmd
*qc
);
900 int (*check_atapi_dma
)(struct ata_queued_cmd
*qc
);
901 enum ata_completion_errors (*qc_prep
)(struct ata_queued_cmd
*qc
);
902 unsigned int (*qc_issue
)(struct ata_queued_cmd
*qc
);
903 bool (*qc_fill_rtf
)(struct ata_queued_cmd
*qc
);
906 * Configuration and exception handling
908 int (*cable_detect
)(struct ata_port
*ap
);
909 unsigned long (*mode_filter
)(struct ata_device
*dev
, unsigned long xfer_mask
);
910 void (*set_piomode
)(struct ata_port
*ap
, struct ata_device
*dev
);
911 void (*set_dmamode
)(struct ata_port
*ap
, struct ata_device
*dev
);
912 int (*set_mode
)(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
913 unsigned int (*read_id
)(struct ata_device
*dev
, struct ata_taskfile
*tf
, u16
*id
);
915 void (*dev_config
)(struct ata_device
*dev
);
917 void (*freeze
)(struct ata_port
*ap
);
918 void (*thaw
)(struct ata_port
*ap
);
919 ata_prereset_fn_t prereset
;
920 ata_reset_fn_t softreset
;
921 ata_reset_fn_t hardreset
;
922 ata_postreset_fn_t postreset
;
923 ata_prereset_fn_t pmp_prereset
;
924 ata_reset_fn_t pmp_softreset
;
925 ata_reset_fn_t pmp_hardreset
;
926 ata_postreset_fn_t pmp_postreset
;
927 void (*error_handler
)(struct ata_port
*ap
);
928 void (*lost_interrupt
)(struct ata_port
*ap
);
929 void (*post_internal_cmd
)(struct ata_queued_cmd
*qc
);
930 void (*sched_eh
)(struct ata_port
*ap
);
931 void (*end_eh
)(struct ata_port
*ap
);
936 int (*scr_read
)(struct ata_link
*link
, unsigned int sc_reg
, u32
*val
);
937 int (*scr_write
)(struct ata_link
*link
, unsigned int sc_reg
, u32 val
);
938 void (*pmp_attach
)(struct ata_port
*ap
);
939 void (*pmp_detach
)(struct ata_port
*ap
);
940 int (*set_lpm
)(struct ata_link
*link
, enum ata_lpm_policy policy
,
944 * Start, stop, suspend and resume
946 int (*port_suspend
)(struct ata_port
*ap
, pm_message_t mesg
);
947 int (*port_resume
)(struct ata_port
*ap
);
948 int (*port_start
)(struct ata_port
*ap
);
949 void (*port_stop
)(struct ata_port
*ap
);
950 void (*host_stop
)(struct ata_host
*host
);
952 #ifdef CONFIG_ATA_SFF
954 * SFF / taskfile oriented ops
956 void (*sff_dev_select
)(struct ata_port
*ap
, unsigned int device
);
957 void (*sff_set_devctl
)(struct ata_port
*ap
, u8 ctl
);
958 u8 (*sff_check_status
)(struct ata_port
*ap
);
959 u8 (*sff_check_altstatus
)(struct ata_port
*ap
);
960 void (*sff_tf_load
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
961 void (*sff_tf_read
)(struct ata_port
*ap
, struct ata_taskfile
*tf
);
962 void (*sff_exec_command
)(struct ata_port
*ap
,
963 const struct ata_taskfile
*tf
);
964 unsigned int (*sff_data_xfer
)(struct ata_queued_cmd
*qc
,
965 unsigned char *buf
, unsigned int buflen
, int rw
);
966 void (*sff_irq_on
)(struct ata_port
*);
967 bool (*sff_irq_check
)(struct ata_port
*);
968 void (*sff_irq_clear
)(struct ata_port
*);
969 void (*sff_drain_fifo
)(struct ata_queued_cmd
*qc
);
971 #ifdef CONFIG_ATA_BMDMA
972 void (*bmdma_setup
)(struct ata_queued_cmd
*qc
);
973 void (*bmdma_start
)(struct ata_queued_cmd
*qc
);
974 void (*bmdma_stop
)(struct ata_queued_cmd
*qc
);
975 u8 (*bmdma_status
)(struct ata_port
*ap
);
976 #endif /* CONFIG_ATA_BMDMA */
977 #endif /* CONFIG_ATA_SFF */
979 ssize_t (*em_show
)(struct ata_port
*ap
, char *buf
);
980 ssize_t (*em_store
)(struct ata_port
*ap
, const char *message
,
982 ssize_t (*sw_activity_show
)(struct ata_device
*dev
, char *buf
);
983 ssize_t (*sw_activity_store
)(struct ata_device
*dev
,
984 enum sw_activity val
);
985 ssize_t (*transmit_led_message
)(struct ata_port
*ap
, u32 state
,
991 void (*phy_reset
)(struct ata_port
*ap
);
992 void (*eng_timeout
)(struct ata_port
*ap
);
995 * ->inherits must be the last field and all the preceding
996 * fields must be pointers.
998 const struct ata_port_operations
*inherits
;
1001 struct ata_port_info
{
1002 unsigned long flags
;
1003 unsigned long link_flags
;
1004 unsigned long pio_mask
;
1005 unsigned long mwdma_mask
;
1006 unsigned long udma_mask
;
1007 struct ata_port_operations
*port_ops
;
1012 unsigned short mode
; /* ATA mode */
1013 unsigned short setup
; /* t1 */
1014 unsigned short act8b
; /* t2 for 8-bit I/O */
1015 unsigned short rec8b
; /* t2i for 8-bit I/O */
1016 unsigned short cyc8b
; /* t0 for 8-bit I/O */
1017 unsigned short active
; /* t2 or tD */
1018 unsigned short recover
; /* t2i or tK */
1019 unsigned short dmack_hold
; /* tj */
1020 unsigned short cycle
; /* t0 */
1021 unsigned short udma
; /* t2CYCTYP/2 */
1025 * Core layer - drivers/ata/libata-core.c
1027 extern struct ata_port_operations ata_dummy_port_ops
;
1028 extern const struct ata_port_info ata_dummy_port_info
;
1030 static inline bool ata_is_atapi(u8 prot
)
1032 return prot
& ATA_PROT_FLAG_ATAPI
;
1035 static inline bool ata_is_pio(u8 prot
)
1037 return prot
& ATA_PROT_FLAG_PIO
;
1040 static inline bool ata_is_dma(u8 prot
)
1042 return prot
& ATA_PROT_FLAG_DMA
;
1045 static inline bool ata_is_ncq(u8 prot
)
1047 return prot
& ATA_PROT_FLAG_NCQ
;
1050 static inline bool ata_is_data(u8 prot
)
1052 return prot
& (ATA_PROT_FLAG_PIO
| ATA_PROT_FLAG_DMA
);
1055 static inline int is_multi_taskfile(struct ata_taskfile
*tf
)
1057 return (tf
->command
== ATA_CMD_READ_MULTI
) ||
1058 (tf
->command
== ATA_CMD_WRITE_MULTI
) ||
1059 (tf
->command
== ATA_CMD_READ_MULTI_EXT
) ||
1060 (tf
->command
== ATA_CMD_WRITE_MULTI_EXT
) ||
1061 (tf
->command
== ATA_CMD_WRITE_MULTI_FUA_EXT
);
1064 static inline int ata_port_is_dummy(struct ata_port
*ap
)
1066 return ap
->ops
== &ata_dummy_port_ops
;
1069 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
1070 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
1071 int (*check_ready
)(struct ata_link
*link
));
1072 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
1073 unsigned long deadline
);
1074 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
1076 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
1077 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
1078 const struct ata_port_info
* const * ppi
, int n_ports
);
1079 extern void ata_host_get(struct ata_host
*host
);
1080 extern void ata_host_put(struct ata_host
*host
);
1081 extern int ata_host_start(struct ata_host
*host
);
1082 extern int ata_host_register(struct ata_host
*host
,
1083 struct scsi_host_template
*sht
);
1084 extern int ata_host_activate(struct ata_host
*host
, int irq
,
1085 irq_handler_t irq_handler
, unsigned long irq_flags
,
1086 struct scsi_host_template
*sht
);
1087 extern void ata_host_detach(struct ata_host
*host
);
1088 extern void ata_host_init(struct ata_host
*, struct device
*, struct ata_port_operations
*);
1089 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
1090 extern int ata_scsi_ioctl(struct scsi_device
*dev
, unsigned int cmd
,
1092 #ifdef CONFIG_COMPAT
1093 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
1095 #define ATA_SCSI_COMPAT_IOCTL /* empty */
1097 extern int ata_scsi_queuecmd(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
1098 bool ata_scsi_dma_need_drain(struct request
*rq
);
1099 extern int ata_sas_scsi_ioctl(struct ata_port
*ap
, struct scsi_device
*dev
,
1100 unsigned int cmd
, void __user
*arg
);
1101 extern bool ata_link_online(struct ata_link
*link
);
1102 extern bool ata_link_offline(struct ata_link
*link
);
1104 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
1105 extern void ata_host_resume(struct ata_host
*host
);
1106 extern void ata_sas_port_suspend(struct ata_port
*ap
);
1107 extern void ata_sas_port_resume(struct ata_port
*ap
);
1109 static inline void ata_sas_port_suspend(struct ata_port
*ap
)
1112 static inline void ata_sas_port_resume(struct ata_port
*ap
)
1116 extern int ata_ratelimit(void);
1117 extern void ata_msleep(struct ata_port
*ap
, unsigned int msecs
);
1118 extern u32
ata_wait_register(struct ata_port
*ap
, void __iomem
*reg
, u32 mask
,
1119 u32 val
, unsigned long interval
, unsigned long timeout
);
1120 extern int atapi_cmd_type(u8 opcode
);
1121 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
1122 unsigned long mwdma_mask
, unsigned long udma_mask
);
1123 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
1124 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
1125 unsigned long *udma_mask
);
1126 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
1127 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
1128 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
1129 extern const char *ata_mode_string(unsigned long xfer_mask
);
1130 extern unsigned long ata_id_xfermask(const u16
*id
);
1131 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
1132 extern enum ata_completion_errors
ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
1133 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
1134 unsigned int n_elem
);
1135 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
1136 extern void ata_dev_disable(struct ata_device
*adev
);
1137 extern void ata_id_string(const u16
*id
, unsigned char *s
,
1138 unsigned int ofs
, unsigned int len
);
1139 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
1140 unsigned int ofs
, unsigned int len
);
1141 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
1142 struct ata_taskfile
*tf
, u16
*id
);
1143 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
1144 extern u64
ata_qc_get_active(struct ata_port
*ap
);
1145 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
);
1146 extern int ata_std_bios_param(struct scsi_device
*sdev
,
1147 struct block_device
*bdev
,
1148 sector_t capacity
, int geom
[]);
1149 extern void ata_scsi_unlock_native_capacity(struct scsi_device
*sdev
);
1150 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
1151 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
1152 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
1154 extern int __ata_change_queue_depth(struct ata_port
*ap
, struct scsi_device
*sdev
,
1156 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
1157 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
1158 extern void ata_scsi_port_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
);
1159 extern void ata_scsi_cmd_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
, struct list_head
*eh_q
);
1162 * SATA specific code - drivers/ata/libata-sata.c
1164 #ifdef CONFIG_SATA_HOST
1165 extern const unsigned long sata_deb_timing_normal
[];
1166 extern const unsigned long sata_deb_timing_hotplug
[];
1167 extern const unsigned long sata_deb_timing_long
[];
1169 static inline const unsigned long *
1170 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
1172 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
1173 return sata_deb_timing_hotplug
;
1175 return sata_deb_timing_normal
;
1178 extern int sata_scr_valid(struct ata_link
*link
);
1179 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
1180 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
1181 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
1182 extern int sata_set_spd(struct ata_link
*link
);
1183 extern int sata_link_hardreset(struct ata_link
*link
,
1184 const unsigned long *timing
, unsigned long deadline
,
1185 bool *online
, int (*check_ready
)(struct ata_link
*));
1186 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
1187 unsigned long deadline
);
1188 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1190 static inline const unsigned long *
1191 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
1195 static inline int sata_scr_valid(struct ata_link
*link
) { return 0; }
1196 static inline int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
)
1200 static inline int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
)
1204 static inline int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
)
1208 static inline int sata_set_spd(struct ata_link
*link
) { return -EOPNOTSUPP
; }
1209 static inline int sata_link_hardreset(struct ata_link
*link
,
1210 const unsigned long *timing
,
1211 unsigned long deadline
,
1213 int (*check_ready
)(struct ata_link
*))
1219 static inline int sata_link_resume(struct ata_link
*link
,
1220 const unsigned long *params
,
1221 unsigned long deadline
)
1225 static inline void ata_eh_analyze_ncq_error(struct ata_link
*link
) { }
1227 extern int sata_link_debounce(struct ata_link
*link
,
1228 const unsigned long *params
, unsigned long deadline
);
1229 extern int sata_link_scr_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
1231 extern int ata_slave_link_init(struct ata_port
*ap
);
1232 extern void ata_sas_port_destroy(struct ata_port
*);
1233 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
1234 struct ata_port_info
*, struct Scsi_Host
*);
1235 extern void ata_sas_async_probe(struct ata_port
*ap
);
1236 extern int ata_sas_sync_probe(struct ata_port
*ap
);
1237 extern int ata_sas_port_init(struct ata_port
*);
1238 extern int ata_sas_port_start(struct ata_port
*ap
);
1239 extern int ata_sas_tport_add(struct device
*parent
, struct ata_port
*ap
);
1240 extern void ata_sas_tport_delete(struct ata_port
*ap
);
1241 extern void ata_sas_port_stop(struct ata_port
*ap
);
1242 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
1243 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, struct ata_port
*ap
);
1244 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
1245 u8 pmp
, int is_cmd
, u8
*fis
);
1246 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
1247 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u64 qc_active
);
1248 extern bool sata_lpm_ignore_phy_events(struct ata_link
*link
);
1249 extern int sata_async_notification(struct ata_port
*ap
);
1251 extern int ata_cable_40wire(struct ata_port
*ap
);
1252 extern int ata_cable_80wire(struct ata_port
*ap
);
1253 extern int ata_cable_sata(struct ata_port
*ap
);
1254 extern int ata_cable_ignore(struct ata_port
*ap
);
1255 extern int ata_cable_unknown(struct ata_port
*ap
);
1257 /* Timing helpers */
1258 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
1259 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
1266 unsigned int reg
; /* PCI config register to read */
1267 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1272 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1273 extern void ata_pci_shutdown_one(struct pci_dev
*pdev
);
1274 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1277 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1278 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1279 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1280 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1281 #endif /* CONFIG_PM */
1282 #endif /* CONFIG_PCI */
1284 struct platform_device
;
1286 extern int ata_platform_remove_one(struct platform_device
*pdev
);
1289 * ACPI - drivers/ata/libata-acpi.c
1291 #ifdef CONFIG_ATA_ACPI
1292 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1294 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1295 return &ap
->__acpi_init_gtm
;
1298 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1299 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1300 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1301 const struct ata_acpi_gtm
*gtm
);
1302 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1304 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1309 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1310 struct ata_acpi_gtm
*stm
)
1315 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1316 struct ata_acpi_gtm
*stm
)
1321 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1322 const struct ata_acpi_gtm
*gtm
)
1327 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1328 const struct ata_acpi_gtm
*gtm
)
1335 * EH - drivers/ata/libata-eh.c
1337 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1338 extern void ata_port_wait_eh(struct ata_port
*ap
);
1339 extern int ata_link_abort(struct ata_link
*link
);
1340 extern int ata_port_abort(struct ata_port
*ap
);
1341 extern int ata_port_freeze(struct ata_port
*ap
);
1343 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1344 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1346 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1347 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1349 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1350 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1351 ata_postreset_fn_t postreset
);
1352 extern void ata_std_error_handler(struct ata_port
*ap
);
1353 extern void ata_std_sched_eh(struct ata_port
*ap
);
1354 extern void ata_std_end_eh(struct ata_port
*ap
);
1355 extern int ata_link_nr_enabled(struct ata_link
*link
);
1358 * Base operations to inherit from and initializers for sht
1362 * base : Common to all libata drivers.
1363 * sata : SATA controllers w/ native interface.
1364 * pmp : SATA controllers w/ PMP support.
1365 * sff : SFF ATA controllers w/o BMDMA support.
1366 * bmdma : SFF ATA controllers w/ BMDMA support.
1370 * BASE : Common to all libata drivers. The user must set
1371 * sg_tablesize and dma_boundary.
1372 * PIO : SFF ATA controllers w/ only PIO support.
1373 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1374 * dma_boundary are set to BMDMA limits.
1375 * NCQ : SATA controllers supporting NCQ. The user must set
1376 * sg_tablesize, dma_boundary and can_queue.
1378 extern const struct ata_port_operations ata_base_port_ops
;
1379 extern const struct ata_port_operations sata_port_ops
;
1380 extern struct device_attribute
*ata_common_sdev_attrs
[];
1383 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1384 * by the edge drivers. Because the 'module' field of sht must be the
1385 * edge driver's module reference, otherwise the driver can be unloaded
1386 * even if the scsi_device is being accessed.
1388 #define __ATA_BASE_SHT(drv_name) \
1389 .module = THIS_MODULE, \
1391 .ioctl = ata_scsi_ioctl, \
1392 ATA_SCSI_COMPAT_IOCTL \
1393 .queuecommand = ata_scsi_queuecmd, \
1394 .dma_need_drain = ata_scsi_dma_need_drain, \
1395 .can_queue = ATA_DEF_QUEUE, \
1396 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1397 .this_id = ATA_SHT_THIS_ID, \
1398 .emulated = ATA_SHT_EMULATED, \
1399 .proc_name = drv_name, \
1400 .slave_configure = ata_scsi_slave_config, \
1401 .slave_destroy = ata_scsi_slave_destroy, \
1402 .bios_param = ata_std_bios_param, \
1403 .unlock_native_capacity = ata_scsi_unlock_native_capacity
1405 #define ATA_BASE_SHT(drv_name) \
1406 __ATA_BASE_SHT(drv_name), \
1407 .sdev_attrs = ata_common_sdev_attrs
1409 #ifdef CONFIG_SATA_HOST
1410 extern struct device_attribute
*ata_ncq_sdev_attrs
[];
1412 #define ATA_NCQ_SHT(drv_name) \
1413 __ATA_BASE_SHT(drv_name), \
1414 .sdev_attrs = ata_ncq_sdev_attrs, \
1415 .change_queue_depth = ata_scsi_change_queue_depth
1421 #ifdef CONFIG_SATA_PMP
1422 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1424 return ap
->flags
& ATA_FLAG_PMP
;
1427 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1429 return ap
->nr_pmp_links
!= 0;
1432 static inline bool ata_is_host_link(const struct ata_link
*link
)
1434 return link
== &link
->ap
->link
|| link
== link
->ap
->slave_link
;
1436 #else /* CONFIG_SATA_PMP */
1437 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1442 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1447 static inline bool ata_is_host_link(const struct ata_link
*link
)
1451 #endif /* CONFIG_SATA_PMP */
1453 static inline int sata_srst_pmp(struct ata_link
*link
)
1455 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1456 return SATA_PMP_CTRL_PORT
;
1464 void ata_port_printk(const struct ata_port
*ap
, const char *level
,
1465 const char *fmt
, ...);
1467 void ata_link_printk(const struct ata_link
*link
, const char *level
,
1468 const char *fmt
, ...);
1470 void ata_dev_printk(const struct ata_device
*dev
, const char *level
,
1471 const char *fmt
, ...);
1473 #define ata_port_err(ap, fmt, ...) \
1474 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1475 #define ata_port_warn(ap, fmt, ...) \
1476 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1477 #define ata_port_notice(ap, fmt, ...) \
1478 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1479 #define ata_port_info(ap, fmt, ...) \
1480 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1481 #define ata_port_dbg(ap, fmt, ...) \
1482 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1484 #define ata_link_err(link, fmt, ...) \
1485 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1486 #define ata_link_warn(link, fmt, ...) \
1487 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1488 #define ata_link_notice(link, fmt, ...) \
1489 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1490 #define ata_link_info(link, fmt, ...) \
1491 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1492 #define ata_link_dbg(link, fmt, ...) \
1493 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1495 #define ata_dev_err(dev, fmt, ...) \
1496 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1497 #define ata_dev_warn(dev, fmt, ...) \
1498 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1499 #define ata_dev_notice(dev, fmt, ...) \
1500 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1501 #define ata_dev_info(dev, fmt, ...) \
1502 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1503 #define ata_dev_dbg(dev, fmt, ...) \
1504 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1506 void ata_print_version(const struct device
*dev
, const char *version
);
1509 * ata_eh_info helpers
1511 extern __printf(2, 3)
1512 void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1513 extern __printf(2, 3)
1514 void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1515 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1517 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1519 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1520 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1521 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1522 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1526 * port description helpers
1528 extern __printf(2, 3)
1529 void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...);
1531 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1535 static inline bool ata_tag_internal(unsigned int tag
)
1537 return tag
== ATA_TAG_INTERNAL
;
1540 static inline bool ata_tag_valid(unsigned int tag
)
1542 return tag
< ATA_MAX_QUEUE
|| ata_tag_internal(tag
);
1545 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1546 for ((tag) = 0; (tag) < (max_tag) && \
1547 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1550 * Internal use only, iterate commands ignoring error handling and
1553 #define ata_qc_for_each_raw(ap, qc, tag) \
1554 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1557 * Iterate all potential commands that can be queued
1559 #define ata_qc_for_each(ap, qc, tag) \
1560 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1563 * Like ata_qc_for_each, but with the internal tag included
1565 #define ata_qc_for_each_with_internal(ap, qc, tag) \
1566 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1571 static inline unsigned int ata_class_enabled(unsigned int class)
1573 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1574 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
||
1575 class == ATA_DEV_ZAC
;
1578 static inline unsigned int ata_class_disabled(unsigned int class)
1580 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1581 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
||
1582 class == ATA_DEV_ZAC_UNSUP
;
1585 static inline unsigned int ata_class_absent(unsigned int class)
1587 return !ata_class_enabled(class) && !ata_class_disabled(class);
1590 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1592 return ata_class_enabled(dev
->class);
1595 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1597 return ata_class_disabled(dev
->class);
1600 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1602 return ata_class_absent(dev
->class);
1608 static inline int ata_link_max_devices(const struct ata_link
*link
)
1610 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1615 static inline int ata_link_active(struct ata_link
*link
)
1617 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1623 * ATA_LITER_* constants are used to select link iteration mode and
1624 * ATA_DITER_* device iteration mode.
1626 * For a custom iteration directly using ata_{link|dev}_next(), if
1627 * @link or @dev, respectively, is NULL, the first element is
1628 * returned. @dev and @link can be any valid device or link and the
1629 * next element according to the iteration mode will be returned.
1630 * After the last element, NULL is returned.
1632 enum ata_link_iter_mode
{
1633 ATA_LITER_EDGE
, /* if present, PMP links only; otherwise,
1634 * host link. no slave link */
1635 ATA_LITER_HOST_FIRST
, /* host link followed by PMP or slave links */
1636 ATA_LITER_PMP_FIRST
, /* PMP links followed by host link,
1637 * slave link still comes after host link */
1640 enum ata_dev_iter_mode
{
1642 ATA_DITER_ENABLED_REVERSE
,
1644 ATA_DITER_ALL_REVERSE
,
1647 extern struct ata_link
*ata_link_next(struct ata_link
*link
,
1648 struct ata_port
*ap
,
1649 enum ata_link_iter_mode mode
);
1651 extern struct ata_device
*ata_dev_next(struct ata_device
*dev
,
1652 struct ata_link
*link
,
1653 enum ata_dev_iter_mode mode
);
1656 * Shortcut notation for iterations
1658 * ata_for_each_link() iterates over each link of @ap according to
1659 * @mode. @link points to the current link in the loop. @link is
1660 * NULL after loop termination. ata_for_each_dev() works the same way
1661 * except that it iterates over each device of @link.
1663 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1664 * specified when using the following shorthand notations. Only the
1665 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1666 * specified. This not only increases brevity but also makes it
1667 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1669 #define ata_for_each_link(link, ap, mode) \
1670 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1671 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1673 #define ata_for_each_dev(dev, link, mode) \
1674 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1675 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1678 * ata_ncq_enabled - Test whether NCQ is enabled
1679 * @dev: ATA device to test for
1682 * spin_lock_irqsave(host lock)
1685 * 1 if NCQ is enabled for @dev, 0 otherwise.
1687 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1689 if (!IS_ENABLED(CONFIG_SATA_HOST
))
1691 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1692 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1695 static inline bool ata_fpdma_dsm_supported(struct ata_device
*dev
)
1697 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1698 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET
] &
1699 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM
);
1702 static inline bool ata_fpdma_read_log_supported(struct ata_device
*dev
)
1704 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1705 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET
] &
1706 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED
);
1709 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device
*dev
)
1711 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1712 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET
] &
1713 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED
);
1716 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device
*dev
)
1718 return (dev
->ncq_non_data_cmds
[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET
] &
1719 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT
);
1722 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1724 qc
->tf
.ctl
|= ATA_NIEN
;
1727 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1730 if (ata_tag_valid(tag
))
1731 return &ap
->qcmd
[tag
];
1735 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1738 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1740 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1743 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1744 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1750 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1752 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1755 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1757 memset(tf
, 0, sizeof(*tf
));
1759 #ifdef CONFIG_ATA_SFF
1760 tf
->ctl
= dev
->link
->ap
->ctl
;
1762 tf
->ctl
= ATA_DEVCTL_OBS
;
1764 if (dev
->devno
== 0)
1765 tf
->device
= ATA_DEVICE_OBS
;
1767 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1770 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1772 qc
->dma_dir
= DMA_NONE
;
1777 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1780 qc
->sect_size
= ATA_SECT_SIZE
;
1782 ata_tf_init(qc
->dev
, &qc
->tf
);
1784 /* init result_tf such that it indicates normal completion */
1785 qc
->result_tf
.command
= ATA_DRDY
;
1786 qc
->result_tf
.feature
= 0;
1789 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1791 return ata_id_wcache_enabled(dev
->id
) ||
1792 ata_id_has_flush(dev
->id
) ||
1793 ata_id_has_flush_ext(dev
->id
);
1796 static inline unsigned int ac_err_mask(u8 status
)
1798 if (status
& (ATA_BUSY
| ATA_DRQ
))
1800 if (status
& (ATA_ERR
| ATA_DF
))
1805 static inline unsigned int __ac_err_mask(u8 status
)
1807 unsigned int mask
= ac_err_mask(status
);
1809 return AC_ERR_OTHER
;
1813 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1815 return *(struct ata_port
**)&host
->hostdata
[0];
1818 static inline int ata_check_ready(u8 status
)
1820 if (!(status
& ATA_BUSY
))
1823 /* 0xff indicates either no device or device not ready */
1830 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1831 unsigned long timeout_msecs
)
1833 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1836 /* Don't open code these in drivers as there are traps. Firstly the range may
1837 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1838 > UDMA_0. Dyma ddreigiau */
1840 static inline int ata_using_mwdma(struct ata_device
*adev
)
1842 if (adev
->dma_mode
>= XFER_MW_DMA_0
&& adev
->dma_mode
<= XFER_MW_DMA_4
)
1847 static inline int ata_using_udma(struct ata_device
*adev
)
1849 if (adev
->dma_mode
>= XFER_UDMA_0
&& adev
->dma_mode
<= XFER_UDMA_7
)
1854 static inline int ata_dma_enabled(struct ata_device
*adev
)
1856 return (adev
->dma_mode
== 0xFF ? 0 : 1);
1859 /**************************************************************************
1860 * PATA timings - drivers/ata/libata-pata-timings.c
1862 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
1863 extern int ata_timing_compute(struct ata_device
*, unsigned short,
1864 struct ata_timing
*, int, int);
1865 extern void ata_timing_merge(const struct ata_timing
*,
1866 const struct ata_timing
*, struct ata_timing
*,
1869 /**************************************************************************
1870 * PMP - drivers/ata/libata-pmp.c
1872 #ifdef CONFIG_SATA_PMP
1874 extern const struct ata_port_operations sata_pmp_port_ops
;
1876 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1877 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1879 #else /* CONFIG_SATA_PMP */
1881 #define sata_pmp_port_ops sata_port_ops
1882 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1883 #define sata_pmp_error_handler ata_std_error_handler
1885 #endif /* CONFIG_SATA_PMP */
1888 /**************************************************************************
1889 * SFF - drivers/ata/libata-sff.c
1891 #ifdef CONFIG_ATA_SFF
1893 extern const struct ata_port_operations ata_sff_port_ops
;
1894 extern const struct ata_port_operations ata_bmdma32_port_ops
;
1896 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1897 #define ATA_PIO_SHT(drv_name) \
1898 ATA_BASE_SHT(drv_name), \
1899 .sg_tablesize = LIBATA_MAX_PRD, \
1900 .dma_boundary = ATA_DMA_BOUNDARY
1902 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1903 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1904 extern void ata_sff_pause(struct ata_port
*ap
);
1905 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1906 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1907 unsigned long timeout_pat
, unsigned long timeout
);
1908 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1909 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1910 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1911 extern void ata_sff_exec_command(struct ata_port
*ap
,
1912 const struct ata_taskfile
*tf
);
1913 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd
*qc
,
1914 unsigned char *buf
, unsigned int buflen
, int rw
);
1915 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd
*qc
,
1916 unsigned char *buf
, unsigned int buflen
, int rw
);
1917 extern void ata_sff_irq_on(struct ata_port
*ap
);
1918 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1919 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1920 u8 status
, int in_wq
);
1921 extern void ata_sff_queue_work(struct work_struct
*work
);
1922 extern void ata_sff_queue_delayed_work(struct delayed_work
*dwork
,
1923 unsigned long delay
);
1924 extern void ata_sff_queue_pio_task(struct ata_link
*link
, unsigned long delay
);
1925 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1926 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1927 extern unsigned int ata_sff_port_intr(struct ata_port
*ap
,
1928 struct ata_queued_cmd
*qc
);
1929 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1930 extern void ata_sff_lost_interrupt(struct ata_port
*ap
);
1931 extern void ata_sff_freeze(struct ata_port
*ap
);
1932 extern void ata_sff_thaw(struct ata_port
*ap
);
1933 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1934 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1936 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1937 unsigned long deadline
);
1938 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1939 unsigned long deadline
);
1940 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1941 unsigned long deadline
);
1942 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1943 extern void ata_sff_drain_fifo(struct ata_queued_cmd
*qc
);
1944 extern void ata_sff_error_handler(struct ata_port
*ap
);
1945 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1947 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1948 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1949 const struct ata_port_info
* const * ppi
,
1950 struct ata_host
**r_host
);
1951 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1952 irq_handler_t irq_handler
,
1953 struct scsi_host_template
*sht
);
1954 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1955 const struct ata_port_info
* const * ppi
,
1956 struct scsi_host_template
*sht
, void *host_priv
, int hflags
);
1957 #endif /* CONFIG_PCI */
1959 #ifdef CONFIG_ATA_BMDMA
1961 extern const struct ata_port_operations ata_bmdma_port_ops
;
1963 #define ATA_BMDMA_SHT(drv_name) \
1964 ATA_BASE_SHT(drv_name), \
1965 .sg_tablesize = LIBATA_MAX_PRD, \
1966 .dma_boundary = ATA_DMA_BOUNDARY
1968 extern enum ata_completion_errors
ata_bmdma_qc_prep(struct ata_queued_cmd
*qc
);
1969 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd
*qc
);
1970 extern enum ata_completion_errors
ata_bmdma_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1971 extern unsigned int ata_bmdma_port_intr(struct ata_port
*ap
,
1972 struct ata_queued_cmd
*qc
);
1973 extern irqreturn_t
ata_bmdma_interrupt(int irq
, void *dev_instance
);
1974 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
1975 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
1976 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
1977 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1978 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1979 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1980 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1981 extern int ata_bmdma_port_start(struct ata_port
*ap
);
1982 extern int ata_bmdma_port_start32(struct ata_port
*ap
);
1985 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1986 extern void ata_pci_bmdma_init(struct ata_host
*host
);
1987 extern int ata_pci_bmdma_prepare_host(struct pci_dev
*pdev
,
1988 const struct ata_port_info
* const * ppi
,
1989 struct ata_host
**r_host
);
1990 extern int ata_pci_bmdma_init_one(struct pci_dev
*pdev
,
1991 const struct ata_port_info
* const * ppi
,
1992 struct scsi_host_template
*sht
,
1993 void *host_priv
, int hflags
);
1994 #endif /* CONFIG_PCI */
1995 #endif /* CONFIG_ATA_BMDMA */
1998 * ata_sff_busy_wait - Wait for a port status register
1999 * @ap: Port to wait for.
2000 * @bits: bits that must be clear
2001 * @max: number of 10uS waits to perform
2003 * Waits up to max*10 microseconds for the selected bits in the port's
2004 * status register to be cleared.
2005 * Returns final value of status register.
2008 * Inherited from caller.
2010 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
2017 status
= ap
->ops
->sff_check_status(ap
);
2019 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
2025 * ata_wait_idle - Wait for a port to be idle.
2026 * @ap: Port to wait for.
2028 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
2029 * Returns final value of status register.
2032 * Inherited from caller.
2034 static inline u8
ata_wait_idle(struct ata_port
*ap
)
2036 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
2039 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
2040 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
2046 #endif /* CONFIG_ATA_SFF */
2048 #endif /* __LINUX_LIBATA_H__ */