2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
26 #ifndef __LINUX_LIBATA_H__
27 #define __LINUX_LIBATA_H__
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>
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>
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
46 #ifdef CONFIG_ATA_NONSTANDARD
47 #include <asm/libata-portmap.h>
49 #include <asm-generic/libata-portmap.h>
53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
56 #undef ATA_DEBUG /* debugging output */
57 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59 #undef ATA_NDEBUG /* define to disable quick runtime checks */
62 /* note: prints function name for you */
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)
68 #define VPRINTK(fmt, args...)
69 #endif /* ATA_VERBOSE_DEBUG */
71 #define DPRINTK(fmt, args...)
72 #define VPRINTK(fmt, args...)
73 #endif /* ATA_DEBUG */
75 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
77 #define ata_print_version_once(dev, version) \
79 static bool __print_once; \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
87 /* NEW: debug levels */
88 #define HAVE_LIBATA_MSG 1
92 ATA_MSG_INFO
= 0x0002,
93 ATA_MSG_PROBE
= 0x0004,
94 ATA_MSG_WARN
= 0x0008,
95 ATA_MSG_MALLOC
= 0x0010,
97 ATA_MSG_INTR
= 0x0040,
101 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
110 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
112 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
113 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
116 return (1 << dval
) - 1;
119 /* defines only for the constants which don't work well as enums */
120 #define ATA_TAG_POISON 0xfafbfcfdU
123 /* various global constants */
124 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
125 LIBATA_DUMB_MAX_PRD
= ATA_MAX_PRD
/ 4, /* Worst case */
127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
129 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
- 1,
130 ATA_SHORT_PAUSE
= 16,
132 ATAPI_MAX_DRAIN
= 16 << 10,
134 ATA_ALL_DEVICES
= (1 << ATA_MAX_DEVICES
) - 1,
136 ATA_SHT_EMULATED
= 1,
137 ATA_SHT_THIS_ID
= -1,
138 ATA_SHT_USE_CLUSTERING
= 1,
140 /* struct ata_taskfile flags */
141 ATA_TFLAG_LBA48
= (1 << 0), /* enable 48-bit LBA and "HOB" */
142 ATA_TFLAG_ISADDR
= (1 << 1), /* enable r/w to nsect/lba regs */
143 ATA_TFLAG_DEVICE
= (1 << 2), /* enable r/w to device reg */
144 ATA_TFLAG_WRITE
= (1 << 3), /* data dir: host->dev==1 (write) */
145 ATA_TFLAG_LBA
= (1 << 4), /* enable LBA */
146 ATA_TFLAG_FUA
= (1 << 5), /* enable FUA */
147 ATA_TFLAG_POLLING
= (1 << 6), /* set nIEN to 1 and use polling */
150 ATA_PROT_FLAG_PIO
= (1 << 0), /* is PIO */
151 ATA_PROT_FLAG_DMA
= (1 << 1), /* is DMA */
152 ATA_PROT_FLAG_DATA
= ATA_PROT_FLAG_PIO
| ATA_PROT_FLAG_DMA
,
153 ATA_PROT_FLAG_NCQ
= (1 << 2), /* is NCQ */
154 ATA_PROT_FLAG_ATAPI
= (1 << 3), /* is ATAPI */
156 /* struct ata_device stuff */
157 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
158 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
159 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
160 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
161 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
162 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
163 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
164 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
165 ATA_DFLAG_DMADIR
= (1 << 10), /* device requires DMADIR */
166 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
168 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
169 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
170 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
171 ATA_DFLAG_DUBIOUS_XFER
= (1 << 16), /* data transfer not verified */
172 ATA_DFLAG_NO_UNLOAD
= (1 << 17), /* device doesn't support unload */
173 ATA_DFLAG_UNLOCK_HPA
= (1 << 18), /* unlock HPA */
174 ATA_DFLAG_NCQ_SEND_RECV
= (1 << 19), /* device supports NCQ SEND and RECV */
175 ATA_DFLAG_INIT_MASK
= (1 << 24) - 1,
177 ATA_DFLAG_DETACH
= (1 << 24),
178 ATA_DFLAG_DETACHED
= (1 << 25),
180 ATA_DFLAG_DA
= (1 << 26), /* device supports Device Attention */
181 ATA_DFLAG_DEVSLP
= (1 << 27), /* device supports Device Sleep */
182 ATA_DFLAG_ACPI_DISABLED
= (1 << 28), /* ACPI for the device is disabled */
184 ATA_DEV_UNKNOWN
= 0, /* unknown device */
185 ATA_DEV_ATA
= 1, /* ATA device */
186 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
187 ATA_DEV_ATAPI
= 3, /* ATAPI device */
188 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
189 ATA_DEV_PMP
= 5, /* SATA port multiplier */
190 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
191 ATA_DEV_SEMB
= 7, /* SEMB */
192 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
193 ATA_DEV_ZAC
= 9, /* ZAC device */
194 ATA_DEV_NONE
= 10, /* no device */
196 /* struct ata_link flags */
197 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
198 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
199 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
200 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
201 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
202 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
203 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
204 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
205 ATA_LFLAG_NO_LPM
= (1 << 8), /* disable LPM on this link */
206 ATA_LFLAG_RST_ONCE
= (1 << 9), /* limit recovery to one reset */
207 ATA_LFLAG_CHANGED
= (1 << 10), /* LPM state changed on this link */
209 /* struct ata_port flags */
210 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
211 /* (doesn't imply presence) */
212 ATA_FLAG_SATA
= (1 << 1),
213 ATA_FLAG_NO_LOG_PAGE
= (1 << 5), /* do not issue log page read */
214 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
215 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
216 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
217 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
218 * doesn't handle PIO interrupts */
219 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
220 ATA_FLAG_NO_POWEROFF_SPINDOWN
= (1 << 11), /* don't spindown before poweroff */
221 ATA_FLAG_NO_HIBERNATE_SPINDOWN
= (1 << 12), /* don't spindown before hibernation */
222 ATA_FLAG_DEBUGMSG
= (1 << 13),
223 ATA_FLAG_FPDMA_AA
= (1 << 14), /* driver supports Auto-Activate */
224 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
225 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
226 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
227 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
228 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
229 ATA_FLAG_FPDMA_AUX
= (1 << 20), /* controller supports H2DFIS aux field */
230 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
232 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
234 ATA_FLAG_NO_DIPM
= (1 << 23), /* host not happy with DIPM */
235 ATA_FLAG_SAS_HOST
= (1 << 24), /* SAS host */
237 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
240 /* struct ata_port pflags */
241 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
242 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
243 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
244 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
245 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
246 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
247 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
248 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
249 ATA_PFLAG_UNLOADING
= (1 << 9), /* driver is being unloaded */
250 ATA_PFLAG_UNLOADED
= (1 << 10), /* driver is unloaded */
252 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
253 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
254 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
256 ATA_PFLAG_PIO32
= (1 << 20), /* 32bit PIO */
257 ATA_PFLAG_PIO32CHANGE
= (1 << 21), /* 32bit PIO can be turned on/off */
258 ATA_PFLAG_EXTERNAL
= (1 << 22), /* eSATA/external port */
260 /* struct ata_queued_cmd flags */
261 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
262 ATA_QCFLAG_DMAMAP
= (1 << 1), /* SG table is DMA mapped */
263 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
264 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
265 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
266 ATA_QCFLAG_QUIET
= (1 << 6), /* don't report device error */
267 ATA_QCFLAG_RETRY
= (1 << 7), /* retry after failure */
269 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
270 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
271 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
274 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
275 ATA_HOST_STARTED
= (1 << 1), /* Host started */
276 ATA_HOST_PARALLEL_SCAN
= (1 << 2), /* Ports on this host can be scanned in parallel */
277 ATA_HOST_IGNORE_ATA
= (1 << 3), /* Ignore ATA devices on this host. */
279 /* bits 24:31 of host->flags are reserved for LLD specific flags */
281 /* various lengths of time */
282 ATA_TMOUT_BOOT
= 30000, /* heuristic */
283 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
284 ATA_TMOUT_INTERNAL_QUICK
= 5000,
285 ATA_TMOUT_MAX_PARK
= 30000,
288 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
289 * is too much without parallel probing. Use 2s if parallel
290 * probing is available, 800ms otherwise.
292 ATA_TMOUT_FF_WAIT_LONG
= 2000,
293 ATA_TMOUT_FF_WAIT
= 800,
295 /* Spec mandates to wait for ">= 2ms" before checking status
296 * after reset. We wait 150ms, because that was the magic
297 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
298 * the period of time between when the ATA command register is
299 * written, and then status is checked. Because waiting for
300 * "a while" before checking status is fine, post SRST, we
301 * perform this magic delay here as well.
303 * Old drivers/ide uses the 2mS rule and then waits for ready.
305 ATA_WAIT_AFTER_RESET
= 150,
307 /* If PMP is supported, we have to do follow-up SRST. As some
308 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
309 * advised to wait only for the following duration before
312 ATA_TMOUT_PMP_SRST_WAIT
= 5000,
314 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
315 * be a spurious PHY event, so ignore the first PHY event that
316 * occurs within 10s after the policy change.
318 ATA_TMOUT_SPURIOUS_PHY
= 10000,
332 /* SATA port states */
337 /* encoding various smaller bitmaps into a single
338 * unsigned long bitmap
340 ATA_NR_PIO_MODES
= 7,
341 ATA_NR_MWDMA_MODES
= 5,
342 ATA_NR_UDMA_MODES
= 8,
345 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
346 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
348 /* size of buffer to pad xfers ending on unaligned boundaries */
354 /* return values for ->qc_defer */
358 /* desc_len for ata_eh_info and context */
359 ATA_EH_DESC_LEN
= 80,
361 /* reset / recovery action types */
362 ATA_EH_REVALIDATE
= (1 << 0),
363 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
364 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
365 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
366 ATA_EH_ENABLE_LINK
= (1 << 3),
367 ATA_EH_PARK
= (1 << 5), /* unload heads and stop I/O */
369 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
| ATA_EH_PARK
,
370 ATA_EH_ALL_ACTIONS
= ATA_EH_REVALIDATE
| ATA_EH_RESET
|
373 /* ata_eh_info->flags */
374 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
375 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
376 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
377 ATA_EHI_NO_RECOVERY
= (1 << 4), /* no recovery */
379 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
380 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
381 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
382 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
383 ATA_EHI_POST_SETMODE
= (1 << 20), /* revalidating after setmode */
385 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
387 /* mask of flags to transfer *to* the slave link */
388 ATA_EHI_TO_SLAVE_MASK
= ATA_EHI_NO_AUTOPSY
| ATA_EHI_QUIET
,
390 /* max tries if error condition is still set after ->error_handler */
391 ATA_EH_MAX_TRIES
= 5,
393 /* sometimes resuming a link requires several retries */
394 ATA_LINK_RESUME_TRIES
= 5,
396 /* how hard are we gonna try to probe/recover devices */
397 ATA_PROBE_MAX_TRIES
= 3,
398 ATA_EH_DEV_TRIES
= 3,
399 ATA_EH_PMP_TRIES
= 5,
400 ATA_EH_PMP_LINK_TRIES
= 3,
402 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
404 /* This should match the actual table size of
405 * ata_eh_cmd_timeout_table in libata-eh.c.
407 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 6,
409 /* Horkage types. May be set by libata or controller on drives
410 (some horkage may be drive/controller pair dependent */
412 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
413 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
414 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
415 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
416 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
417 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
418 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
419 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
420 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
421 ATA_HORKAGE_BRIDGE_OK
= (1 << 10), /* no bridge limits */
422 ATA_HORKAGE_ATAPI_MOD16_DMA
= (1 << 11), /* use ATAPI DMA for commands
423 not multiple of 16 bytes */
424 ATA_HORKAGE_FIRMWARE_WARN
= (1 << 12), /* firmware update warning */
425 ATA_HORKAGE_1_5_GBPS
= (1 << 13), /* force 1.5 Gbps */
426 ATA_HORKAGE_NOSETXFER
= (1 << 14), /* skip SETXFER, SATA only */
427 ATA_HORKAGE_BROKEN_FPDMA_AA
= (1 << 15), /* skip AA */
428 ATA_HORKAGE_DUMP_ID
= (1 << 16), /* dump IDENTIFY data */
429 ATA_HORKAGE_MAX_SEC_LBA48
= (1 << 17), /* Set max sects to 65535 */
430 ATA_HORKAGE_ATAPI_DMADIR
= (1 << 18), /* device requires dmadir */
431 ATA_HORKAGE_NO_NCQ_TRIM
= (1 << 19), /* don't use queued TRIM */
432 ATA_HORKAGE_NOLPM
= (1 << 20), /* don't use LPM */
433 ATA_HORKAGE_WD_BROKEN_LPM
= (1 << 21), /* some WDs have broken LPM */
434 ATA_HORKAGE_ZERO_AFTER_TRIM
= (1 << 22),/* guarantees zero after trim */
435 ATA_HORKAGE_NO_NCQ_LOG
= (1 << 23), /* don't use NCQ for log read */
436 ATA_HORKAGE_NOTRIM
= (1 << 24), /* don't use TRIM */
437 ATA_HORKAGE_MAX_SEC_1024
= (1 << 25), /* Limit max sects to 1024 */
439 /* DMA mask for user DMA control: User visible values; DO NOT
441 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
442 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
443 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
445 /* ATAPI command types */
446 ATAPI_READ
= 0, /* READs */
447 ATAPI_WRITE
= 1, /* WRITEs */
448 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
449 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
450 ATAPI_MISC
= 4, /* the rest */
452 /* Timing constants */
453 ATA_TIMING_SETUP
= (1 << 0),
454 ATA_TIMING_ACT8B
= (1 << 1),
455 ATA_TIMING_REC8B
= (1 << 2),
456 ATA_TIMING_CYC8B
= (1 << 3),
457 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
459 ATA_TIMING_ACTIVE
= (1 << 4),
460 ATA_TIMING_RECOVER
= (1 << 5),
461 ATA_TIMING_DMACK_HOLD
= (1 << 6),
462 ATA_TIMING_CYCLE
= (1 << 7),
463 ATA_TIMING_UDMA
= (1 << 8),
464 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
465 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
466 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
467 ATA_TIMING_DMACK_HOLD
| ATA_TIMING_CYCLE
|
471 ATA_ACPI_FILTER_SETXFER
= 1 << 0,
472 ATA_ACPI_FILTER_LOCK
= 1 << 1,
473 ATA_ACPI_FILTER_DIPM
= 1 << 2,
474 ATA_ACPI_FILTER_FPDMA_OFFSET
= 1 << 3, /* FPDMA non-zero offset */
475 ATA_ACPI_FILTER_FPDMA_AA
= 1 << 4, /* FPDMA auto activate */
477 ATA_ACPI_FILTER_DEFAULT
= ATA_ACPI_FILTER_SETXFER
|
478 ATA_ACPI_FILTER_LOCK
|
479 ATA_ACPI_FILTER_DIPM
,
483 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
485 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
487 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
491 enum hsm_task_states
{
492 HSM_ST_IDLE
, /* no command on going */
493 HSM_ST_FIRST
, /* (waiting the device to)
494 write CDB or first data block */
495 HSM_ST
, /* (waiting the device to) transfer data */
496 HSM_ST_LAST
, /* (waiting the device to) complete command */
497 HSM_ST_ERR
, /* error */
500 enum ata_completion_errors
{
501 AC_ERR_DEV
= (1 << 0), /* device reported error */
502 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
503 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
504 AC_ERR_MEDIA
= (1 << 3), /* media error */
505 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
506 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
507 AC_ERR_SYSTEM
= (1 << 6), /* system error */
508 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
509 AC_ERR_OTHER
= (1 << 8), /* unknown */
510 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
511 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
515 * Link power management policy: If you alter this, you also need to
516 * alter libata-scsi.c (for the ascii descriptions)
518 enum ata_lpm_policy
{
526 ATA_LPM_EMPTY
= (1 << 0), /* port empty/probing */
527 ATA_LPM_HIPM
= (1 << 1), /* may use HIPM */
530 /* forward declarations */
532 struct ata_port_operations
;
535 struct ata_queued_cmd
;
538 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
539 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
540 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
541 unsigned long deadline
);
542 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
544 extern struct device_attribute dev_attr_link_power_management_policy
;
545 extern struct device_attribute dev_attr_unload_heads
;
546 extern struct device_attribute dev_attr_em_message_type
;
547 extern struct device_attribute dev_attr_em_message
;
548 extern struct device_attribute dev_attr_sw_activity
;
556 struct ata_taskfile
{
557 unsigned long flags
; /* ATA_TFLAG_xxx */
558 u8 protocol
; /* ATA_PROT_xxx */
560 u8 ctl
; /* control reg */
562 u8 hob_feature
; /* additional data */
563 u8 hob_nsect
; /* to support LBA48 */
576 u8 command
; /* IO operation */
578 u32 auxiliary
; /* auxiliary field */
579 /* from SATA 3.1 and */
583 #ifdef CONFIG_ATA_SFF
585 void __iomem
*cmd_addr
;
586 void __iomem
*data_addr
;
587 void __iomem
*error_addr
;
588 void __iomem
*feature_addr
;
589 void __iomem
*nsect_addr
;
590 void __iomem
*lbal_addr
;
591 void __iomem
*lbam_addr
;
592 void __iomem
*lbah_addr
;
593 void __iomem
*device_addr
;
594 void __iomem
*status_addr
;
595 void __iomem
*command_addr
;
596 void __iomem
*altstatus_addr
;
597 void __iomem
*ctl_addr
;
598 #ifdef CONFIG_ATA_BMDMA
599 void __iomem
*bmdma_addr
;
600 #endif /* CONFIG_ATA_BMDMA */
601 void __iomem
*scr_addr
;
603 #endif /* CONFIG_ATA_SFF */
608 void __iomem
* const *iomap
;
609 unsigned int n_ports
;
610 unsigned int n_tags
; /* nr of NCQ tags */
612 struct ata_port_operations
*ops
;
615 struct mutex eh_mutex
;
616 struct task_struct
*eh_owner
;
618 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
619 struct ata_port
*ports
[0];
622 struct ata_queued_cmd
{
624 struct ata_device
*dev
;
626 struct scsi_cmnd
*scsicmd
;
627 void (*scsidone
)(struct scsi_cmnd
*);
629 struct ata_taskfile tf
;
630 u8 cdb
[ATAPI_CDB_LEN
];
632 unsigned long flags
; /* ATA_QCFLAG_xxx */
635 unsigned int orig_n_elem
;
639 unsigned int sect_size
;
642 unsigned int extrabytes
;
643 unsigned int curbytes
;
645 struct scatterlist sgent
;
647 struct scatterlist
*sg
;
649 struct scatterlist
*cursg
;
650 unsigned int cursg_ofs
;
652 unsigned int err_mask
;
653 struct ata_taskfile result_tf
;
654 ata_qc_cb_t complete_fn
;
660 struct ata_port_stats
{
661 unsigned long unhandled_irq
;
662 unsigned long idle_irq
;
663 unsigned long rw_reqbuf
;
666 struct ata_ering_entry
{
668 unsigned int err_mask
;
674 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
678 struct ata_link
*link
;
679 unsigned int devno
; /* 0 or 1 */
680 unsigned int horkage
; /* List of broken features */
681 unsigned long flags
; /* ATA_DFLAG_xxx */
682 struct scsi_device
*sdev
; /* attached SCSI device */
684 #ifdef CONFIG_ATA_ACPI
685 union acpi_object
*gtf_cache
;
686 unsigned int gtf_filter
;
688 #ifdef CONFIG_SATA_ZPODD
692 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
693 u64 n_sectors
; /* size of device, if ATA */
694 u64 n_native_sectors
; /* native size, if ATA */
695 unsigned int class; /* ATA_DEV_xxx */
696 unsigned long unpark_deadline
;
701 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
703 unsigned int multi_count
; /* sectors count for
704 READ/WRITE MULTIPLE */
705 unsigned int max_sectors
; /* per-device max sectors */
706 unsigned int cdb_len
;
708 /* per-dev xfer mask */
709 unsigned long pio_mask
;
710 unsigned long mwdma_mask
;
711 unsigned long udma_mask
;
713 /* for CHS addressing */
714 u16 cylinders
; /* Number of cylinders */
715 u16 heads
; /* Number of heads */
716 u16 sectors
; /* Number of sectors per track */
719 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
720 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
723 /* DEVSLP Timing Variables from Identify Device Data Log */
724 u8 devslp_timing
[ATA_LOG_DEVSLP_SIZE
];
726 /* NCQ send and receive log subcommand support */
727 u8 ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_SIZE
];
731 /* ering is CLEAR_END, read comment above CLEAR_END */
732 struct ata_ering ering
;
735 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
736 * cleared to zero on ata_dev_init().
738 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
739 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
742 struct ata_device
*dev
; /* offending device */
743 u32 serror
; /* SError from LLDD */
744 unsigned int err_mask
; /* port-wide err_mask */
745 unsigned int action
; /* ATA_EH_* action mask */
746 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
747 unsigned int flags
; /* ATA_EHI_* flags */
749 unsigned int probe_mask
;
751 char desc
[ATA_EH_DESC_LEN
];
755 struct ata_eh_context
{
756 struct ata_eh_info i
;
757 int tries
[ATA_MAX_DEVICES
];
758 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
759 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
760 unsigned int classes
[ATA_MAX_DEVICES
];
761 unsigned int did_probe_mask
;
762 unsigned int unloaded_mask
;
763 unsigned int saved_ncq_enabled
;
764 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
765 /* timestamp for the last reset attempt or success */
766 unsigned long last_reset
;
769 struct ata_acpi_drive
775 struct ata_acpi_gtm
{
776 struct ata_acpi_drive drive
[2];
782 int pmp
; /* port multiplier port # */
785 unsigned int active_tag
; /* active tag on this link */
786 u32 sactive
; /* active NCQ commands */
788 unsigned int flags
; /* ATA_LFLAG_xxx */
790 u32 saved_scontrol
; /* SControl on probe */
791 unsigned int hw_sata_spd_limit
;
792 unsigned int sata_spd_limit
;
793 unsigned int sata_spd
; /* current SATA PHY speed */
794 enum ata_lpm_policy lpm_policy
;
796 /* record runtime error info, protected by host_set lock */
797 struct ata_eh_info eh_info
;
799 struct ata_eh_context eh_context
;
801 struct ata_device device
[ATA_MAX_DEVICES
];
803 unsigned long last_lpm_change
; /* when last LPM change happened */
805 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
806 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
809 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
810 struct ata_port_operations
*ops
;
812 /* Flags owned by the EH context. Only EH should touch these once the
814 unsigned long flags
; /* ATA_FLAG_xxx */
815 /* Flags that change dynamically, protected by ap->lock */
816 unsigned int pflags
; /* ATA_PFLAG_xxx */
817 unsigned int print_id
; /* user visible unique port ID */
818 unsigned int local_port_no
; /* host local port num */
819 unsigned int port_no
; /* 0 based port no. inside the host */
821 #ifdef CONFIG_ATA_SFF
822 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
823 u8 ctl
; /* cache of ATA control register */
824 u8 last_ctl
; /* Cache last written value */
825 struct ata_link
* sff_pio_task_link
; /* link currently used */
826 struct delayed_work sff_pio_task
;
827 #ifdef CONFIG_ATA_BMDMA
828 struct ata_bmdma_prd
*bmdma_prd
; /* BMDMA SG list */
829 dma_addr_t bmdma_prd_dma
; /* and its DMA mapping */
830 #endif /* CONFIG_ATA_BMDMA */
831 #endif /* CONFIG_ATA_SFF */
833 unsigned int pio_mask
;
834 unsigned int mwdma_mask
;
835 unsigned int udma_mask
;
836 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
838 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
839 unsigned long sas_tag_allocated
; /* for sas tag allocation only */
840 unsigned int qc_active
;
841 int nr_active_links
; /* #links with active qcs */
842 unsigned int sas_last_tag
; /* track next tag hw expects */
844 struct ata_link link
; /* host default link */
845 struct ata_link
*slave_link
; /* see ata_slave_link_init() */
847 int nr_pmp_links
; /* nr of available PMP links */
848 struct ata_link
*pmp_link
; /* array of PMP links */
849 struct ata_link
*excl_link
; /* for PMP qc exclusion */
851 struct ata_port_stats stats
;
852 struct ata_host
*host
;
856 struct mutex scsi_scan_mutex
;
857 struct delayed_work hotplug_task
;
858 struct work_struct scsi_rescan_task
;
860 unsigned int hsm_task_state
;
863 struct list_head eh_done_q
;
864 wait_queue_head_t eh_wait_q
;
866 struct completion park_req_pending
;
868 pm_message_t pm_mesg
;
869 enum ata_lpm_policy target_lpm_policy
;
871 struct timer_list fastdrain_timer
;
872 unsigned long fastdrain_cnt
;
877 #ifdef CONFIG_ATA_ACPI
878 struct ata_acpi_gtm __acpi_init_gtm
; /* use ata_acpi_init_gtm() */
881 u8 sector_buf
[ATA_SECT_SIZE
] ____cacheline_aligned
;
884 /* The following initializer overrides a method to NULL whether one of
885 * its parent has the method defined or not. This is equivalent to
886 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
887 * expression and thus can't be used as an initializer.
889 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
891 struct ata_port_operations
{
895 int (*qc_defer
)(struct ata_queued_cmd
*qc
);
896 int (*check_atapi_dma
)(struct ata_queued_cmd
*qc
);
897 void (*qc_prep
)(struct ata_queued_cmd
*qc
);
898 unsigned int (*qc_issue
)(struct ata_queued_cmd
*qc
);
899 bool (*qc_fill_rtf
)(struct ata_queued_cmd
*qc
);
902 * Configuration and exception handling
904 int (*cable_detect
)(struct ata_port
*ap
);
905 unsigned long (*mode_filter
)(struct ata_device
*dev
, unsigned long xfer_mask
);
906 void (*set_piomode
)(struct ata_port
*ap
, struct ata_device
*dev
);
907 void (*set_dmamode
)(struct ata_port
*ap
, struct ata_device
*dev
);
908 int (*set_mode
)(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
909 unsigned int (*read_id
)(struct ata_device
*dev
, struct ata_taskfile
*tf
, u16
*id
);
911 void (*dev_config
)(struct ata_device
*dev
);
913 void (*freeze
)(struct ata_port
*ap
);
914 void (*thaw
)(struct ata_port
*ap
);
915 ata_prereset_fn_t prereset
;
916 ata_reset_fn_t softreset
;
917 ata_reset_fn_t hardreset
;
918 ata_postreset_fn_t postreset
;
919 ata_prereset_fn_t pmp_prereset
;
920 ata_reset_fn_t pmp_softreset
;
921 ata_reset_fn_t pmp_hardreset
;
922 ata_postreset_fn_t pmp_postreset
;
923 void (*error_handler
)(struct ata_port
*ap
);
924 void (*lost_interrupt
)(struct ata_port
*ap
);
925 void (*post_internal_cmd
)(struct ata_queued_cmd
*qc
);
926 void (*sched_eh
)(struct ata_port
*ap
);
927 void (*end_eh
)(struct ata_port
*ap
);
932 int (*scr_read
)(struct ata_link
*link
, unsigned int sc_reg
, u32
*val
);
933 int (*scr_write
)(struct ata_link
*link
, unsigned int sc_reg
, u32 val
);
934 void (*pmp_attach
)(struct ata_port
*ap
);
935 void (*pmp_detach
)(struct ata_port
*ap
);
936 int (*set_lpm
)(struct ata_link
*link
, enum ata_lpm_policy policy
,
940 * Start, stop, suspend and resume
942 int (*port_suspend
)(struct ata_port
*ap
, pm_message_t mesg
);
943 int (*port_resume
)(struct ata_port
*ap
);
944 int (*port_start
)(struct ata_port
*ap
);
945 void (*port_stop
)(struct ata_port
*ap
);
946 void (*host_stop
)(struct ata_host
*host
);
948 #ifdef CONFIG_ATA_SFF
950 * SFF / taskfile oriented ops
952 void (*sff_dev_select
)(struct ata_port
*ap
, unsigned int device
);
953 void (*sff_set_devctl
)(struct ata_port
*ap
, u8 ctl
);
954 u8 (*sff_check_status
)(struct ata_port
*ap
);
955 u8 (*sff_check_altstatus
)(struct ata_port
*ap
);
956 void (*sff_tf_load
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
957 void (*sff_tf_read
)(struct ata_port
*ap
, struct ata_taskfile
*tf
);
958 void (*sff_exec_command
)(struct ata_port
*ap
,
959 const struct ata_taskfile
*tf
);
960 unsigned int (*sff_data_xfer
)(struct ata_device
*dev
,
961 unsigned char *buf
, unsigned int buflen
, int rw
);
962 void (*sff_irq_on
)(struct ata_port
*);
963 bool (*sff_irq_check
)(struct ata_port
*);
964 void (*sff_irq_clear
)(struct ata_port
*);
965 void (*sff_drain_fifo
)(struct ata_queued_cmd
*qc
);
967 #ifdef CONFIG_ATA_BMDMA
968 void (*bmdma_setup
)(struct ata_queued_cmd
*qc
);
969 void (*bmdma_start
)(struct ata_queued_cmd
*qc
);
970 void (*bmdma_stop
)(struct ata_queued_cmd
*qc
);
971 u8 (*bmdma_status
)(struct ata_port
*ap
);
972 #endif /* CONFIG_ATA_BMDMA */
973 #endif /* CONFIG_ATA_SFF */
975 ssize_t (*em_show
)(struct ata_port
*ap
, char *buf
);
976 ssize_t (*em_store
)(struct ata_port
*ap
, const char *message
,
978 ssize_t (*sw_activity_show
)(struct ata_device
*dev
, char *buf
);
979 ssize_t (*sw_activity_store
)(struct ata_device
*dev
,
980 enum sw_activity val
);
981 ssize_t (*transmit_led_message
)(struct ata_port
*ap
, u32 state
,
987 void (*phy_reset
)(struct ata_port
*ap
);
988 void (*eng_timeout
)(struct ata_port
*ap
);
991 * ->inherits must be the last field and all the preceding
992 * fields must be pointers.
994 const struct ata_port_operations
*inherits
;
997 struct ata_port_info
{
999 unsigned long link_flags
;
1000 unsigned long pio_mask
;
1001 unsigned long mwdma_mask
;
1002 unsigned long udma_mask
;
1003 struct ata_port_operations
*port_ops
;
1008 unsigned short mode
; /* ATA mode */
1009 unsigned short setup
; /* t1 */
1010 unsigned short act8b
; /* t2 for 8-bit I/O */
1011 unsigned short rec8b
; /* t2i for 8-bit I/O */
1012 unsigned short cyc8b
; /* t0 for 8-bit I/O */
1013 unsigned short active
; /* t2 or tD */
1014 unsigned short recover
; /* t2i or tK */
1015 unsigned short dmack_hold
; /* tj */
1016 unsigned short cycle
; /* t0 */
1017 unsigned short udma
; /* t2CYCTYP/2 */
1021 * Core layer - drivers/ata/libata-core.c
1023 extern const unsigned long sata_deb_timing_normal
[];
1024 extern const unsigned long sata_deb_timing_hotplug
[];
1025 extern const unsigned long sata_deb_timing_long
[];
1027 extern struct ata_port_operations ata_dummy_port_ops
;
1028 extern const struct ata_port_info ata_dummy_port_info
;
1033 static inline unsigned int ata_prot_flags(u8 prot
)
1036 case ATA_PROT_NODATA
:
1039 return ATA_PROT_FLAG_PIO
;
1041 return ATA_PROT_FLAG_DMA
;
1043 return ATA_PROT_FLAG_DMA
| ATA_PROT_FLAG_NCQ
;
1044 case ATAPI_PROT_NODATA
:
1045 return ATA_PROT_FLAG_ATAPI
;
1046 case ATAPI_PROT_PIO
:
1047 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_PIO
;
1048 case ATAPI_PROT_DMA
:
1049 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_DMA
;
1054 static inline int ata_is_atapi(u8 prot
)
1056 return ata_prot_flags(prot
) & ATA_PROT_FLAG_ATAPI
;
1059 static inline int ata_is_nodata(u8 prot
)
1061 return !(ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
);
1064 static inline int ata_is_pio(u8 prot
)
1066 return ata_prot_flags(prot
) & ATA_PROT_FLAG_PIO
;
1069 static inline int ata_is_dma(u8 prot
)
1071 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DMA
;
1074 static inline int ata_is_ncq(u8 prot
)
1076 return ata_prot_flags(prot
) & ATA_PROT_FLAG_NCQ
;
1079 static inline int ata_is_data(u8 prot
)
1081 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
;
1084 static inline int is_multi_taskfile(struct ata_taskfile
*tf
)
1086 return (tf
->command
== ATA_CMD_READ_MULTI
) ||
1087 (tf
->command
== ATA_CMD_WRITE_MULTI
) ||
1088 (tf
->command
== ATA_CMD_READ_MULTI_EXT
) ||
1089 (tf
->command
== ATA_CMD_WRITE_MULTI_EXT
) ||
1090 (tf
->command
== ATA_CMD_WRITE_MULTI_FUA_EXT
);
1093 static inline const unsigned long *
1094 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
1096 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
1097 return sata_deb_timing_hotplug
;
1099 return sata_deb_timing_normal
;
1102 static inline int ata_port_is_dummy(struct ata_port
*ap
)
1104 return ap
->ops
== &ata_dummy_port_ops
;
1107 extern int sata_set_spd(struct ata_link
*link
);
1108 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
1109 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
1110 int (*check_ready
)(struct ata_link
*link
));
1111 extern int sata_link_debounce(struct ata_link
*link
,
1112 const unsigned long *params
, unsigned long deadline
);
1113 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
1114 unsigned long deadline
);
1115 extern int sata_link_scr_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
1117 extern int sata_link_hardreset(struct ata_link
*link
,
1118 const unsigned long *timing
, unsigned long deadline
,
1119 bool *online
, int (*check_ready
)(struct ata_link
*));
1120 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
1121 unsigned long deadline
);
1122 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
1124 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
1125 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
1126 const struct ata_port_info
* const * ppi
, int n_ports
);
1127 extern int ata_slave_link_init(struct ata_port
*ap
);
1128 extern int ata_host_start(struct ata_host
*host
);
1129 extern int ata_host_register(struct ata_host
*host
,
1130 struct scsi_host_template
*sht
);
1131 extern int ata_host_activate(struct ata_host
*host
, int irq
,
1132 irq_handler_t irq_handler
, unsigned long irq_flags
,
1133 struct scsi_host_template
*sht
);
1134 extern void ata_host_detach(struct ata_host
*host
);
1135 extern void ata_host_init(struct ata_host
*, struct device
*, struct ata_port_operations
*);
1136 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
1137 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
1138 extern int ata_scsi_queuecmd(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
1139 extern int ata_sas_scsi_ioctl(struct ata_port
*ap
, struct scsi_device
*dev
,
1140 int cmd
, void __user
*arg
);
1141 extern void ata_sas_port_destroy(struct ata_port
*);
1142 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
1143 struct ata_port_info
*, struct Scsi_Host
*);
1144 extern void ata_sas_async_probe(struct ata_port
*ap
);
1145 extern int ata_sas_sync_probe(struct ata_port
*ap
);
1146 extern int ata_sas_port_init(struct ata_port
*);
1147 extern int ata_sas_port_start(struct ata_port
*ap
);
1148 extern void ata_sas_port_stop(struct ata_port
*ap
);
1149 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
1150 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, struct ata_port
*ap
);
1151 extern int sata_scr_valid(struct ata_link
*link
);
1152 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
1153 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
1154 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
1155 extern bool ata_link_online(struct ata_link
*link
);
1156 extern bool ata_link_offline(struct ata_link
*link
);
1158 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
1159 extern void ata_host_resume(struct ata_host
*host
);
1160 extern void ata_sas_port_suspend(struct ata_port
*ap
);
1161 extern void ata_sas_port_resume(struct ata_port
*ap
);
1163 static inline void ata_sas_port_suspend(struct ata_port
*ap
)
1166 static inline void ata_sas_port_resume(struct ata_port
*ap
)
1170 extern int ata_ratelimit(void);
1171 extern void ata_msleep(struct ata_port
*ap
, unsigned int msecs
);
1172 extern u32
ata_wait_register(struct ata_port
*ap
, void __iomem
*reg
, u32 mask
,
1173 u32 val
, unsigned long interval
, unsigned long timeout
);
1174 extern int atapi_cmd_type(u8 opcode
);
1175 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
1176 u8 pmp
, int is_cmd
, u8
*fis
);
1177 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
1178 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
1179 unsigned long mwdma_mask
, unsigned long udma_mask
);
1180 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
1181 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
1182 unsigned long *udma_mask
);
1183 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
1184 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
1185 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
1186 extern const char *ata_mode_string(unsigned long xfer_mask
);
1187 extern unsigned long ata_id_xfermask(const u16
*id
);
1188 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
1189 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
1190 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
1191 unsigned int n_elem
);
1192 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
1193 extern void ata_dev_disable(struct ata_device
*adev
);
1194 extern void ata_id_string(const u16
*id
, unsigned char *s
,
1195 unsigned int ofs
, unsigned int len
);
1196 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
1197 unsigned int ofs
, unsigned int len
);
1198 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
1199 struct ata_taskfile
*tf
, u16
*id
);
1200 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
1201 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
);
1202 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
);
1203 extern int ata_std_bios_param(struct scsi_device
*sdev
,
1204 struct block_device
*bdev
,
1205 sector_t capacity
, int geom
[]);
1206 extern void ata_scsi_unlock_native_capacity(struct scsi_device
*sdev
);
1207 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
1208 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
1209 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
1211 extern int __ata_change_queue_depth(struct ata_port
*ap
, struct scsi_device
*sdev
,
1213 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
1214 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
1215 extern void ata_scsi_port_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
);
1216 extern void ata_scsi_cmd_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
, struct list_head
*eh_q
);
1217 extern bool sata_lpm_ignore_phy_events(struct ata_link
*link
);
1219 extern int ata_cable_40wire(struct ata_port
*ap
);
1220 extern int ata_cable_80wire(struct ata_port
*ap
);
1221 extern int ata_cable_sata(struct ata_port
*ap
);
1222 extern int ata_cable_ignore(struct ata_port
*ap
);
1223 extern int ata_cable_unknown(struct ata_port
*ap
);
1225 /* Timing helpers */
1226 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
1227 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
1228 extern int ata_timing_compute(struct ata_device
*, unsigned short,
1229 struct ata_timing
*, int, int);
1230 extern void ata_timing_merge(const struct ata_timing
*,
1231 const struct ata_timing
*, struct ata_timing
*,
1233 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
1240 unsigned int reg
; /* PCI config register to read */
1241 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1246 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1247 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1250 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1251 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1252 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1253 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1254 #endif /* CONFIG_PM */
1255 #endif /* CONFIG_PCI */
1257 struct platform_device
;
1259 extern int ata_platform_remove_one(struct platform_device
*pdev
);
1262 * ACPI - drivers/ata/libata-acpi.c
1264 #ifdef CONFIG_ATA_ACPI
1265 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1267 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1268 return &ap
->__acpi_init_gtm
;
1271 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1272 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1273 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1274 const struct ata_acpi_gtm
*gtm
);
1275 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1277 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1282 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1283 struct ata_acpi_gtm
*stm
)
1288 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1289 struct ata_acpi_gtm
*stm
)
1294 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1295 const struct ata_acpi_gtm
*gtm
)
1300 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1301 const struct ata_acpi_gtm
*gtm
)
1308 * EH - drivers/ata/libata-eh.c
1310 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1311 extern void ata_port_wait_eh(struct ata_port
*ap
);
1312 extern int ata_link_abort(struct ata_link
*link
);
1313 extern int ata_port_abort(struct ata_port
*ap
);
1314 extern int ata_port_freeze(struct ata_port
*ap
);
1315 extern int sata_async_notification(struct ata_port
*ap
);
1317 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1318 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1320 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1321 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1322 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1324 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1325 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1326 ata_postreset_fn_t postreset
);
1327 extern void ata_std_error_handler(struct ata_port
*ap
);
1328 extern void ata_std_sched_eh(struct ata_port
*ap
);
1329 extern void ata_std_end_eh(struct ata_port
*ap
);
1330 extern int ata_link_nr_enabled(struct ata_link
*link
);
1333 * Base operations to inherit from and initializers for sht
1337 * base : Common to all libata drivers.
1338 * sata : SATA controllers w/ native interface.
1339 * pmp : SATA controllers w/ PMP support.
1340 * sff : SFF ATA controllers w/o BMDMA support.
1341 * bmdma : SFF ATA controllers w/ BMDMA support.
1345 * BASE : Common to all libata drivers. The user must set
1346 * sg_tablesize and dma_boundary.
1347 * PIO : SFF ATA controllers w/ only PIO support.
1348 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1349 * dma_boundary are set to BMDMA limits.
1350 * NCQ : SATA controllers supporting NCQ. The user must set
1351 * sg_tablesize, dma_boundary and can_queue.
1353 extern const struct ata_port_operations ata_base_port_ops
;
1354 extern const struct ata_port_operations sata_port_ops
;
1355 extern struct device_attribute
*ata_common_sdev_attrs
[];
1358 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1359 * by the edge drivers. Because the 'module' field of sht must be the
1360 * edge driver's module reference, otherwise the driver can be unloaded
1361 * even if the scsi_device is being accessed.
1363 #define ATA_BASE_SHT(drv_name) \
1364 .module = THIS_MODULE, \
1366 .ioctl = ata_scsi_ioctl, \
1367 .queuecommand = ata_scsi_queuecmd, \
1368 .can_queue = ATA_DEF_QUEUE, \
1369 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1370 .this_id = ATA_SHT_THIS_ID, \
1371 .emulated = ATA_SHT_EMULATED, \
1372 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1373 .proc_name = drv_name, \
1374 .slave_configure = ata_scsi_slave_config, \
1375 .slave_destroy = ata_scsi_slave_destroy, \
1376 .bios_param = ata_std_bios_param, \
1377 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1378 .sdev_attrs = ata_common_sdev_attrs
1380 #define ATA_NCQ_SHT(drv_name) \
1381 ATA_BASE_SHT(drv_name), \
1382 .change_queue_depth = ata_scsi_change_queue_depth
1387 #ifdef CONFIG_SATA_PMP
1388 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1390 return ap
->flags
& ATA_FLAG_PMP
;
1393 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1395 return ap
->nr_pmp_links
!= 0;
1398 static inline int ata_is_host_link(const struct ata_link
*link
)
1400 return link
== &link
->ap
->link
|| link
== link
->ap
->slave_link
;
1402 #else /* CONFIG_SATA_PMP */
1403 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1408 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1413 static inline int ata_is_host_link(const struct ata_link
*link
)
1417 #endif /* CONFIG_SATA_PMP */
1419 static inline int sata_srst_pmp(struct ata_link
*link
)
1421 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1422 return SATA_PMP_CTRL_PORT
;
1430 void ata_port_printk(const struct ata_port
*ap
, const char *level
,
1431 const char *fmt
, ...);
1433 void ata_link_printk(const struct ata_link
*link
, const char *level
,
1434 const char *fmt
, ...);
1436 void ata_dev_printk(const struct ata_device
*dev
, const char *level
,
1437 const char *fmt
, ...);
1439 #define ata_port_err(ap, fmt, ...) \
1440 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1441 #define ata_port_warn(ap, fmt, ...) \
1442 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1443 #define ata_port_notice(ap, fmt, ...) \
1444 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1445 #define ata_port_info(ap, fmt, ...) \
1446 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1447 #define ata_port_dbg(ap, fmt, ...) \
1448 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1450 #define ata_link_err(link, fmt, ...) \
1451 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1452 #define ata_link_warn(link, fmt, ...) \
1453 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1454 #define ata_link_notice(link, fmt, ...) \
1455 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1456 #define ata_link_info(link, fmt, ...) \
1457 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1458 #define ata_link_dbg(link, fmt, ...) \
1459 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1461 #define ata_dev_err(dev, fmt, ...) \
1462 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1463 #define ata_dev_warn(dev, fmt, ...) \
1464 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1465 #define ata_dev_notice(dev, fmt, ...) \
1466 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1467 #define ata_dev_info(dev, fmt, ...) \
1468 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1469 #define ata_dev_dbg(dev, fmt, ...) \
1470 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1472 void ata_print_version(const struct device
*dev
, const char *version
);
1475 * ata_eh_info helpers
1477 extern __printf(2, 3)
1478 void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1479 extern __printf(2, 3)
1480 void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1481 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1483 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1485 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1486 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1487 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1488 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1492 * port description helpers
1494 extern __printf(2, 3)
1495 void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...);
1497 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1501 static inline unsigned int ata_tag_valid(unsigned int tag
)
1503 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1506 static inline unsigned int ata_tag_internal(unsigned int tag
)
1508 return tag
== ATA_TAG_INTERNAL
;
1514 static inline unsigned int ata_class_enabled(unsigned int class)
1516 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1517 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
||
1518 class == ATA_DEV_ZAC
;
1521 static inline unsigned int ata_class_disabled(unsigned int class)
1523 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1524 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
;
1527 static inline unsigned int ata_class_absent(unsigned int class)
1529 return !ata_class_enabled(class) && !ata_class_disabled(class);
1532 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1534 return ata_class_enabled(dev
->class);
1537 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1539 return ata_class_disabled(dev
->class);
1542 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1544 return ata_class_absent(dev
->class);
1550 static inline int ata_link_max_devices(const struct ata_link
*link
)
1552 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1557 static inline int ata_link_active(struct ata_link
*link
)
1559 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1565 * ATA_LITER_* constants are used to select link iteration mode and
1566 * ATA_DITER_* device iteration mode.
1568 * For a custom iteration directly using ata_{link|dev}_next(), if
1569 * @link or @dev, respectively, is NULL, the first element is
1570 * returned. @dev and @link can be any valid device or link and the
1571 * next element according to the iteration mode will be returned.
1572 * After the last element, NULL is returned.
1574 enum ata_link_iter_mode
{
1575 ATA_LITER_EDGE
, /* if present, PMP links only; otherwise,
1576 * host link. no slave link */
1577 ATA_LITER_HOST_FIRST
, /* host link followed by PMP or slave links */
1578 ATA_LITER_PMP_FIRST
, /* PMP links followed by host link,
1579 * slave link still comes after host link */
1582 enum ata_dev_iter_mode
{
1584 ATA_DITER_ENABLED_REVERSE
,
1586 ATA_DITER_ALL_REVERSE
,
1589 extern struct ata_link
*ata_link_next(struct ata_link
*link
,
1590 struct ata_port
*ap
,
1591 enum ata_link_iter_mode mode
);
1593 extern struct ata_device
*ata_dev_next(struct ata_device
*dev
,
1594 struct ata_link
*link
,
1595 enum ata_dev_iter_mode mode
);
1598 * Shortcut notation for iterations
1600 * ata_for_each_link() iterates over each link of @ap according to
1601 * @mode. @link points to the current link in the loop. @link is
1602 * NULL after loop termination. ata_for_each_dev() works the same way
1603 * except that it iterates over each device of @link.
1605 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1606 * specified when using the following shorthand notations. Only the
1607 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1608 * specified. This not only increases brevity but also makes it
1609 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1611 #define ata_for_each_link(link, ap, mode) \
1612 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1613 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1615 #define ata_for_each_dev(dev, link, mode) \
1616 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1617 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1620 * ata_ncq_enabled - Test whether NCQ is enabled
1621 * @dev: ATA device to test for
1624 * spin_lock_irqsave(host lock)
1627 * 1 if NCQ is enabled for @dev, 0 otherwise.
1629 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1631 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1632 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1635 static inline bool ata_fpdma_dsm_supported(struct ata_device
*dev
)
1637 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1638 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET
] &
1639 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM
);
1642 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1644 qc
->tf
.ctl
|= ATA_NIEN
;
1647 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1650 if (likely(ata_tag_valid(tag
)))
1651 return &ap
->qcmd
[tag
];
1655 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1658 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1660 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1663 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1664 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1670 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1672 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1675 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1677 memset(tf
, 0, sizeof(*tf
));
1679 #ifdef CONFIG_ATA_SFF
1680 tf
->ctl
= dev
->link
->ap
->ctl
;
1682 tf
->ctl
= ATA_DEVCTL_OBS
;
1684 if (dev
->devno
== 0)
1685 tf
->device
= ATA_DEVICE_OBS
;
1687 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1690 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1692 qc
->dma_dir
= DMA_NONE
;
1697 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1700 qc
->sect_size
= ATA_SECT_SIZE
;
1702 ata_tf_init(qc
->dev
, &qc
->tf
);
1704 /* init result_tf such that it indicates normal completion */
1705 qc
->result_tf
.command
= ATA_DRDY
;
1706 qc
->result_tf
.feature
= 0;
1709 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1711 return ata_id_wcache_enabled(dev
->id
) ||
1712 ata_id_has_flush(dev
->id
) ||
1713 ata_id_has_flush_ext(dev
->id
);
1716 static inline unsigned int ac_err_mask(u8 status
)
1718 if (status
& (ATA_BUSY
| ATA_DRQ
))
1720 if (status
& (ATA_ERR
| ATA_DF
))
1725 static inline unsigned int __ac_err_mask(u8 status
)
1727 unsigned int mask
= ac_err_mask(status
);
1729 return AC_ERR_OTHER
;
1733 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1735 return *(struct ata_port
**)&host
->hostdata
[0];
1738 static inline int ata_check_ready(u8 status
)
1740 if (!(status
& ATA_BUSY
))
1743 /* 0xff indicates either no device or device not ready */
1750 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1751 unsigned long timeout_msecs
)
1753 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1756 /* Don't open code these in drivers as there are traps. Firstly the range may
1757 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1758 > UDMA_0. Dyma ddreigiau */
1760 static inline int ata_using_mwdma(struct ata_device
*adev
)
1762 if (adev
->dma_mode
>= XFER_MW_DMA_0
&& adev
->dma_mode
<= XFER_MW_DMA_4
)
1767 static inline int ata_using_udma(struct ata_device
*adev
)
1769 if (adev
->dma_mode
>= XFER_UDMA_0
&& adev
->dma_mode
<= XFER_UDMA_7
)
1774 static inline int ata_dma_enabled(struct ata_device
*adev
)
1776 return (adev
->dma_mode
== 0xFF ? 0 : 1);
1779 /**************************************************************************
1780 * PMP - drivers/ata/libata-pmp.c
1782 #ifdef CONFIG_SATA_PMP
1784 extern const struct ata_port_operations sata_pmp_port_ops
;
1786 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1787 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1789 #else /* CONFIG_SATA_PMP */
1791 #define sata_pmp_port_ops sata_port_ops
1792 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1793 #define sata_pmp_error_handler ata_std_error_handler
1795 #endif /* CONFIG_SATA_PMP */
1798 /**************************************************************************
1799 * SFF - drivers/ata/libata-sff.c
1801 #ifdef CONFIG_ATA_SFF
1803 extern const struct ata_port_operations ata_sff_port_ops
;
1804 extern const struct ata_port_operations ata_bmdma32_port_ops
;
1806 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1807 #define ATA_PIO_SHT(drv_name) \
1808 ATA_BASE_SHT(drv_name), \
1809 .sg_tablesize = LIBATA_MAX_PRD, \
1810 .dma_boundary = ATA_DMA_BOUNDARY
1812 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1813 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1814 extern void ata_sff_pause(struct ata_port
*ap
);
1815 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1816 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1817 unsigned long timeout_pat
, unsigned long timeout
);
1818 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1819 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1820 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1821 extern void ata_sff_exec_command(struct ata_port
*ap
,
1822 const struct ata_taskfile
*tf
);
1823 extern unsigned int ata_sff_data_xfer(struct ata_device
*dev
,
1824 unsigned char *buf
, unsigned int buflen
, int rw
);
1825 extern unsigned int ata_sff_data_xfer32(struct ata_device
*dev
,
1826 unsigned char *buf
, unsigned int buflen
, int rw
);
1827 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device
*dev
,
1828 unsigned char *buf
, unsigned int buflen
, int rw
);
1829 extern void ata_sff_irq_on(struct ata_port
*ap
);
1830 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1831 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1832 u8 status
, int in_wq
);
1833 extern void ata_sff_queue_work(struct work_struct
*work
);
1834 extern void ata_sff_queue_delayed_work(struct delayed_work
*dwork
,
1835 unsigned long delay
);
1836 extern void ata_sff_queue_pio_task(struct ata_link
*link
, unsigned long delay
);
1837 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1838 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1839 extern unsigned int ata_sff_port_intr(struct ata_port
*ap
,
1840 struct ata_queued_cmd
*qc
);
1841 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1842 extern void ata_sff_lost_interrupt(struct ata_port
*ap
);
1843 extern void ata_sff_freeze(struct ata_port
*ap
);
1844 extern void ata_sff_thaw(struct ata_port
*ap
);
1845 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1846 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1848 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1849 unsigned long deadline
);
1850 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1851 unsigned long deadline
);
1852 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1853 unsigned long deadline
);
1854 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1855 extern void ata_sff_drain_fifo(struct ata_queued_cmd
*qc
);
1856 extern void ata_sff_error_handler(struct ata_port
*ap
);
1857 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1859 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1860 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1861 const struct ata_port_info
* const * ppi
,
1862 struct ata_host
**r_host
);
1863 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1864 irq_handler_t irq_handler
,
1865 struct scsi_host_template
*sht
);
1866 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1867 const struct ata_port_info
* const * ppi
,
1868 struct scsi_host_template
*sht
, void *host_priv
, int hflags
);
1869 #endif /* CONFIG_PCI */
1871 #ifdef CONFIG_ATA_BMDMA
1873 extern const struct ata_port_operations ata_bmdma_port_ops
;
1875 #define ATA_BMDMA_SHT(drv_name) \
1876 ATA_BASE_SHT(drv_name), \
1877 .sg_tablesize = LIBATA_MAX_PRD, \
1878 .dma_boundary = ATA_DMA_BOUNDARY
1880 extern void ata_bmdma_qc_prep(struct ata_queued_cmd
*qc
);
1881 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd
*qc
);
1882 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1883 extern unsigned int ata_bmdma_port_intr(struct ata_port
*ap
,
1884 struct ata_queued_cmd
*qc
);
1885 extern irqreturn_t
ata_bmdma_interrupt(int irq
, void *dev_instance
);
1886 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
1887 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
1888 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
1889 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1890 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1891 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1892 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1893 extern int ata_bmdma_port_start(struct ata_port
*ap
);
1894 extern int ata_bmdma_port_start32(struct ata_port
*ap
);
1897 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1898 extern void ata_pci_bmdma_init(struct ata_host
*host
);
1899 extern int ata_pci_bmdma_prepare_host(struct pci_dev
*pdev
,
1900 const struct ata_port_info
* const * ppi
,
1901 struct ata_host
**r_host
);
1902 extern int ata_pci_bmdma_init_one(struct pci_dev
*pdev
,
1903 const struct ata_port_info
* const * ppi
,
1904 struct scsi_host_template
*sht
,
1905 void *host_priv
, int hflags
);
1906 #endif /* CONFIG_PCI */
1907 #endif /* CONFIG_ATA_BMDMA */
1910 * ata_sff_busy_wait - Wait for a port status register
1911 * @ap: Port to wait for.
1912 * @bits: bits that must be clear
1913 * @max: number of 10uS waits to perform
1915 * Waits up to max*10 microseconds for the selected bits in the port's
1916 * status register to be cleared.
1917 * Returns final value of status register.
1920 * Inherited from caller.
1922 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1929 status
= ap
->ops
->sff_check_status(ap
);
1931 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1937 * ata_wait_idle - Wait for a port to be idle.
1938 * @ap: Port to wait for.
1940 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1941 * Returns final value of status register.
1944 * Inherited from caller.
1946 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1948 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1951 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1952 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1958 #endif /* CONFIG_ATA_SFF */
1960 #endif /* __LINUX_LIBATA_H__ */