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 */
183 ATA_DFLAG_D_SENSE
= (1 << 29), /* Descriptor sense requested */
185 ATA_DEV_UNKNOWN
= 0, /* unknown device */
186 ATA_DEV_ATA
= 1, /* ATA device */
187 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
188 ATA_DEV_ATAPI
= 3, /* ATAPI device */
189 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
190 ATA_DEV_PMP
= 5, /* SATA port multiplier */
191 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
192 ATA_DEV_SEMB
= 7, /* SEMB */
193 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
194 ATA_DEV_ZAC
= 9, /* ZAC device */
195 ATA_DEV_ZAC_UNSUP
= 10, /* ZAC device (unsupported) */
196 ATA_DEV_NONE
= 11, /* no device */
198 /* struct ata_link flags */
199 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
200 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
201 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
202 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
203 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
204 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
205 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
206 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
207 ATA_LFLAG_NO_LPM
= (1 << 8), /* disable LPM on this link */
208 ATA_LFLAG_RST_ONCE
= (1 << 9), /* limit recovery to one reset */
209 ATA_LFLAG_CHANGED
= (1 << 10), /* LPM state changed on this link */
210 ATA_LFLAG_NO_DB_DELAY
= (1 << 11), /* no debounce delay on link resume */
212 /* struct ata_port flags */
213 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
214 /* (doesn't imply presence) */
215 ATA_FLAG_SATA
= (1 << 1),
216 ATA_FLAG_NO_LOG_PAGE
= (1 << 5), /* do not issue log page read */
217 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
218 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
219 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
220 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
221 * doesn't handle PIO interrupts */
222 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
223 ATA_FLAG_NO_POWEROFF_SPINDOWN
= (1 << 11), /* don't spindown before poweroff */
224 ATA_FLAG_NO_HIBERNATE_SPINDOWN
= (1 << 12), /* don't spindown before hibernation */
225 ATA_FLAG_DEBUGMSG
= (1 << 13),
226 ATA_FLAG_FPDMA_AA
= (1 << 14), /* driver supports Auto-Activate */
227 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
228 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
229 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
230 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
231 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
232 ATA_FLAG_FPDMA_AUX
= (1 << 20), /* controller supports H2DFIS aux field */
233 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
235 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
237 ATA_FLAG_NO_DIPM
= (1 << 23), /* host not happy with DIPM */
238 ATA_FLAG_SAS_HOST
= (1 << 24), /* SAS host */
240 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
243 /* struct ata_port pflags */
244 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
245 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
246 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
247 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
248 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
249 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
250 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
251 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
252 ATA_PFLAG_UNLOADING
= (1 << 9), /* driver is being unloaded */
253 ATA_PFLAG_UNLOADED
= (1 << 10), /* driver is unloaded */
255 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
256 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
257 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
259 ATA_PFLAG_PIO32
= (1 << 20), /* 32bit PIO */
260 ATA_PFLAG_PIO32CHANGE
= (1 << 21), /* 32bit PIO can be turned on/off */
261 ATA_PFLAG_EXTERNAL
= (1 << 22), /* eSATA/external port */
263 /* struct ata_queued_cmd flags */
264 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
265 ATA_QCFLAG_DMAMAP
= (1 << 1), /* SG table is DMA mapped */
266 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
267 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
268 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
269 ATA_QCFLAG_QUIET
= (1 << 6), /* don't report device error */
270 ATA_QCFLAG_RETRY
= (1 << 7), /* retry after failure */
272 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
273 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
274 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
277 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
278 ATA_HOST_STARTED
= (1 << 1), /* Host started */
279 ATA_HOST_PARALLEL_SCAN
= (1 << 2), /* Ports on this host can be scanned in parallel */
280 ATA_HOST_IGNORE_ATA
= (1 << 3), /* Ignore ATA devices on this host. */
282 /* bits 24:31 of host->flags are reserved for LLD specific flags */
284 /* various lengths of time */
285 ATA_TMOUT_BOOT
= 30000, /* heuristic */
286 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
287 ATA_TMOUT_INTERNAL_QUICK
= 5000,
288 ATA_TMOUT_MAX_PARK
= 30000,
291 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
292 * is too much without parallel probing. Use 2s if parallel
293 * probing is available, 800ms otherwise.
295 ATA_TMOUT_FF_WAIT_LONG
= 2000,
296 ATA_TMOUT_FF_WAIT
= 800,
298 /* Spec mandates to wait for ">= 2ms" before checking status
299 * after reset. We wait 150ms, because that was the magic
300 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
301 * the period of time between when the ATA command register is
302 * written, and then status is checked. Because waiting for
303 * "a while" before checking status is fine, post SRST, we
304 * perform this magic delay here as well.
306 * Old drivers/ide uses the 2mS rule and then waits for ready.
308 ATA_WAIT_AFTER_RESET
= 150,
310 /* If PMP is supported, we have to do follow-up SRST. As some
311 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
312 * advised to wait only for the following duration before
315 ATA_TMOUT_PMP_SRST_WAIT
= 5000,
317 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
318 * be a spurious PHY event, so ignore the first PHY event that
319 * occurs within 10s after the policy change.
321 ATA_TMOUT_SPURIOUS_PHY
= 10000,
335 /* SATA port states */
340 /* encoding various smaller bitmaps into a single
341 * unsigned long bitmap
343 ATA_NR_PIO_MODES
= 7,
344 ATA_NR_MWDMA_MODES
= 5,
345 ATA_NR_UDMA_MODES
= 8,
348 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
349 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
351 /* size of buffer to pad xfers ending on unaligned boundaries */
357 /* return values for ->qc_defer */
361 /* desc_len for ata_eh_info and context */
362 ATA_EH_DESC_LEN
= 80,
364 /* reset / recovery action types */
365 ATA_EH_REVALIDATE
= (1 << 0),
366 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
367 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
368 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
369 ATA_EH_ENABLE_LINK
= (1 << 3),
370 ATA_EH_PARK
= (1 << 5), /* unload heads and stop I/O */
372 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
| ATA_EH_PARK
,
373 ATA_EH_ALL_ACTIONS
= ATA_EH_REVALIDATE
| ATA_EH_RESET
|
376 /* ata_eh_info->flags */
377 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
378 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
379 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
380 ATA_EHI_NO_RECOVERY
= (1 << 4), /* no recovery */
382 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
383 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
384 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
385 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
386 ATA_EHI_POST_SETMODE
= (1 << 20), /* revalidating after setmode */
388 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
390 /* mask of flags to transfer *to* the slave link */
391 ATA_EHI_TO_SLAVE_MASK
= ATA_EHI_NO_AUTOPSY
| ATA_EHI_QUIET
,
393 /* max tries if error condition is still set after ->error_handler */
394 ATA_EH_MAX_TRIES
= 5,
396 /* sometimes resuming a link requires several retries */
397 ATA_LINK_RESUME_TRIES
= 5,
399 /* how hard are we gonna try to probe/recover devices */
400 ATA_PROBE_MAX_TRIES
= 3,
401 ATA_EH_DEV_TRIES
= 3,
402 ATA_EH_PMP_TRIES
= 5,
403 ATA_EH_PMP_LINK_TRIES
= 3,
405 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
407 /* This should match the actual table size of
408 * ata_eh_cmd_timeout_table in libata-eh.c.
410 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 6,
412 /* Horkage types. May be set by libata or controller on drives
413 (some horkage may be drive/controller pair dependent */
415 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
416 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
417 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
418 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
419 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
420 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
421 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
422 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
423 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
424 ATA_HORKAGE_BRIDGE_OK
= (1 << 10), /* no bridge limits */
425 ATA_HORKAGE_ATAPI_MOD16_DMA
= (1 << 11), /* use ATAPI DMA for commands
426 not multiple of 16 bytes */
427 ATA_HORKAGE_FIRMWARE_WARN
= (1 << 12), /* firmware update warning */
428 ATA_HORKAGE_1_5_GBPS
= (1 << 13), /* force 1.5 Gbps */
429 ATA_HORKAGE_NOSETXFER
= (1 << 14), /* skip SETXFER, SATA only */
430 ATA_HORKAGE_BROKEN_FPDMA_AA
= (1 << 15), /* skip AA */
431 ATA_HORKAGE_DUMP_ID
= (1 << 16), /* dump IDENTIFY data */
432 ATA_HORKAGE_MAX_SEC_LBA48
= (1 << 17), /* Set max sects to 65535 */
433 ATA_HORKAGE_ATAPI_DMADIR
= (1 << 18), /* device requires dmadir */
434 ATA_HORKAGE_NO_NCQ_TRIM
= (1 << 19), /* don't use queued TRIM */
435 ATA_HORKAGE_NOLPM
= (1 << 20), /* don't use LPM */
436 ATA_HORKAGE_WD_BROKEN_LPM
= (1 << 21), /* some WDs have broken LPM */
437 ATA_HORKAGE_ZERO_AFTER_TRIM
= (1 << 22),/* guarantees zero after trim */
438 ATA_HORKAGE_NO_NCQ_LOG
= (1 << 23), /* don't use NCQ for log read */
439 ATA_HORKAGE_NOTRIM
= (1 << 24), /* don't use TRIM */
440 ATA_HORKAGE_MAX_SEC_1024
= (1 << 25), /* Limit max sects to 1024 */
442 /* DMA mask for user DMA control: User visible values; DO NOT
444 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
445 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
446 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
448 /* ATAPI command types */
449 ATAPI_READ
= 0, /* READs */
450 ATAPI_WRITE
= 1, /* WRITEs */
451 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
452 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
453 ATAPI_MISC
= 4, /* the rest */
455 /* Timing constants */
456 ATA_TIMING_SETUP
= (1 << 0),
457 ATA_TIMING_ACT8B
= (1 << 1),
458 ATA_TIMING_REC8B
= (1 << 2),
459 ATA_TIMING_CYC8B
= (1 << 3),
460 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
462 ATA_TIMING_ACTIVE
= (1 << 4),
463 ATA_TIMING_RECOVER
= (1 << 5),
464 ATA_TIMING_DMACK_HOLD
= (1 << 6),
465 ATA_TIMING_CYCLE
= (1 << 7),
466 ATA_TIMING_UDMA
= (1 << 8),
467 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
468 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
469 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
470 ATA_TIMING_DMACK_HOLD
| ATA_TIMING_CYCLE
|
474 ATA_ACPI_FILTER_SETXFER
= 1 << 0,
475 ATA_ACPI_FILTER_LOCK
= 1 << 1,
476 ATA_ACPI_FILTER_DIPM
= 1 << 2,
477 ATA_ACPI_FILTER_FPDMA_OFFSET
= 1 << 3, /* FPDMA non-zero offset */
478 ATA_ACPI_FILTER_FPDMA_AA
= 1 << 4, /* FPDMA auto activate */
480 ATA_ACPI_FILTER_DEFAULT
= ATA_ACPI_FILTER_SETXFER
|
481 ATA_ACPI_FILTER_LOCK
|
482 ATA_ACPI_FILTER_DIPM
,
486 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
488 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
490 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
494 enum hsm_task_states
{
495 HSM_ST_IDLE
, /* no command on going */
496 HSM_ST_FIRST
, /* (waiting the device to)
497 write CDB or first data block */
498 HSM_ST
, /* (waiting the device to) transfer data */
499 HSM_ST_LAST
, /* (waiting the device to) complete command */
500 HSM_ST_ERR
, /* error */
503 enum ata_completion_errors
{
504 AC_ERR_DEV
= (1 << 0), /* device reported error */
505 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
506 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
507 AC_ERR_MEDIA
= (1 << 3), /* media error */
508 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
509 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
510 AC_ERR_SYSTEM
= (1 << 6), /* system error */
511 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
512 AC_ERR_OTHER
= (1 << 8), /* unknown */
513 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
514 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
518 * Link power management policy: If you alter this, you also need to
519 * alter libata-scsi.c (for the ascii descriptions)
521 enum ata_lpm_policy
{
529 ATA_LPM_EMPTY
= (1 << 0), /* port empty/probing */
530 ATA_LPM_HIPM
= (1 << 1), /* may use HIPM */
531 ATA_LPM_WAKE_ONLY
= (1 << 2), /* only wake up link */
534 /* forward declarations */
536 struct ata_port_operations
;
539 struct ata_queued_cmd
;
542 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
543 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
544 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
545 unsigned long deadline
);
546 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
548 extern struct device_attribute dev_attr_link_power_management_policy
;
549 extern struct device_attribute dev_attr_unload_heads
;
550 extern struct device_attribute dev_attr_em_message_type
;
551 extern struct device_attribute dev_attr_em_message
;
552 extern struct device_attribute dev_attr_sw_activity
;
560 struct ata_taskfile
{
561 unsigned long flags
; /* ATA_TFLAG_xxx */
562 u8 protocol
; /* ATA_PROT_xxx */
564 u8 ctl
; /* control reg */
566 u8 hob_feature
; /* additional data */
567 u8 hob_nsect
; /* to support LBA48 */
580 u8 command
; /* IO operation */
582 u32 auxiliary
; /* auxiliary field */
583 /* from SATA 3.1 and */
587 #ifdef CONFIG_ATA_SFF
589 void __iomem
*cmd_addr
;
590 void __iomem
*data_addr
;
591 void __iomem
*error_addr
;
592 void __iomem
*feature_addr
;
593 void __iomem
*nsect_addr
;
594 void __iomem
*lbal_addr
;
595 void __iomem
*lbam_addr
;
596 void __iomem
*lbah_addr
;
597 void __iomem
*device_addr
;
598 void __iomem
*status_addr
;
599 void __iomem
*command_addr
;
600 void __iomem
*altstatus_addr
;
601 void __iomem
*ctl_addr
;
602 #ifdef CONFIG_ATA_BMDMA
603 void __iomem
*bmdma_addr
;
604 #endif /* CONFIG_ATA_BMDMA */
605 void __iomem
*scr_addr
;
607 #endif /* CONFIG_ATA_SFF */
612 void __iomem
* const *iomap
;
613 unsigned int n_ports
;
614 unsigned int n_tags
; /* nr of NCQ tags */
616 struct ata_port_operations
*ops
;
619 struct mutex eh_mutex
;
620 struct task_struct
*eh_owner
;
622 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
623 struct ata_port
*ports
[0];
626 struct ata_queued_cmd
{
628 struct ata_device
*dev
;
630 struct scsi_cmnd
*scsicmd
;
631 void (*scsidone
)(struct scsi_cmnd
*);
633 struct ata_taskfile tf
;
634 u8 cdb
[ATAPI_CDB_LEN
];
636 unsigned long flags
; /* ATA_QCFLAG_xxx */
639 unsigned int orig_n_elem
;
643 unsigned int sect_size
;
646 unsigned int extrabytes
;
647 unsigned int curbytes
;
649 struct scatterlist sgent
;
651 struct scatterlist
*sg
;
653 struct scatterlist
*cursg
;
654 unsigned int cursg_ofs
;
656 unsigned int err_mask
;
657 struct ata_taskfile result_tf
;
658 ata_qc_cb_t complete_fn
;
664 struct ata_port_stats
{
665 unsigned long unhandled_irq
;
666 unsigned long idle_irq
;
667 unsigned long rw_reqbuf
;
670 struct ata_ering_entry
{
672 unsigned int err_mask
;
678 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
682 struct ata_link
*link
;
683 unsigned int devno
; /* 0 or 1 */
684 unsigned int horkage
; /* List of broken features */
685 unsigned long flags
; /* ATA_DFLAG_xxx */
686 struct scsi_device
*sdev
; /* attached SCSI device */
688 #ifdef CONFIG_ATA_ACPI
689 union acpi_object
*gtf_cache
;
690 unsigned int gtf_filter
;
692 #ifdef CONFIG_SATA_ZPODD
696 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
697 u64 n_sectors
; /* size of device, if ATA */
698 u64 n_native_sectors
; /* native size, if ATA */
699 unsigned int class; /* ATA_DEV_xxx */
700 unsigned long unpark_deadline
;
705 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
707 unsigned int multi_count
; /* sectors count for
708 READ/WRITE MULTIPLE */
709 unsigned int max_sectors
; /* per-device max sectors */
710 unsigned int cdb_len
;
712 /* per-dev xfer mask */
713 unsigned long pio_mask
;
714 unsigned long mwdma_mask
;
715 unsigned long udma_mask
;
717 /* for CHS addressing */
718 u16 cylinders
; /* Number of cylinders */
719 u16 heads
; /* Number of heads */
720 u16 sectors
; /* Number of sectors per track */
723 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
724 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
725 } ____cacheline_aligned
;
727 /* DEVSLP Timing Variables from Identify Device Data Log */
728 u8 devslp_timing
[ATA_LOG_DEVSLP_SIZE
];
730 /* NCQ send and receive log subcommand support */
731 u8 ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_SIZE
];
735 /* ering is CLEAR_END, read comment above CLEAR_END */
736 struct ata_ering ering
;
739 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
740 * cleared to zero on ata_dev_init().
742 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
743 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
746 struct ata_device
*dev
; /* offending device */
747 u32 serror
; /* SError from LLDD */
748 unsigned int err_mask
; /* port-wide err_mask */
749 unsigned int action
; /* ATA_EH_* action mask */
750 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
751 unsigned int flags
; /* ATA_EHI_* flags */
753 unsigned int probe_mask
;
755 char desc
[ATA_EH_DESC_LEN
];
759 struct ata_eh_context
{
760 struct ata_eh_info i
;
761 int tries
[ATA_MAX_DEVICES
];
762 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
763 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
764 unsigned int classes
[ATA_MAX_DEVICES
];
765 unsigned int did_probe_mask
;
766 unsigned int unloaded_mask
;
767 unsigned int saved_ncq_enabled
;
768 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
769 /* timestamp for the last reset attempt or success */
770 unsigned long last_reset
;
773 struct ata_acpi_drive
779 struct ata_acpi_gtm
{
780 struct ata_acpi_drive drive
[2];
786 int pmp
; /* port multiplier port # */
789 unsigned int active_tag
; /* active tag on this link */
790 u32 sactive
; /* active NCQ commands */
792 unsigned int flags
; /* ATA_LFLAG_xxx */
794 u32 saved_scontrol
; /* SControl on probe */
795 unsigned int hw_sata_spd_limit
;
796 unsigned int sata_spd_limit
;
797 unsigned int sata_spd
; /* current SATA PHY speed */
798 enum ata_lpm_policy lpm_policy
;
800 /* record runtime error info, protected by host_set lock */
801 struct ata_eh_info eh_info
;
803 struct ata_eh_context eh_context
;
805 struct ata_device device
[ATA_MAX_DEVICES
];
807 unsigned long last_lpm_change
; /* when last LPM change happened */
809 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
810 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
813 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
814 struct ata_port_operations
*ops
;
816 /* Flags owned by the EH context. Only EH should touch these once the
818 unsigned long flags
; /* ATA_FLAG_xxx */
819 /* Flags that change dynamically, protected by ap->lock */
820 unsigned int pflags
; /* ATA_PFLAG_xxx */
821 unsigned int print_id
; /* user visible unique port ID */
822 unsigned int local_port_no
; /* host local port num */
823 unsigned int port_no
; /* 0 based port no. inside the host */
825 #ifdef CONFIG_ATA_SFF
826 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
827 u8 ctl
; /* cache of ATA control register */
828 u8 last_ctl
; /* Cache last written value */
829 struct ata_link
* sff_pio_task_link
; /* link currently used */
830 struct delayed_work sff_pio_task
;
831 #ifdef CONFIG_ATA_BMDMA
832 struct ata_bmdma_prd
*bmdma_prd
; /* BMDMA SG list */
833 dma_addr_t bmdma_prd_dma
; /* and its DMA mapping */
834 #endif /* CONFIG_ATA_BMDMA */
835 #endif /* CONFIG_ATA_SFF */
837 unsigned int pio_mask
;
838 unsigned int mwdma_mask
;
839 unsigned int udma_mask
;
840 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
842 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
843 unsigned long sas_tag_allocated
; /* for sas tag allocation only */
844 unsigned int qc_active
;
845 int nr_active_links
; /* #links with active qcs */
846 unsigned int sas_last_tag
; /* track next tag hw expects */
848 struct ata_link link
; /* host default link */
849 struct ata_link
*slave_link
; /* see ata_slave_link_init() */
851 int nr_pmp_links
; /* nr of available PMP links */
852 struct ata_link
*pmp_link
; /* array of PMP links */
853 struct ata_link
*excl_link
; /* for PMP qc exclusion */
855 struct ata_port_stats stats
;
856 struct ata_host
*host
;
860 struct mutex scsi_scan_mutex
;
861 struct delayed_work hotplug_task
;
862 struct work_struct scsi_rescan_task
;
864 unsigned int hsm_task_state
;
867 struct list_head eh_done_q
;
868 wait_queue_head_t eh_wait_q
;
870 struct completion park_req_pending
;
872 pm_message_t pm_mesg
;
873 enum ata_lpm_policy target_lpm_policy
;
875 struct timer_list fastdrain_timer
;
876 unsigned long fastdrain_cnt
;
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 void (*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_device
*dev
,
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 const unsigned long sata_deb_timing_normal
[];
1028 extern const unsigned long sata_deb_timing_hotplug
[];
1029 extern const unsigned long sata_deb_timing_long
[];
1031 extern struct ata_port_operations ata_dummy_port_ops
;
1032 extern const struct ata_port_info ata_dummy_port_info
;
1037 static inline unsigned int ata_prot_flags(u8 prot
)
1040 case ATA_PROT_NODATA
:
1043 return ATA_PROT_FLAG_PIO
;
1045 return ATA_PROT_FLAG_DMA
;
1047 return ATA_PROT_FLAG_DMA
| ATA_PROT_FLAG_NCQ
;
1048 case ATAPI_PROT_NODATA
:
1049 return ATA_PROT_FLAG_ATAPI
;
1050 case ATAPI_PROT_PIO
:
1051 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_PIO
;
1052 case ATAPI_PROT_DMA
:
1053 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_DMA
;
1058 static inline int ata_is_atapi(u8 prot
)
1060 return ata_prot_flags(prot
) & ATA_PROT_FLAG_ATAPI
;
1063 static inline int ata_is_nodata(u8 prot
)
1065 return !(ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
);
1068 static inline int ata_is_pio(u8 prot
)
1070 return ata_prot_flags(prot
) & ATA_PROT_FLAG_PIO
;
1073 static inline int ata_is_dma(u8 prot
)
1075 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DMA
;
1078 static inline int ata_is_ncq(u8 prot
)
1080 return ata_prot_flags(prot
) & ATA_PROT_FLAG_NCQ
;
1083 static inline int ata_is_data(u8 prot
)
1085 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
;
1088 static inline int is_multi_taskfile(struct ata_taskfile
*tf
)
1090 return (tf
->command
== ATA_CMD_READ_MULTI
) ||
1091 (tf
->command
== ATA_CMD_WRITE_MULTI
) ||
1092 (tf
->command
== ATA_CMD_READ_MULTI_EXT
) ||
1093 (tf
->command
== ATA_CMD_WRITE_MULTI_EXT
) ||
1094 (tf
->command
== ATA_CMD_WRITE_MULTI_FUA_EXT
);
1097 static inline const unsigned long *
1098 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
1100 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
1101 return sata_deb_timing_hotplug
;
1103 return sata_deb_timing_normal
;
1106 static inline int ata_port_is_dummy(struct ata_port
*ap
)
1108 return ap
->ops
== &ata_dummy_port_ops
;
1111 extern int sata_set_spd(struct ata_link
*link
);
1112 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
1113 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
1114 int (*check_ready
)(struct ata_link
*link
));
1115 extern int sata_link_debounce(struct ata_link
*link
,
1116 const unsigned long *params
, unsigned long deadline
);
1117 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
1118 unsigned long deadline
);
1119 extern int sata_link_scr_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
1121 extern int sata_link_hardreset(struct ata_link
*link
,
1122 const unsigned long *timing
, unsigned long deadline
,
1123 bool *online
, int (*check_ready
)(struct ata_link
*));
1124 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
1125 unsigned long deadline
);
1126 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
1128 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
1129 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
1130 const struct ata_port_info
* const * ppi
, int n_ports
);
1131 extern int ata_slave_link_init(struct ata_port
*ap
);
1132 extern int ata_host_start(struct ata_host
*host
);
1133 extern int ata_host_register(struct ata_host
*host
,
1134 struct scsi_host_template
*sht
);
1135 extern int ata_host_activate(struct ata_host
*host
, int irq
,
1136 irq_handler_t irq_handler
, unsigned long irq_flags
,
1137 struct scsi_host_template
*sht
);
1138 extern void ata_host_detach(struct ata_host
*host
);
1139 extern void ata_host_init(struct ata_host
*, struct device
*, struct ata_port_operations
*);
1140 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
1141 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
1142 extern int ata_scsi_queuecmd(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
1143 extern int ata_sas_scsi_ioctl(struct ata_port
*ap
, struct scsi_device
*dev
,
1144 int cmd
, void __user
*arg
);
1145 extern void ata_sas_port_destroy(struct ata_port
*);
1146 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
1147 struct ata_port_info
*, struct Scsi_Host
*);
1148 extern void ata_sas_async_probe(struct ata_port
*ap
);
1149 extern int ata_sas_sync_probe(struct ata_port
*ap
);
1150 extern int ata_sas_port_init(struct ata_port
*);
1151 extern int ata_sas_port_start(struct ata_port
*ap
);
1152 extern void ata_sas_port_stop(struct ata_port
*ap
);
1153 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
1154 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, struct ata_port
*ap
);
1155 extern int sata_scr_valid(struct ata_link
*link
);
1156 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
1157 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
1158 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
1159 extern bool ata_link_online(struct ata_link
*link
);
1160 extern bool ata_link_offline(struct ata_link
*link
);
1162 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
1163 extern void ata_host_resume(struct ata_host
*host
);
1164 extern void ata_sas_port_suspend(struct ata_port
*ap
);
1165 extern void ata_sas_port_resume(struct ata_port
*ap
);
1167 static inline void ata_sas_port_suspend(struct ata_port
*ap
)
1170 static inline void ata_sas_port_resume(struct ata_port
*ap
)
1174 extern int ata_ratelimit(void);
1175 extern void ata_msleep(struct ata_port
*ap
, unsigned int msecs
);
1176 extern u32
ata_wait_register(struct ata_port
*ap
, void __iomem
*reg
, u32 mask
,
1177 u32 val
, unsigned long interval
, unsigned long timeout
);
1178 extern int atapi_cmd_type(u8 opcode
);
1179 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
1180 u8 pmp
, int is_cmd
, u8
*fis
);
1181 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
1182 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
1183 unsigned long mwdma_mask
, unsigned long udma_mask
);
1184 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
1185 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
1186 unsigned long *udma_mask
);
1187 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
1188 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
1189 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
1190 extern const char *ata_mode_string(unsigned long xfer_mask
);
1191 extern unsigned long ata_id_xfermask(const u16
*id
);
1192 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
1193 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
1194 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
1195 unsigned int n_elem
);
1196 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
1197 extern void ata_dev_disable(struct ata_device
*adev
);
1198 extern void ata_id_string(const u16
*id
, unsigned char *s
,
1199 unsigned int ofs
, unsigned int len
);
1200 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
1201 unsigned int ofs
, unsigned int len
);
1202 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
1203 struct ata_taskfile
*tf
, u16
*id
);
1204 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
1205 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
);
1206 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
);
1207 extern int ata_std_bios_param(struct scsi_device
*sdev
,
1208 struct block_device
*bdev
,
1209 sector_t capacity
, int geom
[]);
1210 extern void ata_scsi_unlock_native_capacity(struct scsi_device
*sdev
);
1211 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
1212 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
1213 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
1215 extern int __ata_change_queue_depth(struct ata_port
*ap
, struct scsi_device
*sdev
,
1217 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
1218 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
1219 extern void ata_scsi_port_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
);
1220 extern void ata_scsi_cmd_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
, struct list_head
*eh_q
);
1221 extern bool sata_lpm_ignore_phy_events(struct ata_link
*link
);
1223 extern int ata_cable_40wire(struct ata_port
*ap
);
1224 extern int ata_cable_80wire(struct ata_port
*ap
);
1225 extern int ata_cable_sata(struct ata_port
*ap
);
1226 extern int ata_cable_ignore(struct ata_port
*ap
);
1227 extern int ata_cable_unknown(struct ata_port
*ap
);
1229 /* Timing helpers */
1230 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
1231 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
1232 extern int ata_timing_compute(struct ata_device
*, unsigned short,
1233 struct ata_timing
*, int, int);
1234 extern void ata_timing_merge(const struct ata_timing
*,
1235 const struct ata_timing
*, struct ata_timing
*,
1237 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
1244 unsigned int reg
; /* PCI config register to read */
1245 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1250 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1251 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1254 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1255 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1256 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1257 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1258 #endif /* CONFIG_PM */
1259 #endif /* CONFIG_PCI */
1261 struct platform_device
;
1263 extern int ata_platform_remove_one(struct platform_device
*pdev
);
1266 * ACPI - drivers/ata/libata-acpi.c
1268 #ifdef CONFIG_ATA_ACPI
1269 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1271 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1272 return &ap
->__acpi_init_gtm
;
1275 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1276 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1277 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1278 const struct ata_acpi_gtm
*gtm
);
1279 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1281 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1286 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1287 struct ata_acpi_gtm
*stm
)
1292 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1293 struct ata_acpi_gtm
*stm
)
1298 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1299 const struct ata_acpi_gtm
*gtm
)
1304 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1305 const struct ata_acpi_gtm
*gtm
)
1312 * EH - drivers/ata/libata-eh.c
1314 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1315 extern void ata_port_wait_eh(struct ata_port
*ap
);
1316 extern int ata_link_abort(struct ata_link
*link
);
1317 extern int ata_port_abort(struct ata_port
*ap
);
1318 extern int ata_port_freeze(struct ata_port
*ap
);
1319 extern int sata_async_notification(struct ata_port
*ap
);
1321 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1322 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1324 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1325 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1326 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1328 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1329 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1330 ata_postreset_fn_t postreset
);
1331 extern void ata_std_error_handler(struct ata_port
*ap
);
1332 extern void ata_std_sched_eh(struct ata_port
*ap
);
1333 extern void ata_std_end_eh(struct ata_port
*ap
);
1334 extern int ata_link_nr_enabled(struct ata_link
*link
);
1337 * Base operations to inherit from and initializers for sht
1341 * base : Common to all libata drivers.
1342 * sata : SATA controllers w/ native interface.
1343 * pmp : SATA controllers w/ PMP support.
1344 * sff : SFF ATA controllers w/o BMDMA support.
1345 * bmdma : SFF ATA controllers w/ BMDMA support.
1349 * BASE : Common to all libata drivers. The user must set
1350 * sg_tablesize and dma_boundary.
1351 * PIO : SFF ATA controllers w/ only PIO support.
1352 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1353 * dma_boundary are set to BMDMA limits.
1354 * NCQ : SATA controllers supporting NCQ. The user must set
1355 * sg_tablesize, dma_boundary and can_queue.
1357 extern const struct ata_port_operations ata_base_port_ops
;
1358 extern const struct ata_port_operations sata_port_ops
;
1359 extern struct device_attribute
*ata_common_sdev_attrs
[];
1362 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1363 * by the edge drivers. Because the 'module' field of sht must be the
1364 * edge driver's module reference, otherwise the driver can be unloaded
1365 * even if the scsi_device is being accessed.
1367 #define ATA_BASE_SHT(drv_name) \
1368 .module = THIS_MODULE, \
1370 .ioctl = ata_scsi_ioctl, \
1371 .queuecommand = ata_scsi_queuecmd, \
1372 .can_queue = ATA_DEF_QUEUE, \
1373 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1374 .this_id = ATA_SHT_THIS_ID, \
1375 .emulated = ATA_SHT_EMULATED, \
1376 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1377 .proc_name = drv_name, \
1378 .slave_configure = ata_scsi_slave_config, \
1379 .slave_destroy = ata_scsi_slave_destroy, \
1380 .bios_param = ata_std_bios_param, \
1381 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1382 .sdev_attrs = ata_common_sdev_attrs
1384 #define ATA_NCQ_SHT(drv_name) \
1385 ATA_BASE_SHT(drv_name), \
1386 .change_queue_depth = ata_scsi_change_queue_depth
1391 #ifdef CONFIG_SATA_PMP
1392 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1394 return ap
->flags
& ATA_FLAG_PMP
;
1397 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1399 return ap
->nr_pmp_links
!= 0;
1402 static inline int ata_is_host_link(const struct ata_link
*link
)
1404 return link
== &link
->ap
->link
|| link
== link
->ap
->slave_link
;
1406 #else /* CONFIG_SATA_PMP */
1407 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1412 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1417 static inline int ata_is_host_link(const struct ata_link
*link
)
1421 #endif /* CONFIG_SATA_PMP */
1423 static inline int sata_srst_pmp(struct ata_link
*link
)
1425 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1426 return SATA_PMP_CTRL_PORT
;
1434 void ata_port_printk(const struct ata_port
*ap
, const char *level
,
1435 const char *fmt
, ...);
1437 void ata_link_printk(const struct ata_link
*link
, const char *level
,
1438 const char *fmt
, ...);
1440 void ata_dev_printk(const struct ata_device
*dev
, const char *level
,
1441 const char *fmt
, ...);
1443 #define ata_port_err(ap, fmt, ...) \
1444 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1445 #define ata_port_warn(ap, fmt, ...) \
1446 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1447 #define ata_port_notice(ap, fmt, ...) \
1448 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1449 #define ata_port_info(ap, fmt, ...) \
1450 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1451 #define ata_port_dbg(ap, fmt, ...) \
1452 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1454 #define ata_link_err(link, fmt, ...) \
1455 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1456 #define ata_link_warn(link, fmt, ...) \
1457 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1458 #define ata_link_notice(link, fmt, ...) \
1459 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1460 #define ata_link_info(link, fmt, ...) \
1461 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1462 #define ata_link_dbg(link, fmt, ...) \
1463 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1465 #define ata_dev_err(dev, fmt, ...) \
1466 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1467 #define ata_dev_warn(dev, fmt, ...) \
1468 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1469 #define ata_dev_notice(dev, fmt, ...) \
1470 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1471 #define ata_dev_info(dev, fmt, ...) \
1472 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1473 #define ata_dev_dbg(dev, fmt, ...) \
1474 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1476 void ata_print_version(const struct device
*dev
, const char *version
);
1479 * ata_eh_info helpers
1481 extern __printf(2, 3)
1482 void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1483 extern __printf(2, 3)
1484 void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1485 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1487 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1489 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1490 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1491 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1492 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1496 * port description helpers
1498 extern __printf(2, 3)
1499 void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...);
1501 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1505 static inline unsigned int ata_tag_valid(unsigned int tag
)
1507 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1510 static inline unsigned int ata_tag_internal(unsigned int tag
)
1512 return tag
== ATA_TAG_INTERNAL
;
1518 static inline unsigned int ata_class_enabled(unsigned int class)
1520 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1521 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
||
1522 class == ATA_DEV_ZAC
;
1525 static inline unsigned int ata_class_disabled(unsigned int class)
1527 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1528 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
||
1529 class == ATA_DEV_ZAC_UNSUP
;
1532 static inline unsigned int ata_class_absent(unsigned int class)
1534 return !ata_class_enabled(class) && !ata_class_disabled(class);
1537 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1539 return ata_class_enabled(dev
->class);
1542 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1544 return ata_class_disabled(dev
->class);
1547 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1549 return ata_class_absent(dev
->class);
1555 static inline int ata_link_max_devices(const struct ata_link
*link
)
1557 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1562 static inline int ata_link_active(struct ata_link
*link
)
1564 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1570 * ATA_LITER_* constants are used to select link iteration mode and
1571 * ATA_DITER_* device iteration mode.
1573 * For a custom iteration directly using ata_{link|dev}_next(), if
1574 * @link or @dev, respectively, is NULL, the first element is
1575 * returned. @dev and @link can be any valid device or link and the
1576 * next element according to the iteration mode will be returned.
1577 * After the last element, NULL is returned.
1579 enum ata_link_iter_mode
{
1580 ATA_LITER_EDGE
, /* if present, PMP links only; otherwise,
1581 * host link. no slave link */
1582 ATA_LITER_HOST_FIRST
, /* host link followed by PMP or slave links */
1583 ATA_LITER_PMP_FIRST
, /* PMP links followed by host link,
1584 * slave link still comes after host link */
1587 enum ata_dev_iter_mode
{
1589 ATA_DITER_ENABLED_REVERSE
,
1591 ATA_DITER_ALL_REVERSE
,
1594 extern struct ata_link
*ata_link_next(struct ata_link
*link
,
1595 struct ata_port
*ap
,
1596 enum ata_link_iter_mode mode
);
1598 extern struct ata_device
*ata_dev_next(struct ata_device
*dev
,
1599 struct ata_link
*link
,
1600 enum ata_dev_iter_mode mode
);
1603 * Shortcut notation for iterations
1605 * ata_for_each_link() iterates over each link of @ap according to
1606 * @mode. @link points to the current link in the loop. @link is
1607 * NULL after loop termination. ata_for_each_dev() works the same way
1608 * except that it iterates over each device of @link.
1610 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1611 * specified when using the following shorthand notations. Only the
1612 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1613 * specified. This not only increases brevity but also makes it
1614 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1616 #define ata_for_each_link(link, ap, mode) \
1617 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1618 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1620 #define ata_for_each_dev(dev, link, mode) \
1621 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1622 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1625 * ata_ncq_enabled - Test whether NCQ is enabled
1626 * @dev: ATA device to test for
1629 * spin_lock_irqsave(host lock)
1632 * 1 if NCQ is enabled for @dev, 0 otherwise.
1634 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1636 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1637 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1640 static inline bool ata_fpdma_dsm_supported(struct ata_device
*dev
)
1642 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1643 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET
] &
1644 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM
);
1647 static inline bool ata_fpdma_read_log_supported(struct ata_device
*dev
)
1649 return (dev
->flags
& ATA_DFLAG_NCQ_SEND_RECV
) &&
1650 (dev
->ncq_send_recv_cmds
[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET
] &
1651 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED
);
1654 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1656 qc
->tf
.ctl
|= ATA_NIEN
;
1659 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1662 if (likely(ata_tag_valid(tag
)))
1663 return &ap
->qcmd
[tag
];
1667 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1670 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1672 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1675 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1676 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1682 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1684 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1687 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1689 memset(tf
, 0, sizeof(*tf
));
1691 #ifdef CONFIG_ATA_SFF
1692 tf
->ctl
= dev
->link
->ap
->ctl
;
1694 tf
->ctl
= ATA_DEVCTL_OBS
;
1696 if (dev
->devno
== 0)
1697 tf
->device
= ATA_DEVICE_OBS
;
1699 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1702 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1704 qc
->dma_dir
= DMA_NONE
;
1709 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1712 qc
->sect_size
= ATA_SECT_SIZE
;
1714 ata_tf_init(qc
->dev
, &qc
->tf
);
1716 /* init result_tf such that it indicates normal completion */
1717 qc
->result_tf
.command
= ATA_DRDY
;
1718 qc
->result_tf
.feature
= 0;
1721 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1723 return ata_id_wcache_enabled(dev
->id
) ||
1724 ata_id_has_flush(dev
->id
) ||
1725 ata_id_has_flush_ext(dev
->id
);
1728 static inline unsigned int ac_err_mask(u8 status
)
1730 if (status
& (ATA_BUSY
| ATA_DRQ
))
1732 if (status
& (ATA_ERR
| ATA_DF
))
1737 static inline unsigned int __ac_err_mask(u8 status
)
1739 unsigned int mask
= ac_err_mask(status
);
1741 return AC_ERR_OTHER
;
1745 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1747 return *(struct ata_port
**)&host
->hostdata
[0];
1750 static inline int ata_check_ready(u8 status
)
1752 if (!(status
& ATA_BUSY
))
1755 /* 0xff indicates either no device or device not ready */
1762 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1763 unsigned long timeout_msecs
)
1765 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1768 /* Don't open code these in drivers as there are traps. Firstly the range may
1769 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1770 > UDMA_0. Dyma ddreigiau */
1772 static inline int ata_using_mwdma(struct ata_device
*adev
)
1774 if (adev
->dma_mode
>= XFER_MW_DMA_0
&& adev
->dma_mode
<= XFER_MW_DMA_4
)
1779 static inline int ata_using_udma(struct ata_device
*adev
)
1781 if (adev
->dma_mode
>= XFER_UDMA_0
&& adev
->dma_mode
<= XFER_UDMA_7
)
1786 static inline int ata_dma_enabled(struct ata_device
*adev
)
1788 return (adev
->dma_mode
== 0xFF ? 0 : 1);
1791 /**************************************************************************
1792 * PMP - drivers/ata/libata-pmp.c
1794 #ifdef CONFIG_SATA_PMP
1796 extern const struct ata_port_operations sata_pmp_port_ops
;
1798 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1799 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1801 #else /* CONFIG_SATA_PMP */
1803 #define sata_pmp_port_ops sata_port_ops
1804 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1805 #define sata_pmp_error_handler ata_std_error_handler
1807 #endif /* CONFIG_SATA_PMP */
1810 /**************************************************************************
1811 * SFF - drivers/ata/libata-sff.c
1813 #ifdef CONFIG_ATA_SFF
1815 extern const struct ata_port_operations ata_sff_port_ops
;
1816 extern const struct ata_port_operations ata_bmdma32_port_ops
;
1818 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1819 #define ATA_PIO_SHT(drv_name) \
1820 ATA_BASE_SHT(drv_name), \
1821 .sg_tablesize = LIBATA_MAX_PRD, \
1822 .dma_boundary = ATA_DMA_BOUNDARY
1824 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1825 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1826 extern void ata_sff_pause(struct ata_port
*ap
);
1827 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1828 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1829 unsigned long timeout_pat
, unsigned long timeout
);
1830 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1831 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1832 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1833 extern void ata_sff_exec_command(struct ata_port
*ap
,
1834 const struct ata_taskfile
*tf
);
1835 extern unsigned int ata_sff_data_xfer(struct ata_device
*dev
,
1836 unsigned char *buf
, unsigned int buflen
, int rw
);
1837 extern unsigned int ata_sff_data_xfer32(struct ata_device
*dev
,
1838 unsigned char *buf
, unsigned int buflen
, int rw
);
1839 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device
*dev
,
1840 unsigned char *buf
, unsigned int buflen
, int rw
);
1841 extern void ata_sff_irq_on(struct ata_port
*ap
);
1842 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1843 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1844 u8 status
, int in_wq
);
1845 extern void ata_sff_queue_work(struct work_struct
*work
);
1846 extern void ata_sff_queue_delayed_work(struct delayed_work
*dwork
,
1847 unsigned long delay
);
1848 extern void ata_sff_queue_pio_task(struct ata_link
*link
, unsigned long delay
);
1849 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1850 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1851 extern unsigned int ata_sff_port_intr(struct ata_port
*ap
,
1852 struct ata_queued_cmd
*qc
);
1853 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1854 extern void ata_sff_lost_interrupt(struct ata_port
*ap
);
1855 extern void ata_sff_freeze(struct ata_port
*ap
);
1856 extern void ata_sff_thaw(struct ata_port
*ap
);
1857 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1858 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1860 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1861 unsigned long deadline
);
1862 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1863 unsigned long deadline
);
1864 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1865 unsigned long deadline
);
1866 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1867 extern void ata_sff_drain_fifo(struct ata_queued_cmd
*qc
);
1868 extern void ata_sff_error_handler(struct ata_port
*ap
);
1869 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1871 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1872 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1873 const struct ata_port_info
* const * ppi
,
1874 struct ata_host
**r_host
);
1875 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1876 irq_handler_t irq_handler
,
1877 struct scsi_host_template
*sht
);
1878 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1879 const struct ata_port_info
* const * ppi
,
1880 struct scsi_host_template
*sht
, void *host_priv
, int hflags
);
1881 #endif /* CONFIG_PCI */
1883 #ifdef CONFIG_ATA_BMDMA
1885 extern const struct ata_port_operations ata_bmdma_port_ops
;
1887 #define ATA_BMDMA_SHT(drv_name) \
1888 ATA_BASE_SHT(drv_name), \
1889 .sg_tablesize = LIBATA_MAX_PRD, \
1890 .dma_boundary = ATA_DMA_BOUNDARY
1892 extern void ata_bmdma_qc_prep(struct ata_queued_cmd
*qc
);
1893 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd
*qc
);
1894 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1895 extern unsigned int ata_bmdma_port_intr(struct ata_port
*ap
,
1896 struct ata_queued_cmd
*qc
);
1897 extern irqreturn_t
ata_bmdma_interrupt(int irq
, void *dev_instance
);
1898 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
1899 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
1900 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
1901 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1902 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1903 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1904 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1905 extern int ata_bmdma_port_start(struct ata_port
*ap
);
1906 extern int ata_bmdma_port_start32(struct ata_port
*ap
);
1909 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1910 extern void ata_pci_bmdma_init(struct ata_host
*host
);
1911 extern int ata_pci_bmdma_prepare_host(struct pci_dev
*pdev
,
1912 const struct ata_port_info
* const * ppi
,
1913 struct ata_host
**r_host
);
1914 extern int ata_pci_bmdma_init_one(struct pci_dev
*pdev
,
1915 const struct ata_port_info
* const * ppi
,
1916 struct scsi_host_template
*sht
,
1917 void *host_priv
, int hflags
);
1918 #endif /* CONFIG_PCI */
1919 #endif /* CONFIG_ATA_BMDMA */
1922 * ata_sff_busy_wait - Wait for a port status register
1923 * @ap: Port to wait for.
1924 * @bits: bits that must be clear
1925 * @max: number of 10uS waits to perform
1927 * Waits up to max*10 microseconds for the selected bits in the port's
1928 * status register to be cleared.
1929 * Returns final value of status register.
1932 * Inherited from caller.
1934 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1941 status
= ap
->ops
->sff_check_status(ap
);
1943 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1949 * ata_wait_idle - Wait for a port to be idle.
1950 * @ap: Port to wait for.
1952 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1953 * Returns final value of status register.
1956 * Inherited from caller.
1958 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1960 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1963 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1964 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1970 #endif /* CONFIG_ATA_SFF */
1972 #endif /* __LINUX_LIBATA_H__ */