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 /* NEW: debug levels */
78 #define HAVE_LIBATA_MSG 1
82 ATA_MSG_INFO
= 0x0002,
83 ATA_MSG_PROBE
= 0x0004,
84 ATA_MSG_WARN
= 0x0008,
85 ATA_MSG_MALLOC
= 0x0010,
87 ATA_MSG_INTR
= 0x0040,
91 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
92 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
93 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
94 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
95 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
96 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
97 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
98 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
100 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
102 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
103 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
106 return (1 << dval
) - 1;
109 /* defines only for the constants which don't work well as enums */
110 #define ATA_TAG_POISON 0xfafbfcfdU
113 /* various global constants */
114 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
115 LIBATA_DUMB_MAX_PRD
= ATA_MAX_PRD
/ 4, /* Worst case */
117 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
119 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
- 1,
120 ATA_SHORT_PAUSE
= 16,
122 ATAPI_MAX_DRAIN
= 16 << 10,
124 ATA_ALL_DEVICES
= (1 << ATA_MAX_DEVICES
) - 1,
126 ATA_SHT_EMULATED
= 1,
127 ATA_SHT_CMD_PER_LUN
= 1,
128 ATA_SHT_THIS_ID
= -1,
129 ATA_SHT_USE_CLUSTERING
= 1,
131 /* struct ata_device stuff */
132 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
133 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
134 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
135 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
136 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
137 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
138 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
139 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
140 ATA_DFLAG_HIPM
= (1 << 8), /* device supports HIPM */
141 ATA_DFLAG_DIPM
= (1 << 9), /* device supports DIPM */
142 ATA_DFLAG_DMADIR
= (1 << 10), /* device requires DMADIR */
143 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
145 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
146 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
147 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
148 ATA_DFLAG_DUBIOUS_XFER
= (1 << 16), /* data transfer not verified */
149 ATA_DFLAG_NO_UNLOAD
= (1 << 17), /* device doesn't support unload */
150 ATA_DFLAG_UNLOCK_HPA
= (1 << 18), /* unlock HPA */
151 ATA_DFLAG_INIT_MASK
= (1 << 24) - 1,
153 ATA_DFLAG_DETACH
= (1 << 24),
154 ATA_DFLAG_DETACHED
= (1 << 25),
156 ATA_DEV_UNKNOWN
= 0, /* unknown device */
157 ATA_DEV_ATA
= 1, /* ATA device */
158 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
159 ATA_DEV_ATAPI
= 3, /* ATAPI device */
160 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
161 ATA_DEV_PMP
= 5, /* SATA port multiplier */
162 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
163 ATA_DEV_SEMB
= 7, /* SEMB */
164 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
165 ATA_DEV_NONE
= 9, /* no device */
167 /* struct ata_link flags */
168 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
169 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
170 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
171 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
172 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
173 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
174 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
175 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
176 ATA_LFLAG_NO_LPM
= (1 << 8), /* disable LPM on this link */
178 /* struct ata_port flags */
179 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
180 /* (doesn't imply presence) */
181 ATA_FLAG_SATA
= (1 << 1),
182 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
183 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
184 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
185 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
186 * doesn't handle PIO interrupts */
187 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
188 ATA_FLAG_NO_POWEROFF_SPINDOWN
= (1 << 11), /* don't spindown before poweroff */
189 ATA_FLAG_NO_HIBERNATE_SPINDOWN
= (1 << 12), /* don't spindown before hibernation */
190 ATA_FLAG_DEBUGMSG
= (1 << 13),
191 ATA_FLAG_FPDMA_AA
= (1 << 14), /* driver supports Auto-Activate */
192 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
193 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
194 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
195 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
196 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
197 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
199 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
202 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
205 /* struct ata_port pflags */
206 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
207 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
208 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
209 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
210 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
211 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
212 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
213 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
214 ATA_PFLAG_UNLOADING
= (1 << 9), /* driver is being unloaded */
215 ATA_PFLAG_UNLOADED
= (1 << 10), /* driver is unloaded */
217 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
218 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
219 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
221 ATA_PFLAG_PIO32
= (1 << 20), /* 32bit PIO */
222 ATA_PFLAG_PIO32CHANGE
= (1 << 21), /* 32bit PIO can be turned on/off */
224 /* struct ata_queued_cmd flags */
225 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
226 ATA_QCFLAG_DMAMAP
= (1 << 1), /* SG table is DMA mapped */
227 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
228 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
229 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
230 ATA_QCFLAG_QUIET
= (1 << 6), /* don't report device error */
231 ATA_QCFLAG_RETRY
= (1 << 7), /* retry after failure */
233 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
234 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
235 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
238 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
239 ATA_HOST_STARTED
= (1 << 1), /* Host started */
240 ATA_HOST_PARALLEL_SCAN
= (1 << 2), /* Ports on this host can be scanned in parallel */
242 /* bits 24:31 of host->flags are reserved for LLD specific flags */
244 /* various lengths of time */
245 ATA_TMOUT_BOOT
= 30000, /* heuristic */
246 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
247 ATA_TMOUT_INTERNAL_QUICK
= 5000,
248 ATA_TMOUT_MAX_PARK
= 30000,
251 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
252 * is too much without parallel probing. Use 2s if parallel
253 * probing is available, 800ms otherwise.
255 ATA_TMOUT_FF_WAIT_LONG
= 2000,
256 ATA_TMOUT_FF_WAIT
= 800,
258 /* Spec mandates to wait for ">= 2ms" before checking status
259 * after reset. We wait 150ms, because that was the magic
260 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
261 * the period of time between when the ATA command register is
262 * written, and then status is checked. Because waiting for
263 * "a while" before checking status is fine, post SRST, we
264 * perform this magic delay here as well.
266 * Old drivers/ide uses the 2mS rule and then waits for ready.
268 ATA_WAIT_AFTER_RESET
= 150,
270 /* If PMP is supported, we have to do follow-up SRST. As some
271 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
272 * advised to wait only for the following duration before
275 ATA_TMOUT_PMP_SRST_WAIT
= 5000,
289 /* SATA port states */
294 /* encoding various smaller bitmaps into a single
295 * unsigned long bitmap
297 ATA_NR_PIO_MODES
= 7,
298 ATA_NR_MWDMA_MODES
= 5,
299 ATA_NR_UDMA_MODES
= 8,
302 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
303 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
305 /* size of buffer to pad xfers ending on unaligned boundaries */
311 /* return values for ->qc_defer */
315 /* desc_len for ata_eh_info and context */
316 ATA_EH_DESC_LEN
= 80,
318 /* reset / recovery action types */
319 ATA_EH_REVALIDATE
= (1 << 0),
320 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
321 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
322 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
323 ATA_EH_ENABLE_LINK
= (1 << 3),
324 ATA_EH_PARK
= (1 << 5), /* unload heads and stop I/O */
326 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
| ATA_EH_PARK
,
327 ATA_EH_ALL_ACTIONS
= ATA_EH_REVALIDATE
| ATA_EH_RESET
|
330 /* ata_eh_info->flags */
331 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
332 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
333 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
334 ATA_EHI_NO_RECOVERY
= (1 << 4), /* no recovery */
336 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
337 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
338 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
339 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
340 ATA_EHI_POST_SETMODE
= (1 << 20), /* revalidating after setmode */
342 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
344 /* mask of flags to transfer *to* the slave link */
345 ATA_EHI_TO_SLAVE_MASK
= ATA_EHI_NO_AUTOPSY
| ATA_EHI_QUIET
,
347 /* max tries if error condition is still set after ->error_handler */
348 ATA_EH_MAX_TRIES
= 5,
350 /* sometimes resuming a link requires several retries */
351 ATA_LINK_RESUME_TRIES
= 5,
353 /* how hard are we gonna try to probe/recover devices */
354 ATA_PROBE_MAX_TRIES
= 3,
355 ATA_EH_DEV_TRIES
= 3,
356 ATA_EH_PMP_TRIES
= 5,
357 ATA_EH_PMP_LINK_TRIES
= 3,
359 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
361 /* This should match the actual table size of
362 * ata_eh_cmd_timeout_table in libata-eh.c.
364 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 6,
366 /* Horkage types. May be set by libata or controller on drives
367 (some horkage may be drive/controller pair dependant */
369 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
370 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
371 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
372 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
373 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
374 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
375 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
376 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
377 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
378 ATA_HORKAGE_BRIDGE_OK
= (1 << 10), /* no bridge limits */
379 ATA_HORKAGE_ATAPI_MOD16_DMA
= (1 << 11), /* use ATAPI DMA for commands
380 not multiple of 16 bytes */
381 ATA_HORKAGE_FIRMWARE_WARN
= (1 << 12), /* firmware update warning */
382 ATA_HORKAGE_1_5_GBPS
= (1 << 13), /* force 1.5 Gbps */
383 ATA_HORKAGE_NOSETXFER
= (1 << 14), /* skip SETXFER, SATA only */
384 ATA_HORKAGE_BROKEN_FPDMA_AA
= (1 << 15), /* skip AA */
385 ATA_HORKAGE_DUMP_ID
= (1 << 16), /* dump IDENTIFY data */
387 /* DMA mask for user DMA control: User visible values; DO NOT
389 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
390 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
391 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
393 /* ATAPI command types */
394 ATAPI_READ
= 0, /* READs */
395 ATAPI_WRITE
= 1, /* WRITEs */
396 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
397 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
398 ATAPI_MISC
= 4, /* the rest */
400 /* Timing constants */
401 ATA_TIMING_SETUP
= (1 << 0),
402 ATA_TIMING_ACT8B
= (1 << 1),
403 ATA_TIMING_REC8B
= (1 << 2),
404 ATA_TIMING_CYC8B
= (1 << 3),
405 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
407 ATA_TIMING_ACTIVE
= (1 << 4),
408 ATA_TIMING_RECOVER
= (1 << 5),
409 ATA_TIMING_DMACK_HOLD
= (1 << 6),
410 ATA_TIMING_CYCLE
= (1 << 7),
411 ATA_TIMING_UDMA
= (1 << 8),
412 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
413 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
414 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
415 ATA_TIMING_DMACK_HOLD
| ATA_TIMING_CYCLE
|
419 ATA_ACPI_FILTER_SETXFER
= 1 << 0,
420 ATA_ACPI_FILTER_LOCK
= 1 << 1,
421 ATA_ACPI_FILTER_DIPM
= 1 << 2,
422 ATA_ACPI_FILTER_FPDMA_OFFSET
= 1 << 3, /* FPDMA non-zero offset */
423 ATA_ACPI_FILTER_FPDMA_AA
= 1 << 4, /* FPDMA auto activate */
425 ATA_ACPI_FILTER_DEFAULT
= ATA_ACPI_FILTER_SETXFER
|
426 ATA_ACPI_FILTER_LOCK
|
427 ATA_ACPI_FILTER_DIPM
,
431 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
433 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
435 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
439 enum hsm_task_states
{
440 HSM_ST_IDLE
, /* no command on going */
441 HSM_ST_FIRST
, /* (waiting the device to)
442 write CDB or first data block */
443 HSM_ST
, /* (waiting the device to) transfer data */
444 HSM_ST_LAST
, /* (waiting the device to) complete command */
445 HSM_ST_ERR
, /* error */
448 enum ata_completion_errors
{
449 AC_ERR_DEV
= (1 << 0), /* device reported error */
450 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
451 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
452 AC_ERR_MEDIA
= (1 << 3), /* media error */
453 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
454 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
455 AC_ERR_SYSTEM
= (1 << 6), /* system error */
456 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
457 AC_ERR_OTHER
= (1 << 8), /* unknown */
458 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
459 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
463 * Link power management policy: If you alter this, you also need to
464 * alter libata-scsi.c (for the ascii descriptions)
466 enum ata_lpm_policy
{
474 ATA_LPM_EMPTY
= (1 << 0), /* port empty/probing */
475 ATA_LPM_HIPM
= (1 << 1), /* may use HIPM */
478 /* forward declarations */
480 struct ata_port_operations
;
483 struct ata_queued_cmd
;
486 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
487 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
488 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
489 unsigned long deadline
);
490 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
492 extern struct device_attribute dev_attr_link_power_management_policy
;
493 extern struct device_attribute dev_attr_unload_heads
;
494 extern struct device_attribute dev_attr_em_message_type
;
495 extern struct device_attribute dev_attr_em_message
;
496 extern struct device_attribute dev_attr_sw_activity
;
504 #ifdef CONFIG_ATA_SFF
506 void __iomem
*cmd_addr
;
507 void __iomem
*data_addr
;
508 void __iomem
*error_addr
;
509 void __iomem
*feature_addr
;
510 void __iomem
*nsect_addr
;
511 void __iomem
*lbal_addr
;
512 void __iomem
*lbam_addr
;
513 void __iomem
*lbah_addr
;
514 void __iomem
*device_addr
;
515 void __iomem
*status_addr
;
516 void __iomem
*command_addr
;
517 void __iomem
*altstatus_addr
;
518 void __iomem
*ctl_addr
;
519 #ifdef CONFIG_ATA_BMDMA
520 void __iomem
*bmdma_addr
;
521 #endif /* CONFIG_ATA_BMDMA */
522 void __iomem
*scr_addr
;
524 #endif /* CONFIG_ATA_SFF */
529 void __iomem
* const *iomap
;
530 unsigned int n_ports
;
532 struct ata_port_operations
*ops
;
535 struct mutex eh_mutex
;
536 struct task_struct
*eh_owner
;
538 #ifdef CONFIG_ATA_ACPI
539 acpi_handle acpi_handle
;
541 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
542 struct ata_port
*ports
[0];
545 struct ata_queued_cmd
{
547 struct ata_device
*dev
;
549 struct scsi_cmnd
*scsicmd
;
550 void (*scsidone
)(struct scsi_cmnd
*);
552 struct ata_taskfile tf
;
553 u8 cdb
[ATAPI_CDB_LEN
];
555 unsigned long flags
; /* ATA_QCFLAG_xxx */
558 unsigned int orig_n_elem
;
562 unsigned int sect_size
;
565 unsigned int extrabytes
;
566 unsigned int curbytes
;
568 struct scatterlist sgent
;
570 struct scatterlist
*sg
;
572 struct scatterlist
*cursg
;
573 unsigned int cursg_ofs
;
575 unsigned int err_mask
;
576 struct ata_taskfile result_tf
;
577 ata_qc_cb_t complete_fn
;
583 struct ata_port_stats
{
584 unsigned long unhandled_irq
;
585 unsigned long idle_irq
;
586 unsigned long rw_reqbuf
;
589 struct ata_ering_entry
{
591 unsigned int err_mask
;
597 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
601 struct ata_link
*link
;
602 unsigned int devno
; /* 0 or 1 */
603 unsigned int horkage
; /* List of broken features */
604 unsigned long flags
; /* ATA_DFLAG_xxx */
605 struct scsi_device
*sdev
; /* attached SCSI device */
607 #ifdef CONFIG_ATA_ACPI
608 acpi_handle acpi_handle
;
609 union acpi_object
*gtf_cache
;
610 unsigned int gtf_filter
;
613 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
614 u64 n_sectors
; /* size of device, if ATA */
615 u64 n_native_sectors
; /* native size, if ATA */
616 unsigned int class; /* ATA_DEV_xxx */
617 unsigned long unpark_deadline
;
622 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
624 unsigned int multi_count
; /* sectors count for
625 READ/WRITE MULTIPLE */
626 unsigned int max_sectors
; /* per-device max sectors */
627 unsigned int cdb_len
;
629 /* per-dev xfer mask */
630 unsigned long pio_mask
;
631 unsigned long mwdma_mask
;
632 unsigned long udma_mask
;
634 /* for CHS addressing */
635 u16 cylinders
; /* Number of cylinders */
636 u16 heads
; /* Number of heads */
637 u16 sectors
; /* Number of sectors per track */
640 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
641 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
646 /* ering is CLEAR_END, read comment above CLEAR_END */
647 struct ata_ering ering
;
650 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
651 * cleared to zero on ata_dev_init().
653 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
654 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
657 struct ata_device
*dev
; /* offending device */
658 u32 serror
; /* SError from LLDD */
659 unsigned int err_mask
; /* port-wide err_mask */
660 unsigned int action
; /* ATA_EH_* action mask */
661 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
662 unsigned int flags
; /* ATA_EHI_* flags */
664 unsigned int probe_mask
;
666 char desc
[ATA_EH_DESC_LEN
];
670 struct ata_eh_context
{
671 struct ata_eh_info i
;
672 int tries
[ATA_MAX_DEVICES
];
673 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
674 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
675 unsigned int classes
[ATA_MAX_DEVICES
];
676 unsigned int did_probe_mask
;
677 unsigned int unloaded_mask
;
678 unsigned int saved_ncq_enabled
;
679 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
680 /* timestamp for the last reset attempt or success */
681 unsigned long last_reset
;
684 struct ata_acpi_drive
690 struct ata_acpi_gtm
{
691 struct ata_acpi_drive drive
[2];
697 int pmp
; /* port multiplier port # */
700 unsigned int active_tag
; /* active tag on this link */
701 u32 sactive
; /* active NCQ commands */
703 unsigned int flags
; /* ATA_LFLAG_xxx */
705 u32 saved_scontrol
; /* SControl on probe */
706 unsigned int hw_sata_spd_limit
;
707 unsigned int sata_spd_limit
;
708 unsigned int sata_spd
; /* current SATA PHY speed */
709 enum ata_lpm_policy lpm_policy
;
711 /* record runtime error info, protected by host_set lock */
712 struct ata_eh_info eh_info
;
714 struct ata_eh_context eh_context
;
716 struct ata_device device
[ATA_MAX_DEVICES
];
718 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
719 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
722 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
723 struct ata_port_operations
*ops
;
725 /* Flags owned by the EH context. Only EH should touch these once the
727 unsigned long flags
; /* ATA_FLAG_xxx */
728 /* Flags that change dynamically, protected by ap->lock */
729 unsigned int pflags
; /* ATA_PFLAG_xxx */
730 unsigned int print_id
; /* user visible unique port ID */
731 unsigned int port_no
; /* 0 based port no. inside the host */
733 #ifdef CONFIG_ATA_SFF
734 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
735 u8 ctl
; /* cache of ATA control register */
736 u8 last_ctl
; /* Cache last written value */
737 struct ata_link
* sff_pio_task_link
; /* link currently used */
738 struct delayed_work sff_pio_task
;
739 #ifdef CONFIG_ATA_BMDMA
740 struct ata_bmdma_prd
*bmdma_prd
; /* BMDMA SG list */
741 dma_addr_t bmdma_prd_dma
; /* and its DMA mapping */
742 #endif /* CONFIG_ATA_BMDMA */
743 #endif /* CONFIG_ATA_SFF */
745 unsigned int pio_mask
;
746 unsigned int mwdma_mask
;
747 unsigned int udma_mask
;
748 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
750 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
751 unsigned long qc_allocated
;
752 unsigned int qc_active
;
753 int nr_active_links
; /* #links with active qcs */
755 struct ata_link link
; /* host default link */
756 struct ata_link
*slave_link
; /* see ata_slave_link_init() */
758 int nr_pmp_links
; /* nr of available PMP links */
759 struct ata_link
*pmp_link
; /* array of PMP links */
760 struct ata_link
*excl_link
; /* for PMP qc exclusion */
762 struct ata_port_stats stats
;
763 struct ata_host
*host
;
767 struct mutex scsi_scan_mutex
;
768 struct delayed_work hotplug_task
;
769 struct work_struct scsi_rescan_task
;
771 unsigned int hsm_task_state
;
774 struct list_head eh_done_q
;
775 wait_queue_head_t eh_wait_q
;
777 struct completion park_req_pending
;
779 pm_message_t pm_mesg
;
781 enum ata_lpm_policy target_lpm_policy
;
783 struct timer_list fastdrain_timer
;
784 unsigned long fastdrain_cnt
;
789 #ifdef CONFIG_ATA_ACPI
790 acpi_handle acpi_handle
;
791 struct ata_acpi_gtm __acpi_init_gtm
; /* use ata_acpi_init_gtm() */
794 u8 sector_buf
[ATA_SECT_SIZE
] ____cacheline_aligned
;
797 /* The following initializer overrides a method to NULL whether one of
798 * its parent has the method defined or not. This is equivalent to
799 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
800 * expression and thus can't be used as an initializer.
802 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
804 struct ata_port_operations
{
808 int (*qc_defer
)(struct ata_queued_cmd
*qc
);
809 int (*check_atapi_dma
)(struct ata_queued_cmd
*qc
);
810 void (*qc_prep
)(struct ata_queued_cmd
*qc
);
811 unsigned int (*qc_issue
)(struct ata_queued_cmd
*qc
);
812 bool (*qc_fill_rtf
)(struct ata_queued_cmd
*qc
);
815 * Configuration and exception handling
817 int (*cable_detect
)(struct ata_port
*ap
);
818 unsigned long (*mode_filter
)(struct ata_device
*dev
, unsigned long xfer_mask
);
819 void (*set_piomode
)(struct ata_port
*ap
, struct ata_device
*dev
);
820 void (*set_dmamode
)(struct ata_port
*ap
, struct ata_device
*dev
);
821 int (*set_mode
)(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
822 unsigned int (*read_id
)(struct ata_device
*dev
, struct ata_taskfile
*tf
, u16
*id
);
824 void (*dev_config
)(struct ata_device
*dev
);
826 void (*freeze
)(struct ata_port
*ap
);
827 void (*thaw
)(struct ata_port
*ap
);
828 ata_prereset_fn_t prereset
;
829 ata_reset_fn_t softreset
;
830 ata_reset_fn_t hardreset
;
831 ata_postreset_fn_t postreset
;
832 ata_prereset_fn_t pmp_prereset
;
833 ata_reset_fn_t pmp_softreset
;
834 ata_reset_fn_t pmp_hardreset
;
835 ata_postreset_fn_t pmp_postreset
;
836 void (*error_handler
)(struct ata_port
*ap
);
837 void (*lost_interrupt
)(struct ata_port
*ap
);
838 void (*post_internal_cmd
)(struct ata_queued_cmd
*qc
);
843 int (*scr_read
)(struct ata_link
*link
, unsigned int sc_reg
, u32
*val
);
844 int (*scr_write
)(struct ata_link
*link
, unsigned int sc_reg
, u32 val
);
845 void (*pmp_attach
)(struct ata_port
*ap
);
846 void (*pmp_detach
)(struct ata_port
*ap
);
847 int (*set_lpm
)(struct ata_link
*link
, enum ata_lpm_policy policy
,
851 * Start, stop, suspend and resume
853 int (*port_suspend
)(struct ata_port
*ap
, pm_message_t mesg
);
854 int (*port_resume
)(struct ata_port
*ap
);
855 int (*port_start
)(struct ata_port
*ap
);
856 void (*port_stop
)(struct ata_port
*ap
);
857 void (*host_stop
)(struct ata_host
*host
);
859 #ifdef CONFIG_ATA_SFF
861 * SFF / taskfile oriented ops
863 void (*sff_dev_select
)(struct ata_port
*ap
, unsigned int device
);
864 void (*sff_set_devctl
)(struct ata_port
*ap
, u8 ctl
);
865 u8 (*sff_check_status
)(struct ata_port
*ap
);
866 u8 (*sff_check_altstatus
)(struct ata_port
*ap
);
867 void (*sff_tf_load
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
868 void (*sff_tf_read
)(struct ata_port
*ap
, struct ata_taskfile
*tf
);
869 void (*sff_exec_command
)(struct ata_port
*ap
,
870 const struct ata_taskfile
*tf
);
871 unsigned int (*sff_data_xfer
)(struct ata_device
*dev
,
872 unsigned char *buf
, unsigned int buflen
, int rw
);
873 void (*sff_irq_on
)(struct ata_port
*);
874 bool (*sff_irq_check
)(struct ata_port
*);
875 void (*sff_irq_clear
)(struct ata_port
*);
876 void (*sff_drain_fifo
)(struct ata_queued_cmd
*qc
);
878 #ifdef CONFIG_ATA_BMDMA
879 void (*bmdma_setup
)(struct ata_queued_cmd
*qc
);
880 void (*bmdma_start
)(struct ata_queued_cmd
*qc
);
881 void (*bmdma_stop
)(struct ata_queued_cmd
*qc
);
882 u8 (*bmdma_status
)(struct ata_port
*ap
);
883 #endif /* CONFIG_ATA_BMDMA */
884 #endif /* CONFIG_ATA_SFF */
886 ssize_t (*em_show
)(struct ata_port
*ap
, char *buf
);
887 ssize_t (*em_store
)(struct ata_port
*ap
, const char *message
,
889 ssize_t (*sw_activity_show
)(struct ata_device
*dev
, char *buf
);
890 ssize_t (*sw_activity_store
)(struct ata_device
*dev
,
891 enum sw_activity val
);
895 void (*phy_reset
)(struct ata_port
*ap
);
896 void (*eng_timeout
)(struct ata_port
*ap
);
899 * ->inherits must be the last field and all the preceding
900 * fields must be pointers.
902 const struct ata_port_operations
*inherits
;
905 struct ata_port_info
{
907 unsigned long link_flags
;
908 unsigned long pio_mask
;
909 unsigned long mwdma_mask
;
910 unsigned long udma_mask
;
911 struct ata_port_operations
*port_ops
;
916 unsigned short mode
; /* ATA mode */
917 unsigned short setup
; /* t1 */
918 unsigned short act8b
; /* t2 for 8-bit I/O */
919 unsigned short rec8b
; /* t2i for 8-bit I/O */
920 unsigned short cyc8b
; /* t0 for 8-bit I/O */
921 unsigned short active
; /* t2 or tD */
922 unsigned short recover
; /* t2i or tK */
923 unsigned short dmack_hold
; /* tj */
924 unsigned short cycle
; /* t0 */
925 unsigned short udma
; /* t2CYCTYP/2 */
929 * Core layer - drivers/ata/libata-core.c
931 extern const unsigned long sata_deb_timing_normal
[];
932 extern const unsigned long sata_deb_timing_hotplug
[];
933 extern const unsigned long sata_deb_timing_long
[];
935 extern struct ata_port_operations ata_dummy_port_ops
;
936 extern const struct ata_port_info ata_dummy_port_info
;
938 static inline const unsigned long *
939 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
941 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
942 return sata_deb_timing_hotplug
;
944 return sata_deb_timing_normal
;
947 static inline int ata_port_is_dummy(struct ata_port
*ap
)
949 return ap
->ops
== &ata_dummy_port_ops
;
952 extern int sata_set_spd(struct ata_link
*link
);
953 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
954 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
955 int (*check_ready
)(struct ata_link
*link
));
956 extern int sata_link_debounce(struct ata_link
*link
,
957 const unsigned long *params
, unsigned long deadline
);
958 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
959 unsigned long deadline
);
960 extern int sata_link_scr_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
962 extern int sata_link_hardreset(struct ata_link
*link
,
963 const unsigned long *timing
, unsigned long deadline
,
964 bool *online
, int (*check_ready
)(struct ata_link
*));
965 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
966 unsigned long deadline
);
967 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
969 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
970 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
971 const struct ata_port_info
* const * ppi
, int n_ports
);
972 extern int ata_slave_link_init(struct ata_port
*ap
);
973 extern int ata_host_start(struct ata_host
*host
);
974 extern int ata_host_register(struct ata_host
*host
,
975 struct scsi_host_template
*sht
);
976 extern int ata_host_activate(struct ata_host
*host
, int irq
,
977 irq_handler_t irq_handler
, unsigned long irq_flags
,
978 struct scsi_host_template
*sht
);
979 extern void ata_host_detach(struct ata_host
*host
);
980 extern void ata_host_init(struct ata_host
*, struct device
*,
981 unsigned long, struct ata_port_operations
*);
982 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
983 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
984 extern int ata_scsi_queuecmd(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
985 extern int ata_sas_scsi_ioctl(struct ata_port
*ap
, struct scsi_device
*dev
,
986 int cmd
, void __user
*arg
);
987 extern void ata_sas_port_destroy(struct ata_port
*);
988 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
989 struct ata_port_info
*, struct Scsi_Host
*);
990 extern int ata_sas_port_init(struct ata_port
*);
991 extern int ata_sas_port_start(struct ata_port
*ap
);
992 extern void ata_sas_port_stop(struct ata_port
*ap
);
993 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
994 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, struct ata_port
*ap
);
995 extern int sata_scr_valid(struct ata_link
*link
);
996 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
997 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
998 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
999 extern bool ata_link_online(struct ata_link
*link
);
1000 extern bool ata_link_offline(struct ata_link
*link
);
1002 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
1003 extern void ata_host_resume(struct ata_host
*host
);
1005 extern int ata_ratelimit(void);
1006 extern void ata_msleep(struct ata_port
*ap
, unsigned int msecs
);
1007 extern u32
ata_wait_register(struct ata_port
*ap
, void __iomem
*reg
, u32 mask
,
1008 u32 val
, unsigned long interval
, unsigned long timeout
);
1009 extern int atapi_cmd_type(u8 opcode
);
1010 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
1011 u8 pmp
, int is_cmd
, u8
*fis
);
1012 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
1013 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
1014 unsigned long mwdma_mask
, unsigned long udma_mask
);
1015 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
1016 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
1017 unsigned long *udma_mask
);
1018 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
1019 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
1020 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
1021 extern const char *ata_mode_string(unsigned long xfer_mask
);
1022 extern unsigned long ata_id_xfermask(const u16
*id
);
1023 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
1024 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
1025 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
1026 unsigned int n_elem
);
1027 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
1028 extern void ata_dev_disable(struct ata_device
*adev
);
1029 extern void ata_id_string(const u16
*id
, unsigned char *s
,
1030 unsigned int ofs
, unsigned int len
);
1031 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
1032 unsigned int ofs
, unsigned int len
);
1033 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
1034 struct ata_taskfile
*tf
, u16
*id
);
1035 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
1036 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
);
1037 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
);
1038 extern int ata_std_bios_param(struct scsi_device
*sdev
,
1039 struct block_device
*bdev
,
1040 sector_t capacity
, int geom
[]);
1041 extern void ata_scsi_unlock_native_capacity(struct scsi_device
*sdev
);
1042 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
1043 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
1044 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
1045 int queue_depth
, int reason
);
1046 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
1047 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
1048 extern void ata_scsi_port_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
);
1049 extern void ata_scsi_cmd_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
, struct list_head
*eh_q
);
1051 extern int ata_cable_40wire(struct ata_port
*ap
);
1052 extern int ata_cable_80wire(struct ata_port
*ap
);
1053 extern int ata_cable_sata(struct ata_port
*ap
);
1054 extern int ata_cable_ignore(struct ata_port
*ap
);
1055 extern int ata_cable_unknown(struct ata_port
*ap
);
1057 /* Timing helpers */
1058 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
1059 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
1060 extern int ata_timing_compute(struct ata_device
*, unsigned short,
1061 struct ata_timing
*, int, int);
1062 extern void ata_timing_merge(const struct ata_timing
*,
1063 const struct ata_timing
*, struct ata_timing
*,
1065 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
1072 unsigned int reg
; /* PCI config register to read */
1073 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1078 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1079 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1082 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1083 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1084 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1085 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1086 #endif /* CONFIG_PM */
1087 #endif /* CONFIG_PCI */
1090 * ACPI - drivers/ata/libata-acpi.c
1092 #ifdef CONFIG_ATA_ACPI
1093 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1095 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1096 return &ap
->__acpi_init_gtm
;
1099 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1100 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1101 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1102 const struct ata_acpi_gtm
*gtm
);
1103 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1105 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1110 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1111 struct ata_acpi_gtm
*stm
)
1116 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1117 struct ata_acpi_gtm
*stm
)
1122 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1123 const struct ata_acpi_gtm
*gtm
)
1128 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1129 const struct ata_acpi_gtm
*gtm
)
1136 * EH - drivers/ata/libata-eh.c
1138 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1139 extern int ata_link_abort(struct ata_link
*link
);
1140 extern int ata_port_abort(struct ata_port
*ap
);
1141 extern int ata_port_freeze(struct ata_port
*ap
);
1142 extern int sata_async_notification(struct ata_port
*ap
);
1144 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1145 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1147 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1148 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1149 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1151 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1152 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1153 ata_postreset_fn_t postreset
);
1154 extern void ata_std_error_handler(struct ata_port
*ap
);
1157 * Base operations to inherit from and initializers for sht
1161 * base : Common to all libata drivers.
1162 * sata : SATA controllers w/ native interface.
1163 * pmp : SATA controllers w/ PMP support.
1164 * sff : SFF ATA controllers w/o BMDMA support.
1165 * bmdma : SFF ATA controllers w/ BMDMA support.
1169 * BASE : Common to all libata drivers. The user must set
1170 * sg_tablesize and dma_boundary.
1171 * PIO : SFF ATA controllers w/ only PIO support.
1172 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1173 * dma_boundary are set to BMDMA limits.
1174 * NCQ : SATA controllers supporting NCQ. The user must set
1175 * sg_tablesize, dma_boundary and can_queue.
1177 extern const struct ata_port_operations ata_base_port_ops
;
1178 extern const struct ata_port_operations sata_port_ops
;
1179 extern struct device_attribute
*ata_common_sdev_attrs
[];
1181 #define ATA_BASE_SHT(drv_name) \
1182 .module = THIS_MODULE, \
1184 .ioctl = ata_scsi_ioctl, \
1185 .queuecommand = ata_scsi_queuecmd, \
1186 .can_queue = ATA_DEF_QUEUE, \
1187 .this_id = ATA_SHT_THIS_ID, \
1188 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1189 .emulated = ATA_SHT_EMULATED, \
1190 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1191 .proc_name = drv_name, \
1192 .slave_configure = ata_scsi_slave_config, \
1193 .slave_destroy = ata_scsi_slave_destroy, \
1194 .bios_param = ata_std_bios_param, \
1195 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1196 .sdev_attrs = ata_common_sdev_attrs
1198 #define ATA_NCQ_SHT(drv_name) \
1199 ATA_BASE_SHT(drv_name), \
1200 .change_queue_depth = ata_scsi_change_queue_depth
1205 #ifdef CONFIG_SATA_PMP
1206 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1208 return ap
->flags
& ATA_FLAG_PMP
;
1211 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1213 return ap
->nr_pmp_links
!= 0;
1216 static inline int ata_is_host_link(const struct ata_link
*link
)
1218 return link
== &link
->ap
->link
|| link
== link
->ap
->slave_link
;
1220 #else /* CONFIG_SATA_PMP */
1221 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1226 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1231 static inline int ata_is_host_link(const struct ata_link
*link
)
1235 #endif /* CONFIG_SATA_PMP */
1237 static inline int sata_srst_pmp(struct ata_link
*link
)
1239 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1240 return SATA_PMP_CTRL_PORT
;
1247 #define ata_port_printk(ap, lv, fmt, args...) \
1248 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
1250 #define ata_link_printk(link, lv, fmt, args...) do { \
1251 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
1252 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
1253 (link)->pmp , ##args); \
1255 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
1258 #define ata_dev_printk(dev, lv, fmt, args...) \
1259 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
1260 (dev)->link->pmp + (dev)->devno , ##args)
1263 * ata_eh_info helpers
1265 extern void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1266 __attribute__ ((format (printf
, 2, 3)));
1267 extern void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1268 __attribute__ ((format (printf
, 2, 3)));
1269 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1271 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1273 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1274 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1275 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1276 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1280 * port description helpers
1282 extern void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...)
1283 __attribute__ ((format (printf
, 2, 3)));
1285 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1289 static inline unsigned int ata_tag_valid(unsigned int tag
)
1291 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1294 static inline unsigned int ata_tag_internal(unsigned int tag
)
1296 return tag
== ATA_TAG_INTERNAL
;
1302 static inline unsigned int ata_class_enabled(unsigned int class)
1304 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1305 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
;
1308 static inline unsigned int ata_class_disabled(unsigned int class)
1310 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1311 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
;
1314 static inline unsigned int ata_class_absent(unsigned int class)
1316 return !ata_class_enabled(class) && !ata_class_disabled(class);
1319 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1321 return ata_class_enabled(dev
->class);
1324 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1326 return ata_class_disabled(dev
->class);
1329 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1331 return ata_class_absent(dev
->class);
1337 static inline int ata_link_max_devices(const struct ata_link
*link
)
1339 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1344 static inline int ata_link_active(struct ata_link
*link
)
1346 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1352 * ATA_LITER_* constants are used to select link iteration mode and
1353 * ATA_DITER_* device iteration mode.
1355 * For a custom iteration directly using ata_{link|dev}_next(), if
1356 * @link or @dev, respectively, is NULL, the first element is
1357 * returned. @dev and @link can be any valid device or link and the
1358 * next element according to the iteration mode will be returned.
1359 * After the last element, NULL is returned.
1361 enum ata_link_iter_mode
{
1362 ATA_LITER_EDGE
, /* if present, PMP links only; otherwise,
1363 * host link. no slave link */
1364 ATA_LITER_HOST_FIRST
, /* host link followed by PMP or slave links */
1365 ATA_LITER_PMP_FIRST
, /* PMP links followed by host link,
1366 * slave link still comes after host link */
1369 enum ata_dev_iter_mode
{
1371 ATA_DITER_ENABLED_REVERSE
,
1373 ATA_DITER_ALL_REVERSE
,
1376 extern struct ata_link
*ata_link_next(struct ata_link
*link
,
1377 struct ata_port
*ap
,
1378 enum ata_link_iter_mode mode
);
1380 extern struct ata_device
*ata_dev_next(struct ata_device
*dev
,
1381 struct ata_link
*link
,
1382 enum ata_dev_iter_mode mode
);
1385 * Shortcut notation for iterations
1387 * ata_for_each_link() iterates over each link of @ap according to
1388 * @mode. @link points to the current link in the loop. @link is
1389 * NULL after loop termination. ata_for_each_dev() works the same way
1390 * except that it iterates over each device of @link.
1392 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1393 * specified when using the following shorthand notations. Only the
1394 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1395 * specified. This not only increases brevity but also makes it
1396 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1398 #define ata_for_each_link(link, ap, mode) \
1399 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1400 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1402 #define ata_for_each_dev(dev, link, mode) \
1403 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1404 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1407 * ata_ncq_enabled - Test whether NCQ is enabled
1408 * @dev: ATA device to test for
1411 * spin_lock_irqsave(host lock)
1414 * 1 if NCQ is enabled for @dev, 0 otherwise.
1416 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1418 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1419 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1422 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1424 qc
->tf
.ctl
|= ATA_NIEN
;
1427 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1430 if (likely(ata_tag_valid(tag
)))
1431 return &ap
->qcmd
[tag
];
1435 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1438 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1440 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1443 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1444 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1450 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1452 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1455 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1457 memset(tf
, 0, sizeof(*tf
));
1459 #ifdef CONFIG_ATA_SFF
1460 tf
->ctl
= dev
->link
->ap
->ctl
;
1462 tf
->ctl
= ATA_DEVCTL_OBS
;
1464 if (dev
->devno
== 0)
1465 tf
->device
= ATA_DEVICE_OBS
;
1467 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1470 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1472 qc
->dma_dir
= DMA_NONE
;
1477 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1480 qc
->sect_size
= ATA_SECT_SIZE
;
1482 ata_tf_init(qc
->dev
, &qc
->tf
);
1484 /* init result_tf such that it indicates normal completion */
1485 qc
->result_tf
.command
= ATA_DRDY
;
1486 qc
->result_tf
.feature
= 0;
1489 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1491 return ata_id_wcache_enabled(dev
->id
) ||
1492 ata_id_has_flush(dev
->id
) ||
1493 ata_id_has_flush_ext(dev
->id
);
1496 static inline unsigned int ac_err_mask(u8 status
)
1498 if (status
& (ATA_BUSY
| ATA_DRQ
))
1500 if (status
& (ATA_ERR
| ATA_DF
))
1505 static inline unsigned int __ac_err_mask(u8 status
)
1507 unsigned int mask
= ac_err_mask(status
);
1509 return AC_ERR_OTHER
;
1513 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1515 return *(struct ata_port
**)&host
->hostdata
[0];
1518 static inline int ata_check_ready(u8 status
)
1520 if (!(status
& ATA_BUSY
))
1523 /* 0xff indicates either no device or device not ready */
1530 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1531 unsigned long timeout_msecs
)
1533 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1536 /* Don't open code these in drivers as there are traps. Firstly the range may
1537 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1538 > UDMA_0. Dyma ddreigiau */
1540 static inline int ata_using_mwdma(struct ata_device
*adev
)
1542 if (adev
->dma_mode
>= XFER_MW_DMA_0
&& adev
->dma_mode
<= XFER_MW_DMA_4
)
1547 static inline int ata_using_udma(struct ata_device
*adev
)
1549 if (adev
->dma_mode
>= XFER_UDMA_0
&& adev
->dma_mode
<= XFER_UDMA_7
)
1554 static inline int ata_dma_enabled(struct ata_device
*adev
)
1556 return (adev
->dma_mode
== 0xFF ? 0 : 1);
1559 /**************************************************************************
1560 * PMP - drivers/ata/libata-pmp.c
1562 #ifdef CONFIG_SATA_PMP
1564 extern const struct ata_port_operations sata_pmp_port_ops
;
1566 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1567 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1569 #else /* CONFIG_SATA_PMP */
1571 #define sata_pmp_port_ops sata_port_ops
1572 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1573 #define sata_pmp_error_handler ata_std_error_handler
1575 #endif /* CONFIG_SATA_PMP */
1578 /**************************************************************************
1579 * SFF - drivers/ata/libata-sff.c
1581 #ifdef CONFIG_ATA_SFF
1583 extern const struct ata_port_operations ata_sff_port_ops
;
1584 extern const struct ata_port_operations ata_bmdma32_port_ops
;
1586 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1587 #define ATA_PIO_SHT(drv_name) \
1588 ATA_BASE_SHT(drv_name), \
1589 .sg_tablesize = LIBATA_MAX_PRD, \
1590 .dma_boundary = ATA_DMA_BOUNDARY
1592 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1593 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1594 extern void ata_sff_pause(struct ata_port
*ap
);
1595 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1596 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1597 unsigned long timeout_pat
, unsigned long timeout
);
1598 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1599 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1600 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1601 extern void ata_sff_exec_command(struct ata_port
*ap
,
1602 const struct ata_taskfile
*tf
);
1603 extern unsigned int ata_sff_data_xfer(struct ata_device
*dev
,
1604 unsigned char *buf
, unsigned int buflen
, int rw
);
1605 extern unsigned int ata_sff_data_xfer32(struct ata_device
*dev
,
1606 unsigned char *buf
, unsigned int buflen
, int rw
);
1607 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device
*dev
,
1608 unsigned char *buf
, unsigned int buflen
, int rw
);
1609 extern void ata_sff_irq_on(struct ata_port
*ap
);
1610 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1611 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1612 u8 status
, int in_wq
);
1613 extern void ata_sff_queue_work(struct work_struct
*work
);
1614 extern void ata_sff_queue_delayed_work(struct delayed_work
*dwork
,
1615 unsigned long delay
);
1616 extern void ata_sff_queue_pio_task(struct ata_link
*link
, unsigned long delay
);
1617 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1618 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1619 extern unsigned int ata_sff_port_intr(struct ata_port
*ap
,
1620 struct ata_queued_cmd
*qc
);
1621 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1622 extern void ata_sff_lost_interrupt(struct ata_port
*ap
);
1623 extern void ata_sff_freeze(struct ata_port
*ap
);
1624 extern void ata_sff_thaw(struct ata_port
*ap
);
1625 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1626 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1628 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1629 unsigned long deadline
);
1630 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1631 unsigned long deadline
);
1632 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1633 unsigned long deadline
);
1634 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1635 extern void ata_sff_drain_fifo(struct ata_queued_cmd
*qc
);
1636 extern void ata_sff_error_handler(struct ata_port
*ap
);
1637 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1639 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1640 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1641 const struct ata_port_info
* const * ppi
,
1642 struct ata_host
**r_host
);
1643 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1644 irq_handler_t irq_handler
,
1645 struct scsi_host_template
*sht
);
1646 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1647 const struct ata_port_info
* const * ppi
,
1648 struct scsi_host_template
*sht
, void *host_priv
, int hflags
);
1649 #endif /* CONFIG_PCI */
1651 #ifdef CONFIG_ATA_BMDMA
1653 extern const struct ata_port_operations ata_bmdma_port_ops
;
1655 #define ATA_BMDMA_SHT(drv_name) \
1656 ATA_BASE_SHT(drv_name), \
1657 .sg_tablesize = LIBATA_MAX_PRD, \
1658 .dma_boundary = ATA_DMA_BOUNDARY
1660 extern void ata_bmdma_qc_prep(struct ata_queued_cmd
*qc
);
1661 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd
*qc
);
1662 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1663 extern unsigned int ata_bmdma_port_intr(struct ata_port
*ap
,
1664 struct ata_queued_cmd
*qc
);
1665 extern irqreturn_t
ata_bmdma_interrupt(int irq
, void *dev_instance
);
1666 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
1667 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
1668 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
1669 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1670 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1671 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1672 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1673 extern int ata_bmdma_port_start(struct ata_port
*ap
);
1674 extern int ata_bmdma_port_start32(struct ata_port
*ap
);
1677 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1678 extern void ata_pci_bmdma_init(struct ata_host
*host
);
1679 extern int ata_pci_bmdma_prepare_host(struct pci_dev
*pdev
,
1680 const struct ata_port_info
* const * ppi
,
1681 struct ata_host
**r_host
);
1682 extern int ata_pci_bmdma_init_one(struct pci_dev
*pdev
,
1683 const struct ata_port_info
* const * ppi
,
1684 struct scsi_host_template
*sht
,
1685 void *host_priv
, int hflags
);
1686 #endif /* CONFIG_PCI */
1687 #endif /* CONFIG_ATA_BMDMA */
1690 * ata_sff_busy_wait - Wait for a port status register
1691 * @ap: Port to wait for.
1692 * @bits: bits that must be clear
1693 * @max: number of 10uS waits to perform
1695 * Waits up to max*10 microseconds for the selected bits in the port's
1696 * status register to be cleared.
1697 * Returns final value of status register.
1700 * Inherited from caller.
1702 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1709 status
= ap
->ops
->sff_check_status(ap
);
1711 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1717 * ata_wait_idle - Wait for a port to be idle.
1718 * @ap: Port to wait for.
1720 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1721 * Returns final value of status register.
1724 * Inherited from caller.
1726 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1728 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1731 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1732 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1738 #endif /* CONFIG_ATA_SFF */
1740 #endif /* __LINUX_LIBATA_H__ */