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_CMD_PER_LUN
= 1,
138 ATA_SHT_THIS_ID
= -1,
139 ATA_SHT_USE_CLUSTERING
= 1,
141 /* struct ata_device stuff */
142 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
143 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
144 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
145 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
146 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
147 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
148 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
149 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
150 ATA_DFLAG_DMADIR
= (1 << 10), /* device requires DMADIR */
151 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
153 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
154 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
155 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
156 ATA_DFLAG_DUBIOUS_XFER
= (1 << 16), /* data transfer not verified */
157 ATA_DFLAG_NO_UNLOAD
= (1 << 17), /* device doesn't support unload */
158 ATA_DFLAG_UNLOCK_HPA
= (1 << 18), /* unlock HPA */
159 ATA_DFLAG_INIT_MASK
= (1 << 24) - 1,
161 ATA_DFLAG_DETACH
= (1 << 24),
162 ATA_DFLAG_DETACHED
= (1 << 25),
164 ATA_DFLAG_DA
= (1 << 26), /* device supports Device Attention */
166 ATA_DEV_UNKNOWN
= 0, /* unknown device */
167 ATA_DEV_ATA
= 1, /* ATA device */
168 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
169 ATA_DEV_ATAPI
= 3, /* ATAPI device */
170 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
171 ATA_DEV_PMP
= 5, /* SATA port multiplier */
172 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
173 ATA_DEV_SEMB
= 7, /* SEMB */
174 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
175 ATA_DEV_NONE
= 9, /* no device */
177 /* struct ata_link flags */
178 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
179 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
180 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
181 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
182 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
183 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
184 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
185 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
186 ATA_LFLAG_NO_LPM
= (1 << 8), /* disable LPM on this link */
188 /* struct ata_port flags */
189 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
190 /* (doesn't imply presence) */
191 ATA_FLAG_SATA
= (1 << 1),
192 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
193 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
194 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
195 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
196 * doesn't handle PIO interrupts */
197 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
198 ATA_FLAG_NO_POWEROFF_SPINDOWN
= (1 << 11), /* don't spindown before poweroff */
199 ATA_FLAG_NO_HIBERNATE_SPINDOWN
= (1 << 12), /* don't spindown before hibernation */
200 ATA_FLAG_DEBUGMSG
= (1 << 13),
201 ATA_FLAG_FPDMA_AA
= (1 << 14), /* driver supports Auto-Activate */
202 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
203 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
204 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
205 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
206 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
207 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
209 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
211 ATA_FLAG_NO_DIPM
= (1 << 23), /* host not happy with DIPM */
213 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
216 /* struct ata_port pflags */
217 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
218 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
219 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
220 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
221 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
222 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
223 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
224 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
225 ATA_PFLAG_UNLOADING
= (1 << 9), /* driver is being unloaded */
226 ATA_PFLAG_UNLOADED
= (1 << 10), /* driver is unloaded */
228 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
229 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
230 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
232 ATA_PFLAG_PIO32
= (1 << 20), /* 32bit PIO */
233 ATA_PFLAG_PIO32CHANGE
= (1 << 21), /* 32bit PIO can be turned on/off */
235 /* struct ata_queued_cmd flags */
236 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
237 ATA_QCFLAG_DMAMAP
= (1 << 1), /* SG table is DMA mapped */
238 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
239 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
240 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
241 ATA_QCFLAG_QUIET
= (1 << 6), /* don't report device error */
242 ATA_QCFLAG_RETRY
= (1 << 7), /* retry after failure */
244 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
245 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
246 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
249 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
250 ATA_HOST_STARTED
= (1 << 1), /* Host started */
251 ATA_HOST_PARALLEL_SCAN
= (1 << 2), /* Ports on this host can be scanned in parallel */
252 ATA_HOST_IGNORE_ATA
= (1 << 3), /* Ignore ATA devices on this host. */
254 /* bits 24:31 of host->flags are reserved for LLD specific flags */
256 /* various lengths of time */
257 ATA_TMOUT_BOOT
= 30000, /* heuristic */
258 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
259 ATA_TMOUT_INTERNAL_QUICK
= 5000,
260 ATA_TMOUT_MAX_PARK
= 30000,
263 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
264 * is too much without parallel probing. Use 2s if parallel
265 * probing is available, 800ms otherwise.
267 ATA_TMOUT_FF_WAIT_LONG
= 2000,
268 ATA_TMOUT_FF_WAIT
= 800,
270 /* Spec mandates to wait for ">= 2ms" before checking status
271 * after reset. We wait 150ms, because that was the magic
272 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
273 * the period of time between when the ATA command register is
274 * written, and then status is checked. Because waiting for
275 * "a while" before checking status is fine, post SRST, we
276 * perform this magic delay here as well.
278 * Old drivers/ide uses the 2mS rule and then waits for ready.
280 ATA_WAIT_AFTER_RESET
= 150,
282 /* If PMP is supported, we have to do follow-up SRST. As some
283 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
284 * advised to wait only for the following duration before
287 ATA_TMOUT_PMP_SRST_WAIT
= 5000,
301 /* SATA port states */
306 /* encoding various smaller bitmaps into a single
307 * unsigned long bitmap
309 ATA_NR_PIO_MODES
= 7,
310 ATA_NR_MWDMA_MODES
= 5,
311 ATA_NR_UDMA_MODES
= 8,
314 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
315 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
317 /* size of buffer to pad xfers ending on unaligned boundaries */
323 /* return values for ->qc_defer */
327 /* desc_len for ata_eh_info and context */
328 ATA_EH_DESC_LEN
= 80,
330 /* reset / recovery action types */
331 ATA_EH_REVALIDATE
= (1 << 0),
332 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
333 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
334 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
335 ATA_EH_ENABLE_LINK
= (1 << 3),
336 ATA_EH_PARK
= (1 << 5), /* unload heads and stop I/O */
338 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
| ATA_EH_PARK
,
339 ATA_EH_ALL_ACTIONS
= ATA_EH_REVALIDATE
| ATA_EH_RESET
|
342 /* ata_eh_info->flags */
343 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
344 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
345 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
346 ATA_EHI_NO_RECOVERY
= (1 << 4), /* no recovery */
348 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
349 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
350 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
351 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
352 ATA_EHI_POST_SETMODE
= (1 << 20), /* revalidating after setmode */
354 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
356 /* mask of flags to transfer *to* the slave link */
357 ATA_EHI_TO_SLAVE_MASK
= ATA_EHI_NO_AUTOPSY
| ATA_EHI_QUIET
,
359 /* max tries if error condition is still set after ->error_handler */
360 ATA_EH_MAX_TRIES
= 5,
362 /* sometimes resuming a link requires several retries */
363 ATA_LINK_RESUME_TRIES
= 5,
365 /* how hard are we gonna try to probe/recover devices */
366 ATA_PROBE_MAX_TRIES
= 3,
367 ATA_EH_DEV_TRIES
= 3,
368 ATA_EH_PMP_TRIES
= 5,
369 ATA_EH_PMP_LINK_TRIES
= 3,
371 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
373 /* This should match the actual table size of
374 * ata_eh_cmd_timeout_table in libata-eh.c.
376 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 6,
378 /* Horkage types. May be set by libata or controller on drives
379 (some horkage may be drive/controller pair dependent */
381 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
382 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
383 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
384 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
385 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
386 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
387 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
388 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
389 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
390 ATA_HORKAGE_BRIDGE_OK
= (1 << 10), /* no bridge limits */
391 ATA_HORKAGE_ATAPI_MOD16_DMA
= (1 << 11), /* use ATAPI DMA for commands
392 not multiple of 16 bytes */
393 ATA_HORKAGE_FIRMWARE_WARN
= (1 << 12), /* firmware update warning */
394 ATA_HORKAGE_1_5_GBPS
= (1 << 13), /* force 1.5 Gbps */
395 ATA_HORKAGE_NOSETXFER
= (1 << 14), /* skip SETXFER, SATA only */
396 ATA_HORKAGE_BROKEN_FPDMA_AA
= (1 << 15), /* skip AA */
397 ATA_HORKAGE_DUMP_ID
= (1 << 16), /* dump IDENTIFY data */
399 /* DMA mask for user DMA control: User visible values; DO NOT
401 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
402 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
403 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
405 /* ATAPI command types */
406 ATAPI_READ
= 0, /* READs */
407 ATAPI_WRITE
= 1, /* WRITEs */
408 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
409 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
410 ATAPI_MISC
= 4, /* the rest */
412 /* Timing constants */
413 ATA_TIMING_SETUP
= (1 << 0),
414 ATA_TIMING_ACT8B
= (1 << 1),
415 ATA_TIMING_REC8B
= (1 << 2),
416 ATA_TIMING_CYC8B
= (1 << 3),
417 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
419 ATA_TIMING_ACTIVE
= (1 << 4),
420 ATA_TIMING_RECOVER
= (1 << 5),
421 ATA_TIMING_DMACK_HOLD
= (1 << 6),
422 ATA_TIMING_CYCLE
= (1 << 7),
423 ATA_TIMING_UDMA
= (1 << 8),
424 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
425 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
426 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
427 ATA_TIMING_DMACK_HOLD
| ATA_TIMING_CYCLE
|
431 ATA_ACPI_FILTER_SETXFER
= 1 << 0,
432 ATA_ACPI_FILTER_LOCK
= 1 << 1,
433 ATA_ACPI_FILTER_DIPM
= 1 << 2,
434 ATA_ACPI_FILTER_FPDMA_OFFSET
= 1 << 3, /* FPDMA non-zero offset */
435 ATA_ACPI_FILTER_FPDMA_AA
= 1 << 4, /* FPDMA auto activate */
437 ATA_ACPI_FILTER_DEFAULT
= ATA_ACPI_FILTER_SETXFER
|
438 ATA_ACPI_FILTER_LOCK
|
439 ATA_ACPI_FILTER_DIPM
,
443 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
445 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
447 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
451 enum hsm_task_states
{
452 HSM_ST_IDLE
, /* no command on going */
453 HSM_ST_FIRST
, /* (waiting the device to)
454 write CDB or first data block */
455 HSM_ST
, /* (waiting the device to) transfer data */
456 HSM_ST_LAST
, /* (waiting the device to) complete command */
457 HSM_ST_ERR
, /* error */
460 enum ata_completion_errors
{
461 AC_ERR_DEV
= (1 << 0), /* device reported error */
462 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
463 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
464 AC_ERR_MEDIA
= (1 << 3), /* media error */
465 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
466 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
467 AC_ERR_SYSTEM
= (1 << 6), /* system error */
468 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
469 AC_ERR_OTHER
= (1 << 8), /* unknown */
470 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
471 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
475 * Link power management policy: If you alter this, you also need to
476 * alter libata-scsi.c (for the ascii descriptions)
478 enum ata_lpm_policy
{
486 ATA_LPM_EMPTY
= (1 << 0), /* port empty/probing */
487 ATA_LPM_HIPM
= (1 << 1), /* may use HIPM */
490 /* forward declarations */
492 struct ata_port_operations
;
495 struct ata_queued_cmd
;
498 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
499 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
500 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
501 unsigned long deadline
);
502 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
504 extern struct device_attribute dev_attr_link_power_management_policy
;
505 extern struct device_attribute dev_attr_unload_heads
;
506 extern struct device_attribute dev_attr_em_message_type
;
507 extern struct device_attribute dev_attr_em_message
;
508 extern struct device_attribute dev_attr_sw_activity
;
516 #ifdef CONFIG_ATA_SFF
518 void __iomem
*cmd_addr
;
519 void __iomem
*data_addr
;
520 void __iomem
*error_addr
;
521 void __iomem
*feature_addr
;
522 void __iomem
*nsect_addr
;
523 void __iomem
*lbal_addr
;
524 void __iomem
*lbam_addr
;
525 void __iomem
*lbah_addr
;
526 void __iomem
*device_addr
;
527 void __iomem
*status_addr
;
528 void __iomem
*command_addr
;
529 void __iomem
*altstatus_addr
;
530 void __iomem
*ctl_addr
;
531 #ifdef CONFIG_ATA_BMDMA
532 void __iomem
*bmdma_addr
;
533 #endif /* CONFIG_ATA_BMDMA */
534 void __iomem
*scr_addr
;
536 #endif /* CONFIG_ATA_SFF */
541 void __iomem
* const *iomap
;
542 unsigned int n_ports
;
544 struct ata_port_operations
*ops
;
547 struct mutex eh_mutex
;
548 struct task_struct
*eh_owner
;
550 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
551 struct ata_port
*ports
[0];
554 struct ata_queued_cmd
{
556 struct ata_device
*dev
;
558 struct scsi_cmnd
*scsicmd
;
559 void (*scsidone
)(struct scsi_cmnd
*);
561 struct ata_taskfile tf
;
562 u8 cdb
[ATAPI_CDB_LEN
];
564 unsigned long flags
; /* ATA_QCFLAG_xxx */
567 unsigned int orig_n_elem
;
571 unsigned int sect_size
;
574 unsigned int extrabytes
;
575 unsigned int curbytes
;
577 struct scatterlist sgent
;
579 struct scatterlist
*sg
;
581 struct scatterlist
*cursg
;
582 unsigned int cursg_ofs
;
584 unsigned int err_mask
;
585 struct ata_taskfile result_tf
;
586 ata_qc_cb_t complete_fn
;
592 struct ata_port_stats
{
593 unsigned long unhandled_irq
;
594 unsigned long idle_irq
;
595 unsigned long rw_reqbuf
;
598 struct ata_ering_entry
{
600 unsigned int err_mask
;
606 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
610 struct ata_link
*link
;
611 unsigned int devno
; /* 0 or 1 */
612 unsigned int horkage
; /* List of broken features */
613 unsigned long flags
; /* ATA_DFLAG_xxx */
614 struct scsi_device
*sdev
; /* attached SCSI device */
616 #ifdef CONFIG_ATA_ACPI
617 union acpi_object
*gtf_cache
;
618 unsigned int gtf_filter
;
621 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
622 u64 n_sectors
; /* size of device, if ATA */
623 u64 n_native_sectors
; /* native size, if ATA */
624 unsigned int class; /* ATA_DEV_xxx */
625 unsigned long unpark_deadline
;
630 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
632 unsigned int multi_count
; /* sectors count for
633 READ/WRITE MULTIPLE */
634 unsigned int max_sectors
; /* per-device max sectors */
635 unsigned int cdb_len
;
637 /* per-dev xfer mask */
638 unsigned long pio_mask
;
639 unsigned long mwdma_mask
;
640 unsigned long udma_mask
;
642 /* for CHS addressing */
643 u16 cylinders
; /* Number of cylinders */
644 u16 heads
; /* Number of heads */
645 u16 sectors
; /* Number of sectors per track */
648 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
649 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
654 /* ering is CLEAR_END, read comment above CLEAR_END */
655 struct ata_ering ering
;
658 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
659 * cleared to zero on ata_dev_init().
661 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
662 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
665 struct ata_device
*dev
; /* offending device */
666 u32 serror
; /* SError from LLDD */
667 unsigned int err_mask
; /* port-wide err_mask */
668 unsigned int action
; /* ATA_EH_* action mask */
669 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
670 unsigned int flags
; /* ATA_EHI_* flags */
672 unsigned int probe_mask
;
674 char desc
[ATA_EH_DESC_LEN
];
678 struct ata_eh_context
{
679 struct ata_eh_info i
;
680 int tries
[ATA_MAX_DEVICES
];
681 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
682 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
683 unsigned int classes
[ATA_MAX_DEVICES
];
684 unsigned int did_probe_mask
;
685 unsigned int unloaded_mask
;
686 unsigned int saved_ncq_enabled
;
687 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
688 /* timestamp for the last reset attempt or success */
689 unsigned long last_reset
;
692 struct ata_acpi_drive
698 struct ata_acpi_gtm
{
699 struct ata_acpi_drive drive
[2];
705 int pmp
; /* port multiplier port # */
708 unsigned int active_tag
; /* active tag on this link */
709 u32 sactive
; /* active NCQ commands */
711 unsigned int flags
; /* ATA_LFLAG_xxx */
713 u32 saved_scontrol
; /* SControl on probe */
714 unsigned int hw_sata_spd_limit
;
715 unsigned int sata_spd_limit
;
716 unsigned int sata_spd
; /* current SATA PHY speed */
717 enum ata_lpm_policy lpm_policy
;
719 /* record runtime error info, protected by host_set lock */
720 struct ata_eh_info eh_info
;
722 struct ata_eh_context eh_context
;
724 struct ata_device device
[ATA_MAX_DEVICES
];
726 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
727 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
730 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
731 struct ata_port_operations
*ops
;
733 /* Flags owned by the EH context. Only EH should touch these once the
735 unsigned long flags
; /* ATA_FLAG_xxx */
736 /* Flags that change dynamically, protected by ap->lock */
737 unsigned int pflags
; /* ATA_PFLAG_xxx */
738 unsigned int print_id
; /* user visible unique port ID */
739 unsigned int port_no
; /* 0 based port no. inside the host */
741 #ifdef CONFIG_ATA_SFF
742 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
743 u8 ctl
; /* cache of ATA control register */
744 u8 last_ctl
; /* Cache last written value */
745 struct ata_link
* sff_pio_task_link
; /* link currently used */
746 struct delayed_work sff_pio_task
;
747 #ifdef CONFIG_ATA_BMDMA
748 struct ata_bmdma_prd
*bmdma_prd
; /* BMDMA SG list */
749 dma_addr_t bmdma_prd_dma
; /* and its DMA mapping */
750 #endif /* CONFIG_ATA_BMDMA */
751 #endif /* CONFIG_ATA_SFF */
753 unsigned int pio_mask
;
754 unsigned int mwdma_mask
;
755 unsigned int udma_mask
;
756 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
758 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
759 unsigned long qc_allocated
;
760 unsigned int qc_active
;
761 int nr_active_links
; /* #links with active qcs */
763 struct ata_link link
; /* host default link */
764 struct ata_link
*slave_link
; /* see ata_slave_link_init() */
766 int nr_pmp_links
; /* nr of available PMP links */
767 struct ata_link
*pmp_link
; /* array of PMP links */
768 struct ata_link
*excl_link
; /* for PMP qc exclusion */
770 struct ata_port_stats stats
;
771 struct ata_host
*host
;
775 struct mutex scsi_scan_mutex
;
776 struct delayed_work hotplug_task
;
777 struct work_struct scsi_rescan_task
;
779 unsigned int hsm_task_state
;
782 struct list_head eh_done_q
;
783 wait_queue_head_t eh_wait_q
;
785 struct completion park_req_pending
;
787 pm_message_t pm_mesg
;
789 enum ata_lpm_policy target_lpm_policy
;
791 struct timer_list fastdrain_timer
;
792 unsigned long fastdrain_cnt
;
797 #ifdef CONFIG_ATA_ACPI
798 struct ata_acpi_gtm __acpi_init_gtm
; /* use ata_acpi_init_gtm() */
801 u8 sector_buf
[ATA_SECT_SIZE
] ____cacheline_aligned
;
804 /* The following initializer overrides a method to NULL whether one of
805 * its parent has the method defined or not. This is equivalent to
806 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
807 * expression and thus can't be used as an initializer.
809 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
811 struct ata_port_operations
{
815 int (*qc_defer
)(struct ata_queued_cmd
*qc
);
816 int (*check_atapi_dma
)(struct ata_queued_cmd
*qc
);
817 void (*qc_prep
)(struct ata_queued_cmd
*qc
);
818 unsigned int (*qc_issue
)(struct ata_queued_cmd
*qc
);
819 bool (*qc_fill_rtf
)(struct ata_queued_cmd
*qc
);
822 * Configuration and exception handling
824 int (*cable_detect
)(struct ata_port
*ap
);
825 unsigned long (*mode_filter
)(struct ata_device
*dev
, unsigned long xfer_mask
);
826 void (*set_piomode
)(struct ata_port
*ap
, struct ata_device
*dev
);
827 void (*set_dmamode
)(struct ata_port
*ap
, struct ata_device
*dev
);
828 int (*set_mode
)(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
829 unsigned int (*read_id
)(struct ata_device
*dev
, struct ata_taskfile
*tf
, u16
*id
);
831 void (*dev_config
)(struct ata_device
*dev
);
833 void (*freeze
)(struct ata_port
*ap
);
834 void (*thaw
)(struct ata_port
*ap
);
835 ata_prereset_fn_t prereset
;
836 ata_reset_fn_t softreset
;
837 ata_reset_fn_t hardreset
;
838 ata_postreset_fn_t postreset
;
839 ata_prereset_fn_t pmp_prereset
;
840 ata_reset_fn_t pmp_softreset
;
841 ata_reset_fn_t pmp_hardreset
;
842 ata_postreset_fn_t pmp_postreset
;
843 void (*error_handler
)(struct ata_port
*ap
);
844 void (*lost_interrupt
)(struct ata_port
*ap
);
845 void (*post_internal_cmd
)(struct ata_queued_cmd
*qc
);
846 void (*sched_eh
)(struct ata_port
*ap
);
847 void (*end_eh
)(struct ata_port
*ap
);
852 int (*scr_read
)(struct ata_link
*link
, unsigned int sc_reg
, u32
*val
);
853 int (*scr_write
)(struct ata_link
*link
, unsigned int sc_reg
, u32 val
);
854 void (*pmp_attach
)(struct ata_port
*ap
);
855 void (*pmp_detach
)(struct ata_port
*ap
);
856 int (*set_lpm
)(struct ata_link
*link
, enum ata_lpm_policy policy
,
860 * Start, stop, suspend and resume
862 int (*port_suspend
)(struct ata_port
*ap
, pm_message_t mesg
);
863 int (*port_resume
)(struct ata_port
*ap
);
864 int (*port_start
)(struct ata_port
*ap
);
865 void (*port_stop
)(struct ata_port
*ap
);
866 void (*host_stop
)(struct ata_host
*host
);
868 #ifdef CONFIG_ATA_SFF
870 * SFF / taskfile oriented ops
872 void (*sff_dev_select
)(struct ata_port
*ap
, unsigned int device
);
873 void (*sff_set_devctl
)(struct ata_port
*ap
, u8 ctl
);
874 u8 (*sff_check_status
)(struct ata_port
*ap
);
875 u8 (*sff_check_altstatus
)(struct ata_port
*ap
);
876 void (*sff_tf_load
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
877 void (*sff_tf_read
)(struct ata_port
*ap
, struct ata_taskfile
*tf
);
878 void (*sff_exec_command
)(struct ata_port
*ap
,
879 const struct ata_taskfile
*tf
);
880 unsigned int (*sff_data_xfer
)(struct ata_device
*dev
,
881 unsigned char *buf
, unsigned int buflen
, int rw
);
882 void (*sff_irq_on
)(struct ata_port
*);
883 bool (*sff_irq_check
)(struct ata_port
*);
884 void (*sff_irq_clear
)(struct ata_port
*);
885 void (*sff_drain_fifo
)(struct ata_queued_cmd
*qc
);
887 #ifdef CONFIG_ATA_BMDMA
888 void (*bmdma_setup
)(struct ata_queued_cmd
*qc
);
889 void (*bmdma_start
)(struct ata_queued_cmd
*qc
);
890 void (*bmdma_stop
)(struct ata_queued_cmd
*qc
);
891 u8 (*bmdma_status
)(struct ata_port
*ap
);
892 #endif /* CONFIG_ATA_BMDMA */
893 #endif /* CONFIG_ATA_SFF */
895 ssize_t (*em_show
)(struct ata_port
*ap
, char *buf
);
896 ssize_t (*em_store
)(struct ata_port
*ap
, const char *message
,
898 ssize_t (*sw_activity_show
)(struct ata_device
*dev
, char *buf
);
899 ssize_t (*sw_activity_store
)(struct ata_device
*dev
,
900 enum sw_activity val
);
904 void (*phy_reset
)(struct ata_port
*ap
);
905 void (*eng_timeout
)(struct ata_port
*ap
);
908 * ->inherits must be the last field and all the preceding
909 * fields must be pointers.
911 const struct ata_port_operations
*inherits
;
914 struct ata_port_info
{
916 unsigned long link_flags
;
917 unsigned long pio_mask
;
918 unsigned long mwdma_mask
;
919 unsigned long udma_mask
;
920 struct ata_port_operations
*port_ops
;
925 unsigned short mode
; /* ATA mode */
926 unsigned short setup
; /* t1 */
927 unsigned short act8b
; /* t2 for 8-bit I/O */
928 unsigned short rec8b
; /* t2i for 8-bit I/O */
929 unsigned short cyc8b
; /* t0 for 8-bit I/O */
930 unsigned short active
; /* t2 or tD */
931 unsigned short recover
; /* t2i or tK */
932 unsigned short dmack_hold
; /* tj */
933 unsigned short cycle
; /* t0 */
934 unsigned short udma
; /* t2CYCTYP/2 */
938 * Core layer - drivers/ata/libata-core.c
940 extern const unsigned long sata_deb_timing_normal
[];
941 extern const unsigned long sata_deb_timing_hotplug
[];
942 extern const unsigned long sata_deb_timing_long
[];
944 extern struct ata_port_operations ata_dummy_port_ops
;
945 extern const struct ata_port_info ata_dummy_port_info
;
947 static inline const unsigned long *
948 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
950 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
951 return sata_deb_timing_hotplug
;
953 return sata_deb_timing_normal
;
956 static inline int ata_port_is_dummy(struct ata_port
*ap
)
958 return ap
->ops
== &ata_dummy_port_ops
;
961 extern int sata_set_spd(struct ata_link
*link
);
962 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
963 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
964 int (*check_ready
)(struct ata_link
*link
));
965 extern int sata_link_debounce(struct ata_link
*link
,
966 const unsigned long *params
, unsigned long deadline
);
967 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
968 unsigned long deadline
);
969 extern int sata_link_scr_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
971 extern int sata_link_hardreset(struct ata_link
*link
,
972 const unsigned long *timing
, unsigned long deadline
,
973 bool *online
, int (*check_ready
)(struct ata_link
*));
974 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
975 unsigned long deadline
);
976 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
978 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
979 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
980 const struct ata_port_info
* const * ppi
, int n_ports
);
981 extern int ata_slave_link_init(struct ata_port
*ap
);
982 extern int ata_host_start(struct ata_host
*host
);
983 extern int ata_host_register(struct ata_host
*host
,
984 struct scsi_host_template
*sht
);
985 extern int ata_host_activate(struct ata_host
*host
, int irq
,
986 irq_handler_t irq_handler
, unsigned long irq_flags
,
987 struct scsi_host_template
*sht
);
988 extern void ata_host_detach(struct ata_host
*host
);
989 extern void ata_host_init(struct ata_host
*, struct device
*,
990 unsigned long, struct ata_port_operations
*);
991 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
992 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
993 extern int ata_scsi_queuecmd(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
994 extern int ata_sas_scsi_ioctl(struct ata_port
*ap
, struct scsi_device
*dev
,
995 int cmd
, void __user
*arg
);
996 extern void ata_sas_port_destroy(struct ata_port
*);
997 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
998 struct ata_port_info
*, struct Scsi_Host
*);
999 extern void ata_sas_async_probe(struct ata_port
*ap
);
1000 extern int ata_sas_sync_probe(struct ata_port
*ap
);
1001 extern int ata_sas_port_init(struct ata_port
*);
1002 extern int ata_sas_port_start(struct ata_port
*ap
);
1003 extern void ata_sas_port_stop(struct ata_port
*ap
);
1004 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
1005 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, struct ata_port
*ap
);
1006 extern int sata_scr_valid(struct ata_link
*link
);
1007 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
1008 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
1009 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
1010 extern bool ata_link_online(struct ata_link
*link
);
1011 extern bool ata_link_offline(struct ata_link
*link
);
1013 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
1014 extern void ata_host_resume(struct ata_host
*host
);
1016 extern int ata_ratelimit(void);
1017 extern void ata_msleep(struct ata_port
*ap
, unsigned int msecs
);
1018 extern u32
ata_wait_register(struct ata_port
*ap
, void __iomem
*reg
, u32 mask
,
1019 u32 val
, unsigned long interval
, unsigned long timeout
);
1020 extern int atapi_cmd_type(u8 opcode
);
1021 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
1022 u8 pmp
, int is_cmd
, u8
*fis
);
1023 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
1024 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
1025 unsigned long mwdma_mask
, unsigned long udma_mask
);
1026 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
1027 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
1028 unsigned long *udma_mask
);
1029 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
1030 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
1031 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
1032 extern const char *ata_mode_string(unsigned long xfer_mask
);
1033 extern unsigned long ata_id_xfermask(const u16
*id
);
1034 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
1035 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
1036 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
1037 unsigned int n_elem
);
1038 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
1039 extern void ata_dev_disable(struct ata_device
*adev
);
1040 extern void ata_id_string(const u16
*id
, unsigned char *s
,
1041 unsigned int ofs
, unsigned int len
);
1042 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
1043 unsigned int ofs
, unsigned int len
);
1044 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
1045 struct ata_taskfile
*tf
, u16
*id
);
1046 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
1047 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
);
1048 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
);
1049 extern int ata_std_bios_param(struct scsi_device
*sdev
,
1050 struct block_device
*bdev
,
1051 sector_t capacity
, int geom
[]);
1052 extern void ata_scsi_unlock_native_capacity(struct scsi_device
*sdev
);
1053 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
1054 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
1055 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
1056 int queue_depth
, int reason
);
1057 extern int __ata_change_queue_depth(struct ata_port
*ap
, struct scsi_device
*sdev
,
1058 int queue_depth
, int reason
);
1059 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
1060 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
1061 extern void ata_scsi_port_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
);
1062 extern void ata_scsi_cmd_error_handler(struct Scsi_Host
*host
, struct ata_port
*ap
, struct list_head
*eh_q
);
1064 extern int ata_cable_40wire(struct ata_port
*ap
);
1065 extern int ata_cable_80wire(struct ata_port
*ap
);
1066 extern int ata_cable_sata(struct ata_port
*ap
);
1067 extern int ata_cable_ignore(struct ata_port
*ap
);
1068 extern int ata_cable_unknown(struct ata_port
*ap
);
1070 /* Timing helpers */
1071 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
1072 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
1073 extern int ata_timing_compute(struct ata_device
*, unsigned short,
1074 struct ata_timing
*, int, int);
1075 extern void ata_timing_merge(const struct ata_timing
*,
1076 const struct ata_timing
*, struct ata_timing
*,
1078 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
1085 unsigned int reg
; /* PCI config register to read */
1086 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1091 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1092 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1095 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1096 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1097 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1098 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1099 #endif /* CONFIG_PM */
1100 #endif /* CONFIG_PCI */
1103 * ACPI - drivers/ata/libata-acpi.c
1105 #ifdef CONFIG_ATA_ACPI
1106 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1108 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1109 return &ap
->__acpi_init_gtm
;
1112 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1113 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1114 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1115 const struct ata_acpi_gtm
*gtm
);
1116 acpi_handle
ata_ap_acpi_handle(struct ata_port
*ap
);
1117 acpi_handle
ata_dev_acpi_handle(struct ata_device
*dev
);
1118 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1120 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1125 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1126 struct ata_acpi_gtm
*stm
)
1131 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1132 struct ata_acpi_gtm
*stm
)
1137 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1138 const struct ata_acpi_gtm
*gtm
)
1143 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1144 const struct ata_acpi_gtm
*gtm
)
1151 * EH - drivers/ata/libata-eh.c
1153 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1154 extern void ata_port_wait_eh(struct ata_port
*ap
);
1155 extern int ata_link_abort(struct ata_link
*link
);
1156 extern int ata_port_abort(struct ata_port
*ap
);
1157 extern int ata_port_freeze(struct ata_port
*ap
);
1158 extern int sata_async_notification(struct ata_port
*ap
);
1160 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1161 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1163 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1164 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1165 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1167 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1168 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1169 ata_postreset_fn_t postreset
);
1170 extern void ata_std_error_handler(struct ata_port
*ap
);
1171 extern void ata_std_sched_eh(struct ata_port
*ap
);
1172 extern void ata_std_end_eh(struct ata_port
*ap
);
1173 extern int ata_link_nr_enabled(struct ata_link
*link
);
1176 * Base operations to inherit from and initializers for sht
1180 * base : Common to all libata drivers.
1181 * sata : SATA controllers w/ native interface.
1182 * pmp : SATA controllers w/ PMP support.
1183 * sff : SFF ATA controllers w/o BMDMA support.
1184 * bmdma : SFF ATA controllers w/ BMDMA support.
1188 * BASE : Common to all libata drivers. The user must set
1189 * sg_tablesize and dma_boundary.
1190 * PIO : SFF ATA controllers w/ only PIO support.
1191 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1192 * dma_boundary are set to BMDMA limits.
1193 * NCQ : SATA controllers supporting NCQ. The user must set
1194 * sg_tablesize, dma_boundary and can_queue.
1196 extern const struct ata_port_operations ata_base_port_ops
;
1197 extern const struct ata_port_operations sata_port_ops
;
1198 extern struct device_attribute
*ata_common_sdev_attrs
[];
1200 #define ATA_BASE_SHT(drv_name) \
1201 .module = THIS_MODULE, \
1203 .ioctl = ata_scsi_ioctl, \
1204 .queuecommand = ata_scsi_queuecmd, \
1205 .can_queue = ATA_DEF_QUEUE, \
1206 .this_id = ATA_SHT_THIS_ID, \
1207 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1208 .emulated = ATA_SHT_EMULATED, \
1209 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1210 .proc_name = drv_name, \
1211 .slave_configure = ata_scsi_slave_config, \
1212 .slave_destroy = ata_scsi_slave_destroy, \
1213 .bios_param = ata_std_bios_param, \
1214 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1215 .sdev_attrs = ata_common_sdev_attrs
1217 #define ATA_NCQ_SHT(drv_name) \
1218 ATA_BASE_SHT(drv_name), \
1219 .change_queue_depth = ata_scsi_change_queue_depth
1224 #ifdef CONFIG_SATA_PMP
1225 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1227 return ap
->flags
& ATA_FLAG_PMP
;
1230 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1232 return ap
->nr_pmp_links
!= 0;
1235 static inline int ata_is_host_link(const struct ata_link
*link
)
1237 return link
== &link
->ap
->link
|| link
== link
->ap
->slave_link
;
1239 #else /* CONFIG_SATA_PMP */
1240 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1245 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1250 static inline int ata_is_host_link(const struct ata_link
*link
)
1254 #endif /* CONFIG_SATA_PMP */
1256 static inline int sata_srst_pmp(struct ata_link
*link
)
1258 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1259 return SATA_PMP_CTRL_PORT
;
1267 int ata_port_printk(const struct ata_port
*ap
, const char *level
,
1268 const char *fmt
, ...);
1270 int ata_link_printk(const struct ata_link
*link
, const char *level
,
1271 const char *fmt
, ...);
1273 int ata_dev_printk(const struct ata_device
*dev
, const char *level
,
1274 const char *fmt
, ...);
1276 #define ata_port_err(ap, fmt, ...) \
1277 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1278 #define ata_port_warn(ap, fmt, ...) \
1279 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1280 #define ata_port_notice(ap, fmt, ...) \
1281 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1282 #define ata_port_info(ap, fmt, ...) \
1283 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1284 #define ata_port_dbg(ap, fmt, ...) \
1285 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1287 #define ata_link_err(link, fmt, ...) \
1288 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1289 #define ata_link_warn(link, fmt, ...) \
1290 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1291 #define ata_link_notice(link, fmt, ...) \
1292 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1293 #define ata_link_info(link, fmt, ...) \
1294 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1295 #define ata_link_dbg(link, fmt, ...) \
1296 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1298 #define ata_dev_err(dev, fmt, ...) \
1299 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1300 #define ata_dev_warn(dev, fmt, ...) \
1301 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1302 #define ata_dev_notice(dev, fmt, ...) \
1303 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1304 #define ata_dev_info(dev, fmt, ...) \
1305 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1306 #define ata_dev_dbg(dev, fmt, ...) \
1307 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1309 void ata_print_version(const struct device
*dev
, const char *version
);
1312 * ata_eh_info helpers
1314 extern __printf(2, 3)
1315 void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1316 extern __printf(2, 3)
1317 void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...);
1318 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1320 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1322 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1323 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1324 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1325 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1329 * port description helpers
1331 extern __printf(2, 3)
1332 void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...);
1334 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1338 static inline unsigned int ata_tag_valid(unsigned int tag
)
1340 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1343 static inline unsigned int ata_tag_internal(unsigned int tag
)
1345 return tag
== ATA_TAG_INTERNAL
;
1351 static inline unsigned int ata_class_enabled(unsigned int class)
1353 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1354 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
;
1357 static inline unsigned int ata_class_disabled(unsigned int class)
1359 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1360 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
;
1363 static inline unsigned int ata_class_absent(unsigned int class)
1365 return !ata_class_enabled(class) && !ata_class_disabled(class);
1368 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1370 return ata_class_enabled(dev
->class);
1373 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1375 return ata_class_disabled(dev
->class);
1378 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1380 return ata_class_absent(dev
->class);
1386 static inline int ata_link_max_devices(const struct ata_link
*link
)
1388 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1393 static inline int ata_link_active(struct ata_link
*link
)
1395 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1401 * ATA_LITER_* constants are used to select link iteration mode and
1402 * ATA_DITER_* device iteration mode.
1404 * For a custom iteration directly using ata_{link|dev}_next(), if
1405 * @link or @dev, respectively, is NULL, the first element is
1406 * returned. @dev and @link can be any valid device or link and the
1407 * next element according to the iteration mode will be returned.
1408 * After the last element, NULL is returned.
1410 enum ata_link_iter_mode
{
1411 ATA_LITER_EDGE
, /* if present, PMP links only; otherwise,
1412 * host link. no slave link */
1413 ATA_LITER_HOST_FIRST
, /* host link followed by PMP or slave links */
1414 ATA_LITER_PMP_FIRST
, /* PMP links followed by host link,
1415 * slave link still comes after host link */
1418 enum ata_dev_iter_mode
{
1420 ATA_DITER_ENABLED_REVERSE
,
1422 ATA_DITER_ALL_REVERSE
,
1425 extern struct ata_link
*ata_link_next(struct ata_link
*link
,
1426 struct ata_port
*ap
,
1427 enum ata_link_iter_mode mode
);
1429 extern struct ata_device
*ata_dev_next(struct ata_device
*dev
,
1430 struct ata_link
*link
,
1431 enum ata_dev_iter_mode mode
);
1434 * Shortcut notation for iterations
1436 * ata_for_each_link() iterates over each link of @ap according to
1437 * @mode. @link points to the current link in the loop. @link is
1438 * NULL after loop termination. ata_for_each_dev() works the same way
1439 * except that it iterates over each device of @link.
1441 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1442 * specified when using the following shorthand notations. Only the
1443 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1444 * specified. This not only increases brevity but also makes it
1445 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1447 #define ata_for_each_link(link, ap, mode) \
1448 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1449 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1451 #define ata_for_each_dev(dev, link, mode) \
1452 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1453 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1456 * ata_ncq_enabled - Test whether NCQ is enabled
1457 * @dev: ATA device to test for
1460 * spin_lock_irqsave(host lock)
1463 * 1 if NCQ is enabled for @dev, 0 otherwise.
1465 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1467 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1468 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1471 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1473 qc
->tf
.ctl
|= ATA_NIEN
;
1476 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1479 if (likely(ata_tag_valid(tag
)))
1480 return &ap
->qcmd
[tag
];
1484 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1487 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1489 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1492 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1493 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1499 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1501 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1504 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1506 memset(tf
, 0, sizeof(*tf
));
1508 #ifdef CONFIG_ATA_SFF
1509 tf
->ctl
= dev
->link
->ap
->ctl
;
1511 tf
->ctl
= ATA_DEVCTL_OBS
;
1513 if (dev
->devno
== 0)
1514 tf
->device
= ATA_DEVICE_OBS
;
1516 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1519 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1521 qc
->dma_dir
= DMA_NONE
;
1526 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1529 qc
->sect_size
= ATA_SECT_SIZE
;
1531 ata_tf_init(qc
->dev
, &qc
->tf
);
1533 /* init result_tf such that it indicates normal completion */
1534 qc
->result_tf
.command
= ATA_DRDY
;
1535 qc
->result_tf
.feature
= 0;
1538 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1540 return ata_id_wcache_enabled(dev
->id
) ||
1541 ata_id_has_flush(dev
->id
) ||
1542 ata_id_has_flush_ext(dev
->id
);
1545 static inline unsigned int ac_err_mask(u8 status
)
1547 if (status
& (ATA_BUSY
| ATA_DRQ
))
1549 if (status
& (ATA_ERR
| ATA_DF
))
1554 static inline unsigned int __ac_err_mask(u8 status
)
1556 unsigned int mask
= ac_err_mask(status
);
1558 return AC_ERR_OTHER
;
1562 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1564 return *(struct ata_port
**)&host
->hostdata
[0];
1567 static inline int ata_check_ready(u8 status
)
1569 if (!(status
& ATA_BUSY
))
1572 /* 0xff indicates either no device or device not ready */
1579 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1580 unsigned long timeout_msecs
)
1582 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1585 /* Don't open code these in drivers as there are traps. Firstly the range may
1586 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1587 > UDMA_0. Dyma ddreigiau */
1589 static inline int ata_using_mwdma(struct ata_device
*adev
)
1591 if (adev
->dma_mode
>= XFER_MW_DMA_0
&& adev
->dma_mode
<= XFER_MW_DMA_4
)
1596 static inline int ata_using_udma(struct ata_device
*adev
)
1598 if (adev
->dma_mode
>= XFER_UDMA_0
&& adev
->dma_mode
<= XFER_UDMA_7
)
1603 static inline int ata_dma_enabled(struct ata_device
*adev
)
1605 return (adev
->dma_mode
== 0xFF ? 0 : 1);
1608 /**************************************************************************
1609 * PMP - drivers/ata/libata-pmp.c
1611 #ifdef CONFIG_SATA_PMP
1613 extern const struct ata_port_operations sata_pmp_port_ops
;
1615 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1616 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1618 #else /* CONFIG_SATA_PMP */
1620 #define sata_pmp_port_ops sata_port_ops
1621 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1622 #define sata_pmp_error_handler ata_std_error_handler
1624 #endif /* CONFIG_SATA_PMP */
1627 /**************************************************************************
1628 * SFF - drivers/ata/libata-sff.c
1630 #ifdef CONFIG_ATA_SFF
1632 extern const struct ata_port_operations ata_sff_port_ops
;
1633 extern const struct ata_port_operations ata_bmdma32_port_ops
;
1635 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1636 #define ATA_PIO_SHT(drv_name) \
1637 ATA_BASE_SHT(drv_name), \
1638 .sg_tablesize = LIBATA_MAX_PRD, \
1639 .dma_boundary = ATA_DMA_BOUNDARY
1641 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1642 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1643 extern void ata_sff_pause(struct ata_port
*ap
);
1644 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1645 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1646 unsigned long timeout_pat
, unsigned long timeout
);
1647 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1648 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1649 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1650 extern void ata_sff_exec_command(struct ata_port
*ap
,
1651 const struct ata_taskfile
*tf
);
1652 extern unsigned int ata_sff_data_xfer(struct ata_device
*dev
,
1653 unsigned char *buf
, unsigned int buflen
, int rw
);
1654 extern unsigned int ata_sff_data_xfer32(struct ata_device
*dev
,
1655 unsigned char *buf
, unsigned int buflen
, int rw
);
1656 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device
*dev
,
1657 unsigned char *buf
, unsigned int buflen
, int rw
);
1658 extern void ata_sff_irq_on(struct ata_port
*ap
);
1659 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1660 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1661 u8 status
, int in_wq
);
1662 extern void ata_sff_queue_work(struct work_struct
*work
);
1663 extern void ata_sff_queue_delayed_work(struct delayed_work
*dwork
,
1664 unsigned long delay
);
1665 extern void ata_sff_queue_pio_task(struct ata_link
*link
, unsigned long delay
);
1666 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1667 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1668 extern unsigned int ata_sff_port_intr(struct ata_port
*ap
,
1669 struct ata_queued_cmd
*qc
);
1670 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1671 extern void ata_sff_lost_interrupt(struct ata_port
*ap
);
1672 extern void ata_sff_freeze(struct ata_port
*ap
);
1673 extern void ata_sff_thaw(struct ata_port
*ap
);
1674 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1675 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1677 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1678 unsigned long deadline
);
1679 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1680 unsigned long deadline
);
1681 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1682 unsigned long deadline
);
1683 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1684 extern void ata_sff_drain_fifo(struct ata_queued_cmd
*qc
);
1685 extern void ata_sff_error_handler(struct ata_port
*ap
);
1686 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1688 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1689 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1690 const struct ata_port_info
* const * ppi
,
1691 struct ata_host
**r_host
);
1692 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1693 irq_handler_t irq_handler
,
1694 struct scsi_host_template
*sht
);
1695 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1696 const struct ata_port_info
* const * ppi
,
1697 struct scsi_host_template
*sht
, void *host_priv
, int hflags
);
1698 #endif /* CONFIG_PCI */
1700 #ifdef CONFIG_ATA_BMDMA
1702 extern const struct ata_port_operations ata_bmdma_port_ops
;
1704 #define ATA_BMDMA_SHT(drv_name) \
1705 ATA_BASE_SHT(drv_name), \
1706 .sg_tablesize = LIBATA_MAX_PRD, \
1707 .dma_boundary = ATA_DMA_BOUNDARY
1709 extern void ata_bmdma_qc_prep(struct ata_queued_cmd
*qc
);
1710 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd
*qc
);
1711 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1712 extern unsigned int ata_bmdma_port_intr(struct ata_port
*ap
,
1713 struct ata_queued_cmd
*qc
);
1714 extern irqreturn_t
ata_bmdma_interrupt(int irq
, void *dev_instance
);
1715 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
1716 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
1717 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
1718 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1719 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1720 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1721 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1722 extern int ata_bmdma_port_start(struct ata_port
*ap
);
1723 extern int ata_bmdma_port_start32(struct ata_port
*ap
);
1726 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1727 extern void ata_pci_bmdma_init(struct ata_host
*host
);
1728 extern int ata_pci_bmdma_prepare_host(struct pci_dev
*pdev
,
1729 const struct ata_port_info
* const * ppi
,
1730 struct ata_host
**r_host
);
1731 extern int ata_pci_bmdma_init_one(struct pci_dev
*pdev
,
1732 const struct ata_port_info
* const * ppi
,
1733 struct scsi_host_template
*sht
,
1734 void *host_priv
, int hflags
);
1735 #endif /* CONFIG_PCI */
1736 #endif /* CONFIG_ATA_BMDMA */
1739 * ata_sff_busy_wait - Wait for a port status register
1740 * @ap: Port to wait for.
1741 * @bits: bits that must be clear
1742 * @max: number of 10uS waits to perform
1744 * Waits up to max*10 microseconds for the selected bits in the port's
1745 * status register to be cleared.
1746 * Returns final value of status register.
1749 * Inherited from caller.
1751 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1758 status
= ap
->ops
->sff_check_status(ap
);
1760 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1766 * ata_wait_idle - Wait for a port to be idle.
1767 * @ap: Port to wait for.
1769 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1770 * Returns final value of status register.
1773 * Inherited from caller.
1775 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1777 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1780 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1781 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1787 #endif /* CONFIG_ATA_SFF */
1789 #endif /* __LINUX_LIBATA_H__ */