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>
42 * Define if arch has non-standard setup. This is a _PCI_ standard
43 * not a legacy or ISA standard.
45 #ifdef CONFIG_ATA_NONSTANDARD
46 #include <asm/libata-portmap.h>
48 #include <asm-generic/libata-portmap.h>
52 * compile-time options: to be removed as soon as all the drivers are
53 * converted to the new debugging mechanism
55 #undef ATA_DEBUG /* debugging output */
56 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
57 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
58 #undef ATA_NDEBUG /* define to disable quick runtime checks */
61 /* note: prints function name for you */
63 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
64 #ifdef ATA_VERBOSE_DEBUG
65 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
67 #define VPRINTK(fmt, args...)
68 #endif /* ATA_VERBOSE_DEBUG */
70 #define DPRINTK(fmt, args...)
71 #define VPRINTK(fmt, args...)
72 #endif /* ATA_DEBUG */
74 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
76 /* NEW: debug levels */
77 #define HAVE_LIBATA_MSG 1
81 ATA_MSG_INFO
= 0x0002,
82 ATA_MSG_PROBE
= 0x0004,
83 ATA_MSG_WARN
= 0x0008,
84 ATA_MSG_MALLOC
= 0x0010,
86 ATA_MSG_INTR
= 0x0040,
90 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
91 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
92 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
93 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
94 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
95 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
96 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
97 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
99 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
101 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
102 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
105 return (1 << dval
) - 1;
108 /* defines only for the constants which don't work well as enums */
109 #define ATA_TAG_POISON 0xfafbfcfdU
112 /* various global constants */
113 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
114 LIBATA_DUMB_MAX_PRD
= ATA_MAX_PRD
/ 4, /* Worst case */
116 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
118 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
- 1,
119 ATA_SHORT_PAUSE
= 16,
121 ATAPI_MAX_DRAIN
= 16 << 10,
123 ATA_ALL_DEVICES
= (1 << ATA_MAX_DEVICES
) - 1,
125 ATA_SHT_EMULATED
= 1,
126 ATA_SHT_CMD_PER_LUN
= 1,
127 ATA_SHT_THIS_ID
= -1,
128 ATA_SHT_USE_CLUSTERING
= 1,
130 /* struct ata_device stuff */
131 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
132 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
133 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
134 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
135 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
136 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
137 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
138 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
139 ATA_DFLAG_HIPM
= (1 << 8), /* device supports HIPM */
140 ATA_DFLAG_DIPM
= (1 << 9), /* device supports DIPM */
141 ATA_DFLAG_DMADIR
= (1 << 10), /* device requires DMADIR */
142 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
144 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
145 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
146 ATA_DFLAG_SPUNDOWN
= (1 << 14), /* XXX: for spindown_compat */
147 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
148 ATA_DFLAG_DUBIOUS_XFER
= (1 << 16), /* data transfer not verified */
149 ATA_DFLAG_INIT_MASK
= (1 << 24) - 1,
151 ATA_DFLAG_DETACH
= (1 << 24),
152 ATA_DFLAG_DETACHED
= (1 << 25),
154 ATA_DEV_UNKNOWN
= 0, /* unknown device */
155 ATA_DEV_ATA
= 1, /* ATA device */
156 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
157 ATA_DEV_ATAPI
= 3, /* ATAPI device */
158 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
159 ATA_DEV_PMP
= 5, /* SATA port multiplier */
160 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
161 ATA_DEV_SEMB
= 7, /* SEMB */
162 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
163 ATA_DEV_NONE
= 9, /* no device */
165 /* struct ata_link flags */
166 ATA_LFLAG_NO_HRST
= (1 << 1), /* avoid hardreset */
167 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
168 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
169 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
170 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
171 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
172 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
173 ATA_LFLAG_SW_ACTIVITY
= (1 << 7), /* keep activity stats */
175 /* struct ata_port flags */
176 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
177 /* (doesn't imply presence) */
178 ATA_FLAG_SATA
= (1 << 1),
179 ATA_FLAG_NO_LEGACY
= (1 << 2), /* no legacy mode check */
180 ATA_FLAG_MMIO
= (1 << 3), /* use MMIO, not PIO */
181 ATA_FLAG_SRST
= (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
182 ATA_FLAG_SATA_RESET
= (1 << 5), /* (obsolete) use COMRESET */
183 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
184 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
185 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
186 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
187 * doesn't handle PIO interrupts */
188 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
189 ATA_FLAG_DEBUGMSG
= (1 << 13),
190 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
191 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
192 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
193 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
194 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
195 ATA_FLAG_IPM
= (1 << 20), /* driver can handle IPM */
196 ATA_FLAG_EM
= (1 << 21), /* driver supports enclosure
198 ATA_FLAG_SW_ACTIVITY
= (1 << 22), /* driver supports sw activity
201 /* The following flag belongs to ap->pflags but is kept in
202 * ap->flags because it's referenced in many LLDs and will be
203 * removed in not-too-distant future.
205 ATA_FLAG_DISABLED
= (1 << 23), /* port is disabled, ignore it */
207 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
209 /* struct ata_port pflags */
210 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
211 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
212 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
213 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
214 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
215 ATA_PFLAG_UNLOADING
= (1 << 5), /* module is unloading */
216 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
217 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
218 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
220 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
221 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
222 ATA_PFLAG_INIT_GTM_VALID
= (1 << 19), /* initial gtm data valid */
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 */
241 /* bits 24:31 of host->flags are reserved for LLD specific flags */
243 /* various lengths of time */
244 ATA_TMOUT_BOOT
= 30000, /* heuristic */
245 ATA_TMOUT_BOOT_QUICK
= 7000, /* heuristic */
246 ATA_TMOUT_INTERNAL_QUICK
= 5000,
248 /* FIXME: GoVault needs 2s but we can't afford that without
249 * parallel probing. 800ms is enough for iVDR disk
250 * HHD424020F7SV00. Increase to 2secs when parallel probing
253 ATA_TMOUT_FF_WAIT
= 800,
255 /* Spec mandates to wait for ">= 2ms" before checking status
256 * after reset. We wait 150ms, because that was the magic
257 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
258 * the period of time between when the ATA command register is
259 * written, and then status is checked. Because waiting for
260 * "a while" before checking status is fine, post SRST, we
261 * perform this magic delay here as well.
263 * Old drivers/ide uses the 2mS rule and then waits for ready.
265 ATA_WAIT_AFTER_RESET
= 150,
267 /* If PMP is supported, we have to do follow-up SRST. As some
268 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
269 * advised to wait only for the following duration before
272 ATA_TMOUT_PMP_SRST_WAIT
= 1000,
286 /* SATA port states */
291 /* encoding various smaller bitmaps into a single
292 * unsigned long bitmap
294 ATA_NR_PIO_MODES
= 7,
295 ATA_NR_MWDMA_MODES
= 5,
296 ATA_NR_UDMA_MODES
= 8,
299 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_NR_PIO_MODES
,
300 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_NR_MWDMA_MODES
,
302 /* size of buffer to pad xfers ending on unaligned boundaries */
308 /* return values for ->qc_defer */
312 /* desc_len for ata_eh_info and context */
313 ATA_EH_DESC_LEN
= 80,
315 /* reset / recovery action types */
316 ATA_EH_REVALIDATE
= (1 << 0),
317 ATA_EH_SOFTRESET
= (1 << 1), /* meaningful only in ->prereset */
318 ATA_EH_HARDRESET
= (1 << 2), /* meaningful only in ->prereset */
319 ATA_EH_RESET
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
320 ATA_EH_ENABLE_LINK
= (1 << 3),
321 ATA_EH_LPM
= (1 << 4), /* link power management action */
323 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
,
325 /* ata_eh_info->flags */
326 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
327 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
328 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
330 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
331 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
332 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
333 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
334 ATA_EHI_POST_SETMODE
= (1 << 20), /* revaildating after setmode */
336 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
338 /* max tries if error condition is still set after ->error_handler */
339 ATA_EH_MAX_TRIES
= 5,
341 /* how hard are we gonna try to probe/recover devices */
342 ATA_PROBE_MAX_TRIES
= 3,
343 ATA_EH_DEV_TRIES
= 3,
344 ATA_EH_PMP_TRIES
= 5,
345 ATA_EH_PMP_LINK_TRIES
= 3,
347 SATA_PMP_RW_TIMEOUT
= 3000, /* PMP read/write timeout */
349 /* This should match the actual table size of
350 * ata_eh_cmd_timeout_table in libata-eh.c.
352 ATA_EH_CMD_TIMEOUT_TABLE_SIZE
= 5,
354 /* Horkage types. May be set by libata or controller on drives
355 (some horkage may be drive/controller pair dependant */
357 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
358 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
359 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
360 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
361 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
362 ATA_HORKAGE_DISABLE
= (1 << 5), /* Disable it */
363 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
364 ATA_HORKAGE_IPM
= (1 << 7), /* Link PM problems */
365 ATA_HORKAGE_IVB
= (1 << 8), /* cbl det validity bit bugs */
366 ATA_HORKAGE_STUCK_ERR
= (1 << 9), /* stuck ERR on next PACKET */
368 /* DMA mask for user DMA control: User visible values; DO NOT
370 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
371 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
372 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
374 /* ATAPI command types */
375 ATAPI_READ
= 0, /* READs */
376 ATAPI_WRITE
= 1, /* WRITEs */
377 ATAPI_READ_CD
= 2, /* READ CD [MSF] */
378 ATAPI_PASS_THRU
= 3, /* SAT pass-thru */
379 ATAPI_MISC
= 4, /* the rest */
381 /* Timing constants */
382 ATA_TIMING_SETUP
= (1 << 0),
383 ATA_TIMING_ACT8B
= (1 << 1),
384 ATA_TIMING_REC8B
= (1 << 2),
385 ATA_TIMING_CYC8B
= (1 << 3),
386 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
388 ATA_TIMING_ACTIVE
= (1 << 4),
389 ATA_TIMING_RECOVER
= (1 << 5),
390 ATA_TIMING_CYCLE
= (1 << 6),
391 ATA_TIMING_UDMA
= (1 << 7),
392 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
393 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
394 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
395 ATA_TIMING_CYCLE
| ATA_TIMING_UDMA
,
399 ATA_MASK_PIO
= ((1LU << ATA_NR_PIO_MODES
) - 1)
401 ATA_MASK_MWDMA
= ((1LU << ATA_NR_MWDMA_MODES
) - 1)
403 ATA_MASK_UDMA
= ((1LU << ATA_NR_UDMA_MODES
) - 1)
407 enum hsm_task_states
{
408 HSM_ST_IDLE
, /* no command on going */
409 HSM_ST_FIRST
, /* (waiting the device to)
410 write CDB or first data block */
411 HSM_ST
, /* (waiting the device to) transfer data */
412 HSM_ST_LAST
, /* (waiting the device to) complete command */
413 HSM_ST_ERR
, /* error */
416 enum ata_completion_errors
{
417 AC_ERR_DEV
= (1 << 0), /* device reported error */
418 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
419 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
420 AC_ERR_MEDIA
= (1 << 3), /* media error */
421 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
422 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
423 AC_ERR_SYSTEM
= (1 << 6), /* system error */
424 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
425 AC_ERR_OTHER
= (1 << 8), /* unknown */
426 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
427 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
430 /* forward declarations */
432 struct ata_port_operations
;
435 struct ata_queued_cmd
;
438 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
439 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
440 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
441 unsigned long deadline
);
442 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
445 * host pm policy: If you alter this, you also need to alter libata-scsi.c
446 * (for the ascii descriptions)
454 extern struct device_attribute dev_attr_link_power_management_policy
;
455 extern struct device_attribute dev_attr_em_message_type
;
456 extern struct device_attribute dev_attr_em_message
;
457 extern struct device_attribute dev_attr_sw_activity
;
465 #ifdef CONFIG_ATA_SFF
467 void __iomem
*cmd_addr
;
468 void __iomem
*data_addr
;
469 void __iomem
*error_addr
;
470 void __iomem
*feature_addr
;
471 void __iomem
*nsect_addr
;
472 void __iomem
*lbal_addr
;
473 void __iomem
*lbam_addr
;
474 void __iomem
*lbah_addr
;
475 void __iomem
*device_addr
;
476 void __iomem
*status_addr
;
477 void __iomem
*command_addr
;
478 void __iomem
*altstatus_addr
;
479 void __iomem
*ctl_addr
;
480 void __iomem
*bmdma_addr
;
481 void __iomem
*scr_addr
;
483 #endif /* CONFIG_ATA_SFF */
488 void __iomem
* const *iomap
;
489 unsigned int n_ports
;
491 struct ata_port_operations
*ops
;
493 #ifdef CONFIG_ATA_ACPI
494 acpi_handle acpi_handle
;
496 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
497 struct ata_port
*ports
[0];
500 struct ata_queued_cmd
{
502 struct ata_device
*dev
;
504 struct scsi_cmnd
*scsicmd
;
505 void (*scsidone
)(struct scsi_cmnd
*);
507 struct ata_taskfile tf
;
508 u8 cdb
[ATAPI_CDB_LEN
];
510 unsigned long flags
; /* ATA_QCFLAG_xxx */
516 unsigned int sect_size
;
519 unsigned int extrabytes
;
520 unsigned int curbytes
;
522 struct scatterlist
*cursg
;
523 unsigned int cursg_ofs
;
525 struct scatterlist sgent
;
527 struct scatterlist
*sg
;
529 unsigned int err_mask
;
530 struct ata_taskfile result_tf
;
531 ata_qc_cb_t complete_fn
;
537 struct ata_port_stats
{
538 unsigned long unhandled_irq
;
539 unsigned long idle_irq
;
540 unsigned long rw_reqbuf
;
543 struct ata_ering_entry
{
545 unsigned int err_mask
;
551 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
555 struct ata_link
*link
;
556 unsigned int devno
; /* 0 or 1 */
557 unsigned long flags
; /* ATA_DFLAG_xxx */
558 unsigned int horkage
; /* List of broken features */
559 struct scsi_device
*sdev
; /* attached SCSI device */
560 #ifdef CONFIG_ATA_ACPI
561 acpi_handle acpi_handle
;
562 union acpi_object
*gtf_cache
;
564 /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
565 u64 n_sectors
; /* size of device, if ATA */
566 unsigned int class; /* ATA_DEV_xxx */
571 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
573 unsigned int multi_count
; /* sectors count for
574 READ/WRITE MULTIPLE */
575 unsigned int max_sectors
; /* per-device max sectors */
576 unsigned int cdb_len
;
578 /* per-dev xfer mask */
579 unsigned long pio_mask
;
580 unsigned long mwdma_mask
;
581 unsigned long udma_mask
;
583 /* for CHS addressing */
584 u16 cylinders
; /* Number of cylinders */
585 u16 heads
; /* Number of heads */
586 u16 sectors
; /* Number of sectors per track */
590 struct ata_ering ering
;
593 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
594 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
598 /* Offset into struct ata_device. Fields above it are maintained
599 * acress device init. Fields below are zeroed.
601 #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
604 struct ata_device
*dev
; /* offending device */
605 u32 serror
; /* SError from LLDD */
606 unsigned int err_mask
; /* port-wide err_mask */
607 unsigned int action
; /* ATA_EH_* action mask */
608 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
609 unsigned int flags
; /* ATA_EHI_* flags */
611 unsigned int probe_mask
;
613 char desc
[ATA_EH_DESC_LEN
];
617 struct ata_eh_context
{
618 struct ata_eh_info i
;
619 int tries
[ATA_MAX_DEVICES
];
620 int cmd_timeout_idx
[ATA_MAX_DEVICES
]
621 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE
];
622 unsigned int classes
[ATA_MAX_DEVICES
];
623 unsigned int did_probe_mask
;
624 unsigned int saved_ncq_enabled
;
625 u8 saved_xfer_mode
[ATA_MAX_DEVICES
];
626 /* timestamp for the last reset attempt or success */
627 unsigned long last_reset
;
630 struct ata_acpi_drive
636 struct ata_acpi_gtm
{
637 struct ata_acpi_drive drive
[2];
643 int pmp
; /* port multiplier port # */
645 unsigned int active_tag
; /* active tag on this link */
646 u32 sactive
; /* active NCQ commands */
648 unsigned int flags
; /* ATA_LFLAG_xxx */
650 u32 saved_scontrol
; /* SControl on probe */
651 unsigned int hw_sata_spd_limit
;
652 unsigned int sata_spd_limit
;
653 unsigned int sata_spd
; /* current SATA PHY speed */
655 /* record runtime error info, protected by host_set lock */
656 struct ata_eh_info eh_info
;
658 struct ata_eh_context eh_context
;
660 struct ata_device device
[ATA_MAX_DEVICES
];
664 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
665 struct ata_port_operations
*ops
;
667 unsigned long flags
; /* ATA_FLAG_xxx */
668 unsigned int pflags
; /* ATA_PFLAG_xxx */
669 unsigned int print_id
; /* user visible unique port ID */
670 unsigned int port_no
; /* 0 based port no. inside the host */
672 struct ata_prd
*prd
; /* our SG list */
673 dma_addr_t prd_dma
; /* and its DMA mapping */
675 #ifdef CONFIG_ATA_SFF
676 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
677 #endif /* CONFIG_ATA_SFF */
679 u8 ctl
; /* cache of ATA control register */
680 u8 last_ctl
; /* Cache last written value */
681 unsigned int pio_mask
;
682 unsigned int mwdma_mask
;
683 unsigned int udma_mask
;
684 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
686 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
687 unsigned long qc_allocated
;
688 unsigned int qc_active
;
689 int nr_active_links
; /* #links with active qcs */
691 struct ata_link link
; /* host default link */
693 int nr_pmp_links
; /* nr of available PMP links */
694 struct ata_link
*pmp_link
; /* array of PMP links */
695 struct ata_link
*excl_link
; /* for PMP qc exclusion */
697 struct ata_port_stats stats
;
698 struct ata_host
*host
;
701 void *port_task_data
;
702 struct delayed_work port_task
;
703 struct delayed_work hotplug_task
;
704 struct work_struct scsi_rescan_task
;
706 unsigned int hsm_task_state
;
709 struct list_head eh_done_q
;
710 wait_queue_head_t eh_wait_q
;
713 pm_message_t pm_mesg
;
715 enum link_pm pm_policy
;
717 struct timer_list fastdrain_timer
;
718 unsigned long fastdrain_cnt
;
723 #ifdef CONFIG_ATA_ACPI
724 acpi_handle acpi_handle
;
725 struct ata_acpi_gtm __acpi_init_gtm
; /* use ata_acpi_init_gtm() */
727 u8 sector_buf
[ATA_SECT_SIZE
]; /* owned by EH */
730 /* The following initializer overrides a method to NULL whether one of
731 * its parent has the method defined or not. This is equivalent to
732 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
733 * expression and thus can't be used as an initializer.
735 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
737 struct ata_port_operations
{
741 int (*qc_defer
)(struct ata_queued_cmd
*qc
);
742 int (*check_atapi_dma
)(struct ata_queued_cmd
*qc
);
743 void (*qc_prep
)(struct ata_queued_cmd
*qc
);
744 unsigned int (*qc_issue
)(struct ata_queued_cmd
*qc
);
745 bool (*qc_fill_rtf
)(struct ata_queued_cmd
*qc
);
748 * Configuration and exception handling
750 int (*cable_detect
)(struct ata_port
*ap
);
751 unsigned long (*mode_filter
)(struct ata_device
*dev
, unsigned long xfer_mask
);
752 void (*set_piomode
)(struct ata_port
*ap
, struct ata_device
*dev
);
753 void (*set_dmamode
)(struct ata_port
*ap
, struct ata_device
*dev
);
754 int (*set_mode
)(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
755 unsigned int (*read_id
)(struct ata_device
*dev
, struct ata_taskfile
*tf
, u16
*id
);
757 void (*dev_config
)(struct ata_device
*dev
);
759 void (*freeze
)(struct ata_port
*ap
);
760 void (*thaw
)(struct ata_port
*ap
);
761 ata_prereset_fn_t prereset
;
762 ata_reset_fn_t softreset
;
763 ata_reset_fn_t hardreset
;
764 ata_postreset_fn_t postreset
;
765 ata_prereset_fn_t pmp_prereset
;
766 ata_reset_fn_t pmp_softreset
;
767 ata_reset_fn_t pmp_hardreset
;
768 ata_postreset_fn_t pmp_postreset
;
769 void (*error_handler
)(struct ata_port
*ap
);
770 void (*post_internal_cmd
)(struct ata_queued_cmd
*qc
);
775 int (*scr_read
)(struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
);
776 int (*scr_write
)(struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
777 void (*pmp_attach
)(struct ata_port
*ap
);
778 void (*pmp_detach
)(struct ata_port
*ap
);
779 int (*enable_pm
)(struct ata_port
*ap
, enum link_pm policy
);
780 void (*disable_pm
)(struct ata_port
*ap
);
783 * Start, stop, suspend and resume
785 int (*port_suspend
)(struct ata_port
*ap
, pm_message_t mesg
);
786 int (*port_resume
)(struct ata_port
*ap
);
787 int (*port_start
)(struct ata_port
*ap
);
788 void (*port_stop
)(struct ata_port
*ap
);
789 void (*host_stop
)(struct ata_host
*host
);
791 #ifdef CONFIG_ATA_SFF
793 * SFF / taskfile oriented ops
795 void (*sff_dev_select
)(struct ata_port
*ap
, unsigned int device
);
796 u8 (*sff_check_status
)(struct ata_port
*ap
);
797 u8 (*sff_check_altstatus
)(struct ata_port
*ap
);
798 void (*sff_tf_load
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
799 void (*sff_tf_read
)(struct ata_port
*ap
, struct ata_taskfile
*tf
);
800 void (*sff_exec_command
)(struct ata_port
*ap
,
801 const struct ata_taskfile
*tf
);
802 unsigned int (*sff_data_xfer
)(struct ata_device
*dev
,
803 unsigned char *buf
, unsigned int buflen
, int rw
);
804 u8 (*sff_irq_on
)(struct ata_port
*);
805 void (*sff_irq_clear
)(struct ata_port
*);
807 void (*bmdma_setup
)(struct ata_queued_cmd
*qc
);
808 void (*bmdma_start
)(struct ata_queued_cmd
*qc
);
809 void (*bmdma_stop
)(struct ata_queued_cmd
*qc
);
810 u8 (*bmdma_status
)(struct ata_port
*ap
);
811 #endif /* CONFIG_ATA_SFF */
813 ssize_t (*em_show
)(struct ata_port
*ap
, char *buf
);
814 ssize_t (*em_store
)(struct ata_port
*ap
, const char *message
,
816 ssize_t (*sw_activity_show
)(struct ata_device
*dev
, char *buf
);
817 ssize_t (*sw_activity_store
)(struct ata_device
*dev
,
818 enum sw_activity val
);
822 void (*phy_reset
)(struct ata_port
*ap
);
823 void (*eng_timeout
)(struct ata_port
*ap
);
826 * ->inherits must be the last field and all the preceding
827 * fields must be pointers.
829 const struct ata_port_operations
*inherits
;
832 struct ata_port_info
{
834 unsigned long link_flags
;
835 unsigned long pio_mask
;
836 unsigned long mwdma_mask
;
837 unsigned long udma_mask
;
838 struct ata_port_operations
*port_ops
;
843 unsigned short mode
; /* ATA mode */
844 unsigned short setup
; /* t1 */
845 unsigned short act8b
; /* t2 for 8-bit I/O */
846 unsigned short rec8b
; /* t2i for 8-bit I/O */
847 unsigned short cyc8b
; /* t0 for 8-bit I/O */
848 unsigned short active
; /* t2 or tD */
849 unsigned short recover
; /* t2i or tK */
850 unsigned short cycle
; /* t0 */
851 unsigned short udma
; /* t2CYCTYP/2 */
855 * Core layer - drivers/ata/libata-core.c
857 extern const unsigned long sata_deb_timing_normal
[];
858 extern const unsigned long sata_deb_timing_hotplug
[];
859 extern const unsigned long sata_deb_timing_long
[];
861 extern struct ata_port_operations ata_dummy_port_ops
;
862 extern const struct ata_port_info ata_dummy_port_info
;
864 static inline const unsigned long *
865 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
867 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
868 return sata_deb_timing_hotplug
;
870 return sata_deb_timing_normal
;
873 static inline int ata_port_is_dummy(struct ata_port
*ap
)
875 return ap
->ops
== &ata_dummy_port_ops
;
878 extern void ata_port_probe(struct ata_port
*);
879 extern int sata_set_spd(struct ata_link
*link
);
880 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
881 extern int ata_wait_after_reset(struct ata_link
*link
, unsigned long deadline
,
882 int (*check_ready
)(struct ata_link
*link
));
883 extern int sata_link_debounce(struct ata_link
*link
,
884 const unsigned long *params
, unsigned long deadline
);
885 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
886 unsigned long deadline
);
887 extern int sata_link_hardreset(struct ata_link
*link
,
888 const unsigned long *timing
, unsigned long deadline
,
889 bool *online
, int (*check_ready
)(struct ata_link
*));
890 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
891 unsigned long deadline
);
892 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
893 extern void ata_port_disable(struct ata_port
*);
895 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
896 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
897 const struct ata_port_info
* const * ppi
, int n_ports
);
898 extern int ata_host_start(struct ata_host
*host
);
899 extern int ata_host_register(struct ata_host
*host
,
900 struct scsi_host_template
*sht
);
901 extern int ata_host_activate(struct ata_host
*host
, int irq
,
902 irq_handler_t irq_handler
, unsigned long irq_flags
,
903 struct scsi_host_template
*sht
);
904 extern void ata_host_detach(struct ata_host
*host
);
905 extern void ata_host_init(struct ata_host
*, struct device
*,
906 unsigned long, struct ata_port_operations
*);
907 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
908 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
909 extern int ata_scsi_queuecmd(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*));
910 extern void ata_sas_port_destroy(struct ata_port
*);
911 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
912 struct ata_port_info
*, struct Scsi_Host
*);
913 extern int ata_sas_port_init(struct ata_port
*);
914 extern int ata_sas_port_start(struct ata_port
*ap
);
915 extern void ata_sas_port_stop(struct ata_port
*ap
);
916 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
917 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*),
918 struct ata_port
*ap
);
919 extern int sata_scr_valid(struct ata_link
*link
);
920 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
921 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
922 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
923 extern int ata_link_online(struct ata_link
*link
);
924 extern int ata_link_offline(struct ata_link
*link
);
926 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
927 extern void ata_host_resume(struct ata_host
*host
);
929 extern int ata_ratelimit(void);
930 extern u32
ata_wait_register(void __iomem
*reg
, u32 mask
, u32 val
,
931 unsigned long interval
, unsigned long timeout
);
932 extern int atapi_cmd_type(u8 opcode
);
933 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
934 u8 pmp
, int is_cmd
, u8
*fis
);
935 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
936 extern unsigned long ata_pack_xfermask(unsigned long pio_mask
,
937 unsigned long mwdma_mask
, unsigned long udma_mask
);
938 extern void ata_unpack_xfermask(unsigned long xfer_mask
,
939 unsigned long *pio_mask
, unsigned long *mwdma_mask
,
940 unsigned long *udma_mask
);
941 extern u8
ata_xfer_mask2mode(unsigned long xfer_mask
);
942 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode
);
943 extern int ata_xfer_mode2shift(unsigned long xfer_mode
);
944 extern const char *ata_mode_string(unsigned long xfer_mask
);
945 extern unsigned long ata_id_xfermask(const u16
*id
);
946 extern int ata_port_start(struct ata_port
*ap
);
947 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
948 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
949 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
950 unsigned int n_elem
);
951 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
952 extern void ata_dev_disable(struct ata_device
*adev
);
953 extern void ata_id_string(const u16
*id
, unsigned char *s
,
954 unsigned int ofs
, unsigned int len
);
955 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
956 unsigned int ofs
, unsigned int len
);
957 extern unsigned int ata_do_dev_read_id(struct ata_device
*dev
,
958 struct ata_taskfile
*tf
, u16
*id
);
959 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
960 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
);
961 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
,
962 void (*done
)(struct scsi_cmnd
*));
963 extern int ata_std_bios_param(struct scsi_device
*sdev
,
964 struct block_device
*bdev
,
965 sector_t capacity
, int geom
[]);
966 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
967 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
968 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
970 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
971 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
973 extern int ata_cable_40wire(struct ata_port
*ap
);
974 extern int ata_cable_80wire(struct ata_port
*ap
);
975 extern int ata_cable_sata(struct ata_port
*ap
);
976 extern int ata_cable_ignore(struct ata_port
*ap
);
977 extern int ata_cable_unknown(struct ata_port
*ap
);
980 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
981 extern const struct ata_timing
*ata_timing_find_mode(u8 xfer_mode
);
982 extern int ata_timing_compute(struct ata_device
*, unsigned short,
983 struct ata_timing
*, int, int);
984 extern void ata_timing_merge(const struct ata_timing
*,
985 const struct ata_timing
*, struct ata_timing
*,
987 extern u8
ata_timing_cycle2mode(unsigned int xfer_shift
, int cycle
);
994 unsigned int reg
; /* PCI config register to read */
995 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1000 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
1001 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
1004 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1005 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
1006 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
1007 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
1008 #endif /* CONFIG_PM */
1009 #endif /* CONFIG_PCI */
1012 * ACPI - drivers/ata/libata-acpi.c
1014 #ifdef CONFIG_ATA_ACPI
1015 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1017 if (ap
->pflags
& ATA_PFLAG_INIT_GTM_VALID
)
1018 return &ap
->__acpi_init_gtm
;
1021 int ata_acpi_stm(struct ata_port
*ap
, const struct ata_acpi_gtm
*stm
);
1022 int ata_acpi_gtm(struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
1023 unsigned long ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1024 const struct ata_acpi_gtm
*gtm
);
1025 int ata_acpi_cbl_80wire(struct ata_port
*ap
, const struct ata_acpi_gtm
*gtm
);
1027 static inline const struct ata_acpi_gtm
*ata_acpi_init_gtm(struct ata_port
*ap
)
1032 static inline int ata_acpi_stm(const struct ata_port
*ap
,
1033 struct ata_acpi_gtm
*stm
)
1038 static inline int ata_acpi_gtm(const struct ata_port
*ap
,
1039 struct ata_acpi_gtm
*stm
)
1044 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device
*dev
,
1045 const struct ata_acpi_gtm
*gtm
)
1050 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
,
1051 const struct ata_acpi_gtm
*gtm
)
1058 * EH - drivers/ata/libata-eh.c
1060 extern void ata_port_schedule_eh(struct ata_port
*ap
);
1061 extern int ata_link_abort(struct ata_link
*link
);
1062 extern int ata_port_abort(struct ata_port
*ap
);
1063 extern int ata_port_freeze(struct ata_port
*ap
);
1064 extern int sata_async_notification(struct ata_port
*ap
);
1066 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1067 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1069 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1070 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1071 extern void ata_eh_analyze_ncq_error(struct ata_link
*link
);
1073 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1074 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1075 ata_postreset_fn_t postreset
);
1076 extern void ata_std_error_handler(struct ata_port
*ap
);
1079 * Base operations to inherit from and initializers for sht
1083 * base : Common to all libata drivers.
1084 * sata : SATA controllers w/ native interface.
1085 * pmp : SATA controllers w/ PMP support.
1086 * sff : SFF ATA controllers w/o BMDMA support.
1087 * bmdma : SFF ATA controllers w/ BMDMA support.
1091 * BASE : Common to all libata drivers. The user must set
1092 * sg_tablesize and dma_boundary.
1093 * PIO : SFF ATA controllers w/ only PIO support.
1094 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1095 * dma_boundary are set to BMDMA limits.
1096 * NCQ : SATA controllers supporting NCQ. The user must set
1097 * sg_tablesize, dma_boundary and can_queue.
1099 extern const struct ata_port_operations ata_base_port_ops
;
1100 extern const struct ata_port_operations sata_port_ops
;
1102 #define ATA_BASE_SHT(drv_name) \
1103 .module = THIS_MODULE, \
1105 .ioctl = ata_scsi_ioctl, \
1106 .queuecommand = ata_scsi_queuecmd, \
1107 .can_queue = ATA_DEF_QUEUE, \
1108 .this_id = ATA_SHT_THIS_ID, \
1109 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1110 .emulated = ATA_SHT_EMULATED, \
1111 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1112 .proc_name = drv_name, \
1113 .slave_configure = ata_scsi_slave_config, \
1114 .slave_destroy = ata_scsi_slave_destroy, \
1115 .bios_param = ata_std_bios_param
1117 #define ATA_NCQ_SHT(drv_name) \
1118 ATA_BASE_SHT(drv_name), \
1119 .change_queue_depth = ata_scsi_change_queue_depth
1124 #ifdef CONFIG_SATA_PMP
1125 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1127 return ap
->flags
& ATA_FLAG_PMP
;
1130 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1132 return ap
->nr_pmp_links
!= 0;
1135 static inline int ata_is_host_link(const struct ata_link
*link
)
1137 return link
== &link
->ap
->link
;
1139 #else /* CONFIG_SATA_PMP */
1140 static inline bool sata_pmp_supported(struct ata_port
*ap
)
1145 static inline bool sata_pmp_attached(struct ata_port
*ap
)
1150 static inline int ata_is_host_link(const struct ata_link
*link
)
1154 #endif /* CONFIG_SATA_PMP */
1156 static inline int sata_srst_pmp(struct ata_link
*link
)
1158 if (sata_pmp_supported(link
->ap
) && ata_is_host_link(link
))
1159 return SATA_PMP_CTRL_PORT
;
1166 #define ata_port_printk(ap, lv, fmt, args...) \
1167 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
1169 #define ata_link_printk(link, lv, fmt, args...) do { \
1170 if (sata_pmp_attached((link)->ap)) \
1171 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
1172 (link)->pmp , ##args); \
1174 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
1177 #define ata_dev_printk(dev, lv, fmt, args...) \
1178 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
1179 (dev)->link->pmp + (dev)->devno , ##args)
1182 * ata_eh_info helpers
1184 extern void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1185 __attribute__ ((format (printf
, 2, 3)));
1186 extern void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1187 __attribute__ ((format (printf
, 2, 3)));
1188 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1190 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1192 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1193 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1194 ehi
->action
|= ATA_EH_RESET
| ATA_EH_ENABLE_LINK
;
1195 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1199 * port description helpers
1201 extern void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...)
1202 __attribute__ ((format (printf
, 2, 3)));
1204 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1208 static inline unsigned int ata_tag_valid(unsigned int tag
)
1210 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1213 static inline unsigned int ata_tag_internal(unsigned int tag
)
1215 return tag
== ATA_TAG_INTERNAL
;
1221 static inline unsigned int ata_class_enabled(unsigned int class)
1223 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1224 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
;
1227 static inline unsigned int ata_class_disabled(unsigned int class)
1229 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1230 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
;
1233 static inline unsigned int ata_class_absent(unsigned int class)
1235 return !ata_class_enabled(class) && !ata_class_disabled(class);
1238 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1240 return ata_class_enabled(dev
->class);
1243 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1245 return ata_class_disabled(dev
->class);
1248 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1250 return ata_class_absent(dev
->class);
1256 static inline int ata_link_max_devices(const struct ata_link
*link
)
1258 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1263 static inline int ata_link_active(struct ata_link
*link
)
1265 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1268 static inline struct ata_link
*ata_port_first_link(struct ata_port
*ap
)
1270 if (sata_pmp_attached(ap
))
1271 return ap
->pmp_link
;
1275 static inline struct ata_link
*ata_port_next_link(struct ata_link
*link
)
1277 struct ata_port
*ap
= link
->ap
;
1279 if (ata_is_host_link(link
)) {
1280 if (!sata_pmp_attached(ap
))
1282 return ap
->pmp_link
;
1285 if (++link
< ap
->nr_pmp_links
+ ap
->pmp_link
)
1290 #define __ata_port_for_each_link(lk, ap) \
1291 for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
1293 #define ata_port_for_each_link(link, ap) \
1294 for ((link) = ata_port_first_link(ap); (link); \
1295 (link) = ata_port_next_link(link))
1297 #define ata_link_for_each_dev(dev, link) \
1298 for ((dev) = (link)->device; \
1299 (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
1302 #define ata_link_for_each_dev_reverse(dev, link) \
1303 for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
1304 (dev) >= (link)->device || ((dev) = NULL); (dev)--)
1307 * ata_ncq_enabled - Test whether NCQ is enabled
1308 * @dev: ATA device to test for
1311 * spin_lock_irqsave(host lock)
1314 * 1 if NCQ is enabled for @dev, 0 otherwise.
1316 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1318 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1319 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1322 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1324 qc
->tf
.ctl
|= ATA_NIEN
;
1327 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1330 if (likely(ata_tag_valid(tag
)))
1331 return &ap
->qcmd
[tag
];
1335 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1338 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1340 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1343 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1344 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1350 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd
*qc
)
1352 return qc
->nbytes
- min(qc
->extrabytes
, qc
->nbytes
);
1355 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1357 memset(tf
, 0, sizeof(*tf
));
1359 tf
->ctl
= dev
->link
->ap
->ctl
;
1360 if (dev
->devno
== 0)
1361 tf
->device
= ATA_DEVICE_OBS
;
1363 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1366 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1368 qc
->dma_dir
= DMA_NONE
;
1373 qc
->nbytes
= qc
->extrabytes
= qc
->curbytes
= 0;
1376 qc
->sect_size
= ATA_SECT_SIZE
;
1378 ata_tf_init(qc
->dev
, &qc
->tf
);
1380 /* init result_tf such that it indicates normal completion */
1381 qc
->result_tf
.command
= ATA_DRDY
;
1382 qc
->result_tf
.feature
= 0;
1385 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1387 return ata_id_wcache_enabled(dev
->id
) ||
1388 ata_id_has_flush(dev
->id
) ||
1389 ata_id_has_flush_ext(dev
->id
);
1392 static inline unsigned int ac_err_mask(u8 status
)
1394 if (status
& (ATA_BUSY
| ATA_DRQ
))
1396 if (status
& (ATA_ERR
| ATA_DF
))
1401 static inline unsigned int __ac_err_mask(u8 status
)
1403 unsigned int mask
= ac_err_mask(status
);
1405 return AC_ERR_OTHER
;
1409 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1411 return *(struct ata_port
**)&host
->hostdata
[0];
1414 static inline int ata_check_ready(u8 status
)
1416 if (!(status
& ATA_BUSY
))
1419 /* 0xff indicates either no device or device not ready */
1426 static inline unsigned long ata_deadline(unsigned long from_jiffies
,
1427 unsigned long timeout_msecs
)
1429 return from_jiffies
+ msecs_to_jiffies(timeout_msecs
);
1433 /**************************************************************************
1434 * PMP - drivers/ata/libata-pmp.c
1436 #ifdef CONFIG_SATA_PMP
1438 extern const struct ata_port_operations sata_pmp_port_ops
;
1440 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
1441 extern void sata_pmp_error_handler(struct ata_port
*ap
);
1443 #else /* CONFIG_SATA_PMP */
1445 #define sata_pmp_port_ops sata_port_ops
1446 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1447 #define sata_pmp_error_handler ata_std_error_handler
1449 #endif /* CONFIG_SATA_PMP */
1452 /**************************************************************************
1453 * SFF - drivers/ata/libata-sff.c
1455 #ifdef CONFIG_ATA_SFF
1457 extern const struct ata_port_operations ata_sff_port_ops
;
1458 extern const struct ata_port_operations ata_bmdma_port_ops
;
1460 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1461 #define ATA_PIO_SHT(drv_name) \
1462 ATA_BASE_SHT(drv_name), \
1463 .sg_tablesize = LIBATA_MAX_PRD, \
1464 .dma_boundary = ATA_DMA_BOUNDARY
1466 #define ATA_BMDMA_SHT(drv_name) \
1467 ATA_BASE_SHT(drv_name), \
1468 .sg_tablesize = LIBATA_MAX_PRD, \
1469 .dma_boundary = ATA_DMA_BOUNDARY
1471 extern void ata_sff_qc_prep(struct ata_queued_cmd
*qc
);
1472 extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd
*qc
);
1473 extern void ata_sff_dev_select(struct ata_port
*ap
, unsigned int device
);
1474 extern u8
ata_sff_check_status(struct ata_port
*ap
);
1475 extern void ata_sff_pause(struct ata_port
*ap
);
1476 extern void ata_sff_dma_pause(struct ata_port
*ap
);
1477 extern int ata_sff_busy_sleep(struct ata_port
*ap
,
1478 unsigned long timeout_pat
, unsigned long timeout
);
1479 extern int ata_sff_wait_ready(struct ata_link
*link
, unsigned long deadline
);
1480 extern void ata_sff_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
1481 extern void ata_sff_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
1482 extern void ata_sff_exec_command(struct ata_port
*ap
,
1483 const struct ata_taskfile
*tf
);
1484 extern unsigned int ata_sff_data_xfer(struct ata_device
*dev
,
1485 unsigned char *buf
, unsigned int buflen
, int rw
);
1486 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device
*dev
,
1487 unsigned char *buf
, unsigned int buflen
, int rw
);
1488 extern u8
ata_sff_irq_on(struct ata_port
*ap
);
1489 extern void ata_sff_irq_clear(struct ata_port
*ap
);
1490 extern int ata_sff_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
1491 u8 status
, int in_wq
);
1492 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd
*qc
);
1493 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd
*qc
);
1494 extern unsigned int ata_sff_host_intr(struct ata_port
*ap
,
1495 struct ata_queued_cmd
*qc
);
1496 extern irqreturn_t
ata_sff_interrupt(int irq
, void *dev_instance
);
1497 extern void ata_sff_freeze(struct ata_port
*ap
);
1498 extern void ata_sff_thaw(struct ata_port
*ap
);
1499 extern int ata_sff_prereset(struct ata_link
*link
, unsigned long deadline
);
1500 extern unsigned int ata_sff_dev_classify(struct ata_device
*dev
, int present
,
1502 extern int ata_sff_wait_after_reset(struct ata_link
*link
, unsigned int devmask
,
1503 unsigned long deadline
);
1504 extern int ata_sff_softreset(struct ata_link
*link
, unsigned int *classes
,
1505 unsigned long deadline
);
1506 extern int sata_sff_hardreset(struct ata_link
*link
, unsigned int *class,
1507 unsigned long deadline
);
1508 extern void ata_sff_postreset(struct ata_link
*link
, unsigned int *classes
);
1509 extern void ata_sff_error_handler(struct ata_port
*ap
);
1510 extern void ata_sff_post_internal_cmd(struct ata_queued_cmd
*qc
);
1511 extern int ata_sff_port_start(struct ata_port
*ap
);
1512 extern void ata_sff_std_ports(struct ata_ioports
*ioaddr
);
1513 extern unsigned long ata_bmdma_mode_filter(struct ata_device
*dev
,
1514 unsigned long xfer_mask
);
1515 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
1516 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
1517 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
1518 extern u8
ata_bmdma_status(struct ata_port
*ap
);
1519 extern void ata_bus_reset(struct ata_port
*ap
);
1522 extern int ata_pci_bmdma_clear_simplex(struct pci_dev
*pdev
);
1523 extern int ata_pci_bmdma_init(struct ata_host
*host
);
1524 extern int ata_pci_sff_init_host(struct ata_host
*host
);
1525 extern int ata_pci_sff_prepare_host(struct pci_dev
*pdev
,
1526 const struct ata_port_info
* const * ppi
,
1527 struct ata_host
**r_host
);
1528 extern int ata_pci_sff_activate_host(struct ata_host
*host
,
1529 irq_handler_t irq_handler
,
1530 struct scsi_host_template
*sht
);
1531 extern int ata_pci_sff_init_one(struct pci_dev
*pdev
,
1532 const struct ata_port_info
* const * ppi
,
1533 struct scsi_host_template
*sht
, void *host_priv
);
1534 #endif /* CONFIG_PCI */
1537 * ata_sff_busy_wait - Wait for a port status register
1538 * @ap: Port to wait for.
1539 * @bits: bits that must be clear
1540 * @max: number of 10uS waits to perform
1542 * Waits up to max*10 microseconds for the selected bits in the port's
1543 * status register to be cleared.
1544 * Returns final value of status register.
1547 * Inherited from caller.
1549 static inline u8
ata_sff_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1556 status
= ap
->ops
->sff_check_status(ap
);
1558 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1564 * ata_wait_idle - Wait for a port to be idle.
1565 * @ap: Port to wait for.
1567 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1568 * Returns final value of status register.
1571 * Inherited from caller.
1573 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1575 u8 status
= ata_sff_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1578 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1579 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1585 #endif /* CONFIG_ATA_SFF */
1587 #endif /* __LINUX_LIBATA_H__ */