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/interrupt.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/scatterlist.h>
34 #include <linux/ata.h>
35 #include <linux/workqueue.h>
36 #include <scsi/scsi_host.h>
37 #include <linux/acpi.h>
40 * Define if arch has non-standard setup. This is a _PCI_ standard
41 * not a legacy or ISA standard.
43 #ifdef CONFIG_ATA_NONSTANDARD
44 #include <asm/libata-portmap.h>
46 #include <asm-generic/libata-portmap.h>
50 * compile-time options: to be removed as soon as all the drivers are
51 * converted to the new debugging mechanism
53 #undef ATA_DEBUG /* debugging output */
54 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
55 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
56 #undef ATA_NDEBUG /* define to disable quick runtime checks */
59 /* note: prints function name for you */
61 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
62 #ifdef ATA_VERBOSE_DEBUG
63 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
65 #define VPRINTK(fmt, args...)
66 #endif /* ATA_VERBOSE_DEBUG */
68 #define DPRINTK(fmt, args...)
69 #define VPRINTK(fmt, args...)
70 #endif /* ATA_DEBUG */
72 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
74 /* NEW: debug levels */
75 #define HAVE_LIBATA_MSG 1
79 ATA_MSG_INFO
= 0x0002,
80 ATA_MSG_PROBE
= 0x0004,
81 ATA_MSG_WARN
= 0x0008,
82 ATA_MSG_MALLOC
= 0x0010,
84 ATA_MSG_INTR
= 0x0040,
88 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
89 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
90 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
91 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
92 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
93 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
94 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
95 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
97 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
99 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
100 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
103 return (1 << dval
) - 1;
106 /* defines only for the constants which don't work well as enums */
107 #define ATA_TAG_POISON 0xfafbfcfdU
110 /* various global constants */
111 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
112 LIBATA_DUMB_MAX_PRD
= ATA_MAX_PRD
/ 4, /* Worst case */
115 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
117 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
- 1,
119 ATA_DEF_BUSY_WAIT
= 10000,
120 ATA_SHORT_PAUSE
= (HZ
>> 6) + 1,
122 ATA_SHT_EMULATED
= 1,
123 ATA_SHT_CMD_PER_LUN
= 1,
124 ATA_SHT_THIS_ID
= -1,
125 ATA_SHT_USE_CLUSTERING
= 1,
127 /* struct ata_device stuff */
128 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
129 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
130 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
131 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
132 ATA_DFLAG_FLUSH_EXT
= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
133 ATA_DFLAG_ACPI_PENDING
= (1 << 5), /* ACPI resume action pending */
134 ATA_DFLAG_ACPI_FAILED
= (1 << 6), /* ACPI on devcfg has failed */
135 ATA_DFLAG_AN
= (1 << 7), /* AN configured */
136 ATA_DFLAG_HIPM
= (1 << 8), /* device supports HIPM */
137 ATA_DFLAG_DIPM
= (1 << 9), /* device supports DIPM */
138 ATA_DFLAG_CFG_MASK
= (1 << 12) - 1,
140 ATA_DFLAG_PIO
= (1 << 12), /* device limited to PIO mode */
141 ATA_DFLAG_NCQ_OFF
= (1 << 13), /* device limited to non-NCQ mode */
142 ATA_DFLAG_SPUNDOWN
= (1 << 14), /* XXX: for spindown_compat */
143 ATA_DFLAG_SLEEPING
= (1 << 15), /* device is sleeping */
144 ATA_DFLAG_INIT_MASK
= (1 << 16) - 1,
146 ATA_DFLAG_DETACH
= (1 << 16),
147 ATA_DFLAG_DETACHED
= (1 << 17),
149 ATA_DEV_UNKNOWN
= 0, /* unknown device */
150 ATA_DEV_ATA
= 1, /* ATA device */
151 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
152 ATA_DEV_ATAPI
= 3, /* ATAPI device */
153 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
154 ATA_DEV_PMP
= 5, /* SATA port multiplier */
155 ATA_DEV_PMP_UNSUP
= 6, /* SATA port multiplier (unsupported) */
156 ATA_DEV_SEMB
= 7, /* SEMB */
157 ATA_DEV_SEMB_UNSUP
= 8, /* SEMB (unsupported) */
158 ATA_DEV_NONE
= 9, /* no device */
160 /* struct ata_link flags */
161 ATA_LFLAG_HRST_TO_RESUME
= (1 << 0), /* hardreset to resume link */
162 ATA_LFLAG_SKIP_D2H_BSY
= (1 << 1), /* can't wait for the first D2H
163 * Register FIS clearing BSY */
164 ATA_LFLAG_NO_SRST
= (1 << 2), /* avoid softreset */
165 ATA_LFLAG_ASSUME_ATA
= (1 << 3), /* assume ATA class */
166 ATA_LFLAG_ASSUME_SEMB
= (1 << 4), /* assume SEMB class */
167 ATA_LFLAG_ASSUME_CLASS
= ATA_LFLAG_ASSUME_ATA
| ATA_LFLAG_ASSUME_SEMB
,
168 ATA_LFLAG_NO_RETRY
= (1 << 5), /* don't retry this link */
169 ATA_LFLAG_DISABLED
= (1 << 6), /* link is disabled */
171 /* struct ata_port flags */
172 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
173 /* (doesn't imply presence) */
174 ATA_FLAG_SATA
= (1 << 1),
175 ATA_FLAG_NO_LEGACY
= (1 << 2), /* no legacy mode check */
176 ATA_FLAG_MMIO
= (1 << 3), /* use MMIO, not PIO */
177 ATA_FLAG_SRST
= (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
178 ATA_FLAG_SATA_RESET
= (1 << 5), /* (obsolete) use COMRESET */
179 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
180 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
181 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
182 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
183 * doesn't handle PIO interrupts */
184 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
185 ATA_FLAG_DEBUGMSG
= (1 << 13),
186 ATA_FLAG_IGN_SIMPLEX
= (1 << 15), /* ignore SIMPLEX */
187 ATA_FLAG_NO_IORDY
= (1 << 16), /* controller lacks iordy */
188 ATA_FLAG_ACPI_SATA
= (1 << 17), /* need native SATA ACPI layout */
189 ATA_FLAG_AN
= (1 << 18), /* controller supports AN */
190 ATA_FLAG_PMP
= (1 << 19), /* controller supports PMP */
191 ATA_FLAG_IPM
= (1 << 20), /* driver can handle IPM */
193 /* The following flag belongs to ap->pflags but is kept in
194 * ap->flags because it's referenced in many LLDs and will be
195 * removed in not-too-distant future.
197 ATA_FLAG_DISABLED
= (1 << 23), /* port is disabled, ignore it */
199 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
201 /* struct ata_port pflags */
202 ATA_PFLAG_EH_PENDING
= (1 << 0), /* EH pending */
203 ATA_PFLAG_EH_IN_PROGRESS
= (1 << 1), /* EH in progress */
204 ATA_PFLAG_FROZEN
= (1 << 2), /* port is frozen */
205 ATA_PFLAG_RECOVERED
= (1 << 3), /* recovery action performed */
206 ATA_PFLAG_LOADING
= (1 << 4), /* boot/loading probe */
207 ATA_PFLAG_UNLOADING
= (1 << 5), /* module is unloading */
208 ATA_PFLAG_SCSI_HOTPLUG
= (1 << 6), /* SCSI hotplug scheduled */
209 ATA_PFLAG_INITIALIZING
= (1 << 7), /* being initialized, don't touch */
210 ATA_PFLAG_RESETTING
= (1 << 8), /* reset in progress */
212 ATA_PFLAG_SUSPENDED
= (1 << 17), /* port is suspended (power) */
213 ATA_PFLAG_PM_PENDING
= (1 << 18), /* PM operation pending */
214 ATA_PFLAG_GTM_VALID
= (1 << 19), /* acpi_gtm data valid */
216 /* struct ata_queued_cmd flags */
217 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
218 ATA_QCFLAG_SG
= (1 << 1), /* have s/g table? */
219 ATA_QCFLAG_SINGLE
= (1 << 2), /* no s/g, just a single buffer */
220 ATA_QCFLAG_DMAMAP
= ATA_QCFLAG_SG
| ATA_QCFLAG_SINGLE
,
221 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
222 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
223 ATA_QCFLAG_CLEAR_EXCL
= (1 << 5), /* clear excl_link on completion */
225 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
226 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
227 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
230 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host only */
231 ATA_HOST_STARTED
= (1 << 1), /* Host started */
233 /* bits 24:31 of host->flags are reserved for LLD specific flags */
235 /* various lengths of time */
236 ATA_TMOUT_BOOT
= 30 * HZ
, /* heuristic */
237 ATA_TMOUT_BOOT_QUICK
= 7 * HZ
, /* heuristic */
238 ATA_TMOUT_INTERNAL
= 30 * HZ
,
239 ATA_TMOUT_INTERNAL_QUICK
= 5 * HZ
,
241 /* FIXME: GoVault needs 2s but we can't afford that without
242 * parallel probing. 800ms is enough for iVDR disk
243 * HHD424020F7SV00. Increase to 2secs when parallel probing
246 ATA_TMOUT_FF_WAIT
= 4 * HZ
/ 5,
260 /* SATA port states */
265 /* encoding various smaller bitmaps into a single
266 * unsigned int bitmap
273 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_BITS_PIO
,
274 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_BITS_MWDMA
,
276 ATA_MASK_PIO
= ((1 << ATA_BITS_PIO
) - 1) << ATA_SHIFT_PIO
,
277 ATA_MASK_MWDMA
= ((1 << ATA_BITS_MWDMA
) - 1) << ATA_SHIFT_MWDMA
,
278 ATA_MASK_UDMA
= ((1 << ATA_BITS_UDMA
) - 1) << ATA_SHIFT_UDMA
,
280 /* size of buffer to pad xfers ending on unaligned boundaries */
282 ATA_DMA_PAD_BUF_SZ
= ATA_DMA_PAD_SZ
* ATA_MAX_QUEUE
,
287 /* return values for ->qc_defer */
291 /* desc_len for ata_eh_info and context */
292 ATA_EH_DESC_LEN
= 80,
294 /* reset / recovery action types */
295 ATA_EH_REVALIDATE
= (1 << 0),
296 ATA_EH_SOFTRESET
= (1 << 1),
297 ATA_EH_HARDRESET
= (1 << 2),
298 ATA_EH_ENABLE_LINK
= (1 << 3),
300 ATA_EH_RESET_MASK
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
301 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
,
303 /* ata_eh_info->flags */
304 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
305 ATA_EHI_RESUME_LINK
= (1 << 1), /* resume link (reset modifier) */
306 ATA_EHI_NO_AUTOPSY
= (1 << 2), /* no autopsy */
307 ATA_EHI_QUIET
= (1 << 3), /* be quiet */
308 ATA_EHI_LPM
= (1 << 4), /* link power management action */
310 ATA_EHI_DID_SOFTRESET
= (1 << 16), /* already soft-reset this port */
311 ATA_EHI_DID_HARDRESET
= (1 << 17), /* already soft-reset this port */
312 ATA_EHI_PRINTINFO
= (1 << 18), /* print configuration info */
313 ATA_EHI_SETMODE
= (1 << 19), /* configure transfer mode */
314 ATA_EHI_POST_SETMODE
= (1 << 20), /* revaildating after setmode */
316 ATA_EHI_DID_RESET
= ATA_EHI_DID_SOFTRESET
| ATA_EHI_DID_HARDRESET
,
317 ATA_EHI_RESET_MODIFIER_MASK
= ATA_EHI_RESUME_LINK
,
319 /* max tries if error condition is still set after ->error_handler */
320 ATA_EH_MAX_TRIES
= 5,
322 /* how hard are we gonna try to probe/recover devices */
323 ATA_PROBE_MAX_TRIES
= 3,
324 ATA_EH_DEV_TRIES
= 3,
325 ATA_EH_PMP_TRIES
= 5,
326 ATA_EH_PMP_LINK_TRIES
= 3,
328 SATA_PMP_SCR_TIMEOUT
= 250,
330 /* Horkage types. May be set by libata or controller on drives
331 (some horkage may be drive/controller pair dependant */
333 ATA_HORKAGE_DIAGNOSTIC
= (1 << 0), /* Failed boot diag */
334 ATA_HORKAGE_NODMA
= (1 << 1), /* DMA problems */
335 ATA_HORKAGE_NONCQ
= (1 << 2), /* Don't use NCQ */
336 ATA_HORKAGE_MAX_SEC_128
= (1 << 3), /* Limit max sects to 128 */
337 ATA_HORKAGE_BROKEN_HPA
= (1 << 4), /* Broken HPA */
338 ATA_HORKAGE_SKIP_PM
= (1 << 5), /* Skip PM operations */
339 ATA_HORKAGE_HPA_SIZE
= (1 << 6), /* native size off by one */
340 ATA_HORKAGE_IPM
= (1 << 7), /* Link PM problems */
342 /* DMA mask for user DMA control: User visible values; DO NOT
344 ATA_DMA_MASK_ATA
= (1 << 0), /* DMA on ATA Disk */
345 ATA_DMA_MASK_ATAPI
= (1 << 1), /* DMA on ATAPI */
346 ATA_DMA_MASK_CFA
= (1 << 2), /* DMA on CF Card */
349 enum hsm_task_states
{
350 HSM_ST_IDLE
, /* no command on going */
351 HSM_ST_FIRST
, /* (waiting the device to)
352 write CDB or first data block */
353 HSM_ST
, /* (waiting the device to) transfer data */
354 HSM_ST_LAST
, /* (waiting the device to) complete command */
355 HSM_ST_ERR
, /* error */
358 enum ata_completion_errors
{
359 AC_ERR_DEV
= (1 << 0), /* device reported error */
360 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
361 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
362 AC_ERR_MEDIA
= (1 << 3), /* media error */
363 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
364 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
365 AC_ERR_SYSTEM
= (1 << 6), /* system error */
366 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
367 AC_ERR_OTHER
= (1 << 8), /* unknown */
368 AC_ERR_NODEV_HINT
= (1 << 9), /* polling device detection hint */
369 AC_ERR_NCQ
= (1 << 10), /* marker for offending NCQ qc */
372 /* forward declarations */
374 struct ata_port_operations
;
377 struct ata_queued_cmd
;
380 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
381 typedef int (*ata_prereset_fn_t
)(struct ata_link
*link
, unsigned long deadline
);
382 typedef int (*ata_reset_fn_t
)(struct ata_link
*link
, unsigned int *classes
,
383 unsigned long deadline
);
384 typedef void (*ata_postreset_fn_t
)(struct ata_link
*link
, unsigned int *classes
);
387 * host pm policy: If you alter this, you also need to alter libata-scsi.c
388 * (for the ascii descriptions)
396 extern struct class_device_attribute class_device_attr_link_power_management_policy
;
399 void __iomem
*cmd_addr
;
400 void __iomem
*data_addr
;
401 void __iomem
*error_addr
;
402 void __iomem
*feature_addr
;
403 void __iomem
*nsect_addr
;
404 void __iomem
*lbal_addr
;
405 void __iomem
*lbam_addr
;
406 void __iomem
*lbah_addr
;
407 void __iomem
*device_addr
;
408 void __iomem
*status_addr
;
409 void __iomem
*command_addr
;
410 void __iomem
*altstatus_addr
;
411 void __iomem
*ctl_addr
;
412 void __iomem
*bmdma_addr
;
413 void __iomem
*scr_addr
;
419 void __iomem
* const *iomap
;
420 unsigned int n_ports
;
422 const struct ata_port_operations
*ops
;
424 #ifdef CONFIG_ATA_ACPI
425 acpi_handle acpi_handle
;
427 struct ata_port
*simplex_claimed
; /* channel owning the DMA */
428 struct ata_port
*ports
[0];
431 struct ata_queued_cmd
{
433 struct ata_device
*dev
;
435 struct scsi_cmnd
*scsicmd
;
436 void (*scsidone
)(struct scsi_cmnd
*);
438 struct ata_taskfile tf
;
439 u8 cdb
[ATAPI_CDB_LEN
];
441 unsigned long flags
; /* ATA_QCFLAG_xxx */
445 unsigned int orig_n_elem
;
449 unsigned int pad_len
;
450 unsigned int sect_size
;
453 unsigned int curbytes
;
455 struct scatterlist
*cursg
;
456 unsigned int cursg_ofs
;
458 struct scatterlist sgent
;
459 struct scatterlist pad_sgent
;
462 /* DO NOT iterate over __sg manually, use ata_for_each_sg() */
463 struct scatterlist
*__sg
;
465 unsigned int err_mask
;
466 struct ata_taskfile result_tf
;
467 ata_qc_cb_t complete_fn
;
473 struct ata_port_stats
{
474 unsigned long unhandled_irq
;
475 unsigned long idle_irq
;
476 unsigned long rw_reqbuf
;
479 struct ata_ering_entry
{
481 unsigned int err_mask
;
487 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
491 struct ata_link
*link
;
492 unsigned int devno
; /* 0 or 1 */
493 unsigned long flags
; /* ATA_DFLAG_xxx */
494 unsigned int horkage
; /* List of broken features */
495 struct scsi_device
*sdev
; /* attached SCSI device */
496 #ifdef CONFIG_ATA_ACPI
497 acpi_handle acpi_handle
;
499 /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
500 u64 n_sectors
; /* size of device, if ATA */
501 unsigned int class; /* ATA_DEV_xxx */
504 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
505 u32 gscr
[SATA_PMP_GSCR_DWORDS
]; /* PMP GSCR block */
511 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
513 unsigned int multi_count
; /* sectors count for
514 READ/WRITE MULTIPLE */
515 unsigned int max_sectors
; /* per-device max sectors */
516 unsigned int cdb_len
;
518 /* per-dev xfer mask */
519 unsigned int pio_mask
;
520 unsigned int mwdma_mask
;
521 unsigned int udma_mask
;
523 /* for CHS addressing */
524 u16 cylinders
; /* Number of cylinders */
525 u16 heads
; /* Number of heads */
526 u16 sectors
; /* Number of sectors per track */
529 struct ata_ering ering
;
533 /* Offset into struct ata_device. Fields above it are maintained
534 * acress device init. Fields below are zeroed.
536 #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
539 struct ata_device
*dev
; /* offending device */
540 u32 serror
; /* SError from LLDD */
541 unsigned int err_mask
; /* port-wide err_mask */
542 unsigned int action
; /* ATA_EH_* action mask */
543 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
544 unsigned int flags
; /* ATA_EHI_* flags */
546 unsigned int probe_mask
;
548 char desc
[ATA_EH_DESC_LEN
];
552 struct ata_eh_context
{
553 struct ata_eh_info i
;
554 int tries
[ATA_MAX_DEVICES
];
555 unsigned int classes
[ATA_MAX_DEVICES
];
556 unsigned int did_probe_mask
;
559 struct ata_acpi_drive
565 struct ata_acpi_gtm
{
566 struct ata_acpi_drive drive
[2];
572 int pmp
; /* port multiplier port # */
574 unsigned int active_tag
; /* active tag on this link */
575 u32 sactive
; /* active NCQ commands */
577 unsigned int flags
; /* ATA_LFLAG_xxx */
579 unsigned int hw_sata_spd_limit
;
580 unsigned int sata_spd_limit
;
581 unsigned int sata_spd
; /* current SATA PHY speed */
583 /* record runtime error info, protected by host_set lock */
584 struct ata_eh_info eh_info
;
586 struct ata_eh_context eh_context
;
588 struct ata_device device
[ATA_MAX_DEVICES
];
592 struct Scsi_Host
*scsi_host
; /* our co-allocated scsi host */
593 const struct ata_port_operations
*ops
;
595 unsigned long flags
; /* ATA_FLAG_xxx */
596 unsigned int pflags
; /* ATA_PFLAG_xxx */
597 unsigned int print_id
; /* user visible unique port ID */
598 unsigned int port_no
; /* 0 based port no. inside the host */
600 struct ata_prd
*prd
; /* our SG list */
601 dma_addr_t prd_dma
; /* and its DMA mapping */
603 void *pad
; /* array of DMA pad buffers */
606 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
608 u8 ctl
; /* cache of ATA control register */
609 u8 last_ctl
; /* Cache last written value */
610 unsigned int pio_mask
;
611 unsigned int mwdma_mask
;
612 unsigned int udma_mask
;
613 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
615 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
616 unsigned long qc_allocated
;
617 unsigned int qc_active
;
618 int nr_active_links
; /* #links with active qcs */
620 struct ata_link link
; /* host default link */
622 int nr_pmp_links
; /* nr of available PMP links */
623 struct ata_link
*pmp_link
; /* array of PMP links */
624 struct ata_link
*excl_link
; /* for PMP qc exclusion */
626 struct ata_port_stats stats
;
627 struct ata_host
*host
;
630 void *port_task_data
;
631 struct delayed_work port_task
;
632 struct delayed_work hotplug_task
;
633 struct work_struct scsi_rescan_task
;
635 unsigned int hsm_task_state
;
638 struct list_head eh_done_q
;
639 wait_queue_head_t eh_wait_q
;
642 pm_message_t pm_mesg
;
644 enum link_pm pm_policy
;
646 struct timer_list fastdrain_timer
;
647 unsigned long fastdrain_cnt
;
651 #ifdef CONFIG_ATA_ACPI
652 acpi_handle acpi_handle
;
653 struct ata_acpi_gtm acpi_gtm
;
655 u8 sector_buf
[ATA_SECT_SIZE
]; /* owned by EH */
658 struct ata_port_operations
{
659 void (*dev_config
) (struct ata_device
*);
661 void (*set_piomode
) (struct ata_port
*, struct ata_device
*);
662 void (*set_dmamode
) (struct ata_port
*, struct ata_device
*);
663 unsigned long (*mode_filter
) (struct ata_device
*, unsigned long);
665 void (*tf_load
) (struct ata_port
*ap
, const struct ata_taskfile
*tf
);
666 void (*tf_read
) (struct ata_port
*ap
, struct ata_taskfile
*tf
);
668 void (*exec_command
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
669 u8 (*check_status
)(struct ata_port
*ap
);
670 u8 (*check_altstatus
)(struct ata_port
*ap
);
671 void (*dev_select
)(struct ata_port
*ap
, unsigned int device
);
673 void (*phy_reset
) (struct ata_port
*ap
); /* obsolete */
674 int (*set_mode
) (struct ata_link
*link
, struct ata_device
**r_failed_dev
);
676 int (*cable_detect
) (struct ata_port
*ap
);
678 int (*check_atapi_dma
) (struct ata_queued_cmd
*qc
);
680 void (*bmdma_setup
) (struct ata_queued_cmd
*qc
);
681 void (*bmdma_start
) (struct ata_queued_cmd
*qc
);
683 void (*data_xfer
) (struct ata_device
*, unsigned char *, unsigned int, int);
685 int (*qc_defer
) (struct ata_queued_cmd
*qc
);
686 void (*qc_prep
) (struct ata_queued_cmd
*qc
);
687 unsigned int (*qc_issue
) (struct ata_queued_cmd
*qc
);
689 /* port multiplier */
690 void (*pmp_attach
) (struct ata_port
*ap
);
691 void (*pmp_detach
) (struct ata_port
*ap
);
693 /* Error handlers. ->error_handler overrides ->eng_timeout and
694 * indicates that new-style EH is in place.
696 void (*eng_timeout
) (struct ata_port
*ap
); /* obsolete */
698 void (*freeze
) (struct ata_port
*ap
);
699 void (*thaw
) (struct ata_port
*ap
);
700 void (*error_handler
) (struct ata_port
*ap
);
701 void (*post_internal_cmd
) (struct ata_queued_cmd
*qc
);
703 irq_handler_t irq_handler
;
704 void (*irq_clear
) (struct ata_port
*);
705 u8 (*irq_on
) (struct ata_port
*);
707 int (*scr_read
) (struct ata_port
*ap
, unsigned int sc_reg
, u32
*val
);
708 int (*scr_write
) (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
710 int (*port_suspend
) (struct ata_port
*ap
, pm_message_t mesg
);
711 int (*port_resume
) (struct ata_port
*ap
);
712 int (*enable_pm
) (struct ata_port
*ap
, enum link_pm policy
);
713 void (*disable_pm
) (struct ata_port
*ap
);
714 int (*port_start
) (struct ata_port
*ap
);
715 void (*port_stop
) (struct ata_port
*ap
);
717 void (*host_stop
) (struct ata_host
*host
);
719 void (*bmdma_stop
) (struct ata_queued_cmd
*qc
);
720 u8 (*bmdma_status
) (struct ata_port
*ap
);
723 struct ata_port_info
{
724 struct scsi_host_template
*sht
;
726 unsigned long link_flags
;
727 unsigned long pio_mask
;
728 unsigned long mwdma_mask
;
729 unsigned long udma_mask
;
730 const struct ata_port_operations
*port_ops
;
731 irq_handler_t irq_handler
;
736 unsigned short mode
; /* ATA mode */
737 unsigned short setup
; /* t1 */
738 unsigned short act8b
; /* t2 for 8-bit I/O */
739 unsigned short rec8b
; /* t2i for 8-bit I/O */
740 unsigned short cyc8b
; /* t0 for 8-bit I/O */
741 unsigned short active
; /* t2 or tD */
742 unsigned short recover
; /* t2i or tK */
743 unsigned short cycle
; /* t0 */
744 unsigned short udma
; /* t2CYCTYP/2 */
747 #define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
749 extern const unsigned long sata_deb_timing_normal
[];
750 extern const unsigned long sata_deb_timing_hotplug
[];
751 extern const unsigned long sata_deb_timing_long
[];
753 extern const struct ata_port_operations ata_dummy_port_ops
;
754 extern const struct ata_port_info ata_dummy_port_info
;
756 static inline const unsigned long *
757 sata_ehc_deb_timing(struct ata_eh_context
*ehc
)
759 if (ehc
->i
.flags
& ATA_EHI_HOTPLUGGED
)
760 return sata_deb_timing_hotplug
;
762 return sata_deb_timing_normal
;
765 static inline int ata_port_is_dummy(struct ata_port
*ap
)
767 return ap
->ops
== &ata_dummy_port_ops
;
770 extern void sata_print_link_status(struct ata_link
*link
);
771 extern void ata_port_probe(struct ata_port
*);
772 extern void __sata_phy_reset(struct ata_port
*ap
);
773 extern void sata_phy_reset(struct ata_port
*ap
);
774 extern void ata_bus_reset(struct ata_port
*ap
);
775 extern int sata_set_spd(struct ata_link
*link
);
776 extern int sata_link_debounce(struct ata_link
*link
,
777 const unsigned long *params
, unsigned long deadline
);
778 extern int sata_link_resume(struct ata_link
*link
, const unsigned long *params
,
779 unsigned long deadline
);
780 extern int ata_std_prereset(struct ata_link
*link
, unsigned long deadline
);
781 extern int ata_std_softreset(struct ata_link
*link
, unsigned int *classes
,
782 unsigned long deadline
);
783 extern int sata_link_hardreset(struct ata_link
*link
,
784 const unsigned long *timing
, unsigned long deadline
);
785 extern int sata_std_hardreset(struct ata_link
*link
, unsigned int *class,
786 unsigned long deadline
);
787 extern void ata_std_postreset(struct ata_link
*link
, unsigned int *classes
);
788 extern void ata_port_disable(struct ata_port
*);
789 extern void ata_std_ports(struct ata_ioports
*ioaddr
);
791 extern struct ata_host
*ata_host_alloc(struct device
*dev
, int max_ports
);
792 extern struct ata_host
*ata_host_alloc_pinfo(struct device
*dev
,
793 const struct ata_port_info
* const * ppi
, int n_ports
);
794 extern int ata_host_start(struct ata_host
*host
);
795 extern int ata_host_register(struct ata_host
*host
,
796 struct scsi_host_template
*sht
);
797 extern int ata_host_activate(struct ata_host
*host
, int irq
,
798 irq_handler_t irq_handler
, unsigned long irq_flags
,
799 struct scsi_host_template
*sht
);
800 extern void ata_host_detach(struct ata_host
*host
);
801 extern void ata_host_init(struct ata_host
*, struct device
*,
802 unsigned long, const struct ata_port_operations
*);
803 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
804 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
805 extern int ata_scsi_queuecmd(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*));
806 extern void ata_sas_port_destroy(struct ata_port
*);
807 extern struct ata_port
*ata_sas_port_alloc(struct ata_host
*,
808 struct ata_port_info
*, struct Scsi_Host
*);
809 extern int ata_sas_port_init(struct ata_port
*);
810 extern int ata_sas_port_start(struct ata_port
*ap
);
811 extern void ata_sas_port_stop(struct ata_port
*ap
);
812 extern int ata_sas_slave_configure(struct scsi_device
*, struct ata_port
*);
813 extern int ata_sas_queuecmd(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*),
814 struct ata_port
*ap
);
815 extern unsigned int ata_host_intr(struct ata_port
*ap
, struct ata_queued_cmd
*qc
);
816 extern int sata_scr_valid(struct ata_link
*link
);
817 extern int sata_scr_read(struct ata_link
*link
, int reg
, u32
*val
);
818 extern int sata_scr_write(struct ata_link
*link
, int reg
, u32 val
);
819 extern int sata_scr_write_flush(struct ata_link
*link
, int reg
, u32 val
);
820 extern int ata_link_online(struct ata_link
*link
);
821 extern int ata_link_offline(struct ata_link
*link
);
823 extern int ata_host_suspend(struct ata_host
*host
, pm_message_t mesg
);
824 extern void ata_host_resume(struct ata_host
*host
);
826 extern int ata_ratelimit(void);
827 extern int ata_busy_sleep(struct ata_port
*ap
,
828 unsigned long timeout_pat
, unsigned long timeout
);
829 extern void ata_wait_after_reset(struct ata_port
*ap
, unsigned long deadline
);
830 extern int ata_wait_ready(struct ata_port
*ap
, unsigned long deadline
);
831 extern void ata_port_queue_task(struct ata_port
*ap
, work_func_t fn
,
832 void *data
, unsigned long delay
);
833 extern u32
ata_wait_register(void __iomem
*reg
, u32 mask
, u32 val
,
834 unsigned long interval_msec
,
835 unsigned long timeout_msec
);
836 extern unsigned int ata_dev_try_classify(struct ata_device
*dev
, int present
,
840 * Default driver ops implementations
842 extern void ata_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
843 extern void ata_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
844 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
,
845 u8 pmp
, int is_cmd
, u8
*fis
);
846 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
847 extern void ata_noop_dev_select(struct ata_port
*ap
, unsigned int device
);
848 extern void ata_std_dev_select(struct ata_port
*ap
, unsigned int device
);
849 extern u8
ata_check_status(struct ata_port
*ap
);
850 extern u8
ata_altstatus(struct ata_port
*ap
);
851 extern void ata_exec_command(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
852 extern int ata_port_start(struct ata_port
*ap
);
853 extern int ata_sff_port_start(struct ata_port
*ap
);
854 extern irqreturn_t
ata_interrupt(int irq
, void *dev_instance
);
855 extern void ata_data_xfer(struct ata_device
*adev
, unsigned char *buf
,
856 unsigned int buflen
, int write_data
);
857 extern void ata_data_xfer_noirq(struct ata_device
*adev
, unsigned char *buf
,
858 unsigned int buflen
, int write_data
);
859 extern int ata_std_qc_defer(struct ata_queued_cmd
*qc
);
860 extern void ata_dumb_qc_prep(struct ata_queued_cmd
*qc
);
861 extern void ata_qc_prep(struct ata_queued_cmd
*qc
);
862 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
863 extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd
*qc
);
864 extern void ata_sg_init_one(struct ata_queued_cmd
*qc
, void *buf
,
865 unsigned int buflen
);
866 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
867 unsigned int n_elem
);
868 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
869 extern void ata_dev_disable(struct ata_device
*adev
);
870 extern void ata_id_string(const u16
*id
, unsigned char *s
,
871 unsigned int ofs
, unsigned int len
);
872 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
873 unsigned int ofs
, unsigned int len
);
874 extern void ata_id_to_dma_mode(struct ata_device
*dev
, u8 unknown
);
875 extern void ata_bmdma_setup(struct ata_queued_cmd
*qc
);
876 extern void ata_bmdma_start(struct ata_queued_cmd
*qc
);
877 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
878 extern u8
ata_bmdma_status(struct ata_port
*ap
);
879 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
880 extern void ata_bmdma_freeze(struct ata_port
*ap
);
881 extern void ata_bmdma_thaw(struct ata_port
*ap
);
882 extern void ata_bmdma_drive_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
883 ata_reset_fn_t softreset
,
884 ata_reset_fn_t hardreset
,
885 ata_postreset_fn_t postreset
);
886 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
887 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
888 extern int ata_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
889 u8 status
, int in_wq
);
890 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
891 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
,
892 void (*finish_qc
)(struct ata_queued_cmd
*));
893 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
,
894 void (*done
)(struct scsi_cmnd
*));
895 extern int ata_std_bios_param(struct scsi_device
*sdev
,
896 struct block_device
*bdev
,
897 sector_t capacity
, int geom
[]);
898 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
899 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
900 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
902 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
903 extern int ata_do_set_mode(struct ata_link
*link
, struct ata_device
**r_failed_dev
);
904 extern u8
ata_irq_on(struct ata_port
*ap
);
906 extern int ata_cable_40wire(struct ata_port
*ap
);
907 extern int ata_cable_80wire(struct ata_port
*ap
);
908 extern int ata_cable_sata(struct ata_port
*ap
);
909 extern int ata_cable_unknown(struct ata_port
*ap
);
915 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
916 extern int ata_timing_compute(struct ata_device
*, unsigned short,
917 struct ata_timing
*, int, int);
918 extern void ata_timing_merge(const struct ata_timing
*,
919 const struct ata_timing
*, struct ata_timing
*,
923 ATA_TIMING_SETUP
= (1 << 0),
924 ATA_TIMING_ACT8B
= (1 << 1),
925 ATA_TIMING_REC8B
= (1 << 2),
926 ATA_TIMING_CYC8B
= (1 << 3),
927 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
929 ATA_TIMING_ACTIVE
= (1 << 4),
930 ATA_TIMING_RECOVER
= (1 << 5),
931 ATA_TIMING_CYCLE
= (1 << 6),
932 ATA_TIMING_UDMA
= (1 << 7),
933 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
934 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
935 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
936 ATA_TIMING_CYCLE
| ATA_TIMING_UDMA
,
940 #ifdef CONFIG_ATA_ACPI
941 extern int ata_acpi_cbl_80wire(struct ata_port
*ap
);
942 int ata_acpi_stm(const struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
943 int ata_acpi_gtm(const struct ata_port
*ap
, struct ata_acpi_gtm
*stm
);
945 static inline int ata_acpi_cbl_80wire(struct ata_port
*ap
) { return 0; }
951 extern int ata_pci_init_one(struct pci_dev
*pdev
,
952 const struct ata_port_info
* const * ppi
);
953 extern void ata_pci_remove_one(struct pci_dev
*pdev
);
955 extern void ata_pci_device_do_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
956 extern int __must_check
ata_pci_device_do_resume(struct pci_dev
*pdev
);
957 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
958 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
960 extern int ata_pci_clear_simplex(struct pci_dev
*pdev
);
963 unsigned int reg
; /* PCI config register to read */
964 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
969 extern int ata_pci_init_sff_host(struct ata_host
*host
);
970 extern int ata_pci_init_bmdma(struct ata_host
*host
);
971 extern int ata_pci_prepare_sff_host(struct pci_dev
*pdev
,
972 const struct ata_port_info
* const * ppi
,
973 struct ata_host
**r_host
);
974 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
975 extern unsigned long ata_pci_default_filter(struct ata_device
*, unsigned long);
976 #endif /* CONFIG_PCI */
981 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd
*qc
);
982 extern int sata_pmp_std_prereset(struct ata_link
*link
, unsigned long deadline
);
983 extern int sata_pmp_std_hardreset(struct ata_link
*link
, unsigned int *class,
984 unsigned long deadline
);
985 extern void sata_pmp_std_postreset(struct ata_link
*link
, unsigned int *class);
986 extern void sata_pmp_do_eh(struct ata_port
*ap
,
987 ata_prereset_fn_t prereset
, ata_reset_fn_t softreset
,
988 ata_reset_fn_t hardreset
, ata_postreset_fn_t postreset
,
989 ata_prereset_fn_t pmp_prereset
, ata_reset_fn_t pmp_softreset
,
990 ata_reset_fn_t pmp_hardreset
, ata_postreset_fn_t pmp_postreset
);
995 extern void ata_eng_timeout(struct ata_port
*ap
);
997 extern void ata_port_schedule_eh(struct ata_port
*ap
);
998 extern int ata_link_abort(struct ata_link
*link
);
999 extern int ata_port_abort(struct ata_port
*ap
);
1000 extern int ata_port_freeze(struct ata_port
*ap
);
1001 extern int sata_async_notification(struct ata_port
*ap
);
1003 extern void ata_eh_freeze_port(struct ata_port
*ap
);
1004 extern void ata_eh_thaw_port(struct ata_port
*ap
);
1006 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
1007 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
1009 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
1010 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
1011 ata_postreset_fn_t postreset
);
1016 #define ata_port_printk(ap, lv, fmt, args...) \
1017 printk(lv"ata%u: "fmt, (ap)->print_id , ##args)
1019 #define ata_link_printk(link, lv, fmt, args...) do { \
1020 if ((link)->ap->nr_pmp_links) \
1021 printk(lv"ata%u.%02u: "fmt, (link)->ap->print_id, \
1022 (link)->pmp , ##args); \
1024 printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args); \
1027 #define ata_dev_printk(dev, lv, fmt, args...) \
1028 printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, \
1029 (dev)->link->pmp + (dev)->devno , ##args)
1032 * ata_eh_info helpers
1034 extern void __ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1035 __attribute__ ((format (printf
, 2, 3)));
1036 extern void ata_ehi_push_desc(struct ata_eh_info
*ehi
, const char *fmt
, ...)
1037 __attribute__ ((format (printf
, 2, 3)));
1038 extern void ata_ehi_clear_desc(struct ata_eh_info
*ehi
);
1040 static inline void ata_ehi_schedule_probe(struct ata_eh_info
*ehi
)
1042 ehi
->flags
|= ATA_EHI_RESUME_LINK
;
1043 ehi
->action
|= ATA_EH_SOFTRESET
;
1044 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
1047 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
1049 ata_ehi_schedule_probe(ehi
);
1050 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
1051 ehi
->action
|= ATA_EH_ENABLE_LINK
;
1052 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
1056 * port description helpers
1058 extern void ata_port_desc(struct ata_port
*ap
, const char *fmt
, ...)
1059 __attribute__ ((format (printf
, 2, 3)));
1061 extern void ata_port_pbar_desc(struct ata_port
*ap
, int bar
, ssize_t offset
,
1068 static inline struct scatterlist
*
1069 ata_qc_first_sg(struct ata_queued_cmd
*qc
)
1075 return &qc
->pad_sgent
;
1079 static inline struct scatterlist
*
1080 ata_qc_next_sg(struct scatterlist
*sg
, struct ata_queued_cmd
*qc
)
1082 if (sg
== &qc
->pad_sgent
)
1084 if (++qc
->n_iter
< qc
->n_elem
)
1087 return &qc
->pad_sgent
;
1091 #define ata_for_each_sg(sg, qc) \
1092 for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc))
1094 static inline unsigned int ata_tag_valid(unsigned int tag
)
1096 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
1099 static inline unsigned int ata_tag_internal(unsigned int tag
)
1101 return tag
== ATA_MAX_QUEUE
- 1;
1107 static inline unsigned int ata_class_enabled(unsigned int class)
1109 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
||
1110 class == ATA_DEV_PMP
|| class == ATA_DEV_SEMB
;
1113 static inline unsigned int ata_class_disabled(unsigned int class)
1115 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
||
1116 class == ATA_DEV_PMP_UNSUP
|| class == ATA_DEV_SEMB_UNSUP
;
1119 static inline unsigned int ata_class_absent(unsigned int class)
1121 return !ata_class_enabled(class) && !ata_class_disabled(class);
1124 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
1126 return ata_class_enabled(dev
->class);
1129 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
1131 return ata_class_disabled(dev
->class);
1134 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
1136 return ata_class_absent(dev
->class);
1142 static inline int ata_is_host_link(const struct ata_link
*link
)
1144 return link
== &link
->ap
->link
;
1147 static inline int ata_link_max_devices(const struct ata_link
*link
)
1149 if (ata_is_host_link(link
) && link
->ap
->flags
& ATA_FLAG_SLAVE_POSS
)
1154 static inline int ata_link_active(struct ata_link
*link
)
1156 return ata_tag_valid(link
->active_tag
) || link
->sactive
;
1159 static inline struct ata_link
*ata_port_first_link(struct ata_port
*ap
)
1161 if (ap
->nr_pmp_links
)
1162 return ap
->pmp_link
;
1166 static inline struct ata_link
*ata_port_next_link(struct ata_link
*link
)
1168 struct ata_port
*ap
= link
->ap
;
1170 if (link
== &ap
->link
) {
1171 if (!ap
->nr_pmp_links
)
1173 return ap
->pmp_link
;
1176 if (++link
- ap
->pmp_link
< ap
->nr_pmp_links
)
1181 #define __ata_port_for_each_link(lk, ap) \
1182 for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
1184 #define ata_port_for_each_link(link, ap) \
1185 for ((link) = ata_port_first_link(ap); (link); \
1186 (link) = ata_port_next_link(link))
1188 #define ata_link_for_each_dev(dev, link) \
1189 for ((dev) = (link)->device; \
1190 (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \
1193 #define ata_link_for_each_dev_reverse(dev, link) \
1194 for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
1195 (dev) >= (link)->device || ((dev) = NULL); (dev)--)
1197 static inline u8
ata_chk_status(struct ata_port
*ap
)
1199 return ap
->ops
->check_status(ap
);
1203 * ata_ncq_enabled - Test whether NCQ is enabled
1204 * @dev: ATA device to test for
1207 * spin_lock_irqsave(host lock)
1210 * 1 if NCQ is enabled for @dev, 0 otherwise.
1212 static inline int ata_ncq_enabled(struct ata_device
*dev
)
1214 return (dev
->flags
& (ATA_DFLAG_PIO
| ATA_DFLAG_NCQ_OFF
|
1215 ATA_DFLAG_NCQ
)) == ATA_DFLAG_NCQ
;
1219 * ata_pause - Flush writes and pause 400 nanoseconds.
1220 * @ap: Port to wait for.
1223 * Inherited from caller.
1226 static inline void ata_pause(struct ata_port
*ap
)
1234 * ata_busy_wait - Wait for a port status register
1235 * @ap: Port to wait for.
1236 * @bits: bits that must be clear
1237 * @max: number of 10uS waits to perform
1239 * Waits up to max*10 microseconds for the selected bits in the port's
1240 * status register to be cleared.
1241 * Returns final value of status register.
1244 * Inherited from caller.
1247 static inline u8
ata_busy_wait(struct ata_port
*ap
, unsigned int bits
,
1254 status
= ata_chk_status(ap
);
1256 } while (status
!= 0xff && (status
& bits
) && (max
> 0));
1263 * ata_wait_idle - Wait for a port to be idle.
1264 * @ap: Port to wait for.
1266 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1267 * Returns final value of status register.
1270 * Inherited from caller.
1273 static inline u8
ata_wait_idle(struct ata_port
*ap
)
1275 u8 status
= ata_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
1278 if (status
!= 0xff && (status
& (ATA_BUSY
| ATA_DRQ
)))
1279 ata_port_printk(ap
, KERN_DEBUG
, "abnormal Status 0x%X\n",
1286 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1288 qc
->tf
.ctl
|= ATA_NIEN
;
1291 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1294 if (likely(ata_tag_valid(tag
)))
1295 return &ap
->qcmd
[tag
];
1299 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1302 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1304 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1307 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1308 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1314 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1316 memset(tf
, 0, sizeof(*tf
));
1318 tf
->ctl
= dev
->link
->ap
->ctl
;
1319 if (dev
->devno
== 0)
1320 tf
->device
= ATA_DEVICE_OBS
;
1322 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1325 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1327 qc
->dma_dir
= DMA_NONE
;
1332 qc
->nbytes
= qc
->curbytes
= 0;
1337 qc
->sect_size
= ATA_SECT_SIZE
;
1339 ata_tf_init(qc
->dev
, &qc
->tf
);
1341 /* init result_tf such that it indicates normal completion */
1342 qc
->result_tf
.command
= ATA_DRDY
;
1343 qc
->result_tf
.feature
= 0;
1346 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1348 return ata_id_wcache_enabled(dev
->id
) ||
1349 ata_id_has_flush(dev
->id
) ||
1350 ata_id_has_flush_ext(dev
->id
);
1353 static inline unsigned int ac_err_mask(u8 status
)
1355 if (status
& (ATA_BUSY
| ATA_DRQ
))
1357 if (status
& (ATA_ERR
| ATA_DF
))
1362 static inline unsigned int __ac_err_mask(u8 status
)
1364 unsigned int mask
= ac_err_mask(status
);
1366 return AC_ERR_OTHER
;
1370 static inline int ata_pad_alloc(struct ata_port
*ap
, struct device
*dev
)
1373 ap
->pad
= dmam_alloc_coherent(dev
, ATA_DMA_PAD_BUF_SZ
,
1374 &ap
->pad_dma
, GFP_KERNEL
);
1375 return (ap
->pad
== NULL
) ? -ENOMEM
: 0;
1378 static inline void ata_pad_free(struct ata_port
*ap
, struct device
*dev
)
1380 dmam_free_coherent(dev
, ATA_DMA_PAD_BUF_SZ
, ap
->pad
, ap
->pad_dma
);
1383 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1385 return *(struct ata_port
**)&host
->hostdata
[0];
1388 #endif /* __LINUX_LIBATA_H__ */