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/pci.h>
32 #include <linux/dma-mapping.h>
33 #include <asm/scatterlist.h>
35 #include <linux/ata.h>
36 #include <linux/workqueue.h>
37 #include <scsi/scsi_host.h>
40 * compile-time options: to be removed as soon as all the drivers are
41 * converted to the new debugging mechanism
43 #undef ATA_DEBUG /* debugging output */
44 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
45 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
46 #undef ATA_NDEBUG /* define to disable quick runtime checks */
47 #undef ATA_ENABLE_PATA /* define to enable PATA support in some
48 * low-level drivers */
51 /* note: prints function name for you */
53 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
54 #ifdef ATA_VERBOSE_DEBUG
55 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
57 #define VPRINTK(fmt, args...)
58 #endif /* ATA_VERBOSE_DEBUG */
60 #define DPRINTK(fmt, args...)
61 #define VPRINTK(fmt, args...)
62 #endif /* ATA_DEBUG */
64 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
66 /* NEW: debug levels */
67 #define HAVE_LIBATA_MSG 1
71 ATA_MSG_INFO
= 0x0002,
72 ATA_MSG_PROBE
= 0x0004,
73 ATA_MSG_WARN
= 0x0008,
74 ATA_MSG_MALLOC
= 0x0010,
76 ATA_MSG_INTR
= 0x0040,
80 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
81 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
82 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
83 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
84 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
85 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
86 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
87 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
89 static inline u32
ata_msg_init(int dval
, int default_msg_enable_bits
)
91 if (dval
< 0 || dval
>= (sizeof(u32
) * 8))
92 return default_msg_enable_bits
; /* should be 0x1 - only driver info msgs */
95 return (1 << dval
) - 1;
98 /* defines only for the constants which don't work well as enums */
99 #define ATA_TAG_POISON 0xfafbfcfdU
101 /* move to PCI layer? */
102 static inline struct device
*pci_dev_to_dev(struct pci_dev
*pdev
)
108 /* various global constants */
109 LIBATA_MAX_PRD
= ATA_MAX_PRD
/ 2,
112 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
114 ATA_TAG_INTERNAL
= ATA_MAX_QUEUE
- 1,
115 ATA_MAX_SECTORS
= 200, /* FIXME */
116 ATA_MAX_SECTORS_LBA48
= 65535,
118 ATA_DEF_BUSY_WAIT
= 10000,
119 ATA_SHORT_PAUSE
= (HZ
>> 6) + 1,
121 ATA_SHT_EMULATED
= 1,
122 ATA_SHT_CMD_PER_LUN
= 1,
123 ATA_SHT_THIS_ID
= -1,
124 ATA_SHT_USE_CLUSTERING
= 1,
126 /* struct ata_device stuff */
127 ATA_DFLAG_LBA
= (1 << 0), /* device supports LBA */
128 ATA_DFLAG_LBA48
= (1 << 1), /* device supports LBA48 */
129 ATA_DFLAG_CDB_INTR
= (1 << 2), /* device asserts INTRQ when ready for CDB */
130 ATA_DFLAG_NCQ
= (1 << 3), /* device supports NCQ */
131 ATA_DFLAG_CFG_MASK
= (1 << 8) - 1,
133 ATA_DFLAG_PIO
= (1 << 8), /* device currently in PIO mode */
134 ATA_DFLAG_INIT_MASK
= (1 << 16) - 1,
136 ATA_DFLAG_DETACH
= (1 << 16),
137 ATA_DFLAG_DETACHED
= (1 << 17),
139 ATA_DEV_UNKNOWN
= 0, /* unknown device */
140 ATA_DEV_ATA
= 1, /* ATA device */
141 ATA_DEV_ATA_UNSUP
= 2, /* ATA device (unsupported) */
142 ATA_DEV_ATAPI
= 3, /* ATAPI device */
143 ATA_DEV_ATAPI_UNSUP
= 4, /* ATAPI device (unsupported) */
144 ATA_DEV_NONE
= 5, /* no device */
146 /* struct ata_port flags */
147 ATA_FLAG_SLAVE_POSS
= (1 << 0), /* host supports slave dev */
148 /* (doesn't imply presence) */
149 ATA_FLAG_SATA
= (1 << 1),
150 ATA_FLAG_NO_LEGACY
= (1 << 2), /* no legacy mode check */
151 ATA_FLAG_MMIO
= (1 << 3), /* use MMIO, not PIO */
152 ATA_FLAG_SRST
= (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
153 ATA_FLAG_SATA_RESET
= (1 << 5), /* (obsolete) use COMRESET */
154 ATA_FLAG_NO_ATAPI
= (1 << 6), /* No ATAPI support */
155 ATA_FLAG_PIO_DMA
= (1 << 7), /* PIO cmds via DMA */
156 ATA_FLAG_PIO_LBA48
= (1 << 8), /* Host DMA engine is LBA28 only */
157 ATA_FLAG_PIO_POLLING
= (1 << 9), /* use polling PIO if LLD
158 * doesn't handle PIO interrupts */
159 ATA_FLAG_NCQ
= (1 << 10), /* host supports NCQ */
160 ATA_FLAG_HRST_TO_RESUME
= (1 << 11), /* hardreset to resume phy */
161 ATA_FLAG_SKIP_D2H_BSY
= (1 << 12), /* can't wait for the first D2H
162 * Register FIS clearing BSY */
164 ATA_FLAG_DEBUGMSG
= (1 << 13),
165 ATA_FLAG_FLUSH_PORT_TASK
= (1 << 14), /* flush port task */
167 ATA_FLAG_EH_PENDING
= (1 << 15), /* EH pending */
168 ATA_FLAG_EH_IN_PROGRESS
= (1 << 16), /* EH in progress */
169 ATA_FLAG_FROZEN
= (1 << 17), /* port is frozen */
170 ATA_FLAG_RECOVERED
= (1 << 18), /* recovery action performed */
171 ATA_FLAG_LOADING
= (1 << 19), /* boot/loading probe */
172 ATA_FLAG_UNLOADING
= (1 << 20), /* module is unloading */
173 ATA_FLAG_SCSI_HOTPLUG
= (1 << 21), /* SCSI hotplug scheduled */
175 ATA_FLAG_DISABLED
= (1 << 22), /* port is disabled, ignore it */
176 ATA_FLAG_SUSPENDED
= (1 << 23), /* port is suspended (power) */
178 /* bits 24:31 of ap->flags are reserved for LLDD specific flags */
180 /* struct ata_queued_cmd flags */
181 ATA_QCFLAG_ACTIVE
= (1 << 0), /* cmd not yet ack'd to scsi lyer */
182 ATA_QCFLAG_SG
= (1 << 1), /* have s/g table? */
183 ATA_QCFLAG_SINGLE
= (1 << 2), /* no s/g, just a single buffer */
184 ATA_QCFLAG_DMAMAP
= ATA_QCFLAG_SG
| ATA_QCFLAG_SINGLE
,
185 ATA_QCFLAG_IO
= (1 << 3), /* standard IO command */
186 ATA_QCFLAG_RESULT_TF
= (1 << 4), /* result TF requested */
188 ATA_QCFLAG_FAILED
= (1 << 16), /* cmd failed and is owned by EH */
189 ATA_QCFLAG_SENSE_VALID
= (1 << 17), /* sense data valid */
190 ATA_QCFLAG_EH_SCHEDULED
= (1 << 18), /* EH scheduled (obsolete) */
193 ATA_HOST_SIMPLEX
= (1 << 0), /* Host is simplex, one DMA channel per host_set only */
195 /* various lengths of time */
196 ATA_TMOUT_BOOT
= 30 * HZ
, /* heuristic */
197 ATA_TMOUT_BOOT_QUICK
= 7 * HZ
, /* heuristic */
198 ATA_TMOUT_INTERNAL
= 30 * HZ
,
199 ATA_TMOUT_INTERNAL_QUICK
= 5 * HZ
,
213 /* SATA port states */
218 /* encoding various smaller bitmaps into a single
219 * unsigned int bitmap
226 ATA_SHIFT_MWDMA
= ATA_SHIFT_PIO
+ ATA_BITS_PIO
,
227 ATA_SHIFT_UDMA
= ATA_SHIFT_MWDMA
+ ATA_BITS_MWDMA
,
229 ATA_MASK_PIO
= ((1 << ATA_BITS_PIO
) - 1) << ATA_SHIFT_PIO
,
230 ATA_MASK_MWDMA
= ((1 << ATA_BITS_MWDMA
) - 1) << ATA_SHIFT_MWDMA
,
231 ATA_MASK_UDMA
= ((1 << ATA_BITS_UDMA
) - 1) << ATA_SHIFT_UDMA
,
233 /* size of buffer to pad xfers ending on unaligned boundaries */
235 ATA_DMA_PAD_BUF_SZ
= ATA_DMA_PAD_SZ
* ATA_MAX_QUEUE
,
237 /* masks for port functions */
238 ATA_PORT_PRIMARY
= (1 << 0),
239 ATA_PORT_SECONDARY
= (1 << 1),
244 /* desc_len for ata_eh_info and context */
245 ATA_EH_DESC_LEN
= 80,
247 /* reset / recovery action types */
248 ATA_EH_REVALIDATE
= (1 << 0),
249 ATA_EH_SOFTRESET
= (1 << 1),
250 ATA_EH_HARDRESET
= (1 << 2),
252 ATA_EH_RESET_MASK
= ATA_EH_SOFTRESET
| ATA_EH_HARDRESET
,
253 ATA_EH_PERDEV_MASK
= ATA_EH_REVALIDATE
,
255 /* ata_eh_info->flags */
256 ATA_EHI_HOTPLUGGED
= (1 << 0), /* could have been hotplugged */
258 ATA_EHI_DID_RESET
= (1 << 16), /* already reset this port */
260 /* max repeat if error condition is still set after ->error_handler */
261 ATA_EH_MAX_REPEAT
= 5,
263 /* how hard are we gonna try to probe/recover devices */
264 ATA_PROBE_MAX_TRIES
= 3,
265 ATA_EH_RESET_TRIES
= 3,
266 ATA_EH_DEV_TRIES
= 3,
268 /* Drive spinup time (time from power-on to the first D2H FIS)
269 * in msecs - 8s currently. Failing to get ready in this time
270 * isn't critical. It will result in reset failure for
271 * controllers which can't wait for the first D2H FIS. libata
272 * will retry, so it just has to be long enough to spin up
275 ATA_SPINUP_WAIT
= 8000,
278 enum hsm_task_states
{
279 HSM_ST_UNKNOWN
, /* state unknown */
280 HSM_ST_IDLE
, /* no command on going */
281 HSM_ST
, /* (waiting the device to) transfer data */
282 HSM_ST_LAST
, /* (waiting the device to) complete command */
283 HSM_ST_ERR
, /* error */
284 HSM_ST_FIRST
, /* (waiting the device to)
285 write CDB or first data block */
288 enum ata_completion_errors
{
289 AC_ERR_DEV
= (1 << 0), /* device reported error */
290 AC_ERR_HSM
= (1 << 1), /* host state machine violation */
291 AC_ERR_TIMEOUT
= (1 << 2), /* timeout */
292 AC_ERR_MEDIA
= (1 << 3), /* media error */
293 AC_ERR_ATA_BUS
= (1 << 4), /* ATA bus error */
294 AC_ERR_HOST_BUS
= (1 << 5), /* host bus error */
295 AC_ERR_SYSTEM
= (1 << 6), /* system error */
296 AC_ERR_INVALID
= (1 << 7), /* invalid argument */
297 AC_ERR_OTHER
= (1 << 8), /* unknown */
300 /* forward declarations */
302 struct ata_port_operations
;
304 struct ata_queued_cmd
;
307 typedef void (*ata_qc_cb_t
) (struct ata_queued_cmd
*qc
);
308 typedef int (*ata_prereset_fn_t
)(struct ata_port
*ap
);
309 typedef int (*ata_reset_fn_t
)(struct ata_port
*ap
, unsigned int *classes
);
310 typedef void (*ata_postreset_fn_t
)(struct ata_port
*ap
, unsigned int *classes
);
313 unsigned long cmd_addr
;
314 unsigned long data_addr
;
315 unsigned long error_addr
;
316 unsigned long feature_addr
;
317 unsigned long nsect_addr
;
318 unsigned long lbal_addr
;
319 unsigned long lbam_addr
;
320 unsigned long lbah_addr
;
321 unsigned long device_addr
;
322 unsigned long status_addr
;
323 unsigned long command_addr
;
324 unsigned long altstatus_addr
;
325 unsigned long ctl_addr
;
326 unsigned long bmdma_addr
;
327 unsigned long scr_addr
;
330 struct ata_probe_ent
{
331 struct list_head node
;
333 const struct ata_port_operations
*port_ops
;
334 struct scsi_host_template
*sht
;
335 struct ata_ioports port
[ATA_MAX_PORTS
];
336 unsigned int n_ports
;
337 unsigned int hard_port_no
;
338 unsigned int pio_mask
;
339 unsigned int mwdma_mask
;
340 unsigned int udma_mask
;
341 unsigned int legacy_mode
;
343 unsigned int irq_flags
;
344 unsigned long host_flags
;
345 unsigned long host_set_flags
;
346 void __iomem
*mmio_base
;
350 struct ata_host_set
{
354 void __iomem
*mmio_base
;
355 unsigned int n_ports
;
357 const struct ata_port_operations
*ops
;
359 int simplex_claimed
; /* Keep seperate in case we
360 ever need to do this locked */
361 struct ata_host_set
*next
; /* for legacy mode */
362 struct ata_port
*ports
[0];
365 struct ata_queued_cmd
{
367 struct ata_device
*dev
;
369 struct scsi_cmnd
*scsicmd
;
370 void (*scsidone
)(struct scsi_cmnd
*);
372 struct ata_taskfile tf
;
373 u8 cdb
[ATAPI_CDB_LEN
];
375 unsigned long flags
; /* ATA_QCFLAG_xxx */
378 unsigned int orig_n_elem
;
382 unsigned int pad_len
;
385 unsigned int cursect
;
388 unsigned int curbytes
;
391 unsigned int cursg_ofs
;
393 struct scatterlist sgent
;
394 struct scatterlist pad_sgent
;
397 /* DO NOT iterate over __sg manually, use ata_for_each_sg() */
398 struct scatterlist
*__sg
;
400 unsigned int err_mask
;
401 struct ata_taskfile result_tf
;
402 ata_qc_cb_t complete_fn
;
407 struct ata_host_stats
{
408 unsigned long unhandled_irq
;
409 unsigned long idle_irq
;
410 unsigned long rw_reqbuf
;
413 struct ata_ering_entry
{
415 unsigned int err_mask
;
421 struct ata_ering_entry ring
[ATA_ERING_SIZE
];
426 unsigned int devno
; /* 0 or 1 */
427 unsigned long flags
; /* ATA_DFLAG_xxx */
428 struct scsi_device
*sdev
; /* attached SCSI device */
429 /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
430 u64 n_sectors
; /* size of device, if ATA */
431 unsigned int class; /* ATA_DEV_xxx */
432 u16 id
[ATA_ID_WORDS
]; /* IDENTIFY xxx DEVICE data */
436 unsigned int xfer_shift
; /* ATA_SHIFT_xxx */
438 unsigned int multi_count
; /* sectors count for
439 READ/WRITE MULTIPLE */
440 unsigned int max_sectors
; /* per-device max sectors */
441 unsigned int cdb_len
;
443 /* per-dev xfer mask */
444 unsigned int pio_mask
;
445 unsigned int mwdma_mask
;
446 unsigned int udma_mask
;
448 /* for CHS addressing */
449 u16 cylinders
; /* Number of cylinders */
450 u16 heads
; /* Number of heads */
451 u16 sectors
; /* Number of sectors per track */
454 struct ata_ering ering
;
457 /* Offset into struct ata_device. Fields above it are maintained
458 * acress device init. Fields below are zeroed.
460 #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors)
463 struct ata_device
*dev
; /* offending device */
464 u32 serror
; /* SError from LLDD */
465 unsigned int err_mask
; /* port-wide err_mask */
466 unsigned int action
; /* ATA_EH_* action mask */
467 unsigned int dev_action
[ATA_MAX_DEVICES
]; /* dev EH action */
468 unsigned int flags
; /* ATA_EHI_* flags */
470 unsigned long hotplug_timestamp
;
471 unsigned int probe_mask
;
473 char desc
[ATA_EH_DESC_LEN
];
477 struct ata_eh_context
{
478 struct ata_eh_info i
;
479 int tries
[ATA_MAX_DEVICES
];
480 unsigned int classes
[ATA_MAX_DEVICES
];
481 unsigned int did_probe_mask
;
485 struct Scsi_Host
*host
; /* our co-allocated scsi host */
486 const struct ata_port_operations
*ops
;
488 unsigned long flags
; /* ATA_FLAG_xxx */
489 unsigned int id
; /* unique id req'd by scsi midlyr */
490 unsigned int port_no
; /* unique port #; from zero */
491 unsigned int hard_port_no
; /* hardware port #; from zero */
493 struct ata_prd
*prd
; /* our SG list */
494 dma_addr_t prd_dma
; /* and its DMA mapping */
496 void *pad
; /* array of DMA pad buffers */
499 struct ata_ioports ioaddr
; /* ATA cmd/ctl/dma register blocks */
501 u8 ctl
; /* cache of ATA control register */
502 u8 last_ctl
; /* Cache last written value */
503 unsigned int pio_mask
;
504 unsigned int mwdma_mask
;
505 unsigned int udma_mask
;
506 unsigned int cbl
; /* cable type; ATA_CBL_xxx */
507 unsigned int hw_sata_spd_limit
;
508 unsigned int sata_spd_limit
; /* SATA PHY speed limit */
510 /* record runtime error info, protected by host_set lock */
511 struct ata_eh_info eh_info
;
512 /* EH context owned by EH */
513 struct ata_eh_context eh_context
;
515 struct ata_device device
[ATA_MAX_DEVICES
];
517 struct ata_queued_cmd qcmd
[ATA_MAX_QUEUE
];
518 unsigned long qc_allocated
;
519 unsigned int qc_active
;
521 unsigned int active_tag
;
524 struct ata_host_stats stats
;
525 struct ata_host_set
*host_set
;
528 struct work_struct port_task
;
529 struct work_struct hotplug_task
;
530 struct work_struct scsi_rescan_task
;
532 unsigned int hsm_task_state
;
535 struct list_head eh_done_q
;
536 wait_queue_head_t eh_wait_q
;
540 u8 sector_buf
[ATA_SECT_SIZE
]; /* owned by EH */
543 struct ata_port_operations
{
544 void (*port_disable
) (struct ata_port
*);
546 void (*dev_config
) (struct ata_port
*, struct ata_device
*);
548 void (*set_piomode
) (struct ata_port
*, struct ata_device
*);
549 void (*set_dmamode
) (struct ata_port
*, struct ata_device
*);
550 unsigned long (*mode_filter
) (const struct ata_port
*, struct ata_device
*, unsigned long);
552 void (*tf_load
) (struct ata_port
*ap
, const struct ata_taskfile
*tf
);
553 void (*tf_read
) (struct ata_port
*ap
, struct ata_taskfile
*tf
);
555 void (*exec_command
)(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
556 u8 (*check_status
)(struct ata_port
*ap
);
557 u8 (*check_altstatus
)(struct ata_port
*ap
);
558 void (*dev_select
)(struct ata_port
*ap
, unsigned int device
);
560 void (*phy_reset
) (struct ata_port
*ap
); /* obsolete */
561 void (*set_mode
) (struct ata_port
*ap
);
563 void (*post_set_mode
) (struct ata_port
*ap
);
565 int (*check_atapi_dma
) (struct ata_queued_cmd
*qc
);
567 void (*bmdma_setup
) (struct ata_queued_cmd
*qc
);
568 void (*bmdma_start
) (struct ata_queued_cmd
*qc
);
570 void (*data_xfer
) (struct ata_device
*, unsigned char *, unsigned int, int);
572 void (*qc_prep
) (struct ata_queued_cmd
*qc
);
573 unsigned int (*qc_issue
) (struct ata_queued_cmd
*qc
);
575 /* Error handlers. ->error_handler overrides ->eng_timeout and
576 * indicates that new-style EH is in place.
578 void (*eng_timeout
) (struct ata_port
*ap
); /* obsolete */
580 void (*freeze
) (struct ata_port
*ap
);
581 void (*thaw
) (struct ata_port
*ap
);
582 void (*error_handler
) (struct ata_port
*ap
);
583 void (*post_internal_cmd
) (struct ata_queued_cmd
*qc
);
585 irqreturn_t (*irq_handler
)(int, void *, struct pt_regs
*);
586 void (*irq_clear
) (struct ata_port
*);
588 u32 (*scr_read
) (struct ata_port
*ap
, unsigned int sc_reg
);
589 void (*scr_write
) (struct ata_port
*ap
, unsigned int sc_reg
,
592 int (*port_start
) (struct ata_port
*ap
);
593 void (*port_stop
) (struct ata_port
*ap
);
595 void (*host_stop
) (struct ata_host_set
*host_set
);
597 void (*bmdma_stop
) (struct ata_queued_cmd
*qc
);
598 u8 (*bmdma_status
) (struct ata_port
*ap
);
601 struct ata_port_info
{
602 struct scsi_host_template
*sht
;
603 unsigned long host_flags
;
604 unsigned long pio_mask
;
605 unsigned long mwdma_mask
;
606 unsigned long udma_mask
;
607 const struct ata_port_operations
*port_ops
;
612 unsigned short mode
; /* ATA mode */
613 unsigned short setup
; /* t1 */
614 unsigned short act8b
; /* t2 for 8-bit I/O */
615 unsigned short rec8b
; /* t2i for 8-bit I/O */
616 unsigned short cyc8b
; /* t0 for 8-bit I/O */
617 unsigned short active
; /* t2 or tD */
618 unsigned short recover
; /* t2i or tK */
619 unsigned short cycle
; /* t0 */
620 unsigned short udma
; /* t2CYCTYP/2 */
623 #define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
625 extern const unsigned long sata_deb_timing_boot
[];
626 extern const unsigned long sata_deb_timing_eh
[];
627 extern const unsigned long sata_deb_timing_before_fsrst
[];
629 extern void ata_port_probe(struct ata_port
*);
630 extern void __sata_phy_reset(struct ata_port
*ap
);
631 extern void sata_phy_reset(struct ata_port
*ap
);
632 extern void ata_bus_reset(struct ata_port
*ap
);
633 extern int sata_set_spd(struct ata_port
*ap
);
634 extern int sata_phy_debounce(struct ata_port
*ap
, const unsigned long *param
);
635 extern int sata_phy_resume(struct ata_port
*ap
, const unsigned long *param
);
636 extern int ata_std_prereset(struct ata_port
*ap
);
637 extern int ata_std_softreset(struct ata_port
*ap
, unsigned int *classes
);
638 extern int sata_std_hardreset(struct ata_port
*ap
, unsigned int *class);
639 extern void ata_std_postreset(struct ata_port
*ap
, unsigned int *classes
);
640 extern int ata_dev_revalidate(struct ata_device
*dev
, int post_reset
);
641 extern void ata_port_disable(struct ata_port
*);
642 extern void ata_std_ports(struct ata_ioports
*ioaddr
);
644 extern int ata_pci_init_one (struct pci_dev
*pdev
, struct ata_port_info
**port_info
,
645 unsigned int n_ports
);
646 extern void ata_pci_remove_one (struct pci_dev
*pdev
);
647 extern int ata_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t state
);
648 extern int ata_pci_device_resume(struct pci_dev
*pdev
);
649 extern int ata_pci_clear_simplex(struct pci_dev
*pdev
);
650 #endif /* CONFIG_PCI */
651 extern int ata_device_add(const struct ata_probe_ent
*ent
);
652 extern void ata_port_detach(struct ata_port
*ap
);
653 extern void ata_host_set_remove(struct ata_host_set
*host_set
);
654 extern int ata_scsi_detect(struct scsi_host_template
*sht
);
655 extern int ata_scsi_ioctl(struct scsi_device
*dev
, int cmd
, void __user
*arg
);
656 extern int ata_scsi_queuecmd(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*));
657 extern int ata_scsi_release(struct Scsi_Host
*host
);
658 extern unsigned int ata_host_intr(struct ata_port
*ap
, struct ata_queued_cmd
*qc
);
659 extern int sata_scr_valid(struct ata_port
*ap
);
660 extern int sata_scr_read(struct ata_port
*ap
, int reg
, u32
*val
);
661 extern int sata_scr_write(struct ata_port
*ap
, int reg
, u32 val
);
662 extern int sata_scr_write_flush(struct ata_port
*ap
, int reg
, u32 val
);
663 extern int ata_port_online(struct ata_port
*ap
);
664 extern int ata_port_offline(struct ata_port
*ap
);
665 extern int ata_scsi_device_resume(struct scsi_device
*);
666 extern int ata_scsi_device_suspend(struct scsi_device
*, pm_message_t state
);
667 extern int ata_device_resume(struct ata_device
*);
668 extern int ata_device_suspend(struct ata_device
*, pm_message_t state
);
669 extern int ata_ratelimit(void);
670 extern unsigned int ata_busy_sleep(struct ata_port
*ap
,
671 unsigned long timeout_pat
,
672 unsigned long timeout
);
673 extern void ata_port_queue_task(struct ata_port
*ap
, void (*fn
)(void *),
674 void *data
, unsigned long delay
);
675 extern u32
ata_wait_register(void __iomem
*reg
, u32 mask
, u32 val
,
676 unsigned long interval_msec
,
677 unsigned long timeout_msec
);
680 * Default driver ops implementations
682 extern void ata_tf_load(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
683 extern void ata_tf_read(struct ata_port
*ap
, struct ata_taskfile
*tf
);
684 extern void ata_tf_to_fis(const struct ata_taskfile
*tf
, u8
*fis
, u8 pmp
);
685 extern void ata_tf_from_fis(const u8
*fis
, struct ata_taskfile
*tf
);
686 extern void ata_noop_dev_select (struct ata_port
*ap
, unsigned int device
);
687 extern void ata_std_dev_select (struct ata_port
*ap
, unsigned int device
);
688 extern u8
ata_check_status(struct ata_port
*ap
);
689 extern u8
ata_altstatus(struct ata_port
*ap
);
690 extern void ata_exec_command(struct ata_port
*ap
, const struct ata_taskfile
*tf
);
691 extern int ata_port_start (struct ata_port
*ap
);
692 extern void ata_port_stop (struct ata_port
*ap
);
693 extern void ata_host_stop (struct ata_host_set
*host_set
);
694 extern irqreturn_t
ata_interrupt (int irq
, void *dev_instance
, struct pt_regs
*regs
);
695 extern void ata_mmio_data_xfer(struct ata_device
*adev
, unsigned char *buf
,
696 unsigned int buflen
, int write_data
);
697 extern void ata_pio_data_xfer(struct ata_device
*adev
, unsigned char *buf
,
698 unsigned int buflen
, int write_data
);
699 extern void ata_pio_data_xfer_noirq(struct ata_device
*adev
, unsigned char *buf
,
700 unsigned int buflen
, int write_data
);
701 extern void ata_qc_prep(struct ata_queued_cmd
*qc
);
702 extern void ata_noop_qc_prep(struct ata_queued_cmd
*qc
);
703 extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd
*qc
);
704 extern void ata_sg_init_one(struct ata_queued_cmd
*qc
, void *buf
,
705 unsigned int buflen
);
706 extern void ata_sg_init(struct ata_queued_cmd
*qc
, struct scatterlist
*sg
,
707 unsigned int n_elem
);
708 extern unsigned int ata_dev_classify(const struct ata_taskfile
*tf
);
709 extern void ata_id_string(const u16
*id
, unsigned char *s
,
710 unsigned int ofs
, unsigned int len
);
711 extern void ata_id_c_string(const u16
*id
, unsigned char *s
,
712 unsigned int ofs
, unsigned int len
);
713 extern void ata_bmdma_setup (struct ata_queued_cmd
*qc
);
714 extern void ata_bmdma_start (struct ata_queued_cmd
*qc
);
715 extern void ata_bmdma_stop(struct ata_queued_cmd
*qc
);
716 extern u8
ata_bmdma_status(struct ata_port
*ap
);
717 extern void ata_bmdma_irq_clear(struct ata_port
*ap
);
718 extern void ata_bmdma_freeze(struct ata_port
*ap
);
719 extern void ata_bmdma_thaw(struct ata_port
*ap
);
720 extern void ata_bmdma_drive_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
721 ata_reset_fn_t softreset
,
722 ata_reset_fn_t hardreset
,
723 ata_postreset_fn_t postreset
);
724 extern void ata_bmdma_error_handler(struct ata_port
*ap
);
725 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd
*qc
);
726 extern int ata_hsm_move(struct ata_port
*ap
, struct ata_queued_cmd
*qc
,
727 u8 status
, int in_wq
);
728 extern void ata_qc_complete(struct ata_queued_cmd
*qc
);
729 extern int ata_qc_complete_multiple(struct ata_port
*ap
, u32 qc_active
,
730 void (*finish_qc
)(struct ata_queued_cmd
*));
731 extern void ata_scsi_simulate(struct ata_device
*dev
, struct scsi_cmnd
*cmd
,
732 void (*done
)(struct scsi_cmnd
*));
733 extern int ata_std_bios_param(struct scsi_device
*sdev
,
734 struct block_device
*bdev
,
735 sector_t capacity
, int geom
[]);
736 extern int ata_scsi_slave_config(struct scsi_device
*sdev
);
737 extern void ata_scsi_slave_destroy(struct scsi_device
*sdev
);
738 extern int ata_scsi_change_queue_depth(struct scsi_device
*sdev
,
740 extern struct ata_device
*ata_dev_pair(struct ata_device
*adev
);
746 extern unsigned int ata_pio_need_iordy(const struct ata_device
*);
747 extern int ata_timing_compute(struct ata_device
*, unsigned short,
748 struct ata_timing
*, int, int);
749 extern void ata_timing_merge(const struct ata_timing
*,
750 const struct ata_timing
*, struct ata_timing
*,
754 ATA_TIMING_SETUP
= (1 << 0),
755 ATA_TIMING_ACT8B
= (1 << 1),
756 ATA_TIMING_REC8B
= (1 << 2),
757 ATA_TIMING_CYC8B
= (1 << 3),
758 ATA_TIMING_8BIT
= ATA_TIMING_ACT8B
| ATA_TIMING_REC8B
|
760 ATA_TIMING_ACTIVE
= (1 << 4),
761 ATA_TIMING_RECOVER
= (1 << 5),
762 ATA_TIMING_CYCLE
= (1 << 6),
763 ATA_TIMING_UDMA
= (1 << 7),
764 ATA_TIMING_ALL
= ATA_TIMING_SETUP
| ATA_TIMING_ACT8B
|
765 ATA_TIMING_REC8B
| ATA_TIMING_CYC8B
|
766 ATA_TIMING_ACTIVE
| ATA_TIMING_RECOVER
|
767 ATA_TIMING_CYCLE
| ATA_TIMING_UDMA
,
773 unsigned int reg
; /* PCI config register to read */
774 unsigned int width
; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
779 extern void ata_pci_host_stop (struct ata_host_set
*host_set
);
780 extern struct ata_probe_ent
*
781 ata_pci_init_native_mode(struct pci_dev
*pdev
, struct ata_port_info
**port
, int portmask
);
782 extern int pci_test_config_bits(struct pci_dev
*pdev
, const struct pci_bits
*bits
);
783 extern unsigned long ata_pci_default_filter(const struct ata_port
*, struct ata_device
*, unsigned long);
784 #endif /* CONFIG_PCI */
789 extern void ata_eng_timeout(struct ata_port
*ap
);
791 extern void ata_port_schedule_eh(struct ata_port
*ap
);
792 extern int ata_port_abort(struct ata_port
*ap
);
793 extern int ata_port_freeze(struct ata_port
*ap
);
795 extern void ata_eh_freeze_port(struct ata_port
*ap
);
796 extern void ata_eh_thaw_port(struct ata_port
*ap
);
798 extern void ata_eh_qc_complete(struct ata_queued_cmd
*qc
);
799 extern void ata_eh_qc_retry(struct ata_queued_cmd
*qc
);
801 extern void ata_do_eh(struct ata_port
*ap
, ata_prereset_fn_t prereset
,
802 ata_reset_fn_t softreset
, ata_reset_fn_t hardreset
,
803 ata_postreset_fn_t postreset
);
808 #define ata_port_printk(ap, lv, fmt, args...) \
809 printk(lv"ata%u: "fmt, (ap)->id , ##args)
811 #define ata_dev_printk(dev, lv, fmt, args...) \
812 printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args)
815 * ata_eh_info helpers
817 #define ata_ehi_push_desc(ehi, fmt, args...) do { \
818 (ehi)->desc_len += scnprintf((ehi)->desc + (ehi)->desc_len, \
819 ATA_EH_DESC_LEN - (ehi)->desc_len, \
823 #define ata_ehi_clear_desc(ehi) do { \
824 (ehi)->desc[0] = '\0'; \
825 (ehi)->desc_len = 0; \
828 static inline void ata_ehi_hotplugged(struct ata_eh_info
*ehi
)
830 if (ehi
->flags
& ATA_EHI_HOTPLUGGED
)
833 ehi
->flags
|= ATA_EHI_HOTPLUGGED
;
834 ehi
->hotplug_timestamp
= jiffies
;
836 ehi
->err_mask
|= AC_ERR_ATA_BUS
;
837 ehi
->action
|= ATA_EH_SOFTRESET
;
838 ehi
->probe_mask
|= (1 << ATA_MAX_DEVICES
) - 1;
845 ata_sg_is_last(struct scatterlist
*sg
, struct ata_queued_cmd
*qc
)
847 if (sg
== &qc
->pad_sgent
)
851 if (((sg
- qc
->__sg
) + 1) == qc
->n_elem
)
856 static inline struct scatterlist
*
857 ata_qc_first_sg(struct ata_queued_cmd
*qc
)
862 return &qc
->pad_sgent
;
866 static inline struct scatterlist
*
867 ata_qc_next_sg(struct scatterlist
*sg
, struct ata_queued_cmd
*qc
)
869 if (sg
== &qc
->pad_sgent
)
871 if (++sg
- qc
->__sg
< qc
->n_elem
)
874 return &qc
->pad_sgent
;
878 #define ata_for_each_sg(sg, qc) \
879 for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc))
881 static inline unsigned int ata_tag_valid(unsigned int tag
)
883 return (tag
< ATA_MAX_QUEUE
) ? 1 : 0;
886 static inline unsigned int ata_tag_internal(unsigned int tag
)
888 return tag
== ATA_MAX_QUEUE
- 1;
894 static inline unsigned int ata_class_enabled(unsigned int class)
896 return class == ATA_DEV_ATA
|| class == ATA_DEV_ATAPI
;
899 static inline unsigned int ata_class_disabled(unsigned int class)
901 return class == ATA_DEV_ATA_UNSUP
|| class == ATA_DEV_ATAPI_UNSUP
;
904 static inline unsigned int ata_class_absent(unsigned int class)
906 return !ata_class_enabled(class) && !ata_class_disabled(class);
909 static inline unsigned int ata_dev_enabled(const struct ata_device
*dev
)
911 return ata_class_enabled(dev
->class);
914 static inline unsigned int ata_dev_disabled(const struct ata_device
*dev
)
916 return ata_class_disabled(dev
->class);
919 static inline unsigned int ata_dev_absent(const struct ata_device
*dev
)
921 return ata_class_absent(dev
->class);
927 static inline int ata_port_max_devices(const struct ata_port
*ap
)
929 if (ap
->flags
& ATA_FLAG_SLAVE_POSS
)
935 static inline u8
ata_chk_status(struct ata_port
*ap
)
937 return ap
->ops
->check_status(ap
);
942 * ata_pause - Flush writes and pause 400 nanoseconds.
943 * @ap: Port to wait for.
946 * Inherited from caller.
949 static inline void ata_pause(struct ata_port
*ap
)
957 * ata_busy_wait - Wait for a port status register
958 * @ap: Port to wait for.
960 * Waits up to max*10 microseconds for the selected bits in the port's
961 * status register to be cleared.
962 * Returns final value of status register.
965 * Inherited from caller.
968 static inline u8
ata_busy_wait(struct ata_port
*ap
, unsigned int bits
,
975 status
= ata_chk_status(ap
);
977 } while ((status
& bits
) && (max
> 0));
984 * ata_wait_idle - Wait for a port to be idle.
985 * @ap: Port to wait for.
987 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
988 * Returns final value of status register.
991 * Inherited from caller.
994 static inline u8
ata_wait_idle(struct ata_port
*ap
)
996 u8 status
= ata_busy_wait(ap
, ATA_BUSY
| ATA_DRQ
, 1000);
998 if (status
& (ATA_BUSY
| ATA_DRQ
)) {
999 unsigned long l
= ap
->ioaddr
.status_addr
;
1000 if (ata_msg_warn(ap
))
1001 printk(KERN_WARNING
"ATA: abnormal status 0x%X on port 0x%lX\n",
1008 static inline void ata_qc_set_polling(struct ata_queued_cmd
*qc
)
1010 qc
->tf
.ctl
|= ATA_NIEN
;
1013 static inline struct ata_queued_cmd
*__ata_qc_from_tag(struct ata_port
*ap
,
1016 if (likely(ata_tag_valid(tag
)))
1017 return &ap
->qcmd
[tag
];
1021 static inline struct ata_queued_cmd
*ata_qc_from_tag(struct ata_port
*ap
,
1024 struct ata_queued_cmd
*qc
= __ata_qc_from_tag(ap
, tag
);
1026 if (unlikely(!qc
) || !ap
->ops
->error_handler
)
1029 if ((qc
->flags
& (ATA_QCFLAG_ACTIVE
|
1030 ATA_QCFLAG_FAILED
)) == ATA_QCFLAG_ACTIVE
)
1036 static inline void ata_tf_init(struct ata_device
*dev
, struct ata_taskfile
*tf
)
1038 memset(tf
, 0, sizeof(*tf
));
1040 tf
->ctl
= dev
->ap
->ctl
;
1041 if (dev
->devno
== 0)
1042 tf
->device
= ATA_DEVICE_OBS
;
1044 tf
->device
= ATA_DEVICE_OBS
| ATA_DEV1
;
1047 static inline void ata_qc_reinit(struct ata_queued_cmd
*qc
)
1051 qc
->cursect
= qc
->cursg
= qc
->cursg_ofs
= 0;
1053 qc
->nbytes
= qc
->curbytes
= 0;
1056 ata_tf_init(qc
->dev
, &qc
->tf
);
1058 /* init result_tf such that it indicates normal completion */
1059 qc
->result_tf
.command
= ATA_DRDY
;
1060 qc
->result_tf
.feature
= 0;
1064 * ata_irq_on - Enable interrupts on a port.
1065 * @ap: Port on which interrupts are enabled.
1067 * Enable interrupts on a legacy IDE device using MMIO or PIO,
1068 * wait for idle, clear any pending interrupts.
1071 * Inherited from caller.
1074 static inline u8
ata_irq_on(struct ata_port
*ap
)
1076 struct ata_ioports
*ioaddr
= &ap
->ioaddr
;
1079 ap
->ctl
&= ~ATA_NIEN
;
1080 ap
->last_ctl
= ap
->ctl
;
1082 if (ap
->flags
& ATA_FLAG_MMIO
)
1083 writeb(ap
->ctl
, (void __iomem
*) ioaddr
->ctl_addr
);
1085 outb(ap
->ctl
, ioaddr
->ctl_addr
);
1086 tmp
= ata_wait_idle(ap
);
1088 ap
->ops
->irq_clear(ap
);
1095 * ata_irq_ack - Acknowledge a device interrupt.
1096 * @ap: Port on which interrupts are enabled.
1098 * Wait up to 10 ms for legacy IDE device to become idle (BUSY
1099 * or BUSY+DRQ clear). Obtain dma status and port status from
1100 * device. Clear the interrupt. Return port status.
1105 static inline u8
ata_irq_ack(struct ata_port
*ap
, unsigned int chk_drq
)
1107 unsigned int bits
= chk_drq
? ATA_BUSY
| ATA_DRQ
: ATA_BUSY
;
1108 u8 host_stat
, post_stat
, status
;
1110 status
= ata_busy_wait(ap
, bits
, 1000);
1112 if (ata_msg_err(ap
))
1113 printk(KERN_ERR
"abnormal status 0x%X\n", status
);
1115 /* get controller status; clear intr, err bits */
1116 if (ap
->flags
& ATA_FLAG_MMIO
) {
1117 void __iomem
*mmio
= (void __iomem
*) ap
->ioaddr
.bmdma_addr
;
1118 host_stat
= readb(mmio
+ ATA_DMA_STATUS
);
1119 writeb(host_stat
| ATA_DMA_INTR
| ATA_DMA_ERR
,
1120 mmio
+ ATA_DMA_STATUS
);
1122 post_stat
= readb(mmio
+ ATA_DMA_STATUS
);
1124 host_stat
= inb(ap
->ioaddr
.bmdma_addr
+ ATA_DMA_STATUS
);
1125 outb(host_stat
| ATA_DMA_INTR
| ATA_DMA_ERR
,
1126 ap
->ioaddr
.bmdma_addr
+ ATA_DMA_STATUS
);
1128 post_stat
= inb(ap
->ioaddr
.bmdma_addr
+ ATA_DMA_STATUS
);
1131 if (ata_msg_intr(ap
))
1132 printk(KERN_INFO
"%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
1134 host_stat
, post_stat
, status
);
1139 static inline int ata_try_flush_cache(const struct ata_device
*dev
)
1141 return ata_id_wcache_enabled(dev
->id
) ||
1142 ata_id_has_flush(dev
->id
) ||
1143 ata_id_has_flush_ext(dev
->id
);
1146 static inline unsigned int ac_err_mask(u8 status
)
1148 if (status
& (ATA_BUSY
| ATA_DRQ
))
1150 if (status
& (ATA_ERR
| ATA_DF
))
1155 static inline unsigned int __ac_err_mask(u8 status
)
1157 unsigned int mask
= ac_err_mask(status
);
1159 return AC_ERR_OTHER
;
1163 static inline int ata_pad_alloc(struct ata_port
*ap
, struct device
*dev
)
1166 ap
->pad
= dma_alloc_coherent(dev
, ATA_DMA_PAD_BUF_SZ
,
1167 &ap
->pad_dma
, GFP_KERNEL
);
1168 return (ap
->pad
== NULL
) ? -ENOMEM
: 0;
1171 static inline void ata_pad_free(struct ata_port
*ap
, struct device
*dev
)
1173 dma_free_coherent(dev
, ATA_DMA_PAD_BUF_SZ
, ap
->pad
, ap
->pad_dma
);
1176 static inline struct ata_port
*ata_shost_to_port(struct Scsi_Host
*host
)
1178 return (struct ata_port
*) &host
->hostdata
[0];
1181 #endif /* __LINUX_LIBATA_H__ */