2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
26 #ifndef __LINUX_LIBATA_H__
27 #define __LINUX_LIBATA_H__
29 #include <linux/delay.h>
30 #include <linux/jiffies.h>
31 #include <linux/interrupt.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/scatterlist.h>
35 #include <linux/ata.h>
36 #include <linux/workqueue.h>
37 #include <scsi/scsi_host.h>
38 #include <linux/acpi.h>
39 #include <linux/cdrom.h>
40 #include <linux/sched.h>
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
46 #ifdef CONFIG_ATA_NONSTANDARD
47 #include <asm/libata-portmap.h>
49 #include <asm-generic/libata-portmap.h>
53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
56 #undef ATA_DEBUG /* debugging output */
57 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59 #undef ATA_NDEBUG /* define to disable quick runtime checks */
62 /* note: prints function name for you */
64 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
65 #ifdef ATA_VERBOSE_DEBUG
66 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
68 #define VPRINTK(fmt, args...)
69 #endif /* ATA_VERBOSE_DEBUG */
71 #define DPRINTK(fmt, args...)
72 #define VPRINTK(fmt, args...)
73 #endif /* ATA_DEBUG */
75 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
77 #define ata_print_version_once(dev, version) \
79 static bool __print_once; \
81 if (!__print_once) { \
82 __print_once = true; \
83 ata_print_version(dev, version); \
87 /* NEW: debug levels */
88 #define HAVE_LIBATA_MSG 1
92 ATA_MSG_INFO = 0x0002,
93 ATA_MSG_PROBE = 0x0004,
94 ATA_MSG_WARN = 0x0008,
95 ATA_MSG_MALLOC = 0x0010,
97 ATA_MSG_INTR = 0x0040,
101 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
102 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
103 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
104 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
105 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
107 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
108 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
110 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
112 if (dval < 0 || dval >= (sizeof(u32) * 8))
113 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
116 return (1 << dval) - 1;
119 /* defines only for the constants which don't work well as enums */
120 #define ATA_TAG_POISON 0xfafbfcfdU
123 /* various global constants */
124 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
125 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
127 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
129 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
130 ATA_SHORT_PAUSE = 16,
132 ATAPI_MAX_DRAIN = 16 << 10,
134 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
136 ATA_SHT_EMULATED = 1,
137 ATA_SHT_CMD_PER_LUN = 1,
138 ATA_SHT_THIS_ID = -1,
139 ATA_SHT_USE_CLUSTERING = 1,
141 /* struct ata_taskfile flags */
142 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
143 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
144 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
145 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
146 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
147 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
148 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
151 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
152 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
153 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
154 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
155 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
157 /* struct ata_device stuff */
158 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
159 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
160 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
161 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
162 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
163 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
164 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
165 ATA_DFLAG_AN = (1 << 7), /* AN configured */
166 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
167 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
169 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
170 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
171 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
172 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
173 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
174 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
175 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
177 ATA_DFLAG_DETACH = (1 << 24),
178 ATA_DFLAG_DETACHED = (1 << 25),
180 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
181 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
182 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
184 ATA_DEV_UNKNOWN = 0, /* unknown device */
185 ATA_DEV_ATA = 1, /* ATA device */
186 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
187 ATA_DEV_ATAPI = 3, /* ATAPI device */
188 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
189 ATA_DEV_PMP = 5, /* SATA port multiplier */
190 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
191 ATA_DEV_SEMB = 7, /* SEMB */
192 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
193 ATA_DEV_NONE = 9, /* no device */
195 /* struct ata_link flags */
196 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
197 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
198 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
199 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
200 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
201 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
202 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
203 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
204 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
205 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
207 /* struct ata_port flags */
208 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
209 /* (doesn't imply presence) */
210 ATA_FLAG_SATA = (1 << 1),
211 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
212 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
213 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
214 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
215 * doesn't handle PIO interrupts */
216 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
217 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
218 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
219 ATA_FLAG_DEBUGMSG = (1 << 13),
220 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
221 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
222 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
223 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
224 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
225 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
226 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
228 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
230 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
232 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
235 /* struct ata_port pflags */
236 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
237 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
238 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
239 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
240 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
241 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
242 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
243 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
244 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
245 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
247 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
248 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
249 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
251 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
252 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
254 /* struct ata_queued_cmd flags */
255 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
256 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
257 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
258 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
259 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
260 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
261 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
263 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
264 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
265 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
268 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
269 ATA_HOST_STARTED = (1 << 1), /* Host started */
270 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
271 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
273 /* bits 24:31 of host->flags are reserved for LLD specific flags */
275 /* various lengths of time */
276 ATA_TMOUT_BOOT = 30000, /* heuristic */
277 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
278 ATA_TMOUT_INTERNAL_QUICK = 5000,
279 ATA_TMOUT_MAX_PARK = 30000,
282 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
283 * is too much without parallel probing. Use 2s if parallel
284 * probing is available, 800ms otherwise.
286 ATA_TMOUT_FF_WAIT_LONG = 2000,
287 ATA_TMOUT_FF_WAIT = 800,
289 /* Spec mandates to wait for ">= 2ms" before checking status
290 * after reset. We wait 150ms, because that was the magic
291 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
292 * the period of time between when the ATA command register is
293 * written, and then status is checked. Because waiting for
294 * "a while" before checking status is fine, post SRST, we
295 * perform this magic delay here as well.
297 * Old drivers/ide uses the 2mS rule and then waits for ready.
299 ATA_WAIT_AFTER_RESET = 150,
301 /* If PMP is supported, we have to do follow-up SRST. As some
302 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
303 * advised to wait only for the following duration before
306 ATA_TMOUT_PMP_SRST_WAIT = 5000,
320 /* SATA port states */
325 /* encoding various smaller bitmaps into a single
326 * unsigned long bitmap
328 ATA_NR_PIO_MODES = 7,
329 ATA_NR_MWDMA_MODES = 5,
330 ATA_NR_UDMA_MODES = 8,
333 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
334 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
336 /* size of buffer to pad xfers ending on unaligned boundaries */
342 /* return values for ->qc_defer */
346 /* desc_len for ata_eh_info and context */
347 ATA_EH_DESC_LEN = 80,
349 /* reset / recovery action types */
350 ATA_EH_REVALIDATE = (1 << 0),
351 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
352 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
353 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
354 ATA_EH_ENABLE_LINK = (1 << 3),
355 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
357 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
358 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
361 /* ata_eh_info->flags */
362 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
363 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
364 ATA_EHI_QUIET = (1 << 3), /* be quiet */
365 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
367 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
368 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
369 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
370 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
371 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
373 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
375 /* mask of flags to transfer *to* the slave link */
376 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
378 /* max tries if error condition is still set after ->error_handler */
379 ATA_EH_MAX_TRIES = 5,
381 /* sometimes resuming a link requires several retries */
382 ATA_LINK_RESUME_TRIES = 5,
384 /* how hard are we gonna try to probe/recover devices */
385 ATA_PROBE_MAX_TRIES = 3,
386 ATA_EH_DEV_TRIES = 3,
387 ATA_EH_PMP_TRIES = 5,
388 ATA_EH_PMP_LINK_TRIES = 3,
390 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
392 /* This should match the actual table size of
393 * ata_eh_cmd_timeout_table in libata-eh.c.
395 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
397 /* Horkage types. May be set by libata or controller on drives
398 (some horkage may be drive/controller pair dependent */
400 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
401 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
402 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
403 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
404 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
405 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
406 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
407 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
408 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
409 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
410 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
411 not multiple of 16 bytes */
412 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
413 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
414 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
415 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
416 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
417 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
418 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
420 /* DMA mask for user DMA control: User visible values; DO NOT
422 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
423 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
424 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
426 /* ATAPI command types */
427 ATAPI_READ = 0, /* READs */
428 ATAPI_WRITE = 1, /* WRITEs */
429 ATAPI_READ_CD = 2, /* READ CD [MSF] */
430 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
431 ATAPI_MISC = 4, /* the rest */
433 /* Timing constants */
434 ATA_TIMING_SETUP = (1 << 0),
435 ATA_TIMING_ACT8B = (1 << 1),
436 ATA_TIMING_REC8B = (1 << 2),
437 ATA_TIMING_CYC8B = (1 << 3),
438 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
440 ATA_TIMING_ACTIVE = (1 << 4),
441 ATA_TIMING_RECOVER = (1 << 5),
442 ATA_TIMING_DMACK_HOLD = (1 << 6),
443 ATA_TIMING_CYCLE = (1 << 7),
444 ATA_TIMING_UDMA = (1 << 8),
445 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
446 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
447 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
448 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
452 ATA_ACPI_FILTER_SETXFER = 1 << 0,
453 ATA_ACPI_FILTER_LOCK = 1 << 1,
454 ATA_ACPI_FILTER_DIPM = 1 << 2,
455 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
456 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
458 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
459 ATA_ACPI_FILTER_LOCK |
460 ATA_ACPI_FILTER_DIPM,
464 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
466 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
468 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
472 enum hsm_task_states {
473 HSM_ST_IDLE, /* no command on going */
474 HSM_ST_FIRST, /* (waiting the device to)
475 write CDB or first data block */
476 HSM_ST, /* (waiting the device to) transfer data */
477 HSM_ST_LAST, /* (waiting the device to) complete command */
478 HSM_ST_ERR, /* error */
481 enum ata_completion_errors {
482 AC_ERR_DEV = (1 << 0), /* device reported error */
483 AC_ERR_HSM = (1 << 1), /* host state machine violation */
484 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
485 AC_ERR_MEDIA = (1 << 3), /* media error */
486 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
487 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
488 AC_ERR_SYSTEM = (1 << 6), /* system error */
489 AC_ERR_INVALID = (1 << 7), /* invalid argument */
490 AC_ERR_OTHER = (1 << 8), /* unknown */
491 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
492 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
496 * Link power management policy: If you alter this, you also need to
497 * alter libata-scsi.c (for the ascii descriptions)
499 enum ata_lpm_policy {
507 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
508 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
511 /* forward declarations */
513 struct ata_port_operations;
516 struct ata_queued_cmd;
519 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
520 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
521 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
522 unsigned long deadline);
523 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
525 extern struct device_attribute dev_attr_link_power_management_policy;
526 extern struct device_attribute dev_attr_unload_heads;
527 extern struct device_attribute dev_attr_em_message_type;
528 extern struct device_attribute dev_attr_em_message;
529 extern struct device_attribute dev_attr_sw_activity;
537 struct ata_taskfile {
538 unsigned long flags; /* ATA_TFLAG_xxx */
539 u8 protocol; /* ATA_PROT_xxx */
541 u8 ctl; /* control reg */
543 u8 hob_feature; /* additional data */
544 u8 hob_nsect; /* to support LBA48 */
557 u8 command; /* IO operation */
560 #ifdef CONFIG_ATA_SFF
562 void __iomem *cmd_addr;
563 void __iomem *data_addr;
564 void __iomem *error_addr;
565 void __iomem *feature_addr;
566 void __iomem *nsect_addr;
567 void __iomem *lbal_addr;
568 void __iomem *lbam_addr;
569 void __iomem *lbah_addr;
570 void __iomem *device_addr;
571 void __iomem *status_addr;
572 void __iomem *command_addr;
573 void __iomem *altstatus_addr;
574 void __iomem *ctl_addr;
575 #ifdef CONFIG_ATA_BMDMA
576 void __iomem *bmdma_addr;
577 #endif /* CONFIG_ATA_BMDMA */
578 void __iomem *scr_addr;
580 #endif /* CONFIG_ATA_SFF */
585 void __iomem * const *iomap;
586 unsigned int n_ports;
588 struct ata_port_operations *ops;
591 struct mutex eh_mutex;
592 struct task_struct *eh_owner;
594 struct ata_port *simplex_claimed; /* channel owning the DMA */
595 struct ata_port *ports[0];
598 struct ata_queued_cmd {
600 struct ata_device *dev;
602 struct scsi_cmnd *scsicmd;
603 void (*scsidone)(struct scsi_cmnd *);
605 struct ata_taskfile tf;
606 u8 cdb[ATAPI_CDB_LEN];
608 unsigned long flags; /* ATA_QCFLAG_xxx */
611 unsigned int orig_n_elem;
615 unsigned int sect_size;
618 unsigned int extrabytes;
619 unsigned int curbytes;
621 struct scatterlist sgent;
623 struct scatterlist *sg;
625 struct scatterlist *cursg;
626 unsigned int cursg_ofs;
628 unsigned int err_mask;
629 struct ata_taskfile result_tf;
630 ata_qc_cb_t complete_fn;
636 struct ata_port_stats {
637 unsigned long unhandled_irq;
638 unsigned long idle_irq;
639 unsigned long rw_reqbuf;
642 struct ata_ering_entry {
644 unsigned int err_mask;
650 struct ata_ering_entry ring[ATA_ERING_SIZE];
654 struct ata_link *link;
655 unsigned int devno; /* 0 or 1 */
656 unsigned int horkage; /* List of broken features */
657 unsigned long flags; /* ATA_DFLAG_xxx */
658 struct scsi_device *sdev; /* attached SCSI device */
660 #ifdef CONFIG_ATA_ACPI
661 union acpi_object *gtf_cache;
662 unsigned int gtf_filter;
664 #ifdef CONFIG_SATA_ZPODD
668 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
669 u64 n_sectors; /* size of device, if ATA */
670 u64 n_native_sectors; /* native size, if ATA */
671 unsigned int class; /* ATA_DEV_xxx */
672 unsigned long unpark_deadline;
677 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
679 unsigned int multi_count; /* sectors count for
680 READ/WRITE MULTIPLE */
681 unsigned int max_sectors; /* per-device max sectors */
682 unsigned int cdb_len;
684 /* per-dev xfer mask */
685 unsigned long pio_mask;
686 unsigned long mwdma_mask;
687 unsigned long udma_mask;
689 /* for CHS addressing */
690 u16 cylinders; /* Number of cylinders */
691 u16 heads; /* Number of heads */
692 u16 sectors; /* Number of sectors per track */
695 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
696 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
699 /* DEVSLP Timing Variables from Identify Device Data Log */
700 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
704 /* ering is CLEAR_END, read comment above CLEAR_END */
705 struct ata_ering ering;
708 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
709 * cleared to zero on ata_dev_init().
711 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
712 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
715 struct ata_device *dev; /* offending device */
716 u32 serror; /* SError from LLDD */
717 unsigned int err_mask; /* port-wide err_mask */
718 unsigned int action; /* ATA_EH_* action mask */
719 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
720 unsigned int flags; /* ATA_EHI_* flags */
722 unsigned int probe_mask;
724 char desc[ATA_EH_DESC_LEN];
728 struct ata_eh_context {
729 struct ata_eh_info i;
730 int tries[ATA_MAX_DEVICES];
731 int cmd_timeout_idx[ATA_MAX_DEVICES]
732 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
733 unsigned int classes[ATA_MAX_DEVICES];
734 unsigned int did_probe_mask;
735 unsigned int unloaded_mask;
736 unsigned int saved_ncq_enabled;
737 u8 saved_xfer_mode[ATA_MAX_DEVICES];
738 /* timestamp for the last reset attempt or success */
739 unsigned long last_reset;
742 struct ata_acpi_drive
748 struct ata_acpi_gtm {
749 struct ata_acpi_drive drive[2];
755 int pmp; /* port multiplier port # */
758 unsigned int active_tag; /* active tag on this link */
759 u32 sactive; /* active NCQ commands */
761 unsigned int flags; /* ATA_LFLAG_xxx */
763 u32 saved_scontrol; /* SControl on probe */
764 unsigned int hw_sata_spd_limit;
765 unsigned int sata_spd_limit;
766 unsigned int sata_spd; /* current SATA PHY speed */
767 enum ata_lpm_policy lpm_policy;
769 /* record runtime error info, protected by host_set lock */
770 struct ata_eh_info eh_info;
772 struct ata_eh_context eh_context;
774 struct ata_device device[ATA_MAX_DEVICES];
776 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
777 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
780 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
781 struct ata_port_operations *ops;
783 /* Flags owned by the EH context. Only EH should touch these once the
785 unsigned long flags; /* ATA_FLAG_xxx */
786 /* Flags that change dynamically, protected by ap->lock */
787 unsigned int pflags; /* ATA_PFLAG_xxx */
788 unsigned int print_id; /* user visible unique port ID */
789 unsigned int local_port_no; /* host local port num */
790 unsigned int port_no; /* 0 based port no. inside the host */
792 #ifdef CONFIG_ATA_SFF
793 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
794 u8 ctl; /* cache of ATA control register */
795 u8 last_ctl; /* Cache last written value */
796 struct ata_link* sff_pio_task_link; /* link currently used */
797 struct delayed_work sff_pio_task;
798 #ifdef CONFIG_ATA_BMDMA
799 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
800 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
801 #endif /* CONFIG_ATA_BMDMA */
802 #endif /* CONFIG_ATA_SFF */
804 unsigned int pio_mask;
805 unsigned int mwdma_mask;
806 unsigned int udma_mask;
807 unsigned int cbl; /* cable type; ATA_CBL_xxx */
809 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
810 unsigned long qc_allocated;
811 unsigned int qc_active;
812 int nr_active_links; /* #links with active qcs */
814 struct ata_link link; /* host default link */
815 struct ata_link *slave_link; /* see ata_slave_link_init() */
817 int nr_pmp_links; /* nr of available PMP links */
818 struct ata_link *pmp_link; /* array of PMP links */
819 struct ata_link *excl_link; /* for PMP qc exclusion */
821 struct ata_port_stats stats;
822 struct ata_host *host;
826 struct mutex scsi_scan_mutex;
827 struct delayed_work hotplug_task;
828 struct work_struct scsi_rescan_task;
830 unsigned int hsm_task_state;
833 struct list_head eh_done_q;
834 wait_queue_head_t eh_wait_q;
836 struct completion park_req_pending;
838 pm_message_t pm_mesg;
840 enum ata_lpm_policy target_lpm_policy;
842 struct timer_list fastdrain_timer;
843 unsigned long fastdrain_cnt;
848 #ifdef CONFIG_ATA_ACPI
849 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
852 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
855 /* The following initializer overrides a method to NULL whether one of
856 * its parent has the method defined or not. This is equivalent to
857 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
858 * expression and thus can't be used as an initializer.
860 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
862 struct ata_port_operations {
866 int (*qc_defer)(struct ata_queued_cmd *qc);
867 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
868 void (*qc_prep)(struct ata_queued_cmd *qc);
869 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
870 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
873 * Configuration and exception handling
875 int (*cable_detect)(struct ata_port *ap);
876 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
877 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
878 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
879 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
880 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
882 void (*dev_config)(struct ata_device *dev);
884 void (*freeze)(struct ata_port *ap);
885 void (*thaw)(struct ata_port *ap);
886 ata_prereset_fn_t prereset;
887 ata_reset_fn_t softreset;
888 ata_reset_fn_t hardreset;
889 ata_postreset_fn_t postreset;
890 ata_prereset_fn_t pmp_prereset;
891 ata_reset_fn_t pmp_softreset;
892 ata_reset_fn_t pmp_hardreset;
893 ata_postreset_fn_t pmp_postreset;
894 void (*error_handler)(struct ata_port *ap);
895 void (*lost_interrupt)(struct ata_port *ap);
896 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
897 void (*sched_eh)(struct ata_port *ap);
898 void (*end_eh)(struct ata_port *ap);
903 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
904 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
905 void (*pmp_attach)(struct ata_port *ap);
906 void (*pmp_detach)(struct ata_port *ap);
907 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
911 * Start, stop, suspend and resume
913 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
914 int (*port_resume)(struct ata_port *ap);
915 int (*port_start)(struct ata_port *ap);
916 void (*port_stop)(struct ata_port *ap);
917 void (*host_stop)(struct ata_host *host);
919 #ifdef CONFIG_ATA_SFF
921 * SFF / taskfile oriented ops
923 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
924 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
925 u8 (*sff_check_status)(struct ata_port *ap);
926 u8 (*sff_check_altstatus)(struct ata_port *ap);
927 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
928 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
929 void (*sff_exec_command)(struct ata_port *ap,
930 const struct ata_taskfile *tf);
931 unsigned int (*sff_data_xfer)(struct ata_device *dev,
932 unsigned char *buf, unsigned int buflen, int rw);
933 void (*sff_irq_on)(struct ata_port *);
934 bool (*sff_irq_check)(struct ata_port *);
935 void (*sff_irq_clear)(struct ata_port *);
936 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
938 #ifdef CONFIG_ATA_BMDMA
939 void (*bmdma_setup)(struct ata_queued_cmd *qc);
940 void (*bmdma_start)(struct ata_queued_cmd *qc);
941 void (*bmdma_stop)(struct ata_queued_cmd *qc);
942 u8 (*bmdma_status)(struct ata_port *ap);
943 #endif /* CONFIG_ATA_BMDMA */
944 #endif /* CONFIG_ATA_SFF */
946 ssize_t (*em_show)(struct ata_port *ap, char *buf);
947 ssize_t (*em_store)(struct ata_port *ap, const char *message,
949 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
950 ssize_t (*sw_activity_store)(struct ata_device *dev,
951 enum sw_activity val);
952 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
958 void (*phy_reset)(struct ata_port *ap);
959 void (*eng_timeout)(struct ata_port *ap);
962 * ->inherits must be the last field and all the preceding
963 * fields must be pointers.
965 const struct ata_port_operations *inherits;
968 struct ata_port_info {
970 unsigned long link_flags;
971 unsigned long pio_mask;
972 unsigned long mwdma_mask;
973 unsigned long udma_mask;
974 struct ata_port_operations *port_ops;
979 unsigned short mode; /* ATA mode */
980 unsigned short setup; /* t1 */
981 unsigned short act8b; /* t2 for 8-bit I/O */
982 unsigned short rec8b; /* t2i for 8-bit I/O */
983 unsigned short cyc8b; /* t0 for 8-bit I/O */
984 unsigned short active; /* t2 or tD */
985 unsigned short recover; /* t2i or tK */
986 unsigned short dmack_hold; /* tj */
987 unsigned short cycle; /* t0 */
988 unsigned short udma; /* t2CYCTYP/2 */
992 * Core layer - drivers/ata/libata-core.c
994 extern const unsigned long sata_deb_timing_normal[];
995 extern const unsigned long sata_deb_timing_hotplug[];
996 extern const unsigned long sata_deb_timing_long[];
998 extern struct ata_port_operations ata_dummy_port_ops;
999 extern const struct ata_port_info ata_dummy_port_info;
1004 static inline unsigned int ata_prot_flags(u8 prot)
1007 case ATA_PROT_NODATA:
1010 return ATA_PROT_FLAG_PIO;
1012 return ATA_PROT_FLAG_DMA;
1014 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
1015 case ATAPI_PROT_NODATA:
1016 return ATA_PROT_FLAG_ATAPI;
1017 case ATAPI_PROT_PIO:
1018 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
1019 case ATAPI_PROT_DMA:
1020 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
1025 static inline int ata_is_atapi(u8 prot)
1027 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
1030 static inline int ata_is_nodata(u8 prot)
1032 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
1035 static inline int ata_is_pio(u8 prot)
1037 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
1040 static inline int ata_is_dma(u8 prot)
1042 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
1045 static inline int ata_is_ncq(u8 prot)
1047 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
1050 static inline int ata_is_data(u8 prot)
1052 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
1055 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1057 return (tf->command == ATA_CMD_READ_MULTI) ||
1058 (tf->command == ATA_CMD_WRITE_MULTI) ||
1059 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1060 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1061 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1064 static inline const unsigned long *
1065 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1067 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1068 return sata_deb_timing_hotplug;
1070 return sata_deb_timing_normal;
1073 static inline int ata_port_is_dummy(struct ata_port *ap)
1075 return ap->ops == &ata_dummy_port_ops;
1078 extern int sata_set_spd(struct ata_link *link);
1079 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1080 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1081 int (*check_ready)(struct ata_link *link));
1082 extern int sata_link_debounce(struct ata_link *link,
1083 const unsigned long *params, unsigned long deadline);
1084 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1085 unsigned long deadline);
1086 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1088 extern int sata_link_hardreset(struct ata_link *link,
1089 const unsigned long *timing, unsigned long deadline,
1090 bool *online, int (*check_ready)(struct ata_link *));
1091 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1092 unsigned long deadline);
1093 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1095 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1096 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1097 const struct ata_port_info * const * ppi, int n_ports);
1098 extern int ata_slave_link_init(struct ata_port *ap);
1099 extern int ata_host_start(struct ata_host *host);
1100 extern int ata_host_register(struct ata_host *host,
1101 struct scsi_host_template *sht);
1102 extern int ata_host_activate(struct ata_host *host, int irq,
1103 irq_handler_t irq_handler, unsigned long irq_flags,
1104 struct scsi_host_template *sht);
1105 extern void ata_host_detach(struct ata_host *host);
1106 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1107 extern int ata_scsi_detect(struct scsi_host_template *sht);
1108 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
1109 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1110 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1111 int cmd, void __user *arg);
1112 extern void ata_sas_port_destroy(struct ata_port *);
1113 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1114 struct ata_port_info *, struct Scsi_Host *);
1115 extern void ata_sas_async_probe(struct ata_port *ap);
1116 extern int ata_sas_sync_probe(struct ata_port *ap);
1117 extern int ata_sas_port_init(struct ata_port *);
1118 extern int ata_sas_port_start(struct ata_port *ap);
1119 extern void ata_sas_port_stop(struct ata_port *ap);
1120 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1121 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1122 extern int sata_scr_valid(struct ata_link *link);
1123 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1124 extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1125 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1126 extern bool ata_link_online(struct ata_link *link);
1127 extern bool ata_link_offline(struct ata_link *link);
1129 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1130 extern void ata_host_resume(struct ata_host *host);
1131 extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async);
1132 extern int ata_sas_port_async_resume(struct ata_port *ap, int *async);
1134 static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
1138 static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async)
1143 extern int ata_ratelimit(void);
1144 extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1145 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1146 u32 val, unsigned long interval, unsigned long timeout);
1147 extern int atapi_cmd_type(u8 opcode);
1148 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1149 u8 pmp, int is_cmd, u8 *fis);
1150 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1151 extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1152 unsigned long mwdma_mask, unsigned long udma_mask);
1153 extern void ata_unpack_xfermask(unsigned long xfer_mask,
1154 unsigned long *pio_mask, unsigned long *mwdma_mask,
1155 unsigned long *udma_mask);
1156 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1157 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1158 extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1159 extern const char *ata_mode_string(unsigned long xfer_mask);
1160 extern unsigned long ata_id_xfermask(const u16 *id);
1161 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1162 extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1163 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1164 unsigned int n_elem);
1165 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1166 extern void ata_dev_disable(struct ata_device *adev);
1167 extern void ata_id_string(const u16 *id, unsigned char *s,
1168 unsigned int ofs, unsigned int len);
1169 extern void ata_id_c_string(const u16 *id, unsigned char *s,
1170 unsigned int ofs, unsigned int len);
1171 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1172 struct ata_taskfile *tf, u16 *id);
1173 extern void ata_qc_complete(struct ata_queued_cmd *qc);
1174 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1175 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1176 extern int ata_std_bios_param(struct scsi_device *sdev,
1177 struct block_device *bdev,
1178 sector_t capacity, int geom[]);
1179 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1180 extern int ata_scsi_slave_config(struct scsi_device *sdev);
1181 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1182 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1183 int queue_depth, int reason);
1184 extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1185 int queue_depth, int reason);
1186 extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1187 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1188 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1189 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1191 extern int ata_cable_40wire(struct ata_port *ap);
1192 extern int ata_cable_80wire(struct ata_port *ap);
1193 extern int ata_cable_sata(struct ata_port *ap);
1194 extern int ata_cable_ignore(struct ata_port *ap);
1195 extern int ata_cable_unknown(struct ata_port *ap);
1197 /* Timing helpers */
1198 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1199 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1200 extern int ata_timing_compute(struct ata_device *, unsigned short,
1201 struct ata_timing *, int, int);
1202 extern void ata_timing_merge(const struct ata_timing *,
1203 const struct ata_timing *, struct ata_timing *,
1205 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1212 unsigned int reg; /* PCI config register to read */
1213 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1218 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1219 extern void ata_pci_remove_one(struct pci_dev *pdev);
1222 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1223 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1224 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1225 extern int ata_pci_device_resume(struct pci_dev *pdev);
1226 #endif /* CONFIG_PM */
1227 #endif /* CONFIG_PCI */
1229 struct platform_device;
1231 extern int ata_platform_remove_one(struct platform_device *pdev);
1234 * ACPI - drivers/ata/libata-acpi.c
1236 #ifdef CONFIG_ATA_ACPI
1237 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1239 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1240 return &ap->__acpi_init_gtm;
1243 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1244 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1245 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1246 const struct ata_acpi_gtm *gtm);
1247 acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
1248 acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
1249 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1251 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1256 static inline int ata_acpi_stm(const struct ata_port *ap,
1257 struct ata_acpi_gtm *stm)
1262 static inline int ata_acpi_gtm(const struct ata_port *ap,
1263 struct ata_acpi_gtm *stm)
1268 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1269 const struct ata_acpi_gtm *gtm)
1274 static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1275 const struct ata_acpi_gtm *gtm)
1282 * EH - drivers/ata/libata-eh.c
1284 extern void ata_port_schedule_eh(struct ata_port *ap);
1285 extern void ata_port_wait_eh(struct ata_port *ap);
1286 extern int ata_link_abort(struct ata_link *link);
1287 extern int ata_port_abort(struct ata_port *ap);
1288 extern int ata_port_freeze(struct ata_port *ap);
1289 extern int sata_async_notification(struct ata_port *ap);
1291 extern void ata_eh_freeze_port(struct ata_port *ap);
1292 extern void ata_eh_thaw_port(struct ata_port *ap);
1294 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1295 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1296 extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1298 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1299 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1300 ata_postreset_fn_t postreset);
1301 extern void ata_std_error_handler(struct ata_port *ap);
1302 extern void ata_std_sched_eh(struct ata_port *ap);
1303 extern void ata_std_end_eh(struct ata_port *ap);
1304 extern int ata_link_nr_enabled(struct ata_link *link);
1307 * Base operations to inherit from and initializers for sht
1311 * base : Common to all libata drivers.
1312 * sata : SATA controllers w/ native interface.
1313 * pmp : SATA controllers w/ PMP support.
1314 * sff : SFF ATA controllers w/o BMDMA support.
1315 * bmdma : SFF ATA controllers w/ BMDMA support.
1319 * BASE : Common to all libata drivers. The user must set
1320 * sg_tablesize and dma_boundary.
1321 * PIO : SFF ATA controllers w/ only PIO support.
1322 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1323 * dma_boundary are set to BMDMA limits.
1324 * NCQ : SATA controllers supporting NCQ. The user must set
1325 * sg_tablesize, dma_boundary and can_queue.
1327 extern const struct ata_port_operations ata_base_port_ops;
1328 extern const struct ata_port_operations sata_port_ops;
1329 extern struct device_attribute *ata_common_sdev_attrs[];
1331 #define ATA_BASE_SHT(drv_name) \
1332 .module = THIS_MODULE, \
1334 .ioctl = ata_scsi_ioctl, \
1335 .queuecommand = ata_scsi_queuecmd, \
1336 .can_queue = ATA_DEF_QUEUE, \
1337 .this_id = ATA_SHT_THIS_ID, \
1338 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1339 .emulated = ATA_SHT_EMULATED, \
1340 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1341 .proc_name = drv_name, \
1342 .slave_configure = ata_scsi_slave_config, \
1343 .slave_destroy = ata_scsi_slave_destroy, \
1344 .bios_param = ata_std_bios_param, \
1345 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1346 .sdev_attrs = ata_common_sdev_attrs
1348 #define ATA_NCQ_SHT(drv_name) \
1349 ATA_BASE_SHT(drv_name), \
1350 .change_queue_depth = ata_scsi_change_queue_depth
1355 #ifdef CONFIG_SATA_PMP
1356 static inline bool sata_pmp_supported(struct ata_port *ap)
1358 return ap->flags & ATA_FLAG_PMP;
1361 static inline bool sata_pmp_attached(struct ata_port *ap)
1363 return ap->nr_pmp_links != 0;
1366 static inline int ata_is_host_link(const struct ata_link *link)
1368 return link == &link->ap->link || link == link->ap->slave_link;
1370 #else /* CONFIG_SATA_PMP */
1371 static inline bool sata_pmp_supported(struct ata_port *ap)
1376 static inline bool sata_pmp_attached(struct ata_port *ap)
1381 static inline int ata_is_host_link(const struct ata_link *link)
1385 #endif /* CONFIG_SATA_PMP */
1387 static inline int sata_srst_pmp(struct ata_link *link)
1389 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1390 return SATA_PMP_CTRL_PORT;
1398 int ata_port_printk(const struct ata_port *ap, const char *level,
1399 const char *fmt, ...);
1401 int ata_link_printk(const struct ata_link *link, const char *level,
1402 const char *fmt, ...);
1404 int ata_dev_printk(const struct ata_device *dev, const char *level,
1405 const char *fmt, ...);
1407 #define ata_port_err(ap, fmt, ...) \
1408 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1409 #define ata_port_warn(ap, fmt, ...) \
1410 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1411 #define ata_port_notice(ap, fmt, ...) \
1412 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1413 #define ata_port_info(ap, fmt, ...) \
1414 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1415 #define ata_port_dbg(ap, fmt, ...) \
1416 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1418 #define ata_link_err(link, fmt, ...) \
1419 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1420 #define ata_link_warn(link, fmt, ...) \
1421 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1422 #define ata_link_notice(link, fmt, ...) \
1423 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1424 #define ata_link_info(link, fmt, ...) \
1425 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1426 #define ata_link_dbg(link, fmt, ...) \
1427 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1429 #define ata_dev_err(dev, fmt, ...) \
1430 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1431 #define ata_dev_warn(dev, fmt, ...) \
1432 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1433 #define ata_dev_notice(dev, fmt, ...) \
1434 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1435 #define ata_dev_info(dev, fmt, ...) \
1436 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1437 #define ata_dev_dbg(dev, fmt, ...) \
1438 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1440 void ata_print_version(const struct device *dev, const char *version);
1443 * ata_eh_info helpers
1445 extern __printf(2, 3)
1446 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1447 extern __printf(2, 3)
1448 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1449 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1451 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1453 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1454 ehi->flags |= ATA_EHI_HOTPLUGGED;
1455 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1456 ehi->err_mask |= AC_ERR_ATA_BUS;
1460 * port description helpers
1462 extern __printf(2, 3)
1463 void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1465 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1469 static inline unsigned int ata_tag_valid(unsigned int tag)
1471 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1474 static inline unsigned int ata_tag_internal(unsigned int tag)
1476 return tag == ATA_TAG_INTERNAL;
1482 static inline unsigned int ata_class_enabled(unsigned int class)
1484 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1485 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
1488 static inline unsigned int ata_class_disabled(unsigned int class)
1490 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1491 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
1494 static inline unsigned int ata_class_absent(unsigned int class)
1496 return !ata_class_enabled(class) && !ata_class_disabled(class);
1499 static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1501 return ata_class_enabled(dev->class);
1504 static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1506 return ata_class_disabled(dev->class);
1509 static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1511 return ata_class_absent(dev->class);
1517 static inline int ata_link_max_devices(const struct ata_link *link)
1519 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1524 static inline int ata_link_active(struct ata_link *link)
1526 return ata_tag_valid(link->active_tag) || link->sactive;
1532 * ATA_LITER_* constants are used to select link iteration mode and
1533 * ATA_DITER_* device iteration mode.
1535 * For a custom iteration directly using ata_{link|dev}_next(), if
1536 * @link or @dev, respectively, is NULL, the first element is
1537 * returned. @dev and @link can be any valid device or link and the
1538 * next element according to the iteration mode will be returned.
1539 * After the last element, NULL is returned.
1541 enum ata_link_iter_mode {
1542 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1543 * host link. no slave link */
1544 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1545 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1546 * slave link still comes after host link */
1549 enum ata_dev_iter_mode {
1551 ATA_DITER_ENABLED_REVERSE,
1553 ATA_DITER_ALL_REVERSE,
1556 extern struct ata_link *ata_link_next(struct ata_link *link,
1557 struct ata_port *ap,
1558 enum ata_link_iter_mode mode);
1560 extern struct ata_device *ata_dev_next(struct ata_device *dev,
1561 struct ata_link *link,
1562 enum ata_dev_iter_mode mode);
1565 * Shortcut notation for iterations
1567 * ata_for_each_link() iterates over each link of @ap according to
1568 * @mode. @link points to the current link in the loop. @link is
1569 * NULL after loop termination. ata_for_each_dev() works the same way
1570 * except that it iterates over each device of @link.
1572 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1573 * specified when using the following shorthand notations. Only the
1574 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1575 * specified. This not only increases brevity but also makes it
1576 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1578 #define ata_for_each_link(link, ap, mode) \
1579 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1580 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1582 #define ata_for_each_dev(dev, link, mode) \
1583 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1584 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1587 * ata_ncq_enabled - Test whether NCQ is enabled
1588 * @dev: ATA device to test for
1591 * spin_lock_irqsave(host lock)
1594 * 1 if NCQ is enabled for @dev, 0 otherwise.
1596 static inline int ata_ncq_enabled(struct ata_device *dev)
1598 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1599 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1602 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1604 qc->tf.ctl |= ATA_NIEN;
1607 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1610 if (likely(ata_tag_valid(tag)))
1611 return &ap->qcmd[tag];
1615 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1618 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1620 if (unlikely(!qc) || !ap->ops->error_handler)
1623 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1624 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1630 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1632 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1635 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1637 memset(tf, 0, sizeof(*tf));
1639 #ifdef CONFIG_ATA_SFF
1640 tf->ctl = dev->link->ap->ctl;
1642 tf->ctl = ATA_DEVCTL_OBS;
1644 if (dev->devno == 0)
1645 tf->device = ATA_DEVICE_OBS;
1647 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1650 static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1652 qc->dma_dir = DMA_NONE;
1657 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1660 qc->sect_size = ATA_SECT_SIZE;
1662 ata_tf_init(qc->dev, &qc->tf);
1664 /* init result_tf such that it indicates normal completion */
1665 qc->result_tf.command = ATA_DRDY;
1666 qc->result_tf.feature = 0;
1669 static inline int ata_try_flush_cache(const struct ata_device *dev)
1671 return ata_id_wcache_enabled(dev->id) ||
1672 ata_id_has_flush(dev->id) ||
1673 ata_id_has_flush_ext(dev->id);
1676 static inline unsigned int ac_err_mask(u8 status)
1678 if (status & (ATA_BUSY | ATA_DRQ))
1680 if (status & (ATA_ERR | ATA_DF))
1685 static inline unsigned int __ac_err_mask(u8 status)
1687 unsigned int mask = ac_err_mask(status);
1689 return AC_ERR_OTHER;
1693 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1695 return *(struct ata_port **)&host->hostdata[0];
1698 static inline int ata_check_ready(u8 status)
1700 if (!(status & ATA_BUSY))
1703 /* 0xff indicates either no device or device not ready */
1710 static inline unsigned long ata_deadline(unsigned long from_jiffies,
1711 unsigned long timeout_msecs)
1713 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1716 /* Don't open code these in drivers as there are traps. Firstly the range may
1717 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1718 > UDMA_0. Dyma ddreigiau */
1720 static inline int ata_using_mwdma(struct ata_device *adev)
1722 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1727 static inline int ata_using_udma(struct ata_device *adev)
1729 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1734 static inline int ata_dma_enabled(struct ata_device *adev)
1736 return (adev->dma_mode == 0xFF ? 0 : 1);
1739 /**************************************************************************
1740 * PMP - drivers/ata/libata-pmp.c
1742 #ifdef CONFIG_SATA_PMP
1744 extern const struct ata_port_operations sata_pmp_port_ops;
1746 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1747 extern void sata_pmp_error_handler(struct ata_port *ap);
1749 #else /* CONFIG_SATA_PMP */
1751 #define sata_pmp_port_ops sata_port_ops
1752 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1753 #define sata_pmp_error_handler ata_std_error_handler
1755 #endif /* CONFIG_SATA_PMP */
1758 /**************************************************************************
1759 * SFF - drivers/ata/libata-sff.c
1761 #ifdef CONFIG_ATA_SFF
1763 extern const struct ata_port_operations ata_sff_port_ops;
1764 extern const struct ata_port_operations ata_bmdma32_port_ops;
1766 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1767 #define ATA_PIO_SHT(drv_name) \
1768 ATA_BASE_SHT(drv_name), \
1769 .sg_tablesize = LIBATA_MAX_PRD, \
1770 .dma_boundary = ATA_DMA_BOUNDARY
1772 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1773 extern u8 ata_sff_check_status(struct ata_port *ap);
1774 extern void ata_sff_pause(struct ata_port *ap);
1775 extern void ata_sff_dma_pause(struct ata_port *ap);
1776 extern int ata_sff_busy_sleep(struct ata_port *ap,
1777 unsigned long timeout_pat, unsigned long timeout);
1778 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1779 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1780 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1781 extern void ata_sff_exec_command(struct ata_port *ap,
1782 const struct ata_taskfile *tf);
1783 extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
1784 unsigned char *buf, unsigned int buflen, int rw);
1785 extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1786 unsigned char *buf, unsigned int buflen, int rw);
1787 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
1788 unsigned char *buf, unsigned int buflen, int rw);
1789 extern void ata_sff_irq_on(struct ata_port *ap);
1790 extern void ata_sff_irq_clear(struct ata_port *ap);
1791 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1792 u8 status, int in_wq);
1793 extern void ata_sff_queue_work(struct work_struct *work);
1794 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1795 unsigned long delay);
1796 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1797 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1798 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1799 extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1800 struct ata_queued_cmd *qc);
1801 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1802 extern void ata_sff_lost_interrupt(struct ata_port *ap);
1803 extern void ata_sff_freeze(struct ata_port *ap);
1804 extern void ata_sff_thaw(struct ata_port *ap);
1805 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1806 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1808 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1809 unsigned long deadline);
1810 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1811 unsigned long deadline);
1812 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1813 unsigned long deadline);
1814 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1815 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1816 extern void ata_sff_error_handler(struct ata_port *ap);
1817 extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1819 extern int ata_pci_sff_init_host(struct ata_host *host);
1820 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1821 const struct ata_port_info * const * ppi,
1822 struct ata_host **r_host);
1823 extern int ata_pci_sff_activate_host(struct ata_host *host,
1824 irq_handler_t irq_handler,
1825 struct scsi_host_template *sht);
1826 extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1827 const struct ata_port_info * const * ppi,
1828 struct scsi_host_template *sht, void *host_priv, int hflags);
1829 #endif /* CONFIG_PCI */
1831 #ifdef CONFIG_ATA_BMDMA
1833 extern const struct ata_port_operations ata_bmdma_port_ops;
1835 #define ATA_BMDMA_SHT(drv_name) \
1836 ATA_BASE_SHT(drv_name), \
1837 .sg_tablesize = LIBATA_MAX_PRD, \
1838 .dma_boundary = ATA_DMA_BOUNDARY
1840 extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1841 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1842 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1843 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1844 struct ata_queued_cmd *qc);
1845 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1846 extern void ata_bmdma_error_handler(struct ata_port *ap);
1847 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1848 extern void ata_bmdma_irq_clear(struct ata_port *ap);
1849 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1850 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1851 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1852 extern u8 ata_bmdma_status(struct ata_port *ap);
1853 extern int ata_bmdma_port_start(struct ata_port *ap);
1854 extern int ata_bmdma_port_start32(struct ata_port *ap);
1857 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1858 extern void ata_pci_bmdma_init(struct ata_host *host);
1859 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1860 const struct ata_port_info * const * ppi,
1861 struct ata_host **r_host);
1862 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1863 const struct ata_port_info * const * ppi,
1864 struct scsi_host_template *sht,
1865 void *host_priv, int hflags);
1866 #endif /* CONFIG_PCI */
1867 #endif /* CONFIG_ATA_BMDMA */
1870 * ata_sff_busy_wait - Wait for a port status register
1871 * @ap: Port to wait for.
1872 * @bits: bits that must be clear
1873 * @max: number of 10uS waits to perform
1875 * Waits up to max*10 microseconds for the selected bits in the port's
1876 * status register to be cleared.
1877 * Returns final value of status register.
1880 * Inherited from caller.
1882 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1889 status = ap->ops->sff_check_status(ap);
1891 } while (status != 0xff && (status & bits) && (max > 0));
1897 * ata_wait_idle - Wait for a port to be idle.
1898 * @ap: Port to wait for.
1900 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1901 * Returns final value of status register.
1904 * Inherited from caller.
1906 static inline u8 ata_wait_idle(struct ata_port *ap)
1908 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1911 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1912 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1918 #endif /* CONFIG_ATA_SFF */
1920 #endif /* __LINUX_LIBATA_H__ */