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/driver-api/libata.rst
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>
41 #include <linux/async.h>
44 * Define if arch has non-standard setup. This is a _PCI_ standard
45 * not a legacy or ISA standard.
47 #ifdef CONFIG_ATA_NONSTANDARD
48 #include <asm/libata-portmap.h>
50 #define ATA_PRIMARY_IRQ(dev) 14
51 #define ATA_SECONDARY_IRQ(dev) 15
55 * compile-time options: to be removed as soon as all the drivers are
56 * converted to the new debugging mechanism
58 #undef ATA_DEBUG /* debugging output */
59 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
60 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
61 #undef ATA_NDEBUG /* define to disable quick runtime checks */
64 /* note: prints function name for you */
66 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
67 #ifdef ATA_VERBOSE_DEBUG
68 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
70 #define VPRINTK(fmt, args...)
71 #endif /* ATA_VERBOSE_DEBUG */
73 #define DPRINTK(fmt, args...)
74 #define VPRINTK(fmt, args...)
75 #endif /* ATA_DEBUG */
77 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
79 #define ata_print_version_once(dev, version) \
81 static bool __print_once; \
83 if (!__print_once) { \
84 __print_once = true; \
85 ata_print_version(dev, version); \
89 /* NEW: debug levels */
90 #define HAVE_LIBATA_MSG 1
94 ATA_MSG_INFO = 0x0002,
95 ATA_MSG_PROBE = 0x0004,
96 ATA_MSG_WARN = 0x0008,
97 ATA_MSG_MALLOC = 0x0010,
99 ATA_MSG_INTR = 0x0040,
100 ATA_MSG_ERR = 0x0080,
103 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
104 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
105 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
106 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
107 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
108 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
109 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
110 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
112 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
114 if (dval < 0 || dval >= (sizeof(u32) * 8))
115 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
118 return (1 << dval) - 1;
121 /* defines only for the constants which don't work well as enums */
122 #define ATA_TAG_POISON 0xfafbfcfdU
125 /* various global constants */
126 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
127 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
129 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
131 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
132 ATA_SHORT_PAUSE = 16,
134 ATAPI_MAX_DRAIN = 16 << 10,
136 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
138 ATA_SHT_EMULATED = 1,
139 ATA_SHT_THIS_ID = -1,
140 ATA_SHT_USE_CLUSTERING = 1,
142 /* struct ata_taskfile flags */
143 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
144 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
145 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
146 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
147 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
148 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
149 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
151 /* struct ata_device stuff */
152 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
153 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
154 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
155 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
156 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
157 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
158 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
159 ATA_DFLAG_AN = (1 << 7), /* AN configured */
160 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */
161 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
162 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
164 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
165 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
166 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
167 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
168 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
169 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
170 ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */
171 ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */
172 ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */
173 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
175 ATA_DFLAG_DETACH = (1 << 24),
176 ATA_DFLAG_DETACHED = (1 << 25),
178 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
179 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
180 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
181 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
182 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */
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_ZAC = 9, /* ZAC device */
194 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */
195 ATA_DEV_NONE = 11, /* no device */
197 /* struct ata_link flags */
198 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
199 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
200 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
201 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
202 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
203 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
204 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
205 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
206 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
207 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
208 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
209 ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */
211 /* struct ata_port flags */
212 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
213 /* (doesn't imply presence) */
214 ATA_FLAG_SATA = (1 << 1),
215 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */
216 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
217 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
218 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
219 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
220 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
221 * doesn't handle PIO interrupts */
222 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
223 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
224 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
225 ATA_FLAG_DEBUGMSG = (1 << 13),
226 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
227 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
228 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
229 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
230 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
231 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
232 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
233 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
235 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
237 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
238 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
240 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
243 /* struct ata_port pflags */
244 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
245 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
246 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
247 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
248 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
249 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
250 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
251 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
252 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
253 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
255 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
256 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
257 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
259 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
260 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
261 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
263 /* struct ata_queued_cmd flags */
264 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
265 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
266 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
267 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
268 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
269 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
270 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
272 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
273 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
274 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
277 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
278 ATA_HOST_STARTED = (1 << 1), /* Host started */
279 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
280 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
282 ATA_HOST_NO_PART = (1 << 4), /* Host does not support partial */
283 ATA_HOST_NO_SSC = (1 << 5), /* Host does not support slumber */
284 ATA_HOST_NO_DEVSLP = (1 << 6), /* Host does not support devslp */
286 /* bits 24:31 of host->flags are reserved for LLD specific flags */
288 /* various lengths of time */
289 ATA_TMOUT_BOOT = 30000, /* heuristic */
290 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
291 ATA_TMOUT_INTERNAL_QUICK = 5000,
292 ATA_TMOUT_MAX_PARK = 30000,
295 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
296 * is too much without parallel probing. Use 2s if parallel
297 * probing is available, 800ms otherwise.
299 ATA_TMOUT_FF_WAIT_LONG = 2000,
300 ATA_TMOUT_FF_WAIT = 800,
302 /* Spec mandates to wait for ">= 2ms" before checking status
303 * after reset. We wait 150ms, because that was the magic
304 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
305 * the period of time between when the ATA command register is
306 * written, and then status is checked. Because waiting for
307 * "a while" before checking status is fine, post SRST, we
308 * perform this magic delay here as well.
310 * Old drivers/ide uses the 2mS rule and then waits for ready.
312 ATA_WAIT_AFTER_RESET = 150,
314 /* If PMP is supported, we have to do follow-up SRST. As some
315 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
316 * advised to wait only for the following duration before
319 ATA_TMOUT_PMP_SRST_WAIT = 10000,
321 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
322 * be a spurious PHY event, so ignore the first PHY event that
323 * occurs within 10s after the policy change.
325 ATA_TMOUT_SPURIOUS_PHY = 10000,
339 /* SATA port states */
344 /* encoding various smaller bitmaps into a single
345 * unsigned long bitmap
347 ATA_NR_PIO_MODES = 7,
348 ATA_NR_MWDMA_MODES = 5,
349 ATA_NR_UDMA_MODES = 8,
352 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
353 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
357 /* size of buffer to pad xfers ending on unaligned boundaries */
363 /* return values for ->qc_defer */
367 /* desc_len for ata_eh_info and context */
368 ATA_EH_DESC_LEN = 80,
370 /* reset / recovery action types */
371 ATA_EH_REVALIDATE = (1 << 0),
372 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
373 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
374 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
375 ATA_EH_ENABLE_LINK = (1 << 3),
376 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
378 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
379 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
382 /* ata_eh_info->flags */
383 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
384 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
385 ATA_EHI_QUIET = (1 << 3), /* be quiet */
386 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
388 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
389 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
390 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
391 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
392 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
394 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
396 /* mask of flags to transfer *to* the slave link */
397 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
399 /* max tries if error condition is still set after ->error_handler */
400 ATA_EH_MAX_TRIES = 5,
402 /* sometimes resuming a link requires several retries */
403 ATA_LINK_RESUME_TRIES = 5,
405 /* how hard are we gonna try to probe/recover devices */
406 ATA_PROBE_MAX_TRIES = 3,
407 ATA_EH_DEV_TRIES = 3,
408 ATA_EH_PMP_TRIES = 5,
409 ATA_EH_PMP_LINK_TRIES = 3,
411 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
413 /* This should match the actual table size of
414 * ata_eh_cmd_timeout_table in libata-eh.c.
416 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7,
418 /* Horkage types. May be set by libata or controller on drives
419 (some horkage may be drive/controller pair dependent */
421 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
422 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
423 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
424 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
425 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
426 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
427 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
428 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
429 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
430 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
431 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
432 not multiple of 16 bytes */
433 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
434 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
435 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
436 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
437 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
438 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
439 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
440 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
441 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
442 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
443 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
444 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */
445 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
446 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
447 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */
448 ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */
450 /* DMA mask for user DMA control: User visible values; DO NOT
452 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
453 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
454 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
456 /* ATAPI command types */
457 ATAPI_READ = 0, /* READs */
458 ATAPI_WRITE = 1, /* WRITEs */
459 ATAPI_READ_CD = 2, /* READ CD [MSF] */
460 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
461 ATAPI_MISC = 4, /* the rest */
463 /* Timing constants */
464 ATA_TIMING_SETUP = (1 << 0),
465 ATA_TIMING_ACT8B = (1 << 1),
466 ATA_TIMING_REC8B = (1 << 2),
467 ATA_TIMING_CYC8B = (1 << 3),
468 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
470 ATA_TIMING_ACTIVE = (1 << 4),
471 ATA_TIMING_RECOVER = (1 << 5),
472 ATA_TIMING_DMACK_HOLD = (1 << 6),
473 ATA_TIMING_CYCLE = (1 << 7),
474 ATA_TIMING_UDMA = (1 << 8),
475 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
476 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
477 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
478 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
482 ATA_ACPI_FILTER_SETXFER = 1 << 0,
483 ATA_ACPI_FILTER_LOCK = 1 << 1,
484 ATA_ACPI_FILTER_DIPM = 1 << 2,
485 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
486 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
488 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
489 ATA_ACPI_FILTER_LOCK |
490 ATA_ACPI_FILTER_DIPM,
494 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
496 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
498 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
502 enum hsm_task_states {
503 HSM_ST_IDLE, /* no command on going */
504 HSM_ST_FIRST, /* (waiting the device to)
505 write CDB or first data block */
506 HSM_ST, /* (waiting the device to) transfer data */
507 HSM_ST_LAST, /* (waiting the device to) complete command */
508 HSM_ST_ERR, /* error */
511 enum ata_completion_errors {
512 AC_ERR_OK = 0, /* no error */
513 AC_ERR_DEV = (1 << 0), /* device reported error */
514 AC_ERR_HSM = (1 << 1), /* host state machine violation */
515 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
516 AC_ERR_MEDIA = (1 << 3), /* media error */
517 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
518 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
519 AC_ERR_SYSTEM = (1 << 6), /* system error */
520 AC_ERR_INVALID = (1 << 7), /* invalid argument */
521 AC_ERR_OTHER = (1 << 8), /* unknown */
522 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
523 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
527 * Link power management policy: If you alter this, you also need to
528 * alter libata-scsi.c (for the ascii descriptions)
530 enum ata_lpm_policy {
538 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
539 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
540 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */
543 /* forward declarations */
545 struct ata_port_operations;
548 struct ata_queued_cmd;
551 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
552 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
553 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
554 unsigned long deadline);
555 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
557 extern struct device_attribute dev_attr_link_power_management_policy;
558 extern struct device_attribute dev_attr_unload_heads;
559 extern struct device_attribute dev_attr_ncq_prio_enable;
560 extern struct device_attribute dev_attr_em_message_type;
561 extern struct device_attribute dev_attr_em_message;
562 extern struct device_attribute dev_attr_sw_activity;
570 struct ata_taskfile {
571 unsigned long flags; /* ATA_TFLAG_xxx */
572 u8 protocol; /* ATA_PROT_xxx */
574 u8 ctl; /* control reg */
576 u8 hob_feature; /* additional data */
577 u8 hob_nsect; /* to support LBA48 */
590 u8 command; /* IO operation */
592 u32 auxiliary; /* auxiliary field */
593 /* from SATA 3.1 and */
597 #ifdef CONFIG_ATA_SFF
599 void __iomem *cmd_addr;
600 void __iomem *data_addr;
601 void __iomem *error_addr;
602 void __iomem *feature_addr;
603 void __iomem *nsect_addr;
604 void __iomem *lbal_addr;
605 void __iomem *lbam_addr;
606 void __iomem *lbah_addr;
607 void __iomem *device_addr;
608 void __iomem *status_addr;
609 void __iomem *command_addr;
610 void __iomem *altstatus_addr;
611 void __iomem *ctl_addr;
612 #ifdef CONFIG_ATA_BMDMA
613 void __iomem *bmdma_addr;
614 #endif /* CONFIG_ATA_BMDMA */
615 void __iomem *scr_addr;
617 #endif /* CONFIG_ATA_SFF */
622 void __iomem * const *iomap;
623 unsigned int n_ports;
624 unsigned int n_tags; /* nr of NCQ tags */
626 struct ata_port_operations *ops;
629 struct mutex eh_mutex;
630 struct task_struct *eh_owner;
632 struct ata_port *simplex_claimed; /* channel owning the DMA */
633 struct ata_port *ports[0];
636 struct ata_queued_cmd {
638 struct ata_device *dev;
640 struct scsi_cmnd *scsicmd;
641 void (*scsidone)(struct scsi_cmnd *);
643 struct ata_taskfile tf;
644 u8 cdb[ATAPI_CDB_LEN];
646 unsigned long flags; /* ATA_QCFLAG_xxx */
649 unsigned int orig_n_elem;
653 unsigned int sect_size;
656 unsigned int extrabytes;
657 unsigned int curbytes;
659 struct scatterlist sgent;
661 struct scatterlist *sg;
663 struct scatterlist *cursg;
664 unsigned int cursg_ofs;
666 unsigned int err_mask;
667 struct ata_taskfile result_tf;
668 ata_qc_cb_t complete_fn;
674 struct ata_port_stats {
675 unsigned long unhandled_irq;
676 unsigned long idle_irq;
677 unsigned long rw_reqbuf;
680 struct ata_ering_entry {
682 unsigned int err_mask;
688 struct ata_ering_entry ring[ATA_ERING_SIZE];
692 struct ata_link *link;
693 unsigned int devno; /* 0 or 1 */
694 unsigned int horkage; /* List of broken features */
695 unsigned long flags; /* ATA_DFLAG_xxx */
696 struct scsi_device *sdev; /* attached SCSI device */
698 #ifdef CONFIG_ATA_ACPI
699 union acpi_object *gtf_cache;
700 unsigned int gtf_filter;
702 #ifdef CONFIG_SATA_ZPODD
706 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
707 u64 n_sectors; /* size of device, if ATA */
708 u64 n_native_sectors; /* native size, if ATA */
709 unsigned int class; /* ATA_DEV_xxx */
710 unsigned long unpark_deadline;
715 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
717 unsigned int multi_count; /* sectors count for
718 READ/WRITE MULTIPLE */
719 unsigned int max_sectors; /* per-device max sectors */
720 unsigned int cdb_len;
722 /* per-dev xfer mask */
723 unsigned long pio_mask;
724 unsigned long mwdma_mask;
725 unsigned long udma_mask;
727 /* for CHS addressing */
728 u16 cylinders; /* Number of cylinders */
729 u16 heads; /* Number of heads */
730 u16 sectors; /* Number of sectors per track */
733 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
734 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
735 } ____cacheline_aligned;
737 /* DEVSLP Timing Variables from Identify Device Data Log */
738 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
740 /* NCQ send and receive log subcommand support */
741 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
742 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
744 /* ZAC zone configuration */
746 u32 zac_zones_optimal_open;
747 u32 zac_zones_optimal_nonseq;
748 u32 zac_zones_max_open;
752 /* ering is CLEAR_END, read comment above CLEAR_END */
753 struct ata_ering ering;
756 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
757 * cleared to zero on ata_dev_init().
759 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
760 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
763 struct ata_device *dev; /* offending device */
764 u32 serror; /* SError from LLDD */
765 unsigned int err_mask; /* port-wide err_mask */
766 unsigned int action; /* ATA_EH_* action mask */
767 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
768 unsigned int flags; /* ATA_EHI_* flags */
770 unsigned int probe_mask;
772 char desc[ATA_EH_DESC_LEN];
776 struct ata_eh_context {
777 struct ata_eh_info i;
778 int tries[ATA_MAX_DEVICES];
779 int cmd_timeout_idx[ATA_MAX_DEVICES]
780 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
781 unsigned int classes[ATA_MAX_DEVICES];
782 unsigned int did_probe_mask;
783 unsigned int unloaded_mask;
784 unsigned int saved_ncq_enabled;
785 u8 saved_xfer_mode[ATA_MAX_DEVICES];
786 /* timestamp for the last reset attempt or success */
787 unsigned long last_reset;
790 struct ata_acpi_drive
796 struct ata_acpi_gtm {
797 struct ata_acpi_drive drive[2];
803 int pmp; /* port multiplier port # */
806 unsigned int active_tag; /* active tag on this link */
807 u32 sactive; /* active NCQ commands */
809 unsigned int flags; /* ATA_LFLAG_xxx */
811 u32 saved_scontrol; /* SControl on probe */
812 unsigned int hw_sata_spd_limit;
813 unsigned int sata_spd_limit;
814 unsigned int sata_spd; /* current SATA PHY speed */
815 enum ata_lpm_policy lpm_policy;
817 /* record runtime error info, protected by host_set lock */
818 struct ata_eh_info eh_info;
820 struct ata_eh_context eh_context;
822 struct ata_device device[ATA_MAX_DEVICES];
824 unsigned long last_lpm_change; /* when last LPM change happened */
826 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
827 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
830 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
831 struct ata_port_operations *ops;
833 /* Flags owned by the EH context. Only EH should touch these once the
835 unsigned long flags; /* ATA_FLAG_xxx */
836 /* Flags that change dynamically, protected by ap->lock */
837 unsigned int pflags; /* ATA_PFLAG_xxx */
838 unsigned int print_id; /* user visible unique port ID */
839 unsigned int local_port_no; /* host local port num */
840 unsigned int port_no; /* 0 based port no. inside the host */
842 #ifdef CONFIG_ATA_SFF
843 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
844 u8 ctl; /* cache of ATA control register */
845 u8 last_ctl; /* Cache last written value */
846 struct ata_link* sff_pio_task_link; /* link currently used */
847 struct delayed_work sff_pio_task;
848 #ifdef CONFIG_ATA_BMDMA
849 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
850 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
851 #endif /* CONFIG_ATA_BMDMA */
852 #endif /* CONFIG_ATA_SFF */
854 unsigned int pio_mask;
855 unsigned int mwdma_mask;
856 unsigned int udma_mask;
857 unsigned int cbl; /* cable type; ATA_CBL_xxx */
859 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
860 unsigned long sas_tag_allocated; /* for sas tag allocation only */
861 unsigned int qc_active;
862 int nr_active_links; /* #links with active qcs */
863 unsigned int sas_last_tag; /* track next tag hw expects */
865 struct ata_link link; /* host default link */
866 struct ata_link *slave_link; /* see ata_slave_link_init() */
868 int nr_pmp_links; /* nr of available PMP links */
869 struct ata_link *pmp_link; /* array of PMP links */
870 struct ata_link *excl_link; /* for PMP qc exclusion */
872 struct ata_port_stats stats;
873 struct ata_host *host;
877 struct mutex scsi_scan_mutex;
878 struct delayed_work hotplug_task;
879 struct work_struct scsi_rescan_task;
881 unsigned int hsm_task_state;
884 struct list_head eh_done_q;
885 wait_queue_head_t eh_wait_q;
887 struct completion park_req_pending;
889 pm_message_t pm_mesg;
890 enum ata_lpm_policy target_lpm_policy;
892 struct timer_list fastdrain_timer;
893 unsigned long fastdrain_cnt;
895 async_cookie_t cookie;
900 #ifdef CONFIG_ATA_ACPI
901 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
904 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
907 /* The following initializer overrides a method to NULL whether one of
908 * its parent has the method defined or not. This is equivalent to
909 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
910 * expression and thus can't be used as an initializer.
912 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
914 struct ata_port_operations {
918 int (*qc_defer)(struct ata_queued_cmd *qc);
919 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
920 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
921 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
922 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
925 * Configuration and exception handling
927 int (*cable_detect)(struct ata_port *ap);
928 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
929 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
930 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
931 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
932 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
934 void (*dev_config)(struct ata_device *dev);
936 void (*freeze)(struct ata_port *ap);
937 void (*thaw)(struct ata_port *ap);
938 ata_prereset_fn_t prereset;
939 ata_reset_fn_t softreset;
940 ata_reset_fn_t hardreset;
941 ata_postreset_fn_t postreset;
942 ata_prereset_fn_t pmp_prereset;
943 ata_reset_fn_t pmp_softreset;
944 ata_reset_fn_t pmp_hardreset;
945 ata_postreset_fn_t pmp_postreset;
946 void (*error_handler)(struct ata_port *ap);
947 void (*lost_interrupt)(struct ata_port *ap);
948 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
949 void (*sched_eh)(struct ata_port *ap);
950 void (*end_eh)(struct ata_port *ap);
955 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
956 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
957 void (*pmp_attach)(struct ata_port *ap);
958 void (*pmp_detach)(struct ata_port *ap);
959 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
963 * Start, stop, suspend and resume
965 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
966 int (*port_resume)(struct ata_port *ap);
967 int (*port_start)(struct ata_port *ap);
968 void (*port_stop)(struct ata_port *ap);
969 void (*host_stop)(struct ata_host *host);
971 #ifdef CONFIG_ATA_SFF
973 * SFF / taskfile oriented ops
975 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
976 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
977 u8 (*sff_check_status)(struct ata_port *ap);
978 u8 (*sff_check_altstatus)(struct ata_port *ap);
979 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
980 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
981 void (*sff_exec_command)(struct ata_port *ap,
982 const struct ata_taskfile *tf);
983 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
984 unsigned char *buf, unsigned int buflen, int rw);
985 void (*sff_irq_on)(struct ata_port *);
986 bool (*sff_irq_check)(struct ata_port *);
987 void (*sff_irq_clear)(struct ata_port *);
988 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
990 #ifdef CONFIG_ATA_BMDMA
991 void (*bmdma_setup)(struct ata_queued_cmd *qc);
992 void (*bmdma_start)(struct ata_queued_cmd *qc);
993 void (*bmdma_stop)(struct ata_queued_cmd *qc);
994 u8 (*bmdma_status)(struct ata_port *ap);
995 #endif /* CONFIG_ATA_BMDMA */
996 #endif /* CONFIG_ATA_SFF */
998 ssize_t (*em_show)(struct ata_port *ap, char *buf);
999 ssize_t (*em_store)(struct ata_port *ap, const char *message,
1001 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
1002 ssize_t (*sw_activity_store)(struct ata_device *dev,
1003 enum sw_activity val);
1004 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
1010 void (*phy_reset)(struct ata_port *ap);
1011 void (*eng_timeout)(struct ata_port *ap);
1014 * ->inherits must be the last field and all the preceding
1015 * fields must be pointers.
1017 const struct ata_port_operations *inherits;
1020 struct ata_port_info {
1021 unsigned long flags;
1022 unsigned long link_flags;
1023 unsigned long pio_mask;
1024 unsigned long mwdma_mask;
1025 unsigned long udma_mask;
1026 struct ata_port_operations *port_ops;
1031 unsigned short mode; /* ATA mode */
1032 unsigned short setup; /* t1 */
1033 unsigned short act8b; /* t2 for 8-bit I/O */
1034 unsigned short rec8b; /* t2i for 8-bit I/O */
1035 unsigned short cyc8b; /* t0 for 8-bit I/O */
1036 unsigned short active; /* t2 or tD */
1037 unsigned short recover; /* t2i or tK */
1038 unsigned short dmack_hold; /* tj */
1039 unsigned short cycle; /* t0 */
1040 unsigned short udma; /* t2CYCTYP/2 */
1044 * Core layer - drivers/ata/libata-core.c
1046 extern const unsigned long sata_deb_timing_normal[];
1047 extern const unsigned long sata_deb_timing_hotplug[];
1048 extern const unsigned long sata_deb_timing_long[];
1050 extern struct ata_port_operations ata_dummy_port_ops;
1051 extern const struct ata_port_info ata_dummy_port_info;
1053 static inline bool ata_is_atapi(u8 prot)
1055 return prot & ATA_PROT_FLAG_ATAPI;
1058 static inline bool ata_is_pio(u8 prot)
1060 return prot & ATA_PROT_FLAG_PIO;
1063 static inline bool ata_is_dma(u8 prot)
1065 return prot & ATA_PROT_FLAG_DMA;
1068 static inline bool ata_is_ncq(u8 prot)
1070 return prot & ATA_PROT_FLAG_NCQ;
1073 static inline bool ata_is_data(u8 prot)
1075 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1078 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1080 return (tf->command == ATA_CMD_READ_MULTI) ||
1081 (tf->command == ATA_CMD_WRITE_MULTI) ||
1082 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1083 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1084 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1087 static inline const unsigned long *
1088 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1090 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1091 return sata_deb_timing_hotplug;
1093 return sata_deb_timing_normal;
1096 static inline int ata_port_is_dummy(struct ata_port *ap)
1098 return ap->ops == &ata_dummy_port_ops;
1101 extern int sata_set_spd(struct ata_link *link);
1102 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1103 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1104 int (*check_ready)(struct ata_link *link));
1105 extern int sata_link_debounce(struct ata_link *link,
1106 const unsigned long *params, unsigned long deadline);
1107 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1108 unsigned long deadline);
1109 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1111 extern int sata_link_hardreset(struct ata_link *link,
1112 const unsigned long *timing, unsigned long deadline,
1113 bool *online, int (*check_ready)(struct ata_link *));
1114 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1115 unsigned long deadline);
1116 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1118 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1119 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1120 const struct ata_port_info * const * ppi, int n_ports);
1121 extern int ata_slave_link_init(struct ata_port *ap);
1122 extern int ata_host_start(struct ata_host *host);
1123 extern int ata_host_register(struct ata_host *host,
1124 struct scsi_host_template *sht);
1125 extern int ata_host_activate(struct ata_host *host, int irq,
1126 irq_handler_t irq_handler, unsigned long irq_flags,
1127 struct scsi_host_template *sht);
1128 extern void ata_host_detach(struct ata_host *host);
1129 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1130 extern int ata_scsi_detect(struct scsi_host_template *sht);
1131 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
1132 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1133 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1134 int cmd, void __user *arg);
1135 extern void ata_sas_port_destroy(struct ata_port *);
1136 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1137 struct ata_port_info *, struct Scsi_Host *);
1138 extern void ata_sas_async_probe(struct ata_port *ap);
1139 extern int ata_sas_sync_probe(struct ata_port *ap);
1140 extern int ata_sas_port_init(struct ata_port *);
1141 extern int ata_sas_port_start(struct ata_port *ap);
1142 extern void ata_sas_port_stop(struct ata_port *ap);
1143 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1144 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1145 extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
1146 extern int sata_scr_valid(struct ata_link *link);
1147 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1148 extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1149 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1150 extern bool ata_link_online(struct ata_link *link);
1151 extern bool ata_link_offline(struct ata_link *link);
1153 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1154 extern void ata_host_resume(struct ata_host *host);
1155 extern void ata_sas_port_suspend(struct ata_port *ap);
1156 extern void ata_sas_port_resume(struct ata_port *ap);
1158 static inline void ata_sas_port_suspend(struct ata_port *ap)
1161 static inline void ata_sas_port_resume(struct ata_port *ap)
1165 extern int ata_ratelimit(void);
1166 extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1167 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1168 u32 val, unsigned long interval, unsigned long timeout);
1169 extern int atapi_cmd_type(u8 opcode);
1170 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1171 u8 pmp, int is_cmd, u8 *fis);
1172 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1173 extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1174 unsigned long mwdma_mask, unsigned long udma_mask);
1175 extern void ata_unpack_xfermask(unsigned long xfer_mask,
1176 unsigned long *pio_mask, unsigned long *mwdma_mask,
1177 unsigned long *udma_mask);
1178 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1179 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1180 extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1181 extern const char *ata_mode_string(unsigned long xfer_mask);
1182 extern unsigned long ata_id_xfermask(const u16 *id);
1183 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1184 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
1185 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1186 unsigned int n_elem);
1187 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1188 extern void ata_dev_disable(struct ata_device *adev);
1189 extern void ata_id_string(const u16 *id, unsigned char *s,
1190 unsigned int ofs, unsigned int len);
1191 extern void ata_id_c_string(const u16 *id, unsigned char *s,
1192 unsigned int ofs, unsigned int len);
1193 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1194 struct ata_taskfile *tf, u16 *id);
1195 extern void ata_qc_complete(struct ata_queued_cmd *qc);
1196 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1197 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1198 extern int ata_std_bios_param(struct scsi_device *sdev,
1199 struct block_device *bdev,
1200 sector_t capacity, int geom[]);
1201 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1202 extern int ata_scsi_slave_config(struct scsi_device *sdev);
1203 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1204 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1206 extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1208 extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1209 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1210 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1211 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1212 extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1214 extern int ata_cable_40wire(struct ata_port *ap);
1215 extern int ata_cable_80wire(struct ata_port *ap);
1216 extern int ata_cable_sata(struct ata_port *ap);
1217 extern int ata_cable_ignore(struct ata_port *ap);
1218 extern int ata_cable_unknown(struct ata_port *ap);
1220 /* Timing helpers */
1221 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1222 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1223 extern int ata_timing_compute(struct ata_device *, unsigned short,
1224 struct ata_timing *, int, int);
1225 extern void ata_timing_merge(const struct ata_timing *,
1226 const struct ata_timing *, struct ata_timing *,
1228 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1235 unsigned int reg; /* PCI config register to read */
1236 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1241 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1242 extern void ata_pci_shutdown_one(struct pci_dev *pdev);
1243 extern void ata_pci_remove_one(struct pci_dev *pdev);
1246 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1247 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1248 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1249 extern int ata_pci_device_resume(struct pci_dev *pdev);
1250 #endif /* CONFIG_PM */
1251 #endif /* CONFIG_PCI */
1253 struct platform_device;
1255 extern int ata_platform_remove_one(struct platform_device *pdev);
1258 * ACPI - drivers/ata/libata-acpi.c
1260 #ifdef CONFIG_ATA_ACPI
1261 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1263 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1264 return &ap->__acpi_init_gtm;
1267 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1268 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1269 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1270 const struct ata_acpi_gtm *gtm);
1271 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1273 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1278 static inline int ata_acpi_stm(const struct ata_port *ap,
1279 struct ata_acpi_gtm *stm)
1284 static inline int ata_acpi_gtm(const struct ata_port *ap,
1285 struct ata_acpi_gtm *stm)
1290 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1291 const struct ata_acpi_gtm *gtm)
1296 static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1297 const struct ata_acpi_gtm *gtm)
1304 * EH - drivers/ata/libata-eh.c
1306 extern void ata_port_schedule_eh(struct ata_port *ap);
1307 extern void ata_port_wait_eh(struct ata_port *ap);
1308 extern int ata_link_abort(struct ata_link *link);
1309 extern int ata_port_abort(struct ata_port *ap);
1310 extern int ata_port_freeze(struct ata_port *ap);
1311 extern int sata_async_notification(struct ata_port *ap);
1313 extern void ata_eh_freeze_port(struct ata_port *ap);
1314 extern void ata_eh_thaw_port(struct ata_port *ap);
1316 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1317 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1318 extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1320 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1321 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1322 ata_postreset_fn_t postreset);
1323 extern void ata_std_error_handler(struct ata_port *ap);
1324 extern void ata_std_sched_eh(struct ata_port *ap);
1325 extern void ata_std_end_eh(struct ata_port *ap);
1326 extern int ata_link_nr_enabled(struct ata_link *link);
1329 * Base operations to inherit from and initializers for sht
1333 * base : Common to all libata drivers.
1334 * sata : SATA controllers w/ native interface.
1335 * pmp : SATA controllers w/ PMP support.
1336 * sff : SFF ATA controllers w/o BMDMA support.
1337 * bmdma : SFF ATA controllers w/ BMDMA support.
1341 * BASE : Common to all libata drivers. The user must set
1342 * sg_tablesize and dma_boundary.
1343 * PIO : SFF ATA controllers w/ only PIO support.
1344 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1345 * dma_boundary are set to BMDMA limits.
1346 * NCQ : SATA controllers supporting NCQ. The user must set
1347 * sg_tablesize, dma_boundary and can_queue.
1349 extern const struct ata_port_operations ata_base_port_ops;
1350 extern const struct ata_port_operations sata_port_ops;
1351 extern struct device_attribute *ata_common_sdev_attrs[];
1354 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1355 * by the edge drivers. Because the 'module' field of sht must be the
1356 * edge driver's module reference, otherwise the driver can be unloaded
1357 * even if the scsi_device is being accessed.
1359 #define ATA_BASE_SHT(drv_name) \
1360 .module = THIS_MODULE, \
1362 .ioctl = ata_scsi_ioctl, \
1363 .queuecommand = ata_scsi_queuecmd, \
1364 .can_queue = ATA_DEF_QUEUE, \
1365 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1366 .this_id = ATA_SHT_THIS_ID, \
1367 .emulated = ATA_SHT_EMULATED, \
1368 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1369 .proc_name = drv_name, \
1370 .slave_configure = ata_scsi_slave_config, \
1371 .slave_destroy = ata_scsi_slave_destroy, \
1372 .eh_timed_out = ata_scsi_timed_out, \
1373 .bios_param = ata_std_bios_param, \
1374 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1375 .sdev_attrs = ata_common_sdev_attrs
1377 #define ATA_NCQ_SHT(drv_name) \
1378 ATA_BASE_SHT(drv_name), \
1379 .change_queue_depth = ata_scsi_change_queue_depth
1384 #ifdef CONFIG_SATA_PMP
1385 static inline bool sata_pmp_supported(struct ata_port *ap)
1387 return ap->flags & ATA_FLAG_PMP;
1390 static inline bool sata_pmp_attached(struct ata_port *ap)
1392 return ap->nr_pmp_links != 0;
1395 static inline bool ata_is_host_link(const struct ata_link *link)
1397 return link == &link->ap->link || link == link->ap->slave_link;
1399 #else /* CONFIG_SATA_PMP */
1400 static inline bool sata_pmp_supported(struct ata_port *ap)
1405 static inline bool sata_pmp_attached(struct ata_port *ap)
1410 static inline bool ata_is_host_link(const struct ata_link *link)
1414 #endif /* CONFIG_SATA_PMP */
1416 static inline int sata_srst_pmp(struct ata_link *link)
1418 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1419 return SATA_PMP_CTRL_PORT;
1427 void ata_port_printk(const struct ata_port *ap, const char *level,
1428 const char *fmt, ...);
1430 void ata_link_printk(const struct ata_link *link, const char *level,
1431 const char *fmt, ...);
1433 void ata_dev_printk(const struct ata_device *dev, const char *level,
1434 const char *fmt, ...);
1436 #define ata_port_err(ap, fmt, ...) \
1437 ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
1438 #define ata_port_warn(ap, fmt, ...) \
1439 ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
1440 #define ata_port_notice(ap, fmt, ...) \
1441 ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
1442 #define ata_port_info(ap, fmt, ...) \
1443 ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
1444 #define ata_port_dbg(ap, fmt, ...) \
1445 ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
1447 #define ata_link_err(link, fmt, ...) \
1448 ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
1449 #define ata_link_warn(link, fmt, ...) \
1450 ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
1451 #define ata_link_notice(link, fmt, ...) \
1452 ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
1453 #define ata_link_info(link, fmt, ...) \
1454 ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
1455 #define ata_link_dbg(link, fmt, ...) \
1456 ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
1458 #define ata_dev_err(dev, fmt, ...) \
1459 ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
1460 #define ata_dev_warn(dev, fmt, ...) \
1461 ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
1462 #define ata_dev_notice(dev, fmt, ...) \
1463 ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
1464 #define ata_dev_info(dev, fmt, ...) \
1465 ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
1466 #define ata_dev_dbg(dev, fmt, ...) \
1467 ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
1469 void ata_print_version(const struct device *dev, const char *version);
1472 * ata_eh_info helpers
1474 extern __printf(2, 3)
1475 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1476 extern __printf(2, 3)
1477 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1478 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1480 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1482 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1483 ehi->flags |= ATA_EHI_HOTPLUGGED;
1484 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1485 ehi->err_mask |= AC_ERR_ATA_BUS;
1489 * port description helpers
1491 extern __printf(2, 3)
1492 void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1494 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1498 static inline unsigned int ata_tag_valid(unsigned int tag)
1500 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1503 static inline unsigned int ata_tag_internal(unsigned int tag)
1505 return tag == ATA_TAG_INTERNAL;
1511 static inline unsigned int ata_class_enabled(unsigned int class)
1513 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1514 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1515 class == ATA_DEV_ZAC;
1518 static inline unsigned int ata_class_disabled(unsigned int class)
1520 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1521 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1522 class == ATA_DEV_ZAC_UNSUP;
1525 static inline unsigned int ata_class_absent(unsigned int class)
1527 return !ata_class_enabled(class) && !ata_class_disabled(class);
1530 static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1532 return ata_class_enabled(dev->class);
1535 static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1537 return ata_class_disabled(dev->class);
1540 static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1542 return ata_class_absent(dev->class);
1548 static inline int ata_link_max_devices(const struct ata_link *link)
1550 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1555 static inline int ata_link_active(struct ata_link *link)
1557 return ata_tag_valid(link->active_tag) || link->sactive;
1563 * ATA_LITER_* constants are used to select link iteration mode and
1564 * ATA_DITER_* device iteration mode.
1566 * For a custom iteration directly using ata_{link|dev}_next(), if
1567 * @link or @dev, respectively, is NULL, the first element is
1568 * returned. @dev and @link can be any valid device or link and the
1569 * next element according to the iteration mode will be returned.
1570 * After the last element, NULL is returned.
1572 enum ata_link_iter_mode {
1573 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1574 * host link. no slave link */
1575 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1576 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1577 * slave link still comes after host link */
1580 enum ata_dev_iter_mode {
1582 ATA_DITER_ENABLED_REVERSE,
1584 ATA_DITER_ALL_REVERSE,
1587 extern struct ata_link *ata_link_next(struct ata_link *link,
1588 struct ata_port *ap,
1589 enum ata_link_iter_mode mode);
1591 extern struct ata_device *ata_dev_next(struct ata_device *dev,
1592 struct ata_link *link,
1593 enum ata_dev_iter_mode mode);
1596 * Shortcut notation for iterations
1598 * ata_for_each_link() iterates over each link of @ap according to
1599 * @mode. @link points to the current link in the loop. @link is
1600 * NULL after loop termination. ata_for_each_dev() works the same way
1601 * except that it iterates over each device of @link.
1603 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1604 * specified when using the following shorthand notations. Only the
1605 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1606 * specified. This not only increases brevity but also makes it
1607 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1609 #define ata_for_each_link(link, ap, mode) \
1610 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1611 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1613 #define ata_for_each_dev(dev, link, mode) \
1614 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1615 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1618 * ata_ncq_enabled - Test whether NCQ is enabled
1619 * @dev: ATA device to test for
1622 * spin_lock_irqsave(host lock)
1625 * 1 if NCQ is enabled for @dev, 0 otherwise.
1627 static inline int ata_ncq_enabled(struct ata_device *dev)
1629 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1630 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1633 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1635 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1636 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1637 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1640 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1642 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1643 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1644 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1647 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1649 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1650 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1651 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1654 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1656 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1657 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1660 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1662 qc->tf.ctl |= ATA_NIEN;
1665 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1668 if (likely(ata_tag_valid(tag)))
1669 return &ap->qcmd[tag];
1673 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1676 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1678 if (unlikely(!qc) || !ap->ops->error_handler)
1681 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1682 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1688 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1690 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1693 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1695 memset(tf, 0, sizeof(*tf));
1697 #ifdef CONFIG_ATA_SFF
1698 tf->ctl = dev->link->ap->ctl;
1700 tf->ctl = ATA_DEVCTL_OBS;
1702 if (dev->devno == 0)
1703 tf->device = ATA_DEVICE_OBS;
1705 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1708 static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1710 qc->dma_dir = DMA_NONE;
1715 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1718 qc->sect_size = ATA_SECT_SIZE;
1720 ata_tf_init(qc->dev, &qc->tf);
1722 /* init result_tf such that it indicates normal completion */
1723 qc->result_tf.command = ATA_DRDY;
1724 qc->result_tf.feature = 0;
1727 static inline int ata_try_flush_cache(const struct ata_device *dev)
1729 return ata_id_wcache_enabled(dev->id) ||
1730 ata_id_has_flush(dev->id) ||
1731 ata_id_has_flush_ext(dev->id);
1734 static inline unsigned int ac_err_mask(u8 status)
1736 if (status & (ATA_BUSY | ATA_DRQ))
1738 if (status & (ATA_ERR | ATA_DF))
1743 static inline unsigned int __ac_err_mask(u8 status)
1745 unsigned int mask = ac_err_mask(status);
1747 return AC_ERR_OTHER;
1751 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1753 return *(struct ata_port **)&host->hostdata[0];
1756 static inline int ata_check_ready(u8 status)
1758 if (!(status & ATA_BUSY))
1761 /* 0xff indicates either no device or device not ready */
1768 static inline unsigned long ata_deadline(unsigned long from_jiffies,
1769 unsigned long timeout_msecs)
1771 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1774 /* Don't open code these in drivers as there are traps. Firstly the range may
1775 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1776 > UDMA_0. Dyma ddreigiau */
1778 static inline int ata_using_mwdma(struct ata_device *adev)
1780 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1785 static inline int ata_using_udma(struct ata_device *adev)
1787 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1792 static inline int ata_dma_enabled(struct ata_device *adev)
1794 return (adev->dma_mode == 0xFF ? 0 : 1);
1797 /**************************************************************************
1798 * PMP - drivers/ata/libata-pmp.c
1800 #ifdef CONFIG_SATA_PMP
1802 extern const struct ata_port_operations sata_pmp_port_ops;
1804 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1805 extern void sata_pmp_error_handler(struct ata_port *ap);
1807 #else /* CONFIG_SATA_PMP */
1809 #define sata_pmp_port_ops sata_port_ops
1810 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1811 #define sata_pmp_error_handler ata_std_error_handler
1813 #endif /* CONFIG_SATA_PMP */
1816 /**************************************************************************
1817 * SFF - drivers/ata/libata-sff.c
1819 #ifdef CONFIG_ATA_SFF
1821 extern const struct ata_port_operations ata_sff_port_ops;
1822 extern const struct ata_port_operations ata_bmdma32_port_ops;
1824 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1825 #define ATA_PIO_SHT(drv_name) \
1826 ATA_BASE_SHT(drv_name), \
1827 .sg_tablesize = LIBATA_MAX_PRD, \
1828 .dma_boundary = ATA_DMA_BOUNDARY
1830 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1831 extern u8 ata_sff_check_status(struct ata_port *ap);
1832 extern void ata_sff_pause(struct ata_port *ap);
1833 extern void ata_sff_dma_pause(struct ata_port *ap);
1834 extern int ata_sff_busy_sleep(struct ata_port *ap,
1835 unsigned long timeout_pat, unsigned long timeout);
1836 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1837 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1838 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1839 extern void ata_sff_exec_command(struct ata_port *ap,
1840 const struct ata_taskfile *tf);
1841 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
1842 unsigned char *buf, unsigned int buflen, int rw);
1843 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
1844 unsigned char *buf, unsigned int buflen, int rw);
1845 extern unsigned int ata_sff_data_xfer_noirq(struct ata_queued_cmd *qc,
1846 unsigned char *buf, unsigned int buflen, int rw);
1847 extern void ata_sff_irq_on(struct ata_port *ap);
1848 extern void ata_sff_irq_clear(struct ata_port *ap);
1849 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1850 u8 status, int in_wq);
1851 extern void ata_sff_queue_work(struct work_struct *work);
1852 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1853 unsigned long delay);
1854 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1855 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1856 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1857 extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1858 struct ata_queued_cmd *qc);
1859 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1860 extern void ata_sff_lost_interrupt(struct ata_port *ap);
1861 extern void ata_sff_freeze(struct ata_port *ap);
1862 extern void ata_sff_thaw(struct ata_port *ap);
1863 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1864 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1866 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1867 unsigned long deadline);
1868 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1869 unsigned long deadline);
1870 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1871 unsigned long deadline);
1872 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1873 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1874 extern void ata_sff_error_handler(struct ata_port *ap);
1875 extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1877 extern int ata_pci_sff_init_host(struct ata_host *host);
1878 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1879 const struct ata_port_info * const * ppi,
1880 struct ata_host **r_host);
1881 extern int ata_pci_sff_activate_host(struct ata_host *host,
1882 irq_handler_t irq_handler,
1883 struct scsi_host_template *sht);
1884 extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1885 const struct ata_port_info * const * ppi,
1886 struct scsi_host_template *sht, void *host_priv, int hflags);
1887 #endif /* CONFIG_PCI */
1889 #ifdef CONFIG_ATA_BMDMA
1891 extern const struct ata_port_operations ata_bmdma_port_ops;
1893 #define ATA_BMDMA_SHT(drv_name) \
1894 ATA_BASE_SHT(drv_name), \
1895 .sg_tablesize = LIBATA_MAX_PRD, \
1896 .dma_boundary = ATA_DMA_BOUNDARY
1898 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1899 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1900 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1901 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1902 struct ata_queued_cmd *qc);
1903 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1904 extern void ata_bmdma_error_handler(struct ata_port *ap);
1905 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1906 extern void ata_bmdma_irq_clear(struct ata_port *ap);
1907 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1908 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1909 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1910 extern u8 ata_bmdma_status(struct ata_port *ap);
1911 extern int ata_bmdma_port_start(struct ata_port *ap);
1912 extern int ata_bmdma_port_start32(struct ata_port *ap);
1915 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1916 extern void ata_pci_bmdma_init(struct ata_host *host);
1917 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1918 const struct ata_port_info * const * ppi,
1919 struct ata_host **r_host);
1920 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1921 const struct ata_port_info * const * ppi,
1922 struct scsi_host_template *sht,
1923 void *host_priv, int hflags);
1924 #endif /* CONFIG_PCI */
1925 #endif /* CONFIG_ATA_BMDMA */
1928 * ata_sff_busy_wait - Wait for a port status register
1929 * @ap: Port to wait for.
1930 * @bits: bits that must be clear
1931 * @max: number of 10uS waits to perform
1933 * Waits up to max*10 microseconds for the selected bits in the port's
1934 * status register to be cleared.
1935 * Returns final value of status register.
1938 * Inherited from caller.
1940 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1947 status = ap->ops->sff_check_status(ap);
1949 } while (status != 0xff && (status & bits) && (max > 0));
1955 * ata_wait_idle - Wait for a port to be idle.
1956 * @ap: Port to wait for.
1958 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1959 * Returns final value of status register.
1962 * Inherited from caller.
1964 static inline u8 ata_wait_idle(struct ata_port *ap)
1966 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1969 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1970 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1976 #endif /* CONFIG_ATA_SFF */
1978 #endif /* __LINUX_LIBATA_H__ */