1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2005 Jeff Garzik
6 * libata documentation is available via 'make {ps|pdf}docs',
7 * as Documentation/driver-api/libata.rst
10 #ifndef __LINUX_LIBATA_H__
11 #define __LINUX_LIBATA_H__
13 #include <linux/delay.h>
14 #include <linux/jiffies.h>
15 #include <linux/interrupt.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/scatterlist.h>
19 #include <linux/ata.h>
20 #include <linux/workqueue.h>
21 #include <scsi/scsi_host.h>
22 #include <linux/acpi.h>
23 #include <linux/cdrom.h>
24 #include <linux/sched.h>
25 #include <linux/async.h>
28 * Define if arch has non-standard setup. This is a _PCI_ standard
29 * not a legacy or ISA standard.
31 #ifdef CONFIG_ATA_NONSTANDARD
32 #include <asm/libata-portmap.h>
34 #define ATA_PRIMARY_IRQ(dev) 14
35 #define ATA_SECONDARY_IRQ(dev) 15
39 * compile-time options: to be removed as soon as all the drivers are
40 * converted to the new debugging mechanism
42 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
45 #define ata_print_version_once(dev, version) \
47 static bool __print_once; \
49 if (!__print_once) { \
50 __print_once = true; \
51 ata_print_version(dev, version); \
55 /* defines only for the constants which don't work well as enums */
56 #define ATA_TAG_POISON 0xfafbfcfdU
59 /* various global constants */
60 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
61 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
64 ATA_TAG_INTERNAL = ATA_MAX_QUEUE,
67 ATAPI_MAX_DRAIN = 16 << 10,
69 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
74 /* struct ata_taskfile flags */
75 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
76 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
77 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
78 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
79 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
80 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
81 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
83 /* struct ata_device stuff */
84 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
85 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
86 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
87 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
88 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
89 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
90 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
91 ATA_DFLAG_AN = (1 << 7), /* AN configured */
92 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */
93 ATA_DFLAG_FUA = (1 << 9), /* device supports FUA */
94 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
95 ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */
96 ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */
97 ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */
98 ATA_DFLAG_CFG_MASK = (1 << 14) - 1,
100 ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */
101 ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */
102 ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */
103 ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */
104 ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */
105 ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */
106 ATA_DFLAG_INIT_MASK = (1 << 20) - 1,
108 ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */
109 ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */
110 ATA_DFLAG_DETACH = (1 << 24),
111 ATA_DFLAG_DETACHED = (1 << 25),
112 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
113 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
114 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
115 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
116 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */
118 ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \
119 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \
120 ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \
123 ATA_DEV_UNKNOWN = 0, /* unknown device */
124 ATA_DEV_ATA = 1, /* ATA device */
125 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
126 ATA_DEV_ATAPI = 3, /* ATAPI device */
127 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
128 ATA_DEV_PMP = 5, /* SATA port multiplier */
129 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
130 ATA_DEV_SEMB = 7, /* SEMB */
131 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
132 ATA_DEV_ZAC = 9, /* ZAC device */
133 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */
134 ATA_DEV_NONE = 11, /* no device */
136 /* struct ata_link flags */
137 /* NOTE: struct ata_force_param currently stores lflags in u16 */
138 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
139 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
140 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
141 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
142 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
143 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
144 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
145 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
146 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
147 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
148 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
149 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */
151 /* struct ata_port flags */
152 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
153 /* (doesn't imply presence) */
154 ATA_FLAG_SATA = (1 << 1),
155 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */
156 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
157 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
158 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
159 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
160 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
161 * doesn't handle PIO interrupts */
162 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
163 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
164 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
165 ATA_FLAG_DEBUGMSG = (1 << 13),
166 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
167 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
168 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
169 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
170 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
171 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
172 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
173 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
175 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
177 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
178 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
180 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
183 /* struct ata_port pflags */
184 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
185 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
186 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
187 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
188 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
189 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
190 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
191 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
192 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
193 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
195 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
196 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
197 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
199 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
200 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
201 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
203 /* struct ata_queued_cmd flags */
204 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
205 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
206 ATA_QCFLAG_RTF_FILLED = (1 << 2), /* result TF has been filled */
207 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
208 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
209 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
210 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
211 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
212 ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */
214 ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */
215 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
216 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
217 ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */
220 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
221 ATA_HOST_STARTED = (1 << 1), /* Host started */
222 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
223 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
225 /* bits 24:31 of host->flags are reserved for LLD specific flags */
227 /* various lengths of time */
228 ATA_TMOUT_BOOT = 30000, /* heuristic */
229 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
230 ATA_TMOUT_INTERNAL_QUICK = 5000,
231 ATA_TMOUT_MAX_PARK = 30000,
234 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
235 * is too much without parallel probing. Use 2s if parallel
236 * probing is available, 800ms otherwise.
238 ATA_TMOUT_FF_WAIT_LONG = 2000,
239 ATA_TMOUT_FF_WAIT = 800,
241 /* Spec mandates to wait for ">= 2ms" before checking status
242 * after reset. We wait 150ms, because that was the magic
243 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
244 * the period of time between when the ATA command register is
245 * written, and then status is checked. Because waiting for
246 * "a while" before checking status is fine, post SRST, we
247 * perform this magic delay here as well.
249 * Old drivers/ide uses the 2mS rule and then waits for ready.
251 ATA_WAIT_AFTER_RESET = 150,
253 /* If PMP is supported, we have to do follow-up SRST. As some
254 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
255 * advised to wait only for the following duration before
258 ATA_TMOUT_PMP_SRST_WAIT = 5000,
260 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
261 * be a spurious PHY event, so ignore the first PHY event that
262 * occurs within 10s after the policy change.
264 ATA_TMOUT_SPURIOUS_PHY = 10000,
278 /* SATA port states */
283 /* encoding various smaller bitmaps into a single
284 * unsigned int bitmap
286 ATA_NR_PIO_MODES = 7,
287 ATA_NR_MWDMA_MODES = 5,
288 ATA_NR_UDMA_MODES = 8,
291 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
292 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
296 /* size of buffer to pad xfers ending on unaligned boundaries */
302 /* return values for ->qc_defer */
306 /* desc_len for ata_eh_info and context */
307 ATA_EH_DESC_LEN = 80,
309 /* reset / recovery action types */
310 ATA_EH_REVALIDATE = (1 << 0),
311 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
312 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
313 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
314 ATA_EH_ENABLE_LINK = (1 << 3),
315 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
316 ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */
318 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK |
319 ATA_EH_GET_SUCCESS_SENSE,
320 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
323 /* ata_eh_info->flags */
324 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
325 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
326 ATA_EHI_QUIET = (1 << 3), /* be quiet */
327 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
329 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
330 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
331 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
332 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
333 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
335 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
337 /* mask of flags to transfer *to* the slave link */
338 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
340 /* max tries if error condition is still set after ->error_handler */
341 ATA_EH_MAX_TRIES = 5,
343 /* sometimes resuming a link requires several retries */
344 ATA_LINK_RESUME_TRIES = 5,
346 /* how hard are we gonna try to probe/recover devices */
347 ATA_PROBE_MAX_TRIES = 3,
348 ATA_EH_DEV_TRIES = 3,
349 ATA_EH_PMP_TRIES = 5,
350 ATA_EH_PMP_LINK_TRIES = 3,
352 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
354 /* This should match the actual table size of
355 * ata_eh_cmd_timeout_table in libata-eh.c.
357 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7,
359 /* Horkage types. May be set by libata or controller on drives
360 (some horkage may be drive/controller pair dependent */
362 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
363 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
364 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
365 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
366 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
367 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
368 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
369 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
370 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
371 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
372 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
373 not multiple of 16 bytes */
374 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
375 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
376 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
377 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
378 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
379 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
380 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
381 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
382 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
383 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
384 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
385 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */
386 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
387 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
388 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */
389 ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */
390 ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */
391 ATA_HORKAGE_NO_LOG_DIR = (1 << 29), /* Do not read log directory */
392 ATA_HORKAGE_NO_FUA = (1 << 30), /* Do not use FUA */
394 /* DMA mask for user DMA control: User visible values; DO NOT
396 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
397 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
398 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
400 /* ATAPI command types */
401 ATAPI_READ = 0, /* READs */
402 ATAPI_WRITE = 1, /* WRITEs */
403 ATAPI_READ_CD = 2, /* READ CD [MSF] */
404 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
405 ATAPI_MISC = 4, /* the rest */
407 /* Timing constants */
408 ATA_TIMING_SETUP = (1 << 0),
409 ATA_TIMING_ACT8B = (1 << 1),
410 ATA_TIMING_REC8B = (1 << 2),
411 ATA_TIMING_CYC8B = (1 << 3),
412 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
414 ATA_TIMING_ACTIVE = (1 << 4),
415 ATA_TIMING_RECOVER = (1 << 5),
416 ATA_TIMING_DMACK_HOLD = (1 << 6),
417 ATA_TIMING_CYCLE = (1 << 7),
418 ATA_TIMING_UDMA = (1 << 8),
419 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
420 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
421 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
422 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
426 ATA_ACPI_FILTER_SETXFER = 1 << 0,
427 ATA_ACPI_FILTER_LOCK = 1 << 1,
428 ATA_ACPI_FILTER_DIPM = 1 << 2,
429 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
430 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
432 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
433 ATA_ACPI_FILTER_LOCK |
434 ATA_ACPI_FILTER_DIPM,
438 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO,
439 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA,
440 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA,
443 enum hsm_task_states {
444 HSM_ST_IDLE, /* no command on going */
445 HSM_ST_FIRST, /* (waiting the device to)
446 write CDB or first data block */
447 HSM_ST, /* (waiting the device to) transfer data */
448 HSM_ST_LAST, /* (waiting the device to) complete command */
449 HSM_ST_ERR, /* error */
452 enum ata_completion_errors {
453 AC_ERR_OK = 0, /* no error */
454 AC_ERR_DEV = (1 << 0), /* device reported error */
455 AC_ERR_HSM = (1 << 1), /* host state machine violation */
456 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
457 AC_ERR_MEDIA = (1 << 3), /* media error */
458 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
459 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
460 AC_ERR_SYSTEM = (1 << 6), /* system error */
461 AC_ERR_INVALID = (1 << 7), /* invalid argument */
462 AC_ERR_OTHER = (1 << 8), /* unknown */
463 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
464 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
468 * Link power management policy: If you alter this, you also need to
469 * alter libata-scsi.c (for the ascii descriptions)
471 enum ata_lpm_policy {
475 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
476 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
477 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
481 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
482 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
483 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */
486 /* forward declarations */
488 struct ata_port_operations;
491 struct ata_queued_cmd;
494 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
495 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
496 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
497 unsigned long deadline);
498 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
500 extern struct device_attribute dev_attr_unload_heads;
501 #ifdef CONFIG_SATA_HOST
502 extern struct device_attribute dev_attr_link_power_management_policy;
503 extern struct device_attribute dev_attr_ncq_prio_supported;
504 extern struct device_attribute dev_attr_ncq_prio_enable;
505 extern struct device_attribute dev_attr_em_message_type;
506 extern struct device_attribute dev_attr_em_message;
507 extern struct device_attribute dev_attr_sw_activity;
516 struct ata_taskfile {
517 unsigned long flags; /* ATA_TFLAG_xxx */
518 u8 protocol; /* ATA_PROT_xxx */
520 u8 ctl; /* control reg */
522 u8 hob_feature; /* additional data */
523 u8 hob_nsect; /* to support LBA48 */
544 u32 auxiliary; /* auxiliary field */
545 /* from SATA 3.1 and */
549 #ifdef CONFIG_ATA_SFF
551 void __iomem *cmd_addr;
552 void __iomem *data_addr;
553 void __iomem *error_addr;
554 void __iomem *feature_addr;
555 void __iomem *nsect_addr;
556 void __iomem *lbal_addr;
557 void __iomem *lbam_addr;
558 void __iomem *lbah_addr;
559 void __iomem *device_addr;
560 void __iomem *status_addr;
561 void __iomem *command_addr;
562 void __iomem *altstatus_addr;
563 void __iomem *ctl_addr;
564 #ifdef CONFIG_ATA_BMDMA
565 void __iomem *bmdma_addr;
566 #endif /* CONFIG_ATA_BMDMA */
567 void __iomem *scr_addr;
569 #endif /* CONFIG_ATA_SFF */
574 void __iomem * const *iomap;
575 unsigned int n_ports;
576 unsigned int n_tags; /* nr of NCQ tags */
578 struct ata_port_operations *ops;
582 struct mutex eh_mutex;
583 struct task_struct *eh_owner;
585 struct ata_port *simplex_claimed; /* channel owning the DMA */
586 struct ata_port *ports[];
589 struct ata_queued_cmd {
591 struct ata_device *dev;
593 struct scsi_cmnd *scsicmd;
594 void (*scsidone)(struct scsi_cmnd *);
596 struct ata_taskfile tf;
597 u8 cdb[ATAPI_CDB_LEN];
599 unsigned long flags; /* ATA_QCFLAG_xxx */
600 unsigned int tag; /* libata core tag */
601 unsigned int hw_tag; /* driver tag */
603 unsigned int orig_n_elem;
607 unsigned int sect_size;
610 unsigned int extrabytes;
611 unsigned int curbytes;
613 struct scatterlist sgent;
615 struct scatterlist *sg;
617 struct scatterlist *cursg;
618 unsigned int cursg_ofs;
620 unsigned int err_mask;
621 struct ata_taskfile result_tf;
622 ata_qc_cb_t complete_fn;
628 struct ata_port_stats {
629 unsigned long unhandled_irq;
630 unsigned long idle_irq;
631 unsigned long rw_reqbuf;
634 struct ata_ering_entry {
636 unsigned int err_mask;
642 struct ata_ering_entry ring[ATA_ERING_SIZE];
647 u8 num_storage_elements;
654 struct ata_cpr cpr[];
658 struct ata_link *link;
659 unsigned int devno; /* 0 or 1 */
660 unsigned int horkage; /* List of broken features */
661 unsigned long flags; /* ATA_DFLAG_xxx */
662 struct scsi_device *sdev; /* attached SCSI device */
664 #ifdef CONFIG_ATA_ACPI
665 union acpi_object *gtf_cache;
666 unsigned int gtf_filter;
668 #ifdef CONFIG_SATA_ZPODD
672 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
673 u64 n_sectors; /* size of device, if ATA */
674 u64 n_native_sectors; /* native size, if ATA */
675 unsigned int class; /* ATA_DEV_xxx */
676 unsigned long unpark_deadline;
681 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
683 unsigned int multi_count; /* sectors count for
684 READ/WRITE MULTIPLE */
685 unsigned int max_sectors; /* per-device max sectors */
686 unsigned int cdb_len;
688 /* per-dev xfer mask */
689 unsigned int pio_mask;
690 unsigned int mwdma_mask;
691 unsigned int udma_mask;
693 /* for CHS addressing */
694 u16 cylinders; /* Number of cylinders */
695 u16 heads; /* Number of heads */
696 u16 sectors; /* Number of sectors per track */
699 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
700 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
701 } ____cacheline_aligned;
703 /* DEVSLP Timing Variables from Identify Device Data Log */
704 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
706 /* NCQ send and receive log subcommand support */
707 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
708 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
710 /* ZAC zone configuration */
712 u32 zac_zones_optimal_open;
713 u32 zac_zones_optimal_nonseq;
714 u32 zac_zones_max_open;
716 /* Concurrent positioning ranges */
717 struct ata_cpr_log *cpr_log;
719 /* Command Duration Limits log support */
720 u8 cdl[ATA_LOG_CDL_SIZE];
724 /* ering is CLEAR_END, read comment above CLEAR_END */
725 struct ata_ering ering;
728 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
729 * cleared to zero on ata_dev_init().
731 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
732 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
735 struct ata_device *dev; /* offending device */
736 u32 serror; /* SError from LLDD */
737 unsigned int err_mask; /* port-wide err_mask */
738 unsigned int action; /* ATA_EH_* action mask */
739 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
740 unsigned int flags; /* ATA_EHI_* flags */
742 unsigned int probe_mask;
744 char desc[ATA_EH_DESC_LEN];
748 struct ata_eh_context {
749 struct ata_eh_info i;
750 int tries[ATA_MAX_DEVICES];
751 int cmd_timeout_idx[ATA_MAX_DEVICES]
752 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
753 unsigned int classes[ATA_MAX_DEVICES];
754 unsigned int did_probe_mask;
755 unsigned int unloaded_mask;
756 unsigned int saved_ncq_enabled;
757 u8 saved_xfer_mode[ATA_MAX_DEVICES];
758 /* timestamp for the last reset attempt or success */
759 unsigned long last_reset;
762 struct ata_acpi_drive
768 struct ata_acpi_gtm {
769 struct ata_acpi_drive drive[2];
775 int pmp; /* port multiplier port # */
778 unsigned int active_tag; /* active tag on this link */
779 u32 sactive; /* active NCQ commands */
781 unsigned int flags; /* ATA_LFLAG_xxx */
783 u32 saved_scontrol; /* SControl on probe */
784 unsigned int hw_sata_spd_limit;
785 unsigned int sata_spd_limit;
786 unsigned int sata_spd; /* current SATA PHY speed */
787 enum ata_lpm_policy lpm_policy;
789 /* record runtime error info, protected by host_set lock */
790 struct ata_eh_info eh_info;
792 struct ata_eh_context eh_context;
794 struct ata_device device[ATA_MAX_DEVICES];
796 unsigned long last_lpm_change; /* when last LPM change happened */
798 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
799 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
802 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
803 struct ata_port_operations *ops;
805 /* Flags owned by the EH context. Only EH should touch these once the
807 unsigned long flags; /* ATA_FLAG_xxx */
808 /* Flags that change dynamically, protected by ap->lock */
809 unsigned int pflags; /* ATA_PFLAG_xxx */
810 unsigned int print_id; /* user visible unique port ID */
811 unsigned int local_port_no; /* host local port num */
812 unsigned int port_no; /* 0 based port no. inside the host */
814 #ifdef CONFIG_ATA_SFF
815 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
816 u8 ctl; /* cache of ATA control register */
817 u8 last_ctl; /* Cache last written value */
818 struct ata_link* sff_pio_task_link; /* link currently used */
819 struct delayed_work sff_pio_task;
820 #ifdef CONFIG_ATA_BMDMA
821 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
822 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
823 #endif /* CONFIG_ATA_BMDMA */
824 #endif /* CONFIG_ATA_SFF */
826 unsigned int pio_mask;
827 unsigned int mwdma_mask;
828 unsigned int udma_mask;
829 unsigned int cbl; /* cable type; ATA_CBL_xxx */
831 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1];
833 int nr_active_links; /* #links with active qcs */
835 struct ata_link link; /* host default link */
836 struct ata_link *slave_link; /* see ata_slave_link_init() */
838 int nr_pmp_links; /* nr of available PMP links */
839 struct ata_link *pmp_link; /* array of PMP links */
840 struct ata_link *excl_link; /* for PMP qc exclusion */
842 struct ata_port_stats stats;
843 struct ata_host *host;
847 struct mutex scsi_scan_mutex;
848 struct delayed_work hotplug_task;
849 struct delayed_work scsi_rescan_task;
851 unsigned int hsm_task_state;
853 struct list_head eh_done_q;
854 wait_queue_head_t eh_wait_q;
856 struct completion park_req_pending;
858 pm_message_t pm_mesg;
859 enum ata_lpm_policy target_lpm_policy;
861 struct timer_list fastdrain_timer;
862 unsigned int fastdrain_cnt;
864 async_cookie_t cookie;
869 #ifdef CONFIG_ATA_ACPI
870 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
874 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
877 /* The following initializer overrides a method to NULL whether one of
878 * its parent has the method defined or not. This is equivalent to
879 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
880 * expression and thus can't be used as an initializer.
882 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
884 struct ata_port_operations {
888 int (*qc_defer)(struct ata_queued_cmd *qc);
889 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
890 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
891 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
892 void (*qc_fill_rtf)(struct ata_queued_cmd *qc);
893 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask);
896 * Configuration and exception handling
898 int (*cable_detect)(struct ata_port *ap);
899 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask);
900 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
901 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
902 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
903 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf,
906 void (*dev_config)(struct ata_device *dev);
908 void (*freeze)(struct ata_port *ap);
909 void (*thaw)(struct ata_port *ap);
910 ata_prereset_fn_t prereset;
911 ata_reset_fn_t softreset;
912 ata_reset_fn_t hardreset;
913 ata_postreset_fn_t postreset;
914 ata_prereset_fn_t pmp_prereset;
915 ata_reset_fn_t pmp_softreset;
916 ata_reset_fn_t pmp_hardreset;
917 ata_postreset_fn_t pmp_postreset;
918 void (*error_handler)(struct ata_port *ap);
919 void (*lost_interrupt)(struct ata_port *ap);
920 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
921 void (*sched_eh)(struct ata_port *ap);
922 void (*end_eh)(struct ata_port *ap);
927 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
928 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
929 void (*pmp_attach)(struct ata_port *ap);
930 void (*pmp_detach)(struct ata_port *ap);
931 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
935 * Start, stop, suspend and resume
937 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
938 int (*port_resume)(struct ata_port *ap);
939 int (*port_start)(struct ata_port *ap);
940 void (*port_stop)(struct ata_port *ap);
941 void (*host_stop)(struct ata_host *host);
943 #ifdef CONFIG_ATA_SFF
945 * SFF / taskfile oriented ops
947 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
948 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
949 u8 (*sff_check_status)(struct ata_port *ap);
950 u8 (*sff_check_altstatus)(struct ata_port *ap);
951 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
952 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
953 void (*sff_exec_command)(struct ata_port *ap,
954 const struct ata_taskfile *tf);
955 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
956 unsigned char *buf, unsigned int buflen, int rw);
957 void (*sff_irq_on)(struct ata_port *);
958 bool (*sff_irq_check)(struct ata_port *);
959 void (*sff_irq_clear)(struct ata_port *);
960 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
962 #ifdef CONFIG_ATA_BMDMA
963 void (*bmdma_setup)(struct ata_queued_cmd *qc);
964 void (*bmdma_start)(struct ata_queued_cmd *qc);
965 void (*bmdma_stop)(struct ata_queued_cmd *qc);
966 u8 (*bmdma_status)(struct ata_port *ap);
967 #endif /* CONFIG_ATA_BMDMA */
968 #endif /* CONFIG_ATA_SFF */
970 ssize_t (*em_show)(struct ata_port *ap, char *buf);
971 ssize_t (*em_store)(struct ata_port *ap, const char *message,
973 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
974 ssize_t (*sw_activity_store)(struct ata_device *dev,
975 enum sw_activity val);
976 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
982 void (*phy_reset)(struct ata_port *ap);
983 void (*eng_timeout)(struct ata_port *ap);
986 * ->inherits must be the last field and all the preceding
987 * fields must be pointers.
989 const struct ata_port_operations *inherits;
992 struct ata_port_info {
994 unsigned long link_flags;
995 unsigned int pio_mask;
996 unsigned int mwdma_mask;
997 unsigned int udma_mask;
998 struct ata_port_operations *port_ops;
1003 unsigned short mode; /* ATA mode */
1004 unsigned short setup; /* t1 */
1005 unsigned short act8b; /* t2 for 8-bit I/O */
1006 unsigned short rec8b; /* t2i for 8-bit I/O */
1007 unsigned short cyc8b; /* t0 for 8-bit I/O */
1008 unsigned short active; /* t2 or tD */
1009 unsigned short recover; /* t2i or tK */
1010 unsigned short dmack_hold; /* tj */
1011 unsigned short cycle; /* t0 */
1012 unsigned short udma; /* t2CYCTYP/2 */
1016 * Core layer - drivers/ata/libata-core.c
1018 extern struct ata_port_operations ata_dummy_port_ops;
1019 extern const struct ata_port_info ata_dummy_port_info;
1021 static inline bool ata_is_atapi(u8 prot)
1023 return prot & ATA_PROT_FLAG_ATAPI;
1026 static inline bool ata_is_pio(u8 prot)
1028 return prot & ATA_PROT_FLAG_PIO;
1031 static inline bool ata_is_dma(u8 prot)
1033 return prot & ATA_PROT_FLAG_DMA;
1036 static inline bool ata_is_ncq(u8 prot)
1038 return prot & ATA_PROT_FLAG_NCQ;
1041 static inline bool ata_is_data(u8 prot)
1043 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1046 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1048 return (tf->command == ATA_CMD_READ_MULTI) ||
1049 (tf->command == ATA_CMD_WRITE_MULTI) ||
1050 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1051 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1052 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1055 static inline int ata_port_is_dummy(struct ata_port *ap)
1057 return ap->ops == &ata_dummy_port_ops;
1060 static inline bool ata_port_is_frozen(const struct ata_port *ap)
1062 return ap->pflags & ATA_PFLAG_FROZEN;
1065 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1066 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1067 int (*check_ready)(struct ata_link *link));
1068 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1069 unsigned long deadline);
1070 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1072 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1073 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1074 const struct ata_port_info * const * ppi, int n_ports);
1075 extern void ata_host_get(struct ata_host *host);
1076 extern void ata_host_put(struct ata_host *host);
1077 extern int ata_host_start(struct ata_host *host);
1078 extern int ata_host_register(struct ata_host *host,
1079 const struct scsi_host_template *sht);
1080 extern int ata_host_activate(struct ata_host *host, int irq,
1081 irq_handler_t irq_handler, unsigned long irq_flags,
1082 const struct scsi_host_template *sht);
1083 extern void ata_host_detach(struct ata_host *host);
1084 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1085 extern int ata_scsi_detect(struct scsi_host_template *sht);
1086 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
1088 #ifdef CONFIG_COMPAT
1089 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
1091 #define ATA_SCSI_COMPAT_IOCTL /* empty */
1093 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1094 #if IS_REACHABLE(CONFIG_ATA)
1095 bool ata_scsi_dma_need_drain(struct request *rq);
1097 #define ata_scsi_dma_need_drain NULL
1099 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1100 unsigned int cmd, void __user *arg);
1101 extern bool ata_link_online(struct ata_link *link);
1102 extern bool ata_link_offline(struct ata_link *link);
1104 extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1105 extern void ata_host_resume(struct ata_host *host);
1106 extern void ata_sas_port_suspend(struct ata_port *ap);
1107 extern void ata_sas_port_resume(struct ata_port *ap);
1109 static inline void ata_sas_port_suspend(struct ata_port *ap)
1112 static inline void ata_sas_port_resume(struct ata_port *ap)
1116 extern int ata_ratelimit(void);
1117 extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1118 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1119 u32 val, unsigned long interval, unsigned long timeout);
1120 extern int atapi_cmd_type(u8 opcode);
1121 extern unsigned int ata_pack_xfermask(unsigned int pio_mask,
1122 unsigned int mwdma_mask,
1123 unsigned int udma_mask);
1124 extern void ata_unpack_xfermask(unsigned int xfer_mask,
1125 unsigned int *pio_mask,
1126 unsigned int *mwdma_mask,
1127 unsigned int *udma_mask);
1128 extern u8 ata_xfer_mask2mode(unsigned int xfer_mask);
1129 extern unsigned int ata_xfer_mode2mask(u8 xfer_mode);
1130 extern int ata_xfer_mode2shift(u8 xfer_mode);
1131 extern const char *ata_mode_string(unsigned int xfer_mask);
1132 extern unsigned int ata_id_xfermask(const u16 *id);
1133 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1134 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
1135 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1136 unsigned int n_elem);
1137 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1138 extern unsigned int ata_port_classify(struct ata_port *ap,
1139 const struct ata_taskfile *tf);
1140 extern void ata_dev_disable(struct ata_device *adev);
1141 extern void ata_id_string(const u16 *id, unsigned char *s,
1142 unsigned int ofs, unsigned int len);
1143 extern void ata_id_c_string(const u16 *id, unsigned char *s,
1144 unsigned int ofs, unsigned int len);
1145 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1146 struct ata_taskfile *tf, __le16 *id);
1147 extern void ata_qc_complete(struct ata_queued_cmd *qc);
1148 extern u64 ata_qc_get_active(struct ata_port *ap);
1149 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1150 extern int ata_std_bios_param(struct scsi_device *sdev,
1151 struct block_device *bdev,
1152 sector_t capacity, int geom[]);
1153 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1154 extern int ata_scsi_slave_config(struct scsi_device *sdev);
1155 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1156 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1158 extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1160 extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1161 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1162 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1163 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1166 * SATA specific code - drivers/ata/libata-sata.c
1168 #ifdef CONFIG_SATA_HOST
1169 extern const unsigned long sata_deb_timing_normal[];
1170 extern const unsigned long sata_deb_timing_hotplug[];
1171 extern const unsigned long sata_deb_timing_long[];
1173 static inline const unsigned long *
1174 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1176 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1177 return sata_deb_timing_hotplug;
1179 return sata_deb_timing_normal;
1182 extern int sata_scr_valid(struct ata_link *link);
1183 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1184 extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1185 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1186 extern int sata_set_spd(struct ata_link *link);
1187 extern int sata_link_hardreset(struct ata_link *link,
1188 const unsigned long *timing, unsigned long deadline,
1189 bool *online, int (*check_ready)(struct ata_link *));
1190 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
1191 unsigned long deadline);
1192 extern int ata_eh_read_sense_success_ncq_log(struct ata_link *link);
1193 extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1195 static inline const unsigned long *
1196 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1200 static inline int sata_scr_valid(struct ata_link *link) { return 0; }
1201 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
1205 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
1209 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
1213 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
1214 static inline int sata_link_hardreset(struct ata_link *link,
1215 const unsigned long *timing,
1216 unsigned long deadline,
1218 int (*check_ready)(struct ata_link *))
1224 static inline int sata_link_resume(struct ata_link *link,
1225 const unsigned long *params,
1226 unsigned long deadline)
1230 static inline int ata_eh_read_sense_success_ncq_log(struct ata_link *link)
1234 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
1236 extern int sata_link_debounce(struct ata_link *link,
1237 const unsigned long *params, unsigned long deadline);
1238 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1240 extern int ata_slave_link_init(struct ata_port *ap);
1241 extern void ata_sas_port_destroy(struct ata_port *);
1242 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1243 struct ata_port_info *, struct Scsi_Host *);
1244 extern void ata_sas_async_probe(struct ata_port *ap);
1245 extern int ata_sas_sync_probe(struct ata_port *ap);
1246 extern int ata_sas_port_init(struct ata_port *);
1247 extern int ata_sas_port_start(struct ata_port *ap);
1248 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
1249 extern void ata_sas_tport_delete(struct ata_port *ap);
1250 extern void ata_sas_port_stop(struct ata_port *ap);
1251 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1252 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1253 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1254 u8 pmp, int is_cmd, u8 *fis);
1255 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1256 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
1257 extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1258 extern int sata_async_notification(struct ata_port *ap);
1260 extern int ata_cable_40wire(struct ata_port *ap);
1261 extern int ata_cable_80wire(struct ata_port *ap);
1262 extern int ata_cable_sata(struct ata_port *ap);
1263 extern int ata_cable_ignore(struct ata_port *ap);
1264 extern int ata_cable_unknown(struct ata_port *ap);
1266 /* Timing helpers */
1267 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1268 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1275 unsigned int reg; /* PCI config register to read */
1276 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1281 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1282 extern void ata_pci_shutdown_one(struct pci_dev *pdev);
1283 extern void ata_pci_remove_one(struct pci_dev *pdev);
1286 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1287 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1288 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1289 extern int ata_pci_device_resume(struct pci_dev *pdev);
1290 #endif /* CONFIG_PM */
1291 #endif /* CONFIG_PCI */
1293 struct platform_device;
1295 extern void ata_platform_remove_one(struct platform_device *pdev);
1298 * ACPI - drivers/ata/libata-acpi.c
1300 #ifdef CONFIG_ATA_ACPI
1301 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1303 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1304 return &ap->__acpi_init_gtm;
1307 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1308 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1309 unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1310 const struct ata_acpi_gtm *gtm);
1311 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1313 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1318 static inline int ata_acpi_stm(const struct ata_port *ap,
1319 struct ata_acpi_gtm *stm)
1324 static inline int ata_acpi_gtm(const struct ata_port *ap,
1325 struct ata_acpi_gtm *stm)
1330 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1331 const struct ata_acpi_gtm *gtm)
1336 static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1337 const struct ata_acpi_gtm *gtm)
1344 * EH - drivers/ata/libata-eh.c
1346 extern void ata_port_schedule_eh(struct ata_port *ap);
1347 extern void ata_port_wait_eh(struct ata_port *ap);
1348 extern int ata_link_abort(struct ata_link *link);
1349 extern int ata_port_abort(struct ata_port *ap);
1350 extern int ata_port_freeze(struct ata_port *ap);
1352 extern void ata_eh_freeze_port(struct ata_port *ap);
1353 extern void ata_eh_thaw_port(struct ata_port *ap);
1355 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1356 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1358 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1359 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1360 ata_postreset_fn_t postreset);
1361 extern void ata_std_error_handler(struct ata_port *ap);
1362 extern void ata_std_sched_eh(struct ata_port *ap);
1363 extern void ata_std_end_eh(struct ata_port *ap);
1364 extern int ata_link_nr_enabled(struct ata_link *link);
1367 * Base operations to inherit from and initializers for sht
1371 * base : Common to all libata drivers.
1372 * sata : SATA controllers w/ native interface.
1373 * pmp : SATA controllers w/ PMP support.
1374 * sff : SFF ATA controllers w/o BMDMA support.
1375 * bmdma : SFF ATA controllers w/ BMDMA support.
1379 * BASE : Common to all libata drivers. The user must set
1380 * sg_tablesize and dma_boundary.
1381 * PIO : SFF ATA controllers w/ only PIO support.
1382 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1383 * dma_boundary are set to BMDMA limits.
1384 * NCQ : SATA controllers supporting NCQ. The user must set
1385 * sg_tablesize, dma_boundary and can_queue.
1387 extern const struct ata_port_operations ata_base_port_ops;
1388 extern const struct ata_port_operations sata_port_ops;
1389 extern const struct attribute_group *ata_common_sdev_groups[];
1392 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1393 * by the edge drivers. Because the 'module' field of sht must be the
1394 * edge driver's module reference, otherwise the driver can be unloaded
1395 * even if the scsi_device is being accessed.
1397 #define __ATA_BASE_SHT(drv_name) \
1398 .module = THIS_MODULE, \
1400 .ioctl = ata_scsi_ioctl, \
1401 ATA_SCSI_COMPAT_IOCTL \
1402 .queuecommand = ata_scsi_queuecmd, \
1403 .dma_need_drain = ata_scsi_dma_need_drain, \
1404 .this_id = ATA_SHT_THIS_ID, \
1405 .emulated = ATA_SHT_EMULATED, \
1406 .proc_name = drv_name, \
1407 .slave_destroy = ata_scsi_slave_destroy, \
1408 .bios_param = ata_std_bios_param, \
1409 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\
1410 .max_sectors = ATA_MAX_SECTORS_LBA48
1412 #define ATA_SUBBASE_SHT(drv_name) \
1413 __ATA_BASE_SHT(drv_name), \
1414 .can_queue = ATA_DEF_QUEUE, \
1415 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1416 .slave_configure = ata_scsi_slave_config
1418 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \
1419 __ATA_BASE_SHT(drv_name), \
1420 .can_queue = drv_qd, \
1421 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1422 .slave_configure = ata_scsi_slave_config
1424 #define ATA_BASE_SHT(drv_name) \
1425 ATA_SUBBASE_SHT(drv_name), \
1426 .sdev_groups = ata_common_sdev_groups
1428 #ifdef CONFIG_SATA_HOST
1429 extern const struct attribute_group *ata_ncq_sdev_groups[];
1431 #define ATA_NCQ_SHT(drv_name) \
1432 ATA_SUBBASE_SHT(drv_name), \
1433 .sdev_groups = ata_ncq_sdev_groups, \
1434 .change_queue_depth = ata_scsi_change_queue_depth
1436 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \
1437 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \
1438 .sdev_groups = ata_ncq_sdev_groups, \
1439 .change_queue_depth = ata_scsi_change_queue_depth
1445 #ifdef CONFIG_SATA_PMP
1446 static inline bool sata_pmp_supported(struct ata_port *ap)
1448 return ap->flags & ATA_FLAG_PMP;
1451 static inline bool sata_pmp_attached(struct ata_port *ap)
1453 return ap->nr_pmp_links != 0;
1456 static inline bool ata_is_host_link(const struct ata_link *link)
1458 return link == &link->ap->link || link == link->ap->slave_link;
1460 #else /* CONFIG_SATA_PMP */
1461 static inline bool sata_pmp_supported(struct ata_port *ap)
1466 static inline bool sata_pmp_attached(struct ata_port *ap)
1471 static inline bool ata_is_host_link(const struct ata_link *link)
1475 #endif /* CONFIG_SATA_PMP */
1477 static inline int sata_srst_pmp(struct ata_link *link)
1479 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1480 return SATA_PMP_CTRL_PORT;
1484 #define ata_port_printk(level, ap, fmt, ...) \
1485 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__)
1487 #define ata_port_err(ap, fmt, ...) \
1488 ata_port_printk(err, ap, fmt, ##__VA_ARGS__)
1489 #define ata_port_warn(ap, fmt, ...) \
1490 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__)
1491 #define ata_port_notice(ap, fmt, ...) \
1492 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__)
1493 #define ata_port_info(ap, fmt, ...) \
1494 ata_port_printk(info, ap, fmt, ##__VA_ARGS__)
1495 #define ata_port_dbg(ap, fmt, ...) \
1496 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__)
1498 #define ata_link_printk(level, link, fmt, ...) \
1500 if (sata_pmp_attached((link)->ap) || \
1501 (link)->ap->slave_link) \
1502 pr_ ## level ("ata%u.%02u: " fmt, \
1503 (link)->ap->print_id, \
1507 pr_ ## level ("ata%u: " fmt, \
1508 (link)->ap->print_id, \
1512 #define ata_link_err(link, fmt, ...) \
1513 ata_link_printk(err, link, fmt, ##__VA_ARGS__)
1514 #define ata_link_warn(link, fmt, ...) \
1515 ata_link_printk(warn, link, fmt, ##__VA_ARGS__)
1516 #define ata_link_notice(link, fmt, ...) \
1517 ata_link_printk(notice, link, fmt, ##__VA_ARGS__)
1518 #define ata_link_info(link, fmt, ...) \
1519 ata_link_printk(info, link, fmt, ##__VA_ARGS__)
1520 #define ata_link_dbg(link, fmt, ...) \
1521 ata_link_printk(debug, link, fmt, ##__VA_ARGS__)
1523 #define ata_dev_printk(level, dev, fmt, ...) \
1524 pr_ ## level("ata%u.%02u: " fmt, \
1525 (dev)->link->ap->print_id, \
1526 (dev)->link->pmp + (dev)->devno, \
1529 #define ata_dev_err(dev, fmt, ...) \
1530 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__)
1531 #define ata_dev_warn(dev, fmt, ...) \
1532 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__)
1533 #define ata_dev_notice(dev, fmt, ...) \
1534 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__)
1535 #define ata_dev_info(dev, fmt, ...) \
1536 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__)
1537 #define ata_dev_dbg(dev, fmt, ...) \
1538 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__)
1540 void ata_print_version(const struct device *dev, const char *version);
1543 * ata_eh_info helpers
1545 extern __printf(2, 3)
1546 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1547 extern __printf(2, 3)
1548 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1549 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1551 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1553 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1554 ehi->flags |= ATA_EHI_HOTPLUGGED;
1555 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1556 ehi->err_mask |= AC_ERR_ATA_BUS;
1560 * port description helpers
1562 extern __printf(2, 3)
1563 void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1565 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1569 static inline bool ata_tag_internal(unsigned int tag)
1571 return tag == ATA_TAG_INTERNAL;
1574 static inline bool ata_tag_valid(unsigned int tag)
1576 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
1579 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1580 for ((tag) = 0; (tag) < (max_tag) && \
1581 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1584 * Internal use only, iterate commands ignoring error handling and
1587 #define ata_qc_for_each_raw(ap, qc, tag) \
1588 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1591 * Iterate all potential commands that can be queued
1593 #define ata_qc_for_each(ap, qc, tag) \
1594 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1597 * Like ata_qc_for_each, but with the internal tag included
1599 #define ata_qc_for_each_with_internal(ap, qc, tag) \
1600 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1605 static inline unsigned int ata_class_enabled(unsigned int class)
1607 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1608 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1609 class == ATA_DEV_ZAC;
1612 static inline unsigned int ata_class_disabled(unsigned int class)
1614 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1615 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1616 class == ATA_DEV_ZAC_UNSUP;
1619 static inline unsigned int ata_class_absent(unsigned int class)
1621 return !ata_class_enabled(class) && !ata_class_disabled(class);
1624 static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1626 return ata_class_enabled(dev->class);
1629 static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1631 return ata_class_disabled(dev->class);
1634 static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1636 return ata_class_absent(dev->class);
1642 static inline int ata_link_max_devices(const struct ata_link *link)
1644 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1649 static inline int ata_link_active(struct ata_link *link)
1651 return ata_tag_valid(link->active_tag) || link->sactive;
1657 * ATA_LITER_* constants are used to select link iteration mode and
1658 * ATA_DITER_* device iteration mode.
1660 * For a custom iteration directly using ata_{link|dev}_next(), if
1661 * @link or @dev, respectively, is NULL, the first element is
1662 * returned. @dev and @link can be any valid device or link and the
1663 * next element according to the iteration mode will be returned.
1664 * After the last element, NULL is returned.
1666 enum ata_link_iter_mode {
1667 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1668 * host link. no slave link */
1669 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1670 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1671 * slave link still comes after host link */
1674 enum ata_dev_iter_mode {
1676 ATA_DITER_ENABLED_REVERSE,
1678 ATA_DITER_ALL_REVERSE,
1681 extern struct ata_link *ata_link_next(struct ata_link *link,
1682 struct ata_port *ap,
1683 enum ata_link_iter_mode mode);
1685 extern struct ata_device *ata_dev_next(struct ata_device *dev,
1686 struct ata_link *link,
1687 enum ata_dev_iter_mode mode);
1690 * Shortcut notation for iterations
1692 * ata_for_each_link() iterates over each link of @ap according to
1693 * @mode. @link points to the current link in the loop. @link is
1694 * NULL after loop termination. ata_for_each_dev() works the same way
1695 * except that it iterates over each device of @link.
1697 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1698 * specified when using the following shorthand notations. Only the
1699 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1700 * specified. This not only increases brevity but also makes it
1701 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1703 #define ata_for_each_link(link, ap, mode) \
1704 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1705 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1707 #define ata_for_each_dev(dev, link, mode) \
1708 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1709 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1712 * ata_ncq_supported - Test whether NCQ is supported
1713 * @dev: ATA device to test
1716 * spin_lock_irqsave(host lock)
1719 * true if @dev supports NCQ, false otherwise.
1721 static inline bool ata_ncq_supported(struct ata_device *dev)
1723 if (!IS_ENABLED(CONFIG_SATA_HOST))
1725 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1729 * ata_ncq_enabled - Test whether NCQ is enabled
1730 * @dev: ATA device to test
1733 * spin_lock_irqsave(host lock)
1736 * true if NCQ is enabled for @dev, false otherwise.
1738 static inline bool ata_ncq_enabled(struct ata_device *dev)
1740 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF);
1743 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1745 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1746 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1747 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1750 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1752 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1753 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1754 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1757 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1759 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1760 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1761 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1764 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1766 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1767 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1770 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1772 qc->tf.ctl |= ATA_NIEN;
1775 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1778 if (ata_tag_valid(tag))
1779 return &ap->qcmd[tag];
1783 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1786 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1788 if (unlikely(!qc) || !ap->ops->error_handler)
1791 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1792 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE)
1798 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1800 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1803 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1805 memset(tf, 0, sizeof(*tf));
1807 #ifdef CONFIG_ATA_SFF
1808 tf->ctl = dev->link->ap->ctl;
1810 tf->ctl = ATA_DEVCTL_OBS;
1812 if (dev->devno == 0)
1813 tf->device = ATA_DEVICE_OBS;
1815 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1818 static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1820 qc->dma_dir = DMA_NONE;
1825 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1828 qc->sect_size = ATA_SECT_SIZE;
1830 ata_tf_init(qc->dev, &qc->tf);
1832 /* init result_tf such that it indicates normal completion */
1833 qc->result_tf.command = ATA_DRDY;
1834 qc->result_tf.feature = 0;
1837 static inline int ata_try_flush_cache(const struct ata_device *dev)
1839 return ata_id_wcache_enabled(dev->id) ||
1840 ata_id_has_flush(dev->id) ||
1841 ata_id_has_flush_ext(dev->id);
1844 static inline unsigned int ac_err_mask(u8 status)
1846 if (status & (ATA_BUSY | ATA_DRQ))
1848 if (status & (ATA_ERR | ATA_DF))
1853 static inline unsigned int __ac_err_mask(u8 status)
1855 unsigned int mask = ac_err_mask(status);
1857 return AC_ERR_OTHER;
1861 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1863 return *(struct ata_port **)&host->hostdata[0];
1866 static inline int ata_check_ready(u8 status)
1868 if (!(status & ATA_BUSY))
1871 /* 0xff indicates either no device or device not ready */
1878 static inline unsigned long ata_deadline(unsigned long from_jiffies,
1879 unsigned long timeout_msecs)
1881 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1884 /* Don't open code these in drivers as there are traps. Firstly the range may
1885 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1886 > UDMA_0. Dyma ddreigiau */
1888 static inline int ata_using_mwdma(struct ata_device *adev)
1890 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1895 static inline int ata_using_udma(struct ata_device *adev)
1897 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1902 static inline int ata_dma_enabled(struct ata_device *adev)
1904 return (adev->dma_mode == 0xFF ? 0 : 1);
1907 /**************************************************************************
1908 * PATA timings - drivers/ata/libata-pata-timings.c
1910 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1911 extern int ata_timing_compute(struct ata_device *, unsigned short,
1912 struct ata_timing *, int, int);
1913 extern void ata_timing_merge(const struct ata_timing *,
1914 const struct ata_timing *, struct ata_timing *,
1917 /**************************************************************************
1918 * PMP - drivers/ata/libata-pmp.c
1920 #ifdef CONFIG_SATA_PMP
1922 extern const struct ata_port_operations sata_pmp_port_ops;
1924 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1925 extern void sata_pmp_error_handler(struct ata_port *ap);
1927 #else /* CONFIG_SATA_PMP */
1929 #define sata_pmp_port_ops sata_port_ops
1930 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1931 #define sata_pmp_error_handler ata_std_error_handler
1933 #endif /* CONFIG_SATA_PMP */
1936 /**************************************************************************
1937 * SFF - drivers/ata/libata-sff.c
1939 #ifdef CONFIG_ATA_SFF
1941 extern const struct ata_port_operations ata_sff_port_ops;
1942 extern const struct ata_port_operations ata_bmdma32_port_ops;
1944 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1945 #define ATA_PIO_SHT(drv_name) \
1946 ATA_BASE_SHT(drv_name), \
1947 .sg_tablesize = LIBATA_MAX_PRD, \
1948 .dma_boundary = ATA_DMA_BOUNDARY
1950 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1951 extern u8 ata_sff_check_status(struct ata_port *ap);
1952 extern void ata_sff_pause(struct ata_port *ap);
1953 extern void ata_sff_dma_pause(struct ata_port *ap);
1954 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1955 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1956 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1957 extern void ata_sff_exec_command(struct ata_port *ap,
1958 const struct ata_taskfile *tf);
1959 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
1960 unsigned char *buf, unsigned int buflen, int rw);
1961 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
1962 unsigned char *buf, unsigned int buflen, int rw);
1963 extern void ata_sff_irq_on(struct ata_port *ap);
1964 extern void ata_sff_irq_clear(struct ata_port *ap);
1965 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1966 u8 status, int in_wq);
1967 extern void ata_sff_queue_work(struct work_struct *work);
1968 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1969 unsigned long delay);
1970 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1971 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1972 extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1973 extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1974 struct ata_queued_cmd *qc);
1975 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1976 extern void ata_sff_lost_interrupt(struct ata_port *ap);
1977 extern void ata_sff_freeze(struct ata_port *ap);
1978 extern void ata_sff_thaw(struct ata_port *ap);
1979 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1980 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1982 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1983 unsigned long deadline);
1984 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1985 unsigned long deadline);
1986 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1987 unsigned long deadline);
1988 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1989 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1990 extern void ata_sff_error_handler(struct ata_port *ap);
1991 extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1993 extern int ata_pci_sff_init_host(struct ata_host *host);
1994 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1995 const struct ata_port_info * const * ppi,
1996 struct ata_host **r_host);
1997 extern int ata_pci_sff_activate_host(struct ata_host *host,
1998 irq_handler_t irq_handler,
1999 const struct scsi_host_template *sht);
2000 extern int ata_pci_sff_init_one(struct pci_dev *pdev,
2001 const struct ata_port_info * const * ppi,
2002 const struct scsi_host_template *sht, void *host_priv, int hflags);
2003 #endif /* CONFIG_PCI */
2005 #ifdef CONFIG_ATA_BMDMA
2007 extern const struct ata_port_operations ata_bmdma_port_ops;
2009 #define ATA_BMDMA_SHT(drv_name) \
2010 ATA_BASE_SHT(drv_name), \
2011 .sg_tablesize = LIBATA_MAX_PRD, \
2012 .dma_boundary = ATA_DMA_BOUNDARY
2014 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
2015 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
2016 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
2017 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
2018 struct ata_queued_cmd *qc);
2019 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
2020 extern void ata_bmdma_error_handler(struct ata_port *ap);
2021 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
2022 extern void ata_bmdma_irq_clear(struct ata_port *ap);
2023 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
2024 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
2025 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
2026 extern u8 ata_bmdma_status(struct ata_port *ap);
2027 extern int ata_bmdma_port_start(struct ata_port *ap);
2028 extern int ata_bmdma_port_start32(struct ata_port *ap);
2031 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
2032 extern void ata_pci_bmdma_init(struct ata_host *host);
2033 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
2034 const struct ata_port_info * const * ppi,
2035 struct ata_host **r_host);
2036 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
2037 const struct ata_port_info * const * ppi,
2038 const struct scsi_host_template *sht,
2039 void *host_priv, int hflags);
2040 #endif /* CONFIG_PCI */
2041 #endif /* CONFIG_ATA_BMDMA */
2044 * ata_sff_busy_wait - Wait for a port status register
2045 * @ap: Port to wait for.
2046 * @bits: bits that must be clear
2047 * @max: number of 10uS waits to perform
2049 * Waits up to max*10 microseconds for the selected bits in the port's
2050 * status register to be cleared.
2051 * Returns final value of status register.
2054 * Inherited from caller.
2056 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
2063 status = ap->ops->sff_check_status(ap);
2065 } while (status != 0xff && (status & bits) && (max > 0));
2071 * ata_wait_idle - Wait for a port to be idle.
2072 * @ap: Port to wait for.
2074 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
2075 * Returns final value of status register.
2078 * Inherited from caller.
2080 static inline u8 ata_wait_idle(struct ata_port *ap)
2082 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
2084 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
2085 ata_port_dbg(ap, "abnormal Status 0x%X\n", status);
2089 #endif /* CONFIG_ATA_SFF */
2091 #endif /* __LINUX_LIBATA_H__ */