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_EH_DEV_TRIES = 3,
348 ATA_EH_PMP_TRIES = 5,
349 ATA_EH_PMP_LINK_TRIES = 3,
351 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
353 /* This should match the actual table size of
354 * ata_eh_cmd_timeout_table in libata-eh.c.
356 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7,
358 /* Horkage types. May be set by libata or controller on drives
359 (some horkage may be drive/controller pair dependent */
361 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
362 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
363 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
364 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
365 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
366 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
367 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
368 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
369 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
370 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
371 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
372 not multiple of 16 bytes */
373 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
374 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
375 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
376 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
377 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
378 ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */
379 ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */
380 ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */
381 ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
382 ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
383 ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
384 ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */
385 ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
386 ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */
387 ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */
388 ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */
389 ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */
390 ATA_HORKAGE_NO_LOG_DIR = (1 << 29), /* Do not read log directory */
391 ATA_HORKAGE_NO_FUA = (1 << 30), /* Do not use FUA */
393 /* DMA mask for user DMA control: User visible values; DO NOT
395 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
396 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
397 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
399 /* ATAPI command types */
400 ATAPI_READ = 0, /* READs */
401 ATAPI_WRITE = 1, /* WRITEs */
402 ATAPI_READ_CD = 2, /* READ CD [MSF] */
403 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
404 ATAPI_MISC = 4, /* the rest */
406 /* Timing constants */
407 ATA_TIMING_SETUP = (1 << 0),
408 ATA_TIMING_ACT8B = (1 << 1),
409 ATA_TIMING_REC8B = (1 << 2),
410 ATA_TIMING_CYC8B = (1 << 3),
411 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
413 ATA_TIMING_ACTIVE = (1 << 4),
414 ATA_TIMING_RECOVER = (1 << 5),
415 ATA_TIMING_DMACK_HOLD = (1 << 6),
416 ATA_TIMING_CYCLE = (1 << 7),
417 ATA_TIMING_UDMA = (1 << 8),
418 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
419 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
420 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
421 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
425 ATA_ACPI_FILTER_SETXFER = 1 << 0,
426 ATA_ACPI_FILTER_LOCK = 1 << 1,
427 ATA_ACPI_FILTER_DIPM = 1 << 2,
428 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
429 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
431 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
432 ATA_ACPI_FILTER_LOCK |
433 ATA_ACPI_FILTER_DIPM,
437 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO,
438 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA,
439 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA,
442 enum hsm_task_states {
443 HSM_ST_IDLE, /* no command on going */
444 HSM_ST_FIRST, /* (waiting the device to)
445 write CDB or first data block */
446 HSM_ST, /* (waiting the device to) transfer data */
447 HSM_ST_LAST, /* (waiting the device to) complete command */
448 HSM_ST_ERR, /* error */
451 enum ata_completion_errors {
452 AC_ERR_OK = 0, /* no error */
453 AC_ERR_DEV = (1 << 0), /* device reported error */
454 AC_ERR_HSM = (1 << 1), /* host state machine violation */
455 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
456 AC_ERR_MEDIA = (1 << 3), /* media error */
457 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
458 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
459 AC_ERR_SYSTEM = (1 << 6), /* system error */
460 AC_ERR_INVALID = (1 << 7), /* invalid argument */
461 AC_ERR_OTHER = (1 << 8), /* unknown */
462 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
463 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
467 * Link power management policy: If you alter this, you also need to
468 * alter libata-scsi.c (for the ascii descriptions)
470 enum ata_lpm_policy {
474 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
475 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
476 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
480 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
481 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
482 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */
485 /* forward declarations */
487 struct ata_port_operations;
490 struct ata_queued_cmd;
493 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
494 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
495 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
496 unsigned long deadline);
497 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
499 extern struct device_attribute dev_attr_unload_heads;
500 #ifdef CONFIG_SATA_HOST
501 extern struct device_attribute dev_attr_link_power_management_policy;
502 extern struct device_attribute dev_attr_ncq_prio_supported;
503 extern struct device_attribute dev_attr_ncq_prio_enable;
504 extern struct device_attribute dev_attr_em_message_type;
505 extern struct device_attribute dev_attr_em_message;
506 extern struct device_attribute dev_attr_sw_activity;
515 struct ata_taskfile {
516 unsigned long flags; /* ATA_TFLAG_xxx */
517 u8 protocol; /* ATA_PROT_xxx */
519 u8 ctl; /* control reg */
521 u8 hob_feature; /* additional data */
522 u8 hob_nsect; /* to support LBA48 */
543 u32 auxiliary; /* auxiliary field */
544 /* from SATA 3.1 and */
548 #ifdef CONFIG_ATA_SFF
550 void __iomem *cmd_addr;
551 void __iomem *data_addr;
552 void __iomem *error_addr;
553 void __iomem *feature_addr;
554 void __iomem *nsect_addr;
555 void __iomem *lbal_addr;
556 void __iomem *lbam_addr;
557 void __iomem *lbah_addr;
558 void __iomem *device_addr;
559 void __iomem *status_addr;
560 void __iomem *command_addr;
561 void __iomem *altstatus_addr;
562 void __iomem *ctl_addr;
563 #ifdef CONFIG_ATA_BMDMA
564 void __iomem *bmdma_addr;
565 #endif /* CONFIG_ATA_BMDMA */
566 void __iomem *scr_addr;
568 #endif /* CONFIG_ATA_SFF */
573 void __iomem * const *iomap;
574 unsigned int n_ports;
575 unsigned int n_tags; /* nr of NCQ tags */
577 struct ata_port_operations *ops;
581 struct mutex eh_mutex;
582 struct task_struct *eh_owner;
584 struct ata_port *simplex_claimed; /* channel owning the DMA */
585 struct ata_port *ports[];
588 struct ata_queued_cmd {
590 struct ata_device *dev;
592 struct scsi_cmnd *scsicmd;
593 void (*scsidone)(struct scsi_cmnd *);
595 struct ata_taskfile tf;
596 u8 cdb[ATAPI_CDB_LEN];
598 unsigned long flags; /* ATA_QCFLAG_xxx */
599 unsigned int tag; /* libata core tag */
600 unsigned int hw_tag; /* driver tag */
602 unsigned int orig_n_elem;
606 unsigned int sect_size;
609 unsigned int extrabytes;
610 unsigned int curbytes;
612 struct scatterlist sgent;
614 struct scatterlist *sg;
616 struct scatterlist *cursg;
617 unsigned int cursg_ofs;
619 unsigned int err_mask;
620 struct ata_taskfile result_tf;
621 ata_qc_cb_t complete_fn;
627 struct ata_port_stats {
628 unsigned long unhandled_irq;
629 unsigned long idle_irq;
630 unsigned long rw_reqbuf;
633 struct ata_ering_entry {
635 unsigned int err_mask;
641 struct ata_ering_entry ring[ATA_ERING_SIZE];
646 u8 num_storage_elements;
653 struct ata_cpr cpr[];
657 struct ata_link *link;
658 unsigned int devno; /* 0 or 1 */
659 unsigned int horkage; /* List of broken features */
660 unsigned long flags; /* ATA_DFLAG_xxx */
661 struct scsi_device *sdev; /* attached SCSI device */
663 #ifdef CONFIG_ATA_ACPI
664 union acpi_object *gtf_cache;
665 unsigned int gtf_filter;
667 #ifdef CONFIG_SATA_ZPODD
671 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
672 u64 n_sectors; /* size of device, if ATA */
673 u64 n_native_sectors; /* native size, if ATA */
674 unsigned int class; /* ATA_DEV_xxx */
675 unsigned long unpark_deadline;
680 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
682 unsigned int multi_count; /* sectors count for
683 READ/WRITE MULTIPLE */
684 unsigned int max_sectors; /* per-device max sectors */
685 unsigned int cdb_len;
687 /* per-dev xfer mask */
688 unsigned int pio_mask;
689 unsigned int mwdma_mask;
690 unsigned int udma_mask;
692 /* for CHS addressing */
693 u16 cylinders; /* Number of cylinders */
694 u16 heads; /* Number of heads */
695 u16 sectors; /* Number of sectors per track */
698 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
699 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
700 } ____cacheline_aligned;
702 /* DEVSLP Timing Variables from Identify Device Data Log */
703 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
705 /* NCQ send and receive log subcommand support */
706 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
707 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
709 /* ZAC zone configuration */
711 u32 zac_zones_optimal_open;
712 u32 zac_zones_optimal_nonseq;
713 u32 zac_zones_max_open;
715 /* Concurrent positioning ranges */
716 struct ata_cpr_log *cpr_log;
718 /* Command Duration Limits log support */
719 u8 cdl[ATA_LOG_CDL_SIZE];
723 /* ering is CLEAR_END, read comment above CLEAR_END */
724 struct ata_ering ering;
727 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
728 * cleared to zero on ata_dev_init().
730 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
731 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
734 struct ata_device *dev; /* offending device */
735 u32 serror; /* SError from LLDD */
736 unsigned int err_mask; /* port-wide err_mask */
737 unsigned int action; /* ATA_EH_* action mask */
738 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
739 unsigned int flags; /* ATA_EHI_* flags */
741 unsigned int probe_mask;
743 char desc[ATA_EH_DESC_LEN];
747 struct ata_eh_context {
748 struct ata_eh_info i;
749 int tries[ATA_MAX_DEVICES];
750 int cmd_timeout_idx[ATA_MAX_DEVICES]
751 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
752 unsigned int classes[ATA_MAX_DEVICES];
753 unsigned int did_probe_mask;
754 unsigned int unloaded_mask;
755 unsigned int saved_ncq_enabled;
756 u8 saved_xfer_mode[ATA_MAX_DEVICES];
757 /* timestamp for the last reset attempt or success */
758 unsigned long last_reset;
761 struct ata_acpi_drive
767 struct ata_acpi_gtm {
768 struct ata_acpi_drive drive[2];
774 int pmp; /* port multiplier port # */
777 unsigned int active_tag; /* active tag on this link */
778 u32 sactive; /* active NCQ commands */
780 unsigned int flags; /* ATA_LFLAG_xxx */
782 u32 saved_scontrol; /* SControl on probe */
783 unsigned int hw_sata_spd_limit;
784 unsigned int sata_spd_limit;
785 unsigned int sata_spd; /* current SATA PHY speed */
786 enum ata_lpm_policy lpm_policy;
788 /* record runtime error info, protected by host_set lock */
789 struct ata_eh_info eh_info;
791 struct ata_eh_context eh_context;
793 struct ata_device device[ATA_MAX_DEVICES];
795 unsigned long last_lpm_change; /* when last LPM change happened */
797 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
798 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
801 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
802 struct ata_port_operations *ops;
804 /* Flags owned by the EH context. Only EH should touch these once the
806 unsigned long flags; /* ATA_FLAG_xxx */
807 /* Flags that change dynamically, protected by ap->lock */
808 unsigned int pflags; /* ATA_PFLAG_xxx */
809 unsigned int print_id; /* user visible unique port ID */
810 unsigned int local_port_no; /* host local port num */
811 unsigned int port_no; /* 0 based port no. inside the host */
813 #ifdef CONFIG_ATA_SFF
814 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
815 u8 ctl; /* cache of ATA control register */
816 u8 last_ctl; /* Cache last written value */
817 struct ata_link* sff_pio_task_link; /* link currently used */
818 struct delayed_work sff_pio_task;
819 #ifdef CONFIG_ATA_BMDMA
820 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
821 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
822 #endif /* CONFIG_ATA_BMDMA */
823 #endif /* CONFIG_ATA_SFF */
825 unsigned int pio_mask;
826 unsigned int mwdma_mask;
827 unsigned int udma_mask;
828 unsigned int cbl; /* cable type; ATA_CBL_xxx */
830 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1];
832 int nr_active_links; /* #links with active qcs */
834 struct ata_link link; /* host default link */
835 struct ata_link *slave_link; /* see ata_slave_link_init() */
837 int nr_pmp_links; /* nr of available PMP links */
838 struct ata_link *pmp_link; /* array of PMP links */
839 struct ata_link *excl_link; /* for PMP qc exclusion */
841 struct ata_port_stats stats;
842 struct ata_host *host;
846 struct mutex scsi_scan_mutex;
847 struct delayed_work hotplug_task;
848 struct delayed_work scsi_rescan_task;
850 unsigned int hsm_task_state;
852 struct list_head eh_done_q;
853 wait_queue_head_t eh_wait_q;
855 struct completion park_req_pending;
857 pm_message_t pm_mesg;
858 enum ata_lpm_policy target_lpm_policy;
860 struct timer_list fastdrain_timer;
861 unsigned int fastdrain_cnt;
863 async_cookie_t cookie;
868 #ifdef CONFIG_ATA_ACPI
869 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
873 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
876 /* The following initializer overrides a method to NULL whether one of
877 * its parent has the method defined or not. This is equivalent to
878 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
879 * expression and thus can't be used as an initializer.
881 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
883 struct ata_port_operations {
887 int (*qc_defer)(struct ata_queued_cmd *qc);
888 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
889 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
890 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
891 void (*qc_fill_rtf)(struct ata_queued_cmd *qc);
892 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask);
895 * Configuration and exception handling
897 int (*cable_detect)(struct ata_port *ap);
898 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask);
899 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
900 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
901 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
902 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf,
905 void (*dev_config)(struct ata_device *dev);
907 void (*freeze)(struct ata_port *ap);
908 void (*thaw)(struct ata_port *ap);
909 ata_prereset_fn_t prereset;
910 ata_reset_fn_t softreset;
911 ata_reset_fn_t hardreset;
912 ata_postreset_fn_t postreset;
913 ata_prereset_fn_t pmp_prereset;
914 ata_reset_fn_t pmp_softreset;
915 ata_reset_fn_t pmp_hardreset;
916 ata_postreset_fn_t pmp_postreset;
917 void (*error_handler)(struct ata_port *ap);
918 void (*lost_interrupt)(struct ata_port *ap);
919 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
920 void (*sched_eh)(struct ata_port *ap);
921 void (*end_eh)(struct ata_port *ap);
926 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
927 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
928 void (*pmp_attach)(struct ata_port *ap);
929 void (*pmp_detach)(struct ata_port *ap);
930 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
934 * Start, stop, suspend and resume
936 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
937 int (*port_resume)(struct ata_port *ap);
938 int (*port_start)(struct ata_port *ap);
939 void (*port_stop)(struct ata_port *ap);
940 void (*host_stop)(struct ata_host *host);
942 #ifdef CONFIG_ATA_SFF
944 * SFF / taskfile oriented ops
946 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
947 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
948 u8 (*sff_check_status)(struct ata_port *ap);
949 u8 (*sff_check_altstatus)(struct ata_port *ap);
950 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
951 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
952 void (*sff_exec_command)(struct ata_port *ap,
953 const struct ata_taskfile *tf);
954 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
955 unsigned char *buf, unsigned int buflen, int rw);
956 void (*sff_irq_on)(struct ata_port *);
957 bool (*sff_irq_check)(struct ata_port *);
958 void (*sff_irq_clear)(struct ata_port *);
959 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
961 #ifdef CONFIG_ATA_BMDMA
962 void (*bmdma_setup)(struct ata_queued_cmd *qc);
963 void (*bmdma_start)(struct ata_queued_cmd *qc);
964 void (*bmdma_stop)(struct ata_queued_cmd *qc);
965 u8 (*bmdma_status)(struct ata_port *ap);
966 #endif /* CONFIG_ATA_BMDMA */
967 #endif /* CONFIG_ATA_SFF */
969 ssize_t (*em_show)(struct ata_port *ap, char *buf);
970 ssize_t (*em_store)(struct ata_port *ap, const char *message,
972 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
973 ssize_t (*sw_activity_store)(struct ata_device *dev,
974 enum sw_activity val);
975 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
979 * ->inherits must be the last field and all the preceding
980 * fields must be pointers.
982 const struct ata_port_operations *inherits;
985 struct ata_port_info {
987 unsigned long link_flags;
988 unsigned int pio_mask;
989 unsigned int mwdma_mask;
990 unsigned int udma_mask;
991 struct ata_port_operations *port_ops;
996 unsigned short mode; /* ATA mode */
997 unsigned short setup; /* t1 */
998 unsigned short act8b; /* t2 for 8-bit I/O */
999 unsigned short rec8b; /* t2i for 8-bit I/O */
1000 unsigned short cyc8b; /* t0 for 8-bit I/O */
1001 unsigned short active; /* t2 or tD */
1002 unsigned short recover; /* t2i or tK */
1003 unsigned short dmack_hold; /* tj */
1004 unsigned short cycle; /* t0 */
1005 unsigned short udma; /* t2CYCTYP/2 */
1009 * Core layer - drivers/ata/libata-core.c
1011 extern struct ata_port_operations ata_dummy_port_ops;
1012 extern const struct ata_port_info ata_dummy_port_info;
1014 static inline bool ata_is_atapi(u8 prot)
1016 return prot & ATA_PROT_FLAG_ATAPI;
1019 static inline bool ata_is_pio(u8 prot)
1021 return prot & ATA_PROT_FLAG_PIO;
1024 static inline bool ata_is_dma(u8 prot)
1026 return prot & ATA_PROT_FLAG_DMA;
1029 static inline bool ata_is_ncq(u8 prot)
1031 return prot & ATA_PROT_FLAG_NCQ;
1034 static inline bool ata_is_data(u8 prot)
1036 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1039 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1041 return (tf->command == ATA_CMD_READ_MULTI) ||
1042 (tf->command == ATA_CMD_WRITE_MULTI) ||
1043 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1044 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1045 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1048 static inline int ata_port_is_dummy(struct ata_port *ap)
1050 return ap->ops == &ata_dummy_port_ops;
1053 static inline bool ata_port_is_frozen(const struct ata_port *ap)
1055 return ap->pflags & ATA_PFLAG_FROZEN;
1058 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1059 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1060 int (*check_ready)(struct ata_link *link));
1061 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1062 unsigned long deadline);
1063 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1065 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
1066 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1067 const struct ata_port_info * const * ppi, int n_ports);
1068 extern void ata_host_get(struct ata_host *host);
1069 extern void ata_host_put(struct ata_host *host);
1070 extern int ata_host_start(struct ata_host *host);
1071 extern int ata_host_register(struct ata_host *host,
1072 const struct scsi_host_template *sht);
1073 extern int ata_host_activate(struct ata_host *host, int irq,
1074 irq_handler_t irq_handler, unsigned long irq_flags,
1075 const struct scsi_host_template *sht);
1076 extern void ata_host_detach(struct ata_host *host);
1077 extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1078 extern int ata_scsi_detect(struct scsi_host_template *sht);
1079 extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
1081 #ifdef CONFIG_COMPAT
1082 #define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
1084 #define ATA_SCSI_COMPAT_IOCTL /* empty */
1086 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1087 #if IS_REACHABLE(CONFIG_ATA)
1088 bool ata_scsi_dma_need_drain(struct request *rq);
1090 #define ata_scsi_dma_need_drain NULL
1092 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1093 unsigned int cmd, void __user *arg);
1094 extern bool ata_link_online(struct ata_link *link);
1095 extern bool ata_link_offline(struct ata_link *link);
1097 extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1098 extern void ata_host_resume(struct ata_host *host);
1099 extern void ata_sas_port_suspend(struct ata_port *ap);
1100 extern void ata_sas_port_resume(struct ata_port *ap);
1102 static inline void ata_sas_port_suspend(struct ata_port *ap)
1105 static inline void ata_sas_port_resume(struct ata_port *ap)
1109 extern int ata_ratelimit(void);
1110 extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1111 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1112 u32 val, unsigned int interval, unsigned int timeout);
1113 extern int atapi_cmd_type(u8 opcode);
1114 extern unsigned int ata_pack_xfermask(unsigned int pio_mask,
1115 unsigned int mwdma_mask,
1116 unsigned int udma_mask);
1117 extern void ata_unpack_xfermask(unsigned int xfer_mask,
1118 unsigned int *pio_mask,
1119 unsigned int *mwdma_mask,
1120 unsigned int *udma_mask);
1121 extern u8 ata_xfer_mask2mode(unsigned int xfer_mask);
1122 extern unsigned int ata_xfer_mode2mask(u8 xfer_mode);
1123 extern int ata_xfer_mode2shift(u8 xfer_mode);
1124 extern const char *ata_mode_string(unsigned int xfer_mask);
1125 extern unsigned int ata_id_xfermask(const u16 *id);
1126 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1127 extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
1128 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1129 unsigned int n_elem);
1130 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1131 extern unsigned int ata_port_classify(struct ata_port *ap,
1132 const struct ata_taskfile *tf);
1133 extern void ata_dev_disable(struct ata_device *adev);
1134 extern void ata_id_string(const u16 *id, unsigned char *s,
1135 unsigned int ofs, unsigned int len);
1136 extern void ata_id_c_string(const u16 *id, unsigned char *s,
1137 unsigned int ofs, unsigned int len);
1138 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1139 struct ata_taskfile *tf, __le16 *id);
1140 extern void ata_qc_complete(struct ata_queued_cmd *qc);
1141 extern u64 ata_qc_get_active(struct ata_port *ap);
1142 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1143 extern int ata_std_bios_param(struct scsi_device *sdev,
1144 struct block_device *bdev,
1145 sector_t capacity, int geom[]);
1146 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1147 extern int ata_scsi_slave_config(struct scsi_device *sdev);
1148 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1149 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1151 extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1153 extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1154 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1155 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1156 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1159 * SATA specific code - drivers/ata/libata-sata.c
1161 #ifdef CONFIG_SATA_HOST
1162 extern const unsigned int sata_deb_timing_normal[];
1163 extern const unsigned int sata_deb_timing_hotplug[];
1164 extern const unsigned int sata_deb_timing_long[];
1166 static inline const unsigned int *
1167 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1169 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1170 return sata_deb_timing_hotplug;
1172 return sata_deb_timing_normal;
1175 extern int sata_scr_valid(struct ata_link *link);
1176 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1177 extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1178 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1179 extern int sata_set_spd(struct ata_link *link);
1180 extern int sata_link_hardreset(struct ata_link *link,
1181 const unsigned int *timing, unsigned long deadline,
1182 bool *online, int (*check_ready)(struct ata_link *));
1183 extern int sata_link_resume(struct ata_link *link, const unsigned int *params,
1184 unsigned long deadline);
1185 extern int ata_eh_read_sense_success_ncq_log(struct ata_link *link);
1186 extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1188 static inline const unsigned int *
1189 sata_ehc_deb_timing(struct ata_eh_context *ehc)
1193 static inline int sata_scr_valid(struct ata_link *link) { return 0; }
1194 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
1198 static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
1202 static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
1206 static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
1207 static inline int sata_link_hardreset(struct ata_link *link,
1208 const unsigned int *timing,
1209 unsigned long deadline,
1211 int (*check_ready)(struct ata_link *))
1217 static inline int sata_link_resume(struct ata_link *link,
1218 const unsigned int *params,
1219 unsigned long deadline)
1223 static inline int ata_eh_read_sense_success_ncq_log(struct ata_link *link)
1227 static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
1229 extern int sata_link_debounce(struct ata_link *link,
1230 const unsigned int *params, unsigned long deadline);
1231 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1233 extern int ata_slave_link_init(struct ata_port *ap);
1234 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
1235 struct ata_port_info *, struct Scsi_Host *);
1236 extern void ata_port_probe(struct ata_port *ap);
1237 extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
1238 extern void ata_sas_tport_delete(struct ata_port *ap);
1239 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
1240 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1241 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1242 u8 pmp, int is_cmd, u8 *fis);
1243 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1244 extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
1245 extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1246 extern int sata_async_notification(struct ata_port *ap);
1248 extern int ata_cable_40wire(struct ata_port *ap);
1249 extern int ata_cable_80wire(struct ata_port *ap);
1250 extern int ata_cable_sata(struct ata_port *ap);
1251 extern int ata_cable_ignore(struct ata_port *ap);
1252 extern int ata_cable_unknown(struct ata_port *ap);
1254 /* Timing helpers */
1255 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1256 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1263 unsigned int reg; /* PCI config register to read */
1264 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1269 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1270 extern void ata_pci_shutdown_one(struct pci_dev *pdev);
1271 extern void ata_pci_remove_one(struct pci_dev *pdev);
1274 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1275 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1276 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1277 extern int ata_pci_device_resume(struct pci_dev *pdev);
1278 #endif /* CONFIG_PM */
1279 #endif /* CONFIG_PCI */
1281 struct platform_device;
1283 extern void ata_platform_remove_one(struct platform_device *pdev);
1286 * ACPI - drivers/ata/libata-acpi.c
1288 #ifdef CONFIG_ATA_ACPI
1289 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1291 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1292 return &ap->__acpi_init_gtm;
1295 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1296 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1297 unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1298 const struct ata_acpi_gtm *gtm);
1299 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1301 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1306 static inline int ata_acpi_stm(const struct ata_port *ap,
1307 struct ata_acpi_gtm *stm)
1312 static inline int ata_acpi_gtm(const struct ata_port *ap,
1313 struct ata_acpi_gtm *stm)
1318 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1319 const struct ata_acpi_gtm *gtm)
1324 static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1325 const struct ata_acpi_gtm *gtm)
1332 * EH - drivers/ata/libata-eh.c
1334 extern void ata_port_schedule_eh(struct ata_port *ap);
1335 extern void ata_port_wait_eh(struct ata_port *ap);
1336 extern int ata_link_abort(struct ata_link *link);
1337 extern int ata_port_abort(struct ata_port *ap);
1338 extern int ata_port_freeze(struct ata_port *ap);
1340 extern void ata_eh_freeze_port(struct ata_port *ap);
1341 extern void ata_eh_thaw_port(struct ata_port *ap);
1343 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1344 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1346 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1347 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1348 ata_postreset_fn_t postreset);
1349 extern void ata_std_error_handler(struct ata_port *ap);
1350 extern void ata_std_sched_eh(struct ata_port *ap);
1351 extern void ata_std_end_eh(struct ata_port *ap);
1352 extern int ata_link_nr_enabled(struct ata_link *link);
1355 * Base operations to inherit from and initializers for sht
1359 * base : Common to all libata drivers.
1360 * sata : SATA controllers w/ native interface.
1361 * pmp : SATA controllers w/ PMP support.
1362 * sff : SFF ATA controllers w/o BMDMA support.
1363 * bmdma : SFF ATA controllers w/ BMDMA support.
1367 * BASE : Common to all libata drivers. The user must set
1368 * sg_tablesize and dma_boundary.
1369 * PIO : SFF ATA controllers w/ only PIO support.
1370 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1371 * dma_boundary are set to BMDMA limits.
1372 * NCQ : SATA controllers supporting NCQ. The user must set
1373 * sg_tablesize, dma_boundary and can_queue.
1375 extern const struct ata_port_operations ata_base_port_ops;
1376 extern const struct ata_port_operations sata_port_ops;
1377 extern const struct attribute_group *ata_common_sdev_groups[];
1380 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1381 * by the edge drivers. Because the 'module' field of sht must be the
1382 * edge driver's module reference, otherwise the driver can be unloaded
1383 * even if the scsi_device is being accessed.
1385 #define __ATA_BASE_SHT(drv_name) \
1386 .module = THIS_MODULE, \
1388 .ioctl = ata_scsi_ioctl, \
1389 ATA_SCSI_COMPAT_IOCTL \
1390 .queuecommand = ata_scsi_queuecmd, \
1391 .dma_need_drain = ata_scsi_dma_need_drain, \
1392 .this_id = ATA_SHT_THIS_ID, \
1393 .emulated = ATA_SHT_EMULATED, \
1394 .proc_name = drv_name, \
1395 .slave_destroy = ata_scsi_slave_destroy, \
1396 .bios_param = ata_std_bios_param, \
1397 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\
1398 .max_sectors = ATA_MAX_SECTORS_LBA48
1400 #define ATA_SUBBASE_SHT(drv_name) \
1401 __ATA_BASE_SHT(drv_name), \
1402 .can_queue = ATA_DEF_QUEUE, \
1403 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1404 .slave_configure = ata_scsi_slave_config
1406 #define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \
1407 __ATA_BASE_SHT(drv_name), \
1408 .can_queue = drv_qd, \
1409 .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
1410 .slave_configure = ata_scsi_slave_config
1412 #define ATA_BASE_SHT(drv_name) \
1413 ATA_SUBBASE_SHT(drv_name), \
1414 .sdev_groups = ata_common_sdev_groups
1416 #ifdef CONFIG_SATA_HOST
1417 extern const struct attribute_group *ata_ncq_sdev_groups[];
1419 #define ATA_NCQ_SHT(drv_name) \
1420 ATA_SUBBASE_SHT(drv_name), \
1421 .sdev_groups = ata_ncq_sdev_groups, \
1422 .change_queue_depth = ata_scsi_change_queue_depth
1424 #define ATA_NCQ_SHT_QD(drv_name, drv_qd) \
1425 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \
1426 .sdev_groups = ata_ncq_sdev_groups, \
1427 .change_queue_depth = ata_scsi_change_queue_depth
1433 #ifdef CONFIG_SATA_PMP
1434 static inline bool sata_pmp_supported(struct ata_port *ap)
1436 return ap->flags & ATA_FLAG_PMP;
1439 static inline bool sata_pmp_attached(struct ata_port *ap)
1441 return ap->nr_pmp_links != 0;
1444 static inline bool ata_is_host_link(const struct ata_link *link)
1446 return link == &link->ap->link || link == link->ap->slave_link;
1448 #else /* CONFIG_SATA_PMP */
1449 static inline bool sata_pmp_supported(struct ata_port *ap)
1454 static inline bool sata_pmp_attached(struct ata_port *ap)
1459 static inline bool ata_is_host_link(const struct ata_link *link)
1463 #endif /* CONFIG_SATA_PMP */
1465 static inline int sata_srst_pmp(struct ata_link *link)
1467 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1468 return SATA_PMP_CTRL_PORT;
1472 #define ata_port_printk(level, ap, fmt, ...) \
1473 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__)
1475 #define ata_port_err(ap, fmt, ...) \
1476 ata_port_printk(err, ap, fmt, ##__VA_ARGS__)
1477 #define ata_port_warn(ap, fmt, ...) \
1478 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__)
1479 #define ata_port_notice(ap, fmt, ...) \
1480 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__)
1481 #define ata_port_info(ap, fmt, ...) \
1482 ata_port_printk(info, ap, fmt, ##__VA_ARGS__)
1483 #define ata_port_dbg(ap, fmt, ...) \
1484 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__)
1486 #define ata_link_printk(level, link, fmt, ...) \
1488 if (sata_pmp_attached((link)->ap) || \
1489 (link)->ap->slave_link) \
1490 pr_ ## level ("ata%u.%02u: " fmt, \
1491 (link)->ap->print_id, \
1495 pr_ ## level ("ata%u: " fmt, \
1496 (link)->ap->print_id, \
1500 #define ata_link_err(link, fmt, ...) \
1501 ata_link_printk(err, link, fmt, ##__VA_ARGS__)
1502 #define ata_link_warn(link, fmt, ...) \
1503 ata_link_printk(warn, link, fmt, ##__VA_ARGS__)
1504 #define ata_link_notice(link, fmt, ...) \
1505 ata_link_printk(notice, link, fmt, ##__VA_ARGS__)
1506 #define ata_link_info(link, fmt, ...) \
1507 ata_link_printk(info, link, fmt, ##__VA_ARGS__)
1508 #define ata_link_dbg(link, fmt, ...) \
1509 ata_link_printk(debug, link, fmt, ##__VA_ARGS__)
1511 #define ata_dev_printk(level, dev, fmt, ...) \
1512 pr_ ## level("ata%u.%02u: " fmt, \
1513 (dev)->link->ap->print_id, \
1514 (dev)->link->pmp + (dev)->devno, \
1517 #define ata_dev_err(dev, fmt, ...) \
1518 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__)
1519 #define ata_dev_warn(dev, fmt, ...) \
1520 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__)
1521 #define ata_dev_notice(dev, fmt, ...) \
1522 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__)
1523 #define ata_dev_info(dev, fmt, ...) \
1524 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__)
1525 #define ata_dev_dbg(dev, fmt, ...) \
1526 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__)
1528 void ata_print_version(const struct device *dev, const char *version);
1531 * ata_eh_info helpers
1533 extern __printf(2, 3)
1534 void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1535 extern __printf(2, 3)
1536 void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1537 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1539 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1541 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1542 ehi->flags |= ATA_EHI_HOTPLUGGED;
1543 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1544 ehi->err_mask |= AC_ERR_ATA_BUS;
1548 * port description helpers
1550 extern __printf(2, 3)
1551 void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1553 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1557 static inline bool ata_tag_internal(unsigned int tag)
1559 return tag == ATA_TAG_INTERNAL;
1562 static inline bool ata_tag_valid(unsigned int tag)
1564 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
1567 #define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1568 for ((tag) = 0; (tag) < (max_tag) && \
1569 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1572 * Internal use only, iterate commands ignoring error handling and
1575 #define ata_qc_for_each_raw(ap, qc, tag) \
1576 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1579 * Iterate all potential commands that can be queued
1581 #define ata_qc_for_each(ap, qc, tag) \
1582 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1585 * Like ata_qc_for_each, but with the internal tag included
1587 #define ata_qc_for_each_with_internal(ap, qc, tag) \
1588 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1593 static inline unsigned int ata_class_enabled(unsigned int class)
1595 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1596 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1597 class == ATA_DEV_ZAC;
1600 static inline unsigned int ata_class_disabled(unsigned int class)
1602 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1603 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1604 class == ATA_DEV_ZAC_UNSUP;
1607 static inline unsigned int ata_class_absent(unsigned int class)
1609 return !ata_class_enabled(class) && !ata_class_disabled(class);
1612 static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1614 return ata_class_enabled(dev->class);
1617 static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1619 return ata_class_disabled(dev->class);
1622 static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1624 return ata_class_absent(dev->class);
1630 static inline int ata_link_max_devices(const struct ata_link *link)
1632 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1637 static inline int ata_link_active(struct ata_link *link)
1639 return ata_tag_valid(link->active_tag) || link->sactive;
1645 * ATA_LITER_* constants are used to select link iteration mode and
1646 * ATA_DITER_* device iteration mode.
1648 * For a custom iteration directly using ata_{link|dev}_next(), if
1649 * @link or @dev, respectively, is NULL, the first element is
1650 * returned. @dev and @link can be any valid device or link and the
1651 * next element according to the iteration mode will be returned.
1652 * After the last element, NULL is returned.
1654 enum ata_link_iter_mode {
1655 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1656 * host link. no slave link */
1657 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1658 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1659 * slave link still comes after host link */
1662 enum ata_dev_iter_mode {
1664 ATA_DITER_ENABLED_REVERSE,
1666 ATA_DITER_ALL_REVERSE,
1669 extern struct ata_link *ata_link_next(struct ata_link *link,
1670 struct ata_port *ap,
1671 enum ata_link_iter_mode mode);
1673 extern struct ata_device *ata_dev_next(struct ata_device *dev,
1674 struct ata_link *link,
1675 enum ata_dev_iter_mode mode);
1678 * Shortcut notation for iterations
1680 * ata_for_each_link() iterates over each link of @ap according to
1681 * @mode. @link points to the current link in the loop. @link is
1682 * NULL after loop termination. ata_for_each_dev() works the same way
1683 * except that it iterates over each device of @link.
1685 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1686 * specified when using the following shorthand notations. Only the
1687 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1688 * specified. This not only increases brevity but also makes it
1689 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1691 #define ata_for_each_link(link, ap, mode) \
1692 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1693 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1695 #define ata_for_each_dev(dev, link, mode) \
1696 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1697 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1700 * ata_ncq_supported - Test whether NCQ is supported
1701 * @dev: ATA device to test
1704 * spin_lock_irqsave(host lock)
1707 * true if @dev supports NCQ, false otherwise.
1709 static inline bool ata_ncq_supported(struct ata_device *dev)
1711 if (!IS_ENABLED(CONFIG_SATA_HOST))
1713 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1717 * ata_ncq_enabled - Test whether NCQ is enabled
1718 * @dev: ATA device to test
1721 * spin_lock_irqsave(host lock)
1724 * true if NCQ is enabled for @dev, false otherwise.
1726 static inline bool ata_ncq_enabled(struct ata_device *dev)
1728 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF);
1731 static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1733 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1734 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1735 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1738 static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1740 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1741 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1742 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1745 static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1747 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1748 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1749 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1752 static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1754 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1755 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1758 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1760 qc->tf.ctl |= ATA_NIEN;
1763 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1766 if (ata_tag_valid(tag))
1767 return &ap->qcmd[tag];
1771 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1774 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1779 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1780 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE)
1786 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1788 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1791 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1793 memset(tf, 0, sizeof(*tf));
1795 #ifdef CONFIG_ATA_SFF
1796 tf->ctl = dev->link->ap->ctl;
1798 tf->ctl = ATA_DEVCTL_OBS;
1800 if (dev->devno == 0)
1801 tf->device = ATA_DEVICE_OBS;
1803 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1806 static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1808 qc->dma_dir = DMA_NONE;
1813 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1816 qc->sect_size = ATA_SECT_SIZE;
1818 ata_tf_init(qc->dev, &qc->tf);
1820 /* init result_tf such that it indicates normal completion */
1821 qc->result_tf.command = ATA_DRDY;
1822 qc->result_tf.feature = 0;
1825 static inline int ata_try_flush_cache(const struct ata_device *dev)
1827 return ata_id_wcache_enabled(dev->id) ||
1828 ata_id_has_flush(dev->id) ||
1829 ata_id_has_flush_ext(dev->id);
1832 static inline unsigned int ac_err_mask(u8 status)
1834 if (status & (ATA_BUSY | ATA_DRQ))
1836 if (status & (ATA_ERR | ATA_DF))
1841 static inline unsigned int __ac_err_mask(u8 status)
1843 unsigned int mask = ac_err_mask(status);
1845 return AC_ERR_OTHER;
1849 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1851 return *(struct ata_port **)&host->hostdata[0];
1854 static inline int ata_check_ready(u8 status)
1856 if (!(status & ATA_BUSY))
1859 /* 0xff indicates either no device or device not ready */
1866 static inline unsigned long ata_deadline(unsigned long from_jiffies,
1867 unsigned int timeout_msecs)
1869 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1872 /* Don't open code these in drivers as there are traps. Firstly the range may
1873 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1874 > UDMA_0. Dyma ddreigiau */
1876 static inline int ata_using_mwdma(struct ata_device *adev)
1878 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1883 static inline int ata_using_udma(struct ata_device *adev)
1885 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1890 static inline int ata_dma_enabled(struct ata_device *adev)
1892 return (adev->dma_mode == 0xFF ? 0 : 1);
1895 /**************************************************************************
1896 * PATA timings - drivers/ata/libata-pata-timings.c
1898 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1899 extern int ata_timing_compute(struct ata_device *, unsigned short,
1900 struct ata_timing *, int, int);
1901 extern void ata_timing_merge(const struct ata_timing *,
1902 const struct ata_timing *, struct ata_timing *,
1905 /**************************************************************************
1906 * PMP - drivers/ata/libata-pmp.c
1908 #ifdef CONFIG_SATA_PMP
1910 extern const struct ata_port_operations sata_pmp_port_ops;
1912 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1913 extern void sata_pmp_error_handler(struct ata_port *ap);
1915 #else /* CONFIG_SATA_PMP */
1917 #define sata_pmp_port_ops sata_port_ops
1918 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1919 #define sata_pmp_error_handler ata_std_error_handler
1921 #endif /* CONFIG_SATA_PMP */
1924 /**************************************************************************
1925 * SFF - drivers/ata/libata-sff.c
1927 #ifdef CONFIG_ATA_SFF
1929 extern const struct ata_port_operations ata_sff_port_ops;
1930 extern const struct ata_port_operations ata_bmdma32_port_ops;
1932 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1933 #define ATA_PIO_SHT(drv_name) \
1934 ATA_BASE_SHT(drv_name), \
1935 .sg_tablesize = LIBATA_MAX_PRD, \
1936 .dma_boundary = ATA_DMA_BOUNDARY
1938 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1939 extern u8 ata_sff_check_status(struct ata_port *ap);
1940 extern void ata_sff_pause(struct ata_port *ap);
1941 extern void ata_sff_dma_pause(struct ata_port *ap);
1942 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1943 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1944 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1945 extern void ata_sff_exec_command(struct ata_port *ap,
1946 const struct ata_taskfile *tf);
1947 extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
1948 unsigned char *buf, unsigned int buflen, int rw);
1949 extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
1950 unsigned char *buf, unsigned int buflen, int rw);
1951 extern void ata_sff_irq_on(struct ata_port *ap);
1952 extern void ata_sff_irq_clear(struct ata_port *ap);
1953 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1954 u8 status, int in_wq);
1955 extern void ata_sff_queue_work(struct work_struct *work);
1956 extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
1957 unsigned long delay);
1958 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1959 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1960 extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1961 extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1962 struct ata_queued_cmd *qc);
1963 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1964 extern void ata_sff_lost_interrupt(struct ata_port *ap);
1965 extern void ata_sff_freeze(struct ata_port *ap);
1966 extern void ata_sff_thaw(struct ata_port *ap);
1967 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1968 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1970 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1971 unsigned long deadline);
1972 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1973 unsigned long deadline);
1974 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1975 unsigned long deadline);
1976 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1977 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1978 extern void ata_sff_error_handler(struct ata_port *ap);
1979 extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1981 extern int ata_pci_sff_init_host(struct ata_host *host);
1982 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1983 const struct ata_port_info * const * ppi,
1984 struct ata_host **r_host);
1985 extern int ata_pci_sff_activate_host(struct ata_host *host,
1986 irq_handler_t irq_handler,
1987 const struct scsi_host_template *sht);
1988 extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1989 const struct ata_port_info * const * ppi,
1990 const struct scsi_host_template *sht, void *host_priv, int hflags);
1991 #endif /* CONFIG_PCI */
1993 #ifdef CONFIG_ATA_BMDMA
1995 extern const struct ata_port_operations ata_bmdma_port_ops;
1997 #define ATA_BMDMA_SHT(drv_name) \
1998 ATA_BASE_SHT(drv_name), \
1999 .sg_tablesize = LIBATA_MAX_PRD, \
2000 .dma_boundary = ATA_DMA_BOUNDARY
2002 extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
2003 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
2004 extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
2005 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
2006 struct ata_queued_cmd *qc);
2007 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
2008 extern void ata_bmdma_error_handler(struct ata_port *ap);
2009 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
2010 extern void ata_bmdma_irq_clear(struct ata_port *ap);
2011 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
2012 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
2013 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
2014 extern u8 ata_bmdma_status(struct ata_port *ap);
2015 extern int ata_bmdma_port_start(struct ata_port *ap);
2016 extern int ata_bmdma_port_start32(struct ata_port *ap);
2019 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
2020 extern void ata_pci_bmdma_init(struct ata_host *host);
2021 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
2022 const struct ata_port_info * const * ppi,
2023 struct ata_host **r_host);
2024 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
2025 const struct ata_port_info * const * ppi,
2026 const struct scsi_host_template *sht,
2027 void *host_priv, int hflags);
2028 #endif /* CONFIG_PCI */
2029 #endif /* CONFIG_ATA_BMDMA */
2032 * ata_sff_busy_wait - Wait for a port status register
2033 * @ap: Port to wait for.
2034 * @bits: bits that must be clear
2035 * @max: number of 10uS waits to perform
2037 * Waits up to max*10 microseconds for the selected bits in the port's
2038 * status register to be cleared.
2039 * Returns final value of status register.
2042 * Inherited from caller.
2044 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
2051 status = ap->ops->sff_check_status(ap);
2053 } while (status != 0xff && (status & bits) && (max > 0));
2059 * ata_wait_idle - Wait for a port to be idle.
2060 * @ap: Port to wait for.
2062 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
2063 * Returns final value of status register.
2066 * Inherited from caller.
2068 static inline u8 ata_wait_idle(struct ata_port *ap)
2070 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
2072 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
2073 ata_port_dbg(ap, "abnormal Status 0x%X\n", status);
2077 #endif /* CONFIG_ATA_SFF */
2079 #endif /* __LINUX_LIBATA_H__ */