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Merge tag 'pci-v6.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
[linux-2.6-block.git] / include / linux / libata.h
... / ...
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2005 Jeff Garzik
5 *
6 * libata documentation is available via 'make {ps|pdf}docs',
7 * as Documentation/driver-api/libata.rst
8 */
9
10#ifndef __LINUX_LIBATA_H__
11#define __LINUX_LIBATA_H__
12
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>
18#include <linux/io.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>
26
27/*
28 * Define if arch has non-standard setup. This is a _PCI_ standard
29 * not a legacy or ISA standard.
30 */
31#ifdef CONFIG_ATA_NONSTANDARD
32#include <asm/libata-portmap.h>
33#else
34#define ATA_PRIMARY_IRQ(dev) 14
35#define ATA_SECONDARY_IRQ(dev) 15
36#endif
37
38/*
39 * compile-time options: to be removed as soon as all the drivers are
40 * converted to the new debugging mechanism
41 */
42#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
43
44/* defines only for the constants which don't work well as enums */
45#define ATA_TAG_POISON 0xfafbfcfdU
46
47/*
48 * Quirk flags bits.
49 * ata_device->quirks is an unsigned int, so __ATA_QUIRK_MAX must not exceed 32.
50 */
51enum ata_quirks {
52 __ATA_QUIRK_DIAGNOSTIC, /* Failed boot diag */
53 __ATA_QUIRK_NODMA, /* DMA problems */
54 __ATA_QUIRK_NONCQ, /* Don't use NCQ */
55 __ATA_QUIRK_MAX_SEC_128, /* Limit max sects to 128 */
56 __ATA_QUIRK_BROKEN_HPA, /* Broken HPA */
57 __ATA_QUIRK_DISABLE, /* Disable it */
58 __ATA_QUIRK_HPA_SIZE, /* Native size off by one */
59 __ATA_QUIRK_IVB, /* cbl det validity bit bugs */
60 __ATA_QUIRK_STUCK_ERR, /* Stuck ERR on next PACKET */
61 __ATA_QUIRK_BRIDGE_OK, /* No bridge limits */
62 __ATA_QUIRK_ATAPI_MOD16_DMA, /* Use ATAPI DMA for commands that */
63 /* are not a multiple of 16 bytes */
64 __ATA_QUIRK_FIRMWARE_WARN, /* Firmware update warning */
65 __ATA_QUIRK_1_5_GBPS, /* Force 1.5 Gbps */
66 __ATA_QUIRK_NOSETXFER, /* Skip SETXFER, SATA only */
67 __ATA_QUIRK_BROKEN_FPDMA_AA, /* Skip AA */
68 __ATA_QUIRK_DUMP_ID, /* Dump IDENTIFY data */
69 __ATA_QUIRK_MAX_SEC_LBA48, /* Set max sects to 65535 */
70 __ATA_QUIRK_ATAPI_DMADIR, /* Device requires dmadir */
71 __ATA_QUIRK_NO_NCQ_TRIM, /* Do not use queued TRIM */
72 __ATA_QUIRK_NOLPM, /* Do not use LPM */
73 __ATA_QUIRK_WD_BROKEN_LPM, /* Some WDs have broken LPM */
74 __ATA_QUIRK_ZERO_AFTER_TRIM, /* Guarantees zero after trim */
75 __ATA_QUIRK_NO_DMA_LOG, /* Do not use DMA for log read */
76 __ATA_QUIRK_NOTRIM, /* Do not use TRIM */
77 __ATA_QUIRK_MAX_SEC_1024, /* Limit max sects to 1024 */
78 __ATA_QUIRK_MAX_TRIM_128M, /* Limit max trim size to 128M */
79 __ATA_QUIRK_NO_NCQ_ON_ATI, /* Disable NCQ on ATI chipset */
80 __ATA_QUIRK_NO_LPM_ON_ATI, /* Disable LPM on ATI chipset */
81 __ATA_QUIRK_NO_ID_DEV_LOG, /* Identify device log missing */
82 __ATA_QUIRK_NO_LOG_DIR, /* Do not read log directory */
83 __ATA_QUIRK_NO_FUA, /* Do not use FUA */
84
85 __ATA_QUIRK_MAX,
86};
87
88enum {
89 /* various global constants */
90 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
91 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
92 ATA_DEF_QUEUE = 1,
93 ATA_MAX_QUEUE = 32,
94 ATA_TAG_INTERNAL = ATA_MAX_QUEUE,
95 ATA_SHORT_PAUSE = 16,
96
97 ATAPI_MAX_DRAIN = 16 << 10,
98
99 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
100
101 ATA_SHT_EMULATED = 1,
102 ATA_SHT_THIS_ID = -1,
103
104 /* struct ata_taskfile flags */
105 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
106 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
107 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
108 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
109 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
110 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
111 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
112
113 /* struct ata_device stuff */
114 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
115 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
116 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
117 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
118 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
119 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
120 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
121 ATA_DFLAG_AN = (1 << 7), /* AN configured */
122 ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */
123 ATA_DFLAG_FUA = (1 << 9), /* device supports FUA */
124 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
125 ATA_DFLAG_NCQ_SEND_RECV = (1 << 11), /* device supports NCQ SEND and RECV */
126 ATA_DFLAG_NCQ_PRIO = (1 << 12), /* device supports NCQ priority */
127 ATA_DFLAG_CDL = (1 << 13), /* supports cmd duration limits */
128 ATA_DFLAG_CFG_MASK = (1 << 14) - 1,
129
130 ATA_DFLAG_PIO = (1 << 14), /* device limited to PIO mode */
131 ATA_DFLAG_NCQ_OFF = (1 << 15), /* device limited to non-NCQ mode */
132 ATA_DFLAG_SLEEPING = (1 << 16), /* device is sleeping */
133 ATA_DFLAG_DUBIOUS_XFER = (1 << 17), /* data transfer not verified */
134 ATA_DFLAG_NO_UNLOAD = (1 << 18), /* device doesn't support unload */
135 ATA_DFLAG_UNLOCK_HPA = (1 << 19), /* unlock HPA */
136 ATA_DFLAG_INIT_MASK = (1 << 20) - 1,
137
138 ATA_DFLAG_NCQ_PRIO_ENABLED = (1 << 20), /* Priority cmds sent to dev */
139 ATA_DFLAG_CDL_ENABLED = (1 << 21), /* cmd duration limits is enabled */
140 ATA_DFLAG_RESUMING = (1 << 22), /* Device is resuming */
141 ATA_DFLAG_DETACH = (1 << 24),
142 ATA_DFLAG_DETACHED = (1 << 25),
143 ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
144 ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
145 ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
146 ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
147 ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */
148
149 ATA_DFLAG_FEATURES_MASK = (ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \
150 ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \
151 ATA_DFLAG_NCQ_PRIO | ATA_DFLAG_FUA | \
152 ATA_DFLAG_CDL),
153
154 ATA_DEV_UNKNOWN = 0, /* unknown device */
155 ATA_DEV_ATA = 1, /* ATA device */
156 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
157 ATA_DEV_ATAPI = 3, /* ATAPI device */
158 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
159 ATA_DEV_PMP = 5, /* SATA port multiplier */
160 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
161 ATA_DEV_SEMB = 7, /* SEMB */
162 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
163 ATA_DEV_ZAC = 9, /* ZAC device */
164 ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */
165 ATA_DEV_NONE = 11, /* no device */
166
167 /* struct ata_link flags */
168 /* NOTE: struct ata_force_param currently stores lflags in u16 */
169 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
170 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
171 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
172 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
173 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
174 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
175 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
176 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
177 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
178 ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
179 ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
180 ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */
181
182 /* struct ata_port flags */
183 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
184 /* (doesn't imply presence) */
185 ATA_FLAG_SATA = (1 << 1),
186 ATA_FLAG_NO_LPM = (1 << 2), /* host not happy with LPM */
187 ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */
188 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
189 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
190 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
191 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
192 * doesn't handle PIO interrupts */
193 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
194 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
195 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
196 ATA_FLAG_DEBUGMSG = (1 << 13),
197 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
198 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
199 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
200 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
201 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
202 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
203 ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
204 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
205 * management */
206 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
207 * led */
208 ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
209 ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */
210
211 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
212
213
214 /* struct ata_port pflags */
215 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
216 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
217 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
218 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
219 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
220 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
221 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
222 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
223 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
224 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
225
226 ATA_PFLAG_RESUMING = (1 << 16), /* port is being resumed */
227 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
228 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
229 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
230
231 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
232 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
233 ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */
234
235 /* struct ata_queued_cmd flags */
236 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
237 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
238 ATA_QCFLAG_RTF_FILLED = (1 << 2), /* result TF has been filled */
239 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
240 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
241 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
242 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
243 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
244 ATA_QCFLAG_HAS_CDL = (1 << 8), /* qc has CDL a descriptor set */
245
246 ATA_QCFLAG_EH = (1 << 16), /* cmd aborted and owned by EH */
247 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
248 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
249 ATA_QCFLAG_EH_SUCCESS_CMD = (1 << 19), /* EH should fetch sense for this successful cmd */
250
251 /* host set flags */
252 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
253 ATA_HOST_STARTED = (1 << 1), /* Host started */
254 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
255 ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */
256
257 ATA_HOST_NO_PART = (1 << 4), /* Host does not support partial */
258 ATA_HOST_NO_SSC = (1 << 5), /* Host does not support slumber */
259 ATA_HOST_NO_DEVSLP = (1 << 6), /* Host does not support devslp */
260
261 /* bits 24:31 of host->flags are reserved for LLD specific flags */
262
263 /* Various lengths of time */
264 ATA_TMOUT_INTERNAL_QUICK = 5000,
265 ATA_TMOUT_MAX_PARK = 30000,
266
267 /*
268 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
269 * is too much without parallel probing. Use 2s if parallel
270 * probing is available, 800ms otherwise.
271 */
272 ATA_TMOUT_FF_WAIT_LONG = 2000,
273 ATA_TMOUT_FF_WAIT = 800,
274
275 /* Spec mandates to wait for ">= 2ms" before checking status
276 * after reset. We wait 150ms, because that was the magic
277 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
278 * the period of time between when the ATA command register is
279 * written, and then status is checked. Because waiting for
280 * "a while" before checking status is fine, post SRST, we
281 * perform this magic delay here as well.
282 *
283 * Old drivers/ide uses the 2mS rule and then waits for ready.
284 */
285 ATA_WAIT_AFTER_RESET = 150,
286
287 /* If PMP is supported, we have to do follow-up SRST. As some
288 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
289 * advised to wait only for the following duration before
290 * doing SRST.
291 */
292 ATA_TMOUT_PMP_SRST_WAIT = 10000,
293
294 /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
295 * be a spurious PHY event, so ignore the first PHY event that
296 * occurs within 10s after the policy change.
297 */
298 ATA_TMOUT_SPURIOUS_PHY = 10000,
299
300 /* ATA bus states */
301 BUS_UNKNOWN = 0,
302 BUS_DMA = 1,
303 BUS_IDLE = 2,
304 BUS_NOINTR = 3,
305 BUS_NODATA = 4,
306 BUS_TIMER = 5,
307 BUS_PIO = 6,
308 BUS_EDD = 7,
309 BUS_IDENTIFY = 8,
310 BUS_PACKET = 9,
311
312 /* SATA port states */
313 PORT_UNKNOWN = 0,
314 PORT_ENABLED = 1,
315 PORT_DISABLED = 2,
316
317 /* encoding various smaller bitmaps into a single
318 * unsigned int bitmap
319 */
320 ATA_NR_PIO_MODES = 7,
321 ATA_NR_MWDMA_MODES = 5,
322 ATA_NR_UDMA_MODES = 8,
323
324 ATA_SHIFT_PIO = 0,
325 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
326 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
327 ATA_SHIFT_PRIO = 6,
328
329 ATA_PRIO_HIGH = 2,
330 /* size of buffer to pad xfers ending on unaligned boundaries */
331 ATA_DMA_PAD_SZ = 4,
332
333 /* ering size */
334 ATA_ERING_SIZE = 32,
335
336 /* return values for ->qc_defer */
337 ATA_DEFER_LINK = 1,
338 ATA_DEFER_PORT = 2,
339
340 /* desc_len for ata_eh_info and context */
341 ATA_EH_DESC_LEN = 80,
342
343 /* reset / recovery action types */
344 ATA_EH_REVALIDATE = (1 << 0),
345 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
346 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
347 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
348 ATA_EH_ENABLE_LINK = (1 << 3),
349 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
350 ATA_EH_GET_SUCCESS_SENSE = (1 << 6), /* Get sense data for successful cmd */
351 ATA_EH_SET_ACTIVE = (1 << 7), /* Set a device to active power mode */
352
353 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK |
354 ATA_EH_GET_SUCCESS_SENSE | ATA_EH_SET_ACTIVE,
355 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
356 ATA_EH_ENABLE_LINK,
357
358 /* ata_eh_info->flags */
359 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
360 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
361 ATA_EHI_QUIET = (1 << 3), /* be quiet */
362 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
363
364 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
365 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
366 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
367 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
368 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
369 ATA_EHI_DID_PRINT_QUIRKS = (1 << 21), /* already printed quirks info */
370
371 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
372
373 /* mask of flags to transfer *to* the slave link */
374 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
375
376 /* max tries if error condition is still set after ->error_handler */
377 ATA_EH_MAX_TRIES = 5,
378
379 /* sometimes resuming a link requires several retries */
380 ATA_LINK_RESUME_TRIES = 5,
381
382 /* how hard are we gonna try to probe/recover devices */
383 ATA_EH_DEV_TRIES = 3,
384 ATA_EH_PMP_TRIES = 5,
385 ATA_EH_PMP_LINK_TRIES = 3,
386
387 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
388
389 /* This should match the actual table size of
390 * ata_eh_cmd_timeout_table in libata-eh.c.
391 */
392 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8,
393
394 /*
395 * Quirk flags: may be set by libata or controller drivers on drives.
396 * Some quirks may be drive/controller pair dependent.
397 */
398 ATA_QUIRK_DIAGNOSTIC = (1U << __ATA_QUIRK_DIAGNOSTIC),
399 ATA_QUIRK_NODMA = (1U << __ATA_QUIRK_NODMA),
400 ATA_QUIRK_NONCQ = (1U << __ATA_QUIRK_NONCQ),
401 ATA_QUIRK_MAX_SEC_128 = (1U << __ATA_QUIRK_MAX_SEC_128),
402 ATA_QUIRK_BROKEN_HPA = (1U << __ATA_QUIRK_BROKEN_HPA),
403 ATA_QUIRK_DISABLE = (1U << __ATA_QUIRK_DISABLE),
404 ATA_QUIRK_HPA_SIZE = (1U << __ATA_QUIRK_HPA_SIZE),
405 ATA_QUIRK_IVB = (1U << __ATA_QUIRK_IVB),
406 ATA_QUIRK_STUCK_ERR = (1U << __ATA_QUIRK_STUCK_ERR),
407 ATA_QUIRK_BRIDGE_OK = (1U << __ATA_QUIRK_BRIDGE_OK),
408 ATA_QUIRK_ATAPI_MOD16_DMA = (1U << __ATA_QUIRK_ATAPI_MOD16_DMA),
409 ATA_QUIRK_FIRMWARE_WARN = (1U << __ATA_QUIRK_FIRMWARE_WARN),
410 ATA_QUIRK_1_5_GBPS = (1U << __ATA_QUIRK_1_5_GBPS),
411 ATA_QUIRK_NOSETXFER = (1U << __ATA_QUIRK_NOSETXFER),
412 ATA_QUIRK_BROKEN_FPDMA_AA = (1U << __ATA_QUIRK_BROKEN_FPDMA_AA),
413 ATA_QUIRK_DUMP_ID = (1U << __ATA_QUIRK_DUMP_ID),
414 ATA_QUIRK_MAX_SEC_LBA48 = (1U << __ATA_QUIRK_MAX_SEC_LBA48),
415 ATA_QUIRK_ATAPI_DMADIR = (1U << __ATA_QUIRK_ATAPI_DMADIR),
416 ATA_QUIRK_NO_NCQ_TRIM = (1U << __ATA_QUIRK_NO_NCQ_TRIM),
417 ATA_QUIRK_NOLPM = (1U << __ATA_QUIRK_NOLPM),
418 ATA_QUIRK_WD_BROKEN_LPM = (1U << __ATA_QUIRK_WD_BROKEN_LPM),
419 ATA_QUIRK_ZERO_AFTER_TRIM = (1U << __ATA_QUIRK_ZERO_AFTER_TRIM),
420 ATA_QUIRK_NO_DMA_LOG = (1U << __ATA_QUIRK_NO_DMA_LOG),
421 ATA_QUIRK_NOTRIM = (1U << __ATA_QUIRK_NOTRIM),
422 ATA_QUIRK_MAX_SEC_1024 = (1U << __ATA_QUIRK_MAX_SEC_1024),
423 ATA_QUIRK_MAX_TRIM_128M = (1U << __ATA_QUIRK_MAX_TRIM_128M),
424 ATA_QUIRK_NO_NCQ_ON_ATI = (1U << __ATA_QUIRK_NO_NCQ_ON_ATI),
425 ATA_QUIRK_NO_LPM_ON_ATI = (1U << __ATA_QUIRK_NO_LPM_ON_ATI),
426 ATA_QUIRK_NO_ID_DEV_LOG = (1U << __ATA_QUIRK_NO_ID_DEV_LOG),
427 ATA_QUIRK_NO_LOG_DIR = (1U << __ATA_QUIRK_NO_LOG_DIR),
428 ATA_QUIRK_NO_FUA = (1U << __ATA_QUIRK_NO_FUA),
429
430 /* User visible DMA mask for DMA control. DO NOT renumber. */
431 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
432 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
433 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
434
435 /* ATAPI command types */
436 ATAPI_READ = 0, /* READs */
437 ATAPI_WRITE = 1, /* WRITEs */
438 ATAPI_READ_CD = 2, /* READ CD [MSF] */
439 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
440 ATAPI_MISC = 4, /* the rest */
441
442 /* Timing constants */
443 ATA_TIMING_SETUP = (1 << 0),
444 ATA_TIMING_ACT8B = (1 << 1),
445 ATA_TIMING_REC8B = (1 << 2),
446 ATA_TIMING_CYC8B = (1 << 3),
447 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
448 ATA_TIMING_CYC8B,
449 ATA_TIMING_ACTIVE = (1 << 4),
450 ATA_TIMING_RECOVER = (1 << 5),
451 ATA_TIMING_DMACK_HOLD = (1 << 6),
452 ATA_TIMING_CYCLE = (1 << 7),
453 ATA_TIMING_UDMA = (1 << 8),
454 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
455 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
456 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
457 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
458 ATA_TIMING_UDMA,
459
460 /* ACPI constants */
461 ATA_ACPI_FILTER_SETXFER = 1 << 0,
462 ATA_ACPI_FILTER_LOCK = 1 << 1,
463 ATA_ACPI_FILTER_DIPM = 1 << 2,
464 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
465 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
466
467 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
468 ATA_ACPI_FILTER_LOCK |
469 ATA_ACPI_FILTER_DIPM,
470};
471
472enum ata_xfer_mask {
473 ATA_MASK_PIO = ((1U << ATA_NR_PIO_MODES) - 1) << ATA_SHIFT_PIO,
474 ATA_MASK_MWDMA = ((1U << ATA_NR_MWDMA_MODES) - 1) << ATA_SHIFT_MWDMA,
475 ATA_MASK_UDMA = ((1U << ATA_NR_UDMA_MODES) - 1) << ATA_SHIFT_UDMA,
476};
477
478enum hsm_task_states {
479 HSM_ST_IDLE, /* no command on going */
480 HSM_ST_FIRST, /* (waiting the device to)
481 write CDB or first data block */
482 HSM_ST, /* (waiting the device to) transfer data */
483 HSM_ST_LAST, /* (waiting the device to) complete command */
484 HSM_ST_ERR, /* error */
485};
486
487enum ata_completion_errors {
488 AC_ERR_OK = 0, /* no error */
489 AC_ERR_DEV = (1 << 0), /* device reported error */
490 AC_ERR_HSM = (1 << 1), /* host state machine violation */
491 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
492 AC_ERR_MEDIA = (1 << 3), /* media error */
493 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
494 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
495 AC_ERR_SYSTEM = (1 << 6), /* system error */
496 AC_ERR_INVALID = (1 << 7), /* invalid argument */
497 AC_ERR_OTHER = (1 << 8), /* unknown */
498 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
499 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
500};
501
502/*
503 * Link power management policy: If you alter this, you also need to
504 * alter libata-sata.c (for the ascii descriptions)
505 */
506enum ata_lpm_policy {
507 ATA_LPM_UNKNOWN,
508 ATA_LPM_MAX_POWER,
509 ATA_LPM_MED_POWER,
510 ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
511 ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
512 ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
513};
514
515enum ata_lpm_hints {
516 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
517 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
518 ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */
519};
520
521/* forward declarations */
522struct scsi_device;
523struct ata_port_operations;
524struct ata_port;
525struct ata_link;
526struct ata_queued_cmd;
527
528/* typedefs */
529typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
530typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
531typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
532 unsigned long deadline);
533typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
534
535extern struct device_attribute dev_attr_unload_heads;
536#ifdef CONFIG_SATA_HOST
537extern struct device_attribute dev_attr_link_power_management_policy;
538extern struct device_attribute dev_attr_ncq_prio_supported;
539extern struct device_attribute dev_attr_ncq_prio_enable;
540extern struct device_attribute dev_attr_em_message_type;
541extern struct device_attribute dev_attr_em_message;
542extern struct device_attribute dev_attr_sw_activity;
543#endif
544
545enum sw_activity {
546 OFF,
547 BLINK_ON,
548 BLINK_OFF,
549};
550
551struct ata_taskfile {
552 unsigned long flags; /* ATA_TFLAG_xxx */
553 u8 protocol; /* ATA_PROT_xxx */
554
555 u8 ctl; /* control reg */
556
557 u8 hob_feature; /* additional data */
558 u8 hob_nsect; /* to support LBA48 */
559 u8 hob_lbal;
560 u8 hob_lbam;
561 u8 hob_lbah;
562
563 union {
564 u8 error;
565 u8 feature;
566 };
567 u8 nsect;
568 u8 lbal;
569 u8 lbam;
570 u8 lbah;
571
572 u8 device;
573
574 union {
575 u8 status;
576 u8 command;
577 };
578
579 u32 auxiliary; /* auxiliary field */
580 /* from SATA 3.1 and */
581 /* ATA-8 ACS-3 */
582};
583
584#ifdef CONFIG_ATA_SFF
585struct ata_ioports {
586 void __iomem *cmd_addr;
587 void __iomem *data_addr;
588 void __iomem *error_addr;
589 void __iomem *feature_addr;
590 void __iomem *nsect_addr;
591 void __iomem *lbal_addr;
592 void __iomem *lbam_addr;
593 void __iomem *lbah_addr;
594 void __iomem *device_addr;
595 void __iomem *status_addr;
596 void __iomem *command_addr;
597 void __iomem *altstatus_addr;
598 void __iomem *ctl_addr;
599#ifdef CONFIG_ATA_BMDMA
600 void __iomem *bmdma_addr;
601#endif /* CONFIG_ATA_BMDMA */
602 void __iomem *scr_addr;
603};
604#endif /* CONFIG_ATA_SFF */
605
606struct ata_host {
607 spinlock_t lock;
608 struct device *dev;
609 void __iomem * const *iomap;
610 unsigned int n_ports;
611 unsigned int n_tags; /* nr of NCQ tags */
612 void *private_data;
613 struct ata_port_operations *ops;
614 unsigned long flags;
615 struct kref kref;
616
617 struct mutex eh_mutex;
618 struct task_struct *eh_owner;
619
620 struct ata_port *simplex_claimed; /* channel owning the DMA */
621 struct ata_port *ports[];
622};
623
624struct ata_queued_cmd {
625 struct ata_port *ap;
626 struct ata_device *dev;
627
628 struct scsi_cmnd *scsicmd;
629 void (*scsidone)(struct scsi_cmnd *);
630
631 struct ata_taskfile tf;
632 u8 cdb[ATAPI_CDB_LEN];
633
634 unsigned long flags; /* ATA_QCFLAG_xxx */
635 unsigned int tag; /* libata core tag */
636 unsigned int hw_tag; /* driver tag */
637 unsigned int n_elem;
638 unsigned int orig_n_elem;
639
640 int dma_dir;
641
642 unsigned int sect_size;
643
644 unsigned int nbytes;
645 unsigned int extrabytes;
646 unsigned int curbytes;
647
648 struct scatterlist sgent;
649
650 struct scatterlist *sg;
651
652 struct scatterlist *cursg;
653 unsigned int cursg_ofs;
654
655 unsigned int err_mask;
656 struct ata_taskfile result_tf;
657 ata_qc_cb_t complete_fn;
658
659 void *private_data;
660 void *lldd_task;
661};
662
663struct ata_port_stats {
664 unsigned long unhandled_irq;
665 unsigned long idle_irq;
666 unsigned long rw_reqbuf;
667};
668
669struct ata_ering_entry {
670 unsigned int eflags;
671 unsigned int err_mask;
672 u64 timestamp;
673};
674
675struct ata_ering {
676 int cursor;
677 struct ata_ering_entry ring[ATA_ERING_SIZE];
678};
679
680struct ata_cpr {
681 u8 num;
682 u8 num_storage_elements;
683 u64 start_lba;
684 u64 num_lbas;
685};
686
687struct ata_cpr_log {
688 u8 nr_cpr;
689 struct ata_cpr cpr[] __counted_by(nr_cpr);
690};
691
692struct ata_cdl {
693 /*
694 * Buffer to cache the CDL log page 18h (command duration descriptors)
695 * for SCSI-ATA translation.
696 */
697 u8 desc_log_buf[ATA_LOG_CDL_SIZE];
698
699 /*
700 * Buffer to handle reading the sense data for successful NCQ Commands
701 * log page for commands using a CDL with one of the limits policy set
702 * to 0xD (successful completion with sense data available bit set).
703 */
704 u8 ncq_sense_log_buf[ATA_LOG_SENSE_NCQ_SIZE];
705};
706
707struct ata_device {
708 struct ata_link *link;
709 unsigned int devno; /* 0 or 1 */
710 unsigned int quirks; /* List of broken features */
711 unsigned long flags; /* ATA_DFLAG_xxx */
712 struct scsi_device *sdev; /* attached SCSI device */
713 void *private_data;
714#ifdef CONFIG_ATA_ACPI
715 union acpi_object *gtf_cache;
716 unsigned int gtf_filter;
717#endif
718#ifdef CONFIG_SATA_ZPODD
719 void *zpodd;
720#endif
721 struct device tdev;
722 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
723 u64 n_sectors; /* size of device, if ATA */
724 u64 n_native_sectors; /* native size, if ATA */
725 unsigned int class; /* ATA_DEV_xxx */
726 unsigned long unpark_deadline;
727
728 u8 pio_mode;
729 u8 dma_mode;
730 u8 xfer_mode;
731 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
732
733 unsigned int multi_count; /* sectors count for
734 READ/WRITE MULTIPLE */
735 unsigned int max_sectors; /* per-device max sectors */
736 unsigned int cdb_len;
737
738 /* per-dev xfer mask */
739 unsigned int pio_mask;
740 unsigned int mwdma_mask;
741 unsigned int udma_mask;
742
743 /* for CHS addressing */
744 u16 cylinders; /* Number of cylinders */
745 u16 heads; /* Number of heads */
746 u16 sectors; /* Number of sectors per track */
747
748 union {
749 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
750 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
751 } ____cacheline_aligned;
752
753 /* DEVSLP Timing Variables from Identify Device Data Log */
754 u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
755
756 /* NCQ send and receive log subcommand support */
757 u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
758 u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];
759
760 /* ZAC zone configuration */
761 u32 zac_zoned_cap;
762 u32 zac_zones_optimal_open;
763 u32 zac_zones_optimal_nonseq;
764 u32 zac_zones_max_open;
765
766 /* Concurrent positioning ranges */
767 struct ata_cpr_log *cpr_log;
768
769 /* Command Duration Limits support */
770 struct ata_cdl *cdl;
771
772 /* error history */
773 int spdn_cnt;
774 /* ering is CLEAR_END, read comment above CLEAR_END */
775 struct ata_ering ering;
776
777 /* For EH */
778 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
779};
780
781/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
782 * cleared to zero on ata_dev_init().
783 */
784#define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
785#define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
786
787struct ata_eh_info {
788 struct ata_device *dev; /* offending device */
789 u32 serror; /* SError from LLDD */
790 unsigned int err_mask; /* port-wide err_mask */
791 unsigned int action; /* ATA_EH_* action mask */
792 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
793 unsigned int flags; /* ATA_EHI_* flags */
794
795 unsigned int probe_mask;
796
797 char desc[ATA_EH_DESC_LEN];
798 int desc_len;
799};
800
801struct ata_eh_context {
802 struct ata_eh_info i;
803 int tries[ATA_MAX_DEVICES];
804 int cmd_timeout_idx[ATA_MAX_DEVICES]
805 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
806 unsigned int classes[ATA_MAX_DEVICES];
807 unsigned int did_probe_mask;
808 unsigned int unloaded_mask;
809 unsigned int saved_ncq_enabled;
810 u8 saved_xfer_mode[ATA_MAX_DEVICES];
811 /* timestamp for the last reset attempt or success */
812 unsigned long last_reset;
813};
814
815struct ata_acpi_drive
816{
817 u32 pio;
818 u32 dma;
819} __packed;
820
821struct ata_acpi_gtm {
822 struct ata_acpi_drive drive[2];
823 u32 flags;
824} __packed;
825
826struct ata_link {
827 struct ata_port *ap;
828 int pmp; /* port multiplier port # */
829
830 struct device tdev;
831 unsigned int active_tag; /* active tag on this link */
832 u32 sactive; /* active NCQ commands */
833
834 unsigned int flags; /* ATA_LFLAG_xxx */
835
836 u32 saved_scontrol; /* SControl on probe */
837 unsigned int hw_sata_spd_limit;
838 unsigned int sata_spd_limit;
839 unsigned int sata_spd; /* current SATA PHY speed */
840 enum ata_lpm_policy lpm_policy;
841
842 /* record runtime error info, protected by host_set lock */
843 struct ata_eh_info eh_info;
844 /* EH context */
845 struct ata_eh_context eh_context;
846
847 struct ata_device device[ATA_MAX_DEVICES];
848
849 unsigned long last_lpm_change; /* when last LPM change happened */
850};
851#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
852#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
853
854struct ata_port {
855 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
856 struct ata_port_operations *ops;
857 spinlock_t *lock;
858 /* Flags owned by the EH context. Only EH should touch these once the
859 port is active */
860 unsigned long flags; /* ATA_FLAG_xxx */
861 /* Flags that change dynamically, protected by ap->lock */
862 unsigned int pflags; /* ATA_PFLAG_xxx */
863 unsigned int print_id; /* user visible unique port ID */
864 unsigned int port_no; /* 0 based port no. inside the host */
865
866#ifdef CONFIG_ATA_SFF
867 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
868 u8 ctl; /* cache of ATA control register */
869 u8 last_ctl; /* Cache last written value */
870 struct ata_link* sff_pio_task_link; /* link currently used */
871 struct delayed_work sff_pio_task;
872#ifdef CONFIG_ATA_BMDMA
873 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
874 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
875#endif /* CONFIG_ATA_BMDMA */
876#endif /* CONFIG_ATA_SFF */
877
878 unsigned int pio_mask;
879 unsigned int mwdma_mask;
880 unsigned int udma_mask;
881 unsigned int cbl; /* cable type; ATA_CBL_xxx */
882
883 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1];
884 u64 qc_active;
885 int nr_active_links; /* #links with active qcs */
886
887 struct ata_link link; /* host default link */
888 struct ata_link *slave_link; /* see ata_slave_link_init() */
889
890 int nr_pmp_links; /* nr of available PMP links */
891 struct ata_link *pmp_link; /* array of PMP links */
892 struct ata_link *excl_link; /* for PMP qc exclusion */
893
894 struct ata_port_stats stats;
895 struct ata_host *host;
896 struct device *dev;
897 struct device tdev;
898
899 struct mutex scsi_scan_mutex;
900 struct delayed_work hotplug_task;
901 struct delayed_work scsi_rescan_task;
902
903 unsigned int hsm_task_state;
904
905 struct list_head eh_done_q;
906 wait_queue_head_t eh_wait_q;
907 int eh_tries;
908 struct completion park_req_pending;
909
910 pm_message_t pm_mesg;
911 enum ata_lpm_policy target_lpm_policy;
912
913 struct timer_list fastdrain_timer;
914 unsigned int fastdrain_cnt;
915
916 async_cookie_t cookie;
917
918 int em_message_type;
919 void *private_data;
920
921#ifdef CONFIG_ATA_ACPI
922 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
923#endif
924};
925
926/* The following initializer overrides a method to NULL whether one of
927 * its parent has the method defined or not. This is equivalent to
928 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
929 * expression and thus can't be used as an initializer.
930 */
931#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
932
933struct ata_port_operations {
934 /*
935 * Command execution
936 */
937 int (*qc_defer)(struct ata_queued_cmd *qc);
938 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
939 enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
940 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
941 void (*qc_fill_rtf)(struct ata_queued_cmd *qc);
942 void (*qc_ncq_fill_rtf)(struct ata_port *ap, u64 done_mask);
943
944 /*
945 * Configuration and exception handling
946 */
947 int (*cable_detect)(struct ata_port *ap);
948 unsigned int (*mode_filter)(struct ata_device *dev, unsigned int xfer_mask);
949 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
950 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
951 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
952 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf,
953 __le16 *id);
954
955 void (*dev_config)(struct ata_device *dev);
956
957 void (*freeze)(struct ata_port *ap);
958 void (*thaw)(struct ata_port *ap);
959 ata_prereset_fn_t prereset;
960 ata_reset_fn_t softreset;
961 ata_reset_fn_t hardreset;
962 ata_postreset_fn_t postreset;
963 ata_prereset_fn_t pmp_prereset;
964 ata_reset_fn_t pmp_softreset;
965 ata_reset_fn_t pmp_hardreset;
966 ata_postreset_fn_t pmp_postreset;
967 void (*error_handler)(struct ata_port *ap);
968 void (*lost_interrupt)(struct ata_port *ap);
969 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
970 void (*sched_eh)(struct ata_port *ap);
971 void (*end_eh)(struct ata_port *ap);
972
973 /*
974 * Optional features
975 */
976 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
977 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
978 void (*pmp_attach)(struct ata_port *ap);
979 void (*pmp_detach)(struct ata_port *ap);
980 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
981 unsigned hints);
982
983 /*
984 * Start, stop, suspend and resume
985 */
986 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
987 int (*port_resume)(struct ata_port *ap);
988 int (*port_start)(struct ata_port *ap);
989 void (*port_stop)(struct ata_port *ap);
990 void (*host_stop)(struct ata_host *host);
991
992#ifdef CONFIG_ATA_SFF
993 /*
994 * SFF / taskfile oriented ops
995 */
996 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
997 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
998 u8 (*sff_check_status)(struct ata_port *ap);
999 u8 (*sff_check_altstatus)(struct ata_port *ap);
1000 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
1001 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
1002 void (*sff_exec_command)(struct ata_port *ap,
1003 const struct ata_taskfile *tf);
1004 unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
1005 unsigned char *buf, unsigned int buflen, int rw);
1006 void (*sff_irq_on)(struct ata_port *);
1007 bool (*sff_irq_check)(struct ata_port *);
1008 void (*sff_irq_clear)(struct ata_port *);
1009 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
1010
1011#ifdef CONFIG_ATA_BMDMA
1012 void (*bmdma_setup)(struct ata_queued_cmd *qc);
1013 void (*bmdma_start)(struct ata_queued_cmd *qc);
1014 void (*bmdma_stop)(struct ata_queued_cmd *qc);
1015 u8 (*bmdma_status)(struct ata_port *ap);
1016#endif /* CONFIG_ATA_BMDMA */
1017#endif /* CONFIG_ATA_SFF */
1018
1019 ssize_t (*em_show)(struct ata_port *ap, char *buf);
1020 ssize_t (*em_store)(struct ata_port *ap, const char *message,
1021 size_t size);
1022 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
1023 ssize_t (*sw_activity_store)(struct ata_device *dev,
1024 enum sw_activity val);
1025 ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
1026 ssize_t size);
1027
1028 /*
1029 * ->inherits must be the last field and all the preceding
1030 * fields must be pointers.
1031 */
1032 const struct ata_port_operations *inherits;
1033};
1034
1035struct ata_port_info {
1036 unsigned long flags;
1037 unsigned long link_flags;
1038 unsigned int pio_mask;
1039 unsigned int mwdma_mask;
1040 unsigned int udma_mask;
1041 struct ata_port_operations *port_ops;
1042 void *private_data;
1043};
1044
1045struct ata_timing {
1046 unsigned short mode; /* ATA mode */
1047 unsigned short setup; /* t1 */
1048 unsigned short act8b; /* t2 for 8-bit I/O */
1049 unsigned short rec8b; /* t2i for 8-bit I/O */
1050 unsigned short cyc8b; /* t0 for 8-bit I/O */
1051 unsigned short active; /* t2 or tD */
1052 unsigned short recover; /* t2i or tK */
1053 unsigned short dmack_hold; /* tj */
1054 unsigned short cycle; /* t0 */
1055 unsigned short udma; /* t2CYCTYP/2 */
1056};
1057
1058/*
1059 * Core layer - drivers/ata/libata-core.c
1060 */
1061extern struct ata_port_operations ata_dummy_port_ops;
1062extern const struct ata_port_info ata_dummy_port_info;
1063
1064static inline bool ata_is_atapi(u8 prot)
1065{
1066 return prot & ATA_PROT_FLAG_ATAPI;
1067}
1068
1069static inline bool ata_is_pio(u8 prot)
1070{
1071 return prot & ATA_PROT_FLAG_PIO;
1072}
1073
1074static inline bool ata_is_dma(u8 prot)
1075{
1076 return prot & ATA_PROT_FLAG_DMA;
1077}
1078
1079static inline bool ata_is_ncq(u8 prot)
1080{
1081 return prot & ATA_PROT_FLAG_NCQ;
1082}
1083
1084static inline bool ata_is_data(u8 prot)
1085{
1086 return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
1087}
1088
1089static inline int is_multi_taskfile(struct ata_taskfile *tf)
1090{
1091 return (tf->command == ATA_CMD_READ_MULTI) ||
1092 (tf->command == ATA_CMD_WRITE_MULTI) ||
1093 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1094 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1095 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1096}
1097
1098static inline int ata_port_is_dummy(struct ata_port *ap)
1099{
1100 return ap->ops == &ata_dummy_port_ops;
1101}
1102
1103static inline bool ata_port_is_frozen(const struct ata_port *ap)
1104{
1105 return ap->pflags & ATA_PFLAG_FROZEN;
1106}
1107
1108extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
1109extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
1110 int (*check_ready)(struct ata_link *link));
1111extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
1112
1113extern struct ata_host *ata_host_alloc(struct device *dev, int n_ports);
1114extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
1115 const struct ata_port_info * const * ppi, int n_ports);
1116extern void ata_host_get(struct ata_host *host);
1117extern void ata_host_put(struct ata_host *host);
1118extern int ata_host_start(struct ata_host *host);
1119extern int ata_host_register(struct ata_host *host,
1120 const struct scsi_host_template *sht);
1121extern int ata_host_activate(struct ata_host *host, int irq,
1122 irq_handler_t irq_handler, unsigned long irq_flags,
1123 const struct scsi_host_template *sht);
1124extern void ata_host_detach(struct ata_host *host);
1125extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
1126extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
1127 void __user *arg);
1128#ifdef CONFIG_COMPAT
1129#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
1130#else
1131#define ATA_SCSI_COMPAT_IOCTL /* empty */
1132#endif
1133extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
1134#if IS_REACHABLE(CONFIG_ATA)
1135bool ata_scsi_dma_need_drain(struct request *rq);
1136#else
1137#define ata_scsi_dma_need_drain NULL
1138#endif
1139extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
1140 unsigned int cmd, void __user *arg);
1141extern bool ata_link_online(struct ata_link *link);
1142extern bool ata_link_offline(struct ata_link *link);
1143#ifdef CONFIG_PM
1144extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1145extern void ata_host_resume(struct ata_host *host);
1146extern void ata_sas_port_suspend(struct ata_port *ap);
1147extern void ata_sas_port_resume(struct ata_port *ap);
1148#else
1149static inline void ata_sas_port_suspend(struct ata_port *ap)
1150{
1151}
1152static inline void ata_sas_port_resume(struct ata_port *ap)
1153{
1154}
1155#endif
1156extern int ata_ratelimit(void);
1157extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1158extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1159 u32 val, unsigned int interval, unsigned int timeout);
1160extern int atapi_cmd_type(u8 opcode);
1161extern unsigned int ata_pack_xfermask(unsigned int pio_mask,
1162 unsigned int mwdma_mask,
1163 unsigned int udma_mask);
1164extern void ata_unpack_xfermask(unsigned int xfer_mask,
1165 unsigned int *pio_mask,
1166 unsigned int *mwdma_mask,
1167 unsigned int *udma_mask);
1168extern u8 ata_xfer_mask2mode(unsigned int xfer_mask);
1169extern unsigned int ata_xfer_mode2mask(u8 xfer_mode);
1170extern int ata_xfer_mode2shift(u8 xfer_mode);
1171extern const char *ata_mode_string(unsigned int xfer_mask);
1172extern unsigned int ata_id_xfermask(const u16 *id);
1173extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1174extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1175 unsigned int n_elem);
1176extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1177extern unsigned int ata_port_classify(struct ata_port *ap,
1178 const struct ata_taskfile *tf);
1179extern void ata_dev_disable(struct ata_device *adev);
1180extern void ata_id_string(const u16 *id, unsigned char *s,
1181 unsigned int ofs, unsigned int len);
1182extern void ata_id_c_string(const u16 *id, unsigned char *s,
1183 unsigned int ofs, unsigned int len);
1184extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1185 struct ata_taskfile *tf, __le16 *id);
1186extern void ata_qc_complete(struct ata_queued_cmd *qc);
1187extern u64 ata_qc_get_active(struct ata_port *ap);
1188extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1189extern int ata_std_bios_param(struct scsi_device *sdev,
1190 struct block_device *bdev,
1191 sector_t capacity, int geom[]);
1192extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1193extern int ata_scsi_sdev_init(struct scsi_device *sdev);
1194int ata_scsi_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim);
1195extern void ata_scsi_sdev_destroy(struct scsi_device *sdev);
1196extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1197 int queue_depth);
1198extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
1199 int queue_depth);
1200extern int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev,
1201 bool *supported);
1202extern int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev,
1203 bool *enabled);
1204extern int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev,
1205 bool enable);
1206extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1207extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1208extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1209extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1210
1211/*
1212 * SATA specific code - drivers/ata/libata-sata.c
1213 */
1214#ifdef CONFIG_SATA_HOST
1215extern const unsigned int sata_deb_timing_normal[];
1216extern const unsigned int sata_deb_timing_hotplug[];
1217extern const unsigned int sata_deb_timing_long[];
1218
1219static inline const unsigned int *
1220sata_ehc_deb_timing(struct ata_eh_context *ehc)
1221{
1222 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
1223 return sata_deb_timing_hotplug;
1224 else
1225 return sata_deb_timing_normal;
1226}
1227
1228extern int sata_scr_valid(struct ata_link *link);
1229extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
1230extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1231extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1232extern int sata_set_spd(struct ata_link *link);
1233int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1234 unsigned long deadline);
1235extern int sata_link_hardreset(struct ata_link *link,
1236 const unsigned int *timing, unsigned long deadline,
1237 bool *online, int (*check_ready)(struct ata_link *));
1238extern int sata_link_resume(struct ata_link *link, const unsigned int *params,
1239 unsigned long deadline);
1240extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1241#else
1242static inline const unsigned int *
1243sata_ehc_deb_timing(struct ata_eh_context *ehc)
1244{
1245 return NULL;
1246}
1247static inline int sata_scr_valid(struct ata_link *link) { return 0; }
1248static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
1249{
1250 return -EOPNOTSUPP;
1251}
1252static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
1253{
1254 return -EOPNOTSUPP;
1255}
1256static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
1257{
1258 return -EOPNOTSUPP;
1259}
1260static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
1261static inline int sata_std_hardreset(struct ata_link *link, unsigned int *class,
1262 unsigned long deadline)
1263{
1264 return -EOPNOTSUPP;
1265}
1266static inline int sata_link_hardreset(struct ata_link *link,
1267 const unsigned int *timing,
1268 unsigned long deadline,
1269 bool *online,
1270 int (*check_ready)(struct ata_link *))
1271{
1272 if (online)
1273 *online = false;
1274 return -EOPNOTSUPP;
1275}
1276static inline int sata_link_resume(struct ata_link *link,
1277 const unsigned int *params,
1278 unsigned long deadline)
1279{
1280 return -EOPNOTSUPP;
1281}
1282static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
1283#endif
1284extern int sata_link_debounce(struct ata_link *link,
1285 const unsigned int *params, unsigned long deadline);
1286extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1287 bool spm_wakeup);
1288extern int ata_slave_link_init(struct ata_port *ap);
1289extern void ata_port_probe(struct ata_port *ap);
1290extern struct ata_port *ata_port_alloc(struct ata_host *host);
1291extern void ata_port_free(struct ata_port *ap);
1292extern int ata_tport_add(struct device *parent, struct ata_port *ap);
1293extern void ata_tport_delete(struct ata_port *ap);
1294int ata_sas_sdev_configure(struct scsi_device *sdev, struct queue_limits *lim,
1295 struct ata_port *ap);
1296extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
1297extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1298 u8 pmp, int is_cmd, u8 *fis);
1299extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1300extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
1301extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
1302extern int sata_async_notification(struct ata_port *ap);
1303
1304extern int ata_cable_40wire(struct ata_port *ap);
1305extern int ata_cable_80wire(struct ata_port *ap);
1306extern int ata_cable_sata(struct ata_port *ap);
1307extern int ata_cable_ignore(struct ata_port *ap);
1308extern int ata_cable_unknown(struct ata_port *ap);
1309
1310/* Timing helpers */
1311extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1312extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1313
1314/* PCI */
1315#ifdef CONFIG_PCI
1316struct pci_dev;
1317
1318struct pci_bits {
1319 unsigned int reg; /* PCI config register to read */
1320 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1321 unsigned long mask;
1322 unsigned long val;
1323};
1324
1325extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1326extern void ata_pci_shutdown_one(struct pci_dev *pdev);
1327extern void ata_pci_remove_one(struct pci_dev *pdev);
1328
1329#ifdef CONFIG_PM
1330extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1331extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1332extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1333extern int ata_pci_device_resume(struct pci_dev *pdev);
1334#endif /* CONFIG_PM */
1335#endif /* CONFIG_PCI */
1336
1337struct platform_device;
1338
1339extern void ata_platform_remove_one(struct platform_device *pdev);
1340
1341/*
1342 * ACPI - drivers/ata/libata-acpi.c
1343 */
1344#ifdef CONFIG_ATA_ACPI
1345static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1346{
1347 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1348 return &ap->__acpi_init_gtm;
1349 return NULL;
1350}
1351int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1352int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1353unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1354 const struct ata_acpi_gtm *gtm);
1355int ata_acpi_cbl_pata_type(struct ata_port *ap);
1356#else
1357static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1358{
1359 return NULL;
1360}
1361
1362static inline int ata_acpi_stm(const struct ata_port *ap,
1363 struct ata_acpi_gtm *stm)
1364{
1365 return -ENOSYS;
1366}
1367
1368static inline int ata_acpi_gtm(const struct ata_port *ap,
1369 struct ata_acpi_gtm *stm)
1370{
1371 return -ENOSYS;
1372}
1373
1374static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1375 const struct ata_acpi_gtm *gtm)
1376{
1377 return 0;
1378}
1379
1380static inline int ata_acpi_cbl_pata_type(struct ata_port *ap)
1381{
1382 return ATA_CBL_PATA40;
1383}
1384#endif
1385
1386/*
1387 * EH - drivers/ata/libata-eh.c
1388 */
1389extern void ata_port_schedule_eh(struct ata_port *ap);
1390extern void ata_port_wait_eh(struct ata_port *ap);
1391extern int ata_link_abort(struct ata_link *link);
1392extern int ata_port_abort(struct ata_port *ap);
1393extern int ata_port_freeze(struct ata_port *ap);
1394
1395extern void ata_eh_freeze_port(struct ata_port *ap);
1396extern void ata_eh_thaw_port(struct ata_port *ap);
1397
1398extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1399extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1400
1401extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1402 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1403 ata_postreset_fn_t postreset);
1404extern void ata_std_error_handler(struct ata_port *ap);
1405extern void ata_std_sched_eh(struct ata_port *ap);
1406extern void ata_std_end_eh(struct ata_port *ap);
1407extern int ata_link_nr_enabled(struct ata_link *link);
1408
1409/*
1410 * Base operations to inherit from and initializers for sht
1411 *
1412 * Operations
1413 *
1414 * base : Common to all libata drivers.
1415 * sata : SATA controllers w/ native interface.
1416 * pmp : SATA controllers w/ PMP support.
1417 * sff : SFF ATA controllers w/o BMDMA support.
1418 * bmdma : SFF ATA controllers w/ BMDMA support.
1419 *
1420 * sht initializers
1421 *
1422 * BASE : Common to all libata drivers. The user must set
1423 * sg_tablesize and dma_boundary.
1424 * PIO : SFF ATA controllers w/ only PIO support.
1425 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1426 * dma_boundary are set to BMDMA limits.
1427 * NCQ : SATA controllers supporting NCQ. The user must set
1428 * sg_tablesize, dma_boundary and can_queue.
1429 */
1430extern const struct ata_port_operations ata_base_port_ops;
1431extern const struct ata_port_operations sata_port_ops;
1432extern const struct attribute_group *ata_common_sdev_groups[];
1433
1434/*
1435 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
1436 * by the edge drivers. Because the 'module' field of sht must be the
1437 * edge driver's module reference, otherwise the driver can be unloaded
1438 * even if the scsi_device is being accessed.
1439 */
1440#define __ATA_BASE_SHT(drv_name) \
1441 .module = THIS_MODULE, \
1442 .name = drv_name, \
1443 .ioctl = ata_scsi_ioctl, \
1444 ATA_SCSI_COMPAT_IOCTL \
1445 .queuecommand = ata_scsi_queuecmd, \
1446 .dma_need_drain = ata_scsi_dma_need_drain, \
1447 .this_id = ATA_SHT_THIS_ID, \
1448 .emulated = ATA_SHT_EMULATED, \
1449 .proc_name = drv_name, \
1450 .sdev_init = ata_scsi_sdev_init, \
1451 .sdev_destroy = ata_scsi_sdev_destroy, \
1452 .bios_param = ata_std_bios_param, \
1453 .unlock_native_capacity = ata_scsi_unlock_native_capacity,\
1454 .max_sectors = ATA_MAX_SECTORS_LBA48
1455
1456#define ATA_SUBBASE_SHT(drv_name) \
1457 __ATA_BASE_SHT(drv_name), \
1458 .can_queue = ATA_DEF_QUEUE, \
1459 .tag_alloc_policy_rr = true, \
1460 .sdev_configure = ata_scsi_sdev_configure
1461
1462#define ATA_SUBBASE_SHT_QD(drv_name, drv_qd) \
1463 __ATA_BASE_SHT(drv_name), \
1464 .can_queue = drv_qd, \
1465 .tag_alloc_policy_rr = true, \
1466 .sdev_configure = ata_scsi_sdev_configure
1467
1468#define ATA_BASE_SHT(drv_name) \
1469 ATA_SUBBASE_SHT(drv_name), \
1470 .sdev_groups = ata_common_sdev_groups
1471
1472#ifdef CONFIG_SATA_HOST
1473extern const struct attribute_group *ata_ncq_sdev_groups[];
1474
1475#define ATA_NCQ_SHT(drv_name) \
1476 ATA_SUBBASE_SHT(drv_name), \
1477 .sdev_groups = ata_ncq_sdev_groups, \
1478 .change_queue_depth = ata_scsi_change_queue_depth
1479
1480#define ATA_NCQ_SHT_QD(drv_name, drv_qd) \
1481 ATA_SUBBASE_SHT_QD(drv_name, drv_qd), \
1482 .sdev_groups = ata_ncq_sdev_groups, \
1483 .change_queue_depth = ata_scsi_change_queue_depth
1484#endif
1485
1486/*
1487 * PMP helpers
1488 */
1489#ifdef CONFIG_SATA_PMP
1490static inline bool sata_pmp_supported(struct ata_port *ap)
1491{
1492 return ap->flags & ATA_FLAG_PMP;
1493}
1494
1495static inline bool sata_pmp_attached(struct ata_port *ap)
1496{
1497 return ap->nr_pmp_links != 0;
1498}
1499
1500static inline bool ata_is_host_link(const struct ata_link *link)
1501{
1502 return link == &link->ap->link || link == link->ap->slave_link;
1503}
1504#else /* CONFIG_SATA_PMP */
1505static inline bool sata_pmp_supported(struct ata_port *ap)
1506{
1507 return false;
1508}
1509
1510static inline bool sata_pmp_attached(struct ata_port *ap)
1511{
1512 return false;
1513}
1514
1515static inline bool ata_is_host_link(const struct ata_link *link)
1516{
1517 return true;
1518}
1519#endif /* CONFIG_SATA_PMP */
1520
1521static inline int sata_srst_pmp(struct ata_link *link)
1522{
1523 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1524 return SATA_PMP_CTRL_PORT;
1525 return link->pmp;
1526}
1527
1528#define ata_port_printk(level, ap, fmt, ...) \
1529 pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__)
1530
1531#define ata_port_err(ap, fmt, ...) \
1532 ata_port_printk(err, ap, fmt, ##__VA_ARGS__)
1533#define ata_port_warn(ap, fmt, ...) \
1534 ata_port_printk(warn, ap, fmt, ##__VA_ARGS__)
1535#define ata_port_notice(ap, fmt, ...) \
1536 ata_port_printk(notice, ap, fmt, ##__VA_ARGS__)
1537#define ata_port_info(ap, fmt, ...) \
1538 ata_port_printk(info, ap, fmt, ##__VA_ARGS__)
1539#define ata_port_dbg(ap, fmt, ...) \
1540 ata_port_printk(debug, ap, fmt, ##__VA_ARGS__)
1541
1542#define ata_link_printk(level, link, fmt, ...) \
1543do { \
1544 if (sata_pmp_attached((link)->ap) || \
1545 (link)->ap->slave_link) \
1546 pr_ ## level ("ata%u.%02u: " fmt, \
1547 (link)->ap->print_id, \
1548 (link)->pmp, \
1549 ##__VA_ARGS__); \
1550 else \
1551 pr_ ## level ("ata%u: " fmt, \
1552 (link)->ap->print_id, \
1553 ##__VA_ARGS__); \
1554} while (0)
1555
1556#define ata_link_err(link, fmt, ...) \
1557 ata_link_printk(err, link, fmt, ##__VA_ARGS__)
1558#define ata_link_warn(link, fmt, ...) \
1559 ata_link_printk(warn, link, fmt, ##__VA_ARGS__)
1560#define ata_link_notice(link, fmt, ...) \
1561 ata_link_printk(notice, link, fmt, ##__VA_ARGS__)
1562#define ata_link_info(link, fmt, ...) \
1563 ata_link_printk(info, link, fmt, ##__VA_ARGS__)
1564#define ata_link_dbg(link, fmt, ...) \
1565 ata_link_printk(debug, link, fmt, ##__VA_ARGS__)
1566
1567#define ata_dev_printk(level, dev, fmt, ...) \
1568 pr_ ## level("ata%u.%02u: " fmt, \
1569 (dev)->link->ap->print_id, \
1570 (dev)->link->pmp + (dev)->devno, \
1571 ##__VA_ARGS__)
1572
1573#define ata_dev_err(dev, fmt, ...) \
1574 ata_dev_printk(err, dev, fmt, ##__VA_ARGS__)
1575#define ata_dev_warn(dev, fmt, ...) \
1576 ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__)
1577#define ata_dev_notice(dev, fmt, ...) \
1578 ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__)
1579#define ata_dev_info(dev, fmt, ...) \
1580 ata_dev_printk(info, dev, fmt, ##__VA_ARGS__)
1581#define ata_dev_dbg(dev, fmt, ...) \
1582 ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__)
1583
1584static inline void ata_print_version_once(const struct device *dev,
1585 const char *version)
1586{
1587 dev_dbg_once(dev, "version %s\n", version);
1588}
1589
1590/*
1591 * ata_eh_info helpers
1592 */
1593extern __printf(2, 3)
1594void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1595extern __printf(2, 3)
1596void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
1597extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1598
1599static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1600{
1601 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1602 ehi->flags |= ATA_EHI_HOTPLUGGED;
1603 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1604 ehi->err_mask |= AC_ERR_ATA_BUS;
1605}
1606
1607/*
1608 * port description helpers
1609 */
1610extern __printf(2, 3)
1611void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
1612#ifdef CONFIG_PCI
1613extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1614 const char *name);
1615#endif
1616static inline void ata_port_desc_misc(struct ata_port *ap, int irq)
1617{
1618 ata_port_desc(ap, "irq %d", irq);
1619 ata_port_desc(ap, "lpm-pol %d", ap->target_lpm_policy);
1620 if (ap->pflags & ATA_PFLAG_EXTERNAL)
1621 ata_port_desc(ap, "ext");
1622}
1623
1624static inline bool ata_tag_internal(unsigned int tag)
1625{
1626 return tag == ATA_TAG_INTERNAL;
1627}
1628
1629static inline bool ata_tag_valid(unsigned int tag)
1630{
1631 return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
1632}
1633
1634#define __ata_qc_for_each(ap, qc, tag, max_tag, fn) \
1635 for ((tag) = 0; (tag) < (max_tag) && \
1636 ({ qc = fn((ap), (tag)); 1; }); (tag)++) \
1637
1638/*
1639 * Internal use only, iterate commands ignoring error handling and
1640 * status of 'qc'.
1641 */
1642#define ata_qc_for_each_raw(ap, qc, tag) \
1643 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
1644
1645/*
1646 * Iterate all potential commands that can be queued
1647 */
1648#define ata_qc_for_each(ap, qc, tag) \
1649 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
1650
1651/*
1652 * Like ata_qc_for_each, but with the internal tag included
1653 */
1654#define ata_qc_for_each_with_internal(ap, qc, tag) \
1655 __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
1656
1657/*
1658 * device helpers
1659 */
1660static inline unsigned int ata_class_enabled(unsigned int class)
1661{
1662 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1663 class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
1664 class == ATA_DEV_ZAC;
1665}
1666
1667static inline unsigned int ata_class_disabled(unsigned int class)
1668{
1669 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1670 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
1671 class == ATA_DEV_ZAC_UNSUP;
1672}
1673
1674static inline unsigned int ata_class_absent(unsigned int class)
1675{
1676 return !ata_class_enabled(class) && !ata_class_disabled(class);
1677}
1678
1679static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1680{
1681 return ata_class_enabled(dev->class);
1682}
1683
1684static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1685{
1686 return ata_class_disabled(dev->class);
1687}
1688
1689static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1690{
1691 return ata_class_absent(dev->class);
1692}
1693
1694/*
1695 * link helpers
1696 */
1697static inline int ata_link_max_devices(const struct ata_link *link)
1698{
1699 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1700 return 2;
1701 return 1;
1702}
1703
1704static inline int ata_link_active(struct ata_link *link)
1705{
1706 return ata_tag_valid(link->active_tag) || link->sactive;
1707}
1708
1709/*
1710 * Iterators
1711 *
1712 * ATA_LITER_* constants are used to select link iteration mode and
1713 * ATA_DITER_* device iteration mode.
1714 *
1715 * For a custom iteration directly using ata_{link|dev}_next(), if
1716 * @link or @dev, respectively, is NULL, the first element is
1717 * returned. @dev and @link can be any valid device or link and the
1718 * next element according to the iteration mode will be returned.
1719 * After the last element, NULL is returned.
1720 */
1721enum ata_link_iter_mode {
1722 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1723 * host link. no slave link */
1724 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1725 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1726 * slave link still comes after host link */
1727};
1728
1729enum ata_dev_iter_mode {
1730 ATA_DITER_ENABLED,
1731 ATA_DITER_ENABLED_REVERSE,
1732 ATA_DITER_ALL,
1733 ATA_DITER_ALL_REVERSE,
1734};
1735
1736extern struct ata_link *ata_link_next(struct ata_link *link,
1737 struct ata_port *ap,
1738 enum ata_link_iter_mode mode);
1739
1740extern struct ata_device *ata_dev_next(struct ata_device *dev,
1741 struct ata_link *link,
1742 enum ata_dev_iter_mode mode);
1743
1744/*
1745 * Shortcut notation for iterations
1746 *
1747 * ata_for_each_link() iterates over each link of @ap according to
1748 * @mode. @link points to the current link in the loop. @link is
1749 * NULL after loop termination. ata_for_each_dev() works the same way
1750 * except that it iterates over each device of @link.
1751 *
1752 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1753 * specified when using the following shorthand notations. Only the
1754 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1755 * specified. This not only increases brevity but also makes it
1756 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1757 */
1758#define ata_for_each_link(link, ap, mode) \
1759 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1760 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1761
1762#define ata_for_each_dev(dev, link, mode) \
1763 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1764 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1765
1766/**
1767 * ata_ncq_supported - Test whether NCQ is supported
1768 * @dev: ATA device to test
1769 *
1770 * LOCKING:
1771 * spin_lock_irqsave(host lock)
1772 *
1773 * RETURNS:
1774 * true if @dev supports NCQ, false otherwise.
1775 */
1776static inline bool ata_ncq_supported(struct ata_device *dev)
1777{
1778 if (!IS_ENABLED(CONFIG_SATA_HOST))
1779 return false;
1780 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1781}
1782
1783/**
1784 * ata_ncq_enabled - Test whether NCQ is enabled
1785 * @dev: ATA device to test
1786 *
1787 * LOCKING:
1788 * spin_lock_irqsave(host lock)
1789 *
1790 * RETURNS:
1791 * true if NCQ is enabled for @dev, false otherwise.
1792 */
1793static inline bool ata_ncq_enabled(struct ata_device *dev)
1794{
1795 return ata_ncq_supported(dev) && !(dev->flags & ATA_DFLAG_NCQ_OFF);
1796}
1797
1798static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
1799{
1800 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1801 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
1802 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
1803}
1804
1805static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
1806{
1807 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1808 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
1809 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
1810}
1811
1812static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
1813{
1814 return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
1815 (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
1816 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
1817}
1818
1819static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
1820{
1821 return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
1822 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
1823}
1824
1825static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1826{
1827 qc->tf.ctl |= ATA_NIEN;
1828}
1829
1830static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1831 unsigned int tag)
1832{
1833 if (ata_tag_valid(tag))
1834 return &ap->qcmd[tag];
1835 return NULL;
1836}
1837
1838static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1839 unsigned int tag)
1840{
1841 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1842
1843 if (unlikely(!qc))
1844 return qc;
1845
1846 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1847 ATA_QCFLAG_EH)) == ATA_QCFLAG_ACTIVE)
1848 return qc;
1849
1850 return NULL;
1851}
1852
1853static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1854{
1855 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1856}
1857
1858static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1859{
1860 memset(tf, 0, sizeof(*tf));
1861
1862#ifdef CONFIG_ATA_SFF
1863 tf->ctl = dev->link->ap->ctl;
1864#else
1865 tf->ctl = ATA_DEVCTL_OBS;
1866#endif
1867 if (dev->devno == 0)
1868 tf->device = ATA_DEVICE_OBS;
1869 else
1870 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1871}
1872
1873static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1874{
1875 qc->dma_dir = DMA_NONE;
1876 qc->sg = NULL;
1877 qc->flags = 0;
1878 qc->cursg = NULL;
1879 qc->cursg_ofs = 0;
1880 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1881 qc->n_elem = 0;
1882 qc->err_mask = 0;
1883 qc->sect_size = ATA_SECT_SIZE;
1884
1885 ata_tf_init(qc->dev, &qc->tf);
1886
1887 /* init result_tf such that it indicates normal completion */
1888 qc->result_tf.command = ATA_DRDY;
1889 qc->result_tf.feature = 0;
1890}
1891
1892static inline int ata_try_flush_cache(const struct ata_device *dev)
1893{
1894 return ata_id_wcache_enabled(dev->id) ||
1895 ata_id_has_flush(dev->id) ||
1896 ata_id_has_flush_ext(dev->id);
1897}
1898
1899static inline unsigned int ac_err_mask(u8 status)
1900{
1901 if (status & (ATA_BUSY | ATA_DRQ))
1902 return AC_ERR_HSM;
1903 if (status & (ATA_ERR | ATA_DF))
1904 return AC_ERR_DEV;
1905 return 0;
1906}
1907
1908static inline unsigned int __ac_err_mask(u8 status)
1909{
1910 unsigned int mask = ac_err_mask(status);
1911 if (mask == 0)
1912 return AC_ERR_OTHER;
1913 return mask;
1914}
1915
1916static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1917{
1918 return *(struct ata_port **)&host->hostdata[0];
1919}
1920
1921static inline int ata_check_ready(u8 status)
1922{
1923 if (!(status & ATA_BUSY))
1924 return 1;
1925
1926 /* 0xff indicates either no device or device not ready */
1927 if (status == 0xff)
1928 return -ENODEV;
1929
1930 return 0;
1931}
1932
1933static inline unsigned long ata_deadline(unsigned long from_jiffies,
1934 unsigned int timeout_msecs)
1935{
1936 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1937}
1938
1939/* Don't open code these in drivers as there are traps. Firstly the range may
1940 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1941 > UDMA_0. Dyma ddreigiau */
1942
1943static inline bool ata_using_mwdma(struct ata_device *adev)
1944{
1945 return adev->dma_mode >= XFER_MW_DMA_0 &&
1946 adev->dma_mode <= XFER_MW_DMA_4;
1947}
1948
1949static inline bool ata_using_udma(struct ata_device *adev)
1950{
1951 return adev->dma_mode >= XFER_UDMA_0 &&
1952 adev->dma_mode <= XFER_UDMA_7;
1953}
1954
1955static inline bool ata_dma_enabled(struct ata_device *adev)
1956{
1957 return adev->dma_mode != 0xFF;
1958}
1959
1960/**************************************************************************
1961 * PATA timings - drivers/ata/libata-pata-timings.c
1962 */
1963extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1964extern int ata_timing_compute(struct ata_device *, unsigned short,
1965 struct ata_timing *, int, int);
1966extern void ata_timing_merge(const struct ata_timing *,
1967 const struct ata_timing *, struct ata_timing *,
1968 unsigned int);
1969
1970/**************************************************************************
1971 * PMP - drivers/ata/libata-pmp.c
1972 */
1973#ifdef CONFIG_SATA_PMP
1974
1975extern const struct ata_port_operations sata_pmp_port_ops;
1976
1977extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1978extern void sata_pmp_error_handler(struct ata_port *ap);
1979
1980#else /* CONFIG_SATA_PMP */
1981
1982#define sata_pmp_port_ops sata_port_ops
1983#define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1984#define sata_pmp_error_handler ata_std_error_handler
1985
1986#endif /* CONFIG_SATA_PMP */
1987
1988
1989/**************************************************************************
1990 * SFF - drivers/ata/libata-sff.c
1991 */
1992#ifdef CONFIG_ATA_SFF
1993
1994extern const struct ata_port_operations ata_sff_port_ops;
1995extern const struct ata_port_operations ata_bmdma32_port_ops;
1996
1997/* PIO only, sg_tablesize and dma_boundary limits can be removed */
1998#define ATA_PIO_SHT(drv_name) \
1999 ATA_BASE_SHT(drv_name), \
2000 .sg_tablesize = LIBATA_MAX_PRD, \
2001 .dma_boundary = ATA_DMA_BOUNDARY
2002
2003extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
2004extern u8 ata_sff_check_status(struct ata_port *ap);
2005extern void ata_sff_pause(struct ata_port *ap);
2006extern void ata_sff_dma_pause(struct ata_port *ap);
2007extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
2008extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
2009extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
2010extern void ata_sff_exec_command(struct ata_port *ap,
2011 const struct ata_taskfile *tf);
2012extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
2013 unsigned char *buf, unsigned int buflen, int rw);
2014extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
2015 unsigned char *buf, unsigned int buflen, int rw);
2016extern void ata_sff_irq_on(struct ata_port *ap);
2017extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
2018 u8 status, int in_wq);
2019extern void ata_sff_queue_work(struct work_struct *work);
2020extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
2021 unsigned long delay);
2022extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
2023extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
2024extern void ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
2025extern unsigned int ata_sff_port_intr(struct ata_port *ap,
2026 struct ata_queued_cmd *qc);
2027extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
2028extern void ata_sff_lost_interrupt(struct ata_port *ap);
2029extern void ata_sff_freeze(struct ata_port *ap);
2030extern void ata_sff_thaw(struct ata_port *ap);
2031extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
2032extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
2033 u8 *r_err);
2034extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
2035 unsigned long deadline);
2036extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
2037 unsigned long deadline);
2038extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
2039 unsigned long deadline);
2040extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
2041extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
2042extern void ata_sff_error_handler(struct ata_port *ap);
2043extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
2044#ifdef CONFIG_PCI
2045extern int ata_pci_sff_init_host(struct ata_host *host);
2046extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
2047 const struct ata_port_info * const * ppi,
2048 struct ata_host **r_host);
2049extern int ata_pci_sff_activate_host(struct ata_host *host,
2050 irq_handler_t irq_handler,
2051 const struct scsi_host_template *sht);
2052extern int ata_pci_sff_init_one(struct pci_dev *pdev,
2053 const struct ata_port_info * const * ppi,
2054 const struct scsi_host_template *sht, void *host_priv, int hflags);
2055#endif /* CONFIG_PCI */
2056
2057#ifdef CONFIG_ATA_BMDMA
2058
2059extern const struct ata_port_operations ata_bmdma_port_ops;
2060
2061#define ATA_BMDMA_SHT(drv_name) \
2062 ATA_BASE_SHT(drv_name), \
2063 .sg_tablesize = LIBATA_MAX_PRD, \
2064 .dma_boundary = ATA_DMA_BOUNDARY
2065
2066extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
2067extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
2068extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
2069extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
2070 struct ata_queued_cmd *qc);
2071extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
2072extern void ata_bmdma_error_handler(struct ata_port *ap);
2073extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
2074extern void ata_bmdma_irq_clear(struct ata_port *ap);
2075extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
2076extern void ata_bmdma_start(struct ata_queued_cmd *qc);
2077extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
2078extern u8 ata_bmdma_status(struct ata_port *ap);
2079extern int ata_bmdma_port_start(struct ata_port *ap);
2080extern int ata_bmdma_port_start32(struct ata_port *ap);
2081
2082#ifdef CONFIG_PCI
2083extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
2084extern void ata_pci_bmdma_init(struct ata_host *host);
2085extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
2086 const struct ata_port_info * const * ppi,
2087 struct ata_host **r_host);
2088extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
2089 const struct ata_port_info * const * ppi,
2090 const struct scsi_host_template *sht,
2091 void *host_priv, int hflags);
2092#endif /* CONFIG_PCI */
2093#endif /* CONFIG_ATA_BMDMA */
2094
2095/**
2096 * ata_sff_busy_wait - Wait for a port status register
2097 * @ap: Port to wait for.
2098 * @bits: bits that must be clear
2099 * @max: number of 10uS waits to perform
2100 *
2101 * Waits up to max*10 microseconds for the selected bits in the port's
2102 * status register to be cleared.
2103 * Returns final value of status register.
2104 *
2105 * LOCKING:
2106 * Inherited from caller.
2107 */
2108static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
2109 unsigned int max)
2110{
2111 u8 status;
2112
2113 do {
2114 udelay(10);
2115 status = ap->ops->sff_check_status(ap);
2116 max--;
2117 } while (status != 0xff && (status & bits) && (max > 0));
2118
2119 return status;
2120}
2121
2122/**
2123 * ata_wait_idle - Wait for a port to be idle.
2124 * @ap: Port to wait for.
2125 *
2126 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
2127 * Returns final value of status register.
2128 *
2129 * LOCKING:
2130 * Inherited from caller.
2131 */
2132static inline u8 ata_wait_idle(struct ata_port *ap)
2133{
2134 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
2135
2136 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
2137 ata_port_dbg(ap, "abnormal Status 0x%X\n", status);
2138
2139 return status;
2140}
2141#endif /* CONFIG_ATA_SFF */
2142
2143#endif /* __LINUX_LIBATA_H__ */
Linux 6.x block layer and io_uring tree(s)