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libata: remove ATA_FLAG_MMIO
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / linux / libata.h
blob0c3d9e1448915444594083b53b366599b20b3598
1 /*
2 * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2005 Jeff Garzik
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * libata documentation is available via 'make {ps|pdf}docs',
22 * as Documentation/DocBook/libata.*
23 *
24 */
25
26 #ifndef __LINUX_LIBATA_H__
27 #define __LINUX_LIBATA_H__
28
29 #include <linux/delay.h>
30 #include <linux/jiffies.h>
31 #include <linux/interrupt.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/scatterlist.h>
34 #include <linux/io.h>
35 #include <linux/ata.h>
36 #include <linux/workqueue.h>
37 #include <scsi/scsi_host.h>
38 #include <linux/acpi.h>
39 #include <linux/cdrom.h>
40 #include <linux/sched.h>
41
42 /*
43 * Define if arch has non-standard setup. This is a _PCI_ standard
44 * not a legacy or ISA standard.
45 */
46 #ifdef CONFIG_ATA_NONSTANDARD
47 #include <asm/libata-portmap.h>
48 #else
49 #include <asm-generic/libata-portmap.h>
50 #endif
51
52 /*
53 * compile-time options: to be removed as soon as all the drivers are
54 * converted to the new debugging mechanism
55 */
56 #undef ATA_DEBUG /* debugging output */
57 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */
58 #undef ATA_IRQ_TRAP /* define to ack screaming irqs */
59 #undef ATA_NDEBUG /* define to disable quick runtime checks */
60
61
62 /* note: prints function name for you */
63 #ifdef ATA_DEBUG
64 #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
65 #ifdef ATA_VERBOSE_DEBUG
66 #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
67 #else
68 #define VPRINTK(fmt, args...)
69 #endif /* ATA_VERBOSE_DEBUG */
70 #else
71 #define DPRINTK(fmt, args...)
72 #define VPRINTK(fmt, args...)
73 #endif /* ATA_DEBUG */
74
75 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
76
77 /* NEW: debug levels */
78 #define HAVE_LIBATA_MSG 1
79
80 enum {
81 ATA_MSG_DRV = 0x0001,
82 ATA_MSG_INFO = 0x0002,
83 ATA_MSG_PROBE = 0x0004,
84 ATA_MSG_WARN = 0x0008,
85 ATA_MSG_MALLOC = 0x0010,
86 ATA_MSG_CTL = 0x0020,
87 ATA_MSG_INTR = 0x0040,
88 ATA_MSG_ERR = 0x0080,
89 };
90
91 #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
92 #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
93 #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
94 #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
95 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
96 #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
97 #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
98 #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
99
100 static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
101 {
102 if (dval < 0 || dval >= (sizeof(u32) * 8))
103 return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
104 if (!dval)
105 return 0;
106 return (1 << dval) - 1;
107 }
108
109 /* defines only for the constants which don't work well as enums */
110 #define ATA_TAG_POISON 0xfafbfcfdU
111
112 enum {
113 /* various global constants */
114 LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
115 LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */
116 ATA_DEF_QUEUE = 1,
117 /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
118 ATA_MAX_QUEUE = 32,
119 ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
120 ATA_SHORT_PAUSE = 16,
121
122 ATAPI_MAX_DRAIN = 16 << 10,
123
124 ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
125
126 ATA_SHT_EMULATED = 1,
127 ATA_SHT_CMD_PER_LUN = 1,
128 ATA_SHT_THIS_ID = -1,
129 ATA_SHT_USE_CLUSTERING = 1,
130
131 /* struct ata_device stuff */
132 ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
133 ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
134 ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
135 ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */
136 ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
137 ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
138 ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
139 ATA_DFLAG_AN = (1 << 7), /* AN configured */
140 ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */
141 ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */
142 ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */
143 ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
144
145 ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
146 ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
147 ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
148 ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
149 ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
150 ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */
151 ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
152
153 ATA_DFLAG_DETACH = (1 << 24),
154 ATA_DFLAG_DETACHED = (1 << 25),
155
156 ATA_DEV_UNKNOWN = 0, /* unknown device */
157 ATA_DEV_ATA = 1, /* ATA device */
158 ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
159 ATA_DEV_ATAPI = 3, /* ATAPI device */
160 ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
161 ATA_DEV_PMP = 5, /* SATA port multiplier */
162 ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
163 ATA_DEV_SEMB = 7, /* SEMB */
164 ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
165 ATA_DEV_NONE = 9, /* no device */
166
167 /* struct ata_link flags */
168 ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
169 ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
170 ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
171 ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
172 ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
173 ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
174 ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
175 ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
176 ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
177
178 /* struct ata_port flags */
179 ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
180 /* (doesn't imply presence) */
181 ATA_FLAG_SATA = (1 << 1),
182 ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */
183 ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
184 ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
185 ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
186 ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
187 * doesn't handle PIO interrupts */
188 ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
189 ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
190 ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
191 ATA_FLAG_DEBUGMSG = (1 << 13),
192 ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */
193 ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
194 ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
195 ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
196 ATA_FLAG_AN = (1 << 18), /* controller supports AN */
197 ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
198 ATA_FLAG_LPM = (1 << 20), /* driver can handle LPM */
199 ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
200 * management */
201 ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
202 * led */
203
204 /* bits 24:31 of ap->flags are reserved for LLD specific flags */
205
206
207 /* struct ata_port pflags */
208 ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
209 ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
210 ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
211 ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
212 ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
213 ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
214 ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
215 ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
216 ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */
217 ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */
218
219 ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
220 ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
221 ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
222
223 ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
224 ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
225
226 /* struct ata_queued_cmd flags */
227 ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
228 ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
229 ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
230 ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
231 ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
232 ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
233 ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
234
235 ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
236 ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
237 ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
238
239 /* host set flags */
240 ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */
241 ATA_HOST_STARTED = (1 << 1), /* Host started */
242 ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */
243
244 /* bits 24:31 of host->flags are reserved for LLD specific flags */
245
246 /* various lengths of time */
247 ATA_TMOUT_BOOT = 30000, /* heuristic */
248 ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
249 ATA_TMOUT_INTERNAL_QUICK = 5000,
250 ATA_TMOUT_MAX_PARK = 30000,
251
252 /*
253 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s
254 * is too much without parallel probing. Use 2s if parallel
255 * probing is available, 800ms otherwise.
256 */
257 ATA_TMOUT_FF_WAIT_LONG = 2000,
258 ATA_TMOUT_FF_WAIT = 800,
259
260 /* Spec mandates to wait for ">= 2ms" before checking status
261 * after reset. We wait 150ms, because that was the magic
262 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
263 * the period of time between when the ATA command register is
264 * written, and then status is checked. Because waiting for
265 * "a while" before checking status is fine, post SRST, we
266 * perform this magic delay here as well.
267 *
268 * Old drivers/ide uses the 2mS rule and then waits for ready.
269 */
270 ATA_WAIT_AFTER_RESET = 150,
271
272 /* If PMP is supported, we have to do follow-up SRST. As some
273 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
274 * advised to wait only for the following duration before
275 * doing SRST.
276 */
277 ATA_TMOUT_PMP_SRST_WAIT = 5000,
278
279 /* ATA bus states */
280 BUS_UNKNOWN = 0,
281 BUS_DMA = 1,
282 BUS_IDLE = 2,
283 BUS_NOINTR = 3,
284 BUS_NODATA = 4,
285 BUS_TIMER = 5,
286 BUS_PIO = 6,
287 BUS_EDD = 7,
288 BUS_IDENTIFY = 8,
289 BUS_PACKET = 9,
290
291 /* SATA port states */
292 PORT_UNKNOWN = 0,
293 PORT_ENABLED = 1,
294 PORT_DISABLED = 2,
295
296 /* encoding various smaller bitmaps into a single
297 * unsigned long bitmap
298 */
299 ATA_NR_PIO_MODES = 7,
300 ATA_NR_MWDMA_MODES = 5,
301 ATA_NR_UDMA_MODES = 8,
302
303 ATA_SHIFT_PIO = 0,
304 ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
305 ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
306
307 /* size of buffer to pad xfers ending on unaligned boundaries */
308 ATA_DMA_PAD_SZ = 4,
309
310 /* ering size */
311 ATA_ERING_SIZE = 32,
312
313 /* return values for ->qc_defer */
314 ATA_DEFER_LINK = 1,
315 ATA_DEFER_PORT = 2,
316
317 /* desc_len for ata_eh_info and context */
318 ATA_EH_DESC_LEN = 80,
319
320 /* reset / recovery action types */
321 ATA_EH_REVALIDATE = (1 << 0),
322 ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */
323 ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
324 ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
325 ATA_EH_ENABLE_LINK = (1 << 3),
326 ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
327
328 ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
329 ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
330 ATA_EH_ENABLE_LINK,
331
332 /* ata_eh_info->flags */
333 ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
334 ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
335 ATA_EHI_QUIET = (1 << 3), /* be quiet */
336 ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */
337
338 ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
339 ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
340 ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
341 ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
342 ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
343
344 ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
345
346 /* mask of flags to transfer *to* the slave link */
347 ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
348
349 /* max tries if error condition is still set after ->error_handler */
350 ATA_EH_MAX_TRIES = 5,
351
352 /* sometimes resuming a link requires several retries */
353 ATA_LINK_RESUME_TRIES = 5,
354
355 /* how hard are we gonna try to probe/recover devices */
356 ATA_PROBE_MAX_TRIES = 3,
357 ATA_EH_DEV_TRIES = 3,
358 ATA_EH_PMP_TRIES = 5,
359 ATA_EH_PMP_LINK_TRIES = 3,
360
361 SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
362
363 /* This should match the actual table size of
364 * ata_eh_cmd_timeout_table in libata-eh.c.
365 */
366 ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
367
368 /* Horkage types. May be set by libata or controller on drives
369 (some horkage may be drive/controller pair dependant */
370
371 ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */
372 ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
373 ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
374 ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
375 ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
376 ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
377 ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
378 ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
379 ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
380 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
381 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
382 not multiple of 16 bytes */
383 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
384 ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
385 ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
386 ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
387 ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
388
389 /* DMA mask for user DMA control: User visible values; DO NOT
390 renumber */
391 ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
392 ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
393 ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
394
395 /* ATAPI command types */
396 ATAPI_READ = 0, /* READs */
397 ATAPI_WRITE = 1, /* WRITEs */
398 ATAPI_READ_CD = 2, /* READ CD [MSF] */
399 ATAPI_PASS_THRU = 3, /* SAT pass-thru */
400 ATAPI_MISC = 4, /* the rest */
401
402 /* Timing constants */
403 ATA_TIMING_SETUP = (1 << 0),
404 ATA_TIMING_ACT8B = (1 << 1),
405 ATA_TIMING_REC8B = (1 << 2),
406 ATA_TIMING_CYC8B = (1 << 3),
407 ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
408 ATA_TIMING_CYC8B,
409 ATA_TIMING_ACTIVE = (1 << 4),
410 ATA_TIMING_RECOVER = (1 << 5),
411 ATA_TIMING_DMACK_HOLD = (1 << 6),
412 ATA_TIMING_CYCLE = (1 << 7),
413 ATA_TIMING_UDMA = (1 << 8),
414 ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
415 ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
416 ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
417 ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
418 ATA_TIMING_UDMA,
419
420 /* ACPI constants */
421 ATA_ACPI_FILTER_SETXFER = 1 << 0,
422 ATA_ACPI_FILTER_LOCK = 1 << 1,
423 ATA_ACPI_FILTER_DIPM = 1 << 2,
424 ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */
425 ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */
426
427 ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER |
428 ATA_ACPI_FILTER_LOCK |
429 ATA_ACPI_FILTER_DIPM,
430 };
431
432 enum ata_xfer_mask {
433 ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1)
434 << ATA_SHIFT_PIO,
435 ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)
436 << ATA_SHIFT_MWDMA,
437 ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1)
438 << ATA_SHIFT_UDMA,
439 };
440
441 enum hsm_task_states {
442 HSM_ST_IDLE, /* no command on going */
443 HSM_ST_FIRST, /* (waiting the device to)
444 write CDB or first data block */
445 HSM_ST, /* (waiting the device to) transfer data */
446 HSM_ST_LAST, /* (waiting the device to) complete command */
447 HSM_ST_ERR, /* error */
448 };
449
450 enum ata_completion_errors {
451 AC_ERR_DEV = (1 << 0), /* device reported error */
452 AC_ERR_HSM = (1 << 1), /* host state machine violation */
453 AC_ERR_TIMEOUT = (1 << 2), /* timeout */
454 AC_ERR_MEDIA = (1 << 3), /* media error */
455 AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
456 AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
457 AC_ERR_SYSTEM = (1 << 6), /* system error */
458 AC_ERR_INVALID = (1 << 7), /* invalid argument */
459 AC_ERR_OTHER = (1 << 8), /* unknown */
460 AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */
461 AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
462 };
463
464 /*
465 * Link power management policy: If you alter this, you also need to
466 * alter libata-scsi.c (for the ascii descriptions)
467 */
468 enum ata_lpm_policy {
469 ATA_LPM_UNKNOWN,
470 ATA_LPM_MAX_POWER,
471 ATA_LPM_MED_POWER,
472 ATA_LPM_MIN_POWER,
473 };
474
475 enum ata_lpm_hints {
476 ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
477 ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
478 };
479
480 /* forward declarations */
481 struct scsi_device;
482 struct ata_port_operations;
483 struct ata_port;
484 struct ata_link;
485 struct ata_queued_cmd;
486
487 /* typedefs */
488 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
489 typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
490 typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
491 unsigned long deadline);
492 typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
493
494 extern struct device_attribute dev_attr_link_power_management_policy;
495 extern struct device_attribute dev_attr_unload_heads;
496 extern struct device_attribute dev_attr_em_message_type;
497 extern struct device_attribute dev_attr_em_message;
498 extern struct device_attribute dev_attr_sw_activity;
499
500 enum sw_activity {
501 OFF,
502 BLINK_ON,
503 BLINK_OFF,
504 };
505
506 #ifdef CONFIG_ATA_SFF
507 struct ata_ioports {
508 void __iomem *cmd_addr;
509 void __iomem *data_addr;
510 void __iomem *error_addr;
511 void __iomem *feature_addr;
512 void __iomem *nsect_addr;
513 void __iomem *lbal_addr;
514 void __iomem *lbam_addr;
515 void __iomem *lbah_addr;
516 void __iomem *device_addr;
517 void __iomem *status_addr;
518 void __iomem *command_addr;
519 void __iomem *altstatus_addr;
520 void __iomem *ctl_addr;
521 #ifdef CONFIG_ATA_BMDMA
522 void __iomem *bmdma_addr;
523 #endif /* CONFIG_ATA_BMDMA */
524 void __iomem *scr_addr;
525 };
526 #endif /* CONFIG_ATA_SFF */
527
528 struct ata_host {
529 spinlock_t lock;
530 struct device *dev;
531 void __iomem * const *iomap;
532 unsigned int n_ports;
533 void *private_data;
534 struct ata_port_operations *ops;
535 unsigned long flags;
536
537 struct mutex eh_mutex;
538 struct task_struct *eh_owner;
539
540 #ifdef CONFIG_ATA_ACPI
541 acpi_handle acpi_handle;
542 #endif
543 struct ata_port *simplex_claimed; /* channel owning the DMA */
544 struct ata_port *ports[0];
545 };
546
547 struct ata_queued_cmd {
548 struct ata_port *ap;
549 struct ata_device *dev;
550
551 struct scsi_cmnd *scsicmd;
552 void (*scsidone)(struct scsi_cmnd *);
553
554 struct ata_taskfile tf;
555 u8 cdb[ATAPI_CDB_LEN];
556
557 unsigned long flags; /* ATA_QCFLAG_xxx */
558 unsigned int tag;
559 unsigned int n_elem;
560 unsigned int orig_n_elem;
561
562 int dma_dir;
563
564 unsigned int sect_size;
565
566 unsigned int nbytes;
567 unsigned int extrabytes;
568 unsigned int curbytes;
569
570 struct scatterlist sgent;
571
572 struct scatterlist *sg;
573
574 struct scatterlist *cursg;
575 unsigned int cursg_ofs;
576
577 unsigned int err_mask;
578 struct ata_taskfile result_tf;
579 ata_qc_cb_t complete_fn;
580
581 void *private_data;
582 void *lldd_task;
583 };
584
585 struct ata_port_stats {
586 unsigned long unhandled_irq;
587 unsigned long idle_irq;
588 unsigned long rw_reqbuf;
589 };
590
591 struct ata_ering_entry {
592 unsigned int eflags;
593 unsigned int err_mask;
594 u64 timestamp;
595 };
596
597 struct ata_ering {
598 int cursor;
599 struct ata_ering_entry ring[ATA_ERING_SIZE];
600 };
601
602 struct ata_device {
603 struct ata_link *link;
604 unsigned int devno; /* 0 or 1 */
605 unsigned int horkage; /* List of broken features */
606 unsigned long flags; /* ATA_DFLAG_xxx */
607 struct scsi_device *sdev; /* attached SCSI device */
608 void *private_data;
609 #ifdef CONFIG_ATA_ACPI
610 acpi_handle acpi_handle;
611 union acpi_object *gtf_cache;
612 unsigned int gtf_filter;
613 #endif
614 struct device tdev;
615 /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
616 u64 n_sectors; /* size of device, if ATA */
617 u64 n_native_sectors; /* native size, if ATA */
618 unsigned int class; /* ATA_DEV_xxx */
619 unsigned long unpark_deadline;
620
621 u8 pio_mode;
622 u8 dma_mode;
623 u8 xfer_mode;
624 unsigned int xfer_shift; /* ATA_SHIFT_xxx */
625
626 unsigned int multi_count; /* sectors count for
627 READ/WRITE MULTIPLE */
628 unsigned int max_sectors; /* per-device max sectors */
629 unsigned int cdb_len;
630
631 /* per-dev xfer mask */
632 unsigned long pio_mask;
633 unsigned long mwdma_mask;
634 unsigned long udma_mask;
635
636 /* for CHS addressing */
637 u16 cylinders; /* Number of cylinders */
638 u16 heads; /* Number of heads */
639 u16 sectors; /* Number of sectors per track */
640
641 union {
642 u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
643 u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
644 };
645
646 /* error history */
647 int spdn_cnt;
648 /* ering is CLEAR_END, read comment above CLEAR_END */
649 struct ata_ering ering;
650 };
651
652 /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
653 * cleared to zero on ata_dev_init().
654 */
655 #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors)
656 #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering)
657
658 struct ata_eh_info {
659 struct ata_device *dev; /* offending device */
660 u32 serror; /* SError from LLDD */
661 unsigned int err_mask; /* port-wide err_mask */
662 unsigned int action; /* ATA_EH_* action mask */
663 unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
664 unsigned int flags; /* ATA_EHI_* flags */
665
666 unsigned int probe_mask;
667
668 char desc[ATA_EH_DESC_LEN];
669 int desc_len;
670 };
671
672 struct ata_eh_context {
673 struct ata_eh_info i;
674 int tries[ATA_MAX_DEVICES];
675 int cmd_timeout_idx[ATA_MAX_DEVICES]
676 [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
677 unsigned int classes[ATA_MAX_DEVICES];
678 unsigned int did_probe_mask;
679 unsigned int unloaded_mask;
680 unsigned int saved_ncq_enabled;
681 u8 saved_xfer_mode[ATA_MAX_DEVICES];
682 /* timestamp for the last reset attempt or success */
683 unsigned long last_reset;
684 };
685
686 struct ata_acpi_drive
687 {
688 u32 pio;
689 u32 dma;
690 } __packed;
691
692 struct ata_acpi_gtm {
693 struct ata_acpi_drive drive[2];
694 u32 flags;
695 } __packed;
696
697 struct ata_link {
698 struct ata_port *ap;
699 int pmp; /* port multiplier port # */
700
701 struct device tdev;
702 unsigned int active_tag; /* active tag on this link */
703 u32 sactive; /* active NCQ commands */
704
705 unsigned int flags; /* ATA_LFLAG_xxx */
706
707 u32 saved_scontrol; /* SControl on probe */
708 unsigned int hw_sata_spd_limit;
709 unsigned int sata_spd_limit;
710 unsigned int sata_spd; /* current SATA PHY speed */
711 enum ata_lpm_policy lpm_policy;
712
713 /* record runtime error info, protected by host_set lock */
714 struct ata_eh_info eh_info;
715 /* EH context */
716 struct ata_eh_context eh_context;
717
718 struct ata_device device[ATA_MAX_DEVICES];
719 };
720 #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
721 #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
722
723 struct ata_port {
724 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
725 struct ata_port_operations *ops;
726 spinlock_t *lock;
727 /* Flags owned by the EH context. Only EH should touch these once the
728 port is active */
729 unsigned long flags; /* ATA_FLAG_xxx */
730 /* Flags that change dynamically, protected by ap->lock */
731 unsigned int pflags; /* ATA_PFLAG_xxx */
732 unsigned int print_id; /* user visible unique port ID */
733 unsigned int port_no; /* 0 based port no. inside the host */
734
735 #ifdef CONFIG_ATA_SFF
736 struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
737 u8 ctl; /* cache of ATA control register */
738 u8 last_ctl; /* Cache last written value */
739 struct ata_link* sff_pio_task_link; /* link currently used */
740 struct delayed_work sff_pio_task;
741 #ifdef CONFIG_ATA_BMDMA
742 struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */
743 dma_addr_t bmdma_prd_dma; /* and its DMA mapping */
744 #endif /* CONFIG_ATA_BMDMA */
745 #endif /* CONFIG_ATA_SFF */
746
747 unsigned int pio_mask;
748 unsigned int mwdma_mask;
749 unsigned int udma_mask;
750 unsigned int cbl; /* cable type; ATA_CBL_xxx */
751
752 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
753 unsigned long qc_allocated;
754 unsigned int qc_active;
755 int nr_active_links; /* #links with active qcs */
756
757 struct ata_link link; /* host default link */
758 struct ata_link *slave_link; /* see ata_slave_link_init() */
759
760 int nr_pmp_links; /* nr of available PMP links */
761 struct ata_link *pmp_link; /* array of PMP links */
762 struct ata_link *excl_link; /* for PMP qc exclusion */
763
764 struct ata_port_stats stats;
765 struct ata_host *host;
766 struct device *dev;
767 struct device tdev;
768
769 struct mutex scsi_scan_mutex;
770 struct delayed_work hotplug_task;
771 struct work_struct scsi_rescan_task;
772
773 unsigned int hsm_task_state;
774
775 u32 msg_enable;
776 struct list_head eh_done_q;
777 wait_queue_head_t eh_wait_q;
778 int eh_tries;
779 struct completion park_req_pending;
780
781 pm_message_t pm_mesg;
782 int *pm_result;
783 enum ata_lpm_policy target_lpm_policy;
784
785 struct timer_list fastdrain_timer;
786 unsigned long fastdrain_cnt;
787
788 int em_message_type;
789 void *private_data;
790
791 #ifdef CONFIG_ATA_ACPI
792 acpi_handle acpi_handle;
793 struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
794 #endif
795 /* owned by EH */
796 u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
797 };
798
799 /* The following initializer overrides a method to NULL whether one of
800 * its parent has the method defined or not. This is equivalent to
801 * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
802 * expression and thus can't be used as an initializer.
803 */
804 #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
805
806 struct ata_port_operations {
807 /*
808 * Command execution
809 */
810 int (*qc_defer)(struct ata_queued_cmd *qc);
811 int (*check_atapi_dma)(struct ata_queued_cmd *qc);
812 void (*qc_prep)(struct ata_queued_cmd *qc);
813 unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
814 bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
815
816 /*
817 * Configuration and exception handling
818 */
819 int (*cable_detect)(struct ata_port *ap);
820 unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
821 void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
822 void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
823 int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
824 unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
825
826 void (*dev_config)(struct ata_device *dev);
827
828 void (*freeze)(struct ata_port *ap);
829 void (*thaw)(struct ata_port *ap);
830 ata_prereset_fn_t prereset;
831 ata_reset_fn_t softreset;
832 ata_reset_fn_t hardreset;
833 ata_postreset_fn_t postreset;
834 ata_prereset_fn_t pmp_prereset;
835 ata_reset_fn_t pmp_softreset;
836 ata_reset_fn_t pmp_hardreset;
837 ata_postreset_fn_t pmp_postreset;
838 void (*error_handler)(struct ata_port *ap);
839 void (*lost_interrupt)(struct ata_port *ap);
840 void (*post_internal_cmd)(struct ata_queued_cmd *qc);
841
842 /*
843 * Optional features
844 */
845 int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
846 int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
847 void (*pmp_attach)(struct ata_port *ap);
848 void (*pmp_detach)(struct ata_port *ap);
849 int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
850 unsigned hints);
851
852 /*
853 * Start, stop, suspend and resume
854 */
855 int (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
856 int (*port_resume)(struct ata_port *ap);
857 int (*port_start)(struct ata_port *ap);
858 void (*port_stop)(struct ata_port *ap);
859 void (*host_stop)(struct ata_host *host);
860
861 #ifdef CONFIG_ATA_SFF
862 /*
863 * SFF / taskfile oriented ops
864 */
865 void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
866 void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
867 u8 (*sff_check_status)(struct ata_port *ap);
868 u8 (*sff_check_altstatus)(struct ata_port *ap);
869 void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
870 void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
871 void (*sff_exec_command)(struct ata_port *ap,
872 const struct ata_taskfile *tf);
873 unsigned int (*sff_data_xfer)(struct ata_device *dev,
874 unsigned char *buf, unsigned int buflen, int rw);
875 void (*sff_irq_on)(struct ata_port *);
876 bool (*sff_irq_check)(struct ata_port *);
877 void (*sff_irq_clear)(struct ata_port *);
878 void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
879
880 #ifdef CONFIG_ATA_BMDMA
881 void (*bmdma_setup)(struct ata_queued_cmd *qc);
882 void (*bmdma_start)(struct ata_queued_cmd *qc);
883 void (*bmdma_stop)(struct ata_queued_cmd *qc);
884 u8 (*bmdma_status)(struct ata_port *ap);
885 #endif /* CONFIG_ATA_BMDMA */
886 #endif /* CONFIG_ATA_SFF */
887
888 ssize_t (*em_show)(struct ata_port *ap, char *buf);
889 ssize_t (*em_store)(struct ata_port *ap, const char *message,
890 size_t size);
891 ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
892 ssize_t (*sw_activity_store)(struct ata_device *dev,
893 enum sw_activity val);
894 /*
895 * Obsolete
896 */
897 void (*phy_reset)(struct ata_port *ap);
898 void (*eng_timeout)(struct ata_port *ap);
899
900 /*
901 * ->inherits must be the last field and all the preceding
902 * fields must be pointers.
903 */
904 const struct ata_port_operations *inherits;
905 };
906
907 struct ata_port_info {
908 unsigned long flags;
909 unsigned long link_flags;
910 unsigned long pio_mask;
911 unsigned long mwdma_mask;
912 unsigned long udma_mask;
913 struct ata_port_operations *port_ops;
914 void *private_data;
915 };
916
917 struct ata_timing {
918 unsigned short mode; /* ATA mode */
919 unsigned short setup; /* t1 */
920 unsigned short act8b; /* t2 for 8-bit I/O */
921 unsigned short rec8b; /* t2i for 8-bit I/O */
922 unsigned short cyc8b; /* t0 for 8-bit I/O */
923 unsigned short active; /* t2 or tD */
924 unsigned short recover; /* t2i or tK */
925 unsigned short dmack_hold; /* tj */
926 unsigned short cycle; /* t0 */
927 unsigned short udma; /* t2CYCTYP/2 */
928 };
929
930 /*
931 * Core layer - drivers/ata/libata-core.c
932 */
933 extern const unsigned long sata_deb_timing_normal[];
934 extern const unsigned long sata_deb_timing_hotplug[];
935 extern const unsigned long sata_deb_timing_long[];
936
937 extern struct ata_port_operations ata_dummy_port_ops;
938 extern const struct ata_port_info ata_dummy_port_info;
939
940 static inline const unsigned long *
941 sata_ehc_deb_timing(struct ata_eh_context *ehc)
942 {
943 if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
944 return sata_deb_timing_hotplug;
945 else
946 return sata_deb_timing_normal;
947 }
948
949 static inline int ata_port_is_dummy(struct ata_port *ap)
950 {
951 return ap->ops == &ata_dummy_port_ops;
952 }
953
954 extern int sata_set_spd(struct ata_link *link);
955 extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
956 extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
957 int (*check_ready)(struct ata_link *link));
958 extern int sata_link_debounce(struct ata_link *link,
959 const unsigned long *params, unsigned long deadline);
960 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
961 unsigned long deadline);
962 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
963 bool spm_wakeup);
964 extern int sata_link_hardreset(struct ata_link *link,
965 const unsigned long *timing, unsigned long deadline,
966 bool *online, int (*check_ready)(struct ata_link *));
967 extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
968 unsigned long deadline);
969 extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
970
971 extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
972 extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
973 const struct ata_port_info * const * ppi, int n_ports);
974 extern int ata_slave_link_init(struct ata_port *ap);
975 extern int ata_host_start(struct ata_host *host);
976 extern int ata_host_register(struct ata_host *host,
977 struct scsi_host_template *sht);
978 extern int ata_host_activate(struct ata_host *host, int irq,
979 irq_handler_t irq_handler, unsigned long irq_flags,
980 struct scsi_host_template *sht);
981 extern void ata_host_detach(struct ata_host *host);
982 extern void ata_host_init(struct ata_host *, struct device *,
983 unsigned long, struct ata_port_operations *);
984 extern int ata_scsi_detect(struct scsi_host_template *sht);
985 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
986 extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
987 extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
988 int cmd, void __user *arg);
989 extern void ata_sas_port_destroy(struct ata_port *);
990 extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
991 struct ata_port_info *, struct Scsi_Host *);
992 extern int ata_sas_port_init(struct ata_port *);
993 extern int ata_sas_port_start(struct ata_port *ap);
994 extern void ata_sas_port_stop(struct ata_port *ap);
995 extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
996 extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
997 extern int sata_scr_valid(struct ata_link *link);
998 extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
999 extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
1000 extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
1001 extern bool ata_link_online(struct ata_link *link);
1002 extern bool ata_link_offline(struct ata_link *link);
1003 #ifdef CONFIG_PM
1004 extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
1005 extern void ata_host_resume(struct ata_host *host);
1006 #endif
1007 extern int ata_ratelimit(void);
1008 extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
1009 extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
1010 u32 val, unsigned long interval, unsigned long timeout);
1011 extern int atapi_cmd_type(u8 opcode);
1012 extern void ata_tf_to_fis(const struct ata_taskfile *tf,
1013 u8 pmp, int is_cmd, u8 *fis);
1014 extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
1015 extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
1016 unsigned long mwdma_mask, unsigned long udma_mask);
1017 extern void ata_unpack_xfermask(unsigned long xfer_mask,
1018 unsigned long *pio_mask, unsigned long *mwdma_mask,
1019 unsigned long *udma_mask);
1020 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
1021 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
1022 extern int ata_xfer_mode2shift(unsigned long xfer_mode);
1023 extern const char *ata_mode_string(unsigned long xfer_mask);
1024 extern unsigned long ata_id_xfermask(const u16 *id);
1025 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
1026 extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
1027 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
1028 unsigned int n_elem);
1029 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
1030 extern void ata_dev_disable(struct ata_device *adev);
1031 extern void ata_id_string(const u16 *id, unsigned char *s,
1032 unsigned int ofs, unsigned int len);
1033 extern void ata_id_c_string(const u16 *id, unsigned char *s,
1034 unsigned int ofs, unsigned int len);
1035 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
1036 struct ata_taskfile *tf, u16 *id);
1037 extern void ata_qc_complete(struct ata_queued_cmd *qc);
1038 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
1039 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
1040 extern int ata_std_bios_param(struct scsi_device *sdev,
1041 struct block_device *bdev,
1042 sector_t capacity, int geom[]);
1043 extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
1044 extern int ata_scsi_slave_config(struct scsi_device *sdev);
1045 extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
1046 extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
1047 int queue_depth, int reason);
1048 extern struct ata_device *ata_dev_pair(struct ata_device *adev);
1049 extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
1050 extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
1051 extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);
1052
1053 extern int ata_cable_40wire(struct ata_port *ap);
1054 extern int ata_cable_80wire(struct ata_port *ap);
1055 extern int ata_cable_sata(struct ata_port *ap);
1056 extern int ata_cable_ignore(struct ata_port *ap);
1057 extern int ata_cable_unknown(struct ata_port *ap);
1058
1059 /* Timing helpers */
1060 extern unsigned int ata_pio_need_iordy(const struct ata_device *);
1061 extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
1062 extern int ata_timing_compute(struct ata_device *, unsigned short,
1063 struct ata_timing *, int, int);
1064 extern void ata_timing_merge(const struct ata_timing *,
1065 const struct ata_timing *, struct ata_timing *,
1066 unsigned int);
1067 extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
1068
1069 /* PCI */
1070 #ifdef CONFIG_PCI
1071 struct pci_dev;
1072
1073 struct pci_bits {
1074 unsigned int reg; /* PCI config register to read */
1075 unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
1076 unsigned long mask;
1077 unsigned long val;
1078 };
1079
1080 extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
1081 extern void ata_pci_remove_one(struct pci_dev *pdev);
1082
1083 #ifdef CONFIG_PM
1084 extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
1085 extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
1086 extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
1087 extern int ata_pci_device_resume(struct pci_dev *pdev);
1088 #endif /* CONFIG_PM */
1089 #endif /* CONFIG_PCI */
1090
1091 /*
1092 * ACPI - drivers/ata/libata-acpi.c
1093 */
1094 #ifdef CONFIG_ATA_ACPI
1095 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1096 {
1097 if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
1098 return &ap->__acpi_init_gtm;
1099 return NULL;
1100 }
1101 int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
1102 int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
1103 unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
1104 const struct ata_acpi_gtm *gtm);
1105 int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
1106 #else
1107 static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
1108 {
1109 return NULL;
1110 }
1111
1112 static inline int ata_acpi_stm(const struct ata_port *ap,
1113 struct ata_acpi_gtm *stm)
1114 {
1115 return -ENOSYS;
1116 }
1117
1118 static inline int ata_acpi_gtm(const struct ata_port *ap,
1119 struct ata_acpi_gtm *stm)
1120 {
1121 return -ENOSYS;
1122 }
1123
1124 static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
1125 const struct ata_acpi_gtm *gtm)
1126 {
1127 return 0;
1128 }
1129
1130 static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
1131 const struct ata_acpi_gtm *gtm)
1132 {
1133 return 0;
1134 }
1135 #endif
1136
1137 /*
1138 * EH - drivers/ata/libata-eh.c
1139 */
1140 extern void ata_port_schedule_eh(struct ata_port *ap);
1141 extern int ata_link_abort(struct ata_link *link);
1142 extern int ata_port_abort(struct ata_port *ap);
1143 extern int ata_port_freeze(struct ata_port *ap);
1144 extern int sata_async_notification(struct ata_port *ap);
1145
1146 extern void ata_eh_freeze_port(struct ata_port *ap);
1147 extern void ata_eh_thaw_port(struct ata_port *ap);
1148
1149 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
1150 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
1151 extern void ata_eh_analyze_ncq_error(struct ata_link *link);
1152
1153 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
1154 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
1155 ata_postreset_fn_t postreset);
1156 extern void ata_std_error_handler(struct ata_port *ap);
1157
1158 /*
1159 * Base operations to inherit from and initializers for sht
1160 *
1161 * Operations
1162 *
1163 * base : Common to all libata drivers.
1164 * sata : SATA controllers w/ native interface.
1165 * pmp : SATA controllers w/ PMP support.
1166 * sff : SFF ATA controllers w/o BMDMA support.
1167 * bmdma : SFF ATA controllers w/ BMDMA support.
1168 *
1169 * sht initializers
1170 *
1171 * BASE : Common to all libata drivers. The user must set
1172 * sg_tablesize and dma_boundary.
1173 * PIO : SFF ATA controllers w/ only PIO support.
1174 * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
1175 * dma_boundary are set to BMDMA limits.
1176 * NCQ : SATA controllers supporting NCQ. The user must set
1177 * sg_tablesize, dma_boundary and can_queue.
1178 */
1179 extern const struct ata_port_operations ata_base_port_ops;
1180 extern const struct ata_port_operations sata_port_ops;
1181 extern struct device_attribute *ata_common_sdev_attrs[];
1182
1183 #define ATA_BASE_SHT(drv_name) \
1184 .module = THIS_MODULE, \
1185 .name = drv_name, \
1186 .ioctl = ata_scsi_ioctl, \
1187 .queuecommand = ata_scsi_queuecmd, \
1188 .can_queue = ATA_DEF_QUEUE, \
1189 .this_id = ATA_SHT_THIS_ID, \
1190 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
1191 .emulated = ATA_SHT_EMULATED, \
1192 .use_clustering = ATA_SHT_USE_CLUSTERING, \
1193 .proc_name = drv_name, \
1194 .slave_configure = ata_scsi_slave_config, \
1195 .slave_destroy = ata_scsi_slave_destroy, \
1196 .bios_param = ata_std_bios_param, \
1197 .unlock_native_capacity = ata_scsi_unlock_native_capacity, \
1198 .sdev_attrs = ata_common_sdev_attrs
1199
1200 #define ATA_NCQ_SHT(drv_name) \
1201 ATA_BASE_SHT(drv_name), \
1202 .change_queue_depth = ata_scsi_change_queue_depth
1203
1204 /*
1205 * PMP helpers
1206 */
1207 #ifdef CONFIG_SATA_PMP
1208 static inline bool sata_pmp_supported(struct ata_port *ap)
1209 {
1210 return ap->flags & ATA_FLAG_PMP;
1211 }
1212
1213 static inline bool sata_pmp_attached(struct ata_port *ap)
1214 {
1215 return ap->nr_pmp_links != 0;
1216 }
1217
1218 static inline int ata_is_host_link(const struct ata_link *link)
1219 {
1220 return link == &link->ap->link || link == link->ap->slave_link;
1221 }
1222 #else /* CONFIG_SATA_PMP */
1223 static inline bool sata_pmp_supported(struct ata_port *ap)
1224 {
1225 return false;
1226 }
1227
1228 static inline bool sata_pmp_attached(struct ata_port *ap)
1229 {
1230 return false;
1231 }
1232
1233 static inline int ata_is_host_link(const struct ata_link *link)
1234 {
1235 return 1;
1236 }
1237 #endif /* CONFIG_SATA_PMP */
1238
1239 static inline int sata_srst_pmp(struct ata_link *link)
1240 {
1241 if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
1242 return SATA_PMP_CTRL_PORT;
1243 return link->pmp;
1244 }
1245
1246 /*
1247 * printk helpers
1248 */
1249 #define ata_port_printk(ap, lv, fmt, args...) \
1250 printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
1251
1252 #define ata_link_printk(link, lv, fmt, args...) do { \
1253 if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
1254 printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
1255 (link)->pmp , ##args); \
1256 else \
1257 printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
1258 } while(0)
1259
1260 #define ata_dev_printk(dev, lv, fmt, args...) \
1261 printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \
1262 (dev)->link->pmp + (dev)->devno , ##args)
1263
1264 /*
1265 * ata_eh_info helpers
1266 */
1267 extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1268 __attribute__ ((format (printf, 2, 3)));
1269 extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
1270 __attribute__ ((format (printf, 2, 3)));
1271 extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
1272
1273 static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
1274 {
1275 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
1276 ehi->flags |= ATA_EHI_HOTPLUGGED;
1277 ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
1278 ehi->err_mask |= AC_ERR_ATA_BUS;
1279 }
1280
1281 /*
1282 * port description helpers
1283 */
1284 extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
1285 __attribute__ ((format (printf, 2, 3)));
1286 #ifdef CONFIG_PCI
1287 extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
1288 const char *name);
1289 #endif
1290
1291 static inline unsigned int ata_tag_valid(unsigned int tag)
1292 {
1293 return (tag < ATA_MAX_QUEUE) ? 1 : 0;
1294 }
1295
1296 static inline unsigned int ata_tag_internal(unsigned int tag)
1297 {
1298 return tag == ATA_TAG_INTERNAL;
1299 }
1300
1301 /*
1302 * device helpers
1303 */
1304 static inline unsigned int ata_class_enabled(unsigned int class)
1305 {
1306 return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
1307 class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
1308 }
1309
1310 static inline unsigned int ata_class_disabled(unsigned int class)
1311 {
1312 return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
1313 class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
1314 }
1315
1316 static inline unsigned int ata_class_absent(unsigned int class)
1317 {
1318 return !ata_class_enabled(class) && !ata_class_disabled(class);
1319 }
1320
1321 static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
1322 {
1323 return ata_class_enabled(dev->class);
1324 }
1325
1326 static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
1327 {
1328 return ata_class_disabled(dev->class);
1329 }
1330
1331 static inline unsigned int ata_dev_absent(const struct ata_device *dev)
1332 {
1333 return ata_class_absent(dev->class);
1334 }
1335
1336 /*
1337 * link helpers
1338 */
1339 static inline int ata_link_max_devices(const struct ata_link *link)
1340 {
1341 if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
1342 return 2;
1343 return 1;
1344 }
1345
1346 static inline int ata_link_active(struct ata_link *link)
1347 {
1348 return ata_tag_valid(link->active_tag) || link->sactive;
1349 }
1350
1351 /*
1352 * Iterators
1353 *
1354 * ATA_LITER_* constants are used to select link iteration mode and
1355 * ATA_DITER_* device iteration mode.
1356 *
1357 * For a custom iteration directly using ata_{link|dev}_next(), if
1358 * @link or @dev, respectively, is NULL, the first element is
1359 * returned. @dev and @link can be any valid device or link and the
1360 * next element according to the iteration mode will be returned.
1361 * After the last element, NULL is returned.
1362 */
1363 enum ata_link_iter_mode {
1364 ATA_LITER_EDGE, /* if present, PMP links only; otherwise,
1365 * host link. no slave link */
1366 ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */
1367 ATA_LITER_PMP_FIRST, /* PMP links followed by host link,
1368 * slave link still comes after host link */
1369 };
1370
1371 enum ata_dev_iter_mode {
1372 ATA_DITER_ENABLED,
1373 ATA_DITER_ENABLED_REVERSE,
1374 ATA_DITER_ALL,
1375 ATA_DITER_ALL_REVERSE,
1376 };
1377
1378 extern struct ata_link *ata_link_next(struct ata_link *link,
1379 struct ata_port *ap,
1380 enum ata_link_iter_mode mode);
1381
1382 extern struct ata_device *ata_dev_next(struct ata_device *dev,
1383 struct ata_link *link,
1384 enum ata_dev_iter_mode mode);
1385
1386 /*
1387 * Shortcut notation for iterations
1388 *
1389 * ata_for_each_link() iterates over each link of @ap according to
1390 * @mode. @link points to the current link in the loop. @link is
1391 * NULL after loop termination. ata_for_each_dev() works the same way
1392 * except that it iterates over each device of @link.
1393 *
1394 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
1395 * specified when using the following shorthand notations. Only the
1396 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
1397 * specified. This not only increases brevity but also makes it
1398 * impossible to use ATA_LITER_* for device iteration or vice-versa.
1399 */
1400 #define ata_for_each_link(link, ap, mode) \
1401 for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
1402 (link) = ata_link_next((link), (ap), ATA_LITER_##mode))
1403
1404 #define ata_for_each_dev(dev, link, mode) \
1405 for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
1406 (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))
1407
1408 /**
1409 * ata_ncq_enabled - Test whether NCQ is enabled
1410 * @dev: ATA device to test for
1411 *
1412 * LOCKING:
1413 * spin_lock_irqsave(host lock)
1414 *
1415 * RETURNS:
1416 * 1 if NCQ is enabled for @dev, 0 otherwise.
1417 */
1418 static inline int ata_ncq_enabled(struct ata_device *dev)
1419 {
1420 return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
1421 ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
1422 }
1423
1424 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
1425 {
1426 qc->tf.ctl |= ATA_NIEN;
1427 }
1428
1429 static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
1430 unsigned int tag)
1431 {
1432 if (likely(ata_tag_valid(tag)))
1433 return &ap->qcmd[tag];
1434 return NULL;
1435 }
1436
1437 static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
1438 unsigned int tag)
1439 {
1440 struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
1441
1442 if (unlikely(!qc) || !ap->ops->error_handler)
1443 return qc;
1444
1445 if ((qc->flags & (ATA_QCFLAG_ACTIVE |
1446 ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
1447 return qc;
1448
1449 return NULL;
1450 }
1451
1452 static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
1453 {
1454 return qc->nbytes - min(qc->extrabytes, qc->nbytes);
1455 }
1456
1457 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1458 {
1459 memset(tf, 0, sizeof(*tf));
1460
1461 #ifdef CONFIG_ATA_SFF
1462 tf->ctl = dev->link->ap->ctl;
1463 #else
1464 tf->ctl = ATA_DEVCTL_OBS;
1465 #endif
1466 if (dev->devno == 0)
1467 tf->device = ATA_DEVICE_OBS;
1468 else
1469 tf->device = ATA_DEVICE_OBS | ATA_DEV1;
1470 }
1471
1472 static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
1473 {
1474 qc->dma_dir = DMA_NONE;
1475 qc->sg = NULL;
1476 qc->flags = 0;
1477 qc->cursg = NULL;
1478 qc->cursg_ofs = 0;
1479 qc->nbytes = qc->extrabytes = qc->curbytes = 0;
1480 qc->n_elem = 0;
1481 qc->err_mask = 0;
1482 qc->sect_size = ATA_SECT_SIZE;
1483
1484 ata_tf_init(qc->dev, &qc->tf);
1485
1486 /* init result_tf such that it indicates normal completion */
1487 qc->result_tf.command = ATA_DRDY;
1488 qc->result_tf.feature = 0;
1489 }
1490
1491 static inline int ata_try_flush_cache(const struct ata_device *dev)
1492 {
1493 return ata_id_wcache_enabled(dev->id) ||
1494 ata_id_has_flush(dev->id) ||
1495 ata_id_has_flush_ext(dev->id);
1496 }
1497
1498 static inline unsigned int ac_err_mask(u8 status)
1499 {
1500 if (status & (ATA_BUSY | ATA_DRQ))
1501 return AC_ERR_HSM;
1502 if (status & (ATA_ERR | ATA_DF))
1503 return AC_ERR_DEV;
1504 return 0;
1505 }
1506
1507 static inline unsigned int __ac_err_mask(u8 status)
1508 {
1509 unsigned int mask = ac_err_mask(status);
1510 if (mask == 0)
1511 return AC_ERR_OTHER;
1512 return mask;
1513 }
1514
1515 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
1516 {
1517 return *(struct ata_port **)&host->hostdata[0];
1518 }
1519
1520 static inline int ata_check_ready(u8 status)
1521 {
1522 if (!(status & ATA_BUSY))
1523 return 1;
1524
1525 /* 0xff indicates either no device or device not ready */
1526 if (status == 0xff)
1527 return -ENODEV;
1528
1529 return 0;
1530 }
1531
1532 static inline unsigned long ata_deadline(unsigned long from_jiffies,
1533 unsigned long timeout_msecs)
1534 {
1535 return from_jiffies + msecs_to_jiffies(timeout_msecs);
1536 }
1537
1538 /* Don't open code these in drivers as there are traps. Firstly the range may
1539 change in future hardware and specs, secondly 0xFF means 'no DMA' but is
1540 > UDMA_0. Dyma ddreigiau */
1541
1542 static inline int ata_using_mwdma(struct ata_device *adev)
1543 {
1544 if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
1545 return 1;
1546 return 0;
1547 }
1548
1549 static inline int ata_using_udma(struct ata_device *adev)
1550 {
1551 if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
1552 return 1;
1553 return 0;
1554 }
1555
1556 static inline int ata_dma_enabled(struct ata_device *adev)
1557 {
1558 return (adev->dma_mode == 0xFF ? 0 : 1);
1559 }
1560
1561 /**************************************************************************
1562 * PMP - drivers/ata/libata-pmp.c
1563 */
1564 #ifdef CONFIG_SATA_PMP
1565
1566 extern const struct ata_port_operations sata_pmp_port_ops;
1567
1568 extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
1569 extern void sata_pmp_error_handler(struct ata_port *ap);
1570
1571 #else /* CONFIG_SATA_PMP */
1572
1573 #define sata_pmp_port_ops sata_port_ops
1574 #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer
1575 #define sata_pmp_error_handler ata_std_error_handler
1576
1577 #endif /* CONFIG_SATA_PMP */
1578
1579
1580 /**************************************************************************
1581 * SFF - drivers/ata/libata-sff.c
1582 */
1583 #ifdef CONFIG_ATA_SFF
1584
1585 extern const struct ata_port_operations ata_sff_port_ops;
1586 extern const struct ata_port_operations ata_bmdma32_port_ops;
1587
1588 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
1589 #define ATA_PIO_SHT(drv_name) \
1590 ATA_BASE_SHT(drv_name), \
1591 .sg_tablesize = LIBATA_MAX_PRD, \
1592 .dma_boundary = ATA_DMA_BOUNDARY
1593
1594 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
1595 extern u8 ata_sff_check_status(struct ata_port *ap);
1596 extern void ata_sff_pause(struct ata_port *ap);
1597 extern void ata_sff_dma_pause(struct ata_port *ap);
1598 extern int ata_sff_busy_sleep(struct ata_port *ap,
1599 unsigned long timeout_pat, unsigned long timeout);
1600 extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
1601 extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
1602 extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
1603 extern void ata_sff_exec_command(struct ata_port *ap,
1604 const struct ata_taskfile *tf);
1605 extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
1606 unsigned char *buf, unsigned int buflen, int rw);
1607 extern unsigned int ata_sff_data_xfer32(struct ata_device *dev,
1608 unsigned char *buf, unsigned int buflen, int rw);
1609 extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
1610 unsigned char *buf, unsigned int buflen, int rw);
1611 extern void ata_sff_irq_on(struct ata_port *ap);
1612 extern void ata_sff_irq_clear(struct ata_port *ap);
1613 extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
1614 u8 status, int in_wq);
1615 extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
1616 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
1617 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
1618 extern unsigned int ata_sff_port_intr(struct ata_port *ap,
1619 struct ata_queued_cmd *qc);
1620 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
1621 extern void ata_sff_lost_interrupt(struct ata_port *ap);
1622 extern void ata_sff_freeze(struct ata_port *ap);
1623 extern void ata_sff_thaw(struct ata_port *ap);
1624 extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
1625 extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
1626 u8 *r_err);
1627 extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
1628 unsigned long deadline);
1629 extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
1630 unsigned long deadline);
1631 extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
1632 unsigned long deadline);
1633 extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
1634 extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
1635 extern void ata_sff_error_handler(struct ata_port *ap);
1636 extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
1637 #ifdef CONFIG_PCI
1638 extern int ata_pci_sff_init_host(struct ata_host *host);
1639 extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
1640 const struct ata_port_info * const * ppi,
1641 struct ata_host **r_host);
1642 extern int ata_pci_sff_activate_host(struct ata_host *host,
1643 irq_handler_t irq_handler,
1644 struct scsi_host_template *sht);
1645 extern int ata_pci_sff_init_one(struct pci_dev *pdev,
1646 const struct ata_port_info * const * ppi,
1647 struct scsi_host_template *sht, void *host_priv, int hflags);
1648 #endif /* CONFIG_PCI */
1649
1650 #ifdef CONFIG_ATA_BMDMA
1651
1652 extern const struct ata_port_operations ata_bmdma_port_ops;
1653
1654 #define ATA_BMDMA_SHT(drv_name) \
1655 ATA_BASE_SHT(drv_name), \
1656 .sg_tablesize = LIBATA_MAX_PRD, \
1657 .dma_boundary = ATA_DMA_BOUNDARY
1658
1659 extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
1660 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
1661 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
1662 extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
1663 struct ata_queued_cmd *qc);
1664 extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
1665 extern void ata_bmdma_error_handler(struct ata_port *ap);
1666 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
1667 extern void ata_bmdma_irq_clear(struct ata_port *ap);
1668 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
1669 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
1670 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
1671 extern u8 ata_bmdma_status(struct ata_port *ap);
1672 extern int ata_bmdma_port_start(struct ata_port *ap);
1673 extern int ata_bmdma_port_start32(struct ata_port *ap);
1674
1675 #ifdef CONFIG_PCI
1676 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
1677 extern void ata_pci_bmdma_init(struct ata_host *host);
1678 extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
1679 const struct ata_port_info * const * ppi,
1680 struct ata_host **r_host);
1681 extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
1682 const struct ata_port_info * const * ppi,
1683 struct scsi_host_template *sht,
1684 void *host_priv, int hflags);
1685 #endif /* CONFIG_PCI */
1686 #endif /* CONFIG_ATA_BMDMA */
1687
1688 /**
1689 * ata_sff_busy_wait - Wait for a port status register
1690 * @ap: Port to wait for.
1691 * @bits: bits that must be clear
1692 * @max: number of 10uS waits to perform
1693 *
1694 * Waits up to max*10 microseconds for the selected bits in the port's
1695 * status register to be cleared.
1696 * Returns final value of status register.
1697 *
1698 * LOCKING:
1699 * Inherited from caller.
1700 */
1701 static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
1702 unsigned int max)
1703 {
1704 u8 status;
1705
1706 do {
1707 udelay(10);
1708 status = ap->ops->sff_check_status(ap);
1709 max--;
1710 } while (status != 0xff && (status & bits) && (max > 0));
1711
1712 return status;
1713 }
1714
1715 /**
1716 * ata_wait_idle - Wait for a port to be idle.
1717 * @ap: Port to wait for.
1718 *
1719 * Waits up to 10ms for port's BUSY and DRQ signals to clear.
1720 * Returns final value of status register.
1721 *
1722 * LOCKING:
1723 * Inherited from caller.
1724 */
1725 static inline u8 ata_wait_idle(struct ata_port *ap)
1726 {
1727 u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
1728
1729 #ifdef ATA_DEBUG
1730 if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
1731 ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
1732 status);
1733 #endif
1734
1735 return status;
1736 }
1737 #endif /* CONFIG_ATA_SFF */
1738
1739 #endif /* __LINUX_LIBATA_H__ */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree