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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 | |
41 | /* |
42 | * Define if arch has non-standard setup. This is a _PCI_ standard |
43 | * not a legacy or ISA standard. |
44 | */ |
45 | #ifdef CONFIG_ATA_NONSTANDARD |
46 | #include <asm/libata-portmap.h> |
47 | #else |
48 | #include <asm-generic/libata-portmap.h> |
49 | #endif |
50 | |
51 | /* |
52 | * compile-time options: to be removed as soon as all the drivers are |
53 | * converted to the new debugging mechanism |
54 | */ |
55 | #undef ATA_DEBUG /* debugging output */ |
56 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
57 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
58 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ |
59 | |
60 | |
61 | /* note: prints function name for you */ |
62 | #ifdef ATA_DEBUG |
63 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
64 | #ifdef ATA_VERBOSE_DEBUG |
65 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
66 | #else |
67 | #define VPRINTK(fmt, args...) |
68 | #endif /* ATA_VERBOSE_DEBUG */ |
69 | #else |
70 | #define DPRINTK(fmt, args...) |
71 | #define VPRINTK(fmt, args...) |
72 | #endif /* ATA_DEBUG */ |
73 | |
74 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
75 | |
76 | /* NEW: debug levels */ |
77 | #define HAVE_LIBATA_MSG 1 |
78 | |
79 | enum { |
80 | ATA_MSG_DRV = 0x0001, |
81 | ATA_MSG_INFO = 0x0002, |
82 | ATA_MSG_PROBE = 0x0004, |
83 | ATA_MSG_WARN = 0x0008, |
84 | ATA_MSG_MALLOC = 0x0010, |
85 | ATA_MSG_CTL = 0x0020, |
86 | ATA_MSG_INTR = 0x0040, |
87 | ATA_MSG_ERR = 0x0080, |
88 | }; |
89 | |
90 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) |
91 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) |
92 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) |
93 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) |
94 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) |
95 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) |
96 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) |
97 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) |
98 | |
99 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) |
100 | { |
101 | if (dval < 0 || dval >= (sizeof(u32) * 8)) |
102 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ |
103 | if (!dval) |
104 | return 0; |
105 | return (1 << dval) - 1; |
106 | } |
107 | |
108 | /* defines only for the constants which don't work well as enums */ |
109 | #define ATA_TAG_POISON 0xfafbfcfdU |
110 | |
111 | enum { |
112 | /* various global constants */ |
113 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
114 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
115 | ATA_DEF_QUEUE = 1, |
116 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
117 | ATA_MAX_QUEUE = 32, |
118 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
119 | ATA_SHORT_PAUSE = 16, |
120 | |
121 | ATAPI_MAX_DRAIN = 16 << 10, |
122 | |
123 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
124 | |
125 | ATA_SHT_EMULATED = 1, |
126 | ATA_SHT_CMD_PER_LUN = 1, |
127 | ATA_SHT_THIS_ID = -1, |
128 | ATA_SHT_USE_CLUSTERING = 1, |
129 | |
130 | /* struct ata_device stuff */ |
131 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
132 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
133 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
134 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
135 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
136 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
137 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
138 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
139 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
140 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ |
141 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
142 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
143 | |
144 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
145 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ |
146 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
147 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
148 | ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
149 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
150 | |
151 | ATA_DFLAG_DETACH = (1 << 24), |
152 | ATA_DFLAG_DETACHED = (1 << 25), |
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_NONE = 9, /* no device */ |
164 | |
165 | /* struct ata_link flags */ |
166 | ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
167 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
168 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ |
169 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ |
170 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, |
171 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
172 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
173 | ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
174 | |
175 | /* struct ata_port flags */ |
176 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
177 | /* (doesn't imply presence) */ |
178 | ATA_FLAG_SATA = (1 << 1), |
179 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ |
180 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ |
181 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ |
182 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ |
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_IPM = (1 << 20), /* driver can handle IPM */ |
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 | /* The following flag belongs to ap->pflags but is kept in |
205 | * ap->flags because it's referenced in many LLDs and will be |
206 | * removed in not-too-distant future. |
207 | */ |
208 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ |
209 | |
210 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
211 | |
212 | |
213 | /* struct ata_port pflags */ |
214 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
215 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
216 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
217 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
218 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
219 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
220 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
221 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
222 | ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
223 | ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ |
224 | |
225 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
226 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
227 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
228 | |
229 | ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ |
230 | ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ |
231 | |
232 | /* struct ata_queued_cmd flags */ |
233 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
234 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
235 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
236 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
237 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
238 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
239 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
240 | |
241 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
242 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ |
243 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ |
244 | |
245 | /* host set flags */ |
246 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
247 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
248 | ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
249 | |
250 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
251 | |
252 | /* various lengths of time */ |
253 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
254 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ |
255 | ATA_TMOUT_INTERNAL_QUICK = 5000, |
256 | ATA_TMOUT_MAX_PARK = 30000, |
257 | |
258 | /* FIXME: GoVault needs 2s but we can't afford that without |
259 | * parallel probing. 800ms is enough for iVDR disk |
260 | * HHD424020F7SV00. Increase to 2secs when parallel probing |
261 | * is in place. |
262 | */ |
263 | ATA_TMOUT_FF_WAIT = 800, |
264 | |
265 | /* Spec mandates to wait for ">= 2ms" before checking status |
266 | * after reset. We wait 150ms, because that was the magic |
267 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for |
268 | * the period of time between when the ATA command register is |
269 | * written, and then status is checked. Because waiting for |
270 | * "a while" before checking status is fine, post SRST, we |
271 | * perform this magic delay here as well. |
272 | * |
273 | * Old drivers/ide uses the 2mS rule and then waits for ready. |
274 | */ |
275 | ATA_WAIT_AFTER_RESET = 150, |
276 | |
277 | /* If PMP is supported, we have to do follow-up SRST. As some |
278 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are |
279 | * advised to wait only for the following duration before |
280 | * doing SRST. |
281 | */ |
282 | ATA_TMOUT_PMP_SRST_WAIT = 5000, |
283 | |
284 | /* ATA bus states */ |
285 | BUS_UNKNOWN = 0, |
286 | BUS_DMA = 1, |
287 | BUS_IDLE = 2, |
288 | BUS_NOINTR = 3, |
289 | BUS_NODATA = 4, |
290 | BUS_TIMER = 5, |
291 | BUS_PIO = 6, |
292 | BUS_EDD = 7, |
293 | BUS_IDENTIFY = 8, |
294 | BUS_PACKET = 9, |
295 | |
296 | /* SATA port states */ |
297 | PORT_UNKNOWN = 0, |
298 | PORT_ENABLED = 1, |
299 | PORT_DISABLED = 2, |
300 | |
301 | /* encoding various smaller bitmaps into a single |
302 | * unsigned long bitmap |
303 | */ |
304 | ATA_NR_PIO_MODES = 7, |
305 | ATA_NR_MWDMA_MODES = 5, |
306 | ATA_NR_UDMA_MODES = 8, |
307 | |
308 | ATA_SHIFT_PIO = 0, |
309 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
310 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, |
311 | |
312 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
313 | ATA_DMA_PAD_SZ = 4, |
314 | |
315 | /* ering size */ |
316 | ATA_ERING_SIZE = 32, |
317 | |
318 | /* return values for ->qc_defer */ |
319 | ATA_DEFER_LINK = 1, |
320 | ATA_DEFER_PORT = 2, |
321 | |
322 | /* desc_len for ata_eh_info and context */ |
323 | ATA_EH_DESC_LEN = 80, |
324 | |
325 | /* reset / recovery action types */ |
326 | ATA_EH_REVALIDATE = (1 << 0), |
327 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
328 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ |
329 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
330 | ATA_EH_ENABLE_LINK = (1 << 3), |
331 | ATA_EH_LPM = (1 << 4), /* link power management action */ |
332 | ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
333 | |
334 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
335 | ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
336 | ATA_EH_ENABLE_LINK | ATA_EH_LPM, |
337 | |
338 | /* ata_eh_info->flags */ |
339 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
340 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
341 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
342 | |
343 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
344 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
345 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
346 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
347 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ |
348 | |
349 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
350 | |
351 | /* mask of flags to transfer *to* the slave link */ |
352 | ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, |
353 | |
354 | /* max tries if error condition is still set after ->error_handler */ |
355 | ATA_EH_MAX_TRIES = 5, |
356 | |
357 | /* sometimes resuming a link requires several retries */ |
358 | ATA_LINK_RESUME_TRIES = 5, |
359 | |
360 | /* how hard are we gonna try to probe/recover devices */ |
361 | ATA_PROBE_MAX_TRIES = 3, |
362 | ATA_EH_DEV_TRIES = 3, |
363 | ATA_EH_PMP_TRIES = 5, |
364 | ATA_EH_PMP_LINK_TRIES = 3, |
365 | |
366 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
367 | |
368 | /* This should match the actual table size of |
369 | * ata_eh_cmd_timeout_table in libata-eh.c. |
370 | */ |
371 | ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 5, |
372 | |
373 | /* Horkage types. May be set by libata or controller on drives |
374 | (some horkage may be drive/controller pair dependant */ |
375 | |
376 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
377 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
378 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
379 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
380 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
381 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
382 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
383 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
384 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
385 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
386 | ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
387 | ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
388 | not multiple of 16 bytes */ |
389 | ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ |
390 | ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ |
391 | ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ |
392 | ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ |
393 | |
394 | /* DMA mask for user DMA control: User visible values; DO NOT |
395 | renumber */ |
396 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ |
397 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ |
398 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ |
399 | |
400 | /* ATAPI command types */ |
401 | ATAPI_READ = 0, /* READs */ |
402 | ATAPI_WRITE = 1, /* WRITEs */ |
403 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ |
404 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
405 | ATAPI_MISC = 4, /* the rest */ |
406 | |
407 | /* Timing constants */ |
408 | ATA_TIMING_SETUP = (1 << 0), |
409 | ATA_TIMING_ACT8B = (1 << 1), |
410 | ATA_TIMING_REC8B = (1 << 2), |
411 | ATA_TIMING_CYC8B = (1 << 3), |
412 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
413 | ATA_TIMING_CYC8B, |
414 | ATA_TIMING_ACTIVE = (1 << 4), |
415 | ATA_TIMING_RECOVER = (1 << 5), |
416 | ATA_TIMING_DMACK_HOLD = (1 << 6), |
417 | ATA_TIMING_CYCLE = (1 << 7), |
418 | ATA_TIMING_UDMA = (1 << 8), |
419 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
420 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
421 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
422 | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
423 | ATA_TIMING_UDMA, |
424 | |
425 | /* ACPI constants */ |
426 | ATA_ACPI_FILTER_SETXFER = 1 << 0, |
427 | ATA_ACPI_FILTER_LOCK = 1 << 1, |
428 | ATA_ACPI_FILTER_DIPM = 1 << 2, |
429 | ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ |
430 | ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ |
431 | |
432 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | |
433 | ATA_ACPI_FILTER_LOCK | |
434 | ATA_ACPI_FILTER_DIPM, |
435 | }; |
436 | |
437 | enum ata_xfer_mask { |
438 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) |
439 | << ATA_SHIFT_PIO, |
440 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) |
441 | << ATA_SHIFT_MWDMA, |
442 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) |
443 | << ATA_SHIFT_UDMA, |
444 | }; |
445 | |
446 | enum hsm_task_states { |
447 | HSM_ST_IDLE, /* no command on going */ |
448 | HSM_ST_FIRST, /* (waiting the device to) |
449 | write CDB or first data block */ |
450 | HSM_ST, /* (waiting the device to) transfer data */ |
451 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
452 | HSM_ST_ERR, /* error */ |
453 | }; |
454 | |
455 | enum ata_completion_errors { |
456 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
457 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
458 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
459 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
460 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
461 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
462 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
463 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
464 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
465 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
466 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
467 | }; |
468 | |
469 | /* forward declarations */ |
470 | struct scsi_device; |
471 | struct ata_port_operations; |
472 | struct ata_port; |
473 | struct ata_link; |
474 | struct ata_queued_cmd; |
475 | |
476 | /* typedefs */ |
477 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
478 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
479 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, |
480 | unsigned long deadline); |
481 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
482 | |
483 | /* |
484 | * host pm policy: If you alter this, you also need to alter libata-scsi.c |
485 | * (for the ascii descriptions) |
486 | */ |
487 | enum link_pm { |
488 | NOT_AVAILABLE, |
489 | MIN_POWER, |
490 | MAX_PERFORMANCE, |
491 | MEDIUM_POWER, |
492 | }; |
493 | extern struct device_attribute dev_attr_link_power_management_policy; |
494 | extern struct device_attribute dev_attr_unload_heads; |
495 | extern struct device_attribute dev_attr_em_message_type; |
496 | extern struct device_attribute dev_attr_em_message; |
497 | extern struct device_attribute dev_attr_sw_activity; |
498 | |
499 | enum sw_activity { |
500 | OFF, |
501 | BLINK_ON, |
502 | BLINK_OFF, |
503 | }; |
504 | |
505 | #ifdef CONFIG_ATA_SFF |
506 | struct ata_ioports { |
507 | void __iomem *cmd_addr; |
508 | void __iomem *data_addr; |
509 | void __iomem *error_addr; |
510 | void __iomem *feature_addr; |
511 | void __iomem *nsect_addr; |
512 | void __iomem *lbal_addr; |
513 | void __iomem *lbam_addr; |
514 | void __iomem *lbah_addr; |
515 | void __iomem *device_addr; |
516 | void __iomem *status_addr; |
517 | void __iomem *command_addr; |
518 | void __iomem *altstatus_addr; |
519 | void __iomem *ctl_addr; |
520 | void __iomem *bmdma_addr; |
521 | void __iomem *scr_addr; |
522 | }; |
523 | #endif /* CONFIG_ATA_SFF */ |
524 | |
525 | struct ata_host { |
526 | spinlock_t lock; |
527 | struct device *dev; |
528 | void __iomem * const *iomap; |
529 | unsigned int n_ports; |
530 | void *private_data; |
531 | struct ata_port_operations *ops; |
532 | unsigned long flags; |
533 | #ifdef CONFIG_ATA_ACPI |
534 | acpi_handle acpi_handle; |
535 | #endif |
536 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
537 | struct ata_port *ports[0]; |
538 | }; |
539 | |
540 | struct ata_queued_cmd { |
541 | struct ata_port *ap; |
542 | struct ata_device *dev; |
543 | |
544 | struct scsi_cmnd *scsicmd; |
545 | void (*scsidone)(struct scsi_cmnd *); |
546 | |
547 | struct ata_taskfile tf; |
548 | u8 cdb[ATAPI_CDB_LEN]; |
549 | |
550 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
551 | unsigned int tag; |
552 | unsigned int n_elem; |
553 | unsigned int orig_n_elem; |
554 | |
555 | int dma_dir; |
556 | |
557 | unsigned int sect_size; |
558 | |
559 | unsigned int nbytes; |
560 | unsigned int extrabytes; |
561 | unsigned int curbytes; |
562 | |
563 | struct scatterlist *cursg; |
564 | unsigned int cursg_ofs; |
565 | |
566 | struct scatterlist sgent; |
567 | |
568 | struct scatterlist *sg; |
569 | |
570 | unsigned int err_mask; |
571 | struct ata_taskfile result_tf; |
572 | ata_qc_cb_t complete_fn; |
573 | |
574 | void *private_data; |
575 | void *lldd_task; |
576 | }; |
577 | |
578 | struct ata_port_stats { |
579 | unsigned long unhandled_irq; |
580 | unsigned long idle_irq; |
581 | unsigned long rw_reqbuf; |
582 | }; |
583 | |
584 | struct ata_ering_entry { |
585 | unsigned int eflags; |
586 | unsigned int err_mask; |
587 | u64 timestamp; |
588 | }; |
589 | |
590 | struct ata_ering { |
591 | int cursor; |
592 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
593 | }; |
594 | |
595 | struct ata_device { |
596 | struct ata_link *link; |
597 | unsigned int devno; /* 0 or 1 */ |
598 | unsigned int horkage; /* List of broken features */ |
599 | unsigned long flags; /* ATA_DFLAG_xxx */ |
600 | struct scsi_device *sdev; /* attached SCSI device */ |
601 | #ifdef CONFIG_ATA_ACPI |
602 | acpi_handle acpi_handle; |
603 | union acpi_object *gtf_cache; |
604 | unsigned int gtf_filter; |
605 | #endif |
606 | /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ |
607 | u64 n_sectors; /* size of device, if ATA */ |
608 | u64 n_native_sectors; /* native size, if ATA */ |
609 | unsigned int class; /* ATA_DEV_xxx */ |
610 | unsigned long unpark_deadline; |
611 | |
612 | u8 pio_mode; |
613 | u8 dma_mode; |
614 | u8 xfer_mode; |
615 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
616 | |
617 | unsigned int multi_count; /* sectors count for |
618 | READ/WRITE MULTIPLE */ |
619 | unsigned int max_sectors; /* per-device max sectors */ |
620 | unsigned int cdb_len; |
621 | |
622 | /* per-dev xfer mask */ |
623 | unsigned long pio_mask; |
624 | unsigned long mwdma_mask; |
625 | unsigned long udma_mask; |
626 | |
627 | /* for CHS addressing */ |
628 | u16 cylinders; /* Number of cylinders */ |
629 | u16 heads; /* Number of heads */ |
630 | u16 sectors; /* Number of sectors per track */ |
631 | |
632 | union { |
633 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
634 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ |
635 | }; |
636 | |
637 | /* error history */ |
638 | int spdn_cnt; |
639 | /* ering is CLEAR_END, read comment above CLEAR_END */ |
640 | struct ata_ering ering; |
641 | }; |
642 | |
643 | /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are |
644 | * cleared to zero on ata_dev_init(). |
645 | */ |
646 | #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) |
647 | #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) |
648 | |
649 | struct ata_eh_info { |
650 | struct ata_device *dev; /* offending device */ |
651 | u32 serror; /* SError from LLDD */ |
652 | unsigned int err_mask; /* port-wide err_mask */ |
653 | unsigned int action; /* ATA_EH_* action mask */ |
654 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
655 | unsigned int flags; /* ATA_EHI_* flags */ |
656 | |
657 | unsigned int probe_mask; |
658 | |
659 | char desc[ATA_EH_DESC_LEN]; |
660 | int desc_len; |
661 | }; |
662 | |
663 | struct ata_eh_context { |
664 | struct ata_eh_info i; |
665 | int tries[ATA_MAX_DEVICES]; |
666 | int cmd_timeout_idx[ATA_MAX_DEVICES] |
667 | [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; |
668 | unsigned int classes[ATA_MAX_DEVICES]; |
669 | unsigned int did_probe_mask; |
670 | unsigned int unloaded_mask; |
671 | unsigned int saved_ncq_enabled; |
672 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; |
673 | /* timestamp for the last reset attempt or success */ |
674 | unsigned long last_reset; |
675 | }; |
676 | |
677 | struct ata_acpi_drive |
678 | { |
679 | u32 pio; |
680 | u32 dma; |
681 | } __packed; |
682 | |
683 | struct ata_acpi_gtm { |
684 | struct ata_acpi_drive drive[2]; |
685 | u32 flags; |
686 | } __packed; |
687 | |
688 | struct ata_link { |
689 | struct ata_port *ap; |
690 | int pmp; /* port multiplier port # */ |
691 | |
692 | unsigned int active_tag; /* active tag on this link */ |
693 | u32 sactive; /* active NCQ commands */ |
694 | |
695 | unsigned int flags; /* ATA_LFLAG_xxx */ |
696 | |
697 | u32 saved_scontrol; /* SControl on probe */ |
698 | unsigned int hw_sata_spd_limit; |
699 | unsigned int sata_spd_limit; |
700 | unsigned int sata_spd; /* current SATA PHY speed */ |
701 | |
702 | /* record runtime error info, protected by host_set lock */ |
703 | struct ata_eh_info eh_info; |
704 | /* EH context */ |
705 | struct ata_eh_context eh_context; |
706 | |
707 | struct ata_device device[ATA_MAX_DEVICES]; |
708 | }; |
709 | |
710 | struct ata_port { |
711 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
712 | struct ata_port_operations *ops; |
713 | spinlock_t *lock; |
714 | /* Flags owned by the EH context. Only EH should touch these once the |
715 | port is active */ |
716 | unsigned long flags; /* ATA_FLAG_xxx */ |
717 | /* Flags that change dynamically, protected by ap->lock */ |
718 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
719 | unsigned int print_id; /* user visible unique port ID */ |
720 | unsigned int port_no; /* 0 based port no. inside the host */ |
721 | |
722 | struct ata_prd *prd; /* our SG list */ |
723 | dma_addr_t prd_dma; /* and its DMA mapping */ |
724 | |
725 | #ifdef CONFIG_ATA_SFF |
726 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
727 | #endif /* CONFIG_ATA_SFF */ |
728 | |
729 | u8 ctl; /* cache of ATA control register */ |
730 | u8 last_ctl; /* Cache last written value */ |
731 | unsigned int pio_mask; |
732 | unsigned int mwdma_mask; |
733 | unsigned int udma_mask; |
734 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
735 | |
736 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
737 | unsigned long qc_allocated; |
738 | unsigned int qc_active; |
739 | int nr_active_links; /* #links with active qcs */ |
740 | |
741 | struct ata_link link; /* host default link */ |
742 | struct ata_link *slave_link; /* see ata_slave_link_init() */ |
743 | |
744 | int nr_pmp_links; /* nr of available PMP links */ |
745 | struct ata_link *pmp_link; /* array of PMP links */ |
746 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
747 | |
748 | struct ata_port_stats stats; |
749 | struct ata_host *host; |
750 | struct device *dev; |
751 | |
752 | void *port_task_data; |
753 | struct delayed_work port_task; |
754 | struct delayed_work hotplug_task; |
755 | struct work_struct scsi_rescan_task; |
756 | |
757 | unsigned int hsm_task_state; |
758 | |
759 | u32 msg_enable; |
760 | struct list_head eh_done_q; |
761 | wait_queue_head_t eh_wait_q; |
762 | int eh_tries; |
763 | struct completion park_req_pending; |
764 | |
765 | pm_message_t pm_mesg; |
766 | int *pm_result; |
767 | enum link_pm pm_policy; |
768 | |
769 | struct timer_list fastdrain_timer; |
770 | unsigned long fastdrain_cnt; |
771 | |
772 | int em_message_type; |
773 | void *private_data; |
774 | |
775 | #ifdef CONFIG_ATA_ACPI |
776 | acpi_handle acpi_handle; |
777 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
778 | #endif |
779 | /* owned by EH */ |
780 | u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; |
781 | }; |
782 | |
783 | /* The following initializer overrides a method to NULL whether one of |
784 | * its parent has the method defined or not. This is equivalent to |
785 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant |
786 | * expression and thus can't be used as an initializer. |
787 | */ |
788 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) |
789 | |
790 | struct ata_port_operations { |
791 | /* |
792 | * Command execution |
793 | */ |
794 | int (*qc_defer)(struct ata_queued_cmd *qc); |
795 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); |
796 | void (*qc_prep)(struct ata_queued_cmd *qc); |
797 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); |
798 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
799 | |
800 | /* |
801 | * Configuration and exception handling |
802 | */ |
803 | int (*cable_detect)(struct ata_port *ap); |
804 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); |
805 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); |
806 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); |
807 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); |
808 | unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
809 | |
810 | void (*dev_config)(struct ata_device *dev); |
811 | |
812 | void (*freeze)(struct ata_port *ap); |
813 | void (*thaw)(struct ata_port *ap); |
814 | ata_prereset_fn_t prereset; |
815 | ata_reset_fn_t softreset; |
816 | ata_reset_fn_t hardreset; |
817 | ata_postreset_fn_t postreset; |
818 | ata_prereset_fn_t pmp_prereset; |
819 | ata_reset_fn_t pmp_softreset; |
820 | ata_reset_fn_t pmp_hardreset; |
821 | ata_postreset_fn_t pmp_postreset; |
822 | void (*error_handler)(struct ata_port *ap); |
823 | void (*lost_interrupt)(struct ata_port *ap); |
824 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
825 | |
826 | /* |
827 | * Optional features |
828 | */ |
829 | int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
830 | int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); |
831 | void (*pmp_attach)(struct ata_port *ap); |
832 | void (*pmp_detach)(struct ata_port *ap); |
833 | int (*enable_pm)(struct ata_port *ap, enum link_pm policy); |
834 | void (*disable_pm)(struct ata_port *ap); |
835 | |
836 | /* |
837 | * Start, stop, suspend and resume |
838 | */ |
839 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); |
840 | int (*port_resume)(struct ata_port *ap); |
841 | int (*port_start)(struct ata_port *ap); |
842 | void (*port_stop)(struct ata_port *ap); |
843 | void (*host_stop)(struct ata_host *host); |
844 | |
845 | #ifdef CONFIG_ATA_SFF |
846 | /* |
847 | * SFF / taskfile oriented ops |
848 | */ |
849 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
850 | u8 (*sff_check_status)(struct ata_port *ap); |
851 | u8 (*sff_check_altstatus)(struct ata_port *ap); |
852 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); |
853 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); |
854 | void (*sff_exec_command)(struct ata_port *ap, |
855 | const struct ata_taskfile *tf); |
856 | unsigned int (*sff_data_xfer)(struct ata_device *dev, |
857 | unsigned char *buf, unsigned int buflen, int rw); |
858 | u8 (*sff_irq_on)(struct ata_port *); |
859 | void (*sff_irq_clear)(struct ata_port *); |
860 | |
861 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
862 | void (*bmdma_start)(struct ata_queued_cmd *qc); |
863 | void (*bmdma_stop)(struct ata_queued_cmd *qc); |
864 | u8 (*bmdma_status)(struct ata_port *ap); |
865 | |
866 | void (*drain_fifo)(struct ata_queued_cmd *qc); |
867 | #endif /* CONFIG_ATA_SFF */ |
868 | |
869 | ssize_t (*em_show)(struct ata_port *ap, char *buf); |
870 | ssize_t (*em_store)(struct ata_port *ap, const char *message, |
871 | size_t size); |
872 | ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); |
873 | ssize_t (*sw_activity_store)(struct ata_device *dev, |
874 | enum sw_activity val); |
875 | /* |
876 | * Obsolete |
877 | */ |
878 | void (*phy_reset)(struct ata_port *ap); |
879 | void (*eng_timeout)(struct ata_port *ap); |
880 | |
881 | /* |
882 | * ->inherits must be the last field and all the preceding |
883 | * fields must be pointers. |
884 | */ |
885 | const struct ata_port_operations *inherits; |
886 | }; |
887 | |
888 | struct ata_port_info { |
889 | unsigned long flags; |
890 | unsigned long link_flags; |
891 | unsigned long pio_mask; |
892 | unsigned long mwdma_mask; |
893 | unsigned long udma_mask; |
894 | struct ata_port_operations *port_ops; |
895 | void *private_data; |
896 | }; |
897 | |
898 | struct ata_timing { |
899 | unsigned short mode; /* ATA mode */ |
900 | unsigned short setup; /* t1 */ |
901 | unsigned short act8b; /* t2 for 8-bit I/O */ |
902 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
903 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
904 | unsigned short active; /* t2 or tD */ |
905 | unsigned short recover; /* t2i or tK */ |
906 | unsigned short dmack_hold; /* tj */ |
907 | unsigned short cycle; /* t0 */ |
908 | unsigned short udma; /* t2CYCTYP/2 */ |
909 | }; |
910 | |
911 | /* |
912 | * Core layer - drivers/ata/libata-core.c |
913 | */ |
914 | extern const unsigned long sata_deb_timing_normal[]; |
915 | extern const unsigned long sata_deb_timing_hotplug[]; |
916 | extern const unsigned long sata_deb_timing_long[]; |
917 | |
918 | extern struct ata_port_operations ata_dummy_port_ops; |
919 | extern const struct ata_port_info ata_dummy_port_info; |
920 | |
921 | static inline const unsigned long * |
922 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
923 | { |
924 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
925 | return sata_deb_timing_hotplug; |
926 | else |
927 | return sata_deb_timing_normal; |
928 | } |
929 | |
930 | static inline int ata_port_is_dummy(struct ata_port *ap) |
931 | { |
932 | return ap->ops == &ata_dummy_port_ops; |
933 | } |
934 | |
935 | extern void ata_port_probe(struct ata_port *); |
936 | extern int sata_set_spd(struct ata_link *link); |
937 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
938 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
939 | int (*check_ready)(struct ata_link *link)); |
940 | extern int sata_link_debounce(struct ata_link *link, |
941 | const unsigned long *params, unsigned long deadline); |
942 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, |
943 | unsigned long deadline); |
944 | extern int sata_link_hardreset(struct ata_link *link, |
945 | const unsigned long *timing, unsigned long deadline, |
946 | bool *online, int (*check_ready)(struct ata_link *)); |
947 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
948 | unsigned long deadline); |
949 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
950 | extern void ata_port_disable(struct ata_port *); |
951 | |
952 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
953 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
954 | const struct ata_port_info * const * ppi, int n_ports); |
955 | extern int ata_slave_link_init(struct ata_port *ap); |
956 | extern int ata_host_start(struct ata_host *host); |
957 | extern int ata_host_register(struct ata_host *host, |
958 | struct scsi_host_template *sht); |
959 | extern int ata_host_activate(struct ata_host *host, int irq, |
960 | irq_handler_t irq_handler, unsigned long irq_flags, |
961 | struct scsi_host_template *sht); |
962 | extern void ata_host_detach(struct ata_host *host); |
963 | extern void ata_host_init(struct ata_host *, struct device *, |
964 | unsigned long, struct ata_port_operations *); |
965 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
966 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
967 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); |
968 | extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
969 | int cmd, void __user *arg); |
970 | extern void ata_sas_port_destroy(struct ata_port *); |
971 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
972 | struct ata_port_info *, struct Scsi_Host *); |
973 | extern int ata_sas_port_init(struct ata_port *); |
974 | extern int ata_sas_port_start(struct ata_port *ap); |
975 | extern void ata_sas_port_stop(struct ata_port *ap); |
976 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); |
977 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
978 | struct ata_port *ap); |
979 | extern int sata_scr_valid(struct ata_link *link); |
980 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); |
981 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); |
982 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); |
983 | extern bool ata_link_online(struct ata_link *link); |
984 | extern bool ata_link_offline(struct ata_link *link); |
985 | #ifdef CONFIG_PM |
986 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
987 | extern void ata_host_resume(struct ata_host *host); |
988 | #endif |
989 | extern int ata_ratelimit(void); |
990 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
991 | unsigned long interval, unsigned long timeout); |
992 | extern int atapi_cmd_type(u8 opcode); |
993 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
994 | u8 pmp, int is_cmd, u8 *fis); |
995 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
996 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
997 | unsigned long mwdma_mask, unsigned long udma_mask); |
998 | extern void ata_unpack_xfermask(unsigned long xfer_mask, |
999 | unsigned long *pio_mask, unsigned long *mwdma_mask, |
1000 | unsigned long *udma_mask); |
1001 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); |
1002 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); |
1003 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); |
1004 | extern const char *ata_mode_string(unsigned long xfer_mask); |
1005 | extern unsigned long ata_id_xfermask(const u16 *id); |
1006 | extern int ata_port_start(struct ata_port *ap); |
1007 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
1008 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1009 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
1010 | unsigned int n_elem); |
1011 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
1012 | extern void ata_dev_disable(struct ata_device *adev); |
1013 | extern void ata_id_string(const u16 *id, unsigned char *s, |
1014 | unsigned int ofs, unsigned int len); |
1015 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
1016 | unsigned int ofs, unsigned int len); |
1017 | extern unsigned int ata_do_dev_read_id(struct ata_device *dev, |
1018 | struct ata_taskfile *tf, u16 *id); |
1019 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
1020 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
1021 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1022 | void (*done)(struct scsi_cmnd *)); |
1023 | extern int ata_std_bios_param(struct scsi_device *sdev, |
1024 | struct block_device *bdev, |
1025 | sector_t capacity, int geom[]); |
1026 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
1027 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
1028 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
1029 | int queue_depth); |
1030 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
1031 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
1032 | |
1033 | extern int ata_cable_40wire(struct ata_port *ap); |
1034 | extern int ata_cable_80wire(struct ata_port *ap); |
1035 | extern int ata_cable_sata(struct ata_port *ap); |
1036 | extern int ata_cable_ignore(struct ata_port *ap); |
1037 | extern int ata_cable_unknown(struct ata_port *ap); |
1038 | |
1039 | extern void ata_pio_queue_task(struct ata_port *ap, void *data, |
1040 | unsigned long delay); |
1041 | |
1042 | /* Timing helpers */ |
1043 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
1044 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
1045 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
1046 | struct ata_timing *, int, int); |
1047 | extern void ata_timing_merge(const struct ata_timing *, |
1048 | const struct ata_timing *, struct ata_timing *, |
1049 | unsigned int); |
1050 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
1051 | |
1052 | /* PCI */ |
1053 | #ifdef CONFIG_PCI |
1054 | struct pci_dev; |
1055 | |
1056 | struct pci_bits { |
1057 | unsigned int reg; /* PCI config register to read */ |
1058 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
1059 | unsigned long mask; |
1060 | unsigned long val; |
1061 | }; |
1062 | |
1063 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
1064 | extern void ata_pci_remove_one(struct pci_dev *pdev); |
1065 | |
1066 | #ifdef CONFIG_PM |
1067 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
1068 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
1069 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
1070 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
1071 | #endif /* CONFIG_PM */ |
1072 | #endif /* CONFIG_PCI */ |
1073 | |
1074 | /* |
1075 | * ACPI - drivers/ata/libata-acpi.c |
1076 | */ |
1077 | #ifdef CONFIG_ATA_ACPI |
1078 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1079 | { |
1080 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) |
1081 | return &ap->__acpi_init_gtm; |
1082 | return NULL; |
1083 | } |
1084 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
1085 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); |
1086 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
1087 | const struct ata_acpi_gtm *gtm); |
1088 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
1089 | #else |
1090 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1091 | { |
1092 | return NULL; |
1093 | } |
1094 | |
1095 | static inline int ata_acpi_stm(const struct ata_port *ap, |
1096 | struct ata_acpi_gtm *stm) |
1097 | { |
1098 | return -ENOSYS; |
1099 | } |
1100 | |
1101 | static inline int ata_acpi_gtm(const struct ata_port *ap, |
1102 | struct ata_acpi_gtm *stm) |
1103 | { |
1104 | return -ENOSYS; |
1105 | } |
1106 | |
1107 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, |
1108 | const struct ata_acpi_gtm *gtm) |
1109 | { |
1110 | return 0; |
1111 | } |
1112 | |
1113 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, |
1114 | const struct ata_acpi_gtm *gtm) |
1115 | { |
1116 | return 0; |
1117 | } |
1118 | #endif |
1119 | |
1120 | /* |
1121 | * EH - drivers/ata/libata-eh.c |
1122 | */ |
1123 | extern void ata_port_schedule_eh(struct ata_port *ap); |
1124 | extern int ata_link_abort(struct ata_link *link); |
1125 | extern int ata_port_abort(struct ata_port *ap); |
1126 | extern int ata_port_freeze(struct ata_port *ap); |
1127 | extern int sata_async_notification(struct ata_port *ap); |
1128 | |
1129 | extern void ata_eh_freeze_port(struct ata_port *ap); |
1130 | extern void ata_eh_thaw_port(struct ata_port *ap); |
1131 | |
1132 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1133 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
1134 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
1135 | |
1136 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1137 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
1138 | ata_postreset_fn_t postreset); |
1139 | extern void ata_std_error_handler(struct ata_port *ap); |
1140 | |
1141 | /* |
1142 | * Base operations to inherit from and initializers for sht |
1143 | * |
1144 | * Operations |
1145 | * |
1146 | * base : Common to all libata drivers. |
1147 | * sata : SATA controllers w/ native interface. |
1148 | * pmp : SATA controllers w/ PMP support. |
1149 | * sff : SFF ATA controllers w/o BMDMA support. |
1150 | * bmdma : SFF ATA controllers w/ BMDMA support. |
1151 | * |
1152 | * sht initializers |
1153 | * |
1154 | * BASE : Common to all libata drivers. The user must set |
1155 | * sg_tablesize and dma_boundary. |
1156 | * PIO : SFF ATA controllers w/ only PIO support. |
1157 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and |
1158 | * dma_boundary are set to BMDMA limits. |
1159 | * NCQ : SATA controllers supporting NCQ. The user must set |
1160 | * sg_tablesize, dma_boundary and can_queue. |
1161 | */ |
1162 | extern const struct ata_port_operations ata_base_port_ops; |
1163 | extern const struct ata_port_operations sata_port_ops; |
1164 | extern struct device_attribute *ata_common_sdev_attrs[]; |
1165 | |
1166 | #define ATA_BASE_SHT(drv_name) \ |
1167 | .module = THIS_MODULE, \ |
1168 | .name = drv_name, \ |
1169 | .ioctl = ata_scsi_ioctl, \ |
1170 | .queuecommand = ata_scsi_queuecmd, \ |
1171 | .can_queue = ATA_DEF_QUEUE, \ |
1172 | .this_id = ATA_SHT_THIS_ID, \ |
1173 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ |
1174 | .emulated = ATA_SHT_EMULATED, \ |
1175 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ |
1176 | .proc_name = drv_name, \ |
1177 | .slave_configure = ata_scsi_slave_config, \ |
1178 | .slave_destroy = ata_scsi_slave_destroy, \ |
1179 | .bios_param = ata_std_bios_param, \ |
1180 | .sdev_attrs = ata_common_sdev_attrs |
1181 | |
1182 | #define ATA_NCQ_SHT(drv_name) \ |
1183 | ATA_BASE_SHT(drv_name), \ |
1184 | .change_queue_depth = ata_scsi_change_queue_depth |
1185 | |
1186 | /* |
1187 | * PMP helpers |
1188 | */ |
1189 | #ifdef CONFIG_SATA_PMP |
1190 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1191 | { |
1192 | return ap->flags & ATA_FLAG_PMP; |
1193 | } |
1194 | |
1195 | static inline bool sata_pmp_attached(struct ata_port *ap) |
1196 | { |
1197 | return ap->nr_pmp_links != 0; |
1198 | } |
1199 | |
1200 | static inline int ata_is_host_link(const struct ata_link *link) |
1201 | { |
1202 | return link == &link->ap->link || link == link->ap->slave_link; |
1203 | } |
1204 | #else /* CONFIG_SATA_PMP */ |
1205 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1206 | { |
1207 | return false; |
1208 | } |
1209 | |
1210 | static inline bool sata_pmp_attached(struct ata_port *ap) |
1211 | { |
1212 | return false; |
1213 | } |
1214 | |
1215 | static inline int ata_is_host_link(const struct ata_link *link) |
1216 | { |
1217 | return 1; |
1218 | } |
1219 | #endif /* CONFIG_SATA_PMP */ |
1220 | |
1221 | static inline int sata_srst_pmp(struct ata_link *link) |
1222 | { |
1223 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) |
1224 | return SATA_PMP_CTRL_PORT; |
1225 | return link->pmp; |
1226 | } |
1227 | |
1228 | /* |
1229 | * printk helpers |
1230 | */ |
1231 | #define ata_port_printk(ap, lv, fmt, args...) \ |
1232 | printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) |
1233 | |
1234 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
1235 | if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ |
1236 | printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ |
1237 | (link)->pmp , ##args); \ |
1238 | else \ |
1239 | printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ |
1240 | } while(0) |
1241 | |
1242 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
1243 | printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ |
1244 | (dev)->link->pmp + (dev)->devno , ##args) |
1245 | |
1246 | /* |
1247 | * ata_eh_info helpers |
1248 | */ |
1249 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1250 | __attribute__ ((format (printf, 2, 3))); |
1251 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1252 | __attribute__ ((format (printf, 2, 3))); |
1253 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
1254 | |
1255 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1256 | { |
1257 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
1258 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
1259 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
1260 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1261 | } |
1262 | |
1263 | /* |
1264 | * port description helpers |
1265 | */ |
1266 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) |
1267 | __attribute__ ((format (printf, 2, 3))); |
1268 | #ifdef CONFIG_PCI |
1269 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, |
1270 | const char *name); |
1271 | #endif |
1272 | |
1273 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1274 | { |
1275 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
1276 | } |
1277 | |
1278 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1279 | { |
1280 | return tag == ATA_TAG_INTERNAL; |
1281 | } |
1282 | |
1283 | /* |
1284 | * device helpers |
1285 | */ |
1286 | static inline unsigned int ata_class_enabled(unsigned int class) |
1287 | { |
1288 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1289 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; |
1290 | } |
1291 | |
1292 | static inline unsigned int ata_class_disabled(unsigned int class) |
1293 | { |
1294 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1295 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; |
1296 | } |
1297 | |
1298 | static inline unsigned int ata_class_absent(unsigned int class) |
1299 | { |
1300 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
1301 | } |
1302 | |
1303 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1304 | { |
1305 | return ata_class_enabled(dev->class); |
1306 | } |
1307 | |
1308 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
1309 | { |
1310 | return ata_class_disabled(dev->class); |
1311 | } |
1312 | |
1313 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1314 | { |
1315 | return ata_class_absent(dev->class); |
1316 | } |
1317 | |
1318 | /* |
1319 | * link helpers |
1320 | */ |
1321 | static inline int ata_link_max_devices(const struct ata_link *link) |
1322 | { |
1323 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
1324 | return 2; |
1325 | return 1; |
1326 | } |
1327 | |
1328 | static inline int ata_link_active(struct ata_link *link) |
1329 | { |
1330 | return ata_tag_valid(link->active_tag) || link->sactive; |
1331 | } |
1332 | |
1333 | /* |
1334 | * Iterators |
1335 | * |
1336 | * ATA_LITER_* constants are used to select link iteration mode and |
1337 | * ATA_DITER_* device iteration mode. |
1338 | * |
1339 | * For a custom iteration directly using ata_{link|dev}_next(), if |
1340 | * @link or @dev, respectively, is NULL, the first element is |
1341 | * returned. @dev and @link can be any valid device or link and the |
1342 | * next element according to the iteration mode will be returned. |
1343 | * After the last element, NULL is returned. |
1344 | */ |
1345 | enum ata_link_iter_mode { |
1346 | ATA_LITER_EDGE, /* if present, PMP links only; otherwise, |
1347 | * host link. no slave link */ |
1348 | ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ |
1349 | ATA_LITER_PMP_FIRST, /* PMP links followed by host link, |
1350 | * slave link still comes after host link */ |
1351 | }; |
1352 | |
1353 | enum ata_dev_iter_mode { |
1354 | ATA_DITER_ENABLED, |
1355 | ATA_DITER_ENABLED_REVERSE, |
1356 | ATA_DITER_ALL, |
1357 | ATA_DITER_ALL_REVERSE, |
1358 | }; |
1359 | |
1360 | extern struct ata_link *ata_link_next(struct ata_link *link, |
1361 | struct ata_port *ap, |
1362 | enum ata_link_iter_mode mode); |
1363 | |
1364 | extern struct ata_device *ata_dev_next(struct ata_device *dev, |
1365 | struct ata_link *link, |
1366 | enum ata_dev_iter_mode mode); |
1367 | |
1368 | /* |
1369 | * Shortcut notation for iterations |
1370 | * |
1371 | * ata_for_each_link() iterates over each link of @ap according to |
1372 | * @mode. @link points to the current link in the loop. @link is |
1373 | * NULL after loop termination. ata_for_each_dev() works the same way |
1374 | * except that it iterates over each device of @link. |
1375 | * |
1376 | * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be |
1377 | * specified when using the following shorthand notations. Only the |
1378 | * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be |
1379 | * specified. This not only increases brevity but also makes it |
1380 | * impossible to use ATA_LITER_* for device iteration or vice-versa. |
1381 | */ |
1382 | #define ata_for_each_link(link, ap, mode) \ |
1383 | for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ |
1384 | (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) |
1385 | |
1386 | #define ata_for_each_dev(dev, link, mode) \ |
1387 | for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ |
1388 | (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) |
1389 | |
1390 | /** |
1391 | * ata_ncq_enabled - Test whether NCQ is enabled |
1392 | * @dev: ATA device to test for |
1393 | * |
1394 | * LOCKING: |
1395 | * spin_lock_irqsave(host lock) |
1396 | * |
1397 | * RETURNS: |
1398 | * 1 if NCQ is enabled for @dev, 0 otherwise. |
1399 | */ |
1400 | static inline int ata_ncq_enabled(struct ata_device *dev) |
1401 | { |
1402 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
1403 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
1404 | } |
1405 | |
1406 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1407 | { |
1408 | qc->tf.ctl |= ATA_NIEN; |
1409 | } |
1410 | |
1411 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1412 | unsigned int tag) |
1413 | { |
1414 | if (likely(ata_tag_valid(tag))) |
1415 | return &ap->qcmd[tag]; |
1416 | return NULL; |
1417 | } |
1418 | |
1419 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1420 | unsigned int tag) |
1421 | { |
1422 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); |
1423 | |
1424 | if (unlikely(!qc) || !ap->ops->error_handler) |
1425 | return qc; |
1426 | |
1427 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | |
1428 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) |
1429 | return qc; |
1430 | |
1431 | return NULL; |
1432 | } |
1433 | |
1434 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1435 | { |
1436 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); |
1437 | } |
1438 | |
1439 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1440 | { |
1441 | memset(tf, 0, sizeof(*tf)); |
1442 | |
1443 | tf->ctl = dev->link->ap->ctl; |
1444 | if (dev->devno == 0) |
1445 | tf->device = ATA_DEVICE_OBS; |
1446 | else |
1447 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
1448 | } |
1449 | |
1450 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1451 | { |
1452 | qc->dma_dir = DMA_NONE; |
1453 | qc->sg = NULL; |
1454 | qc->flags = 0; |
1455 | qc->cursg = NULL; |
1456 | qc->cursg_ofs = 0; |
1457 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
1458 | qc->n_elem = 0; |
1459 | qc->err_mask = 0; |
1460 | qc->sect_size = ATA_SECT_SIZE; |
1461 | |
1462 | ata_tf_init(qc->dev, &qc->tf); |
1463 | |
1464 | /* init result_tf such that it indicates normal completion */ |
1465 | qc->result_tf.command = ATA_DRDY; |
1466 | qc->result_tf.feature = 0; |
1467 | } |
1468 | |
1469 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1470 | { |
1471 | return ata_id_wcache_enabled(dev->id) || |
1472 | ata_id_has_flush(dev->id) || |
1473 | ata_id_has_flush_ext(dev->id); |
1474 | } |
1475 | |
1476 | static inline unsigned int ac_err_mask(u8 status) |
1477 | { |
1478 | if (status & (ATA_BUSY | ATA_DRQ)) |
1479 | return AC_ERR_HSM; |
1480 | if (status & (ATA_ERR | ATA_DF)) |
1481 | return AC_ERR_DEV; |
1482 | return 0; |
1483 | } |
1484 | |
1485 | static inline unsigned int __ac_err_mask(u8 status) |
1486 | { |
1487 | unsigned int mask = ac_err_mask(status); |
1488 | if (mask == 0) |
1489 | return AC_ERR_OTHER; |
1490 | return mask; |
1491 | } |
1492 | |
1493 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1494 | { |
1495 | return *(struct ata_port **)&host->hostdata[0]; |
1496 | } |
1497 | |
1498 | static inline int ata_check_ready(u8 status) |
1499 | { |
1500 | if (!(status & ATA_BUSY)) |
1501 | return 1; |
1502 | |
1503 | /* 0xff indicates either no device or device not ready */ |
1504 | if (status == 0xff) |
1505 | return -ENODEV; |
1506 | |
1507 | return 0; |
1508 | } |
1509 | |
1510 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
1511 | unsigned long timeout_msecs) |
1512 | { |
1513 | return from_jiffies + msecs_to_jiffies(timeout_msecs); |
1514 | } |
1515 | |
1516 | /* Don't open code these in drivers as there are traps. Firstly the range may |
1517 | change in future hardware and specs, secondly 0xFF means 'no DMA' but is |
1518 | > UDMA_0. Dyma ddreigiau */ |
1519 | |
1520 | static inline int ata_using_mwdma(struct ata_device *adev) |
1521 | { |
1522 | if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) |
1523 | return 1; |
1524 | return 0; |
1525 | } |
1526 | |
1527 | static inline int ata_using_udma(struct ata_device *adev) |
1528 | { |
1529 | if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) |
1530 | return 1; |
1531 | return 0; |
1532 | } |
1533 | |
1534 | static inline int ata_dma_enabled(struct ata_device *adev) |
1535 | { |
1536 | return (adev->dma_mode == 0xFF ? 0 : 1); |
1537 | } |
1538 | |
1539 | /************************************************************************** |
1540 | * PMP - drivers/ata/libata-pmp.c |
1541 | */ |
1542 | #ifdef CONFIG_SATA_PMP |
1543 | |
1544 | extern const struct ata_port_operations sata_pmp_port_ops; |
1545 | |
1546 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
1547 | extern void sata_pmp_error_handler(struct ata_port *ap); |
1548 | |
1549 | #else /* CONFIG_SATA_PMP */ |
1550 | |
1551 | #define sata_pmp_port_ops sata_port_ops |
1552 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer |
1553 | #define sata_pmp_error_handler ata_std_error_handler |
1554 | |
1555 | #endif /* CONFIG_SATA_PMP */ |
1556 | |
1557 | |
1558 | /************************************************************************** |
1559 | * SFF - drivers/ata/libata-sff.c |
1560 | */ |
1561 | #ifdef CONFIG_ATA_SFF |
1562 | |
1563 | extern const struct ata_port_operations ata_sff_port_ops; |
1564 | extern const struct ata_port_operations ata_bmdma_port_ops; |
1565 | extern const struct ata_port_operations ata_bmdma32_port_ops; |
1566 | |
1567 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ |
1568 | #define ATA_PIO_SHT(drv_name) \ |
1569 | ATA_BASE_SHT(drv_name), \ |
1570 | .sg_tablesize = LIBATA_MAX_PRD, \ |
1571 | .dma_boundary = ATA_DMA_BOUNDARY |
1572 | |
1573 | #define ATA_BMDMA_SHT(drv_name) \ |
1574 | ATA_BASE_SHT(drv_name), \ |
1575 | .sg_tablesize = LIBATA_MAX_PRD, \ |
1576 | .dma_boundary = ATA_DMA_BOUNDARY |
1577 | |
1578 | extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); |
1579 | extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); |
1580 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
1581 | extern u8 ata_sff_check_status(struct ata_port *ap); |
1582 | extern void ata_sff_pause(struct ata_port *ap); |
1583 | extern void ata_sff_dma_pause(struct ata_port *ap); |
1584 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
1585 | unsigned long timeout_pat, unsigned long timeout); |
1586 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
1587 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1588 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
1589 | extern void ata_sff_exec_command(struct ata_port *ap, |
1590 | const struct ata_taskfile *tf); |
1591 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, |
1592 | unsigned char *buf, unsigned int buflen, int rw); |
1593 | extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, |
1594 | unsigned char *buf, unsigned int buflen, int rw); |
1595 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
1596 | unsigned char *buf, unsigned int buflen, int rw); |
1597 | extern u8 ata_sff_irq_on(struct ata_port *ap); |
1598 | extern void ata_sff_irq_clear(struct ata_port *ap); |
1599 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
1600 | u8 status, int in_wq); |
1601 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); |
1602 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
1603 | extern unsigned int ata_sff_host_intr(struct ata_port *ap, |
1604 | struct ata_queued_cmd *qc); |
1605 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); |
1606 | extern void ata_sff_lost_interrupt(struct ata_port *ap); |
1607 | extern void ata_sff_freeze(struct ata_port *ap); |
1608 | extern void ata_sff_thaw(struct ata_port *ap); |
1609 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); |
1610 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, |
1611 | u8 *r_err); |
1612 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
1613 | unsigned long deadline); |
1614 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
1615 | unsigned long deadline); |
1616 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1617 | unsigned long deadline); |
1618 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); |
1619 | extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); |
1620 | extern void ata_sff_error_handler(struct ata_port *ap); |
1621 | extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); |
1622 | extern int ata_sff_port_start(struct ata_port *ap); |
1623 | extern int ata_sff_port_start32(struct ata_port *ap); |
1624 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
1625 | extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, |
1626 | unsigned long xfer_mask); |
1627 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1628 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); |
1629 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
1630 | extern u8 ata_bmdma_status(struct ata_port *ap); |
1631 | extern void ata_bus_reset(struct ata_port *ap); |
1632 | |
1633 | #ifdef CONFIG_PCI |
1634 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
1635 | extern int ata_pci_bmdma_init(struct ata_host *host); |
1636 | extern int ata_pci_sff_init_host(struct ata_host *host); |
1637 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, |
1638 | const struct ata_port_info * const * ppi, |
1639 | struct ata_host **r_host); |
1640 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
1641 | irq_handler_t irq_handler, |
1642 | struct scsi_host_template *sht); |
1643 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
1644 | const struct ata_port_info * const * ppi, |
1645 | struct scsi_host_template *sht, void *host_priv); |
1646 | #endif /* CONFIG_PCI */ |
1647 | |
1648 | /** |
1649 | * ata_sff_busy_wait - Wait for a port status register |
1650 | * @ap: Port to wait for. |
1651 | * @bits: bits that must be clear |
1652 | * @max: number of 10uS waits to perform |
1653 | * |
1654 | * Waits up to max*10 microseconds for the selected bits in the port's |
1655 | * status register to be cleared. |
1656 | * Returns final value of status register. |
1657 | * |
1658 | * LOCKING: |
1659 | * Inherited from caller. |
1660 | */ |
1661 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1662 | unsigned int max) |
1663 | { |
1664 | u8 status; |
1665 | |
1666 | do { |
1667 | udelay(10); |
1668 | status = ap->ops->sff_check_status(ap); |
1669 | max--; |
1670 | } while (status != 0xff && (status & bits) && (max > 0)); |
1671 | |
1672 | return status; |
1673 | } |
1674 | |
1675 | /** |
1676 | * ata_wait_idle - Wait for a port to be idle. |
1677 | * @ap: Port to wait for. |
1678 | * |
1679 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
1680 | * Returns final value of status register. |
1681 | * |
1682 | * LOCKING: |
1683 | * Inherited from caller. |
1684 | */ |
1685 | static inline u8 ata_wait_idle(struct ata_port *ap) |
1686 | { |
1687 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
1688 | |
1689 | #ifdef ATA_DEBUG |
1690 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
1691 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
1692 | status); |
1693 | #endif |
1694 | |
1695 | return status; |
1696 | } |
1697 | #endif /* CONFIG_ATA_SFF */ |
1698 | |
1699 | #endif /* __LINUX_LIBATA_H__ */ |
1700 |
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