Commit | Line | Data |
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1da177e4 | 1 | /* |
af36d7f0 JG |
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 | * | |
1da177e4 LT |
24 | */ |
25 | ||
26 | #ifndef __LINUX_LIBATA_H__ | |
27 | #define __LINUX_LIBATA_H__ | |
28 | ||
29 | #include <linux/delay.h> | |
30 | #include <linux/interrupt.h> | |
1c72d8d9 | 31 | #include <linux/dma-mapping.h> |
87260216 | 32 | #include <linux/scatterlist.h> |
f0d36efd | 33 | #include <linux/io.h> |
1da177e4 LT |
34 | #include <linux/ata.h> |
35 | #include <linux/workqueue.h> | |
35bb94b1 | 36 | #include <scsi/scsi_host.h> |
11ef697b | 37 | #include <linux/acpi.h> |
1da177e4 | 38 | |
a6d967a4 JG |
39 | /* |
40 | * Define if arch has non-standard setup. This is a _PCI_ standard | |
41 | * not a legacy or ISA standard. | |
42 | */ | |
43 | #ifdef CONFIG_ATA_NONSTANDARD | |
2ec7df04 | 44 | #include <asm/libata-portmap.h> |
a6d967a4 JG |
45 | #else |
46 | #include <asm-generic/libata-portmap.h> | |
47 | #endif | |
2ec7df04 | 48 | |
1da177e4 | 49 | /* |
bfd60579 RD |
50 | * compile-time options: to be removed as soon as all the drivers are |
51 | * converted to the new debugging mechanism | |
1da177e4 LT |
52 | */ |
53 | #undef ATA_DEBUG /* debugging output */ | |
54 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
55 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
56 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
57 | |
58 | ||
59 | /* note: prints function name for you */ | |
60 | #ifdef ATA_DEBUG | |
61 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
62 | #ifdef ATA_VERBOSE_DEBUG | |
63 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
64 | #else | |
65 | #define VPRINTK(fmt, args...) | |
66 | #endif /* ATA_VERBOSE_DEBUG */ | |
67 | #else | |
68 | #define DPRINTK(fmt, args...) | |
69 | #define VPRINTK(fmt, args...) | |
70 | #endif /* ATA_DEBUG */ | |
71 | ||
2c13b7ce JG |
72 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
73 | ||
bfd60579 RD |
74 | /* NEW: debug levels */ |
75 | #define HAVE_LIBATA_MSG 1 | |
76 | ||
77 | enum { | |
78 | ATA_MSG_DRV = 0x0001, | |
79 | ATA_MSG_INFO = 0x0002, | |
80 | ATA_MSG_PROBE = 0x0004, | |
81 | ATA_MSG_WARN = 0x0008, | |
82 | ATA_MSG_MALLOC = 0x0010, | |
83 | ATA_MSG_CTL = 0x0020, | |
84 | ATA_MSG_INTR = 0x0040, | |
85 | ATA_MSG_ERR = 0x0080, | |
86 | }; | |
87 | ||
88 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
89 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
90 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
91 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
92 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
93 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
94 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
95 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
96 | ||
97 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
98 | { | |
99 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
100 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
101 | if (!dval) | |
102 | return 0; | |
103 | return (1 << dval) - 1; | |
104 | } | |
105 | ||
1da177e4 LT |
106 | /* defines only for the constants which don't work well as enums */ |
107 | #define ATA_TAG_POISON 0xfafbfcfdU | |
108 | ||
1da177e4 LT |
109 | enum { |
110 | /* various global constants */ | |
111 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 112 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 LT |
113 | ATA_MAX_PORTS = 8, |
114 | ATA_DEF_QUEUE = 1, | |
2ab7db1f | 115 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
a6e6ce8e | 116 | ATA_MAX_QUEUE = 32, |
2ab7db1f | 117 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
1da177e4 LT |
118 | ATA_MAX_BUS = 2, |
119 | ATA_DEF_BUSY_WAIT = 10000, | |
120 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, | |
121 | ||
122 | ATA_SHT_EMULATED = 1, | |
123 | ATA_SHT_CMD_PER_LUN = 1, | |
124 | ATA_SHT_THIS_ID = -1, | |
cf482935 | 125 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 LT |
126 | |
127 | /* struct ata_device stuff */ | |
949b38af TH |
128 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
129 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 130 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 131 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 132 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
133 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
134 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 135 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
2557164e | 136 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 137 | |
2557164e KCA |
138 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
139 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
140 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ | |
72fa4b74 | 141 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
1da177e4 | 142 | |
abdda733 TH |
143 | ATA_DFLAG_DETACH = (1 << 16), |
144 | ATA_DFLAG_DETACHED = (1 << 17), | |
145 | ||
1da177e4 LT |
146 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
147 | ATA_DEV_ATA = 1, /* ATA device */ | |
148 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
149 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
150 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
151 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
152 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
153 | ATA_DEV_SEMB = 7, /* SEMB */ | |
154 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
155 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 156 | |
0c88758b TH |
157 | /* struct ata_link flags */ |
158 | ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */ | |
159 | ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H | |
160 | * Register FIS clearing BSY */ | |
ae791c05 TH |
161 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
162 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
163 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
164 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 165 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 166 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
0c88758b | 167 | |
1da177e4 | 168 | /* struct ata_port flags */ |
949b38af | 169 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 170 | /* (doesn't imply presence) */ |
949b38af TH |
171 | ATA_FLAG_SATA = (1 << 1), |
172 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ | |
173 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ | |
174 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ | |
175 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ | |
176 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ | |
177 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
178 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
179 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
180 | * doesn't handle PIO interrupts */ | |
181 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
7395acb2 | 182 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 183 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 184 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 185 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 186 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 187 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
949b38af | 188 | |
b51e9e5d TH |
189 | /* The following flag belongs to ap->pflags but is kept in |
190 | * ap->flags because it's referenced in many LLDs and will be | |
191 | * removed in not-too-distant future. | |
192 | */ | |
193 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
194 | ||
195 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 196 | |
b51e9e5d TH |
197 | /* struct ata_port pflags */ |
198 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
199 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
200 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
201 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
202 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
203 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ | |
204 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ | |
f4d6d004 | 205 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 206 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
949b38af | 207 | |
b51e9e5d | 208 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 209 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
64578a3d | 210 | ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ |
949b38af TH |
211 | |
212 | /* struct ata_queued_cmd flags */ | |
213 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
214 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ | |
215 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ | |
1da177e4 | 216 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
27197367 | 217 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 218 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 219 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e61e0672 | 220 | |
9ec957f2 TH |
221 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
222 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
223 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 224 | |
4e5ec5db | 225 | /* host set flags */ |
cca3974e | 226 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 227 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
9bec2e38 | 228 | |
b8b275ef TH |
229 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
230 | ||
1da177e4 | 231 | /* various lengths of time */ |
8d238e01 AC |
232 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
233 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ | |
a2a7a662 TH |
234 | ATA_TMOUT_INTERNAL = 30 * HZ, |
235 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, | |
1da177e4 LT |
236 | |
237 | /* ATA bus states */ | |
238 | BUS_UNKNOWN = 0, | |
239 | BUS_DMA = 1, | |
240 | BUS_IDLE = 2, | |
241 | BUS_NOINTR = 3, | |
242 | BUS_NODATA = 4, | |
243 | BUS_TIMER = 5, | |
244 | BUS_PIO = 6, | |
245 | BUS_EDD = 7, | |
246 | BUS_IDENTIFY = 8, | |
247 | BUS_PACKET = 9, | |
248 | ||
249 | /* SATA port states */ | |
250 | PORT_UNKNOWN = 0, | |
251 | PORT_ENABLED = 1, | |
252 | PORT_DISABLED = 2, | |
253 | ||
254 | /* encoding various smaller bitmaps into a single | |
1da7b0d0 | 255 | * unsigned int bitmap |
1da177e4 | 256 | */ |
b352e57d AC |
257 | ATA_BITS_PIO = 7, |
258 | ATA_BITS_MWDMA = 5, | |
1da7b0d0 TH |
259 | ATA_BITS_UDMA = 8, |
260 | ||
261 | ATA_SHIFT_PIO = 0, | |
262 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, | |
263 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, | |
264 | ||
265 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, | |
266 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, | |
267 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, | |
cedc9a47 JG |
268 | |
269 | /* size of buffer to pad xfers ending on unaligned boundaries */ | |
270 | ATA_DMA_PAD_SZ = 4, | |
271 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, | |
949b38af | 272 | |
0c247c55 TH |
273 | /* ering size */ |
274 | ATA_ERING_SIZE = 32, | |
275 | ||
31cc23b3 TH |
276 | /* return values for ->qc_defer */ |
277 | ATA_DEFER_LINK = 1, | |
278 | ATA_DEFER_PORT = 2, | |
279 | ||
f3e81b19 TH |
280 | /* desc_len for ata_eh_info and context */ |
281 | ATA_EH_DESC_LEN = 80, | |
282 | ||
9be1e979 TH |
283 | /* reset / recovery action types */ |
284 | ATA_EH_REVALIDATE = (1 << 0), | |
285 | ATA_EH_SOFTRESET = (1 << 1), | |
286 | ATA_EH_HARDRESET = (1 << 2), | |
f9df58cb | 287 | ATA_EH_ENABLE_LINK = (1 << 3), |
9be1e979 TH |
288 | |
289 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
9666f400 | 290 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
9be1e979 | 291 | |
f3e81b19 | 292 | /* ata_eh_info->flags */ |
abdda733 | 293 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
13abf50d | 294 | ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ |
1cdaf534 TH |
295 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
296 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
abdda733 | 297 | |
0d64a233 TH |
298 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
299 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
300 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
301 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
302 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 303 | |
0d64a233 | 304 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d TH |
305 | ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
306 | ||
a1e10f7e TH |
307 | /* max tries if error condition is still set after ->error_handler */ |
308 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 309 | |
14d2bac1 TH |
310 | /* how hard are we gonna try to probe/recover devices */ |
311 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 312 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
313 | ATA_EH_PMP_TRIES = 5, |
314 | ATA_EH_PMP_LINK_TRIES = 3, | |
315 | ||
316 | SATA_PMP_SCR_TIMEOUT = 250, | |
f5914a46 | 317 | |
93590859 AC |
318 | /* Horkage types. May be set by libata or controller on drives |
319 | (some horkage may be drive/controller pair dependant */ | |
320 | ||
321 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
322 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
323 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 324 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 325 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
e31e8531 | 326 | ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ |
93328e11 | 327 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
b3a70601 AC |
328 | |
329 | /* DMA mask for user DMA control: User visible values; DO NOT | |
330 | renumber */ | |
331 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
332 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
333 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
1da177e4 LT |
334 | }; |
335 | ||
14be71f4 | 336 | enum hsm_task_states { |
c56b14d2 | 337 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
338 | HSM_ST_FIRST, /* (waiting the device to) |
339 | write CDB or first data block */ | |
c56b14d2 AL |
340 | HSM_ST, /* (waiting the device to) transfer data */ |
341 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 342 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
343 | }; |
344 | ||
a7dac447 | 345 | enum ata_completion_errors { |
11a56d24 TH |
346 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
347 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
348 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
349 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
350 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
351 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
352 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
353 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
354 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 355 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 356 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
357 | }; |
358 | ||
1da177e4 LT |
359 | /* forward declarations */ |
360 | struct scsi_device; | |
361 | struct ata_port_operations; | |
362 | struct ata_port; | |
cc0680a5 | 363 | struct ata_link; |
1da177e4 LT |
364 | struct ata_queued_cmd; |
365 | ||
366 | /* typedefs */ | |
77853bf2 | 367 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
368 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
369 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 370 | unsigned long deadline); |
cc0680a5 | 371 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 LT |
372 | |
373 | struct ata_ioports { | |
0d5ff566 TH |
374 | void __iomem *cmd_addr; |
375 | void __iomem *data_addr; | |
376 | void __iomem *error_addr; | |
377 | void __iomem *feature_addr; | |
378 | void __iomem *nsect_addr; | |
379 | void __iomem *lbal_addr; | |
380 | void __iomem *lbam_addr; | |
381 | void __iomem *lbah_addr; | |
382 | void __iomem *device_addr; | |
383 | void __iomem *status_addr; | |
384 | void __iomem *command_addr; | |
385 | void __iomem *altstatus_addr; | |
386 | void __iomem *ctl_addr; | |
387 | void __iomem *bmdma_addr; | |
388 | void __iomem *scr_addr; | |
1da177e4 LT |
389 | }; |
390 | ||
cca3974e | 391 | struct ata_host { |
1da177e4 LT |
392 | spinlock_t lock; |
393 | struct device *dev; | |
0d5ff566 | 394 | void __iomem * const *iomap; |
1da177e4 LT |
395 | unsigned int n_ports; |
396 | void *private_data; | |
057ace5e | 397 | const struct ata_port_operations *ops; |
5444a6f4 | 398 | unsigned long flags; |
fafbae87 TH |
399 | #ifdef CONFIG_ATA_ACPI |
400 | acpi_handle acpi_handle; | |
401 | #endif | |
032af1ce | 402 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 403 | struct ata_port *ports[0]; |
1da177e4 LT |
404 | }; |
405 | ||
406 | struct ata_queued_cmd { | |
407 | struct ata_port *ap; | |
408 | struct ata_device *dev; | |
409 | ||
410 | struct scsi_cmnd *scsicmd; | |
411 | void (*scsidone)(struct scsi_cmnd *); | |
412 | ||
413 | struct ata_taskfile tf; | |
414 | u8 cdb[ATAPI_CDB_LEN]; | |
415 | ||
416 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
417 | unsigned int tag; | |
418 | unsigned int n_elem; | |
87260216 | 419 | unsigned int n_iter; |
cedc9a47 | 420 | unsigned int orig_n_elem; |
1da177e4 LT |
421 | |
422 | int dma_dir; | |
423 | ||
cedc9a47 | 424 | unsigned int pad_len; |
5a5dbd18 | 425 | unsigned int sect_size; |
cedc9a47 | 426 | |
1da177e4 LT |
427 | unsigned int nbytes; |
428 | unsigned int curbytes; | |
429 | ||
87260216 | 430 | struct scatterlist *cursg; |
1da177e4 LT |
431 | unsigned int cursg_ofs; |
432 | ||
433 | struct scatterlist sgent; | |
cedc9a47 | 434 | struct scatterlist pad_sgent; |
1da177e4 LT |
435 | void *buf_virt; |
436 | ||
cedc9a47 JG |
437 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
438 | struct scatterlist *__sg; | |
1da177e4 | 439 | |
a22e2eb0 | 440 | unsigned int err_mask; |
e61e0672 | 441 | struct ata_taskfile result_tf; |
1da177e4 LT |
442 | ata_qc_cb_t complete_fn; |
443 | ||
1da177e4 | 444 | void *private_data; |
1c50dc83 | 445 | void *lldd_task; |
1da177e4 LT |
446 | }; |
447 | ||
cca3974e | 448 | struct ata_port_stats { |
1da177e4 LT |
449 | unsigned long unhandled_irq; |
450 | unsigned long idle_irq; | |
451 | unsigned long rw_reqbuf; | |
452 | }; | |
453 | ||
0c247c55 TH |
454 | struct ata_ering_entry { |
455 | int is_io; | |
456 | unsigned int err_mask; | |
457 | u64 timestamp; | |
458 | }; | |
459 | ||
460 | struct ata_ering { | |
461 | int cursor; | |
462 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
463 | }; | |
464 | ||
1da177e4 | 465 | struct ata_device { |
9af5c9c9 | 466 | struct ata_link *link; |
72fa4b74 | 467 | unsigned int devno; /* 0 or 1 */ |
1da177e4 | 468 | unsigned long flags; /* ATA_DFLAG_xxx */ |
75683fe7 | 469 | unsigned int horkage; /* List of broken features */ |
3edebac4 | 470 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
471 | #ifdef CONFIG_ATA_ACPI |
472 | acpi_handle acpi_handle; | |
473 | #endif | |
72fa4b74 TH |
474 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
475 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 476 | unsigned int class; /* ATA_DEV_xxx */ |
e0a71752 TH |
477 | |
478 | union { | |
479 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
480 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
481 | }; | |
482 | ||
1da177e4 LT |
483 | u8 pio_mode; |
484 | u8 dma_mode; | |
485 | u8 xfer_mode; | |
486 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
487 | ||
8cbd6df1 AL |
488 | unsigned int multi_count; /* sectors count for |
489 | READ/WRITE MULTIPLE */ | |
b00eec1d | 490 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 491 | unsigned int cdb_len; |
8bf62ece | 492 | |
acf356b1 TH |
493 | /* per-dev xfer mask */ |
494 | unsigned int pio_mask; | |
495 | unsigned int mwdma_mask; | |
496 | unsigned int udma_mask; | |
497 | ||
8bf62ece AL |
498 | /* for CHS addressing */ |
499 | u16 cylinders; /* Number of cylinders */ | |
500 | u16 heads; /* Number of heads */ | |
501 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
502 | |
503 | /* error history */ | |
504 | struct ata_ering ering; | |
7d47e8d4 | 505 | int spdn_cnt; |
1da177e4 LT |
506 | }; |
507 | ||
72fa4b74 TH |
508 | /* Offset into struct ata_device. Fields above it are maintained |
509 | * acress device init. Fields below are zeroed. | |
510 | */ | |
511 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
512 | ||
f3e81b19 TH |
513 | struct ata_eh_info { |
514 | struct ata_device *dev; /* offending device */ | |
515 | u32 serror; /* SError from LLDD */ | |
516 | unsigned int err_mask; /* port-wide err_mask */ | |
517 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 518 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 519 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 520 | |
abdda733 TH |
521 | unsigned int probe_mask; |
522 | ||
f3e81b19 TH |
523 | char desc[ATA_EH_DESC_LEN]; |
524 | int desc_len; | |
525 | }; | |
526 | ||
527 | struct ata_eh_context { | |
528 | struct ata_eh_info i; | |
529 | int tries[ATA_MAX_DEVICES]; | |
abdda733 TH |
530 | unsigned int classes[ATA_MAX_DEVICES]; |
531 | unsigned int did_probe_mask; | |
f3e81b19 TH |
532 | }; |
533 | ||
64578a3d TH |
534 | struct ata_acpi_drive |
535 | { | |
536 | u32 pio; | |
537 | u32 dma; | |
538 | } __packed; | |
539 | ||
540 | struct ata_acpi_gtm { | |
541 | struct ata_acpi_drive drive[2]; | |
542 | u32 flags; | |
543 | } __packed; | |
544 | ||
9af5c9c9 TH |
545 | struct ata_link { |
546 | struct ata_port *ap; | |
8989805d | 547 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
548 | |
549 | unsigned int active_tag; /* active tag on this link */ | |
550 | u32 sactive; /* active NCQ commands */ | |
551 | ||
0c88758b TH |
552 | unsigned int flags; /* ATA_LFLAG_xxx */ |
553 | ||
9af5c9c9 TH |
554 | unsigned int hw_sata_spd_limit; |
555 | unsigned int sata_spd_limit; | |
556 | unsigned int sata_spd; /* current SATA PHY speed */ | |
557 | ||
558 | /* record runtime error info, protected by host_set lock */ | |
559 | struct ata_eh_info eh_info; | |
560 | /* EH context */ | |
561 | struct ata_eh_context eh_context; | |
562 | ||
563 | struct ata_device device[ATA_MAX_DEVICES]; | |
564 | }; | |
565 | ||
1da177e4 | 566 | struct ata_port { |
cca3974e | 567 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
057ace5e | 568 | const struct ata_port_operations *ops; |
ba6a1308 | 569 | spinlock_t *lock; |
1da177e4 | 570 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 571 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
572 | unsigned int print_id; /* user visible unique port ID */ |
573 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
574 | |
575 | struct ata_prd *prd; /* our SG list */ | |
576 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
577 | ||
cedc9a47 JG |
578 | void *pad; /* array of DMA pad buffers */ |
579 | dma_addr_t pad_dma; | |
580 | ||
1da177e4 LT |
581 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
582 | ||
583 | u8 ctl; /* cache of ATA control register */ | |
584 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
585 | unsigned int pio_mask; |
586 | unsigned int mwdma_mask; | |
587 | unsigned int udma_mask; | |
588 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
589 | |
590 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
6cec4a39 | 591 | unsigned long qc_allocated; |
dedaf2b0 | 592 | unsigned int qc_active; |
da917d69 | 593 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 594 | |
9af5c9c9 | 595 | struct ata_link link; /* host default link */ |
1da177e4 | 596 | |
8989805d TH |
597 | int nr_pmp_links; /* nr of available PMP links */ |
598 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 599 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 600 | |
cca3974e JG |
601 | struct ata_port_stats stats; |
602 | struct ata_host *host; | |
2f1f610b | 603 | struct device *dev; |
1da177e4 | 604 | |
65f27f38 | 605 | void *port_task_data; |
52bad64d DH |
606 | struct delayed_work port_task; |
607 | struct delayed_work hotplug_task; | |
3b01b8af | 608 | struct work_struct scsi_rescan_task; |
86e45b6b | 609 | |
14be71f4 | 610 | unsigned int hsm_task_state; |
1da177e4 | 611 | |
bfd60579 | 612 | u32 msg_enable; |
a72ec4ce | 613 | struct list_head eh_done_q; |
c6cf9e99 | 614 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 615 | int eh_tries; |
bfd60579 | 616 | |
500530f6 TH |
617 | pm_message_t pm_mesg; |
618 | int *pm_result; | |
619 | ||
5ddf24c5 TH |
620 | struct timer_list fastdrain_timer; |
621 | unsigned long fastdrain_cnt; | |
622 | ||
1da177e4 | 623 | void *private_data; |
fe635c7e | 624 | |
fafbae87 TH |
625 | #ifdef CONFIG_ATA_ACPI |
626 | acpi_handle acpi_handle; | |
64578a3d | 627 | struct ata_acpi_gtm acpi_gtm; |
fafbae87 | 628 | #endif |
fe635c7e | 629 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
630 | }; |
631 | ||
632 | struct ata_port_operations { | |
cd0d3bbc | 633 | void (*dev_config) (struct ata_device *); |
1da177e4 LT |
634 | |
635 | void (*set_piomode) (struct ata_port *, struct ata_device *); | |
636 | void (*set_dmamode) (struct ata_port *, struct ata_device *); | |
a76b62ca | 637 | unsigned long (*mode_filter) (struct ata_device *, unsigned long); |
1da177e4 | 638 | |
057ace5e | 639 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
640 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
641 | ||
057ace5e | 642 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
643 | u8 (*check_status)(struct ata_port *ap); |
644 | u8 (*check_altstatus)(struct ata_port *ap); | |
1da177e4 LT |
645 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
646 | ||
c19ba8af | 647 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
0260731f | 648 | int (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev); |
c19ba8af | 649 | |
be0d18df AC |
650 | int (*cable_detect) (struct ata_port *ap); |
651 | ||
b229a7b0 | 652 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
1da177e4 LT |
653 | |
654 | void (*bmdma_setup) (struct ata_queued_cmd *qc); | |
655 | void (*bmdma_start) (struct ata_queued_cmd *qc); | |
656 | ||
a6b2c5d4 AC |
657 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
658 | ||
31cc23b3 | 659 | int (*qc_defer) (struct ata_queued_cmd *qc); |
1da177e4 | 660 | void (*qc_prep) (struct ata_queued_cmd *qc); |
9a3d9eb0 | 661 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
1da177e4 | 662 | |
e0a71752 TH |
663 | /* port multiplier */ |
664 | void (*pmp_attach) (struct ata_port *ap); | |
665 | void (*pmp_detach) (struct ata_port *ap); | |
e0a71752 | 666 | |
9ec957f2 TH |
667 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
668 | * indicates that new-style EH is in place. | |
669 | */ | |
670 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ | |
671 | ||
672 | void (*freeze) (struct ata_port *ap); | |
673 | void (*thaw) (struct ata_port *ap); | |
674 | void (*error_handler) (struct ata_port *ap); | |
675 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); | |
1da177e4 | 676 | |
7d12e780 | 677 | irq_handler_t irq_handler; |
1da177e4 | 678 | void (*irq_clear) (struct ata_port *); |
83625006 | 679 | u8 (*irq_on) (struct ata_port *); |
1da177e4 | 680 | |
da3dbb17 TH |
681 | int (*scr_read) (struct ata_port *ap, unsigned int sc_reg, u32 *val); |
682 | int (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 683 | |
500530f6 TH |
684 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
685 | int (*port_resume) (struct ata_port *ap); | |
686 | ||
1da177e4 LT |
687 | int (*port_start) (struct ata_port *ap); |
688 | void (*port_stop) (struct ata_port *ap); | |
689 | ||
cca3974e | 690 | void (*host_stop) (struct ata_host *host); |
1da177e4 | 691 | |
b73fc89f | 692 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
1da177e4 LT |
693 | u8 (*bmdma_status) (struct ata_port *ap); |
694 | }; | |
695 | ||
696 | struct ata_port_info { | |
d0be4a7d | 697 | struct scsi_host_template *sht; |
cca3974e | 698 | unsigned long flags; |
0c88758b | 699 | unsigned long link_flags; |
1da177e4 LT |
700 | unsigned long pio_mask; |
701 | unsigned long mwdma_mask; | |
702 | unsigned long udma_mask; | |
057ace5e | 703 | const struct ata_port_operations *port_ops; |
21b0ad4f | 704 | irq_handler_t irq_handler; |
e99f8b5e | 705 | void *private_data; |
1da177e4 LT |
706 | }; |
707 | ||
452503f9 AC |
708 | struct ata_timing { |
709 | unsigned short mode; /* ATA mode */ | |
710 | unsigned short setup; /* t1 */ | |
711 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
712 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
713 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
714 | unsigned short active; /* t2 or tD */ | |
715 | unsigned short recover; /* t2i or tK */ | |
716 | unsigned short cycle; /* t0 */ | |
717 | unsigned short udma; /* t2CYCTYP/2 */ | |
718 | }; | |
719 | ||
720 | #define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin) | |
1da177e4 | 721 | |
e9c83914 TH |
722 | extern const unsigned long sata_deb_timing_normal[]; |
723 | extern const unsigned long sata_deb_timing_hotplug[]; | |
724 | extern const unsigned long sata_deb_timing_long[]; | |
725 | ||
dd5b06c4 | 726 | extern const struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 727 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 728 | |
e9c83914 TH |
729 | static inline const unsigned long * |
730 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
731 | { | |
732 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
733 | return sata_deb_timing_hotplug; | |
734 | else | |
735 | return sata_deb_timing_normal; | |
736 | } | |
d7bb4cc7 | 737 | |
dd5b06c4 TH |
738 | static inline int ata_port_is_dummy(struct ata_port *ap) |
739 | { | |
740 | return ap->ops == &ata_dummy_port_ops; | |
741 | } | |
742 | ||
936fd732 | 743 | extern void sata_print_link_status(struct ata_link *link); |
1da177e4 LT |
744 | extern void ata_port_probe(struct ata_port *); |
745 | extern void __sata_phy_reset(struct ata_port *ap); | |
746 | extern void sata_phy_reset(struct ata_port *ap); | |
747 | extern void ata_bus_reset(struct ata_port *ap); | |
936fd732 TH |
748 | extern int sata_set_spd(struct ata_link *link); |
749 | extern int sata_link_debounce(struct ata_link *link, | |
750 | const unsigned long *params, unsigned long deadline); | |
751 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
752 | unsigned long deadline); | |
cc0680a5 TH |
753 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
754 | extern int ata_std_softreset(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 755 | unsigned long deadline); |
cc0680a5 TH |
756 | extern int sata_link_hardreset(struct ata_link *link, |
757 | const unsigned long *timing, unsigned long deadline); | |
758 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, | |
d4b2bab4 | 759 | unsigned long deadline); |
cc0680a5 | 760 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 LT |
761 | extern void ata_port_disable(struct ata_port *); |
762 | extern void ata_std_ports(struct ata_ioports *ioaddr); | |
2855568b | 763 | |
f3187195 | 764 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
765 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
766 | const struct ata_port_info * const * ppi, int n_ports); | |
ecef7253 | 767 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
768 | extern int ata_host_register(struct ata_host *host, |
769 | struct scsi_host_template *sht); | |
f5cda257 TH |
770 | extern int ata_host_activate(struct ata_host *host, int irq, |
771 | irq_handler_t irq_handler, unsigned long irq_flags, | |
772 | struct scsi_host_template *sht); | |
0529c159 | 773 | extern void ata_host_detach(struct ata_host *host); |
cca3974e JG |
774 | extern void ata_host_init(struct ata_host *, struct device *, |
775 | unsigned long, const struct ata_port_operations *); | |
193515d5 | 776 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
777 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
778 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
80289167 | 779 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 780 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
781 | struct ata_port_info *, struct Scsi_Host *); |
782 | extern int ata_sas_port_init(struct ata_port *); | |
783 | extern int ata_sas_port_start(struct ata_port *ap); | |
784 | extern void ata_sas_port_stop(struct ata_port *ap); | |
785 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
786 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
787 | struct ata_port *ap); | |
1da177e4 | 788 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
936fd732 TH |
789 | extern int sata_scr_valid(struct ata_link *link); |
790 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
791 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
792 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
793 | extern int ata_link_online(struct ata_link *link); | |
794 | extern int ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 795 | #ifdef CONFIG_PM |
cca3974e JG |
796 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
797 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 798 | #endif |
67846b30 | 799 | extern int ata_ratelimit(void); |
d1adc1bb TH |
800 | extern int ata_busy_sleep(struct ata_port *ap, |
801 | unsigned long timeout_pat, unsigned long timeout); | |
d4b2bab4 | 802 | extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); |
65f27f38 | 803 | extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, |
86e45b6b | 804 | void *data, unsigned long delay); |
c22daff4 TH |
805 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
806 | unsigned long interval_msec, | |
807 | unsigned long timeout_msec); | |
3f19859e TH |
808 | extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present, |
809 | u8 *r_err); | |
67846b30 | 810 | |
1da177e4 LT |
811 | /* |
812 | * Default driver ops implementations | |
813 | */ | |
057ace5e | 814 | extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 | 815 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
9977126c TH |
816 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
817 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 818 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
1da177e4 LT |
819 | extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); |
820 | extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); | |
821 | extern u8 ata_check_status(struct ata_port *ap); | |
822 | extern u8 ata_altstatus(struct ata_port *ap); | |
057ace5e | 823 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 | 824 | extern int ata_port_start (struct ata_port *ap); |
d92e74d3 | 825 | extern int ata_sff_port_start (struct ata_port *ap); |
7d12e780 | 826 | extern irqreturn_t ata_interrupt (int irq, void *dev_instance); |
0d5ff566 TH |
827 | extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, |
828 | unsigned int buflen, int write_data); | |
829 | extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, | |
830 | unsigned int buflen, int write_data); | |
31cc23b3 | 831 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
d26fc955 | 832 | extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 | 833 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
e46834cd | 834 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
9a3d9eb0 | 835 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
1da177e4 LT |
836 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
837 | unsigned int buflen); | |
838 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, | |
839 | unsigned int n_elem); | |
057ace5e | 840 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 841 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
842 | extern void ata_id_string(const u16 *id, unsigned char *s, |
843 | unsigned int ofs, unsigned int len); | |
844 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
845 | unsigned int ofs, unsigned int len); | |
10305f0f | 846 | extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); |
1da177e4 LT |
847 | extern void ata_bmdma_setup (struct ata_queued_cmd *qc); |
848 | extern void ata_bmdma_start (struct ata_queued_cmd *qc); | |
b73fc89f | 849 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
1da177e4 LT |
850 | extern u8 ata_bmdma_status(struct ata_port *ap); |
851 | extern void ata_bmdma_irq_clear(struct ata_port *ap); | |
6d97dbd7 TH |
852 | extern void ata_bmdma_freeze(struct ata_port *ap); |
853 | extern void ata_bmdma_thaw(struct ata_port *ap); | |
f5914a46 | 854 | extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
6d97dbd7 TH |
855 | ata_reset_fn_t softreset, |
856 | ata_reset_fn_t hardreset, | |
857 | ata_postreset_fn_t postreset); | |
858 | extern void ata_bmdma_error_handler(struct ata_port *ap); | |
859 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); | |
9a1004d0 TH |
860 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
861 | u8 status, int in_wq); | |
f686bcb8 | 862 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
dedaf2b0 TH |
863 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
864 | void (*finish_qc)(struct ata_queued_cmd *)); | |
3373efd8 | 865 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
866 | void (*done)(struct scsi_cmnd *)); |
867 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
868 | struct block_device *bdev, | |
869 | sector_t capacity, int geom[]); | |
870 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 871 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
872 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
873 | int queue_depth); | |
3373efd8 | 874 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 875 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
83625006 | 876 | extern u8 ata_irq_on(struct ata_port *ap); |
1da177e4 | 877 | |
be0d18df AC |
878 | extern int ata_cable_40wire(struct ata_port *ap); |
879 | extern int ata_cable_80wire(struct ata_port *ap); | |
880 | extern int ata_cable_sata(struct ata_port *ap); | |
881 | extern int ata_cable_unknown(struct ata_port *ap); | |
882 | ||
452503f9 AC |
883 | /* |
884 | * Timing helpers | |
885 | */ | |
1bc4ccff AC |
886 | |
887 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); | |
452503f9 AC |
888 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
889 | struct ata_timing *, int, int); | |
890 | extern void ata_timing_merge(const struct ata_timing *, | |
891 | const struct ata_timing *, struct ata_timing *, | |
892 | unsigned int); | |
893 | ||
894 | enum { | |
895 | ATA_TIMING_SETUP = (1 << 0), | |
896 | ATA_TIMING_ACT8B = (1 << 1), | |
897 | ATA_TIMING_REC8B = (1 << 2), | |
898 | ATA_TIMING_CYC8B = (1 << 3), | |
899 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
900 | ATA_TIMING_CYC8B, | |
901 | ATA_TIMING_ACTIVE = (1 << 4), | |
902 | ATA_TIMING_RECOVER = (1 << 5), | |
903 | ATA_TIMING_CYCLE = (1 << 6), | |
904 | ATA_TIMING_UDMA = (1 << 7), | |
905 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | | |
906 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
907 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
908 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, | |
909 | }; | |
910 | ||
e1ddb4b6 AC |
911 | /* libata-acpi.c */ |
912 | #ifdef CONFIG_ATA_ACPI | |
913 | extern int ata_acpi_cbl_80wire(struct ata_port *ap); | |
badff03d AC |
914 | int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm); |
915 | int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm); | |
e1ddb4b6 AC |
916 | #else |
917 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } | |
918 | #endif | |
1da177e4 LT |
919 | |
920 | #ifdef CONFIG_PCI | |
2855568b JG |
921 | struct pci_dev; |
922 | ||
923 | extern int ata_pci_init_one (struct pci_dev *pdev, | |
924 | const struct ata_port_info * const * ppi); | |
925 | extern void ata_pci_remove_one (struct pci_dev *pdev); | |
926 | #ifdef CONFIG_PM | |
927 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
928 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
929 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
930 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
931 | #endif | |
932 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); | |
933 | ||
1da177e4 LT |
934 | struct pci_bits { |
935 | unsigned int reg; /* PCI config register to read */ | |
936 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
937 | unsigned long mask; | |
938 | unsigned long val; | |
939 | }; | |
940 | ||
d583bc18 | 941 | extern int ata_pci_init_sff_host(struct ata_host *host); |
1626aeb8 | 942 | extern int ata_pci_init_bmdma(struct ata_host *host); |
d583bc18 TH |
943 | extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, |
944 | const struct ata_port_info * const * ppi, | |
945 | struct ata_host **r_host); | |
057ace5e | 946 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
a76b62ca | 947 | extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); |
1da177e4 LT |
948 | #endif /* CONFIG_PCI */ |
949 | ||
3af9a77a TH |
950 | /* |
951 | * PMP | |
952 | */ | |
31f88384 | 953 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
3af9a77a TH |
954 | extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline); |
955 | extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class, | |
956 | unsigned long deadline); | |
957 | extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class); | |
958 | extern void sata_pmp_do_eh(struct ata_port *ap, | |
959 | ata_prereset_fn_t prereset, ata_reset_fn_t softreset, | |
960 | ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, | |
961 | ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset, | |
962 | ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset); | |
963 | ||
ece1d636 TH |
964 | /* |
965 | * EH | |
966 | */ | |
ece1d636 | 967 | extern void ata_eng_timeout(struct ata_port *ap); |
7b70fc03 TH |
968 | |
969 | extern void ata_port_schedule_eh(struct ata_port *ap); | |
dbd82616 | 970 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 971 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 972 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 973 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
974 | |
975 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
976 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 977 | |
ece1d636 TH |
978 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
979 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
980 | ||
f5914a46 TH |
981 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
982 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
983 | ata_postreset_fn_t postreset); | |
022bdb07 | 984 | |
61440db6 TH |
985 | /* |
986 | * printk helpers | |
987 | */ | |
988 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
44877b4e | 989 | printk(lv"ata%u: "fmt, (ap)->print_id , ##args) |
61440db6 | 990 | |
8989805d TH |
991 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
992 | if ((link)->ap->nr_pmp_links) \ | |
993 | printk(lv"ata%u.%02u: "fmt, (link)->ap->print_id, \ | |
994 | (link)->pmp , ##args); \ | |
995 | else \ | |
996 | printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args); \ | |
997 | } while(0) | |
9af5c9c9 | 998 | |
61440db6 | 999 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
8989805d TH |
1000 | printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, \ |
1001 | (dev)->link->pmp + (dev)->devno , ##args) | |
1da177e4 | 1002 | |
f3e81b19 TH |
1003 | /* |
1004 | * ata_eh_info helpers | |
1005 | */ | |
cb94c1cf TH |
1006 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1007 | __attribute__ ((format (printf, 2, 3))); | |
1008 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1009 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1010 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1011 | |
f8f1e1cc | 1012 | static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi) |
084fe639 | 1013 | { |
f8f1e1cc | 1014 | ehi->flags |= ATA_EHI_RESUME_LINK; |
084fe639 TH |
1015 | ehi->action |= ATA_EH_SOFTRESET; |
1016 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; | |
1017 | } | |
1018 | ||
c0b6c037 TH |
1019 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1020 | { | |
f8f1e1cc TH |
1021 | ata_ehi_schedule_probe(ehi); |
1022 | ehi->flags |= ATA_EHI_HOTPLUGGED; | |
f9df58cb | 1023 | ehi->action |= ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1024 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1025 | } | |
1026 | ||
cbcdd875 TH |
1027 | /* |
1028 | * port description helpers | |
1029 | */ | |
1030 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1031 | __attribute__ ((format (printf, 2, 3))); | |
1032 | #ifdef CONFIG_PCI | |
1033 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1034 | const char *name); | |
1035 | #endif | |
1036 | ||
61440db6 TH |
1037 | /* |
1038 | * qc helpers | |
1039 | */ | |
cc1887f3 TH |
1040 | static inline struct scatterlist * |
1041 | ata_qc_first_sg(struct ata_queued_cmd *qc) | |
1042 | { | |
87260216 | 1043 | qc->n_iter = 0; |
cc1887f3 TH |
1044 | if (qc->n_elem) |
1045 | return qc->__sg; | |
1046 | if (qc->pad_len) | |
1047 | return &qc->pad_sgent; | |
1048 | return NULL; | |
1049 | } | |
1050 | ||
cedc9a47 JG |
1051 | static inline struct scatterlist * |
1052 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) | |
1053 | { | |
1054 | if (sg == &qc->pad_sgent) | |
1055 | return NULL; | |
87260216 JA |
1056 | if (++qc->n_iter < qc->n_elem) |
1057 | return sg_next(sg); | |
cc1887f3 TH |
1058 | if (qc->pad_len) |
1059 | return &qc->pad_sgent; | |
1060 | return NULL; | |
cedc9a47 JG |
1061 | } |
1062 | ||
1063 | #define ata_for_each_sg(sg, qc) \ | |
cc1887f3 | 1064 | for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) |
cedc9a47 | 1065 | |
1da177e4 LT |
1066 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1067 | { | |
1068 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1069 | } | |
1070 | ||
2ab7db1f TH |
1071 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1072 | { | |
1073 | return tag == ATA_MAX_QUEUE - 1; | |
1074 | } | |
1075 | ||
5806db22 TH |
1076 | /* |
1077 | * device helpers | |
1078 | */ | |
e1211e3f | 1079 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1080 | { |
e0a71752 TH |
1081 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1082 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1083 | } |
1084 | ||
e1211e3f | 1085 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1086 | { |
e0a71752 TH |
1087 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1088 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1089 | } |
1090 | ||
002c8054 TH |
1091 | static inline unsigned int ata_class_absent(unsigned int class) |
1092 | { | |
1093 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1094 | } | |
1095 | ||
e1211e3f TH |
1096 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1097 | { | |
1098 | return ata_class_enabled(dev->class); | |
1099 | } | |
1100 | ||
1101 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1102 | { | |
1103 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1104 | } |
1105 | ||
002c8054 TH |
1106 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1107 | { | |
1108 | return ata_class_absent(dev->class); | |
1109 | } | |
1110 | ||
5806db22 | 1111 | /* |
f58229f8 | 1112 | * link helpers |
5806db22 | 1113 | */ |
8989805d TH |
1114 | static inline int ata_is_host_link(const struct ata_link *link) |
1115 | { | |
1116 | return link == &link->ap->link; | |
1117 | } | |
1118 | ||
f58229f8 | 1119 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1120 | { |
8989805d | 1121 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1122 | return 2; |
1123 | return 1; | |
1124 | } | |
1125 | ||
da917d69 TH |
1126 | static inline int ata_link_active(struct ata_link *link) |
1127 | { | |
1128 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1129 | } | |
1130 | ||
8989805d TH |
1131 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
1132 | { | |
1133 | if (ap->nr_pmp_links) | |
1134 | return ap->pmp_link; | |
1135 | return &ap->link; | |
1136 | } | |
1137 | ||
1138 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) | |
1139 | { | |
1140 | struct ata_port *ap = link->ap; | |
1141 | ||
1142 | if (link == &ap->link) { | |
1143 | if (!ap->nr_pmp_links) | |
1144 | return NULL; | |
1145 | return ap->pmp_link; | |
1146 | } | |
1147 | ||
1148 | if (++link - ap->pmp_link < ap->nr_pmp_links) | |
1149 | return link; | |
1150 | return NULL; | |
1151 | } | |
1152 | ||
1153 | #define __ata_port_for_each_link(lk, ap) \ | |
1154 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) | |
1155 | ||
1156 | #define ata_port_for_each_link(link, ap) \ | |
1157 | for ((link) = ata_port_first_link(ap); (link); \ | |
1158 | (link) = ata_port_next_link(link)) | |
f58229f8 TH |
1159 | |
1160 | #define ata_link_for_each_dev(dev, link) \ | |
1161 | for ((dev) = (link)->device; \ | |
1162 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ | |
1163 | (dev)++) | |
1164 | ||
1165 | #define ata_link_for_each_dev_reverse(dev, link) \ | |
1166 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ | |
1167 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) | |
5806db22 | 1168 | |
1da177e4 LT |
1169 | static inline u8 ata_chk_status(struct ata_port *ap) |
1170 | { | |
1171 | return ap->ops->check_status(ap); | |
1172 | } | |
1173 | ||
6d1245bf TH |
1174 | /** |
1175 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1176 | * @dev: ATA device to test for | |
1177 | * | |
1178 | * LOCKING: | |
1179 | * spin_lock_irqsave(host lock) | |
1180 | * | |
1181 | * RETURNS: | |
1182 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1183 | */ | |
1184 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1185 | { | |
1186 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1187 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1188 | } | |
0baab86b EF |
1189 | |
1190 | /** | |
1191 | * ata_pause - Flush writes and pause 400 nanoseconds. | |
1192 | * @ap: Port to wait for. | |
1193 | * | |
1194 | * LOCKING: | |
1195 | * Inherited from caller. | |
1196 | */ | |
1197 | ||
1da177e4 LT |
1198 | static inline void ata_pause(struct ata_port *ap) |
1199 | { | |
1200 | ata_altstatus(ap); | |
1201 | ndelay(400); | |
1202 | } | |
1203 | ||
0baab86b EF |
1204 | |
1205 | /** | |
1206 | * ata_busy_wait - Wait for a port status register | |
1207 | * @ap: Port to wait for. | |
0777721c A |
1208 | * @bits: bits that must be clear |
1209 | * @max: number of 10uS waits to perform | |
0baab86b EF |
1210 | * |
1211 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1212 | * status register to be cleared. | |
1213 | * Returns final value of status register. | |
1214 | * | |
1215 | * LOCKING: | |
1216 | * Inherited from caller. | |
1217 | */ | |
1218 | ||
1da177e4 LT |
1219 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
1220 | unsigned int max) | |
1221 | { | |
1222 | u8 status; | |
1223 | ||
1224 | do { | |
1225 | udelay(10); | |
1226 | status = ata_chk_status(ap); | |
1227 | max--; | |
d1adc1bb | 1228 | } while (status != 0xff && (status & bits) && (max > 0)); |
1da177e4 LT |
1229 | |
1230 | return status; | |
1231 | } | |
1232 | ||
0baab86b EF |
1233 | |
1234 | /** | |
1235 | * ata_wait_idle - Wait for a port to be idle. | |
1236 | * @ap: Port to wait for. | |
1237 | * | |
1238 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1239 | * Returns final value of status register. | |
1240 | * | |
1241 | * LOCKING: | |
1242 | * Inherited from caller. | |
1243 | */ | |
1244 | ||
1da177e4 LT |
1245 | static inline u8 ata_wait_idle(struct ata_port *ap) |
1246 | { | |
1247 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); | |
1248 | ||
15529456 | 1249 | #ifdef ATA_DEBUG |
55f3952d | 1250 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
15529456 TH |
1251 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
1252 | status); | |
1253 | #endif | |
1da177e4 LT |
1254 | |
1255 | return status; | |
1256 | } | |
1257 | ||
1258 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) | |
1259 | { | |
1260 | qc->tf.ctl |= ATA_NIEN; | |
1261 | } | |
1262 | ||
f69499f4 TH |
1263 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1264 | unsigned int tag) | |
1da177e4 LT |
1265 | { |
1266 | if (likely(ata_tag_valid(tag))) | |
1267 | return &ap->qcmd[tag]; | |
1268 | return NULL; | |
1269 | } | |
1270 | ||
f69499f4 TH |
1271 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1272 | unsigned int tag) | |
1273 | { | |
1274 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1275 | ||
1276 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1277 | return qc; | |
1278 | ||
1279 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1280 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1281 | return qc; | |
1282 | ||
1283 | return NULL; | |
1284 | } | |
1285 | ||
3373efd8 | 1286 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1287 | { |
1288 | memset(tf, 0, sizeof(*tf)); | |
1289 | ||
9af5c9c9 | 1290 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1291 | if (dev->devno == 0) |
1da177e4 LT |
1292 | tf->device = ATA_DEVICE_OBS; |
1293 | else | |
1294 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1295 | } | |
1296 | ||
2c13b7ce JG |
1297 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1298 | { | |
501e0c50 | 1299 | qc->dma_dir = DMA_NONE; |
2c13b7ce JG |
1300 | qc->__sg = NULL; |
1301 | qc->flags = 0; | |
87260216 JA |
1302 | qc->cursg = NULL; |
1303 | qc->cursg_ofs = 0; | |
2c13b7ce | 1304 | qc->nbytes = qc->curbytes = 0; |
7a801184 | 1305 | qc->n_elem = 0; |
87260216 | 1306 | qc->n_iter = 0; |
a22e2eb0 | 1307 | qc->err_mask = 0; |
d0f29485 | 1308 | qc->pad_len = 0; |
5a5dbd18 | 1309 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1310 | |
3373efd8 | 1311 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1312 | |
1313 | /* init result_tf such that it indicates normal completion */ | |
1314 | qc->result_tf.command = ATA_DRDY; | |
1315 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1316 | } |
1317 | ||
057ace5e | 1318 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1319 | { |
1320 | return ata_id_wcache_enabled(dev->id) || | |
1321 | ata_id_has_flush(dev->id) || | |
1322 | ata_id_has_flush_ext(dev->id); | |
1323 | } | |
1324 | ||
a7dac447 JG |
1325 | static inline unsigned int ac_err_mask(u8 status) |
1326 | { | |
3655d1d3 | 1327 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1328 | return AC_ERR_HSM; |
a7dac447 JG |
1329 | if (status & (ATA_ERR | ATA_DF)) |
1330 | return AC_ERR_DEV; | |
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | static inline unsigned int __ac_err_mask(u8 status) | |
1335 | { | |
1336 | unsigned int mask = ac_err_mask(status); | |
1337 | if (mask == 0) | |
1338 | return AC_ERR_OTHER; | |
1339 | return mask; | |
1340 | } | |
1341 | ||
6037d6bb JG |
1342 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
1343 | { | |
1344 | ap->pad_dma = 0; | |
f0d36efd TH |
1345 | ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
1346 | &ap->pad_dma, GFP_KERNEL); | |
6037d6bb JG |
1347 | return (ap->pad == NULL) ? -ENOMEM : 0; |
1348 | } | |
1349 | ||
1350 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) | |
1351 | { | |
f0d36efd | 1352 | dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
6037d6bb JG |
1353 | } |
1354 | ||
35bb94b1 JG |
1355 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1356 | { | |
4911487a | 1357 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1358 | } |
1359 | ||
1da177e4 | 1360 | #endif /* __LINUX_LIBATA_H__ */ |