]>
Commit | Line | Data |
---|---|---|
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> |
ceb0c642 | 38 | #include <linux/cdrom.h> |
1da177e4 | 39 | |
a6d967a4 JG |
40 | /* |
41 | * Define if arch has non-standard setup. This is a _PCI_ standard | |
42 | * not a legacy or ISA standard. | |
43 | */ | |
44 | #ifdef CONFIG_ATA_NONSTANDARD | |
2ec7df04 | 45 | #include <asm/libata-portmap.h> |
a6d967a4 JG |
46 | #else |
47 | #include <asm-generic/libata-portmap.h> | |
48 | #endif | |
2ec7df04 | 49 | |
1da177e4 | 50 | /* |
bfd60579 RD |
51 | * compile-time options: to be removed as soon as all the drivers are |
52 | * converted to the new debugging mechanism | |
1da177e4 LT |
53 | */ |
54 | #undef ATA_DEBUG /* debugging output */ | |
55 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
56 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
57 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
58 | |
59 | ||
60 | /* note: prints function name for you */ | |
61 | #ifdef ATA_DEBUG | |
62 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
63 | #ifdef ATA_VERBOSE_DEBUG | |
64 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
65 | #else | |
66 | #define VPRINTK(fmt, args...) | |
67 | #endif /* ATA_VERBOSE_DEBUG */ | |
68 | #else | |
69 | #define DPRINTK(fmt, args...) | |
70 | #define VPRINTK(fmt, args...) | |
71 | #endif /* ATA_DEBUG */ | |
72 | ||
2c13b7ce JG |
73 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
74 | ||
bfd60579 RD |
75 | /* NEW: debug levels */ |
76 | #define HAVE_LIBATA_MSG 1 | |
77 | ||
78 | enum { | |
79 | ATA_MSG_DRV = 0x0001, | |
80 | ATA_MSG_INFO = 0x0002, | |
81 | ATA_MSG_PROBE = 0x0004, | |
82 | ATA_MSG_WARN = 0x0008, | |
83 | ATA_MSG_MALLOC = 0x0010, | |
84 | ATA_MSG_CTL = 0x0020, | |
85 | ATA_MSG_INTR = 0x0040, | |
86 | ATA_MSG_ERR = 0x0080, | |
87 | }; | |
88 | ||
89 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
90 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
91 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
92 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
93 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
94 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
95 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
96 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
97 | ||
98 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
99 | { | |
100 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
101 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
102 | if (!dval) | |
103 | return 0; | |
104 | return (1 << dval) - 1; | |
105 | } | |
106 | ||
1da177e4 LT |
107 | /* defines only for the constants which don't work well as enums */ |
108 | #define ATA_TAG_POISON 0xfafbfcfdU | |
109 | ||
1da177e4 LT |
110 | enum { |
111 | /* various global constants */ | |
112 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 113 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 LT |
114 | ATA_MAX_PORTS = 8, |
115 | ATA_DEF_QUEUE = 1, | |
2ab7db1f | 116 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
a6e6ce8e | 117 | ATA_MAX_QUEUE = 32, |
2ab7db1f | 118 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
1da177e4 LT |
119 | ATA_MAX_BUS = 2, |
120 | ATA_DEF_BUSY_WAIT = 10000, | |
121 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, | |
122 | ||
140b5e59 TH |
123 | ATAPI_MAX_DRAIN = 16 << 10, |
124 | ||
b558eddd TH |
125 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
126 | ||
1da177e4 LT |
127 | ATA_SHT_EMULATED = 1, |
128 | ATA_SHT_CMD_PER_LUN = 1, | |
129 | ATA_SHT_THIS_ID = -1, | |
cf482935 | 130 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 LT |
131 | |
132 | /* struct ata_device stuff */ | |
949b38af TH |
133 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
134 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 135 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 136 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 137 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
138 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
139 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 140 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
ca77329f KCA |
141 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
142 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ | |
91163006 | 143 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
2557164e | 144 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 145 | |
2557164e KCA |
146 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
147 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
148 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ | |
054a5fba | 149 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
00115e0f | 150 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
f20ded38 | 151 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
1da177e4 | 152 | |
f20ded38 TH |
153 | ATA_DFLAG_DETACH = (1 << 24), |
154 | ATA_DFLAG_DETACHED = (1 << 25), | |
abdda733 | 155 | |
1da177e4 LT |
156 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
157 | ATA_DEV_ATA = 1, /* ATA device */ | |
158 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
159 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
160 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
161 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
162 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
163 | ATA_DEV_SEMB = 7, /* SEMB */ | |
164 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
165 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 166 | |
0c88758b | 167 | /* struct ata_link flags */ |
ae791c05 TH |
168 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
169 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
170 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
171 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 172 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 173 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
0c88758b | 174 | |
1da177e4 | 175 | /* struct ata_port flags */ |
949b38af | 176 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 177 | /* (doesn't imply presence) */ |
949b38af TH |
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 */ | |
7395acb2 TH |
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 */ | |
7395acb2 | 189 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 190 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 191 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 192 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 193 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 194 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
ca77329f | 195 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
949b38af | 196 | |
b51e9e5d TH |
197 | /* The following flag belongs to ap->pflags but is kept in |
198 | * ap->flags because it's referenced in many LLDs and will be | |
199 | * removed in not-too-distant future. | |
200 | */ | |
201 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
202 | ||
203 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 204 | |
b51e9e5d TH |
205 | /* struct ata_port pflags */ |
206 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
207 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
208 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
209 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
210 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
211 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ | |
212 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ | |
f4d6d004 | 213 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 214 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
949b38af | 215 | |
b51e9e5d | 216 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 217 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
c05e6ff0 | 218 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
949b38af TH |
219 | |
220 | /* struct ata_queued_cmd flags */ | |
221 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
001102d7 | 222 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
27197367 | 223 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 224 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 225 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e027bd36 | 226 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
03faab78 | 227 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
e61e0672 | 228 | |
9ec957f2 TH |
229 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
230 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
231 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 232 | |
4e5ec5db | 233 | /* host set flags */ |
cca3974e | 234 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 235 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
9bec2e38 | 236 | |
b8b275ef TH |
237 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
238 | ||
1da177e4 | 239 | /* various lengths of time */ |
8d238e01 AC |
240 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
241 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ | |
a2a7a662 TH |
242 | ATA_TMOUT_INTERNAL = 30 * HZ, |
243 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, | |
1da177e4 | 244 | |
88ff6eaf TH |
245 | /* FIXME: GoVault needs 2s but we can't afford that without |
246 | * parallel probing. 800ms is enough for iVDR disk | |
247 | * HHD424020F7SV00. Increase to 2secs when parallel probing | |
248 | * is in place. | |
249 | */ | |
250 | ATA_TMOUT_FF_WAIT = 4 * HZ / 5, | |
251 | ||
1da177e4 LT |
252 | /* ATA bus states */ |
253 | BUS_UNKNOWN = 0, | |
254 | BUS_DMA = 1, | |
255 | BUS_IDLE = 2, | |
256 | BUS_NOINTR = 3, | |
257 | BUS_NODATA = 4, | |
258 | BUS_TIMER = 5, | |
259 | BUS_PIO = 6, | |
260 | BUS_EDD = 7, | |
261 | BUS_IDENTIFY = 8, | |
262 | BUS_PACKET = 9, | |
263 | ||
264 | /* SATA port states */ | |
265 | PORT_UNKNOWN = 0, | |
266 | PORT_ENABLED = 1, | |
267 | PORT_DISABLED = 2, | |
268 | ||
269 | /* encoding various smaller bitmaps into a single | |
7dc951ae | 270 | * unsigned long bitmap |
1da177e4 | 271 | */ |
70cd071e TH |
272 | ATA_NR_PIO_MODES = 7, |
273 | ATA_NR_MWDMA_MODES = 5, | |
274 | ATA_NR_UDMA_MODES = 8, | |
1da7b0d0 TH |
275 | |
276 | ATA_SHIFT_PIO = 0, | |
70cd071e TH |
277 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
278 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, | |
279 | ||
cedc9a47 JG |
280 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
281 | ATA_DMA_PAD_SZ = 4, | |
949b38af | 282 | |
0c247c55 TH |
283 | /* ering size */ |
284 | ATA_ERING_SIZE = 32, | |
285 | ||
31cc23b3 TH |
286 | /* return values for ->qc_defer */ |
287 | ATA_DEFER_LINK = 1, | |
288 | ATA_DEFER_PORT = 2, | |
289 | ||
f3e81b19 TH |
290 | /* desc_len for ata_eh_info and context */ |
291 | ATA_EH_DESC_LEN = 80, | |
292 | ||
9be1e979 TH |
293 | /* reset / recovery action types */ |
294 | ATA_EH_REVALIDATE = (1 << 0), | |
cf480626 TH |
295 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
296 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ | |
297 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
f9df58cb | 298 | ATA_EH_ENABLE_LINK = (1 << 3), |
3ec25ebd | 299 | ATA_EH_LPM = (1 << 4), /* link power management action */ |
9be1e979 | 300 | |
9666f400 | 301 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
9be1e979 | 302 | |
f3e81b19 | 303 | /* ata_eh_info->flags */ |
abdda733 | 304 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
1cdaf534 TH |
305 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
306 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
abdda733 | 307 | |
0d64a233 TH |
308 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
309 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
310 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
311 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
312 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 313 | |
0d64a233 | 314 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d | 315 | |
a1e10f7e TH |
316 | /* max tries if error condition is still set after ->error_handler */ |
317 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 318 | |
14d2bac1 TH |
319 | /* how hard are we gonna try to probe/recover devices */ |
320 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 321 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
322 | ATA_EH_PMP_TRIES = 5, |
323 | ATA_EH_PMP_LINK_TRIES = 3, | |
324 | ||
325 | SATA_PMP_SCR_TIMEOUT = 250, | |
f5914a46 | 326 | |
93590859 AC |
327 | /* Horkage types. May be set by libata or controller on drives |
328 | (some horkage may be drive/controller pair dependant */ | |
329 | ||
330 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
331 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
332 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 333 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 334 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
e31e8531 | 335 | ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ |
93328e11 | 336 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
ca77329f | 337 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
6bbfd53d | 338 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
2d3b8eea | 339 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
b3a70601 | 340 | |
2dcb407e | 341 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
342 | renumber */ |
343 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
344 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
345 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
ceb0c642 TH |
346 | |
347 | /* ATAPI command types */ | |
348 | ATAPI_READ = 0, /* READs */ | |
349 | ATAPI_WRITE = 1, /* WRITEs */ | |
350 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ | |
e52dcc48 TH |
351 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
352 | ATAPI_MISC = 4, /* the rest */ | |
624d5c51 TH |
353 | |
354 | /* Timing constants */ | |
355 | ATA_TIMING_SETUP = (1 << 0), | |
356 | ATA_TIMING_ACT8B = (1 << 1), | |
357 | ATA_TIMING_REC8B = (1 << 2), | |
358 | ATA_TIMING_CYC8B = (1 << 3), | |
359 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
360 | ATA_TIMING_CYC8B, | |
361 | ATA_TIMING_ACTIVE = (1 << 4), | |
362 | ATA_TIMING_RECOVER = (1 << 5), | |
363 | ATA_TIMING_CYCLE = (1 << 6), | |
364 | ATA_TIMING_UDMA = (1 << 7), | |
365 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | | |
366 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
367 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
368 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, | |
1da177e4 LT |
369 | }; |
370 | ||
7dc951ae TH |
371 | enum ata_xfer_mask { |
372 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) | |
373 | << ATA_SHIFT_PIO, | |
374 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) | |
375 | << ATA_SHIFT_MWDMA, | |
376 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) | |
377 | << ATA_SHIFT_UDMA, | |
378 | }; | |
379 | ||
14be71f4 | 380 | enum hsm_task_states { |
c56b14d2 | 381 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
382 | HSM_ST_FIRST, /* (waiting the device to) |
383 | write CDB or first data block */ | |
c56b14d2 AL |
384 | HSM_ST, /* (waiting the device to) transfer data */ |
385 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 386 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
387 | }; |
388 | ||
a7dac447 | 389 | enum ata_completion_errors { |
11a56d24 TH |
390 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
391 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
392 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
393 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
394 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
395 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
396 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
397 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
398 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 399 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 400 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
401 | }; |
402 | ||
1da177e4 LT |
403 | /* forward declarations */ |
404 | struct scsi_device; | |
405 | struct ata_port_operations; | |
406 | struct ata_port; | |
cc0680a5 | 407 | struct ata_link; |
1da177e4 LT |
408 | struct ata_queued_cmd; |
409 | ||
410 | /* typedefs */ | |
77853bf2 | 411 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
412 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
413 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 414 | unsigned long deadline); |
cc0680a5 | 415 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 416 | |
ca77329f KCA |
417 | /* |
418 | * host pm policy: If you alter this, you also need to alter libata-scsi.c | |
419 | * (for the ascii descriptions) | |
420 | */ | |
421 | enum link_pm { | |
422 | NOT_AVAILABLE, | |
423 | MIN_POWER, | |
424 | MAX_PERFORMANCE, | |
425 | MEDIUM_POWER, | |
426 | }; | |
427 | extern struct class_device_attribute class_device_attr_link_power_management_policy; | |
428 | ||
1da177e4 | 429 | struct ata_ioports { |
0d5ff566 TH |
430 | void __iomem *cmd_addr; |
431 | void __iomem *data_addr; | |
432 | void __iomem *error_addr; | |
433 | void __iomem *feature_addr; | |
434 | void __iomem *nsect_addr; | |
435 | void __iomem *lbal_addr; | |
436 | void __iomem *lbam_addr; | |
437 | void __iomem *lbah_addr; | |
438 | void __iomem *device_addr; | |
439 | void __iomem *status_addr; | |
440 | void __iomem *command_addr; | |
441 | void __iomem *altstatus_addr; | |
442 | void __iomem *ctl_addr; | |
443 | void __iomem *bmdma_addr; | |
444 | void __iomem *scr_addr; | |
1da177e4 LT |
445 | }; |
446 | ||
cca3974e | 447 | struct ata_host { |
1da177e4 LT |
448 | spinlock_t lock; |
449 | struct device *dev; | |
0d5ff566 | 450 | void __iomem * const *iomap; |
1da177e4 LT |
451 | unsigned int n_ports; |
452 | void *private_data; | |
029cfd6b | 453 | struct ata_port_operations *ops; |
5444a6f4 | 454 | unsigned long flags; |
fafbae87 TH |
455 | #ifdef CONFIG_ATA_ACPI |
456 | acpi_handle acpi_handle; | |
457 | #endif | |
032af1ce | 458 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 459 | struct ata_port *ports[0]; |
1da177e4 LT |
460 | }; |
461 | ||
462 | struct ata_queued_cmd { | |
463 | struct ata_port *ap; | |
464 | struct ata_device *dev; | |
465 | ||
466 | struct scsi_cmnd *scsicmd; | |
467 | void (*scsidone)(struct scsi_cmnd *); | |
468 | ||
469 | struct ata_taskfile tf; | |
470 | u8 cdb[ATAPI_CDB_LEN]; | |
471 | ||
472 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
473 | unsigned int tag; | |
474 | unsigned int n_elem; | |
475 | ||
476 | int dma_dir; | |
477 | ||
5a5dbd18 | 478 | unsigned int sect_size; |
cedc9a47 | 479 | |
1da177e4 | 480 | unsigned int nbytes; |
aacda375 | 481 | unsigned int extrabytes; |
1da177e4 LT |
482 | unsigned int curbytes; |
483 | ||
87260216 | 484 | struct scatterlist *cursg; |
1da177e4 LT |
485 | unsigned int cursg_ofs; |
486 | ||
487 | struct scatterlist sgent; | |
1da177e4 | 488 | |
ff2aeb1e | 489 | struct scatterlist *sg; |
1da177e4 | 490 | |
a22e2eb0 | 491 | unsigned int err_mask; |
e61e0672 | 492 | struct ata_taskfile result_tf; |
1da177e4 LT |
493 | ata_qc_cb_t complete_fn; |
494 | ||
1da177e4 | 495 | void *private_data; |
1c50dc83 | 496 | void *lldd_task; |
1da177e4 LT |
497 | }; |
498 | ||
cca3974e | 499 | struct ata_port_stats { |
1da177e4 LT |
500 | unsigned long unhandled_irq; |
501 | unsigned long idle_irq; | |
502 | unsigned long rw_reqbuf; | |
503 | }; | |
504 | ||
0c247c55 | 505 | struct ata_ering_entry { |
3884f7b0 | 506 | unsigned int eflags; |
0c247c55 TH |
507 | unsigned int err_mask; |
508 | u64 timestamp; | |
509 | }; | |
510 | ||
511 | struct ata_ering { | |
512 | int cursor; | |
513 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
514 | }; | |
515 | ||
1da177e4 | 516 | struct ata_device { |
9af5c9c9 | 517 | struct ata_link *link; |
72fa4b74 | 518 | unsigned int devno; /* 0 or 1 */ |
1da177e4 | 519 | unsigned long flags; /* ATA_DFLAG_xxx */ |
75683fe7 | 520 | unsigned int horkage; /* List of broken features */ |
3edebac4 | 521 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
522 | #ifdef CONFIG_ATA_ACPI |
523 | acpi_handle acpi_handle; | |
398e0782 | 524 | union acpi_object *gtf_cache; |
fafbae87 | 525 | #endif |
72fa4b74 TH |
526 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
527 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 528 | unsigned int class; /* ATA_DEV_xxx */ |
e0a71752 TH |
529 | |
530 | union { | |
531 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
532 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
533 | }; | |
534 | ||
1da177e4 LT |
535 | u8 pio_mode; |
536 | u8 dma_mode; | |
537 | u8 xfer_mode; | |
538 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
539 | ||
8cbd6df1 AL |
540 | unsigned int multi_count; /* sectors count for |
541 | READ/WRITE MULTIPLE */ | |
b00eec1d | 542 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 543 | unsigned int cdb_len; |
8bf62ece | 544 | |
acf356b1 | 545 | /* per-dev xfer mask */ |
7dc951ae TH |
546 | unsigned long pio_mask; |
547 | unsigned long mwdma_mask; | |
548 | unsigned long udma_mask; | |
acf356b1 | 549 | |
8bf62ece AL |
550 | /* for CHS addressing */ |
551 | u16 cylinders; /* Number of cylinders */ | |
552 | u16 heads; /* Number of heads */ | |
553 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
554 | |
555 | /* error history */ | |
556 | struct ata_ering ering; | |
7d47e8d4 | 557 | int spdn_cnt; |
1da177e4 LT |
558 | }; |
559 | ||
72fa4b74 TH |
560 | /* Offset into struct ata_device. Fields above it are maintained |
561 | * acress device init. Fields below are zeroed. | |
562 | */ | |
563 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
564 | ||
f3e81b19 TH |
565 | struct ata_eh_info { |
566 | struct ata_device *dev; /* offending device */ | |
567 | u32 serror; /* SError from LLDD */ | |
568 | unsigned int err_mask; /* port-wide err_mask */ | |
569 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 570 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 571 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 572 | |
abdda733 TH |
573 | unsigned int probe_mask; |
574 | ||
f3e81b19 TH |
575 | char desc[ATA_EH_DESC_LEN]; |
576 | int desc_len; | |
577 | }; | |
578 | ||
579 | struct ata_eh_context { | |
580 | struct ata_eh_info i; | |
581 | int tries[ATA_MAX_DEVICES]; | |
abdda733 TH |
582 | unsigned int classes[ATA_MAX_DEVICES]; |
583 | unsigned int did_probe_mask; | |
00115e0f TH |
584 | unsigned int saved_ncq_enabled; |
585 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; | |
f3e81b19 TH |
586 | }; |
587 | ||
64578a3d TH |
588 | struct ata_acpi_drive |
589 | { | |
590 | u32 pio; | |
591 | u32 dma; | |
592 | } __packed; | |
593 | ||
594 | struct ata_acpi_gtm { | |
595 | struct ata_acpi_drive drive[2]; | |
596 | u32 flags; | |
597 | } __packed; | |
598 | ||
9af5c9c9 TH |
599 | struct ata_link { |
600 | struct ata_port *ap; | |
8989805d | 601 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
602 | |
603 | unsigned int active_tag; /* active tag on this link */ | |
604 | u32 sactive; /* active NCQ commands */ | |
605 | ||
0c88758b TH |
606 | unsigned int flags; /* ATA_LFLAG_xxx */ |
607 | ||
9af5c9c9 TH |
608 | unsigned int hw_sata_spd_limit; |
609 | unsigned int sata_spd_limit; | |
610 | unsigned int sata_spd; /* current SATA PHY speed */ | |
611 | ||
612 | /* record runtime error info, protected by host_set lock */ | |
613 | struct ata_eh_info eh_info; | |
614 | /* EH context */ | |
615 | struct ata_eh_context eh_context; | |
616 | ||
617 | struct ata_device device[ATA_MAX_DEVICES]; | |
618 | }; | |
619 | ||
1da177e4 | 620 | struct ata_port { |
cca3974e | 621 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
029cfd6b | 622 | struct ata_port_operations *ops; |
ba6a1308 | 623 | spinlock_t *lock; |
1da177e4 | 624 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 625 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
626 | unsigned int print_id; /* user visible unique port ID */ |
627 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
628 | |
629 | struct ata_prd *prd; /* our SG list */ | |
630 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
631 | ||
632 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ | |
633 | ||
634 | u8 ctl; /* cache of ATA control register */ | |
635 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
636 | unsigned int pio_mask; |
637 | unsigned int mwdma_mask; | |
638 | unsigned int udma_mask; | |
639 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
640 | |
641 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
6cec4a39 | 642 | unsigned long qc_allocated; |
dedaf2b0 | 643 | unsigned int qc_active; |
da917d69 | 644 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 645 | |
9af5c9c9 | 646 | struct ata_link link; /* host default link */ |
1da177e4 | 647 | |
8989805d TH |
648 | int nr_pmp_links; /* nr of available PMP links */ |
649 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 650 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 651 | |
cca3974e JG |
652 | struct ata_port_stats stats; |
653 | struct ata_host *host; | |
2f1f610b | 654 | struct device *dev; |
1da177e4 | 655 | |
65f27f38 | 656 | void *port_task_data; |
52bad64d DH |
657 | struct delayed_work port_task; |
658 | struct delayed_work hotplug_task; | |
3b01b8af | 659 | struct work_struct scsi_rescan_task; |
86e45b6b | 660 | |
14be71f4 | 661 | unsigned int hsm_task_state; |
1da177e4 | 662 | |
bfd60579 | 663 | u32 msg_enable; |
a72ec4ce | 664 | struct list_head eh_done_q; |
c6cf9e99 | 665 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 666 | int eh_tries; |
bfd60579 | 667 | |
500530f6 TH |
668 | pm_message_t pm_mesg; |
669 | int *pm_result; | |
ca77329f | 670 | enum link_pm pm_policy; |
500530f6 | 671 | |
5ddf24c5 TH |
672 | struct timer_list fastdrain_timer; |
673 | unsigned long fastdrain_cnt; | |
674 | ||
1da177e4 | 675 | void *private_data; |
fe635c7e | 676 | |
fafbae87 TH |
677 | #ifdef CONFIG_ATA_ACPI |
678 | acpi_handle acpi_handle; | |
c05e6ff0 | 679 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
fafbae87 | 680 | #endif |
fe635c7e | 681 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
682 | }; |
683 | ||
029cfd6b TH |
684 | /* The following initializer overrides a method to NULL whether one of |
685 | * its parent has the method defined or not. This is equivalent to | |
686 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant | |
687 | * expression and thus can't be used as an initializer. | |
688 | */ | |
689 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) | |
690 | ||
1da177e4 | 691 | struct ata_port_operations { |
c1bc899f TH |
692 | /* |
693 | * Command execution | |
694 | */ | |
695 | int (*qc_defer)(struct ata_queued_cmd *qc); | |
696 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); | |
697 | void (*qc_prep)(struct ata_queued_cmd *qc); | |
698 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); | |
1da177e4 | 699 | |
c1bc899f TH |
700 | /* |
701 | * Configuration and exception handling | |
702 | */ | |
703 | int (*cable_detect)(struct ata_port *ap); | |
704 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); | |
705 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); | |
706 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); | |
707 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); | |
1da177e4 | 708 | |
c1bc899f | 709 | void (*dev_config)(struct ata_device *dev); |
1da177e4 | 710 | |
c1bc899f TH |
711 | void (*freeze)(struct ata_port *ap); |
712 | void (*thaw)(struct ata_port *ap); | |
a1efdaba TH |
713 | ata_prereset_fn_t prereset; |
714 | ata_reset_fn_t softreset; | |
715 | ata_reset_fn_t hardreset; | |
716 | ata_postreset_fn_t postreset; | |
717 | ata_prereset_fn_t pmp_prereset; | |
718 | ata_reset_fn_t pmp_softreset; | |
719 | ata_reset_fn_t pmp_hardreset; | |
720 | ata_postreset_fn_t pmp_postreset; | |
c1bc899f TH |
721 | void (*error_handler)(struct ata_port *ap); |
722 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); | |
723 | ||
724 | /* | |
725 | * Optional features | |
726 | */ | |
727 | int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val); | |
728 | int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val); | |
729 | void (*pmp_attach)(struct ata_port *ap); | |
730 | void (*pmp_detach)(struct ata_port *ap); | |
731 | int (*enable_pm)(struct ata_port *ap, enum link_pm policy); | |
732 | void (*disable_pm)(struct ata_port *ap); | |
733 | ||
734 | /* | |
735 | * Start, stop, suspend and resume | |
736 | */ | |
737 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); | |
738 | int (*port_resume)(struct ata_port *ap); | |
739 | int (*port_start)(struct ata_port *ap); | |
740 | void (*port_stop)(struct ata_port *ap); | |
741 | void (*host_stop)(struct ata_host *host); | |
742 | ||
743 | /* | |
744 | * SFF / taskfile oriented ops | |
745 | */ | |
5682ed33 TH |
746 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
747 | u8 (*sff_check_status)(struct ata_port *ap); | |
748 | u8 (*sff_check_altstatus)(struct ata_port *ap); | |
749 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); | |
750 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); | |
751 | void (*sff_exec_command)(struct ata_port *ap, | |
752 | const struct ata_taskfile *tf); | |
753 | unsigned int (*sff_data_xfer)(struct ata_device *dev, | |
754 | unsigned char *buf, unsigned int buflen, int rw); | |
755 | u8 (*sff_irq_on)(struct ata_port *); | |
756 | void (*sff_irq_clear)(struct ata_port *); | |
757 | ||
c1bc899f TH |
758 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
759 | void (*bmdma_start)(struct ata_queued_cmd *qc); | |
760 | void (*bmdma_stop)(struct ata_queued_cmd *qc); | |
761 | u8 (*bmdma_status)(struct ata_port *ap); | |
762 | ||
763 | /* | |
764 | * Obsolete | |
9ec957f2 | 765 | */ |
c1bc899f TH |
766 | void (*phy_reset)(struct ata_port *ap); |
767 | void (*eng_timeout)(struct ata_port *ap); | |
029cfd6b TH |
768 | |
769 | /* | |
770 | * ->inherits must be the last field and all the preceding | |
771 | * fields must be pointers. | |
772 | */ | |
773 | const struct ata_port_operations *inherits; | |
1da177e4 LT |
774 | }; |
775 | ||
776 | struct ata_port_info { | |
cca3974e | 777 | unsigned long flags; |
0c88758b | 778 | unsigned long link_flags; |
1da177e4 LT |
779 | unsigned long pio_mask; |
780 | unsigned long mwdma_mask; | |
781 | unsigned long udma_mask; | |
029cfd6b | 782 | struct ata_port_operations *port_ops; |
e99f8b5e | 783 | void *private_data; |
1da177e4 LT |
784 | }; |
785 | ||
452503f9 AC |
786 | struct ata_timing { |
787 | unsigned short mode; /* ATA mode */ | |
788 | unsigned short setup; /* t1 */ | |
789 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
790 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
791 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
792 | unsigned short active; /* t2 or tD */ | |
793 | unsigned short recover; /* t2i or tK */ | |
794 | unsigned short cycle; /* t0 */ | |
795 | unsigned short udma; /* t2CYCTYP/2 */ | |
796 | }; | |
797 | ||
2dcb407e | 798 | #define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin) |
1da177e4 | 799 | |
624d5c51 TH |
800 | /* |
801 | * Core layer - drivers/ata/libata-core.c | |
802 | */ | |
e9c83914 TH |
803 | extern const unsigned long sata_deb_timing_normal[]; |
804 | extern const unsigned long sata_deb_timing_hotplug[]; | |
805 | extern const unsigned long sata_deb_timing_long[]; | |
806 | ||
029cfd6b | 807 | extern struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 808 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 809 | |
e9c83914 TH |
810 | static inline const unsigned long * |
811 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
812 | { | |
813 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
814 | return sata_deb_timing_hotplug; | |
815 | else | |
816 | return sata_deb_timing_normal; | |
817 | } | |
d7bb4cc7 | 818 | |
dd5b06c4 TH |
819 | static inline int ata_port_is_dummy(struct ata_port *ap) |
820 | { | |
821 | return ap->ops == &ata_dummy_port_ops; | |
822 | } | |
823 | ||
936fd732 | 824 | extern void sata_print_link_status(struct ata_link *link); |
1da177e4 | 825 | extern void ata_port_probe(struct ata_port *); |
936fd732 | 826 | extern int sata_set_spd(struct ata_link *link); |
0aa1113d | 827 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
936fd732 TH |
828 | extern int sata_link_debounce(struct ata_link *link, |
829 | const unsigned long *params, unsigned long deadline); | |
830 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
831 | unsigned long deadline); | |
cc0680a5 TH |
832 | extern int sata_link_hardreset(struct ata_link *link, |
833 | const unsigned long *timing, unsigned long deadline); | |
203c75b8 | 834 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 | 835 | extern void ata_port_disable(struct ata_port *); |
2855568b | 836 | |
f3187195 | 837 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
838 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
839 | const struct ata_port_info * const * ppi, int n_ports); | |
ecef7253 | 840 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
841 | extern int ata_host_register(struct ata_host *host, |
842 | struct scsi_host_template *sht); | |
f5cda257 TH |
843 | extern int ata_host_activate(struct ata_host *host, int irq, |
844 | irq_handler_t irq_handler, unsigned long irq_flags, | |
845 | struct scsi_host_template *sht); | |
0529c159 | 846 | extern void ata_host_detach(struct ata_host *host); |
cca3974e | 847 | extern void ata_host_init(struct ata_host *, struct device *, |
029cfd6b | 848 | unsigned long, struct ata_port_operations *); |
193515d5 | 849 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
850 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
851 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
80289167 | 852 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 853 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
854 | struct ata_port_info *, struct Scsi_Host *); |
855 | extern int ata_sas_port_init(struct ata_port *); | |
856 | extern int ata_sas_port_start(struct ata_port *ap); | |
857 | extern void ata_sas_port_stop(struct ata_port *ap); | |
858 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
859 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
860 | struct ata_port *ap); | |
936fd732 TH |
861 | extern int sata_scr_valid(struct ata_link *link); |
862 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
863 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
864 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
865 | extern int ata_link_online(struct ata_link *link); | |
866 | extern int ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 867 | #ifdef CONFIG_PM |
cca3974e JG |
868 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
869 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 870 | #endif |
67846b30 | 871 | extern int ata_ratelimit(void); |
c22daff4 TH |
872 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
873 | unsigned long interval_msec, | |
874 | unsigned long timeout_msec); | |
436d34b3 | 875 | extern int atapi_cmd_type(u8 opcode); |
9977126c TH |
876 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
877 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 878 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
7dc951ae TH |
879 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
880 | unsigned long mwdma_mask, unsigned long udma_mask); | |
881 | extern void ata_unpack_xfermask(unsigned long xfer_mask, | |
882 | unsigned long *pio_mask, unsigned long *mwdma_mask, | |
883 | unsigned long *udma_mask); | |
884 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); | |
885 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); | |
886 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); | |
887 | extern const char *ata_mode_string(unsigned long xfer_mask); | |
888 | extern unsigned long ata_id_xfermask(const u16 *id); | |
2dcb407e | 889 | extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device); |
2dcb407e | 890 | extern int ata_port_start(struct ata_port *ap); |
31cc23b3 | 891 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
e46834cd | 892 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 LT |
893 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
894 | unsigned int n_elem); | |
057ace5e | 895 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 896 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
897 | extern void ata_id_string(const u16 *id, unsigned char *s, |
898 | unsigned int ofs, unsigned int len); | |
899 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
900 | unsigned int ofs, unsigned int len); | |
f686bcb8 | 901 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
dedaf2b0 TH |
902 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
903 | void (*finish_qc)(struct ata_queued_cmd *)); | |
3373efd8 | 904 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
905 | void (*done)(struct scsi_cmnd *)); |
906 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
907 | struct block_device *bdev, | |
908 | sector_t capacity, int geom[]); | |
909 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 910 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
911 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
912 | int queue_depth); | |
3373efd8 | 913 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 914 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
1da177e4 | 915 | |
be0d18df AC |
916 | extern int ata_cable_40wire(struct ata_port *ap); |
917 | extern int ata_cable_80wire(struct ata_port *ap); | |
918 | extern int ata_cable_sata(struct ata_port *ap); | |
c88f90c3 | 919 | extern int ata_cable_ignore(struct ata_port *ap); |
be0d18df AC |
920 | extern int ata_cable_unknown(struct ata_port *ap); |
921 | ||
624d5c51 | 922 | /* Timing helpers */ |
1bc4ccff | 923 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
6357357c | 924 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
452503f9 AC |
925 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
926 | struct ata_timing *, int, int); | |
927 | extern void ata_timing_merge(const struct ata_timing *, | |
928 | const struct ata_timing *, struct ata_timing *, | |
929 | unsigned int); | |
a0f79b92 | 930 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
452503f9 | 931 | |
624d5c51 TH |
932 | /* PCI */ |
933 | #ifdef CONFIG_PCI | |
934 | struct pci_dev; | |
935 | ||
936 | struct pci_bits { | |
937 | unsigned int reg; /* PCI config register to read */ | |
938 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
939 | unsigned long mask; | |
940 | unsigned long val; | |
452503f9 AC |
941 | }; |
942 | ||
624d5c51 TH |
943 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
944 | extern void ata_pci_remove_one(struct pci_dev *pdev); | |
945 | ||
946 | #ifdef CONFIG_PM | |
947 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
948 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
949 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
950 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
951 | #endif /* CONFIG_PM */ | |
952 | #endif /* CONFIG_PCI */ | |
953 | ||
954 | /* | |
955 | * ACPI - drivers/ata/libata-acpi.c | |
956 | */ | |
e1ddb4b6 | 957 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 TH |
958 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
959 | { | |
960 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) | |
961 | return &ap->__acpi_init_gtm; | |
962 | return NULL; | |
963 | } | |
0d02f0b2 TH |
964 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
965 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); | |
7c77fa4d TH |
966 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
967 | const struct ata_acpi_gtm *gtm); | |
021ee9a6 | 968 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
e1ddb4b6 | 969 | #else |
c05e6ff0 TH |
970 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
971 | { | |
972 | return NULL; | |
973 | } | |
7c77fa4d TH |
974 | |
975 | static inline int ata_acpi_stm(const struct ata_port *ap, | |
976 | struct ata_acpi_gtm *stm) | |
977 | { | |
978 | return -ENOSYS; | |
979 | } | |
980 | ||
981 | static inline int ata_acpi_gtm(const struct ata_port *ap, | |
982 | struct ata_acpi_gtm *stm) | |
983 | { | |
984 | return -ENOSYS; | |
985 | } | |
986 | ||
987 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, | |
988 | const struct ata_acpi_gtm *gtm) | |
989 | { | |
990 | return 0; | |
991 | } | |
021ee9a6 TH |
992 | |
993 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, | |
994 | const struct ata_acpi_gtm *gtm) | |
995 | { | |
996 | return 0; | |
997 | } | |
e1ddb4b6 | 998 | #endif |
1da177e4 | 999 | |
3af9a77a | 1000 | /* |
624d5c51 | 1001 | * PMP - drivers/ata/libata-pmp.c |
3af9a77a | 1002 | */ |
31f88384 | 1003 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
3af9a77a TH |
1004 | extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline); |
1005 | extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class, | |
1006 | unsigned long deadline); | |
1007 | extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class); | |
a1efdaba | 1008 | extern void sata_pmp_error_handler(struct ata_port *ap); |
3af9a77a | 1009 | |
ece1d636 | 1010 | /* |
624d5c51 | 1011 | * EH - drivers/ata/libata-eh.c |
ece1d636 | 1012 | */ |
7b70fc03 | 1013 | extern void ata_port_schedule_eh(struct ata_port *ap); |
dbd82616 | 1014 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1015 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1016 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1017 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1018 | |
1019 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1020 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1021 | |
ece1d636 TH |
1022 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1023 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
1024 | ||
f5914a46 TH |
1025 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1026 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1027 | ata_postreset_fn_t postreset); | |
a1efdaba | 1028 | extern void ata_std_error_handler(struct ata_port *ap); |
022bdb07 | 1029 | |
68d1d07b TH |
1030 | /* |
1031 | * Base operations to inherit from and initializers for sht | |
1032 | * | |
1033 | * Operations | |
1034 | * | |
1035 | * base : Common to all libata drivers. | |
1036 | * sata : SATA controllers w/ native interface. | |
1037 | * pmp : SATA controllers w/ PMP support. | |
1038 | * sff : SFF ATA controllers w/o BMDMA support. | |
1039 | * bmdma : SFF ATA controllers w/ BMDMA support. | |
1040 | * | |
1041 | * sht initializers | |
1042 | * | |
1043 | * BASE : Common to all libata drivers. The user must set | |
1044 | * sg_tablesize and dma_boundary. | |
1045 | * PIO : SFF ATA controllers w/ only PIO support. | |
1046 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and | |
1047 | * dma_boundary are set to BMDMA limits. | |
1048 | * NCQ : SATA controllers supporting NCQ. The user must set | |
1049 | * sg_tablesize, dma_boundary and can_queue. | |
1050 | */ | |
1051 | extern const struct ata_port_operations ata_base_port_ops; | |
1052 | extern const struct ata_port_operations sata_port_ops; | |
1053 | extern const struct ata_port_operations sata_pmp_port_ops; | |
68d1d07b TH |
1054 | |
1055 | #define ATA_BASE_SHT(drv_name) \ | |
1056 | .module = THIS_MODULE, \ | |
1057 | .name = drv_name, \ | |
1058 | .ioctl = ata_scsi_ioctl, \ | |
1059 | .queuecommand = ata_scsi_queuecmd, \ | |
1060 | .can_queue = ATA_DEF_QUEUE, \ | |
1061 | .this_id = ATA_SHT_THIS_ID, \ | |
1062 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ | |
1063 | .emulated = ATA_SHT_EMULATED, \ | |
1064 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ | |
1065 | .proc_name = drv_name, \ | |
1066 | .slave_configure = ata_scsi_slave_config, \ | |
1067 | .slave_destroy = ata_scsi_slave_destroy, \ | |
1068 | .bios_param = ata_std_bios_param | |
1069 | ||
68d1d07b TH |
1070 | #define ATA_NCQ_SHT(drv_name) \ |
1071 | ATA_BASE_SHT(drv_name), \ | |
1072 | .change_queue_depth = ata_scsi_change_queue_depth | |
1073 | ||
61440db6 TH |
1074 | /* |
1075 | * printk helpers | |
1076 | */ | |
1077 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
c2e366a1 | 1078 | printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) |
61440db6 | 1079 | |
8989805d TH |
1080 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
1081 | if ((link)->ap->nr_pmp_links) \ | |
c2e366a1 | 1082 | printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ |
8989805d TH |
1083 | (link)->pmp , ##args); \ |
1084 | else \ | |
c2e366a1 | 1085 | printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ |
8989805d | 1086 | } while(0) |
9af5c9c9 | 1087 | |
61440db6 | 1088 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
c2e366a1 | 1089 | printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ |
8989805d | 1090 | (dev)->link->pmp + (dev)->devno , ##args) |
1da177e4 | 1091 | |
f3e81b19 TH |
1092 | /* |
1093 | * ata_eh_info helpers | |
1094 | */ | |
cb94c1cf TH |
1095 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1096 | __attribute__ ((format (printf, 2, 3))); | |
1097 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1098 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1099 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1100 | |
c0b6c037 TH |
1101 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1102 | { | |
b558eddd | 1103 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
f8f1e1cc | 1104 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
b558eddd | 1105 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1106 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1107 | } | |
1108 | ||
cbcdd875 TH |
1109 | /* |
1110 | * port description helpers | |
1111 | */ | |
1112 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1113 | __attribute__ ((format (printf, 2, 3))); | |
1114 | #ifdef CONFIG_PCI | |
1115 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1116 | const char *name); | |
1117 | #endif | |
1118 | ||
1da177e4 LT |
1119 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1120 | { | |
1121 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1122 | } | |
1123 | ||
2ab7db1f TH |
1124 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1125 | { | |
83c063dd | 1126 | return tag == ATA_TAG_INTERNAL; |
2ab7db1f TH |
1127 | } |
1128 | ||
5806db22 TH |
1129 | /* |
1130 | * device helpers | |
1131 | */ | |
e1211e3f | 1132 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1133 | { |
e0a71752 TH |
1134 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1135 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1136 | } |
1137 | ||
e1211e3f | 1138 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1139 | { |
e0a71752 TH |
1140 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1141 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1142 | } |
1143 | ||
002c8054 TH |
1144 | static inline unsigned int ata_class_absent(unsigned int class) |
1145 | { | |
1146 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1147 | } | |
1148 | ||
e1211e3f TH |
1149 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1150 | { | |
1151 | return ata_class_enabled(dev->class); | |
1152 | } | |
1153 | ||
1154 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1155 | { | |
1156 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1157 | } |
1158 | ||
002c8054 TH |
1159 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1160 | { | |
1161 | return ata_class_absent(dev->class); | |
1162 | } | |
1163 | ||
5806db22 | 1164 | /* |
f58229f8 | 1165 | * link helpers |
5806db22 | 1166 | */ |
8989805d TH |
1167 | static inline int ata_is_host_link(const struct ata_link *link) |
1168 | { | |
1169 | return link == &link->ap->link; | |
1170 | } | |
1171 | ||
f58229f8 | 1172 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1173 | { |
8989805d | 1174 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1175 | return 2; |
1176 | return 1; | |
1177 | } | |
1178 | ||
da917d69 TH |
1179 | static inline int ata_link_active(struct ata_link *link) |
1180 | { | |
1181 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1182 | } | |
1183 | ||
8989805d TH |
1184 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
1185 | { | |
1186 | if (ap->nr_pmp_links) | |
1187 | return ap->pmp_link; | |
1188 | return &ap->link; | |
1189 | } | |
1190 | ||
1191 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) | |
1192 | { | |
1193 | struct ata_port *ap = link->ap; | |
1194 | ||
1195 | if (link == &ap->link) { | |
1196 | if (!ap->nr_pmp_links) | |
1197 | return NULL; | |
1198 | return ap->pmp_link; | |
1199 | } | |
1200 | ||
5d44b414 | 1201 | if (++link < ap->nr_pmp_links + ap->pmp_link) |
8989805d TH |
1202 | return link; |
1203 | return NULL; | |
1204 | } | |
1205 | ||
1206 | #define __ata_port_for_each_link(lk, ap) \ | |
1207 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) | |
1208 | ||
1209 | #define ata_port_for_each_link(link, ap) \ | |
1210 | for ((link) = ata_port_first_link(ap); (link); \ | |
1211 | (link) = ata_port_next_link(link)) | |
f58229f8 TH |
1212 | |
1213 | #define ata_link_for_each_dev(dev, link) \ | |
1214 | for ((dev) = (link)->device; \ | |
1215 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ | |
1216 | (dev)++) | |
1217 | ||
1218 | #define ata_link_for_each_dev_reverse(dev, link) \ | |
1219 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ | |
1220 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) | |
5806db22 | 1221 | |
6d1245bf TH |
1222 | /** |
1223 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1224 | * @dev: ATA device to test for | |
1225 | * | |
1226 | * LOCKING: | |
1227 | * spin_lock_irqsave(host lock) | |
1228 | * | |
1229 | * RETURNS: | |
1230 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1231 | */ | |
1232 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1233 | { | |
1234 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1235 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1236 | } | |
0baab86b | 1237 | |
1da177e4 LT |
1238 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1239 | { | |
1240 | qc->tf.ctl |= ATA_NIEN; | |
1241 | } | |
1242 | ||
f69499f4 TH |
1243 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1244 | unsigned int tag) | |
1da177e4 LT |
1245 | { |
1246 | if (likely(ata_tag_valid(tag))) | |
1247 | return &ap->qcmd[tag]; | |
1248 | return NULL; | |
1249 | } | |
1250 | ||
f69499f4 TH |
1251 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1252 | unsigned int tag) | |
1253 | { | |
1254 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1255 | ||
1256 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1257 | return qc; | |
1258 | ||
1259 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1260 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1261 | return qc; | |
1262 | ||
1263 | return NULL; | |
1264 | } | |
1265 | ||
aacda375 TH |
1266 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1267 | { | |
1268 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); | |
1269 | } | |
1270 | ||
3373efd8 | 1271 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1272 | { |
1273 | memset(tf, 0, sizeof(*tf)); | |
1274 | ||
9af5c9c9 | 1275 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1276 | if (dev->devno == 0) |
1da177e4 LT |
1277 | tf->device = ATA_DEVICE_OBS; |
1278 | else | |
1279 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1280 | } | |
1281 | ||
2c13b7ce JG |
1282 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1283 | { | |
501e0c50 | 1284 | qc->dma_dir = DMA_NONE; |
ff2aeb1e | 1285 | qc->sg = NULL; |
2c13b7ce | 1286 | qc->flags = 0; |
87260216 JA |
1287 | qc->cursg = NULL; |
1288 | qc->cursg_ofs = 0; | |
aacda375 | 1289 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
7a801184 | 1290 | qc->n_elem = 0; |
a22e2eb0 | 1291 | qc->err_mask = 0; |
5a5dbd18 | 1292 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1293 | |
3373efd8 | 1294 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1295 | |
1296 | /* init result_tf such that it indicates normal completion */ | |
1297 | qc->result_tf.command = ATA_DRDY; | |
1298 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1299 | } |
1300 | ||
057ace5e | 1301 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1302 | { |
1303 | return ata_id_wcache_enabled(dev->id) || | |
1304 | ata_id_has_flush(dev->id) || | |
1305 | ata_id_has_flush_ext(dev->id); | |
1306 | } | |
1307 | ||
a7dac447 JG |
1308 | static inline unsigned int ac_err_mask(u8 status) |
1309 | { | |
3655d1d3 | 1310 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1311 | return AC_ERR_HSM; |
a7dac447 JG |
1312 | if (status & (ATA_ERR | ATA_DF)) |
1313 | return AC_ERR_DEV; | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | static inline unsigned int __ac_err_mask(u8 status) | |
1318 | { | |
1319 | unsigned int mask = ac_err_mask(status); | |
1320 | if (mask == 0) | |
1321 | return AC_ERR_OTHER; | |
1322 | return mask; | |
1323 | } | |
1324 | ||
35bb94b1 JG |
1325 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1326 | { | |
4911487a | 1327 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1328 | } |
1329 | ||
624d5c51 TH |
1330 | /************************************************************************** |
1331 | * SFF - drivers/ata/libata-sff.c | |
1332 | */ | |
1333 | extern const struct ata_port_operations ata_sff_port_ops; | |
1334 | extern const struct ata_port_operations ata_bmdma_port_ops; | |
1335 | ||
1336 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ | |
1337 | #define ATA_PIO_SHT(drv_name) \ | |
1338 | ATA_BASE_SHT(drv_name), \ | |
1339 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1340 | .dma_boundary = ATA_DMA_BOUNDARY | |
1341 | ||
1342 | #define ATA_BMDMA_SHT(drv_name) \ | |
1343 | ATA_BASE_SHT(drv_name), \ | |
1344 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1345 | .dma_boundary = ATA_DMA_BOUNDARY | |
1346 | ||
9363c382 TH |
1347 | extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); |
1348 | extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); | |
1349 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); | |
1350 | extern u8 ata_sff_check_status(struct ata_port *ap); | |
1351 | extern u8 ata_sff_altstatus(struct ata_port *ap); | |
1352 | extern int ata_sff_busy_sleep(struct ata_port *ap, | |
1353 | unsigned long timeout_pat, unsigned long timeout); | |
1354 | extern int ata_sff_wait_ready(struct ata_port *ap, unsigned long deadline); | |
1355 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); | |
1356 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); | |
1357 | extern void ata_sff_exec_command(struct ata_port *ap, | |
1358 | const struct ata_taskfile *tf); | |
1359 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, | |
624d5c51 | 1360 | unsigned char *buf, unsigned int buflen, int rw); |
9363c382 | 1361 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
624d5c51 | 1362 | unsigned char *buf, unsigned int buflen, int rw); |
9363c382 TH |
1363 | extern u8 ata_sff_irq_on(struct ata_port *ap); |
1364 | extern void ata_sff_irq_clear(struct ata_port *ap); | |
1365 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, | |
1366 | u8 status, int in_wq); | |
1367 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); | |
1368 | extern unsigned int ata_sff_host_intr(struct ata_port *ap, | |
1369 | struct ata_queued_cmd *qc); | |
1370 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); | |
1371 | extern void ata_sff_freeze(struct ata_port *ap); | |
1372 | extern void ata_sff_thaw(struct ata_port *ap); | |
1373 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); | |
1374 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, | |
1375 | u8 *r_err); | |
1376 | extern void ata_sff_wait_after_reset(struct ata_port *ap, | |
1377 | unsigned long deadline); | |
1378 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, | |
624d5c51 | 1379 | unsigned long deadline); |
9363c382 TH |
1380 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1381 | unsigned long deadline); | |
1382 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); | |
1383 | extern void ata_sff_error_handler(struct ata_port *ap); | |
1384 | extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); | |
624d5c51 | 1385 | extern int ata_sff_port_start(struct ata_port *ap); |
9363c382 TH |
1386 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
1387 | extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, | |
1388 | unsigned long xfer_mask); | |
624d5c51 TH |
1389 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1390 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
1391 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); | |
1392 | extern u8 ata_bmdma_status(struct ata_port *ap); | |
1393 | extern void ata_bus_reset(struct ata_port *ap); | |
1394 | ||
1395 | #ifdef CONFIG_PCI | |
9363c382 TH |
1396 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
1397 | extern int ata_pci_bmdma_init(struct ata_host *host); | |
1398 | extern int ata_pci_sff_init_host(struct ata_host *host); | |
1399 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, | |
624d5c51 TH |
1400 | const struct ata_port_info * const * ppi, |
1401 | struct ata_host **r_host); | |
9363c382 | 1402 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
624d5c51 TH |
1403 | irq_handler_t irq_handler, |
1404 | struct scsi_host_template *sht); | |
9363c382 TH |
1405 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
1406 | const struct ata_port_info * const * ppi, | |
1407 | struct scsi_host_template *sht, void *host_priv); | |
624d5c51 TH |
1408 | #endif /* CONFIG_PCI */ |
1409 | ||
624d5c51 | 1410 | /** |
9363c382 | 1411 | * ata_sff_pause - Flush writes and pause 400 nanoseconds. |
624d5c51 TH |
1412 | * @ap: Port to wait for. |
1413 | * | |
1414 | * LOCKING: | |
1415 | * Inherited from caller. | |
1416 | */ | |
9363c382 | 1417 | static inline void ata_sff_pause(struct ata_port *ap) |
624d5c51 | 1418 | { |
9363c382 | 1419 | ata_sff_altstatus(ap); |
624d5c51 TH |
1420 | ndelay(400); |
1421 | } | |
1422 | ||
1423 | /** | |
9363c382 | 1424 | * ata_sff_busy_wait - Wait for a port status register |
624d5c51 TH |
1425 | * @ap: Port to wait for. |
1426 | * @bits: bits that must be clear | |
1427 | * @max: number of 10uS waits to perform | |
1428 | * | |
1429 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1430 | * status register to be cleared. | |
1431 | * Returns final value of status register. | |
1432 | * | |
1433 | * LOCKING: | |
1434 | * Inherited from caller. | |
1435 | */ | |
9363c382 TH |
1436 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1437 | unsigned int max) | |
624d5c51 TH |
1438 | { |
1439 | u8 status; | |
1440 | ||
1441 | do { | |
1442 | udelay(10); | |
5682ed33 | 1443 | status = ap->ops->sff_check_status(ap); |
624d5c51 TH |
1444 | max--; |
1445 | } while (status != 0xff && (status & bits) && (max > 0)); | |
1446 | ||
1447 | return status; | |
1448 | } | |
1449 | ||
1450 | /** | |
1451 | * ata_wait_idle - Wait for a port to be idle. | |
1452 | * @ap: Port to wait for. | |
1453 | * | |
1454 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1455 | * Returns final value of status register. | |
1456 | * | |
1457 | * LOCKING: | |
1458 | * Inherited from caller. | |
1459 | */ | |
1460 | static inline u8 ata_wait_idle(struct ata_port *ap) | |
1461 | { | |
9363c382 | 1462 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
624d5c51 TH |
1463 | |
1464 | #ifdef ATA_DEBUG | |
1465 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) | |
1466 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", | |
1467 | status); | |
1468 | #endif | |
1469 | ||
1470 | return status; | |
1471 | } | |
1472 | ||
1da177e4 | 1473 | #endif /* __LINUX_LIBATA_H__ */ |