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 */ |
ca77329f KCA |
136 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
137 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ | |
2557164e | 138 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 139 | |
2557164e KCA |
140 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
141 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
142 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ | |
054a5fba | 143 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
72fa4b74 | 144 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
1da177e4 | 145 | |
abdda733 TH |
146 | ATA_DFLAG_DETACH = (1 << 16), |
147 | ATA_DFLAG_DETACHED = (1 << 17), | |
148 | ||
1da177e4 LT |
149 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
150 | ATA_DEV_ATA = 1, /* ATA device */ | |
151 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
152 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
153 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
154 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
155 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
156 | ATA_DEV_SEMB = 7, /* SEMB */ | |
157 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
158 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 159 | |
0c88758b TH |
160 | /* struct ata_link flags */ |
161 | ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */ | |
162 | ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H | |
163 | * Register FIS clearing BSY */ | |
ae791c05 TH |
164 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
165 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
166 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
167 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 168 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 169 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
0c88758b | 170 | |
1da177e4 | 171 | /* struct ata_port flags */ |
949b38af | 172 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 173 | /* (doesn't imply presence) */ |
949b38af TH |
174 | ATA_FLAG_SATA = (1 << 1), |
175 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ | |
176 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ | |
177 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ | |
178 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ | |
179 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ | |
180 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
181 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
182 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
183 | * doesn't handle PIO interrupts */ | |
184 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
7395acb2 | 185 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 186 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 187 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 188 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 189 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 190 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
ca77329f | 191 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
949b38af | 192 | |
b51e9e5d TH |
193 | /* The following flag belongs to ap->pflags but is kept in |
194 | * ap->flags because it's referenced in many LLDs and will be | |
195 | * removed in not-too-distant future. | |
196 | */ | |
197 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
198 | ||
199 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 200 | |
b51e9e5d TH |
201 | /* struct ata_port pflags */ |
202 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
203 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
204 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
205 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
206 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
207 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ | |
208 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ | |
f4d6d004 | 209 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 210 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
949b38af | 211 | |
b51e9e5d | 212 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 213 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
64578a3d | 214 | ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ |
949b38af TH |
215 | |
216 | /* struct ata_queued_cmd flags */ | |
217 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
218 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ | |
219 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ | |
1da177e4 | 220 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
27197367 | 221 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 222 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 223 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e027bd36 | 224 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
e61e0672 | 225 | |
9ec957f2 TH |
226 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
227 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
228 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 229 | |
4e5ec5db | 230 | /* host set flags */ |
cca3974e | 231 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 232 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
9bec2e38 | 233 | |
b8b275ef TH |
234 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
235 | ||
1da177e4 | 236 | /* various lengths of time */ |
8d238e01 AC |
237 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
238 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ | |
a2a7a662 TH |
239 | ATA_TMOUT_INTERNAL = 30 * HZ, |
240 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, | |
1da177e4 | 241 | |
88ff6eaf TH |
242 | /* FIXME: GoVault needs 2s but we can't afford that without |
243 | * parallel probing. 800ms is enough for iVDR disk | |
244 | * HHD424020F7SV00. Increase to 2secs when parallel probing | |
245 | * is in place. | |
246 | */ | |
247 | ATA_TMOUT_FF_WAIT = 4 * HZ / 5, | |
248 | ||
1da177e4 LT |
249 | /* ATA bus states */ |
250 | BUS_UNKNOWN = 0, | |
251 | BUS_DMA = 1, | |
252 | BUS_IDLE = 2, | |
253 | BUS_NOINTR = 3, | |
254 | BUS_NODATA = 4, | |
255 | BUS_TIMER = 5, | |
256 | BUS_PIO = 6, | |
257 | BUS_EDD = 7, | |
258 | BUS_IDENTIFY = 8, | |
259 | BUS_PACKET = 9, | |
260 | ||
261 | /* SATA port states */ | |
262 | PORT_UNKNOWN = 0, | |
263 | PORT_ENABLED = 1, | |
264 | PORT_DISABLED = 2, | |
265 | ||
266 | /* encoding various smaller bitmaps into a single | |
1da7b0d0 | 267 | * unsigned int bitmap |
1da177e4 | 268 | */ |
b352e57d AC |
269 | ATA_BITS_PIO = 7, |
270 | ATA_BITS_MWDMA = 5, | |
1da7b0d0 TH |
271 | ATA_BITS_UDMA = 8, |
272 | ||
273 | ATA_SHIFT_PIO = 0, | |
274 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, | |
275 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, | |
276 | ||
277 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, | |
278 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, | |
279 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, | |
cedc9a47 JG |
280 | |
281 | /* size of buffer to pad xfers ending on unaligned boundaries */ | |
282 | ATA_DMA_PAD_SZ = 4, | |
283 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, | |
949b38af | 284 | |
0c247c55 TH |
285 | /* ering size */ |
286 | ATA_ERING_SIZE = 32, | |
287 | ||
31cc23b3 TH |
288 | /* return values for ->qc_defer */ |
289 | ATA_DEFER_LINK = 1, | |
290 | ATA_DEFER_PORT = 2, | |
291 | ||
f3e81b19 TH |
292 | /* desc_len for ata_eh_info and context */ |
293 | ATA_EH_DESC_LEN = 80, | |
294 | ||
9be1e979 TH |
295 | /* reset / recovery action types */ |
296 | ATA_EH_REVALIDATE = (1 << 0), | |
297 | ATA_EH_SOFTRESET = (1 << 1), | |
298 | ATA_EH_HARDRESET = (1 << 2), | |
f9df58cb | 299 | ATA_EH_ENABLE_LINK = (1 << 3), |
9be1e979 TH |
300 | |
301 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
9666f400 | 302 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
9be1e979 | 303 | |
f3e81b19 | 304 | /* ata_eh_info->flags */ |
abdda733 | 305 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
13abf50d | 306 | ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ |
1cdaf534 TH |
307 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
308 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
ca77329f | 309 | ATA_EHI_LPM = (1 << 4), /* link power management action */ |
abdda733 | 310 | |
0d64a233 TH |
311 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
312 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
313 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
314 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
315 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 316 | |
0d64a233 | 317 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d TH |
318 | ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
319 | ||
a1e10f7e TH |
320 | /* max tries if error condition is still set after ->error_handler */ |
321 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 322 | |
14d2bac1 TH |
323 | /* how hard are we gonna try to probe/recover devices */ |
324 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 325 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
326 | ATA_EH_PMP_TRIES = 5, |
327 | ATA_EH_PMP_LINK_TRIES = 3, | |
328 | ||
329 | SATA_PMP_SCR_TIMEOUT = 250, | |
f5914a46 | 330 | |
93590859 AC |
331 | /* Horkage types. May be set by libata or controller on drives |
332 | (some horkage may be drive/controller pair dependant */ | |
333 | ||
334 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
335 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
336 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 337 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 338 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
e31e8531 | 339 | ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ |
93328e11 | 340 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
ca77329f | 341 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
b3a70601 | 342 | |
2dcb407e | 343 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
344 | renumber */ |
345 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
346 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
347 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
1da177e4 LT |
348 | }; |
349 | ||
14be71f4 | 350 | enum hsm_task_states { |
c56b14d2 | 351 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
352 | HSM_ST_FIRST, /* (waiting the device to) |
353 | write CDB or first data block */ | |
c56b14d2 AL |
354 | HSM_ST, /* (waiting the device to) transfer data */ |
355 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 356 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
357 | }; |
358 | ||
a7dac447 | 359 | enum ata_completion_errors { |
11a56d24 TH |
360 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
361 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
362 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
363 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
364 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
365 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
366 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
367 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
368 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 369 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 370 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
371 | }; |
372 | ||
1da177e4 LT |
373 | /* forward declarations */ |
374 | struct scsi_device; | |
375 | struct ata_port_operations; | |
376 | struct ata_port; | |
cc0680a5 | 377 | struct ata_link; |
1da177e4 LT |
378 | struct ata_queued_cmd; |
379 | ||
380 | /* typedefs */ | |
77853bf2 | 381 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
382 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
383 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 384 | unsigned long deadline); |
cc0680a5 | 385 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 386 | |
ca77329f KCA |
387 | /* |
388 | * host pm policy: If you alter this, you also need to alter libata-scsi.c | |
389 | * (for the ascii descriptions) | |
390 | */ | |
391 | enum link_pm { | |
392 | NOT_AVAILABLE, | |
393 | MIN_POWER, | |
394 | MAX_PERFORMANCE, | |
395 | MEDIUM_POWER, | |
396 | }; | |
397 | extern struct class_device_attribute class_device_attr_link_power_management_policy; | |
398 | ||
1da177e4 | 399 | struct ata_ioports { |
0d5ff566 TH |
400 | void __iomem *cmd_addr; |
401 | void __iomem *data_addr; | |
402 | void __iomem *error_addr; | |
403 | void __iomem *feature_addr; | |
404 | void __iomem *nsect_addr; | |
405 | void __iomem *lbal_addr; | |
406 | void __iomem *lbam_addr; | |
407 | void __iomem *lbah_addr; | |
408 | void __iomem *device_addr; | |
409 | void __iomem *status_addr; | |
410 | void __iomem *command_addr; | |
411 | void __iomem *altstatus_addr; | |
412 | void __iomem *ctl_addr; | |
413 | void __iomem *bmdma_addr; | |
414 | void __iomem *scr_addr; | |
1da177e4 LT |
415 | }; |
416 | ||
cca3974e | 417 | struct ata_host { |
1da177e4 LT |
418 | spinlock_t lock; |
419 | struct device *dev; | |
0d5ff566 | 420 | void __iomem * const *iomap; |
1da177e4 LT |
421 | unsigned int n_ports; |
422 | void *private_data; | |
057ace5e | 423 | const struct ata_port_operations *ops; |
5444a6f4 | 424 | unsigned long flags; |
fafbae87 TH |
425 | #ifdef CONFIG_ATA_ACPI |
426 | acpi_handle acpi_handle; | |
427 | #endif | |
032af1ce | 428 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 429 | struct ata_port *ports[0]; |
1da177e4 LT |
430 | }; |
431 | ||
432 | struct ata_queued_cmd { | |
433 | struct ata_port *ap; | |
434 | struct ata_device *dev; | |
435 | ||
436 | struct scsi_cmnd *scsicmd; | |
437 | void (*scsidone)(struct scsi_cmnd *); | |
438 | ||
439 | struct ata_taskfile tf; | |
440 | u8 cdb[ATAPI_CDB_LEN]; | |
441 | ||
442 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
443 | unsigned int tag; | |
444 | unsigned int n_elem; | |
87260216 | 445 | unsigned int n_iter; |
cedc9a47 | 446 | unsigned int orig_n_elem; |
1da177e4 LT |
447 | |
448 | int dma_dir; | |
449 | ||
cedc9a47 | 450 | unsigned int pad_len; |
5a5dbd18 | 451 | unsigned int sect_size; |
cedc9a47 | 452 | |
1da177e4 LT |
453 | unsigned int nbytes; |
454 | unsigned int curbytes; | |
455 | ||
87260216 | 456 | struct scatterlist *cursg; |
1da177e4 LT |
457 | unsigned int cursg_ofs; |
458 | ||
459 | struct scatterlist sgent; | |
cedc9a47 | 460 | struct scatterlist pad_sgent; |
1da177e4 LT |
461 | void *buf_virt; |
462 | ||
cedc9a47 JG |
463 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
464 | struct scatterlist *__sg; | |
1da177e4 | 465 | |
a22e2eb0 | 466 | unsigned int err_mask; |
e61e0672 | 467 | struct ata_taskfile result_tf; |
1da177e4 LT |
468 | ata_qc_cb_t complete_fn; |
469 | ||
1da177e4 | 470 | void *private_data; |
1c50dc83 | 471 | void *lldd_task; |
1da177e4 LT |
472 | }; |
473 | ||
cca3974e | 474 | struct ata_port_stats { |
1da177e4 LT |
475 | unsigned long unhandled_irq; |
476 | unsigned long idle_irq; | |
477 | unsigned long rw_reqbuf; | |
478 | }; | |
479 | ||
0c247c55 TH |
480 | struct ata_ering_entry { |
481 | int is_io; | |
482 | unsigned int err_mask; | |
483 | u64 timestamp; | |
484 | }; | |
485 | ||
486 | struct ata_ering { | |
487 | int cursor; | |
488 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
489 | }; | |
490 | ||
1da177e4 | 491 | struct ata_device { |
9af5c9c9 | 492 | struct ata_link *link; |
72fa4b74 | 493 | unsigned int devno; /* 0 or 1 */ |
1da177e4 | 494 | unsigned long flags; /* ATA_DFLAG_xxx */ |
75683fe7 | 495 | unsigned int horkage; /* List of broken features */ |
3edebac4 | 496 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
497 | #ifdef CONFIG_ATA_ACPI |
498 | acpi_handle acpi_handle; | |
499 | #endif | |
72fa4b74 TH |
500 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
501 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 502 | unsigned int class; /* ATA_DEV_xxx */ |
e0a71752 TH |
503 | |
504 | union { | |
505 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
506 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
507 | }; | |
508 | ||
1da177e4 LT |
509 | u8 pio_mode; |
510 | u8 dma_mode; | |
511 | u8 xfer_mode; | |
512 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
513 | ||
8cbd6df1 AL |
514 | unsigned int multi_count; /* sectors count for |
515 | READ/WRITE MULTIPLE */ | |
b00eec1d | 516 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 517 | unsigned int cdb_len; |
8bf62ece | 518 | |
acf356b1 TH |
519 | /* per-dev xfer mask */ |
520 | unsigned int pio_mask; | |
521 | unsigned int mwdma_mask; | |
522 | unsigned int udma_mask; | |
523 | ||
8bf62ece AL |
524 | /* for CHS addressing */ |
525 | u16 cylinders; /* Number of cylinders */ | |
526 | u16 heads; /* Number of heads */ | |
527 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
528 | |
529 | /* error history */ | |
530 | struct ata_ering ering; | |
7d47e8d4 | 531 | int spdn_cnt; |
1da177e4 LT |
532 | }; |
533 | ||
72fa4b74 TH |
534 | /* Offset into struct ata_device. Fields above it are maintained |
535 | * acress device init. Fields below are zeroed. | |
536 | */ | |
537 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
538 | ||
f3e81b19 TH |
539 | struct ata_eh_info { |
540 | struct ata_device *dev; /* offending device */ | |
541 | u32 serror; /* SError from LLDD */ | |
542 | unsigned int err_mask; /* port-wide err_mask */ | |
543 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 544 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 545 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 546 | |
abdda733 TH |
547 | unsigned int probe_mask; |
548 | ||
f3e81b19 TH |
549 | char desc[ATA_EH_DESC_LEN]; |
550 | int desc_len; | |
551 | }; | |
552 | ||
553 | struct ata_eh_context { | |
554 | struct ata_eh_info i; | |
555 | int tries[ATA_MAX_DEVICES]; | |
abdda733 TH |
556 | unsigned int classes[ATA_MAX_DEVICES]; |
557 | unsigned int did_probe_mask; | |
f3e81b19 TH |
558 | }; |
559 | ||
64578a3d TH |
560 | struct ata_acpi_drive |
561 | { | |
562 | u32 pio; | |
563 | u32 dma; | |
564 | } __packed; | |
565 | ||
566 | struct ata_acpi_gtm { | |
567 | struct ata_acpi_drive drive[2]; | |
568 | u32 flags; | |
569 | } __packed; | |
570 | ||
9af5c9c9 TH |
571 | struct ata_link { |
572 | struct ata_port *ap; | |
8989805d | 573 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
574 | |
575 | unsigned int active_tag; /* active tag on this link */ | |
576 | u32 sactive; /* active NCQ commands */ | |
577 | ||
0c88758b TH |
578 | unsigned int flags; /* ATA_LFLAG_xxx */ |
579 | ||
9af5c9c9 TH |
580 | unsigned int hw_sata_spd_limit; |
581 | unsigned int sata_spd_limit; | |
582 | unsigned int sata_spd; /* current SATA PHY speed */ | |
583 | ||
584 | /* record runtime error info, protected by host_set lock */ | |
585 | struct ata_eh_info eh_info; | |
586 | /* EH context */ | |
587 | struct ata_eh_context eh_context; | |
588 | ||
589 | struct ata_device device[ATA_MAX_DEVICES]; | |
590 | }; | |
591 | ||
1da177e4 | 592 | struct ata_port { |
cca3974e | 593 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
057ace5e | 594 | const struct ata_port_operations *ops; |
ba6a1308 | 595 | spinlock_t *lock; |
1da177e4 | 596 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 597 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
598 | unsigned int print_id; /* user visible unique port ID */ |
599 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
600 | |
601 | struct ata_prd *prd; /* our SG list */ | |
602 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
603 | ||
cedc9a47 JG |
604 | void *pad; /* array of DMA pad buffers */ |
605 | dma_addr_t pad_dma; | |
606 | ||
1da177e4 LT |
607 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
608 | ||
609 | u8 ctl; /* cache of ATA control register */ | |
610 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
611 | unsigned int pio_mask; |
612 | unsigned int mwdma_mask; | |
613 | unsigned int udma_mask; | |
614 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
615 | |
616 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
6cec4a39 | 617 | unsigned long qc_allocated; |
dedaf2b0 | 618 | unsigned int qc_active; |
da917d69 | 619 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 620 | |
9af5c9c9 | 621 | struct ata_link link; /* host default link */ |
1da177e4 | 622 | |
8989805d TH |
623 | int nr_pmp_links; /* nr of available PMP links */ |
624 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 625 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 626 | |
cca3974e JG |
627 | struct ata_port_stats stats; |
628 | struct ata_host *host; | |
2f1f610b | 629 | struct device *dev; |
1da177e4 | 630 | |
65f27f38 | 631 | void *port_task_data; |
52bad64d DH |
632 | struct delayed_work port_task; |
633 | struct delayed_work hotplug_task; | |
3b01b8af | 634 | struct work_struct scsi_rescan_task; |
86e45b6b | 635 | |
14be71f4 | 636 | unsigned int hsm_task_state; |
1da177e4 | 637 | |
bfd60579 | 638 | u32 msg_enable; |
a72ec4ce | 639 | struct list_head eh_done_q; |
c6cf9e99 | 640 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 641 | int eh_tries; |
bfd60579 | 642 | |
500530f6 TH |
643 | pm_message_t pm_mesg; |
644 | int *pm_result; | |
ca77329f | 645 | enum link_pm pm_policy; |
500530f6 | 646 | |
5ddf24c5 TH |
647 | struct timer_list fastdrain_timer; |
648 | unsigned long fastdrain_cnt; | |
649 | ||
1da177e4 | 650 | void *private_data; |
fe635c7e | 651 | |
fafbae87 TH |
652 | #ifdef CONFIG_ATA_ACPI |
653 | acpi_handle acpi_handle; | |
64578a3d | 654 | struct ata_acpi_gtm acpi_gtm; |
fafbae87 | 655 | #endif |
fe635c7e | 656 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
657 | }; |
658 | ||
659 | struct ata_port_operations { | |
cd0d3bbc | 660 | void (*dev_config) (struct ata_device *); |
1da177e4 LT |
661 | |
662 | void (*set_piomode) (struct ata_port *, struct ata_device *); | |
663 | void (*set_dmamode) (struct ata_port *, struct ata_device *); | |
a76b62ca | 664 | unsigned long (*mode_filter) (struct ata_device *, unsigned long); |
1da177e4 | 665 | |
057ace5e | 666 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
667 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
668 | ||
057ace5e | 669 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
670 | u8 (*check_status)(struct ata_port *ap); |
671 | u8 (*check_altstatus)(struct ata_port *ap); | |
1da177e4 LT |
672 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
673 | ||
c19ba8af | 674 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
0260731f | 675 | int (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev); |
c19ba8af | 676 | |
be0d18df AC |
677 | int (*cable_detect) (struct ata_port *ap); |
678 | ||
b229a7b0 | 679 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
1da177e4 LT |
680 | |
681 | void (*bmdma_setup) (struct ata_queued_cmd *qc); | |
682 | void (*bmdma_start) (struct ata_queued_cmd *qc); | |
683 | ||
a6b2c5d4 AC |
684 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
685 | ||
31cc23b3 | 686 | int (*qc_defer) (struct ata_queued_cmd *qc); |
1da177e4 | 687 | void (*qc_prep) (struct ata_queued_cmd *qc); |
9a3d9eb0 | 688 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
1da177e4 | 689 | |
e0a71752 TH |
690 | /* port multiplier */ |
691 | void (*pmp_attach) (struct ata_port *ap); | |
692 | void (*pmp_detach) (struct ata_port *ap); | |
e0a71752 | 693 | |
9ec957f2 TH |
694 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
695 | * indicates that new-style EH is in place. | |
696 | */ | |
697 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ | |
698 | ||
699 | void (*freeze) (struct ata_port *ap); | |
700 | void (*thaw) (struct ata_port *ap); | |
701 | void (*error_handler) (struct ata_port *ap); | |
702 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); | |
1da177e4 | 703 | |
7d12e780 | 704 | irq_handler_t irq_handler; |
1da177e4 | 705 | void (*irq_clear) (struct ata_port *); |
83625006 | 706 | u8 (*irq_on) (struct ata_port *); |
1da177e4 | 707 | |
da3dbb17 TH |
708 | int (*scr_read) (struct ata_port *ap, unsigned int sc_reg, u32 *val); |
709 | int (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 710 | |
500530f6 TH |
711 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
712 | int (*port_resume) (struct ata_port *ap); | |
ca77329f KCA |
713 | int (*enable_pm) (struct ata_port *ap, enum link_pm policy); |
714 | void (*disable_pm) (struct ata_port *ap); | |
1da177e4 LT |
715 | int (*port_start) (struct ata_port *ap); |
716 | void (*port_stop) (struct ata_port *ap); | |
717 | ||
cca3974e | 718 | void (*host_stop) (struct ata_host *host); |
1da177e4 | 719 | |
b73fc89f | 720 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
1da177e4 LT |
721 | u8 (*bmdma_status) (struct ata_port *ap); |
722 | }; | |
723 | ||
724 | struct ata_port_info { | |
d0be4a7d | 725 | struct scsi_host_template *sht; |
cca3974e | 726 | unsigned long flags; |
0c88758b | 727 | unsigned long link_flags; |
1da177e4 LT |
728 | unsigned long pio_mask; |
729 | unsigned long mwdma_mask; | |
730 | unsigned long udma_mask; | |
057ace5e | 731 | const struct ata_port_operations *port_ops; |
21b0ad4f | 732 | irq_handler_t irq_handler; |
e99f8b5e | 733 | void *private_data; |
1da177e4 LT |
734 | }; |
735 | ||
452503f9 AC |
736 | struct ata_timing { |
737 | unsigned short mode; /* ATA mode */ | |
738 | unsigned short setup; /* t1 */ | |
739 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
740 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
741 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
742 | unsigned short active; /* t2 or tD */ | |
743 | unsigned short recover; /* t2i or tK */ | |
744 | unsigned short cycle; /* t0 */ | |
745 | unsigned short udma; /* t2CYCTYP/2 */ | |
746 | }; | |
747 | ||
2dcb407e | 748 | #define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin) |
1da177e4 | 749 | |
e9c83914 TH |
750 | extern const unsigned long sata_deb_timing_normal[]; |
751 | extern const unsigned long sata_deb_timing_hotplug[]; | |
752 | extern const unsigned long sata_deb_timing_long[]; | |
753 | ||
dd5b06c4 | 754 | extern const struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 755 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 756 | |
e9c83914 TH |
757 | static inline const unsigned long * |
758 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
759 | { | |
760 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
761 | return sata_deb_timing_hotplug; | |
762 | else | |
763 | return sata_deb_timing_normal; | |
764 | } | |
d7bb4cc7 | 765 | |
dd5b06c4 TH |
766 | static inline int ata_port_is_dummy(struct ata_port *ap) |
767 | { | |
768 | return ap->ops == &ata_dummy_port_ops; | |
769 | } | |
770 | ||
936fd732 | 771 | extern void sata_print_link_status(struct ata_link *link); |
1da177e4 LT |
772 | extern void ata_port_probe(struct ata_port *); |
773 | extern void __sata_phy_reset(struct ata_port *ap); | |
774 | extern void sata_phy_reset(struct ata_port *ap); | |
775 | extern void ata_bus_reset(struct ata_port *ap); | |
936fd732 TH |
776 | extern int sata_set_spd(struct ata_link *link); |
777 | extern int sata_link_debounce(struct ata_link *link, | |
778 | const unsigned long *params, unsigned long deadline); | |
779 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
780 | unsigned long deadline); | |
cc0680a5 TH |
781 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
782 | extern int ata_std_softreset(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 783 | unsigned long deadline); |
cc0680a5 TH |
784 | extern int sata_link_hardreset(struct ata_link *link, |
785 | const unsigned long *timing, unsigned long deadline); | |
786 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, | |
d4b2bab4 | 787 | unsigned long deadline); |
cc0680a5 | 788 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 LT |
789 | extern void ata_port_disable(struct ata_port *); |
790 | extern void ata_std_ports(struct ata_ioports *ioaddr); | |
2855568b | 791 | |
f3187195 | 792 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
793 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
794 | const struct ata_port_info * const * ppi, int n_ports); | |
ecef7253 | 795 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
796 | extern int ata_host_register(struct ata_host *host, |
797 | struct scsi_host_template *sht); | |
f5cda257 TH |
798 | extern int ata_host_activate(struct ata_host *host, int irq, |
799 | irq_handler_t irq_handler, unsigned long irq_flags, | |
800 | struct scsi_host_template *sht); | |
0529c159 | 801 | extern void ata_host_detach(struct ata_host *host); |
cca3974e JG |
802 | extern void ata_host_init(struct ata_host *, struct device *, |
803 | unsigned long, const struct ata_port_operations *); | |
193515d5 | 804 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
805 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
806 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
80289167 | 807 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 808 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
809 | struct ata_port_info *, struct Scsi_Host *); |
810 | extern int ata_sas_port_init(struct ata_port *); | |
811 | extern int ata_sas_port_start(struct ata_port *ap); | |
812 | extern void ata_sas_port_stop(struct ata_port *ap); | |
813 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
814 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
815 | struct ata_port *ap); | |
1da177e4 | 816 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
936fd732 TH |
817 | extern int sata_scr_valid(struct ata_link *link); |
818 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
819 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
820 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
821 | extern int ata_link_online(struct ata_link *link); | |
822 | extern int ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 823 | #ifdef CONFIG_PM |
cca3974e JG |
824 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
825 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 826 | #endif |
67846b30 | 827 | extern int ata_ratelimit(void); |
d1adc1bb TH |
828 | extern int ata_busy_sleep(struct ata_port *ap, |
829 | unsigned long timeout_pat, unsigned long timeout); | |
88ff6eaf | 830 | extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline); |
d4b2bab4 | 831 | extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); |
65f27f38 | 832 | extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, |
86e45b6b | 833 | void *data, unsigned long delay); |
c22daff4 TH |
834 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
835 | unsigned long interval_msec, | |
836 | unsigned long timeout_msec); | |
3f19859e TH |
837 | extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present, |
838 | u8 *r_err); | |
67846b30 | 839 | |
1da177e4 LT |
840 | /* |
841 | * Default driver ops implementations | |
842 | */ | |
057ace5e | 843 | extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 | 844 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
9977126c TH |
845 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
846 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 847 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
2dcb407e JG |
848 | extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device); |
849 | extern void ata_std_dev_select(struct ata_port *ap, unsigned int device); | |
1da177e4 LT |
850 | extern u8 ata_check_status(struct ata_port *ap); |
851 | extern u8 ata_altstatus(struct ata_port *ap); | |
057ace5e | 852 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
2dcb407e JG |
853 | extern int ata_port_start(struct ata_port *ap); |
854 | extern int ata_sff_port_start(struct ata_port *ap); | |
855 | extern irqreturn_t ata_interrupt(int irq, void *dev_instance); | |
0d5ff566 TH |
856 | extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, |
857 | unsigned int buflen, int write_data); | |
858 | extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, | |
859 | unsigned int buflen, int write_data); | |
31cc23b3 | 860 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
d26fc955 | 861 | extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 | 862 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
e46834cd | 863 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
9a3d9eb0 | 864 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
1da177e4 LT |
865 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
866 | unsigned int buflen); | |
867 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, | |
868 | unsigned int n_elem); | |
057ace5e | 869 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 870 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
871 | extern void ata_id_string(const u16 *id, unsigned char *s, |
872 | unsigned int ofs, unsigned int len); | |
873 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
874 | unsigned int ofs, unsigned int len); | |
10305f0f | 875 | extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); |
2dcb407e JG |
876 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
877 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
b73fc89f | 878 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
1da177e4 LT |
879 | extern u8 ata_bmdma_status(struct ata_port *ap); |
880 | extern void ata_bmdma_irq_clear(struct ata_port *ap); | |
6d97dbd7 TH |
881 | extern void ata_bmdma_freeze(struct ata_port *ap); |
882 | extern void ata_bmdma_thaw(struct ata_port *ap); | |
f5914a46 | 883 | extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
6d97dbd7 TH |
884 | ata_reset_fn_t softreset, |
885 | ata_reset_fn_t hardreset, | |
886 | ata_postreset_fn_t postreset); | |
887 | extern void ata_bmdma_error_handler(struct ata_port *ap); | |
888 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); | |
9a1004d0 TH |
889 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
890 | u8 status, int in_wq); | |
f686bcb8 | 891 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
dedaf2b0 TH |
892 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
893 | void (*finish_qc)(struct ata_queued_cmd *)); | |
3373efd8 | 894 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
895 | void (*done)(struct scsi_cmnd *)); |
896 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
897 | struct block_device *bdev, | |
898 | sector_t capacity, int geom[]); | |
899 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 900 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
901 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
902 | int queue_depth); | |
3373efd8 | 903 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 904 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
83625006 | 905 | extern u8 ata_irq_on(struct ata_port *ap); |
1da177e4 | 906 | |
be0d18df AC |
907 | extern int ata_cable_40wire(struct ata_port *ap); |
908 | extern int ata_cable_80wire(struct ata_port *ap); | |
909 | extern int ata_cable_sata(struct ata_port *ap); | |
910 | extern int ata_cable_unknown(struct ata_port *ap); | |
911 | ||
452503f9 AC |
912 | /* |
913 | * Timing helpers | |
914 | */ | |
1bc4ccff AC |
915 | |
916 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); | |
452503f9 AC |
917 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
918 | struct ata_timing *, int, int); | |
919 | extern void ata_timing_merge(const struct ata_timing *, | |
920 | const struct ata_timing *, struct ata_timing *, | |
921 | unsigned int); | |
922 | ||
923 | enum { | |
924 | ATA_TIMING_SETUP = (1 << 0), | |
925 | ATA_TIMING_ACT8B = (1 << 1), | |
926 | ATA_TIMING_REC8B = (1 << 2), | |
927 | ATA_TIMING_CYC8B = (1 << 3), | |
928 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
929 | ATA_TIMING_CYC8B, | |
930 | ATA_TIMING_ACTIVE = (1 << 4), | |
931 | ATA_TIMING_RECOVER = (1 << 5), | |
932 | ATA_TIMING_CYCLE = (1 << 6), | |
933 | ATA_TIMING_UDMA = (1 << 7), | |
934 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | | |
935 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
936 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
937 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, | |
938 | }; | |
939 | ||
e1ddb4b6 AC |
940 | /* libata-acpi.c */ |
941 | #ifdef CONFIG_ATA_ACPI | |
942 | extern int ata_acpi_cbl_80wire(struct ata_port *ap); | |
badff03d AC |
943 | int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm); |
944 | int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm); | |
e1ddb4b6 AC |
945 | #else |
946 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } | |
947 | #endif | |
1da177e4 LT |
948 | |
949 | #ifdef CONFIG_PCI | |
2855568b JG |
950 | struct pci_dev; |
951 | ||
2dcb407e | 952 | extern int ata_pci_init_one(struct pci_dev *pdev, |
2855568b | 953 | const struct ata_port_info * const * ppi); |
2dcb407e | 954 | extern void ata_pci_remove_one(struct pci_dev *pdev); |
2855568b JG |
955 | #ifdef CONFIG_PM |
956 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
957 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
958 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
959 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
960 | #endif | |
961 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); | |
962 | ||
1da177e4 LT |
963 | struct pci_bits { |
964 | unsigned int reg; /* PCI config register to read */ | |
965 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
966 | unsigned long mask; | |
967 | unsigned long val; | |
968 | }; | |
969 | ||
d583bc18 | 970 | extern int ata_pci_init_sff_host(struct ata_host *host); |
1626aeb8 | 971 | extern int ata_pci_init_bmdma(struct ata_host *host); |
d583bc18 TH |
972 | extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, |
973 | const struct ata_port_info * const * ppi, | |
974 | struct ata_host **r_host); | |
057ace5e | 975 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
a76b62ca | 976 | extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); |
1da177e4 LT |
977 | #endif /* CONFIG_PCI */ |
978 | ||
3af9a77a TH |
979 | /* |
980 | * PMP | |
981 | */ | |
31f88384 | 982 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
3af9a77a TH |
983 | extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline); |
984 | extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class, | |
985 | unsigned long deadline); | |
986 | extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class); | |
987 | extern void sata_pmp_do_eh(struct ata_port *ap, | |
988 | ata_prereset_fn_t prereset, ata_reset_fn_t softreset, | |
989 | ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, | |
990 | ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset, | |
991 | ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset); | |
992 | ||
ece1d636 TH |
993 | /* |
994 | * EH | |
995 | */ | |
ece1d636 | 996 | extern void ata_eng_timeout(struct ata_port *ap); |
7b70fc03 TH |
997 | |
998 | extern void ata_port_schedule_eh(struct ata_port *ap); | |
dbd82616 | 999 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1000 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1001 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1002 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1003 | |
1004 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1005 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1006 | |
ece1d636 TH |
1007 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1008 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
1009 | ||
f5914a46 TH |
1010 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1011 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1012 | ata_postreset_fn_t postreset); | |
022bdb07 | 1013 | |
61440db6 TH |
1014 | /* |
1015 | * printk helpers | |
1016 | */ | |
1017 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
44877b4e | 1018 | printk(lv"ata%u: "fmt, (ap)->print_id , ##args) |
61440db6 | 1019 | |
8989805d TH |
1020 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
1021 | if ((link)->ap->nr_pmp_links) \ | |
1022 | printk(lv"ata%u.%02u: "fmt, (link)->ap->print_id, \ | |
1023 | (link)->pmp , ##args); \ | |
1024 | else \ | |
1025 | printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args); \ | |
1026 | } while(0) | |
9af5c9c9 | 1027 | |
61440db6 | 1028 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
8989805d TH |
1029 | printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, \ |
1030 | (dev)->link->pmp + (dev)->devno , ##args) | |
1da177e4 | 1031 | |
f3e81b19 TH |
1032 | /* |
1033 | * ata_eh_info helpers | |
1034 | */ | |
cb94c1cf TH |
1035 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1036 | __attribute__ ((format (printf, 2, 3))); | |
1037 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1038 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1039 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1040 | |
f8f1e1cc | 1041 | static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi) |
084fe639 | 1042 | { |
f8f1e1cc | 1043 | ehi->flags |= ATA_EHI_RESUME_LINK; |
084fe639 TH |
1044 | ehi->action |= ATA_EH_SOFTRESET; |
1045 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; | |
1046 | } | |
1047 | ||
c0b6c037 TH |
1048 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1049 | { | |
f8f1e1cc TH |
1050 | ata_ehi_schedule_probe(ehi); |
1051 | ehi->flags |= ATA_EHI_HOTPLUGGED; | |
f9df58cb | 1052 | ehi->action |= ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1053 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1054 | } | |
1055 | ||
cbcdd875 TH |
1056 | /* |
1057 | * port description helpers | |
1058 | */ | |
1059 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1060 | __attribute__ ((format (printf, 2, 3))); | |
1061 | #ifdef CONFIG_PCI | |
1062 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1063 | const char *name); | |
1064 | #endif | |
1065 | ||
61440db6 TH |
1066 | /* |
1067 | * qc helpers | |
1068 | */ | |
cc1887f3 TH |
1069 | static inline struct scatterlist * |
1070 | ata_qc_first_sg(struct ata_queued_cmd *qc) | |
1071 | { | |
87260216 | 1072 | qc->n_iter = 0; |
cc1887f3 TH |
1073 | if (qc->n_elem) |
1074 | return qc->__sg; | |
1075 | if (qc->pad_len) | |
1076 | return &qc->pad_sgent; | |
1077 | return NULL; | |
1078 | } | |
1079 | ||
cedc9a47 JG |
1080 | static inline struct scatterlist * |
1081 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) | |
1082 | { | |
1083 | if (sg == &qc->pad_sgent) | |
1084 | return NULL; | |
87260216 JA |
1085 | if (++qc->n_iter < qc->n_elem) |
1086 | return sg_next(sg); | |
cc1887f3 TH |
1087 | if (qc->pad_len) |
1088 | return &qc->pad_sgent; | |
1089 | return NULL; | |
cedc9a47 JG |
1090 | } |
1091 | ||
1092 | #define ata_for_each_sg(sg, qc) \ | |
cc1887f3 | 1093 | for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) |
cedc9a47 | 1094 | |
1da177e4 LT |
1095 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1096 | { | |
1097 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1098 | } | |
1099 | ||
2ab7db1f TH |
1100 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1101 | { | |
1102 | return tag == ATA_MAX_QUEUE - 1; | |
1103 | } | |
1104 | ||
5806db22 TH |
1105 | /* |
1106 | * device helpers | |
1107 | */ | |
e1211e3f | 1108 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1109 | { |
e0a71752 TH |
1110 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1111 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1112 | } |
1113 | ||
e1211e3f | 1114 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1115 | { |
e0a71752 TH |
1116 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1117 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1118 | } |
1119 | ||
002c8054 TH |
1120 | static inline unsigned int ata_class_absent(unsigned int class) |
1121 | { | |
1122 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1123 | } | |
1124 | ||
e1211e3f TH |
1125 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1126 | { | |
1127 | return ata_class_enabled(dev->class); | |
1128 | } | |
1129 | ||
1130 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1131 | { | |
1132 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1133 | } |
1134 | ||
002c8054 TH |
1135 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1136 | { | |
1137 | return ata_class_absent(dev->class); | |
1138 | } | |
1139 | ||
5806db22 | 1140 | /* |
f58229f8 | 1141 | * link helpers |
5806db22 | 1142 | */ |
8989805d TH |
1143 | static inline int ata_is_host_link(const struct ata_link *link) |
1144 | { | |
1145 | return link == &link->ap->link; | |
1146 | } | |
1147 | ||
f58229f8 | 1148 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1149 | { |
8989805d | 1150 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1151 | return 2; |
1152 | return 1; | |
1153 | } | |
1154 | ||
da917d69 TH |
1155 | static inline int ata_link_active(struct ata_link *link) |
1156 | { | |
1157 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1158 | } | |
1159 | ||
8989805d TH |
1160 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
1161 | { | |
1162 | if (ap->nr_pmp_links) | |
1163 | return ap->pmp_link; | |
1164 | return &ap->link; | |
1165 | } | |
1166 | ||
1167 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) | |
1168 | { | |
1169 | struct ata_port *ap = link->ap; | |
1170 | ||
1171 | if (link == &ap->link) { | |
1172 | if (!ap->nr_pmp_links) | |
1173 | return NULL; | |
1174 | return ap->pmp_link; | |
1175 | } | |
1176 | ||
1177 | if (++link - ap->pmp_link < ap->nr_pmp_links) | |
1178 | return link; | |
1179 | return NULL; | |
1180 | } | |
1181 | ||
1182 | #define __ata_port_for_each_link(lk, ap) \ | |
1183 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) | |
1184 | ||
1185 | #define ata_port_for_each_link(link, ap) \ | |
1186 | for ((link) = ata_port_first_link(ap); (link); \ | |
1187 | (link) = ata_port_next_link(link)) | |
f58229f8 TH |
1188 | |
1189 | #define ata_link_for_each_dev(dev, link) \ | |
1190 | for ((dev) = (link)->device; \ | |
1191 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ | |
1192 | (dev)++) | |
1193 | ||
1194 | #define ata_link_for_each_dev_reverse(dev, link) \ | |
1195 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ | |
1196 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) | |
5806db22 | 1197 | |
1da177e4 LT |
1198 | static inline u8 ata_chk_status(struct ata_port *ap) |
1199 | { | |
1200 | return ap->ops->check_status(ap); | |
1201 | } | |
1202 | ||
6d1245bf TH |
1203 | /** |
1204 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1205 | * @dev: ATA device to test for | |
1206 | * | |
1207 | * LOCKING: | |
1208 | * spin_lock_irqsave(host lock) | |
1209 | * | |
1210 | * RETURNS: | |
1211 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1212 | */ | |
1213 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1214 | { | |
1215 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1216 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1217 | } | |
0baab86b EF |
1218 | |
1219 | /** | |
1220 | * ata_pause - Flush writes and pause 400 nanoseconds. | |
1221 | * @ap: Port to wait for. | |
1222 | * | |
1223 | * LOCKING: | |
1224 | * Inherited from caller. | |
1225 | */ | |
1226 | ||
1da177e4 LT |
1227 | static inline void ata_pause(struct ata_port *ap) |
1228 | { | |
1229 | ata_altstatus(ap); | |
1230 | ndelay(400); | |
1231 | } | |
1232 | ||
0baab86b EF |
1233 | |
1234 | /** | |
1235 | * ata_busy_wait - Wait for a port status register | |
1236 | * @ap: Port to wait for. | |
0777721c AC |
1237 | * @bits: bits that must be clear |
1238 | * @max: number of 10uS waits to perform | |
0baab86b EF |
1239 | * |
1240 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1241 | * status register to be cleared. | |
1242 | * Returns final value of status register. | |
1243 | * | |
1244 | * LOCKING: | |
1245 | * Inherited from caller. | |
1246 | */ | |
1247 | ||
1da177e4 LT |
1248 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
1249 | unsigned int max) | |
1250 | { | |
1251 | u8 status; | |
1252 | ||
1253 | do { | |
1254 | udelay(10); | |
1255 | status = ata_chk_status(ap); | |
1256 | max--; | |
d1adc1bb | 1257 | } while (status != 0xff && (status & bits) && (max > 0)); |
1da177e4 LT |
1258 | |
1259 | return status; | |
1260 | } | |
1261 | ||
0baab86b EF |
1262 | |
1263 | /** | |
1264 | * ata_wait_idle - Wait for a port to be idle. | |
1265 | * @ap: Port to wait for. | |
1266 | * | |
1267 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1268 | * Returns final value of status register. | |
1269 | * | |
1270 | * LOCKING: | |
1271 | * Inherited from caller. | |
1272 | */ | |
1273 | ||
1da177e4 LT |
1274 | static inline u8 ata_wait_idle(struct ata_port *ap) |
1275 | { | |
1276 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); | |
1277 | ||
15529456 | 1278 | #ifdef ATA_DEBUG |
55f3952d | 1279 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
15529456 TH |
1280 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
1281 | status); | |
1282 | #endif | |
1da177e4 LT |
1283 | |
1284 | return status; | |
1285 | } | |
1286 | ||
1287 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) | |
1288 | { | |
1289 | qc->tf.ctl |= ATA_NIEN; | |
1290 | } | |
1291 | ||
f69499f4 TH |
1292 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1293 | unsigned int tag) | |
1da177e4 LT |
1294 | { |
1295 | if (likely(ata_tag_valid(tag))) | |
1296 | return &ap->qcmd[tag]; | |
1297 | return NULL; | |
1298 | } | |
1299 | ||
f69499f4 TH |
1300 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1301 | unsigned int tag) | |
1302 | { | |
1303 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1304 | ||
1305 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1306 | return qc; | |
1307 | ||
1308 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1309 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1310 | return qc; | |
1311 | ||
1312 | return NULL; | |
1313 | } | |
1314 | ||
3373efd8 | 1315 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1316 | { |
1317 | memset(tf, 0, sizeof(*tf)); | |
1318 | ||
9af5c9c9 | 1319 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1320 | if (dev->devno == 0) |
1da177e4 LT |
1321 | tf->device = ATA_DEVICE_OBS; |
1322 | else | |
1323 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1324 | } | |
1325 | ||
2c13b7ce JG |
1326 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1327 | { | |
501e0c50 | 1328 | qc->dma_dir = DMA_NONE; |
2c13b7ce JG |
1329 | qc->__sg = NULL; |
1330 | qc->flags = 0; | |
87260216 JA |
1331 | qc->cursg = NULL; |
1332 | qc->cursg_ofs = 0; | |
2c13b7ce | 1333 | qc->nbytes = qc->curbytes = 0; |
7a801184 | 1334 | qc->n_elem = 0; |
87260216 | 1335 | qc->n_iter = 0; |
a22e2eb0 | 1336 | qc->err_mask = 0; |
d0f29485 | 1337 | qc->pad_len = 0; |
5a5dbd18 | 1338 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1339 | |
3373efd8 | 1340 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1341 | |
1342 | /* init result_tf such that it indicates normal completion */ | |
1343 | qc->result_tf.command = ATA_DRDY; | |
1344 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1345 | } |
1346 | ||
057ace5e | 1347 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1348 | { |
1349 | return ata_id_wcache_enabled(dev->id) || | |
1350 | ata_id_has_flush(dev->id) || | |
1351 | ata_id_has_flush_ext(dev->id); | |
1352 | } | |
1353 | ||
a7dac447 JG |
1354 | static inline unsigned int ac_err_mask(u8 status) |
1355 | { | |
3655d1d3 | 1356 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1357 | return AC_ERR_HSM; |
a7dac447 JG |
1358 | if (status & (ATA_ERR | ATA_DF)) |
1359 | return AC_ERR_DEV; | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | static inline unsigned int __ac_err_mask(u8 status) | |
1364 | { | |
1365 | unsigned int mask = ac_err_mask(status); | |
1366 | if (mask == 0) | |
1367 | return AC_ERR_OTHER; | |
1368 | return mask; | |
1369 | } | |
1370 | ||
6037d6bb JG |
1371 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
1372 | { | |
1373 | ap->pad_dma = 0; | |
f0d36efd TH |
1374 | ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
1375 | &ap->pad_dma, GFP_KERNEL); | |
6037d6bb JG |
1376 | return (ap->pad == NULL) ? -ENOMEM : 0; |
1377 | } | |
1378 | ||
1379 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) | |
1380 | { | |
f0d36efd | 1381 | dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
6037d6bb JG |
1382 | } |
1383 | ||
35bb94b1 JG |
1384 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1385 | { | |
4911487a | 1386 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1387 | } |
1388 | ||
1da177e4 | 1389 | #endif /* __LINUX_LIBATA_H__ */ |