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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> | |
341c2c95 | 30 | #include <linux/jiffies.h> |
1da177e4 | 31 | #include <linux/interrupt.h> |
1c72d8d9 | 32 | #include <linux/dma-mapping.h> |
87260216 | 33 | #include <linux/scatterlist.h> |
f0d36efd | 34 | #include <linux/io.h> |
1da177e4 LT |
35 | #include <linux/ata.h> |
36 | #include <linux/workqueue.h> | |
35bb94b1 | 37 | #include <scsi/scsi_host.h> |
11ef697b | 38 | #include <linux/acpi.h> |
ceb0c642 | 39 | #include <linux/cdrom.h> |
1da177e4 | 40 | |
a6d967a4 JG |
41 | /* |
42 | * Define if arch has non-standard setup. This is a _PCI_ standard | |
43 | * not a legacy or ISA standard. | |
44 | */ | |
45 | #ifdef CONFIG_ATA_NONSTANDARD | |
2ec7df04 | 46 | #include <asm/libata-portmap.h> |
a6d967a4 JG |
47 | #else |
48 | #include <asm-generic/libata-portmap.h> | |
49 | #endif | |
2ec7df04 | 50 | |
1da177e4 | 51 | /* |
bfd60579 RD |
52 | * compile-time options: to be removed as soon as all the drivers are |
53 | * converted to the new debugging mechanism | |
1da177e4 LT |
54 | */ |
55 | #undef ATA_DEBUG /* debugging output */ | |
56 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
57 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
58 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
59 | |
60 | ||
61 | /* note: prints function name for you */ | |
62 | #ifdef ATA_DEBUG | |
63 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
64 | #ifdef ATA_VERBOSE_DEBUG | |
65 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
66 | #else | |
67 | #define VPRINTK(fmt, args...) | |
68 | #endif /* ATA_VERBOSE_DEBUG */ | |
69 | #else | |
70 | #define DPRINTK(fmt, args...) | |
71 | #define VPRINTK(fmt, args...) | |
72 | #endif /* ATA_DEBUG */ | |
73 | ||
2c13b7ce JG |
74 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
75 | ||
bfd60579 RD |
76 | /* NEW: debug levels */ |
77 | #define HAVE_LIBATA_MSG 1 | |
78 | ||
79 | enum { | |
80 | ATA_MSG_DRV = 0x0001, | |
81 | ATA_MSG_INFO = 0x0002, | |
82 | ATA_MSG_PROBE = 0x0004, | |
83 | ATA_MSG_WARN = 0x0008, | |
84 | ATA_MSG_MALLOC = 0x0010, | |
85 | ATA_MSG_CTL = 0x0020, | |
86 | ATA_MSG_INTR = 0x0040, | |
87 | ATA_MSG_ERR = 0x0080, | |
88 | }; | |
89 | ||
90 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
91 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
92 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
93 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
94 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
95 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
96 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
97 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
98 | ||
99 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
100 | { | |
101 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
102 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
103 | if (!dval) | |
104 | return 0; | |
105 | return (1 << dval) - 1; | |
106 | } | |
107 | ||
1da177e4 LT |
108 | /* defines only for the constants which don't work well as enums */ |
109 | #define ATA_TAG_POISON 0xfafbfcfdU | |
110 | ||
1da177e4 LT |
111 | enum { |
112 | /* various global constants */ | |
113 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 114 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 | 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, |
341c2c95 | 119 | ATA_SHORT_PAUSE = 16, |
1da177e4 | 120 | |
140b5e59 TH |
121 | ATAPI_MAX_DRAIN = 16 << 10, |
122 | ||
b558eddd TH |
123 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
124 | ||
1da177e4 LT |
125 | ATA_SHT_EMULATED = 1, |
126 | ATA_SHT_CMD_PER_LUN = 1, | |
127 | ATA_SHT_THIS_ID = -1, | |
cf482935 | 128 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 LT |
129 | |
130 | /* struct ata_device stuff */ | |
949b38af TH |
131 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
132 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 133 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 134 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 135 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
136 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
137 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 138 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
ca77329f KCA |
139 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
140 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ | |
91163006 | 141 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
2557164e | 142 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 143 | |
2557164e KCA |
144 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
145 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
146 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ | |
054a5fba | 147 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
00115e0f | 148 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
f20ded38 | 149 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
1da177e4 | 150 | |
f20ded38 TH |
151 | ATA_DFLAG_DETACH = (1 << 24), |
152 | ATA_DFLAG_DETACHED = (1 << 25), | |
abdda733 | 153 | |
1da177e4 LT |
154 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
155 | ATA_DEV_ATA = 1, /* ATA device */ | |
156 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
157 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
158 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
159 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
160 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
161 | ATA_DEV_SEMB = 7, /* SEMB */ | |
162 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
163 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 164 | |
0c88758b | 165 | /* struct ata_link flags */ |
ae791c05 TH |
166 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
167 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
168 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
169 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 170 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 171 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
0c88758b | 172 | |
1da177e4 | 173 | /* struct ata_port flags */ |
949b38af | 174 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 175 | /* (doesn't imply presence) */ |
949b38af TH |
176 | ATA_FLAG_SATA = (1 << 1), |
177 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ | |
178 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ | |
179 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ | |
180 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ | |
181 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ | |
182 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
183 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
184 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
185 | * doesn't handle PIO interrupts */ | |
186 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
7395acb2 | 187 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 188 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 189 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 190 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 191 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 192 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
ca77329f | 193 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
949b38af | 194 | |
b51e9e5d TH |
195 | /* The following flag belongs to ap->pflags but is kept in |
196 | * ap->flags because it's referenced in many LLDs and will be | |
197 | * removed in not-too-distant future. | |
198 | */ | |
199 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
200 | ||
201 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 202 | |
b51e9e5d TH |
203 | /* struct ata_port pflags */ |
204 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
205 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
206 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
207 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
208 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
209 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ | |
210 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ | |
f4d6d004 | 211 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 212 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
949b38af | 213 | |
b51e9e5d | 214 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 215 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
c05e6ff0 | 216 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
949b38af TH |
217 | |
218 | /* struct ata_queued_cmd flags */ | |
219 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
001102d7 | 220 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
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 */ |
03faab78 | 225 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
e61e0672 | 226 | |
9ec957f2 TH |
227 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
228 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
229 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 230 | |
4e5ec5db | 231 | /* host set flags */ |
cca3974e | 232 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 233 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
9bec2e38 | 234 | |
b8b275ef TH |
235 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
236 | ||
1da177e4 | 237 | /* various lengths of time */ |
341c2c95 TH |
238 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
239 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ | |
240 | ATA_TMOUT_INTERNAL = 30000, | |
241 | ATA_TMOUT_INTERNAL_QUICK = 5000, | |
1da177e4 | 242 | |
88ff6eaf TH |
243 | /* FIXME: GoVault needs 2s but we can't afford that without |
244 | * parallel probing. 800ms is enough for iVDR disk | |
245 | * HHD424020F7SV00. Increase to 2secs when parallel probing | |
246 | * is in place. | |
247 | */ | |
341c2c95 | 248 | ATA_TMOUT_FF_WAIT = 800, |
88ff6eaf | 249 | |
705e76be TH |
250 | /* Spec mandates to wait for ">= 2ms" before checking status |
251 | * after reset. We wait 150ms, because that was the magic | |
252 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for | |
253 | * the period of time between when the ATA command register is | |
254 | * written, and then status is checked. Because waiting for | |
255 | * "a while" before checking status is fine, post SRST, we | |
256 | * perform this magic delay here as well. | |
257 | * | |
258 | * Old drivers/ide uses the 2mS rule and then waits for ready. | |
259 | */ | |
341c2c95 | 260 | ATA_WAIT_AFTER_RESET = 150, |
705e76be | 261 | |
9dadd45b TH |
262 | /* If PMP is supported, we have to do follow-up SRST. As some |
263 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are | |
264 | * advised to wait only for the following duration before | |
265 | * doing SRST. | |
266 | */ | |
341c2c95 | 267 | ATA_TMOUT_PMP_SRST_WAIT = 1000, |
9dadd45b | 268 | |
1da177e4 LT |
269 | /* ATA bus states */ |
270 | BUS_UNKNOWN = 0, | |
271 | BUS_DMA = 1, | |
272 | BUS_IDLE = 2, | |
273 | BUS_NOINTR = 3, | |
274 | BUS_NODATA = 4, | |
275 | BUS_TIMER = 5, | |
276 | BUS_PIO = 6, | |
277 | BUS_EDD = 7, | |
278 | BUS_IDENTIFY = 8, | |
279 | BUS_PACKET = 9, | |
280 | ||
281 | /* SATA port states */ | |
282 | PORT_UNKNOWN = 0, | |
283 | PORT_ENABLED = 1, | |
284 | PORT_DISABLED = 2, | |
285 | ||
286 | /* encoding various smaller bitmaps into a single | |
7dc951ae | 287 | * unsigned long bitmap |
1da177e4 | 288 | */ |
70cd071e TH |
289 | ATA_NR_PIO_MODES = 7, |
290 | ATA_NR_MWDMA_MODES = 5, | |
291 | ATA_NR_UDMA_MODES = 8, | |
1da7b0d0 TH |
292 | |
293 | ATA_SHIFT_PIO = 0, | |
70cd071e TH |
294 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
295 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, | |
296 | ||
cedc9a47 JG |
297 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
298 | ATA_DMA_PAD_SZ = 4, | |
949b38af | 299 | |
0c247c55 TH |
300 | /* ering size */ |
301 | ATA_ERING_SIZE = 32, | |
302 | ||
31cc23b3 TH |
303 | /* return values for ->qc_defer */ |
304 | ATA_DEFER_LINK = 1, | |
305 | ATA_DEFER_PORT = 2, | |
306 | ||
f3e81b19 TH |
307 | /* desc_len for ata_eh_info and context */ |
308 | ATA_EH_DESC_LEN = 80, | |
309 | ||
9be1e979 TH |
310 | /* reset / recovery action types */ |
311 | ATA_EH_REVALIDATE = (1 << 0), | |
cf480626 TH |
312 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
313 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ | |
314 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
f9df58cb | 315 | ATA_EH_ENABLE_LINK = (1 << 3), |
3ec25ebd | 316 | ATA_EH_LPM = (1 << 4), /* link power management action */ |
9be1e979 | 317 | |
9666f400 | 318 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
9be1e979 | 319 | |
f3e81b19 | 320 | /* ata_eh_info->flags */ |
abdda733 | 321 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
1cdaf534 TH |
322 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
323 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
abdda733 | 324 | |
0d64a233 TH |
325 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
326 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
327 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
328 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
329 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 330 | |
0d64a233 | 331 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d | 332 | |
a1e10f7e TH |
333 | /* max tries if error condition is still set after ->error_handler */ |
334 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 335 | |
14d2bac1 TH |
336 | /* how hard are we gonna try to probe/recover devices */ |
337 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 338 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
339 | ATA_EH_PMP_TRIES = 5, |
340 | ATA_EH_PMP_LINK_TRIES = 3, | |
341 | ||
bf1bff6f | 342 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
f5914a46 | 343 | |
93590859 AC |
344 | /* Horkage types. May be set by libata or controller on drives |
345 | (some horkage may be drive/controller pair dependant */ | |
346 | ||
347 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
348 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
349 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 350 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 351 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
50af2fa1 | 352 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
93328e11 | 353 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
ca77329f | 354 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
6bbfd53d | 355 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
2d3b8eea | 356 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
b3a70601 | 357 | |
2dcb407e | 358 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
359 | renumber */ |
360 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
361 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
362 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
ceb0c642 TH |
363 | |
364 | /* ATAPI command types */ | |
365 | ATAPI_READ = 0, /* READs */ | |
366 | ATAPI_WRITE = 1, /* WRITEs */ | |
367 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ | |
e52dcc48 TH |
368 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
369 | ATAPI_MISC = 4, /* the rest */ | |
624d5c51 TH |
370 | |
371 | /* Timing constants */ | |
372 | ATA_TIMING_SETUP = (1 << 0), | |
373 | ATA_TIMING_ACT8B = (1 << 1), | |
374 | ATA_TIMING_REC8B = (1 << 2), | |
375 | ATA_TIMING_CYC8B = (1 << 3), | |
376 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
377 | ATA_TIMING_CYC8B, | |
378 | ATA_TIMING_ACTIVE = (1 << 4), | |
379 | ATA_TIMING_RECOVER = (1 << 5), | |
380 | ATA_TIMING_CYCLE = (1 << 6), | |
381 | ATA_TIMING_UDMA = (1 << 7), | |
382 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | | |
383 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
384 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
385 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, | |
1da177e4 LT |
386 | }; |
387 | ||
7dc951ae TH |
388 | enum ata_xfer_mask { |
389 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) | |
390 | << ATA_SHIFT_PIO, | |
391 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) | |
392 | << ATA_SHIFT_MWDMA, | |
393 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) | |
394 | << ATA_SHIFT_UDMA, | |
395 | }; | |
396 | ||
14be71f4 | 397 | enum hsm_task_states { |
c56b14d2 | 398 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
399 | HSM_ST_FIRST, /* (waiting the device to) |
400 | write CDB or first data block */ | |
c56b14d2 AL |
401 | HSM_ST, /* (waiting the device to) transfer data */ |
402 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 403 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
404 | }; |
405 | ||
a7dac447 | 406 | enum ata_completion_errors { |
11a56d24 TH |
407 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
408 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
409 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
410 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
411 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
412 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
413 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
414 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
415 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 416 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 417 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
418 | }; |
419 | ||
1da177e4 LT |
420 | /* forward declarations */ |
421 | struct scsi_device; | |
422 | struct ata_port_operations; | |
423 | struct ata_port; | |
cc0680a5 | 424 | struct ata_link; |
1da177e4 LT |
425 | struct ata_queued_cmd; |
426 | ||
427 | /* typedefs */ | |
77853bf2 | 428 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
429 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
430 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 431 | unsigned long deadline); |
cc0680a5 | 432 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 433 | |
ca77329f KCA |
434 | /* |
435 | * host pm policy: If you alter this, you also need to alter libata-scsi.c | |
436 | * (for the ascii descriptions) | |
437 | */ | |
438 | enum link_pm { | |
439 | NOT_AVAILABLE, | |
440 | MIN_POWER, | |
441 | MAX_PERFORMANCE, | |
442 | MEDIUM_POWER, | |
443 | }; | |
ee959b00 | 444 | extern struct device_attribute dev_attr_link_power_management_policy; |
ca77329f | 445 | |
127102ae | 446 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 447 | struct ata_ioports { |
0d5ff566 TH |
448 | void __iomem *cmd_addr; |
449 | void __iomem *data_addr; | |
450 | void __iomem *error_addr; | |
451 | void __iomem *feature_addr; | |
452 | void __iomem *nsect_addr; | |
453 | void __iomem *lbal_addr; | |
454 | void __iomem *lbam_addr; | |
455 | void __iomem *lbah_addr; | |
456 | void __iomem *device_addr; | |
457 | void __iomem *status_addr; | |
458 | void __iomem *command_addr; | |
459 | void __iomem *altstatus_addr; | |
460 | void __iomem *ctl_addr; | |
461 | void __iomem *bmdma_addr; | |
462 | void __iomem *scr_addr; | |
1da177e4 | 463 | }; |
127102ae | 464 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 | 465 | |
cca3974e | 466 | struct ata_host { |
1da177e4 LT |
467 | spinlock_t lock; |
468 | struct device *dev; | |
0d5ff566 | 469 | void __iomem * const *iomap; |
1da177e4 LT |
470 | unsigned int n_ports; |
471 | void *private_data; | |
029cfd6b | 472 | struct ata_port_operations *ops; |
5444a6f4 | 473 | unsigned long flags; |
fafbae87 TH |
474 | #ifdef CONFIG_ATA_ACPI |
475 | acpi_handle acpi_handle; | |
476 | #endif | |
032af1ce | 477 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 478 | struct ata_port *ports[0]; |
1da177e4 LT |
479 | }; |
480 | ||
481 | struct ata_queued_cmd { | |
482 | struct ata_port *ap; | |
483 | struct ata_device *dev; | |
484 | ||
485 | struct scsi_cmnd *scsicmd; | |
486 | void (*scsidone)(struct scsi_cmnd *); | |
487 | ||
488 | struct ata_taskfile tf; | |
489 | u8 cdb[ATAPI_CDB_LEN]; | |
490 | ||
491 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
492 | unsigned int tag; | |
493 | unsigned int n_elem; | |
494 | ||
495 | int dma_dir; | |
496 | ||
5a5dbd18 | 497 | unsigned int sect_size; |
cedc9a47 | 498 | |
1da177e4 | 499 | unsigned int nbytes; |
aacda375 | 500 | unsigned int extrabytes; |
1da177e4 LT |
501 | unsigned int curbytes; |
502 | ||
87260216 | 503 | struct scatterlist *cursg; |
1da177e4 LT |
504 | unsigned int cursg_ofs; |
505 | ||
506 | struct scatterlist sgent; | |
1da177e4 | 507 | |
ff2aeb1e | 508 | struct scatterlist *sg; |
1da177e4 | 509 | |
a22e2eb0 | 510 | unsigned int err_mask; |
e61e0672 | 511 | struct ata_taskfile result_tf; |
1da177e4 LT |
512 | ata_qc_cb_t complete_fn; |
513 | ||
1da177e4 | 514 | void *private_data; |
1c50dc83 | 515 | void *lldd_task; |
1da177e4 LT |
516 | }; |
517 | ||
cca3974e | 518 | struct ata_port_stats { |
1da177e4 LT |
519 | unsigned long unhandled_irq; |
520 | unsigned long idle_irq; | |
521 | unsigned long rw_reqbuf; | |
522 | }; | |
523 | ||
0c247c55 | 524 | struct ata_ering_entry { |
3884f7b0 | 525 | unsigned int eflags; |
0c247c55 TH |
526 | unsigned int err_mask; |
527 | u64 timestamp; | |
528 | }; | |
529 | ||
530 | struct ata_ering { | |
531 | int cursor; | |
532 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
533 | }; | |
534 | ||
1da177e4 | 535 | struct ata_device { |
9af5c9c9 | 536 | struct ata_link *link; |
72fa4b74 | 537 | unsigned int devno; /* 0 or 1 */ |
1da177e4 | 538 | unsigned long flags; /* ATA_DFLAG_xxx */ |
75683fe7 | 539 | unsigned int horkage; /* List of broken features */ |
3edebac4 | 540 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
541 | #ifdef CONFIG_ATA_ACPI |
542 | acpi_handle acpi_handle; | |
398e0782 | 543 | union acpi_object *gtf_cache; |
fafbae87 | 544 | #endif |
72fa4b74 TH |
545 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
546 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 547 | unsigned int class; /* ATA_DEV_xxx */ |
e0a71752 | 548 | |
1da177e4 LT |
549 | u8 pio_mode; |
550 | u8 dma_mode; | |
551 | u8 xfer_mode; | |
552 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
553 | ||
8cbd6df1 AL |
554 | unsigned int multi_count; /* sectors count for |
555 | READ/WRITE MULTIPLE */ | |
b00eec1d | 556 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 557 | unsigned int cdb_len; |
8bf62ece | 558 | |
acf356b1 | 559 | /* per-dev xfer mask */ |
7dc951ae TH |
560 | unsigned long pio_mask; |
561 | unsigned long mwdma_mask; | |
562 | unsigned long udma_mask; | |
acf356b1 | 563 | |
8bf62ece AL |
564 | /* for CHS addressing */ |
565 | u16 cylinders; /* Number of cylinders */ | |
566 | u16 heads; /* Number of heads */ | |
567 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
568 | |
569 | /* error history */ | |
7d47e8d4 | 570 | int spdn_cnt; |
f7e98930 JG |
571 | struct ata_ering ering; |
572 | ||
573 | union { | |
574 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
575 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
576 | }; | |
1da177e4 LT |
577 | }; |
578 | ||
72fa4b74 TH |
579 | /* Offset into struct ata_device. Fields above it are maintained |
580 | * acress device init. Fields below are zeroed. | |
581 | */ | |
582 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
583 | ||
f3e81b19 TH |
584 | struct ata_eh_info { |
585 | struct ata_device *dev; /* offending device */ | |
586 | u32 serror; /* SError from LLDD */ | |
587 | unsigned int err_mask; /* port-wide err_mask */ | |
588 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 589 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 590 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 591 | |
abdda733 TH |
592 | unsigned int probe_mask; |
593 | ||
f3e81b19 TH |
594 | char desc[ATA_EH_DESC_LEN]; |
595 | int desc_len; | |
596 | }; | |
597 | ||
598 | struct ata_eh_context { | |
599 | struct ata_eh_info i; | |
600 | int tries[ATA_MAX_DEVICES]; | |
abdda733 TH |
601 | unsigned int classes[ATA_MAX_DEVICES]; |
602 | unsigned int did_probe_mask; | |
00115e0f TH |
603 | unsigned int saved_ncq_enabled; |
604 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; | |
f3e81b19 TH |
605 | }; |
606 | ||
64578a3d TH |
607 | struct ata_acpi_drive |
608 | { | |
609 | u32 pio; | |
610 | u32 dma; | |
611 | } __packed; | |
612 | ||
613 | struct ata_acpi_gtm { | |
614 | struct ata_acpi_drive drive[2]; | |
615 | u32 flags; | |
616 | } __packed; | |
617 | ||
9af5c9c9 TH |
618 | struct ata_link { |
619 | struct ata_port *ap; | |
8989805d | 620 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
621 | |
622 | unsigned int active_tag; /* active tag on this link */ | |
623 | u32 sactive; /* active NCQ commands */ | |
624 | ||
0c88758b TH |
625 | unsigned int flags; /* ATA_LFLAG_xxx */ |
626 | ||
9af5c9c9 TH |
627 | unsigned int hw_sata_spd_limit; |
628 | unsigned int sata_spd_limit; | |
629 | unsigned int sata_spd; /* current SATA PHY speed */ | |
630 | ||
631 | /* record runtime error info, protected by host_set lock */ | |
632 | struct ata_eh_info eh_info; | |
633 | /* EH context */ | |
634 | struct ata_eh_context eh_context; | |
635 | ||
636 | struct ata_device device[ATA_MAX_DEVICES]; | |
637 | }; | |
638 | ||
1da177e4 | 639 | struct ata_port { |
cca3974e | 640 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
029cfd6b | 641 | struct ata_port_operations *ops; |
ba6a1308 | 642 | spinlock_t *lock; |
1da177e4 | 643 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 644 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
645 | unsigned int print_id; /* user visible unique port ID */ |
646 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
647 | |
648 | struct ata_prd *prd; /* our SG list */ | |
649 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
650 | ||
127102ae | 651 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 652 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
127102ae | 653 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 LT |
654 | |
655 | u8 ctl; /* cache of ATA control register */ | |
656 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
657 | unsigned int pio_mask; |
658 | unsigned int mwdma_mask; | |
659 | unsigned int udma_mask; | |
660 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
661 | |
662 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
6cec4a39 | 663 | unsigned long qc_allocated; |
dedaf2b0 | 664 | unsigned int qc_active; |
da917d69 | 665 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 666 | |
9af5c9c9 | 667 | struct ata_link link; /* host default link */ |
1da177e4 | 668 | |
8989805d TH |
669 | int nr_pmp_links; /* nr of available PMP links */ |
670 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 671 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 672 | |
cca3974e JG |
673 | struct ata_port_stats stats; |
674 | struct ata_host *host; | |
2f1f610b | 675 | struct device *dev; |
1da177e4 | 676 | |
65f27f38 | 677 | void *port_task_data; |
52bad64d DH |
678 | struct delayed_work port_task; |
679 | struct delayed_work hotplug_task; | |
3b01b8af | 680 | struct work_struct scsi_rescan_task; |
86e45b6b | 681 | |
14be71f4 | 682 | unsigned int hsm_task_state; |
1da177e4 | 683 | |
bfd60579 | 684 | u32 msg_enable; |
a72ec4ce | 685 | struct list_head eh_done_q; |
c6cf9e99 | 686 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 687 | int eh_tries; |
bfd60579 | 688 | |
500530f6 TH |
689 | pm_message_t pm_mesg; |
690 | int *pm_result; | |
ca77329f | 691 | enum link_pm pm_policy; |
500530f6 | 692 | |
5ddf24c5 TH |
693 | struct timer_list fastdrain_timer; |
694 | unsigned long fastdrain_cnt; | |
695 | ||
1da177e4 | 696 | void *private_data; |
fe635c7e | 697 | |
fafbae87 TH |
698 | #ifdef CONFIG_ATA_ACPI |
699 | acpi_handle acpi_handle; | |
c05e6ff0 | 700 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
fafbae87 | 701 | #endif |
fe635c7e | 702 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
703 | }; |
704 | ||
029cfd6b TH |
705 | /* The following initializer overrides a method to NULL whether one of |
706 | * its parent has the method defined or not. This is equivalent to | |
707 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant | |
708 | * expression and thus can't be used as an initializer. | |
709 | */ | |
710 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) | |
711 | ||
1da177e4 | 712 | struct ata_port_operations { |
c1bc899f TH |
713 | /* |
714 | * Command execution | |
715 | */ | |
716 | int (*qc_defer)(struct ata_queued_cmd *qc); | |
717 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); | |
718 | void (*qc_prep)(struct ata_queued_cmd *qc); | |
719 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); | |
22183bf5 | 720 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
1da177e4 | 721 | |
c1bc899f TH |
722 | /* |
723 | * Configuration and exception handling | |
724 | */ | |
725 | int (*cable_detect)(struct ata_port *ap); | |
726 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); | |
727 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); | |
728 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); | |
729 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); | |
1da177e4 | 730 | |
c1bc899f | 731 | void (*dev_config)(struct ata_device *dev); |
1da177e4 | 732 | |
c1bc899f TH |
733 | void (*freeze)(struct ata_port *ap); |
734 | void (*thaw)(struct ata_port *ap); | |
a1efdaba TH |
735 | ata_prereset_fn_t prereset; |
736 | ata_reset_fn_t softreset; | |
737 | ata_reset_fn_t hardreset; | |
738 | ata_postreset_fn_t postreset; | |
739 | ata_prereset_fn_t pmp_prereset; | |
740 | ata_reset_fn_t pmp_softreset; | |
741 | ata_reset_fn_t pmp_hardreset; | |
742 | ata_postreset_fn_t pmp_postreset; | |
c1bc899f TH |
743 | void (*error_handler)(struct ata_port *ap); |
744 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); | |
745 | ||
746 | /* | |
747 | * Optional features | |
748 | */ | |
749 | int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val); | |
750 | int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val); | |
751 | void (*pmp_attach)(struct ata_port *ap); | |
752 | void (*pmp_detach)(struct ata_port *ap); | |
753 | int (*enable_pm)(struct ata_port *ap, enum link_pm policy); | |
754 | void (*disable_pm)(struct ata_port *ap); | |
755 | ||
756 | /* | |
757 | * Start, stop, suspend and resume | |
758 | */ | |
759 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); | |
760 | int (*port_resume)(struct ata_port *ap); | |
761 | int (*port_start)(struct ata_port *ap); | |
762 | void (*port_stop)(struct ata_port *ap); | |
763 | void (*host_stop)(struct ata_host *host); | |
764 | ||
127102ae | 765 | #ifdef CONFIG_ATA_SFF |
c1bc899f TH |
766 | /* |
767 | * SFF / taskfile oriented ops | |
768 | */ | |
5682ed33 TH |
769 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
770 | u8 (*sff_check_status)(struct ata_port *ap); | |
771 | u8 (*sff_check_altstatus)(struct ata_port *ap); | |
772 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); | |
773 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); | |
774 | void (*sff_exec_command)(struct ata_port *ap, | |
775 | const struct ata_taskfile *tf); | |
776 | unsigned int (*sff_data_xfer)(struct ata_device *dev, | |
777 | unsigned char *buf, unsigned int buflen, int rw); | |
778 | u8 (*sff_irq_on)(struct ata_port *); | |
779 | void (*sff_irq_clear)(struct ata_port *); | |
780 | ||
c1bc899f TH |
781 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
782 | void (*bmdma_start)(struct ata_queued_cmd *qc); | |
783 | void (*bmdma_stop)(struct ata_queued_cmd *qc); | |
784 | u8 (*bmdma_status)(struct ata_port *ap); | |
127102ae | 785 | #endif /* CONFIG_ATA_SFF */ |
c1bc899f TH |
786 | |
787 | /* | |
788 | * Obsolete | |
9ec957f2 | 789 | */ |
c1bc899f TH |
790 | void (*phy_reset)(struct ata_port *ap); |
791 | void (*eng_timeout)(struct ata_port *ap); | |
029cfd6b TH |
792 | |
793 | /* | |
794 | * ->inherits must be the last field and all the preceding | |
795 | * fields must be pointers. | |
796 | */ | |
797 | const struct ata_port_operations *inherits; | |
1da177e4 LT |
798 | }; |
799 | ||
800 | struct ata_port_info { | |
cca3974e | 801 | unsigned long flags; |
0c88758b | 802 | unsigned long link_flags; |
1da177e4 LT |
803 | unsigned long pio_mask; |
804 | unsigned long mwdma_mask; | |
805 | unsigned long udma_mask; | |
029cfd6b | 806 | struct ata_port_operations *port_ops; |
e99f8b5e | 807 | void *private_data; |
1da177e4 LT |
808 | }; |
809 | ||
452503f9 AC |
810 | struct ata_timing { |
811 | unsigned short mode; /* ATA mode */ | |
812 | unsigned short setup; /* t1 */ | |
813 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
814 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
815 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
816 | unsigned short active; /* t2 or tD */ | |
817 | unsigned short recover; /* t2i or tK */ | |
818 | unsigned short cycle; /* t0 */ | |
819 | unsigned short udma; /* t2CYCTYP/2 */ | |
820 | }; | |
821 | ||
624d5c51 TH |
822 | /* |
823 | * Core layer - drivers/ata/libata-core.c | |
824 | */ | |
e9c83914 TH |
825 | extern const unsigned long sata_deb_timing_normal[]; |
826 | extern const unsigned long sata_deb_timing_hotplug[]; | |
827 | extern const unsigned long sata_deb_timing_long[]; | |
828 | ||
029cfd6b | 829 | extern struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 830 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 831 | |
e9c83914 TH |
832 | static inline const unsigned long * |
833 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
834 | { | |
835 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
836 | return sata_deb_timing_hotplug; | |
837 | else | |
838 | return sata_deb_timing_normal; | |
839 | } | |
d7bb4cc7 | 840 | |
dd5b06c4 TH |
841 | static inline int ata_port_is_dummy(struct ata_port *ap) |
842 | { | |
843 | return ap->ops == &ata_dummy_port_ops; | |
844 | } | |
845 | ||
1da177e4 | 846 | extern void ata_port_probe(struct ata_port *); |
936fd732 | 847 | extern int sata_set_spd(struct ata_link *link); |
0aa1113d | 848 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
aa2731ad TH |
849 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
850 | int (*check_ready)(struct ata_link *link)); | |
936fd732 TH |
851 | extern int sata_link_debounce(struct ata_link *link, |
852 | const unsigned long *params, unsigned long deadline); | |
853 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
854 | unsigned long deadline); | |
cc0680a5 | 855 | extern int sata_link_hardreset(struct ata_link *link, |
9dadd45b TH |
856 | const unsigned long *timing, unsigned long deadline, |
857 | bool *online, int (*check_ready)(struct ata_link *)); | |
57c9efdf TH |
858 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
859 | unsigned long deadline); | |
203c75b8 | 860 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 | 861 | extern void ata_port_disable(struct ata_port *); |
2855568b | 862 | |
f3187195 | 863 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
864 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
865 | const struct ata_port_info * const * ppi, int n_ports); | |
ecef7253 | 866 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
867 | extern int ata_host_register(struct ata_host *host, |
868 | struct scsi_host_template *sht); | |
f5cda257 TH |
869 | extern int ata_host_activate(struct ata_host *host, int irq, |
870 | irq_handler_t irq_handler, unsigned long irq_flags, | |
871 | struct scsi_host_template *sht); | |
0529c159 | 872 | extern void ata_host_detach(struct ata_host *host); |
cca3974e | 873 | extern void ata_host_init(struct ata_host *, struct device *, |
029cfd6b | 874 | unsigned long, struct ata_port_operations *); |
193515d5 | 875 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
876 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
877 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
80289167 | 878 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 879 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
880 | struct ata_port_info *, struct Scsi_Host *); |
881 | extern int ata_sas_port_init(struct ata_port *); | |
882 | extern int ata_sas_port_start(struct ata_port *ap); | |
883 | extern void ata_sas_port_stop(struct ata_port *ap); | |
884 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
885 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
886 | struct ata_port *ap); | |
936fd732 TH |
887 | extern int sata_scr_valid(struct ata_link *link); |
888 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
889 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
890 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
891 | extern int ata_link_online(struct ata_link *link); | |
892 | extern int ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 893 | #ifdef CONFIG_PM |
cca3974e JG |
894 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
895 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 896 | #endif |
67846b30 | 897 | extern int ata_ratelimit(void); |
c22daff4 | 898 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
341c2c95 | 899 | unsigned long interval, unsigned long timeout); |
436d34b3 | 900 | extern int atapi_cmd_type(u8 opcode); |
9977126c TH |
901 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
902 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 903 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
7dc951ae TH |
904 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
905 | unsigned long mwdma_mask, unsigned long udma_mask); | |
906 | extern void ata_unpack_xfermask(unsigned long xfer_mask, | |
907 | unsigned long *pio_mask, unsigned long *mwdma_mask, | |
908 | unsigned long *udma_mask); | |
909 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); | |
910 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); | |
911 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); | |
912 | extern const char *ata_mode_string(unsigned long xfer_mask); | |
913 | extern unsigned long ata_id_xfermask(const u16 *id); | |
2dcb407e | 914 | extern int ata_port_start(struct ata_port *ap); |
31cc23b3 | 915 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
e46834cd | 916 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 LT |
917 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
918 | unsigned int n_elem); | |
057ace5e | 919 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 920 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
921 | extern void ata_id_string(const u16 *id, unsigned char *s, |
922 | unsigned int ofs, unsigned int len); | |
923 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
924 | unsigned int ofs, unsigned int len); | |
f686bcb8 | 925 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
79f97dad | 926 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
3373efd8 | 927 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
928 | void (*done)(struct scsi_cmnd *)); |
929 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
930 | struct block_device *bdev, | |
931 | sector_t capacity, int geom[]); | |
932 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 933 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
934 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
935 | int queue_depth); | |
3373efd8 | 936 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 937 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
1da177e4 | 938 | |
be0d18df AC |
939 | extern int ata_cable_40wire(struct ata_port *ap); |
940 | extern int ata_cable_80wire(struct ata_port *ap); | |
941 | extern int ata_cable_sata(struct ata_port *ap); | |
c88f90c3 | 942 | extern int ata_cable_ignore(struct ata_port *ap); |
be0d18df AC |
943 | extern int ata_cable_unknown(struct ata_port *ap); |
944 | ||
624d5c51 | 945 | /* Timing helpers */ |
1bc4ccff | 946 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
6357357c | 947 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
452503f9 AC |
948 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
949 | struct ata_timing *, int, int); | |
950 | extern void ata_timing_merge(const struct ata_timing *, | |
951 | const struct ata_timing *, struct ata_timing *, | |
952 | unsigned int); | |
a0f79b92 | 953 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
452503f9 | 954 | |
624d5c51 TH |
955 | /* PCI */ |
956 | #ifdef CONFIG_PCI | |
957 | struct pci_dev; | |
958 | ||
959 | struct pci_bits { | |
960 | unsigned int reg; /* PCI config register to read */ | |
961 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
962 | unsigned long mask; | |
963 | unsigned long val; | |
452503f9 AC |
964 | }; |
965 | ||
624d5c51 TH |
966 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
967 | extern void ata_pci_remove_one(struct pci_dev *pdev); | |
968 | ||
969 | #ifdef CONFIG_PM | |
970 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
971 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
972 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
973 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
974 | #endif /* CONFIG_PM */ | |
975 | #endif /* CONFIG_PCI */ | |
976 | ||
977 | /* | |
978 | * ACPI - drivers/ata/libata-acpi.c | |
979 | */ | |
e1ddb4b6 | 980 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 TH |
981 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
982 | { | |
983 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) | |
984 | return &ap->__acpi_init_gtm; | |
985 | return NULL; | |
986 | } | |
0d02f0b2 TH |
987 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
988 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); | |
7c77fa4d TH |
989 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
990 | const struct ata_acpi_gtm *gtm); | |
021ee9a6 | 991 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
e1ddb4b6 | 992 | #else |
c05e6ff0 TH |
993 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
994 | { | |
995 | return NULL; | |
996 | } | |
7c77fa4d TH |
997 | |
998 | static inline int ata_acpi_stm(const struct ata_port *ap, | |
999 | struct ata_acpi_gtm *stm) | |
1000 | { | |
1001 | return -ENOSYS; | |
1002 | } | |
1003 | ||
1004 | static inline int ata_acpi_gtm(const struct ata_port *ap, | |
1005 | struct ata_acpi_gtm *stm) | |
1006 | { | |
1007 | return -ENOSYS; | |
1008 | } | |
1009 | ||
1010 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, | |
1011 | const struct ata_acpi_gtm *gtm) | |
1012 | { | |
1013 | return 0; | |
1014 | } | |
021ee9a6 TH |
1015 | |
1016 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, | |
1017 | const struct ata_acpi_gtm *gtm) | |
1018 | { | |
1019 | return 0; | |
1020 | } | |
e1ddb4b6 | 1021 | #endif |
1da177e4 | 1022 | |
ece1d636 | 1023 | /* |
624d5c51 | 1024 | * EH - drivers/ata/libata-eh.c |
ece1d636 | 1025 | */ |
7b70fc03 | 1026 | extern void ata_port_schedule_eh(struct ata_port *ap); |
dbd82616 | 1027 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1028 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1029 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1030 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1031 | |
1032 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1033 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1034 | |
ece1d636 TH |
1035 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1036 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
10acf3b0 | 1037 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
ece1d636 | 1038 | |
f5914a46 TH |
1039 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1040 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1041 | ata_postreset_fn_t postreset); | |
a1efdaba | 1042 | extern void ata_std_error_handler(struct ata_port *ap); |
022bdb07 | 1043 | |
68d1d07b TH |
1044 | /* |
1045 | * Base operations to inherit from and initializers for sht | |
1046 | * | |
1047 | * Operations | |
1048 | * | |
1049 | * base : Common to all libata drivers. | |
1050 | * sata : SATA controllers w/ native interface. | |
1051 | * pmp : SATA controllers w/ PMP support. | |
1052 | * sff : SFF ATA controllers w/o BMDMA support. | |
1053 | * bmdma : SFF ATA controllers w/ BMDMA support. | |
1054 | * | |
1055 | * sht initializers | |
1056 | * | |
1057 | * BASE : Common to all libata drivers. The user must set | |
1058 | * sg_tablesize and dma_boundary. | |
1059 | * PIO : SFF ATA controllers w/ only PIO support. | |
1060 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and | |
1061 | * dma_boundary are set to BMDMA limits. | |
1062 | * NCQ : SATA controllers supporting NCQ. The user must set | |
1063 | * sg_tablesize, dma_boundary and can_queue. | |
1064 | */ | |
1065 | extern const struct ata_port_operations ata_base_port_ops; | |
1066 | extern const struct ata_port_operations sata_port_ops; | |
68d1d07b TH |
1067 | |
1068 | #define ATA_BASE_SHT(drv_name) \ | |
1069 | .module = THIS_MODULE, \ | |
1070 | .name = drv_name, \ | |
1071 | .ioctl = ata_scsi_ioctl, \ | |
1072 | .queuecommand = ata_scsi_queuecmd, \ | |
1073 | .can_queue = ATA_DEF_QUEUE, \ | |
1074 | .this_id = ATA_SHT_THIS_ID, \ | |
1075 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ | |
1076 | .emulated = ATA_SHT_EMULATED, \ | |
1077 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ | |
1078 | .proc_name = drv_name, \ | |
1079 | .slave_configure = ata_scsi_slave_config, \ | |
1080 | .slave_destroy = ata_scsi_slave_destroy, \ | |
1081 | .bios_param = ata_std_bios_param | |
1082 | ||
68d1d07b TH |
1083 | #define ATA_NCQ_SHT(drv_name) \ |
1084 | ATA_BASE_SHT(drv_name), \ | |
1085 | .change_queue_depth = ata_scsi_change_queue_depth | |
1086 | ||
071f44b1 TH |
1087 | /* |
1088 | * PMP helpers | |
1089 | */ | |
88fcd562 | 1090 | #ifdef CONFIG_SATA_PMP |
071f44b1 TH |
1091 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1092 | { | |
1093 | return ap->flags & ATA_FLAG_PMP; | |
1094 | } | |
1095 | ||
1096 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1097 | { | |
1098 | return ap->nr_pmp_links != 0; | |
1099 | } | |
1100 | ||
1101 | static inline int ata_is_host_link(const struct ata_link *link) | |
1102 | { | |
1103 | return link == &link->ap->link; | |
1104 | } | |
88fcd562 TH |
1105 | #else /* CONFIG_SATA_PMP */ |
1106 | static inline bool sata_pmp_supported(struct ata_port *ap) | |
1107 | { | |
1108 | return false; | |
1109 | } | |
1110 | ||
1111 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1112 | { | |
1113 | return false; | |
1114 | } | |
1115 | ||
1116 | static inline int ata_is_host_link(const struct ata_link *link) | |
1117 | { | |
1118 | return 1; | |
1119 | } | |
1120 | #endif /* CONFIG_SATA_PMP */ | |
071f44b1 TH |
1121 | |
1122 | static inline int sata_srst_pmp(struct ata_link *link) | |
1123 | { | |
1124 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) | |
1125 | return SATA_PMP_CTRL_PORT; | |
1126 | return link->pmp; | |
1127 | } | |
1128 | ||
61440db6 TH |
1129 | /* |
1130 | * printk helpers | |
1131 | */ | |
1132 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
c2e366a1 | 1133 | printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) |
61440db6 | 1134 | |
8989805d | 1135 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
071f44b1 | 1136 | if (sata_pmp_attached((link)->ap)) \ |
c2e366a1 | 1137 | printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ |
8989805d TH |
1138 | (link)->pmp , ##args); \ |
1139 | else \ | |
c2e366a1 | 1140 | printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ |
8989805d | 1141 | } while(0) |
9af5c9c9 | 1142 | |
61440db6 | 1143 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
c2e366a1 | 1144 | printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ |
8989805d | 1145 | (dev)->link->pmp + (dev)->devno , ##args) |
1da177e4 | 1146 | |
f3e81b19 TH |
1147 | /* |
1148 | * ata_eh_info helpers | |
1149 | */ | |
cb94c1cf TH |
1150 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1151 | __attribute__ ((format (printf, 2, 3))); | |
1152 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1153 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1154 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1155 | |
c0b6c037 TH |
1156 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1157 | { | |
b558eddd | 1158 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
f8f1e1cc | 1159 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
b558eddd | 1160 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1161 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1162 | } | |
1163 | ||
cbcdd875 TH |
1164 | /* |
1165 | * port description helpers | |
1166 | */ | |
1167 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1168 | __attribute__ ((format (printf, 2, 3))); | |
1169 | #ifdef CONFIG_PCI | |
1170 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1171 | const char *name); | |
1172 | #endif | |
1173 | ||
1da177e4 LT |
1174 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1175 | { | |
1176 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1177 | } | |
1178 | ||
2ab7db1f TH |
1179 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1180 | { | |
83c063dd | 1181 | return tag == ATA_TAG_INTERNAL; |
2ab7db1f TH |
1182 | } |
1183 | ||
5806db22 TH |
1184 | /* |
1185 | * device helpers | |
1186 | */ | |
e1211e3f | 1187 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1188 | { |
e0a71752 TH |
1189 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1190 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1191 | } |
1192 | ||
e1211e3f | 1193 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1194 | { |
e0a71752 TH |
1195 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1196 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1197 | } |
1198 | ||
002c8054 TH |
1199 | static inline unsigned int ata_class_absent(unsigned int class) |
1200 | { | |
1201 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1202 | } | |
1203 | ||
e1211e3f TH |
1204 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1205 | { | |
1206 | return ata_class_enabled(dev->class); | |
1207 | } | |
1208 | ||
1209 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1210 | { | |
1211 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1212 | } |
1213 | ||
002c8054 TH |
1214 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1215 | { | |
1216 | return ata_class_absent(dev->class); | |
1217 | } | |
1218 | ||
5806db22 | 1219 | /* |
f58229f8 | 1220 | * link helpers |
5806db22 | 1221 | */ |
f58229f8 | 1222 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1223 | { |
8989805d | 1224 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1225 | return 2; |
1226 | return 1; | |
1227 | } | |
1228 | ||
da917d69 TH |
1229 | static inline int ata_link_active(struct ata_link *link) |
1230 | { | |
1231 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1232 | } | |
1233 | ||
8989805d TH |
1234 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
1235 | { | |
071f44b1 | 1236 | if (sata_pmp_attached(ap)) |
8989805d TH |
1237 | return ap->pmp_link; |
1238 | return &ap->link; | |
1239 | } | |
1240 | ||
1241 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) | |
1242 | { | |
1243 | struct ata_port *ap = link->ap; | |
1244 | ||
071f44b1 TH |
1245 | if (ata_is_host_link(link)) { |
1246 | if (!sata_pmp_attached(ap)) | |
8989805d TH |
1247 | return NULL; |
1248 | return ap->pmp_link; | |
1249 | } | |
1250 | ||
5d44b414 | 1251 | if (++link < ap->nr_pmp_links + ap->pmp_link) |
8989805d TH |
1252 | return link; |
1253 | return NULL; | |
1254 | } | |
1255 | ||
1256 | #define __ata_port_for_each_link(lk, ap) \ | |
1257 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) | |
1258 | ||
1259 | #define ata_port_for_each_link(link, ap) \ | |
1260 | for ((link) = ata_port_first_link(ap); (link); \ | |
1261 | (link) = ata_port_next_link(link)) | |
f58229f8 TH |
1262 | |
1263 | #define ata_link_for_each_dev(dev, link) \ | |
1264 | for ((dev) = (link)->device; \ | |
1265 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ | |
1266 | (dev)++) | |
1267 | ||
1268 | #define ata_link_for_each_dev_reverse(dev, link) \ | |
1269 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ | |
1270 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) | |
5806db22 | 1271 | |
6d1245bf TH |
1272 | /** |
1273 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1274 | * @dev: ATA device to test for | |
1275 | * | |
1276 | * LOCKING: | |
1277 | * spin_lock_irqsave(host lock) | |
1278 | * | |
1279 | * RETURNS: | |
1280 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1281 | */ | |
1282 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1283 | { | |
1284 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1285 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1286 | } | |
0baab86b | 1287 | |
1da177e4 LT |
1288 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1289 | { | |
1290 | qc->tf.ctl |= ATA_NIEN; | |
1291 | } | |
1292 | ||
f69499f4 TH |
1293 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1294 | unsigned int tag) | |
1da177e4 LT |
1295 | { |
1296 | if (likely(ata_tag_valid(tag))) | |
1297 | return &ap->qcmd[tag]; | |
1298 | return NULL; | |
1299 | } | |
1300 | ||
f69499f4 TH |
1301 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1302 | unsigned int tag) | |
1303 | { | |
1304 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1305 | ||
1306 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1307 | return qc; | |
1308 | ||
1309 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1310 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1311 | return qc; | |
1312 | ||
1313 | return NULL; | |
1314 | } | |
1315 | ||
aacda375 TH |
1316 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1317 | { | |
1318 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); | |
1319 | } | |
1320 | ||
3373efd8 | 1321 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1322 | { |
1323 | memset(tf, 0, sizeof(*tf)); | |
1324 | ||
9af5c9c9 | 1325 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1326 | if (dev->devno == 0) |
1da177e4 LT |
1327 | tf->device = ATA_DEVICE_OBS; |
1328 | else | |
1329 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1330 | } | |
1331 | ||
2c13b7ce JG |
1332 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1333 | { | |
501e0c50 | 1334 | qc->dma_dir = DMA_NONE; |
ff2aeb1e | 1335 | qc->sg = NULL; |
2c13b7ce | 1336 | qc->flags = 0; |
87260216 JA |
1337 | qc->cursg = NULL; |
1338 | qc->cursg_ofs = 0; | |
aacda375 | 1339 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
7a801184 | 1340 | qc->n_elem = 0; |
a22e2eb0 | 1341 | qc->err_mask = 0; |
5a5dbd18 | 1342 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1343 | |
3373efd8 | 1344 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1345 | |
1346 | /* init result_tf such that it indicates normal completion */ | |
1347 | qc->result_tf.command = ATA_DRDY; | |
1348 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1349 | } |
1350 | ||
057ace5e | 1351 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1352 | { |
1353 | return ata_id_wcache_enabled(dev->id) || | |
1354 | ata_id_has_flush(dev->id) || | |
1355 | ata_id_has_flush_ext(dev->id); | |
1356 | } | |
1357 | ||
a7dac447 JG |
1358 | static inline unsigned int ac_err_mask(u8 status) |
1359 | { | |
3655d1d3 | 1360 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1361 | return AC_ERR_HSM; |
a7dac447 JG |
1362 | if (status & (ATA_ERR | ATA_DF)) |
1363 | return AC_ERR_DEV; | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | static inline unsigned int __ac_err_mask(u8 status) | |
1368 | { | |
1369 | unsigned int mask = ac_err_mask(status); | |
1370 | if (mask == 0) | |
1371 | return AC_ERR_OTHER; | |
1372 | return mask; | |
1373 | } | |
1374 | ||
35bb94b1 JG |
1375 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1376 | { | |
4911487a | 1377 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1378 | } |
1379 | ||
78ab88f0 TH |
1380 | static inline int ata_check_ready(u8 status) |
1381 | { | |
005b1f74 JG |
1382 | if (!(status & ATA_BUSY)) |
1383 | return 1; | |
78ab88f0 TH |
1384 | |
1385 | /* 0xff indicates either no device or device not ready */ | |
1386 | if (status == 0xff) | |
1387 | return -ENODEV; | |
1388 | ||
005b1f74 | 1389 | return 0; |
78ab88f0 TH |
1390 | } |
1391 | ||
341c2c95 TH |
1392 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
1393 | unsigned long timeout_msecs) | |
1394 | { | |
1395 | return from_jiffies + msecs_to_jiffies(timeout_msecs); | |
1396 | } | |
1397 | ||
48515f6c TH |
1398 | |
1399 | /************************************************************************** | |
1400 | * PMP - drivers/ata/libata-pmp.c | |
1401 | */ | |
88fcd562 TH |
1402 | #ifdef CONFIG_SATA_PMP |
1403 | ||
48515f6c TH |
1404 | extern const struct ata_port_operations sata_pmp_port_ops; |
1405 | ||
1406 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); | |
1407 | extern void sata_pmp_error_handler(struct ata_port *ap); | |
1408 | ||
88fcd562 TH |
1409 | #else /* CONFIG_SATA_PMP */ |
1410 | ||
1411 | #define sata_pmp_port_ops sata_port_ops | |
1412 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer | |
1413 | #define sata_pmp_error_handler ata_std_error_handler | |
1414 | ||
1415 | #endif /* CONFIG_SATA_PMP */ | |
1416 | ||
48515f6c | 1417 | |
624d5c51 TH |
1418 | /************************************************************************** |
1419 | * SFF - drivers/ata/libata-sff.c | |
1420 | */ | |
127102ae TH |
1421 | #ifdef CONFIG_ATA_SFF |
1422 | ||
624d5c51 TH |
1423 | extern const struct ata_port_operations ata_sff_port_ops; |
1424 | extern const struct ata_port_operations ata_bmdma_port_ops; | |
1425 | ||
1426 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ | |
1427 | #define ATA_PIO_SHT(drv_name) \ | |
1428 | ATA_BASE_SHT(drv_name), \ | |
1429 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1430 | .dma_boundary = ATA_DMA_BOUNDARY | |
1431 | ||
1432 | #define ATA_BMDMA_SHT(drv_name) \ | |
1433 | ATA_BASE_SHT(drv_name), \ | |
1434 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1435 | .dma_boundary = ATA_DMA_BOUNDARY | |
1436 | ||
9363c382 TH |
1437 | extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); |
1438 | extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); | |
1439 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); | |
1440 | extern u8 ata_sff_check_status(struct ata_port *ap); | |
a57c1bad AC |
1441 | extern void ata_sff_pause(struct ata_port *ap); |
1442 | extern void ata_sff_dma_pause(struct ata_port *ap); | |
9363c382 TH |
1443 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
1444 | unsigned long timeout_pat, unsigned long timeout); | |
705e76be | 1445 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
9363c382 TH |
1446 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1447 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); | |
1448 | extern void ata_sff_exec_command(struct ata_port *ap, | |
1449 | const struct ata_taskfile *tf); | |
1450 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, | |
624d5c51 | 1451 | unsigned char *buf, unsigned int buflen, int rw); |
9363c382 | 1452 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
624d5c51 | 1453 | unsigned char *buf, unsigned int buflen, int rw); |
9363c382 TH |
1454 | extern u8 ata_sff_irq_on(struct ata_port *ap); |
1455 | extern void ata_sff_irq_clear(struct ata_port *ap); | |
1456 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, | |
1457 | u8 status, int in_wq); | |
1458 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); | |
22183bf5 | 1459 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
9363c382 TH |
1460 | extern unsigned int ata_sff_host_intr(struct ata_port *ap, |
1461 | struct ata_queued_cmd *qc); | |
1462 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); | |
1463 | extern void ata_sff_freeze(struct ata_port *ap); | |
1464 | extern void ata_sff_thaw(struct ata_port *ap); | |
1465 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); | |
1466 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, | |
1467 | u8 *r_err); | |
705e76be TH |
1468 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
1469 | unsigned long deadline); | |
9363c382 | 1470 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
624d5c51 | 1471 | unsigned long deadline); |
9363c382 TH |
1472 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1473 | unsigned long deadline); | |
1474 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); | |
1475 | extern void ata_sff_error_handler(struct ata_port *ap); | |
1476 | extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); | |
624d5c51 | 1477 | extern int ata_sff_port_start(struct ata_port *ap); |
9363c382 TH |
1478 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
1479 | extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, | |
1480 | unsigned long xfer_mask); | |
624d5c51 TH |
1481 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1482 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
1483 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); | |
1484 | extern u8 ata_bmdma_status(struct ata_port *ap); | |
1485 | extern void ata_bus_reset(struct ata_port *ap); | |
1486 | ||
1487 | #ifdef CONFIG_PCI | |
9363c382 TH |
1488 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
1489 | extern int ata_pci_bmdma_init(struct ata_host *host); | |
1490 | extern int ata_pci_sff_init_host(struct ata_host *host); | |
1491 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, | |
624d5c51 TH |
1492 | const struct ata_port_info * const * ppi, |
1493 | struct ata_host **r_host); | |
9363c382 | 1494 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
624d5c51 TH |
1495 | irq_handler_t irq_handler, |
1496 | struct scsi_host_template *sht); | |
9363c382 TH |
1497 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
1498 | const struct ata_port_info * const * ppi, | |
1499 | struct scsi_host_template *sht, void *host_priv); | |
624d5c51 TH |
1500 | #endif /* CONFIG_PCI */ |
1501 | ||
624d5c51 | 1502 | /** |
9363c382 | 1503 | * ata_sff_busy_wait - Wait for a port status register |
624d5c51 TH |
1504 | * @ap: Port to wait for. |
1505 | * @bits: bits that must be clear | |
1506 | * @max: number of 10uS waits to perform | |
1507 | * | |
1508 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1509 | * status register to be cleared. | |
1510 | * Returns final value of status register. | |
1511 | * | |
1512 | * LOCKING: | |
1513 | * Inherited from caller. | |
1514 | */ | |
9363c382 TH |
1515 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1516 | unsigned int max) | |
624d5c51 TH |
1517 | { |
1518 | u8 status; | |
1519 | ||
1520 | do { | |
1521 | udelay(10); | |
5682ed33 | 1522 | status = ap->ops->sff_check_status(ap); |
624d5c51 TH |
1523 | max--; |
1524 | } while (status != 0xff && (status & bits) && (max > 0)); | |
1525 | ||
1526 | return status; | |
1527 | } | |
1528 | ||
1529 | /** | |
1530 | * ata_wait_idle - Wait for a port to be idle. | |
1531 | * @ap: Port to wait for. | |
1532 | * | |
1533 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1534 | * Returns final value of status register. | |
1535 | * | |
1536 | * LOCKING: | |
1537 | * Inherited from caller. | |
1538 | */ | |
1539 | static inline u8 ata_wait_idle(struct ata_port *ap) | |
1540 | { | |
9363c382 | 1541 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
624d5c51 TH |
1542 | |
1543 | #ifdef ATA_DEBUG | |
1544 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) | |
1545 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", | |
1546 | status); | |
1547 | #endif | |
1548 | ||
1549 | return status; | |
1550 | } | |
127102ae | 1551 | #endif /* CONFIG_ATA_SFF */ |
624d5c51 | 1552 | |
1da177e4 | 1553 | #endif /* __LINUX_LIBATA_H__ */ |