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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 | |
1f938d06 | 63 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 | 64 | #ifdef ATA_VERBOSE_DEBUG |
1f938d06 | 65 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 LT |
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 | ||
1f938d06 | 74 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
2c13b7ce | 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 */ |
45fabbb7 | 149 | ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
f20ded38 | 150 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
1da177e4 | 151 | |
f20ded38 TH |
152 | ATA_DFLAG_DETACH = (1 << 24), |
153 | ATA_DFLAG_DETACHED = (1 << 25), | |
abdda733 | 154 | |
1da177e4 LT |
155 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
156 | ATA_DEV_ATA = 1, /* ATA device */ | |
157 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
158 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
159 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
160 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
161 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
162 | ATA_DEV_SEMB = 7, /* SEMB */ | |
163 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
164 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 165 | |
0c88758b | 166 | /* struct ata_link flags */ |
05944bdf | 167 | ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
ae791c05 TH |
168 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
169 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
170 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
171 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 172 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 173 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
18f7ba4c | 174 | ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
0c88758b | 175 | |
1da177e4 | 176 | /* struct ata_port flags */ |
949b38af | 177 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 178 | /* (doesn't imply presence) */ |
949b38af TH |
179 | ATA_FLAG_SATA = (1 << 1), |
180 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ | |
181 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ | |
182 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ | |
183 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ | |
184 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ | |
185 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
186 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
187 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
188 | * doesn't handle PIO interrupts */ | |
189 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
7395acb2 | 190 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 191 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 192 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 193 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 194 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 195 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
ca77329f | 196 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
18f7ba4c KCA |
197 | ATA_FLAG_EM = (1 << 21), /* driver supports enclosure |
198 | * management */ | |
199 | ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity | |
200 | * led */ | |
949b38af | 201 | |
b51e9e5d TH |
202 | /* The following flag belongs to ap->pflags but is kept in |
203 | * ap->flags because it's referenced in many LLDs and will be | |
204 | * removed in not-too-distant future. | |
205 | */ | |
206 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
207 | ||
208 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 209 | |
b51e9e5d TH |
210 | /* struct ata_port pflags */ |
211 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
212 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
213 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
214 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
215 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
b51e9e5d | 216 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
f4d6d004 | 217 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 218 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
ece180d1 TH |
219 | ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
220 | ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ | |
949b38af | 221 | |
b51e9e5d | 222 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 223 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
c05e6ff0 | 224 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
949b38af TH |
225 | |
226 | /* struct ata_queued_cmd flags */ | |
227 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
001102d7 | 228 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
27197367 | 229 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 230 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 231 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e027bd36 | 232 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
03faab78 | 233 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
e61e0672 | 234 | |
9ec957f2 TH |
235 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
236 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
237 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 238 | |
4e5ec5db | 239 | /* host set flags */ |
cca3974e | 240 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 241 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
886ad09f | 242 | ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
9bec2e38 | 243 | |
b8b275ef TH |
244 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
245 | ||
1da177e4 | 246 | /* various lengths of time */ |
341c2c95 TH |
247 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
248 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ | |
341c2c95 | 249 | ATA_TMOUT_INTERNAL_QUICK = 5000, |
45fabbb7 | 250 | ATA_TMOUT_MAX_PARK = 30000, |
1da177e4 | 251 | |
88ff6eaf TH |
252 | /* FIXME: GoVault needs 2s but we can't afford that without |
253 | * parallel probing. 800ms is enough for iVDR disk | |
254 | * HHD424020F7SV00. Increase to 2secs when parallel probing | |
255 | * is in place. | |
256 | */ | |
341c2c95 | 257 | ATA_TMOUT_FF_WAIT = 800, |
88ff6eaf | 258 | |
705e76be TH |
259 | /* Spec mandates to wait for ">= 2ms" before checking status |
260 | * after reset. We wait 150ms, because that was the magic | |
261 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for | |
262 | * the period of time between when the ATA command register is | |
263 | * written, and then status is checked. Because waiting for | |
264 | * "a while" before checking status is fine, post SRST, we | |
265 | * perform this magic delay here as well. | |
266 | * | |
267 | * Old drivers/ide uses the 2mS rule and then waits for ready. | |
268 | */ | |
341c2c95 | 269 | ATA_WAIT_AFTER_RESET = 150, |
705e76be | 270 | |
9dadd45b TH |
271 | /* If PMP is supported, we have to do follow-up SRST. As some |
272 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are | |
273 | * advised to wait only for the following duration before | |
274 | * doing SRST. | |
275 | */ | |
341c2c95 | 276 | ATA_TMOUT_PMP_SRST_WAIT = 1000, |
9dadd45b | 277 | |
1da177e4 LT |
278 | /* ATA bus states */ |
279 | BUS_UNKNOWN = 0, | |
280 | BUS_DMA = 1, | |
281 | BUS_IDLE = 2, | |
282 | BUS_NOINTR = 3, | |
283 | BUS_NODATA = 4, | |
284 | BUS_TIMER = 5, | |
285 | BUS_PIO = 6, | |
286 | BUS_EDD = 7, | |
287 | BUS_IDENTIFY = 8, | |
288 | BUS_PACKET = 9, | |
289 | ||
290 | /* SATA port states */ | |
291 | PORT_UNKNOWN = 0, | |
292 | PORT_ENABLED = 1, | |
293 | PORT_DISABLED = 2, | |
294 | ||
295 | /* encoding various smaller bitmaps into a single | |
7dc951ae | 296 | * unsigned long bitmap |
1da177e4 | 297 | */ |
70cd071e TH |
298 | ATA_NR_PIO_MODES = 7, |
299 | ATA_NR_MWDMA_MODES = 5, | |
300 | ATA_NR_UDMA_MODES = 8, | |
1da7b0d0 TH |
301 | |
302 | ATA_SHIFT_PIO = 0, | |
70cd071e TH |
303 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
304 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, | |
305 | ||
cedc9a47 JG |
306 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
307 | ATA_DMA_PAD_SZ = 4, | |
949b38af | 308 | |
0c247c55 TH |
309 | /* ering size */ |
310 | ATA_ERING_SIZE = 32, | |
311 | ||
31cc23b3 TH |
312 | /* return values for ->qc_defer */ |
313 | ATA_DEFER_LINK = 1, | |
314 | ATA_DEFER_PORT = 2, | |
315 | ||
f3e81b19 TH |
316 | /* desc_len for ata_eh_info and context */ |
317 | ATA_EH_DESC_LEN = 80, | |
318 | ||
9be1e979 TH |
319 | /* reset / recovery action types */ |
320 | ATA_EH_REVALIDATE = (1 << 0), | |
cf480626 TH |
321 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
322 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ | |
323 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
f9df58cb | 324 | ATA_EH_ENABLE_LINK = (1 << 3), |
3ec25ebd | 325 | ATA_EH_LPM = (1 << 4), /* link power management action */ |
45fabbb7 | 326 | ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
9be1e979 | 327 | |
45fabbb7 | 328 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
b5b3fa38 TH |
329 | ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
330 | ATA_EH_ENABLE_LINK | ATA_EH_LPM, | |
9be1e979 | 331 | |
f3e81b19 | 332 | /* ata_eh_info->flags */ |
abdda733 | 333 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
1cdaf534 TH |
334 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
335 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
abdda733 | 336 | |
0d64a233 TH |
337 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
338 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
339 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
340 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
341 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 342 | |
0d64a233 | 343 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d | 344 | |
848e4c68 TH |
345 | /* mask of flags to transfer *to* the slave link */ |
346 | ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, | |
347 | ||
a1e10f7e TH |
348 | /* max tries if error condition is still set after ->error_handler */ |
349 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 350 | |
14d2bac1 TH |
351 | /* how hard are we gonna try to probe/recover devices */ |
352 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 353 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
354 | ATA_EH_PMP_TRIES = 5, |
355 | ATA_EH_PMP_LINK_TRIES = 3, | |
356 | ||
bf1bff6f | 357 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
f5914a46 | 358 | |
87fbc5a0 TH |
359 | /* This should match the actual table size of |
360 | * ata_eh_cmd_timeout_table in libata-eh.c. | |
361 | */ | |
362 | ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 5, | |
363 | ||
93590859 AC |
364 | /* Horkage types. May be set by libata or controller on drives |
365 | (some horkage may be drive/controller pair dependant */ | |
366 | ||
367 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
368 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
369 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 370 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 371 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
50af2fa1 | 372 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
93328e11 | 373 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
ca77329f | 374 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
6bbfd53d | 375 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
2d3b8eea | 376 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
9ce8e307 | 377 | ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
6a87e42e TH |
378 | ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
379 | not multiple of 16 bytes */ | |
ac70a964 | 380 | ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firwmare update warning */ |
b3a70601 | 381 | |
2dcb407e | 382 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
383 | renumber */ |
384 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
385 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
386 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
ceb0c642 TH |
387 | |
388 | /* ATAPI command types */ | |
389 | ATAPI_READ = 0, /* READs */ | |
390 | ATAPI_WRITE = 1, /* WRITEs */ | |
391 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ | |
e52dcc48 TH |
392 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
393 | ATAPI_MISC = 4, /* the rest */ | |
624d5c51 TH |
394 | |
395 | /* Timing constants */ | |
396 | ATA_TIMING_SETUP = (1 << 0), | |
397 | ATA_TIMING_ACT8B = (1 << 1), | |
398 | ATA_TIMING_REC8B = (1 << 2), | |
399 | ATA_TIMING_CYC8B = (1 << 3), | |
400 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
401 | ATA_TIMING_CYC8B, | |
402 | ATA_TIMING_ACTIVE = (1 << 4), | |
403 | ATA_TIMING_RECOVER = (1 << 5), | |
3ada9c12 DD |
404 | ATA_TIMING_DMACK_HOLD = (1 << 6), |
405 | ATA_TIMING_CYCLE = (1 << 7), | |
406 | ATA_TIMING_UDMA = (1 << 8), | |
624d5c51 TH |
407 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
408 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
409 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
3ada9c12 DD |
410 | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
411 | ATA_TIMING_UDMA, | |
1da177e4 LT |
412 | }; |
413 | ||
7dc951ae TH |
414 | enum ata_xfer_mask { |
415 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) | |
416 | << ATA_SHIFT_PIO, | |
417 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) | |
418 | << ATA_SHIFT_MWDMA, | |
419 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) | |
420 | << ATA_SHIFT_UDMA, | |
421 | }; | |
422 | ||
14be71f4 | 423 | enum hsm_task_states { |
c56b14d2 | 424 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
425 | HSM_ST_FIRST, /* (waiting the device to) |
426 | write CDB or first data block */ | |
c56b14d2 AL |
427 | HSM_ST, /* (waiting the device to) transfer data */ |
428 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 429 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
430 | }; |
431 | ||
a7dac447 | 432 | enum ata_completion_errors { |
11a56d24 TH |
433 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
434 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
435 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
436 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
437 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
438 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
439 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
440 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
441 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 442 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 443 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
444 | }; |
445 | ||
1da177e4 LT |
446 | /* forward declarations */ |
447 | struct scsi_device; | |
448 | struct ata_port_operations; | |
449 | struct ata_port; | |
cc0680a5 | 450 | struct ata_link; |
1da177e4 LT |
451 | struct ata_queued_cmd; |
452 | ||
453 | /* typedefs */ | |
77853bf2 | 454 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
455 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
456 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 457 | unsigned long deadline); |
cc0680a5 | 458 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 459 | |
ca77329f KCA |
460 | /* |
461 | * host pm policy: If you alter this, you also need to alter libata-scsi.c | |
462 | * (for the ascii descriptions) | |
463 | */ | |
464 | enum link_pm { | |
465 | NOT_AVAILABLE, | |
466 | MIN_POWER, | |
467 | MAX_PERFORMANCE, | |
468 | MEDIUM_POWER, | |
469 | }; | |
ee959b00 | 470 | extern struct device_attribute dev_attr_link_power_management_policy; |
45fabbb7 | 471 | extern struct device_attribute dev_attr_unload_heads; |
18f7ba4c KCA |
472 | extern struct device_attribute dev_attr_em_message_type; |
473 | extern struct device_attribute dev_attr_em_message; | |
474 | extern struct device_attribute dev_attr_sw_activity; | |
475 | ||
476 | enum sw_activity { | |
477 | OFF, | |
478 | BLINK_ON, | |
479 | BLINK_OFF, | |
480 | }; | |
ca77329f | 481 | |
127102ae | 482 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 483 | struct ata_ioports { |
0d5ff566 TH |
484 | void __iomem *cmd_addr; |
485 | void __iomem *data_addr; | |
486 | void __iomem *error_addr; | |
487 | void __iomem *feature_addr; | |
488 | void __iomem *nsect_addr; | |
489 | void __iomem *lbal_addr; | |
490 | void __iomem *lbam_addr; | |
491 | void __iomem *lbah_addr; | |
492 | void __iomem *device_addr; | |
493 | void __iomem *status_addr; | |
494 | void __iomem *command_addr; | |
495 | void __iomem *altstatus_addr; | |
496 | void __iomem *ctl_addr; | |
497 | void __iomem *bmdma_addr; | |
498 | void __iomem *scr_addr; | |
1da177e4 | 499 | }; |
127102ae | 500 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 | 501 | |
cca3974e | 502 | struct ata_host { |
1da177e4 LT |
503 | spinlock_t lock; |
504 | struct device *dev; | |
0d5ff566 | 505 | void __iomem * const *iomap; |
1da177e4 LT |
506 | unsigned int n_ports; |
507 | void *private_data; | |
029cfd6b | 508 | struct ata_port_operations *ops; |
5444a6f4 | 509 | unsigned long flags; |
fafbae87 TH |
510 | #ifdef CONFIG_ATA_ACPI |
511 | acpi_handle acpi_handle; | |
512 | #endif | |
032af1ce | 513 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 514 | struct ata_port *ports[0]; |
1da177e4 LT |
515 | }; |
516 | ||
517 | struct ata_queued_cmd { | |
518 | struct ata_port *ap; | |
519 | struct ata_device *dev; | |
520 | ||
521 | struct scsi_cmnd *scsicmd; | |
522 | void (*scsidone)(struct scsi_cmnd *); | |
523 | ||
524 | struct ata_taskfile tf; | |
525 | u8 cdb[ATAPI_CDB_LEN]; | |
526 | ||
527 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
528 | unsigned int tag; | |
529 | unsigned int n_elem; | |
530 | ||
531 | int dma_dir; | |
532 | ||
5a5dbd18 | 533 | unsigned int sect_size; |
cedc9a47 | 534 | |
1da177e4 | 535 | unsigned int nbytes; |
aacda375 | 536 | unsigned int extrabytes; |
1da177e4 LT |
537 | unsigned int curbytes; |
538 | ||
87260216 | 539 | struct scatterlist *cursg; |
1da177e4 LT |
540 | unsigned int cursg_ofs; |
541 | ||
542 | struct scatterlist sgent; | |
1da177e4 | 543 | |
ff2aeb1e | 544 | struct scatterlist *sg; |
1da177e4 | 545 | |
a22e2eb0 | 546 | unsigned int err_mask; |
e61e0672 | 547 | struct ata_taskfile result_tf; |
1da177e4 LT |
548 | ata_qc_cb_t complete_fn; |
549 | ||
1da177e4 | 550 | void *private_data; |
1c50dc83 | 551 | void *lldd_task; |
1da177e4 LT |
552 | }; |
553 | ||
cca3974e | 554 | struct ata_port_stats { |
1da177e4 LT |
555 | unsigned long unhandled_irq; |
556 | unsigned long idle_irq; | |
557 | unsigned long rw_reqbuf; | |
558 | }; | |
559 | ||
0c247c55 | 560 | struct ata_ering_entry { |
3884f7b0 | 561 | unsigned int eflags; |
0c247c55 TH |
562 | unsigned int err_mask; |
563 | u64 timestamp; | |
564 | }; | |
565 | ||
566 | struct ata_ering { | |
567 | int cursor; | |
568 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
569 | }; | |
570 | ||
1da177e4 | 571 | struct ata_device { |
9af5c9c9 | 572 | struct ata_link *link; |
72fa4b74 | 573 | unsigned int devno; /* 0 or 1 */ |
75683fe7 | 574 | unsigned int horkage; /* List of broken features */ |
6866e7bc | 575 | unsigned long flags; /* ATA_DFLAG_xxx */ |
3edebac4 | 576 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
577 | #ifdef CONFIG_ATA_ACPI |
578 | acpi_handle acpi_handle; | |
398e0782 | 579 | union acpi_object *gtf_cache; |
fafbae87 | 580 | #endif |
72fa4b74 TH |
581 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
582 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 583 | unsigned int class; /* ATA_DEV_xxx */ |
45fabbb7 | 584 | unsigned long unpark_deadline; |
e0a71752 | 585 | |
1da177e4 LT |
586 | u8 pio_mode; |
587 | u8 dma_mode; | |
588 | u8 xfer_mode; | |
589 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
590 | ||
8cbd6df1 AL |
591 | unsigned int multi_count; /* sectors count for |
592 | READ/WRITE MULTIPLE */ | |
b00eec1d | 593 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 594 | unsigned int cdb_len; |
8bf62ece | 595 | |
acf356b1 | 596 | /* per-dev xfer mask */ |
7dc951ae TH |
597 | unsigned long pio_mask; |
598 | unsigned long mwdma_mask; | |
599 | unsigned long udma_mask; | |
acf356b1 | 600 | |
8bf62ece AL |
601 | /* for CHS addressing */ |
602 | u16 cylinders; /* Number of cylinders */ | |
603 | u16 heads; /* Number of heads */ | |
604 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
605 | |
606 | /* error history */ | |
7d47e8d4 | 607 | int spdn_cnt; |
f7e98930 JG |
608 | struct ata_ering ering; |
609 | ||
610 | union { | |
611 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
612 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
613 | }; | |
1da177e4 LT |
614 | }; |
615 | ||
72fa4b74 TH |
616 | /* Offset into struct ata_device. Fields above it are maintained |
617 | * acress device init. Fields below are zeroed. | |
618 | */ | |
619 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
620 | ||
f3e81b19 TH |
621 | struct ata_eh_info { |
622 | struct ata_device *dev; /* offending device */ | |
623 | u32 serror; /* SError from LLDD */ | |
624 | unsigned int err_mask; /* port-wide err_mask */ | |
625 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 626 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 627 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 628 | |
abdda733 TH |
629 | unsigned int probe_mask; |
630 | ||
f3e81b19 TH |
631 | char desc[ATA_EH_DESC_LEN]; |
632 | int desc_len; | |
633 | }; | |
634 | ||
635 | struct ata_eh_context { | |
636 | struct ata_eh_info i; | |
637 | int tries[ATA_MAX_DEVICES]; | |
87fbc5a0 TH |
638 | int cmd_timeout_idx[ATA_MAX_DEVICES] |
639 | [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; | |
abdda733 TH |
640 | unsigned int classes[ATA_MAX_DEVICES]; |
641 | unsigned int did_probe_mask; | |
45fabbb7 | 642 | unsigned int unloaded_mask; |
00115e0f TH |
643 | unsigned int saved_ncq_enabled; |
644 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; | |
0a2c0f56 TH |
645 | /* timestamp for the last reset attempt or success */ |
646 | unsigned long last_reset; | |
f3e81b19 TH |
647 | }; |
648 | ||
64578a3d TH |
649 | struct ata_acpi_drive |
650 | { | |
651 | u32 pio; | |
652 | u32 dma; | |
653 | } __packed; | |
654 | ||
655 | struct ata_acpi_gtm { | |
656 | struct ata_acpi_drive drive[2]; | |
657 | u32 flags; | |
658 | } __packed; | |
659 | ||
9af5c9c9 TH |
660 | struct ata_link { |
661 | struct ata_port *ap; | |
8989805d | 662 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
663 | |
664 | unsigned int active_tag; /* active tag on this link */ | |
665 | u32 sactive; /* active NCQ commands */ | |
666 | ||
0c88758b TH |
667 | unsigned int flags; /* ATA_LFLAG_xxx */ |
668 | ||
d127ea7b | 669 | u32 saved_scontrol; /* SControl on probe */ |
9af5c9c9 TH |
670 | unsigned int hw_sata_spd_limit; |
671 | unsigned int sata_spd_limit; | |
672 | unsigned int sata_spd; /* current SATA PHY speed */ | |
673 | ||
674 | /* record runtime error info, protected by host_set lock */ | |
675 | struct ata_eh_info eh_info; | |
676 | /* EH context */ | |
677 | struct ata_eh_context eh_context; | |
678 | ||
679 | struct ata_device device[ATA_MAX_DEVICES]; | |
680 | }; | |
681 | ||
1da177e4 | 682 | struct ata_port { |
cca3974e | 683 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
029cfd6b | 684 | struct ata_port_operations *ops; |
ba6a1308 | 685 | spinlock_t *lock; |
1da177e4 | 686 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 687 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
688 | unsigned int print_id; /* user visible unique port ID */ |
689 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
690 | |
691 | struct ata_prd *prd; /* our SG list */ | |
692 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
693 | ||
127102ae | 694 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 695 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
127102ae | 696 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 LT |
697 | |
698 | u8 ctl; /* cache of ATA control register */ | |
699 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
700 | unsigned int pio_mask; |
701 | unsigned int mwdma_mask; | |
702 | unsigned int udma_mask; | |
703 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
704 | |
705 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
8a8bc223 | 706 | unsigned long qc_allocated; |
dedaf2b0 | 707 | unsigned int qc_active; |
da917d69 | 708 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 709 | |
b1c72916 TH |
710 | struct ata_link link; /* host default link */ |
711 | struct ata_link *slave_link; /* see ata_slave_link_init() */ | |
1da177e4 | 712 | |
8989805d TH |
713 | int nr_pmp_links; /* nr of available PMP links */ |
714 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 715 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 716 | |
cca3974e JG |
717 | struct ata_port_stats stats; |
718 | struct ata_host *host; | |
2f1f610b | 719 | struct device *dev; |
1da177e4 | 720 | |
65f27f38 | 721 | void *port_task_data; |
52bad64d DH |
722 | struct delayed_work port_task; |
723 | struct delayed_work hotplug_task; | |
3b01b8af | 724 | struct work_struct scsi_rescan_task; |
86e45b6b | 725 | |
14be71f4 | 726 | unsigned int hsm_task_state; |
1da177e4 | 727 | |
bfd60579 | 728 | u32 msg_enable; |
a72ec4ce | 729 | struct list_head eh_done_q; |
c6cf9e99 | 730 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 731 | int eh_tries; |
45fabbb7 | 732 | struct completion park_req_pending; |
bfd60579 | 733 | |
500530f6 TH |
734 | pm_message_t pm_mesg; |
735 | int *pm_result; | |
ca77329f | 736 | enum link_pm pm_policy; |
500530f6 | 737 | |
5ddf24c5 TH |
738 | struct timer_list fastdrain_timer; |
739 | unsigned long fastdrain_cnt; | |
740 | ||
18f7ba4c | 741 | int em_message_type; |
1da177e4 | 742 | void *private_data; |
fe635c7e | 743 | |
fafbae87 TH |
744 | #ifdef CONFIG_ATA_ACPI |
745 | acpi_handle acpi_handle; | |
c05e6ff0 | 746 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
fafbae87 | 747 | #endif |
fe635c7e | 748 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
749 | }; |
750 | ||
029cfd6b TH |
751 | /* The following initializer overrides a method to NULL whether one of |
752 | * its parent has the method defined or not. This is equivalent to | |
753 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant | |
754 | * expression and thus can't be used as an initializer. | |
755 | */ | |
756 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) | |
757 | ||
1da177e4 | 758 | struct ata_port_operations { |
c1bc899f TH |
759 | /* |
760 | * Command execution | |
761 | */ | |
762 | int (*qc_defer)(struct ata_queued_cmd *qc); | |
763 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); | |
764 | void (*qc_prep)(struct ata_queued_cmd *qc); | |
765 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); | |
22183bf5 | 766 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
1da177e4 | 767 | |
c1bc899f TH |
768 | /* |
769 | * Configuration and exception handling | |
770 | */ | |
771 | int (*cable_detect)(struct ata_port *ap); | |
772 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); | |
773 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); | |
774 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); | |
775 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); | |
963e4975 | 776 | unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
1da177e4 | 777 | |
c1bc899f | 778 | void (*dev_config)(struct ata_device *dev); |
1da177e4 | 779 | |
c1bc899f TH |
780 | void (*freeze)(struct ata_port *ap); |
781 | void (*thaw)(struct ata_port *ap); | |
a1efdaba TH |
782 | ata_prereset_fn_t prereset; |
783 | ata_reset_fn_t softreset; | |
784 | ata_reset_fn_t hardreset; | |
785 | ata_postreset_fn_t postreset; | |
786 | ata_prereset_fn_t pmp_prereset; | |
787 | ata_reset_fn_t pmp_softreset; | |
788 | ata_reset_fn_t pmp_hardreset; | |
789 | ata_postreset_fn_t pmp_postreset; | |
c1bc899f TH |
790 | void (*error_handler)(struct ata_port *ap); |
791 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); | |
792 | ||
793 | /* | |
794 | * Optional features | |
795 | */ | |
82ef04fb TH |
796 | int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
797 | int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); | |
c1bc899f TH |
798 | void (*pmp_attach)(struct ata_port *ap); |
799 | void (*pmp_detach)(struct ata_port *ap); | |
800 | int (*enable_pm)(struct ata_port *ap, enum link_pm policy); | |
801 | void (*disable_pm)(struct ata_port *ap); | |
802 | ||
803 | /* | |
804 | * Start, stop, suspend and resume | |
805 | */ | |
806 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); | |
807 | int (*port_resume)(struct ata_port *ap); | |
808 | int (*port_start)(struct ata_port *ap); | |
809 | void (*port_stop)(struct ata_port *ap); | |
810 | void (*host_stop)(struct ata_host *host); | |
811 | ||
127102ae | 812 | #ifdef CONFIG_ATA_SFF |
c1bc899f TH |
813 | /* |
814 | * SFF / taskfile oriented ops | |
815 | */ | |
5682ed33 TH |
816 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
817 | u8 (*sff_check_status)(struct ata_port *ap); | |
818 | u8 (*sff_check_altstatus)(struct ata_port *ap); | |
819 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); | |
820 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); | |
821 | void (*sff_exec_command)(struct ata_port *ap, | |
822 | const struct ata_taskfile *tf); | |
823 | unsigned int (*sff_data_xfer)(struct ata_device *dev, | |
824 | unsigned char *buf, unsigned int buflen, int rw); | |
825 | u8 (*sff_irq_on)(struct ata_port *); | |
826 | void (*sff_irq_clear)(struct ata_port *); | |
827 | ||
c1bc899f TH |
828 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
829 | void (*bmdma_start)(struct ata_queued_cmd *qc); | |
830 | void (*bmdma_stop)(struct ata_queued_cmd *qc); | |
831 | u8 (*bmdma_status)(struct ata_port *ap); | |
127102ae | 832 | #endif /* CONFIG_ATA_SFF */ |
c1bc899f | 833 | |
18f7ba4c KCA |
834 | ssize_t (*em_show)(struct ata_port *ap, char *buf); |
835 | ssize_t (*em_store)(struct ata_port *ap, const char *message, | |
836 | size_t size); | |
837 | ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); | |
838 | ssize_t (*sw_activity_store)(struct ata_device *dev, | |
839 | enum sw_activity val); | |
c1bc899f TH |
840 | /* |
841 | * Obsolete | |
9ec957f2 | 842 | */ |
c1bc899f TH |
843 | void (*phy_reset)(struct ata_port *ap); |
844 | void (*eng_timeout)(struct ata_port *ap); | |
029cfd6b TH |
845 | |
846 | /* | |
847 | * ->inherits must be the last field and all the preceding | |
848 | * fields must be pointers. | |
849 | */ | |
850 | const struct ata_port_operations *inherits; | |
1da177e4 LT |
851 | }; |
852 | ||
853 | struct ata_port_info { | |
cca3974e | 854 | unsigned long flags; |
0c88758b | 855 | unsigned long link_flags; |
1da177e4 LT |
856 | unsigned long pio_mask; |
857 | unsigned long mwdma_mask; | |
858 | unsigned long udma_mask; | |
029cfd6b | 859 | struct ata_port_operations *port_ops; |
e99f8b5e | 860 | void *private_data; |
1da177e4 LT |
861 | }; |
862 | ||
452503f9 AC |
863 | struct ata_timing { |
864 | unsigned short mode; /* ATA mode */ | |
865 | unsigned short setup; /* t1 */ | |
866 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
867 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
868 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
869 | unsigned short active; /* t2 or tD */ | |
870 | unsigned short recover; /* t2i or tK */ | |
3ada9c12 | 871 | unsigned short dmack_hold; /* tj */ |
452503f9 AC |
872 | unsigned short cycle; /* t0 */ |
873 | unsigned short udma; /* t2CYCTYP/2 */ | |
874 | }; | |
875 | ||
624d5c51 TH |
876 | /* |
877 | * Core layer - drivers/ata/libata-core.c | |
878 | */ | |
e9c83914 TH |
879 | extern const unsigned long sata_deb_timing_normal[]; |
880 | extern const unsigned long sata_deb_timing_hotplug[]; | |
881 | extern const unsigned long sata_deb_timing_long[]; | |
882 | ||
029cfd6b | 883 | extern struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 884 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 885 | |
e9c83914 TH |
886 | static inline const unsigned long * |
887 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
888 | { | |
889 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
890 | return sata_deb_timing_hotplug; | |
891 | else | |
892 | return sata_deb_timing_normal; | |
893 | } | |
d7bb4cc7 | 894 | |
dd5b06c4 TH |
895 | static inline int ata_port_is_dummy(struct ata_port *ap) |
896 | { | |
897 | return ap->ops == &ata_dummy_port_ops; | |
898 | } | |
899 | ||
1da177e4 | 900 | extern void ata_port_probe(struct ata_port *); |
936fd732 | 901 | extern int sata_set_spd(struct ata_link *link); |
0aa1113d | 902 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
aa2731ad TH |
903 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
904 | int (*check_ready)(struct ata_link *link)); | |
936fd732 TH |
905 | extern int sata_link_debounce(struct ata_link *link, |
906 | const unsigned long *params, unsigned long deadline); | |
907 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
908 | unsigned long deadline); | |
cc0680a5 | 909 | extern int sata_link_hardreset(struct ata_link *link, |
9dadd45b TH |
910 | const unsigned long *timing, unsigned long deadline, |
911 | bool *online, int (*check_ready)(struct ata_link *)); | |
57c9efdf TH |
912 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
913 | unsigned long deadline); | |
203c75b8 | 914 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 | 915 | extern void ata_port_disable(struct ata_port *); |
2855568b | 916 | |
f3187195 | 917 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
918 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
919 | const struct ata_port_info * const * ppi, int n_ports); | |
b1c72916 | 920 | extern int ata_slave_link_init(struct ata_port *ap); |
ecef7253 | 921 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
922 | extern int ata_host_register(struct ata_host *host, |
923 | struct scsi_host_template *sht); | |
f5cda257 TH |
924 | extern int ata_host_activate(struct ata_host *host, int irq, |
925 | irq_handler_t irq_handler, unsigned long irq_flags, | |
926 | struct scsi_host_template *sht); | |
0529c159 | 927 | extern void ata_host_detach(struct ata_host *host); |
cca3974e | 928 | extern void ata_host_init(struct ata_host *, struct device *, |
029cfd6b | 929 | unsigned long, struct ata_port_operations *); |
193515d5 | 930 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
931 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
932 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
94be9a58 JG |
933 | extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
934 | int cmd, void __user *arg); | |
80289167 | 935 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 936 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
937 | struct ata_port_info *, struct Scsi_Host *); |
938 | extern int ata_sas_port_init(struct ata_port *); | |
939 | extern int ata_sas_port_start(struct ata_port *ap); | |
940 | extern void ata_sas_port_stop(struct ata_port *ap); | |
941 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
942 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
943 | struct ata_port *ap); | |
936fd732 TH |
944 | extern int sata_scr_valid(struct ata_link *link); |
945 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
946 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
947 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
b5b3fa38 TH |
948 | extern bool ata_link_online(struct ata_link *link); |
949 | extern bool ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 950 | #ifdef CONFIG_PM |
cca3974e JG |
951 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
952 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 953 | #endif |
67846b30 | 954 | extern int ata_ratelimit(void); |
c22daff4 | 955 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
341c2c95 | 956 | unsigned long interval, unsigned long timeout); |
436d34b3 | 957 | extern int atapi_cmd_type(u8 opcode); |
9977126c TH |
958 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
959 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 960 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
7dc951ae TH |
961 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
962 | unsigned long mwdma_mask, unsigned long udma_mask); | |
963 | extern void ata_unpack_xfermask(unsigned long xfer_mask, | |
964 | unsigned long *pio_mask, unsigned long *mwdma_mask, | |
965 | unsigned long *udma_mask); | |
966 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); | |
967 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); | |
968 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); | |
969 | extern const char *ata_mode_string(unsigned long xfer_mask); | |
970 | extern unsigned long ata_id_xfermask(const u16 *id); | |
2dcb407e | 971 | extern int ata_port_start(struct ata_port *ap); |
31cc23b3 | 972 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
e46834cd | 973 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 LT |
974 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
975 | unsigned int n_elem); | |
057ace5e | 976 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 977 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
978 | extern void ata_id_string(const u16 *id, unsigned char *s, |
979 | unsigned int ofs, unsigned int len); | |
980 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
981 | unsigned int ofs, unsigned int len); | |
963e4975 AC |
982 | extern unsigned int ata_do_dev_read_id(struct ata_device *dev, |
983 | struct ata_taskfile *tf, u16 *id); | |
f686bcb8 | 984 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
79f97dad | 985 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
3373efd8 | 986 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
987 | void (*done)(struct scsi_cmnd *)); |
988 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
989 | struct block_device *bdev, | |
990 | sector_t capacity, int geom[]); | |
991 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 992 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
993 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
994 | int queue_depth); | |
3373efd8 | 995 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 996 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
1da177e4 | 997 | |
be0d18df AC |
998 | extern int ata_cable_40wire(struct ata_port *ap); |
999 | extern int ata_cable_80wire(struct ata_port *ap); | |
1000 | extern int ata_cable_sata(struct ata_port *ap); | |
c88f90c3 | 1001 | extern int ata_cable_ignore(struct ata_port *ap); |
be0d18df AC |
1002 | extern int ata_cable_unknown(struct ata_port *ap); |
1003 | ||
624d5c51 | 1004 | /* Timing helpers */ |
1bc4ccff | 1005 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
6357357c | 1006 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
452503f9 AC |
1007 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
1008 | struct ata_timing *, int, int); | |
1009 | extern void ata_timing_merge(const struct ata_timing *, | |
1010 | const struct ata_timing *, struct ata_timing *, | |
1011 | unsigned int); | |
a0f79b92 | 1012 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
452503f9 | 1013 | |
624d5c51 TH |
1014 | /* PCI */ |
1015 | #ifdef CONFIG_PCI | |
1016 | struct pci_dev; | |
1017 | ||
1018 | struct pci_bits { | |
1019 | unsigned int reg; /* PCI config register to read */ | |
1020 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
1021 | unsigned long mask; | |
1022 | unsigned long val; | |
452503f9 AC |
1023 | }; |
1024 | ||
624d5c51 TH |
1025 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
1026 | extern void ata_pci_remove_one(struct pci_dev *pdev); | |
1027 | ||
1028 | #ifdef CONFIG_PM | |
1029 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1030 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
1031 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1032 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
1033 | #endif /* CONFIG_PM */ | |
1034 | #endif /* CONFIG_PCI */ | |
1035 | ||
1036 | /* | |
1037 | * ACPI - drivers/ata/libata-acpi.c | |
1038 | */ | |
e1ddb4b6 | 1039 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 TH |
1040 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1041 | { | |
1042 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) | |
1043 | return &ap->__acpi_init_gtm; | |
1044 | return NULL; | |
1045 | } | |
0d02f0b2 TH |
1046 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
1047 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); | |
7c77fa4d TH |
1048 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
1049 | const struct ata_acpi_gtm *gtm); | |
021ee9a6 | 1050 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
e1ddb4b6 | 1051 | #else |
c05e6ff0 TH |
1052 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1053 | { | |
1054 | return NULL; | |
1055 | } | |
7c77fa4d TH |
1056 | |
1057 | static inline int ata_acpi_stm(const struct ata_port *ap, | |
1058 | struct ata_acpi_gtm *stm) | |
1059 | { | |
1060 | return -ENOSYS; | |
1061 | } | |
1062 | ||
1063 | static inline int ata_acpi_gtm(const struct ata_port *ap, | |
1064 | struct ata_acpi_gtm *stm) | |
1065 | { | |
1066 | return -ENOSYS; | |
1067 | } | |
1068 | ||
1069 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, | |
1070 | const struct ata_acpi_gtm *gtm) | |
1071 | { | |
1072 | return 0; | |
1073 | } | |
021ee9a6 TH |
1074 | |
1075 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, | |
1076 | const struct ata_acpi_gtm *gtm) | |
1077 | { | |
1078 | return 0; | |
1079 | } | |
e1ddb4b6 | 1080 | #endif |
1da177e4 | 1081 | |
ece1d636 | 1082 | /* |
624d5c51 | 1083 | * EH - drivers/ata/libata-eh.c |
ece1d636 | 1084 | */ |
7b70fc03 | 1085 | extern void ata_port_schedule_eh(struct ata_port *ap); |
dbd82616 | 1086 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1087 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1088 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1089 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1090 | |
1091 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1092 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1093 | |
ece1d636 TH |
1094 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1095 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
10acf3b0 | 1096 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
ece1d636 | 1097 | |
f5914a46 TH |
1098 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1099 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1100 | ata_postreset_fn_t postreset); | |
a1efdaba | 1101 | extern void ata_std_error_handler(struct ata_port *ap); |
022bdb07 | 1102 | |
68d1d07b TH |
1103 | /* |
1104 | * Base operations to inherit from and initializers for sht | |
1105 | * | |
1106 | * Operations | |
1107 | * | |
1108 | * base : Common to all libata drivers. | |
1109 | * sata : SATA controllers w/ native interface. | |
1110 | * pmp : SATA controllers w/ PMP support. | |
1111 | * sff : SFF ATA controllers w/o BMDMA support. | |
1112 | * bmdma : SFF ATA controllers w/ BMDMA support. | |
1113 | * | |
1114 | * sht initializers | |
1115 | * | |
1116 | * BASE : Common to all libata drivers. The user must set | |
1117 | * sg_tablesize and dma_boundary. | |
1118 | * PIO : SFF ATA controllers w/ only PIO support. | |
1119 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and | |
1120 | * dma_boundary are set to BMDMA limits. | |
1121 | * NCQ : SATA controllers supporting NCQ. The user must set | |
1122 | * sg_tablesize, dma_boundary and can_queue. | |
1123 | */ | |
1124 | extern const struct ata_port_operations ata_base_port_ops; | |
1125 | extern const struct ata_port_operations sata_port_ops; | |
45fabbb7 | 1126 | extern struct device_attribute *ata_common_sdev_attrs[]; |
68d1d07b TH |
1127 | |
1128 | #define ATA_BASE_SHT(drv_name) \ | |
1129 | .module = THIS_MODULE, \ | |
1130 | .name = drv_name, \ | |
1131 | .ioctl = ata_scsi_ioctl, \ | |
1132 | .queuecommand = ata_scsi_queuecmd, \ | |
1133 | .can_queue = ATA_DEF_QUEUE, \ | |
1134 | .this_id = ATA_SHT_THIS_ID, \ | |
1135 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ | |
1136 | .emulated = ATA_SHT_EMULATED, \ | |
1137 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ | |
1138 | .proc_name = drv_name, \ | |
1139 | .slave_configure = ata_scsi_slave_config, \ | |
1140 | .slave_destroy = ata_scsi_slave_destroy, \ | |
45fabbb7 EO |
1141 | .bios_param = ata_std_bios_param, \ |
1142 | .sdev_attrs = ata_common_sdev_attrs | |
68d1d07b | 1143 | |
68d1d07b TH |
1144 | #define ATA_NCQ_SHT(drv_name) \ |
1145 | ATA_BASE_SHT(drv_name), \ | |
1146 | .change_queue_depth = ata_scsi_change_queue_depth | |
1147 | ||
071f44b1 TH |
1148 | /* |
1149 | * PMP helpers | |
1150 | */ | |
88fcd562 | 1151 | #ifdef CONFIG_SATA_PMP |
071f44b1 TH |
1152 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1153 | { | |
1154 | return ap->flags & ATA_FLAG_PMP; | |
1155 | } | |
1156 | ||
1157 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1158 | { | |
1159 | return ap->nr_pmp_links != 0; | |
1160 | } | |
1161 | ||
1162 | static inline int ata_is_host_link(const struct ata_link *link) | |
1163 | { | |
b1c72916 | 1164 | return link == &link->ap->link || link == link->ap->slave_link; |
071f44b1 | 1165 | } |
88fcd562 TH |
1166 | #else /* CONFIG_SATA_PMP */ |
1167 | static inline bool sata_pmp_supported(struct ata_port *ap) | |
1168 | { | |
1169 | return false; | |
1170 | } | |
1171 | ||
1172 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1173 | { | |
1174 | return false; | |
1175 | } | |
1176 | ||
1177 | static inline int ata_is_host_link(const struct ata_link *link) | |
1178 | { | |
1179 | return 1; | |
1180 | } | |
1181 | #endif /* CONFIG_SATA_PMP */ | |
071f44b1 TH |
1182 | |
1183 | static inline int sata_srst_pmp(struct ata_link *link) | |
1184 | { | |
1185 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) | |
1186 | return SATA_PMP_CTRL_PORT; | |
1187 | return link->pmp; | |
1188 | } | |
1189 | ||
61440db6 TH |
1190 | /* |
1191 | * printk helpers | |
1192 | */ | |
1193 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
c2e366a1 | 1194 | printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) |
61440db6 | 1195 | |
8989805d | 1196 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
b1c72916 | 1197 | if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ |
c2e366a1 | 1198 | printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ |
8989805d TH |
1199 | (link)->pmp , ##args); \ |
1200 | else \ | |
c2e366a1 | 1201 | printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ |
8989805d | 1202 | } while(0) |
9af5c9c9 | 1203 | |
61440db6 | 1204 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
c2e366a1 | 1205 | printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ |
8989805d | 1206 | (dev)->link->pmp + (dev)->devno , ##args) |
1da177e4 | 1207 | |
f3e81b19 TH |
1208 | /* |
1209 | * ata_eh_info helpers | |
1210 | */ | |
cb94c1cf TH |
1211 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1212 | __attribute__ ((format (printf, 2, 3))); | |
1213 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1214 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1215 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1216 | |
c0b6c037 TH |
1217 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1218 | { | |
b558eddd | 1219 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
f8f1e1cc | 1220 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
b558eddd | 1221 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1222 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1223 | } | |
1224 | ||
cbcdd875 TH |
1225 | /* |
1226 | * port description helpers | |
1227 | */ | |
1228 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1229 | __attribute__ ((format (printf, 2, 3))); | |
1230 | #ifdef CONFIG_PCI | |
1231 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1232 | const char *name); | |
1233 | #endif | |
1234 | ||
1da177e4 LT |
1235 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1236 | { | |
1237 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1238 | } | |
1239 | ||
2ab7db1f TH |
1240 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1241 | { | |
83c063dd | 1242 | return tag == ATA_TAG_INTERNAL; |
2ab7db1f TH |
1243 | } |
1244 | ||
5806db22 TH |
1245 | /* |
1246 | * device helpers | |
1247 | */ | |
e1211e3f | 1248 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1249 | { |
e0a71752 TH |
1250 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1251 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1252 | } |
1253 | ||
e1211e3f | 1254 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1255 | { |
e0a71752 TH |
1256 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1257 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1258 | } |
1259 | ||
002c8054 TH |
1260 | static inline unsigned int ata_class_absent(unsigned int class) |
1261 | { | |
1262 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1263 | } | |
1264 | ||
e1211e3f TH |
1265 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1266 | { | |
1267 | return ata_class_enabled(dev->class); | |
1268 | } | |
1269 | ||
1270 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1271 | { | |
1272 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1273 | } |
1274 | ||
002c8054 TH |
1275 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1276 | { | |
1277 | return ata_class_absent(dev->class); | |
1278 | } | |
1279 | ||
5806db22 | 1280 | /* |
f58229f8 | 1281 | * link helpers |
5806db22 | 1282 | */ |
f58229f8 | 1283 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1284 | { |
8989805d | 1285 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1286 | return 2; |
1287 | return 1; | |
1288 | } | |
1289 | ||
da917d69 TH |
1290 | static inline int ata_link_active(struct ata_link *link) |
1291 | { | |
1292 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1293 | } | |
1294 | ||
1eca4365 TH |
1295 | /* |
1296 | * Iterators | |
1297 | * | |
1298 | * ATA_LITER_* constants are used to select link iteration mode and | |
1299 | * ATA_DITER_* device iteration mode. | |
1300 | * | |
1301 | * For a custom iteration directly using ata_{link|dev}_next(), if | |
1302 | * @link or @dev, respectively, is NULL, the first element is | |
1303 | * returned. @dev and @link can be any valid device or link and the | |
1304 | * next element according to the iteration mode will be returned. | |
1305 | * After the last element, NULL is returned. | |
1306 | */ | |
1307 | enum ata_link_iter_mode { | |
1308 | ATA_LITER_EDGE, /* if present, PMP links only; otherwise, | |
1309 | * host link. no slave link */ | |
1310 | ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ | |
1311 | ATA_LITER_PMP_FIRST, /* PMP links followed by host link, | |
1312 | * slave link still comes after host link */ | |
1313 | }; | |
1314 | ||
1315 | enum ata_dev_iter_mode { | |
1316 | ATA_DITER_ENABLED, | |
1317 | ATA_DITER_ENABLED_REVERSE, | |
1318 | ATA_DITER_ALL, | |
1319 | ATA_DITER_ALL_REVERSE, | |
1320 | }; | |
1321 | ||
1322 | extern struct ata_link *ata_link_next(struct ata_link *link, | |
1323 | struct ata_port *ap, | |
1324 | enum ata_link_iter_mode mode); | |
1325 | ||
1326 | extern struct ata_device *ata_dev_next(struct ata_device *dev, | |
1327 | struct ata_link *link, | |
1328 | enum ata_dev_iter_mode mode); | |
1329 | ||
1330 | /* | |
1331 | * Shortcut notation for iterations | |
1332 | * | |
1333 | * ata_for_each_link() iterates over each link of @ap according to | |
1334 | * @mode. @link points to the current link in the loop. @link is | |
1335 | * NULL after loop termination. ata_for_each_dev() works the same way | |
1336 | * except that it iterates over each device of @link. | |
1337 | * | |
1338 | * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be | |
1339 | * specified when using the following shorthand notations. Only the | |
1340 | * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be | |
1341 | * specified. This not only increases brevity but also makes it | |
1342 | * impossible to use ATA_LITER_* for device iteration or vice-versa. | |
1343 | */ | |
1344 | #define ata_for_each_link(link, ap, mode) \ | |
1345 | for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ | |
1346 | (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) | |
1347 | ||
1348 | #define ata_for_each_dev(dev, link, mode) \ | |
1349 | for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ | |
1350 | (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) | |
5806db22 | 1351 | |
6d1245bf TH |
1352 | /** |
1353 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1354 | * @dev: ATA device to test for | |
1355 | * | |
1356 | * LOCKING: | |
1357 | * spin_lock_irqsave(host lock) | |
1358 | * | |
1359 | * RETURNS: | |
1360 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1361 | */ | |
1362 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1363 | { | |
1364 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1365 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1366 | } | |
0baab86b | 1367 | |
1da177e4 LT |
1368 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1369 | { | |
1370 | qc->tf.ctl |= ATA_NIEN; | |
1371 | } | |
1372 | ||
f69499f4 TH |
1373 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1374 | unsigned int tag) | |
1da177e4 LT |
1375 | { |
1376 | if (likely(ata_tag_valid(tag))) | |
1377 | return &ap->qcmd[tag]; | |
1378 | return NULL; | |
1379 | } | |
1380 | ||
f69499f4 TH |
1381 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1382 | unsigned int tag) | |
1383 | { | |
1384 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1385 | ||
1386 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1387 | return qc; | |
1388 | ||
1389 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1390 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1391 | return qc; | |
1392 | ||
1393 | return NULL; | |
1394 | } | |
1395 | ||
aacda375 TH |
1396 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1397 | { | |
1398 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); | |
1399 | } | |
1400 | ||
3373efd8 | 1401 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1402 | { |
1403 | memset(tf, 0, sizeof(*tf)); | |
1404 | ||
9af5c9c9 | 1405 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1406 | if (dev->devno == 0) |
1da177e4 LT |
1407 | tf->device = ATA_DEVICE_OBS; |
1408 | else | |
1409 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1410 | } | |
1411 | ||
2c13b7ce JG |
1412 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1413 | { | |
501e0c50 | 1414 | qc->dma_dir = DMA_NONE; |
ff2aeb1e | 1415 | qc->sg = NULL; |
2c13b7ce | 1416 | qc->flags = 0; |
87260216 JA |
1417 | qc->cursg = NULL; |
1418 | qc->cursg_ofs = 0; | |
aacda375 | 1419 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
7a801184 | 1420 | qc->n_elem = 0; |
a22e2eb0 | 1421 | qc->err_mask = 0; |
5a5dbd18 | 1422 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1423 | |
3373efd8 | 1424 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1425 | |
1426 | /* init result_tf such that it indicates normal completion */ | |
1427 | qc->result_tf.command = ATA_DRDY; | |
1428 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1429 | } |
1430 | ||
057ace5e | 1431 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1432 | { |
1433 | return ata_id_wcache_enabled(dev->id) || | |
1434 | ata_id_has_flush(dev->id) || | |
1435 | ata_id_has_flush_ext(dev->id); | |
1436 | } | |
1437 | ||
a7dac447 JG |
1438 | static inline unsigned int ac_err_mask(u8 status) |
1439 | { | |
3655d1d3 | 1440 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1441 | return AC_ERR_HSM; |
a7dac447 JG |
1442 | if (status & (ATA_ERR | ATA_DF)) |
1443 | return AC_ERR_DEV; | |
1444 | return 0; | |
1445 | } | |
1446 | ||
1447 | static inline unsigned int __ac_err_mask(u8 status) | |
1448 | { | |
1449 | unsigned int mask = ac_err_mask(status); | |
1450 | if (mask == 0) | |
1451 | return AC_ERR_OTHER; | |
1452 | return mask; | |
1453 | } | |
1454 | ||
35bb94b1 JG |
1455 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1456 | { | |
4911487a | 1457 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1458 | } |
1459 | ||
78ab88f0 TH |
1460 | static inline int ata_check_ready(u8 status) |
1461 | { | |
005b1f74 JG |
1462 | if (!(status & ATA_BUSY)) |
1463 | return 1; | |
78ab88f0 TH |
1464 | |
1465 | /* 0xff indicates either no device or device not ready */ | |
1466 | if (status == 0xff) | |
1467 | return -ENODEV; | |
1468 | ||
005b1f74 | 1469 | return 0; |
78ab88f0 TH |
1470 | } |
1471 | ||
341c2c95 TH |
1472 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
1473 | unsigned long timeout_msecs) | |
1474 | { | |
1475 | return from_jiffies + msecs_to_jiffies(timeout_msecs); | |
1476 | } | |
1477 | ||
b15b3eba AC |
1478 | /* Don't open code these in drivers as there are traps. Firstly the range may |
1479 | change in future hardware and specs, secondly 0xFF means 'no DMA' but is | |
1480 | > UDMA_0. Dyma ddreigiau */ | |
1481 | ||
1482 | static inline int ata_using_mwdma(struct ata_device *adev) | |
1483 | { | |
1484 | if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) | |
1485 | return 1; | |
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static inline int ata_using_udma(struct ata_device *adev) | |
1490 | { | |
1491 | if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) | |
1492 | return 1; | |
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | static inline int ata_dma_enabled(struct ata_device *adev) | |
1497 | { | |
1498 | return (adev->dma_mode == 0xFF ? 0 : 1); | |
1499 | } | |
48515f6c TH |
1500 | |
1501 | /************************************************************************** | |
1502 | * PMP - drivers/ata/libata-pmp.c | |
1503 | */ | |
88fcd562 TH |
1504 | #ifdef CONFIG_SATA_PMP |
1505 | ||
48515f6c TH |
1506 | extern const struct ata_port_operations sata_pmp_port_ops; |
1507 | ||
1508 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); | |
1509 | extern void sata_pmp_error_handler(struct ata_port *ap); | |
1510 | ||
88fcd562 TH |
1511 | #else /* CONFIG_SATA_PMP */ |
1512 | ||
1513 | #define sata_pmp_port_ops sata_port_ops | |
1514 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer | |
1515 | #define sata_pmp_error_handler ata_std_error_handler | |
1516 | ||
1517 | #endif /* CONFIG_SATA_PMP */ | |
1518 | ||
48515f6c | 1519 | |
624d5c51 TH |
1520 | /************************************************************************** |
1521 | * SFF - drivers/ata/libata-sff.c | |
1522 | */ | |
127102ae TH |
1523 | #ifdef CONFIG_ATA_SFF |
1524 | ||
624d5c51 TH |
1525 | extern const struct ata_port_operations ata_sff_port_ops; |
1526 | extern const struct ata_port_operations ata_bmdma_port_ops; | |
871af121 | 1527 | extern const struct ata_port_operations ata_bmdma32_port_ops; |
624d5c51 TH |
1528 | |
1529 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ | |
1530 | #define ATA_PIO_SHT(drv_name) \ | |
1531 | ATA_BASE_SHT(drv_name), \ | |
1532 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1533 | .dma_boundary = ATA_DMA_BOUNDARY | |
1534 | ||
1535 | #define ATA_BMDMA_SHT(drv_name) \ | |
1536 | ATA_BASE_SHT(drv_name), \ | |
1537 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1538 | .dma_boundary = ATA_DMA_BOUNDARY | |
1539 | ||
9363c382 TH |
1540 | extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); |
1541 | extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); | |
1542 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); | |
1543 | extern u8 ata_sff_check_status(struct ata_port *ap); | |
a57c1bad AC |
1544 | extern void ata_sff_pause(struct ata_port *ap); |
1545 | extern void ata_sff_dma_pause(struct ata_port *ap); | |
9363c382 TH |
1546 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
1547 | unsigned long timeout_pat, unsigned long timeout); | |
705e76be | 1548 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
9363c382 TH |
1549 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1550 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); | |
1551 | extern void ata_sff_exec_command(struct ata_port *ap, | |
1552 | const struct ata_taskfile *tf); | |
1553 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, | |
624d5c51 | 1554 | unsigned char *buf, unsigned int buflen, int rw); |
871af121 AC |
1555 | extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, |
1556 | unsigned char *buf, unsigned int buflen, int rw); | |
9363c382 | 1557 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
624d5c51 | 1558 | unsigned char *buf, unsigned int buflen, int rw); |
9363c382 TH |
1559 | extern u8 ata_sff_irq_on(struct ata_port *ap); |
1560 | extern void ata_sff_irq_clear(struct ata_port *ap); | |
1561 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, | |
1562 | u8 status, int in_wq); | |
1563 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); | |
22183bf5 | 1564 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
9363c382 TH |
1565 | extern unsigned int ata_sff_host_intr(struct ata_port *ap, |
1566 | struct ata_queued_cmd *qc); | |
1567 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); | |
1568 | extern void ata_sff_freeze(struct ata_port *ap); | |
1569 | extern void ata_sff_thaw(struct ata_port *ap); | |
1570 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); | |
1571 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, | |
1572 | u8 *r_err); | |
705e76be TH |
1573 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
1574 | unsigned long deadline); | |
9363c382 | 1575 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
624d5c51 | 1576 | unsigned long deadline); |
9363c382 TH |
1577 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1578 | unsigned long deadline); | |
1579 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); | |
1580 | extern void ata_sff_error_handler(struct ata_port *ap); | |
1581 | extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); | |
624d5c51 | 1582 | extern int ata_sff_port_start(struct ata_port *ap); |
9363c382 TH |
1583 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
1584 | extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, | |
1585 | unsigned long xfer_mask); | |
624d5c51 TH |
1586 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1587 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
1588 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); | |
1589 | extern u8 ata_bmdma_status(struct ata_port *ap); | |
1590 | extern void ata_bus_reset(struct ata_port *ap); | |
1591 | ||
1592 | #ifdef CONFIG_PCI | |
9363c382 TH |
1593 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
1594 | extern int ata_pci_bmdma_init(struct ata_host *host); | |
1595 | extern int ata_pci_sff_init_host(struct ata_host *host); | |
1596 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, | |
624d5c51 TH |
1597 | const struct ata_port_info * const * ppi, |
1598 | struct ata_host **r_host); | |
9363c382 | 1599 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
624d5c51 TH |
1600 | irq_handler_t irq_handler, |
1601 | struct scsi_host_template *sht); | |
9363c382 TH |
1602 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
1603 | const struct ata_port_info * const * ppi, | |
1604 | struct scsi_host_template *sht, void *host_priv); | |
624d5c51 TH |
1605 | #endif /* CONFIG_PCI */ |
1606 | ||
624d5c51 | 1607 | /** |
9363c382 | 1608 | * ata_sff_busy_wait - Wait for a port status register |
624d5c51 TH |
1609 | * @ap: Port to wait for. |
1610 | * @bits: bits that must be clear | |
1611 | * @max: number of 10uS waits to perform | |
1612 | * | |
1613 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1614 | * status register to be cleared. | |
1615 | * Returns final value of status register. | |
1616 | * | |
1617 | * LOCKING: | |
1618 | * Inherited from caller. | |
1619 | */ | |
9363c382 TH |
1620 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1621 | unsigned int max) | |
624d5c51 TH |
1622 | { |
1623 | u8 status; | |
1624 | ||
1625 | do { | |
1626 | udelay(10); | |
5682ed33 | 1627 | status = ap->ops->sff_check_status(ap); |
624d5c51 TH |
1628 | max--; |
1629 | } while (status != 0xff && (status & bits) && (max > 0)); | |
1630 | ||
1631 | return status; | |
1632 | } | |
1633 | ||
1634 | /** | |
1635 | * ata_wait_idle - Wait for a port to be idle. | |
1636 | * @ap: Port to wait for. | |
1637 | * | |
1638 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1639 | * Returns final value of status register. | |
1640 | * | |
1641 | * LOCKING: | |
1642 | * Inherited from caller. | |
1643 | */ | |
1644 | static inline u8 ata_wait_idle(struct ata_port *ap) | |
1645 | { | |
9363c382 | 1646 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
624d5c51 TH |
1647 | |
1648 | #ifdef ATA_DEBUG | |
1649 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) | |
1650 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", | |
1651 | status); | |
1652 | #endif | |
1653 | ||
1654 | return status; | |
1655 | } | |
127102ae | 1656 | #endif /* CONFIG_ATA_SFF */ |
624d5c51 | 1657 | |
1da177e4 | 1658 | #endif /* __LINUX_LIBATA_H__ */ |