Commit | Line | Data |
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1da177e4 | 1 | /* |
af36d7f0 JG |
2 | * Copyright 2003-2005 Red Hat, Inc. All rights reserved. |
3 | * Copyright 2003-2005 Jeff Garzik | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; see the file COPYING. If not, write to | |
18 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | * | |
20 | * | |
21 | * libata documentation is available via 'make {ps|pdf}docs', | |
22 | * as Documentation/DocBook/libata.* | |
23 | * | |
1da177e4 LT |
24 | */ |
25 | ||
26 | #ifndef __LINUX_LIBATA_H__ | |
27 | #define __LINUX_LIBATA_H__ | |
28 | ||
29 | #include <linux/delay.h> | |
30 | #include <linux/interrupt.h> | |
31 | #include <linux/pci.h> | |
1c72d8d9 | 32 | #include <linux/dma-mapping.h> |
41542dbe | 33 | #include <asm/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> |
1da177e4 | 39 | |
a6d967a4 JG |
40 | /* |
41 | * Define if arch has non-standard setup. This is a _PCI_ standard | |
42 | * not a legacy or ISA standard. | |
43 | */ | |
44 | #ifdef CONFIG_ATA_NONSTANDARD | |
2ec7df04 | 45 | #include <asm/libata-portmap.h> |
a6d967a4 JG |
46 | #else |
47 | #include <asm-generic/libata-portmap.h> | |
48 | #endif | |
2ec7df04 | 49 | |
1da177e4 | 50 | /* |
bfd60579 RD |
51 | * compile-time options: to be removed as soon as all the drivers are |
52 | * converted to the new debugging mechanism | |
1da177e4 LT |
53 | */ |
54 | #undef ATA_DEBUG /* debugging output */ | |
55 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
56 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
57 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
58 | |
59 | ||
60 | /* note: prints function name for you */ | |
61 | #ifdef ATA_DEBUG | |
62 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
63 | #ifdef ATA_VERBOSE_DEBUG | |
64 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) | |
65 | #else | |
66 | #define VPRINTK(fmt, args...) | |
67 | #endif /* ATA_VERBOSE_DEBUG */ | |
68 | #else | |
69 | #define DPRINTK(fmt, args...) | |
70 | #define VPRINTK(fmt, args...) | |
71 | #endif /* ATA_DEBUG */ | |
72 | ||
2c13b7ce JG |
73 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
74 | ||
bfd60579 RD |
75 | /* NEW: debug levels */ |
76 | #define HAVE_LIBATA_MSG 1 | |
77 | ||
78 | enum { | |
79 | ATA_MSG_DRV = 0x0001, | |
80 | ATA_MSG_INFO = 0x0002, | |
81 | ATA_MSG_PROBE = 0x0004, | |
82 | ATA_MSG_WARN = 0x0008, | |
83 | ATA_MSG_MALLOC = 0x0010, | |
84 | ATA_MSG_CTL = 0x0020, | |
85 | ATA_MSG_INTR = 0x0040, | |
86 | ATA_MSG_ERR = 0x0080, | |
87 | }; | |
88 | ||
89 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
90 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
91 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
92 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
93 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
94 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
95 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
96 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
97 | ||
98 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
99 | { | |
100 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
101 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
102 | if (!dval) | |
103 | return 0; | |
104 | return (1 << dval) - 1; | |
105 | } | |
106 | ||
1da177e4 LT |
107 | /* defines only for the constants which don't work well as enums */ |
108 | #define ATA_TAG_POISON 0xfafbfcfdU | |
109 | ||
110 | /* move to PCI layer? */ | |
111 | static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) | |
112 | { | |
113 | return &pdev->dev; | |
114 | } | |
115 | ||
116 | enum { | |
117 | /* various global constants */ | |
118 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 119 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 LT |
120 | ATA_MAX_PORTS = 8, |
121 | ATA_DEF_QUEUE = 1, | |
2ab7db1f | 122 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
a6e6ce8e | 123 | ATA_MAX_QUEUE = 32, |
2ab7db1f | 124 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
1da177e4 LT |
125 | ATA_MAX_BUS = 2, |
126 | ATA_DEF_BUSY_WAIT = 10000, | |
127 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, | |
128 | ||
129 | ATA_SHT_EMULATED = 1, | |
130 | ATA_SHT_CMD_PER_LUN = 1, | |
131 | ATA_SHT_THIS_ID = -1, | |
cf482935 | 132 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 LT |
133 | |
134 | /* struct ata_device stuff */ | |
949b38af TH |
135 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
136 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 137 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 138 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 139 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
140 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
141 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 142 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
2557164e | 143 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 144 | |
2557164e KCA |
145 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
146 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
147 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ | |
72fa4b74 | 148 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
1da177e4 | 149 | |
abdda733 TH |
150 | ATA_DFLAG_DETACH = (1 << 16), |
151 | ATA_DFLAG_DETACHED = (1 << 17), | |
152 | ||
1da177e4 LT |
153 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
154 | ATA_DEV_ATA = 1, /* ATA device */ | |
155 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
156 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
157 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
158 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
159 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
160 | ATA_DEV_SEMB = 7, /* SEMB */ | |
161 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
162 | ATA_DEV_NONE = 9, /* no device */ | |
1da177e4 | 163 | |
0c88758b TH |
164 | /* struct ata_link flags */ |
165 | ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */ | |
166 | ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H | |
167 | * Register FIS clearing BSY */ | |
ae791c05 TH |
168 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
169 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
170 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
171 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 172 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 173 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
0c88758b | 174 | |
1da177e4 | 175 | /* struct ata_port flags */ |
949b38af | 176 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 177 | /* (doesn't imply presence) */ |
949b38af TH |
178 | ATA_FLAG_SATA = (1 << 1), |
179 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ | |
180 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ | |
181 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ | |
182 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ | |
183 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ | |
184 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
185 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
186 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
187 | * doesn't handle PIO interrupts */ | |
188 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
7395acb2 | 189 | ATA_FLAG_DEBUGMSG = (1 << 13), |
b2a8bbe6 | 190 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 191 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 192 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 193 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 194 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
949b38af | 195 | |
b51e9e5d TH |
196 | /* The following flag belongs to ap->pflags but is kept in |
197 | * ap->flags because it's referenced in many LLDs and will be | |
198 | * removed in not-too-distant future. | |
199 | */ | |
200 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ | |
201 | ||
202 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ | |
9ec957f2 | 203 | |
b51e9e5d TH |
204 | /* struct ata_port pflags */ |
205 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
206 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
207 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
208 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
209 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
210 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ | |
211 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ | |
f4d6d004 | 212 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 213 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
949b38af | 214 | |
b51e9e5d | 215 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 216 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
64578a3d | 217 | ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ |
949b38af TH |
218 | |
219 | /* struct ata_queued_cmd flags */ | |
220 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
221 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ | |
222 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ | |
1da177e4 | 223 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
27197367 | 224 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 225 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 226 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e61e0672 | 227 | |
9ec957f2 TH |
228 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
229 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
230 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 231 | |
4e5ec5db | 232 | /* host set flags */ |
cca3974e | 233 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 234 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
9bec2e38 | 235 | |
b8b275ef TH |
236 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
237 | ||
1da177e4 | 238 | /* various lengths of time */ |
8d238e01 AC |
239 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
240 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ | |
a2a7a662 TH |
241 | ATA_TMOUT_INTERNAL = 30 * HZ, |
242 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, | |
1da177e4 LT |
243 | |
244 | /* ATA bus states */ | |
245 | BUS_UNKNOWN = 0, | |
246 | BUS_DMA = 1, | |
247 | BUS_IDLE = 2, | |
248 | BUS_NOINTR = 3, | |
249 | BUS_NODATA = 4, | |
250 | BUS_TIMER = 5, | |
251 | BUS_PIO = 6, | |
252 | BUS_EDD = 7, | |
253 | BUS_IDENTIFY = 8, | |
254 | BUS_PACKET = 9, | |
255 | ||
256 | /* SATA port states */ | |
257 | PORT_UNKNOWN = 0, | |
258 | PORT_ENABLED = 1, | |
259 | PORT_DISABLED = 2, | |
260 | ||
261 | /* encoding various smaller bitmaps into a single | |
1da7b0d0 | 262 | * unsigned int bitmap |
1da177e4 | 263 | */ |
b352e57d AC |
264 | ATA_BITS_PIO = 7, |
265 | ATA_BITS_MWDMA = 5, | |
1da7b0d0 TH |
266 | ATA_BITS_UDMA = 8, |
267 | ||
268 | ATA_SHIFT_PIO = 0, | |
269 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, | |
270 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, | |
271 | ||
272 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, | |
273 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, | |
274 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, | |
cedc9a47 JG |
275 | |
276 | /* size of buffer to pad xfers ending on unaligned boundaries */ | |
277 | ATA_DMA_PAD_SZ = 4, | |
278 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, | |
949b38af | 279 | |
0c247c55 TH |
280 | /* ering size */ |
281 | ATA_ERING_SIZE = 32, | |
282 | ||
31cc23b3 TH |
283 | /* return values for ->qc_defer */ |
284 | ATA_DEFER_LINK = 1, | |
285 | ATA_DEFER_PORT = 2, | |
286 | ||
f3e81b19 TH |
287 | /* desc_len for ata_eh_info and context */ |
288 | ATA_EH_DESC_LEN = 80, | |
289 | ||
9be1e979 TH |
290 | /* reset / recovery action types */ |
291 | ATA_EH_REVALIDATE = (1 << 0), | |
292 | ATA_EH_SOFTRESET = (1 << 1), | |
293 | ATA_EH_HARDRESET = (1 << 2), | |
f9df58cb | 294 | ATA_EH_ENABLE_LINK = (1 << 3), |
9be1e979 TH |
295 | |
296 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
9666f400 | 297 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
9be1e979 | 298 | |
f3e81b19 | 299 | /* ata_eh_info->flags */ |
abdda733 | 300 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
13abf50d | 301 | ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ |
1cdaf534 TH |
302 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
303 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
abdda733 | 304 | |
0d64a233 TH |
305 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
306 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
307 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
308 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
309 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ | |
f3e81b19 | 310 | |
0d64a233 | 311 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d TH |
312 | ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
313 | ||
a1e10f7e TH |
314 | /* max tries if error condition is still set after ->error_handler */ |
315 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 316 | |
14d2bac1 TH |
317 | /* how hard are we gonna try to probe/recover devices */ |
318 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 319 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
320 | ATA_EH_PMP_TRIES = 5, |
321 | ATA_EH_PMP_LINK_TRIES = 3, | |
322 | ||
323 | SATA_PMP_SCR_TIMEOUT = 250, | |
f5914a46 | 324 | |
93590859 AC |
325 | /* Horkage types. May be set by libata or controller on drives |
326 | (some horkage may be drive/controller pair dependant */ | |
327 | ||
328 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
329 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
330 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 331 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 332 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
e31e8531 | 333 | ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ |
93328e11 | 334 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
b3a70601 AC |
335 | |
336 | /* DMA mask for user DMA control: User visible values; DO NOT | |
337 | renumber */ | |
338 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
339 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
340 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
1da177e4 LT |
341 | }; |
342 | ||
14be71f4 | 343 | enum hsm_task_states { |
c56b14d2 | 344 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
345 | HSM_ST_FIRST, /* (waiting the device to) |
346 | write CDB or first data block */ | |
c56b14d2 AL |
347 | HSM_ST, /* (waiting the device to) transfer data */ |
348 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 349 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
350 | }; |
351 | ||
a7dac447 | 352 | enum ata_completion_errors { |
11a56d24 TH |
353 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
354 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
355 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
356 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
357 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
358 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
359 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
360 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
361 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 362 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 363 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
364 | }; |
365 | ||
1da177e4 LT |
366 | /* forward declarations */ |
367 | struct scsi_device; | |
368 | struct ata_port_operations; | |
369 | struct ata_port; | |
cc0680a5 | 370 | struct ata_link; |
1da177e4 LT |
371 | struct ata_queued_cmd; |
372 | ||
373 | /* typedefs */ | |
77853bf2 | 374 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
375 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
376 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 377 | unsigned long deadline); |
cc0680a5 | 378 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 LT |
379 | |
380 | struct ata_ioports { | |
0d5ff566 TH |
381 | void __iomem *cmd_addr; |
382 | void __iomem *data_addr; | |
383 | void __iomem *error_addr; | |
384 | void __iomem *feature_addr; | |
385 | void __iomem *nsect_addr; | |
386 | void __iomem *lbal_addr; | |
387 | void __iomem *lbam_addr; | |
388 | void __iomem *lbah_addr; | |
389 | void __iomem *device_addr; | |
390 | void __iomem *status_addr; | |
391 | void __iomem *command_addr; | |
392 | void __iomem *altstatus_addr; | |
393 | void __iomem *ctl_addr; | |
394 | void __iomem *bmdma_addr; | |
395 | void __iomem *scr_addr; | |
1da177e4 LT |
396 | }; |
397 | ||
cca3974e | 398 | struct ata_host { |
1da177e4 LT |
399 | spinlock_t lock; |
400 | struct device *dev; | |
0d5ff566 | 401 | void __iomem * const *iomap; |
1da177e4 LT |
402 | unsigned int n_ports; |
403 | void *private_data; | |
057ace5e | 404 | const struct ata_port_operations *ops; |
5444a6f4 | 405 | unsigned long flags; |
fafbae87 TH |
406 | #ifdef CONFIG_ATA_ACPI |
407 | acpi_handle acpi_handle; | |
408 | #endif | |
032af1ce | 409 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 410 | struct ata_port *ports[0]; |
1da177e4 LT |
411 | }; |
412 | ||
413 | struct ata_queued_cmd { | |
414 | struct ata_port *ap; | |
415 | struct ata_device *dev; | |
416 | ||
417 | struct scsi_cmnd *scsicmd; | |
418 | void (*scsidone)(struct scsi_cmnd *); | |
419 | ||
420 | struct ata_taskfile tf; | |
421 | u8 cdb[ATAPI_CDB_LEN]; | |
422 | ||
423 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
424 | unsigned int tag; | |
425 | unsigned int n_elem; | |
cedc9a47 | 426 | unsigned int orig_n_elem; |
1da177e4 LT |
427 | |
428 | int dma_dir; | |
429 | ||
cedc9a47 | 430 | unsigned int pad_len; |
5a5dbd18 | 431 | unsigned int sect_size; |
cedc9a47 | 432 | |
1da177e4 LT |
433 | unsigned int nbytes; |
434 | unsigned int curbytes; | |
435 | ||
436 | unsigned int cursg; | |
437 | unsigned int cursg_ofs; | |
438 | ||
439 | struct scatterlist sgent; | |
cedc9a47 | 440 | struct scatterlist pad_sgent; |
1da177e4 LT |
441 | void *buf_virt; |
442 | ||
cedc9a47 JG |
443 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
444 | struct scatterlist *__sg; | |
1da177e4 | 445 | |
a22e2eb0 | 446 | unsigned int err_mask; |
e61e0672 | 447 | struct ata_taskfile result_tf; |
1da177e4 LT |
448 | ata_qc_cb_t complete_fn; |
449 | ||
1da177e4 | 450 | void *private_data; |
1c50dc83 | 451 | void *lldd_task; |
1da177e4 LT |
452 | }; |
453 | ||
cca3974e | 454 | struct ata_port_stats { |
1da177e4 LT |
455 | unsigned long unhandled_irq; |
456 | unsigned long idle_irq; | |
457 | unsigned long rw_reqbuf; | |
458 | }; | |
459 | ||
0c247c55 TH |
460 | struct ata_ering_entry { |
461 | int is_io; | |
462 | unsigned int err_mask; | |
463 | u64 timestamp; | |
464 | }; | |
465 | ||
466 | struct ata_ering { | |
467 | int cursor; | |
468 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
469 | }; | |
470 | ||
1da177e4 | 471 | struct ata_device { |
9af5c9c9 | 472 | struct ata_link *link; |
72fa4b74 | 473 | unsigned int devno; /* 0 or 1 */ |
1da177e4 | 474 | unsigned long flags; /* ATA_DFLAG_xxx */ |
75683fe7 | 475 | unsigned int horkage; /* List of broken features */ |
3edebac4 | 476 | struct scsi_device *sdev; /* attached SCSI device */ |
fafbae87 TH |
477 | #ifdef CONFIG_ATA_ACPI |
478 | acpi_handle acpi_handle; | |
479 | #endif | |
72fa4b74 TH |
480 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
481 | u64 n_sectors; /* size of device, if ATA */ | |
1da177e4 | 482 | unsigned int class; /* ATA_DEV_xxx */ |
e0a71752 TH |
483 | |
484 | union { | |
485 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
486 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
487 | }; | |
488 | ||
1da177e4 LT |
489 | u8 pio_mode; |
490 | u8 dma_mode; | |
491 | u8 xfer_mode; | |
492 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
493 | ||
8cbd6df1 AL |
494 | unsigned int multi_count; /* sectors count for |
495 | READ/WRITE MULTIPLE */ | |
b00eec1d | 496 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 497 | unsigned int cdb_len; |
8bf62ece | 498 | |
acf356b1 TH |
499 | /* per-dev xfer mask */ |
500 | unsigned int pio_mask; | |
501 | unsigned int mwdma_mask; | |
502 | unsigned int udma_mask; | |
503 | ||
8bf62ece AL |
504 | /* for CHS addressing */ |
505 | u16 cylinders; /* Number of cylinders */ | |
506 | u16 heads; /* Number of heads */ | |
507 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 TH |
508 | |
509 | /* error history */ | |
510 | struct ata_ering ering; | |
7d47e8d4 | 511 | int spdn_cnt; |
1da177e4 LT |
512 | }; |
513 | ||
72fa4b74 TH |
514 | /* Offset into struct ata_device. Fields above it are maintained |
515 | * acress device init. Fields below are zeroed. | |
516 | */ | |
517 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) | |
518 | ||
f3e81b19 TH |
519 | struct ata_eh_info { |
520 | struct ata_device *dev; /* offending device */ | |
521 | u32 serror; /* SError from LLDD */ | |
522 | unsigned int err_mask; /* port-wide err_mask */ | |
523 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 524 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 525 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 526 | |
abdda733 TH |
527 | unsigned int probe_mask; |
528 | ||
f3e81b19 TH |
529 | char desc[ATA_EH_DESC_LEN]; |
530 | int desc_len; | |
531 | }; | |
532 | ||
533 | struct ata_eh_context { | |
534 | struct ata_eh_info i; | |
535 | int tries[ATA_MAX_DEVICES]; | |
abdda733 TH |
536 | unsigned int classes[ATA_MAX_DEVICES]; |
537 | unsigned int did_probe_mask; | |
f3e81b19 TH |
538 | }; |
539 | ||
64578a3d TH |
540 | struct ata_acpi_drive |
541 | { | |
542 | u32 pio; | |
543 | u32 dma; | |
544 | } __packed; | |
545 | ||
546 | struct ata_acpi_gtm { | |
547 | struct ata_acpi_drive drive[2]; | |
548 | u32 flags; | |
549 | } __packed; | |
550 | ||
9af5c9c9 TH |
551 | struct ata_link { |
552 | struct ata_port *ap; | |
8989805d | 553 | int pmp; /* port multiplier port # */ |
9af5c9c9 TH |
554 | |
555 | unsigned int active_tag; /* active tag on this link */ | |
556 | u32 sactive; /* active NCQ commands */ | |
557 | ||
0c88758b TH |
558 | unsigned int flags; /* ATA_LFLAG_xxx */ |
559 | ||
9af5c9c9 TH |
560 | unsigned int hw_sata_spd_limit; |
561 | unsigned int sata_spd_limit; | |
562 | unsigned int sata_spd; /* current SATA PHY speed */ | |
563 | ||
564 | /* record runtime error info, protected by host_set lock */ | |
565 | struct ata_eh_info eh_info; | |
566 | /* EH context */ | |
567 | struct ata_eh_context eh_context; | |
568 | ||
569 | struct ata_device device[ATA_MAX_DEVICES]; | |
570 | }; | |
571 | ||
1da177e4 | 572 | struct ata_port { |
cca3974e | 573 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
057ace5e | 574 | const struct ata_port_operations *ops; |
ba6a1308 | 575 | spinlock_t *lock; |
1da177e4 | 576 | unsigned long flags; /* ATA_FLAG_xxx */ |
b51e9e5d | 577 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e TH |
578 | unsigned int print_id; /* user visible unique port ID */ |
579 | unsigned int port_no; /* 0 based port no. inside the host */ | |
1da177e4 LT |
580 | |
581 | struct ata_prd *prd; /* our SG list */ | |
582 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
583 | ||
cedc9a47 JG |
584 | void *pad; /* array of DMA pad buffers */ |
585 | dma_addr_t pad_dma; | |
586 | ||
1da177e4 LT |
587 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
588 | ||
589 | u8 ctl; /* cache of ATA control register */ | |
590 | u8 last_ctl; /* Cache last written value */ | |
1da177e4 LT |
591 | unsigned int pio_mask; |
592 | unsigned int mwdma_mask; | |
593 | unsigned int udma_mask; | |
594 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
595 | |
596 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
6cec4a39 | 597 | unsigned long qc_allocated; |
dedaf2b0 | 598 | unsigned int qc_active; |
da917d69 | 599 | int nr_active_links; /* #links with active qcs */ |
dedaf2b0 | 600 | |
9af5c9c9 | 601 | struct ata_link link; /* host default link */ |
1da177e4 | 602 | |
8989805d TH |
603 | int nr_pmp_links; /* nr of available PMP links */ |
604 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 605 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 606 | |
cca3974e JG |
607 | struct ata_port_stats stats; |
608 | struct ata_host *host; | |
2f1f610b | 609 | struct device *dev; |
1da177e4 | 610 | |
65f27f38 | 611 | void *port_task_data; |
52bad64d DH |
612 | struct delayed_work port_task; |
613 | struct delayed_work hotplug_task; | |
3b01b8af | 614 | struct work_struct scsi_rescan_task; |
86e45b6b | 615 | |
14be71f4 | 616 | unsigned int hsm_task_state; |
1da177e4 | 617 | |
bfd60579 | 618 | u32 msg_enable; |
a72ec4ce | 619 | struct list_head eh_done_q; |
c6cf9e99 | 620 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 621 | int eh_tries; |
bfd60579 | 622 | |
500530f6 TH |
623 | pm_message_t pm_mesg; |
624 | int *pm_result; | |
625 | ||
5ddf24c5 TH |
626 | struct timer_list fastdrain_timer; |
627 | unsigned long fastdrain_cnt; | |
628 | ||
1da177e4 | 629 | void *private_data; |
fe635c7e | 630 | |
fafbae87 TH |
631 | #ifdef CONFIG_ATA_ACPI |
632 | acpi_handle acpi_handle; | |
64578a3d | 633 | struct ata_acpi_gtm acpi_gtm; |
fafbae87 | 634 | #endif |
fe635c7e | 635 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
1da177e4 LT |
636 | }; |
637 | ||
638 | struct ata_port_operations { | |
cd0d3bbc | 639 | void (*dev_config) (struct ata_device *); |
1da177e4 LT |
640 | |
641 | void (*set_piomode) (struct ata_port *, struct ata_device *); | |
642 | void (*set_dmamode) (struct ata_port *, struct ata_device *); | |
a76b62ca | 643 | unsigned long (*mode_filter) (struct ata_device *, unsigned long); |
1da177e4 | 644 | |
057ace5e | 645 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
646 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
647 | ||
057ace5e | 648 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 LT |
649 | u8 (*check_status)(struct ata_port *ap); |
650 | u8 (*check_altstatus)(struct ata_port *ap); | |
1da177e4 LT |
651 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
652 | ||
c19ba8af | 653 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
0260731f | 654 | int (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev); |
c19ba8af | 655 | |
be0d18df AC |
656 | int (*cable_detect) (struct ata_port *ap); |
657 | ||
b229a7b0 | 658 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
1da177e4 LT |
659 | |
660 | void (*bmdma_setup) (struct ata_queued_cmd *qc); | |
661 | void (*bmdma_start) (struct ata_queued_cmd *qc); | |
662 | ||
a6b2c5d4 AC |
663 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
664 | ||
31cc23b3 | 665 | int (*qc_defer) (struct ata_queued_cmd *qc); |
1da177e4 | 666 | void (*qc_prep) (struct ata_queued_cmd *qc); |
9a3d9eb0 | 667 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
1da177e4 | 668 | |
e0a71752 TH |
669 | /* port multiplier */ |
670 | void (*pmp_attach) (struct ata_port *ap); | |
671 | void (*pmp_detach) (struct ata_port *ap); | |
e0a71752 | 672 | |
9ec957f2 TH |
673 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
674 | * indicates that new-style EH is in place. | |
675 | */ | |
676 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ | |
677 | ||
678 | void (*freeze) (struct ata_port *ap); | |
679 | void (*thaw) (struct ata_port *ap); | |
680 | void (*error_handler) (struct ata_port *ap); | |
681 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); | |
1da177e4 | 682 | |
7d12e780 | 683 | irq_handler_t irq_handler; |
1da177e4 | 684 | void (*irq_clear) (struct ata_port *); |
83625006 | 685 | u8 (*irq_on) (struct ata_port *); |
1da177e4 | 686 | |
da3dbb17 TH |
687 | int (*scr_read) (struct ata_port *ap, unsigned int sc_reg, u32 *val); |
688 | int (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 689 | |
500530f6 TH |
690 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
691 | int (*port_resume) (struct ata_port *ap); | |
692 | ||
1da177e4 LT |
693 | int (*port_start) (struct ata_port *ap); |
694 | void (*port_stop) (struct ata_port *ap); | |
695 | ||
cca3974e | 696 | void (*host_stop) (struct ata_host *host); |
1da177e4 | 697 | |
b73fc89f | 698 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
1da177e4 LT |
699 | u8 (*bmdma_status) (struct ata_port *ap); |
700 | }; | |
701 | ||
702 | struct ata_port_info { | |
d0be4a7d | 703 | struct scsi_host_template *sht; |
cca3974e | 704 | unsigned long flags; |
0c88758b | 705 | unsigned long link_flags; |
1da177e4 LT |
706 | unsigned long pio_mask; |
707 | unsigned long mwdma_mask; | |
708 | unsigned long udma_mask; | |
057ace5e | 709 | const struct ata_port_operations *port_ops; |
21b0ad4f | 710 | irq_handler_t irq_handler; |
e99f8b5e | 711 | void *private_data; |
1da177e4 LT |
712 | }; |
713 | ||
452503f9 AC |
714 | struct ata_timing { |
715 | unsigned short mode; /* ATA mode */ | |
716 | unsigned short setup; /* t1 */ | |
717 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
718 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
719 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
720 | unsigned short active; /* t2 or tD */ | |
721 | unsigned short recover; /* t2i or tK */ | |
722 | unsigned short cycle; /* t0 */ | |
723 | unsigned short udma; /* t2CYCTYP/2 */ | |
724 | }; | |
725 | ||
726 | #define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin) | |
1da177e4 | 727 | |
e9c83914 TH |
728 | extern const unsigned long sata_deb_timing_normal[]; |
729 | extern const unsigned long sata_deb_timing_hotplug[]; | |
730 | extern const unsigned long sata_deb_timing_long[]; | |
731 | ||
dd5b06c4 | 732 | extern const struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 733 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 734 | |
e9c83914 TH |
735 | static inline const unsigned long * |
736 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
737 | { | |
738 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
739 | return sata_deb_timing_hotplug; | |
740 | else | |
741 | return sata_deb_timing_normal; | |
742 | } | |
d7bb4cc7 | 743 | |
dd5b06c4 TH |
744 | static inline int ata_port_is_dummy(struct ata_port *ap) |
745 | { | |
746 | return ap->ops == &ata_dummy_port_ops; | |
747 | } | |
748 | ||
936fd732 | 749 | extern void sata_print_link_status(struct ata_link *link); |
1da177e4 LT |
750 | extern void ata_port_probe(struct ata_port *); |
751 | extern void __sata_phy_reset(struct ata_port *ap); | |
752 | extern void sata_phy_reset(struct ata_port *ap); | |
753 | extern void ata_bus_reset(struct ata_port *ap); | |
936fd732 TH |
754 | extern int sata_set_spd(struct ata_link *link); |
755 | extern int sata_link_debounce(struct ata_link *link, | |
756 | const unsigned long *params, unsigned long deadline); | |
757 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
758 | unsigned long deadline); | |
cc0680a5 TH |
759 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
760 | extern int ata_std_softreset(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 761 | unsigned long deadline); |
cc0680a5 TH |
762 | extern int sata_link_hardreset(struct ata_link *link, |
763 | const unsigned long *timing, unsigned long deadline); | |
764 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, | |
d4b2bab4 | 765 | unsigned long deadline); |
cc0680a5 | 766 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
1da177e4 LT |
767 | extern void ata_port_disable(struct ata_port *); |
768 | extern void ata_std_ports(struct ata_ioports *ioaddr); | |
769 | #ifdef CONFIG_PCI | |
1626aeb8 TH |
770 | extern int ata_pci_init_one (struct pci_dev *pdev, |
771 | const struct ata_port_info * const * ppi); | |
1da177e4 | 772 | extern void ata_pci_remove_one (struct pci_dev *pdev); |
6ffa01d8 | 773 | #ifdef CONFIG_PM |
3c5100c1 | 774 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
553c4aa6 | 775 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
3c5100c1 | 776 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
9b847548 | 777 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
6ffa01d8 | 778 | #endif |
17bb34a3 | 779 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); |
1da177e4 | 780 | #endif /* CONFIG_PCI */ |
f3187195 | 781 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
782 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
783 | const struct ata_port_info * const * ppi, int n_ports); | |
ecef7253 | 784 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
785 | extern int ata_host_register(struct ata_host *host, |
786 | struct scsi_host_template *sht); | |
f5cda257 TH |
787 | extern int ata_host_activate(struct ata_host *host, int irq, |
788 | irq_handler_t irq_handler, unsigned long irq_flags, | |
789 | struct scsi_host_template *sht); | |
0529c159 | 790 | extern void ata_host_detach(struct ata_host *host); |
cca3974e JG |
791 | extern void ata_host_init(struct ata_host *, struct device *, |
792 | unsigned long, const struct ata_port_operations *); | |
193515d5 | 793 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 LT |
794 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
795 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); | |
80289167 | 796 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 797 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 BK |
798 | struct ata_port_info *, struct Scsi_Host *); |
799 | extern int ata_sas_port_init(struct ata_port *); | |
800 | extern int ata_sas_port_start(struct ata_port *ap); | |
801 | extern void ata_sas_port_stop(struct ata_port *ap); | |
802 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
803 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), | |
804 | struct ata_port *ap); | |
1da177e4 | 805 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
936fd732 TH |
806 | extern int sata_scr_valid(struct ata_link *link); |
807 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
808 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
809 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
810 | extern int ata_link_online(struct ata_link *link); | |
811 | extern int ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 812 | #ifdef CONFIG_PM |
cca3974e JG |
813 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
814 | extern void ata_host_resume(struct ata_host *host); | |
6ffa01d8 | 815 | #endif |
67846b30 | 816 | extern int ata_ratelimit(void); |
d1adc1bb TH |
817 | extern int ata_busy_sleep(struct ata_port *ap, |
818 | unsigned long timeout_pat, unsigned long timeout); | |
d4b2bab4 | 819 | extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); |
65f27f38 | 820 | extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, |
86e45b6b | 821 | void *data, unsigned long delay); |
c22daff4 TH |
822 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
823 | unsigned long interval_msec, | |
824 | unsigned long timeout_msec); | |
3f19859e TH |
825 | extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present, |
826 | u8 *r_err); | |
67846b30 | 827 | |
1da177e4 LT |
828 | /* |
829 | * Default driver ops implementations | |
830 | */ | |
057ace5e | 831 | extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 | 832 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
9977126c TH |
833 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
834 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 835 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
1da177e4 LT |
836 | extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); |
837 | extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); | |
838 | extern u8 ata_check_status(struct ata_port *ap); | |
839 | extern u8 ata_altstatus(struct ata_port *ap); | |
057ace5e | 840 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
1da177e4 | 841 | extern int ata_port_start (struct ata_port *ap); |
d92e74d3 | 842 | extern int ata_sff_port_start (struct ata_port *ap); |
7d12e780 | 843 | extern irqreturn_t ata_interrupt (int irq, void *dev_instance); |
0d5ff566 TH |
844 | extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, |
845 | unsigned int buflen, int write_data); | |
846 | extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, | |
847 | unsigned int buflen, int write_data); | |
31cc23b3 | 848 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
d26fc955 | 849 | extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 | 850 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
e46834cd | 851 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
9a3d9eb0 | 852 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
1da177e4 LT |
853 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
854 | unsigned int buflen); | |
855 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, | |
856 | unsigned int n_elem); | |
057ace5e | 857 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 858 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
859 | extern void ata_id_string(const u16 *id, unsigned char *s, |
860 | unsigned int ofs, unsigned int len); | |
861 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
862 | unsigned int ofs, unsigned int len); | |
10305f0f | 863 | extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); |
1da177e4 LT |
864 | extern void ata_bmdma_setup (struct ata_queued_cmd *qc); |
865 | extern void ata_bmdma_start (struct ata_queued_cmd *qc); | |
b73fc89f | 866 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
1da177e4 LT |
867 | extern u8 ata_bmdma_status(struct ata_port *ap); |
868 | extern void ata_bmdma_irq_clear(struct ata_port *ap); | |
6d97dbd7 TH |
869 | extern void ata_bmdma_freeze(struct ata_port *ap); |
870 | extern void ata_bmdma_thaw(struct ata_port *ap); | |
f5914a46 | 871 | extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
6d97dbd7 TH |
872 | ata_reset_fn_t softreset, |
873 | ata_reset_fn_t hardreset, | |
874 | ata_postreset_fn_t postreset); | |
875 | extern void ata_bmdma_error_handler(struct ata_port *ap); | |
876 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); | |
9a1004d0 TH |
877 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
878 | u8 status, int in_wq); | |
f686bcb8 | 879 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
dedaf2b0 TH |
880 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
881 | void (*finish_qc)(struct ata_queued_cmd *)); | |
3373efd8 | 882 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
1da177e4 LT |
883 | void (*done)(struct scsi_cmnd *)); |
884 | extern int ata_std_bios_param(struct scsi_device *sdev, | |
885 | struct block_device *bdev, | |
886 | sector_t capacity, int geom[]); | |
887 | extern int ata_scsi_slave_config(struct scsi_device *sdev); | |
83c47bcb | 888 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e TH |
889 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
890 | int queue_depth); | |
3373efd8 | 891 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 892 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
83625006 | 893 | extern u8 ata_irq_on(struct ata_port *ap); |
1da177e4 | 894 | |
be0d18df AC |
895 | extern int ata_cable_40wire(struct ata_port *ap); |
896 | extern int ata_cable_80wire(struct ata_port *ap); | |
897 | extern int ata_cable_sata(struct ata_port *ap); | |
898 | extern int ata_cable_unknown(struct ata_port *ap); | |
899 | ||
452503f9 AC |
900 | /* |
901 | * Timing helpers | |
902 | */ | |
1bc4ccff AC |
903 | |
904 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); | |
452503f9 AC |
905 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
906 | struct ata_timing *, int, int); | |
907 | extern void ata_timing_merge(const struct ata_timing *, | |
908 | const struct ata_timing *, struct ata_timing *, | |
909 | unsigned int); | |
910 | ||
911 | enum { | |
912 | ATA_TIMING_SETUP = (1 << 0), | |
913 | ATA_TIMING_ACT8B = (1 << 1), | |
914 | ATA_TIMING_REC8B = (1 << 2), | |
915 | ATA_TIMING_CYC8B = (1 << 3), | |
916 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
917 | ATA_TIMING_CYC8B, | |
918 | ATA_TIMING_ACTIVE = (1 << 4), | |
919 | ATA_TIMING_RECOVER = (1 << 5), | |
920 | ATA_TIMING_CYCLE = (1 << 6), | |
921 | ATA_TIMING_UDMA = (1 << 7), | |
922 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | | |
923 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
924 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
925 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, | |
926 | }; | |
927 | ||
e1ddb4b6 AC |
928 | /* libata-acpi.c */ |
929 | #ifdef CONFIG_ATA_ACPI | |
930 | extern int ata_acpi_cbl_80wire(struct ata_port *ap); | |
badff03d AC |
931 | int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm); |
932 | int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm); | |
e1ddb4b6 AC |
933 | #else |
934 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } | |
935 | #endif | |
1da177e4 LT |
936 | |
937 | #ifdef CONFIG_PCI | |
938 | struct pci_bits { | |
939 | unsigned int reg; /* PCI config register to read */ | |
940 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
941 | unsigned long mask; | |
942 | unsigned long val; | |
943 | }; | |
944 | ||
d583bc18 | 945 | extern int ata_pci_init_sff_host(struct ata_host *host); |
1626aeb8 | 946 | extern int ata_pci_init_bmdma(struct ata_host *host); |
d583bc18 TH |
947 | extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, |
948 | const struct ata_port_info * const * ppi, | |
949 | struct ata_host **r_host); | |
057ace5e | 950 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
a76b62ca | 951 | extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); |
1da177e4 LT |
952 | #endif /* CONFIG_PCI */ |
953 | ||
3af9a77a TH |
954 | /* |
955 | * PMP | |
956 | */ | |
31f88384 | 957 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
3af9a77a TH |
958 | extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline); |
959 | extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class, | |
960 | unsigned long deadline); | |
961 | extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class); | |
962 | extern void sata_pmp_do_eh(struct ata_port *ap, | |
963 | ata_prereset_fn_t prereset, ata_reset_fn_t softreset, | |
964 | ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, | |
965 | ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset, | |
966 | ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset); | |
967 | ||
ece1d636 TH |
968 | /* |
969 | * EH | |
970 | */ | |
ece1d636 | 971 | extern void ata_eng_timeout(struct ata_port *ap); |
7b70fc03 TH |
972 | |
973 | extern void ata_port_schedule_eh(struct ata_port *ap); | |
dbd82616 | 974 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 975 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 976 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 977 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
978 | |
979 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
980 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 981 | |
ece1d636 TH |
982 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
983 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
984 | ||
f5914a46 TH |
985 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
986 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
987 | ata_postreset_fn_t postreset); | |
022bdb07 | 988 | |
61440db6 TH |
989 | /* |
990 | * printk helpers | |
991 | */ | |
992 | #define ata_port_printk(ap, lv, fmt, args...) \ | |
44877b4e | 993 | printk(lv"ata%u: "fmt, (ap)->print_id , ##args) |
61440db6 | 994 | |
8989805d TH |
995 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
996 | if ((link)->ap->nr_pmp_links) \ | |
997 | printk(lv"ata%u.%02u: "fmt, (link)->ap->print_id, \ | |
998 | (link)->pmp , ##args); \ | |
999 | else \ | |
1000 | printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args); \ | |
1001 | } while(0) | |
9af5c9c9 | 1002 | |
61440db6 | 1003 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
8989805d TH |
1004 | printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, \ |
1005 | (dev)->link->pmp + (dev)->devno , ##args) | |
1da177e4 | 1006 | |
f3e81b19 TH |
1007 | /* |
1008 | * ata_eh_info helpers | |
1009 | */ | |
cb94c1cf TH |
1010 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
1011 | __attribute__ ((format (printf, 2, 3))); | |
1012 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) | |
1013 | __attribute__ ((format (printf, 2, 3))); | |
b64bbc39 | 1014 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1015 | |
f8f1e1cc | 1016 | static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi) |
084fe639 | 1017 | { |
f8f1e1cc | 1018 | ehi->flags |= ATA_EHI_RESUME_LINK; |
084fe639 TH |
1019 | ehi->action |= ATA_EH_SOFTRESET; |
1020 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; | |
1021 | } | |
1022 | ||
c0b6c037 TH |
1023 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1024 | { | |
f8f1e1cc TH |
1025 | ata_ehi_schedule_probe(ehi); |
1026 | ehi->flags |= ATA_EHI_HOTPLUGGED; | |
f9df58cb | 1027 | ehi->action |= ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1028 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1029 | } | |
1030 | ||
cbcdd875 TH |
1031 | /* |
1032 | * port description helpers | |
1033 | */ | |
1034 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) | |
1035 | __attribute__ ((format (printf, 2, 3))); | |
1036 | #ifdef CONFIG_PCI | |
1037 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1038 | const char *name); | |
1039 | #endif | |
1040 | ||
61440db6 TH |
1041 | /* |
1042 | * qc helpers | |
1043 | */ | |
972c26bd JG |
1044 | static inline int |
1045 | ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) | |
1046 | { | |
1047 | if (sg == &qc->pad_sgent) | |
1048 | return 1; | |
1049 | if (qc->pad_len) | |
1050 | return 0; | |
1051 | if (((sg - qc->__sg) + 1) == qc->n_elem) | |
1052 | return 1; | |
1053 | return 0; | |
1054 | } | |
1055 | ||
cc1887f3 TH |
1056 | static inline struct scatterlist * |
1057 | ata_qc_first_sg(struct ata_queued_cmd *qc) | |
1058 | { | |
1059 | if (qc->n_elem) | |
1060 | return qc->__sg; | |
1061 | if (qc->pad_len) | |
1062 | return &qc->pad_sgent; | |
1063 | return NULL; | |
1064 | } | |
1065 | ||
cedc9a47 JG |
1066 | static inline struct scatterlist * |
1067 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) | |
1068 | { | |
1069 | if (sg == &qc->pad_sgent) | |
1070 | return NULL; | |
1071 | if (++sg - qc->__sg < qc->n_elem) | |
1072 | return sg; | |
cc1887f3 TH |
1073 | if (qc->pad_len) |
1074 | return &qc->pad_sgent; | |
1075 | return NULL; | |
cedc9a47 JG |
1076 | } |
1077 | ||
1078 | #define ata_for_each_sg(sg, qc) \ | |
cc1887f3 | 1079 | for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) |
cedc9a47 | 1080 | |
1da177e4 LT |
1081 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1082 | { | |
1083 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1084 | } | |
1085 | ||
2ab7db1f TH |
1086 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1087 | { | |
1088 | return tag == ATA_MAX_QUEUE - 1; | |
1089 | } | |
1090 | ||
5806db22 TH |
1091 | /* |
1092 | * device helpers | |
1093 | */ | |
e1211e3f | 1094 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1095 | { |
e0a71752 TH |
1096 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
1097 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; | |
597afd21 TH |
1098 | } |
1099 | ||
e1211e3f | 1100 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1101 | { |
e0a71752 TH |
1102 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1103 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1104 | } |
1105 | ||
002c8054 TH |
1106 | static inline unsigned int ata_class_absent(unsigned int class) |
1107 | { | |
1108 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1109 | } | |
1110 | ||
e1211e3f TH |
1111 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1112 | { | |
1113 | return ata_class_enabled(dev->class); | |
1114 | } | |
1115 | ||
1116 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1117 | { | |
1118 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1119 | } |
1120 | ||
002c8054 TH |
1121 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1122 | { | |
1123 | return ata_class_absent(dev->class); | |
1124 | } | |
1125 | ||
5806db22 | 1126 | /* |
f58229f8 | 1127 | * link helpers |
5806db22 | 1128 | */ |
8989805d TH |
1129 | static inline int ata_is_host_link(const struct ata_link *link) |
1130 | { | |
1131 | return link == &link->ap->link; | |
1132 | } | |
1133 | ||
f58229f8 | 1134 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1135 | { |
8989805d | 1136 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1137 | return 2; |
1138 | return 1; | |
1139 | } | |
1140 | ||
da917d69 TH |
1141 | static inline int ata_link_active(struct ata_link *link) |
1142 | { | |
1143 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1144 | } | |
1145 | ||
8989805d TH |
1146 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
1147 | { | |
1148 | if (ap->nr_pmp_links) | |
1149 | return ap->pmp_link; | |
1150 | return &ap->link; | |
1151 | } | |
1152 | ||
1153 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) | |
1154 | { | |
1155 | struct ata_port *ap = link->ap; | |
1156 | ||
1157 | if (link == &ap->link) { | |
1158 | if (!ap->nr_pmp_links) | |
1159 | return NULL; | |
1160 | return ap->pmp_link; | |
1161 | } | |
1162 | ||
1163 | if (++link - ap->pmp_link < ap->nr_pmp_links) | |
1164 | return link; | |
1165 | return NULL; | |
1166 | } | |
1167 | ||
1168 | #define __ata_port_for_each_link(lk, ap) \ | |
1169 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) | |
1170 | ||
1171 | #define ata_port_for_each_link(link, ap) \ | |
1172 | for ((link) = ata_port_first_link(ap); (link); \ | |
1173 | (link) = ata_port_next_link(link)) | |
f58229f8 TH |
1174 | |
1175 | #define ata_link_for_each_dev(dev, link) \ | |
1176 | for ((dev) = (link)->device; \ | |
1177 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ | |
1178 | (dev)++) | |
1179 | ||
1180 | #define ata_link_for_each_dev_reverse(dev, link) \ | |
1181 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ | |
1182 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) | |
5806db22 | 1183 | |
1da177e4 LT |
1184 | static inline u8 ata_chk_status(struct ata_port *ap) |
1185 | { | |
1186 | return ap->ops->check_status(ap); | |
1187 | } | |
1188 | ||
6d1245bf TH |
1189 | /** |
1190 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1191 | * @dev: ATA device to test for | |
1192 | * | |
1193 | * LOCKING: | |
1194 | * spin_lock_irqsave(host lock) | |
1195 | * | |
1196 | * RETURNS: | |
1197 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1198 | */ | |
1199 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1200 | { | |
1201 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1202 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1203 | } | |
0baab86b EF |
1204 | |
1205 | /** | |
1206 | * ata_pause - Flush writes and pause 400 nanoseconds. | |
1207 | * @ap: Port to wait for. | |
1208 | * | |
1209 | * LOCKING: | |
1210 | * Inherited from caller. | |
1211 | */ | |
1212 | ||
1da177e4 LT |
1213 | static inline void ata_pause(struct ata_port *ap) |
1214 | { | |
1215 | ata_altstatus(ap); | |
1216 | ndelay(400); | |
1217 | } | |
1218 | ||
0baab86b EF |
1219 | |
1220 | /** | |
1221 | * ata_busy_wait - Wait for a port status register | |
1222 | * @ap: Port to wait for. | |
0777721c A |
1223 | * @bits: bits that must be clear |
1224 | * @max: number of 10uS waits to perform | |
0baab86b EF |
1225 | * |
1226 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1227 | * status register to be cleared. | |
1228 | * Returns final value of status register. | |
1229 | * | |
1230 | * LOCKING: | |
1231 | * Inherited from caller. | |
1232 | */ | |
1233 | ||
1da177e4 LT |
1234 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
1235 | unsigned int max) | |
1236 | { | |
1237 | u8 status; | |
1238 | ||
1239 | do { | |
1240 | udelay(10); | |
1241 | status = ata_chk_status(ap); | |
1242 | max--; | |
d1adc1bb | 1243 | } while (status != 0xff && (status & bits) && (max > 0)); |
1da177e4 LT |
1244 | |
1245 | return status; | |
1246 | } | |
1247 | ||
0baab86b EF |
1248 | |
1249 | /** | |
1250 | * ata_wait_idle - Wait for a port to be idle. | |
1251 | * @ap: Port to wait for. | |
1252 | * | |
1253 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1254 | * Returns final value of status register. | |
1255 | * | |
1256 | * LOCKING: | |
1257 | * Inherited from caller. | |
1258 | */ | |
1259 | ||
1da177e4 LT |
1260 | static inline u8 ata_wait_idle(struct ata_port *ap) |
1261 | { | |
1262 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); | |
1263 | ||
15529456 | 1264 | #ifdef ATA_DEBUG |
55f3952d | 1265 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
15529456 TH |
1266 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
1267 | status); | |
1268 | #endif | |
1da177e4 LT |
1269 | |
1270 | return status; | |
1271 | } | |
1272 | ||
1273 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) | |
1274 | { | |
1275 | qc->tf.ctl |= ATA_NIEN; | |
1276 | } | |
1277 | ||
f69499f4 TH |
1278 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1279 | unsigned int tag) | |
1da177e4 LT |
1280 | { |
1281 | if (likely(ata_tag_valid(tag))) | |
1282 | return &ap->qcmd[tag]; | |
1283 | return NULL; | |
1284 | } | |
1285 | ||
f69499f4 TH |
1286 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1287 | unsigned int tag) | |
1288 | { | |
1289 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1290 | ||
1291 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1292 | return qc; | |
1293 | ||
1294 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1295 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1296 | return qc; | |
1297 | ||
1298 | return NULL; | |
1299 | } | |
1300 | ||
3373efd8 | 1301 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1302 | { |
1303 | memset(tf, 0, sizeof(*tf)); | |
1304 | ||
9af5c9c9 | 1305 | tf->ctl = dev->link->ap->ctl; |
3373efd8 | 1306 | if (dev->devno == 0) |
1da177e4 LT |
1307 | tf->device = ATA_DEVICE_OBS; |
1308 | else | |
1309 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1310 | } | |
1311 | ||
2c13b7ce JG |
1312 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1313 | { | |
501e0c50 | 1314 | qc->dma_dir = DMA_NONE; |
2c13b7ce JG |
1315 | qc->__sg = NULL; |
1316 | qc->flags = 0; | |
726f0785 | 1317 | qc->cursg = qc->cursg_ofs = 0; |
2c13b7ce | 1318 | qc->nbytes = qc->curbytes = 0; |
7a801184 | 1319 | qc->n_elem = 0; |
a22e2eb0 | 1320 | qc->err_mask = 0; |
d0f29485 | 1321 | qc->pad_len = 0; |
5a5dbd18 | 1322 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1323 | |
3373efd8 | 1324 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1325 | |
1326 | /* init result_tf such that it indicates normal completion */ | |
1327 | qc->result_tf.command = ATA_DRDY; | |
1328 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1329 | } |
1330 | ||
057ace5e | 1331 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1332 | { |
1333 | return ata_id_wcache_enabled(dev->id) || | |
1334 | ata_id_has_flush(dev->id) || | |
1335 | ata_id_has_flush_ext(dev->id); | |
1336 | } | |
1337 | ||
a7dac447 JG |
1338 | static inline unsigned int ac_err_mask(u8 status) |
1339 | { | |
3655d1d3 | 1340 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1341 | return AC_ERR_HSM; |
a7dac447 JG |
1342 | if (status & (ATA_ERR | ATA_DF)) |
1343 | return AC_ERR_DEV; | |
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | static inline unsigned int __ac_err_mask(u8 status) | |
1348 | { | |
1349 | unsigned int mask = ac_err_mask(status); | |
1350 | if (mask == 0) | |
1351 | return AC_ERR_OTHER; | |
1352 | return mask; | |
1353 | } | |
1354 | ||
6037d6bb JG |
1355 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
1356 | { | |
1357 | ap->pad_dma = 0; | |
f0d36efd TH |
1358 | ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
1359 | &ap->pad_dma, GFP_KERNEL); | |
6037d6bb JG |
1360 | return (ap->pad == NULL) ? -ENOMEM : 0; |
1361 | } | |
1362 | ||
1363 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) | |
1364 | { | |
f0d36efd | 1365 | dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
6037d6bb JG |
1366 | } |
1367 | ||
35bb94b1 JG |
1368 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1369 | { | |
4911487a | 1370 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1371 | } |
1372 | ||
1da177e4 | 1373 | #endif /* __LINUX_LIBATA_H__ */ |