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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> |
c0c362b6 | 40 | #include <linux/sched.h> |
1da177e4 | 41 | |
a6d967a4 JG |
42 | /* |
43 | * Define if arch has non-standard setup. This is a _PCI_ standard | |
44 | * not a legacy or ISA standard. | |
45 | */ | |
46 | #ifdef CONFIG_ATA_NONSTANDARD | |
2ec7df04 | 47 | #include <asm/libata-portmap.h> |
a6d967a4 JG |
48 | #else |
49 | #include <asm-generic/libata-portmap.h> | |
50 | #endif | |
2ec7df04 | 51 | |
1da177e4 | 52 | /* |
bfd60579 RD |
53 | * compile-time options: to be removed as soon as all the drivers are |
54 | * converted to the new debugging mechanism | |
1da177e4 LT |
55 | */ |
56 | #undef ATA_DEBUG /* debugging output */ | |
57 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
58 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
59 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
60 | |
61 | ||
62 | /* note: prints function name for you */ | |
63 | #ifdef ATA_DEBUG | |
1f938d06 | 64 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 | 65 | #ifdef ATA_VERBOSE_DEBUG |
1f938d06 | 66 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 LT |
67 | #else |
68 | #define VPRINTK(fmt, args...) | |
69 | #endif /* ATA_VERBOSE_DEBUG */ | |
70 | #else | |
71 | #define DPRINTK(fmt, args...) | |
72 | #define VPRINTK(fmt, args...) | |
73 | #endif /* ATA_DEBUG */ | |
74 | ||
1f938d06 | 75 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
2c13b7ce | 76 | |
06296a1e JP |
77 | #define ata_print_version_once(dev, version) \ |
78 | ({ \ | |
79 | static bool __print_once; \ | |
80 | \ | |
81 | if (!__print_once) { \ | |
82 | __print_once = true; \ | |
83 | ata_print_version(dev, version); \ | |
84 | } \ | |
85 | }) | |
86 | ||
bfd60579 RD |
87 | /* NEW: debug levels */ |
88 | #define HAVE_LIBATA_MSG 1 | |
89 | ||
90 | enum { | |
91 | ATA_MSG_DRV = 0x0001, | |
92 | ATA_MSG_INFO = 0x0002, | |
93 | ATA_MSG_PROBE = 0x0004, | |
94 | ATA_MSG_WARN = 0x0008, | |
95 | ATA_MSG_MALLOC = 0x0010, | |
96 | ATA_MSG_CTL = 0x0020, | |
97 | ATA_MSG_INTR = 0x0040, | |
98 | ATA_MSG_ERR = 0x0080, | |
99 | }; | |
100 | ||
101 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
102 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
103 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
104 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
105 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
106 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
107 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
108 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
109 | ||
110 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
111 | { | |
112 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
113 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
114 | if (!dval) | |
115 | return 0; | |
116 | return (1 << dval) - 1; | |
117 | } | |
118 | ||
1da177e4 LT |
119 | /* defines only for the constants which don't work well as enums */ |
120 | #define ATA_TAG_POISON 0xfafbfcfdU | |
121 | ||
1da177e4 LT |
122 | enum { |
123 | /* various global constants */ | |
124 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 125 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 | 126 | ATA_DEF_QUEUE = 1, |
2ab7db1f | 127 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
a6e6ce8e | 128 | ATA_MAX_QUEUE = 32, |
2ab7db1f | 129 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
341c2c95 | 130 | ATA_SHORT_PAUSE = 16, |
1da177e4 | 131 | |
140b5e59 TH |
132 | ATAPI_MAX_DRAIN = 16 << 10, |
133 | ||
b558eddd TH |
134 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
135 | ||
1da177e4 | 136 | ATA_SHT_EMULATED = 1, |
1da177e4 | 137 | ATA_SHT_THIS_ID = -1, |
cf482935 | 138 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 | 139 | |
dc34e7e1 SS |
140 | /* struct ata_taskfile flags */ |
141 | ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ | |
142 | ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ | |
143 | ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ | |
144 | ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ | |
145 | ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ | |
146 | ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ | |
147 | ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ | |
148 | ||
149 | /* protocol flags */ | |
150 | ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ | |
151 | ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ | |
152 | ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, | |
153 | ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ | |
154 | ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ | |
155 | ||
1da177e4 | 156 | /* struct ata_device stuff */ |
949b38af TH |
157 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
158 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 159 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 160 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 161 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
162 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
163 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 164 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
91163006 | 165 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
2557164e | 166 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 167 | |
2557164e KCA |
168 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
169 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
054a5fba | 170 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
00115e0f | 171 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
45fabbb7 | 172 | ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
445d211b | 173 | ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ |
ed36911c | 174 | ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ |
f20ded38 | 175 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
1da177e4 | 176 | |
f20ded38 TH |
177 | ATA_DFLAG_DETACH = (1 << 24), |
178 | ATA_DFLAG_DETACHED = (1 << 25), | |
abdda733 | 179 | |
b1354cbb | 180 | ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ |
65fe1f0f | 181 | ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ |
0d0cdb02 | 182 | ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ |
b1354cbb | 183 | |
1da177e4 LT |
184 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
185 | ATA_DEV_ATA = 1, /* ATA device */ | |
186 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
187 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
188 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
189 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
190 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
191 | ATA_DEV_SEMB = 7, /* SEMB */ | |
192 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
9162c657 HR |
193 | ATA_DEV_ZAC = 9, /* ZAC device */ |
194 | ATA_DEV_NONE = 10, /* no device */ | |
1da177e4 | 195 | |
0c88758b | 196 | /* struct ata_link flags */ |
05944bdf | 197 | ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
ae791c05 TH |
198 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
199 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
200 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
201 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 202 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 203 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
18f7ba4c | 204 | ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
6b7ae954 | 205 | ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ |
ca6d43b0 | 206 | ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ |
09c5b480 | 207 | ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ |
e39b2bb3 | 208 | ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ |
0c88758b | 209 | |
1da177e4 | 210 | /* struct ata_port flags */ |
949b38af | 211 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 212 | /* (doesn't imply presence) */ |
949b38af | 213 | ATA_FLAG_SATA = (1 << 1), |
ea013a9b | 214 | ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ |
949b38af TH |
215 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
216 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
217 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
218 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
219 | * doesn't handle PIO interrupts */ | |
220 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
2a6e58d2 RW |
221 | ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ |
222 | ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ | |
7395acb2 | 223 | ATA_FLAG_DEBUGMSG = (1 << 13), |
388539f3 | 224 | ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ |
b2a8bbe6 | 225 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 226 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 227 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 228 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 229 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
40fb59e7 | 230 | ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ |
18f7ba4c KCA |
231 | ATA_FLAG_EM = (1 << 21), /* driver supports enclosure |
232 | * management */ | |
233 | ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity | |
234 | * led */ | |
ae01b249 | 235 | ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ |
a1480a16 | 236 | ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ |
949b38af | 237 | |
b51e9e5d | 238 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
9ec957f2 | 239 | |
e3cf95dd | 240 | |
b51e9e5d TH |
241 | /* struct ata_port pflags */ |
242 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
243 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
244 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
245 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
246 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
b51e9e5d | 247 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
f4d6d004 | 248 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 249 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
ece180d1 TH |
250 | ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
251 | ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ | |
949b38af | 252 | |
b51e9e5d | 253 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 254 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
c05e6ff0 | 255 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
949b38af | 256 | |
e3cf95dd AC |
257 | ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ |
258 | ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ | |
8a3e33cf | 259 | ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ |
e3cf95dd | 260 | |
949b38af TH |
261 | /* struct ata_queued_cmd flags */ |
262 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
001102d7 | 263 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
27197367 | 264 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 265 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 266 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e027bd36 | 267 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
03faab78 | 268 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
e61e0672 | 269 | |
9ec957f2 TH |
270 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
271 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
272 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 273 | |
4e5ec5db | 274 | /* host set flags */ |
cca3974e | 275 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 276 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
886ad09f | 277 | ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
db63a4c8 | 278 | ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ |
9bec2e38 | 279 | |
b8b275ef TH |
280 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
281 | ||
1da177e4 | 282 | /* various lengths of time */ |
341c2c95 TH |
283 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
284 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ | |
341c2c95 | 285 | ATA_TMOUT_INTERNAL_QUICK = 5000, |
45fabbb7 | 286 | ATA_TMOUT_MAX_PARK = 30000, |
1da177e4 | 287 | |
b48d58f5 TH |
288 | /* |
289 | * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s | |
290 | * is too much without parallel probing. Use 2s if parallel | |
291 | * probing is available, 800ms otherwise. | |
88ff6eaf | 292 | */ |
b48d58f5 TH |
293 | ATA_TMOUT_FF_WAIT_LONG = 2000, |
294 | ATA_TMOUT_FF_WAIT = 800, | |
88ff6eaf | 295 | |
705e76be TH |
296 | /* Spec mandates to wait for ">= 2ms" before checking status |
297 | * after reset. We wait 150ms, because that was the magic | |
298 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for | |
299 | * the period of time between when the ATA command register is | |
300 | * written, and then status is checked. Because waiting for | |
301 | * "a while" before checking status is fine, post SRST, we | |
302 | * perform this magic delay here as well. | |
303 | * | |
304 | * Old drivers/ide uses the 2mS rule and then waits for ready. | |
305 | */ | |
341c2c95 | 306 | ATA_WAIT_AFTER_RESET = 150, |
705e76be | 307 | |
9dadd45b TH |
308 | /* If PMP is supported, we have to do follow-up SRST. As some |
309 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are | |
310 | * advised to wait only for the following duration before | |
311 | * doing SRST. | |
312 | */ | |
e7d3ef13 | 313 | ATA_TMOUT_PMP_SRST_WAIT = 5000, |
9dadd45b | 314 | |
09c5b480 GM |
315 | /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might |
316 | * be a spurious PHY event, so ignore the first PHY event that | |
317 | * occurs within 10s after the policy change. | |
318 | */ | |
319 | ATA_TMOUT_SPURIOUS_PHY = 10000, | |
320 | ||
1da177e4 LT |
321 | /* ATA bus states */ |
322 | BUS_UNKNOWN = 0, | |
323 | BUS_DMA = 1, | |
324 | BUS_IDLE = 2, | |
325 | BUS_NOINTR = 3, | |
326 | BUS_NODATA = 4, | |
327 | BUS_TIMER = 5, | |
328 | BUS_PIO = 6, | |
329 | BUS_EDD = 7, | |
330 | BUS_IDENTIFY = 8, | |
331 | BUS_PACKET = 9, | |
332 | ||
333 | /* SATA port states */ | |
334 | PORT_UNKNOWN = 0, | |
335 | PORT_ENABLED = 1, | |
336 | PORT_DISABLED = 2, | |
337 | ||
338 | /* encoding various smaller bitmaps into a single | |
7dc951ae | 339 | * unsigned long bitmap |
1da177e4 | 340 | */ |
70cd071e TH |
341 | ATA_NR_PIO_MODES = 7, |
342 | ATA_NR_MWDMA_MODES = 5, | |
343 | ATA_NR_UDMA_MODES = 8, | |
1da7b0d0 TH |
344 | |
345 | ATA_SHIFT_PIO = 0, | |
70cd071e TH |
346 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
347 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, | |
348 | ||
cedc9a47 JG |
349 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
350 | ATA_DMA_PAD_SZ = 4, | |
949b38af | 351 | |
0c247c55 TH |
352 | /* ering size */ |
353 | ATA_ERING_SIZE = 32, | |
354 | ||
31cc23b3 TH |
355 | /* return values for ->qc_defer */ |
356 | ATA_DEFER_LINK = 1, | |
357 | ATA_DEFER_PORT = 2, | |
358 | ||
f3e81b19 TH |
359 | /* desc_len for ata_eh_info and context */ |
360 | ATA_EH_DESC_LEN = 80, | |
361 | ||
9be1e979 TH |
362 | /* reset / recovery action types */ |
363 | ATA_EH_REVALIDATE = (1 << 0), | |
cf480626 TH |
364 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
365 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ | |
366 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
f9df58cb | 367 | ATA_EH_ENABLE_LINK = (1 << 3), |
45fabbb7 | 368 | ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
9be1e979 | 369 | |
45fabbb7 | 370 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
b5b3fa38 | 371 | ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
6b7ae954 | 372 | ATA_EH_ENABLE_LINK, |
9be1e979 | 373 | |
f3e81b19 | 374 | /* ata_eh_info->flags */ |
abdda733 | 375 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
1cdaf534 TH |
376 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
377 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
e2f3d75f | 378 | ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ |
abdda733 | 379 | |
0d64a233 TH |
380 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
381 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
382 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
383 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
89692c03 | 384 | ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ |
f3e81b19 | 385 | |
0d64a233 | 386 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d | 387 | |
848e4c68 TH |
388 | /* mask of flags to transfer *to* the slave link */ |
389 | ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, | |
390 | ||
a1e10f7e TH |
391 | /* max tries if error condition is still set after ->error_handler */ |
392 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 393 | |
5040ab67 TH |
394 | /* sometimes resuming a link requires several retries */ |
395 | ATA_LINK_RESUME_TRIES = 5, | |
396 | ||
14d2bac1 TH |
397 | /* how hard are we gonna try to probe/recover devices */ |
398 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 399 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
400 | ATA_EH_PMP_TRIES = 5, |
401 | ATA_EH_PMP_LINK_TRIES = 3, | |
402 | ||
bf1bff6f | 403 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
f5914a46 | 404 | |
87fbc5a0 TH |
405 | /* This should match the actual table size of |
406 | * ata_eh_cmd_timeout_table in libata-eh.c. | |
407 | */ | |
6013efd8 | 408 | ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, |
87fbc5a0 | 409 | |
93590859 | 410 | /* Horkage types. May be set by libata or controller on drives |
25985edc | 411 | (some horkage may be drive/controller pair dependent */ |
93590859 AC |
412 | |
413 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
414 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
415 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 416 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 417 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
50af2fa1 | 418 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
93328e11 | 419 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
6bbfd53d | 420 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
2d3b8eea | 421 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
9ce8e307 | 422 | ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
6a87e42e TH |
423 | ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
424 | not multiple of 16 bytes */ | |
877d0310 | 425 | ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ |
9062712f | 426 | ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ |
d0cb43b3 | 427 | ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ |
388539f3 | 428 | ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ |
43c9c591 | 429 | ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ |
a32450e1 | 430 | ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ |
966fbe19 | 431 | ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ |
f78dea06 | 432 | ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ |
ecd75ad5 TH |
433 | ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ |
434 | ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ | |
e61f7d1c | 435 | ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ |
5d3abf8f | 436 | ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */ |
71d126fd | 437 | ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ |
af34d637 | 438 | ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ |
b3a70601 | 439 | |
2dcb407e | 440 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
441 | renumber */ |
442 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
443 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
444 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
ceb0c642 TH |
445 | |
446 | /* ATAPI command types */ | |
447 | ATAPI_READ = 0, /* READs */ | |
448 | ATAPI_WRITE = 1, /* WRITEs */ | |
449 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ | |
e52dcc48 TH |
450 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
451 | ATAPI_MISC = 4, /* the rest */ | |
624d5c51 TH |
452 | |
453 | /* Timing constants */ | |
454 | ATA_TIMING_SETUP = (1 << 0), | |
455 | ATA_TIMING_ACT8B = (1 << 1), | |
456 | ATA_TIMING_REC8B = (1 << 2), | |
457 | ATA_TIMING_CYC8B = (1 << 3), | |
458 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
459 | ATA_TIMING_CYC8B, | |
460 | ATA_TIMING_ACTIVE = (1 << 4), | |
461 | ATA_TIMING_RECOVER = (1 << 5), | |
3ada9c12 DD |
462 | ATA_TIMING_DMACK_HOLD = (1 << 6), |
463 | ATA_TIMING_CYCLE = (1 << 7), | |
464 | ATA_TIMING_UDMA = (1 << 8), | |
624d5c51 TH |
465 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
466 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
467 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
3ada9c12 DD |
468 | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
469 | ATA_TIMING_UDMA, | |
f1bce7f8 TH |
470 | |
471 | /* ACPI constants */ | |
472 | ATA_ACPI_FILTER_SETXFER = 1 << 0, | |
473 | ATA_ACPI_FILTER_LOCK = 1 << 1, | |
474 | ATA_ACPI_FILTER_DIPM = 1 << 2, | |
fa5b561c TH |
475 | ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ |
476 | ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ | |
f1bce7f8 TH |
477 | |
478 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | | |
479 | ATA_ACPI_FILTER_LOCK | | |
480 | ATA_ACPI_FILTER_DIPM, | |
1da177e4 LT |
481 | }; |
482 | ||
7dc951ae TH |
483 | enum ata_xfer_mask { |
484 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) | |
485 | << ATA_SHIFT_PIO, | |
486 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) | |
487 | << ATA_SHIFT_MWDMA, | |
488 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) | |
489 | << ATA_SHIFT_UDMA, | |
490 | }; | |
491 | ||
14be71f4 | 492 | enum hsm_task_states { |
c56b14d2 | 493 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
494 | HSM_ST_FIRST, /* (waiting the device to) |
495 | write CDB or first data block */ | |
c56b14d2 AL |
496 | HSM_ST, /* (waiting the device to) transfer data */ |
497 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 498 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
499 | }; |
500 | ||
a7dac447 | 501 | enum ata_completion_errors { |
11a56d24 TH |
502 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
503 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
504 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
505 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
506 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
507 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
508 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
509 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
510 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 511 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 512 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
513 | }; |
514 | ||
c93b263e TH |
515 | /* |
516 | * Link power management policy: If you alter this, you also need to | |
517 | * alter libata-scsi.c (for the ascii descriptions) | |
518 | */ | |
519 | enum ata_lpm_policy { | |
520 | ATA_LPM_UNKNOWN, | |
521 | ATA_LPM_MAX_POWER, | |
522 | ATA_LPM_MED_POWER, | |
523 | ATA_LPM_MIN_POWER, | |
524 | }; | |
525 | ||
6b7ae954 TH |
526 | enum ata_lpm_hints { |
527 | ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ | |
528 | ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ | |
fb329633 | 529 | ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ |
6b7ae954 TH |
530 | }; |
531 | ||
1da177e4 LT |
532 | /* forward declarations */ |
533 | struct scsi_device; | |
534 | struct ata_port_operations; | |
535 | struct ata_port; | |
cc0680a5 | 536 | struct ata_link; |
1da177e4 LT |
537 | struct ata_queued_cmd; |
538 | ||
539 | /* typedefs */ | |
77853bf2 | 540 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
541 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
542 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 543 | unsigned long deadline); |
cc0680a5 | 544 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 545 | |
ee959b00 | 546 | extern struct device_attribute dev_attr_link_power_management_policy; |
45fabbb7 | 547 | extern struct device_attribute dev_attr_unload_heads; |
18f7ba4c KCA |
548 | extern struct device_attribute dev_attr_em_message_type; |
549 | extern struct device_attribute dev_attr_em_message; | |
550 | extern struct device_attribute dev_attr_sw_activity; | |
551 | ||
552 | enum sw_activity { | |
553 | OFF, | |
554 | BLINK_ON, | |
555 | BLINK_OFF, | |
556 | }; | |
ca77329f | 557 | |
dc34e7e1 SS |
558 | struct ata_taskfile { |
559 | unsigned long flags; /* ATA_TFLAG_xxx */ | |
560 | u8 protocol; /* ATA_PROT_xxx */ | |
561 | ||
562 | u8 ctl; /* control reg */ | |
563 | ||
564 | u8 hob_feature; /* additional data */ | |
565 | u8 hob_nsect; /* to support LBA48 */ | |
566 | u8 hob_lbal; | |
567 | u8 hob_lbam; | |
568 | u8 hob_lbah; | |
569 | ||
570 | u8 feature; | |
571 | u8 nsect; | |
572 | u8 lbal; | |
573 | u8 lbam; | |
574 | u8 lbah; | |
575 | ||
576 | u8 device; | |
577 | ||
578 | u8 command; /* IO operation */ | |
8be5ad9a MC |
579 | |
580 | u32 auxiliary; /* auxiliary field */ | |
581 | /* from SATA 3.1 and */ | |
582 | /* ATA-8 ACS-3 */ | |
dc34e7e1 SS |
583 | }; |
584 | ||
127102ae | 585 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 586 | struct ata_ioports { |
0d5ff566 TH |
587 | void __iomem *cmd_addr; |
588 | void __iomem *data_addr; | |
589 | void __iomem *error_addr; | |
590 | void __iomem *feature_addr; | |
591 | void __iomem *nsect_addr; | |
592 | void __iomem *lbal_addr; | |
593 | void __iomem *lbam_addr; | |
594 | void __iomem *lbah_addr; | |
595 | void __iomem *device_addr; | |
596 | void __iomem *status_addr; | |
597 | void __iomem *command_addr; | |
598 | void __iomem *altstatus_addr; | |
599 | void __iomem *ctl_addr; | |
9a7780c9 | 600 | #ifdef CONFIG_ATA_BMDMA |
0d5ff566 | 601 | void __iomem *bmdma_addr; |
9a7780c9 | 602 | #endif /* CONFIG_ATA_BMDMA */ |
0d5ff566 | 603 | void __iomem *scr_addr; |
1da177e4 | 604 | }; |
127102ae | 605 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 | 606 | |
cca3974e | 607 | struct ata_host { |
1da177e4 LT |
608 | spinlock_t lock; |
609 | struct device *dev; | |
0d5ff566 | 610 | void __iomem * const *iomap; |
1da177e4 | 611 | unsigned int n_ports; |
1a112d10 | 612 | unsigned int n_tags; /* nr of NCQ tags */ |
1da177e4 | 613 | void *private_data; |
029cfd6b | 614 | struct ata_port_operations *ops; |
5444a6f4 | 615 | unsigned long flags; |
c0c362b6 TH |
616 | |
617 | struct mutex eh_mutex; | |
618 | struct task_struct *eh_owner; | |
619 | ||
032af1ce | 620 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 621 | struct ata_port *ports[0]; |
1da177e4 LT |
622 | }; |
623 | ||
624 | struct ata_queued_cmd { | |
625 | struct ata_port *ap; | |
626 | struct ata_device *dev; | |
627 | ||
628 | struct scsi_cmnd *scsicmd; | |
629 | void (*scsidone)(struct scsi_cmnd *); | |
630 | ||
631 | struct ata_taskfile tf; | |
632 | u8 cdb[ATAPI_CDB_LEN]; | |
633 | ||
634 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
635 | unsigned int tag; | |
636 | unsigned int n_elem; | |
5825627c | 637 | unsigned int orig_n_elem; |
1da177e4 LT |
638 | |
639 | int dma_dir; | |
640 | ||
5a5dbd18 | 641 | unsigned int sect_size; |
cedc9a47 | 642 | |
1da177e4 | 643 | unsigned int nbytes; |
aacda375 | 644 | unsigned int extrabytes; |
1da177e4 LT |
645 | unsigned int curbytes; |
646 | ||
1da177e4 | 647 | struct scatterlist sgent; |
1da177e4 | 648 | |
ff2aeb1e | 649 | struct scatterlist *sg; |
1da177e4 | 650 | |
b34e9042 RK |
651 | struct scatterlist *cursg; |
652 | unsigned int cursg_ofs; | |
653 | ||
a22e2eb0 | 654 | unsigned int err_mask; |
e61e0672 | 655 | struct ata_taskfile result_tf; |
1da177e4 LT |
656 | ata_qc_cb_t complete_fn; |
657 | ||
1da177e4 | 658 | void *private_data; |
1c50dc83 | 659 | void *lldd_task; |
1da177e4 LT |
660 | }; |
661 | ||
cca3974e | 662 | struct ata_port_stats { |
1da177e4 LT |
663 | unsigned long unhandled_irq; |
664 | unsigned long idle_irq; | |
665 | unsigned long rw_reqbuf; | |
666 | }; | |
667 | ||
0c247c55 | 668 | struct ata_ering_entry { |
3884f7b0 | 669 | unsigned int eflags; |
0c247c55 TH |
670 | unsigned int err_mask; |
671 | u64 timestamp; | |
672 | }; | |
673 | ||
674 | struct ata_ering { | |
675 | int cursor; | |
676 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
677 | }; | |
678 | ||
1da177e4 | 679 | struct ata_device { |
9af5c9c9 | 680 | struct ata_link *link; |
72fa4b74 | 681 | unsigned int devno; /* 0 or 1 */ |
75683fe7 | 682 | unsigned int horkage; /* List of broken features */ |
6866e7bc | 683 | unsigned long flags; /* ATA_DFLAG_xxx */ |
3edebac4 | 684 | struct scsi_device *sdev; /* attached SCSI device */ |
95514fd8 | 685 | void *private_data; |
fafbae87 | 686 | #ifdef CONFIG_ATA_ACPI |
398e0782 | 687 | union acpi_object *gtf_cache; |
110f66d2 | 688 | unsigned int gtf_filter; |
afe75951 AL |
689 | #endif |
690 | #ifdef CONFIG_SATA_ZPODD | |
691 | void *zpodd; | |
fafbae87 | 692 | #endif |
d9027470 | 693 | struct device tdev; |
99cf610a | 694 | /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ |
72fa4b74 | 695 | u64 n_sectors; /* size of device, if ATA */ |
5920dadf | 696 | u64 n_native_sectors; /* native size, if ATA */ |
1da177e4 | 697 | unsigned int class; /* ATA_DEV_xxx */ |
45fabbb7 | 698 | unsigned long unpark_deadline; |
e0a71752 | 699 | |
1da177e4 LT |
700 | u8 pio_mode; |
701 | u8 dma_mode; | |
702 | u8 xfer_mode; | |
703 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
704 | ||
8cbd6df1 AL |
705 | unsigned int multi_count; /* sectors count for |
706 | READ/WRITE MULTIPLE */ | |
b00eec1d | 707 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 708 | unsigned int cdb_len; |
8bf62ece | 709 | |
acf356b1 | 710 | /* per-dev xfer mask */ |
7dc951ae TH |
711 | unsigned long pio_mask; |
712 | unsigned long mwdma_mask; | |
713 | unsigned long udma_mask; | |
acf356b1 | 714 | |
8bf62ece AL |
715 | /* for CHS addressing */ |
716 | u16 cylinders; /* Number of cylinders */ | |
717 | u16 heads; /* Number of heads */ | |
718 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 | 719 | |
f7e98930 JG |
720 | union { |
721 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
722 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
4ee34ea3 | 723 | } ____cacheline_aligned; |
99cf610a | 724 | |
803739d2 SH |
725 | /* DEVSLP Timing Variables from Identify Device Data Log */ |
726 | u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; | |
65fe1f0f | 727 | |
ed36911c MC |
728 | /* NCQ send and receive log subcommand support */ |
729 | u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; | |
730 | ||
99cf610a TH |
731 | /* error history */ |
732 | int spdn_cnt; | |
733 | /* ering is CLEAR_END, read comment above CLEAR_END */ | |
734 | struct ata_ering ering; | |
1da177e4 LT |
735 | }; |
736 | ||
99cf610a TH |
737 | /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are |
738 | * cleared to zero on ata_dev_init(). | |
72fa4b74 | 739 | */ |
99cf610a TH |
740 | #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) |
741 | #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) | |
72fa4b74 | 742 | |
f3e81b19 TH |
743 | struct ata_eh_info { |
744 | struct ata_device *dev; /* offending device */ | |
745 | u32 serror; /* SError from LLDD */ | |
746 | unsigned int err_mask; /* port-wide err_mask */ | |
747 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 748 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 749 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 750 | |
abdda733 TH |
751 | unsigned int probe_mask; |
752 | ||
f3e81b19 TH |
753 | char desc[ATA_EH_DESC_LEN]; |
754 | int desc_len; | |
755 | }; | |
756 | ||
757 | struct ata_eh_context { | |
758 | struct ata_eh_info i; | |
759 | int tries[ATA_MAX_DEVICES]; | |
87fbc5a0 TH |
760 | int cmd_timeout_idx[ATA_MAX_DEVICES] |
761 | [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; | |
abdda733 TH |
762 | unsigned int classes[ATA_MAX_DEVICES]; |
763 | unsigned int did_probe_mask; | |
45fabbb7 | 764 | unsigned int unloaded_mask; |
00115e0f TH |
765 | unsigned int saved_ncq_enabled; |
766 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; | |
0a2c0f56 TH |
767 | /* timestamp for the last reset attempt or success */ |
768 | unsigned long last_reset; | |
f3e81b19 TH |
769 | }; |
770 | ||
64578a3d TH |
771 | struct ata_acpi_drive |
772 | { | |
773 | u32 pio; | |
774 | u32 dma; | |
775 | } __packed; | |
776 | ||
777 | struct ata_acpi_gtm { | |
778 | struct ata_acpi_drive drive[2]; | |
779 | u32 flags; | |
780 | } __packed; | |
781 | ||
9af5c9c9 TH |
782 | struct ata_link { |
783 | struct ata_port *ap; | |
8989805d | 784 | int pmp; /* port multiplier port # */ |
9af5c9c9 | 785 | |
d9027470 | 786 | struct device tdev; |
9af5c9c9 TH |
787 | unsigned int active_tag; /* active tag on this link */ |
788 | u32 sactive; /* active NCQ commands */ | |
789 | ||
0c88758b TH |
790 | unsigned int flags; /* ATA_LFLAG_xxx */ |
791 | ||
d127ea7b | 792 | u32 saved_scontrol; /* SControl on probe */ |
9af5c9c9 TH |
793 | unsigned int hw_sata_spd_limit; |
794 | unsigned int sata_spd_limit; | |
795 | unsigned int sata_spd; /* current SATA PHY speed */ | |
6b7ae954 | 796 | enum ata_lpm_policy lpm_policy; |
9af5c9c9 TH |
797 | |
798 | /* record runtime error info, protected by host_set lock */ | |
799 | struct ata_eh_info eh_info; | |
800 | /* EH context */ | |
801 | struct ata_eh_context eh_context; | |
802 | ||
803 | struct ata_device device[ATA_MAX_DEVICES]; | |
09c5b480 GM |
804 | |
805 | unsigned long last_lpm_change; /* when last LPM change happened */ | |
9af5c9c9 | 806 | }; |
d9027470 GG |
807 | #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) |
808 | #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) | |
9af5c9c9 | 809 | |
1da177e4 | 810 | struct ata_port { |
cca3974e | 811 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
029cfd6b | 812 | struct ata_port_operations *ops; |
ba6a1308 | 813 | spinlock_t *lock; |
e3cf95dd AC |
814 | /* Flags owned by the EH context. Only EH should touch these once the |
815 | port is active */ | |
1da177e4 | 816 | unsigned long flags; /* ATA_FLAG_xxx */ |
e3cf95dd | 817 | /* Flags that change dynamically, protected by ap->lock */ |
b51e9e5d | 818 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e | 819 | unsigned int print_id; /* user visible unique port ID */ |
e628dc99 | 820 | unsigned int local_port_no; /* host local port num */ |
44877b4e | 821 | unsigned int port_no; /* 0 based port no. inside the host */ |
1da177e4 | 822 | |
127102ae | 823 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 824 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
1da177e4 LT |
825 | u8 ctl; /* cache of ATA control register */ |
826 | u8 last_ctl; /* Cache last written value */ | |
ea3c6450 | 827 | struct ata_link* sff_pio_task_link; /* link currently used */ |
c429137a | 828 | struct delayed_work sff_pio_task; |
9a7780c9 | 829 | #ifdef CONFIG_ATA_BMDMA |
f60d7011 TH |
830 | struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ |
831 | dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ | |
9a7780c9 | 832 | #endif /* CONFIG_ATA_BMDMA */ |
5fe7454a TH |
833 | #endif /* CONFIG_ATA_SFF */ |
834 | ||
1da177e4 LT |
835 | unsigned int pio_mask; |
836 | unsigned int mwdma_mask; | |
837 | unsigned int udma_mask; | |
838 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
839 | |
840 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
12cb5ce1 | 841 | unsigned long sas_tag_allocated; /* for sas tag allocation only */ |
dedaf2b0 | 842 | unsigned int qc_active; |
da917d69 | 843 | int nr_active_links; /* #links with active qcs */ |
12cb5ce1 | 844 | unsigned int sas_last_tag; /* track next tag hw expects */ |
dedaf2b0 | 845 | |
b1c72916 TH |
846 | struct ata_link link; /* host default link */ |
847 | struct ata_link *slave_link; /* see ata_slave_link_init() */ | |
1da177e4 | 848 | |
8989805d TH |
849 | int nr_pmp_links; /* nr of available PMP links */ |
850 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 851 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 852 | |
cca3974e JG |
853 | struct ata_port_stats stats; |
854 | struct ata_host *host; | |
2f1f610b | 855 | struct device *dev; |
d9027470 | 856 | struct device tdev; |
1da177e4 | 857 | |
ad72cf98 | 858 | struct mutex scsi_scan_mutex; |
52bad64d | 859 | struct delayed_work hotplug_task; |
3b01b8af | 860 | struct work_struct scsi_rescan_task; |
86e45b6b | 861 | |
14be71f4 | 862 | unsigned int hsm_task_state; |
1da177e4 | 863 | |
bfd60579 | 864 | u32 msg_enable; |
a72ec4ce | 865 | struct list_head eh_done_q; |
c6cf9e99 | 866 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 867 | int eh_tries; |
45fabbb7 | 868 | struct completion park_req_pending; |
bfd60579 | 869 | |
500530f6 | 870 | pm_message_t pm_mesg; |
6b7ae954 | 871 | enum ata_lpm_policy target_lpm_policy; |
500530f6 | 872 | |
5ddf24c5 TH |
873 | struct timer_list fastdrain_timer; |
874 | unsigned long fastdrain_cnt; | |
875 | ||
18f7ba4c | 876 | int em_message_type; |
1da177e4 | 877 | void *private_data; |
fe635c7e | 878 | |
fafbae87 | 879 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 | 880 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
fafbae87 | 881 | #endif |
84bda12a TH |
882 | /* owned by EH */ |
883 | u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; | |
1da177e4 LT |
884 | }; |
885 | ||
029cfd6b TH |
886 | /* The following initializer overrides a method to NULL whether one of |
887 | * its parent has the method defined or not. This is equivalent to | |
888 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant | |
889 | * expression and thus can't be used as an initializer. | |
890 | */ | |
891 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) | |
892 | ||
1da177e4 | 893 | struct ata_port_operations { |
c1bc899f TH |
894 | /* |
895 | * Command execution | |
896 | */ | |
897 | int (*qc_defer)(struct ata_queued_cmd *qc); | |
898 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); | |
899 | void (*qc_prep)(struct ata_queued_cmd *qc); | |
900 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); | |
22183bf5 | 901 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
1da177e4 | 902 | |
c1bc899f TH |
903 | /* |
904 | * Configuration and exception handling | |
905 | */ | |
906 | int (*cable_detect)(struct ata_port *ap); | |
907 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); | |
908 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); | |
909 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); | |
910 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); | |
963e4975 | 911 | unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
1da177e4 | 912 | |
c1bc899f | 913 | void (*dev_config)(struct ata_device *dev); |
1da177e4 | 914 | |
c1bc899f TH |
915 | void (*freeze)(struct ata_port *ap); |
916 | void (*thaw)(struct ata_port *ap); | |
a1efdaba TH |
917 | ata_prereset_fn_t prereset; |
918 | ata_reset_fn_t softreset; | |
919 | ata_reset_fn_t hardreset; | |
920 | ata_postreset_fn_t postreset; | |
921 | ata_prereset_fn_t pmp_prereset; | |
922 | ata_reset_fn_t pmp_softreset; | |
923 | ata_reset_fn_t pmp_hardreset; | |
924 | ata_postreset_fn_t pmp_postreset; | |
c1bc899f | 925 | void (*error_handler)(struct ata_port *ap); |
c96f1732 | 926 | void (*lost_interrupt)(struct ata_port *ap); |
c1bc899f | 927 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
e4a9c373 DW |
928 | void (*sched_eh)(struct ata_port *ap); |
929 | void (*end_eh)(struct ata_port *ap); | |
c1bc899f TH |
930 | |
931 | /* | |
932 | * Optional features | |
933 | */ | |
82ef04fb TH |
934 | int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
935 | int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); | |
c1bc899f TH |
936 | void (*pmp_attach)(struct ata_port *ap); |
937 | void (*pmp_detach)(struct ata_port *ap); | |
6b7ae954 TH |
938 | int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, |
939 | unsigned hints); | |
c1bc899f TH |
940 | |
941 | /* | |
942 | * Start, stop, suspend and resume | |
943 | */ | |
944 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); | |
945 | int (*port_resume)(struct ata_port *ap); | |
946 | int (*port_start)(struct ata_port *ap); | |
947 | void (*port_stop)(struct ata_port *ap); | |
948 | void (*host_stop)(struct ata_host *host); | |
949 | ||
127102ae | 950 | #ifdef CONFIG_ATA_SFF |
c1bc899f TH |
951 | /* |
952 | * SFF / taskfile oriented ops | |
953 | */ | |
5682ed33 | 954 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
41dec29b | 955 | void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); |
5682ed33 TH |
956 | u8 (*sff_check_status)(struct ata_port *ap); |
957 | u8 (*sff_check_altstatus)(struct ata_port *ap); | |
958 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); | |
959 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); | |
960 | void (*sff_exec_command)(struct ata_port *ap, | |
961 | const struct ata_taskfile *tf); | |
962 | unsigned int (*sff_data_xfer)(struct ata_device *dev, | |
963 | unsigned char *buf, unsigned int buflen, int rw); | |
e42a542b | 964 | void (*sff_irq_on)(struct ata_port *); |
27943620 | 965 | bool (*sff_irq_check)(struct ata_port *); |
5682ed33 | 966 | void (*sff_irq_clear)(struct ata_port *); |
8244cd05 | 967 | void (*sff_drain_fifo)(struct ata_queued_cmd *qc); |
5682ed33 | 968 | |
9a7780c9 | 969 | #ifdef CONFIG_ATA_BMDMA |
c1bc899f TH |
970 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
971 | void (*bmdma_start)(struct ata_queued_cmd *qc); | |
972 | void (*bmdma_stop)(struct ata_queued_cmd *qc); | |
973 | u8 (*bmdma_status)(struct ata_port *ap); | |
9a7780c9 | 974 | #endif /* CONFIG_ATA_BMDMA */ |
127102ae | 975 | #endif /* CONFIG_ATA_SFF */ |
c1bc899f | 976 | |
18f7ba4c KCA |
977 | ssize_t (*em_show)(struct ata_port *ap, char *buf); |
978 | ssize_t (*em_store)(struct ata_port *ap, const char *message, | |
979 | size_t size); | |
980 | ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); | |
981 | ssize_t (*sw_activity_store)(struct ata_device *dev, | |
982 | enum sw_activity val); | |
439d7a35 ML |
983 | ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, |
984 | ssize_t size); | |
985 | ||
c1bc899f TH |
986 | /* |
987 | * Obsolete | |
9ec957f2 | 988 | */ |
c1bc899f TH |
989 | void (*phy_reset)(struct ata_port *ap); |
990 | void (*eng_timeout)(struct ata_port *ap); | |
029cfd6b TH |
991 | |
992 | /* | |
993 | * ->inherits must be the last field and all the preceding | |
994 | * fields must be pointers. | |
995 | */ | |
996 | const struct ata_port_operations *inherits; | |
1da177e4 LT |
997 | }; |
998 | ||
999 | struct ata_port_info { | |
cca3974e | 1000 | unsigned long flags; |
0c88758b | 1001 | unsigned long link_flags; |
1da177e4 LT |
1002 | unsigned long pio_mask; |
1003 | unsigned long mwdma_mask; | |
1004 | unsigned long udma_mask; | |
029cfd6b | 1005 | struct ata_port_operations *port_ops; |
e99f8b5e | 1006 | void *private_data; |
1da177e4 LT |
1007 | }; |
1008 | ||
452503f9 AC |
1009 | struct ata_timing { |
1010 | unsigned short mode; /* ATA mode */ | |
1011 | unsigned short setup; /* t1 */ | |
1012 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
1013 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
1014 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
1015 | unsigned short active; /* t2 or tD */ | |
1016 | unsigned short recover; /* t2i or tK */ | |
3ada9c12 | 1017 | unsigned short dmack_hold; /* tj */ |
452503f9 AC |
1018 | unsigned short cycle; /* t0 */ |
1019 | unsigned short udma; /* t2CYCTYP/2 */ | |
1020 | }; | |
1021 | ||
624d5c51 TH |
1022 | /* |
1023 | * Core layer - drivers/ata/libata-core.c | |
1024 | */ | |
e9c83914 TH |
1025 | extern const unsigned long sata_deb_timing_normal[]; |
1026 | extern const unsigned long sata_deb_timing_hotplug[]; | |
1027 | extern const unsigned long sata_deb_timing_long[]; | |
1028 | ||
029cfd6b | 1029 | extern struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 1030 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 1031 | |
dc34e7e1 SS |
1032 | /* |
1033 | * protocol tests | |
1034 | */ | |
1035 | static inline unsigned int ata_prot_flags(u8 prot) | |
1036 | { | |
1037 | switch (prot) { | |
1038 | case ATA_PROT_NODATA: | |
1039 | return 0; | |
1040 | case ATA_PROT_PIO: | |
1041 | return ATA_PROT_FLAG_PIO; | |
1042 | case ATA_PROT_DMA: | |
1043 | return ATA_PROT_FLAG_DMA; | |
1044 | case ATA_PROT_NCQ: | |
1045 | return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; | |
1046 | case ATAPI_PROT_NODATA: | |
1047 | return ATA_PROT_FLAG_ATAPI; | |
1048 | case ATAPI_PROT_PIO: | |
1049 | return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; | |
1050 | case ATAPI_PROT_DMA: | |
1051 | return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; | |
1052 | } | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | static inline int ata_is_atapi(u8 prot) | |
1057 | { | |
1058 | return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; | |
1059 | } | |
1060 | ||
1061 | static inline int ata_is_nodata(u8 prot) | |
1062 | { | |
1063 | return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); | |
1064 | } | |
1065 | ||
1066 | static inline int ata_is_pio(u8 prot) | |
1067 | { | |
1068 | return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; | |
1069 | } | |
1070 | ||
1071 | static inline int ata_is_dma(u8 prot) | |
1072 | { | |
1073 | return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; | |
1074 | } | |
1075 | ||
1076 | static inline int ata_is_ncq(u8 prot) | |
1077 | { | |
1078 | return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; | |
1079 | } | |
1080 | ||
1081 | static inline int ata_is_data(u8 prot) | |
1082 | { | |
1083 | return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; | |
1084 | } | |
1085 | ||
1086 | static inline int is_multi_taskfile(struct ata_taskfile *tf) | |
1087 | { | |
1088 | return (tf->command == ATA_CMD_READ_MULTI) || | |
1089 | (tf->command == ATA_CMD_WRITE_MULTI) || | |
1090 | (tf->command == ATA_CMD_READ_MULTI_EXT) || | |
1091 | (tf->command == ATA_CMD_WRITE_MULTI_EXT) || | |
1092 | (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); | |
1093 | } | |
1094 | ||
e9c83914 TH |
1095 | static inline const unsigned long * |
1096 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
1097 | { | |
1098 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
1099 | return sata_deb_timing_hotplug; | |
1100 | else | |
1101 | return sata_deb_timing_normal; | |
1102 | } | |
d7bb4cc7 | 1103 | |
dd5b06c4 TH |
1104 | static inline int ata_port_is_dummy(struct ata_port *ap) |
1105 | { | |
1106 | return ap->ops == &ata_dummy_port_ops; | |
1107 | } | |
1108 | ||
936fd732 | 1109 | extern int sata_set_spd(struct ata_link *link); |
0aa1113d | 1110 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
aa2731ad TH |
1111 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
1112 | int (*check_ready)(struct ata_link *link)); | |
936fd732 TH |
1113 | extern int sata_link_debounce(struct ata_link *link, |
1114 | const unsigned long *params, unsigned long deadline); | |
1115 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
1116 | unsigned long deadline); | |
1152b261 TH |
1117 | extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
1118 | bool spm_wakeup); | |
cc0680a5 | 1119 | extern int sata_link_hardreset(struct ata_link *link, |
9dadd45b TH |
1120 | const unsigned long *timing, unsigned long deadline, |
1121 | bool *online, int (*check_ready)(struct ata_link *)); | |
57c9efdf TH |
1122 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
1123 | unsigned long deadline); | |
203c75b8 | 1124 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
2855568b | 1125 | |
f3187195 | 1126 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
1127 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
1128 | const struct ata_port_info * const * ppi, int n_ports); | |
b1c72916 | 1129 | extern int ata_slave_link_init(struct ata_port *ap); |
ecef7253 | 1130 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
1131 | extern int ata_host_register(struct ata_host *host, |
1132 | struct scsi_host_template *sht); | |
f5cda257 TH |
1133 | extern int ata_host_activate(struct ata_host *host, int irq, |
1134 | irq_handler_t irq_handler, unsigned long irq_flags, | |
1135 | struct scsi_host_template *sht); | |
0529c159 | 1136 | extern void ata_host_detach(struct ata_host *host); |
8d8e7d13 | 1137 | extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); |
193515d5 | 1138 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 | 1139 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
f281233d | 1140 | extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
94be9a58 JG |
1141 | extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
1142 | int cmd, void __user *arg); | |
80289167 | 1143 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 1144 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 | 1145 | struct ata_port_info *, struct Scsi_Host *); |
b2024459 DW |
1146 | extern void ata_sas_async_probe(struct ata_port *ap); |
1147 | extern int ata_sas_sync_probe(struct ata_port *ap); | |
80289167 BK |
1148 | extern int ata_sas_port_init(struct ata_port *); |
1149 | extern int ata_sas_port_start(struct ata_port *ap); | |
1150 | extern void ata_sas_port_stop(struct ata_port *ap); | |
1151 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
b27dcfb0 | 1152 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); |
936fd732 TH |
1153 | extern int sata_scr_valid(struct ata_link *link); |
1154 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
1155 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
1156 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
b5b3fa38 TH |
1157 | extern bool ata_link_online(struct ata_link *link); |
1158 | extern bool ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 1159 | #ifdef CONFIG_PM |
cca3974e JG |
1160 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
1161 | extern void ata_host_resume(struct ata_host *host); | |
bc6e7c4b DW |
1162 | extern void ata_sas_port_suspend(struct ata_port *ap); |
1163 | extern void ata_sas_port_resume(struct ata_port *ap); | |
2fcbdcb4 | 1164 | #else |
bc6e7c4b | 1165 | static inline void ata_sas_port_suspend(struct ata_port *ap) |
2fcbdcb4 | 1166 | { |
2fcbdcb4 | 1167 | } |
a5a65699 RD |
1168 | static inline void ata_sas_port_resume(struct ata_port *ap) |
1169 | { | |
1170 | } | |
6ffa01d8 | 1171 | #endif |
67846b30 | 1172 | extern int ata_ratelimit(void); |
97750ceb TH |
1173 | extern void ata_msleep(struct ata_port *ap, unsigned int msecs); |
1174 | extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, | |
1175 | u32 val, unsigned long interval, unsigned long timeout); | |
436d34b3 | 1176 | extern int atapi_cmd_type(u8 opcode); |
9977126c TH |
1177 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
1178 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 1179 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
7dc951ae TH |
1180 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
1181 | unsigned long mwdma_mask, unsigned long udma_mask); | |
1182 | extern void ata_unpack_xfermask(unsigned long xfer_mask, | |
1183 | unsigned long *pio_mask, unsigned long *mwdma_mask, | |
1184 | unsigned long *udma_mask); | |
1185 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); | |
1186 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); | |
1187 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); | |
1188 | extern const char *ata_mode_string(unsigned long xfer_mask); | |
1189 | extern unsigned long ata_id_xfermask(const u16 *id); | |
31cc23b3 | 1190 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
e46834cd | 1191 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 LT |
1192 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
1193 | unsigned int n_elem); | |
057ace5e | 1194 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 1195 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
1196 | extern void ata_id_string(const u16 *id, unsigned char *s, |
1197 | unsigned int ofs, unsigned int len); | |
1198 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
1199 | unsigned int ofs, unsigned int len); | |
963e4975 AC |
1200 | extern unsigned int ata_do_dev_read_id(struct ata_device *dev, |
1201 | struct ata_taskfile *tf, u16 *id); | |
f686bcb8 | 1202 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
79f97dad | 1203 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
b27dcfb0 | 1204 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); |
1da177e4 LT |
1205 | extern int ata_std_bios_param(struct scsi_device *sdev, |
1206 | struct block_device *bdev, | |
1207 | sector_t capacity, int geom[]); | |
d8d9129e | 1208 | extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); |
1da177e4 | 1209 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
83c47bcb | 1210 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e | 1211 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
db5ed4df | 1212 | int queue_depth); |
f6e67035 | 1213 | extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
db5ed4df | 1214 | int queue_depth); |
3373efd8 | 1215 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 1216 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
0e0b494c JB |
1217 | extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); |
1218 | extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); | |
8393b811 | 1219 | extern bool sata_lpm_ignore_phy_events(struct ata_link *link); |
1da177e4 | 1220 | |
be0d18df AC |
1221 | extern int ata_cable_40wire(struct ata_port *ap); |
1222 | extern int ata_cable_80wire(struct ata_port *ap); | |
1223 | extern int ata_cable_sata(struct ata_port *ap); | |
c88f90c3 | 1224 | extern int ata_cable_ignore(struct ata_port *ap); |
be0d18df AC |
1225 | extern int ata_cable_unknown(struct ata_port *ap); |
1226 | ||
624d5c51 | 1227 | /* Timing helpers */ |
1bc4ccff | 1228 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
6357357c | 1229 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
452503f9 AC |
1230 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
1231 | struct ata_timing *, int, int); | |
1232 | extern void ata_timing_merge(const struct ata_timing *, | |
1233 | const struct ata_timing *, struct ata_timing *, | |
1234 | unsigned int); | |
a0f79b92 | 1235 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
452503f9 | 1236 | |
624d5c51 TH |
1237 | /* PCI */ |
1238 | #ifdef CONFIG_PCI | |
1239 | struct pci_dev; | |
1240 | ||
1241 | struct pci_bits { | |
1242 | unsigned int reg; /* PCI config register to read */ | |
1243 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
1244 | unsigned long mask; | |
1245 | unsigned long val; | |
452503f9 AC |
1246 | }; |
1247 | ||
624d5c51 TH |
1248 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
1249 | extern void ata_pci_remove_one(struct pci_dev *pdev); | |
1250 | ||
1251 | #ifdef CONFIG_PM | |
1252 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1253 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
1254 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1255 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
1256 | #endif /* CONFIG_PM */ | |
1257 | #endif /* CONFIG_PCI */ | |
1258 | ||
b7db04d9 BN |
1259 | struct platform_device; |
1260 | ||
1261 | extern int ata_platform_remove_one(struct platform_device *pdev); | |
1262 | ||
624d5c51 TH |
1263 | /* |
1264 | * ACPI - drivers/ata/libata-acpi.c | |
1265 | */ | |
e1ddb4b6 | 1266 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 TH |
1267 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1268 | { | |
1269 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) | |
1270 | return &ap->__acpi_init_gtm; | |
1271 | return NULL; | |
1272 | } | |
0d02f0b2 TH |
1273 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
1274 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); | |
7c77fa4d TH |
1275 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
1276 | const struct ata_acpi_gtm *gtm); | |
021ee9a6 | 1277 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
e1ddb4b6 | 1278 | #else |
c05e6ff0 TH |
1279 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1280 | { | |
1281 | return NULL; | |
1282 | } | |
7c77fa4d TH |
1283 | |
1284 | static inline int ata_acpi_stm(const struct ata_port *ap, | |
1285 | struct ata_acpi_gtm *stm) | |
1286 | { | |
1287 | return -ENOSYS; | |
1288 | } | |
1289 | ||
1290 | static inline int ata_acpi_gtm(const struct ata_port *ap, | |
1291 | struct ata_acpi_gtm *stm) | |
1292 | { | |
1293 | return -ENOSYS; | |
1294 | } | |
1295 | ||
1296 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, | |
1297 | const struct ata_acpi_gtm *gtm) | |
1298 | { | |
1299 | return 0; | |
1300 | } | |
021ee9a6 TH |
1301 | |
1302 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, | |
1303 | const struct ata_acpi_gtm *gtm) | |
1304 | { | |
1305 | return 0; | |
1306 | } | |
e1ddb4b6 | 1307 | #endif |
1da177e4 | 1308 | |
ece1d636 | 1309 | /* |
624d5c51 | 1310 | * EH - drivers/ata/libata-eh.c |
ece1d636 | 1311 | */ |
7b70fc03 | 1312 | extern void ata_port_schedule_eh(struct ata_port *ap); |
81c757bc | 1313 | extern void ata_port_wait_eh(struct ata_port *ap); |
dbd82616 | 1314 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1315 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1316 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1317 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1318 | |
1319 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1320 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1321 | |
ece1d636 TH |
1322 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1323 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
10acf3b0 | 1324 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
ece1d636 | 1325 | |
f5914a46 TH |
1326 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1327 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1328 | ata_postreset_fn_t postreset); | |
a1efdaba | 1329 | extern void ata_std_error_handler(struct ata_port *ap); |
e4a9c373 DW |
1330 | extern void ata_std_sched_eh(struct ata_port *ap); |
1331 | extern void ata_std_end_eh(struct ata_port *ap); | |
8a745f1f | 1332 | extern int ata_link_nr_enabled(struct ata_link *link); |
022bdb07 | 1333 | |
68d1d07b TH |
1334 | /* |
1335 | * Base operations to inherit from and initializers for sht | |
1336 | * | |
1337 | * Operations | |
1338 | * | |
1339 | * base : Common to all libata drivers. | |
1340 | * sata : SATA controllers w/ native interface. | |
1341 | * pmp : SATA controllers w/ PMP support. | |
1342 | * sff : SFF ATA controllers w/o BMDMA support. | |
1343 | * bmdma : SFF ATA controllers w/ BMDMA support. | |
1344 | * | |
1345 | * sht initializers | |
1346 | * | |
1347 | * BASE : Common to all libata drivers. The user must set | |
1348 | * sg_tablesize and dma_boundary. | |
1349 | * PIO : SFF ATA controllers w/ only PIO support. | |
1350 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and | |
1351 | * dma_boundary are set to BMDMA limits. | |
1352 | * NCQ : SATA controllers supporting NCQ. The user must set | |
1353 | * sg_tablesize, dma_boundary and can_queue. | |
1354 | */ | |
1355 | extern const struct ata_port_operations ata_base_port_ops; | |
1356 | extern const struct ata_port_operations sata_port_ops; | |
45fabbb7 | 1357 | extern struct device_attribute *ata_common_sdev_attrs[]; |
68d1d07b | 1358 | |
018d5ef2 AM |
1359 | /* |
1360 | * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated | |
1361 | * by the edge drivers. Because the 'module' field of sht must be the | |
1362 | * edge driver's module reference, otherwise the driver can be unloaded | |
1363 | * even if the scsi_device is being accessed. | |
1364 | */ | |
68d1d07b TH |
1365 | #define ATA_BASE_SHT(drv_name) \ |
1366 | .module = THIS_MODULE, \ | |
1367 | .name = drv_name, \ | |
1368 | .ioctl = ata_scsi_ioctl, \ | |
1369 | .queuecommand = ata_scsi_queuecmd, \ | |
1370 | .can_queue = ATA_DEF_QUEUE, \ | |
12cb5ce1 | 1371 | .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
68d1d07b | 1372 | .this_id = ATA_SHT_THIS_ID, \ |
68d1d07b TH |
1373 | .emulated = ATA_SHT_EMULATED, \ |
1374 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ | |
1375 | .proc_name = drv_name, \ | |
1376 | .slave_configure = ata_scsi_slave_config, \ | |
1377 | .slave_destroy = ata_scsi_slave_destroy, \ | |
45fabbb7 | 1378 | .bios_param = ata_std_bios_param, \ |
d8d9129e | 1379 | .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ |
45fabbb7 | 1380 | .sdev_attrs = ata_common_sdev_attrs |
68d1d07b | 1381 | |
68d1d07b TH |
1382 | #define ATA_NCQ_SHT(drv_name) \ |
1383 | ATA_BASE_SHT(drv_name), \ | |
1384 | .change_queue_depth = ata_scsi_change_queue_depth | |
1385 | ||
071f44b1 TH |
1386 | /* |
1387 | * PMP helpers | |
1388 | */ | |
88fcd562 | 1389 | #ifdef CONFIG_SATA_PMP |
071f44b1 TH |
1390 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1391 | { | |
1392 | return ap->flags & ATA_FLAG_PMP; | |
1393 | } | |
1394 | ||
1395 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1396 | { | |
1397 | return ap->nr_pmp_links != 0; | |
1398 | } | |
1399 | ||
1400 | static inline int ata_is_host_link(const struct ata_link *link) | |
1401 | { | |
b1c72916 | 1402 | return link == &link->ap->link || link == link->ap->slave_link; |
071f44b1 | 1403 | } |
88fcd562 TH |
1404 | #else /* CONFIG_SATA_PMP */ |
1405 | static inline bool sata_pmp_supported(struct ata_port *ap) | |
1406 | { | |
1407 | return false; | |
1408 | } | |
1409 | ||
1410 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1411 | { | |
1412 | return false; | |
1413 | } | |
1414 | ||
1415 | static inline int ata_is_host_link(const struct ata_link *link) | |
1416 | { | |
1417 | return 1; | |
1418 | } | |
1419 | #endif /* CONFIG_SATA_PMP */ | |
071f44b1 TH |
1420 | |
1421 | static inline int sata_srst_pmp(struct ata_link *link) | |
1422 | { | |
1423 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) | |
1424 | return SATA_PMP_CTRL_PORT; | |
1425 | return link->pmp; | |
1426 | } | |
1427 | ||
61440db6 TH |
1428 | /* |
1429 | * printk helpers | |
1430 | */ | |
b9075fa9 | 1431 | __printf(3, 4) |
d7bead1b JP |
1432 | void ata_port_printk(const struct ata_port *ap, const char *level, |
1433 | const char *fmt, ...); | |
b9075fa9 | 1434 | __printf(3, 4) |
d7bead1b JP |
1435 | void ata_link_printk(const struct ata_link *link, const char *level, |
1436 | const char *fmt, ...); | |
b9075fa9 | 1437 | __printf(3, 4) |
d7bead1b JP |
1438 | void ata_dev_printk(const struct ata_device *dev, const char *level, |
1439 | const char *fmt, ...); | |
a9a79dfe JP |
1440 | |
1441 | #define ata_port_err(ap, fmt, ...) \ | |
1442 | ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) | |
1443 | #define ata_port_warn(ap, fmt, ...) \ | |
1444 | ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1445 | #define ata_port_notice(ap, fmt, ...) \ | |
1446 | ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1447 | #define ata_port_info(ap, fmt, ...) \ | |
1448 | ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) | |
1449 | #define ata_port_dbg(ap, fmt, ...) \ | |
1450 | ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1451 | ||
1452 | #define ata_link_err(link, fmt, ...) \ | |
1453 | ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) | |
1454 | #define ata_link_warn(link, fmt, ...) \ | |
1455 | ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1456 | #define ata_link_notice(link, fmt, ...) \ | |
1457 | ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1458 | #define ata_link_info(link, fmt, ...) \ | |
1459 | ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) | |
1460 | #define ata_link_dbg(link, fmt, ...) \ | |
1461 | ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1462 | ||
1463 | #define ata_dev_err(dev, fmt, ...) \ | |
1464 | ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) | |
1465 | #define ata_dev_warn(dev, fmt, ...) \ | |
1466 | ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1467 | #define ata_dev_notice(dev, fmt, ...) \ | |
1468 | ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1469 | #define ata_dev_info(dev, fmt, ...) \ | |
1470 | ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) | |
1471 | #define ata_dev_dbg(dev, fmt, ...) \ | |
1472 | ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1da177e4 | 1473 | |
06296a1e JP |
1474 | void ata_print_version(const struct device *dev, const char *version); |
1475 | ||
f3e81b19 TH |
1476 | /* |
1477 | * ata_eh_info helpers | |
1478 | */ | |
b9075fa9 JP |
1479 | extern __printf(2, 3) |
1480 | void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); | |
1481 | extern __printf(2, 3) | |
1482 | void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); | |
b64bbc39 | 1483 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1484 | |
c0b6c037 TH |
1485 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1486 | { | |
b558eddd | 1487 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
f8f1e1cc | 1488 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
b558eddd | 1489 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1490 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1491 | } | |
1492 | ||
cbcdd875 TH |
1493 | /* |
1494 | * port description helpers | |
1495 | */ | |
b9075fa9 JP |
1496 | extern __printf(2, 3) |
1497 | void ata_port_desc(struct ata_port *ap, const char *fmt, ...); | |
cbcdd875 TH |
1498 | #ifdef CONFIG_PCI |
1499 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1500 | const char *name); | |
1501 | #endif | |
1502 | ||
1da177e4 LT |
1503 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1504 | { | |
1505 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1506 | } | |
1507 | ||
2ab7db1f TH |
1508 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1509 | { | |
83c063dd | 1510 | return tag == ATA_TAG_INTERNAL; |
2ab7db1f TH |
1511 | } |
1512 | ||
5806db22 TH |
1513 | /* |
1514 | * device helpers | |
1515 | */ | |
e1211e3f | 1516 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1517 | { |
e0a71752 | 1518 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
9162c657 HR |
1519 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB || |
1520 | class == ATA_DEV_ZAC; | |
597afd21 TH |
1521 | } |
1522 | ||
e1211e3f | 1523 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1524 | { |
e0a71752 TH |
1525 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
1526 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; | |
e1211e3f TH |
1527 | } |
1528 | ||
002c8054 TH |
1529 | static inline unsigned int ata_class_absent(unsigned int class) |
1530 | { | |
1531 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1532 | } | |
1533 | ||
e1211e3f TH |
1534 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1535 | { | |
1536 | return ata_class_enabled(dev->class); | |
1537 | } | |
1538 | ||
1539 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1540 | { | |
1541 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1542 | } |
1543 | ||
002c8054 TH |
1544 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1545 | { | |
1546 | return ata_class_absent(dev->class); | |
1547 | } | |
1548 | ||
5806db22 | 1549 | /* |
f58229f8 | 1550 | * link helpers |
5806db22 | 1551 | */ |
f58229f8 | 1552 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1553 | { |
8989805d | 1554 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1555 | return 2; |
1556 | return 1; | |
1557 | } | |
1558 | ||
da917d69 TH |
1559 | static inline int ata_link_active(struct ata_link *link) |
1560 | { | |
1561 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1562 | } | |
1563 | ||
1eca4365 TH |
1564 | /* |
1565 | * Iterators | |
1566 | * | |
1567 | * ATA_LITER_* constants are used to select link iteration mode and | |
1568 | * ATA_DITER_* device iteration mode. | |
1569 | * | |
1570 | * For a custom iteration directly using ata_{link|dev}_next(), if | |
1571 | * @link or @dev, respectively, is NULL, the first element is | |
1572 | * returned. @dev and @link can be any valid device or link and the | |
1573 | * next element according to the iteration mode will be returned. | |
1574 | * After the last element, NULL is returned. | |
1575 | */ | |
1576 | enum ata_link_iter_mode { | |
1577 | ATA_LITER_EDGE, /* if present, PMP links only; otherwise, | |
1578 | * host link. no slave link */ | |
1579 | ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ | |
1580 | ATA_LITER_PMP_FIRST, /* PMP links followed by host link, | |
1581 | * slave link still comes after host link */ | |
1582 | }; | |
1583 | ||
1584 | enum ata_dev_iter_mode { | |
1585 | ATA_DITER_ENABLED, | |
1586 | ATA_DITER_ENABLED_REVERSE, | |
1587 | ATA_DITER_ALL, | |
1588 | ATA_DITER_ALL_REVERSE, | |
1589 | }; | |
1590 | ||
1591 | extern struct ata_link *ata_link_next(struct ata_link *link, | |
1592 | struct ata_port *ap, | |
1593 | enum ata_link_iter_mode mode); | |
1594 | ||
1595 | extern struct ata_device *ata_dev_next(struct ata_device *dev, | |
1596 | struct ata_link *link, | |
1597 | enum ata_dev_iter_mode mode); | |
1598 | ||
1599 | /* | |
1600 | * Shortcut notation for iterations | |
1601 | * | |
1602 | * ata_for_each_link() iterates over each link of @ap according to | |
1603 | * @mode. @link points to the current link in the loop. @link is | |
1604 | * NULL after loop termination. ata_for_each_dev() works the same way | |
1605 | * except that it iterates over each device of @link. | |
1606 | * | |
1607 | * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be | |
1608 | * specified when using the following shorthand notations. Only the | |
1609 | * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be | |
1610 | * specified. This not only increases brevity but also makes it | |
1611 | * impossible to use ATA_LITER_* for device iteration or vice-versa. | |
1612 | */ | |
1613 | #define ata_for_each_link(link, ap, mode) \ | |
1614 | for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ | |
1615 | (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) | |
1616 | ||
1617 | #define ata_for_each_dev(dev, link, mode) \ | |
1618 | for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ | |
1619 | (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) | |
5806db22 | 1620 | |
6d1245bf TH |
1621 | /** |
1622 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1623 | * @dev: ATA device to test for | |
1624 | * | |
1625 | * LOCKING: | |
1626 | * spin_lock_irqsave(host lock) | |
1627 | * | |
1628 | * RETURNS: | |
1629 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1630 | */ | |
1631 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1632 | { | |
1633 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1634 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1635 | } | |
0baab86b | 1636 | |
87fb6c31 MC |
1637 | static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) |
1638 | { | |
1639 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && | |
1640 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & | |
1641 | ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); | |
1642 | } | |
1643 | ||
1da177e4 LT |
1644 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1645 | { | |
1646 | qc->tf.ctl |= ATA_NIEN; | |
1647 | } | |
1648 | ||
f69499f4 TH |
1649 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1650 | unsigned int tag) | |
1da177e4 LT |
1651 | { |
1652 | if (likely(ata_tag_valid(tag))) | |
1653 | return &ap->qcmd[tag]; | |
1654 | return NULL; | |
1655 | } | |
1656 | ||
f69499f4 TH |
1657 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1658 | unsigned int tag) | |
1659 | { | |
1660 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1661 | ||
1662 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1663 | return qc; | |
1664 | ||
1665 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1666 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1667 | return qc; | |
1668 | ||
1669 | return NULL; | |
1670 | } | |
1671 | ||
aacda375 TH |
1672 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1673 | { | |
1674 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); | |
1675 | } | |
1676 | ||
3373efd8 | 1677 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1678 | { |
1679 | memset(tf, 0, sizeof(*tf)); | |
1680 | ||
5fe7454a | 1681 | #ifdef CONFIG_ATA_SFF |
9af5c9c9 | 1682 | tf->ctl = dev->link->ap->ctl; |
5fe7454a TH |
1683 | #else |
1684 | tf->ctl = ATA_DEVCTL_OBS; | |
1685 | #endif | |
3373efd8 | 1686 | if (dev->devno == 0) |
1da177e4 LT |
1687 | tf->device = ATA_DEVICE_OBS; |
1688 | else | |
1689 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1690 | } | |
1691 | ||
2c13b7ce JG |
1692 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1693 | { | |
501e0c50 | 1694 | qc->dma_dir = DMA_NONE; |
ff2aeb1e | 1695 | qc->sg = NULL; |
2c13b7ce | 1696 | qc->flags = 0; |
87260216 JA |
1697 | qc->cursg = NULL; |
1698 | qc->cursg_ofs = 0; | |
aacda375 | 1699 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
7a801184 | 1700 | qc->n_elem = 0; |
a22e2eb0 | 1701 | qc->err_mask = 0; |
5a5dbd18 | 1702 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1703 | |
3373efd8 | 1704 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1705 | |
1706 | /* init result_tf such that it indicates normal completion */ | |
1707 | qc->result_tf.command = ATA_DRDY; | |
1708 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1709 | } |
1710 | ||
057ace5e | 1711 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1712 | { |
1713 | return ata_id_wcache_enabled(dev->id) || | |
1714 | ata_id_has_flush(dev->id) || | |
1715 | ata_id_has_flush_ext(dev->id); | |
1716 | } | |
1717 | ||
a7dac447 JG |
1718 | static inline unsigned int ac_err_mask(u8 status) |
1719 | { | |
3655d1d3 | 1720 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1721 | return AC_ERR_HSM; |
a7dac447 JG |
1722 | if (status & (ATA_ERR | ATA_DF)) |
1723 | return AC_ERR_DEV; | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static inline unsigned int __ac_err_mask(u8 status) | |
1728 | { | |
1729 | unsigned int mask = ac_err_mask(status); | |
1730 | if (mask == 0) | |
1731 | return AC_ERR_OTHER; | |
1732 | return mask; | |
1733 | } | |
1734 | ||
35bb94b1 JG |
1735 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1736 | { | |
4911487a | 1737 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1738 | } |
1739 | ||
78ab88f0 TH |
1740 | static inline int ata_check_ready(u8 status) |
1741 | { | |
005b1f74 JG |
1742 | if (!(status & ATA_BUSY)) |
1743 | return 1; | |
78ab88f0 TH |
1744 | |
1745 | /* 0xff indicates either no device or device not ready */ | |
1746 | if (status == 0xff) | |
1747 | return -ENODEV; | |
1748 | ||
005b1f74 | 1749 | return 0; |
78ab88f0 TH |
1750 | } |
1751 | ||
341c2c95 TH |
1752 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
1753 | unsigned long timeout_msecs) | |
1754 | { | |
1755 | return from_jiffies + msecs_to_jiffies(timeout_msecs); | |
1756 | } | |
1757 | ||
b15b3eba AC |
1758 | /* Don't open code these in drivers as there are traps. Firstly the range may |
1759 | change in future hardware and specs, secondly 0xFF means 'no DMA' but is | |
1760 | > UDMA_0. Dyma ddreigiau */ | |
1761 | ||
1762 | static inline int ata_using_mwdma(struct ata_device *adev) | |
1763 | { | |
1764 | if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) | |
1765 | return 1; | |
1766 | return 0; | |
1767 | } | |
1768 | ||
1769 | static inline int ata_using_udma(struct ata_device *adev) | |
1770 | { | |
1771 | if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) | |
1772 | return 1; | |
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | static inline int ata_dma_enabled(struct ata_device *adev) | |
1777 | { | |
1778 | return (adev->dma_mode == 0xFF ? 0 : 1); | |
1779 | } | |
48515f6c TH |
1780 | |
1781 | /************************************************************************** | |
1782 | * PMP - drivers/ata/libata-pmp.c | |
1783 | */ | |
88fcd562 TH |
1784 | #ifdef CONFIG_SATA_PMP |
1785 | ||
48515f6c TH |
1786 | extern const struct ata_port_operations sata_pmp_port_ops; |
1787 | ||
1788 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); | |
1789 | extern void sata_pmp_error_handler(struct ata_port *ap); | |
1790 | ||
88fcd562 TH |
1791 | #else /* CONFIG_SATA_PMP */ |
1792 | ||
1793 | #define sata_pmp_port_ops sata_port_ops | |
1794 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer | |
1795 | #define sata_pmp_error_handler ata_std_error_handler | |
1796 | ||
1797 | #endif /* CONFIG_SATA_PMP */ | |
1798 | ||
48515f6c | 1799 | |
624d5c51 TH |
1800 | /************************************************************************** |
1801 | * SFF - drivers/ata/libata-sff.c | |
1802 | */ | |
127102ae TH |
1803 | #ifdef CONFIG_ATA_SFF |
1804 | ||
624d5c51 | 1805 | extern const struct ata_port_operations ata_sff_port_ops; |
871af121 | 1806 | extern const struct ata_port_operations ata_bmdma32_port_ops; |
624d5c51 TH |
1807 | |
1808 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ | |
1809 | #define ATA_PIO_SHT(drv_name) \ | |
1810 | ATA_BASE_SHT(drv_name), \ | |
1811 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1812 | .dma_boundary = ATA_DMA_BOUNDARY | |
1813 | ||
9363c382 TH |
1814 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
1815 | extern u8 ata_sff_check_status(struct ata_port *ap); | |
a57c1bad AC |
1816 | extern void ata_sff_pause(struct ata_port *ap); |
1817 | extern void ata_sff_dma_pause(struct ata_port *ap); | |
9363c382 TH |
1818 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
1819 | unsigned long timeout_pat, unsigned long timeout); | |
705e76be | 1820 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
9363c382 TH |
1821 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1822 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); | |
1823 | extern void ata_sff_exec_command(struct ata_port *ap, | |
1824 | const struct ata_taskfile *tf); | |
1825 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, | |
624d5c51 | 1826 | unsigned char *buf, unsigned int buflen, int rw); |
871af121 AC |
1827 | extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, |
1828 | unsigned char *buf, unsigned int buflen, int rw); | |
9363c382 | 1829 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
624d5c51 | 1830 | unsigned char *buf, unsigned int buflen, int rw); |
e42a542b | 1831 | extern void ata_sff_irq_on(struct ata_port *ap); |
9363c382 TH |
1832 | extern void ata_sff_irq_clear(struct ata_port *ap); |
1833 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, | |
1834 | u8 status, int in_wq); | |
64b97594 VK |
1835 | extern void ata_sff_queue_work(struct work_struct *work); |
1836 | extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, | |
1837 | unsigned long delay); | |
ea3c6450 | 1838 | extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); |
9363c382 | 1839 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); |
22183bf5 | 1840 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
c3b28894 | 1841 | extern unsigned int ata_sff_port_intr(struct ata_port *ap, |
9363c382 TH |
1842 | struct ata_queued_cmd *qc); |
1843 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); | |
c96f1732 | 1844 | extern void ata_sff_lost_interrupt(struct ata_port *ap); |
9363c382 TH |
1845 | extern void ata_sff_freeze(struct ata_port *ap); |
1846 | extern void ata_sff_thaw(struct ata_port *ap); | |
1847 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); | |
1848 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, | |
1849 | u8 *r_err); | |
705e76be TH |
1850 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
1851 | unsigned long deadline); | |
9363c382 | 1852 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
624d5c51 | 1853 | unsigned long deadline); |
9363c382 TH |
1854 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1855 | unsigned long deadline); | |
1856 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); | |
3d47aa8e | 1857 | extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); |
9363c382 | 1858 | extern void ata_sff_error_handler(struct ata_port *ap); |
9363c382 | 1859 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
624d5c51 | 1860 | #ifdef CONFIG_PCI |
9363c382 TH |
1861 | extern int ata_pci_sff_init_host(struct ata_host *host); |
1862 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, | |
624d5c51 TH |
1863 | const struct ata_port_info * const * ppi, |
1864 | struct ata_host **r_host); | |
9363c382 | 1865 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
624d5c51 TH |
1866 | irq_handler_t irq_handler, |
1867 | struct scsi_host_template *sht); | |
9363c382 | 1868 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
16ea0fc9 AC |
1869 | const struct ata_port_info * const * ppi, |
1870 | struct scsi_host_template *sht, void *host_priv, int hflags); | |
624d5c51 TH |
1871 | #endif /* CONFIG_PCI */ |
1872 | ||
9a7780c9 TH |
1873 | #ifdef CONFIG_ATA_BMDMA |
1874 | ||
1875 | extern const struct ata_port_operations ata_bmdma_port_ops; | |
1876 | ||
1877 | #define ATA_BMDMA_SHT(drv_name) \ | |
1878 | ATA_BASE_SHT(drv_name), \ | |
1879 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1880 | .dma_boundary = ATA_DMA_BOUNDARY | |
1881 | ||
f47451c4 | 1882 | extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); |
360ff783 | 1883 | extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); |
f47451c4 | 1884 | extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); |
c3b28894 TH |
1885 | extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, |
1886 | struct ata_queued_cmd *qc); | |
1887 | extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); | |
fe06e5f9 TH |
1888 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
1889 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); | |
37f65b8b | 1890 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
9f2f7210 TH |
1891 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1892 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
1893 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); | |
1894 | extern u8 ata_bmdma_status(struct ata_port *ap); | |
c7087652 TH |
1895 | extern int ata_bmdma_port_start(struct ata_port *ap); |
1896 | extern int ata_bmdma_port_start32(struct ata_port *ap); | |
9f2f7210 TH |
1897 | |
1898 | #ifdef CONFIG_PCI | |
1899 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); | |
c7087652 | 1900 | extern void ata_pci_bmdma_init(struct ata_host *host); |
1c5afdf7 TH |
1901 | extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, |
1902 | const struct ata_port_info * const * ppi, | |
1903 | struct ata_host **r_host); | |
1904 | extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, | |
1905 | const struct ata_port_info * const * ppi, | |
1906 | struct scsi_host_template *sht, | |
1907 | void *host_priv, int hflags); | |
9f2f7210 | 1908 | #endif /* CONFIG_PCI */ |
9a7780c9 | 1909 | #endif /* CONFIG_ATA_BMDMA */ |
9f2f7210 | 1910 | |
624d5c51 | 1911 | /** |
9363c382 | 1912 | * ata_sff_busy_wait - Wait for a port status register |
624d5c51 TH |
1913 | * @ap: Port to wait for. |
1914 | * @bits: bits that must be clear | |
1915 | * @max: number of 10uS waits to perform | |
1916 | * | |
1917 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1918 | * status register to be cleared. | |
1919 | * Returns final value of status register. | |
1920 | * | |
1921 | * LOCKING: | |
1922 | * Inherited from caller. | |
1923 | */ | |
9363c382 TH |
1924 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1925 | unsigned int max) | |
624d5c51 TH |
1926 | { |
1927 | u8 status; | |
1928 | ||
1929 | do { | |
1930 | udelay(10); | |
5682ed33 | 1931 | status = ap->ops->sff_check_status(ap); |
624d5c51 TH |
1932 | max--; |
1933 | } while (status != 0xff && (status & bits) && (max > 0)); | |
1934 | ||
1935 | return status; | |
1936 | } | |
1937 | ||
1938 | /** | |
1939 | * ata_wait_idle - Wait for a port to be idle. | |
1940 | * @ap: Port to wait for. | |
1941 | * | |
1942 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1943 | * Returns final value of status register. | |
1944 | * | |
1945 | * LOCKING: | |
1946 | * Inherited from caller. | |
1947 | */ | |
1948 | static inline u8 ata_wait_idle(struct ata_port *ap) | |
1949 | { | |
9363c382 | 1950 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
624d5c51 TH |
1951 | |
1952 | #ifdef ATA_DEBUG | |
1953 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) | |
1954 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", | |
1955 | status); | |
1956 | #endif | |
1957 | ||
1958 | return status; | |
1959 | } | |
127102ae | 1960 | #endif /* CONFIG_ATA_SFF */ |
624d5c51 | 1961 | |
1da177e4 | 1962 | #endif /* __LINUX_LIBATA_H__ */ |