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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 | 48 | #else |
dcd3ea81 CH |
49 | #define ATA_PRIMARY_IRQ(dev) 14 |
50 | #define ATA_SECONDARY_IRQ(dev) 15 | |
a6d967a4 | 51 | #endif |
2ec7df04 | 52 | |
1da177e4 | 53 | /* |
bfd60579 RD |
54 | * compile-time options: to be removed as soon as all the drivers are |
55 | * converted to the new debugging mechanism | |
1da177e4 LT |
56 | */ |
57 | #undef ATA_DEBUG /* debugging output */ | |
58 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ | |
59 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ | |
60 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ | |
1da177e4 LT |
61 | |
62 | ||
63 | /* note: prints function name for you */ | |
64 | #ifdef ATA_DEBUG | |
1f938d06 | 65 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 | 66 | #ifdef ATA_VERBOSE_DEBUG |
1f938d06 | 67 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
1da177e4 LT |
68 | #else |
69 | #define VPRINTK(fmt, args...) | |
70 | #endif /* ATA_VERBOSE_DEBUG */ | |
71 | #else | |
72 | #define DPRINTK(fmt, args...) | |
73 | #define VPRINTK(fmt, args...) | |
74 | #endif /* ATA_DEBUG */ | |
75 | ||
1f938d06 | 76 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
2c13b7ce | 77 | |
06296a1e JP |
78 | #define ata_print_version_once(dev, version) \ |
79 | ({ \ | |
80 | static bool __print_once; \ | |
81 | \ | |
82 | if (!__print_once) { \ | |
83 | __print_once = true; \ | |
84 | ata_print_version(dev, version); \ | |
85 | } \ | |
86 | }) | |
87 | ||
bfd60579 RD |
88 | /* NEW: debug levels */ |
89 | #define HAVE_LIBATA_MSG 1 | |
90 | ||
91 | enum { | |
92 | ATA_MSG_DRV = 0x0001, | |
93 | ATA_MSG_INFO = 0x0002, | |
94 | ATA_MSG_PROBE = 0x0004, | |
95 | ATA_MSG_WARN = 0x0008, | |
96 | ATA_MSG_MALLOC = 0x0010, | |
97 | ATA_MSG_CTL = 0x0020, | |
98 | ATA_MSG_INTR = 0x0040, | |
99 | ATA_MSG_ERR = 0x0080, | |
100 | }; | |
101 | ||
102 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
103 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
104 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
105 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
106 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
107 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
108 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
109 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
110 | ||
111 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
112 | { | |
113 | if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
114 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
115 | if (!dval) | |
116 | return 0; | |
117 | return (1 << dval) - 1; | |
118 | } | |
119 | ||
1da177e4 LT |
120 | /* defines only for the constants which don't work well as enums */ |
121 | #define ATA_TAG_POISON 0xfafbfcfdU | |
122 | ||
1da177e4 LT |
123 | enum { |
124 | /* various global constants */ | |
125 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, | |
d26fc955 | 126 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
1da177e4 | 127 | ATA_DEF_QUEUE = 1, |
2ab7db1f | 128 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
a6e6ce8e | 129 | ATA_MAX_QUEUE = 32, |
2ab7db1f | 130 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
341c2c95 | 131 | ATA_SHORT_PAUSE = 16, |
1da177e4 | 132 | |
140b5e59 TH |
133 | ATAPI_MAX_DRAIN = 16 << 10, |
134 | ||
b558eddd TH |
135 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
136 | ||
1da177e4 | 137 | ATA_SHT_EMULATED = 1, |
1da177e4 | 138 | ATA_SHT_THIS_ID = -1, |
cf482935 | 139 | ATA_SHT_USE_CLUSTERING = 1, |
1da177e4 | 140 | |
dc34e7e1 SS |
141 | /* struct ata_taskfile flags */ |
142 | ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ | |
143 | ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ | |
144 | ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ | |
145 | ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ | |
146 | ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ | |
147 | ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ | |
148 | ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ | |
149 | ||
1da177e4 | 150 | /* struct ata_device stuff */ |
949b38af TH |
151 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
152 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ | |
029f5468 | 153 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
88e49034 | 154 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
6fc49adb | 155 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
6746544c TH |
156 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
157 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ | |
7d77b247 | 158 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
91163006 | 159 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
2557164e | 160 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
949b38af | 161 | |
2557164e KCA |
162 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
163 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ | |
054a5fba | 164 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
00115e0f | 165 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
45fabbb7 | 166 | ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
445d211b | 167 | ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ |
ed36911c | 168 | ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ |
f20ded38 | 169 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
1da177e4 | 170 | |
f20ded38 TH |
171 | ATA_DFLAG_DETACH = (1 << 24), |
172 | ATA_DFLAG_DETACHED = (1 << 25), | |
abdda733 | 173 | |
b1354cbb | 174 | ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ |
65fe1f0f | 175 | ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ |
0d0cdb02 | 176 | ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ |
06dbde5f | 177 | ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ |
6d1003ae | 178 | ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ |
b1354cbb | 179 | |
1da177e4 LT |
180 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
181 | ATA_DEV_ATA = 1, /* ATA device */ | |
182 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ | |
183 | ATA_DEV_ATAPI = 3, /* ATAPI device */ | |
184 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ | |
e0a71752 TH |
185 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
186 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ | |
187 | ATA_DEV_SEMB = 7, /* SEMB */ | |
188 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ | |
9162c657 | 189 | ATA_DEV_ZAC = 9, /* ZAC device */ |
3a92945b HR |
190 | ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ |
191 | ATA_DEV_NONE = 11, /* no device */ | |
1da177e4 | 192 | |
0c88758b | 193 | /* struct ata_link flags */ |
05944bdf | 194 | ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
ae791c05 TH |
195 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
196 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ | |
197 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ | |
198 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, | |
fd995f70 | 199 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
f9df58cb | 200 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
18f7ba4c | 201 | ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
6b7ae954 | 202 | ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ |
ca6d43b0 | 203 | ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ |
09c5b480 | 204 | ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ |
e39b2bb3 | 205 | ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ |
0c88758b | 206 | |
1da177e4 | 207 | /* struct ata_port flags */ |
949b38af | 208 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
1da177e4 | 209 | /* (doesn't imply presence) */ |
949b38af | 210 | ATA_FLAG_SATA = (1 << 1), |
ea013a9b | 211 | ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ |
949b38af TH |
212 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
213 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ | |
214 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ | |
7395acb2 TH |
215 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
216 | * doesn't handle PIO interrupts */ | |
217 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ | |
2a6e58d2 RW |
218 | ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ |
219 | ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ | |
7395acb2 | 220 | ATA_FLAG_DEBUGMSG = (1 << 13), |
388539f3 | 221 | ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ |
b2a8bbe6 | 222 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
f834e49f | 223 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
3cadbcc0 | 224 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
9f45cbd3 | 225 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
e0a71752 | 226 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
40fb59e7 | 227 | ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ |
18f7ba4c KCA |
228 | ATA_FLAG_EM = (1 << 21), /* driver supports enclosure |
229 | * management */ | |
230 | ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity | |
231 | * led */ | |
ae01b249 | 232 | ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ |
a1480a16 | 233 | ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ |
949b38af | 234 | |
b51e9e5d | 235 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
9ec957f2 | 236 | |
e3cf95dd | 237 | |
b51e9e5d TH |
238 | /* struct ata_port pflags */ |
239 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ | |
240 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ | |
241 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ | |
242 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ | |
243 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ | |
b51e9e5d | 244 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
f4d6d004 | 245 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
afaa5c37 | 246 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
ece180d1 TH |
247 | ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
248 | ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ | |
949b38af | 249 | |
b51e9e5d | 250 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
500530f6 | 251 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
c05e6ff0 | 252 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
949b38af | 253 | |
e3cf95dd AC |
254 | ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ |
255 | ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ | |
8a3e33cf | 256 | ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ |
e3cf95dd | 257 | |
949b38af TH |
258 | /* struct ata_queued_cmd flags */ |
259 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ | |
001102d7 | 260 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
27197367 | 261 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
e61e0672 | 262 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
da917d69 | 263 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
e027bd36 | 264 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
03faab78 | 265 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
e61e0672 | 266 | |
9ec957f2 TH |
267 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
268 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ | |
269 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ | |
1da177e4 | 270 | |
4e5ec5db | 271 | /* host set flags */ |
cca3974e | 272 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
ecef7253 | 273 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
886ad09f | 274 | ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
db63a4c8 | 275 | ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ |
9bec2e38 | 276 | |
b8b275ef TH |
277 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
278 | ||
1da177e4 | 279 | /* various lengths of time */ |
341c2c95 TH |
280 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
281 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ | |
341c2c95 | 282 | ATA_TMOUT_INTERNAL_QUICK = 5000, |
45fabbb7 | 283 | ATA_TMOUT_MAX_PARK = 30000, |
1da177e4 | 284 | |
b48d58f5 TH |
285 | /* |
286 | * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms. 2s | |
287 | * is too much without parallel probing. Use 2s if parallel | |
288 | * probing is available, 800ms otherwise. | |
88ff6eaf | 289 | */ |
b48d58f5 TH |
290 | ATA_TMOUT_FF_WAIT_LONG = 2000, |
291 | ATA_TMOUT_FF_WAIT = 800, | |
88ff6eaf | 292 | |
705e76be TH |
293 | /* Spec mandates to wait for ">= 2ms" before checking status |
294 | * after reset. We wait 150ms, because that was the magic | |
295 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for | |
296 | * the period of time between when the ATA command register is | |
297 | * written, and then status is checked. Because waiting for | |
298 | * "a while" before checking status is fine, post SRST, we | |
299 | * perform this magic delay here as well. | |
300 | * | |
301 | * Old drivers/ide uses the 2mS rule and then waits for ready. | |
302 | */ | |
341c2c95 | 303 | ATA_WAIT_AFTER_RESET = 150, |
705e76be | 304 | |
9dadd45b TH |
305 | /* If PMP is supported, we have to do follow-up SRST. As some |
306 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are | |
307 | * advised to wait only for the following duration before | |
308 | * doing SRST. | |
309 | */ | |
e7d3ef13 | 310 | ATA_TMOUT_PMP_SRST_WAIT = 5000, |
9dadd45b | 311 | |
09c5b480 GM |
312 | /* When the LPM policy is set to ATA_LPM_MAX_POWER, there might |
313 | * be a spurious PHY event, so ignore the first PHY event that | |
314 | * occurs within 10s after the policy change. | |
315 | */ | |
316 | ATA_TMOUT_SPURIOUS_PHY = 10000, | |
317 | ||
1da177e4 LT |
318 | /* ATA bus states */ |
319 | BUS_UNKNOWN = 0, | |
320 | BUS_DMA = 1, | |
321 | BUS_IDLE = 2, | |
322 | BUS_NOINTR = 3, | |
323 | BUS_NODATA = 4, | |
324 | BUS_TIMER = 5, | |
325 | BUS_PIO = 6, | |
326 | BUS_EDD = 7, | |
327 | BUS_IDENTIFY = 8, | |
328 | BUS_PACKET = 9, | |
329 | ||
330 | /* SATA port states */ | |
331 | PORT_UNKNOWN = 0, | |
332 | PORT_ENABLED = 1, | |
333 | PORT_DISABLED = 2, | |
334 | ||
335 | /* encoding various smaller bitmaps into a single | |
7dc951ae | 336 | * unsigned long bitmap |
1da177e4 | 337 | */ |
70cd071e TH |
338 | ATA_NR_PIO_MODES = 7, |
339 | ATA_NR_MWDMA_MODES = 5, | |
340 | ATA_NR_UDMA_MODES = 8, | |
1da7b0d0 TH |
341 | |
342 | ATA_SHIFT_PIO = 0, | |
70cd071e TH |
343 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
344 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, | |
345 | ||
cedc9a47 JG |
346 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
347 | ATA_DMA_PAD_SZ = 4, | |
949b38af | 348 | |
0c247c55 TH |
349 | /* ering size */ |
350 | ATA_ERING_SIZE = 32, | |
351 | ||
31cc23b3 TH |
352 | /* return values for ->qc_defer */ |
353 | ATA_DEFER_LINK = 1, | |
354 | ATA_DEFER_PORT = 2, | |
355 | ||
f3e81b19 TH |
356 | /* desc_len for ata_eh_info and context */ |
357 | ATA_EH_DESC_LEN = 80, | |
358 | ||
9be1e979 TH |
359 | /* reset / recovery action types */ |
360 | ATA_EH_REVALIDATE = (1 << 0), | |
cf480626 TH |
361 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
362 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ | |
363 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, | |
f9df58cb | 364 | ATA_EH_ENABLE_LINK = (1 << 3), |
45fabbb7 | 365 | ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
9be1e979 | 366 | |
45fabbb7 | 367 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
b5b3fa38 | 368 | ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
6b7ae954 | 369 | ATA_EH_ENABLE_LINK, |
9be1e979 | 370 | |
f3e81b19 | 371 | /* ata_eh_info->flags */ |
abdda733 | 372 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
1cdaf534 TH |
373 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
374 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ | |
e2f3d75f | 375 | ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ |
abdda733 | 376 | |
0d64a233 TH |
377 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
378 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ | |
379 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ | |
380 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ | |
89692c03 | 381 | ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ |
f3e81b19 | 382 | |
0d64a233 | 383 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
13abf50d | 384 | |
848e4c68 TH |
385 | /* mask of flags to transfer *to* the slave link */ |
386 | ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, | |
387 | ||
a1e10f7e TH |
388 | /* max tries if error condition is still set after ->error_handler */ |
389 | ATA_EH_MAX_TRIES = 5, | |
ad9e2762 | 390 | |
5040ab67 TH |
391 | /* sometimes resuming a link requires several retries */ |
392 | ATA_LINK_RESUME_TRIES = 5, | |
393 | ||
14d2bac1 TH |
394 | /* how hard are we gonna try to probe/recover devices */ |
395 | ATA_PROBE_MAX_TRIES = 3, | |
022bdb07 | 396 | ATA_EH_DEV_TRIES = 3, |
e0a71752 TH |
397 | ATA_EH_PMP_TRIES = 5, |
398 | ATA_EH_PMP_LINK_TRIES = 3, | |
399 | ||
bf1bff6f | 400 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
f5914a46 | 401 | |
87fbc5a0 TH |
402 | /* This should match the actual table size of |
403 | * ata_eh_cmd_timeout_table in libata-eh.c. | |
404 | */ | |
6013efd8 | 405 | ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, |
87fbc5a0 | 406 | |
93590859 | 407 | /* Horkage types. May be set by libata or controller on drives |
25985edc | 408 | (some horkage may be drive/controller pair dependent */ |
93590859 AC |
409 | |
410 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ | |
6919a0a6 AC |
411 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
412 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ | |
18d6e9d5 | 413 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
16c55b03 | 414 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
50af2fa1 | 415 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
93328e11 | 416 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
6bbfd53d | 417 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
2d3b8eea | 418 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
9ce8e307 | 419 | ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
6a87e42e TH |
420 | ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
421 | not multiple of 16 bytes */ | |
877d0310 | 422 | ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ |
9062712f | 423 | ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ |
d0cb43b3 | 424 | ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ |
388539f3 | 425 | ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ |
43c9c591 | 426 | ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ |
a32450e1 | 427 | ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ |
966fbe19 | 428 | ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ |
f78dea06 | 429 | ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ |
ecd75ad5 TH |
430 | ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ |
431 | ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ | |
e61f7d1c | 432 | ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ |
5d3abf8f | 433 | ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */ |
71d126fd | 434 | ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ |
af34d637 | 435 | ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ |
b3a70601 | 436 | |
2dcb407e | 437 | /* DMA mask for user DMA control: User visible values; DO NOT |
b3a70601 AC |
438 | renumber */ |
439 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ | |
440 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ | |
441 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ | |
ceb0c642 TH |
442 | |
443 | /* ATAPI command types */ | |
444 | ATAPI_READ = 0, /* READs */ | |
445 | ATAPI_WRITE = 1, /* WRITEs */ | |
446 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ | |
e52dcc48 TH |
447 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
448 | ATAPI_MISC = 4, /* the rest */ | |
624d5c51 TH |
449 | |
450 | /* Timing constants */ | |
451 | ATA_TIMING_SETUP = (1 << 0), | |
452 | ATA_TIMING_ACT8B = (1 << 1), | |
453 | ATA_TIMING_REC8B = (1 << 2), | |
454 | ATA_TIMING_CYC8B = (1 << 3), | |
455 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | | |
456 | ATA_TIMING_CYC8B, | |
457 | ATA_TIMING_ACTIVE = (1 << 4), | |
458 | ATA_TIMING_RECOVER = (1 << 5), | |
3ada9c12 DD |
459 | ATA_TIMING_DMACK_HOLD = (1 << 6), |
460 | ATA_TIMING_CYCLE = (1 << 7), | |
461 | ATA_TIMING_UDMA = (1 << 8), | |
624d5c51 TH |
462 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
463 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | | |
464 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | | |
3ada9c12 DD |
465 | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
466 | ATA_TIMING_UDMA, | |
f1bce7f8 TH |
467 | |
468 | /* ACPI constants */ | |
469 | ATA_ACPI_FILTER_SETXFER = 1 << 0, | |
470 | ATA_ACPI_FILTER_LOCK = 1 << 1, | |
471 | ATA_ACPI_FILTER_DIPM = 1 << 2, | |
fa5b561c TH |
472 | ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ |
473 | ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ | |
f1bce7f8 TH |
474 | |
475 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | | |
476 | ATA_ACPI_FILTER_LOCK | | |
477 | ATA_ACPI_FILTER_DIPM, | |
1da177e4 LT |
478 | }; |
479 | ||
7dc951ae TH |
480 | enum ata_xfer_mask { |
481 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) | |
482 | << ATA_SHIFT_PIO, | |
483 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) | |
484 | << ATA_SHIFT_MWDMA, | |
485 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) | |
486 | << ATA_SHIFT_UDMA, | |
487 | }; | |
488 | ||
14be71f4 | 489 | enum hsm_task_states { |
c56b14d2 | 490 | HSM_ST_IDLE, /* no command on going */ |
71527647 AL |
491 | HSM_ST_FIRST, /* (waiting the device to) |
492 | write CDB or first data block */ | |
c56b14d2 AL |
493 | HSM_ST, /* (waiting the device to) transfer data */ |
494 | HSM_ST_LAST, /* (waiting the device to) complete command */ | |
c56b14d2 | 495 | HSM_ST_ERR, /* error */ |
1da177e4 LT |
496 | }; |
497 | ||
a7dac447 | 498 | enum ata_completion_errors { |
11a56d24 TH |
499 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
500 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
501 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
502 | AC_ERR_MEDIA = (1 << 3), /* media error */ | |
503 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
504 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
505 | AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
506 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
507 | AC_ERR_OTHER = (1 << 8), /* unknown */ | |
55a8e2c8 | 508 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
5335b729 | 509 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
a7dac447 JG |
510 | }; |
511 | ||
c93b263e TH |
512 | /* |
513 | * Link power management policy: If you alter this, you also need to | |
514 | * alter libata-scsi.c (for the ascii descriptions) | |
515 | */ | |
516 | enum ata_lpm_policy { | |
517 | ATA_LPM_UNKNOWN, | |
518 | ATA_LPM_MAX_POWER, | |
519 | ATA_LPM_MED_POWER, | |
520 | ATA_LPM_MIN_POWER, | |
521 | }; | |
522 | ||
6b7ae954 TH |
523 | enum ata_lpm_hints { |
524 | ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ | |
525 | ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ | |
fb329633 | 526 | ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ |
6b7ae954 TH |
527 | }; |
528 | ||
1da177e4 LT |
529 | /* forward declarations */ |
530 | struct scsi_device; | |
531 | struct ata_port_operations; | |
532 | struct ata_port; | |
cc0680a5 | 533 | struct ata_link; |
1da177e4 LT |
534 | struct ata_queued_cmd; |
535 | ||
536 | /* typedefs */ | |
77853bf2 | 537 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
cc0680a5 TH |
538 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
539 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, | |
d4b2bab4 | 540 | unsigned long deadline); |
cc0680a5 | 541 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
1da177e4 | 542 | |
ee959b00 | 543 | extern struct device_attribute dev_attr_link_power_management_policy; |
45fabbb7 | 544 | extern struct device_attribute dev_attr_unload_heads; |
18f7ba4c KCA |
545 | extern struct device_attribute dev_attr_em_message_type; |
546 | extern struct device_attribute dev_attr_em_message; | |
547 | extern struct device_attribute dev_attr_sw_activity; | |
548 | ||
549 | enum sw_activity { | |
550 | OFF, | |
551 | BLINK_ON, | |
552 | BLINK_OFF, | |
553 | }; | |
ca77329f | 554 | |
dc34e7e1 SS |
555 | struct ata_taskfile { |
556 | unsigned long flags; /* ATA_TFLAG_xxx */ | |
557 | u8 protocol; /* ATA_PROT_xxx */ | |
558 | ||
559 | u8 ctl; /* control reg */ | |
560 | ||
561 | u8 hob_feature; /* additional data */ | |
562 | u8 hob_nsect; /* to support LBA48 */ | |
563 | u8 hob_lbal; | |
564 | u8 hob_lbam; | |
565 | u8 hob_lbah; | |
566 | ||
567 | u8 feature; | |
568 | u8 nsect; | |
569 | u8 lbal; | |
570 | u8 lbam; | |
571 | u8 lbah; | |
572 | ||
573 | u8 device; | |
574 | ||
575 | u8 command; /* IO operation */ | |
8be5ad9a MC |
576 | |
577 | u32 auxiliary; /* auxiliary field */ | |
578 | /* from SATA 3.1 and */ | |
579 | /* ATA-8 ACS-3 */ | |
dc34e7e1 SS |
580 | }; |
581 | ||
127102ae | 582 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 583 | struct ata_ioports { |
0d5ff566 TH |
584 | void __iomem *cmd_addr; |
585 | void __iomem *data_addr; | |
586 | void __iomem *error_addr; | |
587 | void __iomem *feature_addr; | |
588 | void __iomem *nsect_addr; | |
589 | void __iomem *lbal_addr; | |
590 | void __iomem *lbam_addr; | |
591 | void __iomem *lbah_addr; | |
592 | void __iomem *device_addr; | |
593 | void __iomem *status_addr; | |
594 | void __iomem *command_addr; | |
595 | void __iomem *altstatus_addr; | |
596 | void __iomem *ctl_addr; | |
9a7780c9 | 597 | #ifdef CONFIG_ATA_BMDMA |
0d5ff566 | 598 | void __iomem *bmdma_addr; |
9a7780c9 | 599 | #endif /* CONFIG_ATA_BMDMA */ |
0d5ff566 | 600 | void __iomem *scr_addr; |
1da177e4 | 601 | }; |
127102ae | 602 | #endif /* CONFIG_ATA_SFF */ |
1da177e4 | 603 | |
cca3974e | 604 | struct ata_host { |
1da177e4 LT |
605 | spinlock_t lock; |
606 | struct device *dev; | |
0d5ff566 | 607 | void __iomem * const *iomap; |
1da177e4 | 608 | unsigned int n_ports; |
1a112d10 | 609 | unsigned int n_tags; /* nr of NCQ tags */ |
1da177e4 | 610 | void *private_data; |
029cfd6b | 611 | struct ata_port_operations *ops; |
5444a6f4 | 612 | unsigned long flags; |
c0c362b6 TH |
613 | |
614 | struct mutex eh_mutex; | |
615 | struct task_struct *eh_owner; | |
616 | ||
032af1ce | 617 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
f0eb62b8 | 618 | struct ata_port *ports[0]; |
1da177e4 LT |
619 | }; |
620 | ||
621 | struct ata_queued_cmd { | |
622 | struct ata_port *ap; | |
623 | struct ata_device *dev; | |
624 | ||
625 | struct scsi_cmnd *scsicmd; | |
626 | void (*scsidone)(struct scsi_cmnd *); | |
627 | ||
628 | struct ata_taskfile tf; | |
629 | u8 cdb[ATAPI_CDB_LEN]; | |
630 | ||
631 | unsigned long flags; /* ATA_QCFLAG_xxx */ | |
632 | unsigned int tag; | |
633 | unsigned int n_elem; | |
5825627c | 634 | unsigned int orig_n_elem; |
1da177e4 LT |
635 | |
636 | int dma_dir; | |
637 | ||
5a5dbd18 | 638 | unsigned int sect_size; |
cedc9a47 | 639 | |
1da177e4 | 640 | unsigned int nbytes; |
aacda375 | 641 | unsigned int extrabytes; |
1da177e4 LT |
642 | unsigned int curbytes; |
643 | ||
1da177e4 | 644 | struct scatterlist sgent; |
1da177e4 | 645 | |
ff2aeb1e | 646 | struct scatterlist *sg; |
1da177e4 | 647 | |
b34e9042 RK |
648 | struct scatterlist *cursg; |
649 | unsigned int cursg_ofs; | |
650 | ||
a22e2eb0 | 651 | unsigned int err_mask; |
e61e0672 | 652 | struct ata_taskfile result_tf; |
1da177e4 LT |
653 | ata_qc_cb_t complete_fn; |
654 | ||
1da177e4 | 655 | void *private_data; |
1c50dc83 | 656 | void *lldd_task; |
1da177e4 LT |
657 | }; |
658 | ||
cca3974e | 659 | struct ata_port_stats { |
1da177e4 LT |
660 | unsigned long unhandled_irq; |
661 | unsigned long idle_irq; | |
662 | unsigned long rw_reqbuf; | |
663 | }; | |
664 | ||
0c247c55 | 665 | struct ata_ering_entry { |
3884f7b0 | 666 | unsigned int eflags; |
0c247c55 TH |
667 | unsigned int err_mask; |
668 | u64 timestamp; | |
669 | }; | |
670 | ||
671 | struct ata_ering { | |
672 | int cursor; | |
673 | struct ata_ering_entry ring[ATA_ERING_SIZE]; | |
674 | }; | |
675 | ||
1da177e4 | 676 | struct ata_device { |
9af5c9c9 | 677 | struct ata_link *link; |
72fa4b74 | 678 | unsigned int devno; /* 0 or 1 */ |
75683fe7 | 679 | unsigned int horkage; /* List of broken features */ |
6866e7bc | 680 | unsigned long flags; /* ATA_DFLAG_xxx */ |
3edebac4 | 681 | struct scsi_device *sdev; /* attached SCSI device */ |
95514fd8 | 682 | void *private_data; |
fafbae87 | 683 | #ifdef CONFIG_ATA_ACPI |
398e0782 | 684 | union acpi_object *gtf_cache; |
110f66d2 | 685 | unsigned int gtf_filter; |
afe75951 AL |
686 | #endif |
687 | #ifdef CONFIG_SATA_ZPODD | |
688 | void *zpodd; | |
fafbae87 | 689 | #endif |
d9027470 | 690 | struct device tdev; |
99cf610a | 691 | /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ |
72fa4b74 | 692 | u64 n_sectors; /* size of device, if ATA */ |
5920dadf | 693 | u64 n_native_sectors; /* native size, if ATA */ |
1da177e4 | 694 | unsigned int class; /* ATA_DEV_xxx */ |
45fabbb7 | 695 | unsigned long unpark_deadline; |
e0a71752 | 696 | |
1da177e4 LT |
697 | u8 pio_mode; |
698 | u8 dma_mode; | |
699 | u8 xfer_mode; | |
700 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ | |
701 | ||
8cbd6df1 AL |
702 | unsigned int multi_count; /* sectors count for |
703 | READ/WRITE MULTIPLE */ | |
b00eec1d | 704 | unsigned int max_sectors; /* per-device max sectors */ |
6e7846e9 | 705 | unsigned int cdb_len; |
8bf62ece | 706 | |
acf356b1 | 707 | /* per-dev xfer mask */ |
7dc951ae TH |
708 | unsigned long pio_mask; |
709 | unsigned long mwdma_mask; | |
710 | unsigned long udma_mask; | |
acf356b1 | 711 | |
8bf62ece AL |
712 | /* for CHS addressing */ |
713 | u16 cylinders; /* Number of cylinders */ | |
714 | u16 heads; /* Number of heads */ | |
715 | u16 sectors; /* Number of sectors per track */ | |
0c247c55 | 716 | |
f7e98930 JG |
717 | union { |
718 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ | |
719 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ | |
4ee34ea3 | 720 | } ____cacheline_aligned; |
99cf610a | 721 | |
803739d2 SH |
722 | /* DEVSLP Timing Variables from Identify Device Data Log */ |
723 | u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; | |
65fe1f0f | 724 | |
ed36911c MC |
725 | /* NCQ send and receive log subcommand support */ |
726 | u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; | |
284b3b77 | 727 | u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; |
ed36911c | 728 | |
6d1003ae HR |
729 | /* ZAC zone configuration */ |
730 | u32 zac_zoned_cap; | |
731 | u32 zac_zones_optimal_open; | |
732 | u32 zac_zones_optimal_nonseq; | |
733 | u32 zac_zones_max_open; | |
734 | ||
99cf610a TH |
735 | /* error history */ |
736 | int spdn_cnt; | |
737 | /* ering is CLEAR_END, read comment above CLEAR_END */ | |
738 | struct ata_ering ering; | |
1da177e4 LT |
739 | }; |
740 | ||
99cf610a TH |
741 | /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are |
742 | * cleared to zero on ata_dev_init(). | |
72fa4b74 | 743 | */ |
99cf610a TH |
744 | #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) |
745 | #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) | |
72fa4b74 | 746 | |
f3e81b19 TH |
747 | struct ata_eh_info { |
748 | struct ata_device *dev; /* offending device */ | |
749 | u32 serror; /* SError from LLDD */ | |
750 | unsigned int err_mask; /* port-wide err_mask */ | |
751 | unsigned int action; /* ATA_EH_* action mask */ | |
47005f25 | 752 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
f3e81b19 | 753 | unsigned int flags; /* ATA_EHI_* flags */ |
abdda733 | 754 | |
abdda733 TH |
755 | unsigned int probe_mask; |
756 | ||
f3e81b19 TH |
757 | char desc[ATA_EH_DESC_LEN]; |
758 | int desc_len; | |
759 | }; | |
760 | ||
761 | struct ata_eh_context { | |
762 | struct ata_eh_info i; | |
763 | int tries[ATA_MAX_DEVICES]; | |
87fbc5a0 TH |
764 | int cmd_timeout_idx[ATA_MAX_DEVICES] |
765 | [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; | |
abdda733 TH |
766 | unsigned int classes[ATA_MAX_DEVICES]; |
767 | unsigned int did_probe_mask; | |
45fabbb7 | 768 | unsigned int unloaded_mask; |
00115e0f TH |
769 | unsigned int saved_ncq_enabled; |
770 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; | |
0a2c0f56 TH |
771 | /* timestamp for the last reset attempt or success */ |
772 | unsigned long last_reset; | |
f3e81b19 TH |
773 | }; |
774 | ||
64578a3d TH |
775 | struct ata_acpi_drive |
776 | { | |
777 | u32 pio; | |
778 | u32 dma; | |
779 | } __packed; | |
780 | ||
781 | struct ata_acpi_gtm { | |
782 | struct ata_acpi_drive drive[2]; | |
783 | u32 flags; | |
784 | } __packed; | |
785 | ||
9af5c9c9 TH |
786 | struct ata_link { |
787 | struct ata_port *ap; | |
8989805d | 788 | int pmp; /* port multiplier port # */ |
9af5c9c9 | 789 | |
d9027470 | 790 | struct device tdev; |
9af5c9c9 TH |
791 | unsigned int active_tag; /* active tag on this link */ |
792 | u32 sactive; /* active NCQ commands */ | |
793 | ||
0c88758b TH |
794 | unsigned int flags; /* ATA_LFLAG_xxx */ |
795 | ||
d127ea7b | 796 | u32 saved_scontrol; /* SControl on probe */ |
9af5c9c9 TH |
797 | unsigned int hw_sata_spd_limit; |
798 | unsigned int sata_spd_limit; | |
799 | unsigned int sata_spd; /* current SATA PHY speed */ | |
6b7ae954 | 800 | enum ata_lpm_policy lpm_policy; |
9af5c9c9 TH |
801 | |
802 | /* record runtime error info, protected by host_set lock */ | |
803 | struct ata_eh_info eh_info; | |
804 | /* EH context */ | |
805 | struct ata_eh_context eh_context; | |
806 | ||
807 | struct ata_device device[ATA_MAX_DEVICES]; | |
09c5b480 GM |
808 | |
809 | unsigned long last_lpm_change; /* when last LPM change happened */ | |
9af5c9c9 | 810 | }; |
d9027470 GG |
811 | #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) |
812 | #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) | |
9af5c9c9 | 813 | |
1da177e4 | 814 | struct ata_port { |
cca3974e | 815 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
029cfd6b | 816 | struct ata_port_operations *ops; |
ba6a1308 | 817 | spinlock_t *lock; |
e3cf95dd AC |
818 | /* Flags owned by the EH context. Only EH should touch these once the |
819 | port is active */ | |
1da177e4 | 820 | unsigned long flags; /* ATA_FLAG_xxx */ |
e3cf95dd | 821 | /* Flags that change dynamically, protected by ap->lock */ |
b51e9e5d | 822 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
44877b4e | 823 | unsigned int print_id; /* user visible unique port ID */ |
e628dc99 | 824 | unsigned int local_port_no; /* host local port num */ |
44877b4e | 825 | unsigned int port_no; /* 0 based port no. inside the host */ |
1da177e4 | 826 | |
127102ae | 827 | #ifdef CONFIG_ATA_SFF |
1da177e4 | 828 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
1da177e4 LT |
829 | u8 ctl; /* cache of ATA control register */ |
830 | u8 last_ctl; /* Cache last written value */ | |
ea3c6450 | 831 | struct ata_link* sff_pio_task_link; /* link currently used */ |
c429137a | 832 | struct delayed_work sff_pio_task; |
9a7780c9 | 833 | #ifdef CONFIG_ATA_BMDMA |
f60d7011 TH |
834 | struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ |
835 | dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ | |
9a7780c9 | 836 | #endif /* CONFIG_ATA_BMDMA */ |
5fe7454a TH |
837 | #endif /* CONFIG_ATA_SFF */ |
838 | ||
1da177e4 LT |
839 | unsigned int pio_mask; |
840 | unsigned int mwdma_mask; | |
841 | unsigned int udma_mask; | |
842 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ | |
1da177e4 LT |
843 | |
844 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; | |
12cb5ce1 | 845 | unsigned long sas_tag_allocated; /* for sas tag allocation only */ |
dedaf2b0 | 846 | unsigned int qc_active; |
da917d69 | 847 | int nr_active_links; /* #links with active qcs */ |
12cb5ce1 | 848 | unsigned int sas_last_tag; /* track next tag hw expects */ |
dedaf2b0 | 849 | |
b1c72916 TH |
850 | struct ata_link link; /* host default link */ |
851 | struct ata_link *slave_link; /* see ata_slave_link_init() */ | |
1da177e4 | 852 | |
8989805d TH |
853 | int nr_pmp_links; /* nr of available PMP links */ |
854 | struct ata_link *pmp_link; /* array of PMP links */ | |
da917d69 | 855 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
8989805d | 856 | |
cca3974e JG |
857 | struct ata_port_stats stats; |
858 | struct ata_host *host; | |
2f1f610b | 859 | struct device *dev; |
d9027470 | 860 | struct device tdev; |
1da177e4 | 861 | |
ad72cf98 | 862 | struct mutex scsi_scan_mutex; |
52bad64d | 863 | struct delayed_work hotplug_task; |
3b01b8af | 864 | struct work_struct scsi_rescan_task; |
86e45b6b | 865 | |
14be71f4 | 866 | unsigned int hsm_task_state; |
1da177e4 | 867 | |
bfd60579 | 868 | u32 msg_enable; |
a72ec4ce | 869 | struct list_head eh_done_q; |
c6cf9e99 | 870 | wait_queue_head_t eh_wait_q; |
a1e10f7e | 871 | int eh_tries; |
45fabbb7 | 872 | struct completion park_req_pending; |
bfd60579 | 873 | |
500530f6 | 874 | pm_message_t pm_mesg; |
6b7ae954 | 875 | enum ata_lpm_policy target_lpm_policy; |
500530f6 | 876 | |
5ddf24c5 TH |
877 | struct timer_list fastdrain_timer; |
878 | unsigned long fastdrain_cnt; | |
879 | ||
18f7ba4c | 880 | int em_message_type; |
1da177e4 | 881 | void *private_data; |
fe635c7e | 882 | |
fafbae87 | 883 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 | 884 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
fafbae87 | 885 | #endif |
84bda12a TH |
886 | /* owned by EH */ |
887 | u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; | |
1da177e4 LT |
888 | }; |
889 | ||
029cfd6b TH |
890 | /* The following initializer overrides a method to NULL whether one of |
891 | * its parent has the method defined or not. This is equivalent to | |
892 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant | |
893 | * expression and thus can't be used as an initializer. | |
894 | */ | |
895 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) | |
896 | ||
1da177e4 | 897 | struct ata_port_operations { |
c1bc899f TH |
898 | /* |
899 | * Command execution | |
900 | */ | |
901 | int (*qc_defer)(struct ata_queued_cmd *qc); | |
902 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); | |
903 | void (*qc_prep)(struct ata_queued_cmd *qc); | |
904 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); | |
22183bf5 | 905 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
1da177e4 | 906 | |
c1bc899f TH |
907 | /* |
908 | * Configuration and exception handling | |
909 | */ | |
910 | int (*cable_detect)(struct ata_port *ap); | |
911 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); | |
912 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); | |
913 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); | |
914 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); | |
963e4975 | 915 | unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
1da177e4 | 916 | |
c1bc899f | 917 | void (*dev_config)(struct ata_device *dev); |
1da177e4 | 918 | |
c1bc899f TH |
919 | void (*freeze)(struct ata_port *ap); |
920 | void (*thaw)(struct ata_port *ap); | |
a1efdaba TH |
921 | ata_prereset_fn_t prereset; |
922 | ata_reset_fn_t softreset; | |
923 | ata_reset_fn_t hardreset; | |
924 | ata_postreset_fn_t postreset; | |
925 | ata_prereset_fn_t pmp_prereset; | |
926 | ata_reset_fn_t pmp_softreset; | |
927 | ata_reset_fn_t pmp_hardreset; | |
928 | ata_postreset_fn_t pmp_postreset; | |
c1bc899f | 929 | void (*error_handler)(struct ata_port *ap); |
c96f1732 | 930 | void (*lost_interrupt)(struct ata_port *ap); |
c1bc899f | 931 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
e4a9c373 DW |
932 | void (*sched_eh)(struct ata_port *ap); |
933 | void (*end_eh)(struct ata_port *ap); | |
c1bc899f TH |
934 | |
935 | /* | |
936 | * Optional features | |
937 | */ | |
82ef04fb TH |
938 | int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
939 | int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); | |
c1bc899f TH |
940 | void (*pmp_attach)(struct ata_port *ap); |
941 | void (*pmp_detach)(struct ata_port *ap); | |
6b7ae954 TH |
942 | int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, |
943 | unsigned hints); | |
c1bc899f TH |
944 | |
945 | /* | |
946 | * Start, stop, suspend and resume | |
947 | */ | |
948 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); | |
949 | int (*port_resume)(struct ata_port *ap); | |
950 | int (*port_start)(struct ata_port *ap); | |
951 | void (*port_stop)(struct ata_port *ap); | |
952 | void (*host_stop)(struct ata_host *host); | |
953 | ||
127102ae | 954 | #ifdef CONFIG_ATA_SFF |
c1bc899f TH |
955 | /* |
956 | * SFF / taskfile oriented ops | |
957 | */ | |
5682ed33 | 958 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
41dec29b | 959 | void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); |
5682ed33 TH |
960 | u8 (*sff_check_status)(struct ata_port *ap); |
961 | u8 (*sff_check_altstatus)(struct ata_port *ap); | |
962 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); | |
963 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); | |
964 | void (*sff_exec_command)(struct ata_port *ap, | |
965 | const struct ata_taskfile *tf); | |
966 | unsigned int (*sff_data_xfer)(struct ata_device *dev, | |
967 | unsigned char *buf, unsigned int buflen, int rw); | |
e42a542b | 968 | void (*sff_irq_on)(struct ata_port *); |
27943620 | 969 | bool (*sff_irq_check)(struct ata_port *); |
5682ed33 | 970 | void (*sff_irq_clear)(struct ata_port *); |
8244cd05 | 971 | void (*sff_drain_fifo)(struct ata_queued_cmd *qc); |
5682ed33 | 972 | |
9a7780c9 | 973 | #ifdef CONFIG_ATA_BMDMA |
c1bc899f TH |
974 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
975 | void (*bmdma_start)(struct ata_queued_cmd *qc); | |
976 | void (*bmdma_stop)(struct ata_queued_cmd *qc); | |
977 | u8 (*bmdma_status)(struct ata_port *ap); | |
9a7780c9 | 978 | #endif /* CONFIG_ATA_BMDMA */ |
127102ae | 979 | #endif /* CONFIG_ATA_SFF */ |
c1bc899f | 980 | |
18f7ba4c KCA |
981 | ssize_t (*em_show)(struct ata_port *ap, char *buf); |
982 | ssize_t (*em_store)(struct ata_port *ap, const char *message, | |
983 | size_t size); | |
984 | ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); | |
985 | ssize_t (*sw_activity_store)(struct ata_device *dev, | |
986 | enum sw_activity val); | |
439d7a35 ML |
987 | ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, |
988 | ssize_t size); | |
989 | ||
c1bc899f TH |
990 | /* |
991 | * Obsolete | |
9ec957f2 | 992 | */ |
c1bc899f TH |
993 | void (*phy_reset)(struct ata_port *ap); |
994 | void (*eng_timeout)(struct ata_port *ap); | |
029cfd6b TH |
995 | |
996 | /* | |
997 | * ->inherits must be the last field and all the preceding | |
998 | * fields must be pointers. | |
999 | */ | |
1000 | const struct ata_port_operations *inherits; | |
1da177e4 LT |
1001 | }; |
1002 | ||
1003 | struct ata_port_info { | |
cca3974e | 1004 | unsigned long flags; |
0c88758b | 1005 | unsigned long link_flags; |
1da177e4 LT |
1006 | unsigned long pio_mask; |
1007 | unsigned long mwdma_mask; | |
1008 | unsigned long udma_mask; | |
029cfd6b | 1009 | struct ata_port_operations *port_ops; |
e99f8b5e | 1010 | void *private_data; |
1da177e4 LT |
1011 | }; |
1012 | ||
452503f9 AC |
1013 | struct ata_timing { |
1014 | unsigned short mode; /* ATA mode */ | |
1015 | unsigned short setup; /* t1 */ | |
1016 | unsigned short act8b; /* t2 for 8-bit I/O */ | |
1017 | unsigned short rec8b; /* t2i for 8-bit I/O */ | |
1018 | unsigned short cyc8b; /* t0 for 8-bit I/O */ | |
1019 | unsigned short active; /* t2 or tD */ | |
1020 | unsigned short recover; /* t2i or tK */ | |
3ada9c12 | 1021 | unsigned short dmack_hold; /* tj */ |
452503f9 AC |
1022 | unsigned short cycle; /* t0 */ |
1023 | unsigned short udma; /* t2CYCTYP/2 */ | |
1024 | }; | |
1025 | ||
624d5c51 TH |
1026 | /* |
1027 | * Core layer - drivers/ata/libata-core.c | |
1028 | */ | |
e9c83914 TH |
1029 | extern const unsigned long sata_deb_timing_normal[]; |
1030 | extern const unsigned long sata_deb_timing_hotplug[]; | |
1031 | extern const unsigned long sata_deb_timing_long[]; | |
1032 | ||
029cfd6b | 1033 | extern struct ata_port_operations ata_dummy_port_ops; |
21b0ad4f | 1034 | extern const struct ata_port_info ata_dummy_port_info; |
dd5b06c4 | 1035 | |
b1c04e80 | 1036 | static inline bool ata_is_atapi(u8 prot) |
dc34e7e1 | 1037 | { |
37f92d77 | 1038 | return prot & ATA_PROT_FLAG_ATAPI; |
dc34e7e1 SS |
1039 | } |
1040 | ||
b1c04e80 | 1041 | static inline bool ata_is_pio(u8 prot) |
dc34e7e1 | 1042 | { |
37f92d77 | 1043 | return prot & ATA_PROT_FLAG_PIO; |
dc34e7e1 SS |
1044 | } |
1045 | ||
b1c04e80 | 1046 | static inline bool ata_is_dma(u8 prot) |
dc34e7e1 | 1047 | { |
37f92d77 | 1048 | return prot & ATA_PROT_FLAG_DMA; |
dc34e7e1 SS |
1049 | } |
1050 | ||
b1c04e80 | 1051 | static inline bool ata_is_ncq(u8 prot) |
dc34e7e1 | 1052 | { |
37f92d77 | 1053 | return prot & ATA_PROT_FLAG_NCQ; |
dc34e7e1 SS |
1054 | } |
1055 | ||
b1c04e80 | 1056 | static inline bool ata_is_data(u8 prot) |
dc34e7e1 | 1057 | { |
37f92d77 | 1058 | return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); |
dc34e7e1 SS |
1059 | } |
1060 | ||
1061 | static inline int is_multi_taskfile(struct ata_taskfile *tf) | |
1062 | { | |
1063 | return (tf->command == ATA_CMD_READ_MULTI) || | |
1064 | (tf->command == ATA_CMD_WRITE_MULTI) || | |
1065 | (tf->command == ATA_CMD_READ_MULTI_EXT) || | |
1066 | (tf->command == ATA_CMD_WRITE_MULTI_EXT) || | |
1067 | (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); | |
1068 | } | |
1069 | ||
e9c83914 TH |
1070 | static inline const unsigned long * |
1071 | sata_ehc_deb_timing(struct ata_eh_context *ehc) | |
1072 | { | |
1073 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) | |
1074 | return sata_deb_timing_hotplug; | |
1075 | else | |
1076 | return sata_deb_timing_normal; | |
1077 | } | |
d7bb4cc7 | 1078 | |
dd5b06c4 TH |
1079 | static inline int ata_port_is_dummy(struct ata_port *ap) |
1080 | { | |
1081 | return ap->ops == &ata_dummy_port_ops; | |
1082 | } | |
1083 | ||
936fd732 | 1084 | extern int sata_set_spd(struct ata_link *link); |
0aa1113d | 1085 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
aa2731ad TH |
1086 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
1087 | int (*check_ready)(struct ata_link *link)); | |
936fd732 TH |
1088 | extern int sata_link_debounce(struct ata_link *link, |
1089 | const unsigned long *params, unsigned long deadline); | |
1090 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, | |
1091 | unsigned long deadline); | |
1152b261 TH |
1092 | extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
1093 | bool spm_wakeup); | |
cc0680a5 | 1094 | extern int sata_link_hardreset(struct ata_link *link, |
9dadd45b TH |
1095 | const unsigned long *timing, unsigned long deadline, |
1096 | bool *online, int (*check_ready)(struct ata_link *)); | |
57c9efdf TH |
1097 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
1098 | unsigned long deadline); | |
203c75b8 | 1099 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
2855568b | 1100 | |
f3187195 | 1101 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
f5cda257 TH |
1102 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
1103 | const struct ata_port_info * const * ppi, int n_ports); | |
b1c72916 | 1104 | extern int ata_slave_link_init(struct ata_port *ap); |
ecef7253 | 1105 | extern int ata_host_start(struct ata_host *host); |
f3187195 TH |
1106 | extern int ata_host_register(struct ata_host *host, |
1107 | struct scsi_host_template *sht); | |
f5cda257 TH |
1108 | extern int ata_host_activate(struct ata_host *host, int irq, |
1109 | irq_handler_t irq_handler, unsigned long irq_flags, | |
1110 | struct scsi_host_template *sht); | |
0529c159 | 1111 | extern void ata_host_detach(struct ata_host *host); |
8d8e7d13 | 1112 | extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); |
193515d5 | 1113 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
1da177e4 | 1114 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
f281233d | 1115 | extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
94be9a58 JG |
1116 | extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
1117 | int cmd, void __user *arg); | |
80289167 | 1118 | extern void ata_sas_port_destroy(struct ata_port *); |
cca3974e | 1119 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
80289167 | 1120 | struct ata_port_info *, struct Scsi_Host *); |
b2024459 DW |
1121 | extern void ata_sas_async_probe(struct ata_port *ap); |
1122 | extern int ata_sas_sync_probe(struct ata_port *ap); | |
80289167 BK |
1123 | extern int ata_sas_port_init(struct ata_port *); |
1124 | extern int ata_sas_port_start(struct ata_port *ap); | |
1125 | extern void ata_sas_port_stop(struct ata_port *ap); | |
1126 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); | |
b27dcfb0 | 1127 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); |
936fd732 TH |
1128 | extern int sata_scr_valid(struct ata_link *link); |
1129 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); | |
1130 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); | |
1131 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); | |
b5b3fa38 TH |
1132 | extern bool ata_link_online(struct ata_link *link); |
1133 | extern bool ata_link_offline(struct ata_link *link); | |
6ffa01d8 | 1134 | #ifdef CONFIG_PM |
cca3974e JG |
1135 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
1136 | extern void ata_host_resume(struct ata_host *host); | |
bc6e7c4b DW |
1137 | extern void ata_sas_port_suspend(struct ata_port *ap); |
1138 | extern void ata_sas_port_resume(struct ata_port *ap); | |
2fcbdcb4 | 1139 | #else |
bc6e7c4b | 1140 | static inline void ata_sas_port_suspend(struct ata_port *ap) |
2fcbdcb4 | 1141 | { |
2fcbdcb4 | 1142 | } |
a5a65699 RD |
1143 | static inline void ata_sas_port_resume(struct ata_port *ap) |
1144 | { | |
1145 | } | |
6ffa01d8 | 1146 | #endif |
67846b30 | 1147 | extern int ata_ratelimit(void); |
97750ceb TH |
1148 | extern void ata_msleep(struct ata_port *ap, unsigned int msecs); |
1149 | extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, | |
1150 | u32 val, unsigned long interval, unsigned long timeout); | |
436d34b3 | 1151 | extern int atapi_cmd_type(u8 opcode); |
9977126c TH |
1152 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
1153 | u8 pmp, int is_cmd, u8 *fis); | |
057ace5e | 1154 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
7dc951ae TH |
1155 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
1156 | unsigned long mwdma_mask, unsigned long udma_mask); | |
1157 | extern void ata_unpack_xfermask(unsigned long xfer_mask, | |
1158 | unsigned long *pio_mask, unsigned long *mwdma_mask, | |
1159 | unsigned long *udma_mask); | |
1160 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); | |
1161 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); | |
1162 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); | |
1163 | extern const char *ata_mode_string(unsigned long xfer_mask); | |
1164 | extern unsigned long ata_id_xfermask(const u16 *id); | |
31cc23b3 | 1165 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
e46834cd | 1166 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
1da177e4 LT |
1167 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
1168 | unsigned int n_elem); | |
057ace5e | 1169 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
10305f0f | 1170 | extern void ata_dev_disable(struct ata_device *adev); |
6a62a04d TH |
1171 | extern void ata_id_string(const u16 *id, unsigned char *s, |
1172 | unsigned int ofs, unsigned int len); | |
1173 | extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
1174 | unsigned int ofs, unsigned int len); | |
963e4975 AC |
1175 | extern unsigned int ata_do_dev_read_id(struct ata_device *dev, |
1176 | struct ata_taskfile *tf, u16 *id); | |
f686bcb8 | 1177 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
79f97dad | 1178 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
b27dcfb0 | 1179 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); |
1da177e4 LT |
1180 | extern int ata_std_bios_param(struct scsi_device *sdev, |
1181 | struct block_device *bdev, | |
1182 | sector_t capacity, int geom[]); | |
d8d9129e | 1183 | extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); |
1da177e4 | 1184 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
83c47bcb | 1185 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
a6e6ce8e | 1186 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
db5ed4df | 1187 | int queue_depth); |
f6e67035 | 1188 | extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
db5ed4df | 1189 | int queue_depth); |
3373efd8 | 1190 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
0260731f | 1191 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
0e0b494c JB |
1192 | extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); |
1193 | extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); | |
8393b811 | 1194 | extern bool sata_lpm_ignore_phy_events(struct ata_link *link); |
1da177e4 | 1195 | |
be0d18df AC |
1196 | extern int ata_cable_40wire(struct ata_port *ap); |
1197 | extern int ata_cable_80wire(struct ata_port *ap); | |
1198 | extern int ata_cable_sata(struct ata_port *ap); | |
c88f90c3 | 1199 | extern int ata_cable_ignore(struct ata_port *ap); |
be0d18df AC |
1200 | extern int ata_cable_unknown(struct ata_port *ap); |
1201 | ||
624d5c51 | 1202 | /* Timing helpers */ |
1bc4ccff | 1203 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
6357357c | 1204 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
452503f9 AC |
1205 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
1206 | struct ata_timing *, int, int); | |
1207 | extern void ata_timing_merge(const struct ata_timing *, | |
1208 | const struct ata_timing *, struct ata_timing *, | |
1209 | unsigned int); | |
a0f79b92 | 1210 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
452503f9 | 1211 | |
624d5c51 TH |
1212 | /* PCI */ |
1213 | #ifdef CONFIG_PCI | |
1214 | struct pci_dev; | |
1215 | ||
1216 | struct pci_bits { | |
1217 | unsigned int reg; /* PCI config register to read */ | |
1218 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ | |
1219 | unsigned long mask; | |
1220 | unsigned long val; | |
452503f9 AC |
1221 | }; |
1222 | ||
624d5c51 TH |
1223 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
1224 | extern void ata_pci_remove_one(struct pci_dev *pdev); | |
1225 | ||
1226 | #ifdef CONFIG_PM | |
1227 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1228 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); | |
1229 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); | |
1230 | extern int ata_pci_device_resume(struct pci_dev *pdev); | |
1231 | #endif /* CONFIG_PM */ | |
1232 | #endif /* CONFIG_PCI */ | |
1233 | ||
b7db04d9 BN |
1234 | struct platform_device; |
1235 | ||
1236 | extern int ata_platform_remove_one(struct platform_device *pdev); | |
1237 | ||
624d5c51 TH |
1238 | /* |
1239 | * ACPI - drivers/ata/libata-acpi.c | |
1240 | */ | |
e1ddb4b6 | 1241 | #ifdef CONFIG_ATA_ACPI |
c05e6ff0 TH |
1242 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1243 | { | |
1244 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) | |
1245 | return &ap->__acpi_init_gtm; | |
1246 | return NULL; | |
1247 | } | |
0d02f0b2 TH |
1248 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
1249 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); | |
7c77fa4d TH |
1250 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
1251 | const struct ata_acpi_gtm *gtm); | |
021ee9a6 | 1252 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
e1ddb4b6 | 1253 | #else |
c05e6ff0 TH |
1254 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
1255 | { | |
1256 | return NULL; | |
1257 | } | |
7c77fa4d TH |
1258 | |
1259 | static inline int ata_acpi_stm(const struct ata_port *ap, | |
1260 | struct ata_acpi_gtm *stm) | |
1261 | { | |
1262 | return -ENOSYS; | |
1263 | } | |
1264 | ||
1265 | static inline int ata_acpi_gtm(const struct ata_port *ap, | |
1266 | struct ata_acpi_gtm *stm) | |
1267 | { | |
1268 | return -ENOSYS; | |
1269 | } | |
1270 | ||
1271 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, | |
1272 | const struct ata_acpi_gtm *gtm) | |
1273 | { | |
1274 | return 0; | |
1275 | } | |
021ee9a6 TH |
1276 | |
1277 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, | |
1278 | const struct ata_acpi_gtm *gtm) | |
1279 | { | |
1280 | return 0; | |
1281 | } | |
e1ddb4b6 | 1282 | #endif |
1da177e4 | 1283 | |
ece1d636 | 1284 | /* |
624d5c51 | 1285 | * EH - drivers/ata/libata-eh.c |
ece1d636 | 1286 | */ |
7b70fc03 | 1287 | extern void ata_port_schedule_eh(struct ata_port *ap); |
81c757bc | 1288 | extern void ata_port_wait_eh(struct ata_port *ap); |
dbd82616 | 1289 | extern int ata_link_abort(struct ata_link *link); |
7b70fc03 | 1290 | extern int ata_port_abort(struct ata_port *ap); |
e3180499 | 1291 | extern int ata_port_freeze(struct ata_port *ap); |
7d77b247 | 1292 | extern int sata_async_notification(struct ata_port *ap); |
e3180499 TH |
1293 | |
1294 | extern void ata_eh_freeze_port(struct ata_port *ap); | |
1295 | extern void ata_eh_thaw_port(struct ata_port *ap); | |
7b70fc03 | 1296 | |
ece1d636 TH |
1297 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
1298 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
10acf3b0 | 1299 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
ece1d636 | 1300 | |
f5914a46 TH |
1301 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
1302 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
1303 | ata_postreset_fn_t postreset); | |
a1efdaba | 1304 | extern void ata_std_error_handler(struct ata_port *ap); |
e4a9c373 DW |
1305 | extern void ata_std_sched_eh(struct ata_port *ap); |
1306 | extern void ata_std_end_eh(struct ata_port *ap); | |
8a745f1f | 1307 | extern int ata_link_nr_enabled(struct ata_link *link); |
022bdb07 | 1308 | |
68d1d07b TH |
1309 | /* |
1310 | * Base operations to inherit from and initializers for sht | |
1311 | * | |
1312 | * Operations | |
1313 | * | |
1314 | * base : Common to all libata drivers. | |
1315 | * sata : SATA controllers w/ native interface. | |
1316 | * pmp : SATA controllers w/ PMP support. | |
1317 | * sff : SFF ATA controllers w/o BMDMA support. | |
1318 | * bmdma : SFF ATA controllers w/ BMDMA support. | |
1319 | * | |
1320 | * sht initializers | |
1321 | * | |
1322 | * BASE : Common to all libata drivers. The user must set | |
1323 | * sg_tablesize and dma_boundary. | |
1324 | * PIO : SFF ATA controllers w/ only PIO support. | |
1325 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and | |
1326 | * dma_boundary are set to BMDMA limits. | |
1327 | * NCQ : SATA controllers supporting NCQ. The user must set | |
1328 | * sg_tablesize, dma_boundary and can_queue. | |
1329 | */ | |
1330 | extern const struct ata_port_operations ata_base_port_ops; | |
1331 | extern const struct ata_port_operations sata_port_ops; | |
45fabbb7 | 1332 | extern struct device_attribute *ata_common_sdev_attrs[]; |
68d1d07b | 1333 | |
018d5ef2 AM |
1334 | /* |
1335 | * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated | |
1336 | * by the edge drivers. Because the 'module' field of sht must be the | |
1337 | * edge driver's module reference, otherwise the driver can be unloaded | |
1338 | * even if the scsi_device is being accessed. | |
1339 | */ | |
68d1d07b TH |
1340 | #define ATA_BASE_SHT(drv_name) \ |
1341 | .module = THIS_MODULE, \ | |
1342 | .name = drv_name, \ | |
1343 | .ioctl = ata_scsi_ioctl, \ | |
1344 | .queuecommand = ata_scsi_queuecmd, \ | |
1345 | .can_queue = ATA_DEF_QUEUE, \ | |
12cb5ce1 | 1346 | .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
68d1d07b | 1347 | .this_id = ATA_SHT_THIS_ID, \ |
68d1d07b TH |
1348 | .emulated = ATA_SHT_EMULATED, \ |
1349 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ | |
1350 | .proc_name = drv_name, \ | |
1351 | .slave_configure = ata_scsi_slave_config, \ | |
1352 | .slave_destroy = ata_scsi_slave_destroy, \ | |
45fabbb7 | 1353 | .bios_param = ata_std_bios_param, \ |
d8d9129e | 1354 | .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ |
45fabbb7 | 1355 | .sdev_attrs = ata_common_sdev_attrs |
68d1d07b | 1356 | |
68d1d07b TH |
1357 | #define ATA_NCQ_SHT(drv_name) \ |
1358 | ATA_BASE_SHT(drv_name), \ | |
1359 | .change_queue_depth = ata_scsi_change_queue_depth | |
1360 | ||
071f44b1 TH |
1361 | /* |
1362 | * PMP helpers | |
1363 | */ | |
88fcd562 | 1364 | #ifdef CONFIG_SATA_PMP |
071f44b1 TH |
1365 | static inline bool sata_pmp_supported(struct ata_port *ap) |
1366 | { | |
1367 | return ap->flags & ATA_FLAG_PMP; | |
1368 | } | |
1369 | ||
1370 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1371 | { | |
1372 | return ap->nr_pmp_links != 0; | |
1373 | } | |
1374 | ||
b1c04e80 | 1375 | static inline bool ata_is_host_link(const struct ata_link *link) |
071f44b1 | 1376 | { |
b1c72916 | 1377 | return link == &link->ap->link || link == link->ap->slave_link; |
071f44b1 | 1378 | } |
88fcd562 TH |
1379 | #else /* CONFIG_SATA_PMP */ |
1380 | static inline bool sata_pmp_supported(struct ata_port *ap) | |
1381 | { | |
1382 | return false; | |
1383 | } | |
1384 | ||
1385 | static inline bool sata_pmp_attached(struct ata_port *ap) | |
1386 | { | |
1387 | return false; | |
1388 | } | |
1389 | ||
b1c04e80 | 1390 | static inline bool ata_is_host_link(const struct ata_link *link) |
88fcd562 TH |
1391 | { |
1392 | return 1; | |
1393 | } | |
1394 | #endif /* CONFIG_SATA_PMP */ | |
071f44b1 TH |
1395 | |
1396 | static inline int sata_srst_pmp(struct ata_link *link) | |
1397 | { | |
1398 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) | |
1399 | return SATA_PMP_CTRL_PORT; | |
1400 | return link->pmp; | |
1401 | } | |
1402 | ||
61440db6 TH |
1403 | /* |
1404 | * printk helpers | |
1405 | */ | |
b9075fa9 | 1406 | __printf(3, 4) |
d7bead1b JP |
1407 | void ata_port_printk(const struct ata_port *ap, const char *level, |
1408 | const char *fmt, ...); | |
b9075fa9 | 1409 | __printf(3, 4) |
d7bead1b JP |
1410 | void ata_link_printk(const struct ata_link *link, const char *level, |
1411 | const char *fmt, ...); | |
b9075fa9 | 1412 | __printf(3, 4) |
d7bead1b JP |
1413 | void ata_dev_printk(const struct ata_device *dev, const char *level, |
1414 | const char *fmt, ...); | |
a9a79dfe JP |
1415 | |
1416 | #define ata_port_err(ap, fmt, ...) \ | |
1417 | ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) | |
1418 | #define ata_port_warn(ap, fmt, ...) \ | |
1419 | ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1420 | #define ata_port_notice(ap, fmt, ...) \ | |
1421 | ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1422 | #define ata_port_info(ap, fmt, ...) \ | |
1423 | ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) | |
1424 | #define ata_port_dbg(ap, fmt, ...) \ | |
1425 | ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1426 | ||
1427 | #define ata_link_err(link, fmt, ...) \ | |
1428 | ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) | |
1429 | #define ata_link_warn(link, fmt, ...) \ | |
1430 | ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1431 | #define ata_link_notice(link, fmt, ...) \ | |
1432 | ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1433 | #define ata_link_info(link, fmt, ...) \ | |
1434 | ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) | |
1435 | #define ata_link_dbg(link, fmt, ...) \ | |
1436 | ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1437 | ||
1438 | #define ata_dev_err(dev, fmt, ...) \ | |
1439 | ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) | |
1440 | #define ata_dev_warn(dev, fmt, ...) \ | |
1441 | ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) | |
1442 | #define ata_dev_notice(dev, fmt, ...) \ | |
1443 | ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) | |
1444 | #define ata_dev_info(dev, fmt, ...) \ | |
1445 | ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) | |
1446 | #define ata_dev_dbg(dev, fmt, ...) \ | |
1447 | ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) | |
1da177e4 | 1448 | |
06296a1e JP |
1449 | void ata_print_version(const struct device *dev, const char *version); |
1450 | ||
f3e81b19 TH |
1451 | /* |
1452 | * ata_eh_info helpers | |
1453 | */ | |
b9075fa9 JP |
1454 | extern __printf(2, 3) |
1455 | void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); | |
1456 | extern __printf(2, 3) | |
1457 | void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); | |
b64bbc39 | 1458 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
f3e81b19 | 1459 | |
c0b6c037 TH |
1460 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
1461 | { | |
b558eddd | 1462 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
f8f1e1cc | 1463 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
b558eddd | 1464 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
c0b6c037 TH |
1465 | ehi->err_mask |= AC_ERR_ATA_BUS; |
1466 | } | |
1467 | ||
cbcdd875 TH |
1468 | /* |
1469 | * port description helpers | |
1470 | */ | |
b9075fa9 JP |
1471 | extern __printf(2, 3) |
1472 | void ata_port_desc(struct ata_port *ap, const char *fmt, ...); | |
cbcdd875 TH |
1473 | #ifdef CONFIG_PCI |
1474 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, | |
1475 | const char *name); | |
1476 | #endif | |
1477 | ||
1da177e4 LT |
1478 | static inline unsigned int ata_tag_valid(unsigned int tag) |
1479 | { | |
1480 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; | |
1481 | } | |
1482 | ||
2ab7db1f TH |
1483 | static inline unsigned int ata_tag_internal(unsigned int tag) |
1484 | { | |
83c063dd | 1485 | return tag == ATA_TAG_INTERNAL; |
2ab7db1f TH |
1486 | } |
1487 | ||
5806db22 TH |
1488 | /* |
1489 | * device helpers | |
1490 | */ | |
e1211e3f | 1491 | static inline unsigned int ata_class_enabled(unsigned int class) |
597afd21 | 1492 | { |
e0a71752 | 1493 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
9162c657 HR |
1494 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB || |
1495 | class == ATA_DEV_ZAC; | |
597afd21 TH |
1496 | } |
1497 | ||
e1211e3f | 1498 | static inline unsigned int ata_class_disabled(unsigned int class) |
1da177e4 | 1499 | { |
e0a71752 | 1500 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
3a92945b HR |
1501 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || |
1502 | class == ATA_DEV_ZAC_UNSUP; | |
e1211e3f TH |
1503 | } |
1504 | ||
002c8054 TH |
1505 | static inline unsigned int ata_class_absent(unsigned int class) |
1506 | { | |
1507 | return !ata_class_enabled(class) && !ata_class_disabled(class); | |
1508 | } | |
1509 | ||
e1211e3f TH |
1510 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
1511 | { | |
1512 | return ata_class_enabled(dev->class); | |
1513 | } | |
1514 | ||
1515 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) | |
1516 | { | |
1517 | return ata_class_disabled(dev->class); | |
1da177e4 LT |
1518 | } |
1519 | ||
002c8054 TH |
1520 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
1521 | { | |
1522 | return ata_class_absent(dev->class); | |
1523 | } | |
1524 | ||
5806db22 | 1525 | /* |
f58229f8 | 1526 | * link helpers |
5806db22 | 1527 | */ |
f58229f8 | 1528 | static inline int ata_link_max_devices(const struct ata_link *link) |
5806db22 | 1529 | { |
8989805d | 1530 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
5806db22 TH |
1531 | return 2; |
1532 | return 1; | |
1533 | } | |
1534 | ||
da917d69 TH |
1535 | static inline int ata_link_active(struct ata_link *link) |
1536 | { | |
1537 | return ata_tag_valid(link->active_tag) || link->sactive; | |
1538 | } | |
1539 | ||
1eca4365 TH |
1540 | /* |
1541 | * Iterators | |
1542 | * | |
1543 | * ATA_LITER_* constants are used to select link iteration mode and | |
1544 | * ATA_DITER_* device iteration mode. | |
1545 | * | |
1546 | * For a custom iteration directly using ata_{link|dev}_next(), if | |
1547 | * @link or @dev, respectively, is NULL, the first element is | |
1548 | * returned. @dev and @link can be any valid device or link and the | |
1549 | * next element according to the iteration mode will be returned. | |
1550 | * After the last element, NULL is returned. | |
1551 | */ | |
1552 | enum ata_link_iter_mode { | |
1553 | ATA_LITER_EDGE, /* if present, PMP links only; otherwise, | |
1554 | * host link. no slave link */ | |
1555 | ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ | |
1556 | ATA_LITER_PMP_FIRST, /* PMP links followed by host link, | |
1557 | * slave link still comes after host link */ | |
1558 | }; | |
1559 | ||
1560 | enum ata_dev_iter_mode { | |
1561 | ATA_DITER_ENABLED, | |
1562 | ATA_DITER_ENABLED_REVERSE, | |
1563 | ATA_DITER_ALL, | |
1564 | ATA_DITER_ALL_REVERSE, | |
1565 | }; | |
1566 | ||
1567 | extern struct ata_link *ata_link_next(struct ata_link *link, | |
1568 | struct ata_port *ap, | |
1569 | enum ata_link_iter_mode mode); | |
1570 | ||
1571 | extern struct ata_device *ata_dev_next(struct ata_device *dev, | |
1572 | struct ata_link *link, | |
1573 | enum ata_dev_iter_mode mode); | |
1574 | ||
1575 | /* | |
1576 | * Shortcut notation for iterations | |
1577 | * | |
1578 | * ata_for_each_link() iterates over each link of @ap according to | |
1579 | * @mode. @link points to the current link in the loop. @link is | |
1580 | * NULL after loop termination. ata_for_each_dev() works the same way | |
1581 | * except that it iterates over each device of @link. | |
1582 | * | |
1583 | * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be | |
1584 | * specified when using the following shorthand notations. Only the | |
1585 | * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be | |
1586 | * specified. This not only increases brevity but also makes it | |
1587 | * impossible to use ATA_LITER_* for device iteration or vice-versa. | |
1588 | */ | |
1589 | #define ata_for_each_link(link, ap, mode) \ | |
1590 | for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ | |
1591 | (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) | |
1592 | ||
1593 | #define ata_for_each_dev(dev, link, mode) \ | |
1594 | for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ | |
1595 | (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) | |
5806db22 | 1596 | |
6d1245bf TH |
1597 | /** |
1598 | * ata_ncq_enabled - Test whether NCQ is enabled | |
1599 | * @dev: ATA device to test for | |
1600 | * | |
1601 | * LOCKING: | |
1602 | * spin_lock_irqsave(host lock) | |
1603 | * | |
1604 | * RETURNS: | |
1605 | * 1 if NCQ is enabled for @dev, 0 otherwise. | |
1606 | */ | |
1607 | static inline int ata_ncq_enabled(struct ata_device *dev) | |
1608 | { | |
1609 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | | |
1610 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; | |
1611 | } | |
0baab86b | 1612 | |
87fb6c31 MC |
1613 | static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) |
1614 | { | |
1615 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && | |
1616 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & | |
1617 | ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); | |
1618 | } | |
1619 | ||
5c65d8bb HR |
1620 | static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) |
1621 | { | |
1622 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && | |
1623 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & | |
1624 | ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); | |
1625 | } | |
1626 | ||
28a3fc22 HR |
1627 | static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) |
1628 | { | |
1629 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && | |
1630 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & | |
1631 | ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); | |
1632 | } | |
1633 | ||
284b3b77 HR |
1634 | static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) |
1635 | { | |
1636 | return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & | |
1637 | ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); | |
1638 | } | |
1639 | ||
1da177e4 LT |
1640 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
1641 | { | |
1642 | qc->tf.ctl |= ATA_NIEN; | |
1643 | } | |
1644 | ||
f69499f4 TH |
1645 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
1646 | unsigned int tag) | |
1da177e4 LT |
1647 | { |
1648 | if (likely(ata_tag_valid(tag))) | |
1649 | return &ap->qcmd[tag]; | |
1650 | return NULL; | |
1651 | } | |
1652 | ||
f69499f4 TH |
1653 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
1654 | unsigned int tag) | |
1655 | { | |
1656 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); | |
1657 | ||
1658 | if (unlikely(!qc) || !ap->ops->error_handler) | |
1659 | return qc; | |
1660 | ||
1661 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | | |
1662 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) | |
1663 | return qc; | |
1664 | ||
1665 | return NULL; | |
1666 | } | |
1667 | ||
aacda375 TH |
1668 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
1669 | { | |
1670 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); | |
1671 | } | |
1672 | ||
3373efd8 | 1673 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
1da177e4 LT |
1674 | { |
1675 | memset(tf, 0, sizeof(*tf)); | |
1676 | ||
5fe7454a | 1677 | #ifdef CONFIG_ATA_SFF |
9af5c9c9 | 1678 | tf->ctl = dev->link->ap->ctl; |
5fe7454a TH |
1679 | #else |
1680 | tf->ctl = ATA_DEVCTL_OBS; | |
1681 | #endif | |
3373efd8 | 1682 | if (dev->devno == 0) |
1da177e4 LT |
1683 | tf->device = ATA_DEVICE_OBS; |
1684 | else | |
1685 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; | |
1686 | } | |
1687 | ||
2c13b7ce JG |
1688 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
1689 | { | |
501e0c50 | 1690 | qc->dma_dir = DMA_NONE; |
ff2aeb1e | 1691 | qc->sg = NULL; |
2c13b7ce | 1692 | qc->flags = 0; |
87260216 JA |
1693 | qc->cursg = NULL; |
1694 | qc->cursg_ofs = 0; | |
aacda375 | 1695 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
7a801184 | 1696 | qc->n_elem = 0; |
a22e2eb0 | 1697 | qc->err_mask = 0; |
5a5dbd18 | 1698 | qc->sect_size = ATA_SECT_SIZE; |
2c13b7ce | 1699 | |
3373efd8 | 1700 | ata_tf_init(qc->dev, &qc->tf); |
e61e0672 TH |
1701 | |
1702 | /* init result_tf such that it indicates normal completion */ | |
1703 | qc->result_tf.command = ATA_DRDY; | |
1704 | qc->result_tf.feature = 0; | |
2c13b7ce JG |
1705 | } |
1706 | ||
057ace5e | 1707 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
1da177e4 LT |
1708 | { |
1709 | return ata_id_wcache_enabled(dev->id) || | |
1710 | ata_id_has_flush(dev->id) || | |
1711 | ata_id_has_flush_ext(dev->id); | |
1712 | } | |
1713 | ||
a7dac447 JG |
1714 | static inline unsigned int ac_err_mask(u8 status) |
1715 | { | |
3655d1d3 | 1716 | if (status & (ATA_BUSY | ATA_DRQ)) |
11a56d24 | 1717 | return AC_ERR_HSM; |
a7dac447 JG |
1718 | if (status & (ATA_ERR | ATA_DF)) |
1719 | return AC_ERR_DEV; | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | static inline unsigned int __ac_err_mask(u8 status) | |
1724 | { | |
1725 | unsigned int mask = ac_err_mask(status); | |
1726 | if (mask == 0) | |
1727 | return AC_ERR_OTHER; | |
1728 | return mask; | |
1729 | } | |
1730 | ||
35bb94b1 JG |
1731 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
1732 | { | |
4911487a | 1733 | return *(struct ata_port **)&host->hostdata[0]; |
35bb94b1 JG |
1734 | } |
1735 | ||
78ab88f0 TH |
1736 | static inline int ata_check_ready(u8 status) |
1737 | { | |
005b1f74 JG |
1738 | if (!(status & ATA_BUSY)) |
1739 | return 1; | |
78ab88f0 TH |
1740 | |
1741 | /* 0xff indicates either no device or device not ready */ | |
1742 | if (status == 0xff) | |
1743 | return -ENODEV; | |
1744 | ||
005b1f74 | 1745 | return 0; |
78ab88f0 TH |
1746 | } |
1747 | ||
341c2c95 TH |
1748 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
1749 | unsigned long timeout_msecs) | |
1750 | { | |
1751 | return from_jiffies + msecs_to_jiffies(timeout_msecs); | |
1752 | } | |
1753 | ||
b15b3eba AC |
1754 | /* Don't open code these in drivers as there are traps. Firstly the range may |
1755 | change in future hardware and specs, secondly 0xFF means 'no DMA' but is | |
1756 | > UDMA_0. Dyma ddreigiau */ | |
1757 | ||
1758 | static inline int ata_using_mwdma(struct ata_device *adev) | |
1759 | { | |
1760 | if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) | |
1761 | return 1; | |
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | static inline int ata_using_udma(struct ata_device *adev) | |
1766 | { | |
1767 | if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) | |
1768 | return 1; | |
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | static inline int ata_dma_enabled(struct ata_device *adev) | |
1773 | { | |
1774 | return (adev->dma_mode == 0xFF ? 0 : 1); | |
1775 | } | |
48515f6c TH |
1776 | |
1777 | /************************************************************************** | |
1778 | * PMP - drivers/ata/libata-pmp.c | |
1779 | */ | |
88fcd562 TH |
1780 | #ifdef CONFIG_SATA_PMP |
1781 | ||
48515f6c TH |
1782 | extern const struct ata_port_operations sata_pmp_port_ops; |
1783 | ||
1784 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); | |
1785 | extern void sata_pmp_error_handler(struct ata_port *ap); | |
1786 | ||
88fcd562 TH |
1787 | #else /* CONFIG_SATA_PMP */ |
1788 | ||
1789 | #define sata_pmp_port_ops sata_port_ops | |
1790 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer | |
1791 | #define sata_pmp_error_handler ata_std_error_handler | |
1792 | ||
1793 | #endif /* CONFIG_SATA_PMP */ | |
1794 | ||
48515f6c | 1795 | |
624d5c51 TH |
1796 | /************************************************************************** |
1797 | * SFF - drivers/ata/libata-sff.c | |
1798 | */ | |
127102ae TH |
1799 | #ifdef CONFIG_ATA_SFF |
1800 | ||
624d5c51 | 1801 | extern const struct ata_port_operations ata_sff_port_ops; |
871af121 | 1802 | extern const struct ata_port_operations ata_bmdma32_port_ops; |
624d5c51 TH |
1803 | |
1804 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ | |
1805 | #define ATA_PIO_SHT(drv_name) \ | |
1806 | ATA_BASE_SHT(drv_name), \ | |
1807 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1808 | .dma_boundary = ATA_DMA_BOUNDARY | |
1809 | ||
9363c382 TH |
1810 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
1811 | extern u8 ata_sff_check_status(struct ata_port *ap); | |
a57c1bad AC |
1812 | extern void ata_sff_pause(struct ata_port *ap); |
1813 | extern void ata_sff_dma_pause(struct ata_port *ap); | |
9363c382 TH |
1814 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
1815 | unsigned long timeout_pat, unsigned long timeout); | |
705e76be | 1816 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
9363c382 TH |
1817 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
1818 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); | |
1819 | extern void ata_sff_exec_command(struct ata_port *ap, | |
1820 | const struct ata_taskfile *tf); | |
1821 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, | |
624d5c51 | 1822 | unsigned char *buf, unsigned int buflen, int rw); |
871af121 AC |
1823 | extern unsigned int ata_sff_data_xfer32(struct ata_device *dev, |
1824 | unsigned char *buf, unsigned int buflen, int rw); | |
9363c382 | 1825 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
624d5c51 | 1826 | unsigned char *buf, unsigned int buflen, int rw); |
e42a542b | 1827 | extern void ata_sff_irq_on(struct ata_port *ap); |
9363c382 TH |
1828 | extern void ata_sff_irq_clear(struct ata_port *ap); |
1829 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, | |
1830 | u8 status, int in_wq); | |
64b97594 VK |
1831 | extern void ata_sff_queue_work(struct work_struct *work); |
1832 | extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, | |
1833 | unsigned long delay); | |
ea3c6450 | 1834 | extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); |
9363c382 | 1835 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); |
22183bf5 | 1836 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
c3b28894 | 1837 | extern unsigned int ata_sff_port_intr(struct ata_port *ap, |
9363c382 TH |
1838 | struct ata_queued_cmd *qc); |
1839 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); | |
c96f1732 | 1840 | extern void ata_sff_lost_interrupt(struct ata_port *ap); |
9363c382 TH |
1841 | extern void ata_sff_freeze(struct ata_port *ap); |
1842 | extern void ata_sff_thaw(struct ata_port *ap); | |
1843 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); | |
1844 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, | |
1845 | u8 *r_err); | |
705e76be TH |
1846 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
1847 | unsigned long deadline); | |
9363c382 | 1848 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
624d5c51 | 1849 | unsigned long deadline); |
9363c382 TH |
1850 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
1851 | unsigned long deadline); | |
1852 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); | |
3d47aa8e | 1853 | extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); |
9363c382 | 1854 | extern void ata_sff_error_handler(struct ata_port *ap); |
9363c382 | 1855 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
624d5c51 | 1856 | #ifdef CONFIG_PCI |
9363c382 TH |
1857 | extern int ata_pci_sff_init_host(struct ata_host *host); |
1858 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, | |
624d5c51 TH |
1859 | const struct ata_port_info * const * ppi, |
1860 | struct ata_host **r_host); | |
9363c382 | 1861 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
624d5c51 TH |
1862 | irq_handler_t irq_handler, |
1863 | struct scsi_host_template *sht); | |
9363c382 | 1864 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
16ea0fc9 AC |
1865 | const struct ata_port_info * const * ppi, |
1866 | struct scsi_host_template *sht, void *host_priv, int hflags); | |
624d5c51 TH |
1867 | #endif /* CONFIG_PCI */ |
1868 | ||
9a7780c9 TH |
1869 | #ifdef CONFIG_ATA_BMDMA |
1870 | ||
1871 | extern const struct ata_port_operations ata_bmdma_port_ops; | |
1872 | ||
1873 | #define ATA_BMDMA_SHT(drv_name) \ | |
1874 | ATA_BASE_SHT(drv_name), \ | |
1875 | .sg_tablesize = LIBATA_MAX_PRD, \ | |
1876 | .dma_boundary = ATA_DMA_BOUNDARY | |
1877 | ||
f47451c4 | 1878 | extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); |
360ff783 | 1879 | extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); |
f47451c4 | 1880 | extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); |
c3b28894 TH |
1881 | extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, |
1882 | struct ata_queued_cmd *qc); | |
1883 | extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); | |
fe06e5f9 TH |
1884 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
1885 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); | |
37f65b8b | 1886 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
9f2f7210 TH |
1887 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
1888 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); | |
1889 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); | |
1890 | extern u8 ata_bmdma_status(struct ata_port *ap); | |
c7087652 TH |
1891 | extern int ata_bmdma_port_start(struct ata_port *ap); |
1892 | extern int ata_bmdma_port_start32(struct ata_port *ap); | |
9f2f7210 TH |
1893 | |
1894 | #ifdef CONFIG_PCI | |
1895 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); | |
c7087652 | 1896 | extern void ata_pci_bmdma_init(struct ata_host *host); |
1c5afdf7 TH |
1897 | extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, |
1898 | const struct ata_port_info * const * ppi, | |
1899 | struct ata_host **r_host); | |
1900 | extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, | |
1901 | const struct ata_port_info * const * ppi, | |
1902 | struct scsi_host_template *sht, | |
1903 | void *host_priv, int hflags); | |
9f2f7210 | 1904 | #endif /* CONFIG_PCI */ |
9a7780c9 | 1905 | #endif /* CONFIG_ATA_BMDMA */ |
9f2f7210 | 1906 | |
624d5c51 | 1907 | /** |
9363c382 | 1908 | * ata_sff_busy_wait - Wait for a port status register |
624d5c51 TH |
1909 | * @ap: Port to wait for. |
1910 | * @bits: bits that must be clear | |
1911 | * @max: number of 10uS waits to perform | |
1912 | * | |
1913 | * Waits up to max*10 microseconds for the selected bits in the port's | |
1914 | * status register to be cleared. | |
1915 | * Returns final value of status register. | |
1916 | * | |
1917 | * LOCKING: | |
1918 | * Inherited from caller. | |
1919 | */ | |
9363c382 TH |
1920 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
1921 | unsigned int max) | |
624d5c51 TH |
1922 | { |
1923 | u8 status; | |
1924 | ||
1925 | do { | |
1926 | udelay(10); | |
5682ed33 | 1927 | status = ap->ops->sff_check_status(ap); |
624d5c51 TH |
1928 | max--; |
1929 | } while (status != 0xff && (status & bits) && (max > 0)); | |
1930 | ||
1931 | return status; | |
1932 | } | |
1933 | ||
1934 | /** | |
1935 | * ata_wait_idle - Wait for a port to be idle. | |
1936 | * @ap: Port to wait for. | |
1937 | * | |
1938 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. | |
1939 | * Returns final value of status register. | |
1940 | * | |
1941 | * LOCKING: | |
1942 | * Inherited from caller. | |
1943 | */ | |
1944 | static inline u8 ata_wait_idle(struct ata_port *ap) | |
1945 | { | |
9363c382 | 1946 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
624d5c51 TH |
1947 | |
1948 | #ifdef ATA_DEBUG | |
1949 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) | |
1950 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", | |
1951 | status); | |
1952 | #endif | |
1953 | ||
1954 | return status; | |
1955 | } | |
127102ae | 1956 | #endif /* CONFIG_ATA_SFF */ |
624d5c51 | 1957 | |
1da177e4 | 1958 | #endif /* __LINUX_LIBATA_H__ */ |