| 1 | /* |
| 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/driver-api/libata.rst |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #ifndef __LINUX_LIBATA_H__ |
| 27 | #define __LINUX_LIBATA_H__ |
| 28 | |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/jiffies.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/dma-mapping.h> |
| 33 | #include <linux/scatterlist.h> |
| 34 | #include <linux/io.h> |
| 35 | #include <linux/ata.h> |
| 36 | #include <linux/workqueue.h> |
| 37 | #include <scsi/scsi_host.h> |
| 38 | #include <linux/acpi.h> |
| 39 | #include <linux/cdrom.h> |
| 40 | #include <linux/sched.h> |
| 41 | |
| 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 |
| 47 | #include <asm/libata-portmap.h> |
| 48 | #else |
| 49 | #define ATA_PRIMARY_IRQ(dev) 14 |
| 50 | #define ATA_SECONDARY_IRQ(dev) 15 |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * compile-time options: to be removed as soon as all the drivers are |
| 55 | * converted to the new debugging mechanism |
| 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 */ |
| 61 | |
| 62 | |
| 63 | /* note: prints function name for you */ |
| 64 | #ifdef ATA_DEBUG |
| 65 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
| 66 | #ifdef ATA_VERBOSE_DEBUG |
| 67 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
| 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 | |
| 76 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
| 77 | |
| 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 | |
| 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 | |
| 120 | /* defines only for the constants which don't work well as enums */ |
| 121 | #define ATA_TAG_POISON 0xfafbfcfdU |
| 122 | |
| 123 | enum { |
| 124 | /* various global constants */ |
| 125 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
| 126 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
| 127 | ATA_DEF_QUEUE = 1, |
| 128 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
| 129 | ATA_MAX_QUEUE = 32, |
| 130 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
| 131 | ATA_SHORT_PAUSE = 16, |
| 132 | |
| 133 | ATAPI_MAX_DRAIN = 16 << 10, |
| 134 | |
| 135 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
| 136 | |
| 137 | ATA_SHT_EMULATED = 1, |
| 138 | ATA_SHT_THIS_ID = -1, |
| 139 | ATA_SHT_USE_CLUSTERING = 1, |
| 140 | |
| 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 | |
| 150 | /* struct ata_device stuff */ |
| 151 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
| 152 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
| 153 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
| 154 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
| 155 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
| 156 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
| 157 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
| 158 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
| 159 | ATA_DFLAG_TRUSTED = (1 << 8), /* device supports trusted send/recv */ |
| 160 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
| 161 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
| 162 | |
| 163 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
| 164 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ |
| 165 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
| 166 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
| 167 | ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ |
| 168 | ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ |
| 169 | ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */ |
| 170 | ATA_DFLAG_NCQ_PRIO = (1 << 20), /* device supports NCQ priority */ |
| 171 | ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */ |
| 172 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
| 173 | |
| 174 | ATA_DFLAG_DETACH = (1 << 24), |
| 175 | ATA_DFLAG_DETACHED = (1 << 25), |
| 176 | |
| 177 | ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ |
| 178 | ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ |
| 179 | ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ |
| 180 | ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */ |
| 181 | ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */ |
| 182 | |
| 183 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 184 | ATA_DEV_ATA = 1, /* ATA device */ |
| 185 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 186 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 187 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
| 188 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
| 189 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ |
| 190 | ATA_DEV_SEMB = 7, /* SEMB */ |
| 191 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ |
| 192 | ATA_DEV_ZAC = 9, /* ZAC device */ |
| 193 | ATA_DEV_ZAC_UNSUP = 10, /* ZAC device (unsupported) */ |
| 194 | ATA_DEV_NONE = 11, /* no device */ |
| 195 | |
| 196 | /* struct ata_link flags */ |
| 197 | ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ |
| 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, |
| 202 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
| 203 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
| 204 | ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ |
| 205 | ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ |
| 206 | ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ |
| 207 | ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */ |
| 208 | ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */ |
| 209 | |
| 210 | /* struct ata_port flags */ |
| 211 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
| 212 | /* (doesn't imply presence) */ |
| 213 | ATA_FLAG_SATA = (1 << 1), |
| 214 | ATA_FLAG_NO_LOG_PAGE = (1 << 5), /* do not issue log page read */ |
| 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 */ |
| 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 */ |
| 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 */ |
| 223 | ATA_FLAG_DEBUGMSG = (1 << 13), |
| 224 | ATA_FLAG_FPDMA_AA = (1 << 14), /* driver supports Auto-Activate */ |
| 225 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
| 226 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
| 227 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
| 228 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
| 229 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
| 230 | ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */ |
| 231 | ATA_FLAG_EM = (1 << 21), /* driver supports enclosure |
| 232 | * management */ |
| 233 | ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity |
| 234 | * led */ |
| 235 | ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ |
| 236 | ATA_FLAG_SAS_HOST = (1 << 24), /* SAS host */ |
| 237 | |
| 238 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
| 239 | |
| 240 | |
| 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 */ |
| 247 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
| 248 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
| 249 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
| 250 | ATA_PFLAG_UNLOADING = (1 << 9), /* driver is being unloaded */ |
| 251 | ATA_PFLAG_UNLOADED = (1 << 10), /* driver is unloaded */ |
| 252 | |
| 253 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
| 254 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
| 255 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
| 256 | |
| 257 | ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */ |
| 258 | ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */ |
| 259 | ATA_PFLAG_EXTERNAL = (1 << 22), /* eSATA/external port */ |
| 260 | |
| 261 | /* struct ata_queued_cmd flags */ |
| 262 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
| 263 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
| 264 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
| 265 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
| 266 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
| 267 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
| 268 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
| 269 | |
| 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) */ |
| 273 | |
| 274 | /* host set flags */ |
| 275 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
| 276 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
| 277 | ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ |
| 278 | ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ |
| 279 | |
| 280 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
| 281 | |
| 282 | /* various lengths of time */ |
| 283 | ATA_TMOUT_BOOT = 30000, /* heuristic */ |
| 284 | ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */ |
| 285 | ATA_TMOUT_INTERNAL_QUICK = 5000, |
| 286 | ATA_TMOUT_MAX_PARK = 30000, |
| 287 | |
| 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. |
| 292 | */ |
| 293 | ATA_TMOUT_FF_WAIT_LONG = 2000, |
| 294 | ATA_TMOUT_FF_WAIT = 800, |
| 295 | |
| 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 | */ |
| 306 | ATA_WAIT_AFTER_RESET = 150, |
| 307 | |
| 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 | */ |
| 313 | ATA_TMOUT_PMP_SRST_WAIT = 5000, |
| 314 | |
| 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 | |
| 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 |
| 339 | * unsigned long bitmap |
| 340 | */ |
| 341 | ATA_NR_PIO_MODES = 7, |
| 342 | ATA_NR_MWDMA_MODES = 5, |
| 343 | ATA_NR_UDMA_MODES = 8, |
| 344 | |
| 345 | ATA_SHIFT_PIO = 0, |
| 346 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
| 347 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, |
| 348 | ATA_SHIFT_PRIO = 6, |
| 349 | |
| 350 | ATA_PRIO_HIGH = 2, |
| 351 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 352 | ATA_DMA_PAD_SZ = 4, |
| 353 | |
| 354 | /* ering size */ |
| 355 | ATA_ERING_SIZE = 32, |
| 356 | |
| 357 | /* return values for ->qc_defer */ |
| 358 | ATA_DEFER_LINK = 1, |
| 359 | ATA_DEFER_PORT = 2, |
| 360 | |
| 361 | /* desc_len for ata_eh_info and context */ |
| 362 | ATA_EH_DESC_LEN = 80, |
| 363 | |
| 364 | /* reset / recovery action types */ |
| 365 | ATA_EH_REVALIDATE = (1 << 0), |
| 366 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
| 367 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ |
| 368 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
| 369 | ATA_EH_ENABLE_LINK = (1 << 3), |
| 370 | ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */ |
| 371 | |
| 372 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK, |
| 373 | ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET | |
| 374 | ATA_EH_ENABLE_LINK, |
| 375 | |
| 376 | /* ata_eh_info->flags */ |
| 377 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
| 378 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
| 379 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
| 380 | ATA_EHI_NO_RECOVERY = (1 << 4), /* no recovery */ |
| 381 | |
| 382 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
| 383 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
| 384 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
| 385 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
| 386 | ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */ |
| 387 | |
| 388 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
| 389 | |
| 390 | /* mask of flags to transfer *to* the slave link */ |
| 391 | ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, |
| 392 | |
| 393 | /* max tries if error condition is still set after ->error_handler */ |
| 394 | ATA_EH_MAX_TRIES = 5, |
| 395 | |
| 396 | /* sometimes resuming a link requires several retries */ |
| 397 | ATA_LINK_RESUME_TRIES = 5, |
| 398 | |
| 399 | /* how hard are we gonna try to probe/recover devices */ |
| 400 | ATA_PROBE_MAX_TRIES = 3, |
| 401 | ATA_EH_DEV_TRIES = 3, |
| 402 | ATA_EH_PMP_TRIES = 5, |
| 403 | ATA_EH_PMP_LINK_TRIES = 3, |
| 404 | |
| 405 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
| 406 | |
| 407 | /* This should match the actual table size of |
| 408 | * ata_eh_cmd_timeout_table in libata-eh.c. |
| 409 | */ |
| 410 | ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, |
| 411 | |
| 412 | /* Horkage types. May be set by libata or controller on drives |
| 413 | (some horkage may be drive/controller pair dependent */ |
| 414 | |
| 415 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
| 416 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
| 417 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
| 418 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
| 419 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
| 420 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
| 421 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
| 422 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
| 423 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
| 424 | ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ |
| 425 | ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands |
| 426 | not multiple of 16 bytes */ |
| 427 | ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */ |
| 428 | ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */ |
| 429 | ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ |
| 430 | ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ |
| 431 | ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ |
| 432 | ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ |
| 433 | ATA_HORKAGE_ATAPI_DMADIR = (1 << 18), /* device requires dmadir */ |
| 434 | ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ |
| 435 | ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ |
| 436 | ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ |
| 437 | ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */ |
| 438 | ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ |
| 439 | ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ |
| 440 | ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ |
| 441 | |
| 442 | /* DMA mask for user DMA control: User visible values; DO NOT |
| 443 | renumber */ |
| 444 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ |
| 445 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ |
| 446 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ |
| 447 | |
| 448 | /* ATAPI command types */ |
| 449 | ATAPI_READ = 0, /* READs */ |
| 450 | ATAPI_WRITE = 1, /* WRITEs */ |
| 451 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ |
| 452 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
| 453 | ATAPI_MISC = 4, /* the rest */ |
| 454 | |
| 455 | /* Timing constants */ |
| 456 | ATA_TIMING_SETUP = (1 << 0), |
| 457 | ATA_TIMING_ACT8B = (1 << 1), |
| 458 | ATA_TIMING_REC8B = (1 << 2), |
| 459 | ATA_TIMING_CYC8B = (1 << 3), |
| 460 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 461 | ATA_TIMING_CYC8B, |
| 462 | ATA_TIMING_ACTIVE = (1 << 4), |
| 463 | ATA_TIMING_RECOVER = (1 << 5), |
| 464 | ATA_TIMING_DMACK_HOLD = (1 << 6), |
| 465 | ATA_TIMING_CYCLE = (1 << 7), |
| 466 | ATA_TIMING_UDMA = (1 << 8), |
| 467 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 468 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 469 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 470 | ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE | |
| 471 | ATA_TIMING_UDMA, |
| 472 | |
| 473 | /* ACPI constants */ |
| 474 | ATA_ACPI_FILTER_SETXFER = 1 << 0, |
| 475 | ATA_ACPI_FILTER_LOCK = 1 << 1, |
| 476 | ATA_ACPI_FILTER_DIPM = 1 << 2, |
| 477 | ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3, /* FPDMA non-zero offset */ |
| 478 | ATA_ACPI_FILTER_FPDMA_AA = 1 << 4, /* FPDMA auto activate */ |
| 479 | |
| 480 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | |
| 481 | ATA_ACPI_FILTER_LOCK | |
| 482 | ATA_ACPI_FILTER_DIPM, |
| 483 | }; |
| 484 | |
| 485 | enum ata_xfer_mask { |
| 486 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) |
| 487 | << ATA_SHIFT_PIO, |
| 488 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) |
| 489 | << ATA_SHIFT_MWDMA, |
| 490 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) |
| 491 | << ATA_SHIFT_UDMA, |
| 492 | }; |
| 493 | |
| 494 | enum hsm_task_states { |
| 495 | HSM_ST_IDLE, /* no command on going */ |
| 496 | HSM_ST_FIRST, /* (waiting the device to) |
| 497 | write CDB or first data block */ |
| 498 | HSM_ST, /* (waiting the device to) transfer data */ |
| 499 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
| 500 | HSM_ST_ERR, /* error */ |
| 501 | }; |
| 502 | |
| 503 | enum ata_completion_errors { |
| 504 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 505 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 506 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 507 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 508 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 509 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 510 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 511 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 512 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
| 513 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
| 514 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
| 515 | }; |
| 516 | |
| 517 | /* |
| 518 | * Link power management policy: If you alter this, you also need to |
| 519 | * alter libata-scsi.c (for the ascii descriptions) |
| 520 | */ |
| 521 | enum ata_lpm_policy { |
| 522 | ATA_LPM_UNKNOWN, |
| 523 | ATA_LPM_MAX_POWER, |
| 524 | ATA_LPM_MED_POWER, |
| 525 | ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */ |
| 526 | ATA_LPM_MIN_POWER, |
| 527 | }; |
| 528 | |
| 529 | enum ata_lpm_hints { |
| 530 | ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */ |
| 531 | ATA_LPM_HIPM = (1 << 1), /* may use HIPM */ |
| 532 | ATA_LPM_WAKE_ONLY = (1 << 2), /* only wake up link */ |
| 533 | }; |
| 534 | |
| 535 | /* forward declarations */ |
| 536 | struct scsi_device; |
| 537 | struct ata_port_operations; |
| 538 | struct ata_port; |
| 539 | struct ata_link; |
| 540 | struct ata_queued_cmd; |
| 541 | |
| 542 | /* typedefs */ |
| 543 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
| 544 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
| 545 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, |
| 546 | unsigned long deadline); |
| 547 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
| 548 | |
| 549 | extern struct device_attribute dev_attr_link_power_management_policy; |
| 550 | extern struct device_attribute dev_attr_unload_heads; |
| 551 | extern struct device_attribute dev_attr_ncq_prio_enable; |
| 552 | extern struct device_attribute dev_attr_em_message_type; |
| 553 | extern struct device_attribute dev_attr_em_message; |
| 554 | extern struct device_attribute dev_attr_sw_activity; |
| 555 | |
| 556 | enum sw_activity { |
| 557 | OFF, |
| 558 | BLINK_ON, |
| 559 | BLINK_OFF, |
| 560 | }; |
| 561 | |
| 562 | struct ata_taskfile { |
| 563 | unsigned long flags; /* ATA_TFLAG_xxx */ |
| 564 | u8 protocol; /* ATA_PROT_xxx */ |
| 565 | |
| 566 | u8 ctl; /* control reg */ |
| 567 | |
| 568 | u8 hob_feature; /* additional data */ |
| 569 | u8 hob_nsect; /* to support LBA48 */ |
| 570 | u8 hob_lbal; |
| 571 | u8 hob_lbam; |
| 572 | u8 hob_lbah; |
| 573 | |
| 574 | u8 feature; |
| 575 | u8 nsect; |
| 576 | u8 lbal; |
| 577 | u8 lbam; |
| 578 | u8 lbah; |
| 579 | |
| 580 | u8 device; |
| 581 | |
| 582 | u8 command; /* IO operation */ |
| 583 | |
| 584 | u32 auxiliary; /* auxiliary field */ |
| 585 | /* from SATA 3.1 and */ |
| 586 | /* ATA-8 ACS-3 */ |
| 587 | }; |
| 588 | |
| 589 | #ifdef CONFIG_ATA_SFF |
| 590 | struct ata_ioports { |
| 591 | void __iomem *cmd_addr; |
| 592 | void __iomem *data_addr; |
| 593 | void __iomem *error_addr; |
| 594 | void __iomem *feature_addr; |
| 595 | void __iomem *nsect_addr; |
| 596 | void __iomem *lbal_addr; |
| 597 | void __iomem *lbam_addr; |
| 598 | void __iomem *lbah_addr; |
| 599 | void __iomem *device_addr; |
| 600 | void __iomem *status_addr; |
| 601 | void __iomem *command_addr; |
| 602 | void __iomem *altstatus_addr; |
| 603 | void __iomem *ctl_addr; |
| 604 | #ifdef CONFIG_ATA_BMDMA |
| 605 | void __iomem *bmdma_addr; |
| 606 | #endif /* CONFIG_ATA_BMDMA */ |
| 607 | void __iomem *scr_addr; |
| 608 | }; |
| 609 | #endif /* CONFIG_ATA_SFF */ |
| 610 | |
| 611 | struct ata_host { |
| 612 | spinlock_t lock; |
| 613 | struct device *dev; |
| 614 | void __iomem * const *iomap; |
| 615 | unsigned int n_ports; |
| 616 | unsigned int n_tags; /* nr of NCQ tags */ |
| 617 | void *private_data; |
| 618 | struct ata_port_operations *ops; |
| 619 | unsigned long flags; |
| 620 | |
| 621 | struct mutex eh_mutex; |
| 622 | struct task_struct *eh_owner; |
| 623 | |
| 624 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
| 625 | struct ata_port *ports[0]; |
| 626 | }; |
| 627 | |
| 628 | struct ata_queued_cmd { |
| 629 | struct ata_port *ap; |
| 630 | struct ata_device *dev; |
| 631 | |
| 632 | struct scsi_cmnd *scsicmd; |
| 633 | void (*scsidone)(struct scsi_cmnd *); |
| 634 | |
| 635 | struct ata_taskfile tf; |
| 636 | u8 cdb[ATAPI_CDB_LEN]; |
| 637 | |
| 638 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 639 | unsigned int tag; |
| 640 | unsigned int n_elem; |
| 641 | unsigned int orig_n_elem; |
| 642 | |
| 643 | int dma_dir; |
| 644 | |
| 645 | unsigned int sect_size; |
| 646 | |
| 647 | unsigned int nbytes; |
| 648 | unsigned int extrabytes; |
| 649 | unsigned int curbytes; |
| 650 | |
| 651 | struct scatterlist sgent; |
| 652 | |
| 653 | struct scatterlist *sg; |
| 654 | |
| 655 | struct scatterlist *cursg; |
| 656 | unsigned int cursg_ofs; |
| 657 | |
| 658 | unsigned int err_mask; |
| 659 | struct ata_taskfile result_tf; |
| 660 | ata_qc_cb_t complete_fn; |
| 661 | |
| 662 | void *private_data; |
| 663 | void *lldd_task; |
| 664 | }; |
| 665 | |
| 666 | struct ata_port_stats { |
| 667 | unsigned long unhandled_irq; |
| 668 | unsigned long idle_irq; |
| 669 | unsigned long rw_reqbuf; |
| 670 | }; |
| 671 | |
| 672 | struct ata_ering_entry { |
| 673 | unsigned int eflags; |
| 674 | unsigned int err_mask; |
| 675 | u64 timestamp; |
| 676 | }; |
| 677 | |
| 678 | struct ata_ering { |
| 679 | int cursor; |
| 680 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
| 681 | }; |
| 682 | |
| 683 | struct ata_device { |
| 684 | struct ata_link *link; |
| 685 | unsigned int devno; /* 0 or 1 */ |
| 686 | unsigned int horkage; /* List of broken features */ |
| 687 | unsigned long flags; /* ATA_DFLAG_xxx */ |
| 688 | struct scsi_device *sdev; /* attached SCSI device */ |
| 689 | void *private_data; |
| 690 | #ifdef CONFIG_ATA_ACPI |
| 691 | union acpi_object *gtf_cache; |
| 692 | unsigned int gtf_filter; |
| 693 | #endif |
| 694 | #ifdef CONFIG_SATA_ZPODD |
| 695 | void *zpodd; |
| 696 | #endif |
| 697 | struct device tdev; |
| 698 | /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ |
| 699 | u64 n_sectors; /* size of device, if ATA */ |
| 700 | u64 n_native_sectors; /* native size, if ATA */ |
| 701 | unsigned int class; /* ATA_DEV_xxx */ |
| 702 | unsigned long unpark_deadline; |
| 703 | |
| 704 | u8 pio_mode; |
| 705 | u8 dma_mode; |
| 706 | u8 xfer_mode; |
| 707 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
| 708 | |
| 709 | unsigned int multi_count; /* sectors count for |
| 710 | READ/WRITE MULTIPLE */ |
| 711 | unsigned int max_sectors; /* per-device max sectors */ |
| 712 | unsigned int cdb_len; |
| 713 | |
| 714 | /* per-dev xfer mask */ |
| 715 | unsigned long pio_mask; |
| 716 | unsigned long mwdma_mask; |
| 717 | unsigned long udma_mask; |
| 718 | |
| 719 | /* for CHS addressing */ |
| 720 | u16 cylinders; /* Number of cylinders */ |
| 721 | u16 heads; /* Number of heads */ |
| 722 | u16 sectors; /* Number of sectors per track */ |
| 723 | |
| 724 | union { |
| 725 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
| 726 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ |
| 727 | } ____cacheline_aligned; |
| 728 | |
| 729 | /* DEVSLP Timing Variables from Identify Device Data Log */ |
| 730 | u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; |
| 731 | |
| 732 | /* NCQ send and receive log subcommand support */ |
| 733 | u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE]; |
| 734 | u8 ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE]; |
| 735 | |
| 736 | /* ZAC zone configuration */ |
| 737 | u32 zac_zoned_cap; |
| 738 | u32 zac_zones_optimal_open; |
| 739 | u32 zac_zones_optimal_nonseq; |
| 740 | u32 zac_zones_max_open; |
| 741 | |
| 742 | /* error history */ |
| 743 | int spdn_cnt; |
| 744 | /* ering is CLEAR_END, read comment above CLEAR_END */ |
| 745 | struct ata_ering ering; |
| 746 | }; |
| 747 | |
| 748 | /* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are |
| 749 | * cleared to zero on ata_dev_init(). |
| 750 | */ |
| 751 | #define ATA_DEVICE_CLEAR_BEGIN offsetof(struct ata_device, n_sectors) |
| 752 | #define ATA_DEVICE_CLEAR_END offsetof(struct ata_device, ering) |
| 753 | |
| 754 | struct ata_eh_info { |
| 755 | struct ata_device *dev; /* offending device */ |
| 756 | u32 serror; /* SError from LLDD */ |
| 757 | unsigned int err_mask; /* port-wide err_mask */ |
| 758 | unsigned int action; /* ATA_EH_* action mask */ |
| 759 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
| 760 | unsigned int flags; /* ATA_EHI_* flags */ |
| 761 | |
| 762 | unsigned int probe_mask; |
| 763 | |
| 764 | char desc[ATA_EH_DESC_LEN]; |
| 765 | int desc_len; |
| 766 | }; |
| 767 | |
| 768 | struct ata_eh_context { |
| 769 | struct ata_eh_info i; |
| 770 | int tries[ATA_MAX_DEVICES]; |
| 771 | int cmd_timeout_idx[ATA_MAX_DEVICES] |
| 772 | [ATA_EH_CMD_TIMEOUT_TABLE_SIZE]; |
| 773 | unsigned int classes[ATA_MAX_DEVICES]; |
| 774 | unsigned int did_probe_mask; |
| 775 | unsigned int unloaded_mask; |
| 776 | unsigned int saved_ncq_enabled; |
| 777 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; |
| 778 | /* timestamp for the last reset attempt or success */ |
| 779 | unsigned long last_reset; |
| 780 | }; |
| 781 | |
| 782 | struct ata_acpi_drive |
| 783 | { |
| 784 | u32 pio; |
| 785 | u32 dma; |
| 786 | } __packed; |
| 787 | |
| 788 | struct ata_acpi_gtm { |
| 789 | struct ata_acpi_drive drive[2]; |
| 790 | u32 flags; |
| 791 | } __packed; |
| 792 | |
| 793 | struct ata_link { |
| 794 | struct ata_port *ap; |
| 795 | int pmp; /* port multiplier port # */ |
| 796 | |
| 797 | struct device tdev; |
| 798 | unsigned int active_tag; /* active tag on this link */ |
| 799 | u32 sactive; /* active NCQ commands */ |
| 800 | |
| 801 | unsigned int flags; /* ATA_LFLAG_xxx */ |
| 802 | |
| 803 | u32 saved_scontrol; /* SControl on probe */ |
| 804 | unsigned int hw_sata_spd_limit; |
| 805 | unsigned int sata_spd_limit; |
| 806 | unsigned int sata_spd; /* current SATA PHY speed */ |
| 807 | enum ata_lpm_policy lpm_policy; |
| 808 | |
| 809 | /* record runtime error info, protected by host_set lock */ |
| 810 | struct ata_eh_info eh_info; |
| 811 | /* EH context */ |
| 812 | struct ata_eh_context eh_context; |
| 813 | |
| 814 | struct ata_device device[ATA_MAX_DEVICES]; |
| 815 | |
| 816 | unsigned long last_lpm_change; /* when last LPM change happened */ |
| 817 | }; |
| 818 | #define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag) |
| 819 | #define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0]) |
| 820 | |
| 821 | struct ata_port { |
| 822 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
| 823 | struct ata_port_operations *ops; |
| 824 | spinlock_t *lock; |
| 825 | /* Flags owned by the EH context. Only EH should touch these once the |
| 826 | port is active */ |
| 827 | unsigned long flags; /* ATA_FLAG_xxx */ |
| 828 | /* Flags that change dynamically, protected by ap->lock */ |
| 829 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
| 830 | unsigned int print_id; /* user visible unique port ID */ |
| 831 | unsigned int local_port_no; /* host local port num */ |
| 832 | unsigned int port_no; /* 0 based port no. inside the host */ |
| 833 | |
| 834 | #ifdef CONFIG_ATA_SFF |
| 835 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
| 836 | u8 ctl; /* cache of ATA control register */ |
| 837 | u8 last_ctl; /* Cache last written value */ |
| 838 | struct ata_link* sff_pio_task_link; /* link currently used */ |
| 839 | struct delayed_work sff_pio_task; |
| 840 | #ifdef CONFIG_ATA_BMDMA |
| 841 | struct ata_bmdma_prd *bmdma_prd; /* BMDMA SG list */ |
| 842 | dma_addr_t bmdma_prd_dma; /* and its DMA mapping */ |
| 843 | #endif /* CONFIG_ATA_BMDMA */ |
| 844 | #endif /* CONFIG_ATA_SFF */ |
| 845 | |
| 846 | unsigned int pio_mask; |
| 847 | unsigned int mwdma_mask; |
| 848 | unsigned int udma_mask; |
| 849 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
| 850 | |
| 851 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
| 852 | unsigned long sas_tag_allocated; /* for sas tag allocation only */ |
| 853 | unsigned int qc_active; |
| 854 | int nr_active_links; /* #links with active qcs */ |
| 855 | unsigned int sas_last_tag; /* track next tag hw expects */ |
| 856 | |
| 857 | struct ata_link link; /* host default link */ |
| 858 | struct ata_link *slave_link; /* see ata_slave_link_init() */ |
| 859 | |
| 860 | int nr_pmp_links; /* nr of available PMP links */ |
| 861 | struct ata_link *pmp_link; /* array of PMP links */ |
| 862 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
| 863 | |
| 864 | struct ata_port_stats stats; |
| 865 | struct ata_host *host; |
| 866 | struct device *dev; |
| 867 | struct device tdev; |
| 868 | |
| 869 | struct mutex scsi_scan_mutex; |
| 870 | struct delayed_work hotplug_task; |
| 871 | struct work_struct scsi_rescan_task; |
| 872 | |
| 873 | unsigned int hsm_task_state; |
| 874 | |
| 875 | u32 msg_enable; |
| 876 | struct list_head eh_done_q; |
| 877 | wait_queue_head_t eh_wait_q; |
| 878 | int eh_tries; |
| 879 | struct completion park_req_pending; |
| 880 | |
| 881 | pm_message_t pm_mesg; |
| 882 | enum ata_lpm_policy target_lpm_policy; |
| 883 | |
| 884 | struct timer_list fastdrain_timer; |
| 885 | unsigned long fastdrain_cnt; |
| 886 | |
| 887 | int em_message_type; |
| 888 | void *private_data; |
| 889 | |
| 890 | #ifdef CONFIG_ATA_ACPI |
| 891 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
| 892 | #endif |
| 893 | /* owned by EH */ |
| 894 | u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned; |
| 895 | }; |
| 896 | |
| 897 | /* The following initializer overrides a method to NULL whether one of |
| 898 | * its parent has the method defined or not. This is equivalent to |
| 899 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant |
| 900 | * expression and thus can't be used as an initializer. |
| 901 | */ |
| 902 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) |
| 903 | |
| 904 | struct ata_port_operations { |
| 905 | /* |
| 906 | * Command execution |
| 907 | */ |
| 908 | int (*qc_defer)(struct ata_queued_cmd *qc); |
| 909 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); |
| 910 | void (*qc_prep)(struct ata_queued_cmd *qc); |
| 911 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); |
| 912 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
| 913 | |
| 914 | /* |
| 915 | * Configuration and exception handling |
| 916 | */ |
| 917 | int (*cable_detect)(struct ata_port *ap); |
| 918 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); |
| 919 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); |
| 920 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); |
| 921 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); |
| 922 | unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); |
| 923 | |
| 924 | void (*dev_config)(struct ata_device *dev); |
| 925 | |
| 926 | void (*freeze)(struct ata_port *ap); |
| 927 | void (*thaw)(struct ata_port *ap); |
| 928 | ata_prereset_fn_t prereset; |
| 929 | ata_reset_fn_t softreset; |
| 930 | ata_reset_fn_t hardreset; |
| 931 | ata_postreset_fn_t postreset; |
| 932 | ata_prereset_fn_t pmp_prereset; |
| 933 | ata_reset_fn_t pmp_softreset; |
| 934 | ata_reset_fn_t pmp_hardreset; |
| 935 | ata_postreset_fn_t pmp_postreset; |
| 936 | void (*error_handler)(struct ata_port *ap); |
| 937 | void (*lost_interrupt)(struct ata_port *ap); |
| 938 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
| 939 | void (*sched_eh)(struct ata_port *ap); |
| 940 | void (*end_eh)(struct ata_port *ap); |
| 941 | |
| 942 | /* |
| 943 | * Optional features |
| 944 | */ |
| 945 | int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val); |
| 946 | int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val); |
| 947 | void (*pmp_attach)(struct ata_port *ap); |
| 948 | void (*pmp_detach)(struct ata_port *ap); |
| 949 | int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy, |
| 950 | unsigned hints); |
| 951 | |
| 952 | /* |
| 953 | * Start, stop, suspend and resume |
| 954 | */ |
| 955 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); |
| 956 | int (*port_resume)(struct ata_port *ap); |
| 957 | int (*port_start)(struct ata_port *ap); |
| 958 | void (*port_stop)(struct ata_port *ap); |
| 959 | void (*host_stop)(struct ata_host *host); |
| 960 | |
| 961 | #ifdef CONFIG_ATA_SFF |
| 962 | /* |
| 963 | * SFF / taskfile oriented ops |
| 964 | */ |
| 965 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
| 966 | void (*sff_set_devctl)(struct ata_port *ap, u8 ctl); |
| 967 | u8 (*sff_check_status)(struct ata_port *ap); |
| 968 | u8 (*sff_check_altstatus)(struct ata_port *ap); |
| 969 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); |
| 970 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); |
| 971 | void (*sff_exec_command)(struct ata_port *ap, |
| 972 | const struct ata_taskfile *tf); |
| 973 | unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc, |
| 974 | unsigned char *buf, unsigned int buflen, int rw); |
| 975 | void (*sff_irq_on)(struct ata_port *); |
| 976 | bool (*sff_irq_check)(struct ata_port *); |
| 977 | void (*sff_irq_clear)(struct ata_port *); |
| 978 | void (*sff_drain_fifo)(struct ata_queued_cmd *qc); |
| 979 | |
| 980 | #ifdef CONFIG_ATA_BMDMA |
| 981 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
| 982 | void (*bmdma_start)(struct ata_queued_cmd *qc); |
| 983 | void (*bmdma_stop)(struct ata_queued_cmd *qc); |
| 984 | u8 (*bmdma_status)(struct ata_port *ap); |
| 985 | #endif /* CONFIG_ATA_BMDMA */ |
| 986 | #endif /* CONFIG_ATA_SFF */ |
| 987 | |
| 988 | ssize_t (*em_show)(struct ata_port *ap, char *buf); |
| 989 | ssize_t (*em_store)(struct ata_port *ap, const char *message, |
| 990 | size_t size); |
| 991 | ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf); |
| 992 | ssize_t (*sw_activity_store)(struct ata_device *dev, |
| 993 | enum sw_activity val); |
| 994 | ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state, |
| 995 | ssize_t size); |
| 996 | |
| 997 | /* |
| 998 | * Obsolete |
| 999 | */ |
| 1000 | void (*phy_reset)(struct ata_port *ap); |
| 1001 | void (*eng_timeout)(struct ata_port *ap); |
| 1002 | |
| 1003 | /* |
| 1004 | * ->inherits must be the last field and all the preceding |
| 1005 | * fields must be pointers. |
| 1006 | */ |
| 1007 | const struct ata_port_operations *inherits; |
| 1008 | }; |
| 1009 | |
| 1010 | struct ata_port_info { |
| 1011 | unsigned long flags; |
| 1012 | unsigned long link_flags; |
| 1013 | unsigned long pio_mask; |
| 1014 | unsigned long mwdma_mask; |
| 1015 | unsigned long udma_mask; |
| 1016 | struct ata_port_operations *port_ops; |
| 1017 | void *private_data; |
| 1018 | }; |
| 1019 | |
| 1020 | struct ata_timing { |
| 1021 | unsigned short mode; /* ATA mode */ |
| 1022 | unsigned short setup; /* t1 */ |
| 1023 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 1024 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 1025 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 1026 | unsigned short active; /* t2 or tD */ |
| 1027 | unsigned short recover; /* t2i or tK */ |
| 1028 | unsigned short dmack_hold; /* tj */ |
| 1029 | unsigned short cycle; /* t0 */ |
| 1030 | unsigned short udma; /* t2CYCTYP/2 */ |
| 1031 | }; |
| 1032 | |
| 1033 | /* |
| 1034 | * Core layer - drivers/ata/libata-core.c |
| 1035 | */ |
| 1036 | extern const unsigned long sata_deb_timing_normal[]; |
| 1037 | extern const unsigned long sata_deb_timing_hotplug[]; |
| 1038 | extern const unsigned long sata_deb_timing_long[]; |
| 1039 | |
| 1040 | extern struct ata_port_operations ata_dummy_port_ops; |
| 1041 | extern const struct ata_port_info ata_dummy_port_info; |
| 1042 | |
| 1043 | static inline bool ata_is_atapi(u8 prot) |
| 1044 | { |
| 1045 | return prot & ATA_PROT_FLAG_ATAPI; |
| 1046 | } |
| 1047 | |
| 1048 | static inline bool ata_is_pio(u8 prot) |
| 1049 | { |
| 1050 | return prot & ATA_PROT_FLAG_PIO; |
| 1051 | } |
| 1052 | |
| 1053 | static inline bool ata_is_dma(u8 prot) |
| 1054 | { |
| 1055 | return prot & ATA_PROT_FLAG_DMA; |
| 1056 | } |
| 1057 | |
| 1058 | static inline bool ata_is_ncq(u8 prot) |
| 1059 | { |
| 1060 | return prot & ATA_PROT_FLAG_NCQ; |
| 1061 | } |
| 1062 | |
| 1063 | static inline bool ata_is_data(u8 prot) |
| 1064 | { |
| 1065 | return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA); |
| 1066 | } |
| 1067 | |
| 1068 | static inline int is_multi_taskfile(struct ata_taskfile *tf) |
| 1069 | { |
| 1070 | return (tf->command == ATA_CMD_READ_MULTI) || |
| 1071 | (tf->command == ATA_CMD_WRITE_MULTI) || |
| 1072 | (tf->command == ATA_CMD_READ_MULTI_EXT) || |
| 1073 | (tf->command == ATA_CMD_WRITE_MULTI_EXT) || |
| 1074 | (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); |
| 1075 | } |
| 1076 | |
| 1077 | static inline const unsigned long * |
| 1078 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
| 1079 | { |
| 1080 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
| 1081 | return sata_deb_timing_hotplug; |
| 1082 | else |
| 1083 | return sata_deb_timing_normal; |
| 1084 | } |
| 1085 | |
| 1086 | static inline int ata_port_is_dummy(struct ata_port *ap) |
| 1087 | { |
| 1088 | return ap->ops == &ata_dummy_port_ops; |
| 1089 | } |
| 1090 | |
| 1091 | extern int sata_set_spd(struct ata_link *link); |
| 1092 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
| 1093 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
| 1094 | int (*check_ready)(struct ata_link *link)); |
| 1095 | extern int sata_link_debounce(struct ata_link *link, |
| 1096 | const unsigned long *params, unsigned long deadline); |
| 1097 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 1098 | unsigned long deadline); |
| 1099 | extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, |
| 1100 | bool spm_wakeup); |
| 1101 | extern int sata_link_hardreset(struct ata_link *link, |
| 1102 | const unsigned long *timing, unsigned long deadline, |
| 1103 | bool *online, int (*check_ready)(struct ata_link *)); |
| 1104 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
| 1105 | unsigned long deadline); |
| 1106 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
| 1107 | |
| 1108 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
| 1109 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 1110 | const struct ata_port_info * const * ppi, int n_ports); |
| 1111 | extern int ata_slave_link_init(struct ata_port *ap); |
| 1112 | extern int ata_host_start(struct ata_host *host); |
| 1113 | extern int ata_host_register(struct ata_host *host, |
| 1114 | struct scsi_host_template *sht); |
| 1115 | extern int ata_host_activate(struct ata_host *host, int irq, |
| 1116 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 1117 | struct scsi_host_template *sht); |
| 1118 | extern void ata_host_detach(struct ata_host *host); |
| 1119 | extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); |
| 1120 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
| 1121 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 1122 | extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
| 1123 | extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, |
| 1124 | int cmd, void __user *arg); |
| 1125 | extern void ata_sas_port_destroy(struct ata_port *); |
| 1126 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
| 1127 | struct ata_port_info *, struct Scsi_Host *); |
| 1128 | extern void ata_sas_async_probe(struct ata_port *ap); |
| 1129 | extern int ata_sas_sync_probe(struct ata_port *ap); |
| 1130 | extern int ata_sas_port_init(struct ata_port *); |
| 1131 | extern int ata_sas_port_start(struct ata_port *ap); |
| 1132 | extern void ata_sas_port_stop(struct ata_port *ap); |
| 1133 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); |
| 1134 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); |
| 1135 | extern enum blk_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); |
| 1136 | extern int sata_scr_valid(struct ata_link *link); |
| 1137 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); |
| 1138 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); |
| 1139 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); |
| 1140 | extern bool ata_link_online(struct ata_link *link); |
| 1141 | extern bool ata_link_offline(struct ata_link *link); |
| 1142 | #ifdef CONFIG_PM |
| 1143 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
| 1144 | extern void ata_host_resume(struct ata_host *host); |
| 1145 | extern void ata_sas_port_suspend(struct ata_port *ap); |
| 1146 | extern void ata_sas_port_resume(struct ata_port *ap); |
| 1147 | #else |
| 1148 | static inline void ata_sas_port_suspend(struct ata_port *ap) |
| 1149 | { |
| 1150 | } |
| 1151 | static inline void ata_sas_port_resume(struct ata_port *ap) |
| 1152 | { |
| 1153 | } |
| 1154 | #endif |
| 1155 | extern int ata_ratelimit(void); |
| 1156 | extern void ata_msleep(struct ata_port *ap, unsigned int msecs); |
| 1157 | extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask, |
| 1158 | u32 val, unsigned long interval, unsigned long timeout); |
| 1159 | extern int atapi_cmd_type(u8 opcode); |
| 1160 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
| 1161 | u8 pmp, int is_cmd, u8 *fis); |
| 1162 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
| 1163 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
| 1164 | unsigned long mwdma_mask, unsigned long udma_mask); |
| 1165 | extern void ata_unpack_xfermask(unsigned long xfer_mask, |
| 1166 | unsigned long *pio_mask, unsigned long *mwdma_mask, |
| 1167 | unsigned long *udma_mask); |
| 1168 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); |
| 1169 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); |
| 1170 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); |
| 1171 | extern const char *ata_mode_string(unsigned long xfer_mask); |
| 1172 | extern unsigned long ata_id_xfermask(const u16 *id); |
| 1173 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
| 1174 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
| 1175 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 1176 | unsigned int n_elem); |
| 1177 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
| 1178 | extern void ata_dev_disable(struct ata_device *adev); |
| 1179 | extern void ata_id_string(const u16 *id, unsigned char *s, |
| 1180 | unsigned int ofs, unsigned int len); |
| 1181 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
| 1182 | unsigned int ofs, unsigned int len); |
| 1183 | extern unsigned int ata_do_dev_read_id(struct ata_device *dev, |
| 1184 | struct ata_taskfile *tf, u16 *id); |
| 1185 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
| 1186 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
| 1187 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); |
| 1188 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 1189 | struct block_device *bdev, |
| 1190 | sector_t capacity, int geom[]); |
| 1191 | extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev); |
| 1192 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
| 1193 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
| 1194 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
| 1195 | int queue_depth); |
| 1196 | extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
| 1197 | int queue_depth); |
| 1198 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
| 1199 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
| 1200 | extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); |
| 1201 | extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); |
| 1202 | extern bool sata_lpm_ignore_phy_events(struct ata_link *link); |
| 1203 | |
| 1204 | extern int ata_cable_40wire(struct ata_port *ap); |
| 1205 | extern int ata_cable_80wire(struct ata_port *ap); |
| 1206 | extern int ata_cable_sata(struct ata_port *ap); |
| 1207 | extern int ata_cable_ignore(struct ata_port *ap); |
| 1208 | extern int ata_cable_unknown(struct ata_port *ap); |
| 1209 | |
| 1210 | /* Timing helpers */ |
| 1211 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
| 1212 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
| 1213 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 1214 | struct ata_timing *, int, int); |
| 1215 | extern void ata_timing_merge(const struct ata_timing *, |
| 1216 | const struct ata_timing *, struct ata_timing *, |
| 1217 | unsigned int); |
| 1218 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
| 1219 | |
| 1220 | /* PCI */ |
| 1221 | #ifdef CONFIG_PCI |
| 1222 | struct pci_dev; |
| 1223 | |
| 1224 | struct pci_bits { |
| 1225 | unsigned int reg; /* PCI config register to read */ |
| 1226 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 1227 | unsigned long mask; |
| 1228 | unsigned long val; |
| 1229 | }; |
| 1230 | |
| 1231 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
| 1232 | extern void ata_pci_remove_one(struct pci_dev *pdev); |
| 1233 | |
| 1234 | #ifdef CONFIG_PM |
| 1235 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 1236 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
| 1237 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 1238 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
| 1239 | #endif /* CONFIG_PM */ |
| 1240 | #endif /* CONFIG_PCI */ |
| 1241 | |
| 1242 | struct platform_device; |
| 1243 | |
| 1244 | extern int ata_platform_remove_one(struct platform_device *pdev); |
| 1245 | |
| 1246 | /* |
| 1247 | * ACPI - drivers/ata/libata-acpi.c |
| 1248 | */ |
| 1249 | #ifdef CONFIG_ATA_ACPI |
| 1250 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
| 1251 | { |
| 1252 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) |
| 1253 | return &ap->__acpi_init_gtm; |
| 1254 | return NULL; |
| 1255 | } |
| 1256 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
| 1257 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); |
| 1258 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 1259 | const struct ata_acpi_gtm *gtm); |
| 1260 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
| 1261 | #else |
| 1262 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
| 1263 | { |
| 1264 | return NULL; |
| 1265 | } |
| 1266 | |
| 1267 | static inline int ata_acpi_stm(const struct ata_port *ap, |
| 1268 | struct ata_acpi_gtm *stm) |
| 1269 | { |
| 1270 | return -ENOSYS; |
| 1271 | } |
| 1272 | |
| 1273 | static inline int ata_acpi_gtm(const struct ata_port *ap, |
| 1274 | struct ata_acpi_gtm *stm) |
| 1275 | { |
| 1276 | return -ENOSYS; |
| 1277 | } |
| 1278 | |
| 1279 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 1280 | const struct ata_acpi_gtm *gtm) |
| 1281 | { |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
| 1285 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, |
| 1286 | const struct ata_acpi_gtm *gtm) |
| 1287 | { |
| 1288 | return 0; |
| 1289 | } |
| 1290 | #endif |
| 1291 | |
| 1292 | /* |
| 1293 | * EH - drivers/ata/libata-eh.c |
| 1294 | */ |
| 1295 | extern void ata_port_schedule_eh(struct ata_port *ap); |
| 1296 | extern void ata_port_wait_eh(struct ata_port *ap); |
| 1297 | extern int ata_link_abort(struct ata_link *link); |
| 1298 | extern int ata_port_abort(struct ata_port *ap); |
| 1299 | extern int ata_port_freeze(struct ata_port *ap); |
| 1300 | extern int sata_async_notification(struct ata_port *ap); |
| 1301 | |
| 1302 | extern void ata_eh_freeze_port(struct ata_port *ap); |
| 1303 | extern void ata_eh_thaw_port(struct ata_port *ap); |
| 1304 | |
| 1305 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 1306 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
| 1307 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
| 1308 | |
| 1309 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
| 1310 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 1311 | ata_postreset_fn_t postreset); |
| 1312 | extern void ata_std_error_handler(struct ata_port *ap); |
| 1313 | extern void ata_std_sched_eh(struct ata_port *ap); |
| 1314 | extern void ata_std_end_eh(struct ata_port *ap); |
| 1315 | extern int ata_link_nr_enabled(struct ata_link *link); |
| 1316 | |
| 1317 | /* |
| 1318 | * Base operations to inherit from and initializers for sht |
| 1319 | * |
| 1320 | * Operations |
| 1321 | * |
| 1322 | * base : Common to all libata drivers. |
| 1323 | * sata : SATA controllers w/ native interface. |
| 1324 | * pmp : SATA controllers w/ PMP support. |
| 1325 | * sff : SFF ATA controllers w/o BMDMA support. |
| 1326 | * bmdma : SFF ATA controllers w/ BMDMA support. |
| 1327 | * |
| 1328 | * sht initializers |
| 1329 | * |
| 1330 | * BASE : Common to all libata drivers. The user must set |
| 1331 | * sg_tablesize and dma_boundary. |
| 1332 | * PIO : SFF ATA controllers w/ only PIO support. |
| 1333 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and |
| 1334 | * dma_boundary are set to BMDMA limits. |
| 1335 | * NCQ : SATA controllers supporting NCQ. The user must set |
| 1336 | * sg_tablesize, dma_boundary and can_queue. |
| 1337 | */ |
| 1338 | extern const struct ata_port_operations ata_base_port_ops; |
| 1339 | extern const struct ata_port_operations sata_port_ops; |
| 1340 | extern struct device_attribute *ata_common_sdev_attrs[]; |
| 1341 | |
| 1342 | /* |
| 1343 | * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated |
| 1344 | * by the edge drivers. Because the 'module' field of sht must be the |
| 1345 | * edge driver's module reference, otherwise the driver can be unloaded |
| 1346 | * even if the scsi_device is being accessed. |
| 1347 | */ |
| 1348 | #define ATA_BASE_SHT(drv_name) \ |
| 1349 | .module = THIS_MODULE, \ |
| 1350 | .name = drv_name, \ |
| 1351 | .ioctl = ata_scsi_ioctl, \ |
| 1352 | .queuecommand = ata_scsi_queuecmd, \ |
| 1353 | .can_queue = ATA_DEF_QUEUE, \ |
| 1354 | .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
| 1355 | .this_id = ATA_SHT_THIS_ID, \ |
| 1356 | .emulated = ATA_SHT_EMULATED, \ |
| 1357 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ |
| 1358 | .proc_name = drv_name, \ |
| 1359 | .slave_configure = ata_scsi_slave_config, \ |
| 1360 | .slave_destroy = ata_scsi_slave_destroy, \ |
| 1361 | .eh_timed_out = ata_scsi_timed_out, \ |
| 1362 | .bios_param = ata_std_bios_param, \ |
| 1363 | .unlock_native_capacity = ata_scsi_unlock_native_capacity, \ |
| 1364 | .sdev_attrs = ata_common_sdev_attrs |
| 1365 | |
| 1366 | #define ATA_NCQ_SHT(drv_name) \ |
| 1367 | ATA_BASE_SHT(drv_name), \ |
| 1368 | .change_queue_depth = ata_scsi_change_queue_depth |
| 1369 | |
| 1370 | /* |
| 1371 | * PMP helpers |
| 1372 | */ |
| 1373 | #ifdef CONFIG_SATA_PMP |
| 1374 | static inline bool sata_pmp_supported(struct ata_port *ap) |
| 1375 | { |
| 1376 | return ap->flags & ATA_FLAG_PMP; |
| 1377 | } |
| 1378 | |
| 1379 | static inline bool sata_pmp_attached(struct ata_port *ap) |
| 1380 | { |
| 1381 | return ap->nr_pmp_links != 0; |
| 1382 | } |
| 1383 | |
| 1384 | static inline bool ata_is_host_link(const struct ata_link *link) |
| 1385 | { |
| 1386 | return link == &link->ap->link || link == link->ap->slave_link; |
| 1387 | } |
| 1388 | #else /* CONFIG_SATA_PMP */ |
| 1389 | static inline bool sata_pmp_supported(struct ata_port *ap) |
| 1390 | { |
| 1391 | return false; |
| 1392 | } |
| 1393 | |
| 1394 | static inline bool sata_pmp_attached(struct ata_port *ap) |
| 1395 | { |
| 1396 | return false; |
| 1397 | } |
| 1398 | |
| 1399 | static inline bool ata_is_host_link(const struct ata_link *link) |
| 1400 | { |
| 1401 | return 1; |
| 1402 | } |
| 1403 | #endif /* CONFIG_SATA_PMP */ |
| 1404 | |
| 1405 | static inline int sata_srst_pmp(struct ata_link *link) |
| 1406 | { |
| 1407 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) |
| 1408 | return SATA_PMP_CTRL_PORT; |
| 1409 | return link->pmp; |
| 1410 | } |
| 1411 | |
| 1412 | /* |
| 1413 | * printk helpers |
| 1414 | */ |
| 1415 | __printf(3, 4) |
| 1416 | void ata_port_printk(const struct ata_port *ap, const char *level, |
| 1417 | const char *fmt, ...); |
| 1418 | __printf(3, 4) |
| 1419 | void ata_link_printk(const struct ata_link *link, const char *level, |
| 1420 | const char *fmt, ...); |
| 1421 | __printf(3, 4) |
| 1422 | void ata_dev_printk(const struct ata_device *dev, const char *level, |
| 1423 | const char *fmt, ...); |
| 1424 | |
| 1425 | #define ata_port_err(ap, fmt, ...) \ |
| 1426 | ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__) |
| 1427 | #define ata_port_warn(ap, fmt, ...) \ |
| 1428 | ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__) |
| 1429 | #define ata_port_notice(ap, fmt, ...) \ |
| 1430 | ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__) |
| 1431 | #define ata_port_info(ap, fmt, ...) \ |
| 1432 | ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__) |
| 1433 | #define ata_port_dbg(ap, fmt, ...) \ |
| 1434 | ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__) |
| 1435 | |
| 1436 | #define ata_link_err(link, fmt, ...) \ |
| 1437 | ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__) |
| 1438 | #define ata_link_warn(link, fmt, ...) \ |
| 1439 | ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__) |
| 1440 | #define ata_link_notice(link, fmt, ...) \ |
| 1441 | ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__) |
| 1442 | #define ata_link_info(link, fmt, ...) \ |
| 1443 | ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__) |
| 1444 | #define ata_link_dbg(link, fmt, ...) \ |
| 1445 | ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__) |
| 1446 | |
| 1447 | #define ata_dev_err(dev, fmt, ...) \ |
| 1448 | ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__) |
| 1449 | #define ata_dev_warn(dev, fmt, ...) \ |
| 1450 | ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__) |
| 1451 | #define ata_dev_notice(dev, fmt, ...) \ |
| 1452 | ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__) |
| 1453 | #define ata_dev_info(dev, fmt, ...) \ |
| 1454 | ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__) |
| 1455 | #define ata_dev_dbg(dev, fmt, ...) \ |
| 1456 | ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__) |
| 1457 | |
| 1458 | void ata_print_version(const struct device *dev, const char *version); |
| 1459 | |
| 1460 | /* |
| 1461 | * ata_eh_info helpers |
| 1462 | */ |
| 1463 | extern __printf(2, 3) |
| 1464 | void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
| 1465 | extern __printf(2, 3) |
| 1466 | void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
| 1467 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
| 1468 | |
| 1469 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
| 1470 | { |
| 1471 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
| 1472 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
| 1473 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
| 1474 | ehi->err_mask |= AC_ERR_ATA_BUS; |
| 1475 | } |
| 1476 | |
| 1477 | /* |
| 1478 | * port description helpers |
| 1479 | */ |
| 1480 | extern __printf(2, 3) |
| 1481 | void ata_port_desc(struct ata_port *ap, const char *fmt, ...); |
| 1482 | #ifdef CONFIG_PCI |
| 1483 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, |
| 1484 | const char *name); |
| 1485 | #endif |
| 1486 | |
| 1487 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 1488 | { |
| 1489 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 1490 | } |
| 1491 | |
| 1492 | static inline unsigned int ata_tag_internal(unsigned int tag) |
| 1493 | { |
| 1494 | return tag == ATA_TAG_INTERNAL; |
| 1495 | } |
| 1496 | |
| 1497 | /* |
| 1498 | * device helpers |
| 1499 | */ |
| 1500 | static inline unsigned int ata_class_enabled(unsigned int class) |
| 1501 | { |
| 1502 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
| 1503 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB || |
| 1504 | class == ATA_DEV_ZAC; |
| 1505 | } |
| 1506 | |
| 1507 | static inline unsigned int ata_class_disabled(unsigned int class) |
| 1508 | { |
| 1509 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
| 1510 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP || |
| 1511 | class == ATA_DEV_ZAC_UNSUP; |
| 1512 | } |
| 1513 | |
| 1514 | static inline unsigned int ata_class_absent(unsigned int class) |
| 1515 | { |
| 1516 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
| 1517 | } |
| 1518 | |
| 1519 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
| 1520 | { |
| 1521 | return ata_class_enabled(dev->class); |
| 1522 | } |
| 1523 | |
| 1524 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
| 1525 | { |
| 1526 | return ata_class_disabled(dev->class); |
| 1527 | } |
| 1528 | |
| 1529 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
| 1530 | { |
| 1531 | return ata_class_absent(dev->class); |
| 1532 | } |
| 1533 | |
| 1534 | /* |
| 1535 | * link helpers |
| 1536 | */ |
| 1537 | static inline int ata_link_max_devices(const struct ata_link *link) |
| 1538 | { |
| 1539 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
| 1540 | return 2; |
| 1541 | return 1; |
| 1542 | } |
| 1543 | |
| 1544 | static inline int ata_link_active(struct ata_link *link) |
| 1545 | { |
| 1546 | return ata_tag_valid(link->active_tag) || link->sactive; |
| 1547 | } |
| 1548 | |
| 1549 | /* |
| 1550 | * Iterators |
| 1551 | * |
| 1552 | * ATA_LITER_* constants are used to select link iteration mode and |
| 1553 | * ATA_DITER_* device iteration mode. |
| 1554 | * |
| 1555 | * For a custom iteration directly using ata_{link|dev}_next(), if |
| 1556 | * @link or @dev, respectively, is NULL, the first element is |
| 1557 | * returned. @dev and @link can be any valid device or link and the |
| 1558 | * next element according to the iteration mode will be returned. |
| 1559 | * After the last element, NULL is returned. |
| 1560 | */ |
| 1561 | enum ata_link_iter_mode { |
| 1562 | ATA_LITER_EDGE, /* if present, PMP links only; otherwise, |
| 1563 | * host link. no slave link */ |
| 1564 | ATA_LITER_HOST_FIRST, /* host link followed by PMP or slave links */ |
| 1565 | ATA_LITER_PMP_FIRST, /* PMP links followed by host link, |
| 1566 | * slave link still comes after host link */ |
| 1567 | }; |
| 1568 | |
| 1569 | enum ata_dev_iter_mode { |
| 1570 | ATA_DITER_ENABLED, |
| 1571 | ATA_DITER_ENABLED_REVERSE, |
| 1572 | ATA_DITER_ALL, |
| 1573 | ATA_DITER_ALL_REVERSE, |
| 1574 | }; |
| 1575 | |
| 1576 | extern struct ata_link *ata_link_next(struct ata_link *link, |
| 1577 | struct ata_port *ap, |
| 1578 | enum ata_link_iter_mode mode); |
| 1579 | |
| 1580 | extern struct ata_device *ata_dev_next(struct ata_device *dev, |
| 1581 | struct ata_link *link, |
| 1582 | enum ata_dev_iter_mode mode); |
| 1583 | |
| 1584 | /* |
| 1585 | * Shortcut notation for iterations |
| 1586 | * |
| 1587 | * ata_for_each_link() iterates over each link of @ap according to |
| 1588 | * @mode. @link points to the current link in the loop. @link is |
| 1589 | * NULL after loop termination. ata_for_each_dev() works the same way |
| 1590 | * except that it iterates over each device of @link. |
| 1591 | * |
| 1592 | * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be |
| 1593 | * specified when using the following shorthand notations. Only the |
| 1594 | * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be |
| 1595 | * specified. This not only increases brevity but also makes it |
| 1596 | * impossible to use ATA_LITER_* for device iteration or vice-versa. |
| 1597 | */ |
| 1598 | #define ata_for_each_link(link, ap, mode) \ |
| 1599 | for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \ |
| 1600 | (link) = ata_link_next((link), (ap), ATA_LITER_##mode)) |
| 1601 | |
| 1602 | #define ata_for_each_dev(dev, link, mode) \ |
| 1603 | for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \ |
| 1604 | (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode)) |
| 1605 | |
| 1606 | /** |
| 1607 | * ata_ncq_enabled - Test whether NCQ is enabled |
| 1608 | * @dev: ATA device to test for |
| 1609 | * |
| 1610 | * LOCKING: |
| 1611 | * spin_lock_irqsave(host lock) |
| 1612 | * |
| 1613 | * RETURNS: |
| 1614 | * 1 if NCQ is enabled for @dev, 0 otherwise. |
| 1615 | */ |
| 1616 | static inline int ata_ncq_enabled(struct ata_device *dev) |
| 1617 | { |
| 1618 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
| 1619 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
| 1620 | } |
| 1621 | |
| 1622 | static inline bool ata_fpdma_dsm_supported(struct ata_device *dev) |
| 1623 | { |
| 1624 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
| 1625 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] & |
| 1626 | ATA_LOG_NCQ_SEND_RECV_DSM_TRIM); |
| 1627 | } |
| 1628 | |
| 1629 | static inline bool ata_fpdma_read_log_supported(struct ata_device *dev) |
| 1630 | { |
| 1631 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
| 1632 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] & |
| 1633 | ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED); |
| 1634 | } |
| 1635 | |
| 1636 | static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev) |
| 1637 | { |
| 1638 | return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) && |
| 1639 | (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] & |
| 1640 | ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED); |
| 1641 | } |
| 1642 | |
| 1643 | static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev) |
| 1644 | { |
| 1645 | return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] & |
| 1646 | ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT); |
| 1647 | } |
| 1648 | |
| 1649 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
| 1650 | { |
| 1651 | qc->tf.ctl |= ATA_NIEN; |
| 1652 | } |
| 1653 | |
| 1654 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
| 1655 | unsigned int tag) |
| 1656 | { |
| 1657 | if (likely(ata_tag_valid(tag))) |
| 1658 | return &ap->qcmd[tag]; |
| 1659 | return NULL; |
| 1660 | } |
| 1661 | |
| 1662 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
| 1663 | unsigned int tag) |
| 1664 | { |
| 1665 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); |
| 1666 | |
| 1667 | if (unlikely(!qc) || !ap->ops->error_handler) |
| 1668 | return qc; |
| 1669 | |
| 1670 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | |
| 1671 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) |
| 1672 | return qc; |
| 1673 | |
| 1674 | return NULL; |
| 1675 | } |
| 1676 | |
| 1677 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
| 1678 | { |
| 1679 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); |
| 1680 | } |
| 1681 | |
| 1682 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
| 1683 | { |
| 1684 | memset(tf, 0, sizeof(*tf)); |
| 1685 | |
| 1686 | #ifdef CONFIG_ATA_SFF |
| 1687 | tf->ctl = dev->link->ap->ctl; |
| 1688 | #else |
| 1689 | tf->ctl = ATA_DEVCTL_OBS; |
| 1690 | #endif |
| 1691 | if (dev->devno == 0) |
| 1692 | tf->device = ATA_DEVICE_OBS; |
| 1693 | else |
| 1694 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 1695 | } |
| 1696 | |
| 1697 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 1698 | { |
| 1699 | qc->dma_dir = DMA_NONE; |
| 1700 | qc->sg = NULL; |
| 1701 | qc->flags = 0; |
| 1702 | qc->cursg = NULL; |
| 1703 | qc->cursg_ofs = 0; |
| 1704 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
| 1705 | qc->n_elem = 0; |
| 1706 | qc->err_mask = 0; |
| 1707 | qc->sect_size = ATA_SECT_SIZE; |
| 1708 | |
| 1709 | ata_tf_init(qc->dev, &qc->tf); |
| 1710 | |
| 1711 | /* init result_tf such that it indicates normal completion */ |
| 1712 | qc->result_tf.command = ATA_DRDY; |
| 1713 | qc->result_tf.feature = 0; |
| 1714 | } |
| 1715 | |
| 1716 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
| 1717 | { |
| 1718 | return ata_id_wcache_enabled(dev->id) || |
| 1719 | ata_id_has_flush(dev->id) || |
| 1720 | ata_id_has_flush_ext(dev->id); |
| 1721 | } |
| 1722 | |
| 1723 | static inline unsigned int ac_err_mask(u8 status) |
| 1724 | { |
| 1725 | if (status & (ATA_BUSY | ATA_DRQ)) |
| 1726 | return AC_ERR_HSM; |
| 1727 | if (status & (ATA_ERR | ATA_DF)) |
| 1728 | return AC_ERR_DEV; |
| 1729 | return 0; |
| 1730 | } |
| 1731 | |
| 1732 | static inline unsigned int __ac_err_mask(u8 status) |
| 1733 | { |
| 1734 | unsigned int mask = ac_err_mask(status); |
| 1735 | if (mask == 0) |
| 1736 | return AC_ERR_OTHER; |
| 1737 | return mask; |
| 1738 | } |
| 1739 | |
| 1740 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
| 1741 | { |
| 1742 | return *(struct ata_port **)&host->hostdata[0]; |
| 1743 | } |
| 1744 | |
| 1745 | static inline int ata_check_ready(u8 status) |
| 1746 | { |
| 1747 | if (!(status & ATA_BUSY)) |
| 1748 | return 1; |
| 1749 | |
| 1750 | /* 0xff indicates either no device or device not ready */ |
| 1751 | if (status == 0xff) |
| 1752 | return -ENODEV; |
| 1753 | |
| 1754 | return 0; |
| 1755 | } |
| 1756 | |
| 1757 | static inline unsigned long ata_deadline(unsigned long from_jiffies, |
| 1758 | unsigned long timeout_msecs) |
| 1759 | { |
| 1760 | return from_jiffies + msecs_to_jiffies(timeout_msecs); |
| 1761 | } |
| 1762 | |
| 1763 | /* Don't open code these in drivers as there are traps. Firstly the range may |
| 1764 | change in future hardware and specs, secondly 0xFF means 'no DMA' but is |
| 1765 | > UDMA_0. Dyma ddreigiau */ |
| 1766 | |
| 1767 | static inline int ata_using_mwdma(struct ata_device *adev) |
| 1768 | { |
| 1769 | if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) |
| 1770 | return 1; |
| 1771 | return 0; |
| 1772 | } |
| 1773 | |
| 1774 | static inline int ata_using_udma(struct ata_device *adev) |
| 1775 | { |
| 1776 | if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) |
| 1777 | return 1; |
| 1778 | return 0; |
| 1779 | } |
| 1780 | |
| 1781 | static inline int ata_dma_enabled(struct ata_device *adev) |
| 1782 | { |
| 1783 | return (adev->dma_mode == 0xFF ? 0 : 1); |
| 1784 | } |
| 1785 | |
| 1786 | /************************************************************************** |
| 1787 | * PMP - drivers/ata/libata-pmp.c |
| 1788 | */ |
| 1789 | #ifdef CONFIG_SATA_PMP |
| 1790 | |
| 1791 | extern const struct ata_port_operations sata_pmp_port_ops; |
| 1792 | |
| 1793 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
| 1794 | extern void sata_pmp_error_handler(struct ata_port *ap); |
| 1795 | |
| 1796 | #else /* CONFIG_SATA_PMP */ |
| 1797 | |
| 1798 | #define sata_pmp_port_ops sata_port_ops |
| 1799 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer |
| 1800 | #define sata_pmp_error_handler ata_std_error_handler |
| 1801 | |
| 1802 | #endif /* CONFIG_SATA_PMP */ |
| 1803 | |
| 1804 | |
| 1805 | /************************************************************************** |
| 1806 | * SFF - drivers/ata/libata-sff.c |
| 1807 | */ |
| 1808 | #ifdef CONFIG_ATA_SFF |
| 1809 | |
| 1810 | extern const struct ata_port_operations ata_sff_port_ops; |
| 1811 | extern const struct ata_port_operations ata_bmdma32_port_ops; |
| 1812 | |
| 1813 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ |
| 1814 | #define ATA_PIO_SHT(drv_name) \ |
| 1815 | ATA_BASE_SHT(drv_name), \ |
| 1816 | .sg_tablesize = LIBATA_MAX_PRD, \ |
| 1817 | .dma_boundary = ATA_DMA_BOUNDARY |
| 1818 | |
| 1819 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
| 1820 | extern u8 ata_sff_check_status(struct ata_port *ap); |
| 1821 | extern void ata_sff_pause(struct ata_port *ap); |
| 1822 | extern void ata_sff_dma_pause(struct ata_port *ap); |
| 1823 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
| 1824 | unsigned long timeout_pat, unsigned long timeout); |
| 1825 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
| 1826 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
| 1827 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
| 1828 | extern void ata_sff_exec_command(struct ata_port *ap, |
| 1829 | const struct ata_taskfile *tf); |
| 1830 | extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, |
| 1831 | unsigned char *buf, unsigned int buflen, int rw); |
| 1832 | extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, |
| 1833 | unsigned char *buf, unsigned int buflen, int rw); |
| 1834 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_queued_cmd *qc, |
| 1835 | unsigned char *buf, unsigned int buflen, int rw); |
| 1836 | extern void ata_sff_irq_on(struct ata_port *ap); |
| 1837 | extern void ata_sff_irq_clear(struct ata_port *ap); |
| 1838 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
| 1839 | u8 status, int in_wq); |
| 1840 | extern void ata_sff_queue_work(struct work_struct *work); |
| 1841 | extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, |
| 1842 | unsigned long delay); |
| 1843 | extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); |
| 1844 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); |
| 1845 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
| 1846 | extern unsigned int ata_sff_port_intr(struct ata_port *ap, |
| 1847 | struct ata_queued_cmd *qc); |
| 1848 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); |
| 1849 | extern void ata_sff_lost_interrupt(struct ata_port *ap); |
| 1850 | extern void ata_sff_freeze(struct ata_port *ap); |
| 1851 | extern void ata_sff_thaw(struct ata_port *ap); |
| 1852 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); |
| 1853 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, |
| 1854 | u8 *r_err); |
| 1855 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
| 1856 | unsigned long deadline); |
| 1857 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
| 1858 | unsigned long deadline); |
| 1859 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
| 1860 | unsigned long deadline); |
| 1861 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); |
| 1862 | extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc); |
| 1863 | extern void ata_sff_error_handler(struct ata_port *ap); |
| 1864 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
| 1865 | #ifdef CONFIG_PCI |
| 1866 | extern int ata_pci_sff_init_host(struct ata_host *host); |
| 1867 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, |
| 1868 | const struct ata_port_info * const * ppi, |
| 1869 | struct ata_host **r_host); |
| 1870 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
| 1871 | irq_handler_t irq_handler, |
| 1872 | struct scsi_host_template *sht); |
| 1873 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
| 1874 | const struct ata_port_info * const * ppi, |
| 1875 | struct scsi_host_template *sht, void *host_priv, int hflags); |
| 1876 | #endif /* CONFIG_PCI */ |
| 1877 | |
| 1878 | #ifdef CONFIG_ATA_BMDMA |
| 1879 | |
| 1880 | extern const struct ata_port_operations ata_bmdma_port_ops; |
| 1881 | |
| 1882 | #define ATA_BMDMA_SHT(drv_name) \ |
| 1883 | ATA_BASE_SHT(drv_name), \ |
| 1884 | .sg_tablesize = LIBATA_MAX_PRD, \ |
| 1885 | .dma_boundary = ATA_DMA_BOUNDARY |
| 1886 | |
| 1887 | extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc); |
| 1888 | extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc); |
| 1889 | extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc); |
| 1890 | extern unsigned int ata_bmdma_port_intr(struct ata_port *ap, |
| 1891 | struct ata_queued_cmd *qc); |
| 1892 | extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance); |
| 1893 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
| 1894 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); |
| 1895 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
| 1896 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
| 1897 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); |
| 1898 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
| 1899 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 1900 | extern int ata_bmdma_port_start(struct ata_port *ap); |
| 1901 | extern int ata_bmdma_port_start32(struct ata_port *ap); |
| 1902 | |
| 1903 | #ifdef CONFIG_PCI |
| 1904 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
| 1905 | extern void ata_pci_bmdma_init(struct ata_host *host); |
| 1906 | extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev, |
| 1907 | const struct ata_port_info * const * ppi, |
| 1908 | struct ata_host **r_host); |
| 1909 | extern int ata_pci_bmdma_init_one(struct pci_dev *pdev, |
| 1910 | const struct ata_port_info * const * ppi, |
| 1911 | struct scsi_host_template *sht, |
| 1912 | void *host_priv, int hflags); |
| 1913 | #endif /* CONFIG_PCI */ |
| 1914 | #endif /* CONFIG_ATA_BMDMA */ |
| 1915 | |
| 1916 | /** |
| 1917 | * ata_sff_busy_wait - Wait for a port status register |
| 1918 | * @ap: Port to wait for. |
| 1919 | * @bits: bits that must be clear |
| 1920 | * @max: number of 10uS waits to perform |
| 1921 | * |
| 1922 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 1923 | * status register to be cleared. |
| 1924 | * Returns final value of status register. |
| 1925 | * |
| 1926 | * LOCKING: |
| 1927 | * Inherited from caller. |
| 1928 | */ |
| 1929 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
| 1930 | unsigned int max) |
| 1931 | { |
| 1932 | u8 status; |
| 1933 | |
| 1934 | do { |
| 1935 | udelay(10); |
| 1936 | status = ap->ops->sff_check_status(ap); |
| 1937 | max--; |
| 1938 | } while (status != 0xff && (status & bits) && (max > 0)); |
| 1939 | |
| 1940 | return status; |
| 1941 | } |
| 1942 | |
| 1943 | /** |
| 1944 | * ata_wait_idle - Wait for a port to be idle. |
| 1945 | * @ap: Port to wait for. |
| 1946 | * |
| 1947 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 1948 | * Returns final value of status register. |
| 1949 | * |
| 1950 | * LOCKING: |
| 1951 | * Inherited from caller. |
| 1952 | */ |
| 1953 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 1954 | { |
| 1955 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
| 1956 | |
| 1957 | #ifdef ATA_DEBUG |
| 1958 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
| 1959 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
| 1960 | status); |
| 1961 | #endif |
| 1962 | |
| 1963 | return status; |
| 1964 | } |
| 1965 | #endif /* CONFIG_ATA_SFF */ |
| 1966 | |
| 1967 | #endif /* __LINUX_LIBATA_H__ */ |