Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jeff Garzik | af36d7f | 2005-08-28 20:18:39 -0400 | [diff] [blame] | 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 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
| 25 | |
| 26 | #ifndef __LINUX_LIBATA_H__ |
| 27 | #define __LINUX_LIBATA_H__ |
| 28 | |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/interrupt.h> |
Andrew Morton | 1c72d8d | 2005-11-10 16:21:38 -0800 | [diff] [blame] | 31 | #include <linux/dma-mapping.h> |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 32 | #include <linux/scatterlist.h> |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 33 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/ata.h> |
| 35 | #include <linux/workqueue.h> |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 36 | #include <scsi/scsi_host.h> |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 37 | #include <linux/acpi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Jeff Garzik | a6d967a | 2006-09-25 15:33:09 -0400 | [diff] [blame] | 39 | /* |
| 40 | * Define if arch has non-standard setup. This is a _PCI_ standard |
| 41 | * not a legacy or ISA standard. |
| 42 | */ |
| 43 | #ifdef CONFIG_ATA_NONSTANDARD |
Alan Cox | 2ec7df0 | 2006-08-10 16:59:10 +0900 | [diff] [blame] | 44 | #include <asm/libata-portmap.h> |
Jeff Garzik | a6d967a | 2006-09-25 15:33:09 -0400 | [diff] [blame] | 45 | #else |
| 46 | #include <asm-generic/libata-portmap.h> |
| 47 | #endif |
Alan Cox | 2ec7df0 | 2006-08-10 16:59:10 +0900 | [diff] [blame] | 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 50 | * compile-time options: to be removed as soon as all the drivers are |
| 51 | * converted to the new debugging mechanism |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | */ |
| 53 | #undef ATA_DEBUG /* debugging output */ |
| 54 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
| 55 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
| 56 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | |
| 59 | /* note: prints function name for you */ |
| 60 | #ifdef ATA_DEBUG |
| 61 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 62 | #ifdef ATA_VERBOSE_DEBUG |
| 63 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 64 | #else |
| 65 | #define VPRINTK(fmt, args...) |
| 66 | #endif /* ATA_VERBOSE_DEBUG */ |
| 67 | #else |
| 68 | #define DPRINTK(fmt, args...) |
| 69 | #define VPRINTK(fmt, args...) |
| 70 | #endif /* ATA_DEBUG */ |
| 71 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 72 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 73 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 74 | /* NEW: debug levels */ |
| 75 | #define HAVE_LIBATA_MSG 1 |
| 76 | |
| 77 | enum { |
| 78 | ATA_MSG_DRV = 0x0001, |
| 79 | ATA_MSG_INFO = 0x0002, |
| 80 | ATA_MSG_PROBE = 0x0004, |
| 81 | ATA_MSG_WARN = 0x0008, |
| 82 | ATA_MSG_MALLOC = 0x0010, |
| 83 | ATA_MSG_CTL = 0x0020, |
| 84 | ATA_MSG_INTR = 0x0040, |
| 85 | ATA_MSG_ERR = 0x0080, |
| 86 | }; |
| 87 | |
| 88 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) |
| 89 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) |
| 90 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) |
| 91 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) |
| 92 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) |
| 93 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) |
| 94 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) |
| 95 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) |
| 96 | |
| 97 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) |
| 98 | { |
| 99 | if (dval < 0 || dval >= (sizeof(u32) * 8)) |
| 100 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ |
| 101 | if (!dval) |
| 102 | return 0; |
| 103 | return (1 << dval) - 1; |
| 104 | } |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | /* defines only for the constants which don't work well as enums */ |
| 107 | #define ATA_TAG_POISON 0xfafbfcfdU |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | enum { |
| 110 | /* various global constants */ |
| 111 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 112 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | ATA_MAX_PORTS = 8, |
| 114 | ATA_DEF_QUEUE = 1, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 115 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 116 | ATA_MAX_QUEUE = 32, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 117 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | ATA_MAX_BUS = 2, |
| 119 | ATA_DEF_BUSY_WAIT = 10000, |
| 120 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, |
| 121 | |
| 122 | ATA_SHT_EMULATED = 1, |
| 123 | ATA_SHT_CMD_PER_LUN = 1, |
| 124 | ATA_SHT_THIS_ID = -1, |
Jeff Garzik | cf48293 | 2005-10-22 00:19:33 -0400 | [diff] [blame] | 125 | ATA_SHT_USE_CLUSTERING = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | /* struct ata_device stuff */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 128 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
| 129 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
Jeff Garzik | 029f546 | 2006-04-02 10:30:40 -0400 | [diff] [blame] | 130 | ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */ |
Tejun Heo | 88e4903 | 2006-05-15 21:03:38 +0900 | [diff] [blame] | 131 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 132 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 133 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
| 134 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 135 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 136 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
| 137 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ |
Kristen Carlson Accardi | 2557164 | 2007-09-11 11:41:59 -0700 | [diff] [blame] | 138 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 139 | |
Kristen Carlson Accardi | 2557164 | 2007-09-11 11:41:59 -0700 | [diff] [blame] | 140 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
| 141 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ |
| 142 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 143 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 144 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 146 | ATA_DFLAG_DETACH = (1 << 16), |
| 147 | ATA_DFLAG_DETACHED = (1 << 17), |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 150 | ATA_DEV_ATA = 1, /* ATA device */ |
| 151 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 152 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 153 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 154 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
| 155 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ |
| 156 | ATA_DEV_SEMB = 7, /* SEMB */ |
| 157 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ |
| 158 | ATA_DEV_NONE = 9, /* no device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 160 | /* struct ata_link flags */ |
| 161 | ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */ |
| 162 | ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H |
| 163 | * Register FIS clearing BSY */ |
Tejun Heo | ae791c0 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 164 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
| 165 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ |
| 166 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ |
| 167 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, |
Tejun Heo | fd995f7 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 168 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
Tejun Heo | f9df58c | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 169 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | /* struct ata_port flags */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 172 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | /* (doesn't imply presence) */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 174 | ATA_FLAG_SATA = (1 << 1), |
| 175 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ |
| 176 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ |
| 177 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ |
| 178 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ |
| 179 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
| 180 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ |
| 181 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 182 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
| 183 | * doesn't handle PIO interrupts */ |
| 184 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 185 | ATA_FLAG_DEBUGMSG = (1 << 13), |
Tejun Heo | b2a8bbe | 2007-01-25 19:40:05 +0900 | [diff] [blame] | 186 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
Alan Cox | f834e49 | 2007-02-07 13:46:00 -0800 | [diff] [blame] | 187 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
Tejun Heo | 3cadbcc | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 188 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 189 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 190 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 191 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 192 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 193 | /* The following flag belongs to ap->pflags but is kept in |
| 194 | * ap->flags because it's referenced in many LLDs and will be |
| 195 | * removed in not-too-distant future. |
| 196 | */ |
| 197 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 198 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 199 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 200 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 201 | /* struct ata_port pflags */ |
| 202 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
| 203 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
| 204 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
| 205 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
| 206 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
| 207 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ |
| 208 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 209 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
Tejun Heo | afaa5c3 | 2007-10-09 15:06:10 +0900 | [diff] [blame] | 210 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 211 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 212 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 213 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 214 | ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 215 | |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 216 | /* struct ata_queued_cmd flags */ |
| 217 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
| 218 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ |
| 219 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
Tejun Heo | 2719736 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 221 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 222 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 223 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
Tejun Heo | e027bd3 | 2007-10-26 16:19:26 +0900 | [diff] [blame] | 224 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 225 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 226 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
| 227 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ |
| 228 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Alan Cox | 4e5ec5d | 2006-03-27 18:42:40 +0100 | [diff] [blame] | 230 | /* host set flags */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 231 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 232 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
Jeff Garzik | 9bec2e3 | 2006-08-31 00:02:15 -0400 | [diff] [blame] | 233 | |
Tejun Heo | b8b275e | 2007-07-10 15:55:43 +0900 | [diff] [blame] | 234 | /* bits 24:31 of host->flags are reserved for LLD specific flags */ |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | /* various lengths of time */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 237 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
| 238 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 239 | ATA_TMOUT_INTERNAL = 30 * HZ, |
| 240 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
Tejun Heo | 88ff6ea | 2007-10-16 14:21:24 -0700 | [diff] [blame] | 242 | /* FIXME: GoVault needs 2s but we can't afford that without |
| 243 | * parallel probing. 800ms is enough for iVDR disk |
| 244 | * HHD424020F7SV00. Increase to 2secs when parallel probing |
| 245 | * is in place. |
| 246 | */ |
| 247 | ATA_TMOUT_FF_WAIT = 4 * HZ / 5, |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* ATA bus states */ |
| 250 | BUS_UNKNOWN = 0, |
| 251 | BUS_DMA = 1, |
| 252 | BUS_IDLE = 2, |
| 253 | BUS_NOINTR = 3, |
| 254 | BUS_NODATA = 4, |
| 255 | BUS_TIMER = 5, |
| 256 | BUS_PIO = 6, |
| 257 | BUS_EDD = 7, |
| 258 | BUS_IDENTIFY = 8, |
| 259 | BUS_PACKET = 9, |
| 260 | |
| 261 | /* SATA port states */ |
| 262 | PORT_UNKNOWN = 0, |
| 263 | PORT_ENABLED = 1, |
| 264 | PORT_DISABLED = 2, |
| 265 | |
| 266 | /* encoding various smaller bitmaps into a single |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 267 | * unsigned int bitmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | */ |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 269 | ATA_BITS_PIO = 7, |
| 270 | ATA_BITS_MWDMA = 5, |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 271 | ATA_BITS_UDMA = 8, |
| 272 | |
| 273 | ATA_SHIFT_PIO = 0, |
| 274 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, |
| 275 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, |
| 276 | |
| 277 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, |
| 278 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, |
| 279 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 280 | |
| 281 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 282 | ATA_DMA_PAD_SZ = 4, |
| 283 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 284 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 285 | /* ering size */ |
| 286 | ATA_ERING_SIZE = 32, |
| 287 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 288 | /* return values for ->qc_defer */ |
| 289 | ATA_DEFER_LINK = 1, |
| 290 | ATA_DEFER_PORT = 2, |
| 291 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 292 | /* desc_len for ata_eh_info and context */ |
| 293 | ATA_EH_DESC_LEN = 80, |
| 294 | |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 295 | /* reset / recovery action types */ |
| 296 | ATA_EH_REVALIDATE = (1 << 0), |
| 297 | ATA_EH_SOFTRESET = (1 << 1), |
| 298 | ATA_EH_HARDRESET = (1 << 2), |
Tejun Heo | f9df58c | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 299 | ATA_EH_ENABLE_LINK = (1 << 3), |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 300 | |
| 301 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 302 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 303 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 304 | /* ata_eh_info->flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 305 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
Tejun Heo | 13abf50 | 2006-07-10 23:18:46 +0900 | [diff] [blame] | 306 | ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 307 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
| 308 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 309 | ATA_EHI_LPM = (1 << 4), /* link power management action */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 310 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 311 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
| 312 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
| 313 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
| 314 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
| 315 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 316 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 317 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
Tejun Heo | 13abf50 | 2006-07-10 23:18:46 +0900 | [diff] [blame] | 318 | ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
| 319 | |
Tejun Heo | a1e10f7 | 2007-08-18 13:28:49 +0900 | [diff] [blame] | 320 | /* max tries if error condition is still set after ->error_handler */ |
| 321 | ATA_EH_MAX_TRIES = 5, |
Tejun Heo | ad9e276 | 2006-05-15 20:58:12 +0900 | [diff] [blame] | 322 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 323 | /* how hard are we gonna try to probe/recover devices */ |
| 324 | ATA_PROBE_MAX_TRIES = 3, |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 325 | ATA_EH_DEV_TRIES = 3, |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 326 | ATA_EH_PMP_TRIES = 5, |
| 327 | ATA_EH_PMP_LINK_TRIES = 3, |
| 328 | |
| 329 | SATA_PMP_SCR_TIMEOUT = 250, |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 330 | |
Alan Cox | 9359085 | 2006-09-12 16:55:12 +0100 | [diff] [blame] | 331 | /* Horkage types. May be set by libata or controller on drives |
| 332 | (some horkage may be drive/controller pair dependant */ |
| 333 | |
| 334 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 335 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
| 336 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 337 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
Tejun Heo | 16c55b0 | 2007-08-29 11:58:33 +0900 | [diff] [blame] | 338 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
Tejun Heo | e31e853 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 339 | ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 340 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 341 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 342 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 343 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 344 | /* DMA mask for user DMA control: User visible values; DO NOT |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 345 | renumber */ |
| 346 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ |
| 347 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ |
| 348 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | }; |
| 350 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 351 | enum hsm_task_states { |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 352 | HSM_ST_IDLE, /* no command on going */ |
Albert Lee | 7152764 | 2007-04-02 11:28:52 +0800 | [diff] [blame] | 353 | HSM_ST_FIRST, /* (waiting the device to) |
| 354 | write CDB or first data block */ |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 355 | HSM_ST, /* (waiting the device to) transfer data */ |
| 356 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 357 | HSM_ST_ERR, /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | }; |
| 359 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 360 | enum ata_completion_errors { |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 361 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 362 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 363 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 364 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 365 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 366 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 367 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 368 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 369 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 370 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
Tejun Heo | 5335b72 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 371 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 372 | }; |
| 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | /* forward declarations */ |
| 375 | struct scsi_device; |
| 376 | struct ata_port_operations; |
| 377 | struct ata_port; |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 378 | struct ata_link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | struct ata_queued_cmd; |
| 380 | |
| 381 | /* typedefs */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 382 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 383 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
| 384 | typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 385 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 386 | typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 388 | /* |
| 389 | * host pm policy: If you alter this, you also need to alter libata-scsi.c |
| 390 | * (for the ascii descriptions) |
| 391 | */ |
| 392 | enum link_pm { |
| 393 | NOT_AVAILABLE, |
| 394 | MIN_POWER, |
| 395 | MAX_PERFORMANCE, |
| 396 | MEDIUM_POWER, |
| 397 | }; |
| 398 | extern struct class_device_attribute class_device_attr_link_power_management_policy; |
| 399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | struct ata_ioports { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 401 | void __iomem *cmd_addr; |
| 402 | void __iomem *data_addr; |
| 403 | void __iomem *error_addr; |
| 404 | void __iomem *feature_addr; |
| 405 | void __iomem *nsect_addr; |
| 406 | void __iomem *lbal_addr; |
| 407 | void __iomem *lbam_addr; |
| 408 | void __iomem *lbah_addr; |
| 409 | void __iomem *device_addr; |
| 410 | void __iomem *status_addr; |
| 411 | void __iomem *command_addr; |
| 412 | void __iomem *altstatus_addr; |
| 413 | void __iomem *ctl_addr; |
| 414 | void __iomem *bmdma_addr; |
| 415 | void __iomem *scr_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | }; |
| 417 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 418 | struct ata_host { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | spinlock_t lock; |
| 420 | struct device *dev; |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 421 | void __iomem * const *iomap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | unsigned int n_ports; |
| 423 | void *private_data; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 424 | const struct ata_port_operations *ops; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 425 | unsigned long flags; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 426 | #ifdef CONFIG_ATA_ACPI |
| 427 | acpi_handle acpi_handle; |
| 428 | #endif |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 429 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
Tejun Heo | f0eb62b | 2006-06-12 23:05:38 +0900 | [diff] [blame] | 430 | struct ata_port *ports[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | }; |
| 432 | |
| 433 | struct ata_queued_cmd { |
| 434 | struct ata_port *ap; |
| 435 | struct ata_device *dev; |
| 436 | |
| 437 | struct scsi_cmnd *scsicmd; |
| 438 | void (*scsidone)(struct scsi_cmnd *); |
| 439 | |
| 440 | struct ata_taskfile tf; |
| 441 | u8 cdb[ATAPI_CDB_LEN]; |
| 442 | |
| 443 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 444 | unsigned int tag; |
| 445 | unsigned int n_elem; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 446 | unsigned int n_iter; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 447 | unsigned int orig_n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | int dma_dir; |
| 450 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 451 | unsigned int pad_len; |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 452 | unsigned int sect_size; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | unsigned int nbytes; |
| 455 | unsigned int curbytes; |
| 456 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 457 | struct scatterlist *cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | unsigned int cursg_ofs; |
| 459 | |
| 460 | struct scatterlist sgent; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 461 | struct scatterlist pad_sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | void *buf_virt; |
| 463 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 464 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
| 465 | struct scatterlist *__sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 467 | unsigned int err_mask; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 468 | struct ata_taskfile result_tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | ata_qc_cb_t complete_fn; |
| 470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | void *private_data; |
Darrick J. Wong | 1c50dc8 | 2007-01-30 01:18:41 -0800 | [diff] [blame] | 472 | void *lldd_task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | }; |
| 474 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 475 | struct ata_port_stats { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | unsigned long unhandled_irq; |
| 477 | unsigned long idle_irq; |
| 478 | unsigned long rw_reqbuf; |
| 479 | }; |
| 480 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 481 | struct ata_ering_entry { |
| 482 | int is_io; |
| 483 | unsigned int err_mask; |
| 484 | u64 timestamp; |
| 485 | }; |
| 486 | |
| 487 | struct ata_ering { |
| 488 | int cursor; |
| 489 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
| 490 | }; |
| 491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | struct ata_device { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 493 | struct ata_link *link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | unsigned int devno; /* 0 or 1 */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 495 | unsigned long flags; /* ATA_DFLAG_xxx */ |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 496 | unsigned int horkage; /* List of broken features */ |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 497 | struct scsi_device *sdev; /* attached SCSI device */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 498 | #ifdef CONFIG_ATA_ACPI |
| 499 | acpi_handle acpi_handle; |
| 500 | #endif |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 501 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
| 502 | u64 n_sectors; /* size of device, if ATA */ |
| 503 | unsigned int class; /* ATA_DEV_xxx */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 504 | |
| 505 | union { |
| 506 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
| 507 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ |
| 508 | }; |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | u8 pio_mode; |
| 511 | u8 dma_mode; |
| 512 | u8 xfer_mode; |
| 513 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
| 514 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 515 | unsigned int multi_count; /* sectors count for |
| 516 | READ/WRITE MULTIPLE */ |
Tejun Heo | b00eec1 | 2006-02-12 23:32:59 +0900 | [diff] [blame] | 517 | unsigned int max_sectors; /* per-device max sectors */ |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 518 | unsigned int cdb_len; |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 519 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 520 | /* per-dev xfer mask */ |
| 521 | unsigned int pio_mask; |
| 522 | unsigned int mwdma_mask; |
| 523 | unsigned int udma_mask; |
| 524 | |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 525 | /* for CHS addressing */ |
| 526 | u16 cylinders; /* Number of cylinders */ |
| 527 | u16 heads; /* Number of heads */ |
| 528 | u16 sectors; /* Number of sectors per track */ |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 529 | |
| 530 | /* error history */ |
| 531 | struct ata_ering ering; |
Tejun Heo | 7d47e8d | 2007-02-02 16:22:31 +0900 | [diff] [blame] | 532 | int spdn_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | }; |
| 534 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 535 | /* Offset into struct ata_device. Fields above it are maintained |
| 536 | * acress device init. Fields below are zeroed. |
| 537 | */ |
| 538 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) |
| 539 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 540 | struct ata_eh_info { |
| 541 | struct ata_device *dev; /* offending device */ |
| 542 | u32 serror; /* SError from LLDD */ |
| 543 | unsigned int err_mask; /* port-wide err_mask */ |
| 544 | unsigned int action; /* ATA_EH_* action mask */ |
Tejun Heo | 47005f2 | 2006-06-19 18:27:23 +0900 | [diff] [blame] | 545 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 546 | unsigned int flags; /* ATA_EHI_* flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 547 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 548 | unsigned int probe_mask; |
| 549 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 550 | char desc[ATA_EH_DESC_LEN]; |
| 551 | int desc_len; |
| 552 | }; |
| 553 | |
| 554 | struct ata_eh_context { |
| 555 | struct ata_eh_info i; |
| 556 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 557 | unsigned int classes[ATA_MAX_DEVICES]; |
| 558 | unsigned int did_probe_mask; |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 559 | }; |
| 560 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 561 | struct ata_acpi_drive |
| 562 | { |
| 563 | u32 pio; |
| 564 | u32 dma; |
| 565 | } __packed; |
| 566 | |
| 567 | struct ata_acpi_gtm { |
| 568 | struct ata_acpi_drive drive[2]; |
| 569 | u32 flags; |
| 570 | } __packed; |
| 571 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 572 | struct ata_link { |
| 573 | struct ata_port *ap; |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 574 | int pmp; /* port multiplier port # */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 575 | |
| 576 | unsigned int active_tag; /* active tag on this link */ |
| 577 | u32 sactive; /* active NCQ commands */ |
| 578 | |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 579 | unsigned int flags; /* ATA_LFLAG_xxx */ |
| 580 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 581 | unsigned int hw_sata_spd_limit; |
| 582 | unsigned int sata_spd_limit; |
| 583 | unsigned int sata_spd; /* current SATA PHY speed */ |
| 584 | |
| 585 | /* record runtime error info, protected by host_set lock */ |
| 586 | struct ata_eh_info eh_info; |
| 587 | /* EH context */ |
| 588 | struct ata_eh_context eh_context; |
| 589 | |
| 590 | struct ata_device device[ATA_MAX_DEVICES]; |
| 591 | }; |
| 592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | struct ata_port { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 594 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 595 | const struct ata_port_operations *ops; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 596 | spinlock_t *lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | unsigned long flags; /* ATA_FLAG_xxx */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 598 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 599 | unsigned int print_id; /* user visible unique port ID */ |
| 600 | unsigned int port_no; /* 0 based port no. inside the host */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | struct ata_prd *prd; /* our SG list */ |
| 603 | dma_addr_t prd_dma; /* and its DMA mapping */ |
| 604 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 605 | void *pad; /* array of DMA pad buffers */ |
| 606 | dma_addr_t pad_dma; |
| 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
| 609 | |
| 610 | u8 ctl; /* cache of ATA control register */ |
| 611 | u8 last_ctl; /* Cache last written value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | unsigned int pio_mask; |
| 613 | unsigned int mwdma_mask; |
| 614 | unsigned int udma_mask; |
| 615 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
| 617 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 618 | unsigned long qc_allocated; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 619 | unsigned int qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 620 | int nr_active_links; /* #links with active qcs */ |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 621 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 622 | struct ata_link link; /* host default link */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 624 | int nr_pmp_links; /* nr of available PMP links */ |
| 625 | struct ata_link *pmp_link; /* array of PMP links */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 626 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 627 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 628 | struct ata_port_stats stats; |
| 629 | struct ata_host *host; |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 630 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 632 | void *port_task_data; |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 633 | struct delayed_work port_task; |
| 634 | struct delayed_work hotplug_task; |
Jeff Garzik | 3b01b8a | 2006-06-12 00:22:04 -0400 | [diff] [blame] | 635 | struct work_struct scsi_rescan_task; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 636 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 637 | unsigned int hsm_task_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 639 | u32 msg_enable; |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 640 | struct list_head eh_done_q; |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 641 | wait_queue_head_t eh_wait_q; |
Tejun Heo | a1e10f7 | 2007-08-18 13:28:49 +0900 | [diff] [blame] | 642 | int eh_tries; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 643 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 644 | pm_message_t pm_mesg; |
| 645 | int *pm_result; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 646 | enum link_pm pm_policy; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 647 | |
Tejun Heo | 5ddf24c | 2007-07-16 14:29:41 +0900 | [diff] [blame] | 648 | struct timer_list fastdrain_timer; |
| 649 | unsigned long fastdrain_cnt; |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | void *private_data; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 652 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 653 | #ifdef CONFIG_ATA_ACPI |
| 654 | acpi_handle acpi_handle; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 655 | struct ata_acpi_gtm acpi_gtm; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 656 | #endif |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 657 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | }; |
| 659 | |
| 660 | struct ata_port_operations { |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 661 | void (*dev_config) (struct ata_device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
| 663 | void (*set_piomode) (struct ata_port *, struct ata_device *); |
| 664 | void (*set_dmamode) (struct ata_port *, struct ata_device *); |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 665 | unsigned long (*mode_filter) (struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 667 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
| 669 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 670 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | u8 (*check_status)(struct ata_port *ap); |
| 672 | u8 (*check_altstatus)(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
| 674 | |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 675 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 676 | int (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev); |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 677 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 678 | int (*cable_detect) (struct ata_port *ap); |
| 679 | |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 680 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | void (*bmdma_setup) (struct ata_queued_cmd *qc); |
| 683 | void (*bmdma_start) (struct ata_queued_cmd *qc); |
| 684 | |
Alan Cox | a6b2c5d | 2006-05-22 16:59:59 +0100 | [diff] [blame] | 685 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
| 686 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 687 | int (*qc_defer) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | void (*qc_prep) (struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 689 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 691 | /* port multiplier */ |
| 692 | void (*pmp_attach) (struct ata_port *ap); |
| 693 | void (*pmp_detach) (struct ata_port *ap); |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 694 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 695 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
| 696 | * indicates that new-style EH is in place. |
| 697 | */ |
| 698 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ |
| 699 | |
| 700 | void (*freeze) (struct ata_port *ap); |
| 701 | void (*thaw) (struct ata_port *ap); |
| 702 | void (*error_handler) (struct ata_port *ap); |
| 703 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 705 | irq_handler_t irq_handler; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | void (*irq_clear) (struct ata_port *); |
Akira Iguchi | 8362500 | 2007-01-26 16:27:32 +0900 | [diff] [blame] | 707 | u8 (*irq_on) (struct ata_port *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 709 | int (*scr_read) (struct ata_port *ap, unsigned int sc_reg, u32 *val); |
| 710 | int (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 712 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
| 713 | int (*port_resume) (struct ata_port *ap); |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 714 | int (*enable_pm) (struct ata_port *ap, enum link_pm policy); |
| 715 | void (*disable_pm) (struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | int (*port_start) (struct ata_port *ap); |
| 717 | void (*port_stop) (struct ata_port *ap); |
| 718 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 719 | void (*host_stop) (struct ata_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 721 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | u8 (*bmdma_status) (struct ata_port *ap); |
| 723 | }; |
| 724 | |
| 725 | struct ata_port_info { |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 726 | struct scsi_host_template *sht; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 727 | unsigned long flags; |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 728 | unsigned long link_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | unsigned long pio_mask; |
| 730 | unsigned long mwdma_mask; |
| 731 | unsigned long udma_mask; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 732 | const struct ata_port_operations *port_ops; |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 733 | irq_handler_t irq_handler; |
Alan Cox | e99f8b5 | 2005-11-08 14:09:44 +0000 | [diff] [blame] | 734 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | }; |
| 736 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 737 | struct ata_timing { |
| 738 | unsigned short mode; /* ATA mode */ |
| 739 | unsigned short setup; /* t1 */ |
| 740 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 741 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 742 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 743 | unsigned short active; /* t2 or tD */ |
| 744 | unsigned short recover; /* t2i or tK */ |
| 745 | unsigned short cycle; /* t0 */ |
| 746 | unsigned short udma; /* t2CYCTYP/2 */ |
| 747 | }; |
| 748 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 749 | #define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 751 | extern const unsigned long sata_deb_timing_normal[]; |
| 752 | extern const unsigned long sata_deb_timing_hotplug[]; |
| 753 | extern const unsigned long sata_deb_timing_long[]; |
| 754 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 755 | extern const struct ata_port_operations ata_dummy_port_ops; |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 756 | extern const struct ata_port_info ata_dummy_port_info; |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 757 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 758 | static inline const unsigned long * |
| 759 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
| 760 | { |
| 761 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
| 762 | return sata_deb_timing_hotplug; |
| 763 | else |
| 764 | return sata_deb_timing_normal; |
| 765 | } |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 766 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 767 | static inline int ata_port_is_dummy(struct ata_port *ap) |
| 768 | { |
| 769 | return ap->ops == &ata_dummy_port_ops; |
| 770 | } |
| 771 | |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 772 | extern void sata_print_link_status(struct ata_link *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | extern void ata_port_probe(struct ata_port *); |
| 774 | extern void __sata_phy_reset(struct ata_port *ap); |
| 775 | extern void sata_phy_reset(struct ata_port *ap); |
| 776 | extern void ata_bus_reset(struct ata_port *ap); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 777 | extern int sata_set_spd(struct ata_link *link); |
| 778 | extern int sata_link_debounce(struct ata_link *link, |
| 779 | const unsigned long *params, unsigned long deadline); |
| 780 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 781 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 782 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
| 783 | extern int ata_std_softreset(struct ata_link *link, unsigned int *classes, |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 784 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 785 | extern int sata_link_hardreset(struct ata_link *link, |
| 786 | const unsigned long *timing, unsigned long deadline); |
| 787 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 788 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 789 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | extern void ata_port_disable(struct ata_port *); |
| 791 | extern void ata_std_ports(struct ata_ioports *ioaddr); |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 792 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 793 | extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 794 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 795 | const struct ata_port_info * const * ppi, int n_ports); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 796 | extern int ata_host_start(struct ata_host *host); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 797 | extern int ata_host_register(struct ata_host *host, |
| 798 | struct scsi_host_template *sht); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 799 | extern int ata_host_activate(struct ata_host *host, int irq, |
| 800 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 801 | struct scsi_host_template *sht); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 802 | extern void ata_host_detach(struct ata_host *host); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 803 | extern void ata_host_init(struct ata_host *, struct device *, |
| 804 | unsigned long, const struct ata_port_operations *); |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 805 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 807 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 808 | extern void ata_sas_port_destroy(struct ata_port *); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 809 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 810 | struct ata_port_info *, struct Scsi_Host *); |
| 811 | extern int ata_sas_port_init(struct ata_port *); |
| 812 | extern int ata_sas_port_start(struct ata_port *ap); |
| 813 | extern void ata_sas_port_stop(struct ata_port *ap); |
| 814 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); |
| 815 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
| 816 | struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 818 | extern int sata_scr_valid(struct ata_link *link); |
| 819 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); |
| 820 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); |
| 821 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); |
| 822 | extern int ata_link_online(struct ata_link *link); |
| 823 | extern int ata_link_offline(struct ata_link *link); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 824 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 825 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
| 826 | extern void ata_host_resume(struct ata_host *host); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 827 | #endif |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 828 | extern int ata_ratelimit(void); |
Tejun Heo | d1adc1b | 2006-10-09 18:32:15 +0900 | [diff] [blame] | 829 | extern int ata_busy_sleep(struct ata_port *ap, |
| 830 | unsigned long timeout_pat, unsigned long timeout); |
Tejun Heo | 88ff6ea | 2007-10-16 14:21:24 -0700 | [diff] [blame] | 831 | extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 832 | extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 833 | extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 834 | void *data, unsigned long delay); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 835 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
| 836 | unsigned long interval_msec, |
| 837 | unsigned long timeout_msec); |
Tejun Heo | 3f19859 | 2007-09-02 23:23:57 +0900 | [diff] [blame] | 838 | extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present, |
| 839 | u8 *r_err); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 840 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | /* |
| 842 | * Default driver ops implementations |
| 843 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 844 | extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 846 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
| 847 | u8 pmp, int is_cmd, u8 *fis); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 848 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 849 | extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device); |
| 850 | extern void ata_std_dev_select(struct ata_port *ap, unsigned int device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | extern u8 ata_check_status(struct ata_port *ap); |
| 852 | extern u8 ata_altstatus(struct ata_port *ap); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 853 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 854 | extern int ata_port_start(struct ata_port *ap); |
| 855 | extern int ata_sff_port_start(struct ata_port *ap); |
| 856 | extern irqreturn_t ata_interrupt(int irq, void *dev_instance); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 857 | extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, |
| 858 | unsigned int buflen, int write_data); |
| 859 | extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, |
| 860 | unsigned int buflen, int write_data); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 861 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 862 | extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 864 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 865 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
| 867 | unsigned int buflen); |
| 868 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 869 | unsigned int n_elem); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 870 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 871 | extern void ata_dev_disable(struct ata_device *adev); |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 872 | extern void ata_id_string(const u16 *id, unsigned char *s, |
| 873 | unsigned int ofs, unsigned int len); |
| 874 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
| 875 | unsigned int ofs, unsigned int len); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 876 | extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 877 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
| 878 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 879 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 881 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
Tejun Heo | 6d97dbd | 2006-05-15 20:58:24 +0900 | [diff] [blame] | 882 | extern void ata_bmdma_freeze(struct ata_port *ap); |
| 883 | extern void ata_bmdma_thaw(struct ata_port *ap); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 884 | extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
Tejun Heo | 6d97dbd | 2006-05-15 20:58:24 +0900 | [diff] [blame] | 885 | ata_reset_fn_t softreset, |
| 886 | ata_reset_fn_t hardreset, |
| 887 | ata_postreset_fn_t postreset); |
| 888 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
| 889 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); |
Tejun Heo | 9a1004d | 2006-05-31 18:27:52 +0900 | [diff] [blame] | 890 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
| 891 | u8 status, int in_wq); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 892 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 893 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
| 894 | void (*finish_qc)(struct ata_queued_cmd *)); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 895 | extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | void (*done)(struct scsi_cmnd *)); |
| 897 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 898 | struct block_device *bdev, |
| 899 | sector_t capacity, int geom[]); |
| 900 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 901 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 902 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
| 903 | int queue_depth); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 904 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 905 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
Akira Iguchi | 8362500 | 2007-01-26 16:27:32 +0900 | [diff] [blame] | 906 | extern u8 ata_irq_on(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 908 | extern int ata_cable_40wire(struct ata_port *ap); |
| 909 | extern int ata_cable_80wire(struct ata_port *ap); |
| 910 | extern int ata_cable_sata(struct ata_port *ap); |
| 911 | extern int ata_cable_unknown(struct ata_port *ap); |
| 912 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 913 | /* |
| 914 | * Timing helpers |
| 915 | */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 916 | |
| 917 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 918 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 919 | struct ata_timing *, int, int); |
| 920 | extern void ata_timing_merge(const struct ata_timing *, |
| 921 | const struct ata_timing *, struct ata_timing *, |
| 922 | unsigned int); |
| 923 | |
| 924 | enum { |
| 925 | ATA_TIMING_SETUP = (1 << 0), |
| 926 | ATA_TIMING_ACT8B = (1 << 1), |
| 927 | ATA_TIMING_REC8B = (1 << 2), |
| 928 | ATA_TIMING_CYC8B = (1 << 3), |
| 929 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 930 | ATA_TIMING_CYC8B, |
| 931 | ATA_TIMING_ACTIVE = (1 << 4), |
| 932 | ATA_TIMING_RECOVER = (1 << 5), |
| 933 | ATA_TIMING_CYCLE = (1 << 6), |
| 934 | ATA_TIMING_UDMA = (1 << 7), |
| 935 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 936 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 937 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 938 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, |
| 939 | }; |
| 940 | |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 941 | /* libata-acpi.c */ |
| 942 | #ifdef CONFIG_ATA_ACPI |
| 943 | extern int ata_acpi_cbl_80wire(struct ata_port *ap); |
Alan Cox | badff03 | 2007-10-04 21:28:18 +0100 | [diff] [blame] | 944 | int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm); |
| 945 | int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm); |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 946 | #else |
| 947 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } |
| 948 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
| 950 | #ifdef CONFIG_PCI |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 951 | struct pci_dev; |
| 952 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 953 | extern int ata_pci_init_one(struct pci_dev *pdev, |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 954 | const struct ata_port_info * const * ppi); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 955 | extern void ata_pci_remove_one(struct pci_dev *pdev); |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 956 | #ifdef CONFIG_PM |
| 957 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 958 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
| 959 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 960 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
| 961 | #endif |
| 962 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); |
| 963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | struct pci_bits { |
| 965 | unsigned int reg; /* PCI config register to read */ |
| 966 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 967 | unsigned long mask; |
| 968 | unsigned long val; |
| 969 | }; |
| 970 | |
Tejun Heo | d583bc1 | 2007-07-04 18:02:07 +0900 | [diff] [blame] | 971 | extern int ata_pci_init_sff_host(struct ata_host *host); |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 972 | extern int ata_pci_init_bmdma(struct ata_host *host); |
Tejun Heo | d583bc1 | 2007-07-04 18:02:07 +0900 | [diff] [blame] | 973 | extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, |
| 974 | const struct ata_port_info * const * ppi, |
| 975 | struct ata_host **r_host); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 976 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 977 | extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | #endif /* CONFIG_PCI */ |
| 979 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 980 | /* |
Tejun Heo | 3af9a77 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 981 | * PMP |
| 982 | */ |
Tejun Heo | 31f8838 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 983 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
Tejun Heo | 3af9a77 | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 984 | extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline); |
| 985 | extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class, |
| 986 | unsigned long deadline); |
| 987 | extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class); |
| 988 | extern void sata_pmp_do_eh(struct ata_port *ap, |
| 989 | ata_prereset_fn_t prereset, ata_reset_fn_t softreset, |
| 990 | ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, |
| 991 | ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset, |
| 992 | ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset); |
| 993 | |
| 994 | /* |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 995 | * EH |
| 996 | */ |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 997 | extern void ata_eng_timeout(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 998 | |
| 999 | extern void ata_port_schedule_eh(struct ata_port *ap); |
Tejun Heo | dbd8261 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1000 | extern int ata_link_abort(struct ata_link *link); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 1001 | extern int ata_port_abort(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1002 | extern int ata_port_freeze(struct ata_port *ap); |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 1003 | extern int sata_async_notification(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1004 | |
| 1005 | extern void ata_eh_freeze_port(struct ata_port *ap); |
| 1006 | extern void ata_eh_thaw_port(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 1007 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1008 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 1009 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
| 1010 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 1011 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
| 1012 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 1013 | ata_postreset_fn_t postreset); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 1014 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1015 | /* |
| 1016 | * printk helpers |
| 1017 | */ |
| 1018 | #define ata_port_printk(ap, lv, fmt, args...) \ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 1019 | printk(lv"ata%u: "fmt, (ap)->print_id , ##args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1021 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
| 1022 | if ((link)->ap->nr_pmp_links) \ |
| 1023 | printk(lv"ata%u.%02u: "fmt, (link)->ap->print_id, \ |
| 1024 | (link)->pmp , ##args); \ |
| 1025 | else \ |
| 1026 | printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args); \ |
| 1027 | } while(0) |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1028 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1029 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1030 | printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, \ |
| 1031 | (dev)->link->pmp + (dev)->devno , ##args) |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1032 | |
| 1033 | /* |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1034 | * ata_eh_info helpers |
| 1035 | */ |
Tejun Heo | cb94c1c | 2007-07-30 14:24:15 +0900 | [diff] [blame] | 1036 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
| 1037 | __attribute__ ((format (printf, 2, 3))); |
| 1038 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
| 1039 | __attribute__ ((format (printf, 2, 3))); |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 1040 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1041 | |
Tejun Heo | f8f1e1c | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1042 | static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi) |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 1043 | { |
Tejun Heo | f8f1e1c | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1044 | ehi->flags |= ATA_EHI_RESUME_LINK; |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 1045 | ehi->action |= ATA_EH_SOFTRESET; |
| 1046 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
| 1047 | } |
| 1048 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 1049 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
| 1050 | { |
Tejun Heo | f8f1e1c | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1051 | ata_ehi_schedule_probe(ehi); |
| 1052 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
Tejun Heo | f9df58c | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 1053 | ehi->action |= ATA_EH_ENABLE_LINK; |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 1054 | ehi->err_mask |= AC_ERR_ATA_BUS; |
| 1055 | } |
| 1056 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1057 | /* |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 1058 | * port description helpers |
| 1059 | */ |
| 1060 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) |
| 1061 | __attribute__ ((format (printf, 2, 3))); |
| 1062 | #ifdef CONFIG_PCI |
| 1063 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, |
| 1064 | const char *name); |
| 1065 | #endif |
| 1066 | |
| 1067 | /* |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1068 | * qc helpers |
| 1069 | */ |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 1070 | static inline struct scatterlist * |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 1071 | ata_qc_first_sg(struct ata_queued_cmd *qc) |
| 1072 | { |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1073 | qc->n_iter = 0; |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 1074 | if (qc->n_elem) |
| 1075 | return qc->__sg; |
| 1076 | if (qc->pad_len) |
| 1077 | return &qc->pad_sgent; |
| 1078 | return NULL; |
| 1079 | } |
| 1080 | |
| 1081 | static inline struct scatterlist * |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 1082 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 1083 | { |
| 1084 | if (sg == &qc->pad_sgent) |
| 1085 | return NULL; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1086 | if (++qc->n_iter < qc->n_elem) |
| 1087 | return sg_next(sg); |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 1088 | if (qc->pad_len) |
| 1089 | return &qc->pad_sgent; |
| 1090 | return NULL; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 1091 | } |
| 1092 | |
| 1093 | #define ata_for_each_sg(sg, qc) \ |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 1094 | for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 1095 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 1097 | { |
| 1098 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 1099 | } |
| 1100 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1101 | static inline unsigned int ata_tag_internal(unsigned int tag) |
| 1102 | { |
| 1103 | return tag == ATA_MAX_QUEUE - 1; |
| 1104 | } |
| 1105 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1106 | /* |
| 1107 | * device helpers |
| 1108 | */ |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1109 | static inline unsigned int ata_class_enabled(unsigned int class) |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 1110 | { |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1111 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
| 1112 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 1113 | } |
| 1114 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1115 | static inline unsigned int ata_class_disabled(unsigned int class) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | { |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1117 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
| 1118 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1119 | } |
| 1120 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 1121 | static inline unsigned int ata_class_absent(unsigned int class) |
| 1122 | { |
| 1123 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
| 1124 | } |
| 1125 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1126 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
| 1127 | { |
| 1128 | return ata_class_enabled(dev->class); |
| 1129 | } |
| 1130 | |
| 1131 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
| 1132 | { |
| 1133 | return ata_class_disabled(dev->class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } |
| 1135 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 1136 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
| 1137 | { |
| 1138 | return ata_class_absent(dev->class); |
| 1139 | } |
| 1140 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1141 | /* |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1142 | * link helpers |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1143 | */ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1144 | static inline int ata_is_host_link(const struct ata_link *link) |
| 1145 | { |
| 1146 | return link == &link->ap->link; |
| 1147 | } |
| 1148 | |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1149 | static inline int ata_link_max_devices(const struct ata_link *link) |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1150 | { |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1151 | if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS) |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1152 | return 2; |
| 1153 | return 1; |
| 1154 | } |
| 1155 | |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1156 | static inline int ata_link_active(struct ata_link *link) |
| 1157 | { |
| 1158 | return ata_tag_valid(link->active_tag) || link->sactive; |
| 1159 | } |
| 1160 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1161 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
| 1162 | { |
| 1163 | if (ap->nr_pmp_links) |
| 1164 | return ap->pmp_link; |
| 1165 | return &ap->link; |
| 1166 | } |
| 1167 | |
| 1168 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) |
| 1169 | { |
| 1170 | struct ata_port *ap = link->ap; |
| 1171 | |
| 1172 | if (link == &ap->link) { |
| 1173 | if (!ap->nr_pmp_links) |
| 1174 | return NULL; |
| 1175 | return ap->pmp_link; |
| 1176 | } |
| 1177 | |
| 1178 | if (++link - ap->pmp_link < ap->nr_pmp_links) |
| 1179 | return link; |
| 1180 | return NULL; |
| 1181 | } |
| 1182 | |
| 1183 | #define __ata_port_for_each_link(lk, ap) \ |
| 1184 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) |
| 1185 | |
| 1186 | #define ata_port_for_each_link(link, ap) \ |
| 1187 | for ((link) = ata_port_first_link(ap); (link); \ |
| 1188 | (link) = ata_port_next_link(link)) |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1189 | |
| 1190 | #define ata_link_for_each_dev(dev, link) \ |
| 1191 | for ((dev) = (link)->device; \ |
| 1192 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ |
| 1193 | (dev)++) |
| 1194 | |
| 1195 | #define ata_link_for_each_dev_reverse(dev, link) \ |
| 1196 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ |
| 1197 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | static inline u8 ata_chk_status(struct ata_port *ap) |
| 1200 | { |
| 1201 | return ap->ops->check_status(ap); |
| 1202 | } |
| 1203 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 1204 | /** |
| 1205 | * ata_ncq_enabled - Test whether NCQ is enabled |
| 1206 | * @dev: ATA device to test for |
| 1207 | * |
| 1208 | * LOCKING: |
| 1209 | * spin_lock_irqsave(host lock) |
| 1210 | * |
| 1211 | * RETURNS: |
| 1212 | * 1 if NCQ is enabled for @dev, 0 otherwise. |
| 1213 | */ |
| 1214 | static inline int ata_ncq_enabled(struct ata_device *dev) |
| 1215 | { |
| 1216 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
| 1217 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
| 1218 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1219 | |
| 1220 | /** |
| 1221 | * ata_pause - Flush writes and pause 400 nanoseconds. |
| 1222 | * @ap: Port to wait for. |
| 1223 | * |
| 1224 | * LOCKING: |
| 1225 | * Inherited from caller. |
| 1226 | */ |
| 1227 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | static inline void ata_pause(struct ata_port *ap) |
| 1229 | { |
| 1230 | ata_altstatus(ap); |
| 1231 | ndelay(400); |
| 1232 | } |
| 1233 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1234 | |
| 1235 | /** |
| 1236 | * ata_busy_wait - Wait for a port status register |
| 1237 | * @ap: Port to wait for. |
Alan | 0777721 | 2007-01-31 17:47:24 +0000 | [diff] [blame] | 1238 | * @bits: bits that must be clear |
| 1239 | * @max: number of 10uS waits to perform |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1240 | * |
| 1241 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 1242 | * status register to be cleared. |
| 1243 | * Returns final value of status register. |
| 1244 | * |
| 1245 | * LOCKING: |
| 1246 | * Inherited from caller. |
| 1247 | */ |
| 1248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
| 1250 | unsigned int max) |
| 1251 | { |
| 1252 | u8 status; |
| 1253 | |
| 1254 | do { |
| 1255 | udelay(10); |
| 1256 | status = ata_chk_status(ap); |
| 1257 | max--; |
Tejun Heo | d1adc1b | 2006-10-09 18:32:15 +0900 | [diff] [blame] | 1258 | } while (status != 0xff && (status & bits) && (max > 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
| 1260 | return status; |
| 1261 | } |
| 1262 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1263 | |
| 1264 | /** |
| 1265 | * ata_wait_idle - Wait for a port to be idle. |
| 1266 | * @ap: Port to wait for. |
| 1267 | * |
| 1268 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 1269 | * Returns final value of status register. |
| 1270 | * |
| 1271 | * LOCKING: |
| 1272 | * Inherited from caller. |
| 1273 | */ |
| 1274 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 1276 | { |
| 1277 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
| 1278 | |
Tejun Heo | 1552945 | 2007-07-30 14:23:03 +0900 | [diff] [blame] | 1279 | #ifdef ATA_DEBUG |
Tejun Heo | 55f3952 | 2007-06-25 21:31:05 +0900 | [diff] [blame] | 1280 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
Tejun Heo | 1552945 | 2007-07-30 14:23:03 +0900 | [diff] [blame] | 1281 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
| 1282 | status); |
| 1283 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
| 1285 | return status; |
| 1286 | } |
| 1287 | |
| 1288 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
| 1289 | { |
| 1290 | qc->tf.ctl |= ATA_NIEN; |
| 1291 | } |
| 1292 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1293 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
| 1294 | unsigned int tag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | { |
| 1296 | if (likely(ata_tag_valid(tag))) |
| 1297 | return &ap->qcmd[tag]; |
| 1298 | return NULL; |
| 1299 | } |
| 1300 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1301 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
| 1302 | unsigned int tag) |
| 1303 | { |
| 1304 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); |
| 1305 | |
| 1306 | if (unlikely(!qc) || !ap->ops->error_handler) |
| 1307 | return qc; |
| 1308 | |
| 1309 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | |
| 1310 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) |
| 1311 | return qc; |
| 1312 | |
| 1313 | return NULL; |
| 1314 | } |
| 1315 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1316 | static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | { |
| 1318 | memset(tf, 0, sizeof(*tf)); |
| 1319 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1320 | tf->ctl = dev->link->ap->ctl; |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1321 | if (dev->devno == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | tf->device = ATA_DEVICE_OBS; |
| 1323 | else |
| 1324 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 1325 | } |
| 1326 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1327 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 1328 | { |
Tejun Heo | 501e0c50 | 2007-01-17 11:34:02 +0900 | [diff] [blame] | 1329 | qc->dma_dir = DMA_NONE; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1330 | qc->__sg = NULL; |
| 1331 | qc->flags = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1332 | qc->cursg = NULL; |
| 1333 | qc->cursg_ofs = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1334 | qc->nbytes = qc->curbytes = 0; |
Brian King | 7a80118 | 2007-01-17 12:32:12 -0600 | [diff] [blame] | 1335 | qc->n_elem = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1336 | qc->n_iter = 0; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1337 | qc->err_mask = 0; |
Brian King | d0f2948 | 2007-01-17 12:32:28 -0600 | [diff] [blame] | 1338 | qc->pad_len = 0; |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 1339 | qc->sect_size = ATA_SECT_SIZE; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1340 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1341 | ata_tf_init(qc->dev, &qc->tf); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1342 | |
| 1343 | /* init result_tf such that it indicates normal completion */ |
| 1344 | qc->result_tf.command = ATA_DRDY; |
| 1345 | qc->result_tf.feature = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1346 | } |
| 1347 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1348 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | { |
| 1350 | return ata_id_wcache_enabled(dev->id) || |
| 1351 | ata_id_has_flush(dev->id) || |
| 1352 | ata_id_has_flush_ext(dev->id); |
| 1353 | } |
| 1354 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1355 | static inline unsigned int ac_err_mask(u8 status) |
| 1356 | { |
Albert Lee | 3655d1d | 2006-05-19 11:43:04 +0800 | [diff] [blame] | 1357 | if (status & (ATA_BUSY | ATA_DRQ)) |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1358 | return AC_ERR_HSM; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1359 | if (status & (ATA_ERR | ATA_DF)) |
| 1360 | return AC_ERR_DEV; |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
| 1364 | static inline unsigned int __ac_err_mask(u8 status) |
| 1365 | { |
| 1366 | unsigned int mask = ac_err_mask(status); |
| 1367 | if (mask == 0) |
| 1368 | return AC_ERR_OTHER; |
| 1369 | return mask; |
| 1370 | } |
| 1371 | |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1372 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
| 1373 | { |
| 1374 | ap->pad_dma = 0; |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1375 | ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
| 1376 | &ap->pad_dma, GFP_KERNEL); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1377 | return (ap->pad == NULL) ? -ENOMEM : 0; |
| 1378 | } |
| 1379 | |
| 1380 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) |
| 1381 | { |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1382 | dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1383 | } |
| 1384 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1385 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
| 1386 | { |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 1387 | return *(struct ata_port **)&host->hostdata[0]; |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1388 | } |
| 1389 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | #endif /* __LINUX_LIBATA_H__ */ |