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> |
Tejun Heo | ceb0c64 | 2007-12-05 16:43:06 +0900 | [diff] [blame] | 38 | #include <linux/cdrom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Jeff Garzik | a6d967a | 2006-09-25 15:33:09 -0400 | [diff] [blame] | 40 | /* |
| 41 | * Define if arch has non-standard setup. This is a _PCI_ standard |
| 42 | * not a legacy or ISA standard. |
| 43 | */ |
| 44 | #ifdef CONFIG_ATA_NONSTANDARD |
Alan Cox | 2ec7df0 | 2006-08-10 16:59:10 +0900 | [diff] [blame] | 45 | #include <asm/libata-portmap.h> |
Jeff Garzik | a6d967a | 2006-09-25 15:33:09 -0400 | [diff] [blame] | 46 | #else |
| 47 | #include <asm-generic/libata-portmap.h> |
| 48 | #endif |
Alan Cox | 2ec7df0 | 2006-08-10 16:59:10 +0900 | [diff] [blame] | 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 51 | * compile-time options: to be removed as soon as all the drivers are |
| 52 | * converted to the new debugging mechanism |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | */ |
| 54 | #undef ATA_DEBUG /* debugging output */ |
| 55 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
| 56 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
| 57 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | |
| 60 | /* note: prints function name for you */ |
| 61 | #ifdef ATA_DEBUG |
| 62 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 63 | #ifdef ATA_VERBOSE_DEBUG |
| 64 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 65 | #else |
| 66 | #define VPRINTK(fmt, args...) |
| 67 | #endif /* ATA_VERBOSE_DEBUG */ |
| 68 | #else |
| 69 | #define DPRINTK(fmt, args...) |
| 70 | #define VPRINTK(fmt, args...) |
| 71 | #endif /* ATA_DEBUG */ |
| 72 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 73 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 74 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 75 | /* NEW: debug levels */ |
| 76 | #define HAVE_LIBATA_MSG 1 |
| 77 | |
| 78 | enum { |
| 79 | ATA_MSG_DRV = 0x0001, |
| 80 | ATA_MSG_INFO = 0x0002, |
| 81 | ATA_MSG_PROBE = 0x0004, |
| 82 | ATA_MSG_WARN = 0x0008, |
| 83 | ATA_MSG_MALLOC = 0x0010, |
| 84 | ATA_MSG_CTL = 0x0020, |
| 85 | ATA_MSG_INTR = 0x0040, |
| 86 | ATA_MSG_ERR = 0x0080, |
| 87 | }; |
| 88 | |
| 89 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) |
| 90 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) |
| 91 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) |
| 92 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) |
| 93 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) |
| 94 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) |
| 95 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) |
| 96 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) |
| 97 | |
| 98 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) |
| 99 | { |
| 100 | if (dval < 0 || dval >= (sizeof(u32) * 8)) |
| 101 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ |
| 102 | if (!dval) |
| 103 | return 0; |
| 104 | return (1 << dval) - 1; |
| 105 | } |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | /* defines only for the constants which don't work well as enums */ |
| 108 | #define ATA_TAG_POISON 0xfafbfcfdU |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | enum { |
| 111 | /* various global constants */ |
| 112 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 113 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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_SHORT_PAUSE = (HZ >> 6) + 1, |
| 119 | |
Tejun Heo | 140b5e5 | 2007-12-12 12:21:52 +0900 | [diff] [blame] | 120 | ATAPI_MAX_DRAIN = 16 << 10, |
| 121 | |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 122 | ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1, |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | ATA_SHT_EMULATED = 1, |
| 125 | ATA_SHT_CMD_PER_LUN = 1, |
| 126 | ATA_SHT_THIS_ID = -1, |
Jeff Garzik | cf48293 | 2005-10-22 00:19:33 -0400 | [diff] [blame] | 127 | ATA_SHT_USE_CLUSTERING = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | /* struct ata_device stuff */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 130 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
| 131 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
Jeff Garzik | 029f546 | 2006-04-02 10:30:40 -0400 | [diff] [blame] | 132 | 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] | 133 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 134 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 135 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
| 136 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 137 | ATA_DFLAG_AN = (1 << 7), /* AN configured */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 138 | ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ |
| 139 | ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ |
Tejun Heo | 9116300 | 2008-02-21 13:25:50 +0900 | [diff] [blame] | 140 | ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ |
Kristen Carlson Accardi | 2557164 | 2007-09-11 11:41:59 -0700 | [diff] [blame] | 141 | ATA_DFLAG_CFG_MASK = (1 << 12) - 1, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 142 | |
Kristen Carlson Accardi | 2557164 | 2007-09-11 11:41:59 -0700 | [diff] [blame] | 143 | ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ |
| 144 | ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ |
| 145 | ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ |
Tejun Heo | 054a5fb | 2007-10-25 18:30:36 +0900 | [diff] [blame] | 146 | ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 147 | ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ |
Tejun Heo | f20ded3 | 2007-11-27 19:28:52 +0900 | [diff] [blame] | 148 | ATA_DFLAG_INIT_MASK = (1 << 24) - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
Tejun Heo | f20ded3 | 2007-11-27 19:28:52 +0900 | [diff] [blame] | 150 | ATA_DFLAG_DETACH = (1 << 24), |
| 151 | ATA_DFLAG_DETACHED = (1 << 25), |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 154 | ATA_DEV_ATA = 1, /* ATA device */ |
| 155 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 156 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 157 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 158 | ATA_DEV_PMP = 5, /* SATA port multiplier */ |
| 159 | ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ |
| 160 | ATA_DEV_SEMB = 7, /* SEMB */ |
| 161 | ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ |
| 162 | ATA_DEV_NONE = 9, /* no device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 164 | /* struct ata_link flags */ |
Tejun Heo | ae791c0 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 165 | ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ |
| 166 | ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ |
| 167 | ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ |
| 168 | ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, |
Tejun Heo | fd995f7 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 169 | ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ |
Tejun Heo | f9df58c | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 170 | ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | /* struct ata_port flags */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 173 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | /* (doesn't imply presence) */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 175 | ATA_FLAG_SATA = (1 << 1), |
| 176 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ |
| 177 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ |
| 178 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ |
| 179 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ |
| 180 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
| 181 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ |
| 182 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 183 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
| 184 | * doesn't handle PIO interrupts */ |
| 185 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 186 | ATA_FLAG_DEBUGMSG = (1 << 13), |
Tejun Heo | b2a8bbe | 2007-01-25 19:40:05 +0900 | [diff] [blame] | 187 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
Alan Cox | f834e49 | 2007-02-07 13:46:00 -0800 | [diff] [blame] | 188 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
Tejun Heo | 3cadbcc | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 189 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
Kristen Carlson Accardi | 9f45cbd | 2007-08-15 03:57:11 -0400 | [diff] [blame] | 190 | ATA_FLAG_AN = (1 << 18), /* controller supports AN */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 191 | ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 192 | ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 193 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 194 | /* The following flag belongs to ap->pflags but is kept in |
| 195 | * ap->flags because it's referenced in many LLDs and will be |
| 196 | * removed in not-too-distant future. |
| 197 | */ |
| 198 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 199 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 200 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 201 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 202 | /* struct ata_port pflags */ |
| 203 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
| 204 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
| 205 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
| 206 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
| 207 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
| 208 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ |
| 209 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 210 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
Tejun Heo | afaa5c3 | 2007-10-09 15:06:10 +0900 | [diff] [blame] | 211 | ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 212 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 213 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 214 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 215 | ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */ |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 216 | |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 217 | /* struct ata_queued_cmd flags */ |
| 218 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
Tejun Heo | 001102d | 2007-12-05 16:43:09 +0900 | [diff] [blame] | 219 | ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ |
Tejun Heo | 2719736 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 220 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 221 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 222 | ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ |
Tejun Heo | e027bd3 | 2007-10-26 16:19:26 +0900 | [diff] [blame] | 223 | ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */ |
Tejun Heo | 03faab7 | 2008-03-27 19:14:24 +0900 | [diff] [blame] | 224 | ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */ |
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 | |
Tejun Heo | 705e76b | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 249 | /* Spec mandates to wait for ">= 2ms" before checking status |
| 250 | * after reset. We wait 150ms, because that was the magic |
| 251 | * delay used for ATAPI devices in Hale Landis's ATADRVR, for |
| 252 | * the period of time between when the ATA command register is |
| 253 | * written, and then status is checked. Because waiting for |
| 254 | * "a while" before checking status is fine, post SRST, we |
| 255 | * perform this magic delay here as well. |
| 256 | * |
| 257 | * Old drivers/ide uses the 2mS rule and then waits for ready. |
| 258 | */ |
| 259 | ATA_WAIT_AFTER_RESET_MSECS = 150, |
| 260 | |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 261 | /* If PMP is supported, we have to do follow-up SRST. As some |
| 262 | * PMPs don't send D2H Reg FIS after hardreset, LLDs are |
| 263 | * advised to wait only for the following duration before |
| 264 | * doing SRST. |
| 265 | */ |
| 266 | ATA_TMOUT_PMP_SRST_WAIT = 1 * HZ, |
| 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | /* ATA bus states */ |
| 269 | BUS_UNKNOWN = 0, |
| 270 | BUS_DMA = 1, |
| 271 | BUS_IDLE = 2, |
| 272 | BUS_NOINTR = 3, |
| 273 | BUS_NODATA = 4, |
| 274 | BUS_TIMER = 5, |
| 275 | BUS_PIO = 6, |
| 276 | BUS_EDD = 7, |
| 277 | BUS_IDENTIFY = 8, |
| 278 | BUS_PACKET = 9, |
| 279 | |
| 280 | /* SATA port states */ |
| 281 | PORT_UNKNOWN = 0, |
| 282 | PORT_ENABLED = 1, |
| 283 | PORT_DISABLED = 2, |
| 284 | |
| 285 | /* encoding various smaller bitmaps into a single |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 286 | * unsigned long bitmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | */ |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 288 | ATA_NR_PIO_MODES = 7, |
| 289 | ATA_NR_MWDMA_MODES = 5, |
| 290 | ATA_NR_UDMA_MODES = 8, |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 291 | |
| 292 | ATA_SHIFT_PIO = 0, |
Tejun Heo | 70cd071 | 2007-11-27 19:43:40 +0900 | [diff] [blame] | 293 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, |
| 294 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 295 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 296 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 297 | ATA_DMA_PAD_SZ = 4, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 298 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 299 | /* ering size */ |
| 300 | ATA_ERING_SIZE = 32, |
| 301 | |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 302 | /* return values for ->qc_defer */ |
| 303 | ATA_DEFER_LINK = 1, |
| 304 | ATA_DEFER_PORT = 2, |
| 305 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 306 | /* desc_len for ata_eh_info and context */ |
| 307 | ATA_EH_DESC_LEN = 80, |
| 308 | |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 309 | /* reset / recovery action types */ |
| 310 | ATA_EH_REVALIDATE = (1 << 0), |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 311 | ATA_EH_SOFTRESET = (1 << 1), /* meaningful only in ->prereset */ |
| 312 | ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */ |
| 313 | ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
Tejun Heo | f9df58c | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 314 | ATA_EH_ENABLE_LINK = (1 << 3), |
Tejun Heo | 3ec25eb | 2008-03-27 18:37:14 +0900 | [diff] [blame] | 315 | ATA_EH_LPM = (1 << 4), /* link power management action */ |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 316 | |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 317 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 318 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 319 | /* ata_eh_info->flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 320 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 321 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
| 322 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 323 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 324 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
| 325 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
| 326 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
| 327 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
| 328 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 329 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 330 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
Tejun Heo | 13abf50 | 2006-07-10 23:18:46 +0900 | [diff] [blame] | 331 | |
Tejun Heo | a1e10f7 | 2007-08-18 13:28:49 +0900 | [diff] [blame] | 332 | /* max tries if error condition is still set after ->error_handler */ |
| 333 | ATA_EH_MAX_TRIES = 5, |
Tejun Heo | ad9e276 | 2006-05-15 20:58:12 +0900 | [diff] [blame] | 334 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 335 | /* how hard are we gonna try to probe/recover devices */ |
| 336 | ATA_PROBE_MAX_TRIES = 3, |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 337 | ATA_EH_DEV_TRIES = 3, |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 338 | ATA_EH_PMP_TRIES = 5, |
| 339 | ATA_EH_PMP_LINK_TRIES = 3, |
| 340 | |
Tejun Heo | bf1bff6 | 2008-05-19 01:15:10 +0900 | [diff] [blame] | 341 | SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */ |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 342 | |
Alan Cox | 9359085 | 2006-09-12 16:55:12 +0100 | [diff] [blame] | 343 | /* Horkage types. May be set by libata or controller on drives |
| 344 | (some horkage may be drive/controller pair dependant */ |
| 345 | |
| 346 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 347 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
| 348 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 349 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
Tejun Heo | 16c55b0 | 2007-08-29 11:58:33 +0900 | [diff] [blame] | 350 | ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ |
Tejun Heo | 50af2fa | 2008-05-19 01:15:14 +0900 | [diff] [blame] | 351 | ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */ |
Alan Cox | 93328e1 | 2007-09-29 04:06:48 -0400 | [diff] [blame] | 352 | ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 353 | ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ |
Alan Cox | 6bbfd53 | 2007-11-05 22:58:58 +0000 | [diff] [blame] | 354 | ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ |
Albert Lee | 2d3b8ee | 2007-11-15 10:35:46 +0900 | [diff] [blame] | 355 | ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */ |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 356 | |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 357 | /* DMA mask for user DMA control: User visible values; DO NOT |
Alan Cox | b3a7060 | 2007-10-02 12:38:26 -0400 | [diff] [blame] | 358 | renumber */ |
| 359 | ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ |
| 360 | ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ |
| 361 | ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ |
Tejun Heo | ceb0c64 | 2007-12-05 16:43:06 +0900 | [diff] [blame] | 362 | |
| 363 | /* ATAPI command types */ |
| 364 | ATAPI_READ = 0, /* READs */ |
| 365 | ATAPI_WRITE = 1, /* WRITEs */ |
| 366 | ATAPI_READ_CD = 2, /* READ CD [MSF] */ |
Tejun Heo | e52dcc4 | 2008-04-02 17:35:19 +0900 | [diff] [blame] | 367 | ATAPI_PASS_THRU = 3, /* SAT pass-thru */ |
| 368 | ATAPI_MISC = 4, /* the rest */ |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 369 | |
| 370 | /* Timing constants */ |
| 371 | ATA_TIMING_SETUP = (1 << 0), |
| 372 | ATA_TIMING_ACT8B = (1 << 1), |
| 373 | ATA_TIMING_REC8B = (1 << 2), |
| 374 | ATA_TIMING_CYC8B = (1 << 3), |
| 375 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 376 | ATA_TIMING_CYC8B, |
| 377 | ATA_TIMING_ACTIVE = (1 << 4), |
| 378 | ATA_TIMING_RECOVER = (1 << 5), |
| 379 | ATA_TIMING_CYCLE = (1 << 6), |
| 380 | ATA_TIMING_UDMA = (1 << 7), |
| 381 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 382 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 383 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 384 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | }; |
| 386 | |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 387 | enum ata_xfer_mask { |
| 388 | ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) |
| 389 | << ATA_SHIFT_PIO, |
| 390 | ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) |
| 391 | << ATA_SHIFT_MWDMA, |
| 392 | ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) |
| 393 | << ATA_SHIFT_UDMA, |
| 394 | }; |
| 395 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 396 | enum hsm_task_states { |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 397 | HSM_ST_IDLE, /* no command on going */ |
Albert Lee | 7152764 | 2007-04-02 11:28:52 +0800 | [diff] [blame] | 398 | HSM_ST_FIRST, /* (waiting the device to) |
| 399 | write CDB or first data block */ |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 400 | HSM_ST, /* (waiting the device to) transfer data */ |
| 401 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 402 | HSM_ST_ERR, /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | }; |
| 404 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 405 | enum ata_completion_errors { |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 406 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 407 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 408 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 409 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 410 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 411 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 412 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 413 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 414 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 415 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
Tejun Heo | 5335b72 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 416 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 417 | }; |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | /* forward declarations */ |
| 420 | struct scsi_device; |
| 421 | struct ata_port_operations; |
| 422 | struct ata_port; |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 423 | struct ata_link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | struct ata_queued_cmd; |
| 425 | |
| 426 | /* typedefs */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 427 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 428 | typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline); |
| 429 | 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] | 430 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 431 | 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] | 432 | |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 433 | /* |
| 434 | * host pm policy: If you alter this, you also need to alter libata-scsi.c |
| 435 | * (for the ascii descriptions) |
| 436 | */ |
| 437 | enum link_pm { |
| 438 | NOT_AVAILABLE, |
| 439 | MIN_POWER, |
| 440 | MAX_PERFORMANCE, |
| 441 | MEDIUM_POWER, |
| 442 | }; |
Tony Jones | ee959b0 | 2008-02-22 00:13:36 +0100 | [diff] [blame] | 443 | extern struct device_attribute dev_attr_link_power_management_policy; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 444 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 445 | #ifdef CONFIG_ATA_SFF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | struct ata_ioports { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 447 | void __iomem *cmd_addr; |
| 448 | void __iomem *data_addr; |
| 449 | void __iomem *error_addr; |
| 450 | void __iomem *feature_addr; |
| 451 | void __iomem *nsect_addr; |
| 452 | void __iomem *lbal_addr; |
| 453 | void __iomem *lbam_addr; |
| 454 | void __iomem *lbah_addr; |
| 455 | void __iomem *device_addr; |
| 456 | void __iomem *status_addr; |
| 457 | void __iomem *command_addr; |
| 458 | void __iomem *altstatus_addr; |
| 459 | void __iomem *ctl_addr; |
| 460 | void __iomem *bmdma_addr; |
| 461 | void __iomem *scr_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | }; |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 463 | #endif /* CONFIG_ATA_SFF */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 465 | struct ata_host { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | spinlock_t lock; |
| 467 | struct device *dev; |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 468 | void __iomem * const *iomap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | unsigned int n_ports; |
| 470 | void *private_data; |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 471 | struct ata_port_operations *ops; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 472 | unsigned long flags; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 473 | #ifdef CONFIG_ATA_ACPI |
| 474 | acpi_handle acpi_handle; |
| 475 | #endif |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 476 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
Tejun Heo | f0eb62b | 2006-06-12 23:05:38 +0900 | [diff] [blame] | 477 | struct ata_port *ports[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | }; |
| 479 | |
| 480 | struct ata_queued_cmd { |
| 481 | struct ata_port *ap; |
| 482 | struct ata_device *dev; |
| 483 | |
| 484 | struct scsi_cmnd *scsicmd; |
| 485 | void (*scsidone)(struct scsi_cmnd *); |
| 486 | |
| 487 | struct ata_taskfile tf; |
| 488 | u8 cdb[ATAPI_CDB_LEN]; |
| 489 | |
| 490 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 491 | unsigned int tag; |
| 492 | unsigned int n_elem; |
| 493 | |
| 494 | int dma_dir; |
| 495 | |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 496 | unsigned int sect_size; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | unsigned int nbytes; |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 499 | unsigned int extrabytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | unsigned int curbytes; |
| 501 | |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 502 | struct scatterlist *cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | unsigned int cursg_ofs; |
| 504 | |
| 505 | struct scatterlist sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 507 | struct scatterlist *sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 509 | unsigned int err_mask; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 510 | struct ata_taskfile result_tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | ata_qc_cb_t complete_fn; |
| 512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | void *private_data; |
Darrick J. Wong | 1c50dc8 | 2007-01-30 01:18:41 -0800 | [diff] [blame] | 514 | void *lldd_task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | }; |
| 516 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 517 | struct ata_port_stats { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | unsigned long unhandled_irq; |
| 519 | unsigned long idle_irq; |
| 520 | unsigned long rw_reqbuf; |
| 521 | }; |
| 522 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 523 | struct ata_ering_entry { |
Tejun Heo | 3884f7b | 2007-11-27 19:28:56 +0900 | [diff] [blame] | 524 | unsigned int eflags; |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 525 | unsigned int err_mask; |
| 526 | u64 timestamp; |
| 527 | }; |
| 528 | |
| 529 | struct ata_ering { |
| 530 | int cursor; |
| 531 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
| 532 | }; |
| 533 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | struct ata_device { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 535 | struct ata_link *link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | unsigned int devno; /* 0 or 1 */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 537 | unsigned long flags; /* ATA_DFLAG_xxx */ |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 538 | unsigned int horkage; /* List of broken features */ |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 539 | struct scsi_device *sdev; /* attached SCSI device */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 540 | #ifdef CONFIG_ATA_ACPI |
| 541 | acpi_handle acpi_handle; |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 542 | union acpi_object *gtf_cache; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 543 | #endif |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 544 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
| 545 | u64 n_sectors; /* size of device, if ATA */ |
| 546 | unsigned int class; /* ATA_DEV_xxx */ |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | u8 pio_mode; |
| 549 | u8 dma_mode; |
| 550 | u8 xfer_mode; |
| 551 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
| 552 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 553 | unsigned int multi_count; /* sectors count for |
| 554 | READ/WRITE MULTIPLE */ |
Tejun Heo | b00eec1 | 2006-02-12 23:32:59 +0900 | [diff] [blame] | 555 | unsigned int max_sectors; /* per-device max sectors */ |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 556 | unsigned int cdb_len; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 557 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 558 | /* per-dev xfer mask */ |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 559 | unsigned long pio_mask; |
| 560 | unsigned long mwdma_mask; |
| 561 | unsigned long udma_mask; |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 562 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 563 | /* for CHS addressing */ |
| 564 | u16 cylinders; /* Number of cylinders */ |
| 565 | u16 heads; /* Number of heads */ |
| 566 | u16 sectors; /* Number of sectors per track */ |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 567 | |
| 568 | /* error history */ |
Tejun Heo | 7d47e8d | 2007-02-02 16:22:31 +0900 | [diff] [blame] | 569 | int spdn_cnt; |
Jeff Garzik | f7e9893 | 2008-04-29 17:47:34 -0400 | [diff] [blame] | 570 | struct ata_ering ering; |
| 571 | |
| 572 | union { |
| 573 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
| 574 | u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ |
| 575 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | }; |
| 577 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 578 | /* Offset into struct ata_device. Fields above it are maintained |
| 579 | * acress device init. Fields below are zeroed. |
| 580 | */ |
| 581 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) |
| 582 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 583 | struct ata_eh_info { |
| 584 | struct ata_device *dev; /* offending device */ |
| 585 | u32 serror; /* SError from LLDD */ |
| 586 | unsigned int err_mask; /* port-wide err_mask */ |
| 587 | unsigned int action; /* ATA_EH_* action mask */ |
Tejun Heo | 47005f2 | 2006-06-19 18:27:23 +0900 | [diff] [blame] | 588 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 589 | unsigned int flags; /* ATA_EHI_* flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 590 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 591 | unsigned int probe_mask; |
| 592 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 593 | char desc[ATA_EH_DESC_LEN]; |
| 594 | int desc_len; |
| 595 | }; |
| 596 | |
| 597 | struct ata_eh_context { |
| 598 | struct ata_eh_info i; |
| 599 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 600 | unsigned int classes[ATA_MAX_DEVICES]; |
| 601 | unsigned int did_probe_mask; |
Tejun Heo | 00115e0 | 2007-11-27 19:28:58 +0900 | [diff] [blame] | 602 | unsigned int saved_ncq_enabled; |
| 603 | u8 saved_xfer_mode[ATA_MAX_DEVICES]; |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 604 | }; |
| 605 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 606 | struct ata_acpi_drive |
| 607 | { |
| 608 | u32 pio; |
| 609 | u32 dma; |
| 610 | } __packed; |
| 611 | |
| 612 | struct ata_acpi_gtm { |
| 613 | struct ata_acpi_drive drive[2]; |
| 614 | u32 flags; |
| 615 | } __packed; |
| 616 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 617 | struct ata_link { |
| 618 | struct ata_port *ap; |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 619 | int pmp; /* port multiplier port # */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 620 | |
| 621 | unsigned int active_tag; /* active tag on this link */ |
| 622 | u32 sactive; /* active NCQ commands */ |
| 623 | |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 624 | unsigned int flags; /* ATA_LFLAG_xxx */ |
| 625 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 626 | unsigned int hw_sata_spd_limit; |
| 627 | unsigned int sata_spd_limit; |
| 628 | unsigned int sata_spd; /* current SATA PHY speed */ |
| 629 | |
| 630 | /* record runtime error info, protected by host_set lock */ |
| 631 | struct ata_eh_info eh_info; |
| 632 | /* EH context */ |
| 633 | struct ata_eh_context eh_context; |
| 634 | |
| 635 | struct ata_device device[ATA_MAX_DEVICES]; |
| 636 | }; |
| 637 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | struct ata_port { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 639 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 640 | struct ata_port_operations *ops; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 641 | spinlock_t *lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | unsigned long flags; /* ATA_FLAG_xxx */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 643 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 644 | unsigned int print_id; /* user visible unique port ID */ |
| 645 | unsigned int port_no; /* 0 based port no. inside the host */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | struct ata_prd *prd; /* our SG list */ |
| 648 | dma_addr_t prd_dma; /* and its DMA mapping */ |
| 649 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 650 | #ifdef CONFIG_ATA_SFF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 652 | #endif /* CONFIG_ATA_SFF */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
| 654 | u8 ctl; /* cache of ATA control register */ |
| 655 | u8 last_ctl; /* Cache last written value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | unsigned int pio_mask; |
| 657 | unsigned int mwdma_mask; |
| 658 | unsigned int udma_mask; |
| 659 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
| 661 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 662 | unsigned long qc_allocated; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 663 | unsigned int qc_active; |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 664 | int nr_active_links; /* #links with active qcs */ |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 665 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 666 | struct ata_link link; /* host default link */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 668 | int nr_pmp_links; /* nr of available PMP links */ |
| 669 | struct ata_link *pmp_link; /* array of PMP links */ |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 670 | struct ata_link *excl_link; /* for PMP qc exclusion */ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 671 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 672 | struct ata_port_stats stats; |
| 673 | struct ata_host *host; |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 674 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 676 | void *port_task_data; |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 677 | struct delayed_work port_task; |
| 678 | struct delayed_work hotplug_task; |
Jeff Garzik | 3b01b8a | 2006-06-12 00:22:04 -0400 | [diff] [blame] | 679 | struct work_struct scsi_rescan_task; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 680 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 681 | unsigned int hsm_task_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 683 | u32 msg_enable; |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 684 | struct list_head eh_done_q; |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 685 | wait_queue_head_t eh_wait_q; |
Tejun Heo | a1e10f7 | 2007-08-18 13:28:49 +0900 | [diff] [blame] | 686 | int eh_tries; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 687 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 688 | pm_message_t pm_mesg; |
| 689 | int *pm_result; |
Kristen Carlson Accardi | ca77329 | 2007-10-25 00:58:59 -0400 | [diff] [blame] | 690 | enum link_pm pm_policy; |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 691 | |
Tejun Heo | 5ddf24c | 2007-07-16 14:29:41 +0900 | [diff] [blame] | 692 | struct timer_list fastdrain_timer; |
| 693 | unsigned long fastdrain_cnt; |
| 694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | void *private_data; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 696 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 697 | #ifdef CONFIG_ATA_ACPI |
| 698 | acpi_handle acpi_handle; |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 699 | struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 700 | #endif |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 701 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | }; |
| 703 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 704 | /* The following initializer overrides a method to NULL whether one of |
| 705 | * its parent has the method defined or not. This is equivalent to |
| 706 | * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant |
| 707 | * expression and thus can't be used as an initializer. |
| 708 | */ |
| 709 | #define ATA_OP_NULL (void *)(unsigned long)(-ENOENT) |
| 710 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | struct ata_port_operations { |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 712 | /* |
| 713 | * Command execution |
| 714 | */ |
| 715 | int (*qc_defer)(struct ata_queued_cmd *qc); |
| 716 | int (*check_atapi_dma)(struct ata_queued_cmd *qc); |
| 717 | void (*qc_prep)(struct ata_queued_cmd *qc); |
| 718 | unsigned int (*qc_issue)(struct ata_queued_cmd *qc); |
Tejun Heo | 22183bf | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 719 | bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 721 | /* |
| 722 | * Configuration and exception handling |
| 723 | */ |
| 724 | int (*cable_detect)(struct ata_port *ap); |
| 725 | unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask); |
| 726 | void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); |
| 727 | void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); |
| 728 | int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 730 | void (*dev_config)(struct ata_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 732 | void (*freeze)(struct ata_port *ap); |
| 733 | void (*thaw)(struct ata_port *ap); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 734 | ata_prereset_fn_t prereset; |
| 735 | ata_reset_fn_t softreset; |
| 736 | ata_reset_fn_t hardreset; |
| 737 | ata_postreset_fn_t postreset; |
| 738 | ata_prereset_fn_t pmp_prereset; |
| 739 | ata_reset_fn_t pmp_softreset; |
| 740 | ata_reset_fn_t pmp_hardreset; |
| 741 | ata_postreset_fn_t pmp_postreset; |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 742 | void (*error_handler)(struct ata_port *ap); |
| 743 | void (*post_internal_cmd)(struct ata_queued_cmd *qc); |
| 744 | |
| 745 | /* |
| 746 | * Optional features |
| 747 | */ |
| 748 | int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val); |
| 749 | int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val); |
| 750 | void (*pmp_attach)(struct ata_port *ap); |
| 751 | void (*pmp_detach)(struct ata_port *ap); |
| 752 | int (*enable_pm)(struct ata_port *ap, enum link_pm policy); |
| 753 | void (*disable_pm)(struct ata_port *ap); |
| 754 | |
| 755 | /* |
| 756 | * Start, stop, suspend and resume |
| 757 | */ |
| 758 | int (*port_suspend)(struct ata_port *ap, pm_message_t mesg); |
| 759 | int (*port_resume)(struct ata_port *ap); |
| 760 | int (*port_start)(struct ata_port *ap); |
| 761 | void (*port_stop)(struct ata_port *ap); |
| 762 | void (*host_stop)(struct ata_host *host); |
| 763 | |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 764 | #ifdef CONFIG_ATA_SFF |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 765 | /* |
| 766 | * SFF / taskfile oriented ops |
| 767 | */ |
Tejun Heo | 5682ed3 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 768 | void (*sff_dev_select)(struct ata_port *ap, unsigned int device); |
| 769 | u8 (*sff_check_status)(struct ata_port *ap); |
| 770 | u8 (*sff_check_altstatus)(struct ata_port *ap); |
| 771 | void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf); |
| 772 | void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf); |
| 773 | void (*sff_exec_command)(struct ata_port *ap, |
| 774 | const struct ata_taskfile *tf); |
| 775 | unsigned int (*sff_data_xfer)(struct ata_device *dev, |
| 776 | unsigned char *buf, unsigned int buflen, int rw); |
| 777 | u8 (*sff_irq_on)(struct ata_port *); |
| 778 | void (*sff_irq_clear)(struct ata_port *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 780 | void (*bmdma_setup)(struct ata_queued_cmd *qc); |
| 781 | void (*bmdma_start)(struct ata_queued_cmd *qc); |
| 782 | void (*bmdma_stop)(struct ata_queued_cmd *qc); |
| 783 | u8 (*bmdma_status)(struct ata_port *ap); |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 784 | #endif /* CONFIG_ATA_SFF */ |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 785 | |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 786 | /* |
| 787 | * Obsolete |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 788 | */ |
Tejun Heo | c1bc899 | 2008-03-25 12:22:47 +0900 | [diff] [blame] | 789 | void (*phy_reset)(struct ata_port *ap); |
| 790 | void (*eng_timeout)(struct ata_port *ap); |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 791 | |
| 792 | /* |
| 793 | * ->inherits must be the last field and all the preceding |
| 794 | * fields must be pointers. |
| 795 | */ |
| 796 | const struct ata_port_operations *inherits; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | }; |
| 798 | |
| 799 | struct ata_port_info { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 800 | unsigned long flags; |
Tejun Heo | 0c88758 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 801 | unsigned long link_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | unsigned long pio_mask; |
| 803 | unsigned long mwdma_mask; |
| 804 | unsigned long udma_mask; |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 805 | struct ata_port_operations *port_ops; |
Alan Cox | e99f8b5 | 2005-11-08 14:09:44 +0000 | [diff] [blame] | 806 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | }; |
| 808 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 809 | struct ata_timing { |
| 810 | unsigned short mode; /* ATA mode */ |
| 811 | unsigned short setup; /* t1 */ |
| 812 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 813 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 814 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 815 | unsigned short active; /* t2 or tD */ |
| 816 | unsigned short recover; /* t2i or tK */ |
| 817 | unsigned short cycle; /* t0 */ |
| 818 | unsigned short udma; /* t2CYCTYP/2 */ |
| 819 | }; |
| 820 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 821 | /* |
| 822 | * Core layer - drivers/ata/libata-core.c |
| 823 | */ |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 824 | extern const unsigned long sata_deb_timing_normal[]; |
| 825 | extern const unsigned long sata_deb_timing_hotplug[]; |
| 826 | extern const unsigned long sata_deb_timing_long[]; |
| 827 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 828 | extern struct ata_port_operations ata_dummy_port_ops; |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 829 | extern const struct ata_port_info ata_dummy_port_info; |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 830 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 831 | static inline const unsigned long * |
| 832 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
| 833 | { |
| 834 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
| 835 | return sata_deb_timing_hotplug; |
| 836 | else |
| 837 | return sata_deb_timing_normal; |
| 838 | } |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 839 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 840 | static inline int ata_port_is_dummy(struct ata_port *ap) |
| 841 | { |
| 842 | return ap->ops == &ata_dummy_port_ops; |
| 843 | } |
| 844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | extern void ata_port_probe(struct ata_port *); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 846 | extern int sata_set_spd(struct ata_link *link); |
Tejun Heo | 0aa1113 | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 847 | extern int ata_std_prereset(struct ata_link *link, unsigned long deadline); |
Tejun Heo | aa2731a | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 848 | extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, |
| 849 | int (*check_ready)(struct ata_link *link)); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 850 | extern int sata_link_debounce(struct ata_link *link, |
| 851 | const unsigned long *params, unsigned long deadline); |
| 852 | extern int sata_link_resume(struct ata_link *link, const unsigned long *params, |
| 853 | unsigned long deadline); |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 854 | extern int sata_link_hardreset(struct ata_link *link, |
Tejun Heo | 9dadd45 | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 855 | const unsigned long *timing, unsigned long deadline, |
| 856 | bool *online, int (*check_ready)(struct ata_link *)); |
Tejun Heo | 57c9efd | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 857 | extern int sata_std_hardreset(struct ata_link *link, unsigned int *class, |
| 858 | unsigned long deadline); |
Tejun Heo | 203c75b | 2008-04-07 22:47:18 +0900 | [diff] [blame] | 859 | extern void ata_std_postreset(struct ata_link *link, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | extern void ata_port_disable(struct ata_port *); |
Jeff Garzik | 2855568 | 2007-10-11 17:12:35 -0400 | [diff] [blame] | 861 | |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 862 | 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] | 863 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 864 | const struct ata_port_info * const * ppi, int n_ports); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 865 | extern int ata_host_start(struct ata_host *host); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 866 | extern int ata_host_register(struct ata_host *host, |
| 867 | struct scsi_host_template *sht); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 868 | extern int ata_host_activate(struct ata_host *host, int irq, |
| 869 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 870 | struct scsi_host_template *sht); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 871 | extern void ata_host_detach(struct ata_host *host); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 872 | extern void ata_host_init(struct ata_host *, struct device *, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 873 | unsigned long, struct ata_port_operations *); |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 874 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 876 | 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] | 877 | extern void ata_sas_port_destroy(struct ata_port *); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 878 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 879 | struct ata_port_info *, struct Scsi_Host *); |
| 880 | extern int ata_sas_port_init(struct ata_port *); |
| 881 | extern int ata_sas_port_start(struct ata_port *ap); |
| 882 | extern void ata_sas_port_stop(struct ata_port *ap); |
| 883 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); |
| 884 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
| 885 | struct ata_port *ap); |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 886 | extern int sata_scr_valid(struct ata_link *link); |
| 887 | extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); |
| 888 | extern int sata_scr_write(struct ata_link *link, int reg, u32 val); |
| 889 | extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); |
| 890 | extern int ata_link_online(struct ata_link *link); |
| 891 | extern int ata_link_offline(struct ata_link *link); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 892 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 893 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
| 894 | extern void ata_host_resume(struct ata_host *host); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 895 | #endif |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 896 | extern int ata_ratelimit(void); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 897 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
| 898 | unsigned long interval_msec, |
| 899 | unsigned long timeout_msec); |
Tejun Heo | 436d34b | 2008-04-02 17:28:46 +0900 | [diff] [blame] | 900 | extern int atapi_cmd_type(u8 opcode); |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 901 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
| 902 | u8 pmp, int is_cmd, u8 *fis); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 903 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
Tejun Heo | 7dc951a | 2007-11-27 19:43:42 +0900 | [diff] [blame] | 904 | extern unsigned long ata_pack_xfermask(unsigned long pio_mask, |
| 905 | unsigned long mwdma_mask, unsigned long udma_mask); |
| 906 | extern void ata_unpack_xfermask(unsigned long xfer_mask, |
| 907 | unsigned long *pio_mask, unsigned long *mwdma_mask, |
| 908 | unsigned long *udma_mask); |
| 909 | extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); |
| 910 | extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); |
| 911 | extern int ata_xfer_mode2shift(unsigned long xfer_mode); |
| 912 | extern const char *ata_mode_string(unsigned long xfer_mask); |
| 913 | extern unsigned long ata_id_xfermask(const u16 *id); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 914 | extern int ata_port_start(struct ata_port *ap); |
Tejun Heo | 31cc23b | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 915 | extern int ata_std_qc_defer(struct ata_queued_cmd *qc); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 916 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 918 | unsigned int n_elem); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 919 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 920 | extern void ata_dev_disable(struct ata_device *adev); |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 921 | extern void ata_id_string(const u16 *id, unsigned char *s, |
| 922 | unsigned int ofs, unsigned int len); |
| 923 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
| 924 | unsigned int ofs, unsigned int len); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 925 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
Tejun Heo | 79f97da | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 926 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 927 | 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] | 928 | void (*done)(struct scsi_cmnd *)); |
| 929 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 930 | struct block_device *bdev, |
| 931 | sector_t capacity, int geom[]); |
| 932 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 933 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 934 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
| 935 | int queue_depth); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 936 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
Tejun Heo | 0260731 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 937 | extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 939 | extern int ata_cable_40wire(struct ata_port *ap); |
| 940 | extern int ata_cable_80wire(struct ata_port *ap); |
| 941 | extern int ata_cable_sata(struct ata_port *ap); |
Tejun Heo | c88f90c | 2007-11-27 19:43:48 +0900 | [diff] [blame] | 942 | extern int ata_cable_ignore(struct ata_port *ap); |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 943 | extern int ata_cable_unknown(struct ata_port *ap); |
| 944 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 945 | /* Timing helpers */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 946 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
Tejun Heo | 6357357 | 2007-11-27 19:43:39 +0900 | [diff] [blame] | 947 | extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 948 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 949 | struct ata_timing *, int, int); |
| 950 | extern void ata_timing_merge(const struct ata_timing *, |
| 951 | const struct ata_timing *, struct ata_timing *, |
| 952 | unsigned int); |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 953 | extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 954 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 955 | /* PCI */ |
| 956 | #ifdef CONFIG_PCI |
| 957 | struct pci_dev; |
| 958 | |
| 959 | struct pci_bits { |
| 960 | unsigned int reg; /* PCI config register to read */ |
| 961 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 962 | unsigned long mask; |
| 963 | unsigned long val; |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 964 | }; |
| 965 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 966 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
| 967 | extern void ata_pci_remove_one(struct pci_dev *pdev); |
| 968 | |
| 969 | #ifdef CONFIG_PM |
| 970 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 971 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
| 972 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
| 973 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
| 974 | #endif /* CONFIG_PM */ |
| 975 | #endif /* CONFIG_PCI */ |
| 976 | |
| 977 | /* |
| 978 | * ACPI - drivers/ata/libata-acpi.c |
| 979 | */ |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 980 | #ifdef CONFIG_ATA_ACPI |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 981 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
| 982 | { |
| 983 | if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) |
| 984 | return &ap->__acpi_init_gtm; |
| 985 | return NULL; |
| 986 | } |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 987 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); |
| 988 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 989 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 990 | const struct ata_acpi_gtm *gtm); |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 991 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 992 | #else |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 993 | static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) |
| 994 | { |
| 995 | return NULL; |
| 996 | } |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 997 | |
| 998 | static inline int ata_acpi_stm(const struct ata_port *ap, |
| 999 | struct ata_acpi_gtm *stm) |
| 1000 | { |
| 1001 | return -ENOSYS; |
| 1002 | } |
| 1003 | |
| 1004 | static inline int ata_acpi_gtm(const struct ata_port *ap, |
| 1005 | struct ata_acpi_gtm *stm) |
| 1006 | { |
| 1007 | return -ENOSYS; |
| 1008 | } |
| 1009 | |
| 1010 | static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 1011 | const struct ata_acpi_gtm *gtm) |
| 1012 | { |
| 1013 | return 0; |
| 1014 | } |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 1015 | |
| 1016 | static inline int ata_acpi_cbl_80wire(struct ata_port *ap, |
| 1017 | const struct ata_acpi_gtm *gtm) |
| 1018 | { |
| 1019 | return 0; |
| 1020 | } |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 1021 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1023 | /* |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1024 | * EH - drivers/ata/libata-eh.c |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1025 | */ |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 1026 | extern void ata_port_schedule_eh(struct ata_port *ap); |
Tejun Heo | dbd8261 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1027 | extern int ata_link_abort(struct ata_link *link); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 1028 | extern int ata_port_abort(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1029 | extern int ata_port_freeze(struct ata_port *ap); |
Tejun Heo | 7d77b24 | 2007-09-23 13:14:13 +0900 | [diff] [blame] | 1030 | extern int sata_async_notification(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 1031 | |
| 1032 | extern void ata_eh_freeze_port(struct ata_port *ap); |
| 1033 | extern void ata_eh_thaw_port(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 1034 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1035 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 1036 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
Mark Lord | 10acf3b | 2008-05-02 02:14:53 -0400 | [diff] [blame] | 1037 | extern void ata_eh_analyze_ncq_error(struct ata_link *link); |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 1038 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 1039 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
| 1040 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 1041 | ata_postreset_fn_t postreset); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 1042 | extern void ata_std_error_handler(struct ata_port *ap); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 1043 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1044 | /* |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 1045 | * Base operations to inherit from and initializers for sht |
| 1046 | * |
| 1047 | * Operations |
| 1048 | * |
| 1049 | * base : Common to all libata drivers. |
| 1050 | * sata : SATA controllers w/ native interface. |
| 1051 | * pmp : SATA controllers w/ PMP support. |
| 1052 | * sff : SFF ATA controllers w/o BMDMA support. |
| 1053 | * bmdma : SFF ATA controllers w/ BMDMA support. |
| 1054 | * |
| 1055 | * sht initializers |
| 1056 | * |
| 1057 | * BASE : Common to all libata drivers. The user must set |
| 1058 | * sg_tablesize and dma_boundary. |
| 1059 | * PIO : SFF ATA controllers w/ only PIO support. |
| 1060 | * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and |
| 1061 | * dma_boundary are set to BMDMA limits. |
| 1062 | * NCQ : SATA controllers supporting NCQ. The user must set |
| 1063 | * sg_tablesize, dma_boundary and can_queue. |
| 1064 | */ |
| 1065 | extern const struct ata_port_operations ata_base_port_ops; |
| 1066 | extern const struct ata_port_operations sata_port_ops; |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 1067 | |
| 1068 | #define ATA_BASE_SHT(drv_name) \ |
| 1069 | .module = THIS_MODULE, \ |
| 1070 | .name = drv_name, \ |
| 1071 | .ioctl = ata_scsi_ioctl, \ |
| 1072 | .queuecommand = ata_scsi_queuecmd, \ |
| 1073 | .can_queue = ATA_DEF_QUEUE, \ |
| 1074 | .this_id = ATA_SHT_THIS_ID, \ |
| 1075 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \ |
| 1076 | .emulated = ATA_SHT_EMULATED, \ |
| 1077 | .use_clustering = ATA_SHT_USE_CLUSTERING, \ |
| 1078 | .proc_name = drv_name, \ |
| 1079 | .slave_configure = ata_scsi_slave_config, \ |
| 1080 | .slave_destroy = ata_scsi_slave_destroy, \ |
| 1081 | .bios_param = ata_std_bios_param |
| 1082 | |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 1083 | #define ATA_NCQ_SHT(drv_name) \ |
| 1084 | ATA_BASE_SHT(drv_name), \ |
| 1085 | .change_queue_depth = ata_scsi_change_queue_depth |
| 1086 | |
| 1087 | /* |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1088 | * PMP helpers |
| 1089 | */ |
Tejun Heo | 88fcd56 | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1090 | #ifdef CONFIG_SATA_PMP |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1091 | static inline bool sata_pmp_supported(struct ata_port *ap) |
| 1092 | { |
| 1093 | return ap->flags & ATA_FLAG_PMP; |
| 1094 | } |
| 1095 | |
| 1096 | static inline bool sata_pmp_attached(struct ata_port *ap) |
| 1097 | { |
| 1098 | return ap->nr_pmp_links != 0; |
| 1099 | } |
| 1100 | |
| 1101 | static inline int ata_is_host_link(const struct ata_link *link) |
| 1102 | { |
| 1103 | return link == &link->ap->link; |
| 1104 | } |
Tejun Heo | 88fcd56 | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1105 | #else /* CONFIG_SATA_PMP */ |
| 1106 | static inline bool sata_pmp_supported(struct ata_port *ap) |
| 1107 | { |
| 1108 | return false; |
| 1109 | } |
| 1110 | |
| 1111 | static inline bool sata_pmp_attached(struct ata_port *ap) |
| 1112 | { |
| 1113 | return false; |
| 1114 | } |
| 1115 | |
| 1116 | static inline int ata_is_host_link(const struct ata_link *link) |
| 1117 | { |
| 1118 | return 1; |
| 1119 | } |
| 1120 | #endif /* CONFIG_SATA_PMP */ |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1121 | |
| 1122 | static inline int sata_srst_pmp(struct ata_link *link) |
| 1123 | { |
| 1124 | if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) |
| 1125 | return SATA_PMP_CTRL_PORT; |
| 1126 | return link->pmp; |
| 1127 | } |
| 1128 | |
| 1129 | /* |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1130 | * printk helpers |
| 1131 | */ |
| 1132 | #define ata_port_printk(ap, lv, fmt, args...) \ |
Tejun Heo | c2e366a | 2007-12-15 15:04:58 +0900 | [diff] [blame] | 1133 | printk("%sata%u: "fmt, lv, (ap)->print_id , ##args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1135 | #define ata_link_printk(link, lv, fmt, args...) do { \ |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1136 | if (sata_pmp_attached((link)->ap)) \ |
Tejun Heo | c2e366a | 2007-12-15 15:04:58 +0900 | [diff] [blame] | 1137 | printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1138 | (link)->pmp , ##args); \ |
| 1139 | else \ |
Tejun Heo | c2e366a | 2007-12-15 15:04:58 +0900 | [diff] [blame] | 1140 | printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1141 | } while(0) |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1142 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1143 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
Tejun Heo | c2e366a | 2007-12-15 15:04:58 +0900 | [diff] [blame] | 1144 | printk("%sata%u.%02u: "fmt, lv, (dev)->link->ap->print_id, \ |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1145 | (dev)->link->pmp + (dev)->devno , ##args) |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 1146 | |
| 1147 | /* |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1148 | * ata_eh_info helpers |
| 1149 | */ |
Tejun Heo | cb94c1c | 2007-07-30 14:24:15 +0900 | [diff] [blame] | 1150 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
| 1151 | __attribute__ ((format (printf, 2, 3))); |
| 1152 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) |
| 1153 | __attribute__ ((format (printf, 2, 3))); |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 1154 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1155 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 1156 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
| 1157 | { |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 1158 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
Tejun Heo | f8f1e1c | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1159 | ehi->flags |= ATA_EHI_HOTPLUGGED; |
Tejun Heo | b558edd | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 1160 | ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK; |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 1161 | ehi->err_mask |= AC_ERR_ATA_BUS; |
| 1162 | } |
| 1163 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 1164 | /* |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 1165 | * port description helpers |
| 1166 | */ |
| 1167 | extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) |
| 1168 | __attribute__ ((format (printf, 2, 3))); |
| 1169 | #ifdef CONFIG_PCI |
| 1170 | extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, |
| 1171 | const char *name); |
| 1172 | #endif |
| 1173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 1175 | { |
| 1176 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 1177 | } |
| 1178 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1179 | static inline unsigned int ata_tag_internal(unsigned int tag) |
| 1180 | { |
Yoichi Yuasa | 83c063d | 2008-02-28 21:43:13 +0900 | [diff] [blame] | 1181 | return tag == ATA_TAG_INTERNAL; |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 1182 | } |
| 1183 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1184 | /* |
| 1185 | * device helpers |
| 1186 | */ |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1187 | static inline unsigned int ata_class_enabled(unsigned int class) |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 1188 | { |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1189 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || |
| 1190 | class == ATA_DEV_PMP || class == ATA_DEV_SEMB; |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 1191 | } |
| 1192 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1193 | static inline unsigned int ata_class_disabled(unsigned int class) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
Tejun Heo | e0a7175 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1195 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || |
| 1196 | class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1197 | } |
| 1198 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 1199 | static inline unsigned int ata_class_absent(unsigned int class) |
| 1200 | { |
| 1201 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
| 1202 | } |
| 1203 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 1204 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
| 1205 | { |
| 1206 | return ata_class_enabled(dev->class); |
| 1207 | } |
| 1208 | |
| 1209 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
| 1210 | { |
| 1211 | return ata_class_disabled(dev->class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | } |
| 1213 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 1214 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
| 1215 | { |
| 1216 | return ata_class_absent(dev->class); |
| 1217 | } |
| 1218 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1219 | /* |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1220 | * link helpers |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1221 | */ |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1222 | static inline int ata_link_max_devices(const struct ata_link *link) |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1223 | { |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1224 | 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] | 1225 | return 2; |
| 1226 | return 1; |
| 1227 | } |
| 1228 | |
Tejun Heo | da917d6 | 2007-09-23 13:14:12 +0900 | [diff] [blame] | 1229 | static inline int ata_link_active(struct ata_link *link) |
| 1230 | { |
| 1231 | return ata_tag_valid(link->active_tag) || link->sactive; |
| 1232 | } |
| 1233 | |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1234 | static inline struct ata_link *ata_port_first_link(struct ata_port *ap) |
| 1235 | { |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1236 | if (sata_pmp_attached(ap)) |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1237 | return ap->pmp_link; |
| 1238 | return &ap->link; |
| 1239 | } |
| 1240 | |
| 1241 | static inline struct ata_link *ata_port_next_link(struct ata_link *link) |
| 1242 | { |
| 1243 | struct ata_port *ap = link->ap; |
| 1244 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1245 | if (ata_is_host_link(link)) { |
| 1246 | if (!sata_pmp_attached(ap)) |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1247 | return NULL; |
| 1248 | return ap->pmp_link; |
| 1249 | } |
| 1250 | |
Harvey Harrison | 5d44b41 | 2008-02-15 13:41:32 -0800 | [diff] [blame] | 1251 | if (++link < ap->nr_pmp_links + ap->pmp_link) |
Tejun Heo | 8989805 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1252 | return link; |
| 1253 | return NULL; |
| 1254 | } |
| 1255 | |
| 1256 | #define __ata_port_for_each_link(lk, ap) \ |
| 1257 | for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk)) |
| 1258 | |
| 1259 | #define ata_port_for_each_link(link, ap) \ |
| 1260 | for ((link) = ata_port_first_link(ap); (link); \ |
| 1261 | (link) = ata_port_next_link(link)) |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 1262 | |
| 1263 | #define ata_link_for_each_dev(dev, link) \ |
| 1264 | for ((dev) = (link)->device; \ |
| 1265 | (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ |
| 1266 | (dev)++) |
| 1267 | |
| 1268 | #define ata_link_for_each_dev_reverse(dev, link) \ |
| 1269 | for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ |
| 1270 | (dev) >= (link)->device || ((dev) = NULL); (dev)--) |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1271 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 1272 | /** |
| 1273 | * ata_ncq_enabled - Test whether NCQ is enabled |
| 1274 | * @dev: ATA device to test for |
| 1275 | * |
| 1276 | * LOCKING: |
| 1277 | * spin_lock_irqsave(host lock) |
| 1278 | * |
| 1279 | * RETURNS: |
| 1280 | * 1 if NCQ is enabled for @dev, 0 otherwise. |
| 1281 | */ |
| 1282 | static inline int ata_ncq_enabled(struct ata_device *dev) |
| 1283 | { |
| 1284 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
| 1285 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
| 1286 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1287 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 1316 | static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc) |
| 1317 | { |
| 1318 | return qc->nbytes - min(qc->extrabytes, qc->nbytes); |
| 1319 | } |
| 1320 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1321 | 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] | 1322 | { |
| 1323 | memset(tf, 0, sizeof(*tf)); |
| 1324 | |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 1325 | tf->ctl = dev->link->ap->ctl; |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1326 | if (dev->devno == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | tf->device = ATA_DEVICE_OBS; |
| 1328 | else |
| 1329 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 1330 | } |
| 1331 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1332 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 1333 | { |
Tejun Heo | 501e0c5 | 2007-01-17 11:34:02 +0900 | [diff] [blame] | 1334 | qc->dma_dir = DMA_NONE; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 1335 | qc->sg = NULL; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1336 | qc->flags = 0; |
Jens Axboe | 8726021 | 2007-10-16 11:14:12 +0200 | [diff] [blame] | 1337 | qc->cursg = NULL; |
| 1338 | qc->cursg_ofs = 0; |
Tejun Heo | aacda37 | 2008-03-18 17:47:43 +0900 | [diff] [blame] | 1339 | qc->nbytes = qc->extrabytes = qc->curbytes = 0; |
Brian King | 7a80118 | 2007-01-17 12:32:12 -0600 | [diff] [blame] | 1340 | qc->n_elem = 0; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1341 | qc->err_mask = 0; |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 1342 | qc->sect_size = ATA_SECT_SIZE; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1343 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1344 | ata_tf_init(qc->dev, &qc->tf); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1345 | |
| 1346 | /* init result_tf such that it indicates normal completion */ |
| 1347 | qc->result_tf.command = ATA_DRDY; |
| 1348 | qc->result_tf.feature = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1349 | } |
| 1350 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1351 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | { |
| 1353 | return ata_id_wcache_enabled(dev->id) || |
| 1354 | ata_id_has_flush(dev->id) || |
| 1355 | ata_id_has_flush_ext(dev->id); |
| 1356 | } |
| 1357 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1358 | static inline unsigned int ac_err_mask(u8 status) |
| 1359 | { |
Albert Lee | 3655d1d | 2006-05-19 11:43:04 +0800 | [diff] [blame] | 1360 | if (status & (ATA_BUSY | ATA_DRQ)) |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1361 | return AC_ERR_HSM; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1362 | if (status & (ATA_ERR | ATA_DF)) |
| 1363 | return AC_ERR_DEV; |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
| 1367 | static inline unsigned int __ac_err_mask(u8 status) |
| 1368 | { |
| 1369 | unsigned int mask = ac_err_mask(status); |
| 1370 | if (mask == 0) |
| 1371 | return AC_ERR_OTHER; |
| 1372 | return mask; |
| 1373 | } |
| 1374 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1375 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
| 1376 | { |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 1377 | return *(struct ata_port **)&host->hostdata[0]; |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1378 | } |
| 1379 | |
Tejun Heo | 78ab88f | 2008-05-01 23:41:41 +0900 | [diff] [blame] | 1380 | static inline int ata_check_ready(u8 status) |
| 1381 | { |
Jeff Garzik | 005b1f7 | 2008-05-09 15:00:55 -0400 | [diff] [blame] | 1382 | if (!(status & ATA_BUSY)) |
| 1383 | return 1; |
Tejun Heo | 78ab88f | 2008-05-01 23:41:41 +0900 | [diff] [blame] | 1384 | |
| 1385 | /* 0xff indicates either no device or device not ready */ |
| 1386 | if (status == 0xff) |
| 1387 | return -ENODEV; |
| 1388 | |
Jeff Garzik | 005b1f7 | 2008-05-09 15:00:55 -0400 | [diff] [blame] | 1389 | return 0; |
Tejun Heo | 78ab88f | 2008-05-01 23:41:41 +0900 | [diff] [blame] | 1390 | } |
| 1391 | |
Tejun Heo | 48515f6 | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 1392 | |
| 1393 | /************************************************************************** |
| 1394 | * PMP - drivers/ata/libata-pmp.c |
| 1395 | */ |
Tejun Heo | 88fcd56 | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1396 | #ifdef CONFIG_SATA_PMP |
| 1397 | |
Tejun Heo | 48515f6 | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 1398 | extern const struct ata_port_operations sata_pmp_port_ops; |
| 1399 | |
| 1400 | extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc); |
| 1401 | extern void sata_pmp_error_handler(struct ata_port *ap); |
| 1402 | |
Tejun Heo | 88fcd56 | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 1403 | #else /* CONFIG_SATA_PMP */ |
| 1404 | |
| 1405 | #define sata_pmp_port_ops sata_port_ops |
| 1406 | #define sata_pmp_qc_defer_cmd_switch ata_std_qc_defer |
| 1407 | #define sata_pmp_error_handler ata_std_error_handler |
| 1408 | |
| 1409 | #endif /* CONFIG_SATA_PMP */ |
| 1410 | |
Tejun Heo | 48515f6 | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 1411 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1412 | /************************************************************************** |
| 1413 | * SFF - drivers/ata/libata-sff.c |
| 1414 | */ |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 1415 | #ifdef CONFIG_ATA_SFF |
| 1416 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1417 | extern const struct ata_port_operations ata_sff_port_ops; |
| 1418 | extern const struct ata_port_operations ata_bmdma_port_ops; |
| 1419 | |
| 1420 | /* PIO only, sg_tablesize and dma_boundary limits can be removed */ |
| 1421 | #define ATA_PIO_SHT(drv_name) \ |
| 1422 | ATA_BASE_SHT(drv_name), \ |
| 1423 | .sg_tablesize = LIBATA_MAX_PRD, \ |
| 1424 | .dma_boundary = ATA_DMA_BOUNDARY |
| 1425 | |
| 1426 | #define ATA_BMDMA_SHT(drv_name) \ |
| 1427 | ATA_BASE_SHT(drv_name), \ |
| 1428 | .sg_tablesize = LIBATA_MAX_PRD, \ |
| 1429 | .dma_boundary = ATA_DMA_BOUNDARY |
| 1430 | |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1431 | extern void ata_sff_qc_prep(struct ata_queued_cmd *qc); |
| 1432 | extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc); |
| 1433 | extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device); |
| 1434 | extern u8 ata_sff_check_status(struct ata_port *ap); |
Alan Cox | a57c1ba | 2008-05-29 22:10:58 +0100 | [diff] [blame] | 1435 | extern void ata_sff_pause(struct ata_port *ap); |
| 1436 | extern void ata_sff_dma_pause(struct ata_port *ap); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1437 | extern int ata_sff_busy_sleep(struct ata_port *ap, |
| 1438 | unsigned long timeout_pat, unsigned long timeout); |
Tejun Heo | 705e76b | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 1439 | extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1440 | extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
| 1441 | extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
| 1442 | extern void ata_sff_exec_command(struct ata_port *ap, |
| 1443 | const struct ata_taskfile *tf); |
| 1444 | extern unsigned int ata_sff_data_xfer(struct ata_device *dev, |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1445 | unsigned char *buf, unsigned int buflen, int rw); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1446 | extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1447 | unsigned char *buf, unsigned int buflen, int rw); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1448 | extern u8 ata_sff_irq_on(struct ata_port *ap); |
| 1449 | extern void ata_sff_irq_clear(struct ata_port *ap); |
| 1450 | extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
| 1451 | u8 status, int in_wq); |
| 1452 | extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); |
Tejun Heo | 22183bf | 2008-04-07 22:47:20 +0900 | [diff] [blame] | 1453 | extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1454 | extern unsigned int ata_sff_host_intr(struct ata_port *ap, |
| 1455 | struct ata_queued_cmd *qc); |
| 1456 | extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); |
| 1457 | extern void ata_sff_freeze(struct ata_port *ap); |
| 1458 | extern void ata_sff_thaw(struct ata_port *ap); |
| 1459 | extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline); |
| 1460 | extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, |
| 1461 | u8 *r_err); |
Tejun Heo | 705e76b | 2008-04-07 22:47:19 +0900 | [diff] [blame] | 1462 | extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask, |
| 1463 | unsigned long deadline); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1464 | extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes, |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1465 | unsigned long deadline); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1466 | extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class, |
| 1467 | unsigned long deadline); |
| 1468 | extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes); |
| 1469 | extern void ata_sff_error_handler(struct ata_port *ap); |
| 1470 | extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc); |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1471 | extern int ata_sff_port_start(struct ata_port *ap); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1472 | extern void ata_sff_std_ports(struct ata_ioports *ioaddr); |
| 1473 | extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev, |
| 1474 | unsigned long xfer_mask); |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1475 | extern void ata_bmdma_setup(struct ata_queued_cmd *qc); |
| 1476 | extern void ata_bmdma_start(struct ata_queued_cmd *qc); |
| 1477 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
| 1478 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 1479 | extern void ata_bus_reset(struct ata_port *ap); |
| 1480 | |
| 1481 | #ifdef CONFIG_PCI |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1482 | extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev); |
| 1483 | extern int ata_pci_bmdma_init(struct ata_host *host); |
| 1484 | extern int ata_pci_sff_init_host(struct ata_host *host); |
| 1485 | extern int ata_pci_sff_prepare_host(struct pci_dev *pdev, |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1486 | const struct ata_port_info * const * ppi, |
| 1487 | struct ata_host **r_host); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1488 | extern int ata_pci_sff_activate_host(struct ata_host *host, |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1489 | irq_handler_t irq_handler, |
| 1490 | struct scsi_host_template *sht); |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1491 | extern int ata_pci_sff_init_one(struct pci_dev *pdev, |
| 1492 | const struct ata_port_info * const * ppi, |
| 1493 | struct scsi_host_template *sht, void *host_priv); |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1494 | #endif /* CONFIG_PCI */ |
| 1495 | |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1496 | /** |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1497 | * ata_sff_busy_wait - Wait for a port status register |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1498 | * @ap: Port to wait for. |
| 1499 | * @bits: bits that must be clear |
| 1500 | * @max: number of 10uS waits to perform |
| 1501 | * |
| 1502 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 1503 | * status register to be cleared. |
| 1504 | * Returns final value of status register. |
| 1505 | * |
| 1506 | * LOCKING: |
| 1507 | * Inherited from caller. |
| 1508 | */ |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1509 | static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits, |
| 1510 | unsigned int max) |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1511 | { |
| 1512 | u8 status; |
| 1513 | |
| 1514 | do { |
| 1515 | udelay(10); |
Tejun Heo | 5682ed3 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1516 | status = ap->ops->sff_check_status(ap); |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1517 | max--; |
| 1518 | } while (status != 0xff && (status & bits) && (max > 0)); |
| 1519 | |
| 1520 | return status; |
| 1521 | } |
| 1522 | |
| 1523 | /** |
| 1524 | * ata_wait_idle - Wait for a port to be idle. |
| 1525 | * @ap: Port to wait for. |
| 1526 | * |
| 1527 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 1528 | * Returns final value of status register. |
| 1529 | * |
| 1530 | * LOCKING: |
| 1531 | * Inherited from caller. |
| 1532 | */ |
| 1533 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 1534 | { |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 1535 | u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1536 | |
| 1537 | #ifdef ATA_DEBUG |
| 1538 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
| 1539 | ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n", |
| 1540 | status); |
| 1541 | #endif |
| 1542 | |
| 1543 | return status; |
| 1544 | } |
Tejun Heo | 127102a | 2008-04-07 22:47:21 +0900 | [diff] [blame] | 1545 | #endif /* CONFIG_ATA_SFF */ |
Tejun Heo | 624d5c5 | 2008-03-25 22:16:41 +0900 | [diff] [blame] | 1546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | #endif /* __LINUX_LIBATA_H__ */ |