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> |
| 31 | #include <linux/pci.h> |
Andrew Morton | 1c72d8d | 2005-11-10 16:21:38 -0800 | [diff] [blame] | 32 | #include <linux/dma-mapping.h> |
Andrew Morton | 41542db | 2006-06-23 04:18:31 -0700 | [diff] [blame] | 33 | #include <asm/scatterlist.h> |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 34 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/ata.h> |
| 36 | #include <linux/workqueue.h> |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 37 | #include <scsi/scsi_host.h> |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 38 | #include <linux/acpi.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 | |
| 110 | /* move to PCI layer? */ |
| 111 | static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) |
| 112 | { |
| 113 | return &pdev->dev; |
| 114 | } |
| 115 | |
| 116 | enum { |
| 117 | /* various global constants */ |
| 118 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 119 | LIBATA_DUMB_MAX_PRD = ATA_MAX_PRD / 4, /* Worst case */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | ATA_MAX_PORTS = 8, |
| 121 | ATA_DEF_QUEUE = 1, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 122 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 123 | ATA_MAX_QUEUE = 32, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 124 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | ATA_MAX_BUS = 2, |
| 126 | ATA_DEF_BUSY_WAIT = 10000, |
| 127 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, |
| 128 | |
| 129 | ATA_SHT_EMULATED = 1, |
| 130 | ATA_SHT_CMD_PER_LUN = 1, |
| 131 | ATA_SHT_THIS_ID = -1, |
Jeff Garzik | cf48293 | 2005-10-22 00:19:33 -0400 | [diff] [blame] | 132 | ATA_SHT_USE_CLUSTERING = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | /* struct ata_device stuff */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 135 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
| 136 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
Jeff Garzik | 029f546 | 2006-04-02 10:30:40 -0400 | [diff] [blame] | 137 | 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] | 138 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
Tejun Heo | 6fc49ad | 2006-11-11 20:10:45 +0900 | [diff] [blame] | 139 | ATA_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */ |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 140 | ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ |
| 141 | ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ |
Tejun Heo | ea1dd4e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 142 | ATA_DFLAG_CFG_MASK = (1 << 8) - 1, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 143 | |
Tejun Heo | e5c9e08 | 2006-09-30 19:44:39 +0900 | [diff] [blame] | 144 | ATA_DFLAG_PIO = (1 << 8), /* device limited to PIO mode */ |
Tejun Heo | 3343571 | 2006-10-19 14:44:53 +0900 | [diff] [blame] | 145 | ATA_DFLAG_NCQ_OFF = (1 << 9), /* device limited to non-NCQ mode */ |
Tejun Heo | 13b8d09 | 2007-05-15 12:29:22 +0200 | [diff] [blame] | 146 | ATA_DFLAG_SPUNDOWN = (1 << 10), /* XXX: for spindown_compat */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 147 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 149 | ATA_DFLAG_DETACH = (1 << 16), |
| 150 | ATA_DFLAG_DETACHED = (1 << 17), |
| 151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 153 | ATA_DEV_ATA = 1, /* ATA device */ |
| 154 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 155 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 156 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
| 157 | ATA_DEV_NONE = 5, /* no device */ |
| 158 | |
| 159 | /* struct ata_port flags */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 160 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | /* (doesn't imply presence) */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 162 | ATA_FLAG_SATA = (1 << 1), |
| 163 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ |
| 164 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ |
| 165 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ |
| 166 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ |
| 167 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
| 168 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ |
| 169 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 170 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
| 171 | * doesn't handle PIO interrupts */ |
| 172 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 173 | ATA_FLAG_HRST_TO_RESUME = (1 << 11), /* hardreset to resume phy */ |
| 174 | ATA_FLAG_SKIP_D2H_BSY = (1 << 12), /* can't wait for the first D2H |
| 175 | * Register FIS clearing BSY */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 176 | ATA_FLAG_DEBUGMSG = (1 << 13), |
Tejun Heo | b2a8bbe | 2007-01-25 19:40:05 +0900 | [diff] [blame] | 177 | ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ |
Alan Cox | f834e49 | 2007-02-07 13:46:00 -0800 | [diff] [blame] | 178 | ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ |
Tejun Heo | 3cadbcc | 2007-05-15 03:28:15 +0900 | [diff] [blame] | 179 | ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 180 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 181 | /* The following flag belongs to ap->pflags but is kept in |
| 182 | * ap->flags because it's referenced in many LLDs and will be |
| 183 | * removed in not-too-distant future. |
| 184 | */ |
| 185 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 186 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 187 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 188 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 189 | /* struct ata_port pflags */ |
| 190 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
| 191 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
| 192 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
| 193 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
| 194 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
| 195 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ |
| 196 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
Tejun Heo | f4d6d00 | 2007-05-01 11:50:15 +0200 | [diff] [blame] | 197 | ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 198 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 199 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 200 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 201 | ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 202 | |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 203 | /* struct ata_queued_cmd flags */ |
| 204 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
| 205 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ |
| 206 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
Tejun Heo | 2719736 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 208 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 209 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
| 210 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 211 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
| 212 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ |
| 213 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Alan Cox | 4e5ec5d | 2006-03-27 18:42:40 +0100 | [diff] [blame] | 215 | /* host set flags */ |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 216 | 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] | 217 | ATA_HOST_STARTED = (1 << 1), /* Host started */ |
Jeff Garzik | 9bec2e3 | 2006-08-31 00:02:15 -0400 | [diff] [blame] | 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | /* various lengths of time */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 220 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
| 221 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 222 | ATA_TMOUT_INTERNAL = 30 * HZ, |
| 223 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
| 225 | /* ATA bus states */ |
| 226 | BUS_UNKNOWN = 0, |
| 227 | BUS_DMA = 1, |
| 228 | BUS_IDLE = 2, |
| 229 | BUS_NOINTR = 3, |
| 230 | BUS_NODATA = 4, |
| 231 | BUS_TIMER = 5, |
| 232 | BUS_PIO = 6, |
| 233 | BUS_EDD = 7, |
| 234 | BUS_IDENTIFY = 8, |
| 235 | BUS_PACKET = 9, |
| 236 | |
| 237 | /* SATA port states */ |
| 238 | PORT_UNKNOWN = 0, |
| 239 | PORT_ENABLED = 1, |
| 240 | PORT_DISABLED = 2, |
| 241 | |
| 242 | /* encoding various smaller bitmaps into a single |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 243 | * unsigned int bitmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | */ |
Alan Cox | b352e57 | 2006-08-10 18:52:12 +0100 | [diff] [blame] | 245 | ATA_BITS_PIO = 7, |
| 246 | ATA_BITS_MWDMA = 5, |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 247 | ATA_BITS_UDMA = 8, |
| 248 | |
| 249 | ATA_SHIFT_PIO = 0, |
| 250 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, |
| 251 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, |
| 252 | |
| 253 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, |
| 254 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, |
| 255 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 256 | |
| 257 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 258 | ATA_DMA_PAD_SZ = 4, |
| 259 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 260 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 261 | /* ering size */ |
| 262 | ATA_ERING_SIZE = 32, |
| 263 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 264 | /* desc_len for ata_eh_info and context */ |
| 265 | ATA_EH_DESC_LEN = 80, |
| 266 | |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 267 | /* reset / recovery action types */ |
| 268 | ATA_EH_REVALIDATE = (1 << 0), |
| 269 | ATA_EH_SOFTRESET = (1 << 1), |
| 270 | ATA_EH_HARDRESET = (1 << 2), |
| 271 | |
| 272 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
Tejun Heo | 9666f40 | 2007-05-04 21:27:47 +0200 | [diff] [blame] | 273 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE, |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 274 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 275 | /* ata_eh_info->flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 276 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
Tejun Heo | 13abf50 | 2006-07-10 23:18:46 +0900 | [diff] [blame] | 277 | ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 278 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
| 279 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 280 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 281 | ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ |
| 282 | ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ |
| 283 | ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */ |
| 284 | ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */ |
| 285 | ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 286 | |
Tejun Heo | 0d64a23 | 2007-04-23 02:41:05 +0900 | [diff] [blame] | 287 | ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET, |
Tejun Heo | 13abf50 | 2006-07-10 23:18:46 +0900 | [diff] [blame] | 288 | ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
| 289 | |
Tejun Heo | ad9e276 | 2006-05-15 20:58:12 +0900 | [diff] [blame] | 290 | /* max repeat if error condition is still set after ->error_handler */ |
| 291 | ATA_EH_MAX_REPEAT = 5, |
| 292 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 293 | /* how hard are we gonna try to probe/recover devices */ |
| 294 | ATA_PROBE_MAX_TRIES = 3, |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 295 | ATA_EH_DEV_TRIES = 3, |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 296 | |
Alan Cox | 9359085 | 2006-09-12 16:55:12 +0100 | [diff] [blame] | 297 | /* Horkage types. May be set by libata or controller on drives |
| 298 | (some horkage may be drive/controller pair dependant */ |
| 299 | |
| 300 | ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ |
Alan Cox | 6919a0a | 2006-10-27 19:08:46 -0700 | [diff] [blame] | 301 | ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ |
| 302 | ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */ |
Albert Lee | 18d6e9d | 2007-04-02 11:34:15 +0800 | [diff] [blame] | 303 | ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | }; |
| 305 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 306 | enum hsm_task_states { |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 307 | HSM_ST_IDLE, /* no command on going */ |
Albert Lee | 7152764 | 2007-04-02 11:28:52 +0800 | [diff] [blame] | 308 | HSM_ST_FIRST, /* (waiting the device to) |
| 309 | write CDB or first data block */ |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 310 | HSM_ST, /* (waiting the device to) transfer data */ |
| 311 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
Albert Lee | c56b14d | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 312 | HSM_ST_ERR, /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | }; |
| 314 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 315 | enum ata_completion_errors { |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 316 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 317 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 318 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 319 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 320 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 321 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 322 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 323 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 324 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
Tejun Heo | 55a8e2c | 2006-11-10 18:08:10 +0900 | [diff] [blame] | 325 | AC_ERR_NODEV_HINT = (1 << 9), /* polling device detection hint */ |
Tejun Heo | 5335b72 | 2007-07-16 14:29:40 +0900 | [diff] [blame^] | 326 | AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 327 | }; |
| 328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | /* forward declarations */ |
| 330 | struct scsi_device; |
| 331 | struct ata_port_operations; |
| 332 | struct ata_port; |
| 333 | struct ata_queued_cmd; |
| 334 | |
| 335 | /* typedefs */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 336 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 337 | typedef int (*ata_prereset_fn_t)(struct ata_port *ap, unsigned long deadline); |
| 338 | typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes, |
| 339 | unsigned long deadline); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 340 | typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
| 342 | struct ata_ioports { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 343 | void __iomem *cmd_addr; |
| 344 | void __iomem *data_addr; |
| 345 | void __iomem *error_addr; |
| 346 | void __iomem *feature_addr; |
| 347 | void __iomem *nsect_addr; |
| 348 | void __iomem *lbal_addr; |
| 349 | void __iomem *lbam_addr; |
| 350 | void __iomem *lbah_addr; |
| 351 | void __iomem *device_addr; |
| 352 | void __iomem *status_addr; |
| 353 | void __iomem *command_addr; |
| 354 | void __iomem *altstatus_addr; |
| 355 | void __iomem *ctl_addr; |
| 356 | void __iomem *bmdma_addr; |
| 357 | void __iomem *scr_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | }; |
| 359 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 360 | struct ata_host { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | spinlock_t lock; |
| 362 | struct device *dev; |
| 363 | unsigned long irq; |
Alan Cox | 2ec7df0 | 2006-08-10 16:59:10 +0900 | [diff] [blame] | 364 | unsigned long irq2; |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 365 | void __iomem * const *iomap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | unsigned int n_ports; |
| 367 | void *private_data; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 368 | const struct ata_port_operations *ops; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 369 | unsigned long flags; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 370 | #ifdef CONFIG_ATA_ACPI |
| 371 | acpi_handle acpi_handle; |
| 372 | #endif |
Alan | 032af1c | 2007-03-01 17:36:46 +0000 | [diff] [blame] | 373 | struct ata_port *simplex_claimed; /* channel owning the DMA */ |
Tejun Heo | f0eb62b | 2006-06-12 23:05:38 +0900 | [diff] [blame] | 374 | struct ata_port *ports[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | }; |
| 376 | |
| 377 | struct ata_queued_cmd { |
| 378 | struct ata_port *ap; |
| 379 | struct ata_device *dev; |
| 380 | |
| 381 | struct scsi_cmnd *scsicmd; |
| 382 | void (*scsidone)(struct scsi_cmnd *); |
| 383 | |
| 384 | struct ata_taskfile tf; |
| 385 | u8 cdb[ATAPI_CDB_LEN]; |
| 386 | |
| 387 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 388 | unsigned int tag; |
| 389 | unsigned int n_elem; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 390 | unsigned int orig_n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
| 392 | int dma_dir; |
| 393 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 394 | unsigned int pad_len; |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 395 | unsigned int sect_size; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | unsigned int nbytes; |
| 398 | unsigned int curbytes; |
| 399 | |
| 400 | unsigned int cursg; |
| 401 | unsigned int cursg_ofs; |
| 402 | |
| 403 | struct scatterlist sgent; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 404 | struct scatterlist pad_sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | void *buf_virt; |
| 406 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 407 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
| 408 | struct scatterlist *__sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 410 | unsigned int err_mask; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 411 | struct ata_taskfile result_tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | ata_qc_cb_t complete_fn; |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | void *private_data; |
| 415 | }; |
| 416 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 417 | struct ata_port_stats { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | unsigned long unhandled_irq; |
| 419 | unsigned long idle_irq; |
| 420 | unsigned long rw_reqbuf; |
| 421 | }; |
| 422 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 423 | struct ata_ering_entry { |
| 424 | int is_io; |
| 425 | unsigned int err_mask; |
| 426 | u64 timestamp; |
| 427 | }; |
| 428 | |
| 429 | struct ata_ering { |
| 430 | int cursor; |
| 431 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
| 432 | }; |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | struct ata_device { |
Tejun Heo | 38d8723 | 2006-05-15 20:57:51 +0900 | [diff] [blame] | 435 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | unsigned int devno; /* 0 or 1 */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 437 | unsigned long flags; /* ATA_DFLAG_xxx */ |
Tejun Heo | 75683fe | 2007-07-05 13:31:27 +0900 | [diff] [blame] | 438 | unsigned int horkage; /* List of broken features */ |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 439 | struct scsi_device *sdev; /* attached SCSI device */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 440 | #ifdef CONFIG_ATA_ACPI |
| 441 | acpi_handle acpi_handle; |
| 442 | #endif |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 443 | /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ |
| 444 | u64 n_sectors; /* size of device, if ATA */ |
| 445 | unsigned int class; /* ATA_DEV_xxx */ |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 446 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | u8 pio_mode; |
| 448 | u8 dma_mode; |
| 449 | u8 xfer_mode; |
| 450 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
| 451 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 452 | unsigned int multi_count; /* sectors count for |
| 453 | READ/WRITE MULTIPLE */ |
Tejun Heo | b00eec1 | 2006-02-12 23:32:59 +0900 | [diff] [blame] | 454 | unsigned int max_sectors; /* per-device max sectors */ |
Tejun Heo | 6e7846e | 2006-02-12 23:32:58 +0900 | [diff] [blame] | 455 | unsigned int cdb_len; |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 456 | |
Tejun Heo | acf356b | 2006-03-24 14:07:50 +0900 | [diff] [blame] | 457 | /* per-dev xfer mask */ |
| 458 | unsigned int pio_mask; |
| 459 | unsigned int mwdma_mask; |
| 460 | unsigned int udma_mask; |
| 461 | |
Albert Lee | 8bf62ec | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 462 | /* for CHS addressing */ |
| 463 | u16 cylinders; /* Number of cylinders */ |
| 464 | u16 heads; /* Number of heads */ |
| 465 | u16 sectors; /* Number of sectors per track */ |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 466 | |
| 467 | /* error history */ |
| 468 | struct ata_ering ering; |
Tejun Heo | 7d47e8d | 2007-02-02 16:22:31 +0900 | [diff] [blame] | 469 | int spdn_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | }; |
| 471 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 472 | /* Offset into struct ata_device. Fields above it are maintained |
| 473 | * acress device init. Fields below are zeroed. |
| 474 | */ |
| 475 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) |
| 476 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 477 | struct ata_eh_info { |
| 478 | struct ata_device *dev; /* offending device */ |
| 479 | u32 serror; /* SError from LLDD */ |
| 480 | unsigned int err_mask; /* port-wide err_mask */ |
| 481 | unsigned int action; /* ATA_EH_* action mask */ |
Tejun Heo | 47005f2 | 2006-06-19 18:27:23 +0900 | [diff] [blame] | 482 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 483 | unsigned int flags; /* ATA_EHI_* flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 484 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 485 | unsigned int probe_mask; |
| 486 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 487 | char desc[ATA_EH_DESC_LEN]; |
| 488 | int desc_len; |
| 489 | }; |
| 490 | |
| 491 | struct ata_eh_context { |
| 492 | struct ata_eh_info i; |
| 493 | int tries[ATA_MAX_DEVICES]; |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 494 | unsigned int classes[ATA_MAX_DEVICES]; |
| 495 | unsigned int did_probe_mask; |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 496 | }; |
| 497 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 498 | struct ata_acpi_drive |
| 499 | { |
| 500 | u32 pio; |
| 501 | u32 dma; |
| 502 | } __packed; |
| 503 | |
| 504 | struct ata_acpi_gtm { |
| 505 | struct ata_acpi_drive drive[2]; |
| 506 | u32 flags; |
| 507 | } __packed; |
| 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | struct ata_port { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 510 | struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 511 | const struct ata_port_operations *ops; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 512 | spinlock_t *lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | unsigned long flags; /* ATA_FLAG_xxx */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 514 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 515 | unsigned int print_id; /* user visible unique port ID */ |
| 516 | unsigned int port_no; /* 0 based port no. inside the host */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | struct ata_prd *prd; /* our SG list */ |
| 519 | dma_addr_t prd_dma; /* and its DMA mapping */ |
| 520 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 521 | void *pad; /* array of DMA pad buffers */ |
| 522 | dma_addr_t pad_dma; |
| 523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
| 525 | |
| 526 | u8 ctl; /* cache of ATA control register */ |
| 527 | u8 last_ctl; /* Cache last written value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | unsigned int pio_mask; |
| 529 | unsigned int mwdma_mask; |
| 530 | unsigned int udma_mask; |
| 531 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 532 | unsigned int hw_sata_spd_limit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 533 | unsigned int sata_spd_limit; /* SATA PHY speed limit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 535 | /* record runtime error info, protected by host lock */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 536 | struct ata_eh_info eh_info; |
| 537 | /* EH context owned by EH */ |
| 538 | struct ata_eh_context eh_context; |
| 539 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | struct ata_device device[ATA_MAX_DEVICES]; |
| 541 | |
| 542 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 543 | unsigned long qc_allocated; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 544 | unsigned int qc_active; |
| 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | unsigned int active_tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 547 | u32 sactive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 549 | struct ata_port_stats stats; |
| 550 | struct ata_host *host; |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 551 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 553 | void *port_task_data; |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 554 | struct delayed_work port_task; |
| 555 | struct delayed_work hotplug_task; |
Jeff Garzik | 3b01b8a | 2006-06-12 00:22:04 -0400 | [diff] [blame] | 556 | struct work_struct scsi_rescan_task; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 557 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 558 | unsigned int hsm_task_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 560 | u32 msg_enable; |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 561 | struct list_head eh_done_q; |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 562 | wait_queue_head_t eh_wait_q; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 563 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 564 | pm_message_t pm_mesg; |
| 565 | int *pm_result; |
| 566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | void *private_data; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 568 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 569 | #ifdef CONFIG_ATA_ACPI |
| 570 | acpi_handle acpi_handle; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 571 | struct ata_acpi_gtm acpi_gtm; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 572 | #endif |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 573 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | }; |
| 575 | |
| 576 | struct ata_port_operations { |
| 577 | void (*port_disable) (struct ata_port *); |
| 578 | |
Alan | cd0d3bb | 2007-03-02 00:56:15 +0000 | [diff] [blame] | 579 | void (*dev_config) (struct ata_device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
| 581 | void (*set_piomode) (struct ata_port *, struct ata_device *); |
| 582 | void (*set_dmamode) (struct ata_port *, struct ata_device *); |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 583 | unsigned long (*mode_filter) (struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 585 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
| 587 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 588 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | u8 (*check_status)(struct ata_port *ap); |
| 590 | u8 (*check_altstatus)(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
| 592 | |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 593 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 594 | int (*set_mode) (struct ata_port *ap, struct ata_device **r_failed_dev); |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 595 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 596 | int (*cable_detect) (struct ata_port *ap); |
| 597 | |
Alan | b229a7b | 2007-01-24 11:47:07 +0000 | [diff] [blame] | 598 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | void (*bmdma_setup) (struct ata_queued_cmd *qc); |
| 601 | void (*bmdma_start) (struct ata_queued_cmd *qc); |
| 602 | |
Alan Cox | a6b2c5d | 2006-05-22 16:59:59 +0100 | [diff] [blame] | 603 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
| 604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | void (*qc_prep) (struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 606 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 608 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
| 609 | * indicates that new-style EH is in place. |
| 610 | */ |
| 611 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ |
| 612 | |
| 613 | void (*freeze) (struct ata_port *ap); |
| 614 | void (*thaw) (struct ata_port *ap); |
| 615 | void (*error_handler) (struct ata_port *ap); |
| 616 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 618 | irq_handler_t irq_handler; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | void (*irq_clear) (struct ata_port *); |
Akira Iguchi | 8362500 | 2007-01-26 16:27:32 +0900 | [diff] [blame] | 620 | u8 (*irq_on) (struct ata_port *); |
| 621 | u8 (*irq_ack) (struct ata_port *ap, unsigned int chk_drq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
| 623 | u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg); |
| 624 | void (*scr_write) (struct ata_port *ap, unsigned int sc_reg, |
| 625 | u32 val); |
| 626 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 627 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
| 628 | int (*port_resume) (struct ata_port *ap); |
| 629 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | int (*port_start) (struct ata_port *ap); |
| 631 | void (*port_stop) (struct ata_port *ap); |
| 632 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 633 | void (*host_stop) (struct ata_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 635 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | u8 (*bmdma_status) (struct ata_port *ap); |
| 637 | }; |
| 638 | |
| 639 | struct ata_port_info { |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 640 | struct scsi_host_template *sht; |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 641 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | unsigned long pio_mask; |
| 643 | unsigned long mwdma_mask; |
| 644 | unsigned long udma_mask; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 645 | const struct ata_port_operations *port_ops; |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 646 | irq_handler_t irq_handler; |
Alan Cox | e99f8b5 | 2005-11-08 14:09:44 +0000 | [diff] [blame] | 647 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | }; |
| 649 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 650 | struct ata_timing { |
| 651 | unsigned short mode; /* ATA mode */ |
| 652 | unsigned short setup; /* t1 */ |
| 653 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 654 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 655 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 656 | unsigned short active; /* t2 or tD */ |
| 657 | unsigned short recover; /* t2i or tK */ |
| 658 | unsigned short cycle; /* t0 */ |
| 659 | unsigned short udma; /* t2CYCTYP/2 */ |
| 660 | }; |
| 661 | |
| 662 | #define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 664 | extern const unsigned long sata_deb_timing_normal[]; |
| 665 | extern const unsigned long sata_deb_timing_hotplug[]; |
| 666 | extern const unsigned long sata_deb_timing_long[]; |
| 667 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 668 | extern const struct ata_port_operations ata_dummy_port_ops; |
Tejun Heo | 21b0ad4 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 669 | extern const struct ata_port_info ata_dummy_port_info; |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 670 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 671 | static inline const unsigned long * |
| 672 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
| 673 | { |
| 674 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
| 675 | return sata_deb_timing_hotplug; |
| 676 | else |
| 677 | return sata_deb_timing_normal; |
| 678 | } |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 679 | |
Tejun Heo | dd5b06c | 2006-08-10 16:59:12 +0900 | [diff] [blame] | 680 | static inline int ata_port_is_dummy(struct ata_port *ap) |
| 681 | { |
| 682 | return ap->ops == &ata_dummy_port_ops; |
| 683 | } |
| 684 | |
Jeff Garzik | 43727fb | 2007-02-25 16:50:52 -0500 | [diff] [blame] | 685 | extern void sata_print_link_status(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | extern void ata_port_probe(struct ata_port *); |
| 687 | extern void __sata_phy_reset(struct ata_port *ap); |
| 688 | extern void sata_phy_reset(struct ata_port *ap); |
| 689 | extern void ata_bus_reset(struct ata_port *ap); |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 690 | extern int sata_set_spd(struct ata_port *ap); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 691 | extern int sata_phy_debounce(struct ata_port *ap, const unsigned long *param, |
| 692 | unsigned long deadline); |
| 693 | extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param, |
| 694 | unsigned long deadline); |
| 695 | extern int ata_std_prereset(struct ata_port *ap, unsigned long deadline); |
| 696 | extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes, |
| 697 | unsigned long deadline); |
| 698 | extern int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing, |
| 699 | unsigned long deadline); |
| 700 | extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class, |
| 701 | unsigned long deadline); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 702 | extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | extern void ata_port_disable(struct ata_port *); |
| 704 | extern void ata_std_ports(struct ata_ioports *ioaddr); |
| 705 | #ifdef CONFIG_PCI |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 706 | extern int ata_pci_init_one (struct pci_dev *pdev, |
| 707 | const struct ata_port_info * const * ppi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | extern void ata_pci_remove_one (struct pci_dev *pdev); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 709 | #ifdef CONFIG_PM |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 710 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); |
Tejun Heo | 553c4aa | 2006-12-26 19:39:50 +0900 | [diff] [blame] | 711 | extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); |
Tejun Heo | 3c5100c | 2006-07-26 16:58:33 +0900 | [diff] [blame] | 712 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 713 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 714 | #endif |
Jeff Garzik | 17bb34a | 2006-03-21 21:29:21 -0500 | [diff] [blame] | 715 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | #endif /* CONFIG_PCI */ |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 717 | 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] | 718 | extern struct ata_host *ata_host_alloc_pinfo(struct device *dev, |
| 719 | const struct ata_port_info * const * ppi, int n_ports); |
Tejun Heo | ecef725 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 720 | extern int ata_host_start(struct ata_host *host); |
Tejun Heo | f318719 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 721 | extern int ata_host_register(struct ata_host *host, |
| 722 | struct scsi_host_template *sht); |
Tejun Heo | f5cda25 | 2007-04-17 23:44:07 +0900 | [diff] [blame] | 723 | extern int ata_host_activate(struct ata_host *host, int irq, |
| 724 | irq_handler_t irq_handler, unsigned long irq_flags, |
| 725 | struct scsi_host_template *sht); |
Tejun Heo | 0529c15 | 2007-01-20 16:00:26 +0900 | [diff] [blame] | 726 | extern void ata_host_detach(struct ata_host *host); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 727 | extern void ata_host_init(struct ata_host *, struct device *, |
| 728 | unsigned long, const struct ata_port_operations *); |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 729 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 731 | 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] | 732 | extern void ata_sas_port_destroy(struct ata_port *); |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 733 | extern struct ata_port *ata_sas_port_alloc(struct ata_host *, |
Brian King | 8028916 | 2006-08-07 14:27:31 -0500 | [diff] [blame] | 734 | struct ata_port_info *, struct Scsi_Host *); |
| 735 | extern int ata_sas_port_init(struct ata_port *); |
| 736 | extern int ata_sas_port_start(struct ata_port *ap); |
| 737 | extern void ata_sas_port_stop(struct ata_port *ap); |
| 738 | extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); |
| 739 | extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), |
| 740 | struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
Tejun Heo | 34bf217 | 2006-05-15 20:57:46 +0900 | [diff] [blame] | 742 | extern int sata_scr_valid(struct ata_port *ap); |
| 743 | extern int sata_scr_read(struct ata_port *ap, int reg, u32 *val); |
| 744 | extern int sata_scr_write(struct ata_port *ap, int reg, u32 val); |
| 745 | extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val); |
| 746 | extern int ata_port_online(struct ata_port *ap); |
| 747 | extern int ata_port_offline(struct ata_port *ap); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 748 | #ifdef CONFIG_PM |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 749 | extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); |
| 750 | extern void ata_host_resume(struct ata_host *host); |
Tejun Heo | 6ffa01d | 2007-03-02 17:32:47 +0900 | [diff] [blame] | 751 | #endif |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 752 | extern int ata_ratelimit(void); |
Tejun Heo | d1adc1b | 2006-10-09 18:32:15 +0900 | [diff] [blame] | 753 | extern int ata_busy_sleep(struct ata_port *ap, |
| 754 | unsigned long timeout_pat, unsigned long timeout); |
Tejun Heo | d4b2bab | 2007-02-02 16:50:52 +0900 | [diff] [blame] | 755 | extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 756 | extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 757 | void *data, unsigned long delay); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 758 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
| 759 | unsigned long interval_msec, |
| 760 | unsigned long timeout_msec); |
Akira Iguchi | a619f981b | 2007-01-26 16:28:18 +0900 | [diff] [blame] | 761 | extern unsigned int ata_dev_try_classify(struct ata_port *, unsigned int, u8 *); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | /* |
| 764 | * Default driver ops implementations |
| 765 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 766 | extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
Tejun Heo | 9977126 | 2007-07-16 14:29:38 +0900 | [diff] [blame] | 768 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, |
| 769 | u8 pmp, int is_cmd, u8 *fis); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 770 | extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); |
| 772 | extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); |
| 773 | extern u8 ata_check_status(struct ata_port *ap); |
| 774 | extern u8 ata_altstatus(struct ata_port *ap); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 775 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | extern int ata_port_start (struct ata_port *ap); |
Alan Cox | d92e74d | 2007-06-07 16:19:15 +0100 | [diff] [blame] | 777 | extern int ata_sff_port_start (struct ata_port *ap); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 778 | extern irqreturn_t ata_interrupt (int irq, void *dev_instance); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 779 | extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, |
| 780 | unsigned int buflen, int write_data); |
| 781 | extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, |
| 782 | unsigned int buflen, int write_data); |
Alan Cox | d26fc95 | 2007-07-06 19:13:52 -0400 | [diff] [blame] | 783 | extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 785 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 786 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
| 788 | unsigned int buflen); |
| 789 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 790 | unsigned int n_elem); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 791 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 792 | extern void ata_dev_disable(struct ata_device *adev); |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 793 | extern void ata_id_string(const u16 *id, unsigned char *s, |
| 794 | unsigned int ofs, unsigned int len); |
| 795 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
| 796 | unsigned int ofs, unsigned int len); |
Alan | 10305f0 | 2007-02-20 18:01:59 +0000 | [diff] [blame] | 797 | extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | extern void ata_bmdma_setup (struct ata_queued_cmd *qc); |
| 799 | extern void ata_bmdma_start (struct ata_queued_cmd *qc); |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 800 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 802 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
Tejun Heo | 6d97dbd | 2006-05-15 20:58:24 +0900 | [diff] [blame] | 803 | extern void ata_bmdma_freeze(struct ata_port *ap); |
| 804 | extern void ata_bmdma_thaw(struct ata_port *ap); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 805 | extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
Tejun Heo | 6d97dbd | 2006-05-15 20:58:24 +0900 | [diff] [blame] | 806 | ata_reset_fn_t softreset, |
| 807 | ata_reset_fn_t hardreset, |
| 808 | ata_postreset_fn_t postreset); |
| 809 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
| 810 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); |
Tejun Heo | 9a1004d | 2006-05-31 18:27:52 +0900 | [diff] [blame] | 811 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
| 812 | u8 status, int in_wq); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 813 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 814 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
| 815 | void (*finish_qc)(struct ata_queued_cmd *)); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 816 | 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] | 817 | void (*done)(struct scsi_cmnd *)); |
| 818 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 819 | struct block_device *bdev, |
| 820 | sector_t capacity, int geom[]); |
| 821 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 822 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 823 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
| 824 | int queue_depth); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 825 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
Alan | 0435182 | 2007-03-06 02:37:52 -0800 | [diff] [blame] | 826 | extern int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev); |
Akira Iguchi | 8362500 | 2007-01-26 16:27:32 +0900 | [diff] [blame] | 827 | extern u8 ata_irq_on(struct ata_port *ap); |
| 828 | extern u8 ata_dummy_irq_on(struct ata_port *ap); |
| 829 | extern u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq); |
| 830 | extern u8 ata_dummy_irq_ack(struct ata_port *ap, unsigned int chk_drq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | |
Alan Cox | be0d18d | 2007-03-06 02:37:56 -0800 | [diff] [blame] | 832 | extern int ata_cable_40wire(struct ata_port *ap); |
| 833 | extern int ata_cable_80wire(struct ata_port *ap); |
| 834 | extern int ata_cable_sata(struct ata_port *ap); |
| 835 | extern int ata_cable_unknown(struct ata_port *ap); |
| 836 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 837 | /* |
| 838 | * Timing helpers |
| 839 | */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 840 | |
| 841 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 842 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 843 | struct ata_timing *, int, int); |
| 844 | extern void ata_timing_merge(const struct ata_timing *, |
| 845 | const struct ata_timing *, struct ata_timing *, |
| 846 | unsigned int); |
| 847 | |
| 848 | enum { |
| 849 | ATA_TIMING_SETUP = (1 << 0), |
| 850 | ATA_TIMING_ACT8B = (1 << 1), |
| 851 | ATA_TIMING_REC8B = (1 << 2), |
| 852 | ATA_TIMING_CYC8B = (1 << 3), |
| 853 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 854 | ATA_TIMING_CYC8B, |
| 855 | ATA_TIMING_ACTIVE = (1 << 4), |
| 856 | ATA_TIMING_RECOVER = (1 << 5), |
| 857 | ATA_TIMING_CYCLE = (1 << 6), |
| 858 | ATA_TIMING_UDMA = (1 << 7), |
| 859 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 860 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 861 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 862 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, |
| 863 | }; |
| 864 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | |
| 866 | #ifdef CONFIG_PCI |
| 867 | struct pci_bits { |
| 868 | unsigned int reg; /* PCI config register to read */ |
| 869 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 870 | unsigned long mask; |
| 871 | unsigned long val; |
| 872 | }; |
| 873 | |
Tejun Heo | d583bc1 | 2007-07-04 18:02:07 +0900 | [diff] [blame] | 874 | extern int ata_pci_init_sff_host(struct ata_host *host); |
Tejun Heo | 1626aeb | 2007-05-04 12:43:58 +0200 | [diff] [blame] | 875 | extern int ata_pci_init_bmdma(struct ata_host *host); |
Tejun Heo | d583bc1 | 2007-07-04 18:02:07 +0900 | [diff] [blame] | 876 | extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, |
| 877 | const struct ata_port_info * const * ppi, |
| 878 | struct ata_host **r_host); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 879 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
Alan Cox | a76b62c | 2007-03-09 09:34:07 -0500 | [diff] [blame] | 880 | extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | #endif /* CONFIG_PCI */ |
| 882 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 883 | /* |
| 884 | * EH |
| 885 | */ |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 886 | extern void ata_eng_timeout(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 887 | |
| 888 | extern void ata_port_schedule_eh(struct ata_port *ap); |
| 889 | extern int ata_port_abort(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 890 | extern int ata_port_freeze(struct ata_port *ap); |
| 891 | |
| 892 | extern void ata_eh_freeze_port(struct ata_port *ap); |
| 893 | extern void ata_eh_thaw_port(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 894 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 895 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 896 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
| 897 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 898 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
| 899 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 900 | ata_postreset_fn_t postreset); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 901 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 902 | /* |
| 903 | * printk helpers |
| 904 | */ |
| 905 | #define ata_port_printk(ap, lv, fmt, args...) \ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 906 | printk(lv"ata%u: "fmt, (ap)->print_id , ##args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 908 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
Tejun Heo | 44877b4 | 2007-02-21 01:06:51 +0900 | [diff] [blame] | 909 | printk(lv"ata%u.%02u: "fmt, (dev)->ap->print_id, (dev)->devno , ##args) |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 910 | |
| 911 | /* |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 912 | * ata_eh_info helpers |
| 913 | */ |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 914 | extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
| 915 | extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); |
| 916 | extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 917 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 918 | static inline void __ata_ehi_hotplugged(struct ata_eh_info *ehi) |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 919 | { |
Tejun Heo | 2832430 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 920 | ehi->flags |= ATA_EHI_HOTPLUGGED | ATA_EHI_RESUME_LINK; |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 921 | ehi->action |= ATA_EH_SOFTRESET; |
| 922 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
| 923 | } |
| 924 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 925 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
| 926 | { |
| 927 | __ata_ehi_hotplugged(ehi); |
| 928 | ehi->err_mask |= AC_ERR_ATA_BUS; |
| 929 | } |
| 930 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 931 | /* |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 932 | * qc helpers |
| 933 | */ |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 934 | static inline int |
| 935 | ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 936 | { |
| 937 | if (sg == &qc->pad_sgent) |
| 938 | return 1; |
| 939 | if (qc->pad_len) |
| 940 | return 0; |
| 941 | if (((sg - qc->__sg) + 1) == qc->n_elem) |
| 942 | return 1; |
| 943 | return 0; |
| 944 | } |
| 945 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 946 | static inline struct scatterlist * |
Tejun Heo | cc1887f | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 947 | ata_qc_first_sg(struct ata_queued_cmd *qc) |
| 948 | { |
| 949 | if (qc->n_elem) |
| 950 | return qc->__sg; |
| 951 | if (qc->pad_len) |
| 952 | return &qc->pad_sgent; |
| 953 | return NULL; |
| 954 | } |
| 955 | |
| 956 | static inline struct scatterlist * |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 957 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 958 | { |
| 959 | if (sg == &qc->pad_sgent) |
| 960 | return NULL; |
| 961 | if (++sg - qc->__sg < qc->n_elem) |
| 962 | return sg; |
Tejun Heo | cc1887f | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 963 | if (qc->pad_len) |
| 964 | return &qc->pad_sgent; |
| 965 | return NULL; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 966 | } |
| 967 | |
| 968 | #define ata_for_each_sg(sg, qc) \ |
Tejun Heo | cc1887f | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 969 | for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 970 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 972 | { |
| 973 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 974 | } |
| 975 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 976 | static inline unsigned int ata_tag_internal(unsigned int tag) |
| 977 | { |
| 978 | return tag == ATA_MAX_QUEUE - 1; |
| 979 | } |
| 980 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 981 | /* |
| 982 | * device helpers |
| 983 | */ |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 984 | static inline unsigned int ata_class_enabled(unsigned int class) |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 985 | { |
| 986 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; |
| 987 | } |
| 988 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 989 | static inline unsigned int ata_class_disabled(unsigned int class) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | { |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 991 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP; |
| 992 | } |
| 993 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 994 | static inline unsigned int ata_class_absent(unsigned int class) |
| 995 | { |
| 996 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
| 997 | } |
| 998 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 999 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
| 1000 | { |
| 1001 | return ata_class_enabled(dev->class); |
| 1002 | } |
| 1003 | |
| 1004 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
| 1005 | { |
| 1006 | return ata_class_disabled(dev->class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | } |
| 1008 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 1009 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
| 1010 | { |
| 1011 | return ata_class_absent(dev->class); |
| 1012 | } |
| 1013 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 1014 | /* |
| 1015 | * port helpers |
| 1016 | */ |
| 1017 | static inline int ata_port_max_devices(const struct ata_port *ap) |
| 1018 | { |
| 1019 | if (ap->flags & ATA_FLAG_SLAVE_POSS) |
| 1020 | return 2; |
| 1021 | return 1; |
| 1022 | } |
| 1023 | |
| 1024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | static inline u8 ata_chk_status(struct ata_port *ap) |
| 1026 | { |
| 1027 | return ap->ops->check_status(ap); |
| 1028 | } |
| 1029 | |
Tejun Heo | 6d1245b | 2007-02-20 23:20:27 +0900 | [diff] [blame] | 1030 | /** |
| 1031 | * ata_ncq_enabled - Test whether NCQ is enabled |
| 1032 | * @dev: ATA device to test for |
| 1033 | * |
| 1034 | * LOCKING: |
| 1035 | * spin_lock_irqsave(host lock) |
| 1036 | * |
| 1037 | * RETURNS: |
| 1038 | * 1 if NCQ is enabled for @dev, 0 otherwise. |
| 1039 | */ |
| 1040 | static inline int ata_ncq_enabled(struct ata_device *dev) |
| 1041 | { |
| 1042 | return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | |
| 1043 | ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; |
| 1044 | } |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1045 | |
| 1046 | /** |
| 1047 | * ata_pause - Flush writes and pause 400 nanoseconds. |
| 1048 | * @ap: Port to wait for. |
| 1049 | * |
| 1050 | * LOCKING: |
| 1051 | * Inherited from caller. |
| 1052 | */ |
| 1053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | static inline void ata_pause(struct ata_port *ap) |
| 1055 | { |
| 1056 | ata_altstatus(ap); |
| 1057 | ndelay(400); |
| 1058 | } |
| 1059 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1060 | |
| 1061 | /** |
| 1062 | * ata_busy_wait - Wait for a port status register |
| 1063 | * @ap: Port to wait for. |
Alan | 0777721 | 2007-01-31 17:47:24 +0000 | [diff] [blame] | 1064 | * @bits: bits that must be clear |
| 1065 | * @max: number of 10uS waits to perform |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1066 | * |
| 1067 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 1068 | * status register to be cleared. |
| 1069 | * Returns final value of status register. |
| 1070 | * |
| 1071 | * LOCKING: |
| 1072 | * Inherited from caller. |
| 1073 | */ |
| 1074 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
| 1076 | unsigned int max) |
| 1077 | { |
| 1078 | u8 status; |
| 1079 | |
| 1080 | do { |
| 1081 | udelay(10); |
| 1082 | status = ata_chk_status(ap); |
| 1083 | max--; |
Tejun Heo | d1adc1b | 2006-10-09 18:32:15 +0900 | [diff] [blame] | 1084 | } while (status != 0xff && (status & bits) && (max > 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | |
| 1086 | return status; |
| 1087 | } |
| 1088 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1089 | |
| 1090 | /** |
| 1091 | * ata_wait_idle - Wait for a port to be idle. |
| 1092 | * @ap: Port to wait for. |
| 1093 | * |
| 1094 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 1095 | * Returns final value of status register. |
| 1096 | * |
| 1097 | * LOCKING: |
| 1098 | * Inherited from caller. |
| 1099 | */ |
| 1100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 1102 | { |
| 1103 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
| 1104 | |
Tejun Heo | 55f3952 | 2007-06-25 21:31:05 +0900 | [diff] [blame] | 1105 | if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) |
| 1106 | DPRINTK("ATA: abnormal status 0x%X on port 0x%p\n", |
| 1107 | status, ap->ioaddr.status_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
| 1109 | return status; |
| 1110 | } |
| 1111 | |
| 1112 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
| 1113 | { |
| 1114 | qc->tf.ctl |= ATA_NIEN; |
| 1115 | } |
| 1116 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1117 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
| 1118 | unsigned int tag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | { |
| 1120 | if (likely(ata_tag_valid(tag))) |
| 1121 | return &ap->qcmd[tag]; |
| 1122 | return NULL; |
| 1123 | } |
| 1124 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1125 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
| 1126 | unsigned int tag) |
| 1127 | { |
| 1128 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); |
| 1129 | |
| 1130 | if (unlikely(!qc) || !ap->ops->error_handler) |
| 1131 | return qc; |
| 1132 | |
| 1133 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | |
| 1134 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) |
| 1135 | return qc; |
| 1136 | |
| 1137 | return NULL; |
| 1138 | } |
| 1139 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1140 | 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] | 1141 | { |
| 1142 | memset(tf, 0, sizeof(*tf)); |
| 1143 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1144 | tf->ctl = dev->ap->ctl; |
| 1145 | if (dev->devno == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | tf->device = ATA_DEVICE_OBS; |
| 1147 | else |
| 1148 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 1149 | } |
| 1150 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1151 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 1152 | { |
Tejun Heo | 501e0c5 | 2007-01-17 11:34:02 +0900 | [diff] [blame] | 1153 | qc->dma_dir = DMA_NONE; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1154 | qc->__sg = NULL; |
| 1155 | qc->flags = 0; |
Tejun Heo | 726f078 | 2007-01-03 17:30:39 +0900 | [diff] [blame] | 1156 | qc->cursg = qc->cursg_ofs = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1157 | qc->nbytes = qc->curbytes = 0; |
Brian King | 7a80118 | 2007-01-17 12:32:12 -0600 | [diff] [blame] | 1158 | qc->n_elem = 0; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1159 | qc->err_mask = 0; |
Brian King | d0f2948 | 2007-01-17 12:32:28 -0600 | [diff] [blame] | 1160 | qc->pad_len = 0; |
Mark Lord | 5a5dbd1 | 2007-03-16 10:22:26 -0400 | [diff] [blame] | 1161 | qc->sect_size = ATA_SECT_SIZE; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1162 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1163 | ata_tf_init(qc->dev, &qc->tf); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1164 | |
| 1165 | /* init result_tf such that it indicates normal completion */ |
| 1166 | qc->result_tf.command = ATA_DRDY; |
| 1167 | qc->result_tf.feature = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1168 | } |
| 1169 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1170 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | { |
| 1172 | return ata_id_wcache_enabled(dev->id) || |
| 1173 | ata_id_has_flush(dev->id) || |
| 1174 | ata_id_has_flush_ext(dev->id); |
| 1175 | } |
| 1176 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1177 | static inline unsigned int ac_err_mask(u8 status) |
| 1178 | { |
Albert Lee | 3655d1d | 2006-05-19 11:43:04 +0800 | [diff] [blame] | 1179 | if (status & (ATA_BUSY | ATA_DRQ)) |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1180 | return AC_ERR_HSM; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1181 | if (status & (ATA_ERR | ATA_DF)) |
| 1182 | return AC_ERR_DEV; |
| 1183 | return 0; |
| 1184 | } |
| 1185 | |
| 1186 | static inline unsigned int __ac_err_mask(u8 status) |
| 1187 | { |
| 1188 | unsigned int mask = ac_err_mask(status); |
| 1189 | if (mask == 0) |
| 1190 | return AC_ERR_OTHER; |
| 1191 | return mask; |
| 1192 | } |
| 1193 | |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1194 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
| 1195 | { |
| 1196 | ap->pad_dma = 0; |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1197 | ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
| 1198 | &ap->pad_dma, GFP_KERNEL); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1199 | return (ap->pad == NULL) ? -ENOMEM : 0; |
| 1200 | } |
| 1201 | |
| 1202 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) |
| 1203 | { |
Tejun Heo | f0d36ef | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1204 | dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1205 | } |
| 1206 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1207 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
| 1208 | { |
Tejun Heo | 4911487 | 2007-04-17 23:44:06 +0900 | [diff] [blame] | 1209 | return *(struct ata_port **)&host->hostdata[0]; |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1210 | } |
| 1211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | #endif /* __LINUX_LIBATA_H__ */ |