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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/io.h> |
| 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | /* |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 40 | * compile-time options: to be removed as soon as all the drivers are |
| 41 | * converted to the new debugging mechanism |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | */ |
| 43 | #undef ATA_DEBUG /* debugging output */ |
| 44 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
| 45 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
| 46 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #undef ATA_ENABLE_PATA /* define to enable PATA support in some |
| 48 | * low-level drivers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | |
| 51 | /* note: prints function name for you */ |
| 52 | #ifdef ATA_DEBUG |
| 53 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 54 | #ifdef ATA_VERBOSE_DEBUG |
| 55 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 56 | #else |
| 57 | #define VPRINTK(fmt, args...) |
| 58 | #endif /* ATA_VERBOSE_DEBUG */ |
| 59 | #else |
| 60 | #define DPRINTK(fmt, args...) |
| 61 | #define VPRINTK(fmt, args...) |
| 62 | #endif /* ATA_DEBUG */ |
| 63 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 64 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 65 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 66 | /* NEW: debug levels */ |
| 67 | #define HAVE_LIBATA_MSG 1 |
| 68 | |
| 69 | enum { |
| 70 | ATA_MSG_DRV = 0x0001, |
| 71 | ATA_MSG_INFO = 0x0002, |
| 72 | ATA_MSG_PROBE = 0x0004, |
| 73 | ATA_MSG_WARN = 0x0008, |
| 74 | ATA_MSG_MALLOC = 0x0010, |
| 75 | ATA_MSG_CTL = 0x0020, |
| 76 | ATA_MSG_INTR = 0x0040, |
| 77 | ATA_MSG_ERR = 0x0080, |
| 78 | }; |
| 79 | |
| 80 | #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) |
| 81 | #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) |
| 82 | #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) |
| 83 | #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) |
| 84 | #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) |
| 85 | #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) |
| 86 | #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) |
| 87 | #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) |
| 88 | |
| 89 | static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) |
| 90 | { |
| 91 | if (dval < 0 || dval >= (sizeof(u32) * 8)) |
| 92 | return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ |
| 93 | if (!dval) |
| 94 | return 0; |
| 95 | return (1 << dval) - 1; |
| 96 | } |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | /* defines only for the constants which don't work well as enums */ |
| 99 | #define ATA_TAG_POISON 0xfafbfcfdU |
| 100 | |
| 101 | /* move to PCI layer? */ |
| 102 | static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) |
| 103 | { |
| 104 | return &pdev->dev; |
| 105 | } |
| 106 | |
| 107 | enum { |
| 108 | /* various global constants */ |
| 109 | LIBATA_MAX_PRD = ATA_MAX_PRD / 2, |
| 110 | ATA_MAX_PORTS = 8, |
| 111 | ATA_DEF_QUEUE = 1, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 112 | /* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */ |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 113 | ATA_MAX_QUEUE = 32, |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 114 | ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | ATA_MAX_SECTORS = 200, /* FIXME */ |
Tejun Heo | 200d5a76 | 2006-02-15 16:24:49 +0900 | [diff] [blame] | 116 | ATA_MAX_SECTORS_LBA48 = 65535, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | ATA_MAX_BUS = 2, |
| 118 | ATA_DEF_BUSY_WAIT = 10000, |
| 119 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, |
| 120 | |
| 121 | ATA_SHT_EMULATED = 1, |
| 122 | ATA_SHT_CMD_PER_LUN = 1, |
| 123 | ATA_SHT_THIS_ID = -1, |
Jeff Garzik | cf48293 | 2005-10-22 00:19:33 -0400 | [diff] [blame] | 124 | ATA_SHT_USE_CLUSTERING = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | /* struct ata_device stuff */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 127 | ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */ |
| 128 | ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */ |
Jeff Garzik | 029f546 | 2006-04-02 10:30:40 -0400 | [diff] [blame] | 129 | 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] | 130 | ATA_DFLAG_NCQ = (1 << 3), /* device supports NCQ */ |
Tejun Heo | ea1dd4e | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 131 | ATA_DFLAG_CFG_MASK = (1 << 8) - 1, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 132 | |
| 133 | ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */ |
Tejun Heo | 02670bf | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 134 | ATA_DFLAG_SUSPENDED = (1 << 9), /* device suspended */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 135 | ATA_DFLAG_INIT_MASK = (1 << 16) - 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 137 | ATA_DFLAG_DETACH = (1 << 16), |
| 138 | ATA_DFLAG_DETACHED = (1 << 17), |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 141 | ATA_DEV_ATA = 1, /* ATA device */ |
| 142 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 143 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 144 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
| 145 | ATA_DEV_NONE = 5, /* no device */ |
| 146 | |
| 147 | /* struct ata_port flags */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 148 | ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /* (doesn't imply presence) */ |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 150 | ATA_FLAG_SATA = (1 << 1), |
| 151 | ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ |
| 152 | ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ |
| 153 | ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ |
| 154 | ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ |
| 155 | ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ |
| 156 | ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ |
| 157 | ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 158 | ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD |
| 159 | * doesn't handle PIO interrupts */ |
| 160 | ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 161 | ATA_FLAG_HRST_TO_RESUME = (1 << 11), /* hardreset to resume phy */ |
| 162 | ATA_FLAG_SKIP_D2H_BSY = (1 << 12), /* can't wait for the first D2H |
| 163 | * Register FIS clearing BSY */ |
Tejun Heo | 7395acb | 2006-05-31 18:27:25 +0900 | [diff] [blame] | 164 | ATA_FLAG_DEBUGMSG = (1 << 13), |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 165 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 166 | /* The following flag belongs to ap->pflags but is kept in |
| 167 | * ap->flags because it's referenced in many LLDs and will be |
| 168 | * removed in not-too-distant future. |
| 169 | */ |
| 170 | ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */ |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 171 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 172 | /* bits 24:31 of ap->flags are reserved for LLD specific flags */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 173 | |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 174 | /* struct ata_port pflags */ |
| 175 | ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */ |
| 176 | ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */ |
| 177 | ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */ |
| 178 | ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */ |
| 179 | ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */ |
| 180 | ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ |
| 181 | ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ |
| 182 | |
| 183 | ATA_PFLAG_FLUSH_PORT_TASK = (1 << 16), /* flush port task */ |
| 184 | ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 185 | ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 186 | |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 187 | /* struct ata_queued_cmd flags */ |
| 188 | ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ |
| 189 | ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ |
| 190 | ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
Tejun Heo | 2719736 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 192 | ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 193 | ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ |
| 194 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 195 | ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */ |
| 196 | ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */ |
| 197 | ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Alan Cox | 4e5ec5d | 2006-03-27 18:42:40 +0100 | [diff] [blame] | 199 | /* host set flags */ |
| 200 | ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */ |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* various lengths of time */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 203 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
| 204 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 205 | ATA_TMOUT_INTERNAL = 30 * HZ, |
| 206 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
| 208 | /* ATA bus states */ |
| 209 | BUS_UNKNOWN = 0, |
| 210 | BUS_DMA = 1, |
| 211 | BUS_IDLE = 2, |
| 212 | BUS_NOINTR = 3, |
| 213 | BUS_NODATA = 4, |
| 214 | BUS_TIMER = 5, |
| 215 | BUS_PIO = 6, |
| 216 | BUS_EDD = 7, |
| 217 | BUS_IDENTIFY = 8, |
| 218 | BUS_PACKET = 9, |
| 219 | |
| 220 | /* SATA port states */ |
| 221 | PORT_UNKNOWN = 0, |
| 222 | PORT_ENABLED = 1, |
| 223 | PORT_DISABLED = 2, |
| 224 | |
| 225 | /* encoding various smaller bitmaps into a single |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 226 | * unsigned int bitmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | */ |
Tejun Heo | 1da7b0d | 2006-03-06 04:31:56 +0900 | [diff] [blame] | 228 | ATA_BITS_PIO = 5, |
| 229 | ATA_BITS_MWDMA = 3, |
| 230 | ATA_BITS_UDMA = 8, |
| 231 | |
| 232 | ATA_SHIFT_PIO = 0, |
| 233 | ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, |
| 234 | ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, |
| 235 | |
| 236 | ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, |
| 237 | ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, |
| 238 | ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 239 | |
| 240 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 241 | ATA_DMA_PAD_SZ = 4, |
| 242 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, |
Tejun Heo | 949b38a | 2006-04-02 18:51:52 +0900 | [diff] [blame] | 243 | |
| 244 | /* masks for port functions */ |
Alan Cox | 47a8659 | 2005-10-04 08:09:19 -0400 | [diff] [blame] | 245 | ATA_PORT_PRIMARY = (1 << 0), |
| 246 | ATA_PORT_SECONDARY = (1 << 1), |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 247 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 248 | /* ering size */ |
| 249 | ATA_ERING_SIZE = 32, |
| 250 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 251 | /* desc_len for ata_eh_info and context */ |
| 252 | ATA_EH_DESC_LEN = 80, |
| 253 | |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 254 | /* reset / recovery action types */ |
| 255 | ATA_EH_REVALIDATE = (1 << 0), |
| 256 | ATA_EH_SOFTRESET = (1 << 1), |
| 257 | ATA_EH_HARDRESET = (1 << 2), |
Tejun Heo | 02670bf | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 258 | ATA_EH_SUSPEND = (1 << 3), |
| 259 | ATA_EH_RESUME = (1 << 4), |
| 260 | ATA_EH_PM_FREEZE = (1 << 5), |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 261 | |
| 262 | ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET, |
Tejun Heo | 02670bf | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 263 | ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_SUSPEND | |
| 264 | ATA_EH_RESUME | ATA_EH_PM_FREEZE, |
Tejun Heo | 9be1e97 | 2006-05-15 20:58:17 +0900 | [diff] [blame] | 265 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 266 | /* ata_eh_info->flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 267 | ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */ |
Tejun Heo | 2832430 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 268 | ATA_EHI_RESUME_LINK = (1 << 1), /* need to resume link */ |
Tejun Heo | 1cdaf53 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 269 | ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ |
| 270 | ATA_EHI_QUIET = (1 << 3), /* be quiet */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 271 | |
| 272 | ATA_EHI_DID_RESET = (1 << 16), /* already reset this port */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 273 | |
Tejun Heo | ad9e276 | 2006-05-15 20:58:12 +0900 | [diff] [blame] | 274 | /* max repeat if error condition is still set after ->error_handler */ |
| 275 | ATA_EH_MAX_REPEAT = 5, |
| 276 | |
Tejun Heo | 14d2bac | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 277 | /* how hard are we gonna try to probe/recover devices */ |
| 278 | ATA_PROBE_MAX_TRIES = 3, |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 279 | ATA_EH_RESET_TRIES = 3, |
| 280 | ATA_EH_DEV_TRIES = 3, |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 281 | |
| 282 | /* Drive spinup time (time from power-on to the first D2H FIS) |
| 283 | * in msecs - 8s currently. Failing to get ready in this time |
| 284 | * isn't critical. It will result in reset failure for |
| 285 | * controllers which can't wait for the first D2H FIS. libata |
| 286 | * will retry, so it just has to be long enough to spin up |
| 287 | * most devices. |
| 288 | */ |
| 289 | ATA_SPINUP_WAIT = 8000, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | }; |
| 291 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 292 | enum hsm_task_states { |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 293 | HSM_ST_UNKNOWN, /* state unknown */ |
| 294 | HSM_ST_IDLE, /* no command on going */ |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 295 | HSM_ST, /* (waiting the device to) transfer data */ |
| 296 | HSM_ST_LAST, /* (waiting the device to) complete command */ |
Albert Lee | c56b14d2 | 2005-09-30 19:07:39 +0800 | [diff] [blame] | 297 | HSM_ST_ERR, /* error */ |
| 298 | HSM_ST_FIRST, /* (waiting the device to) |
| 299 | write CDB or first data block */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | }; |
| 301 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 302 | enum ata_completion_errors { |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 303 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 304 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 305 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 306 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 307 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 308 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 309 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 310 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 311 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 312 | }; |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* forward declarations */ |
| 315 | struct scsi_device; |
| 316 | struct ata_port_operations; |
| 317 | struct ata_port; |
| 318 | struct ata_queued_cmd; |
| 319 | |
| 320 | /* typedefs */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 321 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 322 | typedef int (*ata_prereset_fn_t)(struct ata_port *ap); |
| 323 | typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes); |
| 324 | 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] | 325 | |
| 326 | struct ata_ioports { |
| 327 | unsigned long cmd_addr; |
| 328 | unsigned long data_addr; |
| 329 | unsigned long error_addr; |
| 330 | unsigned long feature_addr; |
| 331 | unsigned long nsect_addr; |
| 332 | unsigned long lbal_addr; |
| 333 | unsigned long lbam_addr; |
| 334 | unsigned long lbah_addr; |
| 335 | unsigned long device_addr; |
| 336 | unsigned long status_addr; |
| 337 | unsigned long command_addr; |
| 338 | unsigned long altstatus_addr; |
| 339 | unsigned long ctl_addr; |
| 340 | unsigned long bmdma_addr; |
| 341 | unsigned long scr_addr; |
| 342 | }; |
| 343 | |
| 344 | struct ata_probe_ent { |
| 345 | struct list_head node; |
| 346 | struct device *dev; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 347 | const struct ata_port_operations *port_ops; |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 348 | struct scsi_host_template *sht; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | struct ata_ioports port[ATA_MAX_PORTS]; |
| 350 | unsigned int n_ports; |
| 351 | unsigned int hard_port_no; |
| 352 | unsigned int pio_mask; |
| 353 | unsigned int mwdma_mask; |
| 354 | unsigned int udma_mask; |
| 355 | unsigned int legacy_mode; |
| 356 | unsigned long irq; |
| 357 | unsigned int irq_flags; |
| 358 | unsigned long host_flags; |
Alan Cox | 4e5ec5d | 2006-03-27 18:42:40 +0100 | [diff] [blame] | 359 | unsigned long host_set_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | void __iomem *mmio_base; |
| 361 | void *private_data; |
| 362 | }; |
| 363 | |
| 364 | struct ata_host_set { |
| 365 | spinlock_t lock; |
| 366 | struct device *dev; |
| 367 | unsigned long irq; |
| 368 | void __iomem *mmio_base; |
| 369 | unsigned int n_ports; |
| 370 | void *private_data; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 371 | const struct ata_port_operations *ops; |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 372 | unsigned long flags; |
| 373 | int simplex_claimed; /* Keep seperate in case we |
| 374 | ever need to do this locked */ |
Tejun Heo | f0eb62b | 2006-06-12 23:05:38 +0900 | [diff] [blame] | 375 | struct ata_host_set *next; /* for legacy mode */ |
| 376 | struct ata_port *ports[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | }; |
| 378 | |
| 379 | struct ata_queued_cmd { |
| 380 | struct ata_port *ap; |
| 381 | struct ata_device *dev; |
| 382 | |
| 383 | struct scsi_cmnd *scsicmd; |
| 384 | void (*scsidone)(struct scsi_cmnd *); |
| 385 | |
| 386 | struct ata_taskfile tf; |
| 387 | u8 cdb[ATAPI_CDB_LEN]; |
| 388 | |
| 389 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 390 | unsigned int tag; |
| 391 | unsigned int n_elem; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 392 | unsigned int orig_n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | |
| 394 | int dma_dir; |
| 395 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 396 | unsigned int pad_len; |
| 397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | unsigned int nsect; |
| 399 | unsigned int cursect; |
| 400 | |
| 401 | unsigned int nbytes; |
| 402 | unsigned int curbytes; |
| 403 | |
| 404 | unsigned int cursg; |
| 405 | unsigned int cursg_ofs; |
| 406 | |
| 407 | struct scatterlist sgent; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 408 | struct scatterlist pad_sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | void *buf_virt; |
| 410 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 411 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
| 412 | struct scatterlist *__sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 414 | unsigned int err_mask; |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 415 | struct ata_taskfile result_tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | ata_qc_cb_t complete_fn; |
| 417 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | void *private_data; |
| 419 | }; |
| 420 | |
| 421 | struct ata_host_stats { |
| 422 | unsigned long unhandled_irq; |
| 423 | unsigned long idle_irq; |
| 424 | unsigned long rw_reqbuf; |
| 425 | }; |
| 426 | |
Tejun Heo | 0c247c5 | 2006-05-15 20:58:19 +0900 | [diff] [blame] | 427 | struct ata_ering_entry { |
| 428 | int is_io; |
| 429 | unsigned int err_mask; |
| 430 | u64 timestamp; |
| 431 | }; |
| 432 | |
| 433 | struct ata_ering { |
| 434 | int cursor; |
| 435 | struct ata_ering_entry ring[ATA_ERING_SIZE]; |
| 436 | }; |
| 437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | struct ata_device { |
Tejun Heo | 38d8723 | 2006-05-15 20:57:51 +0900 | [diff] [blame] | 439 | struct ata_port *ap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | unsigned int devno; /* 0 or 1 */ |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 441 | unsigned long flags; /* ATA_DFLAG_xxx */ |
Tejun Heo | 3edebac | 2006-05-31 18:27:40 +0900 | [diff] [blame] | 442 | struct scsi_device *sdev; /* attached SCSI device */ |
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 | 8bf62ece | 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 | 8bf62ece | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | }; |
| 470 | |
Tejun Heo | 72fa4b7 | 2006-05-31 18:27:32 +0900 | [diff] [blame] | 471 | /* Offset into struct ata_device. Fields above it are maintained |
| 472 | * acress device init. Fields below are zeroed. |
| 473 | */ |
| 474 | #define ATA_DEVICE_CLEAR_OFFSET offsetof(struct ata_device, n_sectors) |
| 475 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 476 | struct ata_eh_info { |
| 477 | struct ata_device *dev; /* offending device */ |
| 478 | u32 serror; /* SError from LLDD */ |
| 479 | unsigned int err_mask; /* port-wide err_mask */ |
| 480 | unsigned int action; /* ATA_EH_* action mask */ |
Tejun Heo | 47005f2 | 2006-06-19 18:27:23 +0900 | [diff] [blame] | 481 | unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */ |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 482 | unsigned int flags; /* ATA_EHI_* flags */ |
Tejun Heo | abdda73 | 2006-05-31 18:27:29 +0900 | [diff] [blame] | 483 | |
| 484 | unsigned long hotplug_timestamp; |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | struct ata_port { |
| 499 | struct Scsi_Host *host; /* our co-allocated scsi host */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 500 | const struct ata_port_operations *ops; |
Jeff Garzik | ba6a130 | 2006-06-22 23:46:10 -0400 | [diff] [blame] | 501 | spinlock_t *lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | unsigned long flags; /* ATA_FLAG_xxx */ |
Tejun Heo | b51e9e5 | 2006-06-29 01:29:30 +0900 | [diff] [blame] | 503 | unsigned int pflags; /* ATA_PFLAG_xxx */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | unsigned int id; /* unique id req'd by scsi midlyr */ |
| 505 | unsigned int port_no; /* unique port #; from zero */ |
| 506 | unsigned int hard_port_no; /* hardware port #; from zero */ |
| 507 | |
| 508 | struct ata_prd *prd; /* our SG list */ |
| 509 | dma_addr_t prd_dma; /* and its DMA mapping */ |
| 510 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 511 | void *pad; /* array of DMA pad buffers */ |
| 512 | dma_addr_t pad_dma; |
| 513 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
| 515 | |
| 516 | u8 ctl; /* cache of ATA control register */ |
| 517 | u8 last_ctl; /* Cache last written value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | unsigned int pio_mask; |
| 519 | unsigned int mwdma_mask; |
| 520 | unsigned int udma_mask; |
| 521 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
Tejun Heo | 5a04bf4 | 2006-05-31 18:27:38 +0900 | [diff] [blame] | 522 | unsigned int hw_sata_spd_limit; |
Tejun Heo | 1c3fae4 | 2006-04-02 20:53:28 +0900 | [diff] [blame] | 523 | unsigned int sata_spd_limit; /* SATA PHY speed limit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 525 | /* record runtime error info, protected by host_set lock */ |
| 526 | struct ata_eh_info eh_info; |
| 527 | /* EH context owned by EH */ |
| 528 | struct ata_eh_context eh_context; |
| 529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | struct ata_device device[ATA_MAX_DEVICES]; |
| 531 | |
| 532 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
Tejun Heo | 6cec4a3 | 2006-05-15 21:03:41 +0900 | [diff] [blame] | 533 | unsigned long qc_allocated; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 534 | unsigned int qc_active; |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | unsigned int active_tag; |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 537 | u32 sactive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
| 539 | struct ata_host_stats stats; |
| 540 | struct ata_host_set *host_set; |
Brian King | 2f1f610 | 2006-03-23 17:30:15 -0600 | [diff] [blame] | 541 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
Tejun Heo | 9a9c77dc | 2006-06-11 11:19:00 +0900 | [diff] [blame] | 543 | struct work_struct port_task; |
| 544 | struct work_struct hotplug_task; |
Jeff Garzik | 3b01b8a | 2006-06-12 00:22:04 -0400 | [diff] [blame] | 545 | struct work_struct scsi_rescan_task; |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 546 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 547 | unsigned int hsm_task_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 549 | u32 msg_enable; |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 550 | struct list_head eh_done_q; |
Tejun Heo | c6cf9e9 | 2006-05-31 18:27:27 +0900 | [diff] [blame] | 551 | wait_queue_head_t eh_wait_q; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 552 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 553 | pm_message_t pm_mesg; |
| 554 | int *pm_result; |
| 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | void *private_data; |
Tejun Heo | fe635c7 | 2006-05-15 20:57:35 +0900 | [diff] [blame] | 557 | |
| 558 | u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | }; |
| 560 | |
| 561 | struct ata_port_operations { |
| 562 | void (*port_disable) (struct ata_port *); |
| 563 | |
| 564 | void (*dev_config) (struct ata_port *, struct ata_device *); |
| 565 | |
| 566 | void (*set_piomode) (struct ata_port *, struct ata_device *); |
| 567 | void (*set_dmamode) (struct ata_port *, struct ata_device *); |
Alan Cox | 5444a6f | 2006-03-27 18:58:20 +0100 | [diff] [blame] | 568 | unsigned long (*mode_filter) (const struct ata_port *, struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 570 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
| 572 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 573 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | u8 (*check_status)(struct ata_port *ap); |
| 575 | u8 (*check_altstatus)(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
| 577 | |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 578 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
Alan Cox | e35a9e0 | 2006-03-27 18:46:37 +0100 | [diff] [blame] | 579 | void (*set_mode) (struct ata_port *ap); |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | void (*post_set_mode) (struct ata_port *ap); |
| 582 | |
| 583 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
| 584 | |
| 585 | void (*bmdma_setup) (struct ata_queued_cmd *qc); |
| 586 | void (*bmdma_start) (struct ata_queued_cmd *qc); |
| 587 | |
Alan Cox | a6b2c5d | 2006-05-22 16:59:59 +0100 | [diff] [blame] | 588 | void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); |
| 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | void (*qc_prep) (struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 591 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Tejun Heo | 9ec957f | 2006-05-15 20:57:58 +0900 | [diff] [blame] | 593 | /* Error handlers. ->error_handler overrides ->eng_timeout and |
| 594 | * indicates that new-style EH is in place. |
| 595 | */ |
| 596 | void (*eng_timeout) (struct ata_port *ap); /* obsolete */ |
| 597 | |
| 598 | void (*freeze) (struct ata_port *ap); |
| 599 | void (*thaw) (struct ata_port *ap); |
| 600 | void (*error_handler) (struct ata_port *ap); |
| 601 | void (*post_internal_cmd) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | irqreturn_t (*irq_handler)(int, void *, struct pt_regs *); |
| 604 | void (*irq_clear) (struct ata_port *); |
| 605 | |
| 606 | u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg); |
| 607 | void (*scr_write) (struct ata_port *ap, unsigned int sc_reg, |
| 608 | u32 val); |
| 609 | |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 610 | int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); |
| 611 | int (*port_resume) (struct ata_port *ap); |
| 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | int (*port_start) (struct ata_port *ap); |
| 614 | void (*port_stop) (struct ata_port *ap); |
| 615 | |
| 616 | void (*host_stop) (struct ata_host_set *host_set); |
| 617 | |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 618 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | u8 (*bmdma_status) (struct ata_port *ap); |
| 620 | }; |
| 621 | |
| 622 | struct ata_port_info { |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 623 | struct scsi_host_template *sht; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | unsigned long host_flags; |
| 625 | unsigned long pio_mask; |
| 626 | unsigned long mwdma_mask; |
| 627 | unsigned long udma_mask; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 628 | const struct ata_port_operations *port_ops; |
Alan Cox | e99f8b5 | 2005-11-08 14:09:44 +0000 | [diff] [blame] | 629 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | }; |
| 631 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 632 | struct ata_timing { |
| 633 | unsigned short mode; /* ATA mode */ |
| 634 | unsigned short setup; /* t1 */ |
| 635 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 636 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 637 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 638 | unsigned short active; /* t2 or tD */ |
| 639 | unsigned short recover; /* t2i or tK */ |
| 640 | unsigned short cycle; /* t0 */ |
| 641 | unsigned short udma; /* t2CYCTYP/2 */ |
| 642 | }; |
| 643 | |
| 644 | #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] | 645 | |
Tejun Heo | e9c8391 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 646 | extern const unsigned long sata_deb_timing_normal[]; |
| 647 | extern const unsigned long sata_deb_timing_hotplug[]; |
| 648 | extern const unsigned long sata_deb_timing_long[]; |
| 649 | |
| 650 | static inline const unsigned long * |
| 651 | sata_ehc_deb_timing(struct ata_eh_context *ehc) |
| 652 | { |
| 653 | if (ehc->i.flags & ATA_EHI_HOTPLUGGED) |
| 654 | return sata_deb_timing_hotplug; |
| 655 | else |
| 656 | return sata_deb_timing_normal; |
| 657 | } |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | extern void ata_port_probe(struct ata_port *); |
| 660 | extern void __sata_phy_reset(struct ata_port *ap); |
| 661 | extern void sata_phy_reset(struct ata_port *ap); |
| 662 | extern void ata_bus_reset(struct ata_port *ap); |
Tejun Heo | 3c567b7 | 2006-05-15 20:57:23 +0900 | [diff] [blame] | 663 | extern int sata_set_spd(struct ata_port *ap); |
Tejun Heo | d7bb4cc | 2006-05-31 18:27:46 +0900 | [diff] [blame] | 664 | extern int sata_phy_debounce(struct ata_port *ap, const unsigned long *param); |
| 665 | extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 666 | extern int ata_std_prereset(struct ata_port *ap); |
Tejun Heo | 2bf2cb2 | 2006-04-11 22:16:45 +0900 | [diff] [blame] | 667 | extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes); |
| 668 | extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 669 | extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 670 | extern int ata_dev_revalidate(struct ata_device *dev, int post_reset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | extern void ata_port_disable(struct ata_port *); |
| 672 | extern void ata_std_ports(struct ata_ioports *ioaddr); |
| 673 | #ifdef CONFIG_PCI |
| 674 | extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info, |
| 675 | unsigned int n_ports); |
| 676 | extern void ata_pci_remove_one (struct pci_dev *pdev); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 677 | extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t state); |
| 678 | extern void ata_pci_device_do_resume(struct pci_dev *pdev); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 679 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state); |
| 680 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
Jeff Garzik | 17bb34a | 2006-03-21 21:29:21 -0500 | [diff] [blame] | 681 | extern int ata_pci_clear_simplex(struct pci_dev *pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | #endif /* CONFIG_PCI */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 683 | extern int ata_device_add(const struct ata_probe_ent *ent); |
Tejun Heo | 720ba12 | 2006-05-31 18:28:13 +0900 | [diff] [blame] | 684 | extern void ata_port_detach(struct ata_port *ap); |
Alan Cox | 17b1445 | 2005-09-15 15:44:00 +0100 | [diff] [blame] | 685 | extern void ata_host_set_remove(struct ata_host_set *host_set); |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 686 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 688 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | extern int ata_scsi_release(struct Scsi_Host *host); |
| 690 | 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] | 691 | extern int sata_scr_valid(struct ata_port *ap); |
| 692 | extern int sata_scr_read(struct ata_port *ap, int reg, u32 *val); |
| 693 | extern int sata_scr_write(struct ata_port *ap, int reg, u32 val); |
| 694 | extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val); |
| 695 | extern int ata_port_online(struct ata_port *ap); |
| 696 | extern int ata_port_offline(struct ata_port *ap); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 697 | extern int ata_scsi_device_resume(struct scsi_device *); |
Nigel Cunningham | 082776e | 2006-03-23 23:22:16 +1000 | [diff] [blame] | 698 | extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t state); |
Tejun Heo | 500530f | 2006-07-03 16:07:27 +0900 | [diff] [blame] | 699 | extern int ata_host_set_suspend(struct ata_host_set *host_set, |
| 700 | pm_message_t mesg); |
| 701 | extern void ata_host_set_resume(struct ata_host_set *host_set); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 702 | extern int ata_ratelimit(void); |
Tejun Heo | 6f8b995 | 2006-01-24 17:05:21 +0900 | [diff] [blame] | 703 | extern unsigned int ata_busy_sleep(struct ata_port *ap, |
| 704 | unsigned long timeout_pat, |
| 705 | unsigned long timeout); |
Tejun Heo | 86e45b6 | 2006-03-05 15:29:09 +0900 | [diff] [blame] | 706 | extern void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *), |
| 707 | void *data, unsigned long delay); |
Tejun Heo | c22daff | 2006-04-11 22:22:29 +0900 | [diff] [blame] | 708 | extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, |
| 709 | unsigned long interval_msec, |
| 710 | unsigned long timeout_msec); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | /* |
| 713 | * Default driver ops implementations |
| 714 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 715 | 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] | 716 | extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 717 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp); |
| 718 | 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] | 719 | extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); |
| 720 | extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); |
| 721 | extern u8 ata_check_status(struct ata_port *ap); |
| 722 | extern u8 ata_altstatus(struct ata_port *ap); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 723 | 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] | 724 | extern int ata_port_start (struct ata_port *ap); |
| 725 | extern void ata_port_stop (struct ata_port *ap); |
Jeff Garzik | aa8f0dc | 2005-05-26 21:54:27 -0400 | [diff] [blame] | 726 | extern void ata_host_stop (struct ata_host_set *host_set); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs); |
Alan Cox | a6b2c5d | 2006-05-22 16:59:59 +0100 | [diff] [blame] | 728 | extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, |
| 729 | unsigned int buflen, int write_data); |
| 730 | extern void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf, |
| 731 | unsigned int buflen, int write_data); |
Alan Cox | 75e9958 | 2006-05-24 14:14:41 +0100 | [diff] [blame] | 732 | extern void ata_pio_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, |
| 733 | unsigned int buflen, int write_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
Brian King | e46834c | 2006-03-17 17:04:03 -0600 | [diff] [blame] | 735 | extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 736 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
| 738 | unsigned int buflen); |
| 739 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 740 | unsigned int n_elem); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 741 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
Tejun Heo | 6a62a04 | 2006-02-13 10:02:46 +0900 | [diff] [blame] | 742 | extern void ata_id_string(const u16 *id, unsigned char *s, |
| 743 | unsigned int ofs, unsigned int len); |
| 744 | extern void ata_id_c_string(const u16 *id, unsigned char *s, |
| 745 | unsigned int ofs, unsigned int len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | extern void ata_bmdma_setup (struct ata_queued_cmd *qc); |
| 747 | extern void ata_bmdma_start (struct ata_queued_cmd *qc); |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 748 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 750 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
Tejun Heo | 6d97dbd | 2006-05-15 20:58:24 +0900 | [diff] [blame] | 751 | extern void ata_bmdma_freeze(struct ata_port *ap); |
| 752 | extern void ata_bmdma_thaw(struct ata_port *ap); |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 753 | 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] | 754 | ata_reset_fn_t softreset, |
| 755 | ata_reset_fn_t hardreset, |
| 756 | ata_postreset_fn_t postreset); |
| 757 | extern void ata_bmdma_error_handler(struct ata_port *ap); |
| 758 | extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc); |
Tejun Heo | 9a1004d | 2006-05-31 18:27:52 +0900 | [diff] [blame] | 759 | extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, |
| 760 | u8 status, int in_wq); |
Tejun Heo | f686bcb | 2006-05-15 20:58:05 +0900 | [diff] [blame] | 761 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
Tejun Heo | dedaf2b | 2006-05-15 21:03:43 +0900 | [diff] [blame] | 762 | extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, |
| 763 | void (*finish_qc)(struct ata_queued_cmd *)); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 764 | 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] | 765 | void (*done)(struct scsi_cmnd *)); |
| 766 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 767 | struct block_device *bdev, |
| 768 | sector_t capacity, int geom[]); |
| 769 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
Tejun Heo | 83c47bc | 2006-05-31 18:28:07 +0900 | [diff] [blame] | 770 | extern void ata_scsi_slave_destroy(struct scsi_device *sdev); |
Tejun Heo | a6e6ce8 | 2006-05-15 21:03:48 +0900 | [diff] [blame] | 771 | extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, |
| 772 | int queue_depth); |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 773 | extern struct ata_device *ata_dev_pair(struct ata_device *adev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 775 | /* |
| 776 | * Timing helpers |
| 777 | */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 778 | |
| 779 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 780 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 781 | struct ata_timing *, int, int); |
| 782 | extern void ata_timing_merge(const struct ata_timing *, |
| 783 | const struct ata_timing *, struct ata_timing *, |
| 784 | unsigned int); |
| 785 | |
| 786 | enum { |
| 787 | ATA_TIMING_SETUP = (1 << 0), |
| 788 | ATA_TIMING_ACT8B = (1 << 1), |
| 789 | ATA_TIMING_REC8B = (1 << 2), |
| 790 | ATA_TIMING_CYC8B = (1 << 3), |
| 791 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 792 | ATA_TIMING_CYC8B, |
| 793 | ATA_TIMING_ACTIVE = (1 << 4), |
| 794 | ATA_TIMING_RECOVER = (1 << 5), |
| 795 | ATA_TIMING_CYCLE = (1 << 6), |
| 796 | ATA_TIMING_UDMA = (1 << 7), |
| 797 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 798 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 799 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 800 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, |
| 801 | }; |
| 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | |
| 804 | #ifdef CONFIG_PCI |
| 805 | struct pci_bits { |
| 806 | unsigned int reg; /* PCI config register to read */ |
| 807 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 808 | unsigned long mask; |
| 809 | unsigned long val; |
| 810 | }; |
| 811 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 812 | extern void ata_pci_host_stop (struct ata_host_set *host_set); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | extern struct ata_probe_ent * |
Alan Cox | 47a8659 | 2005-10-04 08:09:19 -0400 | [diff] [blame] | 814 | ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 815 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
Jeff Garzik | 17bb34a | 2006-03-21 21:29:21 -0500 | [diff] [blame] | 816 | extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | #endif /* CONFIG_PCI */ |
| 818 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 819 | /* |
| 820 | * EH |
| 821 | */ |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 822 | extern void ata_eng_timeout(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 823 | |
| 824 | extern void ata_port_schedule_eh(struct ata_port *ap); |
| 825 | extern int ata_port_abort(struct ata_port *ap); |
Tejun Heo | e318049 | 2006-05-15 20:58:09 +0900 | [diff] [blame] | 826 | extern int ata_port_freeze(struct ata_port *ap); |
| 827 | |
| 828 | extern void ata_eh_freeze_port(struct ata_port *ap); |
| 829 | extern void ata_eh_thaw_port(struct ata_port *ap); |
Tejun Heo | 7b70fc0 | 2006-05-15 20:58:07 +0900 | [diff] [blame] | 830 | |
Tejun Heo | ece1d63 | 2006-04-02 18:51:53 +0900 | [diff] [blame] | 831 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 832 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
| 833 | |
Tejun Heo | f5914a4 | 2006-05-31 18:27:48 +0900 | [diff] [blame] | 834 | extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset, |
| 835 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 836 | ata_postreset_fn_t postreset); |
Tejun Heo | 022bdb0 | 2006-05-15 20:58:22 +0900 | [diff] [blame] | 837 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 838 | /* |
| 839 | * printk helpers |
| 840 | */ |
| 841 | #define ata_port_printk(ap, lv, fmt, args...) \ |
| 842 | printk(lv"ata%u: "fmt, (ap)->id , ##args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 844 | #define ata_dev_printk(dev, lv, fmt, args...) \ |
| 845 | printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args) |
| 846 | |
| 847 | /* |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 848 | * ata_eh_info helpers |
| 849 | */ |
| 850 | #define ata_ehi_push_desc(ehi, fmt, args...) do { \ |
| 851 | (ehi)->desc_len += scnprintf((ehi)->desc + (ehi)->desc_len, \ |
| 852 | ATA_EH_DESC_LEN - (ehi)->desc_len, \ |
| 853 | fmt , ##args); \ |
| 854 | } while (0) |
| 855 | |
| 856 | #define ata_ehi_clear_desc(ehi) do { \ |
| 857 | (ehi)->desc[0] = '\0'; \ |
| 858 | (ehi)->desc_len = 0; \ |
| 859 | } while (0) |
| 860 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 861 | static inline void __ata_ehi_hotplugged(struct ata_eh_info *ehi) |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 862 | { |
| 863 | if (ehi->flags & ATA_EHI_HOTPLUGGED) |
| 864 | return; |
| 865 | |
Tejun Heo | 2832430 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 866 | ehi->flags |= ATA_EHI_HOTPLUGGED | ATA_EHI_RESUME_LINK; |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 867 | ehi->hotplug_timestamp = jiffies; |
| 868 | |
Tejun Heo | 084fe63 | 2006-05-31 18:28:03 +0900 | [diff] [blame] | 869 | ehi->action |= ATA_EH_SOFTRESET; |
| 870 | ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1; |
| 871 | } |
| 872 | |
Tejun Heo | c0b6c03 | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 873 | static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) |
| 874 | { |
| 875 | __ata_ehi_hotplugged(ehi); |
| 876 | ehi->err_mask |= AC_ERR_ATA_BUS; |
| 877 | } |
| 878 | |
Tejun Heo | f3e81b1 | 2006-05-15 20:58:21 +0900 | [diff] [blame] | 879 | /* |
Tejun Heo | 61440db | 2006-05-15 20:57:55 +0900 | [diff] [blame] | 880 | * qc helpers |
| 881 | */ |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 882 | static inline int |
| 883 | ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 884 | { |
| 885 | if (sg == &qc->pad_sgent) |
| 886 | return 1; |
| 887 | if (qc->pad_len) |
| 888 | return 0; |
| 889 | if (((sg - qc->__sg) + 1) == qc->n_elem) |
| 890 | return 1; |
| 891 | return 0; |
| 892 | } |
| 893 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 894 | static inline struct scatterlist * |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 895 | ata_qc_first_sg(struct ata_queued_cmd *qc) |
| 896 | { |
| 897 | if (qc->n_elem) |
| 898 | return qc->__sg; |
| 899 | if (qc->pad_len) |
| 900 | return &qc->pad_sgent; |
| 901 | return NULL; |
| 902 | } |
| 903 | |
| 904 | static inline struct scatterlist * |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 905 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 906 | { |
| 907 | if (sg == &qc->pad_sgent) |
| 908 | return NULL; |
| 909 | if (++sg - qc->__sg < qc->n_elem) |
| 910 | return sg; |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 911 | if (qc->pad_len) |
| 912 | return &qc->pad_sgent; |
| 913 | return NULL; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | #define ata_for_each_sg(sg, qc) \ |
Tejun Heo | cc1887f3 | 2006-02-20 23:48:38 +0900 | [diff] [blame] | 917 | 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] | 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 920 | { |
| 921 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 922 | } |
| 923 | |
Tejun Heo | 2ab7db1 | 2006-05-15 20:58:02 +0900 | [diff] [blame] | 924 | static inline unsigned int ata_tag_internal(unsigned int tag) |
| 925 | { |
| 926 | return tag == ATA_MAX_QUEUE - 1; |
| 927 | } |
| 928 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 929 | /* |
| 930 | * device helpers |
| 931 | */ |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 932 | static inline unsigned int ata_class_enabled(unsigned int class) |
Tejun Heo | 597afd2 | 2006-03-01 01:25:38 +0900 | [diff] [blame] | 933 | { |
| 934 | return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; |
| 935 | } |
| 936 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 937 | static inline unsigned int ata_class_disabled(unsigned int class) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | { |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 939 | return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP; |
| 940 | } |
| 941 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 942 | static inline unsigned int ata_class_absent(unsigned int class) |
| 943 | { |
| 944 | return !ata_class_enabled(class) && !ata_class_disabled(class); |
| 945 | } |
| 946 | |
Tejun Heo | e1211e3 | 2006-04-01 01:38:18 +0900 | [diff] [blame] | 947 | static inline unsigned int ata_dev_enabled(const struct ata_device *dev) |
| 948 | { |
| 949 | return ata_class_enabled(dev->class); |
| 950 | } |
| 951 | |
| 952 | static inline unsigned int ata_dev_disabled(const struct ata_device *dev) |
| 953 | { |
| 954 | return ata_class_disabled(dev->class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
| 956 | |
Tejun Heo | 002c805 | 2006-04-02 17:54:46 +0900 | [diff] [blame] | 957 | static inline unsigned int ata_dev_absent(const struct ata_device *dev) |
| 958 | { |
| 959 | return ata_class_absent(dev->class); |
| 960 | } |
| 961 | |
Tejun Heo | 02670bf | 2006-07-03 16:07:26 +0900 | [diff] [blame] | 962 | static inline unsigned int ata_dev_ready(const struct ata_device *dev) |
| 963 | { |
| 964 | return ata_dev_enabled(dev) && !(dev->flags & ATA_DFLAG_SUSPENDED); |
| 965 | } |
| 966 | |
Tejun Heo | 5806db2 | 2006-06-24 20:30:19 +0900 | [diff] [blame] | 967 | /* |
| 968 | * port helpers |
| 969 | */ |
| 970 | static inline int ata_port_max_devices(const struct ata_port *ap) |
| 971 | { |
| 972 | if (ap->flags & ATA_FLAG_SLAVE_POSS) |
| 973 | return 2; |
| 974 | return 1; |
| 975 | } |
| 976 | |
| 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | static inline u8 ata_chk_status(struct ata_port *ap) |
| 979 | { |
| 980 | return ap->ops->check_status(ap); |
| 981 | } |
| 982 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 983 | |
| 984 | /** |
| 985 | * ata_pause - Flush writes and pause 400 nanoseconds. |
| 986 | * @ap: Port to wait for. |
| 987 | * |
| 988 | * LOCKING: |
| 989 | * Inherited from caller. |
| 990 | */ |
| 991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | static inline void ata_pause(struct ata_port *ap) |
| 993 | { |
| 994 | ata_altstatus(ap); |
| 995 | ndelay(400); |
| 996 | } |
| 997 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 998 | |
| 999 | /** |
| 1000 | * ata_busy_wait - Wait for a port status register |
| 1001 | * @ap: Port to wait for. |
| 1002 | * |
| 1003 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 1004 | * status register to be cleared. |
| 1005 | * Returns final value of status register. |
| 1006 | * |
| 1007 | * LOCKING: |
| 1008 | * Inherited from caller. |
| 1009 | */ |
| 1010 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
| 1012 | unsigned int max) |
| 1013 | { |
| 1014 | u8 status; |
| 1015 | |
| 1016 | do { |
| 1017 | udelay(10); |
| 1018 | status = ata_chk_status(ap); |
| 1019 | max--; |
| 1020 | } while ((status & bits) && (max > 0)); |
| 1021 | |
| 1022 | return status; |
| 1023 | } |
| 1024 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1025 | |
| 1026 | /** |
| 1027 | * ata_wait_idle - Wait for a port to be idle. |
| 1028 | * @ap: Port to wait for. |
| 1029 | * |
| 1030 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 1031 | * Returns final value of status register. |
| 1032 | * |
| 1033 | * LOCKING: |
| 1034 | * Inherited from caller. |
| 1035 | */ |
| 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 1038 | { |
| 1039 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
| 1040 | |
| 1041 | if (status & (ATA_BUSY | ATA_DRQ)) { |
| 1042 | unsigned long l = ap->ioaddr.status_addr; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 1043 | if (ata_msg_warn(ap)) |
| 1044 | printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n", |
| 1045 | status, l); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | } |
| 1047 | |
| 1048 | return status; |
| 1049 | } |
| 1050 | |
| 1051 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
| 1052 | { |
| 1053 | qc->tf.ctl |= ATA_NIEN; |
| 1054 | } |
| 1055 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1056 | static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap, |
| 1057 | unsigned int tag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | { |
| 1059 | if (likely(ata_tag_valid(tag))) |
| 1060 | return &ap->qcmd[tag]; |
| 1061 | return NULL; |
| 1062 | } |
| 1063 | |
Tejun Heo | f69499f | 2006-05-15 20:58:03 +0900 | [diff] [blame] | 1064 | static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap, |
| 1065 | unsigned int tag) |
| 1066 | { |
| 1067 | struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag); |
| 1068 | |
| 1069 | if (unlikely(!qc) || !ap->ops->error_handler) |
| 1070 | return qc; |
| 1071 | |
| 1072 | if ((qc->flags & (ATA_QCFLAG_ACTIVE | |
| 1073 | ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE) |
| 1074 | return qc; |
| 1075 | |
| 1076 | return NULL; |
| 1077 | } |
| 1078 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1079 | 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] | 1080 | { |
| 1081 | memset(tf, 0, sizeof(*tf)); |
| 1082 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1083 | tf->ctl = dev->ap->ctl; |
| 1084 | if (dev->devno == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | tf->device = ATA_DEVICE_OBS; |
| 1086 | else |
| 1087 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 1088 | } |
| 1089 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1090 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 1091 | { |
| 1092 | qc->__sg = NULL; |
| 1093 | qc->flags = 0; |
| 1094 | qc->cursect = qc->cursg = qc->cursg_ofs = 0; |
| 1095 | qc->nsect = 0; |
| 1096 | qc->nbytes = qc->curbytes = 0; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 1097 | qc->err_mask = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1098 | |
Tejun Heo | 3373efd | 2006-05-15 20:57:53 +0900 | [diff] [blame] | 1099 | ata_tf_init(qc->dev, &qc->tf); |
Tejun Heo | e61e067 | 2006-05-15 20:57:40 +0900 | [diff] [blame] | 1100 | |
| 1101 | /* init result_tf such that it indicates normal completion */ |
| 1102 | qc->result_tf.command = ATA_DRDY; |
| 1103 | qc->result_tf.feature = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 1104 | } |
| 1105 | |
Tejun Heo | 7601442 | 2006-02-11 15:13:49 +0900 | [diff] [blame] | 1106 | /** |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1107 | * ata_irq_on - Enable interrupts on a port. |
| 1108 | * @ap: Port on which interrupts are enabled. |
| 1109 | * |
| 1110 | * Enable interrupts on a legacy IDE device using MMIO or PIO, |
| 1111 | * wait for idle, clear any pending interrupts. |
| 1112 | * |
| 1113 | * LOCKING: |
| 1114 | * Inherited from caller. |
| 1115 | */ |
| 1116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | static inline u8 ata_irq_on(struct ata_port *ap) |
| 1118 | { |
| 1119 | struct ata_ioports *ioaddr = &ap->ioaddr; |
| 1120 | u8 tmp; |
| 1121 | |
| 1122 | ap->ctl &= ~ATA_NIEN; |
| 1123 | ap->last_ctl = ap->ctl; |
| 1124 | |
| 1125 | if (ap->flags & ATA_FLAG_MMIO) |
| 1126 | writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr); |
| 1127 | else |
| 1128 | outb(ap->ctl, ioaddr->ctl_addr); |
| 1129 | tmp = ata_wait_idle(ap); |
| 1130 | |
| 1131 | ap->ops->irq_clear(ap); |
| 1132 | |
| 1133 | return tmp; |
| 1134 | } |
| 1135 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 1136 | |
| 1137 | /** |
| 1138 | * ata_irq_ack - Acknowledge a device interrupt. |
| 1139 | * @ap: Port on which interrupts are enabled. |
| 1140 | * |
| 1141 | * Wait up to 10 ms for legacy IDE device to become idle (BUSY |
| 1142 | * or BUSY+DRQ clear). Obtain dma status and port status from |
| 1143 | * device. Clear the interrupt. Return port status. |
| 1144 | * |
| 1145 | * LOCKING: |
| 1146 | */ |
| 1147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) |
| 1149 | { |
| 1150 | unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; |
| 1151 | u8 host_stat, post_stat, status; |
| 1152 | |
| 1153 | status = ata_busy_wait(ap, bits, 1000); |
| 1154 | if (status & bits) |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 1155 | if (ata_msg_err(ap)) |
| 1156 | printk(KERN_ERR "abnormal status 0x%X\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | |
| 1158 | /* get controller status; clear intr, err bits */ |
| 1159 | if (ap->flags & ATA_FLAG_MMIO) { |
| 1160 | void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr; |
| 1161 | host_stat = readb(mmio + ATA_DMA_STATUS); |
| 1162 | writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, |
| 1163 | mmio + ATA_DMA_STATUS); |
| 1164 | |
| 1165 | post_stat = readb(mmio + ATA_DMA_STATUS); |
| 1166 | } else { |
| 1167 | host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 1168 | outb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, |
| 1169 | ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 1170 | |
| 1171 | post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 1172 | } |
| 1173 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 1174 | if (ata_msg_intr(ap)) |
| 1175 | printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", |
| 1176 | __FUNCTION__, |
| 1177 | host_stat, post_stat, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
| 1179 | return status; |
| 1180 | } |
| 1181 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 1182 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | { |
| 1184 | return ata_id_wcache_enabled(dev->id) || |
| 1185 | ata_id_has_flush(dev->id) || |
| 1186 | ata_id_has_flush_ext(dev->id); |
| 1187 | } |
| 1188 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1189 | static inline unsigned int ac_err_mask(u8 status) |
| 1190 | { |
Albert Lee | 3655d1d | 2006-05-19 11:43:04 +0800 | [diff] [blame] | 1191 | if (status & (ATA_BUSY | ATA_DRQ)) |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1192 | return AC_ERR_HSM; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 1193 | if (status & (ATA_ERR | ATA_DF)) |
| 1194 | return AC_ERR_DEV; |
| 1195 | return 0; |
| 1196 | } |
| 1197 | |
| 1198 | static inline unsigned int __ac_err_mask(u8 status) |
| 1199 | { |
| 1200 | unsigned int mask = ac_err_mask(status); |
| 1201 | if (mask == 0) |
| 1202 | return AC_ERR_OTHER; |
| 1203 | return mask; |
| 1204 | } |
| 1205 | |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1206 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
| 1207 | { |
| 1208 | ap->pad_dma = 0; |
| 1209 | ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
| 1210 | &ap->pad_dma, GFP_KERNEL); |
| 1211 | return (ap->pad == NULL) ? -ENOMEM : 0; |
| 1212 | } |
| 1213 | |
| 1214 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) |
| 1215 | { |
| 1216 | dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
| 1217 | } |
| 1218 | |
Jeff Garzik | 35bb94b | 2006-04-11 13:12:34 -0400 | [diff] [blame] | 1219 | static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) |
| 1220 | { |
| 1221 | return (struct ata_port *) &host->hostdata[0]; |
| 1222 | } |
| 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | #endif /* __LINUX_LIBATA_H__ */ |