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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/io.h> |
| 34 | #include <linux/ata.h> |
| 35 | #include <linux/workqueue.h> |
| 36 | |
| 37 | /* |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 38 | * compile-time options: to be removed as soon as all the drivers are |
| 39 | * converted to the new debugging mechanism |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | */ |
| 41 | #undef ATA_DEBUG /* debugging output */ |
| 42 | #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ |
| 43 | #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ |
| 44 | #undef ATA_NDEBUG /* define to disable quick runtime checks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #undef ATA_ENABLE_PATA /* define to enable PATA support in some |
| 46 | * low-level drivers */ |
| 47 | #undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */ |
| 48 | |
| 49 | |
| 50 | /* note: prints function name for you */ |
| 51 | #ifdef ATA_DEBUG |
| 52 | #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 53 | #ifdef ATA_VERBOSE_DEBUG |
| 54 | #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 55 | #else |
| 56 | #define VPRINTK(fmt, args...) |
| 57 | #endif /* ATA_VERBOSE_DEBUG */ |
| 58 | #else |
| 59 | #define DPRINTK(fmt, args...) |
| 60 | #define VPRINTK(fmt, args...) |
| 61 | #endif /* ATA_DEBUG */ |
| 62 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 63 | #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) |
| 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #ifdef ATA_NDEBUG |
| 66 | #define assert(expr) |
| 67 | #else |
| 68 | #define assert(expr) \ |
| 69 | if(unlikely(!(expr))) { \ |
| 70 | printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \ |
| 71 | #expr,__FILE__,__FUNCTION__,__LINE__); \ |
| 72 | } |
| 73 | #endif |
| 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, |
| 119 | ATA_MAX_PORTS = 8, |
| 120 | ATA_DEF_QUEUE = 1, |
| 121 | ATA_MAX_QUEUE = 1, |
| 122 | ATA_MAX_SECTORS = 200, /* FIXME */ |
| 123 | ATA_MAX_BUS = 2, |
| 124 | ATA_DEF_BUSY_WAIT = 10000, |
| 125 | ATA_SHORT_PAUSE = (HZ >> 6) + 1, |
| 126 | |
| 127 | ATA_SHT_EMULATED = 1, |
| 128 | ATA_SHT_CMD_PER_LUN = 1, |
| 129 | ATA_SHT_THIS_ID = -1, |
Jeff Garzik | cf48293 | 2005-10-22 00:19:33 -0400 | [diff] [blame] | 130 | ATA_SHT_USE_CLUSTERING = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | /* struct ata_device stuff */ |
| 133 | ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */ |
| 134 | ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */ |
| 135 | ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */ |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 136 | ATA_DFLAG_LBA = (1 << 3), /* device supports LBA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | ATA_DEV_UNKNOWN = 0, /* unknown device */ |
| 139 | ATA_DEV_ATA = 1, /* ATA device */ |
| 140 | ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ |
| 141 | ATA_DEV_ATAPI = 3, /* ATAPI device */ |
| 142 | ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ |
| 143 | ATA_DEV_NONE = 5, /* no device */ |
| 144 | |
| 145 | /* struct ata_port flags */ |
| 146 | ATA_FLAG_SLAVE_POSS = (1 << 1), /* host supports slave dev */ |
| 147 | /* (doesn't imply presence) */ |
| 148 | ATA_FLAG_PORT_DISABLED = (1 << 2), /* port is disabled, ignore it */ |
| 149 | ATA_FLAG_SATA = (1 << 3), |
| 150 | ATA_FLAG_NO_LEGACY = (1 << 4), /* no legacy mode check */ |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 151 | ATA_FLAG_SRST = (1 << 5), /* (obsolete) use ATA SRST, not E.D.D. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */ |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 153 | ATA_FLAG_SATA_RESET = (1 << 7), /* (obsolete) use COMRESET */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */ |
Tejun Heo | c138950 | 2005-08-22 14:59:24 +0900 | [diff] [blame] | 155 | ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once |
| 156 | * proper HSM is in place. */ |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 157 | ATA_FLAG_DEBUGMSG = (1 << 10), |
Jeff Garzik | 5063019 | 2005-12-13 02:29:45 -0500 | [diff] [blame] | 158 | ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 160 | ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */ |
| 161 | |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 162 | ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */ |
| 163 | ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */ |
| 164 | |
Tejun Heo | c18d06f | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 165 | ATA_FLAG_FLUSH_PIO_TASK = (1 << 15), /* Flush PIO task */ |
| 166 | ATA_FLAG_IN_EH = (1 << 16), /* EH in progress */ |
Tejun Heo | dde4458 | 2006-02-02 00:56:10 +0900 | [diff] [blame] | 167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */ |
| 169 | ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ |
| 170 | ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */ |
| 171 | ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, |
| 172 | |
| 173 | /* various lengths of time */ |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 174 | ATA_TMOUT_EDD = 5 * HZ, /* heuristic */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | ATA_TMOUT_PIO = 30 * HZ, |
Alan Cox | 8d238e0 | 2006-01-17 20:50:31 +0000 | [diff] [blame] | 176 | ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ |
| 177 | ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | ATA_TMOUT_CDB = 30 * HZ, |
| 179 | ATA_TMOUT_CDB_QUICK = 5 * HZ, |
Tejun Heo | a2a7a66 | 2005-12-13 14:48:31 +0900 | [diff] [blame] | 180 | ATA_TMOUT_INTERNAL = 30 * HZ, |
| 181 | ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | /* ATA bus states */ |
| 184 | BUS_UNKNOWN = 0, |
| 185 | BUS_DMA = 1, |
| 186 | BUS_IDLE = 2, |
| 187 | BUS_NOINTR = 3, |
| 188 | BUS_NODATA = 4, |
| 189 | BUS_TIMER = 5, |
| 190 | BUS_PIO = 6, |
| 191 | BUS_EDD = 7, |
| 192 | BUS_IDENTIFY = 8, |
| 193 | BUS_PACKET = 9, |
| 194 | |
| 195 | /* SATA port states */ |
| 196 | PORT_UNKNOWN = 0, |
| 197 | PORT_ENABLED = 1, |
| 198 | PORT_DISABLED = 2, |
| 199 | |
| 200 | /* encoding various smaller bitmaps into a single |
| 201 | * unsigned long bitmap |
| 202 | */ |
| 203 | ATA_SHIFT_UDMA = 0, |
| 204 | ATA_SHIFT_MWDMA = 8, |
| 205 | ATA_SHIFT_PIO = 11, |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 206 | |
| 207 | /* size of buffer to pad xfers ending on unaligned boundaries */ |
| 208 | ATA_DMA_PAD_SZ = 4, |
| 209 | ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, |
Alan Cox | 47a8659 | 2005-10-04 08:09:19 -0400 | [diff] [blame] | 210 | |
| 211 | /* Masks for port functions */ |
| 212 | ATA_PORT_PRIMARY = (1 << 0), |
| 213 | ATA_PORT_SECONDARY = (1 << 1), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | }; |
| 215 | |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 216 | enum hsm_task_states { |
| 217 | HSM_ST_UNKNOWN, |
| 218 | HSM_ST_IDLE, |
| 219 | HSM_ST_POLL, |
| 220 | HSM_ST_TMOUT, |
| 221 | HSM_ST, |
| 222 | HSM_ST_LAST, |
| 223 | HSM_ST_LAST_POLL, |
| 224 | HSM_ST_ERR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | }; |
| 226 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 227 | enum ata_completion_errors { |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 228 | AC_ERR_DEV = (1 << 0), /* device reported error */ |
| 229 | AC_ERR_HSM = (1 << 1), /* host state machine violation */ |
| 230 | AC_ERR_TIMEOUT = (1 << 2), /* timeout */ |
| 231 | AC_ERR_MEDIA = (1 << 3), /* media error */ |
| 232 | AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ |
| 233 | AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ |
| 234 | AC_ERR_SYSTEM = (1 << 6), /* system error */ |
| 235 | AC_ERR_INVALID = (1 << 7), /* invalid argument */ |
| 236 | AC_ERR_OTHER = (1 << 8), /* unknown */ |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 237 | }; |
| 238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | /* forward declarations */ |
| 240 | struct scsi_device; |
| 241 | struct ata_port_operations; |
| 242 | struct ata_port; |
| 243 | struct ata_queued_cmd; |
| 244 | |
| 245 | /* typedefs */ |
Tejun Heo | 77853bf | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 246 | typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); |
Tejun Heo | a62c0fc | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 247 | typedef int (*ata_reset_fn_t)(struct ata_port *, int, unsigned int *); |
| 248 | typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | struct ata_ioports { |
| 251 | unsigned long cmd_addr; |
| 252 | unsigned long data_addr; |
| 253 | unsigned long error_addr; |
| 254 | unsigned long feature_addr; |
| 255 | unsigned long nsect_addr; |
| 256 | unsigned long lbal_addr; |
| 257 | unsigned long lbam_addr; |
| 258 | unsigned long lbah_addr; |
| 259 | unsigned long device_addr; |
| 260 | unsigned long status_addr; |
| 261 | unsigned long command_addr; |
| 262 | unsigned long altstatus_addr; |
| 263 | unsigned long ctl_addr; |
| 264 | unsigned long bmdma_addr; |
| 265 | unsigned long scr_addr; |
| 266 | }; |
| 267 | |
| 268 | struct ata_probe_ent { |
| 269 | struct list_head node; |
| 270 | struct device *dev; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 271 | const struct ata_port_operations *port_ops; |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 272 | struct scsi_host_template *sht; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | struct ata_ioports port[ATA_MAX_PORTS]; |
| 274 | unsigned int n_ports; |
| 275 | unsigned int hard_port_no; |
| 276 | unsigned int pio_mask; |
| 277 | unsigned int mwdma_mask; |
| 278 | unsigned int udma_mask; |
| 279 | unsigned int legacy_mode; |
| 280 | unsigned long irq; |
| 281 | unsigned int irq_flags; |
| 282 | unsigned long host_flags; |
| 283 | void __iomem *mmio_base; |
| 284 | void *private_data; |
| 285 | }; |
| 286 | |
| 287 | struct ata_host_set { |
| 288 | spinlock_t lock; |
| 289 | struct device *dev; |
| 290 | unsigned long irq; |
| 291 | void __iomem *mmio_base; |
| 292 | unsigned int n_ports; |
| 293 | void *private_data; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 294 | const struct ata_port_operations *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | struct ata_port * ports[0]; |
| 296 | }; |
| 297 | |
| 298 | struct ata_queued_cmd { |
| 299 | struct ata_port *ap; |
| 300 | struct ata_device *dev; |
| 301 | |
| 302 | struct scsi_cmnd *scsicmd; |
| 303 | void (*scsidone)(struct scsi_cmnd *); |
| 304 | |
| 305 | struct ata_taskfile tf; |
| 306 | u8 cdb[ATAPI_CDB_LEN]; |
| 307 | |
| 308 | unsigned long flags; /* ATA_QCFLAG_xxx */ |
| 309 | unsigned int tag; |
| 310 | unsigned int n_elem; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 311 | unsigned int orig_n_elem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | int dma_dir; |
| 314 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 315 | unsigned int pad_len; |
| 316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | unsigned int nsect; |
| 318 | unsigned int cursect; |
| 319 | |
| 320 | unsigned int nbytes; |
| 321 | unsigned int curbytes; |
| 322 | |
| 323 | unsigned int cursg; |
| 324 | unsigned int cursg_ofs; |
| 325 | |
| 326 | struct scatterlist sgent; |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 327 | struct scatterlist pad_sgent; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | void *buf_virt; |
| 329 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 330 | /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ |
| 331 | struct scatterlist *__sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 333 | unsigned int err_mask; |
| 334 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | ata_qc_cb_t complete_fn; |
| 336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | void *private_data; |
| 338 | }; |
| 339 | |
| 340 | struct ata_host_stats { |
| 341 | unsigned long unhandled_irq; |
| 342 | unsigned long idle_irq; |
| 343 | unsigned long rw_reqbuf; |
| 344 | }; |
| 345 | |
| 346 | struct ata_device { |
| 347 | u64 n_sectors; /* size of device, if ATA */ |
| 348 | unsigned long flags; /* ATA_DFLAG_xxx */ |
| 349 | unsigned int class; /* ATA_DEV_xxx */ |
| 350 | unsigned int devno; /* 0 or 1 */ |
| 351 | u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ |
| 352 | u8 pio_mode; |
| 353 | u8 dma_mode; |
| 354 | u8 xfer_mode; |
| 355 | unsigned int xfer_shift; /* ATA_SHIFT_xxx */ |
| 356 | |
Albert Lee | 8cbd6df | 2005-10-12 15:06:27 +0800 | [diff] [blame] | 357 | unsigned int multi_count; /* sectors count for |
| 358 | READ/WRITE MULTIPLE */ |
Albert Lee | 8bf62ece | 2005-05-12 15:29:42 -0400 | [diff] [blame] | 359 | |
| 360 | /* for CHS addressing */ |
| 361 | u16 cylinders; /* Number of cylinders */ |
| 362 | u16 heads; /* Number of heads */ |
| 363 | u16 sectors; /* Number of sectors per track */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | }; |
| 365 | |
| 366 | struct ata_port { |
| 367 | struct Scsi_Host *host; /* our co-allocated scsi host */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 368 | const struct ata_port_operations *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | unsigned long flags; /* ATA_FLAG_xxx */ |
| 370 | unsigned int id; /* unique id req'd by scsi midlyr */ |
| 371 | unsigned int port_no; /* unique port #; from zero */ |
| 372 | unsigned int hard_port_no; /* hardware port #; from zero */ |
| 373 | |
| 374 | struct ata_prd *prd; /* our SG list */ |
| 375 | dma_addr_t prd_dma; /* and its DMA mapping */ |
| 376 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 377 | void *pad; /* array of DMA pad buffers */ |
| 378 | dma_addr_t pad_dma; |
| 379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ |
| 381 | |
| 382 | u8 ctl; /* cache of ATA control register */ |
| 383 | u8 last_ctl; /* Cache last written value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | unsigned int pio_mask; |
| 385 | unsigned int mwdma_mask; |
| 386 | unsigned int udma_mask; |
| 387 | unsigned int cbl; /* cable type; ATA_CBL_xxx */ |
| 388 | unsigned int cdb_len; |
| 389 | |
| 390 | struct ata_device device[ATA_MAX_DEVICES]; |
| 391 | |
| 392 | struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; |
| 393 | unsigned long qactive; |
| 394 | unsigned int active_tag; |
| 395 | |
| 396 | struct ata_host_stats stats; |
| 397 | struct ata_host_set *host_set; |
| 398 | |
| 399 | struct work_struct packet_task; |
| 400 | |
| 401 | struct work_struct pio_task; |
Albert Lee | 14be71f | 2005-09-27 17:36:35 +0800 | [diff] [blame] | 402 | unsigned int hsm_task_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | unsigned long pio_task_timeout; |
| 404 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 405 | u32 msg_enable; |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 406 | struct list_head eh_done_q; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | void *private_data; |
| 409 | }; |
| 410 | |
| 411 | struct ata_port_operations { |
| 412 | void (*port_disable) (struct ata_port *); |
| 413 | |
| 414 | void (*dev_config) (struct ata_port *, struct ata_device *); |
| 415 | |
| 416 | void (*set_piomode) (struct ata_port *, struct ata_device *); |
| 417 | void (*set_dmamode) (struct ata_port *, struct ata_device *); |
| 418 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 419 | void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); |
| 421 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 422 | void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | u8 (*check_status)(struct ata_port *ap); |
| 424 | u8 (*check_altstatus)(struct ata_port *ap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | void (*dev_select)(struct ata_port *ap, unsigned int device); |
| 426 | |
Tejun Heo | c19ba8a | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 427 | void (*phy_reset) (struct ata_port *ap); /* obsolete */ |
| 428 | int (*probe_reset) (struct ata_port *ap, unsigned int *classes); |
| 429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | void (*post_set_mode) (struct ata_port *ap); |
| 431 | |
| 432 | int (*check_atapi_dma) (struct ata_queued_cmd *qc); |
| 433 | |
| 434 | void (*bmdma_setup) (struct ata_queued_cmd *qc); |
| 435 | void (*bmdma_start) (struct ata_queued_cmd *qc); |
| 436 | |
| 437 | void (*qc_prep) (struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 438 | unsigned int (*qc_issue) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | void (*eng_timeout) (struct ata_port *ap); |
| 441 | |
| 442 | irqreturn_t (*irq_handler)(int, void *, struct pt_regs *); |
| 443 | void (*irq_clear) (struct ata_port *); |
| 444 | |
| 445 | u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg); |
| 446 | void (*scr_write) (struct ata_port *ap, unsigned int sc_reg, |
| 447 | u32 val); |
| 448 | |
| 449 | int (*port_start) (struct ata_port *ap); |
| 450 | void (*port_stop) (struct ata_port *ap); |
| 451 | |
| 452 | void (*host_stop) (struct ata_host_set *host_set); |
| 453 | |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 454 | void (*bmdma_stop) (struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | u8 (*bmdma_status) (struct ata_port *ap); |
| 456 | }; |
| 457 | |
| 458 | struct ata_port_info { |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 459 | struct scsi_host_template *sht; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | unsigned long host_flags; |
| 461 | unsigned long pio_mask; |
| 462 | unsigned long mwdma_mask; |
| 463 | unsigned long udma_mask; |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 464 | const struct ata_port_operations *port_ops; |
Alan Cox | e99f8b5 | 2005-11-08 14:09:44 +0000 | [diff] [blame] | 465 | void *private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | }; |
| 467 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 468 | struct ata_timing { |
| 469 | unsigned short mode; /* ATA mode */ |
| 470 | unsigned short setup; /* t1 */ |
| 471 | unsigned short act8b; /* t2 for 8-bit I/O */ |
| 472 | unsigned short rec8b; /* t2i for 8-bit I/O */ |
| 473 | unsigned short cyc8b; /* t0 for 8-bit I/O */ |
| 474 | unsigned short active; /* t2 or tD */ |
| 475 | unsigned short recover; /* t2i or tK */ |
| 476 | unsigned short cycle; /* t0 */ |
| 477 | unsigned short udma; /* t2CYCTYP/2 */ |
| 478 | }; |
| 479 | |
| 480 | #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] | 481 | |
| 482 | extern void ata_port_probe(struct ata_port *); |
| 483 | extern void __sata_phy_reset(struct ata_port *ap); |
| 484 | extern void sata_phy_reset(struct ata_port *ap); |
| 485 | extern void ata_bus_reset(struct ata_port *ap); |
Tejun Heo | a62c0fc | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 486 | extern int ata_drive_probe_reset(struct ata_port *ap, |
| 487 | ata_reset_fn_t softreset, ata_reset_fn_t hardreset, |
| 488 | ata_postreset_fn_t postreset, unsigned int *classes); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 489 | extern int ata_std_softreset(struct ata_port *ap, int verbose, |
| 490 | unsigned int *classes); |
| 491 | extern int sata_std_hardreset(struct ata_port *ap, int verbose, |
| 492 | unsigned int *class); |
| 493 | extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | extern void ata_port_disable(struct ata_port *); |
| 495 | extern void ata_std_ports(struct ata_ioports *ioaddr); |
| 496 | #ifdef CONFIG_PCI |
| 497 | extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info, |
| 498 | unsigned int n_ports); |
| 499 | extern void ata_pci_remove_one (struct pci_dev *pdev); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 500 | extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state); |
| 501 | extern int ata_pci_device_resume(struct pci_dev *pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | #endif /* CONFIG_PCI */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 503 | extern int ata_device_add(const struct ata_probe_ent *ent); |
Alan Cox | 17b1445 | 2005-09-15 15:44:00 +0100 | [diff] [blame] | 504 | extern void ata_host_set_remove(struct ata_host_set *host_set); |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 505 | extern int ata_scsi_detect(struct scsi_host_template *sht); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); |
| 507 | extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); |
| 508 | extern int ata_scsi_error(struct Scsi_Host *host); |
Tejun Heo | a72ec4c | 2006-01-23 13:09:37 +0900 | [diff] [blame] | 509 | extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); |
| 510 | extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | extern int ata_scsi_release(struct Scsi_Host *host); |
| 512 | extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); |
Jens Axboe | 9b84754 | 2006-01-06 09:28:07 +0100 | [diff] [blame] | 513 | extern int ata_scsi_device_resume(struct scsi_device *); |
| 514 | extern int ata_scsi_device_suspend(struct scsi_device *); |
| 515 | extern int ata_device_resume(struct ata_port *, struct ata_device *); |
| 516 | extern int ata_device_suspend(struct ata_port *, struct ata_device *); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 517 | extern int ata_ratelimit(void); |
Tejun Heo | 6f8b995 | 2006-01-24 17:05:21 +0900 | [diff] [blame] | 518 | extern unsigned int ata_busy_sleep(struct ata_port *ap, |
| 519 | unsigned long timeout_pat, |
| 520 | unsigned long timeout); |
Jeff Garzik | 67846b3 | 2005-10-05 02:58:32 -0400 | [diff] [blame] | 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | /* |
| 523 | * Default driver ops implementations |
| 524 | */ |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 525 | 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] | 526 | 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] | 527 | extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp); |
| 528 | 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] | 529 | extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); |
| 530 | extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); |
| 531 | extern u8 ata_check_status(struct ata_port *ap); |
| 532 | extern u8 ata_altstatus(struct ata_port *ap); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 533 | extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); |
Tejun Heo | c2bd580 | 2006-01-24 17:05:22 +0900 | [diff] [blame] | 534 | extern int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | extern int ata_port_start (struct ata_port *ap); |
| 536 | extern void ata_port_stop (struct ata_port *ap); |
Jeff Garzik | aa8f0dc | 2005-05-26 21:54:27 -0400 | [diff] [blame] | 537 | extern void ata_host_stop (struct ata_host_set *host_set); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs); |
| 539 | extern void ata_qc_prep(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 540 | extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, |
| 542 | unsigned int buflen); |
| 543 | extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| 544 | unsigned int n_elem); |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 545 | extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); |
| 546 | extern void ata_dev_id_string(const u16 *id, unsigned char *s, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | unsigned int ofs, unsigned int len); |
Brad Campbell | 6f2f381 | 2005-05-12 15:07:47 -0400 | [diff] [blame] | 548 | extern void ata_dev_config(struct ata_port *ap, unsigned int i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | extern void ata_bmdma_setup (struct ata_queued_cmd *qc); |
| 550 | extern void ata_bmdma_start (struct ata_queued_cmd *qc); |
Alan Cox | b73fc89 | 2005-08-26 16:03:19 +0100 | [diff] [blame] | 551 | extern void ata_bmdma_stop(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | extern u8 ata_bmdma_status(struct ata_port *ap); |
| 553 | extern void ata_bmdma_irq_clear(struct ata_port *ap); |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 554 | extern void ata_qc_complete(struct ata_queued_cmd *qc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | extern void ata_eng_timeout(struct ata_port *ap); |
Tejun Heo | 9a3dccc | 2006-01-06 09:56:18 +0100 | [diff] [blame] | 556 | extern void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev, |
| 557 | struct scsi_cmnd *cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | void (*done)(struct scsi_cmnd *)); |
| 559 | extern int ata_std_bios_param(struct scsi_device *sdev, |
| 560 | struct block_device *bdev, |
| 561 | sector_t capacity, int geom[]); |
| 562 | extern int ata_scsi_slave_config(struct scsi_device *sdev); |
| 563 | |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 564 | /* |
| 565 | * Timing helpers |
| 566 | */ |
Alan Cox | 1bc4ccf | 2006-01-09 17:18:14 +0000 | [diff] [blame] | 567 | |
| 568 | extern unsigned int ata_pio_need_iordy(const struct ata_device *); |
Alan Cox | 452503f | 2005-10-21 19:01:32 -0400 | [diff] [blame] | 569 | extern int ata_timing_compute(struct ata_device *, unsigned short, |
| 570 | struct ata_timing *, int, int); |
| 571 | extern void ata_timing_merge(const struct ata_timing *, |
| 572 | const struct ata_timing *, struct ata_timing *, |
| 573 | unsigned int); |
| 574 | |
| 575 | enum { |
| 576 | ATA_TIMING_SETUP = (1 << 0), |
| 577 | ATA_TIMING_ACT8B = (1 << 1), |
| 578 | ATA_TIMING_REC8B = (1 << 2), |
| 579 | ATA_TIMING_CYC8B = (1 << 3), |
| 580 | ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | |
| 581 | ATA_TIMING_CYC8B, |
| 582 | ATA_TIMING_ACTIVE = (1 << 4), |
| 583 | ATA_TIMING_RECOVER = (1 << 5), |
| 584 | ATA_TIMING_CYCLE = (1 << 6), |
| 585 | ATA_TIMING_UDMA = (1 << 7), |
| 586 | ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | |
| 587 | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | |
| 588 | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | |
| 589 | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, |
| 590 | }; |
| 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
| 593 | #ifdef CONFIG_PCI |
| 594 | struct pci_bits { |
| 595 | unsigned int reg; /* PCI config register to read */ |
| 596 | unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ |
| 597 | unsigned long mask; |
| 598 | unsigned long val; |
| 599 | }; |
| 600 | |
Jeff Garzik | 374b187 | 2005-08-30 05:42:52 -0400 | [diff] [blame] | 601 | extern void ata_pci_host_stop (struct ata_host_set *host_set); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | extern struct ata_probe_ent * |
Alan Cox | 47a8659 | 2005-10-04 08:09:19 -0400 | [diff] [blame] | 603 | 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] | 604 | extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
| 606 | #endif /* CONFIG_PCI */ |
| 607 | |
| 608 | |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 609 | static inline int |
| 610 | ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 611 | { |
| 612 | if (sg == &qc->pad_sgent) |
| 613 | return 1; |
| 614 | if (qc->pad_len) |
| 615 | return 0; |
| 616 | if (((sg - qc->__sg) + 1) == qc->n_elem) |
| 617 | return 1; |
| 618 | return 0; |
| 619 | } |
| 620 | |
Jeff Garzik | cedc9a4 | 2005-10-05 07:13:30 -0400 | [diff] [blame] | 621 | static inline struct scatterlist * |
| 622 | ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) |
| 623 | { |
| 624 | if (sg == &qc->pad_sgent) |
| 625 | return NULL; |
| 626 | if (++sg - qc->__sg < qc->n_elem) |
| 627 | return sg; |
| 628 | return qc->pad_len ? &qc->pad_sgent : NULL; |
| 629 | } |
| 630 | |
| 631 | #define ata_for_each_sg(sg, qc) \ |
| 632 | for (sg = qc->__sg; sg; sg = ata_qc_next_sg(sg, qc)) |
| 633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | static inline unsigned int ata_tag_valid(unsigned int tag) |
| 635 | { |
| 636 | return (tag < ATA_MAX_QUEUE) ? 1 : 0; |
| 637 | } |
| 638 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 639 | static inline unsigned int ata_dev_present(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | { |
| 641 | return ((dev->class == ATA_DEV_ATA) || |
| 642 | (dev->class == ATA_DEV_ATAPI)); |
| 643 | } |
| 644 | |
| 645 | static inline u8 ata_chk_status(struct ata_port *ap) |
| 646 | { |
| 647 | return ap->ops->check_status(ap); |
| 648 | } |
| 649 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 650 | |
| 651 | /** |
| 652 | * ata_pause - Flush writes and pause 400 nanoseconds. |
| 653 | * @ap: Port to wait for. |
| 654 | * |
| 655 | * LOCKING: |
| 656 | * Inherited from caller. |
| 657 | */ |
| 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | static inline void ata_pause(struct ata_port *ap) |
| 660 | { |
| 661 | ata_altstatus(ap); |
| 662 | ndelay(400); |
| 663 | } |
| 664 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 665 | |
| 666 | /** |
| 667 | * ata_busy_wait - Wait for a port status register |
| 668 | * @ap: Port to wait for. |
| 669 | * |
| 670 | * Waits up to max*10 microseconds for the selected bits in the port's |
| 671 | * status register to be cleared. |
| 672 | * Returns final value of status register. |
| 673 | * |
| 674 | * LOCKING: |
| 675 | * Inherited from caller. |
| 676 | */ |
| 677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, |
| 679 | unsigned int max) |
| 680 | { |
| 681 | u8 status; |
| 682 | |
| 683 | do { |
| 684 | udelay(10); |
| 685 | status = ata_chk_status(ap); |
| 686 | max--; |
| 687 | } while ((status & bits) && (max > 0)); |
| 688 | |
| 689 | return status; |
| 690 | } |
| 691 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 692 | |
| 693 | /** |
| 694 | * ata_wait_idle - Wait for a port to be idle. |
| 695 | * @ap: Port to wait for. |
| 696 | * |
| 697 | * Waits up to 10ms for port's BUSY and DRQ signals to clear. |
| 698 | * Returns final value of status register. |
| 699 | * |
| 700 | * LOCKING: |
| 701 | * Inherited from caller. |
| 702 | */ |
| 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | static inline u8 ata_wait_idle(struct ata_port *ap) |
| 705 | { |
| 706 | u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
| 707 | |
| 708 | if (status & (ATA_BUSY | ATA_DRQ)) { |
| 709 | unsigned long l = ap->ioaddr.status_addr; |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 710 | if (ata_msg_warn(ap)) |
| 711 | printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n", |
| 712 | status, l); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | return status; |
| 716 | } |
| 717 | |
| 718 | static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) |
| 719 | { |
| 720 | qc->tf.ctl |= ATA_NIEN; |
| 721 | } |
| 722 | |
| 723 | static inline struct ata_queued_cmd *ata_qc_from_tag (struct ata_port *ap, |
| 724 | unsigned int tag) |
| 725 | { |
| 726 | if (likely(ata_tag_valid(tag))) |
| 727 | return &ap->qcmd[tag]; |
| 728 | return NULL; |
| 729 | } |
| 730 | |
| 731 | static inline void ata_tf_init(struct ata_port *ap, struct ata_taskfile *tf, unsigned int device) |
| 732 | { |
| 733 | memset(tf, 0, sizeof(*tf)); |
| 734 | |
| 735 | tf->ctl = ap->ctl; |
| 736 | if (device == 0) |
| 737 | tf->device = ATA_DEVICE_OBS; |
| 738 | else |
| 739 | tf->device = ATA_DEVICE_OBS | ATA_DEV1; |
| 740 | } |
| 741 | |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 742 | static inline void ata_qc_reinit(struct ata_queued_cmd *qc) |
| 743 | { |
| 744 | qc->__sg = NULL; |
| 745 | qc->flags = 0; |
| 746 | qc->cursect = qc->cursg = qc->cursg_ofs = 0; |
| 747 | qc->nsect = 0; |
| 748 | qc->nbytes = qc->curbytes = 0; |
Albert Lee | a22e2eb | 2005-12-05 15:38:02 +0800 | [diff] [blame] | 749 | qc->err_mask = 0; |
Jeff Garzik | 2c13b7c | 2005-11-14 14:14:16 -0500 | [diff] [blame] | 750 | |
| 751 | ata_tf_init(qc->ap, &qc->tf, qc->dev->devno); |
| 752 | } |
| 753 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 754 | |
| 755 | /** |
| 756 | * ata_irq_on - Enable interrupts on a port. |
| 757 | * @ap: Port on which interrupts are enabled. |
| 758 | * |
| 759 | * Enable interrupts on a legacy IDE device using MMIO or PIO, |
| 760 | * wait for idle, clear any pending interrupts. |
| 761 | * |
| 762 | * LOCKING: |
| 763 | * Inherited from caller. |
| 764 | */ |
| 765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | static inline u8 ata_irq_on(struct ata_port *ap) |
| 767 | { |
| 768 | struct ata_ioports *ioaddr = &ap->ioaddr; |
| 769 | u8 tmp; |
| 770 | |
| 771 | ap->ctl &= ~ATA_NIEN; |
| 772 | ap->last_ctl = ap->ctl; |
| 773 | |
| 774 | if (ap->flags & ATA_FLAG_MMIO) |
| 775 | writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr); |
| 776 | else |
| 777 | outb(ap->ctl, ioaddr->ctl_addr); |
| 778 | tmp = ata_wait_idle(ap); |
| 779 | |
| 780 | ap->ops->irq_clear(ap); |
| 781 | |
| 782 | return tmp; |
| 783 | } |
| 784 | |
Edward Falk | 0baab86 | 2005-06-02 18:17:13 -0400 | [diff] [blame] | 785 | |
| 786 | /** |
| 787 | * ata_irq_ack - Acknowledge a device interrupt. |
| 788 | * @ap: Port on which interrupts are enabled. |
| 789 | * |
| 790 | * Wait up to 10 ms for legacy IDE device to become idle (BUSY |
| 791 | * or BUSY+DRQ clear). Obtain dma status and port status from |
| 792 | * device. Clear the interrupt. Return port status. |
| 793 | * |
| 794 | * LOCKING: |
| 795 | */ |
| 796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) |
| 798 | { |
| 799 | unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; |
| 800 | u8 host_stat, post_stat, status; |
| 801 | |
| 802 | status = ata_busy_wait(ap, bits, 1000); |
| 803 | if (status & bits) |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 804 | if (ata_msg_err(ap)) |
| 805 | printk(KERN_ERR "abnormal status 0x%X\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | |
| 807 | /* get controller status; clear intr, err bits */ |
| 808 | if (ap->flags & ATA_FLAG_MMIO) { |
| 809 | void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr; |
| 810 | host_stat = readb(mmio + ATA_DMA_STATUS); |
| 811 | writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, |
| 812 | mmio + ATA_DMA_STATUS); |
| 813 | |
| 814 | post_stat = readb(mmio + ATA_DMA_STATUS); |
| 815 | } else { |
| 816 | host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 817 | outb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, |
| 818 | ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 819 | |
| 820 | post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
| 821 | } |
| 822 | |
Randy Dunlap | bfd6057 | 2006-01-17 19:34:42 -0500 | [diff] [blame] | 823 | if (ata_msg_intr(ap)) |
| 824 | printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", |
| 825 | __FUNCTION__, |
| 826 | host_stat, post_stat, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | return status; |
| 829 | } |
| 830 | |
| 831 | static inline u32 scr_read(struct ata_port *ap, unsigned int reg) |
| 832 | { |
| 833 | return ap->ops->scr_read(ap, reg); |
| 834 | } |
| 835 | |
| 836 | static inline void scr_write(struct ata_port *ap, unsigned int reg, u32 val) |
| 837 | { |
| 838 | ap->ops->scr_write(ap, reg, val); |
| 839 | } |
| 840 | |
Jeff Garzik | 8a60a07 | 2005-07-31 13:13:24 -0400 | [diff] [blame] | 841 | static inline void scr_write_flush(struct ata_port *ap, unsigned int reg, |
Brett Russ | cdcca89e | 2005-03-28 15:10:27 -0500 | [diff] [blame] | 842 | u32 val) |
| 843 | { |
| 844 | ap->ops->scr_write(ap, reg, val); |
| 845 | (void) ap->ops->scr_read(ap, reg); |
| 846 | } |
| 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | static inline unsigned int sata_dev_present(struct ata_port *ap) |
| 849 | { |
| 850 | return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0; |
| 851 | } |
| 852 | |
Jeff Garzik | 057ace5 | 2005-10-22 14:27:05 -0400 | [diff] [blame] | 853 | static inline int ata_try_flush_cache(const struct ata_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | { |
| 855 | return ata_id_wcache_enabled(dev->id) || |
| 856 | ata_id_has_flush(dev->id) || |
| 857 | ata_id_has_flush_ext(dev->id); |
| 858 | } |
| 859 | |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 860 | static inline unsigned int ac_err_mask(u8 status) |
| 861 | { |
| 862 | if (status & ATA_BUSY) |
Tejun Heo | 11a56d2 | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 863 | return AC_ERR_HSM; |
Jeff Garzik | a7dac44 | 2005-10-30 04:44:42 -0500 | [diff] [blame] | 864 | if (status & (ATA_ERR | ATA_DF)) |
| 865 | return AC_ERR_DEV; |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | static inline unsigned int __ac_err_mask(u8 status) |
| 870 | { |
| 871 | unsigned int mask = ac_err_mask(status); |
| 872 | if (mask == 0) |
| 873 | return AC_ERR_OTHER; |
| 874 | return mask; |
| 875 | } |
| 876 | |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 877 | static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) |
| 878 | { |
| 879 | ap->pad_dma = 0; |
| 880 | ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, |
| 881 | &ap->pad_dma, GFP_KERNEL); |
| 882 | return (ap->pad == NULL) ? -ENOMEM : 0; |
| 883 | } |
| 884 | |
| 885 | static inline void ata_pad_free(struct ata_port *ap, struct device *dev) |
| 886 | { |
| 887 | dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); |
| 888 | } |
| 889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | #endif /* __LINUX_LIBATA_H__ */ |