Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/ide-taskfile.c Version 0.38 March 05, 2003 |
| 3 | * |
| 4 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> |
| 5 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> |
| 6 | * Copyright (C) 2001-2002 Klaus Smolin |
| 7 | * IBM Storage Technology Division |
| 8 | * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz |
| 9 | * |
| 10 | * The big the bad and the ugly. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | */ |
| 12 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/string.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/timer.h> |
| 18 | #include <linux/mm.h> |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 19 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/major.h> |
| 22 | #include <linux/errno.h> |
| 23 | #include <linux/genhd.h> |
| 24 | #include <linux/blkpg.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/pci.h> |
| 27 | #include <linux/delay.h> |
| 28 | #include <linux/hdreg.h> |
| 29 | #include <linux/ide.h> |
| 30 | #include <linux/bitops.h> |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 31 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #include <asm/byteorder.h> |
| 34 | #include <asm/irq.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <asm/io.h> |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | static void ata_bswap_data (void *buffer, int wcount) |
| 39 | { |
| 40 | u16 *p = buffer; |
| 41 | |
| 42 | while (wcount--) { |
| 43 | *p = *p << 8 | *p >> 8; p++; |
| 44 | *p = *p << 8 | *p >> 8; p++; |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | static void taskfile_input_data(ide_drive_t *drive, void *buffer, u32 wcount) |
| 49 | { |
| 50 | HWIF(drive)->ata_input_data(drive, buffer, wcount); |
| 51 | if (drive->bswap) |
| 52 | ata_bswap_data(buffer, wcount); |
| 53 | } |
| 54 | |
| 55 | static void taskfile_output_data(ide_drive_t *drive, void *buffer, u32 wcount) |
| 56 | { |
| 57 | if (drive->bswap) { |
| 58 | ata_bswap_data(buffer, wcount); |
| 59 | HWIF(drive)->ata_output_data(drive, buffer, wcount); |
| 60 | ata_bswap_data(buffer, wcount); |
| 61 | } else { |
| 62 | HWIF(drive)->ata_output_data(drive, buffer, wcount); |
| 63 | } |
| 64 | } |
| 65 | |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 66 | void ide_tf_load(ide_drive_t *drive, ide_task_t *task) |
| 67 | { |
| 68 | ide_hwif_t *hwif = drive->hwif; |
| 69 | struct ide_taskfile *tf = &task->tf; |
| 70 | u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF; |
| 71 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 72 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
| 73 | HIHI = 0xFF; |
| 74 | |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 75 | if (IDE_CONTROL_REG) |
| 76 | hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */ |
| 77 | |
| 78 | if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0) |
| 79 | SELECT_MASK(drive, 0); |
| 80 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 81 | if (task->tf_flags & IDE_TFLAG_OUT_DATA) |
| 82 | hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG); |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 83 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 84 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE) |
| 85 | hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG); |
| 86 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT) |
| 87 | hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG); |
| 88 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL) |
| 89 | hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG); |
| 90 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM) |
| 91 | hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG); |
| 92 | if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH) |
| 93 | hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG); |
| 94 | |
| 95 | if (task->tf_flags & IDE_TFLAG_OUT_FEATURE) |
| 96 | hwif->OUTB(tf->feature, IDE_FEATURE_REG); |
| 97 | if (task->tf_flags & IDE_TFLAG_OUT_NSECT) |
| 98 | hwif->OUTB(tf->nsect, IDE_NSECTOR_REG); |
| 99 | if (task->tf_flags & IDE_TFLAG_OUT_LBAL) |
| 100 | hwif->OUTB(tf->lbal, IDE_SECTOR_REG); |
| 101 | if (task->tf_flags & IDE_TFLAG_OUT_LBAM) |
| 102 | hwif->OUTB(tf->lbam, IDE_LCYL_REG); |
| 103 | if (task->tf_flags & IDE_TFLAG_OUT_LBAH) |
| 104 | hwif->OUTB(tf->lbah, IDE_HCYL_REG); |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 105 | |
| 106 | hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG); |
| 107 | } |
| 108 | |
| 109 | EXPORT_SYMBOL_GPL(ide_tf_load); |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
| 112 | { |
| 113 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 116 | args.tf.nsect = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (drive->media == ide_disk) |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 118 | args.tf.command = WIN_IDENTIFY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | else |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 120 | args.tf.command = WIN_PIDENTIFY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | args.command_type = IDE_DRIVE_TASK_IN; |
| 122 | args.data_phase = TASKFILE_IN; |
| 123 | args.handler = &task_in_intr; |
| 124 | return ide_raw_taskfile(drive, &args, buf); |
| 125 | } |
| 126 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 127 | static int inline task_dma_ok(ide_task_t *task) |
| 128 | { |
| 129 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
| 130 | return 1; |
| 131 | |
| 132 | switch (task->tf.command) { |
| 133 | case WIN_WRITEDMA_ONCE: |
| 134 | case WIN_WRITEDMA: |
| 135 | case WIN_WRITEDMA_EXT: |
| 136 | case WIN_READDMA_ONCE: |
| 137 | case WIN_READDMA: |
| 138 | case WIN_READDMA_EXT: |
| 139 | case WIN_IDENTIFY_DMA: |
| 140 | return 1; |
| 141 | } |
| 142 | |
| 143 | return 0; |
| 144 | } |
| 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
| 147 | { |
| 148 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 149 | struct ide_taskfile *tf = &task->tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 151 | ide_tf_load(drive, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | if (task->handler != NULL) { |
| 154 | if (task->prehandler != NULL) { |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 155 | hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | ndelay(400); /* FIXME */ |
| 157 | return task->prehandler(drive, task->rq); |
| 158 | } |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 159 | ide_execute_command(drive, tf->command, task->handler, WAIT_WORSTCASE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | return ide_started; |
| 161 | } |
| 162 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 163 | if (task_dma_ok(task) && drive->using_dma && !hwif->dma_setup(drive)) { |
| 164 | hwif->dma_exec_cmd(drive, tf->command); |
| 165 | hwif->dma_start(drive); |
| 166 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | return ide_stopped; |
| 170 | } |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | /* |
| 173 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. |
| 174 | */ |
| 175 | ide_startstop_t set_multmode_intr (ide_drive_t *drive) |
| 176 | { |
| 177 | ide_hwif_t *hwif = HWIF(drive); |
| 178 | u8 stat; |
| 179 | |
| 180 | if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { |
| 181 | drive->mult_count = drive->mult_req; |
| 182 | } else { |
| 183 | drive->mult_req = drive->mult_count = 0; |
| 184 | drive->special.b.recalibrate = 1; |
| 185 | (void) ide_dump_status(drive, "set_multmode", stat); |
| 186 | } |
| 187 | return ide_stopped; |
| 188 | } |
| 189 | |
| 190 | /* |
| 191 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. |
| 192 | */ |
| 193 | ide_startstop_t set_geometry_intr (ide_drive_t *drive) |
| 194 | { |
| 195 | ide_hwif_t *hwif = HWIF(drive); |
| 196 | int retries = 5; |
| 197 | u8 stat; |
| 198 | |
| 199 | while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--) |
| 200 | udelay(10); |
| 201 | |
| 202 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
| 203 | return ide_stopped; |
| 204 | |
| 205 | if (stat & (ERR_STAT|DRQ_STAT)) |
| 206 | return ide_error(drive, "set_geometry_intr", stat); |
| 207 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 208 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
| 210 | return ide_started; |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. |
| 215 | */ |
| 216 | ide_startstop_t recal_intr (ide_drive_t *drive) |
| 217 | { |
| 218 | ide_hwif_t *hwif = HWIF(drive); |
| 219 | u8 stat; |
| 220 | |
| 221 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) |
| 222 | return ide_error(drive, "recal_intr", stat); |
| 223 | return ide_stopped; |
| 224 | } |
| 225 | |
| 226 | /* |
| 227 | * Handler for commands without a data phase |
| 228 | */ |
| 229 | ide_startstop_t task_no_data_intr (ide_drive_t *drive) |
| 230 | { |
| 231 | ide_task_t *args = HWGROUP(drive)->rq->special; |
| 232 | ide_hwif_t *hwif = HWIF(drive); |
| 233 | u8 stat; |
| 234 | |
Ingo Molnar | 366c7f5 | 2006-07-03 00:25:25 -0700 | [diff] [blame] | 235 | local_irq_enable_in_hardirq(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) { |
| 237 | return ide_error(drive, "task_no_data_intr", stat); |
| 238 | /* calls ide_end_drive_cmd */ |
| 239 | } |
| 240 | if (args) |
| 241 | ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG)); |
| 242 | |
| 243 | return ide_stopped; |
| 244 | } |
| 245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
| 247 | { |
| 248 | ide_hwif_t *hwif = HWIF(drive); |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 249 | int retries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | u8 stat; |
| 251 | |
| 252 | /* |
| 253 | * Last sector was transfered, wait until drive is ready. |
| 254 | * This can take up to 10 usec, but we will wait max 1 ms |
| 255 | * (drive_cmd_intr() waits that long). |
| 256 | */ |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 257 | for (retries = 0; retries < 100; retries++) { |
| 258 | if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) |
| 259 | udelay(10); |
| 260 | else |
| 261 | break; |
| 262 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 264 | if (stat & BUSY_STAT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
| 266 | |
| 267 | return stat; |
| 268 | } |
| 269 | |
| 270 | static void ide_pio_sector(ide_drive_t *drive, unsigned int write) |
| 271 | { |
| 272 | ide_hwif_t *hwif = drive->hwif; |
| 273 | struct scatterlist *sg = hwif->sg_table; |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 274 | struct scatterlist *cursg = hwif->cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | struct page *page; |
| 276 | #ifdef CONFIG_HIGHMEM |
| 277 | unsigned long flags; |
| 278 | #endif |
| 279 | unsigned int offset; |
| 280 | u8 *buf; |
| 281 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 282 | cursg = hwif->cursg; |
| 283 | if (!cursg) { |
| 284 | cursg = sg; |
| 285 | hwif->cursg = sg; |
| 286 | } |
| 287 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 288 | page = sg_page(cursg); |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 289 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
| 291 | /* get the current page and offset */ |
| 292 | page = nth_page(page, (offset >> PAGE_SHIFT)); |
| 293 | offset %= PAGE_SIZE; |
| 294 | |
| 295 | #ifdef CONFIG_HIGHMEM |
| 296 | local_irq_save(flags); |
| 297 | #endif |
| 298 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; |
| 299 | |
| 300 | hwif->nleft--; |
| 301 | hwif->cursg_ofs++; |
| 302 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 303 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
| 304 | hwif->cursg = sg_next(hwif->cursg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | hwif->cursg_ofs = 0; |
| 306 | } |
| 307 | |
| 308 | /* do the actual data transfer */ |
| 309 | if (write) |
| 310 | taskfile_output_data(drive, buf, SECTOR_WORDS); |
| 311 | else |
| 312 | taskfile_input_data(drive, buf, SECTOR_WORDS); |
| 313 | |
| 314 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); |
| 315 | #ifdef CONFIG_HIGHMEM |
| 316 | local_irq_restore(flags); |
| 317 | #endif |
| 318 | } |
| 319 | |
| 320 | static void ide_pio_multi(ide_drive_t *drive, unsigned int write) |
| 321 | { |
| 322 | unsigned int nsect; |
| 323 | |
| 324 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); |
| 325 | while (nsect--) |
| 326 | ide_pio_sector(drive, write); |
| 327 | } |
| 328 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 329 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | unsigned int write) |
| 331 | { |
| 332 | if (rq->bio) /* fs request */ |
| 333 | rq->errors = 0; |
| 334 | |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 335 | touch_softlockup_watchdog(); |
| 336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | switch (drive->hwif->data_phase) { |
| 338 | case TASKFILE_MULTI_IN: |
| 339 | case TASKFILE_MULTI_OUT: |
| 340 | ide_pio_multi(drive, write); |
| 341 | break; |
| 342 | default: |
| 343 | ide_pio_sector(drive, write); |
| 344 | break; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, |
| 349 | const char *s, u8 stat) |
| 350 | { |
| 351 | if (rq->bio) { |
| 352 | ide_hwif_t *hwif = drive->hwif; |
| 353 | int sectors = hwif->nsect - hwif->nleft; |
| 354 | |
| 355 | switch (hwif->data_phase) { |
| 356 | case TASKFILE_IN: |
| 357 | if (hwif->nleft) |
| 358 | break; |
| 359 | /* fall through */ |
| 360 | case TASKFILE_OUT: |
| 361 | sectors--; |
| 362 | break; |
| 363 | case TASKFILE_MULTI_IN: |
| 364 | if (hwif->nleft) |
| 365 | break; |
| 366 | /* fall through */ |
| 367 | case TASKFILE_MULTI_OUT: |
| 368 | sectors -= drive->mult_count; |
| 369 | default: |
| 370 | break; |
| 371 | } |
| 372 | |
| 373 | if (sectors > 0) { |
| 374 | ide_driver_t *drv; |
| 375 | |
| 376 | drv = *(ide_driver_t **)rq->rq_disk->private_data; |
| 377 | drv->end_request(drive, 1, sectors); |
| 378 | } |
| 379 | } |
| 380 | return ide_error(drive, s, stat); |
| 381 | } |
| 382 | |
| 383 | static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
| 384 | { |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 385 | HWIF(drive)->cursg = NULL; |
| 386 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 387 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | ide_task_t *task = rq->special; |
| 389 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 390 | if (task->tf_flags & IDE_TFLAG_FLAGGED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | u8 err = drive->hwif->INB(IDE_ERROR_REG); |
| 392 | ide_end_drive_cmd(drive, stat, err); |
| 393 | return; |
| 394 | } |
| 395 | } |
| 396 | |
Richard Purdie | 03731fb | 2006-03-31 02:31:15 -0800 | [diff] [blame] | 397 | if (rq->rq_disk) { |
| 398 | ide_driver_t *drv; |
| 399 | |
| 400 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; |
| 401 | drv->end_request(drive, 1, rq->hard_nr_sectors); |
| 402 | } else |
| 403 | ide_end_request(drive, 1, rq->hard_nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | /* |
| 407 | * Handler for command with PIO data-in phase (Read/Read Multiple). |
| 408 | */ |
| 409 | ide_startstop_t task_in_intr (ide_drive_t *drive) |
| 410 | { |
| 411 | ide_hwif_t *hwif = drive->hwif; |
| 412 | struct request *rq = HWGROUP(drive)->rq; |
| 413 | u8 stat = hwif->INB(IDE_STATUS_REG); |
| 414 | |
| 415 | /* new way for dealing with premature shared PCI interrupts */ |
| 416 | if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) { |
| 417 | if (stat & (ERR_STAT | DRQ_STAT)) |
| 418 | return task_error(drive, rq, __FUNCTION__, stat); |
| 419 | /* No data yet, so wait for another IRQ. */ |
| 420 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 421 | return ide_started; |
| 422 | } |
| 423 | |
| 424 | ide_pio_datablock(drive, rq, 0); |
| 425 | |
| 426 | /* If it was the last datablock check status and finish transfer. */ |
| 427 | if (!hwif->nleft) { |
| 428 | stat = wait_drive_not_busy(drive); |
| 429 | if (!OK_STAT(stat, 0, BAD_R_STAT)) |
| 430 | return task_error(drive, rq, __FUNCTION__, stat); |
| 431 | task_end_request(drive, rq, stat); |
| 432 | return ide_stopped; |
| 433 | } |
| 434 | |
| 435 | /* Still data left to transfer. */ |
| 436 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 437 | |
| 438 | return ide_started; |
| 439 | } |
| 440 | EXPORT_SYMBOL(task_in_intr); |
| 441 | |
| 442 | /* |
| 443 | * Handler for command with PIO data-out phase (Write/Write Multiple). |
| 444 | */ |
| 445 | static ide_startstop_t task_out_intr (ide_drive_t *drive) |
| 446 | { |
| 447 | ide_hwif_t *hwif = drive->hwif; |
| 448 | struct request *rq = HWGROUP(drive)->rq; |
| 449 | u8 stat = hwif->INB(IDE_STATUS_REG); |
| 450 | |
| 451 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) |
| 452 | return task_error(drive, rq, __FUNCTION__, stat); |
| 453 | |
| 454 | /* Deal with unexpected ATA data phase. */ |
| 455 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) |
| 456 | return task_error(drive, rq, __FUNCTION__, stat); |
| 457 | |
| 458 | if (!hwif->nleft) { |
| 459 | task_end_request(drive, rq, stat); |
| 460 | return ide_stopped; |
| 461 | } |
| 462 | |
| 463 | /* Still data left to transfer. */ |
| 464 | ide_pio_datablock(drive, rq, 1); |
| 465 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 466 | |
| 467 | return ide_started; |
| 468 | } |
| 469 | |
| 470 | ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq) |
| 471 | { |
| 472 | ide_startstop_t startstop; |
| 473 | |
| 474 | if (ide_wait_stat(&startstop, drive, DATA_READY, |
| 475 | drive->bad_wstat, WAIT_DRQ)) { |
| 476 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", |
| 477 | drive->name, |
| 478 | drive->hwif->data_phase ? "MULT" : "", |
| 479 | drive->addressing ? "_EXT" : ""); |
| 480 | return startstop; |
| 481 | } |
| 482 | |
| 483 | if (!drive->unmask) |
| 484 | local_irq_disable(); |
| 485 | |
| 486 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 487 | ide_pio_datablock(drive, rq, 1); |
| 488 | |
| 489 | return ide_started; |
| 490 | } |
| 491 | EXPORT_SYMBOL(pre_task_out_intr); |
| 492 | |
| 493 | static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf) |
| 494 | { |
| 495 | struct request rq; |
| 496 | |
| 497 | memset(&rq, 0, sizeof(rq)); |
Bartlomiej Zolnierkiewicz | 02ac246 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 498 | rq.ref_count = 1; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 499 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | rq.buffer = buf; |
| 501 | |
| 502 | /* |
| 503 | * (ks) We transfer currently only whole sectors. |
| 504 | * This is suffient for now. But, it would be great, |
| 505 | * if we would find a solution to transfer any size. |
| 506 | * To support special commands like READ LONG. |
| 507 | */ |
| 508 | if (args->command_type != IDE_DRIVE_TASK_NO_DATA) { |
| 509 | if (data_size == 0) |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 510 | rq.nr_sectors = (args->tf.hob_nsect << 8) | args->tf.nsect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | else |
| 512 | rq.nr_sectors = data_size / SECTOR_SIZE; |
| 513 | |
| 514 | if (!rq.nr_sectors) { |
| 515 | printk(KERN_ERR "%s: in/out command without data\n", |
| 516 | drive->name); |
| 517 | return -EFAULT; |
| 518 | } |
| 519 | |
| 520 | rq.hard_nr_sectors = rq.nr_sectors; |
| 521 | rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors; |
| 522 | |
| 523 | if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE) |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 524 | rq.cmd_flags |= REQ_RW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | rq.special = args; |
Timothy Thelin | ef0f6a43 | 2005-09-16 19:28:16 -0700 | [diff] [blame] | 528 | args->rq = &rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 530 | } |
| 531 | |
| 532 | int ide_raw_taskfile (ide_drive_t *drive, ide_task_t *args, u8 *buf) |
| 533 | { |
| 534 | return ide_diag_taskfile(drive, args, 0, buf); |
| 535 | } |
| 536 | |
| 537 | EXPORT_SYMBOL(ide_raw_taskfile); |
| 538 | |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 539 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
| 540 | { |
| 541 | task->command_type = IDE_DRIVE_TASK_NO_DATA; |
| 542 | task->data_phase = TASKFILE_NO_DATA; |
| 543 | task->handler = task_no_data_intr; |
| 544 | |
| 545 | return ide_raw_taskfile(drive, task, NULL); |
| 546 | } |
| 547 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); |
| 548 | |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 549 | #ifdef CONFIG_IDE_TASK_IOCTL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 551 | { |
| 552 | ide_task_request_t *req_task; |
| 553 | ide_task_t args; |
| 554 | u8 *outbuf = NULL; |
| 555 | u8 *inbuf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | int err = 0; |
| 557 | int tasksize = sizeof(struct ide_task_request_s); |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 558 | unsigned int taskin = 0; |
| 559 | unsigned int taskout = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | u8 io_32bit = drive->io_32bit; |
| 561 | char __user *buf = (char __user *)arg; |
| 562 | |
| 563 | // printk("IDE Taskfile ...\n"); |
| 564 | |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 565 | req_task = kzalloc(tasksize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | if (req_task == NULL) return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | if (copy_from_user(req_task, buf, tasksize)) { |
| 568 | kfree(req_task); |
| 569 | return -EFAULT; |
| 570 | } |
| 571 | |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 572 | taskout = req_task->out_size; |
| 573 | taskin = req_task->in_size; |
| 574 | |
| 575 | if (taskin > 65536 || taskout > 65536) { |
| 576 | err = -EINVAL; |
| 577 | goto abort; |
| 578 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
| 580 | if (taskout) { |
| 581 | int outtotal = tasksize; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 582 | outbuf = kzalloc(taskout, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | if (outbuf == NULL) { |
| 584 | err = -ENOMEM; |
| 585 | goto abort; |
| 586 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
| 588 | err = -EFAULT; |
| 589 | goto abort; |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | if (taskin) { |
| 594 | int intotal = tasksize + taskout; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 595 | inbuf = kzalloc(taskin, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | if (inbuf == NULL) { |
| 597 | err = -ENOMEM; |
| 598 | goto abort; |
| 599 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
| 601 | err = -EFAULT; |
| 602 | goto abort; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | memset(&args, 0, sizeof(ide_task_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 608 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 609 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | args.tf_in_flags = req_task->in_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | args.data_phase = req_task->data_phase; |
| 612 | args.command_type = req_task->req_cmd; |
| 613 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 614 | if (req_task->out_flags.all) { |
| 615 | args.tf_flags |= IDE_TFLAG_FLAGGED; |
| 616 | |
| 617 | if (req_task->out_flags.b.data) |
| 618 | args.tf_flags |= IDE_TFLAG_OUT_DATA; |
| 619 | |
| 620 | if (req_task->out_flags.b.nsector_hob) |
| 621 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
| 622 | if (req_task->out_flags.b.sector_hob) |
| 623 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
| 624 | if (req_task->out_flags.b.lcyl_hob) |
| 625 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
| 626 | if (req_task->out_flags.b.hcyl_hob) |
| 627 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
| 628 | |
| 629 | if (req_task->out_flags.b.error_feature) |
| 630 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
| 631 | if (req_task->out_flags.b.nsector) |
| 632 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; |
| 633 | if (req_task->out_flags.b.sector) |
| 634 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; |
| 635 | if (req_task->out_flags.b.lcyl) |
| 636 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; |
| 637 | if (req_task->out_flags.b.hcyl) |
| 638 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; |
| 639 | } |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | drive->io_32bit = 0; |
| 642 | switch(req_task->data_phase) { |
| 643 | case TASKFILE_OUT_DMAQ: |
| 644 | case TASKFILE_OUT_DMA: |
| 645 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); |
| 646 | break; |
| 647 | case TASKFILE_IN_DMAQ: |
| 648 | case TASKFILE_IN_DMA: |
| 649 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); |
| 650 | break; |
| 651 | case TASKFILE_MULTI_OUT: |
| 652 | if (!drive->mult_count) { |
| 653 | /* (hs): give up if multcount is not set */ |
| 654 | printk(KERN_ERR "%s: %s Multimode Write " \ |
| 655 | "multcount is not set\n", |
| 656 | drive->name, __FUNCTION__); |
| 657 | err = -EPERM; |
| 658 | goto abort; |
| 659 | } |
| 660 | /* fall through */ |
| 661 | case TASKFILE_OUT: |
| 662 | args.prehandler = &pre_task_out_intr; |
| 663 | args.handler = &task_out_intr; |
| 664 | err = ide_diag_taskfile(drive, &args, taskout, outbuf); |
| 665 | break; |
| 666 | case TASKFILE_MULTI_IN: |
| 667 | if (!drive->mult_count) { |
| 668 | /* (hs): give up if multcount is not set */ |
| 669 | printk(KERN_ERR "%s: %s Multimode Read failure " \ |
| 670 | "multcount is not set\n", |
| 671 | drive->name, __FUNCTION__); |
| 672 | err = -EPERM; |
| 673 | goto abort; |
| 674 | } |
| 675 | /* fall through */ |
| 676 | case TASKFILE_IN: |
| 677 | args.handler = &task_in_intr; |
| 678 | err = ide_diag_taskfile(drive, &args, taskin, inbuf); |
| 679 | break; |
| 680 | case TASKFILE_NO_DATA: |
| 681 | args.handler = &task_no_data_intr; |
| 682 | err = ide_diag_taskfile(drive, &args, 0, NULL); |
| 683 | break; |
| 684 | default: |
| 685 | err = -EFAULT; |
| 686 | goto abort; |
| 687 | } |
| 688 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 689 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 690 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | req_task->in_flags = args.tf_in_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
| 693 | if (copy_to_user(buf, req_task, tasksize)) { |
| 694 | err = -EFAULT; |
| 695 | goto abort; |
| 696 | } |
| 697 | if (taskout) { |
| 698 | int outtotal = tasksize; |
| 699 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { |
| 700 | err = -EFAULT; |
| 701 | goto abort; |
| 702 | } |
| 703 | } |
| 704 | if (taskin) { |
| 705 | int intotal = tasksize + taskout; |
| 706 | if (copy_to_user(buf + intotal, inbuf, taskin)) { |
| 707 | err = -EFAULT; |
| 708 | goto abort; |
| 709 | } |
| 710 | } |
| 711 | abort: |
| 712 | kfree(req_task); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 713 | kfree(outbuf); |
| 714 | kfree(inbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | |
| 716 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); |
| 717 | |
| 718 | drive->io_32bit = io_32bit; |
| 719 | |
| 720 | return err; |
| 721 | } |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 722 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
| 724 | int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) |
| 725 | { |
| 726 | struct request rq; |
| 727 | u8 buffer[4]; |
| 728 | |
| 729 | if (!buf) |
| 730 | buf = buffer; |
| 731 | memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors); |
| 732 | ide_init_drive_cmd(&rq); |
| 733 | rq.buffer = buf; |
| 734 | *buf++ = cmd; |
| 735 | *buf++ = nsect; |
| 736 | *buf++ = feature; |
| 737 | *buf++ = sectors; |
| 738 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 739 | } |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 742 | { |
| 743 | int err = 0; |
| 744 | u8 args[4], *argbuf = args; |
| 745 | u8 xfer_rate = 0; |
| 746 | int argsize = 4; |
| 747 | ide_task_t tfargs; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 748 | struct ide_taskfile *tf = &tfargs.tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
| 750 | if (NULL == (void *) arg) { |
| 751 | struct request rq; |
| 752 | ide_init_drive_cmd(&rq); |
| 753 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 754 | } |
| 755 | |
| 756 | if (copy_from_user(args, (void __user *)arg, 4)) |
| 757 | return -EFAULT; |
| 758 | |
| 759 | memset(&tfargs, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 760 | tf->feature = args[2]; |
| 761 | tf->nsect = args[3]; |
| 762 | tf->lbal = args[1]; |
| 763 | tf->command = args[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
| 765 | if (args[3]) { |
| 766 | argsize = 4 + (SECTOR_WORDS * 4 * args[3]); |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 767 | argbuf = kzalloc(argsize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | if (argbuf == NULL) |
| 769 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | } |
| 771 | if (set_transfer(drive, &tfargs)) { |
| 772 | xfer_rate = args[1]; |
| 773 | if (ide_ata66_check(drive, &tfargs)) |
| 774 | goto abort; |
| 775 | } |
| 776 | |
| 777 | err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf); |
| 778 | |
| 779 | if (!err && xfer_rate) { |
| 780 | /* active-retuning-calls future */ |
| 781 | ide_set_xfer_rate(drive, xfer_rate); |
| 782 | ide_driveid_update(drive); |
| 783 | } |
| 784 | abort: |
| 785 | if (copy_to_user((void __user *)arg, argbuf, argsize)) |
| 786 | err = -EFAULT; |
| 787 | if (argsize > 4) |
| 788 | kfree(argbuf); |
| 789 | return err; |
| 790 | } |
| 791 | |
| 792 | static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf) |
| 793 | { |
| 794 | struct request rq; |
| 795 | |
| 796 | ide_init_drive_cmd(&rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 797 | rq.cmd_type = REQ_TYPE_ATA_TASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | rq.buffer = buf; |
| 799 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 800 | } |
| 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 803 | { |
| 804 | void __user *p = (void __user *)arg; |
| 805 | int err = 0; |
| 806 | u8 args[7], *argbuf = args; |
| 807 | int argsize = 7; |
| 808 | |
| 809 | if (copy_from_user(args, p, 7)) |
| 810 | return -EFAULT; |
| 811 | err = ide_wait_cmd_task(drive, argbuf); |
| 812 | if (copy_to_user(p, argbuf, argsize)) |
| 813 | err = -EFAULT; |
| 814 | return err; |
| 815 | } |
| 816 | |
| 817 | /* |
| 818 | * NOTICE: This is additions from IBM to provide a discrete interface, |
| 819 | * for selective taskregister access operations. Nice JOB Klaus!!! |
| 820 | * Glad to be able to work and co-develop this with you and IBM. |
| 821 | */ |
| 822 | ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task) |
| 823 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | if (task->data_phase == TASKFILE_MULTI_IN || |
| 825 | task->data_phase == TASKFILE_MULTI_OUT) { |
| 826 | if (!drive->mult_count) { |
| 827 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); |
| 828 | return ide_stopped; |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | /* |
Bartlomiej Zolnierkiewicz | e07bc70 | 2005-11-19 22:17:55 +0100 | [diff] [blame] | 833 | * (ks) Check taskfile in flags. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | * If set, then execute as it is defined. |
| 835 | * If not set, then define default settings. |
| 836 | * The default values are: |
Bartlomiej Zolnierkiewicz | e07bc70 | 2005-11-19 22:17:55 +0100 | [diff] [blame] | 837 | * read all taskfile registers (except data) |
| 838 | * read the hob registers (sector, nsector, lcyl, hcyl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | if (task->tf_in_flags.all == 0) { |
| 841 | task->tf_in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; |
| 842 | if (drive->addressing == 1) |
| 843 | task->tf_in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
| 844 | } |
| 845 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame^] | 846 | return do_rw_taskfile(drive, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | } |