Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * Copyright (C) 2000-2002 Michael Cornwell <cornwell@acm.org> |
| 3 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> |
| 4 | * Copyright (C) 2001-2002 Klaus Smolin |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * IBM Storage Technology Division |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 6 | * Copyright (C) 2003-2004, 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * The big the bad and the ugly. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | */ |
| 10 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/module.h> |
| 12 | #include <linux/types.h> |
| 13 | #include <linux/string.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/timer.h> |
| 16 | #include <linux/mm.h> |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 17 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/major.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/genhd.h> |
| 22 | #include <linux/blkpg.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/hdreg.h> |
| 27 | #include <linux/ide.h> |
| 28 | #include <linux/bitops.h> |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 29 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
| 31 | #include <asm/byteorder.h> |
| 32 | #include <asm/irq.h> |
| 33 | #include <asm/uaccess.h> |
| 34 | #include <asm/io.h> |
| 35 | |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 36 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
| 37 | { |
| 38 | #ifdef DEBUG |
| 39 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " |
| 40 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", |
| 41 | s, tf->feature, tf->nsect, tf->lbal, |
| 42 | tf->lbam, tf->lbah, tf->device, tf->command); |
| 43 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
| 44 | "lbam 0x%02x lbah 0x%02x\n", |
| 45 | s, tf->hob_nsect, tf->hob_lbal, |
| 46 | tf->hob_lbam, tf->hob_lbah); |
| 47 | #endif |
| 48 | } |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
| 51 | { |
| 52 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 55 | args.tf.nsect = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | if (drive->media == ide_disk) |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 57 | args.tf.command = WIN_IDENTIFY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | else |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 59 | args.tf.command = WIN_PIDENTIFY; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 60 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 61 | args.data_phase = TASKFILE_IN; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 62 | return ide_raw_taskfile(drive, &args, buf, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 65 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 66 | static ide_startstop_t set_geometry_intr(ide_drive_t *); |
| 67 | static ide_startstop_t recal_intr(ide_drive_t *); |
| 68 | static ide_startstop_t set_multmode_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 69 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
| 70 | static ide_startstop_t task_in_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
| 73 | { |
| 74 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 75 | struct ide_taskfile *tf = &task->tf; |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 76 | ide_handler_t *handler = NULL; |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 77 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Bartlomiej Zolnierkiewicz | 1edee60 | 2008-01-25 22:17:15 +0100 | [diff] [blame] | 79 | if (task->data_phase == TASKFILE_MULTI_IN || |
| 80 | task->data_phase == TASKFILE_MULTI_OUT) { |
| 81 | if (!drive->mult_count) { |
| 82 | printk(KERN_ERR "%s: multimode not set!\n", |
| 83 | drive->name); |
| 84 | return ide_stopped; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | if (task->tf_flags & IDE_TFLAG_FLAGGED) |
| 89 | task->tf_flags |= IDE_TFLAG_FLAGGED_SET_IN_FLAGS; |
| 90 | |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 91 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
| 92 | ide_tf_dump(drive->name, tf); |
Bartlomiej Zolnierkiewicz | ed4af48 | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 93 | ide_set_irq(drive, 1); |
| 94 | SELECT_MASK(drive, 0); |
Bartlomiej Zolnierkiewicz | 94cd5b6 | 2008-04-28 23:44:40 +0200 | [diff] [blame] | 95 | hwif->tf_load(drive, task); |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 96 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 98 | switch (task->data_phase) { |
| 99 | case TASKFILE_MULTI_OUT: |
| 100 | case TASKFILE_OUT: |
Bartlomiej Zolnierkiewicz | f8c4bd0a | 2008-07-15 21:21:49 +0200 | [diff] [blame] | 101 | hwif->OUTBSYNC(hwif, tf->command, hwif->io_ports.command_addr); |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 102 | ndelay(400); /* FIXME */ |
| 103 | return pre_task_out_intr(drive, task->rq); |
| 104 | case TASKFILE_MULTI_IN: |
| 105 | case TASKFILE_IN: |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 106 | handler = task_in_intr; |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 107 | /* fall-through */ |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 108 | case TASKFILE_NO_DATA: |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 109 | if (handler == NULL) |
| 110 | handler = task_no_data_intr; |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 111 | /* WIN_{SPECIFY,RESTORE,SETMULT} use custom handlers */ |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 112 | if (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) { |
| 113 | switch (tf->command) { |
| 114 | case WIN_SPECIFY: handler = set_geometry_intr; break; |
| 115 | case WIN_RESTORE: handler = recal_intr; break; |
| 116 | case WIN_SETMULT: handler = set_multmode_intr; break; |
| 117 | } |
| 118 | } |
| 119 | ide_execute_command(drive, tf->command, handler, |
| 120 | WAIT_WORSTCASE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | return ide_started; |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 122 | default: |
Bartlomiej Zolnierkiewicz | 07fe69d | 2008-07-16 20:33:43 +0200 | [diff] [blame^] | 123 | if (drive->using_dma == 0 || dma_ops->dma_setup(drive)) |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 124 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 125 | dma_ops->dma_exec_cmd(drive, tf->command); |
| 126 | dma_ops->dma_start(drive); |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 127 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | } |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 130 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | /* |
| 133 | * set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd. |
| 134 | */ |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 135 | static ide_startstop_t set_multmode_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | { |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 137 | u8 stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 139 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | drive->mult_count = drive->mult_req; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 141 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | drive->mult_req = drive->mult_count = 0; |
| 143 | drive->special.b.recalibrate = 1; |
| 144 | (void) ide_dump_status(drive, "set_multmode", stat); |
| 145 | } |
| 146 | return ide_stopped; |
| 147 | } |
| 148 | |
| 149 | /* |
| 150 | * set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd. |
| 151 | */ |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 152 | static ide_startstop_t set_geometry_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | int retries = 5; |
| 155 | u8 stat; |
| 156 | |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 157 | while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | udelay(10); |
| 159 | |
| 160 | if (OK_STAT(stat, READY_STAT, BAD_STAT)) |
| 161 | return ide_stopped; |
| 162 | |
| 163 | if (stat & (ERR_STAT|DRQ_STAT)) |
| 164 | return ide_error(drive, "set_geometry_intr", stat); |
| 165 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 166 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL); |
| 168 | return ide_started; |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd. |
| 173 | */ |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 174 | static ide_startstop_t recal_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | { |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 176 | u8 stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 178 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | return ide_error(drive, "recal_intr", stat); |
| 180 | return ide_stopped; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Handler for commands without a data phase |
| 185 | */ |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 186 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | { |
| 188 | ide_task_t *args = HWGROUP(drive)->rq->special; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | u8 stat; |
| 190 | |
Ingo Molnar | 366c7f5 | 2006-07-03 00:25:25 -0700 | [diff] [blame] | 191 | local_irq_enable_in_hardirq(); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 192 | stat = ide_read_status(drive); |
| 193 | |
| 194 | if (!OK_STAT(stat, READY_STAT, BAD_STAT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | return ide_error(drive, "task_no_data_intr", stat); |
| 196 | /* calls ide_end_drive_cmd */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | if (args) |
Bartlomiej Zolnierkiewicz | 64a57fe | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 199 | ide_end_drive_cmd(drive, stat, ide_read_error(drive)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | return ide_stopped; |
| 202 | } |
| 203 | |
Adrian Bunk | da6f4c7 | 2008-02-01 23:09:16 +0100 | [diff] [blame] | 204 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 206 | int retries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | u8 stat; |
| 208 | |
| 209 | /* |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 210 | * Last sector was transfered, wait until device is ready. This can |
| 211 | * take up to 6 ms on some ATAPI devices, so we will wait max 10 ms. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | */ |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 213 | for (retries = 0; retries < 1000; retries++) { |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 214 | stat = ide_read_status(drive); |
| 215 | |
| 216 | if (stat & BUSY_STAT) |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 217 | udelay(10); |
| 218 | else |
| 219 | break; |
| 220 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 222 | if (stat & BUSY_STAT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
| 224 | |
| 225 | return stat; |
| 226 | } |
| 227 | |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 228 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
| 229 | unsigned int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | { |
| 231 | ide_hwif_t *hwif = drive->hwif; |
| 232 | struct scatterlist *sg = hwif->sg_table; |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 233 | struct scatterlist *cursg = hwif->cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | struct page *page; |
| 235 | #ifdef CONFIG_HIGHMEM |
| 236 | unsigned long flags; |
| 237 | #endif |
| 238 | unsigned int offset; |
| 239 | u8 *buf; |
| 240 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 241 | cursg = hwif->cursg; |
| 242 | if (!cursg) { |
| 243 | cursg = sg; |
| 244 | hwif->cursg = sg; |
| 245 | } |
| 246 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 247 | page = sg_page(cursg); |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 248 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | /* get the current page and offset */ |
| 251 | page = nth_page(page, (offset >> PAGE_SHIFT)); |
| 252 | offset %= PAGE_SIZE; |
| 253 | |
| 254 | #ifdef CONFIG_HIGHMEM |
| 255 | local_irq_save(flags); |
| 256 | #endif |
| 257 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; |
| 258 | |
| 259 | hwif->nleft--; |
| 260 | hwif->cursg_ofs++; |
| 261 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 262 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
| 263 | hwif->cursg = sg_next(hwif->cursg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | hwif->cursg_ofs = 0; |
| 265 | } |
| 266 | |
| 267 | /* do the actual data transfer */ |
| 268 | if (write) |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 269 | hwif->output_data(drive, rq, buf, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | else |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 271 | hwif->input_data(drive, rq, buf, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); |
| 274 | #ifdef CONFIG_HIGHMEM |
| 275 | local_irq_restore(flags); |
| 276 | #endif |
| 277 | } |
| 278 | |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 279 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
| 280 | unsigned int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | { |
| 282 | unsigned int nsect; |
| 283 | |
| 284 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); |
| 285 | while (nsect--) |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 286 | ide_pio_sector(drive, rq, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 289 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | unsigned int write) |
| 291 | { |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 292 | u8 saved_io_32bit = drive->io_32bit; |
| 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | if (rq->bio) /* fs request */ |
| 295 | rq->errors = 0; |
| 296 | |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 297 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
| 298 | ide_task_t *task = rq->special; |
| 299 | |
| 300 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) |
| 301 | drive->io_32bit = 0; |
| 302 | } |
| 303 | |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 304 | touch_softlockup_watchdog(); |
| 305 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | switch (drive->hwif->data_phase) { |
| 307 | case TASKFILE_MULTI_IN: |
| 308 | case TASKFILE_MULTI_OUT: |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 309 | ide_pio_multi(drive, rq, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | break; |
| 311 | default: |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 312 | ide_pio_sector(drive, rq, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | break; |
| 314 | } |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 315 | |
| 316 | drive->io_32bit = saved_io_32bit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, |
| 320 | const char *s, u8 stat) |
| 321 | { |
| 322 | if (rq->bio) { |
| 323 | ide_hwif_t *hwif = drive->hwif; |
| 324 | int sectors = hwif->nsect - hwif->nleft; |
| 325 | |
| 326 | switch (hwif->data_phase) { |
| 327 | case TASKFILE_IN: |
| 328 | if (hwif->nleft) |
| 329 | break; |
| 330 | /* fall through */ |
| 331 | case TASKFILE_OUT: |
| 332 | sectors--; |
| 333 | break; |
| 334 | case TASKFILE_MULTI_IN: |
| 335 | if (hwif->nleft) |
| 336 | break; |
| 337 | /* fall through */ |
| 338 | case TASKFILE_MULTI_OUT: |
| 339 | sectors -= drive->mult_count; |
| 340 | default: |
| 341 | break; |
| 342 | } |
| 343 | |
| 344 | if (sectors > 0) { |
| 345 | ide_driver_t *drv; |
| 346 | |
| 347 | drv = *(ide_driver_t **)rq->rq_disk->private_data; |
| 348 | drv->end_request(drive, 1, sectors); |
| 349 | } |
| 350 | } |
| 351 | return ide_error(drive, s, stat); |
| 352 | } |
| 353 | |
Tejun Heo | 4d7a984 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 354 | void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 356 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
Bartlomiej Zolnierkiewicz | 64a57fe | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 357 | u8 err = ide_read_error(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Tejun Heo | 4d7a984 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 359 | ide_end_drive_cmd(drive, stat, err); |
| 360 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Richard Purdie | 03731fb | 2006-03-31 02:31:15 -0800 | [diff] [blame] | 363 | if (rq->rq_disk) { |
| 364 | ide_driver_t *drv; |
| 365 | |
| 366 | drv = *(ide_driver_t **)rq->rq_disk->private_data;; |
Bartlomiej Zolnierkiewicz | 79f21b8 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 367 | drv->end_request(drive, 1, rq->nr_sectors); |
Richard Purdie | 03731fb | 2006-03-31 02:31:15 -0800 | [diff] [blame] | 368 | } else |
Bartlomiej Zolnierkiewicz | 79f21b8 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 369 | ide_end_request(drive, 1, rq->nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | |
| 372 | /* |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 373 | * We got an interrupt on a task_in case, but no errors and no DRQ. |
| 374 | * |
| 375 | * It might be a spurious irq (shared irq), but it might be a |
| 376 | * command that had no output. |
| 377 | */ |
| 378 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) |
| 379 | { |
| 380 | /* Command all done? */ |
| 381 | if (OK_STAT(stat, READY_STAT, BUSY_STAT)) { |
| 382 | task_end_request(drive, rq, stat); |
| 383 | return ide_stopped; |
| 384 | } |
| 385 | |
| 386 | /* Assume it was a spurious irq */ |
| 387 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 388 | return ide_started; |
| 389 | } |
| 390 | |
| 391 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | * Handler for command with PIO data-in phase (Read/Read Multiple). |
| 393 | */ |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 394 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | { |
| 396 | ide_hwif_t *hwif = drive->hwif; |
| 397 | struct request *rq = HWGROUP(drive)->rq; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 398 | u8 stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 400 | /* Error? */ |
| 401 | if (stat & ERR_STAT) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 402 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 403 | |
| 404 | /* Didn't want any data? Odd. */ |
| 405 | if (!(stat & DRQ_STAT)) |
| 406 | return task_in_unexpected(drive, rq, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
| 408 | ide_pio_datablock(drive, rq, 0); |
| 409 | |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 410 | /* Are we done? Check status and finish transfer. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | if (!hwif->nleft) { |
| 412 | stat = wait_drive_not_busy(drive); |
Bartlomiej Zolnierkiewicz | 73d7de0 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 413 | if (!OK_STAT(stat, 0, BAD_STAT)) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 414 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | task_end_request(drive, rq, stat); |
| 416 | return ide_stopped; |
| 417 | } |
| 418 | |
| 419 | /* Still data left to transfer. */ |
| 420 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 421 | |
| 422 | return ide_started; |
| 423 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
| 425 | /* |
| 426 | * Handler for command with PIO data-out phase (Write/Write Multiple). |
| 427 | */ |
| 428 | static ide_startstop_t task_out_intr (ide_drive_t *drive) |
| 429 | { |
| 430 | ide_hwif_t *hwif = drive->hwif; |
| 431 | struct request *rq = HWGROUP(drive)->rq; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 432 | u8 stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | |
| 434 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 435 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | |
| 437 | /* Deal with unexpected ATA data phase. */ |
| 438 | if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 439 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
| 441 | if (!hwif->nleft) { |
| 442 | task_end_request(drive, rq, stat); |
| 443 | return ide_stopped; |
| 444 | } |
| 445 | |
| 446 | /* Still data left to transfer. */ |
| 447 | ide_pio_datablock(drive, rq, 1); |
| 448 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 449 | |
| 450 | return ide_started; |
| 451 | } |
| 452 | |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 453 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | { |
| 455 | ide_startstop_t startstop; |
| 456 | |
Bartlomiej Zolnierkiewicz | 4906f3b | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 457 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | drive->bad_wstat, WAIT_DRQ)) { |
| 459 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", |
| 460 | drive->name, |
| 461 | drive->hwif->data_phase ? "MULT" : "", |
| 462 | drive->addressing ? "_EXT" : ""); |
| 463 | return startstop; |
| 464 | } |
| 465 | |
| 466 | if (!drive->unmask) |
| 467 | local_irq_disable(); |
| 468 | |
| 469 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 470 | ide_pio_datablock(drive, rq, 1); |
| 471 | |
| 472 | return ide_started; |
| 473 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 475 | int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *task, u8 *buf, u16 nsect) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 477 | struct request *rq; |
| 478 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 480 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 481 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
| 482 | rq->buffer = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
| 484 | /* |
| 485 | * (ks) We transfer currently only whole sectors. |
| 486 | * This is suffient for now. But, it would be great, |
| 487 | * if we would find a solution to transfer any size. |
| 488 | * To support special commands like READ LONG. |
| 489 | */ |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 490 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
| 491 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 493 | if (task->tf_flags & IDE_TFLAG_WRITE) |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 494 | rq->cmd_flags |= REQ_RW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 496 | rq->special = task; |
| 497 | task->rq = rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 499 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 500 | blk_put_request(rq); |
| 501 | |
| 502 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } |
| 504 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | EXPORT_SYMBOL(ide_raw_taskfile); |
| 506 | |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 507 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
| 508 | { |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 509 | task->data_phase = TASKFILE_NO_DATA; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 510 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 511 | return ide_raw_taskfile(drive, task, NULL, 0); |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 512 | } |
| 513 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); |
| 514 | |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 515 | #ifdef CONFIG_IDE_TASK_IOCTL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 517 | { |
| 518 | ide_task_request_t *req_task; |
| 519 | ide_task_t args; |
| 520 | u8 *outbuf = NULL; |
| 521 | u8 *inbuf = NULL; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 522 | u8 *data_buf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | int err = 0; |
| 524 | int tasksize = sizeof(struct ide_task_request_s); |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 525 | unsigned int taskin = 0; |
| 526 | unsigned int taskout = 0; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 527 | u16 nsect = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | char __user *buf = (char __user *)arg; |
| 529 | |
| 530 | // printk("IDE Taskfile ...\n"); |
| 531 | |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 532 | req_task = kzalloc(tasksize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | if (req_task == NULL) return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | if (copy_from_user(req_task, buf, tasksize)) { |
| 535 | kfree(req_task); |
| 536 | return -EFAULT; |
| 537 | } |
| 538 | |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 539 | taskout = req_task->out_size; |
| 540 | taskin = req_task->in_size; |
| 541 | |
| 542 | if (taskin > 65536 || taskout > 65536) { |
| 543 | err = -EINVAL; |
| 544 | goto abort; |
| 545 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | if (taskout) { |
| 548 | int outtotal = tasksize; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 549 | outbuf = kzalloc(taskout, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | if (outbuf == NULL) { |
| 551 | err = -ENOMEM; |
| 552 | goto abort; |
| 553 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
| 555 | err = -EFAULT; |
| 556 | goto abort; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | if (taskin) { |
| 561 | int intotal = tasksize + taskout; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 562 | inbuf = kzalloc(taskin, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | if (inbuf == NULL) { |
| 564 | err = -ENOMEM; |
| 565 | goto abort; |
| 566 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
| 568 | err = -EFAULT; |
| 569 | goto abort; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | memset(&args, 0, sizeof(ide_task_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 575 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 576 | memcpy(&args.tf_array[6], req_task->io_ports, HDIO_DRIVE_TASK_HDR_SIZE); |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 577 | |
| 578 | args.data_phase = req_task->data_phase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 580 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
| 581 | IDE_TFLAG_IN_TF; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 582 | if (drive->addressing == 1) |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 583 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 584 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 585 | if (req_task->out_flags.all) { |
| 586 | args.tf_flags |= IDE_TFLAG_FLAGGED; |
| 587 | |
| 588 | if (req_task->out_flags.b.data) |
| 589 | args.tf_flags |= IDE_TFLAG_OUT_DATA; |
| 590 | |
| 591 | if (req_task->out_flags.b.nsector_hob) |
| 592 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
| 593 | if (req_task->out_flags.b.sector_hob) |
| 594 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
| 595 | if (req_task->out_flags.b.lcyl_hob) |
| 596 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
| 597 | if (req_task->out_flags.b.hcyl_hob) |
| 598 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
| 599 | |
| 600 | if (req_task->out_flags.b.error_feature) |
| 601 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
| 602 | if (req_task->out_flags.b.nsector) |
| 603 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; |
| 604 | if (req_task->out_flags.b.sector) |
| 605 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; |
| 606 | if (req_task->out_flags.b.lcyl) |
| 607 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; |
| 608 | if (req_task->out_flags.b.hcyl) |
| 609 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 610 | } else { |
| 611 | args.tf_flags |= IDE_TFLAG_OUT_TF; |
| 612 | if (args.tf_flags & IDE_TFLAG_LBA48) |
| 613 | args.tf_flags |= IDE_TFLAG_OUT_HOB; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 614 | } |
| 615 | |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 616 | if (req_task->in_flags.b.data) |
| 617 | args.tf_flags |= IDE_TFLAG_IN_DATA; |
| 618 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | switch(req_task->data_phase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | case TASKFILE_MULTI_OUT: |
| 621 | if (!drive->mult_count) { |
| 622 | /* (hs): give up if multcount is not set */ |
| 623 | printk(KERN_ERR "%s: %s Multimode Write " \ |
| 624 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 625 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | err = -EPERM; |
| 627 | goto abort; |
| 628 | } |
| 629 | /* fall through */ |
| 630 | case TASKFILE_OUT: |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 631 | /* fall through */ |
| 632 | case TASKFILE_OUT_DMAQ: |
| 633 | case TASKFILE_OUT_DMA: |
| 634 | nsect = taskout / SECTOR_SIZE; |
| 635 | data_buf = outbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | break; |
| 637 | case TASKFILE_MULTI_IN: |
| 638 | if (!drive->mult_count) { |
| 639 | /* (hs): give up if multcount is not set */ |
| 640 | printk(KERN_ERR "%s: %s Multimode Read failure " \ |
| 641 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 642 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | err = -EPERM; |
| 644 | goto abort; |
| 645 | } |
| 646 | /* fall through */ |
| 647 | case TASKFILE_IN: |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 648 | /* fall through */ |
| 649 | case TASKFILE_IN_DMAQ: |
| 650 | case TASKFILE_IN_DMA: |
| 651 | nsect = taskin / SECTOR_SIZE; |
| 652 | data_buf = inbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | break; |
| 654 | case TASKFILE_NO_DATA: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | break; |
| 656 | default: |
| 657 | err = -EFAULT; |
| 658 | goto abort; |
| 659 | } |
| 660 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 661 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
| 662 | nsect = 0; |
| 663 | else if (!nsect) { |
| 664 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; |
| 665 | |
| 666 | if (!nsect) { |
| 667 | printk(KERN_ERR "%s: in/out command without data\n", |
| 668 | drive->name); |
| 669 | err = -EFAULT; |
| 670 | goto abort; |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) |
| 675 | args.tf_flags |= IDE_TFLAG_WRITE; |
| 676 | |
| 677 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); |
| 678 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 679 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 680 | memcpy(req_task->io_ports, &args.tf_array[6], HDIO_DRIVE_TASK_HDR_SIZE); |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 681 | |
| 682 | if ((args.tf_flags & IDE_TFLAG_FLAGGED_SET_IN_FLAGS) && |
| 683 | req_task->in_flags.all == 0) { |
| 684 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; |
| 685 | if (drive->addressing == 1) |
| 686 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
| 687 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
| 689 | if (copy_to_user(buf, req_task, tasksize)) { |
| 690 | err = -EFAULT; |
| 691 | goto abort; |
| 692 | } |
| 693 | if (taskout) { |
| 694 | int outtotal = tasksize; |
| 695 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { |
| 696 | err = -EFAULT; |
| 697 | goto abort; |
| 698 | } |
| 699 | } |
| 700 | if (taskin) { |
| 701 | int intotal = tasksize + taskout; |
| 702 | if (copy_to_user(buf + intotal, inbuf, taskin)) { |
| 703 | err = -EFAULT; |
| 704 | goto abort; |
| 705 | } |
| 706 | } |
| 707 | abort: |
| 708 | kfree(req_task); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 709 | kfree(outbuf); |
| 710 | kfree(inbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | |
| 712 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); |
| 713 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | return err; |
| 715 | } |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 716 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 719 | { |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 720 | u8 *buf = NULL; |
| 721 | int bufsize = 0, err = 0; |
| 722 | u8 args[4], xfer_rate = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | ide_task_t tfargs; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 724 | struct ide_taskfile *tf = &tfargs.tf; |
Bartlomiej Zolnierkiewicz | 5efe7c5 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 725 | struct hd_driveid *id = drive->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
| 727 | if (NULL == (void *) arg) { |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 728 | struct request *rq; |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 729 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 730 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 731 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
| 732 | err = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 733 | blk_put_request(rq); |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 734 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 735 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
| 737 | |
| 738 | if (copy_from_user(args, (void __user *)arg, 4)) |
| 739 | return -EFAULT; |
| 740 | |
| 741 | memset(&tfargs, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 742 | tf->feature = args[2]; |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 743 | if (args[0] == WIN_SMART) { |
| 744 | tf->nsect = args[3]; |
| 745 | tf->lbal = args[1]; |
| 746 | tf->lbam = 0x4f; |
| 747 | tf->lbah = 0xc2; |
| 748 | tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT; |
| 749 | } else { |
| 750 | tf->nsect = args[1]; |
| 751 | tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE | |
| 752 | IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT; |
| 753 | } |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 754 | tf->command = args[0]; |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 755 | tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
| 757 | if (args[3]) { |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 758 | tfargs.tf_flags |= IDE_TFLAG_IO_16BIT; |
| 759 | bufsize = SECTOR_WORDS * 4 * args[3]; |
| 760 | buf = kzalloc(bufsize, GFP_KERNEL); |
| 761 | if (buf == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | } |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 764 | |
Bartlomiej Zolnierkiewicz | 5efe7c5 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 765 | if (tf->command == WIN_SETFEATURES && |
| 766 | tf->feature == SETFEATURES_XFER && |
| 767 | tf->nsect >= XFER_SW_DMA_0 && |
| 768 | (id->dma_ultra || id->dma_mword || id->dma_1word)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | xfer_rate = args[1]; |
Bartlomiej Zolnierkiewicz | af10f77 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 770 | if (tf->nsect > XFER_UDMA_2 && !eighty_ninty_three(drive)) { |
| 771 | printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot " |
| 772 | "be set\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | goto abort; |
Bartlomiej Zolnierkiewicz | af10f77 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 774 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 777 | err = ide_raw_taskfile(drive, &tfargs, buf, args[3]); |
| 778 | |
| 779 | args[0] = tf->status; |
| 780 | args[1] = tf->error; |
| 781 | args[2] = tf->nsect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
| 783 | if (!err && xfer_rate) { |
| 784 | /* active-retuning-calls future */ |
| 785 | ide_set_xfer_rate(drive, xfer_rate); |
| 786 | ide_driveid_update(drive); |
| 787 | } |
| 788 | abort: |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 789 | if (copy_to_user((void __user *)arg, &args, 4)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | err = -EFAULT; |
Bartlomiej Zolnierkiewicz | 5a9e77a | 2008-01-26 20:13:13 +0100 | [diff] [blame] | 791 | if (buf) { |
| 792 | if (copy_to_user((void __user *)(arg + 4), buf, bufsize)) |
| 793 | err = -EFAULT; |
| 794 | kfree(buf); |
| 795 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | return err; |
| 797 | } |
| 798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 800 | { |
| 801 | void __user *p = (void __user *)arg; |
| 802 | int err = 0; |
Bartlomiej Zolnierkiewicz | 14b89ef | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 803 | u8 args[7]; |
| 804 | ide_task_t task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
| 806 | if (copy_from_user(args, p, 7)) |
| 807 | return -EFAULT; |
Bartlomiej Zolnierkiewicz | 14b89ef | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 808 | |
| 809 | memset(&task, 0, sizeof(task)); |
| 810 | memcpy(&task.tf_array[7], &args[1], 6); |
| 811 | task.tf.command = args[0]; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 812 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 14b89ef | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 813 | |
| 814 | err = ide_no_data_taskfile(drive, &task); |
| 815 | |
| 816 | args[0] = task.tf.command; |
| 817 | memcpy(&args[1], &task.tf_array[7], 6); |
| 818 | |
| 819 | if (copy_to_user(p, args, 7)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | err = -EFAULT; |
Bartlomiej Zolnierkiewicz | 14b89ef | 2008-01-25 22:17:11 +0100 | [diff] [blame] | 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | return err; |
| 823 | } |