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/types.h> |
| 12 | #include <linux/string.h> |
| 13 | #include <linux/kernel.h> |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 14 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/delay.h> |
| 19 | #include <linux/hdreg.h> |
| 20 | #include <linux/ide.h> |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 21 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <asm/uaccess.h> |
| 24 | #include <asm/io.h> |
| 25 | |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 26 | void ide_tf_dump(const char *s, struct ide_taskfile *tf) |
| 27 | { |
| 28 | #ifdef DEBUG |
| 29 | printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x " |
| 30 | "lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n", |
| 31 | s, tf->feature, tf->nsect, tf->lbal, |
| 32 | tf->lbam, tf->lbah, tf->device, tf->command); |
| 33 | printk("%s: hob: nsect 0x%02x lbal 0x%02x " |
| 34 | "lbam 0x%02x lbah 0x%02x\n", |
| 35 | s, tf->hob_nsect, tf->hob_lbal, |
| 36 | tf->hob_lbam, tf->hob_lbah); |
| 37 | #endif |
| 38 | } |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) |
| 41 | { |
| 42 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 45 | args.tf.nsect = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | if (drive->media == ide_disk) |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 47 | args.tf.command = ATA_CMD_ID_ATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | else |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 49 | args.tf.command = ATA_CMD_ID_ATAPI; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 50 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 51 | args.data_phase = TASKFILE_IN; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 52 | return ide_raw_taskfile(drive, &args, buf, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | } |
| 54 | |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 55 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 56 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); |
| 57 | static ide_startstop_t task_in_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task) |
| 60 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 61 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 62 | struct ide_taskfile *tf = &task->tf; |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 63 | ide_handler_t *handler = NULL; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 64 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 65 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Bartlomiej Zolnierkiewicz | 1edee60 | 2008-01-25 22:17:15 +0100 | [diff] [blame] | 67 | if (task->data_phase == TASKFILE_MULTI_IN || |
| 68 | task->data_phase == TASKFILE_MULTI_OUT) { |
| 69 | if (!drive->mult_count) { |
| 70 | printk(KERN_ERR "%s: multimode not set!\n", |
| 71 | drive->name); |
| 72 | return ide_stopped; |
| 73 | } |
| 74 | } |
| 75 | |
Bartlomiej Zolnierkiewicz | 19710d2 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 76 | if (task->ftf_flags & IDE_FTFLAG_FLAGGED) |
| 77 | task->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; |
Bartlomiej Zolnierkiewicz | 1edee60 | 2008-01-25 22:17:15 +0100 | [diff] [blame] | 78 | |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 79 | memcpy(&hwif->task, task, sizeof(*task)); |
| 80 | |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 81 | if ((task->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
| 82 | ide_tf_dump(drive->name, tf); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 83 | tp_ops->set_irq(hwif, 1); |
Bartlomiej Zolnierkiewicz | ed4af48 | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 84 | SELECT_MASK(drive, 0); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 85 | tp_ops->tf_load(drive, task); |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 86 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 88 | switch (task->data_phase) { |
| 89 | case TASKFILE_MULTI_OUT: |
| 90 | case TASKFILE_OUT: |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 91 | tp_ops->exec_command(hwif, tf->command); |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 92 | ndelay(400); /* FIXME */ |
| 93 | return pre_task_out_intr(drive, task->rq); |
| 94 | case TASKFILE_MULTI_IN: |
| 95 | case TASKFILE_IN: |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 96 | handler = task_in_intr; |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 97 | /* fall-through */ |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 98 | case TASKFILE_NO_DATA: |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 99 | if (handler == NULL) |
| 100 | handler = task_no_data_intr; |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 101 | ide_execute_command(drive, tf->command, handler, |
| 102 | WAIT_WORSTCASE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | return ide_started; |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 104 | default: |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 105 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 || |
Bartlomiej Zolnierkiewicz | e6830a8 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 106 | ide_build_sglist(drive, hwif->rq) == 0 || |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 107 | dma_ops->dma_setup(drive)) |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 108 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 109 | dma_ops->dma_exec_cmd(drive, tf->command); |
| 110 | dma_ops->dma_start(drive); |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 111 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | } |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 114 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | /* |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 117 | * Handler for commands without a data phase |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | */ |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 119 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 121 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 122 | ide_task_t *task = &hwif->task; |
| 123 | struct ide_taskfile *tf = &task->tf; |
| 124 | int custom = (task->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; |
| 125 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | u8 stat; |
| 127 | |
Bartlomiej Zolnierkiewicz | 90d2c6b | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 128 | local_irq_enable_in_hardirq(); |
| 129 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 130 | while (1) { |
| 131 | stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 132 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 133 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | udelay(10); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 135 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 137 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
| 138 | if (custom && tf->command == ATA_CMD_SET_MULTI) { |
| 139 | drive->mult_req = drive->mult_count = 0; |
| 140 | drive->special.b.recalibrate = 1; |
| 141 | (void)ide_dump_status(drive, __func__, stat); |
| 142 | return ide_stopped; |
| 143 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { |
| 144 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { |
| 145 | ide_set_handler(drive, &task_no_data_intr, |
| 146 | WAIT_WORSTCASE, NULL); |
| 147 | return ide_started; |
| 148 | } |
| 149 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | return ide_error(drive, "task_no_data_intr", stat); |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 151 | } |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 152 | |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 153 | if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) { |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 154 | hwif->tp_ops->tf_read(drive, task); |
| 155 | if (tf->lbal != 0xc4) { |
| 156 | printk(KERN_ERR "%s: head unload failed!\n", |
| 157 | drive->name); |
| 158 | ide_tf_dump(drive->name, tf); |
| 159 | } else |
| 160 | drive->dev_flags |= IDE_DFLAG_PARKED; |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 161 | } else if (custom && tf->command == ATA_CMD_SET_MULTI) |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 162 | drive->mult_count = drive->mult_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 164 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) { |
| 165 | struct request *rq = hwif->rq; |
| 166 | u8 err = ide_read_error(drive); |
| 167 | |
| 168 | if (blk_pm_request(rq)) |
| 169 | ide_complete_pm_rq(drive, rq); |
| 170 | else { |
| 171 | if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) |
| 172 | ide_complete_task(drive, task, stat, err); |
| 173 | ide_complete_rq(drive, err); |
| 174 | } |
| 175 | } |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | return ide_stopped; |
| 178 | } |
| 179 | |
Adrian Bunk | da6f4c7 | 2008-02-01 23:09:16 +0100 | [diff] [blame] | 180 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 182 | ide_hwif_t *hwif = drive->hwif; |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 183 | int retries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | u8 stat; |
| 185 | |
| 186 | /* |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 187 | * Last sector was transfered, wait until device is ready. This can |
| 188 | * 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] | 189 | */ |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 190 | for (retries = 0; retries < 1000; retries++) { |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 191 | stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 192 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 193 | if (stat & ATA_BUSY) |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 194 | udelay(10); |
| 195 | else |
| 196 | break; |
| 197 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 199 | if (stat & ATA_BUSY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
| 201 | |
| 202 | return stat; |
| 203 | } |
| 204 | |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 205 | static void ide_pio_sector(ide_drive_t *drive, struct request *rq, |
| 206 | unsigned int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | { |
| 208 | ide_hwif_t *hwif = drive->hwif; |
| 209 | struct scatterlist *sg = hwif->sg_table; |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 210 | struct scatterlist *cursg = hwif->cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | struct page *page; |
| 212 | #ifdef CONFIG_HIGHMEM |
| 213 | unsigned long flags; |
| 214 | #endif |
| 215 | unsigned int offset; |
| 216 | u8 *buf; |
| 217 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 218 | cursg = hwif->cursg; |
| 219 | if (!cursg) { |
| 220 | cursg = sg; |
| 221 | hwif->cursg = sg; |
| 222 | } |
| 223 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 224 | page = sg_page(cursg); |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 225 | offset = cursg->offset + hwif->cursg_ofs * SECTOR_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | /* get the current page and offset */ |
| 228 | page = nth_page(page, (offset >> PAGE_SHIFT)); |
| 229 | offset %= PAGE_SIZE; |
| 230 | |
| 231 | #ifdef CONFIG_HIGHMEM |
| 232 | local_irq_save(flags); |
| 233 | #endif |
| 234 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; |
| 235 | |
| 236 | hwif->nleft--; |
| 237 | hwif->cursg_ofs++; |
| 238 | |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 239 | if ((hwif->cursg_ofs * SECTOR_SIZE) == cursg->length) { |
| 240 | hwif->cursg = sg_next(hwif->cursg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | hwif->cursg_ofs = 0; |
| 242 | } |
| 243 | |
| 244 | /* do the actual data transfer */ |
| 245 | if (write) |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 246 | hwif->tp_ops->output_data(drive, rq, buf, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | else |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 248 | hwif->tp_ops->input_data(drive, rq, buf, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); |
| 251 | #ifdef CONFIG_HIGHMEM |
| 252 | local_irq_restore(flags); |
| 253 | #endif |
| 254 | } |
| 255 | |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 256 | static void ide_pio_multi(ide_drive_t *drive, struct request *rq, |
| 257 | unsigned int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | { |
| 259 | unsigned int nsect; |
| 260 | |
| 261 | nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count); |
| 262 | while (nsect--) |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 263 | ide_pio_sector(drive, rq, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | } |
| 265 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 266 | static void ide_pio_datablock(ide_drive_t *drive, struct request *rq, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | unsigned int write) |
| 268 | { |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 269 | ide_task_t *task = &drive->hwif->task; |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 270 | u8 saved_io_32bit = drive->io_32bit; |
| 271 | |
Bartlomiej Zolnierkiewicz | b109f52 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 272 | if (blk_fs_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | rq->errors = 0; |
| 274 | |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 275 | if (task->tf_flags & IDE_TFLAG_IO_16BIT) |
| 276 | drive->io_32bit = 0; |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 277 | |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 278 | touch_softlockup_watchdog(); |
| 279 | |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 280 | switch (task->data_phase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | case TASKFILE_MULTI_IN: |
| 282 | case TASKFILE_MULTI_OUT: |
Bartlomiej Zolnierkiewicz | 92d3ab2 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 283 | ide_pio_multi(drive, rq, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | break; |
| 285 | default: |
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 | break; |
| 288 | } |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 289 | |
| 290 | drive->io_32bit = saved_io_32bit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq, |
| 294 | const char *s, u8 stat) |
| 295 | { |
Bartlomiej Zolnierkiewicz | b109f52 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 296 | if (blk_fs_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 298 | ide_task_t *task = &hwif->task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | int sectors = hwif->nsect - hwif->nleft; |
| 300 | |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 301 | switch (task->data_phase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | case TASKFILE_IN: |
| 303 | if (hwif->nleft) |
| 304 | break; |
| 305 | /* fall through */ |
| 306 | case TASKFILE_OUT: |
| 307 | sectors--; |
| 308 | break; |
| 309 | case TASKFILE_MULTI_IN: |
| 310 | if (hwif->nleft) |
| 311 | break; |
| 312 | /* fall through */ |
| 313 | case TASKFILE_MULTI_OUT: |
| 314 | sectors -= drive->mult_count; |
| 315 | default: |
| 316 | break; |
| 317 | } |
| 318 | |
Bartlomiej Zolnierkiewicz | c152cc1 | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 319 | if (sectors > 0) |
| 320 | ide_end_request(drive, 1, sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | return ide_error(drive, s, stat); |
| 323 | } |
| 324 | |
Tejun Heo | 4d7a984 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 325 | 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] | 326 | { |
Bartlomiej Zolnierkiewicz | b109f52 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 327 | if (blk_fs_request(rq) == 0) { |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 328 | ide_task_t *task = rq->special; |
Bartlomiej Zolnierkiewicz | 64a57fe | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 329 | u8 err = ide_read_error(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 331 | if (task) |
| 332 | ide_complete_task(drive, task, stat, err); |
| 333 | ide_complete_rq(drive, err); |
Tejun Heo | 4d7a984 | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 334 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Bartlomiej Zolnierkiewicz | c152cc1 | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 337 | ide_end_request(drive, 1, rq->nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | /* |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 341 | * We got an interrupt on a task_in case, but no errors and no DRQ. |
| 342 | * |
| 343 | * It might be a spurious irq (shared irq), but it might be a |
| 344 | * command that had no output. |
| 345 | */ |
| 346 | static ide_startstop_t task_in_unexpected(ide_drive_t *drive, struct request *rq, u8 stat) |
| 347 | { |
| 348 | /* Command all done? */ |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 349 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) { |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 350 | task_end_request(drive, rq, stat); |
| 351 | return ide_stopped; |
| 352 | } |
| 353 | |
| 354 | /* Assume it was a spurious irq */ |
| 355 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 356 | return ide_started; |
| 357 | } |
| 358 | |
| 359 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | * Handler for command with PIO data-in phase (Read/Read Multiple). |
| 361 | */ |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 362 | static ide_startstop_t task_in_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 365 | struct request *rq = hwif->rq; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 366 | u8 stat = hwif->tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 368 | /* Error? */ |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 369 | if (stat & ATA_ERR) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 370 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 371 | |
| 372 | /* Didn't want any data? Odd. */ |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 373 | if ((stat & ATA_DRQ) == 0) |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 374 | return task_in_unexpected(drive, rq, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
| 376 | ide_pio_datablock(drive, rq, 0); |
| 377 | |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 378 | /* Are we done? Check status and finish transfer. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | if (!hwif->nleft) { |
| 380 | stat = wait_drive_not_busy(drive); |
Bartlomiej Zolnierkiewicz | 73d7de0 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 381 | if (!OK_STAT(stat, 0, BAD_STAT)) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 382 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | task_end_request(drive, rq, stat); |
| 384 | return ide_stopped; |
| 385 | } |
| 386 | |
| 387 | /* Still data left to transfer. */ |
| 388 | ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL); |
| 389 | |
| 390 | return ide_started; |
| 391 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | /* |
| 394 | * Handler for command with PIO data-out phase (Write/Write Multiple). |
| 395 | */ |
| 396 | static ide_startstop_t task_out_intr (ide_drive_t *drive) |
| 397 | { |
| 398 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 399 | struct request *rq = hwif->rq; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 400 | u8 stat = hwif->tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
| 402 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 403 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | /* Deal with unexpected ATA data phase. */ |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 406 | if (((stat & ATA_DRQ) == 0) ^ !hwif->nleft) |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 407 | return task_error(drive, rq, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
| 409 | if (!hwif->nleft) { |
| 410 | task_end_request(drive, rq, stat); |
| 411 | return ide_stopped; |
| 412 | } |
| 413 | |
| 414 | /* Still data left to transfer. */ |
| 415 | ide_pio_datablock(drive, rq, 1); |
| 416 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 417 | |
| 418 | return ide_started; |
| 419 | } |
| 420 | |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 421 | 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] | 422 | { |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 423 | ide_task_t *task = &drive->hwif->task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | ide_startstop_t startstop; |
| 425 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 426 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | drive->bad_wstat, WAIT_DRQ)) { |
| 428 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", |
Bartlomiej Zolnierkiewicz | c7db966 | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 429 | drive->name, |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 430 | task->data_phase == TASKFILE_MULTI_OUT ? "MULT" : "", |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 431 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | return startstop; |
| 433 | } |
| 434 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 435 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | local_irq_disable(); |
| 437 | |
| 438 | ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL); |
| 439 | ide_pio_datablock(drive, rq, 1); |
| 440 | |
| 441 | return ide_started; |
| 442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 444 | 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] | 445 | { |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 446 | struct request *rq; |
| 447 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 449 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 450 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
| 451 | rq->buffer = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
| 453 | /* |
| 454 | * (ks) We transfer currently only whole sectors. |
| 455 | * This is suffient for now. But, it would be great, |
| 456 | * if we would find a solution to transfer any size. |
| 457 | * To support special commands like READ LONG. |
| 458 | */ |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 459 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
| 460 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 462 | if (task->tf_flags & IDE_TFLAG_WRITE) |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 463 | rq->cmd_flags |= REQ_RW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 465 | rq->special = task; |
| 466 | task->rq = rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 468 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 469 | blk_put_request(rq); |
| 470 | |
| 471 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | } |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | EXPORT_SYMBOL(ide_raw_taskfile); |
| 475 | |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 476 | int ide_no_data_taskfile(ide_drive_t *drive, ide_task_t *task) |
| 477 | { |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 478 | task->data_phase = TASKFILE_NO_DATA; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 479 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 480 | return ide_raw_taskfile(drive, task, NULL, 0); |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 481 | } |
| 482 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); |
| 483 | |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 484 | #ifdef CONFIG_IDE_TASK_IOCTL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
| 486 | { |
| 487 | ide_task_request_t *req_task; |
| 488 | ide_task_t args; |
| 489 | u8 *outbuf = NULL; |
| 490 | u8 *inbuf = NULL; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 491 | u8 *data_buf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | int err = 0; |
| 493 | int tasksize = sizeof(struct ide_task_request_s); |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 494 | unsigned int taskin = 0; |
| 495 | unsigned int taskout = 0; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 496 | u16 nsect = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | char __user *buf = (char __user *)arg; |
| 498 | |
| 499 | // printk("IDE Taskfile ...\n"); |
| 500 | |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 501 | req_task = kzalloc(tasksize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | if (req_task == NULL) return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | if (copy_from_user(req_task, buf, tasksize)) { |
| 504 | kfree(req_task); |
| 505 | return -EFAULT; |
| 506 | } |
| 507 | |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 508 | taskout = req_task->out_size; |
| 509 | taskin = req_task->in_size; |
| 510 | |
| 511 | if (taskin > 65536 || taskout > 65536) { |
| 512 | err = -EINVAL; |
| 513 | goto abort; |
| 514 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | if (taskout) { |
| 517 | int outtotal = tasksize; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 518 | outbuf = kzalloc(taskout, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | if (outbuf == NULL) { |
| 520 | err = -ENOMEM; |
| 521 | goto abort; |
| 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
| 524 | err = -EFAULT; |
| 525 | goto abort; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | if (taskin) { |
| 530 | int intotal = tasksize + taskout; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 531 | inbuf = kzalloc(taskin, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | if (inbuf == NULL) { |
| 533 | err = -ENOMEM; |
| 534 | goto abort; |
| 535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
| 537 | err = -EFAULT; |
| 538 | goto abort; |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | memset(&args, 0, sizeof(ide_task_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 544 | memcpy(&args.tf_array[0], req_task->hob_ports, HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 545 | 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] | 546 | |
| 547 | args.data_phase = req_task->data_phase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 549 | args.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
| 550 | IDE_TFLAG_IN_TF; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 551 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 552 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 553 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 554 | if (req_task->out_flags.all) { |
Bartlomiej Zolnierkiewicz | 19710d2 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 555 | args.ftf_flags |= IDE_FTFLAG_FLAGGED; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 556 | |
| 557 | if (req_task->out_flags.b.data) |
Bartlomiej Zolnierkiewicz | 19710d2 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 558 | args.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 559 | |
| 560 | if (req_task->out_flags.b.nsector_hob) |
| 561 | args.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
| 562 | if (req_task->out_flags.b.sector_hob) |
| 563 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
| 564 | if (req_task->out_flags.b.lcyl_hob) |
| 565 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
| 566 | if (req_task->out_flags.b.hcyl_hob) |
| 567 | args.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
| 568 | |
| 569 | if (req_task->out_flags.b.error_feature) |
| 570 | args.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
| 571 | if (req_task->out_flags.b.nsector) |
| 572 | args.tf_flags |= IDE_TFLAG_OUT_NSECT; |
| 573 | if (req_task->out_flags.b.sector) |
| 574 | args.tf_flags |= IDE_TFLAG_OUT_LBAL; |
| 575 | if (req_task->out_flags.b.lcyl) |
| 576 | args.tf_flags |= IDE_TFLAG_OUT_LBAM; |
| 577 | if (req_task->out_flags.b.hcyl) |
| 578 | args.tf_flags |= IDE_TFLAG_OUT_LBAH; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 579 | } else { |
| 580 | args.tf_flags |= IDE_TFLAG_OUT_TF; |
| 581 | if (args.tf_flags & IDE_TFLAG_LBA48) |
| 582 | args.tf_flags |= IDE_TFLAG_OUT_HOB; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 583 | } |
| 584 | |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 585 | if (req_task->in_flags.b.data) |
Bartlomiej Zolnierkiewicz | 19710d2 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 586 | args.ftf_flags |= IDE_FTFLAG_IN_DATA; |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | switch(req_task->data_phase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | case TASKFILE_MULTI_OUT: |
| 590 | if (!drive->mult_count) { |
| 591 | /* (hs): give up if multcount is not set */ |
| 592 | printk(KERN_ERR "%s: %s Multimode Write " \ |
| 593 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 594 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | err = -EPERM; |
| 596 | goto abort; |
| 597 | } |
| 598 | /* fall through */ |
| 599 | case TASKFILE_OUT: |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 600 | /* fall through */ |
| 601 | case TASKFILE_OUT_DMAQ: |
| 602 | case TASKFILE_OUT_DMA: |
| 603 | nsect = taskout / SECTOR_SIZE; |
| 604 | data_buf = outbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | break; |
| 606 | case TASKFILE_MULTI_IN: |
| 607 | if (!drive->mult_count) { |
| 608 | /* (hs): give up if multcount is not set */ |
| 609 | printk(KERN_ERR "%s: %s Multimode Read failure " \ |
| 610 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 611 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | err = -EPERM; |
| 613 | goto abort; |
| 614 | } |
| 615 | /* fall through */ |
| 616 | case TASKFILE_IN: |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 617 | /* fall through */ |
| 618 | case TASKFILE_IN_DMAQ: |
| 619 | case TASKFILE_IN_DMA: |
| 620 | nsect = taskin / SECTOR_SIZE; |
| 621 | data_buf = inbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | break; |
| 623 | case TASKFILE_NO_DATA: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | break; |
| 625 | default: |
| 626 | err = -EFAULT; |
| 627 | goto abort; |
| 628 | } |
| 629 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 630 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
| 631 | nsect = 0; |
| 632 | else if (!nsect) { |
| 633 | nsect = (args.tf.hob_nsect << 8) | args.tf.nsect; |
| 634 | |
| 635 | if (!nsect) { |
| 636 | printk(KERN_ERR "%s: in/out command without data\n", |
| 637 | drive->name); |
| 638 | err = -EFAULT; |
| 639 | goto abort; |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) |
| 644 | args.tf_flags |= IDE_TFLAG_WRITE; |
| 645 | |
| 646 | err = ide_raw_taskfile(drive, &args, data_buf, nsect); |
| 647 | |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 648 | memcpy(req_task->hob_ports, &args.tf_array[0], HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 649 | 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] | 650 | |
Bartlomiej Zolnierkiewicz | 19710d2 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 651 | if ((args.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 652 | req_task->in_flags.all == 0) { |
| 653 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 654 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 655 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
| 656 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | |
| 658 | if (copy_to_user(buf, req_task, tasksize)) { |
| 659 | err = -EFAULT; |
| 660 | goto abort; |
| 661 | } |
| 662 | if (taskout) { |
| 663 | int outtotal = tasksize; |
| 664 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { |
| 665 | err = -EFAULT; |
| 666 | goto abort; |
| 667 | } |
| 668 | } |
| 669 | if (taskin) { |
| 670 | int intotal = tasksize + taskout; |
| 671 | if (copy_to_user(buf + intotal, inbuf, taskin)) { |
| 672 | err = -EFAULT; |
| 673 | goto abort; |
| 674 | } |
| 675 | } |
| 676 | abort: |
| 677 | kfree(req_task); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 678 | kfree(outbuf); |
| 679 | kfree(inbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
| 681 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); |
| 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return err; |
| 684 | } |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 685 | #endif |