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 | { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 42 | struct ide_cmd cmd; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 43 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 44 | memset(&cmd, 0, sizeof(cmd)); |
| 45 | cmd.tf.nsect = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | if (drive->media == ide_disk) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 47 | cmd.tf.command = ATA_CMD_ID_ATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | else |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 49 | cmd.tf.command = ATA_CMD_ID_ATAPI; |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 50 | cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
| 51 | cmd.protocol = ATA_PROT_PIO; |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 52 | |
| 53 | return ide_raw_taskfile(drive, &cmd, buf, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
| 55 | |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 56 | static ide_startstop_t task_no_data_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 57 | static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *); |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 58 | static ide_startstop_t task_pio_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 59 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 60 | ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 62 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 63 | struct ide_cmd *cmd = &hwif->cmd; |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 64 | struct ide_taskfile *tf = &cmd->tf; |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 65 | ide_handler_t *handler = NULL; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 66 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | f37afda | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 67 | const struct ide_dma_ops *dma_ops = hwif->dma_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 69 | if (orig_cmd->protocol == ATA_PROT_PIO && |
| 70 | (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) && |
| 71 | drive->mult_count == 0) { |
| 72 | printk(KERN_ERR "%s: multimode not set!\n", drive->name); |
| 73 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 1edee60 | 2008-01-25 22:17:15 +0100 | [diff] [blame] | 74 | } |
| 75 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 76 | if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED) |
| 77 | orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS; |
Bartlomiej Zolnierkiewicz | 1edee60 | 2008-01-25 22:17:15 +0100 | [diff] [blame] | 78 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 79 | memcpy(cmd, orig_cmd, sizeof(*cmd)); |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 80 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 81 | if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) { |
Bartlomiej Zolnierkiewicz | 089c5c7 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 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 | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 85 | tp_ops->tf_load(drive, cmd); |
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 | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 88 | switch (cmd->protocol) { |
| 89 | case ATA_PROT_PIO: |
| 90 | if (cmd->tf_flags & IDE_TFLAG_WRITE) { |
| 91 | tp_ops->exec_command(hwif, tf->command); |
| 92 | ndelay(400); /* FIXME */ |
| 93 | return pre_task_out_intr(drive, cmd); |
| 94 | } |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 95 | handler = task_pio_intr; |
Bartlomiej Zolnierkiewicz | 1192e52 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 96 | /* fall-through */ |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 97 | case ATA_PROT_NODATA: |
Bartlomiej Zolnierkiewicz | 57d7366 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 98 | if (handler == NULL) |
| 99 | handler = task_no_data_intr; |
Bartlomiej Zolnierkiewicz | 35b5d0b | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 100 | ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | return ide_started; |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 102 | case ATA_PROT_DMA: |
Bartlomiej Zolnierkiewicz | 5ae5412 | 2009-03-31 20:15:20 +0200 | [diff] [blame^] | 103 | if (ide_dma_prepare(drive, cmd)) |
Bartlomiej Zolnierkiewicz | 10d9015 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 104 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 22117d6 | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 105 | hwif->expiry = dma_ops->dma_timer_expiry; |
Bartlomiej Zolnierkiewicz | 35b5d0b | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 106 | ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD); |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 107 | dma_ops->dma_start(drive); |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 108 | default: |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 109 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | } |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 112 | EXPORT_SYMBOL_GPL(do_rw_taskfile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 114 | static ide_startstop_t task_no_data_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 116 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 117 | struct ide_cmd *cmd = &hwif->cmd; |
| 118 | struct ide_taskfile *tf = &cmd->tf; |
| 119 | int custom = (cmd->tf_flags & IDE_TFLAG_CUSTOM_HANDLER) ? 1 : 0; |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 120 | int retries = (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) ? 5 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | u8 stat; |
| 122 | |
Bartlomiej Zolnierkiewicz | 90d2c6b | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 123 | local_irq_enable_in_hardirq(); |
| 124 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 125 | while (1) { |
| 126 | stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 127 | if ((stat & ATA_BUSY) == 0 || retries-- == 0) |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 128 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | udelay(10); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 130 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 132 | if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) { |
| 133 | if (custom && tf->command == ATA_CMD_SET_MULTI) { |
| 134 | drive->mult_req = drive->mult_count = 0; |
| 135 | drive->special.b.recalibrate = 1; |
| 136 | (void)ide_dump_status(drive, __func__, stat); |
| 137 | return ide_stopped; |
| 138 | } else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) { |
| 139 | if ((stat & (ATA_ERR | ATA_DRQ)) == 0) { |
| 140 | ide_set_handler(drive, &task_no_data_intr, |
Bartlomiej Zolnierkiewicz | 60c0cd0 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 141 | WAIT_WORSTCASE); |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 142 | return ide_started; |
| 143 | } |
| 144 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | return ide_error(drive, "task_no_data_intr", stat); |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 146 | } |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 147 | |
Bartlomiej Zolnierkiewicz | e7fedc3 | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 148 | if (custom && tf->command == ATA_CMD_SET_MULTI) |
Bartlomiej Zolnierkiewicz | d6ff9f6 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 149 | drive->mult_count = drive->mult_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
Bartlomiej Zolnierkiewicz | d364c7f | 2009-03-27 12:46:42 +0100 | [diff] [blame] | 151 | if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE || |
| 152 | tf->command == ATA_CMD_CHK_POWER) { |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 153 | struct request *rq = hwif->rq; |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 154 | |
| 155 | if (blk_pm_request(rq)) |
| 156 | ide_complete_pm_rq(drive, rq); |
Bartlomiej Zolnierkiewicz | 2230d90d | 2009-03-27 12:46:42 +0100 | [diff] [blame] | 157 | else |
| 158 | ide_finish_cmd(drive, cmd, stat); |
Bartlomiej Zolnierkiewicz | a09485d | 2009-03-27 12:46:31 +0100 | [diff] [blame] | 159 | } |
| 160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | return ide_stopped; |
| 162 | } |
| 163 | |
Adrian Bunk | da6f4c7 | 2008-02-01 23:09:16 +0100 | [diff] [blame] | 164 | static u8 wait_drive_not_busy(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 166 | ide_hwif_t *hwif = drive->hwif; |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 167 | int retries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | u8 stat; |
| 169 | |
| 170 | /* |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 171 | * Last sector was transfered, wait until device is ready. This can |
| 172 | * 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] | 173 | */ |
Bartlomiej Zolnierkiewicz | f54feaf | 2008-06-20 20:53:33 +0200 | [diff] [blame] | 174 | for (retries = 0; retries < 1000; retries++) { |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 175 | stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 176 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 177 | if (stat & ATA_BUSY) |
Masatake YAMATO | b42fa13 | 2007-07-03 22:28:34 +0200 | [diff] [blame] | 178 | udelay(10); |
| 179 | else |
| 180 | break; |
| 181 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 183 | if (stat & ATA_BUSY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | printk(KERN_ERR "%s: drive still BUSY!\n", drive->name); |
| 185 | |
| 186 | return stat; |
| 187 | } |
| 188 | |
Bartlomiej Zolnierkiewicz | a08915b | 2009-03-31 20:15:13 +0200 | [diff] [blame] | 189 | void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, |
| 190 | unsigned int write, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | { |
| 192 | ide_hwif_t *hwif = drive->hwif; |
| 193 | struct scatterlist *sg = hwif->sg_table; |
Bartlomiej Zolnierkiewicz | b6308ee | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 194 | struct scatterlist *cursg = cmd->cursg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | unsigned int offset; |
| 198 | u8 *buf; |
| 199 | |
Bartlomiej Zolnierkiewicz | b6308ee | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 200 | cursg = cmd->cursg; |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 201 | if (cursg == NULL) |
| 202 | cursg = cmd->cursg = sg; |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 203 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 204 | while (len) { |
| 205 | unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 207 | if (nr_bytes > PAGE_SIZE) |
| 208 | nr_bytes = PAGE_SIZE; |
| 209 | |
| 210 | page = sg_page(cursg); |
| 211 | offset = cursg->offset + cmd->cursg_ofs; |
| 212 | |
| 213 | /* get the current page and offset */ |
| 214 | page = nth_page(page, (offset >> PAGE_SHIFT)); |
| 215 | offset %= PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Bartlomiej Zolnierkiewicz | f2bc316 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 217 | if (PageHighMem(page)) |
| 218 | local_irq_save(flags); |
| 219 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 220 | buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 222 | cmd->nleft -= nr_bytes; |
| 223 | cmd->cursg_ofs += nr_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 225 | if (cmd->cursg_ofs == cursg->length) { |
| 226 | cursg = cmd->cursg = sg_next(cmd->cursg); |
| 227 | cmd->cursg_ofs = 0; |
| 228 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 230 | /* do the actual data transfer */ |
| 231 | if (write) |
| 232 | hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes); |
| 233 | else |
| 234 | hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 236 | kunmap_atomic(buf, KM_BIO_SRC_IRQ); |
Bartlomiej Zolnierkiewicz | f2bc316 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 237 | |
| 238 | if (PageHighMem(page)) |
| 239 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 241 | len -= nr_bytes; |
| 242 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
Bartlomiej Zolnierkiewicz | a08915b | 2009-03-31 20:15:13 +0200 | [diff] [blame] | 244 | EXPORT_SYMBOL_GPL(ide_pio_bytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 246 | static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, |
| 247 | unsigned int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | { |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 249 | unsigned int nr_bytes; |
| 250 | |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 251 | u8 saved_io_32bit = drive->io_32bit; |
| 252 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 253 | if (cmd->tf_flags & IDE_TFLAG_FS) |
| 254 | cmd->rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 256 | if (cmd->tf_flags & IDE_TFLAG_IO_16BIT) |
Bartlomiej Zolnierkiewicz | e3d9a73 | 2009-03-27 12:46:32 +0100 | [diff] [blame] | 257 | drive->io_32bit = 0; |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 258 | |
Andrew Morton | 651c29a | 2006-02-15 15:17:37 -0800 | [diff] [blame] | 259 | touch_softlockup_watchdog(); |
| 260 | |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 261 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 262 | nr_bytes = min_t(unsigned, cmd->nleft, drive->mult_count << 9); |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 263 | else |
Bartlomiej Zolnierkiewicz | 7a00798 | 2009-03-31 20:14:59 +0200 | [diff] [blame] | 264 | nr_bytes = SECTOR_SIZE; |
| 265 | |
| 266 | ide_pio_bytes(drive, cmd, write, nr_bytes); |
Tejun Heo | 35cf2b9 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 267 | |
| 268 | drive->io_32bit = saved_io_32bit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
Bartlomiej Zolnierkiewicz | 041cea1 | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 271 | static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | { |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 273 | if (cmd->tf_flags & IDE_TFLAG_FS) { |
Bartlomiej Zolnierkiewicz | bf717c0 | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 274 | int nr_bytes = cmd->nbytes - cmd->nleft; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 276 | if (cmd->protocol == ATA_PROT_PIO && |
| 277 | ((cmd->tf_flags & IDE_TFLAG_WRITE) || cmd->nleft == 0)) { |
| 278 | if (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) |
Bartlomiej Zolnierkiewicz | bf717c0 | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 279 | nr_bytes -= drive->mult_count << 9; |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 280 | else |
Bartlomiej Zolnierkiewicz | bf717c0 | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 281 | nr_bytes -= SECTOR_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Bartlomiej Zolnierkiewicz | bf717c0 | 2009-03-27 12:46:47 +0100 | [diff] [blame] | 284 | if (nr_bytes > 0) |
| 285 | ide_complete_rq(drive, 0, nr_bytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 289 | void ide_finish_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | { |
Bartlomiej Zolnierkiewicz | 6902a53 | 2009-03-27 12:46:43 +0100 | [diff] [blame] | 291 | struct request *rq = drive->hwif->rq; |
Bartlomiej Zolnierkiewicz | 2230d90d | 2009-03-27 12:46:42 +0100 | [diff] [blame] | 292 | u8 err = ide_read_error(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Bartlomiej Zolnierkiewicz | 2230d90d | 2009-03-27 12:46:42 +0100 | [diff] [blame] | 294 | ide_complete_cmd(drive, cmd, stat, err); |
Bartlomiej Zolnierkiewicz | 6902a53 | 2009-03-27 12:46:43 +0100 | [diff] [blame] | 295 | rq->errors = err; |
Bartlomiej Zolnierkiewicz | f974b19 | 2009-03-27 12:46:44 +0100 | [diff] [blame] | 296 | ide_complete_rq(drive, err ? -EIO : 0, blk_rq_bytes(rq)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | /* |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 300 | * Handler for command with PIO data phase. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | */ |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 302 | static ide_startstop_t task_pio_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | { |
| 304 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 305 | struct ide_cmd *cmd = &drive->hwif->cmd; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 306 | u8 stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 307 | u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 309 | if (write == 0) { |
| 310 | /* Error? */ |
| 311 | if (stat & ATA_ERR) |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 312 | goto out_err; |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 313 | |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 314 | /* Didn't want any data? Odd. */ |
Bartlomiej Zolnierkiewicz | 151055e | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 315 | if ((stat & ATA_DRQ) == 0) { |
| 316 | /* Command all done? */ |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 317 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY)) |
| 318 | goto out_end; |
Bartlomiej Zolnierkiewicz | 151055e | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 319 | |
| 320 | /* Assume it was a spurious irq */ |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 321 | goto out_wait; |
Bartlomiej Zolnierkiewicz | 151055e | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 322 | } |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 323 | } else { |
| 324 | if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 325 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 327 | /* Deal with unexpected ATA data phase. */ |
| 328 | if (((stat & ATA_DRQ) == 0) ^ (cmd->nleft == 0)) |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 329 | goto out_err; |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 330 | } |
| 331 | |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 332 | if (write && cmd->nleft == 0) |
| 333 | goto out_end; |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 334 | |
| 335 | /* Still data left to transfer. */ |
| 336 | ide_pio_datablock(drive, cmd, write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Linus Torvalds | 6c3c315 | 2008-03-18 21:26:24 -0700 | [diff] [blame] | 338 | /* Are we done? Check status and finish transfer. */ |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 339 | if (write == 0 && cmd->nleft == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | stat = wait_drive_not_busy(drive); |
Bartlomiej Zolnierkiewicz | 73d7de0 | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 341 | if (!OK_STAT(stat, 0, BAD_STAT)) |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 342 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 344 | goto out_end; |
| 345 | } |
| 346 | out_wait: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | /* Still data left to transfer. */ |
Bartlomiej Zolnierkiewicz | 60c0cd0 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 348 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | return ide_started; |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 350 | out_end: |
Bartlomiej Zolnierkiewicz | 2230d90d | 2009-03-27 12:46:42 +0100 | [diff] [blame] | 351 | if ((cmd->tf_flags & IDE_TFLAG_FS) == 0) |
| 352 | ide_finish_cmd(drive, cmd, stat); |
| 353 | else |
Bartlomiej Zolnierkiewicz | 130e886 | 2009-03-27 12:46:45 +0100 | [diff] [blame] | 354 | ide_complete_rq(drive, 0, cmd->rq->nr_sectors << 9); |
Bartlomiej Zolnierkiewicz | 0a1248c | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 355 | return ide_stopped; |
| 356 | out_err: |
Bartlomiej Zolnierkiewicz | 041cea1 | 2009-03-27 12:46:41 +0100 | [diff] [blame] | 357 | ide_error_cmd(drive, cmd); |
| 358 | return ide_error(drive, __func__, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } |
| 360 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 361 | static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, |
| 362 | struct ide_cmd *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | ide_startstop_t startstop; |
| 365 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 366 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | drive->bad_wstat, WAIT_DRQ)) { |
| 368 | printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n", |
Bartlomiej Zolnierkiewicz | c7db966 | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 369 | drive->name, |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 370 | (cmd->tf_flags & IDE_TFLAG_MULTI_PIO) ? "MULT" : "", |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 371 | (drive->dev_flags & IDE_DFLAG_LBA48) ? "_EXT" : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return startstop; |
| 373 | } |
| 374 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 375 | if ((drive->dev_flags & IDE_DFLAG_UNMASK) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | local_irq_disable(); |
| 377 | |
Bartlomiej Zolnierkiewicz | 60c0cd0 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 378 | ide_set_handler(drive, &task_pio_intr, WAIT_WORSTCASE); |
Bartlomiej Zolnierkiewicz | 901bd08a | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 379 | |
Bartlomiej Zolnierkiewicz | adb1af9 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 380 | ide_pio_datablock(drive, cmd, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
| 382 | return ide_started; |
| 383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 385 | int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf, |
| 386 | u16 nsect) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | { |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 388 | struct request *rq; |
| 389 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 391 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 392 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
| 393 | rq->buffer = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | /* |
| 396 | * (ks) We transfer currently only whole sectors. |
| 397 | * This is suffient for now. But, it would be great, |
| 398 | * if we would find a solution to transfer any size. |
| 399 | * To support special commands like READ LONG. |
| 400 | */ |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 401 | rq->hard_nr_sectors = rq->nr_sectors = nsect; |
| 402 | rq->hard_cur_sectors = rq->current_nr_sectors = nsect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 404 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 405 | rq->cmd_flags |= REQ_RW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 407 | rq->special = cmd; |
| 408 | cmd->rq = rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
FUJITA Tomonori | 154ed28 | 2008-07-15 21:21:43 +0200 | [diff] [blame] | 410 | error = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 411 | blk_put_request(rq); |
| 412 | |
| 413 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | EXPORT_SYMBOL(ide_raw_taskfile); |
| 417 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 418 | int ide_no_data_taskfile(ide_drive_t *drive, struct ide_cmd *cmd) |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 419 | { |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 420 | cmd->protocol = ATA_PROT_NODATA; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 421 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 422 | return ide_raw_taskfile(drive, cmd, NULL, 0); |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 423 | } |
| 424 | EXPORT_SYMBOL_GPL(ide_no_data_taskfile); |
| 425 | |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 426 | #ifdef CONFIG_IDE_TASK_IOCTL |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 427 | int ide_taskfile_ioctl(ide_drive_t *drive, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | { |
| 429 | ide_task_request_t *req_task; |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 430 | struct ide_cmd cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | u8 *outbuf = NULL; |
| 432 | u8 *inbuf = NULL; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 433 | u8 *data_buf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | int err = 0; |
| 435 | int tasksize = sizeof(struct ide_task_request_s); |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 436 | unsigned int taskin = 0; |
| 437 | unsigned int taskout = 0; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 438 | u16 nsect = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | char __user *buf = (char __user *)arg; |
| 440 | |
| 441 | // printk("IDE Taskfile ...\n"); |
| 442 | |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 443 | req_task = kzalloc(tasksize, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | if (req_task == NULL) return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | if (copy_from_user(req_task, buf, tasksize)) { |
| 446 | kfree(req_task); |
| 447 | return -EFAULT; |
| 448 | } |
| 449 | |
Alan Cox | 3a42bb2 | 2006-10-16 16:31:02 +0100 | [diff] [blame] | 450 | taskout = req_task->out_size; |
| 451 | taskin = req_task->in_size; |
| 452 | |
| 453 | if (taskin > 65536 || taskout > 65536) { |
| 454 | err = -EINVAL; |
| 455 | goto abort; |
| 456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
| 458 | if (taskout) { |
| 459 | int outtotal = tasksize; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 460 | outbuf = kzalloc(taskout, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | if (outbuf == NULL) { |
| 462 | err = -ENOMEM; |
| 463 | goto abort; |
| 464 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | if (copy_from_user(outbuf, buf + outtotal, taskout)) { |
| 466 | err = -EFAULT; |
| 467 | goto abort; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | if (taskin) { |
| 472 | int intotal = tasksize + taskout; |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 473 | inbuf = kzalloc(taskin, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | if (inbuf == NULL) { |
| 475 | err = -ENOMEM; |
| 476 | goto abort; |
| 477 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | if (copy_from_user(inbuf, buf + intotal, taskin)) { |
| 479 | err = -EFAULT; |
| 480 | goto abort; |
| 481 | } |
| 482 | } |
| 483 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 484 | memset(&cmd, 0, sizeof(cmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 486 | memcpy(&cmd.tf_array[0], req_task->hob_ports, |
| 487 | HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 488 | memcpy(&cmd.tf_array[6], req_task->io_ports, |
| 489 | HDIO_DRIVE_TASK_HDR_SIZE); |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 490 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 491 | cmd.tf_flags = IDE_TFLAG_IO_16BIT | IDE_TFLAG_DEVICE | |
| 492 | IDE_TFLAG_IN_TF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 494 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 495 | cmd.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_IN_HOB); |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 496 | |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 497 | if (req_task->out_flags.all) { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 498 | cmd.ftf_flags |= IDE_FTFLAG_FLAGGED; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 499 | |
| 500 | if (req_task->out_flags.b.data) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 501 | cmd.ftf_flags |= IDE_FTFLAG_OUT_DATA; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 502 | |
| 503 | if (req_task->out_flags.b.nsector_hob) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 504 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_NSECT; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 505 | if (req_task->out_flags.b.sector_hob) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 506 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAL; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 507 | if (req_task->out_flags.b.lcyl_hob) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 508 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAM; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 509 | if (req_task->out_flags.b.hcyl_hob) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 510 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB_LBAH; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 511 | |
| 512 | if (req_task->out_flags.b.error_feature) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 513 | cmd.tf_flags |= IDE_TFLAG_OUT_FEATURE; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 514 | if (req_task->out_flags.b.nsector) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 515 | cmd.tf_flags |= IDE_TFLAG_OUT_NSECT; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 516 | if (req_task->out_flags.b.sector) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 517 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAL; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 518 | if (req_task->out_flags.b.lcyl) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 519 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAM; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 520 | if (req_task->out_flags.b.hcyl) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 521 | cmd.tf_flags |= IDE_TFLAG_OUT_LBAH; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 522 | } else { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 523 | cmd.tf_flags |= IDE_TFLAG_OUT_TF; |
| 524 | if (cmd.tf_flags & IDE_TFLAG_LBA48) |
| 525 | cmd.tf_flags |= IDE_TFLAG_OUT_HOB; |
Bartlomiej Zolnierkiewicz | 74095a9 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 526 | } |
| 527 | |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 528 | if (req_task->in_flags.b.data) |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 529 | cmd.ftf_flags |= IDE_FTFLAG_IN_DATA; |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 530 | |
Bartlomiej Zolnierkiewicz | 04d09b0 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 531 | if (req_task->req_cmd == IDE_DRIVE_TASK_RAW_WRITE) { |
| 532 | /* fixup data phase if needed */ |
| 533 | if (req_task->data_phase == TASKFILE_IN_DMAQ || |
| 534 | req_task->data_phase == TASKFILE_IN_DMA) |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 535 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
Bartlomiej Zolnierkiewicz | 04d09b0 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 536 | } |
| 537 | |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 538 | cmd.protocol = ATA_PROT_DMA; |
| 539 | |
| 540 | switch (req_task->data_phase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | case TASKFILE_MULTI_OUT: |
| 542 | if (!drive->mult_count) { |
| 543 | /* (hs): give up if multcount is not set */ |
| 544 | printk(KERN_ERR "%s: %s Multimode Write " \ |
| 545 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 546 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | err = -EPERM; |
| 548 | goto abort; |
| 549 | } |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 550 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | /* fall through */ |
| 552 | case TASKFILE_OUT: |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 553 | cmd.protocol = ATA_PROT_PIO; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 554 | /* fall through */ |
| 555 | case TASKFILE_OUT_DMAQ: |
| 556 | case TASKFILE_OUT_DMA: |
Bartlomiej Zolnierkiewicz | 04d09b0 | 2009-03-27 12:46:38 +0100 | [diff] [blame] | 557 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 558 | nsect = taskout / SECTOR_SIZE; |
| 559 | data_buf = outbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | break; |
| 561 | case TASKFILE_MULTI_IN: |
| 562 | if (!drive->mult_count) { |
| 563 | /* (hs): give up if multcount is not set */ |
| 564 | printk(KERN_ERR "%s: %s Multimode Read failure " \ |
| 565 | "multcount is not set\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 566 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | err = -EPERM; |
| 568 | goto abort; |
| 569 | } |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 570 | cmd.tf_flags |= IDE_TFLAG_MULTI_PIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | /* fall through */ |
| 572 | case TASKFILE_IN: |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 573 | cmd.protocol = ATA_PROT_PIO; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 574 | /* fall through */ |
| 575 | case TASKFILE_IN_DMAQ: |
| 576 | case TASKFILE_IN_DMA: |
| 577 | nsect = taskin / SECTOR_SIZE; |
| 578 | data_buf = inbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | break; |
| 580 | case TASKFILE_NO_DATA: |
Bartlomiej Zolnierkiewicz | 0dfb991 | 2009-03-27 12:46:39 +0100 | [diff] [blame] | 581 | cmd.protocol = ATA_PROT_NODATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | break; |
| 583 | default: |
| 584 | err = -EFAULT; |
| 585 | goto abort; |
| 586 | } |
| 587 | |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 588 | if (req_task->req_cmd == IDE_DRIVE_TASK_NO_DATA) |
| 589 | nsect = 0; |
| 590 | else if (!nsect) { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 591 | nsect = (cmd.tf.hob_nsect << 8) | cmd.tf.nsect; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 592 | |
| 593 | if (!nsect) { |
| 594 | printk(KERN_ERR "%s: in/out command without data\n", |
| 595 | drive->name); |
| 596 | err = -EFAULT; |
| 597 | goto abort; |
| 598 | } |
| 599 | } |
| 600 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 601 | err = ide_raw_taskfile(drive, &cmd, data_buf, nsect); |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 602 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 603 | memcpy(req_task->hob_ports, &cmd.tf_array[0], |
| 604 | HDIO_DRIVE_HOB_HDR_SIZE - 2); |
| 605 | memcpy(req_task->io_ports, &cmd.tf_array[6], |
| 606 | HDIO_DRIVE_TASK_HDR_SIZE); |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 607 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame] | 608 | if ((cmd.ftf_flags & IDE_FTFLAG_SET_IN_FLAGS) && |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 609 | req_task->in_flags.all == 0) { |
| 610 | req_task->in_flags.all = IDE_TASKFILE_STD_IN_FLAGS; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 611 | if (drive->dev_flags & IDE_DFLAG_LBA48) |
Bartlomiej Zolnierkiewicz | 866e2ec | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 612 | req_task->in_flags.all |= (IDE_HOB_STD_IN_FLAGS << 8); |
| 613 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
| 615 | if (copy_to_user(buf, req_task, tasksize)) { |
| 616 | err = -EFAULT; |
| 617 | goto abort; |
| 618 | } |
| 619 | if (taskout) { |
| 620 | int outtotal = tasksize; |
| 621 | if (copy_to_user(buf + outtotal, outbuf, taskout)) { |
| 622 | err = -EFAULT; |
| 623 | goto abort; |
| 624 | } |
| 625 | } |
| 626 | if (taskin) { |
| 627 | int intotal = tasksize + taskout; |
| 628 | if (copy_to_user(buf + intotal, inbuf, taskin)) { |
| 629 | err = -EFAULT; |
| 630 | goto abort; |
| 631 | } |
| 632 | } |
| 633 | abort: |
| 634 | kfree(req_task); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 635 | kfree(outbuf); |
| 636 | kfree(inbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
| 638 | // printk("IDE Taskfile ioctl ended. rc = %i\n", err); |
| 639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | return err; |
| 641 | } |
Bartlomiej Zolnierkiewicz | 26a5b04 | 2007-11-05 21:42:27 +0100 | [diff] [blame] | 642 | #endif |