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![Christoph Hellwig](/assets/img/avatar_default.png)
Just replace it with a field of the same name in struct ide_req. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
192 lines
3.9 KiB
C
192 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/kernel.h>
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#include <linux/gfp.h>
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#include <linux/ide.h>
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DEFINE_MUTEX(ide_setting_mtx);
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ide_devset_get(io_32bit, io_32bit);
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static int set_io_32bit(ide_drive_t *drive, int arg)
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{
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if (drive->dev_flags & IDE_DFLAG_NO_IO_32BIT)
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return -EPERM;
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if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
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return -EINVAL;
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drive->io_32bit = arg;
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return 0;
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}
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ide_devset_get_flag(ksettings, IDE_DFLAG_KEEP_SETTINGS);
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static int set_ksettings(ide_drive_t *drive, int arg)
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{
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if (arg < 0 || arg > 1)
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return -EINVAL;
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if (arg)
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drive->dev_flags |= IDE_DFLAG_KEEP_SETTINGS;
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else
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drive->dev_flags &= ~IDE_DFLAG_KEEP_SETTINGS;
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return 0;
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}
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ide_devset_get_flag(using_dma, IDE_DFLAG_USING_DMA);
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static int set_using_dma(ide_drive_t *drive, int arg)
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{
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#ifdef CONFIG_BLK_DEV_IDEDMA
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int err = -EPERM;
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if (arg < 0 || arg > 1)
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return -EINVAL;
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if (ata_id_has_dma(drive->id) == 0)
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goto out;
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if (drive->hwif->dma_ops == NULL)
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goto out;
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err = 0;
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if (arg) {
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if (ide_set_dma(drive))
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err = -EIO;
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} else
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ide_dma_off(drive);
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out:
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return err;
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#else
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if (arg < 0 || arg > 1)
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return -EINVAL;
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return -EPERM;
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#endif
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}
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/*
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* handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
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*/
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static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
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{
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switch (req_pio) {
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case 202:
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case 201:
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case 200:
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case 102:
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case 101:
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case 100:
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return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
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case 9:
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case 8:
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return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
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case 7:
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case 6:
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return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
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default:
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return 0;
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}
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}
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static int set_pio_mode(ide_drive_t *drive, int arg)
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{
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ide_hwif_t *hwif = drive->hwif;
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const struct ide_port_ops *port_ops = hwif->port_ops;
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if (arg < 0 || arg > 255)
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return -EINVAL;
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if (port_ops == NULL || port_ops->set_pio_mode == NULL ||
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(hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
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return -ENOSYS;
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if (set_pio_mode_abuse(drive->hwif, arg)) {
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drive->pio_mode = arg + XFER_PIO_0;
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if (arg == 8 || arg == 9) {
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unsigned long flags;
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/* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
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spin_lock_irqsave(&hwif->lock, flags);
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port_ops->set_pio_mode(hwif, drive);
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spin_unlock_irqrestore(&hwif->lock, flags);
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} else
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port_ops->set_pio_mode(hwif, drive);
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} else {
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int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
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ide_set_pio(drive, arg);
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if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
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if (keep_dma)
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ide_dma_on(drive);
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}
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}
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return 0;
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}
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ide_devset_get_flag(unmaskirq, IDE_DFLAG_UNMASK);
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static int set_unmaskirq(ide_drive_t *drive, int arg)
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{
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if (drive->dev_flags & IDE_DFLAG_NO_UNMASK)
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return -EPERM;
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if (arg < 0 || arg > 1)
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return -EINVAL;
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if (arg)
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drive->dev_flags |= IDE_DFLAG_UNMASK;
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else
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drive->dev_flags &= ~IDE_DFLAG_UNMASK;
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return 0;
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}
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ide_ext_devset_rw_sync(io_32bit, io_32bit);
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ide_ext_devset_rw_sync(keepsettings, ksettings);
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ide_ext_devset_rw_sync(unmaskirq, unmaskirq);
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ide_ext_devset_rw_sync(using_dma, using_dma);
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__IDE_DEVSET(pio_mode, DS_SYNC, NULL, set_pio_mode);
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int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
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int arg)
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{
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struct request_queue *q = drive->queue;
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struct request *rq;
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int ret = 0;
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if (!(setting->flags & DS_SYNC))
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return setting->set(drive, arg);
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rq = blk_get_request(q, REQ_OP_DRV_IN, 0);
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ide_req(rq)->type = ATA_PRIV_MISC;
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scsi_req(rq)->cmd_len = 5;
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scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;
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*(int *)&scsi_req(rq)->cmd[1] = arg;
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ide_req(rq)->special = setting->set;
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blk_execute_rq(q, NULL, rq, 0);
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ret = scsi_req(rq)->result;
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blk_put_request(rq);
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return ret;
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}
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ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
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{
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int err, (*setfunc)(ide_drive_t *, int) = ide_req(rq)->special;
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err = setfunc(drive, *(int *)&scsi_req(rq)->cmd[1]);
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if (err)
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scsi_req(rq)->result = err;
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ide_complete_rq(drive, 0, blk_rq_bytes(rq));
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return ide_stopped;
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}
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