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| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2009-01-06 17:21:02 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-01-06 17:21:02 +0100 |
| commit | 05789634ef84c78494c61124e69da49441735146 (patch) | |
| tree | 757c705b015d0f5db765a8fc3f4f06cbd43efea6 /drivers/ide/ide-dma-sff.c | |
| parent | 592b5315219881c6c0af4785f96456ad2043193a (diff) | |
| download | kernel_samsung_smdk4412-05789634ef84c78494c61124e69da49441735146.zip kernel_samsung_smdk4412-05789634ef84c78494c61124e69da49441735146.tar.gz kernel_samsung_smdk4412-05789634ef84c78494c61124e69da49441735146.tar.bz2 | |
ide-dma-sff: factor out ide_dma_sff_write_status()
Factor out ide_dma_sff_write_status(), symmetric to ide_dma_sff_read_status().
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-dma-sff.c')
| -rw-r--r-- | drivers/ide/ide-dma-sff.c | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c index bcdadc7..123d393 100644 --- a/drivers/ide/ide-dma-sff.c +++ b/drivers/ide/ide-dma-sff.c @@ -61,6 +61,16 @@ u8 ide_dma_sff_read_status(ide_hwif_t *hwif) } EXPORT_SYMBOL_GPL(ide_dma_sff_read_status); +static void ide_dma_sff_write_status(ide_hwif_t *hwif, u8 val) +{ + unsigned long addr = hwif->dma_base + ATA_DMA_STATUS; + + if (hwif->host_flags & IDE_HFLAG_MMIO) + writeb(val, (void __iomem *)addr); + else + outb(val, addr); +} + /** * ide_dma_host_set - Enable/disable DMA on a host * @drive: drive to control @@ -80,11 +90,7 @@ void ide_dma_host_set(ide_drive_t *drive, int on) else dma_stat &= ~(1 << (5 + unit)); - if (hwif->host_flags & IDE_HFLAG_MMIO) - writeb(dma_stat, - (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS)); - else - outb(dma_stat, hwif->dma_base + ATA_DMA_STATUS); + ide_dma_sff_write_status(hwif, dma_stat); } EXPORT_SYMBOL_GPL(ide_dma_host_set); @@ -198,7 +204,7 @@ int ide_dma_setup(ide_drive_t *drive) } /* PRD table */ - if (hwif->host_flags & IDE_HFLAG_MMIO) + if (mmio) writel(hwif->dmatable_dma, (void __iomem *)(hwif->dma_base + ATA_DMA_TABLE_OFS)); else @@ -214,12 +220,7 @@ int ide_dma_setup(ide_drive_t *drive) dma_stat = hwif->dma_ops->dma_sff_read_status(hwif); /* clear INTR & ERROR flags */ - if (mmio) - writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR, - (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS)); - else - outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR, - hwif->dma_base + ATA_DMA_STATUS); + ide_dma_sff_write_status(hwif, dma_stat | ATA_DMA_ERR | ATA_DMA_INTR); drive->waiting_for_dma = 1; return 0; @@ -300,13 +301,12 @@ EXPORT_SYMBOL_GPL(ide_dma_start); int ide_dma_end(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0; u8 dma_stat = 0, dma_cmd = 0, mask; drive->waiting_for_dma = 0; /* stop DMA */ - if (mmio) { + if (hwif->host_flags & IDE_HFLAG_MMIO) { dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD)); writeb(dma_cmd & ~ATA_DMA_START, (void __iomem *)(hwif->dma_base + ATA_DMA_CMD)); @@ -318,13 +318,8 @@ int ide_dma_end(ide_drive_t *drive) /* get DMA status */ dma_stat = hwif->dma_ops->dma_sff_read_status(hwif); - if (mmio) - /* clear the INTR & ERROR bits */ - writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR, - (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS)); - else - outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR, - hwif->dma_base + ATA_DMA_STATUS); + /* clear INTR & ERROR bits */ + ide_dma_sff_write_status(hwif, dma_stat | ATA_DMA_ERR | ATA_DMA_INTR); /* purge DMA mappings */ ide_destroy_dmatable(drive); |