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>
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592b531521
commit
05789634ef
1 changed files with 16 additions and 21 deletions
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@ -61,6 +61,16 @@ u8 ide_dma_sff_read_status(ide_hwif_t *hwif)
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}
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}
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EXPORT_SYMBOL_GPL(ide_dma_sff_read_status);
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EXPORT_SYMBOL_GPL(ide_dma_sff_read_status);
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static void ide_dma_sff_write_status(ide_hwif_t *hwif, u8 val)
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{
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unsigned long addr = hwif->dma_base + ATA_DMA_STATUS;
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if (hwif->host_flags & IDE_HFLAG_MMIO)
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writeb(val, (void __iomem *)addr);
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else
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outb(val, addr);
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}
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/**
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/**
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* ide_dma_host_set - Enable/disable DMA on a host
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* ide_dma_host_set - Enable/disable DMA on a host
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* @drive: drive to control
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* @drive: drive to control
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@ -80,11 +90,7 @@ void ide_dma_host_set(ide_drive_t *drive, int on)
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else
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else
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dma_stat &= ~(1 << (5 + unit));
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dma_stat &= ~(1 << (5 + unit));
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if (hwif->host_flags & IDE_HFLAG_MMIO)
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ide_dma_sff_write_status(hwif, dma_stat);
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writeb(dma_stat,
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(void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
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else
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outb(dma_stat, hwif->dma_base + ATA_DMA_STATUS);
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}
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}
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EXPORT_SYMBOL_GPL(ide_dma_host_set);
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EXPORT_SYMBOL_GPL(ide_dma_host_set);
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@ -198,7 +204,7 @@ int ide_dma_setup(ide_drive_t *drive)
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}
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}
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/* PRD table */
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/* PRD table */
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if (hwif->host_flags & IDE_HFLAG_MMIO)
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if (mmio)
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writel(hwif->dmatable_dma,
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writel(hwif->dmatable_dma,
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(void __iomem *)(hwif->dma_base + ATA_DMA_TABLE_OFS));
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(void __iomem *)(hwif->dma_base + ATA_DMA_TABLE_OFS));
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else
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else
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@ -214,12 +220,7 @@ int ide_dma_setup(ide_drive_t *drive)
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dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
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dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
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/* clear INTR & ERROR flags */
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/* clear INTR & ERROR flags */
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if (mmio)
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ide_dma_sff_write_status(hwif, dma_stat | ATA_DMA_ERR | ATA_DMA_INTR);
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writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
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(void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
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else
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outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
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hwif->dma_base + ATA_DMA_STATUS);
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drive->waiting_for_dma = 1;
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drive->waiting_for_dma = 1;
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return 0;
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return 0;
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@ -300,13 +301,12 @@ EXPORT_SYMBOL_GPL(ide_dma_start);
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int ide_dma_end(ide_drive_t *drive)
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int ide_dma_end(ide_drive_t *drive)
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{
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{
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ide_hwif_t *hwif = drive->hwif;
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ide_hwif_t *hwif = drive->hwif;
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u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
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u8 dma_stat = 0, dma_cmd = 0, mask;
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u8 dma_stat = 0, dma_cmd = 0, mask;
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drive->waiting_for_dma = 0;
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drive->waiting_for_dma = 0;
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/* stop DMA */
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/* stop DMA */
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if (mmio) {
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if (hwif->host_flags & IDE_HFLAG_MMIO) {
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dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
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dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
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writeb(dma_cmd & ~ATA_DMA_START,
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writeb(dma_cmd & ~ATA_DMA_START,
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(void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
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(void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
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@ -318,13 +318,8 @@ int ide_dma_end(ide_drive_t *drive)
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/* get DMA status */
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/* get DMA status */
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dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
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dma_stat = hwif->dma_ops->dma_sff_read_status(hwif);
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if (mmio)
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/* clear INTR & ERROR bits */
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/* clear the INTR & ERROR bits */
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ide_dma_sff_write_status(hwif, dma_stat | ATA_DMA_ERR | ATA_DMA_INTR);
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writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
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(void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
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else
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outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
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hwif->dma_base + ATA_DMA_STATUS);
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/* purge DMA mappings */
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/* purge DMA mappings */
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ide_destroy_dmatable(drive);
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ide_destroy_dmatable(drive);
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