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ide: remove ->ide_dma_check (take 2)

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* Add IDE_HFLAG_TRUST_BIOS_FOR_DMA host flag for host drivers that depend
  on BIOS for programming device/controller for DMA.  Set it in cy82c693,
  generic, ns87415, opti621 and trm290 host drivers.

* Add IDE_HFLAG_VDMA host flag for host drivers using VDMA.  Set it in cs5520
  host driver.

* Teach ide_tune_dma() about IDE_HFLAG_TRUST_BIOS_FOR_DMA flag.

* Add generic ide_dma_check() helper and remove all open coded ->ide_dma_check
  implementations.  Fix all places checking for presence of ->ide_dma_check
  hook to check for ->ide_dma_on instead.

* Remove no longer needed code from config_drive_for_dma().

* Make ide_tune_dma() static.

v2:
* Fix config_drive_for_dma() return values.

* Fix ide-dma.c build for CONFIG_BLK_DEV_IDEDMA_PCI=n by adding
  dummy config_drive_for_dma() inline.

* Fix IDE_HFLAG_TRUST_BIOS_FOR_DMA handling in ide_dma_check().

* Fix init_hwif_it8213() comment.

There should be no functionality changes caused by this patch.

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-10-16 22:29:55 +02:00
parent b8b739d336
commit 0ae2e17865
42 changed files with 79 additions and 501 deletions
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22
drivers/ide/pci/scc_pata.c
View File

@@ -283,27 +283,6 @@ static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
out_be32((void __iomem *)udenvt_port, reg);
}
/**
* scc_configure_drive_for_dma - set up for DMA transfers
* @drive: drive we are going to set up
*
* Set up the drive for DMA, tune the controller and drive as
* required.
* If the drive isn't suitable for DMA or we hit other problems
* then we will drop down to PIO and set up PIO appropriately.
* (return -1)
*/
static int scc_config_drive_for_dma(ide_drive_t *drive)
{
if (ide_tune_dma(drive))
return 0;
ide_set_max_pio(drive);
return -1;
}
/**
* scc_ide_dma_setup - begin a DMA phase
* @drive: target device
@@ -701,7 +680,6 @@ static void __devinit init_hwif_scc(ide_hwif_t *hwif)
hwif->ide_dma_end = scc_ide_dma_end;
hwif->set_pio_mode = scc_set_pio_mode;
hwif->set_dma_mode = scc_set_dma_mode;
hwif->ide_dma_check = scc_config_drive_for_dma;
hwif->ide_dma_test_irq = scc_dma_test_irq;
hwif->udma_filter = scc_udma_filter;