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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 19:55:55 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 19:55:55 +0200 |
| commit | ba4b2e607e4e9eaa929935325dafd5c86d3b5262 (patch) | |
| tree | a1467b1bf355758d74343cc708c7f6fa70400faf /drivers/ide/pci/cs5520.c | |
| parent | ide: mark hpt34x host driver as BROKEN (diff) | |
| download | linux-ba4b2e607e4e9eaa929935325dafd5c86d3b5262.tar.xz linux-ba4b2e607e4e9eaa929935325dafd5c86d3b5262.zip | |
ide: remove dead Virtual DMA support
Lets remove dead Virtual DMA support for now so it doesn't clutter
core IDE code (it can be bring back when there is a need for it):
* Remove IDE_HFLAG_VDMA host flag.
* Remove ide_drive_t.vdma flag.
* cs5520.c: remove stale FIXMEs, cs5520_dma_host_set() and cs5520_dma_ops
(also there is no longer a need to set IDE_HFLAG_NO_ATAPI_DMA).
There should be no functional changes caused by this patch.
Cc: TAKADA Yoshihito <takada@mbf.nifty.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/cs5520.c')
| -rw-r--r-- | drivers/ide/pci/cs5520.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c index a13f2bc0665c..d30cb4d99c45 100644 --- a/drivers/ide/pci/cs5520.c +++ b/drivers/ide/pci/cs5520.c @@ -62,8 +62,6 @@ static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio) struct pci_dev *pdev = to_pci_dev(hwif->dev); int controller = drive->dn > 1 ? 1 : 0; - /* FIXME: if DMA = 1 do we need to set the DMA bit here ? */ - /* 8bit CAT/CRT - 8bit command timing for channel */ pci_write_config_byte(pdev, 0x62 + controller, (cs5520_pio_clocks[pio].recovery << 4) | @@ -89,45 +87,17 @@ static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed) cs5520_set_pio_mode(drive, 0); } -/* - * We wrap the DMA activate to set the vdma flag. This is needed - * so that the IDE DMA layer issues PIO not DMA commands over the - * DMA channel - * - * ATAPI is harder so disable it for now using IDE_HFLAG_NO_ATAPI_DMA - */ - -static void cs5520_dma_host_set(ide_drive_t *drive, int on) -{ - drive->vdma = on; - ide_dma_host_set(drive, on); -} - static const struct ide_port_ops cs5520_port_ops = { .set_pio_mode = cs5520_set_pio_mode, .set_dma_mode = cs5520_set_dma_mode, }; -static const struct ide_dma_ops cs5520_dma_ops = { - .dma_host_set = cs5520_dma_host_set, - .dma_setup = ide_dma_setup, - .dma_exec_cmd = ide_dma_exec_cmd, - .dma_start = ide_dma_start, - .dma_end = __ide_dma_end, - .dma_test_irq = ide_dma_test_irq, - .dma_lost_irq = ide_dma_lost_irq, - .dma_timeout = ide_dma_timeout, -}; - -/* FIXME: VDMA is disabled because it caused system hangs */ #define DECLARE_CS_DEV(name_str) \ { \ .name = name_str, \ .port_ops = &cs5520_port_ops, \ - .dma_ops = &cs5520_dma_ops, \ .host_flags = IDE_HFLAG_ISA_PORTS | \ IDE_HFLAG_CS5520 | \ - IDE_HFLAG_NO_ATAPI_DMA | \ IDE_HFLAG_ABUSE_SET_DMA_MODE, \ .pio_mask = ATA_PIO4, \ } |