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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:56 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:56 +0200 |
| commit | c58e79dd44243ec919d789193ffb35a220c54695 (patch) | |
| tree | 66b76ed3fe5dc996dcf0756e173d53f5bb017d9d /drivers/ide | |
| parent | 9cbcc5e3c5d2d0355fed22d00762fd764c81a383 (diff) | |
| download | linux-c58e79dd44243ec919d789193ffb35a220c54695.tar.bz2 | |
ide: remove CONFIG_BLK_DEV_IDEDMA_FORCED
This code doesn't use pci_assign_resource() and ide_get_or_set_dma_base() uses
pci_resource_start() to get DMA base address so it has no chance of working.
Moreover this belongs to PCI quirks (in case somebody would like to fix it).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/ide/setup-pci.c | 46 |
2 files changed, 3 insertions, 51 deletions
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig index 8982c0932438..5fbd06b7893d 100644 --- a/drivers/ide/Kconfig +++ b/drivers/ide/Kconfig @@ -435,14 +435,6 @@ config BLK_DEV_IDEDMA_PCI bool select BLK_DEV_IDEPCI -config BLK_DEV_IDEDMA_FORCED - bool "Force enable legacy 2.0.X HOSTS to use DMA" - depends on BLK_DEV_IDEDMA_PCI - help - This is an old piece of lost code from Linux 2.0 Kernels. - - Generally say N here. - # TODO: remove it config IDEDMA_ONLYDISK bool "Enable DMA only for disks " diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c index 1129f8c30840..f620da42e157 100644 --- a/drivers/ide/setup-pci.c +++ b/drivers/ide/setup-pci.c @@ -145,27 +145,13 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name) } #ifdef CONFIG_BLK_DEV_IDEDMA_PCI - -#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED -/* - * Long lost data from 2.0.34 that is now in 2.0.39 - * - * This was used in ./drivers/block/triton.c to do DMA Base address setup - * when PnP failed. Oh the things we forget. I believe this was part - * of SFF-8038i that has been withdrawn from public access... :-(( - */ -#define DEFAULT_BMIBA 0xe800 /* in case BIOS did not init it */ -#define DEFAULT_BMCRBA 0xcc00 /* VIA's default value */ -#define DEFAULT_BMALIBA 0xd400 /* ALI's default value */ -#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */ - /** * ide_get_or_set_dma_base - setup BMIBA * @hwif: Interface * - * Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space: - * If need be we set up the DMA base. Where a device has a partner that - * is already in DMA mode we check and enforce IDE simplex rules. + * Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space. + * Where a device has a partner that is already in DMA mode we check + * and enforce IDE simplex rules. */ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif) @@ -173,12 +159,6 @@ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif) unsigned long dma_base = 0; struct pci_dev *dev = hwif->pci_dev; -#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED - int second_chance = 0; - -second_chance_to_dma: -#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */ - if (hwif->mmio) return hwif->dma_base; @@ -192,26 +172,6 @@ second_chance_to_dma: } } -#ifdef CONFIG_BLK_DEV_IDEDMA_FORCED - /* FIXME - should use pci_assign_resource surely */ - if ((!dma_base) && (!second_chance)) { - unsigned long set_bmiba = 0; - second_chance++; - switch(dev->vendor) { - case PCI_VENDOR_ID_AL: - set_bmiba = DEFAULT_BMALIBA; break; - case PCI_VENDOR_ID_VIA: - set_bmiba = DEFAULT_BMCRBA; break; - case PCI_VENDOR_ID_INTEL: - set_bmiba = DEFAULT_BMIBA; break; - default: - return dma_base; - } - pci_write_config_dword(dev, 0x20, set_bmiba|1); - goto second_chance_to_dma; - } -#endif /* CONFIG_BLK_DEV_IDEDMA_FORCED */ - if (dma_base) { u8 simplex_stat = 0; dma_base += hwif->channel ? 8 : 0; |