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author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-01-05 14:36:12 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-01-06 13:06:50 (GMT) |
commit | 4d9b977ca674dd40cfc1409a75cb73fca2cee423 (patch) | |
tree | 417f80889ab49c61c2258b157cfe993bdf8d8357 /arch/ia64/kernel/pci-swiotlb.c | |
parent | c82e4417ace9a3a4dddf3332379c771c41040040 (diff) | |
download | linux-fsl-qoriq-4d9b977ca674dd40cfc1409a75cb73fca2cee423.tar.xz |
set up dma_ops appropriately
This patch introduces a global pointer, dma_ops, which points to an
appropriate dma_mapping_ops that the kernel should use. This is a
common way to handle multiple dma_mapping_ops (X86, POWER, and SPARC).
dma_ops is set in platform_dma_init. We also set it by hand where
machvec_init is callev via subsys_initcall.
- IA64_DIG_VTD uses vtd_dma_ops.
- IA64_HP_ZX1 uses sba_dma_ops.
- IA64_HP_ZX1_SWIOTLB uses hwsw_dma_ops.
- IA64_SGI_SN2 uses sn_dma_ops.
- The rest use swiotlb_dma_ops.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/ia64/kernel/pci-swiotlb.c')
-rw-r--r-- | arch/ia64/kernel/pci-swiotlb.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c index b62fb93..9f172c8 100644 --- a/arch/ia64/kernel/pci-swiotlb.c +++ b/arch/ia64/kernel/pci-swiotlb.c @@ -37,6 +37,12 @@ struct dma_mapping_ops swiotlb_dma_ops = { .mapping_error = swiotlb_dma_mapping_error, }; +void swiotlb_dma_init(void) +{ + dma_ops = &swiotlb_dma_ops; + swiotlb_init(); +} + void __init pci_swiotlb_init(void) { if (!iommu_detected) { |