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author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-01-05 15:36:12 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-01-06 14:06:50 +0100 |
commit | 4d9b977ca674dd40cfc1409a75cb73fca2cee423 (patch) | |
tree | 417f80889ab49c61c2258b157cfe993bdf8d8357 /arch/ia64/sn/pci | |
parent | add dma_mapping_ops for SWIOTLB (diff) | |
download | linux-4d9b977ca674dd40cfc1409a75cb73fca2cee423.tar.xz linux-4d9b977ca674dd40cfc1409a75cb73fca2cee423.zip |
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/sn/pci')
-rw-r--r-- | arch/ia64/sn/pci/pci_dma.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c index 4ad13ff7cf1e..174a74e63882 100644 --- a/arch/ia64/sn/pci/pci_dma.c +++ b/arch/ia64/sn/pci/pci_dma.c @@ -481,3 +481,8 @@ struct dma_mapping_ops sn_dma_ops = { .mapping_error = sn_dma_mapping_error, .dma_supported_op = sn_dma_supported, }; + +void sn_dma_init(void) +{ + dma_ops = &sn_dma_ops; +} |