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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2009-01-05 15:36:12 +0100
committerIngo Molnar <mingo@elte.hu>2009-01-06 14:06:50 +0100
commit4d9b977ca674dd40cfc1409a75cb73fca2cee423 (patch)
tree417f80889ab49c61c2258b157cfe993bdf8d8357 /arch/ia64/sn/pci
parentadd dma_mapping_ops for SWIOTLB (diff)
downloadlinux-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.c5
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;
+}