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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-01-05 23:36:12 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-06 14:06:50 +0100 |
| commit | 4d9b977ca674dd40cfc1409a75cb73fca2cee423 (patch) | |
| tree | 417f80889ab49c61c2258b157cfe993bdf8d8357 /arch/ia64/hp/common/hwsw_iommu.c | |
| parent | c82e4417ace9a3a4dddf3332379c771c41040040 (diff) | |
| download | kernel_samsung_espresso10-4d9b977ca674dd40cfc1409a75cb73fca2cee423.zip kernel_samsung_espresso10-4d9b977ca674dd40cfc1409a75cb73fca2cee423.tar.gz kernel_samsung_espresso10-4d9b977ca674dd40cfc1409a75cb73fca2cee423.tar.bz2 | |
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/hp/common/hwsw_iommu.c')
| -rw-r--r-- | arch/ia64/hp/common/hwsw_iommu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c index a40dcdd..22145de 100644 --- a/arch/ia64/hp/common/hwsw_iommu.c +++ b/arch/ia64/hp/common/hwsw_iommu.c @@ -56,9 +56,12 @@ use_swiotlb (struct device *dev) return dev && dev->dma_mask && !hwiommu_dma_supported(dev, *dev->dma_mask); } +struct dma_mapping_ops hwsw_dma_ops; + void __init hwsw_init (void) { + dma_ops = &hwsw_dma_ops; /* default to a smallish 2MB sw I/O TLB */ if (swiotlb_late_init_with_default_size (2 * (1<<20)) != 0) { #ifdef CONFIG_IA64_GENERIC |