diff options
Diffstat (limited to 'arch/powerpc/kernel/dma-swiotlb.c')
| -rw-r--r-- | arch/powerpc/kernel/dma-swiotlb.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index 1ebc9189aad..bd1a2aba599 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -12,6 +12,7 @@ */ #include <linux/dma-mapping.h> +#include <linux/memblock.h> #include <linux/pfn.h> #include <linux/of_platform.h> #include <linux/platform_device.h> @@ -20,7 +21,6 @@ #include <asm/machdep.h> #include <asm/swiotlb.h> #include <asm/dma.h> -#include <asm/abs_addr.h> unsigned int ppc_swiotlb_enable; @@ -47,8 +47,9 @@ static u64 swiotlb_powerpc_get_required(struct device *dev) * for everything else. */ struct dma_map_ops swiotlb_dma_ops = { - .alloc_coherent = dma_direct_alloc_coherent, - .free_coherent = dma_direct_free_coherent, + .alloc = dma_direct_alloc_coherent, + .free = dma_direct_free_coherent, + .mmap = dma_direct_mmap_coherent, .map_sg = swiotlb_map_sg_attrs, .unmap_sg = swiotlb_unmap_sg_attrs, .dma_supported = swiotlb_dma_supported, @@ -104,3 +105,23 @@ int __init swiotlb_setup_bus_notifier(void) &ppc_swiotlb_plat_bus_notifier); return 0; } + +void swiotlb_detect_4g(void) +{ + if ((memblock_end_of_DRAM() - 1) > 0xffffffff) + ppc_swiotlb_enable = 1; +} + +static int __init swiotlb_late_init(void) +{ + if (ppc_swiotlb_enable) { + swiotlb_print_info(); + set_pci_dma_ops(&swiotlb_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; + } else { + swiotlb_free(); + } + + return 0; +} +subsys_initcall(swiotlb_late_init); |