diff options
Diffstat (limited to 'arch/mips/cavium-octeon/dma-octeon.c')
| -rw-r--r-- | arch/mips/cavium-octeon/dma-octeon.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octeon/dma-octeon.c index 1abb66caaa1..02f24447520 100644 --- a/arch/mips/cavium-octeon/dma-octeon.c +++ b/arch/mips/cavium-octeon/dma-octeon.c @@ -13,6 +13,7 @@ #include <linux/dma-mapping.h> #include <linux/scatterlist.h> #include <linux/bootmem.h> +#include <linux/export.h> #include <linux/swiotlb.h> #include <linux/types.h> #include <linux/init.h> @@ -60,6 +61,16 @@ static phys_addr_t octeon_gen1_dma_to_phys(struct device *dev, dma_addr_t daddr) return daddr; } +static dma_addr_t octeon_gen2_phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + return octeon_hole_phys_to_dma(paddr); +} + +static phys_addr_t octeon_gen2_dma_to_phys(struct device *dev, dma_addr_t daddr) +{ + return octeon_hole_dma_to_phys(daddr); +} + static dma_addr_t octeon_big_phys_to_dma(struct device *dev, phys_addr_t paddr) { if (paddr >= 0x410000000ull && paddr < 0x420000000ull) @@ -146,7 +157,7 @@ static void octeon_dma_sync_sg_for_device(struct device *dev, } static void *octeon_dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; @@ -181,7 +192,7 @@ static void *octeon_dma_alloc_coherent(struct device *dev, size_t size, } static void octeon_dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) + void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs) { int order = get_order(size); @@ -229,8 +240,8 @@ EXPORT_SYMBOL(dma_to_phys); static struct octeon_dma_map_ops octeon_linear_dma_map_ops = { .dma_map_ops = { - .alloc_coherent = octeon_dma_alloc_coherent, - .free_coherent = octeon_dma_free_coherent, + .alloc = octeon_dma_alloc_coherent, + .free = octeon_dma_free_coherent, .map_page = octeon_dma_map_page, .unmap_page = swiotlb_unmap_page, .map_sg = octeon_dma_map_sg, @@ -261,11 +272,11 @@ void __init plat_swiotlb_setup(void) for (i = 0 ; i < boot_mem_map.nr_map; i++) { struct boot_mem_map_entry *e = &boot_mem_map.map[i]; - if (e->type != BOOT_MEM_RAM) + if (e->type != BOOT_MEM_RAM && e->type != BOOT_MEM_INIT_RAM) continue; /* These addresses map low for PCI. */ - if (e->addr > 0x410000000ull) + if (e->addr > 0x410000000ull && !OCTEON_IS_MODEL(OCTEON_CN6XXX)) continue; addr_size += e->size; @@ -295,13 +306,19 @@ void __init plat_swiotlb_setup(void) swiotlbsize = 64 * (1<<20); } #endif +#ifdef CONFIG_USB_OCTEON_OHCI + /* OCTEON II ohci is only 32-bit. */ + if (OCTEON_IS_MODEL(OCTEON_CN6XXX) && max_addr >= 0x100000000ul) + swiotlbsize = 64 * (1<<20); +#endif swiotlb_nslabs = swiotlbsize >> IO_TLB_SHIFT; swiotlb_nslabs = ALIGN(swiotlb_nslabs, IO_TLB_SEGSIZE); swiotlbsize = swiotlb_nslabs << IO_TLB_SHIFT; octeon_swiotlb = alloc_bootmem_low_pages(swiotlbsize); - swiotlb_init_with_tbl(octeon_swiotlb, swiotlb_nslabs, 1); + if (swiotlb_init_with_tbl(octeon_swiotlb, swiotlb_nslabs, 1) == -ENOMEM) + panic("Cannot allocate SWIOTLB buffer"); mips_dma_map_ops = &octeon_linear_dma_map_ops.dma_map_ops; } @@ -309,8 +326,8 @@ void __init plat_swiotlb_setup(void) #ifdef CONFIG_PCI static struct octeon_dma_map_ops _octeon_pci_dma_map_ops = { .dma_map_ops = { - .alloc_coherent = octeon_dma_alloc_coherent, - .free_coherent = octeon_dma_free_coherent, + .alloc = octeon_dma_alloc_coherent, + .free = octeon_dma_free_coherent, .map_page = octeon_dma_map_page, .unmap_page = swiotlb_unmap_page, .map_sg = octeon_dma_map_sg, @@ -329,6 +346,10 @@ struct dma_map_ops *octeon_pci_dma_map_ops; void __init octeon_pci_dma_init(void) { switch (octeon_dma_bar_type) { + case OCTEON_DMA_BAR_TYPE_PCIE2: + _octeon_pci_dma_map_ops.phys_to_dma = octeon_gen2_phys_to_dma; + _octeon_pci_dma_map_ops.dma_to_phys = octeon_gen2_dma_to_phys; + break; case OCTEON_DMA_BAR_TYPE_PCIE: _octeon_pci_dma_map_ops.phys_to_dma = octeon_gen1_phys_to_dma; _octeon_pci_dma_map_ops.dma_to_phys = octeon_gen1_dma_to_phys; |