diff options
Diffstat (limited to 'arch/mips/cavium-octeon/dma-octeon.c')
| -rw-r--r-- | arch/mips/cavium-octeon/dma-octeon.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octeon/dma-octeon.c index be531ec1f206..d22b5a2d64f4 100644 --- a/arch/mips/cavium-octeon/dma-octeon.c +++ b/arch/mips/cavium-octeon/dma-octeon.c @@ -99,13 +99,16 @@ dma_addr_t octeon_map_dma_mem(struct device *dev, void *ptr, size_t size) panic("dma_map_single: " "Attempt to map illegal memory address 0x%llx\n", physical); - else if ((physical + size >= - (4ull<<30) - (OCTEON_PCI_BAR1_HOLE_SIZE<<20)) - && physical < (4ull<<30)) - pr_warning("dma_map_single: Warning: " - "Mapping memory address that might " - "conflict with devices 0x%llx-0x%llx\n", - physical, physical+size-1); + else if (physical >= CVMX_PCIE_BAR1_PHYS_BASE && + physical + size < (CVMX_PCIE_BAR1_PHYS_BASE + CVMX_PCIE_BAR1_PHYS_SIZE)) { + result = physical - CVMX_PCIE_BAR1_PHYS_BASE + CVMX_PCIE_BAR1_RC_BASE; + + if (((result+size-1) & dma_mask) != result+size-1) + panic("dma_map_single: Attempt to map address 0x%llx-0x%llx, which can't be accessed according to the dma mask 0x%llx\n", + physical, physical+size-1, dma_mask); + goto done; + } + /* The 2nd 256MB is mapped at 256<<20 instead of 0x410000000 */ if ((physical >= 0x410000000ull) && physical < 0x420000000ull) result = physical - 0x400000000ull; |