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-rw-r--r--arch/mips/cavium-octeon/dma-octeon.c17
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 be531ec1f20..d22b5a2d64f 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;