pci: tegra: clip RAM size to 32-bits
Tegra peripherals can generally access a 32-bit physical address space,
and I believe this applies to PCIe. Clip the PCI region that refers to
DRAM so it fits into 32-bits to avoid issues.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/drivers/pci/pci_tegra.c b/drivers/pci/pci_tegra.c
index ebb959f..357e779 100644
--- a/drivers/pci/pci_tegra.c
+++ b/drivers/pci/pci_tegra.c
@@ -997,6 +997,14 @@
static int process_nodes(const void *fdt, int nodes[], unsigned int count)
{
unsigned int i;
+ uint64_t dram_end;
+ uint32_t pci_dram_size;
+
+ /* Clip PCI-accessible DRAM to 32-bits */
+ dram_end = ((uint64_t)NV_PA_SDRAM_BASE) + gd->ram_size;
+ if (dram_end > 0x100000000)
+ dram_end = 0x100000000;
+ pci_dram_size = dram_end - NV_PA_SDRAM_BASE;
for (i = 0; i < count; i++) {
const struct tegra_pcie_soc *soc;
@@ -1069,7 +1077,7 @@
pcie->hose.last_busno = 0;
pci_set_region(&pcie->hose.regions[0], NV_PA_SDRAM_BASE,
- NV_PA_SDRAM_BASE, gd->ram_size,
+ NV_PA_SDRAM_BASE, pci_dram_size,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
pci_set_region(&pcie->hose.regions[1], pcie->io.start,