diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/pci/pci-uclass.c | 9 |
2 files changed, 19 insertions, 3 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 517cf956ea..c49cb6eac9 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -54,6 +54,19 @@ config PCI_REGION_MULTI_ENTRY region type. This helps to add support for SoC's like OcteonTX/TX2 where every peripheral is on the PCI bus. +config PCI_MAP_SYSTEM_MEMORY + bool "Map local system memory from a virtual base address" + depends on PCI || DM_PCI + depends on MIPS + default n + help + Say Y if base address of system memory is being used as a virtual address + instead of a physical address (e.g. on MIPS). The PCI core will then remap + the virtual memory base address to a physical address when adding the PCI + region of type PCI_REGION_SYS_MEMORY. + This should only be required on MIPS where CONFIG_SYS_SDRAM_BASE is still + being used as virtual address. + config PCI_SRIOV bool "Enable Single Root I/O Virtualization support for PCI" depends on PCI || DM_PCI diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index fb12732926..ce2eb5da2c 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -1034,10 +1034,13 @@ static void decode_regions(struct pci_controller *hose, ofnode parent_node, for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) { if (bd->bi_dram[i].size) { + phys_addr_t start = bd->bi_dram[i].start; + + if (IS_ENABLED(CONFIG_PCI_MAP_SYSTEM_MEMORY)) + start = virt_to_phys((void *)(uintptr_t)bd->bi_dram[i].start); + pci_set_region(hose->regions + hose->region_count++, - bd->bi_dram[i].start, - bd->bi_dram[i].start, - bd->bi_dram[i].size, + start, start, bd->bi_dram[i].size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); } } |