ARM: renesas: Update Gen3 PCIe dma-ranges before boot

Update "dma-ranges" DT property of all PCIe controllers in the system
with the up-to-date DRAM layout. This allows the PCIe controller take
full advantage of all the available DRAM.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

diff --git a/arch/arm/mach-rmobile/Kconfig b/arch/arm/mach-rmobile/Kconfig
index aafeb35..52ab891 100644 (file)
--- a/arch/arm/mach-rmobile/Kconfig
+++ b/arch/arm/mach-rmobile/Kconfig
@@ -21,6 +21,7 @@ config RCAR_GEN3
        imply CMD_GPT
        imply CMD_UUID
        imply CMD_MMC_SWRITE if MMC
+       imply OF_BOARD_SETUP if PCI
        imply SUPPORT_EMMC_RPMB if MMC
        imply SPL
        imply SPL_BOARD_INIT

diff --git a/board/renesas/rcar-common/common.c b/board/renesas/rcar-common/common.c
index 292867e..37f8a46 100644 (file)
--- a/board/renesas/rcar-common/common.c
+++ b/board/renesas/rcar-common/common.c
@@ -8,6 +8,8 @@
  */
 
 #include <common.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
 #include <asm/arch/rmobile.h>
 
 #ifdef CONFIG_RCAR_GEN3
@@ -46,4 +48,51 @@ int dram_init_banksize(void)
 
        return 0;
 }
+
+#if CONFIG_IS_ENABLED(OF_BOARD_SETUP) && CONFIG_IS_ENABLED(PCI)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+       struct udevice *dev;
+       struct uclass *uc;
+       fdt_addr_t regs_addr;
+       int i, off, ret;
+
+       ret = uclass_get(UCLASS_PCI, &uc);
+       if (ret)
+               return ret;
+
+       uclass_foreach_dev(dev, uc) {
+               struct pci_controller hose = { 0 };
+
+               for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+                       if (hose.region_count == MAX_PCI_REGIONS) {
+                               printf("maximum number of regions parsed, aborting\n");
+                               break;
+                       }
+
+                       if (bd->bi_dram[i].size) {
+                               pci_set_region(&hose.regions[hose.region_count++],
+                                              bd->bi_dram[i].start,
+                                              bd->bi_dram[i].start,
+                                              bd->bi_dram[i].size,
+                                              PCI_REGION_MEM |
+                                              PCI_REGION_PREFETCH |
+                                              PCI_REGION_SYS_MEMORY);
+                       }
+               }
+
+               regs_addr = devfdt_get_addr_index(dev, 0);
+               off = fdt_node_offset_by_compat_reg(blob,
+                               "renesas,pcie-rcar-gen3", regs_addr);
+               if (off < 0) {
+                       printf("Failed to find PCIe node@%llx\n", regs_addr);
+                       return off;
+               }
+
+               fdt_pci_dma_ranges(blob, off, &hose);
+       }
+
+       return 0;
+}
+#endif
 #endif