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

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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>
This commit is contained in:
Marek Vasut 2019-07-09 01:46:35 +02:00 committed by Marek Vasut
parent 3a8cd17d0e
commit b3db7be4e3
2 changed files with 50 additions and 0 deletions
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1
arch/arm/mach-rmobile/Kconfig
View File

@ -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

49
board/renesas/rcar-common/common.c
View File

@ -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