diff options
| -rw-r--r-- | cmd/pci.c | 83 |
1 files changed, 83 insertions, 0 deletions
@@ -92,6 +92,77 @@ static void pci_show_regs(pci_dev_t dev, struct pci_reg_info *regs) } #endif +#ifdef CONFIG_DM_PCI +int pci_bar_show(struct udevice *dev) +{ + u8 header_type; + int bar_cnt, bar_id, mem_type; + bool is_64, is_io; + u32 base_low, base_high; + u32 size_low, size_high; + u64 base, size; + u32 reg_addr; + int prefetchable; + + dm_pci_read_config8(dev, PCI_HEADER_TYPE, &header_type); + + if (header_type == PCI_HEADER_TYPE_CARDBUS) { + printf("CardBus doesn't support BARs\n"); + return -ENOSYS; + } + + bar_cnt = (header_type == PCI_HEADER_TYPE_NORMAL) ? 6 : 2; + + printf("ID Base Size Width Type\n"); + printf("----------------------------------------------------------\n"); + + bar_id = 0; + reg_addr = PCI_BASE_ADDRESS_0; + while (bar_cnt) { + dm_pci_read_config32(dev, reg_addr, &base_low); + dm_pci_write_config32(dev, reg_addr, 0xffffffff); + dm_pci_read_config32(dev, reg_addr, &size_low); + dm_pci_write_config32(dev, reg_addr, base_low); + reg_addr += 4; + + base = base_low & ~0xf; + size = size_low & ~0xf; + base_high = 0x0; + size_high = 0xffffffff; + is_64 = 0; + prefetchable = base_low & PCI_BASE_ADDRESS_MEM_PREFETCH; + is_io = base_low & PCI_BASE_ADDRESS_SPACE_IO; + mem_type = base_low & PCI_BASE_ADDRESS_MEM_TYPE_MASK; + + if (mem_type == PCI_BASE_ADDRESS_MEM_TYPE_64) { + dm_pci_read_config32(dev, reg_addr, &base_high); + dm_pci_write_config32(dev, reg_addr, 0xffffffff); + dm_pci_read_config32(dev, reg_addr, &size_high); + dm_pci_write_config32(dev, reg_addr, base_high); + bar_cnt--; + reg_addr += 4; + is_64 = 1; + } + + base = base | ((u64)base_high << 32); + size = size | ((u64)size_high << 32); + + if ((!is_64 && size_low) || (is_64 && size)) { + size = ~size + 1; + printf(" %d %#016llx %#016llx %d %s %s\n", + bar_id, base, size, is_64 ? 64 : 32, + is_io ? "I/O" : "MEM", + prefetchable ? "Prefetchable" : ""); + } + + bar_id++; + bar_cnt--; + } + + return 0; +} +#endif + static struct pci_reg_info regs_start[] = { { "vendor ID", PCI_SIZE_16, PCI_VENDOR_ID }, { "device ID", PCI_SIZE_16, PCI_DEVICE_ID }, @@ -573,6 +644,9 @@ static int do_pci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (argc > 4) value = simple_strtoul(argv[4], NULL, 16); case 'h': /* header */ +#ifdef CONFIG_DM_PCI + case 'b': /* bars */ +#endif if (argc < 3) goto usage; if ((bdf = get_pci_dev(argv[2])) == -1) @@ -641,6 +715,11 @@ static int do_pci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) ret = pci_cfg_write(dev, addr, size, value); #endif break; +#ifdef CONFIG_DM_PCI + + case 'b': /* bars */ + return pci_bar_show(dev); +#endif default: ret = CMD_RET_USAGE; break; @@ -663,6 +742,10 @@ static char pci_help_text[] = #endif "pci header b.d.f\n" " - show header of PCI device 'bus.device.function'\n" +#ifdef CONFIG_DM_PCI + "pci bar b.d.f\n" + " - show BARs base and size for device b.d.f'\n" +#endif "pci display[.b, .w, .l] b.d.f [address] [# of objects]\n" " - display PCI configuration space (CFG)\n" "pci next[.b, .w, .l] b.d.f address\n" |