diff options
| -rw-r--r-- | board/freescale/common/cds_pci_ft.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/board/freescale/common/cds_pci_ft.c b/board/freescale/common/cds_pci_ft.c index 8a09f99..32233db 100644 --- a/board/freescale/common/cds_pci_ft.c +++ b/board/freescale/common/cds_pci_ft.c @@ -31,7 +31,8 @@ static void cds_pci_fixup(void *blob) int node; const char *path; int len, slot, i; - u32 *map = NULL; + u32 *map = NULL, *piccells = NULL; + int off, cells; node = fdt_path_offset(blob, "/aliases"); if (node >= 0) { @@ -41,6 +42,25 @@ static void cds_pci_fixup(void *blob) if (node >= 0) { map = fdt_getprop_w(blob, node, "interrupt-map", &len); } + /* Each item in "interrupt-map" property is translated with + * following cells: + * PCI #address-cells, PCI #interrupt-cells, + * PIC address, PIC #address-cells, PIC #interrupt-cells. + */ + cells = fdt_getprop_u32_default(blob, path, "#address-cells", 1); + cells += fdt_getprop_u32_default(blob, path, "#interrupt-cells", 1); + off = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*(map+cells))); + if (off <= 0) + return; + cells += 1; + piccells = (u32 *)fdt_getprop(blob, off, "#address-cells", NULL); + if (piccells == NULL) + return; + cells += *piccells; + piccells = (u32 *)fdt_getprop(blob, off, "#interrupt-cells", NULL); + if (piccells == NULL) + return; + cells += *piccells; } } @@ -49,12 +69,12 @@ static void cds_pci_fixup(void *blob) slot = get_pci_slot(); - for (i=0;i<len;i+=7) { + for (i=0;i<len;i+=cells) { /* We rotate the interrupt pins so that the mapping * changes depending on the slot the carrier card is in. */ map[3] = ((map[3] + slot - 2) % 4) + 1; - map+=7; + map+=cells; } } } |