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board/freescale/common/cds_pci_ft.c: Fix rotate wrong cells in interrupt-map property

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For linux 3.x, the size of each item in interrupt-map property is 9 not 7.
Don't use the static value and calculate the size with following cells:
	PCI #address-cells, PCI #interrupt-cells,
	PIC address, PIC #address-cells, PIC #interrupt-cells.

Signed-off-by: Bin Jiang <bin.jiang@windriver.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Jiang Bin 2012-11-19 22:31:24 +00:00 committed by Andy Fleming
parent 63216de134
commit acac075b94
1 changed files with 23 additions and 3 deletions
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26
board/freescale/common/cds_pci_ft.c
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@ -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;
}
}
}