diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2006-11-11 06:25:06 (GMT) |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-04 09:38:45 (GMT) |
| commit | 6506e7102fd57b138979f131d751014462181202 (patch) | |
| tree | 0f9e974c89027955210c6c338a49d0b0fa4519d1 /arch | |
| parent | e557a1c96c82f4d1a91b5c2e2e0275b5999c297d (diff) | |
| download | linux-fsl-qoriq-6506e7102fd57b138979f131d751014462181202.tar.xz | |
[POWERPC] Resolve the BUID for RTAS PCI config space accesses
The BUID is the first entry of a PCI host bridge "reg" property.
Now that PCI busses can be anywhere in the device-tree, we need to
fully translate the value there to a CPU physical address before
we can use it with RTAS.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/rtas_pci.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c index b4a0de7..2576e12 100644 --- a/arch/powerpc/kernel/rtas_pci.c +++ b/arch/powerpc/kernel/rtas_pci.c @@ -231,32 +231,13 @@ void __init init_pci_config_tokens (void) unsigned long __devinit get_phb_buid (struct device_node *phb) { - int addr_cells; - const unsigned int *buid_vals; - unsigned int len; - unsigned long buid; - - if (ibm_read_pci_config == -1) return 0; + struct resource r; - /* PHB's will always be children of the root node, - * or so it is promised by the current firmware. */ - if (phb->parent == NULL) + if (ibm_read_pci_config == -1) return 0; - if (phb->parent->parent) - return 0; - - buid_vals = get_property(phb, "reg", &len); - if (buid_vals == NULL) + if (of_address_to_resource(phb, 0, &r)) return 0; - - addr_cells = prom_n_addr_cells(phb); - if (addr_cells == 1) { - buid = (unsigned long) buid_vals[0]; - } else { - buid = (((unsigned long)buid_vals[0]) << 32UL) | - (((unsigned long)buid_vals[1]) & 0xffffffff); - } - return buid; + return r.start; } static int phb_set_bus_ranges(struct device_node *dev, |