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authorKumar Gala <galak@kernel.crashing.org>2007-06-25 18:09:42 (GMT)
committerKumar Gala <galak@kernel.crashing.org>2007-06-29 06:58:13 (GMT)
commit5ab65ecdaffd85753e7ad957622afcd709a39deb (patch)
tree1b26f47f7126a7939ac2f9ce1c386bb3c8892b56
parent2a5ccbc5bb471c10b58ea85ac463e70faead1c8a (diff)
downloadlinux-fsl-qoriq-5ab65ecdaffd85753e7ad957622afcd709a39deb.tar.xz
[POWERPC] Added self_busno to indicate which bus number the PHB is
Added self_busno to pci_controller and indirect PCI ops to be set by board code to indicate which bus number to use when talking to the PHB. By default we use zero since the majority of controllers that have implicit mechanisms to talk to the PHBs use a bus number of zero. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r--arch/powerpc/sysdev/indirect_pci.c12
-rw-r--r--include/asm-ppc/pci-bridge.h1
2 files changed, 11 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/indirect_pci.c b/arch/powerpc/sysdev/indirect_pci.c
index 3dedf8f..d490e71 100644
--- a/arch/powerpc/sysdev/indirect_pci.c
+++ b/arch/powerpc/sysdev/indirect_pci.c
@@ -33,6 +33,7 @@ indirect_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
struct pci_controller *hose = bus->sysdata;
volatile void __iomem *cfg_data;
u8 cfg_type = 0;
+ u32 bus_no;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
@@ -42,8 +43,11 @@ indirect_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
if (bus->number != hose->first_busno)
cfg_type = 1;
+ bus_no = (bus->number == hose->first_busno) ?
+ hose->self_busno : bus->number - hose->bus_offset;
+
PCI_CFG_OUT(hose->cfg_addr,
- (0x80000000 | ((bus->number - hose->bus_offset) << 16)
+ (0x80000000 | (bus_no << 16)
| (devfn << 8) | ((offset & 0xfc) | cfg_type)));
/*
@@ -72,6 +76,7 @@ indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
struct pci_controller *hose = bus->sysdata;
volatile void __iomem *cfg_data;
u8 cfg_type = 0;
+ u32 bus_no;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
@@ -81,8 +86,11 @@ indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
if (bus->number != hose->first_busno)
cfg_type = 1;
+ bus_no = (bus->number == hose->first_busno) ?
+ hose->self_busno : bus->number - hose->bus_offset;
+
PCI_CFG_OUT(hose->cfg_addr,
- (0x80000000 | ((bus->number - hose->bus_offset) << 16)
+ (0x80000000 | (bus_no << 16)
| (devfn << 8) | ((offset & 0xfc) | cfg_type)));
/*
diff --git a/include/asm-ppc/pci-bridge.h b/include/asm-ppc/pci-bridge.h
index 4d35b84..2c2abda 100644
--- a/include/asm-ppc/pci-bridge.h
+++ b/include/asm-ppc/pci-bridge.h
@@ -47,6 +47,7 @@ struct pci_controller {
int first_busno;
int last_busno;
+ int self_busno;
int bus_offset;
void __iomem *io_base_virt;