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authorKumar Gala <galak@kernel.crashing.org>2007-06-26 00:19:48 +0400
committerKumar Gala <galak@kernel.crashing.org>2007-06-29 10:58:20 +0400
commitab0f9ad34d1eb31bb13cc4218d7717f8a85b12ed (patch)
treeaa4110045c5089ca0d498bdb32af29f3dfdf1d1a /arch/powerpc/sysdev/indirect_pci.c
parentdfac6faf8f42d5a9dd6919d7a2a41ef91eb77b4f (diff)
downloadlinux-ab0f9ad34d1eb31bb13cc4218d7717f8a85b12ed.tar.xz
[POWERPC] Added indirect_type to handle variants of PCI ops
The generic PCI config ops indirect support for ppc32 covers only two cases (implicit vs explicit) type 0/1 config cycles via set_cfg_type. Added a indirect_type bit mask to handle other variants. Added support for PCI-e extended registers and moved the cfg_type handling into the bit mask for ARCH=powerpc. We can also use this to handle indirect quirks. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/indirect_pci.c')
-rw-r--r--arch/powerpc/sysdev/indirect_pci.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/indirect_pci.c b/arch/powerpc/sysdev/indirect_pci.c
index efe3cff8dcd1..3a1612253c60 100644
--- a/arch/powerpc/sysdev/indirect_pci.c
+++ b/arch/powerpc/sysdev/indirect_pci.c
@@ -33,22 +33,27 @@ 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;
+ u32 bus_no, reg;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
- if (hose->set_cfg_type)
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_SET_CFG_TYPE)
if (bus->number != hose->first_busno)
cfg_type = 1;
bus_no = (bus->number == hose->first_busno) ?
hose->self_busno : bus->number;
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_EXT_REG)
+ reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
+ else
+ reg = offset & 0xfc;
+
PCI_CFG_OUT(hose->cfg_addr,
(0x80000000 | (bus_no << 16)
- | (devfn << 8) | ((offset & 0xfc) | cfg_type)));
+ | (devfn << 8) | reg | cfg_type));
/*
* Note: the caller has already checked that offset is
@@ -76,22 +81,27 @@ 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;
+ u32 bus_no, reg;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
- if (hose->set_cfg_type)
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_SET_CFG_TYPE)
if (bus->number != hose->first_busno)
cfg_type = 1;
bus_no = (bus->number == hose->first_busno) ?
hose->self_busno : bus->number;
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_EXT_REG)
+ reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
+ else
+ reg = offset & 0xfc;
+
PCI_CFG_OUT(hose->cfg_addr,
(0x80000000 | (bus_no << 16)
- | (devfn << 8) | ((offset & 0xfc) | cfg_type)));
+ | (devfn << 8) | reg | cfg_type));
/*
* Note: the caller has already checked that offset is