[PATCH] powerpc/pci: Pull ppc32 PCI features into common
Kumar Gala
galak at kernel.crashing.org
Wed Aug 26 12:20:45 EST 2009
Some of the PCI features we have in ppc32 we will need on ppc64
platforms in the future. These include support for:
* ppc_md.pci_exclude_device
* indirect config cycles
* early config cycles
We also simplified the logic in fake_pci_bus() to assume it will always
get a valid pci_controller. Since all current callers seem to pass it
one.
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
arch/powerpc/include/asm/machdep.h | 6 +-
arch/powerpc/include/asm/pci-bridge.h | 35 +++++++---------
arch/powerpc/kernel/pci-common.c | 70 ++++++++++++++++++++++++++++++++
arch/powerpc/kernel/pci_32.c | 71 ---------------------------------
4 files changed, 89 insertions(+), 93 deletions(-)
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 11d1fc3..9efa2be 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -209,14 +209,14 @@ struct machdep_calls {
/*
* optional PCI "hooks"
*/
- /* Called in indirect_* to avoid touching devices */
- int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
-
/* Called at then very end of pcibios_init() */
void (*pcibios_after_init)(void);
#endif /* CONFIG_PPC32 */
+ /* Called in indirect_* to avoid touching devices */
+ int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
+
/* Called after PPC generic resource fixup to perform
machine specific fixups */
void (*pcibios_fixup_resources)(struct pci_dev *);
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 4c61fa0..e074420 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -77,9 +77,7 @@ struct pci_controller {
int first_busno;
int last_busno;
-#ifndef CONFIG_PPC64
int self_busno;
-#endif
void __iomem *io_base_virt;
#ifdef CONFIG_PPC64
@@ -104,7 +102,6 @@ struct pci_controller {
unsigned int __iomem *cfg_addr;
void __iomem *cfg_data;
-#ifndef CONFIG_PPC64
/*
* Used for variants of PCI indirect handling and possible quirks:
* SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1
@@ -128,7 +125,6 @@ struct pci_controller {
#define PPC_INDIRECT_TYPE_BIG_ENDIAN 0x00000010
#define PPC_INDIRECT_TYPE_BROKEN_MRM 0x00000020
u32 indirect_type;
-#endif /* !CONFIG_PPC64 */
/* Currently, we limit ourselves to 1 IO range and 3 mem
* ranges since the common pci_bus structure can't handle more
*/
@@ -146,21 +142,6 @@ struct pci_controller {
#endif /* CONFIG_PPC64 */
};
-#ifndef CONFIG_PPC64
-
-static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
-{
- return bus->sysdata;
-}
-
-static inline int isa_vaddr_is_ioport(void __iomem *address)
-{
- /* No specific ISA handling on ppc32 at this stage, it
- * all goes through PCI
- */
- return 0;
-}
-
/* These are used for config access before all the PCI probing
has been done. */
extern int early_read_config_byte(struct pci_controller *hose, int bus,
@@ -182,6 +163,22 @@ extern int early_find_capability(struct pci_controller *hose, int bus,
extern void setup_indirect_pci(struct pci_controller* hose,
resource_size_t cfg_addr,
resource_size_t cfg_data, u32 flags);
+
+#ifndef CONFIG_PPC64
+
+static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
+{
+ return bus->sysdata;
+}
+
+static inline int isa_vaddr_is_ioport(void __iomem *address)
+{
+ /* No specific ISA handling on ppc32 at this stage, it
+ * all goes through PCI
+ */
+ return 0;
+}
+
#else /* CONFIG_PPC64 */
/*
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 5a56e97..6357f2b 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1626,3 +1626,73 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
}
+/*
+ * Null PCI config access functions, for the case when we can't
+ * find a hose.
+ */
+#define NULL_PCI_OP(rw, size, type) \
+static int \
+null_##rw##_config_##size(struct pci_dev *dev, int offset, type val) \
+{ \
+ return PCIBIOS_DEVICE_NOT_FOUND; \
+}
+
+static int
+null_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
+ int len, u32 *val)
+{
+ return PCIBIOS_DEVICE_NOT_FOUND;
+}
+
+static int
+null_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
+ int len, u32 val)
+{
+ return PCIBIOS_DEVICE_NOT_FOUND;
+}
+
+static struct pci_ops null_pci_ops =
+{
+ .read = null_read_config,
+ .write = null_write_config,
+};
+
+/*
+ * These functions are used early on before PCI scanning is done
+ * and all of the pci_dev and pci_bus structures have been created.
+ */
+static struct pci_bus *
+fake_pci_bus(struct pci_controller *hose, int busnr)
+{
+ static struct pci_bus bus;
+
+ if (hose == 0) {
+ printk(KERN_ERR "Can't find hose for PCI bus %d!\n", busnr);
+ }
+ bus.number = busnr;
+ bus.sysdata = hose;
+ bus.ops = hose? hose->ops: &null_pci_ops;
+ return &bus;
+}
+
+#define EARLY_PCI_OP(rw, size, type) \
+int early_##rw##_config_##size(struct pci_controller *hose, int bus, \
+ int devfn, int offset, type value) \
+{ \
+ return pci_bus_##rw##_config_##size(fake_pci_bus(hose, bus), \
+ devfn, offset, value); \
+}
+
+EARLY_PCI_OP(read, byte, u8 *)
+EARLY_PCI_OP(read, word, u16 *)
+EARLY_PCI_OP(read, dword, u32 *)
+EARLY_PCI_OP(write, byte, u8)
+EARLY_PCI_OP(write, word, u16)
+EARLY_PCI_OP(write, dword, u32)
+
+extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
+int early_find_capability(struct pci_controller *hose, int bus, int devfn,
+ int cap)
+{
+ return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
+}
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 3ae1c66..ebe9ef9 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -478,75 +478,4 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
return result;
}
-/*
- * Null PCI config access functions, for the case when we can't
- * find a hose.
- */
-#define NULL_PCI_OP(rw, size, type) \
-static int \
-null_##rw##_config_##size(struct pci_dev *dev, int offset, type val) \
-{ \
- return PCIBIOS_DEVICE_NOT_FOUND; \
-}
-
-static int
-null_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
- int len, u32 *val)
-{
- return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static int
-null_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
- int len, u32 val)
-{
- return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static struct pci_ops null_pci_ops =
-{
- .read = null_read_config,
- .write = null_write_config,
-};
-/*
- * These functions are used early on before PCI scanning is done
- * and all of the pci_dev and pci_bus structures have been created.
- */
-static struct pci_bus *
-fake_pci_bus(struct pci_controller *hose, int busnr)
-{
- static struct pci_bus bus;
-
- if (hose == 0) {
- hose = pci_bus_to_hose(busnr);
- if (hose == 0)
- printk(KERN_ERR "Can't find hose for PCI bus %d!\n", busnr);
- }
- bus.number = busnr;
- bus.sysdata = hose;
- bus.ops = hose? hose->ops: &null_pci_ops;
- return &bus;
-}
-
-#define EARLY_PCI_OP(rw, size, type) \
-int early_##rw##_config_##size(struct pci_controller *hose, int bus, \
- int devfn, int offset, type value) \
-{ \
- return pci_bus_##rw##_config_##size(fake_pci_bus(hose, bus), \
- devfn, offset, value); \
-}
-
-EARLY_PCI_OP(read, byte, u8 *)
-EARLY_PCI_OP(read, word, u16 *)
-EARLY_PCI_OP(read, dword, u32 *)
-EARLY_PCI_OP(write, byte, u8)
-EARLY_PCI_OP(write, word, u16)
-EARLY_PCI_OP(write, dword, u32)
-
-extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
-int early_find_capability(struct pci_controller *hose, int bus, int devfn,
- int cap)
-{
- return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
-}
--
1.6.0.6
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