powerpc/pci: Pull ppc32 PCI features into common
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@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 725ea91..8f84a9a 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1617,3 +1617,74 @@
(unsigned long)hose->io_base_virt - _IO_BASE);
}
+
+/*
+ * 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 1e807fe..8cf15d9 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -469,75 +469,4 @@
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);
-}