sh: Fix up early PCI PERR/SERR IRQ handling.

This adds support for handling early PERR/SERR triggering in between
controller registration and the initial bus scan. Buggy cards end up
asserting these as soon as the M66EN scan is undertaken, resulting in
an early crash.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 6d762cca2312..1042f7f0a48b 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -41,6 +41,18 @@ extern int register_pci_controller(struct pci_channel *hose);
 extern void pcibios_report_status(unsigned int status_mask, int warn);
 
 /* arch/sh/drivers/pci/common.c */
+extern int early_read_config_byte(struct pci_channel *hose, int top_bus,
+                                  int bus, int devfn, int offset, u8 *value);
+extern int early_read_config_word(struct pci_channel *hose, int top_bus,
+                                  int bus, int devfn, int offset, u16 *value);
+extern int early_read_config_dword(struct pci_channel *hose, int top_bus,
+                                   int bus, int devfn, int offset, u32 *value);
+extern int early_write_config_byte(struct pci_channel *hose, int top_bus,
+                                   int bus, int devfn, int offset, u8 value);
+extern int early_write_config_word(struct pci_channel *hose, int top_bus,
+                                   int bus, int devfn, int offset, u16 value);
+extern int early_write_config_dword(struct pci_channel *hose, int top_bus,
+                                    int bus, int devfn, int offset, u32 value);
 extern void pcibios_enable_timers(struct pci_channel *hose);
 extern unsigned int pcibios_handle_status_errors(unsigned long addr,
                                  unsigned int status, struct pci_channel *hose);