Add write_pci_config_byte() to direct PCI access routines
Signed-off-by: Suresh Siddha <[email protected]>
---
diff --git a/arch/i386/pci/early.c b/arch/i386/pci/early.c
index 713d6c8..42df4b6 100644
--- a/arch/i386/pci/early.c
+++ b/arch/i386/pci/early.c
@@ -45,6 +45,13 @@ void write_pci_config(u8 bus, u8 slot, u
outl(val, 0xcfc);
}
+void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
+{
+ PDprintk("%x writing to %x: %x\n", slot, offset, val);
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ outb(val, 0xcfc);
+}
+
int early_pci_allowed(void)
{
return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) ==
diff --git a/include/asm-x86_64/pci-direct.h b/include/asm-x86_64/pci-direct.h
index eba9cb4..6823fa4 100644
--- a/include/asm-x86_64/pci-direct.h
+++ b/include/asm-x86_64/pci-direct.h
@@ -10,6 +10,7 @@ extern u32 read_pci_config(u8 bus, u8 sl
extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset);
extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset);
extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val);
+extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val);
extern int early_pci_allowed(void);
-
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