patch-2.4.20 linux-2.4.20/include/asm-x86_64/pci-direct.h

• Lines: 30
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-x86_64/pci-direct.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/asm-x86_64/pci-direct.h linux-2.4.20/include/asm-x86_64/pci-direct.h
@@ -0,0 +1,29 @@
+#ifndef ASM_PCI_DIRECT_H
+#define ASM_PCI_DIRECT_H 1
+
+#include <linux/types.h>
+#include <asm/io.h>
+
+/* Direct PCI access. This is used for PCI accesses in early boot before
+   the PCI subsystem works. */ 
+
+#define PDprintk(x...)
+
+static inline u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)
+{
+	u32 v; 
+	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+	v = inl(0xcfc); 
+	PDprintk("%x reading from %x: %x\n", slot, offset, v);
+	return v;
+}
+
+static inline void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,
+				    u32 val)
+{
+	PDprintk("%x writing to %x: %x\n", slot, offset, val); 
+	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+	outl(val, 0xcfc); 
+}
+
+#endif