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Commit 8f60774a authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files

[PATCH] x86: Move direct PCI scanning functions out of line 



Saves about 200 bytes of code space.

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent f157cbb1

arch/i386/pci/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -11,4 +11,4 @@ pci-y += legacy.o irq.o 
pci-$(CONFIG_X86_VISWS)		:= visws.o fixup.o

pci-$(CONFIG_X86_NUMAQ)		:= numa.o irq.o



obj-y				+= $(pci-y) common.o
 
obj-y				+= $(pci-y) common.o early.o

arch/i386/pci/early.c

0 → 100644
+44 −0
Original line number Diff line number Diff line 
#include <linux/kernel.h>

#include <asm/pci-direct.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...)



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);

	if (v != 0xffffffff)

		PDprintk("%x reading 4 from %x: %x\n", slot, offset, v);

	return v;

}



u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)

{

	u8 v;

	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

	v = inb(0xcfc + (offset&3));

	PDprintk("%x reading 1 from %x: %x\n", slot, offset, v);

	return v;

}



u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)

{

	u16 v;

	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

	v = inw(0xcfc + (offset&2));

	PDprintk("%x reading 2 from %x: %x\n", slot, offset, v);

	return v;

}



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);

}

arch/x86_64/pci/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ obj-y := i386.o 
obj-$(CONFIG_PCI_DIRECT)+= direct.o

obj-y		+= fixup.o init.o

obj-$(CONFIG_ACPI)	+= acpi.o

obj-y			+= legacy.o irq.o common.o

obj-y			+= legacy.o irq.o common.o early.o

# mmconfig has a 64bit special

obj-$(CONFIG_PCI_MMCONFIG) += mmconfig.o direct.o
@@ -23,3 +23,4 @@ common-y += ../../i386/pci/common.o 
fixup-y  += ../../i386/pci/fixup.o

i386-y  += ../../i386/pci/i386.o

init-y += ../../i386/pci/init.o

early-y += ../../i386/pci/early.o

include/asm-x86_64/pci-direct.h

+4 −38
Original line number Diff line number Diff line
@@ -2,47 +2,13 @@ 
#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); 

	if (v != 0xffffffff)

		PDprintk("%x reading 4 from %x: %x\n", slot, offset, v);

	return v;

}



static inline u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)

{

	u8 v; 

	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

	v = inb(0xcfc + (offset&3)); 

	PDprintk("%x reading 1 from %x: %x\n", slot, offset, v);

	return v;

}



static inline u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)

{

	u16 v; 

	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

	v = inw(0xcfc + (offset&2)); 

	PDprintk("%x reading 2 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); 

}

extern u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset);

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);



#endif