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Commit bfc906d8 authored by Thomas Schwinge's avatar Thomas Schwinge Committed by Paul Mundt
Browse files

SH: pci-sh7780: enable big-endian operation. 



If in big-endian mode, switch the PCI bus, too.

Tested on both litte-endian and big-endian sh7785lcr.

Signed-off-by: default avatarThomas Schwinge <thomas@codesourcery.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 49d4bcad

arch/sh/drivers/pci/pci-sh7780.c

+12 −3
Original line number Diff line number Diff line
@@ -21,6 +21,13 @@ 
#include <asm/mmu.h>

#include <asm/sizes.h>



#if defined(CONFIG_CPU_BIG_ENDIAN)

# define PCICR_ENDIANNESS SH4_PCICR_BSWP

#else

# define PCICR_ENDIANNESS 0

#endif





static struct resource sh7785_pci_resources[] = {

	{

		.name	= "PCI IO",
@@ -254,7 +261,7 @@ static int __init sh7780_pci_init(void) 
	__raw_writel(PCIECR_ENBL, PCIECR);



	/* Reset */

	__raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_PRST,

	__raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_PRST | PCICR_ENDIANNESS,

		     chan->reg_base + SH4_PCICR);



	/*
@@ -290,7 +297,8 @@ static int __init sh7780_pci_init(void) 
	 * Now throw it in to register initialization mode and

	 * start the real work.

	 */

	__raw_writel(SH4_PCICR_PREFIX, chan->reg_base + SH4_PCICR);

	__raw_writel(SH4_PCICR_PREFIX | PCICR_ENDIANNESS,

		     chan->reg_base + SH4_PCICR);



	memphys = __pa(memory_start);

	memsize = roundup_pow_of_two(memory_end - memory_start);
@@ -380,7 +388,8 @@ static int __init sh7780_pci_init(void) 
	 * Initialization mode complete, release the control register and

	 * enable round robin mode to stop device overruns/starvation.

	 */

	__raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO,

	__raw_writel(SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO |

		     PCICR_ENDIANNESS,

		     chan->reg_base + SH4_PCICR);



	ret = register_pci_controller(chan);