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Commit 3444f5ec authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: pci: Tidy up the dreamcast PCI support. 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 0db38cea

arch/sh/drivers/pci/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -12,7 +12,8 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7780) += pci-sh7780.o ops-sh4.o 
obj-$(CONFIG_CPU_SUBTYPE_SH7785)	+= pci-sh7780.o ops-sh4.o

obj-$(CONFIG_CPU_SH5)			+= pci-sh5.o ops-sh5.o



obj-$(CONFIG_SH_DREAMCAST)		+= ops-dreamcast.o fixups-dreamcast.o

obj-$(CONFIG_SH_DREAMCAST)		+= ops-dreamcast.o fixups-dreamcast.o \

					   pci-dreamcast.o

obj-$(CONFIG_SH_SECUREEDGE5410)		+= ops-snapgear.o

obj-$(CONFIG_SH_RTS7751R2D)		+= ops-rts7751r2d.o fixups-rts7751r2d.o

obj-$(CONFIG_SH_SH03)			+= ops-sh03.o fixups-sh03.o

arch/sh/drivers/pci/ops-dreamcast.c

+10 −88
Original line number Diff line number Diff line 
/*

 * arch/sh/drivers/pci/ops-dreamcast.c

 *

 * PCI operations for the Sega Dreamcast

 *

 * Copyright (C) 2001, 2002  M. R. Brown

 * Copyright (C) 2002, 2003  Paul Mundt

 *

 * This file originally bore the message (with enclosed-$):

 *	Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp

 *	Dreamcast PCI: Supports SEGA Broadband Adaptor only.

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.
@@ -23,25 +17,10 @@ 
#include <linux/irq.h>

#include <linux/pci.h>

#include <linux/module.h>



#include <asm/io.h>

#include <asm/irq.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <mach/pci.h>



static struct resource gapspci_io_resource = {

	.name	= "GAPSPCI IO",

	.start	= GAPSPCI_BBA_CONFIG,

	.end	= GAPSPCI_BBA_CONFIG + GAPSPCI_BBA_CONFIG_SIZE - 1,

	.flags	= IORESOURCE_IO,

};



static struct resource gapspci_mem_resource = {

	.name	= "GAPSPCI mem",

	.start	= GAPSPCI_DMA_BASE,

	.end	= GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1,

	.flags	= IORESOURCE_MEM,

};



/*

 * The !gapspci_config_access case really shouldn't happen, ever, unless

 * someone implicitly messes around with the last devfn value.. otherwise we
@@ -98,64 +77,7 @@ static int gapspci_write(struct pci_bus *bus, unsigned int devfn, int where, int 
        return PCIBIOS_SUCCESSFUL;

}



static struct pci_ops gapspci_pci_ops = {

struct pci_ops gapspci_pci_ops = {

	.read	= gapspci_read,

	.write	= gapspci_write,

};
 


/*

 * gapspci init

 */



static int __init gapspci_init(struct pci_channel *chan)

{

	char idbuf[16];

	int i;



	/*

	 * FIXME: All of this wants documenting to some degree,

	 * even some basic register definitions would be nice.

	 *

	 * I haven't seen anything this ugly since.. maple.

	 */



	for (i=0; i<16; i++)

		idbuf[i] = inb(GAPSPCI_REGS+i);



	if (strncmp(idbuf, "GAPSPCI_BRIDGE_2", 16))

		return -ENODEV;



	outl(0x5a14a501, GAPSPCI_REGS+0x18);



	for (i=0; i<1000000; i++)

		;



	if (inl(GAPSPCI_REGS+0x18) != 1)

		return -EINVAL;



	outl(0x01000000, GAPSPCI_REGS+0x20);

	outl(0x01000000, GAPSPCI_REGS+0x24);



	outl(GAPSPCI_DMA_BASE, GAPSPCI_REGS+0x28);

	outl(GAPSPCI_DMA_BASE+GAPSPCI_DMA_SIZE, GAPSPCI_REGS+0x2c);



	outl(1, GAPSPCI_REGS+0x14);

	outl(1, GAPSPCI_REGS+0x34);



	/* Setting Broadband Adapter */

	outw(0xf900, GAPSPCI_BBA_CONFIG+0x06);

	outl(0x00000000, GAPSPCI_BBA_CONFIG+0x30);

	outb(0x00, GAPSPCI_BBA_CONFIG+0x3c);

	outb(0xf0, GAPSPCI_BBA_CONFIG+0x0d);

	outw(0x0006, GAPSPCI_BBA_CONFIG+0x04);

	outl(0x00002001, GAPSPCI_BBA_CONFIG+0x10);

	outl(0x01000000, GAPSPCI_BBA_CONFIG+0x14);



	return 0;

}



struct pci_channel board_pci_channels[] = {

	{ gapspci_init, &gapspci_pci_ops, &gapspci_io_resource,

	  &gapspci_mem_resource, 0, 1 },

	{ 0, }

};

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

0 → 100644
+105 −0
Original line number Diff line number Diff line 
/*

 * PCI support for the Sega Dreamcast

 *

 * Copyright (C) 2001, 2002  M. R. Brown

 * Copyright (C) 2002, 2003  Paul Mundt

 *

 * This file originally bore the message (with enclosed-$):

 *	Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp

 *	Dreamcast PCI: Supports SEGA Broadband Adaptor only.

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 */



#include <linux/sched.h>

#include <linux/kernel.h>

#include <linux/param.h>

#include <linux/interrupt.h>

#include <linux/init.h>

#include <linux/irq.h>

#include <linux/pci.h>

#include <linux/module.h>



#include <asm/io.h>

#include <asm/irq.h>

#include <mach/pci.h>



static struct resource gapspci_io_resource = {

	.name	= "GAPSPCI IO",

	.start	= GAPSPCI_BBA_CONFIG,

	.end	= GAPSPCI_BBA_CONFIG + GAPSPCI_BBA_CONFIG_SIZE - 1,

	.flags	= IORESOURCE_IO,

};



static struct resource gapspci_mem_resource = {

	.name	= "GAPSPCI mem",

	.start	= GAPSPCI_DMA_BASE,

	.end	= GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1,

	.flags	= IORESOURCE_MEM,

};



/*

 * gapspci init

 */



static int __init gapspci_init(struct pci_channel *chan)

{

	char idbuf[16];

	int i;



	/*

	 * FIXME: All of this wants documenting to some degree,

	 * even some basic register definitions would be nice.

	 *

	 * I haven't seen anything this ugly since.. maple.

	 */



	for (i=0; i<16; i++)

		idbuf[i] = inb(GAPSPCI_REGS+i);



	if (strncmp(idbuf, "GAPSPCI_BRIDGE_2", 16))

		return -ENODEV;



	outl(0x5a14a501, GAPSPCI_REGS+0x18);



	for (i=0; i<1000000; i++)

		cpu_relax();



	if (inl(GAPSPCI_REGS+0x18) != 1)

		return -EINVAL;



	outl(0x01000000, GAPSPCI_REGS+0x20);

	outl(0x01000000, GAPSPCI_REGS+0x24);



	outl(GAPSPCI_DMA_BASE, GAPSPCI_REGS+0x28);

	outl(GAPSPCI_DMA_BASE+GAPSPCI_DMA_SIZE, GAPSPCI_REGS+0x2c);



	outl(1, GAPSPCI_REGS+0x14);

	outl(1, GAPSPCI_REGS+0x34);



	/* Setting Broadband Adapter */

	outw(0xf900, GAPSPCI_BBA_CONFIG+0x06);

	outl(0x00000000, GAPSPCI_BBA_CONFIG+0x30);

	outb(0x00, GAPSPCI_BBA_CONFIG+0x3c);

	outb(0xf0, GAPSPCI_BBA_CONFIG+0x0d);

	outw(0x0006, GAPSPCI_BBA_CONFIG+0x04);

	outl(0x00002001, GAPSPCI_BBA_CONFIG+0x10);

	outl(0x01000000, GAPSPCI_BBA_CONFIG+0x14);



	return 0;

}



struct pci_channel board_pci_channels[] = {

	{

		.init		= gapspci_init,

		.pci_ops	= &gapspci_pci_ops,

		.io_resource	= &gapspci_io_resource,

		.mem_resource	= &gapspci_mem_resource,

		.first_devfn	= 0,

		.last_devfn	= 1,

	}, {

		.init		= NULL,

	}

};

arch/sh/include/mach-dreamcast/mach/pci.h

+2 −0
Original line number Diff line number Diff line
@@ -21,5 +21,7 @@ 


#define	GAPSPCI_IRQ		HW_EVENT_EXTERNAL



extern struct pci_ops gapspci_pci_ops;



#endif /* __ASM_SH_DREAMCAST_PCI_H */