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sh: pci: Tidy up the dreamcast PCI support. 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-04-20 20:22:05 +09:00
parent 0db38cea69
commit 3444f5ec49
4 changed files with 119 additions and 89 deletions
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3
arch/sh/drivers/pci/Makefile
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@ -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

98
arch/sh/drivers/pci/ops-dreamcast.c
View File

@ -1,15 +1,9 @@
/*
* 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
@ -76,10 +55,10 @@ static int gapspci_read(struct pci_bus *bus, unsigned int devfn, int where, int
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break;
case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break;
case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break;
}
case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break;
case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break;
case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break;
}
return PCIBIOS_SUCCESSFUL;
}
@ -90,72 +69,15 @@ static int gapspci_write(struct pci_bus *bus, unsigned int devfn, int where, int
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break;
case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break;
case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break;
case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break;
case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break;
case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break;
}
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, }
};

105
arch/sh/drivers/pci/pci-dreamcast.c Normal file
View File

@ -0,0 +1,105 @@
/*
* 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,
}
};

2
arch/sh/include/mach-dreamcast/mach/pci.h
View File

@ -21,5 +21,7 @@
#define GAPSPCI_IRQ HW_EVENT_EXTERNAL
extern struct pci_ops gapspci_pci_ops;
#endif /* __ASM_SH_DREAMCAST_PCI_H */