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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
parent
0db38cea69
commit
3444f5ec49
@ -12,7 +12,8 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7780) += pci-sh7780.o ops-sh4.o
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obj-$(CONFIG_CPU_SUBTYPE_SH7785) += pci-sh7780.o ops-sh4.o
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obj-$(CONFIG_CPU_SH5) += pci-sh5.o ops-sh5.o
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obj-$(CONFIG_SH_DREAMCAST) += ops-dreamcast.o fixups-dreamcast.o
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obj-$(CONFIG_SH_DREAMCAST) += ops-dreamcast.o fixups-dreamcast.o \
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pci-dreamcast.o
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obj-$(CONFIG_SH_SECUREEDGE5410) += ops-snapgear.o
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obj-$(CONFIG_SH_RTS7751R2D) += ops-rts7751r2d.o fixups-rts7751r2d.o
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obj-$(CONFIG_SH_SH03) += ops-sh03.o fixups-sh03.o
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@ -1,15 +1,9 @@
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/*
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* arch/sh/drivers/pci/ops-dreamcast.c
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*
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* PCI operations for the Sega Dreamcast
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*
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* Copyright (C) 2001, 2002 M. R. Brown
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* Copyright (C) 2002, 2003 Paul Mundt
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*
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* This file originally bore the message (with enclosed-$):
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* Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
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* Dreamcast PCI: Supports SEGA Broadband Adaptor only.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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@ -23,25 +17,10 @@
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <mach/pci.h>
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static struct resource gapspci_io_resource = {
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.name = "GAPSPCI IO",
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.start = GAPSPCI_BBA_CONFIG,
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.end = GAPSPCI_BBA_CONFIG + GAPSPCI_BBA_CONFIG_SIZE - 1,
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.flags = IORESOURCE_IO,
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};
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static struct resource gapspci_mem_resource = {
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.name = "GAPSPCI mem",
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.start = GAPSPCI_DMA_BASE,
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.end = GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1,
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.flags = IORESOURCE_MEM,
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};
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/*
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* The !gapspci_config_access case really shouldn't happen, ever, unless
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* someone implicitly messes around with the last devfn value.. otherwise we
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@ -76,10 +55,10 @@ static int gapspci_read(struct pci_bus *bus, unsigned int devfn, int where, int
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return PCIBIOS_DEVICE_NOT_FOUND;
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switch (size) {
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case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break;
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case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break;
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case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break;
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}
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case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break;
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case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break;
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case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break;
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}
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return PCIBIOS_SUCCESSFUL;
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}
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@ -90,72 +69,15 @@ static int gapspci_write(struct pci_bus *bus, unsigned int devfn, int where, int
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return PCIBIOS_DEVICE_NOT_FOUND;
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switch (size) {
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case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break;
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case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break;
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case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break;
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case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break;
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case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break;
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case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break;
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}
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return PCIBIOS_SUCCESSFUL;
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}
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static struct pci_ops gapspci_pci_ops = {
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struct pci_ops gapspci_pci_ops = {
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.read = gapspci_read,
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.write = gapspci_write,
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};
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/*
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* gapspci init
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*/
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static int __init gapspci_init(struct pci_channel *chan)
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{
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char idbuf[16];
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int i;
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/*
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* FIXME: All of this wants documenting to some degree,
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* even some basic register definitions would be nice.
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*
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* I haven't seen anything this ugly since.. maple.
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*/
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for (i=0; i<16; i++)
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idbuf[i] = inb(GAPSPCI_REGS+i);
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if (strncmp(idbuf, "GAPSPCI_BRIDGE_2", 16))
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return -ENODEV;
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outl(0x5a14a501, GAPSPCI_REGS+0x18);
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for (i=0; i<1000000; i++)
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;
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if (inl(GAPSPCI_REGS+0x18) != 1)
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return -EINVAL;
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outl(0x01000000, GAPSPCI_REGS+0x20);
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outl(0x01000000, GAPSPCI_REGS+0x24);
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outl(GAPSPCI_DMA_BASE, GAPSPCI_REGS+0x28);
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outl(GAPSPCI_DMA_BASE+GAPSPCI_DMA_SIZE, GAPSPCI_REGS+0x2c);
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outl(1, GAPSPCI_REGS+0x14);
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outl(1, GAPSPCI_REGS+0x34);
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/* Setting Broadband Adapter */
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outw(0xf900, GAPSPCI_BBA_CONFIG+0x06);
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outl(0x00000000, GAPSPCI_BBA_CONFIG+0x30);
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outb(0x00, GAPSPCI_BBA_CONFIG+0x3c);
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outb(0xf0, GAPSPCI_BBA_CONFIG+0x0d);
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outw(0x0006, GAPSPCI_BBA_CONFIG+0x04);
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outl(0x00002001, GAPSPCI_BBA_CONFIG+0x10);
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outl(0x01000000, GAPSPCI_BBA_CONFIG+0x14);
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return 0;
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}
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struct pci_channel board_pci_channels[] = {
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{ gapspci_init, &gapspci_pci_ops, &gapspci_io_resource,
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&gapspci_mem_resource, 0, 1 },
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{ 0, }
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};
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105
arch/sh/drivers/pci/pci-dreamcast.c
Normal file
105
arch/sh/drivers/pci/pci-dreamcast.c
Normal file
@ -0,0 +1,105 @@
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/*
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* PCI support for the Sega Dreamcast
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*
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* Copyright (C) 2001, 2002 M. R. Brown
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* Copyright (C) 2002, 2003 Paul Mundt
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*
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* This file originally bore the message (with enclosed-$):
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* Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
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* Dreamcast PCI: Supports SEGA Broadband Adaptor only.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <mach/pci.h>
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static struct resource gapspci_io_resource = {
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.name = "GAPSPCI IO",
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.start = GAPSPCI_BBA_CONFIG,
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.end = GAPSPCI_BBA_CONFIG + GAPSPCI_BBA_CONFIG_SIZE - 1,
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.flags = IORESOURCE_IO,
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};
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static struct resource gapspci_mem_resource = {
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.name = "GAPSPCI mem",
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.start = GAPSPCI_DMA_BASE,
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.end = GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1,
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.flags = IORESOURCE_MEM,
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};
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/*
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* gapspci init
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*/
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static int __init gapspci_init(struct pci_channel *chan)
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{
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char idbuf[16];
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int i;
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/*
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* FIXME: All of this wants documenting to some degree,
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* even some basic register definitions would be nice.
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*
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* I haven't seen anything this ugly since.. maple.
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*/
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for (i=0; i<16; i++)
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idbuf[i] = inb(GAPSPCI_REGS+i);
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if (strncmp(idbuf, "GAPSPCI_BRIDGE_2", 16))
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return -ENODEV;
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outl(0x5a14a501, GAPSPCI_REGS+0x18);
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for (i=0; i<1000000; i++)
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cpu_relax();
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if (inl(GAPSPCI_REGS+0x18) != 1)
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return -EINVAL;
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outl(0x01000000, GAPSPCI_REGS+0x20);
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outl(0x01000000, GAPSPCI_REGS+0x24);
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outl(GAPSPCI_DMA_BASE, GAPSPCI_REGS+0x28);
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outl(GAPSPCI_DMA_BASE+GAPSPCI_DMA_SIZE, GAPSPCI_REGS+0x2c);
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outl(1, GAPSPCI_REGS+0x14);
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outl(1, GAPSPCI_REGS+0x34);
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/* Setting Broadband Adapter */
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outw(0xf900, GAPSPCI_BBA_CONFIG+0x06);
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outl(0x00000000, GAPSPCI_BBA_CONFIG+0x30);
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outb(0x00, GAPSPCI_BBA_CONFIG+0x3c);
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outb(0xf0, GAPSPCI_BBA_CONFIG+0x0d);
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outw(0x0006, GAPSPCI_BBA_CONFIG+0x04);
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outl(0x00002001, GAPSPCI_BBA_CONFIG+0x10);
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outl(0x01000000, GAPSPCI_BBA_CONFIG+0x14);
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return 0;
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}
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struct pci_channel board_pci_channels[] = {
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{
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.init = gapspci_init,
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.pci_ops = &gapspci_pci_ops,
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.io_resource = &gapspci_io_resource,
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.mem_resource = &gapspci_mem_resource,
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.first_devfn = 0,
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.last_devfn = 1,
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}, {
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.init = NULL,
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}
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};
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@ -21,5 +21,7 @@
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#define GAPSPCI_IRQ HW_EVENT_EXTERNAL
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extern struct pci_ops gapspci_pci_ops;
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#endif /* __ASM_SH_DREAMCAST_PCI_H */
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