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-rw-r--r--arch/sh/drivers/pci/ops-dreamcast.c107
1 files changed, 10 insertions, 97 deletions
diff --git a/arch/sh/drivers/pci/ops-dreamcast.c b/arch/sh/drivers/pci/ops-dreamcast.c
index f5d2a2aa6f3f..e83d0d3aabe2 100644
--- a/arch/sh/drivers/pci/ops-dreamcast.c
+++ b/arch/sh/drivers/pci/ops-dreamcast.c
@@ -1,15 +1,9 @@
1/* 1/*
2 * arch/sh/drivers/pci/ops-dreamcast.c
3 *
4 * PCI operations for the Sega Dreamcast 2 * PCI operations for the Sega Dreamcast
5 * 3 *
6 * Copyright (C) 2001, 2002 M. R. Brown 4 * Copyright (C) 2001, 2002 M. R. Brown
7 * Copyright (C) 2002, 2003 Paul Mundt 5 * Copyright (C) 2002, 2003 Paul Mundt
8 * 6 *
9 * This file originally bore the message (with enclosed-$):
10 * Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
11 * Dreamcast PCI: Supports SEGA Broadband Adaptor only.
12 *
13 * This file is subject to the terms and conditions of the GNU General Public 7 * This file is subject to the terms and conditions of the GNU General Public
14 * License. See the file "COPYING" in the main directory of this archive 8 * License. See the file "COPYING" in the main directory of this archive
15 * for more details. 9 * for more details.
@@ -23,34 +17,10 @@
23#include <linux/irq.h> 17#include <linux/irq.h>
24#include <linux/pci.h> 18#include <linux/pci.h>
25#include <linux/module.h> 19#include <linux/module.h>
26 20#include <linux/io.h>
27#include <asm/io.h> 21#include <linux/irq.h>
28#include <asm/irq.h>
29#include <mach/pci.h> 22#include <mach/pci.h>
30 23
31static struct resource gapspci_io_resource = {
32 .name = "GAPSPCI IO",
33 .start = GAPSPCI_BBA_CONFIG,
34 .end = GAPSPCI_BBA_CONFIG + GAPSPCI_BBA_CONFIG_SIZE - 1,
35 .flags = IORESOURCE_IO,
36};
37
38static struct resource gapspci_mem_resource = {
39 .name = "GAPSPCI mem",
40 .start = GAPSPCI_DMA_BASE,
41 .end = GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1,
42 .flags = IORESOURCE_MEM,
43};
44
45static struct pci_ops gapspci_pci_ops;
46
47struct pci_channel board_pci_channels[] = {
48 { &gapspci_pci_ops, &gapspci_io_resource,
49 &gapspci_mem_resource, 0, 1 },
50 { 0, }
51};
52EXPORT_SYMBOL(board_pci_channels);
53
54/* 24/*
55 * The !gapspci_config_access case really shouldn't happen, ever, unless 25 * The !gapspci_config_access case really shouldn't happen, ever, unless
56 * someone implicitly messes around with the last devfn value.. otherwise we 26 * someone implicitly messes around with the last devfn value.. otherwise we
@@ -85,10 +55,10 @@ static int gapspci_read(struct pci_bus *bus, unsigned int devfn, int where, int
85 return PCIBIOS_DEVICE_NOT_FOUND; 55 return PCIBIOS_DEVICE_NOT_FOUND;
86 56
87 switch (size) { 57 switch (size) {
88 case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break; 58 case 1: *val = inb(GAPSPCI_BBA_CONFIG+where); break;
89 case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break; 59 case 2: *val = inw(GAPSPCI_BBA_CONFIG+where); break;
90 case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break; 60 case 4: *val = inl(GAPSPCI_BBA_CONFIG+where); break;
91 } 61 }
92 62
93 return PCIBIOS_SUCCESSFUL; 63 return PCIBIOS_SUCCESSFUL;
94} 64}
@@ -99,72 +69,15 @@ static int gapspci_write(struct pci_bus *bus, unsigned int devfn, int where, int
99 return PCIBIOS_DEVICE_NOT_FOUND; 69 return PCIBIOS_DEVICE_NOT_FOUND;
100 70
101 switch (size) { 71 switch (size) {
102 case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break; 72 case 1: outb(( u8)val, GAPSPCI_BBA_CONFIG+where); break;
103 case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break; 73 case 2: outw((u16)val, GAPSPCI_BBA_CONFIG+where); break;
104 case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break; 74 case 4: outl((u32)val, GAPSPCI_BBA_CONFIG+where); break;
105 } 75 }
106 76
107 return PCIBIOS_SUCCESSFUL; 77 return PCIBIOS_SUCCESSFUL;
108} 78}
109 79
110static struct pci_ops gapspci_pci_ops = { 80struct pci_ops gapspci_pci_ops = {
111 .read = gapspci_read, 81 .read = gapspci_read,
112 .write = gapspci_write, 82 .write = gapspci_write,
113}; 83};
114
115/*
116 * gapspci init
117 */
118
119int __init gapspci_init(void)
120{
121 char idbuf[16];
122 int i;
123
124 /*
125 * FIXME: All of this wants documenting to some degree,
126 * even some basic register definitions would be nice.
127 *
128 * I haven't seen anything this ugly since.. maple.
129 */
130
131 for (i=0; i<16; i++)
132 idbuf[i] = inb(GAPSPCI_REGS+i);
133
134 if (strncmp(idbuf, "GAPSPCI_BRIDGE_2", 16))
135 return -ENODEV;
136
137 outl(0x5a14a501, GAPSPCI_REGS+0x18);
138
139 for (i=0; i<1000000; i++)
140 ;
141
142 if (inl(GAPSPCI_REGS+0x18) != 1)
143 return -EINVAL;
144
145 outl(0x01000000, GAPSPCI_REGS+0x20);
146 outl(0x01000000, GAPSPCI_REGS+0x24);
147
148 outl(GAPSPCI_DMA_BASE, GAPSPCI_REGS+0x28);
149 outl(GAPSPCI_DMA_BASE+GAPSPCI_DMA_SIZE, GAPSPCI_REGS+0x2c);
150
151 outl(1, GAPSPCI_REGS+0x14);
152 outl(1, GAPSPCI_REGS+0x34);
153
154 /* Setting Broadband Adapter */
155 outw(0xf900, GAPSPCI_BBA_CONFIG+0x06);
156 outl(0x00000000, GAPSPCI_BBA_CONFIG+0x30);
157 outb(0x00, GAPSPCI_BBA_CONFIG+0x3c);
158 outb(0xf0, GAPSPCI_BBA_CONFIG+0x0d);
159 outw(0x0006, GAPSPCI_BBA_CONFIG+0x04);
160 outl(0x00002001, GAPSPCI_BBA_CONFIG+0x10);
161 outl(0x01000000, GAPSPCI_BBA_CONFIG+0x14);
162
163 return 0;
164}
165
166/* Haven't done anything here as yet */
167char * __devinit pcibios_setup(char *str)
168{
169 return str;
170}