diff options
Diffstat (limited to 'arch/sh/drivers/pci/ops-dreamcast.c')
-rw-r--r-- | arch/sh/drivers/pci/ops-dreamcast.c | 107 |
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 | ||
31 | static 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 | |||
38 | static 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 | |||
45 | static struct pci_ops gapspci_pci_ops; | ||
46 | |||
47 | struct pci_channel board_pci_channels[] = { | ||
48 | { &gapspci_pci_ops, &gapspci_io_resource, | ||
49 | &gapspci_mem_resource, 0, 1 }, | ||
50 | { 0, } | ||
51 | }; | ||
52 | EXPORT_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 | ||
110 | static struct pci_ops gapspci_pci_ops = { | 80 | struct 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 | |||
119 | int __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 */ | ||
167 | char * __devinit pcibios_setup(char *str) | ||
168 | { | ||
169 | return str; | ||
170 | } | ||