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gerrit-public.fairphone.software / kernel / msm-5.4 / 8c93650890a33318263880dec36603a6d5749b7e / . / arch / mips / mips-boards / generic / pci.c
blob: 92c34bda02ae6d14c7e3c7955d3a79fb166a1f22 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
4 *
5 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
6 *
7 * This program is free software; you can distribute it and/or modify it
8 * under the terms of the GNU General Public License (Version 2) as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
19 *
20 * MIPS boards specific PCI support.
21 */
22#include <linux/config.h>
23#include <linux/types.h>
24#include <linux/pci.h>
25#include <linux/kernel.h>
26#include <linux/init.h>
27
28#include <asm/mips-boards/generic.h>
29#include <asm/gt64120.h>
30#include <asm/mips-boards/bonito64.h>
31#include <asm/mips-boards/msc01_pci.h>
32#ifdef CONFIG_MIPS_MALTA
33#include <asm/mips-boards/malta.h>
34#endif
35
36static struct resource bonito64_mem_resource = {
37 .name = "Bonito PCI MEM",
38 .start = 0x10000000UL,
39 .end = 0x1bffffffUL,
40 .flags = IORESOURCE_MEM,
41};
42
43static struct resource bonito64_io_resource = {
44 .name = "Bonito IO MEM",
45 .start = 0x00002000UL, /* avoid conflicts with YAMON allocated I/O addresses */
46 .end = 0x000fffffUL,
47 .flags = IORESOURCE_IO,
48};
49
50static struct resource gt64120_mem_resource = {
51 .name = "GT64120 PCI MEM",
52 .start = 0x10000000UL,
53 .end = 0x1bdfffffUL,
54 .flags = IORESOURCE_MEM,
55};
56
57static struct resource gt64120_io_resource = {
58 .name = "GT64120 IO MEM",
59#ifdef CONFIG_MIPS_ATLAS
60 .start = 0x18000000UL,
61 .end = 0x181fffffUL,
62#endif
63#ifdef CONFIG_MIPS_MALTA
64 .start = 0x00002000UL,
65 .end = 0x001fffffUL,
66#endif
67 .flags = IORESOURCE_IO,
68};
69
70static struct resource msc_mem_resource = {
71 .name = "MSC PCI MEM",
72 .start = 0x10000000UL,
73 .end = 0x1fffffffUL,
74 .flags = IORESOURCE_MEM,
75};
76
77static struct resource msc_io_resource = {
78 .name = "MSC IO MEM",
79 .start = 0x00002000UL,
80 .end = 0x007fffffUL,
81 .flags = IORESOURCE_IO,
82};
83
84extern struct pci_ops bonito64_pci_ops;
85extern struct pci_ops gt64120_pci_ops;
86extern struct pci_ops msc_pci_ops;
87
88static struct pci_controller bonito64_controller = {
89 .pci_ops = &bonito64_pci_ops,
90 .io_resource = &bonito64_io_resource,
91 .mem_resource = &bonito64_mem_resource,
92 .mem_offset = 0x10000000UL,
93 .io_offset = 0x00000000UL,
94};
95
96static struct pci_controller gt64120_controller = {
97 .pci_ops = &gt64120_pci_ops,
98 .io_resource = &gt64120_io_resource,
99 .mem_resource = &gt64120_mem_resource,
100 .mem_offset = 0x00000000UL,
101 .io_offset = 0x00000000UL,
102};
103
104static struct pci_controller msc_controller = {
105 .pci_ops = &msc_pci_ops,
106 .io_resource = &msc_io_resource,
107 .mem_resource = &msc_mem_resource,
108 .mem_offset = 0x10000000UL,
109 .io_offset = 0x00000000UL,
110};
111
112static int __init pcibios_init(void)
113{
114 struct pci_controller *controller;
115
116 switch (mips_revision_corid) {
117 case MIPS_REVISION_CORID_QED_RM5261:
118 case MIPS_REVISION_CORID_CORE_LV:
119 case MIPS_REVISION_CORID_CORE_FPGA:
120 case MIPS_REVISION_CORID_CORE_FPGAR2:
121 /*
122 * Due to a bug in the Galileo system controller, we need
123 * to setup the PCI BAR for the Galileo internal registers.
124 * This should be done in the bios/bootprom and will be
125 * fixed in a later revision of YAMON (the MIPS boards
126 * boot prom).
127 */
128 GT_WRITE(GT_PCI0_CFGADDR_OFS,
129 (0 << GT_PCI0_CFGADDR_BUSNUM_SHF) | /* Local bus */
130 (0 << GT_PCI0_CFGADDR_DEVNUM_SHF) | /* GT64120 dev */
131 (0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) | /* Function 0*/
132 ((0x20/4) << GT_PCI0_CFGADDR_REGNUM_SHF) | /* BAR 4*/
133 GT_PCI0_CFGADDR_CONFIGEN_BIT );
134
135 /* Perform the write */
136 GT_WRITE(GT_PCI0_CFGDATA_OFS, CPHYSADDR(MIPS_GT_BASE));
137
138 controller = &gt64120_controller;
139 break;
140
141 case MIPS_REVISION_CORID_BONITO64:
142 case MIPS_REVISION_CORID_CORE_20K:
143 case MIPS_REVISION_CORID_CORE_EMUL_BON:
144 controller = &bonito64_controller;
145 break;
146
147 case MIPS_REVISION_CORID_CORE_MSC:
148 case MIPS_REVISION_CORID_CORE_FPGA2:
149 case MIPS_REVISION_CORID_CORE_EMUL_MSC:
150 controller = &msc_controller;
151 break;
152 default:
153 return 1;
154 }
155
156 ioport_resource.end = controller->io_resource->end;
157
158 register_pci_controller (controller);
159
160 return 0;
161}
162
163early_initcall(pcibios_init);