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pci-emma2rh.c
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1 /*
2  * Copyright (C) NEC Electronics Corporation 2004-2006
3  *
4  * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
5  *
6  * Copyright 2001 MontaVista Software Inc.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  */
22 
23 #include <linux/kernel.h>
24 #include <linux/init.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 
28 #include <asm/bootinfo.h>
29 
30 #include <asm/emma/emma2rh.h>
31 
32 static struct resource pci_io_resource = {
33  .name = "pci IO space",
34  .start = EMMA2RH_PCI_IO_BASE,
36  .flags = IORESOURCE_IO,
37 };
38 
39 static struct resource pci_mem_resource = {
40  .name = "pci memory space",
41  .start = EMMA2RH_PCI_MEM_BASE,
43  .flags = IORESOURCE_MEM,
44 };
45 
46 extern struct pci_ops emma2rh_pci_ops;
47 
48 static struct pci_controller emma2rh_pci_controller = {
49  .pci_ops = &emma2rh_pci_ops,
50  .mem_resource = &pci_mem_resource,
51  .io_resource = &pci_io_resource,
52  .mem_offset = -0x04000000,
53  .io_offset = 0,
54 };
55 
56 static void __init emma2rh_pci_init(void)
57 {
58  /* setup PCI interface */
59  emma2rh_out32(EMMA2RH_PCI_ARBIT_CTR, 0x70f);
60 
61  emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x80000a18);
62  emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_COMMAND,
65  emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_0, 0x10000000);
66  emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_1, 0x00000000);
67 
68  emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x12000000 | 0x218);
69  emma2rh_out32(EMMA2RH_PCI_IWIN1_CTR, 0x18000000 | 0x600);
70  emma2rh_out32(EMMA2RH_PCI_INIT_ESWP, 0x00000200);
71 
72  emma2rh_out32(EMMA2RH_PCI_TWIN_CTR, 0x00009200);
73  emma2rh_out32(EMMA2RH_PCI_TWIN_BADR, 0x00000000);
74  emma2rh_out32(EMMA2RH_PCI_TWIN0_DADR, 0x00000000);
75  emma2rh_out32(EMMA2RH_PCI_TWIN1_DADR, 0x00000000);
76 }
77 
78 static int __init emma2rh_pci_setup(void)
79 {
80  emma2rh_pci_init();
81  register_pci_controller(&emma2rh_pci_controller);
82  return 0;
83 }
84 
85 arch_initcall(emma2rh_pci_setup);