1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *  Copyright (C) NEC Electronics Corporation 2004-2006
 4 *
 5 *  This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
 6 *
 7 *	Copyright 2001 MontaVista Software Inc.
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/types.h>
13#include <linux/pci.h>
14
15#include <asm/bootinfo.h>
16
17#include <asm/emma/emma2rh.h>
18
19static struct resource pci_io_resource = {
20	.name = "pci IO space",
21	.start = EMMA2RH_PCI_IO_BASE,
22	.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1,
23	.flags = IORESOURCE_IO,
24};
25
26static struct resource pci_mem_resource = {
27	.name = "pci memory space",
28	.start = EMMA2RH_PCI_MEM_BASE,
29	.end = EMMA2RH_PCI_MEM_BASE + EMMA2RH_PCI_MEM_SIZE - 1,
30	.flags = IORESOURCE_MEM,
31};
32
33extern struct pci_ops emma2rh_pci_ops;
34
35static struct pci_controller emma2rh_pci_controller = {
36	.pci_ops = &emma2rh_pci_ops,
37	.mem_resource = &pci_mem_resource,
38	.io_resource = &pci_io_resource,
39	.mem_offset = -0x04000000,
40	.io_offset = 0,
41};
42
43static void __init emma2rh_pci_init(void)
44{
45	/* setup PCI interface */
46	emma2rh_out32(EMMA2RH_PCI_ARBIT_CTR, 0x70f);
47
48	emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x80000a18);
49	emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_COMMAND,
50		      PCI_STATUS_DEVSEL_MEDIUM | PCI_STATUS_CAP_LIST |
51		      PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
52	emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_0, 0x10000000);
53	emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_1, 0x00000000);
54
55	emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x12000000 | 0x218);
56	emma2rh_out32(EMMA2RH_PCI_IWIN1_CTR, 0x18000000 | 0x600);
57	emma2rh_out32(EMMA2RH_PCI_INIT_ESWP, 0x00000200);
58
59	emma2rh_out32(EMMA2RH_PCI_TWIN_CTR, 0x00009200);
60	emma2rh_out32(EMMA2RH_PCI_TWIN_BADR, 0x00000000);
61	emma2rh_out32(EMMA2RH_PCI_TWIN0_DADR, 0x00000000);
62	emma2rh_out32(EMMA2RH_PCI_TWIN1_DADR, 0x00000000);
63}
64
65static int __init emma2rh_pci_setup(void)
66{
67	emma2rh_pci_init();
68	register_pci_controller(&emma2rh_pci_controller);
69	return 0;
70}
71
72arch_initcall(emma2rh_pci_setup);