1 /*
2 * linux/arch/sh/drivers/pci/ops-se7780.c
3 *
4 * Copyright (C) 2006 Nobuhiro Iwamatsu
5 *
6 * PCI initialization for the Hitachi UL Solution Engine 7780SE03
7 *
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
10 */
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/pci.h>
16 #include <mach-se/mach/se7780.h>
17 #include <asm/io.h>
18 #include "pci-sh4.h"
19
20 /*
21 * IDSEL = AD16 PCI slot
22 * IDSEL = AD17 PCI slot
23 * IDSEL = AD18 Serial ATA Controller (Silicon Image SiL3512A)
24 * IDSEL = AD19 USB Host Controller (NEC uPD7210100A)
25 */
26
27 /* IDSEL [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] */
28 static char se7780_irq_tab[4][16] __initdata = {
29 /* INTA */
30 { 65, 68, 67, 68, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
31 /* INTB */
32 { 66, 65, -1, 65, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
33 /* INTC */
34 { 67, 66, -1, 66, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
35 /* INTD */
36 { 68, 67, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
37 };
38
pcibios_map_platform_irq(struct pci_dev * pdev,u8 slot,u8 pin)39 int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
40 {
41 return se7780_irq_tab[pin-1][slot];
42 }
43
44 static struct resource se7780_io_resource = {
45 .name = "SH7780_IO",
46 .start = SH7780_PCI_IO_BASE,
47 .end = SH7780_PCI_IO_BASE + SH7780_PCI_IO_SIZE - 1,
48 .flags = IORESOURCE_IO
49 };
50
51 static struct resource se7780_mem_resource = {
52 .name = "SH7780_mem",
53 .start = SH7780_PCI_MEMORY_BASE,
54 .end = SH7780_PCI_MEMORY_BASE + SH7780_PCI_MEM_SIZE - 1,
55 .flags = IORESOURCE_MEM
56 };
57
58 extern struct pci_ops se7780_pci_ops;
59
60 struct pci_channel board_pci_channels[] = {
61 { &sh4_pci_ops, &se7780_io_resource, &se7780_mem_resource, 0, 0xff },
62 { NULL, NULL, NULL, 0, 0 },
63 };
64 EXPORT_SYMBOL(board_pci_channels);
65
66 static struct sh4_pci_address_map se7780_pci_map = {
67 .window0 = {
68 .base = SH7780_CS2_BASE_ADDR,
69 .size = 0x04000000,
70 },
71 .flags = SH4_PCIC_NO_RESET,
72 };
73
pcibios_init_platform(void)74 int __init pcibios_init_platform(void)
75 {
76 printk("SH7780 PCI: Finished initialization of the PCI controller\n");
77
78 /*
79 * FPGA PCISEL register initialize
80 *
81 * CPU || SLOT1 | SLOT2 | S-ATA | USB
82 * -------------------------------------
83 * INTA || INTA | INTD | -- | INTB
84 * -------------------------------------
85 * INTB || INTB | INTA | -- | INTC
86 * -------------------------------------
87 * INTC || INTC | INTB | INTA | --
88 * -------------------------------------
89 * INTD || INTD | INTC | -- | INTA
90 * -------------------------------------
91 */
92 ctrl_outw(0x0013, FPGA_PCI_INTSEL1);
93 ctrl_outw(0xE402, FPGA_PCI_INTSEL2);
94
95 return sh7780_pcic_init(&se7780_pci_map);
96 }
97