1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * SH4 PCI Controller (PCIC) for U-Boot.
4 * (C) Dustin McIntire (dustin@sensoria.com)
5 * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com>
7 *
8 * u-boot/arch/sh/cpu/sh4/pci-sh4.c
9 */
10
11 #include <common.h>
12 #include <linux/delay.h>
13
14 #include <asm/processor.h>
15 #include <asm/io.h>
16 #include <asm/pci.h>
17 #include <pci.h>
18
pci_sh4_init(struct pci_controller * hose)19 int pci_sh4_init(struct pci_controller *hose)
20 {
21 hose->first_busno = 0;
22 hose->region_count = 0;
23 hose->last_busno = 0xff;
24
25 /* PCI memory space */
26 pci_set_region(hose->regions + 0,
27 CONFIG_PCI_MEM_BUS,
28 CONFIG_PCI_MEM_PHYS,
29 CONFIG_PCI_MEM_SIZE,
30 PCI_REGION_MEM);
31 hose->region_count++;
32
33 /* PCI IO space */
34 pci_set_region(hose->regions + 1,
35 CONFIG_PCI_IO_BUS,
36 CONFIG_PCI_IO_PHYS,
37 CONFIG_PCI_IO_SIZE,
38 PCI_REGION_IO);
39 hose->region_count++;
40
41 #if defined(CONFIG_PCI_SYS_BUS)
42 /* PCI System Memory space */
43 pci_set_region(hose->regions + 2,
44 CONFIG_PCI_SYS_BUS,
45 CONFIG_PCI_SYS_PHYS,
46 CONFIG_PCI_SYS_SIZE,
47 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
48 hose->region_count++;
49 #endif
50
51 udelay(1000);
52
53 pci_set_ops(hose,
54 pci_hose_read_config_byte_via_dword,
55 pci_hose_read_config_word_via_dword,
56 pci_sh4_read_config_dword,
57 pci_hose_write_config_byte_via_dword,
58 pci_hose_write_config_word_via_dword,
59 pci_sh4_write_config_dword);
60
61 pci_register_hose(hose);
62
63 udelay(1000);
64
65 #ifdef CONFIG_PCI_SCAN_SHOW
66 printf("PCI: Bus Dev VenId DevId Class Int\n");
67 #endif
68 hose->last_busno = pci_hose_scan(hose);
69 return 0;
70 }
71
pci_skip_dev(struct pci_controller * hose,pci_dev_t dev)72 int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
73 {
74 return 0;
75 }
76
77 #ifdef CONFIG_PCI_SCAN_SHOW
pci_print_dev(struct pci_controller * hose,pci_dev_t dev)78 int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
79 {
80 return 1;
81 }
82 #endif /* CONFIG_PCI_SCAN_SHOW */
83