2 * SH7780 PCI Controller (PCIC) for U-Boot.
3 * (C) Dustin McIntire (dustin@sensoria.com)
4 * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
5 * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com>
7 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/processor.h>
17 #define SH7780_VENDOR_ID 0x1912
18 #define SH7780_DEVICE_ID 0x0002
19 #define SH7780_PCICR_PREFIX 0xA5000000
20 #define SH7780_PCICR_PFCS 0x00000800
21 #define SH7780_PCICR_FTO 0x00000400
22 #define SH7780_PCICR_PFE 0x00000200
23 #define SH7780_PCICR_TBS 0x00000100
24 #define SH7780_PCICR_ARBM 0x00000040
25 #define SH7780_PCICR_IOCS 0x00000004
26 #define SH7780_PCICR_PRST 0x00000002
27 #define SH7780_PCICR_CFIN 0x00000001
29 #define p4_in(addr) (*(vu_long *)addr)
30 #define p4_out(data, addr) (*(vu_long *)addr) = (data)
31 #define p4_inw(addr) (*(vu_short *)addr)
32 #define p4_outw(data, addr) (*(vu_short *)addr) = (data)
34 int pci_sh4_read_config_dword(struct pci_controller *hose,
35 pci_dev_t dev, int offset, u32 *value)
37 u32 par_data = 0x80000000 | dev;
39 p4_out(par_data | (offset & 0xfc), SH7780_PCIPAR);
40 *value = p4_in(SH7780_PCIPDR);
45 int pci_sh4_write_config_dword(struct pci_controller *hose,
46 pci_dev_t dev, int offset, u32 value)
48 u32 par_data = 0x80000000 | dev;
50 p4_out(par_data | (offset & 0xfc), SH7780_PCIPAR);
51 p4_out(value, SH7780_PCIPDR);
55 int pci_sh7780_init(struct pci_controller *hose)
57 p4_out(0x01, SH7780_PCIECR);
59 if (p4_inw(SH7780_PCIVID) != SH7780_VENDOR_ID
60 && p4_inw(SH7780_PCIDID) != SH7780_DEVICE_ID) {
61 printf("PCI: Unknown PCI host bridge.\n");
64 printf("PCI: SH7780 PCI host bridge found.\n");
66 /* Toggle PCI reset pin */
67 p4_out((SH7780_PCICR_PREFIX | SH7780_PCICR_PRST), SH7780_PCICR);
69 p4_out(SH7780_PCICR_PREFIX, SH7780_PCICR);
70 p4_outw(0x0047, SH7780_PCICMD);
72 p4_out(CONFIG_SH7780_PCI_LSR, SH7780_PCILSR0);
73 p4_out(CONFIG_SH7780_PCI_LAR, SH7780_PCILAR0);
74 p4_out(0x00000000, SH7780_PCILSR1);
75 p4_out(0, SH7780_PCILAR1);
76 p4_out(CONFIG_SH7780_PCI_BAR, SH7780_PCIMBAR0);
77 p4_out(0x00000000, SH7780_PCIMBAR1);
79 p4_out(0xFD000000, SH7780_PCIMBR0);
80 p4_out(0x00FC0000, SH7780_PCIMBMR0);
82 /* if use Operand Cache then enable PCICSCR Soonp bits. */
83 p4_out(0x08000000, SH7780_PCICSAR0);
84 p4_out(0x0000001B, SH7780_PCICSCR0); /* Snoop bit :On */
86 p4_out((SH7780_PCICR_PREFIX | SH7780_PCICR_CFIN | SH7780_PCICR_ARBM
87 | SH7780_PCICR_FTO | SH7780_PCICR_PFCS | SH7780_PCICR_PFE),