1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
7 #include <asm/arch/device.h>
8 #include <asm/arch/msg_port.h>
9 #include <asm/arch/quark.h>
11 void msg_port_setup(int op, int port, int reg)
13 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_REG,
14 (((op) << 24) | ((port) << 16) |
15 (((reg) << 8) & 0xff00) | MSG_BYTE_ENABLE));
18 u32 msg_port_read(u8 port, u32 reg)
22 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
24 msg_port_setup(MSG_OP_READ, port, reg);
25 qrk_pci_read_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, &value);
30 void msg_port_write(u8 port, u32 reg, u32 value)
32 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, value);
33 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
35 msg_port_setup(MSG_OP_WRITE, port, reg);
38 u32 msg_port_alt_read(u8 port, u32 reg)
42 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
44 msg_port_setup(MSG_OP_ALT_READ, port, reg);
45 qrk_pci_read_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, &value);
50 void msg_port_alt_write(u8 port, u32 reg, u32 value)
52 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, value);
53 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
55 msg_port_setup(MSG_OP_ALT_WRITE, port, reg);
58 u32 msg_port_io_read(u8 port, u32 reg)
62 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
64 msg_port_setup(MSG_OP_IO_READ, port, reg);
65 qrk_pci_read_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, &value);
70 void msg_port_io_write(u8 port, u32 reg, u32 value)
72 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_DATA_REG, value);
73 qrk_pci_write_config_dword(QUARK_HOST_BRIDGE, MSG_CTRL_EXT_REG,
75 msg_port_setup(MSG_OP_IO_WRITE, port, reg);