mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*/
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#ifndef _QUARK_MSG_PORT_H_
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#define _QUARK_MSG_PORT_H_
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/*
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* In the Quark SoC, some chipset commands are accomplished by utilizing
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* the internal message network within the host bridge (D0:F0). Accesses
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* to this network are accomplished by populating the message control
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* register (MCR), Message Control Register eXtension (MCRX) and the
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* message data register (MDR).
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*/
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#define MSG_CTRL_REG 0xd0 /* Message Control Register */
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#define MSG_DATA_REG 0xd4 /* Message Data Register */
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#define MSG_CTRL_EXT_REG 0xd8 /* Message Control Register EXT */
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/* Normal Read/Write OpCodes */
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#define MSG_OP_READ 0x10
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#define MSG_OP_WRITE 0x11
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/* Alternative Read/Write OpCodes */
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#define MSG_OP_ALT_READ 0x06
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#define MSG_OP_ALT_WRITE 0x07
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/* IO Read/Write OpCodes */
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#define MSG_OP_IO_READ 0x02
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#define MSG_OP_IO_WRITE 0x03
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/* All byte enables */
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#define MSG_BYTE_ENABLE 0xf0
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#ifndef __ASSEMBLY__
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/**
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* msg_port_setup - set up the message port control register
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*
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* @op: message bus access opcode
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* @port: port number on the message bus
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* @reg: register number within a port
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*/
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void msg_port_setup(int op, int port, int reg);
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/**
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* msg_port_read - read a message port register using normal opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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*
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* @return: message port register value
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*/
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u32 msg_port_read(u8 port, u32 reg);
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/**
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* msg_port_write - write a message port register using normal opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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* @value: register value to write
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*/
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void msg_port_write(u8 port, u32 reg, u32 value);
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/**
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* msg_port_alt_read - read a message port register using alternative opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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*
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* @return: message port register value
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*/
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u32 msg_port_alt_read(u8 port, u32 reg);
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/**
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* msg_port_alt_write - write a message port register using alternative opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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* @value: register value to write
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*/
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void msg_port_alt_write(u8 port, u32 reg, u32 value);
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/**
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* msg_port_io_read - read a message port register using I/O opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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*
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* @return: message port register value
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*/
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u32 msg_port_io_read(u8 port, u32 reg);
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/**
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* msg_port_io_write - write a message port register using I/O opcode
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*
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* @port: port number on the message bus
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* @reg: register number within a port
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* @value: register value to write
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*/
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void msg_port_io_write(u8 port, u32 reg, u32 value);
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/* clrbits, setbits, clrsetbits macros for message port access */
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#define msg_port_normal_read msg_port_read
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#define msg_port_normal_write msg_port_write
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#define msg_port_generic_clrsetbits(type, port, reg, clr, set) \
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msg_port_##type##_write(port, reg, \
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(msg_port_##type##_read(port, reg) \
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& ~(clr)) | (set))
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#define msg_port_clrbits(port, reg, clr) \
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msg_port_generic_clrsetbits(normal, port, reg, clr, 0)
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#define msg_port_setbits(port, reg, set) \
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msg_port_generic_clrsetbits(normal, port, reg, 0, set)
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#define msg_port_clrsetbits(port, reg, clr, set) \
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msg_port_generic_clrsetbits(normal, port, reg, clr, set)
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#define msg_port_alt_clrbits(port, reg, clr) \
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msg_port_generic_clrsetbits(alt, port, reg, clr, 0)
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#define msg_port_alt_setbits(port, reg, set) \
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msg_port_generic_clrsetbits(alt, port, reg, 0, set)
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#define msg_port_alt_clrsetbits(port, reg, clr, set) \
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msg_port_generic_clrsetbits(alt, port, reg, clr, set)
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#define msg_port_io_clrbits(port, reg, clr) \
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msg_port_generic_clrsetbits(io, port, reg, clr, 0)
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#define msg_port_io_setbits(port, reg, set) \
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msg_port_generic_clrsetbits(io, port, reg, 0, set)
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#define msg_port_io_clrsetbits(port, reg, clr, set) \
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msg_port_generic_clrsetbits(io, port, reg, clr, set)
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#endif /* __ASSEMBLY__ */
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#endif /* _QUARK_MSG_PORT_H_ */
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