2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
142 lines
4.4 KiB
C
142 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* RapidIO configuration space access support
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*
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* Copyright 2005 MontaVista Software, Inc.
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* Matt Porter <mporter@kernel.crashing.org>
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*/
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#include <linux/rio.h>
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#include <linux/module.h>
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/*
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* Wrappers for all RIO configuration access functions. They just check
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* alignment and call the low-level functions pointed to by rio_mport->ops.
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*/
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#define RIO_8_BAD 0
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#define RIO_16_BAD (offset & 1)
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#define RIO_32_BAD (offset & 3)
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/**
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* RIO_LOP_READ - Generate rio_local_read_config_* functions
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* @size: Size of configuration space read (8, 16, 32 bits)
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* @type: C type of value argument
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* @len: Length of configuration space read (1, 2, 4 bytes)
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*
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* Generates rio_local_read_config_* functions used to access
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* configuration space registers on the local device.
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*/
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#define RIO_LOP_READ(size,type,len) \
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int __rio_local_read_config_##size \
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(struct rio_mport *mport, u32 offset, type *value) \
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{ \
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int res; \
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u32 data = 0; \
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if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
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res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
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*value = (type)data; \
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return res; \
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}
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/**
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* RIO_LOP_WRITE - Generate rio_local_write_config_* functions
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* @size: Size of configuration space write (8, 16, 32 bits)
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* @type: C type of value argument
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* @len: Length of configuration space write (1, 2, 4 bytes)
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*
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* Generates rio_local_write_config_* functions used to access
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* configuration space registers on the local device.
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*/
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#define RIO_LOP_WRITE(size,type,len) \
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int __rio_local_write_config_##size \
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(struct rio_mport *mport, u32 offset, type value) \
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{ \
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if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
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return mport->ops->lcwrite(mport, mport->id, offset, len, value);\
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}
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RIO_LOP_READ(8, u8, 1)
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RIO_LOP_READ(16, u16, 2)
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RIO_LOP_READ(32, u32, 4)
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RIO_LOP_WRITE(8, u8, 1)
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RIO_LOP_WRITE(16, u16, 2)
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RIO_LOP_WRITE(32, u32, 4)
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EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
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EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
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EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
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EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
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EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
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EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
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/**
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* RIO_OP_READ - Generate rio_mport_read_config_* functions
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* @size: Size of configuration space read (8, 16, 32 bits)
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* @type: C type of value argument
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* @len: Length of configuration space read (1, 2, 4 bytes)
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*
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* Generates rio_mport_read_config_* functions used to access
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* configuration space registers on the local device.
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*/
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#define RIO_OP_READ(size,type,len) \
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int rio_mport_read_config_##size \
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(struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
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{ \
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int res; \
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u32 data = 0; \
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if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
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res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
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*value = (type)data; \
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return res; \
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}
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/**
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* RIO_OP_WRITE - Generate rio_mport_write_config_* functions
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* @size: Size of configuration space write (8, 16, 32 bits)
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* @type: C type of value argument
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* @len: Length of configuration space write (1, 2, 4 bytes)
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*
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* Generates rio_mport_write_config_* functions used to access
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* configuration space registers on the local device.
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*/
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#define RIO_OP_WRITE(size,type,len) \
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int rio_mport_write_config_##size \
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(struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
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{ \
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if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
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return mport->ops->cwrite(mport, mport->id, destid, hopcount, \
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offset, len, value); \
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}
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RIO_OP_READ(8, u8, 1)
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RIO_OP_READ(16, u16, 2)
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RIO_OP_READ(32, u32, 4)
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RIO_OP_WRITE(8, u8, 1)
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RIO_OP_WRITE(16, u16, 2)
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RIO_OP_WRITE(32, u32, 4)
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EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
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EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
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EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
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EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
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EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
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EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
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/**
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* rio_mport_send_doorbell - Send a doorbell message
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*
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* @mport: RIO master port
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* @destid: RIO device destination ID
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* @data: Doorbell message data
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*
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* Send a doorbell message to a RIO device. The doorbell message
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* has a 16-bit info field provided by the data argument.
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*/
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int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
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{
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return mport->ops->dsend(mport, mport->id, destid, data);
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}
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EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);
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