// SPDX-License-Identifier: GPL-2.0-or-later /* * RapidIO configuration space access support * * Copyright 2005 MontaVista Software, Inc. * Matt Porter <mporter@kernel.crashing.org>
*/
#include <linux/rio.h> #include <linux/module.h>
#include <linux/rio_drv.h>
/* * Wrappers for all RIO configuration access functions. They just check * alignment and call the low-level functions pointed to by rio_mport->ops.
*/
/** * RIO_LOP_READ - Generate rio_local_read_config_* functions * @size: Size of configuration space read (8, 16, 32 bits) * @type: C type of value argument * @len: Length of configuration space read (1, 2, 4 bytes) * * Generates rio_local_read_config_* functions used to access * configuration space registers on the local device.
*/ #define RIO_LOP_READ(size,type,len) \ int __rio_local_read_config_##size \
(struct rio_mport *mport, u32 offset, type *value) \
{ \ int res; \
u32 data = 0; \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
*value = (type)data; \ return res; \
}
/** * RIO_LOP_WRITE - Generate rio_local_write_config_* functions * @size: Size of configuration space write (8, 16, 32 bits) * @type: C type of value argument * @len: Length of configuration space write (1, 2, 4 bytes) * * Generates rio_local_write_config_* functions used to access * configuration space registers on the local device.
*/ #define RIO_LOP_WRITE(size,type,len) \ int __rio_local_write_config_##size \
(struct rio_mport *mport, u32 offset, type value) \
{ \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \ return mport->ops->lcwrite(mport, mport->id, offset, len, value);\
}
/** * rio_mport_send_doorbell - Send a doorbell message * * @mport: RIO master port * @destid: RIO device destination ID * @data: Doorbell message data * * Send a doorbell message to a RIO device. The doorbell message * has a 16-bit info field provided by the data argument.
*/ int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
{ return mport->ops->dsend(mport, mport->id, destid, data);
}
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