freebsd-dev/sys/dev/proto/proto.h
Marcel Moolenaar 4f027abddb DMA support part 1: DMA tag create & destroy
Create a special resource (= device special file) for management
of tags and maps, as well as for mapping memory into the address
space. DMA resources are managed using the PROTO_IOC_BUSDMA ioctl.
Part 1 implements tag creation, derivation and destruction.
2015-06-06 16:09:25 +00:00

68 lines
2.0 KiB
C

/*-
* Copyright (c) 2014 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _DEV_PROTO_H_
#define _DEV_PROTO_H_
#define PROTO_RES_MAX 16
#define PROTO_RES_UNUSED 0
#define PROTO_RES_PCICFG 10
#define PROTO_RES_BUSDMA 11
struct proto_res {
int r_type;
int r_rid;
union {
struct resource *res;
void *busdma;
} r_d;
u_long r_size;
union {
void *cookie;
struct cdev *cdev;
} r_u;
uintptr_t r_opened;
};
struct proto_softc {
device_t sc_dev;
struct proto_res sc_res[PROTO_RES_MAX];
int sc_rescnt;
};
extern devclass_t proto_devclass;
extern char proto_driver_name[];
int proto_add_resource(struct proto_softc *, int, int, struct resource *);
int proto_attach(device_t dev);
int proto_detach(device_t dev);
#endif /* _DEV_PROTO_H_ */