85debf7f6e
xDMA is a DMA framework designed to abstract the interaction between device drivers and DMA engines. Project wiki: https://wiki.freebsd.org/xdma Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D8807
95 lines
2.5 KiB
Objective-C
95 lines
2.5 KiB
Objective-C
#-
|
|
# Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com>
|
|
# All rights reserved.
|
|
#
|
|
# This software was developed by SRI International and the University of
|
|
# Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
|
|
# ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
#
|
|
# 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#ifdef FDT
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
#endif
|
|
|
|
#include <dev/xdma/xdma.h>
|
|
|
|
INTERFACE xdma;
|
|
|
|
#
|
|
# Prepare a channel for cyclic transfer.
|
|
#
|
|
METHOD int channel_prep_cyclic {
|
|
device_t dev;
|
|
struct xdma_channel *xchan;
|
|
};
|
|
|
|
#
|
|
# Prepare a channel for memcpy transfer.
|
|
#
|
|
METHOD int channel_prep_memcpy {
|
|
device_t dev;
|
|
struct xdma_channel *xchan;
|
|
};
|
|
|
|
#
|
|
# Notify driver we have machine-dependend data.
|
|
#
|
|
METHOD int ofw_md_data {
|
|
device_t dev;
|
|
pcell_t *cells;
|
|
int ncells;
|
|
void **data;
|
|
};
|
|
|
|
#
|
|
# Allocate both virtual and harware channels.
|
|
#
|
|
METHOD int channel_alloc {
|
|
device_t dev;
|
|
struct xdma_channel *xchan;
|
|
};
|
|
|
|
#
|
|
# Free the channel, including descriptors.
|
|
#
|
|
METHOD int channel_free {
|
|
device_t dev;
|
|
struct xdma_channel *xchan;
|
|
};
|
|
|
|
#
|
|
# Begin, pause or terminate the channel operation.
|
|
#
|
|
METHOD int channel_control {
|
|
device_t dev;
|
|
struct xdma_channel *xchan;
|
|
int cmd;
|
|
};
|