Differential D8807 Diff 23146 head/sys/dev/xdma/xdma_if.m

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head/sys/dev/xdma/xdma_if.m

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				#-
				# 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;
				};