1#- 2# Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com> 3# All rights reserved. 4# 5# This software was developed by SRI International and the University of 6# Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 7# ("CTSRD"), as part of the DARPA CRASH research programme. 8# 9# Redistribution and use in source and binary forms, with or without 10# modification, are permitted provided that the following conditions 11# are met: 12# 1. Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# 2. Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in the 16# documentation and/or other materials provided with the distribution. 17# 18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28# SUCH DAMAGE. 29# 30# $FreeBSD$ 31# 32 33#include <machine/bus.h> 34 35#ifdef FDT 36#include <dev/fdt/fdt_common.h> 37#include <dev/ofw/ofw_bus.h> 38#include <dev/ofw/ofw_bus_subr.h> 39#endif 40 41#include <dev/xdma/xdma.h> 42 43INTERFACE xdma; 44 45# 46# Prepare a channel for cyclic transfer. 47# 48METHOD int channel_prep_cyclic { 49 device_t dev; 50 struct xdma_channel *xchan; 51}; 52 53# 54# Prepare a channel for memcpy transfer. 55# 56METHOD int channel_prep_memcpy { 57 device_t dev; 58 struct xdma_channel *xchan; 59}; 60 61# 62# Notify driver we have machine-dependend data. 63# 64METHOD int ofw_md_data { 65 device_t dev; 66 pcell_t *cells; 67 int ncells; 68 void **data; 69}; 70 71# 72# Allocate both virtual and harware channels. 73# 74METHOD int channel_alloc { 75 device_t dev; 76 struct xdma_channel *xchan; 77}; 78 79# 80# Free the channel, including descriptors. 81# 82METHOD int channel_free { 83 device_t dev; 84 struct xdma_channel *xchan; 85}; 86 87# 88# Begin, pause or terminate the channel operation. 89# 90METHOD int channel_control { 91 device_t dev; 92 struct xdma_channel *xchan; 93 int cmd; 94}; 95