/*      $NetBSD: octeon_dma.c,v 1.3 2019/12/15 16:48:26 tsutsui Exp $   */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

/*
* Platform-specific DMA support for the MIPS OCTEON.  Copied from MALTA code.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: octeon_dma.c,v 1.3 2019/12/15 16:48:26 tsutsui Exp $");

#include <sys/param.h>
#include <sys/systm.h>

#include <mips/cpuregs.h>

#define _MIPS_BUS_DMA_PRIVATE
#include <sys/bus.h>

#include <mips/cavium/octeonvar.h>

void
octeon_dma_init(struct octeon_config *mcp)
{
       bus_dma_tag_t t;

       /* XXX need 32bit tag? */
       t = &mcp->mc_iobus_dmat;
       t->_cookie = mcp;
       t->_wbase = 0;
       t->_bounce_alloc_lo = 0;
       t->_bounce_alloc_hi = 0;
       t->_dmamap_ops = mips_bus_dmamap_ops;
       t->_dmamem_ops = mips_bus_dmamem_ops;
       t->_dmatag_ops = mips_bus_dmatag_ops;

       /* XXX struct copy */
       mcp->mc_bootbus_dmat = mcp->mc_iobus_dmat;
       mcp->mc_core1_dmat = mcp->mc_iobus_dmat;
       mcp->mc_fpa_dmat = mcp->mc_iobus_dmat;

#ifdef __mips_n32
       mcp->mc_fpa_dmat._bounce_alloc_hi = round_page(MIPS_PHYS_MASK);
#endif
}