arc/jazz/jazzdmatlbreg.h

1.2.6.2  bouyer /*	$NetBSD: jazzdmatlbreg.h,v 1.2.6.2 2000/11/20 20:00:40 bouyer Exp $	*/
1.2.6.2  bouyer /*	$OpenBSD: dma.h,v 1.3 1997/04/19 17:19:51 pefo Exp $	*/
1.2.6.2  bouyer
1.2.6.2  bouyer /*
1.2.6.2  bouyer  * Copyright (c) 1996 Per Fogelstrom
1.2.6.2  bouyer  * All rights reserved.
1.2.6.2  bouyer  *
1.2.6.2  bouyer  * Redistribution and use in source and binary forms, with or without
1.2.6.2  bouyer  * modification, are permitted provided that the following conditions
1.2.6.2  bouyer  * are met:
1.2.6.2  bouyer  * 1. Redistributions of source code must retain the above copyright
1.2.6.2  bouyer  *    notice, this list of conditions and the following disclaimer.
1.2.6.2  bouyer  * 2. Redistributions in binary form must reproduce the above copyright
1.2.6.2  bouyer  *    notice, this list of conditions and the following disclaimer in the
1.2.6.2  bouyer  *    documentation and/or other materials provided with the distribution.
1.2.6.2  bouyer  * 3. All advertising materials mentioning features or use of this software
1.2.6.2  bouyer  *    must display the following acknowledgement:
1.2.6.2  bouyer  *      This product includes software developed by Per Fogelstrom.
1.2.6.2  bouyer  * 4. The name of the author may not be used to endorse or promote products
1.2.6.2  bouyer  *    derived from this software without specific prior written permission
1.2.6.2  bouyer  *
1.2.6.2  bouyer  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.2.6.2  bouyer  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1.2.6.2  bouyer  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.2.6.2  bouyer  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
1.2.6.2  bouyer  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
1.2.6.2  bouyer  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.2.6.2  bouyer  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.2.6.2  bouyer  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.2.6.2  bouyer  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
1.2.6.2  bouyer  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.2.6.2  bouyer  */
1.2.6.2  bouyer
1.2.6.2  bouyer /*
1.2.6.2  bouyer  *	The R4030 system has four DMA channels capable of scatter/gather
1.2.6.2  bouyer  *	and full memory addressing. The maximum transfer length is 1Mb.
1.2.6.2  bouyer  *	DMA snopes the L2 cache so no precaution is required. However
1.2.6.2  bouyer  *	if L1 cache is cached 'write back' the processor is responible
1.2.6.2  bouyer  *	for flushing/invalidating it.
1.2.6.2  bouyer  *
1.2.6.2  bouyer  *	The DMA mapper has up to 4096 page descriptors.
1.2.6.2  bouyer  */
1.2.6.2  bouyer
1.2.6.2  bouyer /* XXX */
1.2.6.2  bouyer #define	PICA_TL_BASE		0xa0180000	/* Base of tl register area */
1.2.6.2  bouyer #define JAZZ_DMATLB_SIZE	0x00008000	/* Size of tl register area */
1.2.6.2  bouyer
1.2.6.2  bouyer #define JAZZ_DMATLBREG_MAP	0x00		/* DMA transl. table base */
1.2.6.2  bouyer #define JAZZ_DMATLBREG_LIMIT	0x08		/* DMA transl. table limit */
1.2.6.2  bouyer #define JAZZ_DMATLBREG_IVALID	0x10		/* DMA transl. cache inval */
1.2.6.2  bouyer #define JAZZ_DMATLB_REGSIZE	0x18		/* size of bus_space region */
1.2.6.2  bouyer
1.2.6.2  bouyer #define JAZZ_DMA_PAGE_SIZE	0x00001000		/* Address page size */
1.2.6.2  bouyer #define JAZZ_DMA_PAGE_OFFS	(JAZZ_DMA_PAGE_SIZE-1)	/* page offset */
1.2.6.2  bouyer #define JAZZ_DMA_PAGE_NUM	(~JAZZ_DMA_PAGE_OFFS)	/* page number */
1.2.6.2  bouyer
1.2.6.2  bouyer #define jazz_dma_page_offs(x)	\
1.2.6.2  bouyer 	((int)(x) & JAZZ_DMA_PAGE_OFFS)
1.2.6.2  bouyer #define jazz_dma_page_round(x)	\
1.2.6.2  bouyer 	(((int)(x) + JAZZ_DMA_PAGE_OFFS) & JAZZ_DMA_PAGE_NUM)
1.2.6.2  bouyer
1.2.6.2  bouyer /*
1.2.6.2  bouyer  *  DMA TLB entry
1.2.6.2  bouyer  */
1.2.6.2  bouyer
1.2.6.2  bouyer typedef struct jazz_dma_pte {
1.2.6.2  bouyer 	u_int32_t	lo_addr;	/* Low part of translation addr */
1.2.6.2  bouyer 	u_int32_t	hi_addr;	/* High part of translation addr */
1.2.6.2  bouyer } jazz_dma_pte_t;