2000-06-10 16:56:45 +04:00
|
|
|
/* $NetBSD: jazzdmatlbreg.h,v 1.2 2000/06/10 12:56:46 soda Exp $ */
|
2000-06-09 09:22:22 +04:00
|
|
|
/* $OpenBSD: dma.h,v 1.3 1997/04/19 17:19:51 pefo Exp $ */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (c) 1996 Per Fogelstrom
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
|
|
|
* must display the following acknowledgement:
|
|
|
|
|
* This product includes software developed by Per Fogelstrom.
|
|
|
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
|
|
|
* derived from this software without specific prior written permission
|
|
|
|
|
*
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The R4030 system has four DMA channels capable of scatter/gather
|
|
|
|
|
* and full memory addressing. The maximum transfer length is 1Mb.
|
|
|
|
|
* DMA snopes the L2 cache so no precaution is required. However
|
|
|
|
|
* if L1 cache is cached 'write back' the processor is responible
|
|
|
|
|
* for flushing/invalidating it.
|
|
|
|
|
*
|
|
|
|
|
* The DMA mapper has up to 4096 page descriptors.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* XXX */
|
2000-06-10 16:56:45 +04:00
|
|
|
#define PICA_TL_BASE 0xa0180000 /* Base of tl register area */
|
2000-06-09 09:22:22 +04:00
|
|
|
#define JAZZ_DMATLB_SIZE 0x00008000 /* Size of tl register area */
|
|
|
|
|
|
|
|
|
|
#define JAZZ_DMATLBREG_MAP 0x00 /* DMA transl. table base */
|
|
|
|
|
#define JAZZ_DMATLBREG_LIMIT 0x08 /* DMA transl. table limit */
|
|
|
|
|
#define JAZZ_DMATLBREG_IVALID 0x10 /* DMA transl. cache inval */
|
|
|
|
|
#define JAZZ_DMATLB_REGSIZE 0x18 /* size of bus_space region */
|
|
|
|
|
|
|
|
|
|
#define JAZZ_DMA_PAGE_SIZE 0x00001000 /* Address page size */
|
|
|
|
|
#define JAZZ_DMA_PAGE_OFFS (JAZZ_DMA_PAGE_SIZE-1) /* page offset */
|
|
|
|
|
#define JAZZ_DMA_PAGE_NUM (~JAZZ_DMA_PAGE_OFFS) /* page number */
|
|
|
|
|
|
|
|
|
|
#define jazz_dma_page_offs(x) \
|
|
|
|
|
((int)(x) & JAZZ_DMA_PAGE_OFFS)
|
|
|
|
|
#define jazz_dma_page_round(x) \
|
|
|
|
|
(((int)(x) + JAZZ_DMA_PAGE_OFFS) & JAZZ_DMA_PAGE_NUM)
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* DMA TLB entry
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
typedef struct jazz_dma_pte {
|
|
|
|
|
u_int32_t lo_addr; /* Low part of translation addr */
|
|
|
|
|
u_int32_t hi_addr; /* High part of translation addr */
|
|
|
|
|
} jazz_dma_pte_t;
|
