hpcdma.h revision 1.2.2.3
1 1.2.2.3 nathanw /* $NetBSD: hpcdma.h,v 1.2.2.3 2002/04/01 07:42:22 nathanw Exp $ */ 2 1.2.2.2 nathanw 3 1.2.2.2 nathanw /* 4 1.2.2.2 nathanw * Copyright (c) 2001 Wayne Knowles 5 1.2.2.2 nathanw * All rights reserved. 6 1.2.2.2 nathanw * 7 1.2.2.2 nathanw * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 nathanw * by Wayne Knowles 9 1.2.2.2 nathanw * 10 1.2.2.2 nathanw * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 nathanw * modification, are permitted provided that the following conditions 12 1.2.2.2 nathanw * are met: 13 1.2.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 nathanw * documentation and/or other materials provided with the distribution. 18 1.2.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 19 1.2.2.2 nathanw * must display the following acknowledgement: 20 1.2.2.2 nathanw * This product includes software developed by the NetBSD 21 1.2.2.2 nathanw * Foundation, Inc. and its contributors. 22 1.2.2.2 nathanw * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.2.2 nathanw * contributors may be used to endorse or promote products derived 24 1.2.2.2 nathanw * from this software without specific prior written permission. 25 1.2.2.2 nathanw * 26 1.2.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.2.2 nathanw * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 37 1.2.2.2 nathanw */ 38 1.2.2.2 nathanw 39 1.2.2.2 nathanw #ifndef _SGIMIPS_HPC_DMA_H 40 1.2.2.2 nathanw #define _SGIMIPS_HPC_DMA_H 41 1.2.2.2 nathanw 42 1.2.2.2 nathanw #include <machine/bus.h> 43 1.2.2.2 nathanw 44 1.2.2.2 nathanw struct hpc_dma_softc { 45 1.2.2.2 nathanw bus_space_tag_t sc_bst; 46 1.2.2.2 nathanw bus_space_handle_t sc_bsh; 47 1.2.2.2 nathanw bus_dma_tag_t sc_dmat; 48 1.2.2.2 nathanw 49 1.2.2.2 nathanw u_int32_t sc_flags; 50 1.2.2.2 nathanw #define HPCDMA_READ 0x20 /* direction of transfer */ 51 1.2.2.2 nathanw #define HPCDMA_LOADED 0x40 /* bus_dmamap loaded */ 52 1.2.2.2 nathanw #define HPCDMA_ACTIVE 0x80 /* DMA engine is busy */ 53 1.2.2.2 nathanw u_int32_t sc_dmacmd; 54 1.2.2.2 nathanw int sc_ndesc; 55 1.2.2.2 nathanw bus_dmamap_t sc_dmamap; 56 1.2.2.3 nathanw struct hpc_dma_desc *sc_desc_kva; /* Virtual address */ 57 1.2.2.3 nathanw struct hpc_dma_desc *sc_desc_pa; /* Physical address */ 58 1.2.2.3 nathanw ssize_t sc_dlen; /* number of bytes transfered */ 59 1.2.2.2 nathanw }; 60 1.2.2.2 nathanw 61 1.2.2.2 nathanw 62 1.2.2.2 nathanw void hpcdma_init(struct hpc_attach_args *, struct hpc_dma_softc *, int); 63 1.2.2.2 nathanw void hpcdma_sglist_create(struct hpc_dma_softc *, bus_dmamap_t); 64 1.2.2.2 nathanw void hpcdma_cntl(struct hpc_dma_softc *, u_int32_t); 65 1.2.2.2 nathanw void hpcdma_reset(struct hpc_dma_softc *); 66 1.2.2.2 nathanw void hpcdma_flush(struct hpc_dma_softc *); 67 1.2.2.2 nathanw 68 1.2.2.2 nathanw #endif /* _SGIMIPS_HPC_DMA_H */ 69
Indexes created Tue Oct 07 03:09:49 GMT 2025