diff options
Diffstat (limited to 'sys/arch/sgi/hpc/hpcdma.h')
| -rw-r--r-- | sys/arch/sgi/hpc/hpcdma.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sys/arch/sgi/hpc/hpcdma.h b/sys/arch/sgi/hpc/hpcdma.h new file mode 100644 index 00000000000..bca5fc5b171 --- /dev/null +++ b/sys/arch/sgi/hpc/hpcdma.h @@ -0,0 +1,63 @@ +/* $OpenBSD: hpcdma.h,v 1.1 2012/03/28 20:44:23 miod Exp $ */ +/* $NetBSD: hpcdma.h,v 1.11 2011/07/01 18:53:46 dyoung Exp $ */ + +/* + * Copyright (c) 2001 Wayne Knowles + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Wayne Knowles + * + * 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 the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +struct hpc_dma_softc { + bus_space_tag_t sc_bst; + bus_space_handle_t sc_bsh; + bus_dma_tag_t sc_dmat; + + uint32_t sc_flags; +#define HPCDMA_READ 0x20 /* direction of transfer */ +#define HPCDMA_LOADED 0x40 /* bus_dmamap loaded */ +#define HPCDMA_ACTIVE 0x80 /* DMA engine is busy */ + uint32_t sc_dmacmd; + int sc_ndesc; + bus_dmamap_t sc_dmamap; + struct hpc_dma_desc *sc_desc_kva; /* Virtual address */ + bus_addr_t sc_desc_pa; /* DMA address */ + ssize_t sc_dlen; /* number of bytes transfered */ + struct hpc_values *hpc; /* constants for HPC1/3 */ +}; + + +void hpcdma_init(struct hpc_attach_args *, struct hpc_dma_softc *, int); +void hpcdma_sglist_create(struct hpc_dma_softc *, bus_dmamap_t); +void hpcdma_cntl(struct hpc_dma_softc *, uint32_t); +void hpcdma_reset(struct hpc_dma_softc *); +void hpcdma_flush(struct hpc_dma_softc *); |