1 /* $NetBSD: iopaauvar.h,v 1.4 2002/08/04 02:26:18 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _XSCALE_IOPAAUVAR_H_ 39 #define _XSCALE_IOPAAUVAR_H_ 40 41 #include <sys/pool.h> 42 #include <dev/dmover/dmovervar.h> 43 44 #define AAU_MAX_INPUTS 8 45 46 /* 47 * Due to the way the AAU's descriptors work, the DMA segments for 48 * the inputs and output must all be the same length. For now, we 49 * will enforce this by requiring all I/O to be page aligned, and 50 * and not let it cross a page boundary. 51 * 52 * We could easily shrink this to any power of two. 53 */ 54 #define AAU_IO_BOUNDARY 4096 55 56 struct iopaau_softc { 57 struct device sc_dev; 58 struct dmover_backend sc_dmb; 59 60 struct dmover_request *sc_running; 61 62 bus_space_tag_t sc_st; 63 bus_space_handle_t sc_sh; 64 bus_dma_tag_t sc_dmat; 65 66 void *sc_firstdesc; 67 void *sc_lastdesc; 68 uint32_t sc_firstdesc_pa; 69 70 bus_dmamap_t sc_map_out; 71 bus_dmamap_t sc_map_in[AAU_MAX_INPUTS]; 72 }; 73 74 struct iopaau_function { 75 int (*af_setup)(struct iopaau_softc *, struct dmover_request *); 76 struct pool_cache *af_desc_cache; 77 }; 78 79 extern struct pool_cache iopaau_desc_4_cache; 80 extern struct pool_cache iopaau_desc_8_cache; 81 82 void iopaau_attach(struct iopaau_softc *); 83 void iopaau_process(struct dmover_backend *); 84 int iopaau_intr(void *); 85 86 int iopaau_func_zero_setup(struct iopaau_softc *, 87 struct dmover_request *); 88 int iopaau_func_fill8_setup(struct iopaau_softc *, 89 struct dmover_request *); 90 int iopaau_func_xor_setup(struct iopaau_softc *, 91 struct dmover_request *); 92 93 void iopaau_desc_free(struct pool_cache *, void *); 94 95 #endif /* _XSCALE_IOPAAUVAR_H_ */ 96