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      1 /*	$NetBSD: ixp425_pci_dma.c,v 1.7 2022/09/27 06:36:43 skrll Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2003
      5  *	Ichiro FUKUHARA <ichiro (at) ichiro.org>.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
     21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: ixp425_pci_dma.c,v 1.7 2022/09/27 06:36:43 skrll Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/systm.h>
     35 #include <sys/device.h>
     36 #include <sys/mbuf.h>
     37 
     38 #include <uvm/uvm_extern.h>
     39 
     40 #define _ARM32_BUS_DMA_PRIVATE
     41 #include <sys/bus.h>
     42 
     43 #include <arm/xscale/ixp425reg.h>
     44 #include <arm/xscale/ixp425var.h>
     45 
     46 void
     47 ixp425_pci_dma_init(struct ixp425_softc *sc)
     48 {
     49 	extern paddr_t physical_start, physical_end;
     50 
     51 	bus_dma_tag_t dmat = &sc->ia_pci_dmat;
     52 	struct arm32_dma_range *dr = &sc->ia_pci_dma_range;
     53 
     54 	dmat->_ranges = dr;
     55 	dmat->_nranges = 1;
     56 
     57 	dr->dr_sysbase = physical_start;
     58 	dr->dr_busbase = physical_start;
     59 	dr->dr_len = physical_end - physical_start;
     60 
     61 	dmat->_dmamap_create = _bus_dmamap_create;
     62 	dmat->_dmamap_destroy = _bus_dmamap_destroy;
     63 	dmat->_dmamap_load = _bus_dmamap_load;
     64 	dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
     65 	dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
     66 	dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
     67 	dmat->_dmamap_unload = _bus_dmamap_unload;
     68 	dmat->_dmamap_sync_pre = _bus_dmamap_sync;
     69 	dmat->_dmamap_sync_post = NULL;
     70 
     71 	dmat->_dmamem_alloc = _bus_dmamem_alloc;
     72 	dmat->_dmamem_free = _bus_dmamem_free;
     73 	dmat->_dmamem_map = _bus_dmamem_map;
     74 	dmat->_dmamem_unmap = _bus_dmamem_unmap;
     75 	dmat->_dmamem_mmap = _bus_dmamem_mmap;
     76 
     77 	dmat->_dmatag_subregion = _bus_dmatag_subregion;
     78 	dmat->_dmatag_destroy = _bus_dmatag_destroy;
     79 }
     80