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      1 /*	$NetBSD: smdk2800_pci.c,v 1.6 2020/06/17 07:02:31 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002 Fujitsu Component Limited
      5  * Copyright (c) 2002 Genetec Corporation
      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  * 3. Neither the name of The Fujitsu Component Limited nor the name of
     17  *    Genetec corporation may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
     21  * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     22  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     24  * DISCLAIMED.  IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
     25  * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
     28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     29  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Platform specific part for S3C2800 PCI support on SMDK2800
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: smdk2800_pci.c,v 1.6 2020/06/17 07:02:31 thorpej Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/types.h>
     44 #include <sys/device.h>
     45 #include <sys/systm.h>
     46 
     47 #define _ARM32_BUS_DMA_PRIVATE
     48 #include <sys/bus.h>
     49 
     50 #include <dev/pci/pcivar.h>
     51 #include <dev/pci/pciconf.h>
     52 
     53 #include <arm/s3c2xx0/s3c2800var.h>
     54 
     55 static struct arm32_dma_range smdk2800_dma_ranges[1];
     56 
     57 static struct arm32_bus_dma_tag smdk2800_bus_dma = {
     58 	NULL,			/* _ranges: set by init routine */
     59 	0,			/* _nranges */
     60 
     61 	NULL,			/* _cookie */
     62 
     63 	_bus_dmamap_create,
     64 	_bus_dmamap_destroy,
     65 	_bus_dmamap_load,
     66 	_bus_dmamap_load_mbuf,
     67 	_bus_dmamap_load_uio,
     68 	_bus_dmamap_load_raw,
     69 	_bus_dmamap_unload,
     70 	_bus_dmamap_sync,
     71 	NULL,			/* sync_post */
     72 
     73 	_bus_dmamem_alloc,
     74 	_bus_dmamem_free,
     75 	_bus_dmamem_map,
     76 	_bus_dmamem_unmap,
     77 	_bus_dmamem_mmap,
     78 };
     79 
     80 bus_dma_tag_t
     81 s3c2800_pci_dma_init(void)
     82 {
     83 	extern paddr_t physical_start, physical_end;
     84 
     85 	smdk2800_dma_ranges[0].dr_sysbase = physical_start;
     86 	smdk2800_dma_ranges[0].dr_busbase =
     87 	    0x80000000 + physical_start - S3C2800_DBANK0_START;
     88 	smdk2800_dma_ranges[0].dr_len = physical_end - physical_start;
     89 
     90 	smdk2800_bus_dma._ranges = smdk2800_dma_ranges;
     91 	smdk2800_bus_dma._nranges = 1;
     92 
     93 	return &smdk2800_bus_dma;
     94 }
     95