190 lines
5.4 KiB
C
190 lines
5.4 KiB
C
/* $NetBSD: elb.c,v 1.3 2003/07/25 11:44:20 scw Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Juergen Hannken-Illjes.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: elb.c,v 1.3 2003/07/25 11:44:20 scw Exp $");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/extent.h>
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#include <machine/explora.h>
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#define _POWERPC_BUS_DMA_PRIVATE
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#include <machine/bus.h>
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#include <powerpc/ibm4xx/dcr403cgx.h>
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#include <evbppc/explora/dev/elbvar.h>
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struct elb_dev {
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const char *elb_name;
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int elb_addr;
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int elb_addr2;
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int elb_irq;
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bus_space_tag_t elb_bt;
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};
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static int elb_match(struct device *, struct cfdata *, void *);
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static void elb_attach(struct device *, struct device *, void *);
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static int elb_print(void *, const char *);
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static struct powerpc_bus_space elb_tag = {
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_BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE | 1, /* stride 1 */
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0x00000000,
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BASE_PCKBC,
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BASE_PCKBC + 0x6ff
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};
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static char elb_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
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__attribute__((aligned(8)));
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static int elb_tag_init_done;
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static struct powerpc_bus_space elb_fb_tag = {
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_BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE,
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0x00000000,
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BASE_FB,
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BASE_FB2 + SIZE_FB - 1
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};
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static char elbfb_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
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__attribute__((aligned(8)));
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static int elbfb_tag_init_done;
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/*
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* DMA struct, nothing special.
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*/
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static struct powerpc_bus_dma_tag elb_bus_dma_tag = {
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0, /* _bounce_thresh */
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_bus_dmamap_create,
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_bus_dmamap_destroy,
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_bus_dmamap_load,
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_bus_dmamap_load_mbuf,
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_bus_dmamap_load_uio,
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_bus_dmamap_load_raw,
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_bus_dmamap_unload,
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_bus_dmamap_sync,
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_bus_dmamem_alloc,
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_bus_dmamem_free,
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_bus_dmamem_map,
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_bus_dmamem_unmap,
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_bus_dmamem_mmap,
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_bus_dma_phys_to_bus_mem_generic,
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_bus_dma_bus_mem_to_phys_generic,
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};
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static struct elb_dev elb_devs[] = {
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{ "cpu", 0, 0, -1, NULL },
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{ "pckbc", BASE_PCKBC, BASE_PCKBC2, 31, &elb_tag },
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{ "com", BASE_COM, 0, 30, &elb_tag },
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{ "lpt", BASE_LPT, 0, -1, &elb_tag },
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{ "fb", BASE_FB, BASE_FB2, -1, &elb_fb_tag },
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{ "le", BASE_LE, 0, 28, &elb_fb_tag },
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};
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CFATTACH_DECL(elb, sizeof(struct device),
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elb_match, elb_attach, NULL, NULL);
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/*
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* Probe for the elb; always succeeds.
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*/
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static int
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elb_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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return (1);
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}
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/*
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* Attach the Explora local bus.
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*/
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static void
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elb_attach(struct device *parent, struct device *self, void *aux)
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{
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struct elb_attach_args eaa;
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int i;
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printf("\n");
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for (i = 0; i < sizeof(elb_devs)/sizeof(elb_devs[0]); i++) {
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eaa.elb_name = elb_devs[i].elb_name;
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eaa.elb_bt = elb_get_bus_space_tag(elb_devs[i].elb_addr);
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eaa.elb_dmat = &elb_bus_dma_tag;
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eaa.elb_base = elb_devs[i].elb_addr;
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eaa.elb_base2 = elb_devs[i].elb_addr2;
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eaa.elb_irq = elb_devs[i].elb_irq;
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(void) config_found_sm(self, &eaa, elb_print, NULL);
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}
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}
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static int
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elb_print(void *aux, const char *pnp)
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{
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struct elb_attach_args *eaa = aux;
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if (pnp)
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aprint_normal("%s at %s", eaa->elb_name, pnp);
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if (eaa->elb_irq != -1)
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aprint_normal(" irq %d", eaa->elb_irq);
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return (UNCONF);
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}
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bus_space_tag_t
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elb_get_bus_space_tag(bus_addr_t addr)
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{
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if ((addr & 0xff000000) == 0x74000000) {
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if (!elb_tag_init_done) {
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if (bus_space_init(&elb_tag, "elbtag",
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elb_ex_storage, sizeof(elb_ex_storage)))
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panic("elb_get_bus_space_tag: elb_tag");
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elb_tag_init_done = 1;
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}
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return (&elb_tag);
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} else {
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if (!elbfb_tag_init_done) {
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if (bus_space_init(&elb_fb_tag, "elbfbtag",
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elbfb_ex_storage, sizeof(elbfb_ex_storage)))
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panic("elb_get_bus_space_tag: elb_fb_tag");
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elbfb_tag_init_done = 1;
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}
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return (&elb_fb_tag);
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}
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}
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