174 lines
4.4 KiB
C
174 lines
4.4 KiB
C
/* $Id: imx23_apbx.c,v 1.1 2012/11/20 19:06:13 jkunz Exp $ */
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/*
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* Copyright (c) 2012 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 Petri Laakso.
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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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*
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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/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <arm/mainbus/mainbus.h>
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#include <arm/imx/imx23var.h>
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#include "locators.h"
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static int apbx_match(device_t, cfdata_t, void *);
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static void apbx_attach(device_t, device_t, void *);
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static int apbx_detach(device_t, int);
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static int apbx_activate(device_t, enum devact );
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static int apbx_search_cb(device_t, cfdata_t, const int *, void *);
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static int apbx_search_crit_cb(device_t, cfdata_t, const int *, void *);
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static int apbx_print(void *,const char *);
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struct apbx_softc {
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device_t sc_dev;
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device_t dmac; /* DMA controller device for this bus. */
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};
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CFATTACH_DECL3_NEW(apbx,
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sizeof(struct apbx_softc),
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apbx_match,
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apbx_attach,
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apbx_detach,
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apbx_activate,
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NULL,
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NULL,
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0);
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static int
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apbx_match(device_t parent, cfdata_t match, void *aux)
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{
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struct mainbus_attach_args *mb = aux;
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if ((mb->mb_iobase == APBX_BASE) && (mb->mb_iosize == APBX_SIZE))
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return 1;
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return 0;
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}
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static void
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apbx_attach(device_t parent, device_t self, void *aux)
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{
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struct apb_attach_args aa;
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static int apbx_attached = 0;
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if (apbx_attached)
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return;
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aa.aa_iot = &imx23_bus_space;
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aa.aa_dmat = &imx23_bus_dma_tag;
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aprint_normal("\n");
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config_search_ia(apbx_search_crit_cb, self, "apbx", &aa);
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config_search_ia(apbx_search_cb, self, "apbx", &aa);
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apbx_attached = 1;
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return;
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}
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static int
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apbx_detach(device_t self, int flags)
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{
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return 0;
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}
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static int
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apbx_activate(device_t self, enum devact act)
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{
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return EOPNOTSUPP;
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}
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/*
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* config_search_ia() callback function.
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*/
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static int
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apbx_search_cb(device_t parent, cfdata_t cf, const int *locs, void *aux)
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{
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struct apb_attach_args *aa = aux;
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aa->aa_name = cf->cf_name;
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aa->aa_addr = cf->cf_loc[APBXCF_ADDR];
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aa->aa_size = cf->cf_loc[APBXCF_SIZE];
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aa->aa_irq = cf->cf_loc[APBXCF_IRQ];
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if (config_match(parent, cf, aux) > 0)
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config_attach(parent, cf, aux, apbx_print);
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return 0;
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}
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/*
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* config_search_ia() callback function which only applies to critical devices.
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*/
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static int
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apbx_search_crit_cb(device_t parent, cfdata_t cf, const int *locs, void *aux)
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{
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struct apb_attach_args *aa = aux;
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/* Return if not critical device. */
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if ((strcmp(cf->cf_name, "timrot") != 0)
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&& (strcmp(cf->cf_name, "apbdma") != 0))
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return 0;
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aa->aa_name = cf->cf_name;
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aa->aa_addr = cf->cf_loc[APBXCF_ADDR];
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aa->aa_size = cf->cf_loc[APBXCF_SIZE];
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aa->aa_irq = cf->cf_loc[APBXCF_IRQ];
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if (config_match(parent, cf, aux) > 0)
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config_attach(parent, cf, aux, apbx_print);
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return 0;
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}
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/*
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* Called from config_attach()
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*/
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static int
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apbx_print(void *aux, const char *name __unused)
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{
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struct apb_attach_args *aa = aux;
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if (aa->aa_addr != APBXCF_ADDR_DEFAULT) {
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aprint_normal(" addr 0x%lx", aa->aa_addr);
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if (aa->aa_size > APBXCF_SIZE_DEFAULT)
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aprint_normal("-0x%lx", aa->aa_addr + aa->aa_size-1);
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}
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if (aa->aa_irq != APBXCF_IRQ_DEFAULT)
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aprint_normal(" irq %d", aa->aa_irq);
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return UNCONF;
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}
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