160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/* $NetBSD: imx6_axi.c,v 1.2 2015/12/31 12:14:01 ryo Exp $ */
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/*
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* Copyright (c) 2014 Ryo Shimizu <ryo@nerv.org>
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* All rights reserved.
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* 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: imx6_axi.c,v 1.2 2015/12/31 12:14:01 ryo Exp $");
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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 <uvm/uvm_extern.h>
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#include <arm/imx/imx6_reg.h>
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#include <arm/imx/imx6var.h>
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#include "bus_dma_generic.h"
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#include "locators.h"
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struct axi_softc {
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device_t sc_dev;
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bus_space_tag_t sc_iot;
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bus_dma_tag_t sc_dmat;
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};
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static int axi_match(device_t, struct cfdata *, void *);
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static void axi_attach(device_t, device_t, void *);
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static int axi_search(device_t, struct cfdata *, const int *, void *);
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static int axi_critical_search(device_t, struct cfdata *, const int *, void *);
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static int axi_search(device_t, struct cfdata *, const int *, void *);
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static int axi_print(void *, const char *);
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CFATTACH_DECL_NEW(axi, sizeof(struct axi_softc),
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axi_match, axi_attach, NULL, NULL);
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/* ARGSUSED */
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static int
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axi_match(device_t parent __unused, struct cfdata *match __unused,
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void *aux __unused)
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{
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return 1;
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}
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/* ARGSUSED */
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static void
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axi_attach(device_t parent __unused, device_t self, void *aux __unused)
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{
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struct axi_softc *sc;
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struct axi_attach_args aa;
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aprint_normal(": Advanced eXtensible Interface\n");
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aprint_naive("\n");
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sc = device_private(self);
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sc->sc_iot = &armv7_generic_bs_tag;
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#if NBUS_DMA_GENERIC > 0
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sc->sc_dmat = &imx_bus_dma_tag;
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#else
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sc->sc_dmat = 0;
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#endif
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aa.aa_name = "axi";
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aa.aa_iot = sc->sc_iot;
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aa.aa_dmat = sc->sc_dmat;
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config_search_ia(axi_critical_search, self, "axi", &aa);
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config_search_ia(axi_search, self, "axi", &aa);
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}
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/* ARGSUSED */
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static int
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axi_critical_search(device_t parent, struct cfdata *cf,
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const int *ldesc __unused, void *aux)
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{
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struct axi_attach_args *aa;
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aa = aux;
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if ((strcmp(cf->cf_name, "imxccm") != 0) &&
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(strcmp(cf->cf_name, "imxgpio") != 0) &&
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(strcmp(cf->cf_name, "imxiomux") != 0) &&
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(strcmp(cf->cf_name, "imxocotp") != 0) &&
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(strcmp(cf->cf_name, "imxuart") != 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[AXICF_ADDR];
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aa->aa_size = cf->cf_loc[AXICF_SIZE];
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aa->aa_irq = cf->cf_loc[AXICF_IRQ];
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aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE];
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if (config_match(parent, cf, aux) > 0)
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config_attach(parent, cf, aux, axi_print);
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return 0;
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}
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/* ARGSUSED */
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static int
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axi_search(device_t parent, struct cfdata *cf, const int *ldesc __unused,
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void *aux)
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{
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struct axi_attach_args *aa;
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aa = aux;
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aa->aa_addr = cf->cf_loc[AXICF_ADDR];
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aa->aa_size = cf->cf_loc[AXICF_SIZE];
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aa->aa_irq = cf->cf_loc[AXICF_IRQ];
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aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE];
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if (config_match(parent, cf, aux) > 0)
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config_attach(parent, cf, aux, axi_print);
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return 0;
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}
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/* ARGSUSED */
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static int
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axi_print(void *aux, const char *name __unused)
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{
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struct axi_attach_args *aa = (struct axi_attach_args *)aux;
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if (aa->aa_addr != AXICF_ADDR_DEFAULT) {
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aprint_normal(" addr 0x%lx", aa->aa_addr);
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if (aa->aa_size > AXICF_SIZE_DEFAULT)
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aprint_normal("-0x%lx",
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aa->aa_addr + aa->aa_size-1);
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}
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if (aa->aa_irq != AXICF_IRQ_DEFAULT)
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aprint_normal(" intr %d", aa->aa_irq);
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if (aa->aa_irqbase != AXICF_IRQBASE_DEFAULT)
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aprint_normal(" irqbase %d", aa->aa_irqbase);
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return (UNCONF);
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}
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