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99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/* $NetBSD: bcm2835_plcom.c,v 1.3 2015/07/29 14:22:49 skrll 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 Nick Hudson
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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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/* Interface to plcom (PL011) serial driver. */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bcm2835_plcom.c,v 1.3 2015/07/29 14:22:49 skrll Exp $");
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#include <sys/types.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/param.h>
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#include <sys/termios.h>
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#include <sys/bus.h>
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#include <arm/broadcom/bcm_amba.h>
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#include <arm/broadcom/bcm2835_intr.h>
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#include <arm/broadcom/bcm2835reg.h>
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#include <evbarm/dev/plcomreg.h>
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#include <evbarm/dev/plcomvar.h>
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static int bcm2835_plcom_match(device_t, cfdata_t, void *);
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static void bcm2835_plcom_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(bcmplcom, sizeof(struct plcom_softc),
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bcm2835_plcom_match, bcm2835_plcom_attach, NULL, NULL);
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static int
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bcm2835_plcom_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct amba_attach_args *aaa = aux;
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if (strcmp(aaa->aaa_name, "plcom") != 0)
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return 0;
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return 1;
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}
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static void
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bcm2835_plcom_attach(device_t parent, device_t self, void *aux)
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{
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struct plcom_softc *sc = device_private(self);
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struct amba_attach_args *aaa = aux;
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void *ih;
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sc->sc_dev = self;
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sc->sc_frequency = BCM2835_UART0_CLK;
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sc->sc_hwflags = PLCOM_HW_TXFIFO_DISABLE;
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sc->sc_swflags = 0;
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sc->sc_set_mcr = NULL;
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sc->sc_set_mcr_arg = NULL;
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sc->sc_pi.pi_type = PLCOM_TYPE_PL011;
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sc->sc_pi.pi_flags = PLC_FLAG_32BIT_ACCESS;
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sc->sc_pi.pi_iot = aaa->aaa_iot;
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sc->sc_pi.pi_iobase = aaa->aaa_addr;
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if (bus_space_map(aaa->aaa_iot, aaa->aaa_addr, PL011COM_UART_SIZE, 0,
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&sc->sc_pi.pi_ioh)) {
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aprint_error_dev(sc->sc_dev, "unable to map device\n");
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return;
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}
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plcom_attach_subr(sc);
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ih = intr_establish(aaa->aaa_intr, IPL_SERIAL, IST_LEVEL, plcomintr, sc);
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if (ih == NULL)
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panic("%s: cannot install interrupt handler",
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device_xname(sc->sc_dev));
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}
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