130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/* $NetBSD: gemini_com.c,v 1.3 2011/07/01 19:32:28 dyoung Exp $ */
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/* adapted from:
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* NetBSD: omap_com.c,v 1.2 2008/03/14 15:09:09 cube Exp
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*/
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/*
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* Based on arch/arm/xscale/pxa2x0_com.c
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*
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* Copyright 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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: gemini_com.c,v 1.3 2011/07/01 19:32:28 dyoung Exp $");
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#include "opt_com.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <machine/intr.h>
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#include <sys/bus.h>
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#include <arm/pic/picvar.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <arm/gemini/gemini_reg.h>
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#include <arm/gemini/gemini_obiovar.h>
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#include <arm/gemini/gemini_com.h>
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#include "locators.h"
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static int gemini_com_match(device_t, cfdata_t , void *);
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static void gemini_com_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(gemini_com, sizeof(struct com_softc),
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gemini_com_match, gemini_com_attach, NULL, NULL);
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static int
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gemini_com_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct obio_attach_args *obio = aux;
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bus_space_handle_t bh;
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int rv;
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if (obio->obio_addr == -1 || obio->obio_intr == -1)
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panic("gemini_com must have addr and intr specified in config.");
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if (obio->obio_size == 0)
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obio->obio_size = GEMINI_UART_SIZE;
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if (com_is_console(obio->obio_iot, obio->obio_addr, NULL))
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return (1);
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if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size,
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0, &bh))
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return (0);
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rv = comprobe1(obio->obio_iot, bh);
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bus_space_unmap(obio->obio_iot, bh, obio->obio_size);
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return (rv);
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}
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static void
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gemini_com_attach(device_t parent, device_t self, void *aux)
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{
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struct com_softc *sc = device_private(self);
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struct obio_attach_args *obio = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_addr_t iobase;
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sc->sc_dev = self;
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iot = obio->obio_iot;
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iobase = obio->obio_addr;
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sc->sc_frequency = GEMINI_COM_FREQ;
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sc->sc_type = COM_TYPE_16550_NOERS;
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if (com_is_console(iot, iobase, &ioh) == 0 &&
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bus_space_map(iot, iobase, obio->obio_size, 0, &ioh)) {
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panic(": can't map registers\n");
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return;
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}
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COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
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com_attach_subr(sc);
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aprint_naive("\n");
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intr_establish(obio->obio_intr, IPL_SERIAL, IST_LEVEL_HIGH,
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comintr, sc);
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}
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