144 lines
4.2 KiB
C
144 lines
4.2 KiB
C
/* $NetBSD: pxa2x0_com.c,v 1.7 2006/12/10 12:46:48 kiyohara Exp $ */
|
|
|
|
/*
|
|
* Copyright 2003 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Steve C. Woodford for Wasabi Systems, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pxa2x0_com.c,v 1.7 2006/12/10 12:46:48 kiyohara Exp $");
|
|
|
|
#include "opt_com.h"
|
|
|
|
#ifndef COM_PXA2X0
|
|
#error "You must use options COM_PXA2X0 to get PXA2x0 serial port support"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/termios.h>
|
|
|
|
#include <machine/intr.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
|
|
#include <arm/xscale/pxa2x0reg.h>
|
|
#include <arm/xscale/pxa2x0var.h>
|
|
|
|
#include "locators.h"
|
|
|
|
static int pxauart_match(struct device *, struct cfdata *, void *);
|
|
static void pxauart_attach(struct device *, struct device *, void *);
|
|
|
|
CFATTACH_DECL(pxauart, sizeof(struct com_softc),
|
|
pxauart_match, pxauart_attach, NULL, NULL);
|
|
|
|
static int
|
|
pxauart_match(struct device *parent, struct cfdata *cf, void *aux)
|
|
{
|
|
struct pxaip_attach_args *pxa = aux;
|
|
bus_space_tag_t bt = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
|
|
bus_space_handle_t bh;
|
|
int rv;
|
|
|
|
switch (pxa->pxa_addr) {
|
|
case PXA2X0_FFUART_BASE:
|
|
if (pxa->pxa_intr != PXA2X0_INT_FFUART)
|
|
return (0);
|
|
break;
|
|
|
|
case PXA2X0_STUART_BASE:
|
|
if (pxa->pxa_intr != PXA2X0_INT_STUART)
|
|
return (0);
|
|
break;
|
|
|
|
case PXA2X0_BTUART_BASE: /* XXX: Config file option ... */
|
|
if (pxa->pxa_intr != PXA2X0_INT_BTUART)
|
|
return (0);
|
|
break;
|
|
|
|
case PXA2X0_HWUART_BASE:
|
|
if (pxa->pxa_intr != PXA2X0_INT_HWUART)
|
|
return (0);
|
|
break;
|
|
|
|
default:
|
|
return (0);
|
|
}
|
|
|
|
pxa->pxa_size = 0x20;
|
|
|
|
if (com_is_console(bt, pxa->pxa_addr, NULL))
|
|
return (1);
|
|
|
|
if (bus_space_map(bt, pxa->pxa_addr, pxa->pxa_size, 0, &bh))
|
|
return (0);
|
|
|
|
/* Make sure the UART is enabled */
|
|
bus_space_write_1(bt, bh, com_ier, IER_EUART);
|
|
|
|
rv = comprobe1(bt, bh);
|
|
bus_space_unmap(bt, bh, pxa->pxa_size);
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static void
|
|
pxauart_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct com_softc *sc = (struct com_softc *)self;
|
|
struct pxaip_attach_args *pxa = aux;
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
bus_addr_t iobase;
|
|
|
|
iot = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
|
|
iobase = pxa->pxa_addr;
|
|
sc->sc_frequency = PXA2X0_COM_FREQ;
|
|
sc->sc_type = COM_TYPE_PXA2x0;
|
|
|
|
if (com_is_console(iot, iobase, &ioh) == 0 &&
|
|
bus_space_map(iot, iobase, pxa->pxa_size, 0, &ioh)) {
|
|
printf(": can't map registers\n");
|
|
return;
|
|
}
|
|
COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
|
|
|
|
com_attach_subr(sc);
|
|
|
|
pxa2x0_intr_establish(pxa->pxa_intr, IPL_SERIAL, comintr, sc);
|
|
}
|