239 lines
6.9 KiB
C
239 lines
6.9 KiB
C
/* $NetBSD: atppc_puc.c,v 1.3 2005/02/27 00:27:32 perry Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2004 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jaromir Dolecek.
|
|
*
|
|
* 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 by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 THE FOUNDATION OR CONTRIBUTORS
|
|
* 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 "opt_atppc.h"
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: atppc_puc.c,v 1.3 2005/02/27 00:27:32 perry Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/device.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/termios.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pucvar.h>
|
|
|
|
#include <dev/ic/atppcvar.h>
|
|
|
|
static int atppc_puc_match(struct device *, struct cfdata *, void *);
|
|
static void atppc_puc_attach(struct device *, struct device *, void *);
|
|
|
|
struct atppc_puc_softc {
|
|
/* Machine independent device data */
|
|
struct atppc_softc sc_atppc;
|
|
|
|
bus_dmamap_t sc_dmamap;
|
|
};
|
|
|
|
CFATTACH_DECL(atppc_puc, sizeof(struct atppc_puc_softc), atppc_puc_match,
|
|
atppc_puc_attach, NULL, NULL);
|
|
|
|
static int atppc_puc_dma_setup(struct atppc_puc_softc *);
|
|
static int atppc_puc_dma_start(struct atppc_softc *, void *, u_int,
|
|
u_int8_t);
|
|
static int atppc_puc_dma_finish(struct atppc_softc *);
|
|
static int atppc_puc_dma_abort(struct atppc_softc *);
|
|
static int atppc_puc_dma_malloc(struct device *, caddr_t *, bus_addr_t *,
|
|
bus_size_t);
|
|
static void atppc_puc_dma_free(struct device *, caddr_t *, bus_addr_t *,
|
|
bus_size_t);
|
|
|
|
/*
|
|
* atppc_acpi_match: autoconf(9) match routine
|
|
*/
|
|
static int
|
|
atppc_puc_match(struct device *parent, struct cfdata *match, void *aux)
|
|
{
|
|
struct puc_attach_args *aa = aux;
|
|
|
|
/*
|
|
* Locators already matched, just check the type.
|
|
*/
|
|
if (aa->type != PUC_PORT_TYPE_LPT)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
atppc_puc_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct atppc_softc *sc = (struct atppc_softc *) self;
|
|
struct atppc_puc_softc *psc = (struct atppc_puc_softc *) self;
|
|
struct puc_attach_args *aa = aux;
|
|
const char *intrstr;
|
|
|
|
sc->sc_dev_ok = ATPPC_NOATTACH;
|
|
|
|
printf(": AT Parallel Port\n");
|
|
|
|
/* Attach */
|
|
sc->sc_iot = aa->t;
|
|
sc->sc_ioh = aa->h;
|
|
sc->sc_dmat = aa->dmat;
|
|
sc->sc_has = 0;
|
|
|
|
intrstr = pci_intr_string(aa->pc, aa->intrhandle);
|
|
sc->sc_ieh = pci_intr_establish(aa->pc, aa->intrhandle, IPL_TTY,
|
|
atppcintr, sc);
|
|
if (sc->sc_ieh == NULL) {
|
|
printf("%s: couldn't establish interrupt",
|
|
sc->sc_dev.dv_xname);
|
|
if (intrstr != NULL)
|
|
printf(" at %s", intrstr);
|
|
printf("\n");
|
|
return;
|
|
}
|
|
printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
|
|
sc->sc_has |= ATPPC_HAS_INTR;
|
|
|
|
/* setup DMA hooks */
|
|
if (atppc_puc_dma_setup(psc) == 0) {
|
|
sc->sc_has |= ATPPC_HAS_DMA;
|
|
sc->sc_dma_start = atppc_puc_dma_start;
|
|
sc->sc_dma_finish = atppc_puc_dma_finish;
|
|
sc->sc_dma_abort = atppc_puc_dma_abort;
|
|
sc->sc_dma_malloc = atppc_puc_dma_malloc;
|
|
sc->sc_dma_free = atppc_puc_dma_free;
|
|
}
|
|
|
|
/* Finished attach */
|
|
sc->sc_dev_ok = ATPPC_ATTACHED;
|
|
|
|
/* Run soft configuration attach */
|
|
atppc_sc_attach(sc);
|
|
}
|
|
|
|
/* Setup DMA structures */
|
|
static int
|
|
atppc_puc_dma_setup(struct atppc_puc_softc *psc)
|
|
{
|
|
return EOPNOTSUPP; /* XXX DMA not tested yet */
|
|
#if 0
|
|
struct atppc_softc *sc = (struct atppc_softc *)psc;
|
|
int error;
|
|
|
|
#define BUFSIZE PAGE_SIZE /* XXX see lptvar.h */
|
|
if ((error = bus_dmamap_create(sc->sc_dmat, BUFSIZE, 1, BUFSIZE, 0,
|
|
BUS_DMA_NOWAIT, &psc->sc_dmamap)))
|
|
return error;
|
|
|
|
return (0);
|
|
#endif
|
|
}
|
|
|
|
/* Start DMA operation over PCI bus */
|
|
static int
|
|
atppc_puc_dma_start(struct atppc_softc *dev, void *buf, u_int nbytes,
|
|
u_int8_t mode)
|
|
{
|
|
struct atppc_puc_softc *psc = (struct atppc_puc_softc *) dev;
|
|
struct atppc_softc *sc = &psc->sc_atppc;
|
|
|
|
bus_dmamap_sync(sc->sc_dmat, psc->sc_dmamap, 0, nbytes,
|
|
(mode == ATPPC_DMA_MODE_WRITE) ? BUS_DMASYNC_PREWRITE
|
|
: BUS_DMASYNC_PREREAD);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Stop DMA operation over PCI bus */
|
|
static int
|
|
atppc_puc_dma_finish(struct atppc_softc *dev)
|
|
{
|
|
|
|
struct atppc_puc_softc *psc = (struct atppc_puc_softc *) dev;
|
|
struct atppc_softc *sc = &psc->sc_atppc;
|
|
|
|
/*
|
|
* We don't know direction of DMA, so sync both. We can safely
|
|
* assume the dma map is loaded.
|
|
*/
|
|
bus_dmamap_sync(sc->sc_dmat, psc->sc_dmamap, 0,
|
|
psc->sc_dmamap->dm_segs[0].ds_len,
|
|
BUS_DMASYNC_POSTWRITE|BUS_DMASYNC_POSTREAD);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Abort DMA operation over PCI bus */
|
|
int
|
|
atppc_puc_dma_abort(struct atppc_softc * lsc)
|
|
{
|
|
|
|
/* Nothing to do - we do not need to sync, op is aborted */
|
|
return (0);
|
|
}
|
|
|
|
/* Allocate memory for DMA over PCI bus */
|
|
int
|
|
atppc_puc_dma_malloc(struct device *dev, caddr_t *buf, bus_addr_t *bus_addr,
|
|
bus_size_t size)
|
|
{
|
|
struct atppc_puc_softc *psc = (struct atppc_puc_softc *) dev;
|
|
struct atppc_softc *sc = &psc->sc_atppc;
|
|
int error;
|
|
|
|
error = bus_dmamap_load(sc->sc_dmat, psc->sc_dmamap, *buf, size,
|
|
NULL /* kernel address */, BUS_DMA_WAITOK|BUS_DMA_STREAMING);
|
|
if (error)
|
|
return (error);
|
|
|
|
*bus_addr = psc->sc_dmamap->dm_segs[0].ds_addr;
|
|
return (0);
|
|
}
|
|
|
|
/* Free memory allocated by atppc_isa_dma_malloc() */
|
|
void
|
|
atppc_puc_dma_free(struct device *dev, caddr_t *buf, bus_addr_t *bus_addr,
|
|
bus_size_t size)
|
|
{
|
|
struct atppc_puc_softc *psc = (struct atppc_puc_softc *) dev;
|
|
struct atppc_softc *sc = &psc->sc_atppc;
|
|
|
|
return (bus_dmamap_unload(sc->sc_dmat, psc->sc_dmamap));
|
|
}
|