19b3bba3e5
- Force dcons to be the high-level console after dcons_crom has been attached. - Add a tunable to be the high-level console.
239 lines
6.6 KiB
C
239 lines
6.6 KiB
C
/*
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* Copyright (C) 2003
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* Hidetoshi Shimokawa. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: dcons_crom.c,v 1.8 2003/10/23 15:47:21 simokawa Exp $
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/firewirereg.h>
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#include <dev/firewire/iec13213.h>
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#include <dev/dcons/dcons.h>
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#include <sys/cons.h>
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static bus_addr_t dcons_paddr;
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#if __FreeBSD_version >= 500000
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static int force_console = 1;
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TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console);
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#endif
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#ifndef CSRVAL_VENDOR_PRIVATE
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#define NEED_NEW_DRIVER
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#endif
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#define ADDR_HI(x) (((x) >> 24) & 0xffffff)
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#define ADDR_LO(x) ((x) & 0xffffff)
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struct dcons_crom_softc {
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struct firewire_dev_comm fd;
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struct crom_chunk unit;
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struct crom_chunk spec;
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struct crom_chunk ver;
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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bus_addr_t bus_addr;
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};
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static void
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dcons_crom_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent));
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}
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static int
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dcons_crom_probe(device_t dev)
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{
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device_t pa;
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pa = device_get_parent(dev);
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if(device_get_unit(dev) != device_get_unit(pa)){
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return(ENXIO);
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}
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device_set_desc(dev, "dcons configuration ROM");
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return (0);
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}
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#ifndef NEED_NEW_DRIVER
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static void
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dcons_crom_post_busreset(void *arg)
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{
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struct dcons_crom_softc *sc;
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struct crom_src *src;
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struct crom_chunk *root;
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sc = (struct dcons_crom_softc *) arg;
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src = sc->fd.fc->crom_src;
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root = sc->fd.fc->crom_root;
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bzero(&sc->unit, sizeof(struct crom_chunk));
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crom_add_chunk(src, root, &sc->unit, CROM_UDIR);
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crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE);
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crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD");
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crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER);
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crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons");
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crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr));
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crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr));
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}
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#endif
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static void
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dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
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{
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struct dcons_crom_softc *sc;
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if (error)
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printf("dcons_dmamap_cb: error=%d\n", error);
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sc = (struct dcons_crom_softc *)arg;
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sc->bus_addr = segments[0].ds_addr;
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bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
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device_printf(sc->fd.dev,
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#if __FreeBSD_version < 500000
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"bus_addr 0x%x\n", sc->bus_addr);
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#else
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"bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr);
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#endif
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if (dcons_paddr != 0) {
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/* XXX */
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device_printf(sc->fd.dev, "dcons_paddr is already set\n");
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return;
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}
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dcons_conf->dma_tag = sc->dma_tag;
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dcons_conf->dma_map = sc->dma_map;
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dcons_paddr = sc->bus_addr;
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#if __FreeBSD_version >= 500000
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/* Force to be the high-level console */
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if (force_console)
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cnselect(dcons_conf->cdev);
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#endif
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}
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static int
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dcons_crom_attach(device_t dev)
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{
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#ifdef NEED_NEW_DRIVER
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printf("dcons_crom: you need newer firewire driver\n");
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return (-1);
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#else
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struct dcons_crom_softc *sc;
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sc = (struct dcons_crom_softc *) device_get_softc(dev);
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sc->fd.fc = device_get_ivars(dev);
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sc->fd.dev = dev;
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sc->fd.post_explore = NULL;
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sc->fd.post_busreset = (void *) dcons_crom_post_busreset;
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/* map dcons buffer */
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bus_dma_tag_create(
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/*parent*/ sc->fd.fc->dmat,
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/*alignment*/ sizeof(u_int32_t),
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/*boundary*/ 0,
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/*lowaddr*/ BUS_SPACE_MAXADDR,
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/*highaddr*/ BUS_SPACE_MAXADDR,
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/*filter*/NULL, /*filterarg*/NULL,
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/*maxsize*/ dcons_conf->size,
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/*nsegments*/ 1,
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/*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
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/*flags*/ BUS_DMA_ALLOCNOW,
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#if __FreeBSD_version >= 501102
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/*lockfunc*/busdma_lock_mutex,
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/*lockarg*/&Giant,
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#endif
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&sc->dma_tag);
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bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map);
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bus_dmamap_load(sc->dma_tag, sc->dma_map,
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(void *)dcons_conf->buf, dcons_conf->size,
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dmamap_cb, sc, 0);
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return (0);
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#endif
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}
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static int
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dcons_crom_detach(device_t dev)
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{
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struct dcons_crom_softc *sc;
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sc = (struct dcons_crom_softc *) device_get_softc(dev);
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sc->fd.post_busreset = NULL;
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/* XXX */
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if (dcons_conf->dma_tag == sc->dma_tag)
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dcons_conf->dma_tag = NULL;
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bus_dmamap_unload(sc->dma_tag, sc->dma_map);
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bus_dmamap_destroy(sc->dma_tag, sc->dma_map);
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bus_dma_tag_destroy(sc->dma_tag);
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return 0;
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}
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static devclass_t dcons_crom_devclass;
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static device_method_t dcons_crom_methods[] = {
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/* device interface */
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DEVMETHOD(device_identify, dcons_crom_identify),
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DEVMETHOD(device_probe, dcons_crom_probe),
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DEVMETHOD(device_attach, dcons_crom_attach),
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DEVMETHOD(device_detach, dcons_crom_detach),
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{ 0, 0 }
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};
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static driver_t dcons_crom_driver = {
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"dcons_crom",
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dcons_crom_methods,
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sizeof(struct dcons_crom_softc),
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};
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DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver,
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dcons_crom_devclass, 0, 0);
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MODULE_VERSION(dcons_crom, 1);
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MODULE_DEPEND(dcons_crom, dcons,
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DCONS_VERSION, DCONS_VERSION, DCONS_VERSION);
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MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1);
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