diff options
author | simokawa <simokawa@FreeBSD.org> | 2003-10-24 15:44:10 +0000 |
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committer | simokawa <simokawa@FreeBSD.org> | 2003-10-24 15:44:10 +0000 |
commit | c96f6e4f1d827076592526a3f1f3e7887a9732a4 (patch) | |
tree | 2bed02c82f165be07e877314c53ec276a84990ec /sys/dev/dcons/dcons_crom.c | |
parent | 7248844c9b0757577411885916b1314dfedc3cae (diff) | |
download | FreeBSD-src-c96f6e4f1d827076592526a3f1f3e7887a9732a4.zip FreeBSD-src-c96f6e4f1d827076592526a3f1f3e7887a9732a4.tar.gz |
Add dumb console driver and related bits.
dcons(4): very simple console and gdb port driver
dcons_crom(4): FireWire attachment
dconschat(8): User interface to dcons
Tested with: i386, i386-PAE, and sparc64.
Diffstat (limited to 'sys/dev/dcons/dcons_crom.c')
-rw-r--r-- | sys/dev/dcons/dcons_crom.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/sys/dev/dcons/dcons_crom.c b/sys/dev/dcons/dcons_crom.c new file mode 100644 index 0000000..d7cd502 --- /dev/null +++ b/sys/dev/dcons/dcons_crom.c @@ -0,0 +1,224 @@ +/* + * Copyright (C) 2003 + * Hidetoshi Shimokawa. All rights reserved. + * + * 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 Hidetoshi Shimokawa. + * + * 4. Neither the name of the author 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 REGENTS 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 REGENTS 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. + * + * $Id: dcons_crom.c,v 1.8 2003/10/23 15:47:21 simokawa Exp $ + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/types.h> +#include <sys/conf.h> +#include <sys/malloc.h> + +#include <sys/bus.h> +#include <machine/bus.h> + +#include <dev/firewire/firewire.h> +#include <dev/firewire/firewirereg.h> +#include <dev/firewire/iec13213.h> +#include <dev/dcons/dcons.h> + +static bus_addr_t dcons_paddr; + +#ifndef CSRVAL_VENDOR_PRIVATE +#define NEED_NEW_DRIVER +#endif + +#define ADDR_HI(x) (((x) >> 24) & 0xffffff) +#define ADDR_LO(x) ((x) & 0xffffff) + +struct dcons_crom_softc { + struct firewire_dev_comm fd; + struct crom_chunk unit; + struct crom_chunk spec; + struct crom_chunk ver; + bus_dma_tag_t dma_tag; + bus_dmamap_t dma_map; + bus_addr_t bus_addr; +}; + +static void +dcons_crom_identify(driver_t *driver, device_t parent) +{ + BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent)); +} + +static int +dcons_crom_probe(device_t dev) +{ + device_t pa; + + pa = device_get_parent(dev); + if(device_get_unit(dev) != device_get_unit(pa)){ + return(ENXIO); + } + + device_set_desc(dev, "dcons configuration ROM"); + return (0); +} + +#ifndef NEED_NEW_DRIVER +static void +dcons_crom_post_busreset(void *arg) +{ + struct dcons_crom_softc *sc; + struct crom_src *src; + struct crom_chunk *root; + + sc = (struct dcons_crom_softc *) arg; + src = sc->fd.fc->crom_src; + root = sc->fd.fc->crom_root; + + bzero(&sc->unit, sizeof(struct crom_chunk)); + + crom_add_chunk(src, root, &sc->unit, CROM_UDIR); + crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE); + crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD"); + crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER); + crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons"); + crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr)); + crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr)); +} +#endif + +static void +dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error) +{ + bus_addr_t *ptr; + + if (error) + printf("dcons_dmamap_cb: error=%d\n", error); + + ptr = (bus_addr_t *) arg; + *ptr = segments[0].ds_addr; +} + +static int +dcons_crom_attach(device_t dev) +{ +#ifdef NEED_NEW_DRIVER + printf("dcons_crom: you need newer firewire driver\n"); + return (-1); +#else + struct dcons_crom_softc *sc; + + sc = (struct dcons_crom_softc *) device_get_softc(dev); + sc->fd.fc = device_get_ivars(dev); + sc->fd.dev = dev; + sc->fd.post_explore = NULL; + sc->fd.post_busreset = (void *) dcons_crom_post_busreset; + + /* map dcons buffer */ + bus_dma_tag_create( + /*parent*/ sc->fd.fc->dmat, + /*alignment*/ sizeof(u_int32_t), + /*boundary*/ 0, + /*lowaddr*/ BUS_SPACE_MAXADDR, + /*highaddr*/ BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + /*maxsize*/ dcons_bufsize, + /*nsegments*/ 1, + /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, + /*flags*/ BUS_DMA_ALLOCNOW, +#if __FreeBSD_version >= 501102 + /*lockfunc*/busdma_lock_mutex, + /*lockarg*/&Giant, +#endif + &sc->dma_tag); + bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map); + bus_dmamap_load(sc->dma_tag, sc->dma_map, + (void *)dcons_buf, dcons_bufsize, + dmamap_cb, &sc->bus_addr, 0); + bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE); + device_printf(sc->fd.dev, +#if __FreeBSD_version < 500000 + "bus_addr 0x%x\n", sc->bus_addr); +#else + "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr); +#endif + if (dcons_paddr != 0) { + /* XXX */ + device_printf(sc->fd.dev, "dcons_paddr is already set\n"); + return (0); + } + dcons_dma_tag = sc->dma_tag; + dcons_dma_map = sc->dma_map; + dcons_paddr = sc->bus_addr; + return (0); +#endif +} + +static int +dcons_crom_detach(device_t dev) +{ + struct dcons_crom_softc *sc; + + sc = (struct dcons_crom_softc *) device_get_softc(dev); + sc->fd.post_busreset = NULL; + + /* XXX */ + if (dcons_dma_tag == sc->dma_tag) + dcons_dma_tag = NULL; + + bus_dmamap_unload(sc->dma_tag, sc->dma_map); + bus_dmamap_destroy(sc->dma_tag, sc->dma_map); + bus_dma_tag_destroy(sc->dma_tag); + + return 0; +} + +static devclass_t dcons_crom_devclass; + +static device_method_t dcons_crom_methods[] = { + /* device interface */ + DEVMETHOD(device_identify, dcons_crom_identify), + DEVMETHOD(device_probe, dcons_crom_probe), + DEVMETHOD(device_attach, dcons_crom_attach), + DEVMETHOD(device_detach, dcons_crom_detach), + { 0, 0 } +}; + +static driver_t dcons_crom_driver = { + "dcons_crom", + dcons_crom_methods, + sizeof(struct dcons_crom_softc), +}; + +DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, + dcons_crom_devclass, 0, 0); +MODULE_VERSION(dcons_crom, 1); +MODULE_DEPEND(dcons_crom, dcons, + DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); +MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); |