freebsd-dev/sys/dev/dcons/dcons_crom.c
Pedro F. Giffuni df57947f08 spdx: initial adoption of licensing ID tags.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes:	yes
Differential Revision:	https://reviews.freebsd.org/D13133
2017-11-18 14:26:50 +00:00

269 lines
7.4 KiB
C

/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* 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/module.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>
#include <dev/dcons/dcons_os.h>
#include <sys/cons.h>
#if (defined(__i386__) || defined(__amd64__))
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/segments.h> /* for idt */
#endif
static bus_addr_t dcons_paddr;
static int force_console = 0;
TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console);
#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;
eventhandler_tag ehand;
};
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);
}
#if (defined(__i386__) || defined(__amd64__))
static void
dcons_crom_expose_idt(struct dcons_crom_softc *sc)
{
static off_t idt_paddr;
/* XXX */
idt_paddr = (char *)idt - (char *)KERNBASE;
crom_add_entry(&sc->unit, DCONS_CSR_KEY_RESET_HI, ADDR_HI(idt_paddr));
crom_add_entry(&sc->unit, DCONS_CSR_KEY_RESET_LO, ADDR_LO(idt_paddr));
}
#endif
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));
#if (defined(__i386__) || defined(__amd64__))
dcons_crom_expose_idt(sc);
#endif
}
static void
dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
{
struct dcons_crom_softc *sc;
if (error)
printf("dcons_dmamap_cb: error=%d\n", error);
sc = (struct dcons_crom_softc *)arg;
sc->bus_addr = segments[0].ds_addr;
bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
device_printf(sc->fd.dev,
"bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr);
if (dcons_paddr != 0) {
/* XXX */
device_printf(sc->fd.dev, "dcons_paddr is already set\n");
return;
}
dcons_conf->dma_tag = sc->dma_tag;
dcons_conf->dma_map = sc->dma_map;
dcons_paddr = sc->bus_addr;
/* Force to be the high-level console */
if (force_console)
cnselect(dcons_conf->cdev);
}
static void
dcons_crom_poll(void *p, int arg)
{
struct dcons_crom_softc *sc = (struct dcons_crom_softc *) p;
sc->fd.fc->poll(sc->fd.fc, -1, -1);
}
static int
dcons_crom_attach(device_t dev)
{
struct dcons_crom_softc *sc;
int error;
if (dcons_conf->buf == NULL)
return (ENXIO);
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 */
error = 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_conf->size,
/*nsegments*/ 1,
/*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
/*flags*/ BUS_DMA_ALLOCNOW,
/*lockfunc*/busdma_lock_mutex,
/*lockarg*/&Giant,
&sc->dma_tag);
if (error != 0)
return (error);
error = bus_dmamap_create(sc->dma_tag, BUS_DMA_COHERENT, &sc->dma_map);
if (error != 0)
return (error);
error = bus_dmamap_load(sc->dma_tag, sc->dma_map,
(void *)dcons_conf->buf, dcons_conf->size,
dmamap_cb, sc, 0);
if (error != 0)
return (error);
sc->ehand = EVENTHANDLER_REGISTER(dcons_poll, dcons_crom_poll,
(void *)sc, 0);
return (0);
}
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;
if (sc->ehand)
EVENTHANDLER_DEREGISTER(dcons_poll, sc->ehand);
/* XXX */
if (dcons_conf->dma_tag == sc->dma_tag)
dcons_conf->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);