mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-05 09:14:03 +00:00
3da80d3a0e
functions and stop attaching of dcons(4) and dcons_crom(4) if they indicate failure. This fixes a panic seen on sparc64 machines with no free physical memory in the requested 32-bit region but still doesn't make dcons(4)/dcons_crom(4) these work. I think the latter can be fixed by simply specifying ~0UL as the upper limit for contigmalloc(9) and letting the bounce pages and the IOMMU respectively handle limitations of the DMA engine. I didn't want to change that without the consensus of simokawa@ though, who unfortunately didn't reply so far. MFC after: 1 week
296 lines
8.0 KiB
C
296 lines
8.0 KiB
C
/*-
|
|
* 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>
|
|
|
|
#ifdef __DragonFly__
|
|
#include <bus/firewire/firewire.h>
|
|
#include <bus/firewire/firewirereg.h>
|
|
#include <bus/firewire/iec13213.h>
|
|
#include "dcons.h"
|
|
#include "dcons_os.h"
|
|
#else
|
|
#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>
|
|
#endif
|
|
|
|
#include <sys/cons.h>
|
|
|
|
#define EXPOSE_IDT_ADDR 1
|
|
|
|
#if (defined(__i386__) || defined(__amd64__)) && defined(EXPOSE_IDT_ADDR)
|
|
#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;
|
|
|
|
#if __FreeBSD_version >= 500000
|
|
static int force_console = 0;
|
|
TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console);
|
|
#endif
|
|
|
|
#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;
|
|
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);
|
|
}
|
|
|
|
#ifndef NEED_NEW_DRIVER
|
|
#if (defined(__i386__) || defined(__amd64__)) && defined(EXPOSE_IDT_ADDR)
|
|
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__)) && defined(EXPOSE_IDT_ADDR)
|
|
dcons_crom_expose_idt(sc);
|
|
#endif
|
|
}
|
|
#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,
|
|
#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;
|
|
}
|
|
dcons_conf->dma_tag = sc->dma_tag;
|
|
dcons_conf->dma_map = sc->dma_map;
|
|
dcons_paddr = sc->bus_addr;
|
|
|
|
#if __FreeBSD_version >= 500000
|
|
/* Force to be the high-level console */
|
|
if (force_console)
|
|
cnselect(dcons_conf->cdev);
|
|
#endif
|
|
}
|
|
|
|
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)
|
|
{
|
|
#ifdef NEED_NEW_DRIVER
|
|
printf("dcons_crom: you need newer firewire driver\n");
|
|
return (-1);
|
|
#else
|
|
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,
|
|
#if __FreeBSD_version >= 501102
|
|
/*lockfunc*/busdma_lock_mutex,
|
|
/*lockarg*/&Giant,
|
|
#endif
|
|
&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);
|
|
#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;
|
|
|
|
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);
|