2259d74c68
It was not working because we were saving its state after the device was powered down. Simplify vesa_load_state() as the culprit is fixed now.
292 lines
7.2 KiB
C
292 lines
7.2 KiB
C
/*-
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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* 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 as
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* the first lines of this file unmodified.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_vga.h"
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#include "opt_fb.h"
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#include "opt_syscons.h" /* should be removed in the future, XXX */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/bus.h>
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#include <sys/fbio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/md_var.h>
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#ifdef __i386__
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#include <machine/pc/bios.h>
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#endif
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#include <dev/fb/fbreg.h>
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#include <dev/fb/vgareg.h>
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#include <isa/isareg.h>
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#include <isa/isavar.h>
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#define VGA_SOFTC(unit) \
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((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
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static devclass_t isavga_devclass;
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#ifdef FB_INSTALL_CDEV
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static d_open_t isavga_open;
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static d_close_t isavga_close;
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static d_read_t isavga_read;
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static d_write_t isavga_write;
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static d_ioctl_t isavga_ioctl;
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static d_mmap_t isavga_mmap;
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static struct cdevsw isavga_cdevsw = {
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.d_version = D_VERSION,
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.d_flags = D_NEEDGIANT,
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.d_open = isavga_open,
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.d_close = isavga_close,
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.d_read = isavga_read,
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.d_write = isavga_write,
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.d_ioctl = isavga_ioctl,
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.d_mmap = isavga_mmap,
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.d_name = VGA_DRIVER_NAME,
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};
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#endif /* FB_INSTALL_CDEV */
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static void
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isavga_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
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}
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static int
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isavga_probe(device_t dev)
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{
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video_adapter_t adp;
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int error;
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/* No pnp support */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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device_set_desc(dev, "Generic ISA VGA");
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error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
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if (error == 0) {
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bus_set_resource(dev, SYS_RES_IOPORT, 0,
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adp.va_io_base, adp.va_io_size);
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bus_set_resource(dev, SYS_RES_MEMORY, 0,
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adp.va_mem_base, adp.va_mem_size);
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#if 0
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isa_set_port(dev, adp.va_io_base);
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isa_set_portsize(dev, adp.va_io_size);
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isa_set_maddr(dev, adp.va_mem_base);
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isa_set_msize(dev, adp.va_mem_size);
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#endif
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}
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return error;
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}
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static int
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isavga_attach(device_t dev)
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{
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vga_softc_t *sc;
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int unit;
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int rid;
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int error;
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unit = device_get_unit(dev);
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sc = device_get_softc(dev);
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rid = 0;
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bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
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rid = 0;
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bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
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0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
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error = vga_attach_unit(unit, sc, device_get_flags(dev));
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if (error)
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return error;
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#ifdef FB_INSTALL_CDEV
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/* attach a virtual frame buffer device */
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error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw);
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if (error)
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return error;
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#endif /* FB_INSTALL_CDEV */
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if (0 && bootverbose)
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vidd_diag(sc->adp, bootverbose);
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#if 0 /* experimental */
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device_add_child(dev, "fb", -1);
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bus_generic_attach(dev);
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#endif
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return 0;
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}
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static int
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isavga_suspend(device_t dev)
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{
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vga_softc_t *sc;
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int err, nbytes;
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err = bus_generic_suspend(dev);
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if (err)
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return (err);
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sc = device_get_softc(dev);
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/* Save the video state across the suspend. */
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if (sc->state_buf != NULL)
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goto save_palette;
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nbytes = vidd_save_state(sc->adp, NULL, 0);
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if (nbytes <= 0)
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goto save_palette;
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sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT);
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if (sc->state_buf == NULL)
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goto save_palette;
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if (bootverbose)
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device_printf(dev, "saving %d bytes of video state\n", nbytes);
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if (vidd_save_state(sc->adp, sc->state_buf, nbytes) != 0) {
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device_printf(dev, "failed to save state (nbytes=%d)\n",
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nbytes);
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free(sc->state_buf, M_TEMP);
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sc->state_buf = NULL;
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}
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save_palette:
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/* Save the color palette across the suspend. */
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if (sc->pal_buf != NULL)
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return (0);
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sc->pal_buf = malloc(256 * 3, M_TEMP, M_NOWAIT);
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if (sc->pal_buf != NULL) {
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if (bootverbose)
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device_printf(dev, "saving color palette\n");
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if (vidd_save_palette(sc->adp, sc->pal_buf) != 0) {
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device_printf(dev, "failed to save palette\n");
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free(sc->pal_buf, M_TEMP);
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sc->pal_buf = NULL;
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}
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}
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return (0);
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}
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static int
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isavga_resume(device_t dev)
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{
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vga_softc_t *sc;
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sc = device_get_softc(dev);
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if (sc->state_buf != NULL) {
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if (vidd_load_state(sc->adp, sc->state_buf) != 0)
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device_printf(dev, "failed to reload state\n");
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free(sc->state_buf, M_TEMP);
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sc->state_buf = NULL;
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}
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if (sc->pal_buf != NULL) {
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if (vidd_load_palette(sc->adp, sc->pal_buf) != 0)
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device_printf(dev, "failed to reload palette\n");
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free(sc->pal_buf, M_TEMP);
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sc->pal_buf = NULL;
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}
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return (bus_generic_resume(dev));
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}
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#ifdef FB_INSTALL_CDEV
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static int
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isavga_open(struct cdev *dev, int flag, int mode, struct thread *td)
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{
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return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
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}
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static int
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isavga_close(struct cdev *dev, int flag, int mode, struct thread *td)
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{
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return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
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}
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static int
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isavga_read(struct cdev *dev, struct uio *uio, int flag)
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{
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return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
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}
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static int
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isavga_write(struct cdev *dev, struct uio *uio, int flag)
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{
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return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
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}
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static int
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isavga_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
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{
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return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
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}
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static int
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isavga_mmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot)
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{
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return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot);
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}
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#endif /* FB_INSTALL_CDEV */
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static device_method_t isavga_methods[] = {
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DEVMETHOD(device_identify, isavga_identify),
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DEVMETHOD(device_probe, isavga_probe),
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DEVMETHOD(device_attach, isavga_attach),
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DEVMETHOD(device_suspend, isavga_suspend),
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DEVMETHOD(device_resume, isavga_resume),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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{ 0, 0 }
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};
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static driver_t isavga_driver = {
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VGA_DRIVER_NAME,
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isavga_methods,
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sizeof(vga_softc_t),
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};
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DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
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