528433ba71
is particularly useful when VESA is available (either `options VESA' or load the vesa module), as BIOSes in some notebooks may correctly save and restore LCD panel settings using VESA in cases where calling the video BIOS POST is not effective. On some systems it may also be necessary to set the hw.acpi.reset_video sysctl to 0.
273 lines
6.7 KiB
C
273 lines
6.7 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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(*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
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#if 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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sc = device_get_softc(dev);
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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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/* Save the video state across the suspend. */
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if (sc->state_buf != NULL) {
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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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nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
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if (nbytes <= 0)
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return (0);
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sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
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if (sc->state_buf == NULL)
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return (0);
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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 ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf,
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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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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 ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
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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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bus_generic_resume(dev);
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return 0;
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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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