b66e2b8e50
itself to an associated PCI device if it exists. It is little bit hackish but it should fix build without frame buffer driver since r198964. Fix some style(9) nits in vga_isa.c while we are here.
326 lines
8.0 KiB
C
326 lines
8.0 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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devclass_t dc;
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device_t *devs;
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void *vgapci_sc;
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int count, i;
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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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/* Find the matching PCI video controller. */
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if (unit == 0) {
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dc = devclass_find("vgapci");
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if (dc != NULL &&
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devclass_get_devices(dc, &devs, &count) == 0) {
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for (i = 0; i < count; i++)
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if (device_get_flags(devs[i]) != 0) {
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sc->pci_dev = devs[i];
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break;
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}
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free(devs, M_TEMP);
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}
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if (sc->pci_dev != NULL) {
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vgapci_sc = device_get_softc(sc->pci_dev);
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*(device_t *)vgapci_sc = dev;
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device_printf(dev, "associated with %s\n",
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device_get_nameunit(sc->pci_dev));
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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_suspend(device_t dev)
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{
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vga_softc_t *sc;
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device_t isa_dev;
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int err, nbytes;
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err = 0;
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isa_dev = dev;
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sc = device_get_softc(isa_dev);
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if (sc->pci_dev != NULL)
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dev = sc->pci_dev;
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else
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err = bus_generic_suspend(isa_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 (err);
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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 (err);
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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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device_t isa_dev;
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isa_dev = dev;
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sc = device_get_softc(isa_dev);
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if (sc->pci_dev != NULL)
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dev = sc->pci_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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if (isa_dev != dev)
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return (0);
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return (bus_generic_resume(isa_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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