416 lines
9.7 KiB
C
416 lines
9.7 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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* $Id: $
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*/
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#include "fb.h"
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#include "opt_fb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <machine/console.h>
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#include <dev/fb/fbreg.h>
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/* local arrays */
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/*
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* We need at least one entry each in order to initialize a video card
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* for the kernel console. The arrays will be increased dynamically
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* when necessary.
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*/
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static video_adapter_t *adp_ini;
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static video_switch_t *vidsw_ini;
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static struct cdevsw *vidcdevsw_ini;
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static video_adapter_t **adapter = &adp_ini;
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static int adapters = 1;
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video_switch_t **vidsw = &vidsw_ini;
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static struct cdevsw **vidcdevsw = &vidcdevsw_ini;
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#define ARRAY_DELTA 4
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static void
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vid_realloc_array(void)
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{
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video_adapter_t **new_adp;
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video_switch_t **new_vidsw;
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struct cdevsw **new_cdevsw;
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int newsize;
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int s;
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s = spltty();
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newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA;
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new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK);
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new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, M_WAITOK);
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new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, M_WAITOK);
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bzero(new_adp, sizeof(*new_adp)*newsize);
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bzero(new_vidsw, sizeof(*new_vidsw)*newsize);
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bzero(new_cdevsw, sizeof(*new_cdevsw)*newsize);
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bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
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bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
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bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
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if (adapters > 1) {
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free(adapter, M_DEVBUF);
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free(vidsw, M_DEVBUF);
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free(vidcdevsw, M_DEVBUF);
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}
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adapter = new_adp;
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vidsw = new_vidsw;
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vidcdevsw = new_cdevsw;
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adapters = newsize;
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splx(s);
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if (bootverbose)
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printf("fb: new array size %d\n", adapters);
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}
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/*
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* Low-level frame buffer driver functions
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* frame buffer subdrivers, such as the VGA driver, call these functions
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* to initialize the video_adapter structure and register it to the virtual
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* frame buffer driver `fb'.
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*/
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/* initialize the video_adapter_t structure */
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void
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vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
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{
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adp->va_flags = 0;
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adp->va_name = name;
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adp->va_type = type;
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adp->va_unit = unit;
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}
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/* Register a video adapter */
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int
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vid_register(video_adapter_t *adp)
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{
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video_driver_t **list;
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video_driver_t *p;
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int index;
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for (index = 0; index < adapters; ++index) {
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if (adapter[index] == NULL)
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break;
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}
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if (index >= adapters)
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return -1;
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adp->va_index = index;
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adp->va_token = NULL;
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list = (video_driver_t **)videodriver_set.ls_items;
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while ((p = *list++) != NULL) {
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if (strcmp(p->name, adp->va_name) == 0) {
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adapter[index] = adp;
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vidsw[index] = p->vidsw;
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return index;
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}
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}
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return -1;
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}
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int
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vid_unregister(video_adapter_t *adp)
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{
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if ((adp->va_index < 0) || (adp->va_index >= adapters))
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return ENOENT;
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if (adapter[adp->va_index] != adp)
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return ENOENT;
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adapter[adp->va_index] = NULL;
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vidsw[adp->va_index] = NULL;
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return 0;
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}
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/* Get video I/O function table */
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video_switch_t
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*vid_get_switch(char *name)
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{
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video_driver_t **list;
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video_driver_t *p;
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list = (video_driver_t **)videodriver_set.ls_items;
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while ((p = *list++) != NULL) {
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if (strcmp(p->name, name) == 0)
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return p->vidsw;
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}
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return NULL;
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}
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/*
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* Video card client functions
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* Video card clients, such as the console driver `syscons' and the frame
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* buffer cdev driver, use these functions to claim and release a card for
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* exclusive use.
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*/
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/* find the video card specified by a driver name and a unit number */
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int
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vid_find_adapter(char *driver, int unit)
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{
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int i;
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for (i = 0; i < adapters; ++i) {
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if (adapter[i] == NULL)
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continue;
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if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
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continue;
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if ((unit != -1) && (adapter[i]->va_unit != unit))
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continue;
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return i;
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}
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return -1;
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}
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/* allocate a video card */
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int
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vid_allocate(char *driver, int unit, void *id)
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{
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int index;
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int s;
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s = spltty();
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index = vid_find_adapter(driver, unit);
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if (index >= 0) {
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if (adapter[index]->va_token) {
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splx(s);
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return -1;
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}
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adapter[index]->va_token = id;
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}
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splx(s);
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return index;
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}
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int
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vid_release(video_adapter_t *adp, void *id)
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{
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int error;
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int s;
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s = spltty();
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if (adp->va_token == NULL) {
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error = EINVAL;
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} else if (adp->va_token != id) {
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error = EPERM;
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} else {
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adp->va_token = NULL;
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error = 0;
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}
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splx(s);
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return error;
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}
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/* Get a video adapter structure */
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video_adapter_t
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*vid_get_adapter(int index)
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{
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if ((index < 0) || (index >= adapters))
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return NULL;
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return adapter[index];
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}
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/* Configure drivers: this is a backdoor for the console driver XXX */
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int
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vid_configure(int flags)
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{
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video_driver_t **list;
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video_driver_t *p;
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list = (video_driver_t **)videodriver_set.ls_items;
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while ((p = *list++) != NULL) {
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if (p->configure != NULL)
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(*p->configure)(flags);
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}
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return 0;
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}
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/*
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* Virtual frame buffer cdev driver functions
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* The virtual frame buffer driver dispatches driver functions to
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* appropriate subdrivers.
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*/
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#define DRIVER_NAME "fb"
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#ifdef FB_INSTALL_CDEV
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#define FB_UNIT(dev) minor(dev)
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#define FB_MKMINOR(unit) (u)
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#if notyet
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static d_open_t fbopen;
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static d_close_t fbclose;
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static d_ioctl_t fbioctl;
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static d_mmap_t fbmmap;
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#define CDEV_MAJOR 141 /* XXX */
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static struct cdevsw fb_cdevsw = {
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fbopen, fbclose, noread, nowrite, /* ??? */
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fbioctl, nostop, nullreset, nodevtotty,
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seltrue, fbmmap, NULL, DRIVER_NAME,
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NULL, -1, nodump, nopsize,
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};
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static void
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vfbattach(void *arg)
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{
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static int fb_devsw_installed = FALSE;
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dev_t dev;
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if (!fb_devsw_installed) {
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dev = makedev(CDEV_MAJOR, 0);
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cdevsw_add(&dev, &fb_cdevsw, NULL);
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fb_devsw_installed = TRUE;
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}
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}
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PSEUDO_SET(vfbattach, fb);
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#endif /* notyet */
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int
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fb_attach(dev_t dev, video_adapter *adp, struct cdevsw *cdevsw)
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{
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int s;
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if (adp->va_index >= adapters)
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return EINVAL;
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if (adapter[adp->va_index] != adp)
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return EINVAL;
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s = spltty();
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adp->va_minor = minor(dev);
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vidcdevsw[adp->va_index] = cdevsw;
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splx(s);
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/* XXX: DEVFS? */
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if (adp->va_index + 1 >= adapters)
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vid_realloc_array();
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printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
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return 0;
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}
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int
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fb_detach(dev_t dev, video_adapter *adp, struct cdevsw *cdevsw)
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{
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int s;
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if (adp->va_index >= adapters)
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return EINVAL;
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if (adapter[adp->va_index] != adp)
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return EINVAL;
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if (vidcdevsw[adp->va_index] != cdevsw)
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return EINVAL;
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s = spltty();
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vidcdevsw[adp->va_index] = NULL;
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splx(s);
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return 0;
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}
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#endif /* FB_INSTALL_CDEV */
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static char
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*adapter_name(int type)
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{
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static struct {
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int type;
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char *name;
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} names[] = {
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{ KD_MONO, "MDA" },
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{ KD_HERCULES, "Hercules" },
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{ KD_CGA, "CGA" },
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{ KD_EGA, "EGA" },
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{ KD_VGA, "VGA" },
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{ KD_PC98, "PC-98x1" },
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{ -1, "Unknown" },
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};
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int i;
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for (i = 0; names[i].type != -1; ++i)
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if (names[i].type == type)
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break;
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return names[i].name;
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}
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void
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fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
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{
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if (level <= 0)
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return;
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printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n",
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DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
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adapter_name(adp->va_type), adp->va_type, adp->va_flags);
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printf("%s%d: port:0x%x-0x%x, crtc:0x%x, mem:0x%x 0x%x\n",
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DRIVER_NAME, adp->va_index,
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adp->va_io_base, adp->va_io_base + adp->va_io_size - 1,
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adp->va_crtc_addr, adp->va_mem_base, adp->va_mem_size);
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printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
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DRIVER_NAME, adp->va_index,
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adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
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printf("%s%d: window:0x%x size:%dk gran:%dk, buf:0x%x size:%dk\n",
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DRIVER_NAME, adp->va_index,
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adp->va_window, adp->va_window_size/1024, adp->va_window_gran/1024,
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adp->va_buffer, adp->va_buffer_size/1024);
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}
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void
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fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
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int level)
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{
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if (level <= 0)
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return;
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printf("%s%d: %s, mode:%d, flags:0x%x ",
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driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
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if (info->vi_flags & V_INFO_GRAPHICS)
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printf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
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info->vi_width, info->vi_height,
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info->vi_depth, info->vi_planes,
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info->vi_cwidth, info->vi_cheight);
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else
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printf("T %dx%d, font:%dx%d, ",
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info->vi_width, info->vi_height,
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info->vi_cwidth, info->vi_cheight);
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printf("win:0x%x\n", info->vi_window);
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}
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