bb029b61d9
implemented with macros. This patch improves code readability. Reasoning behind vidd_* is a sort of "video discipline". List of macros is supposed to be complete--all methods of video_switch ought to have their respective macros from now on. Functionally, this code should be no-op. My intention is to leave current behaviour of touched code as is. No objections: rwatson Silence on: freebsd-current@ Approved by: cognet
762 lines
17 KiB
C
762 lines
17 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/bus.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/uio.h>
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#include <sys/fbio.h>
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#include <sys/linker_set.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <dev/fb/fbreg.h>
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SET_DECLARE(videodriver_set, const video_driver_t);
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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 int vid_malloc;
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static int adapters = 1;
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static video_adapter_t *adp_ini;
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static video_adapter_t **adapter = &adp_ini;
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static video_switch_t *vidsw_ini;
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video_switch_t **vidsw = &vidsw_ini;
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#ifdef FB_INSTALL_CDEV
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static struct cdevsw *vidcdevsw_ini;
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static struct cdevsw **vidcdevsw = &vidcdevsw_ini;
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#endif
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#define ARRAY_DELTA 4
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static int
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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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#ifdef FB_INSTALL_CDEV
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struct cdevsw **new_cdevsw;
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#endif
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int newsize;
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int s;
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if (!vid_malloc)
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return ENOMEM;
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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 | M_ZERO);
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new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF,
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M_WAITOK | M_ZERO);
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#ifdef FB_INSTALL_CDEV
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new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF,
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M_WAITOK | M_ZERO);
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#endif
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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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#ifdef FB_INSTALL_CDEV
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bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
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#endif
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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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#ifdef FB_INSTALL_CDEV
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free(vidcdevsw, M_DEVBUF);
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#endif
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}
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adapter = new_adp;
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vidsw = new_vidsw;
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#ifdef FB_INSTALL_CDEV
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vidcdevsw = new_cdevsw;
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#endif
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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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return 0;
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}
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static void
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vid_malloc_init(void *arg)
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{
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vid_malloc = TRUE;
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}
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SYSINIT(vid_mem, SI_SUB_KMEM, SI_ORDER_ANY, vid_malloc_init, NULL);
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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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const video_driver_t **list;
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const 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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if (vid_realloc_array())
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return -1;
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}
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adp->va_index = index;
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adp->va_token = NULL;
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SET_FOREACH(list, videodriver_set) {
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p = *list;
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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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const video_driver_t **list;
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const video_driver_t *p;
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SET_FOREACH(list, videodriver_set) {
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p = *list;
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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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const video_driver_t **list;
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const video_driver_t *p;
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SET_FOREACH(list, videodriver_set) {
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p = *list;
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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 FB_DRIVER_NAME "fb"
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#ifdef FB_INSTALL_CDEV
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#if 0 /* experimental */
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static devclass_t fb_devclass;
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static int fbprobe(device_t dev);
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static int fbattach(device_t dev);
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static device_method_t fb_methods[] = {
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DEVMETHOD(device_probe, fbprobe),
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DEVMETHOD(device_attach, fbattach),
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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 fb_driver = {
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FB_DRIVER_NAME,
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fb_methods,
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0,
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};
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static int
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fbprobe(device_t dev)
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{
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int unit;
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unit = device_get_unit(dev);
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if (unit >= adapters)
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return ENXIO;
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if (adapter[unit] == NULL)
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return ENXIO;
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device_set_desc(dev, "generic frame buffer");
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return 0;
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}
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static int
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fbattach(device_t dev)
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{
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printf("fbattach: about to attach children\n");
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bus_generic_attach(dev);
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return 0;
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}
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#endif
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#define FB_UNIT(dev) minor(dev)
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#define FB_MKMINOR(unit) (u)
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#if 0 /* experimental */
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static d_open_t fbopen;
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static d_close_t fbclose;
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static d_read_t fbread;
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static d_write_t fbwrite;
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static d_ioctl_t fbioctl;
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static d_mmap_t fbmmap;
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static struct cdevsw fb_cdevsw = {
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.d_version = D_VERSION,
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.d_flags = D_NEEDGIANT,
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.d_open = fbopen,
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.d_close = fbclose,
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.d_read = fbread,
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.d_write = fbwrite,
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.d_ioctl = fbioctl,
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.d_mmap = fbmmap,
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.d_name = FB_DRIVER_NAME,
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};
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#endif
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static int
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fb_modevent(module_t mod, int type, void *data)
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{
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switch (type) {
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case MOD_LOAD:
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break;
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case MOD_UNLOAD:
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printf("fb module unload - not possible for this module type\n");
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return EINVAL;
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default:
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return EOPNOTSUPP;
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}
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return 0;
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}
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static moduledata_t fb_mod = {
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"fb",
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fb_modevent,
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NULL
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};
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DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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int
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fb_attach(int unit, video_adapter_t *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 = unit;
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vidcdevsw[adp->va_index] = cdevsw;
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splx(s);
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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(int unit, video_adapter_t *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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/*
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* Generic frame buffer cdev driver functions
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* Frame buffer subdrivers may call these functions to implement common
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* driver functions.
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*/
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int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
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struct thread *td)
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{
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int s;
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s = spltty();
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if (!(sc->gfb_flags & FB_OPEN))
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sc->gfb_flags |= FB_OPEN;
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splx(s);
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return 0;
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}
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int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
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struct thread *td)
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{
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int s;
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s = spltty();
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sc->gfb_flags &= ~FB_OPEN;
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splx(s);
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return 0;
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}
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int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
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int flag)
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{
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int size;
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int offset;
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int error;
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int len;
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error = 0;
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size = adp->va_buffer_size/adp->va_info.vi_planes;
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while (uio->uio_resid > 0) {
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if (uio->uio_offset >= size)
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break;
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offset = uio->uio_offset%adp->va_window_size;
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len = imin(uio->uio_resid, size - uio->uio_offset);
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len = imin(len, adp->va_window_size - offset);
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if (len <= 0)
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break;
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vidd_set_win_org(adp, uio->uio_offset);
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error = uiomove((caddr_t)(adp->va_window + offset), len, uio);
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if (error)
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break;
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}
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return error;
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}
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int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
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int flag)
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{
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return ENODEV;
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}
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int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
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caddr_t arg, int flag, struct thread *td)
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{
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int error;
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if (adp == NULL) /* XXX */
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return ENXIO;
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error = vidd_ioctl(adp, cmd, arg);
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if (error == ENOIOCTL)
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error = ENODEV;
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return error;
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}
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int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
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vm_offset_t *paddr, int prot)
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{
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return vidd_mmap(adp, offset, paddr, prot);
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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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{ KD_TGA, "TGA" },
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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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/*
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* Generic low-level frame buffer functions
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* The low-level functions in the frame buffer subdriver may use these
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* functions.
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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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FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
|
|
adapter_name(adp->va_type), adp->va_type, adp->va_flags);
|
|
printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n",
|
|
FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base,
|
|
(u_long)adp->va_io_base + adp->va_io_size - 1,
|
|
(u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base,
|
|
adp->va_mem_size);
|
|
printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
|
|
FB_DRIVER_NAME, adp->va_index,
|
|
adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
|
|
printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n",
|
|
FB_DRIVER_NAME, adp->va_index,
|
|
(void *)adp->va_window, (int)adp->va_window_size/1024,
|
|
(int)adp->va_window_gran/1024, (void *)adp->va_buffer,
|
|
(int)adp->va_buffer_size/1024);
|
|
}
|
|
|
|
void
|
|
fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
|
|
int level)
|
|
{
|
|
if (level <= 0)
|
|
return;
|
|
|
|
printf("%s%d: %s, mode:%d, flags:0x%x ",
|
|
driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
|
|
if (info->vi_flags & V_INFO_GRAPHICS)
|
|
printf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
|
|
info->vi_width, info->vi_height,
|
|
info->vi_depth, info->vi_planes,
|
|
info->vi_cwidth, info->vi_cheight);
|
|
else
|
|
printf("T %dx%d, font:%dx%d, ",
|
|
info->vi_width, info->vi_height,
|
|
info->vi_cwidth, info->vi_cheight);
|
|
printf("win:0x%lx\n", (u_long)info->vi_window);
|
|
}
|
|
|
|
int
|
|
fb_type(int adp_type)
|
|
{
|
|
static struct {
|
|
int fb_type;
|
|
int va_type;
|
|
} types[] = {
|
|
{ FBTYPE_MDA, KD_MONO },
|
|
{ FBTYPE_HERCULES, KD_HERCULES },
|
|
{ FBTYPE_CGA, KD_CGA },
|
|
{ FBTYPE_EGA, KD_EGA },
|
|
{ FBTYPE_VGA, KD_VGA },
|
|
{ FBTYPE_PC98, KD_PC98 },
|
|
{ FBTYPE_TGA, KD_TGA },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < sizeof(types)/sizeof(types[0]); ++i) {
|
|
if (types[i].va_type == adp_type)
|
|
return types[i].fb_type;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
|
|
{
|
|
int error;
|
|
int s;
|
|
|
|
/* assert(adp != NULL) */
|
|
|
|
error = 0;
|
|
s = spltty();
|
|
|
|
switch (cmd) {
|
|
|
|
case FBIO_ADAPTER: /* get video adapter index */
|
|
*(int *)arg = adp->va_index;
|
|
break;
|
|
|
|
case FBIO_ADPTYPE: /* get video adapter type */
|
|
*(int *)arg = adp->va_type;
|
|
break;
|
|
|
|
case FBIO_ADPINFO: /* get video adapter info */
|
|
((video_adapter_info_t *)arg)->va_index = adp->va_index;
|
|
((video_adapter_info_t *)arg)->va_type = adp->va_type;
|
|
bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name,
|
|
imin(strlen(adp->va_name) + 1,
|
|
sizeof(((video_adapter_info_t *)arg)->va_name)));
|
|
((video_adapter_info_t *)arg)->va_unit = adp->va_unit;
|
|
((video_adapter_info_t *)arg)->va_flags = adp->va_flags;
|
|
((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base;
|
|
((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size;
|
|
((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr;
|
|
((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base;
|
|
((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size;
|
|
((video_adapter_info_t *)arg)->va_window
|
|
#ifdef __i386__
|
|
= vtophys(adp->va_window);
|
|
#else
|
|
= adp->va_window;
|
|
#endif
|
|
((video_adapter_info_t *)arg)->va_window_size
|
|
= adp->va_window_size;
|
|
((video_adapter_info_t *)arg)->va_window_gran
|
|
= adp->va_window_gran;
|
|
((video_adapter_info_t *)arg)->va_window_orig
|
|
= adp->va_window_orig;
|
|
((video_adapter_info_t *)arg)->va_unused0
|
|
#ifdef __i386__
|
|
= (adp->va_buffer) ? vtophys(adp->va_buffer) : 0;
|
|
#else
|
|
= adp->va_buffer;
|
|
#endif
|
|
((video_adapter_info_t *)arg)->va_buffer_size
|
|
= adp->va_buffer_size;
|
|
((video_adapter_info_t *)arg)->va_mode = adp->va_mode;
|
|
((video_adapter_info_t *)arg)->va_initial_mode
|
|
= adp->va_initial_mode;
|
|
((video_adapter_info_t *)arg)->va_initial_bios_mode
|
|
= adp->va_initial_bios_mode;
|
|
((video_adapter_info_t *)arg)->va_line_width
|
|
= adp->va_line_width;
|
|
((video_adapter_info_t *)arg)->va_disp_start.x
|
|
= adp->va_disp_start.x;
|
|
((video_adapter_info_t *)arg)->va_disp_start.y
|
|
= adp->va_disp_start.y;
|
|
break;
|
|
|
|
case FBIO_MODEINFO: /* get mode information */
|
|
error = vidd_get_info(adp,
|
|
((video_info_t *)arg)->vi_mode,
|
|
(video_info_t *)arg);
|
|
if (error)
|
|
error = ENODEV;
|
|
break;
|
|
|
|
case FBIO_FINDMODE: /* find a matching video mode */
|
|
error = vidd_query_mode(adp, (video_info_t *)arg);
|
|
break;
|
|
|
|
case FBIO_GETMODE: /* get video mode */
|
|
*(int *)arg = adp->va_mode;
|
|
break;
|
|
|
|
case FBIO_SETMODE: /* set video mode */
|
|
error = vidd_set_mode(adp, *(int *)arg);
|
|
if (error)
|
|
error = ENODEV; /* EINVAL? */
|
|
break;
|
|
|
|
case FBIO_GETWINORG: /* get frame buffer window origin */
|
|
*(u_int *)arg = adp->va_window_orig;
|
|
break;
|
|
|
|
case FBIO_GETDISPSTART: /* get display start address */
|
|
((video_display_start_t *)arg)->x = adp->va_disp_start.x;
|
|
((video_display_start_t *)arg)->y = adp->va_disp_start.y;
|
|
break;
|
|
|
|
case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
|
|
*(u_int *)arg = adp->va_line_width;
|
|
break;
|
|
|
|
case FBIO_BLANK: /* blank display */
|
|
error = vidd_blank_display(adp, *(int *)arg);
|
|
break;
|
|
|
|
case FBIO_GETPALETTE: /* get color palette */
|
|
case FBIO_SETPALETTE: /* set color palette */
|
|
/* XXX */
|
|
|
|
case FBIOPUTCMAP:
|
|
case FBIOGETCMAP:
|
|
case FBIOPUTCMAPI:
|
|
case FBIOGETCMAPI:
|
|
/* XXX */
|
|
|
|
case FBIO_SETWINORG: /* set frame buffer window origin */
|
|
case FBIO_SETDISPSTART: /* set display start address */
|
|
case FBIO_SETLINEWIDTH: /* set scan line width in pixel */
|
|
|
|
case FBIOGTYPE:
|
|
case FBIOGATTR:
|
|
case FBIOSVIDEO:
|
|
case FBIOGVIDEO:
|
|
case FBIOVERTICAL:
|
|
case FBIOSCURSOR:
|
|
case FBIOGCURSOR:
|
|
case FBIOSCURPOS:
|
|
case FBIOGCURPOS:
|
|
case FBIOGCURMAX:
|
|
case FBIOMONINFO:
|
|
case FBIOGXINFO:
|
|
|
|
default:
|
|
error = ENODEV;
|
|
break;
|
|
}
|
|
|
|
splx(s);
|
|
return error;
|
|
}
|