freebsd-dev/sys/dev/fb/fb.c
Kazutaka YOKOTA f359876ff1 syscons
- Bring down the splash screen when a vty is opened for the first
  time.
- Make sure the splash screen/screen saver is stopped before
  switching vtys.
- Read and save initial values in the BIOS data area early.
  VESA BIOS may change BIOS data values when switching modes.
- Fix missing '&' operator.
- Move ISA specific part of driver initialization to syscons_isa.c.

atkbd
- kbdtables.h is now in /sys/dev/kbd.

all
- Adjust for forthcoming alpha port.  Submitted by: dfr
1999-01-19 11:31:22 +00:00

422 lines
9.9 KiB
C

/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: fb.c,v 1.2 1999/01/12 10:35:50 yokota Exp $
*/
#include "fb.h"
#include "opt_fb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <machine/console.h>
#include <dev/fb/fbreg.h>
/* local arrays */
/*
* We need at least one entry each in order to initialize a video card
* for the kernel console. The arrays will be increased dynamically
* when necessary.
*/
static int adapters = 1;
static video_adapter_t *adp_ini;
static video_adapter_t **adapter = &adp_ini;
static video_switch_t *vidsw_ini;
video_switch_t **vidsw = &vidsw_ini;
#ifdef FB_INSTALL_CDEV
#define ARRAY_DELTA 4
static struct cdevsw *vidcdevsw_ini;
static struct cdevsw **vidcdevsw = &vidcdevsw_ini;
static void
vid_realloc_array(void)
{
video_adapter_t **new_adp;
video_switch_t **new_vidsw;
struct cdevsw **new_cdevsw;
int newsize;
int s;
s = spltty();
newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA;
new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK);
new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, M_WAITOK);
new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, M_WAITOK);
bzero(new_adp, sizeof(*new_adp)*newsize);
bzero(new_vidsw, sizeof(*new_vidsw)*newsize);
bzero(new_cdevsw, sizeof(*new_cdevsw)*newsize);
bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
if (adapters > 1) {
free(adapter, M_DEVBUF);
free(vidsw, M_DEVBUF);
free(vidcdevsw, M_DEVBUF);
}
adapter = new_adp;
vidsw = new_vidsw;
vidcdevsw = new_cdevsw;
adapters = newsize;
splx(s);
if (bootverbose)
printf("fb: new array size %d\n", adapters);
}
#endif /* FB_INSTALL_CDEV */
/*
* Low-level frame buffer driver functions
* frame buffer subdrivers, such as the VGA driver, call these functions
* to initialize the video_adapter structure and register it to the virtual
* frame buffer driver `fb'.
*/
/* initialize the video_adapter_t structure */
void
vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
{
adp->va_flags = 0;
adp->va_name = name;
adp->va_type = type;
adp->va_unit = unit;
}
/* Register a video adapter */
int
vid_register(video_adapter_t *adp)
{
video_driver_t **list;
video_driver_t *p;
int index;
for (index = 0; index < adapters; ++index) {
if (adapter[index] == NULL)
break;
}
if (index >= adapters)
return -1;
adp->va_index = index;
adp->va_token = NULL;
list = (video_driver_t **)videodriver_set.ls_items;
while ((p = *list++) != NULL) {
if (strcmp(p->name, adp->va_name) == 0) {
adapter[index] = adp;
vidsw[index] = p->vidsw;
return index;
}
}
return -1;
}
int
vid_unregister(video_adapter_t *adp)
{
if ((adp->va_index < 0) || (adp->va_index >= adapters))
return ENOENT;
if (adapter[adp->va_index] != adp)
return ENOENT;
adapter[adp->va_index] = NULL;
vidsw[adp->va_index] = NULL;
return 0;
}
/* Get video I/O function table */
video_switch_t
*vid_get_switch(char *name)
{
video_driver_t **list;
video_driver_t *p;
list = (video_driver_t **)videodriver_set.ls_items;
while ((p = *list++) != NULL) {
if (strcmp(p->name, name) == 0)
return p->vidsw;
}
return NULL;
}
/*
* Video card client functions
* Video card clients, such as the console driver `syscons' and the frame
* buffer cdev driver, use these functions to claim and release a card for
* exclusive use.
*/
/* find the video card specified by a driver name and a unit number */
int
vid_find_adapter(char *driver, int unit)
{
int i;
for (i = 0; i < adapters; ++i) {
if (adapter[i] == NULL)
continue;
if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
continue;
if ((unit != -1) && (adapter[i]->va_unit != unit))
continue;
return i;
}
return -1;
}
/* allocate a video card */
int
vid_allocate(char *driver, int unit, void *id)
{
int index;
int s;
s = spltty();
index = vid_find_adapter(driver, unit);
if (index >= 0) {
if (adapter[index]->va_token) {
splx(s);
return -1;
}
adapter[index]->va_token = id;
}
splx(s);
return index;
}
int
vid_release(video_adapter_t *adp, void *id)
{
int error;
int s;
s = spltty();
if (adp->va_token == NULL) {
error = EINVAL;
} else if (adp->va_token != id) {
error = EPERM;
} else {
adp->va_token = NULL;
error = 0;
}
splx(s);
return error;
}
/* Get a video adapter structure */
video_adapter_t
*vid_get_adapter(int index)
{
if ((index < 0) || (index >= adapters))
return NULL;
return adapter[index];
}
/* Configure drivers: this is a backdoor for the console driver XXX */
int
vid_configure(int flags)
{
video_driver_t **list;
video_driver_t *p;
list = (video_driver_t **)videodriver_set.ls_items;
while ((p = *list++) != NULL) {
if (p->configure != NULL)
(*p->configure)(flags);
}
return 0;
}
/*
* Virtual frame buffer cdev driver functions
* The virtual frame buffer driver dispatches driver functions to
* appropriate subdrivers.
*/
#define DRIVER_NAME "fb"
#ifdef FB_INSTALL_CDEV
#define FB_UNIT(dev) minor(dev)
#define FB_MKMINOR(unit) (u)
#if notyet
static d_open_t fbopen;
static d_close_t fbclose;
static d_ioctl_t fbioctl;
static d_mmap_t fbmmap;
#define CDEV_MAJOR 141 /* XXX */
static struct cdevsw fb_cdevsw = {
fbopen, fbclose, noread, nowrite, /* ??? */
fbioctl, nostop, nullreset, nodevtotty,
seltrue, fbmmap, NULL, DRIVER_NAME,
NULL, -1, nodump, nopsize,
};
static void
vfbattach(void *arg)
{
static int fb_devsw_installed = FALSE;
dev_t dev;
if (!fb_devsw_installed) {
dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev, &fb_cdevsw, NULL);
fb_devsw_installed = TRUE;
}
}
PSEUDO_SET(vfbattach, fb);
#endif /* notyet */
int
fb_attach(dev_t dev, video_adapter *adp, struct cdevsw *cdevsw)
{
int s;
if (adp->va_index >= adapters)
return EINVAL;
if (adapter[adp->va_index] != adp)
return EINVAL;
s = spltty();
adp->va_minor = minor(dev);
vidcdevsw[adp->va_index] = cdevsw;
splx(s);
/* XXX: DEVFS? */
if (adp->va_index + 1 >= adapters)
vid_realloc_array();
printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
return 0;
}
int
fb_detach(dev_t dev, video_adapter *adp, struct cdevsw *cdevsw)
{
int s;
if (adp->va_index >= adapters)
return EINVAL;
if (adapter[adp->va_index] != adp)
return EINVAL;
if (vidcdevsw[adp->va_index] != cdevsw)
return EINVAL;
s = spltty();
vidcdevsw[adp->va_index] = NULL;
splx(s);
return 0;
}
#endif /* FB_INSTALL_CDEV */
static char
*adapter_name(int type)
{
static struct {
int type;
char *name;
} names[] = {
{ KD_MONO, "MDA" },
{ KD_HERCULES, "Hercules" },
{ KD_CGA, "CGA" },
{ KD_EGA, "EGA" },
{ KD_VGA, "VGA" },
{ KD_PC98, "PC-98x1" },
{ -1, "Unknown" },
};
int i;
for (i = 0; names[i].type != -1; ++i)
if (names[i].type == type)
break;
return names[i].name;
}
void
fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
{
if (level <= 0)
return;
printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n",
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%x-0x%x, crtc:0x%x, mem:0x%x 0x%x\n",
DRIVER_NAME, adp->va_index,
adp->va_io_base, adp->va_io_base + adp->va_io_size - 1,
adp->va_crtc_addr, adp->va_mem_base, adp->va_mem_size);
printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
DRIVER_NAME, adp->va_index,
adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
printf("%s%d: window:0x%x size:%dk gran:%dk, buf:0x%x size:%dk\n",
DRIVER_NAME, adp->va_index,
adp->va_window, (int)adp->va_window_size/1024,
(int)adp->va_window_gran/1024, 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%x\n", info->vi_window);
}