This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_fbvideo.c
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SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Framebuffer console based SDL video driver implementation.
*/
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
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#include <asm/page.h> /* For definition of PAGE_SIZE */
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#include <linux/vt.h>
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#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_fbvideo.h"
#include "SDL_fbmouse_c.h"
#include "SDL_fbevents_c.h"
#include "SDL_fb3dfx.h"
#include "SDL_fbmatrox.h"
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#include "SDL_fbriva.h"
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/*#define FBCON_DEBUG*/
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#if defined(i386) && defined(FB_TYPE_VGA_PLANES)
#define VGA16_FBCON_SUPPORT
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#include <sys/io.h> /* For ioperm() */
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#ifndef FB_AUX_VGA_PLANES_VGA4
#define FB_AUX_VGA_PLANES_VGA4 0
#endif
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static inline void outb (unsigned char value, unsigned short port)
{
__asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port));
}
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#endif /* FB_TYPE_VGA_PLANES */
/* A list of video resolutions that we query for (sorted largest to smallest) */
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static const SDL_Rect checkres[] = {
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{0, 0, 1600, 1200}, /* 16 bpp: 0x11E, or 286 */
{0, 0, 1408, 1056}, /* 16 bpp: 0x19A, or 410 */
{0, 0, 1280, 1024}, /* 16 bpp: 0x11A, or 282 */
{0, 0, 1152, 864}, /* 16 bpp: 0x192, or 402 */
{0, 0, 1024, 768}, /* 16 bpp: 0x117, or 279 */
{0, 0, 960, 720}, /* 16 bpp: 0x18A, or 394 */
{0, 0, 800, 600}, /* 16 bpp: 0x114, or 276 */
{0, 0, 768, 576}, /* 16 bpp: 0x182, or 386 */
{0, 0, 720, 576}, /* PAL */
{0, 0, 720, 480}, /* NTSC */
{0, 0, 640, 480}, /* 16 bpp: 0x111, or 273 */
{0, 0, 640, 400}, /* 8 bpp: 0x100, or 256 */
{0, 0, 512, 384},
{0, 0, 320, 240},
{0, 0, 320, 200}
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};
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static const struct
{
int xres;
int yres;
int pixclock;
int left;
int right;
int upper;
int lower;
int hslen;
int vslen;
int sync;
int vmode;
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} vesa_timings[] = {
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#ifdef USE_VESA_TIMINGS /* Only tested on Matrox Millenium I */
{
640, 400, 39771, 48, 16, 39, 8, 96, 2, 2, 0}, /* 70 Hz */
{
640, 480, 39683, 48, 16, 33, 10, 96, 2, 0, 0}, /* 60 Hz */
{
768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0}, /* 60 Hz */
{
800, 600, 24038, 144, 24, 28, 8, 112, 6, 0, 0}, /* 60 Hz */
{
960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0}, /* 60 Hz */
{
1024, 768, 15386, 160, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0}, /* 60 Hz */
{
1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0}, /* 60 Hz */
{
1600, 1200, /*? */ 0, 272, 48, 32, 5, 152, 5, 0, 0}, /* 60 Hz */
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#else
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/* You can generate these timings from your XF86Config file using
the 'modeline2fb' perl script included with the fbset package.
These timings were generated for Matrox Millenium I, 15" monitor.
*/
{
320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 2}, /* 70 Hz */
{
320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 2}, /* 72 Hz */
{
512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 0}, /* 78 Hz */
{
640, 400, 31746, 96, 32, 41, 1, 64, 3, 2, 0}, /* 85 Hz */
{
640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 0}, /* 75 Hz */
{
768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0}, /* 60 Hz */
{
800, 600, 20000, 64, 56, 23, 37, 120, 6, 3, 0}, /* 72 Hz */
{
960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0}, /* 60 Hz */
{
1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 0}, /* 70 Hz */
{
1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0}, /* 60 Hz */
{
1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0}, /* 60 Hz */
{
1600, 1200, /*? */ 0, 272, 48, 32, 5, 152, 5, 0, 0}, /* 60 Hz */
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#endif
};
/* Initialization/Query functions */
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static int FB_VideoInit (_THIS, SDL_PixelFormat * vformat);
static SDL_Rect **FB_ListModes (_THIS, SDL_PixelFormat * format,
Uint32 flags);
static SDL_Surface *FB_SetVideoMode (_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
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#ifdef VGA16_FBCON_SUPPORT
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static SDL_Surface *FB_SetVGA16Mode (_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
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#endif
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static int FB_SetColors (_THIS, int firstcolor, int ncolors,
SDL_Color * colors);
static void FB_VideoQuit (_THIS);
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/* Hardware surface functions */
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static int FB_InitHWSurfaces (_THIS, SDL_Surface * screen, char *base,
int size);
static void FB_FreeHWSurfaces (_THIS);
static int FB_AllocHWSurface (_THIS, SDL_Surface * surface);
static int FB_LockHWSurface (_THIS, SDL_Surface * surface);
static void FB_UnlockHWSurface (_THIS, SDL_Surface * surface);
static void FB_FreeHWSurface (_THIS, SDL_Surface * surface);
static void FB_WaitVBL (_THIS);
static void FB_WaitIdle (_THIS);
static int FB_FlipHWSurface (_THIS, SDL_Surface * surface);
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/* Internal palette functions */
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static void FB_SavePalette (_THIS, struct fb_fix_screeninfo *finfo,
struct fb_var_screeninfo *vinfo);
static void FB_RestorePalette (_THIS);
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/* Small wrapper for mmap() so we can play nicely with no-mmu hosts
* (non-mmu hosts disallow the MAP_SHARED flag) */
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static void *
do_mmap (void *start, size_t length, int prot, int flags, int fd,
off_t offset)
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void *ret;
ret = mmap (start, length, prot, flags, fd, offset);
if (ret == (char *) -1 && (flags & MAP_SHARED)) {
ret = mmap (start, length, prot,
(flags & ~MAP_SHARED) | MAP_PRIVATE, fd, offset);
}
return ret;
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}
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/* FB driver bootstrap functions */
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static int
FB_Available (void)
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{
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int console = -1;
/* Added check for /fb/0 (devfs) */
/* but - use environment variable first... if it fails, still check defaults */
int idx = 0;
const char *SDL_fbdevs[4] = { NULL, "/dev/fb0", "/dev/fb/0", NULL };
SDL_fbdevs[0] = SDL_getenv ("SDL_FBDEV");
if (!SDL_fbdevs[0])
idx++;
for (; SDL_fbdevs[idx]; idx++) {
console = open (SDL_fbdevs[idx], O_RDWR, 0);
if (console >= 0) {
close (console);
break;
}
}
return (console >= 0);
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}
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static void
FB_DeleteDevice (SDL_VideoDevice * device)
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{
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SDL_free (device->hidden);
SDL_free (device);
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}
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static SDL_VideoDevice *
FB_CreateDevice (int devindex)
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{
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SDL_VideoDevice *this;
/* Initialize all variables that we clean on shutdown */
this = (SDL_VideoDevice *) SDL_malloc (sizeof (SDL_VideoDevice));
if (this) {
SDL_memset (this, 0, (sizeof *this));
this->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc ((sizeof *this->hidden));
}
if ((this == NULL) || (this->hidden == NULL)) {
SDL_OutOfMemory ();
if (this) {
SDL_free (this);
}
return (0);
}
SDL_memset (this->hidden, 0, (sizeof *this->hidden));
wait_vbl = FB_WaitVBL;
wait_idle = FB_WaitIdle;
mouse_fd = -1;
keyboard_fd = -1;
/* Set the function pointers */
this->VideoInit = FB_VideoInit;
this->ListModes = FB_ListModes;
this->SetVideoMode = FB_SetVideoMode;
this->SetColors = FB_SetColors;
this->UpdateRects = NULL;
this->VideoQuit = FB_VideoQuit;
this->AllocHWSurface = FB_AllocHWSurface;
this->CheckHWBlit = NULL;
this->FillHWRect = NULL;
this->SetHWColorKey = NULL;
this->SetHWAlpha = NULL;
this->LockHWSurface = FB_LockHWSurface;
this->UnlockHWSurface = FB_UnlockHWSurface;
this->FlipHWSurface = FB_FlipHWSurface;
this->FreeHWSurface = FB_FreeHWSurface;
this->SetCaption = NULL;
this->SetIcon = NULL;
this->IconifyWindow = NULL;
this->GrabInput = NULL;
this->GetWMInfo = NULL;
this->InitOSKeymap = FB_InitOSKeymap;
this->PumpEvents = FB_PumpEvents;
this->free = FB_DeleteDevice;
return this;
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}
VideoBootStrap FBCON_bootstrap = {
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"fbcon", "Linux Framebuffer Console",
FB_Available, FB_CreateDevice
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};
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#define FB_MODES_DB "/etc/fb.modes"
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static int
read_fbmodes_line (FILE * f, char *line, int length)
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int blank;
char *c;
int i;
blank = 0;
/* find a relevant line */
do {
if (fgets (line, length, f) <= 0)
return 0;
c = line;
while (((*c == '\t') || (*c == ' ')) && (*c != 0))
c++;
if ((*c == '\n') || (*c == '#') || (*c == 0))
blank = 1;
else
blank = 0;
}
while (blank);
/* remove whitespace at the begining of the string */
i = 0;
do {
line[i] = c[i];
i++;
}
while (c[i] != 0);
return 1;
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static int
read_fbmodes_mode (FILE * f, struct fb_var_screeninfo *vinfo)
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char line[1024];
char option[256];
/* Find a "geometry" */
do {
if (read_fbmodes_line (f, line, sizeof (line)) == 0)
return 0;
if (SDL_strncmp (line, "geometry", 8) == 0)
break;
}
while (1);
SDL_sscanf (line, "geometry %d %d %d %d %d", &vinfo->xres, &vinfo->yres,
&vinfo->xres_virtual, &vinfo->yres_virtual,
&vinfo->bits_per_pixel);
if (read_fbmodes_line (f, line, sizeof (line)) == 0)
return 0;
SDL_sscanf (line, "timings %d %d %d %d %d %d %d", &vinfo->pixclock,
&vinfo->left_margin, &vinfo->right_margin,
&vinfo->upper_margin, &vinfo->lower_margin, &vinfo->hsync_len,
&vinfo->vsync_len);
vinfo->sync = 0;
vinfo->vmode = FB_VMODE_NONINTERLACED;
/* Parse misc options */
do {
if (read_fbmodes_line (f, line, sizeof (line)) == 0)
return 0;
if (SDL_strncmp (line, "hsync", 5) == 0) {
SDL_sscanf (line, "hsync %s", option);
if (SDL_strncmp (option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_HOR_HIGH_ACT;
} else if (SDL_strncmp (line, "vsync", 5) == 0) {
SDL_sscanf (line, "vsync %s", option);
if (SDL_strncmp (option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_VERT_HIGH_ACT;
} else if (SDL_strncmp (line, "csync", 5) == 0) {
SDL_sscanf (line, "csync %s", option);
if (SDL_strncmp (option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_COMP_HIGH_ACT;
} else if (SDL_strncmp (line, "extsync", 5) == 0) {
SDL_sscanf (line, "extsync %s", option);
if (SDL_strncmp (option, "true", 4) == 0)
vinfo->sync |= FB_SYNC_EXT;
} else if (SDL_strncmp (line, "laced", 5) == 0) {
SDL_sscanf (line, "laced %s", option);
if (SDL_strncmp (option, "true", 4) == 0)
vinfo->vmode |= FB_VMODE_INTERLACED;
} else if (SDL_strncmp (line, "double", 6) == 0) {
SDL_sscanf (line, "double %s", option);
if (SDL_strncmp (option, "true", 4) == 0)
vinfo->vmode |= FB_VMODE_DOUBLE;
}
}
while (SDL_strncmp (line, "endmode", 7) != 0);
return 1;
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static int
FB_CheckMode (_THIS, struct fb_var_screeninfo *vinfo,
int index, unsigned int *w, unsigned int *h)
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{
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int mode_okay;
mode_okay = 0;
vinfo->bits_per_pixel = (index + 1) * 8;
vinfo->xres = *w;
vinfo->xres_virtual = *w;
vinfo->yres = *h;
vinfo->yres_virtual = *h;
vinfo->activate = FB_ACTIVATE_TEST;
if (ioctl (console_fd, FBIOPUT_VSCREENINFO, vinfo) == 0) {
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#ifdef FBCON_DEBUG
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fprintf (stderr,
"Checked mode %dx%d at %d bpp, got mode %dx%d at %d bpp\n",
*w, *h, (index + 1) * 8, vinfo->xres, vinfo->yres,
vinfo->bits_per_pixel);
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#endif
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if ((((vinfo->bits_per_pixel + 7) / 8) - 1) == index) {
*w = vinfo->xres;
*h = vinfo->yres;
mode_okay = 1;
}
}
return mode_okay;
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}
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static int
FB_AddMode (_THIS, int index, unsigned int w, unsigned int h,
int check_timings)
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{
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SDL_Rect *mode;
int i;
int next_mode;
/* Check to see if we already have this mode */
if (SDL_nummodes[index] > 0) {
mode = SDL_modelist[index][SDL_nummodes[index] - 1];
if ((mode->w == w) && (mode->h == h)) {
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#ifdef FBCON_DEBUG
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fprintf (stderr,
"We already have mode %dx%d at %d bytes per pixel\n",
w, h, index + 1);
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#endif
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return (0);
}
}
/* Only allow a mode if we have a valid timing for it */
if (check_timings) {
int found_timing = 0;
for (i = 0; i < (sizeof (vesa_timings) / sizeof (vesa_timings[0]));
++i) {
if ((w == vesa_timings[i].xres) &&
(h == vesa_timings[i].yres) && vesa_timings[i].pixclock) {
found_timing = 1;
break;
}
}
if (!found_timing) {
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#ifdef FBCON_DEBUG
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fprintf (stderr, "No valid timing line for mode %dx%d\n", w, h);
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#endif
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return (0);
}
}
/* Set up the new video mode rectangle */
mode = (SDL_Rect *) SDL_malloc (sizeof *mode);
if (mode == NULL) {
SDL_OutOfMemory ();
return (-1);
}
mode->x = 0;
mode->y = 0;
mode->w = w;
mode->h = h;
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#ifdef FBCON_DEBUG
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fprintf (stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h,
index + 1);
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#endif
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/* Allocate the new list of modes, and fill in the new mode */
next_mode = SDL_nummodes[index];
SDL_modelist[index] = (SDL_Rect **)
SDL_realloc (SDL_modelist[index],
(1 + next_mode + 1) * sizeof (SDL_Rect *));
if (SDL_modelist[index] == NULL) {
SDL_OutOfMemory ();
SDL_nummodes[index] = 0;
SDL_free (mode);
return (-1);
}
SDL_modelist[index][next_mode] = mode;
SDL_modelist[index][next_mode + 1] = NULL;
SDL_nummodes[index]++;
return (0);
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}
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static int
cmpmodes (const void *va, const void *vb)
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const SDL_Rect *a = *(const SDL_Rect **) va;
const SDL_Rect *b = *(const SDL_Rect **) vb;
if (a->h == b->h)
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return b->w - a->w;
else
return b->h - a->h;
}
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static void
FB_SortModes (_THIS)
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int i;
for (i = 0; i < NUM_MODELISTS; ++i) {
if (SDL_nummodes[i] > 0) {
SDL_qsort (SDL_modelist[i], SDL_nummodes[i],
sizeof *SDL_modelist[i], cmpmodes);
}
}
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static int
FB_VideoInit (_THIS, SDL_PixelFormat * vformat)
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{
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struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
int i, j;
int current_index;
unsigned int current_w;
unsigned int current_h;
const char *SDL_fbdev;
FILE *modesdb;
/* Initialize the library */
SDL_fbdev = SDL_getenv ("SDL_FBDEV");
if (SDL_fbdev == NULL) {
SDL_fbdev = "/dev/fb0";
}
console_fd = open (SDL_fbdev, O_RDWR, 0);
if (console_fd < 0) {
SDL_SetError ("Unable to open %s", SDL_fbdev);
return (-1);
}
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#if !SDL_THREADS_DISABLED
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/* Create the hardware surface lock mutex */
hw_lock = SDL_CreateMutex ();
if (hw_lock == NULL) {
SDL_SetError ("Unable to create lock mutex");
FB_VideoQuit (this);
return (-1);
}
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#endif
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/* Get the type of video hardware */
if (ioctl (console_fd, FBIOGET_FSCREENINFO, &finfo) < 0) {
SDL_SetError ("Couldn't get console hardware info");
FB_VideoQuit (this);
return (-1);
}
switch (finfo.type) {
case FB_TYPE_PACKED_PIXELS:
/* Supported, no worries.. */
break;
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#ifdef VGA16_FBCON_SUPPORT
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case FB_TYPE_VGA_PLANES:
/* VGA16 is supported, but that's it */
if (finfo.type_aux == FB_AUX_VGA_PLANES_VGA4) {
if (ioperm (0x3b4, 0x3df - 0x3b4 + 1, 1) < 0) {
SDL_SetError ("No I/O port permissions");
FB_VideoQuit (this);
return (-1);
}
this->SetVideoMode = FB_SetVGA16Mode;
break;
}
/* Fall through to unsupported case */
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#endif /* VGA16_FBCON_SUPPORT */
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710
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713
714
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718
default:
SDL_SetError ("Unsupported console hardware");
FB_VideoQuit (this);
return (-1);
}
switch (finfo.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
case FB_VISUAL_STATIC_PSEUDOCOLOR:
case FB_VISUAL_DIRECTCOLOR:
break;
default:
SDL_SetError ("Unsupported console hardware");
FB_VideoQuit (this);
return (-1);
}
/* Check if the user wants to disable hardware acceleration */
{
const char *fb_accel;
fb_accel = SDL_getenv ("SDL_FBACCEL");
if (fb_accel) {
finfo.accel = SDL_atoi (fb_accel);
}
}
/* Memory map the device, compensating for buggy PPC mmap() */
mapped_offset = (((long) finfo.smem_start) -
(((long) finfo.smem_start) & ~(PAGE_SIZE - 1)));
mapped_memlen = finfo.smem_len + mapped_offset;
mapped_mem = do_mmap (NULL, mapped_memlen,
PROT_READ | PROT_WRITE, MAP_SHARED, console_fd, 0);
if (mapped_mem == (char *) -1) {
SDL_SetError ("Unable to memory map the video hardware");
mapped_mem = NULL;
FB_VideoQuit (this);
return (-1);
}
/* Determine the current screen depth */
if (ioctl (console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError ("Couldn't get console pixel format");
FB_VideoQuit (this);
return (-1);
}
vformat->BitsPerPixel = vinfo.bits_per_pixel;
if (vformat->BitsPerPixel < 8) {
/* Assuming VGA16, we handle this via a shadow framebuffer */
vformat->BitsPerPixel = 8;
}
for (i = 0; i < vinfo.red.length; ++i) {
vformat->Rmask <<= 1;
vformat->Rmask |= (0x00000001 << vinfo.red.offset);
}
for (i = 0; i < vinfo.green.length; ++i) {
vformat->Gmask <<= 1;
vformat->Gmask |= (0x00000001 << vinfo.green.offset);
}
for (i = 0; i < vinfo.blue.length; ++i) {
vformat->Bmask <<= 1;
vformat->Bmask |= (0x00000001 << vinfo.blue.offset);
}
saved_vinfo = vinfo;
/* Save hardware palette, if needed */
FB_SavePalette (this, &finfo, &vinfo);
/* If the I/O registers are available, memory map them so we
can take advantage of any supported hardware acceleration.
*/
vinfo.accel_flags = 0; /* Temporarily reserve registers */
ioctl (console_fd, FBIOPUT_VSCREENINFO, &vinfo);
if (finfo.accel && finfo.mmio_len) {
mapped_iolen = finfo.mmio_len;
mapped_io = do_mmap (NULL, mapped_iolen, PROT_READ | PROT_WRITE,
MAP_SHARED, console_fd, mapped_memlen);
if (mapped_io == (char *) -1) {
/* Hmm, failed to memory map I/O registers */
mapped_io = NULL;
}
}
/* Query for the list of available video modes */
current_w = vinfo.xres;
current_h = vinfo.yres;
current_index = ((vinfo.bits_per_pixel + 7) / 8) - 1;
modesdb = fopen (FB_MODES_DB, "r");
for (i = 0; i < NUM_MODELISTS; ++i) {
SDL_nummodes[i] = 0;
SDL_modelist[i] = NULL;
}
if (SDL_getenv ("SDL_FB_BROKEN_MODES") != NULL) {
FB_AddMode (this, current_index, current_w, current_h, 0);
} else if (modesdb) {
while (read_fbmodes_mode (modesdb, &vinfo)) {
for (i = 0; i < NUM_MODELISTS; ++i) {
unsigned int w, h;
/* See if we are querying for the current mode */
w = vinfo.xres;
h = vinfo.yres;
if (i == current_index) {
if ((current_w > w) || (current_h > h)) {
/* Only check once */
FB_AddMode (this, i, current_w, current_h, 0);
current_index = -1;
}
}
if (FB_CheckMode (this, &vinfo, i, &w, &h)) {
FB_AddMode (this, i, w, h, 0);
}
}
}
fclose (modesdb);
FB_SortModes (this);
} else {
for (i = 0; i < NUM_MODELISTS; ++i) {
for (j = 0; j < (sizeof (checkres) / sizeof (checkres[0])); ++j) {
unsigned int w, h;
/* See if we are querying for the current mode */
w = checkres[j].w;
h = checkres[j].h;
if (i == current_index) {
if ((current_w > w) || (current_h > h)) {
/* Only check once */
FB_AddMode (this, i, current_w, current_h, 0);
current_index = -1;
}
}
if (FB_CheckMode (this, &vinfo, i, &w, &h)) {
FB_AddMode (this, i, w, h, 1);
}
}
}
}
/* Fill in our hardware acceleration capabilities */
this->info.current_w = current_w;
this->info.current_h = current_h;
this->info.wm_available = 0;
this->info.hw_available = 1;
this->info.video_mem = finfo.smem_len / 1024;
if (mapped_io) {
switch (finfo.accel) {
case FB_ACCEL_MATROX_MGA2064W:
case FB_ACCEL_MATROX_MGA1064SG:
case FB_ACCEL_MATROX_MGA2164W:
case FB_ACCEL_MATROX_MGA2164W_AGP:
case FB_ACCEL_MATROX_MGAG100:
/*case FB_ACCEL_MATROX_MGAG200: G200 acceleration broken! */
case FB_ACCEL_MATROX_MGAG400:
719
#ifdef FBACCEL_DEBUG
720
printf ("Matrox hardware accelerator!\n");
721
#endif
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724
FB_MatroxAccel (this, finfo.accel);
break;
case FB_ACCEL_3DFX_BANSHEE:
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#ifdef FBACCEL_DEBUG
726
printf ("3DFX hardware accelerator!\n");
727
#endif
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731
FB_3DfxAccel (this, finfo.accel);
break;
case FB_ACCEL_NV3:
case FB_ACCEL_NV4:
732
#ifdef FBACCEL_DEBUG
733
printf ("NVidia hardware accelerator!\n");
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736
737
FB_RivaAccel (this, finfo.accel);
break;
default:
738
#ifdef FBACCEL_DEBUG
739
printf ("Unknown hardware accelerator.\n");
740
#endif
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break;
}
}
/* Enable mouse and keyboard support */
if (FB_OpenKeyboard (this) < 0) {
FB_VideoQuit (this);
return (-1);
}
if (FB_OpenMouse (this) < 0) {
const char *sdl_nomouse;
sdl_nomouse = SDL_getenv ("SDL_NOMOUSE");
if (!sdl_nomouse) {
SDL_SetError ("Unable to open mouse");
FB_VideoQuit (this);
return (-1);
}
}
/* We're done! */
return (0);
763
764
}
765
766
static SDL_Rect **
FB_ListModes (_THIS, SDL_PixelFormat * format, Uint32 flags)
767
{
768
return (SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
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771
}
/* Various screen update functions available */
772
static void FB_DirectUpdate (_THIS, int numrects, SDL_Rect * rects);
773
#ifdef VGA16_FBCON_SUPPORT
774
static void FB_VGA16Update (_THIS, int numrects, SDL_Rect * rects);
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777
#endif
#ifdef FBCON_DEBUG
778
779
static void
print_vinfo (struct fb_var_screeninfo *vinfo)
780
{
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fprintf (stderr, "Printing vinfo:\n");
fprintf (stderr, "\txres: %d\n", vinfo->xres);
fprintf (stderr, "\tyres: %d\n", vinfo->yres);
fprintf (stderr, "\txres_virtual: %d\n", vinfo->xres_virtual);
fprintf (stderr, "\tyres_virtual: %d\n", vinfo->yres_virtual);
fprintf (stderr, "\txoffset: %d\n", vinfo->xoffset);
fprintf (stderr, "\tyoffset: %d\n", vinfo->yoffset);
fprintf (stderr, "\tbits_per_pixel: %d\n", vinfo->bits_per_pixel);
fprintf (stderr, "\tgrayscale: %d\n", vinfo->grayscale);
fprintf (stderr, "\tnonstd: %d\n", vinfo->nonstd);
fprintf (stderr, "\tactivate: %d\n", vinfo->activate);
fprintf (stderr, "\theight: %d\n", vinfo->height);
fprintf (stderr, "\twidth: %d\n", vinfo->width);
fprintf (stderr, "\taccel_flags: %d\n", vinfo->accel_flags);
fprintf (stderr, "\tpixclock: %d\n", vinfo->pixclock);
fprintf (stderr, "\tleft_margin: %d\n", vinfo->left_margin);
fprintf (stderr, "\tright_margin: %d\n", vinfo->right_margin);
fprintf (stderr, "\tupper_margin: %d\n", vinfo->upper_margin);
fprintf (stderr, "\tlower_margin: %d\n", vinfo->lower_margin);
fprintf (stderr, "\thsync_len: %d\n", vinfo->hsync_len);
fprintf (stderr, "\tvsync_len: %d\n", vinfo->vsync_len);
fprintf (stderr, "\tsync: %d\n", vinfo->sync);
fprintf (stderr, "\tvmode: %d\n", vinfo->vmode);
fprintf (stderr, "\tred: %d/%d\n", vinfo->red.length, vinfo->red.offset);
fprintf (stderr, "\tgreen: %d/%d\n", vinfo->green.length,
vinfo->green.offset);
fprintf (stderr, "\tblue: %d/%d\n", vinfo->blue.length,
vinfo->blue.offset);
fprintf (stderr, "\talpha: %d/%d\n", vinfo->transp.length,
vinfo->transp.offset);
811
}
812
813
static void
print_finfo (struct fb_fix_screeninfo *finfo)
814
{
815
816
817
818
819
820
821
822
823
824
825
826
827
fprintf (stderr, "Printing finfo:\n");
fprintf (stderr, "\tsmem_start = %p\n", (char *) finfo->smem_start);
fprintf (stderr, "\tsmem_len = %d\n", finfo->smem_len);
fprintf (stderr, "\ttype = %d\n", finfo->type);
fprintf (stderr, "\ttype_aux = %d\n", finfo->type_aux);
fprintf (stderr, "\tvisual = %d\n", finfo->visual);
fprintf (stderr, "\txpanstep = %d\n", finfo->xpanstep);
fprintf (stderr, "\typanstep = %d\n", finfo->ypanstep);
fprintf (stderr, "\tywrapstep = %d\n", finfo->ywrapstep);
fprintf (stderr, "\tline_length = %d\n", finfo->line_length);
fprintf (stderr, "\tmmio_start = %p\n", (char *) finfo->mmio_start);
fprintf (stderr, "\tmmio_len = %d\n", finfo->mmio_len);
fprintf (stderr, "\taccel = %d\n", finfo->accel);
828
829
830
}
#endif
831
832
static int
choose_fbmodes_mode (struct fb_var_screeninfo *vinfo)
833
{
834
835
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841
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846
847
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850
851
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857
858
859
860
861
int matched;
FILE *modesdb;
struct fb_var_screeninfo cinfo;
matched = 0;
modesdb = fopen (FB_MODES_DB, "r");
if (modesdb) {
/* Parse the mode definition file */
while (read_fbmodes_mode (modesdb, &cinfo)) {
if ((vinfo->xres == cinfo.xres && vinfo->yres == cinfo.yres)
&& (!matched
|| (vinfo->bits_per_pixel == cinfo.bits_per_pixel))) {
vinfo->pixclock = cinfo.pixclock;
vinfo->left_margin = cinfo.left_margin;
vinfo->right_margin = cinfo.right_margin;
vinfo->upper_margin = cinfo.upper_margin;
vinfo->lower_margin = cinfo.lower_margin;
vinfo->hsync_len = cinfo.hsync_len;
vinfo->vsync_len = cinfo.vsync_len;
if (matched) {
break;
}
matched = 1;
}
}
fclose (modesdb);
}
return (matched);
862
863
}
864
865
static int
choose_vesa_mode (struct fb_var_screeninfo *vinfo)
866
{
867
868
869
870
871
872
873
874
int matched;
int i;
/* Check for VESA timings */
matched = 0;
for (i = 0; i < (sizeof (vesa_timings) / sizeof (vesa_timings[0])); ++i) {
if ((vinfo->xres == vesa_timings[i].xres) &&
(vinfo->yres == vesa_timings[i].yres)) {
875
#ifdef FBCON_DEBUG
876
877
fprintf (stderr, "Using VESA timings for %dx%d\n",
vinfo->xres, vinfo->yres);
878
#endif
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
if (vesa_timings[i].pixclock) {
vinfo->pixclock = vesa_timings[i].pixclock;
}
vinfo->left_margin = vesa_timings[i].left;
vinfo->right_margin = vesa_timings[i].right;
vinfo->upper_margin = vesa_timings[i].upper;
vinfo->lower_margin = vesa_timings[i].lower;
vinfo->hsync_len = vesa_timings[i].hslen;
vinfo->vsync_len = vesa_timings[i].vslen;
vinfo->sync = vesa_timings[i].sync;
vinfo->vmode = vesa_timings[i].vmode;
matched = 1;
break;
}
}
return (matched);
895
896
897
}
#ifdef VGA16_FBCON_SUPPORT
898
899
900
static SDL_Surface *
FB_SetVGA16Mode (_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
901
{
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
/* Set the terminal into graphics mode */
if (FB_EnterGraphicsMode (this) < 0) {
return (NULL);
}
/* Restore the original palette */
FB_RestorePalette (this);
/* Set the video mode and get the final screen format */
if (ioctl (console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError ("Couldn't get console screen info");
return (NULL);
}
cache_vinfo = vinfo;
919
#ifdef FBCON_DEBUG
920
921
fprintf (stderr, "Printing actual vinfo:\n");
print_vinfo (&vinfo);
922
#endif
923
924
925
926
927
928
929
930
931
932
933
934
if (!SDL_ReallocFormat (current, bpp, 0, 0, 0, 0)) {
return (NULL);
}
current->format->palette->ncolors = 16;
/* Get the fixed information about the console hardware.
This is necessary since finfo.line_length changes.
*/
if (ioctl (console_fd, FBIOGET_FSCREENINFO, &finfo) < 0) {
SDL_SetError ("Couldn't get console hardware info");
return (NULL);
}
935
#ifdef FBCON_DEBUG
936
937
fprintf (stderr, "Printing actual finfo:\n");
print_finfo (&finfo);
938
939
#endif
940
941
/* Save hardware palette, if needed */
FB_SavePalette (this, &finfo, &vinfo);
943
944
945
946
947
948
/* Set up the new mode framebuffer */
current->flags = SDL_FULLSCREEN;
current->w = vinfo.xres;
current->h = vinfo.yres;
current->pitch = current->w;
current->pixels = SDL_malloc (current->h * current->pitch);
950
951
/* Set the update rectangle function */
this->UpdateRects = FB_VGA16Update;
953
954
/* We're done */
return (current);
955
956
957
}
#endif /* VGA16_FBCON_SUPPORT */
958
959
960
static SDL_Surface *
FB_SetVideoMode (_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
961
{
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
int i;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
char *surfaces_mem;
int surfaces_len;
/* Set the terminal into graphics mode */
if (FB_EnterGraphicsMode (this) < 0) {
return (NULL);
}
/* Restore the original palette */
FB_RestorePalette (this);
/* Set the video mode and get the final screen format */
if (ioctl (console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError ("Couldn't get console screen info");
return (NULL);
}
984
#ifdef FBCON_DEBUG
985
986
fprintf (stderr, "Printing original vinfo:\n");
print_vinfo (&vinfo);
987
#endif
988
989
990
991
992
993
994
995
996
997
998
999
1000
if ((vinfo.xres != width) || (vinfo.yres != height) ||
(vinfo.bits_per_pixel != bpp) || (flags & SDL_DOUBLEBUF)) {
vinfo.activate = FB_ACTIVATE_NOW;
vinfo.accel_flags = 0;
vinfo.bits_per_pixel = bpp;
vinfo.xres = width;
vinfo.xres_virtual = width;
vinfo.yres = height;
if (flags & SDL_DOUBLEBUF) {
vinfo.yres_virtual = height * 2;
} else {
vinfo.yres_virtual = height;
}