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/*
* Copyright © 2006 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif
#include "xf86.h"
#include "xf86DDC.h"
#include "xf86_OSproc.h"
#include "dgaproc.h"
#include "xf86Crtc.h"
#include "xf86Modes.h"
#include "gcstruct.h"
#include "scrnintstr.h"
#include "windowstr.h"
static Bool
xf86_dga_get_modes (ScreenPtr pScreen)
{
ScrnInfoPtr scrn = xf86Screens[pScreen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
DGAModePtr modes, mode;
DisplayModePtr display_mode;
int bpp = scrn->bitsPerPixel >> 3;
int num;
num = 0;
display_mode = scrn->modes;
while (display_mode)
{
num++;
display_mode = display_mode->next;
if (display_mode == scrn->modes)
break;
}
if (!num)
return FALSE;
modes = xalloc(num * sizeof(DGAModeRec));
if (!modes)
return FALSE;
num = 0;
display_mode = scrn->modes;
while (display_mode)
{
mode = modes + num++;
mode->mode = display_mode;
mode->flags = DGA_CONCURRENT_ACCESS;
if (display_mode->Flags & V_DBLSCAN)
mode->flags |= DGA_DOUBLESCAN;
if (display_mode->Flags & V_INTERLACE)
mode->flags |= DGA_INTERLACED;
mode->byteOrder = scrn->imageByteOrder;
mode->depth = scrn->depth;
mode->bitsPerPixel = scrn->bitsPerPixel;
mode->red_mask = scrn->mask.red;
mode->green_mask = scrn->mask.green;
mode->blue_mask = scrn->mask.blue;
mode->visualClass = (bpp == 1) ? PseudoColor : TrueColor;
mode->viewportWidth = display_mode->HDisplay;
mode->viewportHeight = display_mode->VDisplay;
mode->xViewportStep = (bpp == 3) ? 2 : 1;
mode->yViewportStep = 1;
mode->viewportFlags = DGA_FLIP_RETRACE;
mode->offset = 0;
mode->address = 0;
mode->imageWidth = mode->viewportWidth;
mode->imageHeight = mode->viewportHeight;
mode->bytesPerScanline = (mode->imageWidth * scrn->bitsPerPixel) >> 3;
mode->pixmapWidth = mode->imageWidth;
mode->pixmapHeight = mode->imageHeight;
mode->maxViewportX = 0;
mode->maxViewportY = 0;
display_mode = display_mode->next;
if (display_mode == scrn->modes)
break;
}
if (xf86_config->dga_modes)
xfree (xf86_config->dga_modes);
xf86_config->dga_nmode = num;
xf86_config->dga_modes = modes;
return TRUE;
}
static Bool
xf86_dga_set_mode(ScrnInfoPtr scrn, DGAModePtr display_mode)
{
ScreenPtr pScreen = scrn->pScreen;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
if (!display_mode)
{
if (xf86_config->dga_save_mode)
{
xf86SwitchMode(pScreen, xf86_config->dga_save_mode);
xf86_config->dga_save_mode = NULL;
}
}
else
{
if (!xf86_config->dga_save_mode)
{
xf86_config->dga_save_mode = scrn->currentMode;
xf86SwitchMode(pScreen, display_mode->mode);
}
}
return TRUE;
}
static int
xf86_dga_get_viewport(ScrnInfoPtr scrn)
{
return 0;
}
static void
xf86_dga_set_viewport(ScrnInfoPtr scrn, int x, int y, int flags)
{
scrn->AdjustFrame(scrn->pScreen->myNum, x, y, flags);
}
static Bool
xf86_dga_open_framebuffer(ScrnInfoPtr scrn,
char **name,
unsigned char **mem, int *size, int *offset, int *flags)
{
return FALSE;
}
static void
xf86_dga_close_framebuffer(ScrnInfoPtr scrn)
{
}
static DGAFunctionRec xf86_dga_funcs = {
xf86_dga_open_framebuffer,
xf86_dga_close_framebuffer,
xf86_dga_set_mode,
xf86_dga_set_viewport,
xf86_dga_get_viewport,
NULL,
NULL,
NULL,
NULL
};
Bool
xf86DiDGAReInit (ScreenPtr pScreen)
{
ScrnInfoPtr scrn = xf86Screens[pScreen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
if (!DGAAvailable(pScreen->myNum))
return TRUE;
if (!xf86_dga_get_modes (pScreen))
return FALSE;
return DGAReInitModes (pScreen, xf86_config->dga_modes, xf86_config->dga_nmode);
}
Bool
xf86DiDGAInit (ScreenPtr pScreen, unsigned long dga_address)
{
ScrnInfoPtr scrn = xf86Screens[pScreen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
if (DGAAvailable(pScreen->myNum))
return TRUE;
xf86_config->dga_flags = 0;
xf86_config->dga_address = 0;
xf86_config->dga_width = 0;
xf86_config->dga_height = 0;
xf86_config->dga_stride = 0;
if (!xf86_dga_get_modes (pScreen))
return FALSE;
return DGAInit(pScreen, &xf86_dga_funcs, xf86_config->dga_modes, xf86_config->dga_nmode);
}
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