kolibrios/programs/system/drivers/rhd/rhd_vga.c
Sergey Semyonov (Serge) 4cc87fbe7d Radeon modesetting. Father of all "C" drivers.
git-svn-id: svn://kolibrios.org@955 a494cfbc-eb01-0410-851d-a64ba20cac60
2008-12-13 07:51:28 +00:00

174 lines
4.6 KiB
C

/*
* Copyright 2007 Luc Verhaegen <lverhaegen@novell.com>
* Copyright 2007 Matthias Hopf <mhopf@novell.com>
* Copyright 2007 Egbert Eich <eich@novell.com>
* Copyright 2007 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#if HAVE_XF86_ANSIC_H
# include "xf86_ansic.h"
#endif
#include "rhd.h"
#include "rhd_vga.h"
#include "rhd_regs.h"
#include "rhd_mc.h"
/*
*
*/
void
RHDVGAInit(RHDPtr rhdPtr)
{
static struct rhdVGA VGA;
/* Check whether one of our VGA bits is set */
if (!(_RHDRegRead(rhdPtr, VGA_RENDER_CONTROL) & 0x00030000) &&
(_RHDRegRead(rhdPtr, VGA_HDP_CONTROL) & 0x00000010) &&
!(_RHDRegRead(rhdPtr, D1VGA_CONTROL) & 0x00000001) &&
!(_RHDRegRead(rhdPtr, D2VGA_CONTROL) & 0x00000001))
return;
DBG(dbgprintf("Detected VGA mode.\n"));
VGA.Stored = FALSE;
rhdPtr->VGA = &VGA;
}
#if 0
/*
*
*/
void
RHDVGASave(RHDPtr rhdPtr)
{
struct rhdVGA *VGA = &rhdPtr->VGA;
VGA->Render_Control = _RHDRegRead(rhdPtr, VGA_RENDER_CONTROL);
VGA->Mode_Control = _RHDRegRead(rhdPtr, VGA_MODE_CONTROL);
VGA->HDP_Control = _RHDRegRead(rhdPtr, VGA_HDP_CONTROL);
VGA->D1_Control = _RHDRegRead(rhdPtr, D1VGA_CONTROL);
VGA->D2_Control = _RHDRegRead(rhdPtr, D2VGA_CONTROL);
/* Store our VGA FB */
VGA->FBOffset =
_RHDRegRead(rhdPtr, VGA_MEMORY_BASE_ADDRESS) - rhdPtr->FbIntAddress;
/* Could be that the VGA internal address no longer is pointing to what
we know as our FB memory, in which case we should give up cleanly. */
if (VGA->FBOffset < (unsigned) (rhdPtr->videoRam * 1024)) {
VGA->FBSize = 256 * 1024;
VGA->FB = calloc(VGA->FBSize, 1);
if (VGA->FB)
memcpy(VGA->FB, ((CARD8 *) rhdPtr->FbBase) + VGA->FBOffset,
VGA->FBSize);
else {
dbgprintf("%s: Failed to allocate"
" space for storing the VGA framebuffer.\n", __func__);
VGA->FBSize = 0;
VGA->FB = NULL;
}
} else {
dbgprintf("%s: VGA FB Offset (0x%08X) is "
"out of range of the Cards Internal FB Address (0x%08X)\n",
__func__, (int) RHDRegRead(rhdPtr, VGA_MEMORY_BASE_ADDRESS),
rhdPtr->FbIntAddress);
VGA->FBOffset = 0xFFFFFFFF;
VGA->FBSize = 0;
VGA->FB = NULL;
}
VGA->Stored = TRUE;
}
/*
*
*/
void
RHDVGARestore(RHDPtr rhdPtr)
{
struct rhdVGA *VGA = rhdPtr->VGA;
RHDFUNC(rhdPtr);
if (!VGA)
return; /* We don't need to warn , this is intended use */
if (!VGA->Stored) {
dbgprintf("%s: trying to restore uninitialized values.\n", __func__);
return;
}
if (VGA->FB)
memcpy(((CARD8 *) rhdPtr->FbBase) + VGA->FBOffset,
VGA->FB, VGA->FBSize);
RHDRegWrite(rhdPtr, VGA_RENDER_CONTROL, VGA->Render_Control);
RHDRegWrite(rhdPtr, VGA_MODE_CONTROL, VGA->Mode_Control);
RHDRegWrite(rhdPtr, VGA_HDP_CONTROL, VGA->HDP_Control);
RHDRegWrite(rhdPtr, D1VGA_CONTROL, VGA->D1_Control);
RHDRegWrite(rhdPtr, D2VGA_CONTROL, VGA->D2_Control);
}
#endif
/*
*
*/
void
RHDVGADisable(RHDPtr rhdPtr)
{
RHDFUNC(rhdPtr);
_RHDRegMask(rhdPtr, VGA_RENDER_CONTROL, 0, 0x00030000);
_RHDRegMask(rhdPtr, VGA_MODE_CONTROL, 0, 0x00000030);
_RHDRegMask(rhdPtr, VGA_HDP_CONTROL, 0x00010010, 0x00010010);
_RHDRegMask(rhdPtr, D1VGA_CONTROL, 0, 0x00000001);
_RHDRegMask(rhdPtr, D2VGA_CONTROL, 0, 0x00000001);
}
/*
*
*/
void
RHDVGADestroy(RHDPtr rhdPtr)
{
struct rhdVGA *VGA = rhdPtr->VGA;
RHDFUNC(rhdPtr);
if (!VGA)
return; /* We don't need to warn , this is intended use */
if (VGA->FB)
free(VGA->FB);
rhdPtr->VGA=NULL;
}