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/*
* Copyright 2007-2008 Luc Verhaegen <lverhaegen@novell.com>
* Copyright 2007-2008 Matthias Hopf <mhopf@novell.com>
* Copyright 2007-2008 Egbert Eich <eich@novell.com>
*
* 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"
struct rhdVGA {
Bool Stored;
CARD32 FBOffset;
CARD8 *FB;
int FBSize; /* 256kB */
CARD32 Render_Control;
CARD32 Mode_Control;
CARD32 HDP_Control;
CARD32 D1_Control;
CARD32 D2_Control;
};
/*
*
*/
void
RHDVGAInit(RHDPtr rhdPtr)
{
struct rhdVGA *VGA;
RHDFUNC(rhdPtr);
/* 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;
xf86DrvMsg(rhdPtr->scrnIndex, X_INFO, "Detected VGA mode.\n");
VGA = xnfcalloc(sizeof(struct rhdVGA), 1);
VGA->Stored = FALSE;
rhdPtr->VGA = VGA;
}
/*
* Thoroughly check whether our VGA FB is accessible.
*/
static CARD32
rhdVGAFBOffsetGet(RHDPtr rhdPtr)
{
CARD32 FBSize, VGAFBOffset, VGAFBSize = 256 * 1024;
CARD64 FBAddress = RHDMCGetFBLocation(rhdPtr, &FBSize);
CARD64 VGAFBAddress = RHDRegRead(rhdPtr, VGA_MEMORY_BASE_ADDRESS);
if (VGAFBAddress < FBAddress)
return 0xFFFFFFFF;
if ((VGAFBAddress + VGAFBSize) > (FBAddress + FBSize))
return 0xFFFFFFFF;
VGAFBOffset = VGAFBAddress - FBAddress; /* < FBSize, so 32bit */
if ((VGAFBOffset + VGAFBSize) >= rhdPtr->FbMapSize)
return 0xFFFFFFFF;
return VGAFBOffset;
}
/*
* This is (usually) ok, as VGASave is called after the memory has been mapped,
* but before the MC is set up. So the use of RHDMCGetFBLocation is correct in
* rhdVGAFBOffsetGet.
*/
static void
rhdVGASaveFB(RHDPtr rhdPtr)
{
struct rhdVGA *VGA = rhdPtr->VGA;
ASSERT(rhdPtr->FbBase);
RHDFUNC(rhdPtr);
VGA->FBOffset = rhdVGAFBOffsetGet(rhdPtr);
if (VGA->FBOffset == 0xFFFFFFFF) {
xf86DrvMsg(rhdPtr->scrnIndex, X_WARNING, "%s: Unable to access the VGA "
"framebuffer (0x%08X)\n", __func__,
(unsigned int) RHDRegRead(rhdPtr, VGA_MEMORY_BASE_ADDRESS));
if (VGA->FB)
xfree(VGA->FB);
VGA->FB = NULL;
VGA->FBSize = 0;
return;
}
VGA->FBSize = 256 * 1024;
RHDDebug(rhdPtr->scrnIndex, "%s: VGA FB Offset 0x%08X [0x%08X]\n",
__func__, VGA->FBOffset, VGA->FBSize);
if (!VGA->FB)
VGA->FB = xcalloc(VGA->FBSize, 1);
if (VGA->FB)
memcpy(VGA->FB, ((CARD8 *) rhdPtr->FbBase) + VGA->FBOffset,
VGA->FBSize);
else {
xf86DrvMsg(rhdPtr->scrnIndex, X_WARNING, "%s: Failed to allocate"
" space for storing the VGA framebuffer.\n", __func__);
VGA->FBOffset = 0xFFFFFFFF;
VGA->FBSize = 0;
}
}
/*
*
*/
void
RHDVGASave(RHDPtr rhdPtr)
{
struct rhdVGA *VGA = rhdPtr->VGA;
RHDFUNC(rhdPtr);
if (!VGA)
return; /* We don't need to warn , this is intended use */
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);
rhdVGASaveFB(rhdPtr);
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) {
xf86DrvMsg(rhdPtr->scrnIndex, X_ERROR,
"%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);
RHD_UNSETDEBUGFLAG(rhdPtr, VGA_SETUP);
}
/*
*
*/
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, D1VGA_MODE_ENABLE);
RHDRegMask(rhdPtr, D2VGA_CONTROL, 0, D2VGA_MODE_ENABLE);
RHD_SETDEBUGFLAG(rhdPtr, VGA_SETUP);
}
/*
*
*/
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)
xfree(VGA->FB);
xfree(VGA);
}
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