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/*
* Copyright 2003 Red Hat, Inc. All Rights Reserved.
*
* 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, sub license,
* 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 (including the
* next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/via/via_memory.c,v 1.5 2004/01/29 03:13:25 dawes Exp $ */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "xf86fbman.h"
#include "via_compose.h"
#include "via_capture.h"
#include "via.h"
#include "ddmpeg.h"
#include "xf86drm.h"
#include "via_overlay.h"
#include "via_driver.h"
#include "via_regrec.h"
#include "via_priv.h"
#include "via_swov.h"
#include "via_common.h"
/*
* Isolate the wonders of X memory allocation, DRI memory allocation
* and 4.3 or 4.4 differences in once abstraction
*
* The pool code indicates who provided the memory
* 0 - nobody
* 1 - xf86 linear (Used in 4.4 only)
* 2 - DRM
* 3 - Preallocated buffer (Used in 4.3 only)
*/
void VIAFreeLinear(VIAMemPtr mem)
{
VIAPtr pVia;
DEBUG(ErrorF("Freed %lu (pool %d)\n", mem->base, mem->pool));
switch(mem->pool)
{
case 0:
return;
case 1:
xf86FreeOffscreenLinear(mem->linear);
mem->linear = NULL;
mem->pool = 0;
return;
case 2:
#ifdef XF86DRI
if(drmCommandWrite(mem->drm_fd, DRM_VIA_FREEMEM,
&mem->drm, sizeof(drmViaMem)) < 0)
ErrorF("DRM module failed free.\n");
#endif
mem->pool = 0;
return;
case 3:
mem->pool = 0;
pVia = mem->pVia;
pVia->SWOVUsed[mem->slot] = 0;
return;
}
}
#ifdef X_USE_LINEARFB
static unsigned long offScreenLinear(VIAMemPtr mem, ScrnInfoPtr pScrn,
unsigned long size) {
int depth = (pScrn->bitsPerPixel + 7) >> 3;
/* Make sure we don't truncate requested size */
mem->linear = xf86AllocateOffscreenLinear(pScrn->pScreen,
( size + depth - 1 ) / depth,
32, NULL, NULL, NULL);
if(mem->linear == NULL)
return BadAlloc;
mem->base = mem->linear->offset * depth;
mem->pool = 1;
return Success;
}
#endif /* X_USE_LINEARFB */
unsigned long VIAAllocLinear(VIAMemPtr mem, ScrnInfoPtr pScrn, unsigned long size)
{
#if defined(XF86DRI) || !defined(X_USE_LINEARFB)
VIAPtr pVia = VIAPTR(pScrn);
#endif
#ifdef XF86DRI
int ret;
if(mem->pool)
ErrorF("VIA Double Alloc.\n");
if(pVia->directRenderingEnabled) {
mem->drm_fd = pVia->drmFD;
mem->drm.context = 1;
mem->drm.size = size;
mem->drm.type = VIDEO;
ret = drmCommandWrite(mem->drm_fd, DRM_VIA_ALLOCMEM, &mem->drm,
sizeof(drmViaMem));
if (ret || (size != mem->drm.size)) {
#ifdef X_USE_LINEARFB
/*
* Try XY Fallback before failing.
*/
if (Success == offScreenLinear(mem, pScrn, size))
return Success;
#endif /* X_USE_LINEARFB */
ErrorF("DRM memory allocation failed\n");
return BadAlloc;
}
mem->base = mem->drm.offset;
mem->pool = 2;
DEBUG(ErrorF("Fulfilled via DRI at %lu\n", mem->base));
return 0;
}
#endif /* XF86DRI */
#ifdef X_USE_LINEARFB
{
if (Success == offScreenLinear(mem, pScrn, size))
return Success;
ErrorF("Linear memory allocation failed\n");
return BadAlloc;
}
#else /* X_USE_LINEARFB */
{
int i;
if(size > pVia->SWOVSize)
return BadAccess;
for(i = 0; i < MEM_BLOCKS; i++) {
if(!pVia->SWOVUsed[i]) {
pVia->SWOVUsed[i] = 1;
mem->pool = 3;
mem->base = pVia->SWOVPool + pVia->SWOVSize * i;
mem->pVia = pVia;
mem->slot = i;
DEBUG(ErrorF("Fulfilled via pool at %lu\n", mem->base));
return 0;
}
}
}
ErrorF("Out of pools.\n");
return BadAlloc;
#endif /* X_USE_LINEARFB */
}
#ifndef X_USE_LINEARFB
static void
VIAInitPool(VIAPtr pVia, unsigned long offset, unsigned long size)
{
DEBUG(ErrorF("VIAInitPool %lu bytes at %lu\n", size, offset));
size /= 4;
DEBUG(ErrorF("VIAInitPool %d pools of %lu bytes\n", MEM_BLOCKS, size));
pVia->SWOVPool = offset;
pVia->SWOVSize = size;
}
#endif /* !X_USE_LINEARFB */
void VIAInitLinear(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
VIAPtr pVia = VIAPTR(pScrn);
#ifdef X_USE_LINEARFB
/*
* In the 44 path we must take care not to truncate offset and size so
* that we get overlaps. If there is available memory below line 2048
* we use it.
*/
unsigned long offset = (pVia->FBFreeStart + pVia->Bpp - 1 ) / pVia->Bpp;
unsigned long size = pVia->FBFreeEnd / pVia->Bpp - offset;
if (size > 0) xf86InitFBManagerLinear(pScreen, offset, size);
#else
/*
* In the 43 path we don't have to care about truncation. just use
* all available memory, also below line 2048. The drm module uses
* pVia->FBFreeStart as offscreen available start. We do it to.
*/
unsigned long offset = pVia->FBFreeStart;
unsigned long size = pVia->FBFreeEnd - offset;
if (size > 0 ) VIAInitPool(pVia, offset, size);
#endif /* X_USE_LINEARFB */
}
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