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path: root/drivers/gpu/pvr/mem_debug.c
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Diffstat (limited to 'drivers/gpu/pvr/mem_debug.c')
-rw-r--r--drivers/gpu/pvr/mem_debug.c247
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/gpu/pvr/mem_debug.c b/drivers/gpu/pvr/mem_debug.c
new file mode 100644
index 0000000..b9cc780
--- /dev/null
+++ b/drivers/gpu/pvr/mem_debug.c
@@ -0,0 +1,247 @@
+/**********************************************************************
+ *
+ * Copyright (C) Imagination Technologies Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful but, except
+ * as otherwise stated in writing, without any warranty; without even the
+ * implied warranty of merchantability or fitness for a particular purpose.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * Imagination Technologies Ltd. <gpl-support@imgtec.com>
+ * Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK
+ *
+ ******************************************************************************/
+
+#ifndef MEM_DEBUG_C
+#define MEM_DEBUG_C
+
+#if defined(PVRSRV_DEBUG_OS_MEMORY)
+
+#include "img_types.h"
+#include "services_headers.h"
+
+#if defined (__cplusplus)
+extern "C"
+{
+#endif
+
+#define STOP_ON_ERROR 0
+
+
+
+
+
+
+
+ IMG_BOOL MemCheck(const IMG_PVOID pvAddr, const IMG_UINT8 ui8Pattern, IMG_SIZE_T uSize)
+ {
+ IMG_UINT8 *pui8Addr;
+ for (pui8Addr = (IMG_UINT8*)pvAddr; uSize > 0; uSize--, pui8Addr++)
+ {
+ if (*pui8Addr != ui8Pattern)
+ {
+ return IMG_FALSE;
+ }
+ }
+ return IMG_TRUE;
+ }
+
+
+
+ IMG_VOID OSCheckMemDebug(IMG_PVOID pvCpuVAddr, IMG_SIZE_T uSize, const IMG_CHAR *pszFileName, const IMG_UINT32 uLine)
+ {
+ OSMEM_DEBUG_INFO const *psInfo = (OSMEM_DEBUG_INFO *)((IMG_UINT32)pvCpuVAddr - TEST_BUFFER_PADDING_STATUS);
+
+
+ if (pvCpuVAddr == IMG_NULL)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : null pointer"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+
+ if (((IMG_UINT32)pvCpuVAddr&3) != 0)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : invalid alignment"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+
+ if (!MemCheck((IMG_PVOID)psInfo->sGuardRegionBefore, 0xB1, sizeof(psInfo->sGuardRegionBefore)))
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : guard region before overwritten"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+
+ if (uSize != psInfo->uSize)
+ {
+ PVR_DPF((PVR_DBG_WARNING, "Pointer 0x%X : supplied size was different to stored size (0x%X != 0x%X)"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr, uSize, psInfo->uSize,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+
+ if ((0x01234567 ^ psInfo->uSizeParityCheck) != psInfo->uSize)
+ {
+ PVR_DPF((PVR_DBG_WARNING, "Pointer 0x%X : stored size parity error (0x%X != 0x%X)"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr, psInfo->uSize, 0x01234567 ^ psInfo->uSizeParityCheck,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+ else
+ {
+
+ uSize = psInfo->uSize;
+ }
+
+
+ if (uSize)
+ {
+ if (!MemCheck((IMG_VOID*)((IMG_UINT32)pvCpuVAddr + uSize), 0xB2, TEST_BUFFER_PADDING_AFTER))
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : guard region after overwritten"
+ " - referenced from %s:%d - allocated from %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ }
+ }
+
+
+ if (psInfo->eValid != isAllocated)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : not allocated (freed? %d)"
+ " - referenced %s:%d - freed %s:%d",
+ pvCpuVAddr, psInfo->eValid == isFree,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+ }
+
+ IMG_VOID debug_strcpy(IMG_CHAR *pDest, const IMG_CHAR *pSrc)
+ {
+ IMG_SIZE_T i = 0;
+
+ for (; i < 128; i++)
+ {
+ *pDest = *pSrc;
+ if (*pSrc == '\0') break;
+ pDest++;
+ pSrc++;
+ }
+ }
+
+ PVRSRV_ERROR OSAllocMem_Debug_Wrapper(IMG_UINT32 ui32Flags,
+ IMG_UINT32 ui32Size,
+ IMG_PVOID *ppvCpuVAddr,
+ IMG_HANDLE *phBlockAlloc,
+ IMG_CHAR *pszFilename,
+ IMG_UINT32 ui32Line)
+ {
+ OSMEM_DEBUG_INFO *psInfo;
+
+ PVRSRV_ERROR eError;
+
+ eError = OSAllocMem_Debug_Linux_Memory_Allocations(ui32Flags,
+ ui32Size + TEST_BUFFER_PADDING,
+ ppvCpuVAddr,
+ phBlockAlloc,
+ pszFilename,
+ ui32Line);
+
+ if (eError != PVRSRV_OK)
+ {
+ return eError;
+ }
+
+ OSMemSet((IMG_CHAR *)(*ppvCpuVAddr) + TEST_BUFFER_PADDING_STATUS, 0xBB, ui32Size);
+ OSMemSet((IMG_CHAR *)(*ppvCpuVAddr) + ui32Size + TEST_BUFFER_PADDING_STATUS, 0xB2, TEST_BUFFER_PADDING_AFTER);
+
+
+ psInfo = (OSMEM_DEBUG_INFO *)(*ppvCpuVAddr);
+
+ OSMemSet(psInfo->sGuardRegionBefore, 0xB1, sizeof(psInfo->sGuardRegionBefore));
+ debug_strcpy(psInfo->sFileName, pszFilename);
+ psInfo->uLineNo = ui32Line;
+ psInfo->eValid = isAllocated;
+ psInfo->uSize = ui32Size;
+ psInfo->uSizeParityCheck = 0x01234567 ^ ui32Size;
+
+
+ *ppvCpuVAddr = (IMG_PVOID) ((IMG_UINT32)*ppvCpuVAddr)+TEST_BUFFER_PADDING_STATUS;
+
+#ifdef PVRSRV_LOG_MEMORY_ALLOCS
+
+ PVR_TRACE(("Allocated pointer (after debug info): 0x%X from %s:%d", *ppvCpuVAddr, pszFilename, ui32Line));
+#endif
+
+ return PVRSRV_OK;
+ }
+
+ PVRSRV_ERROR OSFreeMem_Debug_Wrapper(IMG_UINT32 ui32Flags,
+ IMG_UINT32 ui32Size,
+ IMG_PVOID pvCpuVAddr,
+ IMG_HANDLE hBlockAlloc,
+ IMG_CHAR *pszFilename,
+ IMG_UINT32 ui32Line)
+ {
+ OSMEM_DEBUG_INFO *psInfo;
+
+
+ OSCheckMemDebug(pvCpuVAddr, ui32Size, pszFilename, ui32Line);
+
+
+ OSMemSet(pvCpuVAddr, 0xBF, ui32Size + TEST_BUFFER_PADDING_AFTER);
+
+
+ psInfo = (OSMEM_DEBUG_INFO *)((IMG_UINT32) pvCpuVAddr - TEST_BUFFER_PADDING_STATUS);
+
+
+ psInfo->uSize = 0;
+ psInfo->uSizeParityCheck = 0;
+ psInfo->eValid = isFree;
+ psInfo->uLineNo = ui32Line;
+ debug_strcpy(psInfo->sFileName, pszFilename);
+
+ return OSFreeMem_Debug_Linux_Memory_Allocations(ui32Flags, ui32Size + TEST_BUFFER_PADDING, psInfo, hBlockAlloc, pszFilename, ui32Line);
+ }
+
+#if defined (__cplusplus)
+
+}
+#endif
+
+#endif
+
+#endif
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