/*******************************************************************************
**
** gckKERNEL_MapVideoMemory
**
** Get the logical address for a hardware specific memory address for the
** current process.
**
** INPUT:
**
** gckKERNEL Kernel
** Pointer to an gckKERNEL object.
**
** gctBOOL InUserSpace
** gcvTRUE to map the memory into the user space.
**
** gctUINT32 Address
** Hardware specific memory address.
**
** OUTPUT:
**
** gctPOINTER * Logical
** Pointer to a variable that will hold the logical address of the
** specified memory address.
*/
gceSTATUS gckKERNEL_MapVideoMemoryEx(
IN gckKERNEL Kernel,
IN gceCORE Core,
IN gctBOOL InUserSpace,
IN gctUINT32 Address,
OUT gctPOINTER * Logical
)
{
GCHAL * gchal;
gcePOOL pool;
gctUINT32 offset, base;
gceSTATUS status;
gctPOINTER logical;
gcmkHEADER_ARG("Kernel=%p InUserSpace=%d Address=%08x",
Kernel, InUserSpace, Address);
gcmkTRACE_ZONE(gcvLEVEL_VERBOSE, gcvZONE_KERNEL,
"[ENTER] gckKERNEL_MapVideoMemory");
/* Verify the arguments. */
gcmkVERIFY_OBJECT(Kernel, gcvOBJ_KERNEL);
gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
/* Extract the pointer to the GCHAL class. */
gchal = (GCHAL *) Kernel->context;
do
{
#if gcdENABLE_VG
if (Core == gcvCORE_VG)
{
/* Split the memory address into a pool type and offset. */
gcmkERR_BREAK(gckVGHARDWARE_SplitMemory(Kernel->vg->hardware,
Address,
&pool,
&offset));
}
else
#endif
{
/* Split the memory address into a pool type and offset. */
gcmkERR_BREAK(gckHARDWARE_SplitMemory(Kernel->hardware,
Address,
&pool,
&offset));
}
/* Dispatch on pool. */
switch (pool)
{
case gcvPOOL_LOCAL_INTERNAL:
/* Internal memory. */
logical = gchal->GetInternalLogical();
break;
case gcvPOOL_LOCAL_EXTERNAL:
/* External memory. */
logical = gchal->GetExternalLogical();
break;
case gcvPOOL_SYSTEM:
/* System memory. */
#if UNDER_CE >= 600
if (InUserSpace)
{
logical = gchal->GetProcessContiguousLogical();
}
else
{
logical = gchal->GetContiguousLogical();
}
#else
logical = gchal->GetContiguousLogical();
#endif
#if gcdENABLE_VG
if (Core == gcvCORE_VG)
{
gcmkVERIFY_OK(gckVGHARDWARE_SplitMemory(Kernel->vg->hardware,
gchal->GetContiguousHeap()->baseAddress,
&pool,
&base));
}
else
#endif
{
gcmkVERIFY_OK(gckHARDWARE_SplitMemory(Kernel->hardware,
gchal->GetContiguousHeap()->baseAddress,
&pool,
&base));
}
offset -= base;
break;
default:
/* Invalid memory pool. */
gcmkFATAL("Unknown memory pool: %u", pool);
return gcvSTATUS_INVALID_ARGUMENT;
}
/* Build logical address of specified address. */
*Logical = reinterpret_cast<gctPOINTER>
(static_cast<gctUINT8 *>(logical) + offset);
}
while (gcvFALSE);
if (gcmIS_SUCCESS(status))
{
gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_KERNEL,
"gckKERNEL_MapVideoMemory: Address 0x%08X maps to %p",
Address, *Logical);
}
gcmkTRACE_ZONE(gcvLEVEL_VERBOSE, gcvZONE_KERNEL,
"[LEAVE] gckKERNEL_MapVideoMemory(%u)",
status);
/* Return the status. */
gcmkFOOTER();
return status;
}
/*******************************************************************************
**
** gckVGMMU_Construct
**
** Construct a new gckVGMMU object.
**
** INPUT:
**
** gckVGKERNEL Kernel
** Pointer to an gckVGKERNEL object.
**
** gctSIZE_T MmuSize
** Number of bytes for the page table.
**
** OUTPUT:
**
** gckVGMMU * Mmu
** Pointer to a variable that receives the gckVGMMU object pointer.
*/
gceSTATUS gckVGMMU_Construct(
IN gckVGKERNEL Kernel,
IN gctSIZE_T MmuSize,
OUT gckVGMMU * Mmu
)
{
gckOS os;
gckVGHARDWARE hardware;
gceSTATUS status;
gckVGMMU mmu;
gctUINT32 * pageTable;
gctUINT32 i;
gcmkHEADER_ARG("Kernel=0x%x MmuSize=0x%x Mmu=0x%x", Kernel, MmuSize, Mmu);
/* Verify the arguments. */
gcmkVERIFY_OBJECT(Kernel, gcvOBJ_KERNEL);
gcmkVERIFY_ARGUMENT(MmuSize > 0);
gcmkVERIFY_ARGUMENT(Mmu != gcvNULL);
/* Extract the gckOS object pointer. */
os = Kernel->os;
gcmkVERIFY_OBJECT(os, gcvOBJ_OS);
/* Extract the gckVGHARDWARE object pointer. */
hardware = Kernel->hardware;
gcmkVERIFY_OBJECT(hardware, gcvOBJ_HARDWARE);
/* Allocate memory for the gckVGMMU object. */
status = gckOS_Allocate(os, sizeof(struct _gckVGMMU), (gctPOINTER *) &mmu);
if (status < 0)
{
/* Error. */
gcmkFATAL(
"%s(%d): could not allocate gckVGMMU object.",
__FUNCTION__, __LINE__
);
gcmkFOOTER();
return status;
}
/* Initialize the gckVGMMU object. */
mmu->object.type = gcvOBJ_MMU;
mmu->os = os;
mmu->hardware = hardware;
/* Create the mutex. */
status = gckOS_CreateMutex(os, &mmu->mutex);
if (status < 0)
{
/* Roll back. */
mmu->object.type = gcvOBJ_UNKNOWN;
gcmkVERIFY_OK(gckOS_Free(os, mmu));
gcmkFOOTER();
/* Error. */
return status;
}
/* Allocate the page table. */
mmu->pageTableSize = MmuSize;
status = gckOS_AllocateContiguous(os,
gcvFALSE,
&mmu->pageTableSize,
&mmu->pageTablePhysical,
&mmu->pageTableLogical);
if (status < 0)
{
/* Roll back. */
gcmkVERIFY_OK(gckOS_DeleteMutex(os, mmu->mutex));
mmu->object.type = gcvOBJ_UNKNOWN;
gcmkVERIFY_OK(gckOS_Free(os, mmu));
/* Error. */
gcmkFATAL(
"%s(%d): could not allocate page table.",
__FUNCTION__, __LINE__
);
gcmkFOOTER();
return status;
}
/* Compute number of entries in page table. */
mmu->entryCount = mmu->pageTableSize / sizeof(gctUINT32);
mmu->entry = 0;
/* Mark the entire page table as available. */
pageTable = (gctUINT32 *) mmu->pageTableLogical;
for (i = 0; i < mmu->entryCount; i++)
{
pageTable[i] = (gctUINT32)~0;
}
/* Set page table address. */
status = gckVGHARDWARE_SetMMU(hardware, mmu->pageTableLogical);
if (status < 0)
{
/* Free the page table. */
gcmkVERIFY_OK(gckOS_FreeContiguous(mmu->os,
mmu->pageTablePhysical,
mmu->pageTableLogical,
mmu->pageTableSize));
/* Roll back. */
gcmkVERIFY_OK(gckOS_DeleteMutex(os, mmu->mutex));
mmu->object.type = gcvOBJ_UNKNOWN;
gcmkVERIFY_OK(gckOS_Free(os, mmu));
/* Error. */
gcmkFATAL(
"%s(%d): could not program page table.",
__FUNCTION__, __LINE__
);
gcmkFOOTER();
return status;
}
/* Return the gckVGMMU object pointer. */
*Mmu = mmu;
gcmkTRACE_ZONE(
gcvLEVEL_INFO, gcvZONE_MMU,
"%s(%d): %u entries at %p.(0x%08X)\n",
__FUNCTION__, __LINE__,
mmu->entryCount,
mmu->pageTableLogical,
mmu->pageTablePhysical
);
gcmkFOOTER_NO();
/* Success. */
return gcvSTATUS_OK;
}
/*******************************************************************************
**
** gckKERNEL_GetVideoMemoryPool
**
** Get the gckVIDMEM object belonging to the specified pool.
**
** INPUT:
**
** gckKERNEL Kernel
** Pointer to an gckKERNEL object.
**
** gcePOOL Pool
** Pool to query gckVIDMEM object for.
**
** OUTPUT:
**
** gckVIDMEM * VideoMemory
** Pointer to a variable that will hold the pointer to the gckVIDMEM
** object belonging to the requested pool.
*/
gceSTATUS gckKERNEL_GetVideoMemoryPool(
IN gckKERNEL Kernel,
IN gcePOOL Pool,
OUT gckVIDMEM * VideoMemory
)
{
GCHAL * gchal;
gckVIDMEM videoMemory;
gceSTATUS status;
gcmkHEADER_ARG("Kernel=%p Pool=%d", Kernel, Pool);
gcmkTRACE_ZONE(gcvLEVEL_VERBOSE, gcvZONE_KERNEL,
"[ENTER] gckHARDWARE_GetVideoMemoryPool");
/* Verify the arguments. */
gcmkVERIFY_OBJECT(Kernel, gcvOBJ_KERNEL);
gcmkVERIFY_ARGUMENT(VideoMemory != gcvNULL);
/* Extract the pointer to the GCHAL class. */
gchal = (GCHAL *) Kernel->context;
/* Dispatch on pool. */
switch (Pool)
{
case gcvPOOL_LOCAL_INTERNAL:
/* Internal memory. */
videoMemory = gchal->GetInternalHeap();
break;
case gcvPOOL_LOCAL_EXTERNAL:
/* External memory. */
videoMemory = gchal->GetExternalHeap();
break;
case gcvPOOL_SYSTEM:
/* System memory. */
videoMemory = gchal->GetContiguousHeap();
break;
default:
/* Unknown pool. */
videoMemory = gcvNULL;
gcmkFATAL("Unknown memory pool: %u", Pool);
}
/* Return pointer to the gckVIDMEM object. */
*VideoMemory = videoMemory;
/* Determine the status. */
status = (videoMemory == gcvNULL) ? gcvSTATUS_OUT_OF_MEMORY : gcvSTATUS_OK;
if (gcmIS_SUCCESS(status))
{
gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_KERNEL,
"gckHARDWARE_GetVideoMemoryPool: Pool %u starts at %p",
Pool, videoMemory);
}
gcmkTRACE_ZONE(gcvLEVEL_VERBOSE, gcvZONE_KERNEL,
"[LEAVE] gckHARDWARE_GetVideoMemoryPool(%u)",
status);
/* Return the status. */
gcmkFOOTER_ARG("status=%d, *VideoMemory=%p", status, gcmOPT_VALUE(VideoMemory));
return status;
}
