ENGR00294354 gpu:Using vitural memory cause AXI bus error

There are two possible reasons to cause AXI bus error
1.Allocate Tile status buffer from virtual memory. It seems gc2000
and gc880 doesn't support tile status buffer from virtual memory.
2.Stream buffer using very beginning gpu mmu address. In this condition,
a faked non gpu mmu address maybe generated and fill into gpu which cause
AXI bus error.

[DATE]09-01-2014
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Shawn Guo

2 files changed, 10 insertions, 0 deletions

diff --git a/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal.h b/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal.h
index 7312cc24d598..63d5dad3a75a 100644
--- a/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal.h
+++ b/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal.h
@@ -2562,6 +2562,15 @@ gckMMU_AllocatePages(
     OUT gctUINT32 * Address
     );
 
+gceSTATUS
+gckMMU_AllocatePagesEx(
+    IN gckMMU Mmu,
+    IN gctSIZE_T PageCount,
+    IN gceSURF_TYPE Type,
+    OUT gctPOINTER * PageTable,
+    OUT gctUINT32 * Address
+    );
+
 /* Remove a page table from the MMU. */
 gceSTATUS
 gckMMU_FreePages(
diff --git a/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_enum.h b/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_enum.h
index b2ffac335e22..522253779182 100644
--- a/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_enum.h
+++ b/drivers/mxc/gpu-viv/hal/kernel/inc/gc_hal_enum.h
@@ -166,6 +166,7 @@ typedef enum _gceFEATURE
 	gcvFEATURE_LINEAR_RENDER_TARGET,
     gcvFEATURE_BUG_FIXES8,
     gcvFEATURE_HALTI2,
+    gcvFEATURE_MMU,
 }
 gceFEATURE;