msm: ocmem: Do not use data mover for clearing ocmem memory
In the non secure environment the data mover is used to clear
the ocmem memory. The ocmem driver no longer uses the data
mover for this operation.
Change-Id: I2dc4f421b1a1a81d3205bd57fe66092512e287aa
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/ocmem_priv.h b/arch/arm/mach-msm/include/mach/ocmem_priv.h
index 32d58d4..00aedb6 100644
--- a/arch/arm/mach-msm/include/mach/ocmem_priv.h
+++ b/arch/arm/mach-msm/include/mach/ocmem_priv.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -226,7 +226,6 @@
int process_dump(int, struct ocmem_handle *, unsigned long);
int ocmem_rdm_transfer(int, struct ocmem_map_list *,
unsigned long, int);
-int ocmem_clear(unsigned long, unsigned long);
unsigned long process_quota(int);
int ocmem_memory_off(int, unsigned long, unsigned long);
int ocmem_memory_on(int, unsigned long, unsigned long);
diff --git a/arch/arm/mach-msm/ocmem_core.c b/arch/arm/mach-msm/ocmem_core.c
index c186a5e..f753391 100644
--- a/arch/arm/mach-msm/ocmem_core.c
+++ b/arch/arm/mach-msm/ocmem_core.c
@@ -51,6 +51,7 @@
static struct ocmem_hw_region *region_ctrl;
static struct mutex region_ctrl_lock;
static void *ocmem_base;
+static void *ocmem_vbase;
#define OCMEM_V1_MACROS 8
#define OCMEM_V1_MACRO_SZ (SZ_64K)
@@ -562,6 +563,13 @@
ocmem_write(0x0, ocmem_base + OC_GFX_MPU_END);
}
+int ocmem_clear(unsigned long start, unsigned long size)
+{
+ memset((ocmem_vbase + start), 0x4D4D434F, size);
+ mb();
+ return 0;
+}
+
static int do_lock(enum ocmem_client id, unsigned long offset,
unsigned long len, enum region_mode mode)
{
@@ -1144,6 +1152,7 @@
pdata = platform_get_drvdata(pdev);
ocmem_base = pdata->reg_base;
+ ocmem_vbase = pdata->vbase;
rc = ocmem_enable_core_clock();
diff --git a/arch/arm/mach-msm/ocmem_rdm.c b/arch/arm/mach-msm/ocmem_rdm.c
index 4ff7212..9eac050 100644
--- a/arch/arm/mach-msm/ocmem_rdm.c
+++ b/arch/arm/mach-msm/ocmem_rdm.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -149,38 +149,6 @@
return IRQ_HANDLED;
}
-#ifdef CONFIG_MSM_OCMEM_NONSECURE
-int ocmem_clear(unsigned long start, unsigned long size)
-{
- INIT_COMPLETION(dm_clear_event);
- /* Clear DM Mask */
- ocmem_write(DM_MASK_RESET, dm_base + DM_INTR_MASK);
- /* Clear DM Interrupts */
- ocmem_write(DM_INTR_RESET, dm_base + DM_INTR_CLR);
- /* DM CLR offset */
- ocmem_write(start, dm_base + DM_CLR_OFFSET);
- /* DM CLR size */
- ocmem_write(size, dm_base + DM_CLR_SIZE);
- /* Wipe out memory as "OCMM" */
- ocmem_write(0x4D4D434F, dm_base + DM_CLR_PATTERN);
- /* The offset, size and pattern for clearing must be set
- * before triggering the clearing engine
- */
- mb();
- /* Trigger Data Clear */
- ocmem_write(DM_CLR_ENABLE, dm_base + DM_CLR_TRIGGER);
-
- wait_for_completion(&dm_clear_event);
-
- return 0;
-}
-#else
-int ocmem_clear(unsigned long start, unsigned long size)
-{
- return 0;
-}
-#endif
-
/* Lock during transfers */
int ocmem_rdm_transfer(int id, struct ocmem_map_list *clist,
unsigned long start, int direction)