trusty: add couple non-secure memory related helper routines

trusty_encode_page_info - encodes page physical address, memory
type and other attributes into architecture specific structure
that can be parsed by secure side.

trusty_call32_mem_buf - can be used by drivers to make
specified smc call with physicaly contigues memory buffer as
an argument. Memory buffer info in retrieved by trusty_encode_page_info
and along with buffer size is encoded into series of 32-bit
smc call parameters.

Change-Id: Iae155c0eff0bb6269be1abbe53ee42f27a1c23f5
Signed-off-by: Michael Ryleev <gmar@google.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/trusty/trusty.h b/include/linux/trusty/trusty.h
index abb77f1db..d084d9d68 100644
--- a/include/linux/trusty/trusty.h
+++ b/include/linux/trusty/trusty.h
@@ -16,6 +16,9 @@
 
 #include <linux/kernel.h>
 #include <linux/trusty/sm_err.h>
+#include <linux/device.h>
+#include <linux/pagemap.h>
+
 
 #ifdef CONFIG_TRUSTY
 s32 trusty_std_call32(struct device *dev, u32 smcnr, u32 a0, u32 a1, u32 a2);
@@ -53,4 +56,16 @@ int trusty_call_notifier_register(struct device *dev,
 int trusty_call_notifier_unregister(struct device *dev,
                                     struct notifier_block *n);
 const char *trusty_version_str_get(struct device *dev);
+
+struct ns_mem_page_info {
+        uint64_t attr;
+};
+
+int trusty_encode_page_info(struct ns_mem_page_info *inf,
+                            struct page *page, pgprot_t pgprot);
+
+int trusty_call32_mem_buf(struct device *dev, u32 smcnr,
+                          struct page *page,  u32 size,
+                          pgprot_t pgprot);
+
 #endif