From: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        tee-dev@lists.linaro.org, Jens Wiklander <jens.wiklander@linaro.org>
Cc: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Subject: [PATCH v1 04/14] tee: shm: add page accessor functions
Date: Thu, 28 Sep 2017 21:04:01 +0300
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From: Volodymyr Babchuk <vlad.babchuk@gmail.com>

In order to register a shared buffer in TEE, we need accessor
function that return list of pages for that buffer.

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
---
 include/linux/tee_drv.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 6ba8b76..d773827 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -394,6 +394,20 @@ static inline size_t tee_shm_get_size(struct tee_shm *shm)
 }
 
 /**
+ * tee_shm_get_pages() - Get list of pages that hold shared buffer
+ * @shm:	Shared memory handle
+ * @num_pages:	Number of pages will be stored there
+ * @returns pointer to pages array
+ */
+static inline struct page **tee_shm_get_pages(struct tee_shm *shm,
+					      size_t *num_pages)
+{
+	if (num_pages)
+		*num_pages = shm->num_pages;
+	return shm->pages;
+}
+
+/**
  * tee_shm_get_page_offset() - Get shared buffer offset from page start
  * @shm:	Shared memory handle
  * @returns page offset of shared buffer
-- 
2.7.4