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Commit 1ccf36b9 authored by Azam Sadiq Pasha Kapatrala Syed's avatar Azam Sadiq Pasha Kapatrala Syed
Browse files

msm: camera: Enable secure camera feature 



Change to populate sids for each hw core and map the sids
either to secure mode or non-secure mode based on the usecase.

Change-Id: Icb48ac2624d489ff054dca3158f52c45cc85cce7
Signed-off-by: default avatarAzam Sadiq Pasha Kapatrala Syed <akapatra@codeaurora.org>
parent 85d7e134

drivers/media/platform/msm/camera_v2/common/cam_smmu_api.c

+715 −7

File changed.

Preview size limit exceeded, changes collapsed.

drivers/media/platform/msm/camera_v2/common/cam_smmu_api.h

+59 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ 
#include <linux/random.h>

#include <linux/spinlock_types.h>

#include <linux/mutex.h>

#include <linux/msm_ion.h>





/*

 * Enum for possible CAM SMMU operations
@@ -31,6 +33,10 @@ 
enum cam_smmu_ops_param {

	CAM_SMMU_ATTACH,

	CAM_SMMU_DETACH,

	CAM_SMMU_ATTACH_SEC_VFE_NS_STATS,

	CAM_SMMU_DETACH_SEC_VFE_NS_STATS,

	CAM_SMMU_ATTACH_SEC_CPP,

	CAM_SMMU_DETACH_SEC_CPP,

	CAM_SMMU_VOTE,

	CAM_SMMU_DEVOTE,

	CAM_SMMU_OPS_INVALID
@@ -86,6 +92,59 @@ int cam_smmu_get_phy_addr(int handle, 
 */

int cam_smmu_put_phy_addr(int handle, int ion_fd);



/**

 * @param handle: Client has to pass back the smmu handle provided.

 * @param ion_fd: ION handle identifying the memory buffer.

 * @dir         : Mapping direction: which will traslate toDMA_BIDIRECTIONAL,

 *                DMA_TO_DEVICE or DMA_FROM_DEVICE

 * @client   : Client has to pass the ion_client pointer created by the client.

 * @phys_addr   : Pointer to physical address where mapped address will be

 *                returned.

 * @len         : Length of buffer mapped returned by CAM SMMU driver.

 * @return Status of operation. Negative in case of error. Zero otherwise.

 */

int cam_smmu_get_stage2_phy_addr(int handle,

			int ion_fd, enum cam_smmu_map_dir dir,

			struct ion_client *client, ion_phys_addr_t *addr,

			size_t *len_ptr);



/**

 * @param handle: Handle to identify the CAMSMMU client (VFE, CPP, FD etc.)

 * @param ion_fd: ION handle identifying the memory buffer.

 *

 * @return Status of operation. Negative in case of error. Zero otherwise.

 */

int cam_smmu_put_stage2_phy_addr(int handle, int ion_fd);



/**

 * @param handle: Client has to pass back the smmu handle provided.

 * @dir         : Mapping direction: which will traslate toDMA_BIDIRECTIONAL,

 *                DMA_TO_DEVICE or DMA_FROM_DEVICE, client has to pass.

 * @client   : Client has to pass the ion_client pointer created by the client.

 * @ion_handle  : handle to the buffer returned by CAM SMMU driver.

 * @phys_addr   : Pointer to physical address where mapped address will be

 *                returned.

 * @len         : Length of buffer mapped returned by CAM SMMU driver.

 * @return Status of operation. Negative in case of error. Zero otherwise.

 */

int cam_smmu_alloc_get_stage2_scratch_mem(int handle,

		enum cam_smmu_map_dir dir, struct ion_client *client,

		struct ion_handle **sc_handle, ion_phys_addr_t *addr,

		size_t *len_ptr);





/**

 * @param handle: Client has to pass back the smmu handle provided.

 * @client   : Client has to pass the ion_client pointer provided by SMMU

 *                driver.

 * @ion_handle  : Client has to pass the ion_handle provided by SMMU

 *                driver.

 * @return Status of operation. Negative in case of error. Zero otherwise.

 */



int cam_smmu_free_stage2_scratch_mem(int handle,

	struct ion_client *client, struct ion_handle *sc_handle);



/**

 * @brief	   : Allocates a scratch buffer

 *