6e2e26984f
Allow client to send information to replace a specific field of the cmd buffer with the physical address. This is done via a new IOCTL, TZCOM_IOCTL_SEND_CMD_FD_REQ, which is used to import the ion fd handle. This IOCTL takes in a new send_cmd_fd_op_req structure that has the same format as send-cmd_op_req with a new field added: an array of ion handles (ifd_data.fd) and cmd_buf_offset. The client sends in an array of ion fd handle along with the offset to the command buffer field. This new IOCTL allows a client to send information regarding which field(s) (at cmd_buf_offset) in the cmd_buf to replace. These field(s) are replaced with the physical addr of the buffer addressed by the respective ifd_data.fd handle. Change-Id: If210013d46e24776fe6f5c6aa257505b3b1e6e00 Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
137 lines
4.4 KiB
C
137 lines
4.4 KiB
C
/* Qualcomm TrustZone communicator API */
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#ifndef __TZCOM_H_
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#define __TZCOM_H_
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#define MAX_ION_FD 4
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/**
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* struct tzcom_register_svc_op_req - for register service ioctl request
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* @svc_id - service id (shared between userspace and TZ)
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* @cmd_id_low - low number in cmd_id range (shared between userspace and TZ)
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* @cmd_id_high - high number in cmd_id range (shared between userspace and TZ)
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* @instance_id - unique id for the given service generated by tzcom driver
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*/
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struct tzcom_register_svc_op_req {
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uint32_t svc_id; /* in */
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uint32_t cmd_id_low; /* in */
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uint32_t cmd_id_high; /* in */
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uint32_t instance_id; /* out */
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};
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/**
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* struct tzcom_unregister_svc_op_req - for unregister service ioctl request
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* @svc_id - service id to unregister (provided in register_service request)
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* @instance_id - instance id generated in register service request
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*/
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struct tzcom_unregister_svc_op_req {
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uint32_t svc_id; /* in */
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uint32_t instance_id; /* in */
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};
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/**
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* struct tzcom_next_cmd_op_req - for read next command ioctl request
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* @svc_id - has to be a registered svc_id (see @tzcom_register_svc_op_req)
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* @instance_id - unique id for the given service (see @tzcom_register_svc_op_req)
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* @cmd_id - command to execute on the given service, received from TZ
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* @req_len - request buffer length, received from TZ
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* @req - request buffer, received from TZ
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*/
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struct tzcom_next_cmd_op_req {
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uint32_t svc_id; /* in */
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uint32_t instance_id; /* in */
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uint32_t cmd_id; /* out */
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unsigned int req_len; /* in/out */
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void *req_buf; /* in/out */
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};
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/**
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* struct tzcom_send_cmd_op_req - for send command ioctl request
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* @cmd_id - command to execute on TZBSP side
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* @ifd_data_fd - ion handle to some memory allocated in user space
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* @cmd_buf_offset - command buffer offset
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* @cmd_len - command buffer length
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* @cmd_buf - command buffer
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* @resp_len - response buffer length
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* @resp_buf - response buffer
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*/
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struct tzcom_send_cmd_op_req {
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uint32_t cmd_id; /* in */
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unsigned int cmd_len; /* in */
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void *cmd_buf; /* in */
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unsigned int resp_len; /* in/out */
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void *resp_buf; /* in/out */
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};
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/**
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* struct tzcom_ion_fd_info - ion fd handle data information
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* @fd - ion handle to some memory allocated in user space
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* @cmd_buf_offset - command buffer offset
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*/
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struct tzcom_ion_fd_info {
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int32_t fd;
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uint32_t cmd_buf_offset;
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};
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/**
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* struct tzcom_send_cmd_op_req - for send command ioctl request
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* @cmd_id - command to execute on TZBSP side
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* @ifd_data_fd - ion handle to some memory allocated in user space
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* @cmd_buf_offset - command buffer offset
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* @cmd_len - command buffer length
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* @cmd_buf - command buffer
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* @resp_len - response buffer length
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* @resp_buf - response buffer
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*/
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struct tzcom_send_cmd_fd_op_req {
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uint32_t cmd_id; /* in */
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struct tzcom_ion_fd_info ifd_data[MAX_ION_FD];
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unsigned int cmd_len; /* in */
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void *cmd_buf; /* in */
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unsigned int resp_len; /* in/out */
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void *resp_buf; /* in/out */
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};
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/**
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* struct tzcom_cont_cmd_op_req - for continue command ioctl request. used
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* as a trigger from HLOS service to notify TZCOM that it's done with its
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* operation and provide the response for TZCOM can continue the incomplete
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* command execution
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* @cmd_id - Command to continue filled in by tzcom as tzcom knows about the
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* last incomplete command.
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* @instance_id - Instance id of the svc
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* @resp_len - Length of the response
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* @resp_buf - Response buffer where the response of the cmd should go.
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*/
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struct tzcom_cont_cmd_op_req {
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uint32_t cmd_id; /* out */
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uint32_t instance_id; /* in */
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unsigned int resp_len; /* in */
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void *resp_buf; /* in */
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};
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#define TZCOM_IOC_MAGIC 0x97
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/* For HLOS service */
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#define TZCOM_IOCTL_REGISTER_SERVICE_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 1, struct tzcom_register_svc_op_req)
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/* For HLOS service */
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#define TZCOM_IOCTL_UNREGISTER_SERVICE_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 2, struct tzcom_unregister_svc_op_req)
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/* For TZ service */
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#define TZCOM_IOCTL_SEND_CMD_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 3, struct tzcom_send_cmd_op_req)
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/* For HLOS service */
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#define TZCOM_IOCTL_READ_NEXT_CMD_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 4, struct tzcom_next_cmd_op_req)
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/* For TZ service */
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#define TZCOM_IOCTL_CONTINUE_CMD_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 5, struct tzcom_cont_cmd_op_req)
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#define TZCOM_IOCTL_ABORT_REQ _IO(TZCOM_IOC_MAGIC, 6)
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/* For TZ service */
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#define TZCOM_IOCTL_SEND_CMD_FD_REQ \
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_IOWR(TZCOM_IOC_MAGIC, 7, struct tzcom_send_cmd_fd_op_req)
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#endif /* __TZCOM_H_ */
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