1288f1068SDaniele Ceraolo Spurio /* SPDX-License-Identifier: MIT */ 2288f1068SDaniele Ceraolo Spurio /* 3288f1068SDaniele Ceraolo Spurio * Copyright © 2020 Intel Corporation 4288f1068SDaniele Ceraolo Spurio */ 5288f1068SDaniele Ceraolo Spurio 6288f1068SDaniele Ceraolo Spurio #ifndef _I915_PXP_TEE_INTERFACE_H_ 7288f1068SDaniele Ceraolo Spurio #define _I915_PXP_TEE_INTERFACE_H_ 8288f1068SDaniele Ceraolo Spurio 9288f1068SDaniele Ceraolo Spurio #include <linux/mutex.h> 10288f1068SDaniele Ceraolo Spurio #include <linux/device.h> 11*c7289125SVitaly Lubart struct scatterlist; 12288f1068SDaniele Ceraolo Spurio 13288f1068SDaniele Ceraolo Spurio /** 14288f1068SDaniele Ceraolo Spurio * struct i915_pxp_component_ops - ops for PXP services. 15288f1068SDaniele Ceraolo Spurio * @owner: Module providing the ops 16288f1068SDaniele Ceraolo Spurio * @send: sends data to PXP 17288f1068SDaniele Ceraolo Spurio * @receive: receives data from PXP 18288f1068SDaniele Ceraolo Spurio */ 19288f1068SDaniele Ceraolo Spurio struct i915_pxp_component_ops { 20288f1068SDaniele Ceraolo Spurio /** 21288f1068SDaniele Ceraolo Spurio * @owner: owner of the module provding the ops 22288f1068SDaniele Ceraolo Spurio */ 23288f1068SDaniele Ceraolo Spurio struct module *owner; 24288f1068SDaniele Ceraolo Spurio 25288f1068SDaniele Ceraolo Spurio int (*send)(struct device *dev, const void *message, size_t size); 26288f1068SDaniele Ceraolo Spurio int (*recv)(struct device *dev, void *buffer, size_t size); 27*c7289125SVitaly Lubart ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id, 28*c7289125SVitaly Lubart struct scatterlist *sg_in, size_t total_in_len, 29*c7289125SVitaly Lubart struct scatterlist *sg_out); 30*c7289125SVitaly Lubart 31288f1068SDaniele Ceraolo Spurio }; 32288f1068SDaniele Ceraolo Spurio 33288f1068SDaniele Ceraolo Spurio /** 34288f1068SDaniele Ceraolo Spurio * struct i915_pxp_component - Used for communication between i915 and TEE 35288f1068SDaniele Ceraolo Spurio * drivers for the PXP services 36288f1068SDaniele Ceraolo Spurio * @tee_dev: device that provide the PXP service from TEE Bus. 37288f1068SDaniele Ceraolo Spurio * @pxp_ops: Ops implemented by TEE driver, used by i915 driver. 38288f1068SDaniele Ceraolo Spurio */ 39288f1068SDaniele Ceraolo Spurio struct i915_pxp_component { 40288f1068SDaniele Ceraolo Spurio struct device *tee_dev; 41288f1068SDaniele Ceraolo Spurio const struct i915_pxp_component_ops *ops; 42288f1068SDaniele Ceraolo Spurio 43288f1068SDaniele Ceraolo Spurio /* To protect the above members. */ 44288f1068SDaniele Ceraolo Spurio struct mutex mutex; 45288f1068SDaniele Ceraolo Spurio }; 46288f1068SDaniele Ceraolo Spurio 47288f1068SDaniele Ceraolo Spurio #endif /* _I915_TEE_PXP_INTERFACE_H_ */ 48