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| 2 | |
| 3 | * Copyright © 2020 Intel Corporation
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| 4 |
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| 5 |
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| 6 | #ifndef _I915_PXP_TEE_INTERFACE_H_
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| 7 | #define _I915_PXP_TEE_INTERFACE_H_
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| 8 |
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| 9 | #include <linux/mutex.h>
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| 10 | #include <linux/device.h>
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| 11 | struct scatterlist;
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| 12 |
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| 13 | |
| 14 | * struct i915_pxp_component_ops - ops for PXP services.
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| 15 |
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| 16 | struct i915_pxp_component_ops {
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| 17 | |
| 18 | * @owner: Module providing the ops.
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| 19 |
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| 20 | struct module *owner;
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| 21 |
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| 22 | |
| 23 | * @send: Send a PXP message.
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| 24 |
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| 25 | int (*send)(struct device *dev, const void *message, size_t size,
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| 26 | unsigned long timeout_ms);
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| 27 | |
| 28 | * @recv: Receive a PXP message.
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| 29 |
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| 30 | int (*recv)(struct device *dev, void *buffer, size_t size,
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| 31 | unsigned long timeout_ms);
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| 32 | |
| 33 | * @gsc_command: Send a GSC command.
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| 34 |
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| 35 | ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id,
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| 36 | struct scatterlist *sg_in, size_t total_in_len,
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| 37 | struct scatterlist *sg_out);
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| 38 |
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| 39 | };
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| 40 |
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| 41 | |
| 42 | * struct i915_pxp_component - Used for communication between i915 and TEE
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| 43 | * drivers for the PXP services
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| 44 |
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| 45 | struct i915_pxp_component {
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| 46 | |
| 47 | * @tee_dev: device that provide the PXP service from TEE Bus.
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| 48 |
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| 49 | struct device *tee_dev;
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| 50 |
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| 51 | |
| 52 | * @ops: Ops implemented by TEE driver, used by i915 driver.
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| 53 |
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| 54 | const struct i915_pxp_component_ops *ops;
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| 55 |
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| 56 | |
| 57 | * @mutex: To protect the above members.
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| 58 |
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| 59 | struct mutex mutex;
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| 60 | };
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| 61 |
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| 62 | #endif
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