linux/include/drm/i915_pxp_tee_interface.h
Vitaly Lubart c72891256a mei: pxp: add command streamer API to the PXP driver
The discrete graphics card with GSC firmware
using command streamer API hence it requires to enhance
pxp module with the new gsc_command() handler.

The handler is implemented via mei_pxp_gsc_command() which is
just a thin wrapper around mei_cldev_send_gsc_command()

Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-6-daniele.ceraolospurio@intel.com
2022-10-03 11:29:11 -07:00

48 lines
1.2 KiB
C

/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef _I915_PXP_TEE_INTERFACE_H_
#define _I915_PXP_TEE_INTERFACE_H_
#include <linux/mutex.h>
#include <linux/device.h>
struct scatterlist;
/**
* struct i915_pxp_component_ops - ops for PXP services.
* @owner: Module providing the ops
* @send: sends data to PXP
* @receive: receives data from PXP
*/
struct i915_pxp_component_ops {
/**
* @owner: owner of the module provding the ops
*/
struct module *owner;
int (*send)(struct device *dev, const void *message, size_t size);
int (*recv)(struct device *dev, void *buffer, size_t size);
ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id,
struct scatterlist *sg_in, size_t total_in_len,
struct scatterlist *sg_out);
};
/**
* struct i915_pxp_component - Used for communication between i915 and TEE
* drivers for the PXP services
* @tee_dev: device that provide the PXP service from TEE Bus.
* @pxp_ops: Ops implemented by TEE driver, used by i915 driver.
*/
struct i915_pxp_component {
struct device *tee_dev;
const struct i915_pxp_component_ops *ops;
/* To protect the above members. */
struct mutex mutex;
};
#endif /* _I915_TEE_PXP_INTERFACE_H_ */