drivers/crypto/ccp/dbc.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * AMD Platform Security Processor (PSP) Dynamic Boost Control support
   4  *
   5  * Copyright (C) 2023 Advanced Micro Devices, Inc.
   6  *
   7  * Author: Mario Limonciello <mario.limonciello@amd.com>
   8  */
   9
  10 #ifndef __DBC_H__
  11 #define __DBC_H__
  12
  13 #include <uapi/linux/psp-dbc.h>
  14
  15 #include <linux/device.h>
  16 #include <linux/miscdevice.h>
  17 #include <linux/psp-platform-access.h>
  18
  19 #include "psp-dev.h"
  20
  21 struct psp_dbc_device {
  22         struct device *dev;
  23         struct psp_device *psp;
  24
  25         union dbc_buffer *mbox;
  26
  27         struct mutex ioctl_mutex;
  28
  29         struct miscdevice char_dev;
  30
  31         /* used to abstract communication path */
  32         bool    use_ext;
  33         u32     header_size;
  34         u32     *payload_size;
  35         u32     *result;
  36         void    *payload;
  37 };
  38
  39 union dbc_buffer {
  40         struct psp_request              pa_req;
  41         struct psp_ext_request          ext_req;
  42 };
  43
  44 void dbc_dev_destroy(struct psp_device *psp);
  45 int dbc_dev_init(struct psp_device *psp);
  46
  47 #endif /* __DBC_H */