| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * AMD Platform Security Processor (PSP) Seamless Firmware (SFS) Support. |
| 4 | * |
| 5 | * Copyright (C) 2025 Advanced Micro Devices, Inc. |
| 6 | * |
| 7 | * Author: Ashish Kalra <ashish.kalra@amd.com> |
| 8 | */ |
| 9 | |
| 10 | #ifndef __SFS_H__ |
| 11 | #define __SFS_H__ |
| 12 | |
| 13 | #include <uapi/linux/psp-sfs.h> |
| 14 | |
| 15 | #include <linux/device.h> |
| 16 | #include <linux/miscdevice.h> |
| 17 | #include <linux/psp-sev.h> |
| 18 | #include <linux/psp-platform-access.h> |
| 19 | #include <linux/set_memory.h> |
| 20 | |
| 21 | #include "psp-dev.h" |
| 22 | |
| 23 | struct sfs_misc_dev { |
| 24 | struct kref refcount; |
| 25 | struct miscdevice misc; |
| 26 | }; |
| 27 | |
| 28 | struct sfs_command { |
| 29 | struct psp_ext_req_buffer_hdr hdr; |
| 30 | u8 buf[PAGE_SIZE - sizeof(struct psp_ext_req_buffer_hdr)]; |
| 31 | u8 sfs_buffer[]; |
| 32 | } __packed; |
| 33 | |
| 34 | struct sfs_device { |
| 35 | struct device *dev; |
| 36 | struct psp_device *psp; |
| 37 | |
| 38 | struct page *page; |
| 39 | struct sfs_command *command_buf; |
| 40 | |
| 41 | struct sfs_misc_dev *misc; |
| 42 | }; |
| 43 | |
| 44 | void sfs_dev_destroy(struct psp_device *psp); |
| 45 | int sfs_dev_init(struct psp_device *psp); |
| 46 | |
| 47 | #endif /* __SFS_H__ */ |
| 48 |