1 /* 2 * AMD Platform Security Processor (PSP) interface driver 3 * 4 * Copyright (C) 2017-2018 Advanced Micro Devices, Inc. 5 * 6 * Author: Brijesh Singh <brijesh.singh@amd.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef __PSP_DEV_H__ 14 #define __PSP_DEV_H__ 15 16 #include <linux/device.h> 17 #include <linux/pci.h> 18 #include <linux/spinlock.h> 19 #include <linux/mutex.h> 20 #include <linux/list.h> 21 #include <linux/wait.h> 22 #include <linux/dmapool.h> 23 #include <linux/hw_random.h> 24 #include <linux/bitops.h> 25 #include <linux/interrupt.h> 26 #include <linux/irqreturn.h> 27 #include <linux/dmaengine.h> 28 #include <linux/psp-sev.h> 29 #include <linux/miscdevice.h> 30 31 #include "sp-dev.h" 32 33 #define PSP_CMD_COMPLETE BIT(1) 34 35 #define PSP_CMDRESP_CMD_SHIFT 16 36 #define PSP_CMDRESP_IOC BIT(0) 37 #define PSP_CMDRESP_RESP BIT(31) 38 #define PSP_CMDRESP_ERR_MASK 0xffff 39 40 #define MAX_PSP_NAME_LEN 16 41 42 struct sev_misc_dev { 43 struct kref refcount; 44 struct miscdevice misc; 45 }; 46 47 struct psp_device { 48 struct list_head entry; 49 50 struct psp_vdata *vdata; 51 char name[MAX_PSP_NAME_LEN]; 52 53 struct device *dev; 54 struct sp_device *sp; 55 56 void __iomem *io_regs; 57 58 int sev_state; 59 unsigned int sev_int_rcvd; 60 wait_queue_head_t sev_int_queue; 61 struct sev_misc_dev *sev_misc; 62 struct sev_user_data_status status_cmd_buf; 63 struct sev_data_init init_cmd_buf; 64 65 u8 api_major; 66 u8 api_minor; 67 u8 build; 68 }; 69 70 #endif /* __PSP_DEV_H */ 71