drivers/crypto/ccp/psp-dev.h

   1 /*
   2  * AMD Platform Security Processor (PSP) interface driver
   3  *
   4  * Copyright (C) 2017 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_C2PMSG(_num)                ((_num) << 2)
  34 #define PSP_CMDRESP                     PSP_C2PMSG(32)
  35 #define PSP_CMDBUFF_ADDR_LO             PSP_C2PMSG(56)
  36 #define PSP_CMDBUFF_ADDR_HI             PSP_C2PMSG(57)
  37 #define PSP_FEATURE_REG                 PSP_C2PMSG(63)
  38
  39 #define PSP_P2CMSG(_num)                ((_num) << 2)
  40 #define PSP_CMD_COMPLETE_REG            1
  41 #define PSP_CMD_COMPLETE                PSP_P2CMSG(PSP_CMD_COMPLETE_REG)
  42
  43 #define PSP_P2CMSG_INTEN                0x0110
  44 #define PSP_P2CMSG_INTSTS               0x0114
  45
  46 #define PSP_C2PMSG_ATTR_0               0x0118
  47 #define PSP_C2PMSG_ATTR_1               0x011c
  48 #define PSP_C2PMSG_ATTR_2               0x0120
  49 #define PSP_C2PMSG_ATTR_3               0x0124
  50 #define PSP_P2CMSG_ATTR_0               0x0128
  51
  52 #define PSP_CMDRESP_CMD_SHIFT           16
  53 #define PSP_CMDRESP_IOC                 BIT(0)
  54 #define PSP_CMDRESP_RESP                BIT(31)
  55 #define PSP_CMDRESP_ERR_MASK            0xffff
  56
  57 #define MAX_PSP_NAME_LEN                16
  58
  59 struct sev_misc_dev {
  60         struct kref refcount;
  61         struct miscdevice misc;
  62 };
  63
  64 struct psp_device {
  65         struct list_head entry;
  66
  67         struct psp_vdata *vdata;
  68         char name[MAX_PSP_NAME_LEN];
  69
  70         struct device *dev;
  71         struct sp_device *sp;
  72
  73         void __iomem *io_regs;
  74
  75         int sev_state;
  76         unsigned int sev_int_rcvd;
  77         wait_queue_head_t sev_int_queue;
  78         struct sev_misc_dev *sev_misc;
  79         struct sev_user_data_status status_cmd_buf;
  80         struct sev_data_init init_cmd_buf;
  81 };
  82
  83 #endif /* __PSP_DEV_H */