drivers/firmware/efi/cper_cxl.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * UEFI Common Platform Error Record (CPER) support for CXL Section.
   4  *
   5  * Copyright (C) 2022 Advanced Micro Devices, Inc.
   6  *
   7  * Author: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
   8  */
   9
  10 #ifndef LINUX_CPER_CXL_H
  11 #define LINUX_CPER_CXL_H
  12
  13 /* CXL Protocol Error Section */
  14 #define CPER_SEC_CXL_PROT_ERR                                           \
  15         GUID_INIT(0x80B9EFB4, 0x52B5, 0x4DE3, 0xA7, 0x77, 0x68, 0x78,   \
  16                   0x4B, 0x77, 0x10, 0x48)
  17
  18 #pragma pack(1)
  19
  20 /* Compute Express Link Protocol Error Section, UEFI v2.10 sec N.2.13 */
  21 struct cper_sec_prot_err {
  22         u64 valid_bits;
  23         u8 agent_type;
  24         u8 reserved[7];
  25
  26         /*
  27          * Except for RCH Downstream Port, all the remaining CXL Agent
  28          * types are uniquely identified by the PCIe compatible SBDF number.
  29          */
  30         union {
  31                 u64 rcrb_base_addr;
  32                 struct {
  33                         u8 function;
  34                         u8 device;
  35                         u8 bus;
  36                         u16 segment;
  37                         u8 reserved_1[3];
  38                 };
  39         } agent_addr;
  40
  41         struct {
  42                 u16 vendor_id;
  43                 u16 device_id;
  44                 u16 subsystem_vendor_id;
  45                 u16 subsystem_id;
  46                 u8 class_code[2];
  47                 u16 slot;
  48                 u8 reserved_1[4];
  49         } device_id;
  50
  51         struct {
  52                 u32 lower_dw;
  53                 u32 upper_dw;
  54         } dev_serial_num;
  55
  56         u8 capability[60];
  57         u16 dvsec_len;
  58         u16 err_len;
  59         u8 reserved_2[4];
  60 };
  61
  62 #pragma pack()
  63
  64 void cper_print_prot_err(const char *pfx, const struct cper_sec_prot_err *prot_err);
  65
  66 #endif //__CPER_CXL_