drivers/pci/pcie/aer/aerdrv.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2006 Intel Corp.
   4  *      Tom Long Nguyen (tom.l.nguyen@intel.com)
   5  *      Zhang Yanmin (yanmin.zhang@intel.com)
   6  */
   7
   8 #ifndef _AERDRV_H_
   9 #define _AERDRV_H_
  10
  11 #include <linux/workqueue.h>
  12 #include <linux/aer.h>
  13 #include <linux/interrupt.h>
  14
  15 #include "../portdrv.h"
  16
  17 #define SYSTEM_ERROR_INTR_ON_MESG_MASK  (PCI_EXP_RTCTL_SECEE|   \
  18                                         PCI_EXP_RTCTL_SENFEE|   \
  19                                         PCI_EXP_RTCTL_SEFEE)
  20 #define ROOT_PORT_INTR_ON_MESG_MASK     (PCI_ERR_ROOT_CMD_COR_EN|       \
  21                                         PCI_ERR_ROOT_CMD_NONFATAL_EN|   \
  22                                         PCI_ERR_ROOT_CMD_FATAL_EN)
  23 #define ERR_COR_ID(d)                   (d & 0xffff)
  24 #define ERR_UNCOR_ID(d)                 (d >> 16)
  25
  26 #define AER_ERROR_SOURCES_MAX           100
  27
  28 #define AER_LOG_TLP_MASKS               (PCI_ERR_UNC_POISON_TLP|        \
  29                                         PCI_ERR_UNC_ECRC|               \
  30                                         PCI_ERR_UNC_UNSUP|              \
  31                                         PCI_ERR_UNC_COMP_ABORT|         \
  32                                         PCI_ERR_UNC_UNX_COMP|           \
  33                                         PCI_ERR_UNC_MALF_TLP)
  34
  35 #define AER_MAX_MULTI_ERR_DEVICES       5       /* Not likely to have more */
  36 struct aer_err_info {
  37         struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
  38         int error_dev_num;
  39
  40         unsigned int id:16;
  41
  42         unsigned int severity:2;        /* 0:NONFATAL | 1:FATAL | 2:COR */
  43         unsigned int __pad1:5;
  44         unsigned int multi_error_valid:1;
  45
  46         unsigned int first_error:5;
  47         unsigned int __pad2:2;
  48         unsigned int tlp_header_valid:1;
  49
  50         unsigned int status;            /* COR/UNCOR Error Status */
  51         unsigned int mask;              /* COR/UNCOR Error Mask */
  52         struct aer_header_log_regs tlp; /* TLP Header */
  53 };
  54
  55 struct aer_err_source {
  56         unsigned int status;
  57         unsigned int id;
  58 };
  59
  60 struct aer_rpc {
  61         struct pci_dev *rpd;            /* Root Port device */
  62         struct work_struct dpc_handler;
  63         struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
  64         struct aer_err_info e_info;
  65         unsigned short prod_idx;        /* Error Producer Index */
  66         unsigned short cons_idx;        /* Error Consumer Index */
  67         int isr;
  68         spinlock_t e_lock;              /*
  69                                          * Lock access to Error Status/ID Regs
  70                                          * and error producer/consumer index
  71                                          */
  72         struct mutex rpc_mutex;         /*
  73                                          * only one thread could do
  74                                          * recovery on the same
  75                                          * root port hierarchy
  76                                          */
  77 };
  78
  79 #endif /* _AERDRV_H_ */