1/* 2 * Copyright (C) 2006 Intel Corp. 3 * Tom Long Nguyen (tom.l.nguyen@intel.com) 4 * Zhang Yanmin (yanmin.zhang@intel.com) 5 * 6 */ 7 8#ifndef _AERDRV_H_ 9#define _AERDRV_H_ 10 11#include <linux/workqueue.h> 12#include <linux/pcieport_if.h> 13#include <linux/aer.h> 14#include <linux/interrupt.h> 15 16#define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \ 17 PCI_EXP_RTCTL_SENFEE| \ 18 PCI_EXP_RTCTL_SEFEE) 19#define ROOT_PORT_INTR_ON_MESG_MASK (PCI_ERR_ROOT_CMD_COR_EN| \ 20 PCI_ERR_ROOT_CMD_NONFATAL_EN| \ 21 PCI_ERR_ROOT_CMD_FATAL_EN) 22#define ERR_COR_ID(d) (d & 0xffff) 23#define ERR_UNCOR_ID(d) (d >> 16) 24 25#define AER_ERROR_SOURCES_MAX 100 26 27#define AER_LOG_TLP_MASKS (PCI_ERR_UNC_POISON_TLP| \ 28 PCI_ERR_UNC_ECRC| \ 29 PCI_ERR_UNC_UNSUP| \ 30 PCI_ERR_UNC_COMP_ABORT| \ 31 PCI_ERR_UNC_UNX_COMP| \ 32 PCI_ERR_UNC_MALF_TLP) 33 34#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */ 35struct aer_err_info { 36 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES]; 37 int error_dev_num; 38 39 unsigned int id:16; 40 41 unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */ 42 unsigned int __pad1:5; 43 unsigned int multi_error_valid:1; 44 45 unsigned int first_error:5; 46 unsigned int __pad2:2; 47 unsigned int tlp_header_valid:1; 48 49 unsigned int status; /* COR/UNCOR Error Status */ 50 unsigned int mask; /* COR/UNCOR Error Mask */ 51 struct aer_header_log_regs tlp; /* TLP Header */ 52}; 53 54struct aer_err_source { 55 unsigned int status; 56 unsigned int id; 57}; 58 59struct aer_rpc { 60 struct pcie_device *rpd; /* Root Port device */ 61 struct work_struct dpc_handler; 62 struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX]; 63 unsigned short prod_idx; /* Error Producer Index */ 64 unsigned short cons_idx; /* Error Consumer Index */ 65 int isr; 66 spinlock_t e_lock; /* 67 * Lock access to Error Status/ID Regs 68 * and error producer/consumer index 69 */ 70 struct mutex rpc_mutex; /* 71 * only one thread could do 72 * recovery on the same 73 * root port hierarchy 74 */ 75 wait_queue_head_t wait_release; 76}; 77 78struct aer_broadcast_data { 79 enum pci_channel_state state; 80 enum pci_ers_result result; 81}; 82 83static inline pci_ers_result_t merge_result(enum pci_ers_result orig, 84 enum pci_ers_result new) 85{ 86 if (new == PCI_ERS_RESULT_NO_AER_DRIVER) 87 return PCI_ERS_RESULT_NO_AER_DRIVER; 88 89 if (new == PCI_ERS_RESULT_NONE) 90 return orig; 91 92 switch (orig) { 93 case PCI_ERS_RESULT_CAN_RECOVER: 94 case PCI_ERS_RESULT_RECOVERED: 95 orig = new; 96 break; 97 case PCI_ERS_RESULT_DISCONNECT: 98 if (new == PCI_ERS_RESULT_NEED_RESET) 99 orig = PCI_ERS_RESULT_NEED_RESET; 100 break; 101 default: 102 break; 103 } 104 105 return orig; 106} 107 108extern struct bus_type pcie_port_bus_type; 109int aer_init(struct pcie_device *dev); 110void aer_isr(struct work_struct *work); 111void aer_print_error(struct pci_dev *dev, struct aer_err_info *info); 112void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info); 113irqreturn_t aer_irq(int irq, void *context); 114 115#ifdef CONFIG_ACPI_APEI 116int pcie_aer_get_firmware_first(struct pci_dev *pci_dev); 117#else 118static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev) 119{ 120 if (pci_dev->__aer_firmware_first_valid) 121 return pci_dev->__aer_firmware_first; 122 return 0; 123} 124#endif 125 126static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev, 127 int enable) 128{ 129 pci_dev->__aer_firmware_first = !!enable; 130 pci_dev->__aer_firmware_first_valid = 1; 131} 132#endif /* _AERDRV_H_ */ 133