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 */ 35 struct 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 54 struct aer_err_source { 55 unsigned int status; 56 unsigned int id; 57 }; 58 59 struct 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 }; 76 77 struct aer_broadcast_data { 78 enum pci_channel_state state; 79 enum pci_ers_result result; 80 }; 81 merge_result(enum pci_ers_result orig,enum pci_ers_result new)82static inline pci_ers_result_t merge_result(enum pci_ers_result orig, 83 enum pci_ers_result new) 84 { 85 if (new == PCI_ERS_RESULT_NO_AER_DRIVER) 86 return PCI_ERS_RESULT_NO_AER_DRIVER; 87 88 if (new == PCI_ERS_RESULT_NONE) 89 return orig; 90 91 switch (orig) { 92 case PCI_ERS_RESULT_CAN_RECOVER: 93 case PCI_ERS_RESULT_RECOVERED: 94 orig = new; 95 break; 96 case PCI_ERS_RESULT_DISCONNECT: 97 if (new == PCI_ERS_RESULT_NEED_RESET) 98 orig = PCI_ERS_RESULT_NEED_RESET; 99 break; 100 default: 101 break; 102 } 103 104 return orig; 105 } 106 107 extern struct bus_type pcie_port_bus_type; 108 int aer_init(struct pcie_device *dev); 109 void aer_isr(struct work_struct *work); 110 void aer_print_error(struct pci_dev *dev, struct aer_err_info *info); 111 void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info); 112 irqreturn_t aer_irq(int irq, void *context); 113 114 #ifdef CONFIG_ACPI_APEI 115 int pcie_aer_get_firmware_first(struct pci_dev *pci_dev); 116 #else pcie_aer_get_firmware_first(struct pci_dev * pci_dev)117static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev) 118 { 119 if (pci_dev->__aer_firmware_first_valid) 120 return pci_dev->__aer_firmware_first; 121 return 0; 122 } 123 #endif 124 pcie_aer_force_firmware_first(struct pci_dev * pci_dev,int enable)125static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev, 126 int enable) 127 { 128 pci_dev->__aer_firmware_first = !!enable; 129 pci_dev->__aer_firmware_first_valid = 1; 130 } 131 #endif /* _AERDRV_H_ */ 132