2 * Copyright (C) 2006 Intel Corp.
3 * Tom Long Nguyen (tom.l.nguyen@intel.com)
4 * Zhang Yanmin (yanmin.zhang@intel.com)
11 #include <linux/workqueue.h>
12 #include <linux/pcieport_if.h>
13 #include <linux/aer.h>
14 #include <linux/interrupt.h>
16 #define AER_NONFATAL 0
18 #define AER_CORRECTABLE 2
19 #define AER_UNCORRECTABLE 4
20 #define AER_ERROR_MASK 0x001fffff
21 #define AER_ERROR(d) (d & AER_ERROR_MASK)
23 /* Root Error Status Register Bits */
24 #define ROOT_ERR_STATUS_MASKS 0x0f
26 #define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \
27 PCI_EXP_RTCTL_SENFEE| \
29 #define ROOT_PORT_INTR_ON_MESG_MASK (PCI_ERR_ROOT_CMD_COR_EN| \
30 PCI_ERR_ROOT_CMD_NONFATAL_EN| \
31 PCI_ERR_ROOT_CMD_FATAL_EN)
32 #define ERR_COR_ID(d) (d & 0xffff)
33 #define ERR_UNCOR_ID(d) (d >> 16)
36 #define AER_UNSUCCESS 1
37 #define AER_ERROR_SOURCES_MAX 100
39 #define AER_LOG_TLP_MASKS (PCI_ERR_UNC_POISON_TLP| \
42 PCI_ERR_UNC_COMP_ABORT| \
43 PCI_ERR_UNC_UNX_COMP| \
46 /* AER Error Info Flags */
47 #define AER_TLP_HEADER_VALID_FLAG 0x00000001
48 #define AER_MULTI_ERROR_VALID_FLAG 0x00000002
50 #define ERR_CORRECTABLE_ERROR_MASK 0x000031c1
51 #define ERR_UNCORRECTABLE_ERROR_MASK 0x001ff010
53 struct header_log_regs {
60 #define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
62 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
65 int severity; /* 0:NONFATAL | 1:FATAL | 2:COR */
67 unsigned int status; /* COR/UNCOR Error Status */
68 struct header_log_regs tlp; /* TLP Header */
71 struct aer_err_source {
77 struct pcie_device *rpd; /* Root Port device */
78 struct work_struct dpc_handler;
79 struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
80 unsigned short prod_idx; /* Error Producer Index */
81 unsigned short cons_idx; /* Error Consumer Index */
84 * Lock access to Error Status/ID Regs
85 * and error producer/consumer index
87 struct mutex rpc_mutex; /*
88 * only one thread could do
89 * recovery on the same
92 wait_queue_head_t wait_release;
95 struct aer_broadcast_data {
96 enum pci_channel_state state;
97 enum pci_ers_result result;
100 static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
101 enum pci_ers_result new)
103 if (new == PCI_ERS_RESULT_NONE)
107 case PCI_ERS_RESULT_CAN_RECOVER:
108 case PCI_ERS_RESULT_RECOVERED:
111 case PCI_ERS_RESULT_DISCONNECT:
112 if (new == PCI_ERS_RESULT_NEED_RESET)
122 extern struct bus_type pcie_port_bus_type;
123 extern void aer_enable_rootport(struct aer_rpc *rpc);
124 extern void aer_delete_rootport(struct aer_rpc *rpc);
125 extern int aer_init(struct pcie_device *dev);
126 extern void aer_isr(struct work_struct *work);
127 extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
128 extern irqreturn_t aer_irq(int irq, void *context);
131 extern int aer_osc_setup(struct pcie_device *pciedev);
133 static inline int aer_osc_setup(struct pcie_device *pciedev)