Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / pci / pcie / aer / aerdrv.h
blob945c939a86c5c2919335d85a95dbeee34f9c0bff
1 /*
2 * Copyright (C) 2006 Intel Corp.
3 * Tom Long Nguyen (tom.l.nguyen@intel.com)
4 * Zhang Yanmin (yanmin.zhang@intel.com)
6 */
8 #ifndef _AERDRV_H_
9 #define _AERDRV_H_
11 #include <linux/workqueue.h>
12 #include <linux/pcieport_if.h>
13 #include <linux/aer.h>
14 #include <linux/interrupt.h>
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)
25 #define AER_ERROR_SOURCES_MAX 100
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)
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;
39 unsigned int id:16;
41 unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */
42 unsigned int __pad1:5;
43 unsigned int multi_error_valid:1;
45 unsigned int first_error:5;
46 unsigned int __pad2:2;
47 unsigned int tlp_header_valid:1;
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 */
54 struct aer_err_source {
55 unsigned int status;
56 unsigned int id;
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
70 struct mutex rpc_mutex; /*
71 * only one thread could do
72 * recovery on the same
73 * root port hierarchy
77 struct aer_broadcast_data {
78 enum pci_channel_state state;
79 enum pci_ers_result result;
82 static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
83 enum pci_ers_result new)
85 if (new == PCI_ERS_RESULT_NO_AER_DRIVER)
86 return PCI_ERS_RESULT_NO_AER_DRIVER;
88 if (new == PCI_ERS_RESULT_NONE)
89 return orig;
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;
104 return orig;
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);
114 #ifdef CONFIG_ACPI_APEI
115 int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
116 #else
117 static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
119 if (pci_dev->__aer_firmware_first_valid)
120 return pci_dev->__aer_firmware_first;
121 return 0;
123 #endif
125 static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev,
126 int enable)
128 pci_dev->__aer_firmware_first = !!enable;
129 pci_dev->__aer_firmware_first_valid = 1;
131 #endif /* _AERDRV_H_ */