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
15 #define AER_NONFATAL 0
16 #define AER_FATAL 1
17 #define AER_CORRECTABLE 2
18 #define AER_UNCORRECTABLE 4
19 #define AER_ERROR_MASK 0x001fffff
20 #define AER_ERROR(d) (d & AER_ERROR_MASK)
21
22 /* Root Error Status Register Bits */
23 #define ROOT_ERR_STATUS_MASKS 0x0f
24
25 #define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \
26 PCI_EXP_RTCTL_SENFEE| \
27 PCI_EXP_RTCTL_SEFEE)
28 #define ROOT_PORT_INTR_ON_MESG_MASK (PCI_ERR_ROOT_CMD_COR_EN| \
29 PCI_ERR_ROOT_CMD_NONFATAL_EN| \
30 PCI_ERR_ROOT_CMD_FATAL_EN)
31 #define ERR_COR_ID(d) (d & 0xffff)
32 #define ERR_UNCOR_ID(d) (d >> 16)
33
34 #define AER_SUCCESS 0
35 #define AER_UNSUCCESS 1
36 #define AER_ERROR_SOURCES_MAX 100
37
38 #define AER_LOG_TLP_MASKS (PCI_ERR_UNC_POISON_TLP| \
39 PCI_ERR_UNC_ECRC| \
40 PCI_ERR_UNC_UNSUP| \
41 PCI_ERR_UNC_COMP_ABORT| \
42 PCI_ERR_UNC_UNX_COMP| \
43 PCI_ERR_UNC_MALF_TLP)
44
45 /* AER Error Info Flags */
46 #define AER_TLP_HEADER_VALID_FLAG 0x00000001
47 #define AER_MULTI_ERROR_VALID_FLAG 0x00000002
48
49 #define ERR_CORRECTABLE_ERROR_MASK 0x000031c1
50 #define ERR_UNCORRECTABLE_ERROR_MASK 0x001ff010
51
52 struct header_log_regs {
53 unsigned int dw0;
54 unsigned int dw1;
55 unsigned int dw2;
56 unsigned int dw3;
57 };
58
59 struct aer_err_info {
60 int severity; /* 0:NONFATAL | 1:FATAL | 2:COR */
61 int flags;
62 unsigned int status; /* COR/UNCOR Error Status */
63 struct header_log_regs tlp; /* TLP Header */
64 };
65
66 struct aer_err_source {
67 unsigned int status;
68 unsigned int id;
69 };
70
71 struct aer_rpc {
72 struct pcie_device *rpd; /* Root Port device */
73 struct work_struct dpc_handler;
74 struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
75 unsigned short prod_idx; /* Error Producer Index */
76 unsigned short cons_idx; /* Error Consumer Index */
77 int isr;
78 spinlock_t e_lock; /*
79 * Lock access to Error Status/ID Regs
80 * and error producer/consumer index
81 */
82 struct mutex rpc_mutex; /*
83 * only one thread could do
84 * recovery on the same
85 * root port hierarchy
86 */
87 wait_queue_head_t wait_release;
88 };
89
90 struct aer_broadcast_data {
91 enum pci_channel_state state;
92 enum pci_ers_result result;
93 };
94
95 static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
96 enum pci_ers_result new)
97 {
98 switch (orig) {
99 case PCI_ERS_RESULT_CAN_RECOVER:
100 case PCI_ERS_RESULT_RECOVERED:
101 orig = new;
102 break;
103 case PCI_ERS_RESULT_DISCONNECT:
104 if (new == PCI_ERS_RESULT_NEED_RESET)
105 orig = new;
106 break;
107 default:
108 break;
109 }
110
111 return orig;
112 }
113
114 extern struct bus_type pcie_port_bus_type;
115 extern void aer_enable_rootport(struct aer_rpc *rpc);
116 extern void aer_delete_rootport(struct aer_rpc *rpc);
117 extern int aer_init(struct pcie_device *dev);
118 extern void aer_isr(struct work_struct *work);
119 extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
120
121 #ifdef CONFIG_ACPI
122 extern int aer_osc_setup(struct pcie_device *pciedev);
123 #else
124 static inline int aer_osc_setup(struct pcie_device *pciedev)
125 {
126 return 0;
127 }
128 #endif
129
130 #endif //_AERDRV_H_
131
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