WorkStruct: Pass the work_struct pointer instead of context data
[linux-3.10.git] / drivers / pci / pcie / aer / aerdrv.h
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/pcieport_if.h>
12 #include <linux/aer.h>
13
14 #define AER_NONFATAL                    0
15 #define AER_FATAL                       1
16 #define AER_CORRECTABLE                 2
17 #define AER_UNCORRECTABLE               4
18 #define AER_ERROR_MASK                  0x001fffff
19 #define AER_ERROR(d)                    (d & AER_ERROR_MASK)
20
21 #define OSC_METHOD_RUN_SUCCESS          0
22 #define OSC_METHOD_NOT_SUPPORTED        1
23 #define OSC_METHOD_RUN_FAILURE          2
24
25 /* Root Error Status Register Bits */
26 #define ROOT_ERR_STATUS_MASKS                   0x0f
27
28 #define SYSTEM_ERROR_INTR_ON_MESG_MASK  (PCI_EXP_RTCTL_SECEE|   \
29                                         PCI_EXP_RTCTL_SENFEE|   \
30                                         PCI_EXP_RTCTL_SEFEE)
31 #define ROOT_PORT_INTR_ON_MESG_MASK     (PCI_ERR_ROOT_CMD_COR_EN|       \
32                                         PCI_ERR_ROOT_CMD_NONFATAL_EN|   \
33                                         PCI_ERR_ROOT_CMD_FATAL_EN)
34 #define ERR_COR_ID(d)                   (d & 0xffff)
35 #define ERR_UNCOR_ID(d)                 (d >> 16)
36
37 #define AER_SUCCESS                     0
38 #define AER_UNSUCCESS                   1
39 #define AER_ERROR_SOURCES_MAX           100
40
41 #define AER_LOG_TLP_MASKS               (PCI_ERR_UNC_POISON_TLP|        \
42                                         PCI_ERR_UNC_ECRC|               \
43                                         PCI_ERR_UNC_UNSUP|              \
44                                         PCI_ERR_UNC_COMP_ABORT|         \
45                                         PCI_ERR_UNC_UNX_COMP|           \
46                                         PCI_ERR_UNC_MALF_TLP)
47
48 /* AER Error Info Flags */
49 #define AER_TLP_HEADER_VALID_FLAG       0x00000001
50 #define AER_MULTI_ERROR_VALID_FLAG      0x00000002
51
52 #define ERR_CORRECTABLE_ERROR_MASK      0x000031c1
53 #define ERR_UNCORRECTABLE_ERROR_MASK    0x001ff010
54
55 struct header_log_regs {
56         unsigned int dw0;
57         unsigned int dw1;
58         unsigned int dw2;
59         unsigned int dw3;
60 };
61
62 struct aer_err_info {
63         int severity;                   /* 0:NONFATAL | 1:FATAL | 2:COR */
64         int flags;
65         unsigned int status;            /* COR/UNCOR Error Status */
66         struct header_log_regs tlp;     /* TLP Header */
67 };
68
69 struct aer_err_source {
70         unsigned int status;
71         unsigned int id;
72 };
73
74 struct aer_rpc {
75         struct pcie_device *rpd;        /* Root Port device */
76         struct work_struct dpc_handler;
77         struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
78         unsigned short prod_idx;        /* Error Producer Index */
79         unsigned short cons_idx;        /* Error Consumer Index */
80         int isr;
81         spinlock_t e_lock;              /*
82                                          * Lock access to Error Status/ID Regs
83                                          * and error producer/consumer index
84                                          */
85         struct mutex rpc_mutex;         /*
86                                          * only one thread could do
87                                          * recovery on the same
88                                          * root port hierachy
89                                          */
90         wait_queue_head_t wait_release;
91 };
92
93 struct aer_broadcast_data {
94         enum pci_channel_state state;
95         enum pci_ers_result result;
96 };
97
98 static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
99                 enum pci_ers_result new)
100 {
101         switch (orig) {
102         case PCI_ERS_RESULT_CAN_RECOVER:
103         case PCI_ERS_RESULT_RECOVERED:
104                 orig = new;
105                 break;
106         case PCI_ERS_RESULT_DISCONNECT:
107                 if (new == PCI_ERS_RESULT_NEED_RESET)
108                         orig = new;
109                 break;
110         default:
111                 break;
112         }
113
114         return orig;
115 }
116
117 extern struct bus_type pcie_port_bus_type;
118 extern void aer_enable_rootport(struct aer_rpc *rpc);
119 extern void aer_delete_rootport(struct aer_rpc *rpc);
120 extern int aer_init(struct pcie_device *dev);
121 extern void aer_isr(struct work_struct *work);
122 extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
123 extern int aer_osc_setup(struct pci_dev *dev);
124
125 #endif //_AERDRV_H_