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Zhang, Yanmin6c2b3742006-07-31 15:21:33 +08001/*
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
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040011#include <linux/workqueue.h>
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080012#include <linux/pcieport_if.h>
13#include <linux/aer.h>
Huang Ying634deb02009-04-24 10:45:23 +080014#include <linux/interrupt.h>
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080015
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080016#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
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080025#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
Zhang, Yanmin3d5505c2009-06-16 13:35:16 +080034#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080035struct aer_err_info {
Zhang, Yanmin3d5505c2009-06-16 13:35:16 +080036 struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
37 int error_dev_num;
Hidetoshi Seto273024d2009-09-07 17:16:20 +090038
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
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080049 unsigned int status; /* COR/UNCOR Error Status */
Hidetoshi Seto0d90c3a2009-09-07 17:12:25 +090050 unsigned int mask; /* COR/UNCOR Error Mask */
Huang Yingc413d762011-02-21 13:54:43 +080051 struct aer_header_log_regs tlp; /* TLP Header */
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080052};
53
54struct aer_err_source {
55 unsigned int status;
56 unsigned int id;
57};
58
59struct 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
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +010073 * root port hierarchy
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080074 */
75 wait_queue_head_t wait_release;
76};
77
78struct aer_broadcast_data {
79 enum pci_channel_state state;
80 enum pci_ers_result result;
81};
82
83static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
84 enum pci_ers_result new)
85{
Vijay Mohan Pandarathil918b40532012-11-17 11:47:18 +000086 if (new == PCI_ERS_RESULT_NO_AER_DRIVER)
87 return PCI_ERS_RESULT_NO_AER_DRIVER;
88
Zhang, Yanmin029091d2009-04-30 14:48:29 +080089 if (new == PCI_ERS_RESULT_NONE)
90 return orig;
91
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +080092 switch (orig) {
93 case PCI_ERS_RESULT_CAN_RECOVER:
94 case PCI_ERS_RESULT_RECOVERED:
95 orig = new;
96 break;
97 case PCI_ERS_RESULT_DISCONNECT:
98 if (new == PCI_ERS_RESULT_NEED_RESET)
Vijay Mohan Pandarathil918b40532012-11-17 11:47:18 +000099 orig = PCI_ERS_RESULT_NEED_RESET;
Zhang, Yanmin6c2b3742006-07-31 15:21:33 +0800100 break;
101 default:
102 break;
103 }
104
105 return orig;
106}
107
108extern struct bus_type pcie_port_bus_type;
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600109int aer_init(struct pcie_device *dev);
110void aer_isr(struct work_struct *work);
111void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
112void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info);
113irqreturn_t aer_irq(int irq, void *context);
Zhang, Yanmin8d29bfb2007-06-06 11:44:16 +0800114
Huang Yingaffb72c2010-05-18 14:35:16 +0800115#ifdef CONFIG_ACPI_APEI
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600116int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
Huang Yingaffb72c2010-05-18 14:35:16 +0800117#else
118static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
119{
120 if (pci_dev->__aer_firmware_first_valid)
121 return pci_dev->__aer_firmware_first;
122 return 0;
123}
124#endif
125
126static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev,
127 int enable)
128{
129 pci_dev->__aer_firmware_first = !!enable;
130 pci_dev->__aer_firmware_first_valid = 1;
131}
Hidetoshi Setoc9a91882009-09-07 17:07:29 +0900132#endif /* _AERDRV_H_ */