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1    The PCI Express Advanced Error Reporting Driver Guide HOWTO
11 This guide describes the basics of the PCI Express Advanced Error
14 PCI Express AER driver.
18 1.3 What is the PCI Express AER Driver?
20 PCI Express error signaling can occur on the PCI Express link itself
21 or on behalf of transactions initiated on the link. PCI Express
24 required of all PCI Express components providing a minimum defined
26 capability is implemented with a PCI Express advanced error reporting
29 The PCI Express AER driver provides the infrastructure to support PCI
30 Express Advanced Error Reporting capability. The PCI Express AER
37 AER driver only attaches root ports which support PCI-Express AER
43 2.1 Include the PCI Express AER Root Driver into the Linux Kernel
45 The PCI Express AER Root driver is a Root Port service driver attached
46 to the PCI Express Port Bus driver. If a user wants to use it, the driver
51 2.2 Load PCI Express AER Root Driver
56 request for native control of AER. See the PCI FW 3.0 Specification for
58 _OSC support while they use PCI Express. To support such firmwares,
69 When a PCI-E AER error is captured, an error message will be outputted to
93 PCI Express errors are classified into two types: correctable errors
99 interface. The PCI Express protocol can recover without any software
103 can cause a particular transaction or a particular PCI Express link
107 but the PCI Express link itself is fully functional. Fatal errors, on
110 When AER is enabled, a PCI Express device will automatically send an
113 internally processes and logs the error message in its PCI Express
121 Note that the errors as described above are related to the PCI Express
128 AER aware drivers of PCI Express component need change the device
152 3.2.2 PCI error-recovery callbacks
154 The PCI Express AER Root driver uses error callbacks to coordinate
170 the interface. The PCI Express protocol can recover without any
223 Q: What happens if a PCI Express device driver does not provide an
236 Q: How does this infrastructure deal with driver that is not PCI
241 PCI Express, the device might not report its own errors to root
245 with the PCI Express AER Root driver?