android_kernel_xiaomi_sm8350/drivers/pci/pcie/Kconfig
Zhang, Yanmin 6c2b374d74 PCI-Express AER implemetation: AER core and aerdriver
Patch 3 implements the core part of PCI-Express AER and aerdrv
port service driver.

When a root port service device is probed, the aerdrv will call
request_irq to register irq handler for AER error interrupt.

When a device sends an PCI-Express error message to the root port,
the root port will trigger an interrupt, by either MSI or IO-APIC,
then kernel would run the irq handler. The handler collects root
error status register and schedules a work. The work will call
the core part to process the error based on its type
(Correctable/non-fatal/fatal).

As for Correctable errors, the patch chooses to just clear the correctable
error status register of the device.

As for the non-fatal error, the patch follows generic PCI error handler
rules to call the error callback functions of the endpoint's driver. If
the device is a bridge, the patch chooses to broadcast the error to
downstream devices.

As for the fatal error, the patch resets the pci-express link and
follows generic PCI error handler rules to call the error callback
functions of the endpoint's driver. If the device is a bridge, the patch
chooses to broadcast the error to downstream devices.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 17:43:53 -07:00

38 lines
1.0 KiB
Plaintext

#
# PCI Express Port Bus Configuration
#
config PCIEPORTBUS
bool "PCI Express support"
depends on PCI
help
This automatically enables PCI Express Port Bus support. Users can
choose Native Hot-Plug support, Advanced Error Reporting support,
Power Management Event support and Virtual Channel support to run
on PCI Express Ports (Root or Switch).
#
# Include service Kconfig here
#
config HOTPLUG_PCI_PCIE
tristate "PCI Express Hotplug driver"
depends on HOTPLUG_PCI && PCIEPORTBUS
help
Say Y here if you have a motherboard that supports PCI Express Native
Hotplug
To compile this driver as a module, choose M here: the
module will be called pciehp.
When in doubt, say N.
config HOTPLUG_PCI_PCIE_POLL_EVENT_MODE
bool "Use polling mechanism for hot-plug events (for testing purpose)"
depends on HOTPLUG_PCI_PCIE
help
Say Y here if you want to use the polling mechanism for hot-plug
events for early platform testing.
When in doubt, say N.
source "drivers/pci/pcie/aer/Kconfig"