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| author |   Pali Rohár <pali@kernel.org> | 2022-01-10 02:50:11 +0100 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2022-02-08 10:44:20 +0000 |
| commit | 0fc75d87454195885bd1a81fc7e6ce92572b6109 (patch) | |
| tree | a07fbdafb295720a7f502c1ac04c90f66926f016 /include/linux/fortify-string.h | |
| parent | PCI: aardvark: Optimize writing PCI_EXP_RTCTL_PMEIE and PCI_EXP_RTSTA_PME on emulated bridge (diff) | |
| download | wireguard-linux-0fc75d87454195885bd1a81fc7e6ce92572b6109.tar.xz wireguard-linux-0fc75d87454195885bd1a81fc7e6ce92572b6109.zip | |
PCI: aardvark: Add support for PME interrupts
Currently enabling PCI_EXP_RTSTA_PME bit in PCI_EXP_RTCTL register does
nothing. This is because PCIe PME driver expects to receive PCIe interrupt
defined in PCI_EXP_FLAGS_IRQ register, but aardvark hardware does not
trigger PCIe INTx/MSI interrupt for PME event, rather it triggers custom
aardvark interrupt which this driver is not processing yet.
Fix this issue by handling PME interrupt in advk_pcie_handle_int() and
chaining it to PCIe interrupt 0 with generic_handle_domain_irq() (since
aardvark sets PCI_EXP_FLAGS_IRQ to zero). With this change PCIe PME driver
finally starts receiving PME interrupt.
Link: https://lore.kernel.org/r/20220110015018.26359-17-kabel@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'include/linux/fortify-string.h')
0 files changed, 0 insertions, 0 deletions