Re: [PATCH v7 3/3] PCI: uniphier: Add misc interrupt handler to invoke PME and AER

On Fri, 11 Sep 2020 18:33:34 +0900, Kunihiko Hayashi wrote:

This patch adds misc interrupt handler to detect and invoke PME/AER event.

In UniPhier PCIe controller, PME/AER signals are assigned to the same
signal as MSI by the internal logic. These signals should be detected by
the internal register, however, DWC MSI handler can't handle these signals.

DWC MSI handler calls .msi_host_isr() callback function, that detects
PME/AER signals with the internal register and invokes the interrupt
with PME/AER vIRQ numbers.

These vIRQ numbers is obtained from portdrv in uniphier_add_pcie_port()
function.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <redacted>
Cc: Lorenzo Pieralisi <redacted>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 drivers/pci/controller/dwc/pcie-uniphier.c | 77 +++++++++++++++++++++++++-----
 1 file changed, 66 insertions(+), 11 deletions(-)

Reviewed-by: Rob Herring <robh@kernel.org>

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel