From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-sn1nam01on0055.outbound.protection.outlook.com ([104.47.32.55]:19140 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727539AbeHJSPs (ORCPT ); Fri, 10 Aug 2018 14:15:48 -0400 From: Bharat Kumar Gogada To: , CC: , , Bharat Kumar Gogada Subject: [PATCH 3/4] PCI/portdrv: Check platform supported service IRQ's Date: Fri, 10 Aug 2018 21:09:39 +0530 Message-ID: <1533915580-31805-4-git-send-email-bharat.kumar.gogada@xilinx.com> In-Reply-To: <1533915580-31805-1-git-send-email-bharat.kumar.gogada@xilinx.com> References: <1533915580-31805-1-git-send-email-bharat.kumar.gogada@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-pci-owner@vger.kernel.org List-ID: Platforms may have dedicated IRQ lines for PCIe services like AER/PME etc., check for such IRQ lines. Check mask and fill legacy irq line for services other than platform supported service IRQ number. Signed-off-by: Bharat Kumar Gogada --- drivers/pci/pcie/portdrv_core.c | 19 +++++++++++++++++-- 1 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index e0261ad..a7d024c 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -166,6 +166,19 @@ static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask) irqs[i] = -1; /* + * Some platforms have dedicated interrupt line from root complex to + * interrupt controller for PCIe services like AER/PME etc., check + * if platform registered with any such IRQ. + */ + if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) { + int plat_mask; + + plat_mask = pci_check_platform_service_irqs(dev, irqs, mask); + if (plat_mask > 0) + mask = mask & plat_mask; + } + + /* * If we support PME but can't use MSI/MSI-X for it, we have to * fall back to INTx or other interrupts, e.g., a system shared * interrupt. @@ -183,8 +196,10 @@ static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask) if (ret < 0) return -ENODEV; - for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) - irqs[i] = pci_irq_vector(dev, 0); + for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) { + if (mask & (1 << i)) + irqs[i] = pci_irq_vector(dev, 0); + } return 0; } -- 1.7.1