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Received: from mx.socionext.com ([202.248.49.38]) by bombadil.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lZclL-00Ds2s-5u for linux-arm-kernel@lists.infradead.org; Thu, 22 Apr 2021 17:05:12 +0000 Received: from unknown (HELO kinkan2-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 23 Apr 2021 02:05:10 +0900 Received: from mail.mfilter.local (m-filter-2 [10.213.24.62]) by kinkan2-ex.css.socionext.com (Postfix) with ESMTP id 83A632059027; Fri, 23 Apr 2021 02:05:10 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 23 Apr 2021 02:05:10 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan2.css.socionext.com (Postfix) with ESMTP id F411DB1D40; Fri, 23 Apr 2021 02:05:09 +0900 (JST) From: Kunihiko Hayashi To: Bjorn Helgaas , Rob Herring , Lorenzo Pieralisi , Jingoo Han , Gustavo Pimentel , Marc Zyngier Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jassi Brar , Masami Hiramatsu , Kunihiko Hayashi Subject: [PATCH v11 2/3] PCI: dwc: Add msi_host_isr() callback Date: Fri, 23 Apr 2021 02:04:56 +0900 Message-Id: <1619111097-10232-3-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1619111097-10232-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1619111097-10232-1-git-send-email-hayashi.kunihiko@socionext.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210422_100511_341410_46A5A673 X-CRM114-Status: GOOD ( 15.07 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This adds msi_host_isr() callback function support to describe SoC-dependent service triggered by MSI. For example, when AER interrupt is triggered by MSI, the callback function reads SoC-dependent registers and detects that the interrupt is from AER, and invoke AER interrupts related to MSI. Cc: Marc Zyngier Cc: Jingoo Han Cc: Gustavo Pimentel Signed-off-by: Kunihiko Hayashi Acked-by: Gustavo Pimentel Reviewed-by: Rob Herring --- drivers/pci/controller/dwc/pcie-designware-host.c | 3 +++ drivers/pci/controller/dwc/pcie-designware.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 24192b4..2e5ad68 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -61,6 +61,9 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) irqreturn_t ret = IRQ_NONE; struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + if (pp->ops->msi_host_isr) + pp->ops->msi_host_isr(pp); + num_ctrls = pp->num_vectors / MAX_MSI_IRQS_PER_CTRL; for (i = 0; i < num_ctrls; i++) { diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 7d6e9b75..c90960f 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -175,6 +175,7 @@ enum dw_pcie_device_mode { struct dw_pcie_host_ops { int (*host_init)(struct pcie_port *pp); int (*msi_host_init)(struct pcie_port *pp); + void (*msi_host_isr)(struct pcie_port *pp); }; struct pcie_port {