From patchwork Fri Aug 7 10:25:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11705433 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9E614138A for ; Fri, 7 Aug 2020 10:27:00 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 79AF72075D for ; Fri, 7 Aug 2020 10:27:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kwGZ3nhC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 79AF72075D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cPDn4v3Z+XDzwaT586DZC+pg/DdcjYLHAxY2qw6Gb+E=; b=kwGZ3nhCyXJ+YA4ll/S4snPBbl qzePhe4V5KEiI1lHSMYd1ro2LhfzWKhOt2t3EsqQpuuMNf7aQoMfL78/5ZKBJGt73xp53QY35iuve nq6bvyJJWy3he8oPrhp2DASbgEsthC7HtYw7UOW6o9kSv9x9pKzz+yWxdRCcji+aLMUfm1INlm5an 8eTfc/jN/tke/9mo11rSTybJPFkPkhrZilC2jVPvkMlbNDTxlnfH/Aj7t1h9yyw278m9NrKODU9nj cMUz6IlCv7aSxew4KUZqJ86r6GGg26MveCfBGh755o+y7QfmszC7ekh7CgTRzQSxckYXYOeIV1dfw BCh33vtQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3zZB-00032j-VF; Fri, 07 Aug 2020 10:25:38 +0000 Received: from mx.socionext.com ([202.248.49.38]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3zZ5-0002zX-IB for linux-arm-kernel@lists.infradead.org; Fri, 07 Aug 2020 10:25:32 +0000 Received: from unknown (HELO kinkan-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 07 Aug 2020 19:25:30 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by kinkan-ex.css.socionext.com (Postfix) with ESMTP id 8D29A180BB5; Fri, 7 Aug 2020 19:25:30 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 7 Aug 2020 19:25:30 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 2A0681A050B; Fri, 7 Aug 2020 19:25:30 +0900 (JST) From: Kunihiko Hayashi To: Lorenzo Pieralisi , Bjorn Helgaas , Jingoo Han , Gustavo Pimentel , Rob Herring , Masahiro Yamada , Marc Zyngier Subject: [PATCH v6 2/6] PCI: dwc: Add msi_host_isr() callback Date: Fri, 7 Aug 2020 19:25:18 +0900 Message-Id: <1596795922-705-3-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596795922-705-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1596795922-705-1-git-send-email-hayashi.kunihiko@socionext.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200807_062531_800603_873EF66B X-CRM114-Status: GOOD ( 17.02 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Kunihiko Hayashi , Masami Hiramatsu , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Jassi Brar , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.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 Acked-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 9dafecb..7948bf1 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -83,6 +83,9 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) u32 status, num_ctrls; irqreturn_t ret = IRQ_NONE; + 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 f911760..401cbd9 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -170,6 +170,7 @@ struct dw_pcie_host_ops { void (*scan_bus)(struct pcie_port *pp); void (*set_num_vectors)(struct pcie_port *pp); int (*msi_host_init)(struct pcie_port *pp); + void (*msi_host_isr)(struct pcie_port *pp); }; struct pcie_port {