From patchwork Fri May 15 04:48:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11550475 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 13A91912 for ; Fri, 15 May 2020 04:48:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B4B512065F for ; Fri, 15 May 2020 04:48:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RZEVQzTT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4B512065F 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=bombadil.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=E0PRTvSkwSHPvmjQLsSbZBFU7YoiLbb+ik2BxTVCGlQ=; b=RZEVQzTT7NmT5i68OC+G9fg2ck S4QnWXmuo4pxUAlB+2+UyjXb1ocKGM+Hb7s5G7AKPv3fKr6VFQ56C9J16VGxSt1CYxjTfPlwjCvFl MUHqvToq3Y3reZJHFxNwJeJjH8Vbi1EKi1xHzROrvGYpEg2KyMTsgbC5rxj3vv/U6POSwrK6Ol9rG NTD88uIA6b2f2/8SJcLeF6RWi2oy0+XQch0CYI8zE8jKswmvR62twhmP0E7kAa7bTRpB6u4AGS42g QK0XTahWRoHBDvXwe/PMUDOshpDChD//LXc1i3namM5T2iozBhehtFvMcH0kjKFIXc2Ni/xKg/Bic 5M6Vyhzw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZSH7-00005H-Ow; Fri, 15 May 2020 04:48:45 +0000 Received: from mx.socionext.com ([202.248.49.38]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZSGx-0008Mo-K7 for linux-arm-kernel@lists.infradead.org; Fri, 15 May 2020 04:48:37 +0000 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 15 May 2020 13:48:34 +0900 Received: from mail.mfilter.local (m-filter-2 [10.213.24.62]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id 52C7460057; Fri, 15 May 2020 13:48:34 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 15 May 2020 13:48:34 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id B49981A0E67; Fri, 15 May 2020 13:48:33 +0900 (JST) From: Kunihiko Hayashi To: Bjorn Helgaas , Lorenzo Pieralisi , Jingoo Han , Gustavo Pimentel , Rob Herring , Masahiro Yamada Subject: [PATCH 1/5] PCI: dwc: Add msi_host_isr() callback Date: Fri, 15 May 2020 13:48:21 +0900 Message-Id: <1589518105-18368-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1589518105-18368-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1589518105-18368-1-git-send-email-hayashi.kunihiko@socionext.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200514_214835_783190_15EADE6E X-CRM114-Status: GOOD ( 14.19 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.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. Signed-off-by: Kunihiko Hayashi --- drivers/pci/controller/dwc/pcie-designware-host.c | 8 ++++---- drivers/pci/controller/dwc/pcie-designware.h | 1 + 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 0f36a92..491b7a8 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -110,13 +110,13 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) static void dw_chained_msi_isr(struct irq_desc *desc) { struct irq_chip *chip = irq_desc_get_chip(desc); - struct pcie_port *pp; + struct pcie_port *pp = irq_desc_get_handler_data(desc); - chained_irq_enter(chip, desc); + if (pp->ops->msi_host_isr) + pp->ops->msi_host_isr(pp); - pp = irq_desc_get_handler_data(desc); + chained_irq_enter(chip, desc); dw_handle_msi_irq(pp); - chained_irq_exit(chip, desc); } diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 5a18e94..27fee10 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -160,6 +160,7 @@ 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 {