From patchwork Fri Jan 19 13:00:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523761 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6EC7551C5A; Fri, 19 Jan 2024 13:00:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669259; cv=none; b=URNCo5uGZ9xZ15nXwMR1EYWBML7lKpu0ld2uNvWiR8Nt2eUDjnElUXv9wLVix93Yaxs/rNbsk2klGdSV4d3Wq+3HD7Y8yIns/4zqB9OIka+Uk6iVBItSPfG4SL90SVmiyDiMFKtSGkNVp0mHL0/f6/w5DhUJyFsY2gQ/JhxcB/A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669259; c=relaxed/simple; bh=ySSyqcQxdsW+4zvFqSstzsLI4j2exxYuuKilwTiZSNE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=btyYo5cju++nmHq/OjdyufFUdKGuuirKKltouJZgJds4ffYnwLOBDcF+gKcmEE0lRxIRdM+yeySTwpHjOTOqNajEzyHSf7VxObQR7EEFs4ZkufVkqapLj3XCc+1lGHIn5oiJK+RBmEz0hTxRIGP+cEfNPKfVex5MKWkukQlOPcM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=QdSBS0C/; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="QdSBS0C/" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40J9e1fF027461; Fri, 19 Jan 2024 13:00:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=HOkC9Qsk1CN9mhUJ8LZjR3ZNzVxEp6Ds+kHJyE0E5fM=; b=Qd SBS0C/6b0zsbsAUqlJqQHI6wUQQMbVhuRCms2pIK+M97389OTKrbAoISIgM5iEW1 cx784TSvFQKDlogFixWU+d8FZ9c+0m67ZVqpzUsuBxLXU6PAGWS8NOtnGanwfYW3 Xb+toVo5dRMi3kg2huZ/A0F5CbLnMz+ZGNDhevAGbPm4YmTrTsOKZmhqthyH9Y59 vkl8+Eq6pLWX53RBkveE9aUYvwgYECIYErJA3vGkBMuH37IGLExtOJ7JzruqRR0Y OmBUma1y0WsJUE9h0lLpOrcfqC3aT7zQOpXRVOoE10qWV0JD5UO+xiy4ml1mI1yh GsrNKLUspvZufF1aU/IA== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vqpkvgbky-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:38 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0Z19023753; Fri, 19 Jan 2024 13:00:35 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgr6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:35 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0WkT023724; Fri, 19 Jan 2024 13:00:34 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0Y2q023744; Fri, 19 Jan 2024 13:00:34 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id C9210273A; Fri, 19 Jan 2024 18:30:33 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 1/6] dmaengine: dw-edma: Pass 'struct dw_edma_chip' to irq_vector() Date: Fri, 19 Jan 2024 18:30:17 +0530 Message-Id: <1705669223-5655-2-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: WlzlZGLYn8B3rU-ATzMvi9l1ccD_fOIz X-Proofpoint-ORIG-GUID: WlzlZGLYn8B3rU-ATzMvi9l1ccD_fOIz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 mlxlogscore=863 phishscore=0 bulkscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 adultscore=0 malwarescore=0 spamscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190066 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Manivannan Sadhasivam eDMA client drivers defining the irq_vector() callback need to access the members of dw_edma_chip structure. So let's pass that pointer instead. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Mrinmay Sarkar Reviewed-by: Dmitry Baryshkov --- drivers/dma/dw-edma/dw-edma-core.c | 11 +++++------ drivers/dma/dw-edma/dw-edma-pcie.c | 4 ++-- drivers/pci/controller/dwc/pcie-designware.c | 4 ++-- include/linux/dma/edma.h | 3 ++- 4 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 6823624..7fe1c19 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -849,7 +849,7 @@ static int dw_edma_irq_request(struct dw_edma *dw, if (chip->nr_irqs == 1) { /* Common IRQ shared among all channels */ - irq = chip->ops->irq_vector(dev, 0); + irq = chip->ops->irq_vector(chip, 0); err = request_irq(irq, dw_edma_interrupt_common, IRQF_SHARED, dw->name, &dw->irq[0]); if (err) { @@ -874,7 +874,7 @@ static int dw_edma_irq_request(struct dw_edma *dw, dw_edma_add_irq_mask(&rd_mask, *rd_alloc, dw->rd_ch_cnt); for (i = 0; i < (*wr_alloc + *rd_alloc); i++) { - irq = chip->ops->irq_vector(dev, i); + irq = chip->ops->irq_vector(chip, i); err = request_irq(irq, i < *wr_alloc ? dw_edma_interrupt_write : @@ -895,7 +895,7 @@ static int dw_edma_irq_request(struct dw_edma *dw, err_irq_free: for (i--; i >= 0; i--) { - irq = chip->ops->irq_vector(dev, i); + irq = chip->ops->irq_vector(chip, i); free_irq(irq, &dw->irq[i]); } @@ -975,7 +975,7 @@ int dw_edma_probe(struct dw_edma_chip *chip) err_irq_free: for (i = (dw->nr_irqs - 1); i >= 0; i--) - free_irq(chip->ops->irq_vector(dev, i), &dw->irq[i]); + free_irq(chip->ops->irq_vector(chip, i), &dw->irq[i]); return err; } @@ -984,7 +984,6 @@ EXPORT_SYMBOL_GPL(dw_edma_probe); int dw_edma_remove(struct dw_edma_chip *chip) { struct dw_edma_chan *chan, *_chan; - struct device *dev = chip->dev; struct dw_edma *dw = chip->dw; int i; @@ -997,7 +996,7 @@ int dw_edma_remove(struct dw_edma_chip *chip) /* Free irqs */ for (i = (dw->nr_irqs - 1); i >= 0; i--) - free_irq(chip->ops->irq_vector(dev, i), &dw->irq[i]); + free_irq(chip->ops->irq_vector(chip, i), &dw->irq[i]); /* Deregister eDMA device */ dma_async_device_unregister(&dw->dma); diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c index 1c60437..2b13725 100644 --- a/drivers/dma/dw-edma/dw-edma-pcie.c +++ b/drivers/dma/dw-edma/dw-edma-pcie.c @@ -90,9 +90,9 @@ static const struct dw_edma_pcie_data snps_edda_data = { .rd_ch_cnt = 2, }; -static int dw_edma_pcie_irq_vector(struct device *dev, unsigned int nr) +static int dw_edma_pcie_irq_vector(struct dw_edma_chip *chip, unsigned int nr) { - return pci_irq_vector(to_pci_dev(dev), nr); + return pci_irq_vector(to_pci_dev(chip->dev), nr); } static u64 dw_edma_pcie_address(struct device *dev, phys_addr_t cpu_addr) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 250cf7f..eca047a 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -858,9 +858,9 @@ static u32 dw_pcie_readl_dma(struct dw_pcie *pci, u32 reg) return val; } -static int dw_pcie_edma_irq_vector(struct device *dev, unsigned int nr) +static int dw_pcie_edma_irq_vector(struct dw_edma_chip *edma, unsigned int nr) { - struct platform_device *pdev = to_platform_device(dev); + struct platform_device *pdev = to_platform_device(edma->dev); char name[6]; int ret; diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index 3080747..7197a58 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -16,6 +16,7 @@ #define EDMA_MAX_RD_CH 8 struct dw_edma; +struct dw_edma_chip; struct dw_edma_region { u64 paddr; @@ -41,7 +42,7 @@ struct dw_edma_region { * automatically. */ struct dw_edma_plat_ops { - int (*irq_vector)(struct device *dev, unsigned int nr); + int (*irq_vector)(struct dw_edma_chip *chip, unsigned int nr); u64 (*pci_address)(struct device *dev, phys_addr_t cpu_addr); }; From patchwork Fri Jan 19 13:00:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523759 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A88E51C51; Fri, 19 Jan 2024 13:00:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669256; cv=none; b=QxEj+2kpmzGCpw4qTxCAmt/M7ag69bmTTKzZo4WYgrk5YzB8lzt5Wgz+60syBUIEWQYCiuWlfA3FYvCQX1JI0hVtzRjjVVG7hbhWFJjk4AUn4okHGcQhmL6SRPZ/ViRtIlQCwDc+doRPafjE4IkxX1M73XaWtTJ305jXdrWbgvI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669256; c=relaxed/simple; bh=7if1y3LEA2TciUlZzH4PB3mo5tvNU1LOoYchLLLIcgo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=uflT9qMELjw6JCRi4pNHXJgNxf17q9IX/j+KkMqhu0M/1qeBsLQ3XExdd2NDGT3+ZPShTvS9R64chXpzvzBpHPnFk8UdMbOXs88Vti/qg77EOVc2jPTGxrdl4IcSENKtrN98cGRSTBtMrA4ZyhgZF+sar4WiyaLFHD0mDiAJs98= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=niwQZv6+; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="niwQZv6+" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40J9BOqZ012323; Fri, 19 Jan 2024 13:00:41 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=UCljDwG5bVjcE8GSPbx7lIYjj7v3bE8mKi8kdhrvC7Q=; b=ni wQZv6+lX/WgnLZt//LkJ00+t6whjGzWUji+EmjCDOtZBidS+p17WGB4mSTH6UMC2 Asx9BjNPKbRqGWluIA2nrgGVbX4vP/wzz9N4OA8gLqRzPFxx+2fPM7ysx0+UkELI gYlpRdEGsGnacxx5JDa/7IZuSKM4q0Ic8FmYLduBuYKv4M/l/tJ2VNt5HqxY88vC UJy5+qv83UWjqlF8z6TwHKyp59mu13p3ciKUmfYS7FbBvCBdDve0UruZdOebdHf/ xwBwJRmf8J2yQu5C+V7P8FCNoHsuvBubI03hKHAdBOlyIXOrF/P5YlVY4Bc7Yh2x 9Zhf8etv1ep1sTnLeZCQ== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vqndb0grb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:40 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0bMQ023773; Fri, 19 Jan 2024 13:00:37 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgrj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:37 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0bIf023767; Fri, 19 Jan 2024 13:00:37 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0aYK023765; Fri, 19 Jan 2024 13:00:37 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id 1748B273A; Fri, 19 Jan 2024 18:30:36 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 2/6] dmaengine: dw-edma: Introduce helpers for getting the eDMA/HDMA max channel count Date: Fri, 19 Jan 2024 18:30:18 +0530 Message-Id: <1705669223-5655-3-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: GmMST81T2hRl2-fzUAeJ0DfgPBStIF6_ X-Proofpoint-GUID: GmMST81T2hRl2-fzUAeJ0DfgPBStIF6_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 suspectscore=0 clxscore=1015 mlxlogscore=843 impostorscore=0 lowpriorityscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190066 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Manivannan Sadhasivam Add common helpers for getting the eDMA/HDMA max channel count. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Mrinmay Sarkar --- drivers/dma/dw-edma/dw-edma-core.c | 18 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-designware.c | 6 +++--- include/linux/dma/edma.h | 14 ++++++++++++++ 3 files changed, 35 insertions(+), 3 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 7fe1c19..2bd6e43 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -902,6 +902,24 @@ static int dw_edma_irq_request(struct dw_edma *dw, return err; } +static u32 dw_edma_get_max_ch(enum dw_edma_map_format mf, enum dw_edma_dir dir) +{ + if (mf == EDMA_MF_HDMA_NATIVE) + return HDMA_MAX_NR_CH; + + return dir == EDMA_DIR_WRITE ? EDMA_MAX_WR_CH : EDMA_MAX_RD_CH; +} + +u32 dw_edma_get_max_rd_ch(enum dw_edma_map_format mf) +{ + return dw_edma_get_max_ch(mf, EDMA_DIR_READ); +} + +u32 dw_edma_get_max_wr_ch(enum dw_edma_map_format mf) +{ + return dw_edma_get_max_ch(mf, EDMA_DIR_WRITE); +} + int dw_edma_probe(struct dw_edma_chip *chip) { struct device *dev; diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index eca047a..96575b8 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -864,7 +864,7 @@ static int dw_pcie_edma_irq_vector(struct dw_edma_chip *edma, unsigned int nr) char name[6]; int ret; - if (nr >= EDMA_MAX_WR_CH + EDMA_MAX_RD_CH) + if (nr >= dw_edma_get_max_rd_ch(edma->mf) + dw_edma_get_max_wr_ch(edma->mf)) return -EINVAL; ret = platform_get_irq_byname_optional(pdev, "dma"); @@ -923,8 +923,8 @@ static int dw_pcie_edma_find_chip(struct dw_pcie *pci) pci->edma.ll_rd_cnt = FIELD_GET(PCIE_DMA_NUM_RD_CHAN, val); /* Sanity check the channels count if the mapping was incorrect */ - if (!pci->edma.ll_wr_cnt || pci->edma.ll_wr_cnt > EDMA_MAX_WR_CH || - !pci->edma.ll_rd_cnt || pci->edma.ll_rd_cnt > EDMA_MAX_RD_CH) + if (!pci->edma.ll_wr_cnt || pci->edma.ll_wr_cnt > dw_edma_get_max_wr_ch(pci->edma.mf) || + !pci->edma.ll_rd_cnt || pci->edma.ll_rd_cnt > dw_edma_get_max_rd_ch(pci->edma.mf)) return -EINVAL; return 0; diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index 7197a58..550f6a4 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -106,6 +106,9 @@ struct dw_edma_chip { #if IS_REACHABLE(CONFIG_DW_EDMA) int dw_edma_probe(struct dw_edma_chip *chip); int dw_edma_remove(struct dw_edma_chip *chip); + +u32 dw_edma_get_max_rd_ch(enum dw_edma_map_format mf); +u32 dw_edma_get_max_wr_ch(enum dw_edma_map_format mf); #else static inline int dw_edma_probe(struct dw_edma_chip *chip) { @@ -116,6 +119,17 @@ static inline int dw_edma_remove(struct dw_edma_chip *chip) { return 0; } + +static inline u32 dw_edma_get_max_rd_ch(enum dw_edma_map_format mf) +{ + return 0; +} + +static inline u32 dw_edma_get_max_wr_ch(enum dw_edma_map_format mf) +{ + return 0; +} + #endif /* CONFIG_DW_EDMA */ #endif /* _DW_EDMA_H */ From patchwork Fri Jan 19 13:00:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523762 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2046A52F86; Fri, 19 Jan 2024 13:00:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669260; cv=none; b=iB2nmH0SSZ0pwZBPcZSJiStmvwEThanOLpJy6d4x9c1cSWuOnKDMD/3x4Fozs/DrSRqgncgfAJu6l67TB0jNq3l1GRBFuCZJYFQ31dTZ6t9ByaE6smpX9glnMbvAU72+ZKqJmyyNDZ8t20ukepONkPI+6sYh3LxElYgY6wg6nSo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669260; c=relaxed/simple; bh=EerfizSXmr8ySSTQG3Ek8cTyqeYJTbG6H8QUFJ+dUbc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=dwpLCOz/f7dLawmjcu/GJHbnaMaMKdniV4eNpJ52H8rkV8eN34hswRKpMyeW6RvoNm5WRA7raFXMDGsEgU/2ft2sq1pF6v+L69tK5+BxC/Il9Fp+6/6rTAwnys2MIUcUBhtWPVB2Bs9J80C3OZYWhqnhun/L8Xjb/JgGdaj0WU0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=chlwqT5n; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="chlwqT5n" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40JCRWRX021492; Fri, 19 Jan 2024 13:00:44 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=J5N0eH+XorUHi+CvGk/WwzsrjWyuz4FCQ2eZXs4R5nY=; b=ch lwqT5nOSWEWRJwPAFnbuTrHhaRl7l9q+E5zsdLBei1bYES4dpzq0is7VpLxwOiwc fVeaPlli/Ix157Tc0v/tvnr9baWTAN7N1uhzUt4HC07lc5Ru2YCRUdrAhzV62m+H 5gxKk7AHTMfGm9WudeqFPsadude9nT1xV4pEr9lFF4nVPL2tn2eYnDcDdxdtMQyo dvJFe0+cWlptKAhAxhE9nzoe1zOytYvB2FuzW4GrRUrwtOha9l9Qw6l4OOZTtziy WM5FKtijvB1vhn5Wjr+5V2SnE3mwq1T/6Kpfm7xNHnhKmqbaO8yr0kshUXrOM3CR LJJKmBw5tL+TYPD30C5A== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vqh2k90tv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:43 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0eMr023790; Fri, 19 Jan 2024 13:00:40 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgrw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:40 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0dLE023785; Fri, 19 Jan 2024 13:00:39 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0dlN023784; Fri, 19 Jan 2024 13:00:39 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id 3BC35273A; Fri, 19 Jan 2024 18:30:38 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 3/6] PCI: dwc: Add HDMA support Date: Fri, 19 Jan 2024 18:30:19 +0530 Message-Id: <1705669223-5655-4-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: z69Q7pBn-mgOoTOjfxot1-qCLdMS5U1p X-Proofpoint-ORIG-GUID: z69Q7pBn-mgOoTOjfxot1-qCLdMS5U1p X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 clxscore=1015 impostorscore=0 phishscore=0 mlxlogscore=803 mlxscore=0 suspectscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190066 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Manivannan Sadhasivam Hyper DMA (HDMA) is already supported by the dw-edma dmaengine driver. Unlike it's predecessor Embedded DMA (eDMA), HDMA supports only the unrolled mapping format. So the platform drivers need to provide a valid base address of the CSRs. Also, there is no standard way to auto detect the number of available read/write channels in a platform. So the platform drivers has to provide that information as well. For adding HDMA support, the mapping format set by the platform drivers is used to detect whether eDMA or HDMA is being used, since we cannot auto detect it in a sane way. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Mrinmay Sarkar --- drivers/pci/controller/dwc/pcie-designware.c | 55 ++++++++++++++++++++++++---- 1 file changed, 47 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 96575b8..07a1f2d 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -880,7 +880,29 @@ static struct dw_edma_plat_ops dw_pcie_edma_ops = { .irq_vector = dw_pcie_edma_irq_vector, }; -static int dw_pcie_edma_find_chip(struct dw_pcie *pci) +static int dw_pcie_find_hdma(struct dw_pcie *pci) +{ + /* + * Since HDMA supports only unrolled mapping, platform drivers need to + * provide a valid base address. + */ + if (!pci->edma.reg_base) + return -ENODEV; + + /* + * Since there is no standard way to detect the number of read/write + * HDMA channels, platform drivers are expected to provide the channel + * count. Let's also do a sanity check of them to make sure that the + * counts are within the limit specified by the spec. + */ + if (!pci->edma.ll_wr_cnt || pci->edma.ll_wr_cnt > dw_edma_get_max_wr_ch(pci->edma.mf) || + !pci->edma.ll_rd_cnt || pci->edma.ll_rd_cnt > dw_edma_get_max_rd_ch(pci->edma.mf)) + return -EINVAL; + + return 0; +} + +static int dw_pcie_find_edma(struct dw_pcie *pci) { u32 val; @@ -912,13 +934,6 @@ static int dw_pcie_edma_find_chip(struct dw_pcie *pci) return -ENODEV; } - pci->edma.dev = pci->dev; - - if (!pci->edma.ops) - pci->edma.ops = &dw_pcie_edma_ops; - - pci->edma.flags |= DW_EDMA_CHIP_LOCAL; - pci->edma.ll_wr_cnt = FIELD_GET(PCIE_DMA_NUM_WR_CHAN, val); pci->edma.ll_rd_cnt = FIELD_GET(PCIE_DMA_NUM_RD_CHAN, val); @@ -930,6 +945,30 @@ static int dw_pcie_edma_find_chip(struct dw_pcie *pci) return 0; } +static int dw_pcie_edma_find_chip(struct dw_pcie *pci) +{ + int ret; + + if (pci->edma.mf == EDMA_MF_HDMA_NATIVE) { + ret = dw_pcie_find_hdma(pci); + if (ret) + return ret; + } else { + ret = dw_pcie_find_edma(pci); + if (ret) + return ret; + } + + pci->edma.dev = pci->dev; + + if (!pci->edma.ops) + pci->edma.ops = &dw_pcie_edma_ops; + + pci->edma.flags |= DW_EDMA_CHIP_LOCAL; + + return 0; +} + static int dw_pcie_edma_irq_verify(struct dw_pcie *pci) { struct platform_device *pdev = to_platform_device(pci->dev); From patchwork Fri Jan 19 13:00:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523764 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0BF2A537F8; Fri, 19 Jan 2024 13:01:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669261; cv=none; b=ZS34LDnSsyKD1E/2fqzMXgAlShFJXBeHsGYbqwUJzsNPxh07mWKDrRCmcf7dBU8vLLCtKeZwxoMXI6akVA2bOmZSwuRlsPDgFQXQrQiW1ywbp439BwerBKupLGhXvoKqjODfdpY5q7m6k5FreGGTF41RfhdCHEnH8BdNIjkstYc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669261; c=relaxed/simple; bh=jX++M430EcANMENTDtP9yb5IhDtDJ5Z2fZ7ZYqDAREE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=UF0OytzyReHod+UpVkTPv/vYmQGTr2RKhFWUTy1ptcLoPSPf2hhdXmLUssa95N2wcd443QV0EbvJpZfVm/N+QyXL7n5pZYj+QVYppdagoPs4b0M07yZB3Pq/Cc6dkTQEKj9guN3vhwEkINGioTRpQezGDzDQ6KPhp9Or+tDbu28= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=l1SAwvsn; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="l1SAwvsn" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40J9FRuv025502; Fri, 19 Jan 2024 13:00:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=fK+ysfreXQCoYCrRDidxH8G6FWPAOE4Xo0Df71HiZKw=; b=l1 SAwvsnRzclC6ZNnViiJkoMcIH/kygWCF6FgiHLjIDQgxyCIoD4RTZWIZg2d5e9RF 6xEgVYLaaVWsKqiag9a5HuTViAG0Nz6LO8EeQC535ADy92D3BA+wgDf3EU3llQOx tYDllR8T4J4CDh6HwnMLqF7dymlosZK/wB9ZksWCgNGAFUn+l2slW60FFWVXn5Rt lJ0rEy4jHVsbpYtaSry/deaKcGtmQKEWOJLkh5HLokmyJDYUBi8X9hR8Nhb79L89 fDdQZSa5Pbeub1TIgQSf9Z6O3B8RyppFuwiCH0M/eYrkgb+wffKq91B1MDTrn0n7 b3H0OKUr0C9fcSkAziww== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vqh2k90ub-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:45 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0Wfh023730; Fri, 19 Jan 2024 13:00:42 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgs8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:42 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0fbb023804; Fri, 19 Jan 2024 13:00:41 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0fN1023801; Fri, 19 Jan 2024 13:00:41 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id 5BE75273A; Fri, 19 Jan 2024 18:30:40 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 4/6] dmaengine: dw-edma: Move HDMA_V0_MAX_NR_CH definition to edma.h Date: Fri, 19 Jan 2024 18:30:20 +0530 Message-Id: <1705669223-5655-5-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 2M1_j7cANaScCFkrQDV0zx96fN0Wmx4y X-Proofpoint-ORIG-GUID: 2M1_j7cANaScCFkrQDV0zx96fN0Wmx4y X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 clxscore=1015 impostorscore=0 phishscore=0 mlxlogscore=695 mlxscore=0 suspectscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190066 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Manivannan Sadhasivam To maintain uniformity with eDMA, let's move the HDMA max channel definition to edma.h. While at it, let's also rename it to HDMA_MAX_NR_CH. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Mrinmay Sarkar --- drivers/dma/dw-edma/dw-hdma-v0-core.c | 4 ++-- drivers/dma/dw-edma/dw-hdma-v0-regs.h | 3 +-- include/linux/dma/edma.h | 1 + 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/dw-edma/dw-hdma-v0-core.c b/drivers/dma/dw-edma/dw-hdma-v0-core.c index 1f4cb7d..819ef1f 100644 --- a/drivers/dma/dw-edma/dw-hdma-v0-core.c +++ b/drivers/dma/dw-edma/dw-hdma-v0-core.c @@ -54,7 +54,7 @@ static void dw_hdma_v0_core_off(struct dw_edma *dw) { int id; - for (id = 0; id < HDMA_V0_MAX_NR_CH; id++) { + for (id = 0; id < HDMA_MAX_NR_CH; id++) { SET_BOTH_CH_32(dw, id, int_setup, HDMA_V0_STOP_INT_MASK | HDMA_V0_ABORT_INT_MASK); SET_BOTH_CH_32(dw, id, int_clear, @@ -70,7 +70,7 @@ static u16 dw_hdma_v0_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir) * available, we set it to maximum channels and let the platform * set the right number of channels. */ - return HDMA_V0_MAX_NR_CH; + return HDMA_MAX_NR_CH; } static enum dma_status dw_hdma_v0_core_ch_status(struct dw_edma_chan *chan) diff --git a/drivers/dma/dw-edma/dw-hdma-v0-regs.h b/drivers/dma/dw-edma/dw-hdma-v0-regs.h index a974abd..cd7eab2 100644 --- a/drivers/dma/dw-edma/dw-hdma-v0-regs.h +++ b/drivers/dma/dw-edma/dw-hdma-v0-regs.h @@ -11,7 +11,6 @@ #include -#define HDMA_V0_MAX_NR_CH 8 #define HDMA_V0_LOCAL_ABORT_INT_EN BIT(6) #define HDMA_V0_REMOTE_ABORT_INT_EN BIT(5) #define HDMA_V0_LOCAL_STOP_INT_EN BIT(4) @@ -92,7 +91,7 @@ struct dw_hdma_v0_ch { } __packed; struct dw_hdma_v0_regs { - struct dw_hdma_v0_ch ch[HDMA_V0_MAX_NR_CH]; /* 0x0000..0x0fa8 */ + struct dw_hdma_v0_ch ch[HDMA_MAX_NR_CH]; /* 0x0000..0x0fa8 */ } __packed; struct dw_hdma_v0_lli { diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index 550f6a4..2cdf249a 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -14,6 +14,7 @@ #define EDMA_MAX_WR_CH 8 #define EDMA_MAX_RD_CH 8 +#define HDMA_MAX_NR_CH 8 struct dw_edma; struct dw_edma_chip; From patchwork Fri Jan 19 13:00:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523763 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6535152F9A; Fri, 19 Jan 2024 13:00:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669260; cv=none; b=GxTtvXe8AV9KsJ2P9vx8CCoQYYKp8YcxCfQuid2QFo88edy/FMysPyPAmkM6dd3N/uD4Zl2cy3INDOMgYJMAl1iabfhCe93gqEzmxeW6ktgbU07Fj8GB0td5PvRGuRA7mMjxOnYe/Jetm58fRdWRY/8xLISulWOR+B2ismAhty8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669260; c=relaxed/simple; bh=CqYEzmURPXo21SeA3Wn74xLCC9GqEY3rnUfGrRYc2yo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=peY3OvG9/WATmXi4g9fThPXdKKWFu0eNNp+i5cds3/OFv2v2WyAYL48LCYRYXCGNKsKtLaHQRFnvP/Uv5548bxTdUAQi67GMrIhvAT4yG3H9g4LMwcwaU2D4yMim4h+PUFJPizdRbwpns4hBiE56vmw7r1uqRhWly5r91zHSnyg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=DcJVAeFc; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="DcJVAeFc" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40JCFHFS011907; Fri, 19 Jan 2024 13:00:48 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=kvzZR+kG3EOMUkKldFt2KjVBCWiNRqBgBOnY3xjuKO4=; b=Dc JVAeFc8RuGnF/uWjzHg60SUj43xwVHBSnH4+eAh8dPvAMmidp/cJe08CdvLNuaKq rf25z2Z3bompxZsPxtJOffibB+7GtrSuiiBJPRN/5ZTbrVUMRp/gshVqyHsqdRUU LxaUtQt7wjmEtx3Kykdv5ZB2FnbvSDo4LFgDnwD6+x7xeMcOK6CNScf2TH3pnitV js9oE4Q972tEMEnGQuA8wVuUBtLRkMtenDJ1Ccrriwq66rqzTG5N+SeE3zNbQuBN YsSq3SrcoCKQLiIjG91Mxuyo9dF3UtuWaX5nmaHxp0eXpeQ9UvZyWYT79NMkzO3z ViwzE89pBTZcXmhenGLw== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vqreq847n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:47 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0bMR023773; Fri, 19 Jan 2024 13:00:43 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgsk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:43 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0fbd023804; Fri, 19 Jan 2024 13:00:43 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0hlw023830; Fri, 19 Jan 2024 13:00:43 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id 2D4EE273A; Fri, 19 Jan 2024 18:30:42 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 5/6] PCI: qcom-ep: Provide number of read/write channel for HDMA Date: Fri, 19 Jan 2024 18:30:21 +0530 Message-Id: <1705669223-5655-6-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 3DMeqHBM_sncGLSzpC3AZKYrcE71h8st X-Proofpoint-GUID: 3DMeqHBM_sncGLSzpC3AZKYrcE71h8st X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 phishscore=0 mlxscore=0 priorityscore=1501 bulkscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 adultscore=0 mlxlogscore=783 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190066 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: There is no standard way to auto detect the number of available read/write channels in a platform. So adding this change to provide read/write channels count and also provide "EDMA_MF_HDMA_NATIVE" flag to support HDMA for 8775 platform. 8775 has IP version 1.34.0 so intruduce a new cfg(cfg_1_34_0) for this platform. Add struct qcom_pcie_ep_cfg as match data. Assign hdma_supported flag into struct qcom_pcie_ep_cfg and set it true in cfg_1_34_0. Signed-off-by: Mrinmay Sarkar --- drivers/pci/controller/dwc/pcie-qcom-ep.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c index 45008e0..8d56435 100644 --- a/drivers/pci/controller/dwc/pcie-qcom-ep.c +++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c @@ -149,6 +149,10 @@ enum qcom_pcie_ep_link_status { QCOM_PCIE_EP_LINK_DOWN, }; +struct qcom_pcie_ep_cfg { + bool hdma_supported; +}; + /** * struct qcom_pcie_ep - Qualcomm PCIe Endpoint Controller * @pci: Designware PCIe controller struct @@ -167,6 +171,7 @@ enum qcom_pcie_ep_link_status { * @num_clks: PCIe clocks count * @perst_en: Flag for PERST enable * @perst_sep_en: Flag for PERST separation enable + * @cfg: PCIe EP config struct * @link_status: PCIe Link status * @global_irq: Qualcomm PCIe specific Global IRQ * @perst_irq: PERST# IRQ @@ -194,6 +199,7 @@ struct qcom_pcie_ep { u32 perst_en; u32 perst_sep_en; + const struct qcom_pcie_ep_cfg *cfg; enum qcom_pcie_ep_link_status link_status; int global_irq; int perst_irq; @@ -511,6 +517,10 @@ static void qcom_pcie_perst_assert(struct dw_pcie *pci) pcie_ep->link_status = QCOM_PCIE_EP_LINK_DISABLED; } +static const struct qcom_pcie_ep_cfg cfg_1_34_0 = { + .hdma_supported = true, +}; + /* Common DWC controller ops */ static const struct dw_pcie_ops pci_ops = { .link_up = qcom_pcie_dw_link_up, @@ -816,6 +826,13 @@ static int qcom_pcie_ep_probe(struct platform_device *pdev) pcie_ep->pci.ops = &pci_ops; pcie_ep->pci.ep.ops = &pci_ep_ops; pcie_ep->pci.edma.nr_irqs = 1; + + pcie_ep->cfg = of_device_get_match_data(dev); + if (pcie_ep->cfg && pcie_ep->cfg->hdma_supported) { + pcie_ep->pci.edma.ll_wr_cnt = 1; + pcie_ep->pci.edma.ll_rd_cnt = 1; + pcie_ep->pci.edma.mf = EDMA_MF_HDMA_NATIVE; + } platform_set_drvdata(pdev, pcie_ep); ret = qcom_pcie_ep_get_resources(pdev, pcie_ep); @@ -875,7 +892,7 @@ static void qcom_pcie_ep_remove(struct platform_device *pdev) } static const struct of_device_id qcom_pcie_ep_match[] = { - { .compatible = "qcom,sa8775p-pcie-ep", }, + { .compatible = "qcom,sa8775p-pcie-ep", .data = &cfg_1_34_0}, { .compatible = "qcom,sdx55-pcie-ep", }, { .compatible = "qcom,sm8450-pcie-ep", }, { } From patchwork Fri Jan 19 13:00:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 13523765 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A33F453810; Fri, 19 Jan 2024 13:01:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669262; cv=none; b=LuoO6l6YyIYxdYmNw8nReAs/SIM39zZXx9UZvpgHlhPNN4bgz41xGoLrewVDeR17roZRTSMsjkH06d4cx/xirtkIqZ6sKr2tk0e9d7UVGDAZveUU2l6bl7mgnS3225tgcVtxD36BKwtBfoXN1d+R77kK46haDsn9OZOkBlWnoeU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705669262; c=relaxed/simple; bh=m6QGvwxlfTD71Dxih1Q+Xek8JiDVNj0ad3KutMzI3Wg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=KaYoB+dfxH088FwVMyvC2tiOJtbrVcdOOSHGRTXj/gEts9rbXikLlQlDigEl38PMunuKyEC7KlY+9uzD/ojkzRgIuqO0P54xBuWSYXGglSo3kiwxykNhOGJe70synkEWlKYcpWwhP8RZLQuixMAiojejpvGF02ukGe4zfKWUUHw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=qualcomm.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=LWYO/L2k; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="LWYO/L2k" Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40JBwPkw011426; Fri, 19 Jan 2024 13:00:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references; s= qcppdkim1; bh=jwanHwyWHbpZ4C33Snp/CmWYibz69kj30TZT29IAQw0=; b=LW YO/L2kVWfvMDqycvy64rbmbUGhInVRTAeCmzxOGBJbrDfNiGG2cyarpwJyiBInmA pNuom3lqAzj9zKvASQf7B3TcAgqg8Sb57JCE/hnSyrCiuf8t2nl/PhpPDOXVYAOr CDYZMFgvYYvN62/dIbnvQeVNg0X4oWb+JTHVXlHPA7jjO2ZZ2Hr8isAo8FlCJA4g qzu8MzhgIV3xwGKk+t+yryebAUaEY7Qs+/eji7EYE9Kk/BZmCEqGhNe+r93IUIkG frSqH+j9GAiFj1FM3KDMeQprDiKVwlEhn2xr7j/IKwyJT2uBaFEey8ElbNEy1h/y 7pWAI3Z/rlNJkETUWrVQ== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3vq403jue3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 19 Jan 2024 13:00:48 +0000 (GMT) Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 40JD0ju9023861; Fri, 19 Jan 2024 13:00:45 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3vkkkmtgsw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 19 Jan 2024 13:00:45 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40JD0jY1023853; Fri, 19 Jan 2024 13:00:45 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 40JD0jEl023849; Fri, 19 Jan 2024 13:00:45 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id 3D950273A; Fri, 19 Jan 2024 18:30:44 +0530 (+0530) From: Mrinmay Sarkar To: vkoul@kernel.org, jingoohan1@gmail.com, conor+dt@kernel.org, konrad.dybcio@linaro.org, manivannan.sadhasivam@linaro.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Gustavo Pimentel , Serge Semin , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev Subject: [PATCH v1 6/6] PCI: epf-mhi: Add flag to enable HDMA for SA8775P Date: Fri, 19 Jan 2024 18:30:22 +0530 Message-Id: <1705669223-5655-7-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> References: <1705669223-5655-1-git-send-email-quic_msarkar@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: WWE7FCmYj8w85w0MqfhUdlV8VFvKiadI X-Proofpoint-ORIG-GUID: WWE7FCmYj8w85w0MqfhUdlV8VFvKiadI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-19_07,2024-01-19_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 phishscore=0 spamscore=0 adultscore=0 mlxlogscore=688 malwarescore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401190065 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: SA8775P supports HDMA as DMA engine so adding 'MHI_EPF_USE_DMA' flag to enable HDMA support. Signed-off-by: Mrinmay Sarkar Reviewed-by: Manivannan Sadhasivam --- drivers/pci/endpoint/functions/pci-epf-mhi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c index 2c54d80..570c1d1f 100644 --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c @@ -137,6 +137,7 @@ static const struct pci_epf_mhi_ep_info sa8775p_info = { .epf_flags = PCI_BASE_ADDRESS_MEM_TYPE_32, .msi_count = 32, .mru = 0x8000, + .flags = MHI_EPF_USE_DMA, }; struct pci_epf_mhi {