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From:   Serge Semin <Sergey.Semin@baikalelectronics.ru>
To:     Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
        Vinod Koul <vkoul@kernel.org>, Rob Herring <robh@kernel.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Cai Huoqing <cai.huoqing@linux.dev>,
        Robin Murphy <robin.murphy@arm.com>,
        Jingoo Han <jingoohan1@gmail.com>, Frank Li <Frank.Li@nxp.com>,
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        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= <kw@linux.com>
CC:     Serge Semin <Sergey.Semin@baikalelectronics.ru>,
        Serge Semin <fancer.lancer@gmail.com>,
        Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
        caihuoqing <caihuoqing@baidu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
        <linux-pci@vger.kernel.org>, <dmaengine@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
Subject: [PATCH v8 25/26] PCI: bt1: Set 64-bit DMA-mask
Date:   Mon, 19 Dec 2022 17:46:56 +0300
Message-ID: <20221219144658.26620-26-Sergey.Semin@baikalelectronics.ru>
In-Reply-To: <20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru>
References: <20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru>
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The DW PCIe RC IP-core is synthesized with the 64-bits AXI address bus.
Since the device is also equipped with the eDMA engine we need to
explicitly set the device DMA-mask so the DMA-engine clients would be able
to allocate the data buffers from the DMA-able memory space.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

---

Changelog v7:
- This is a new patch added on v7 stage of the series. (@Robin)
---
 drivers/pci/controller/dwc/pcie-bt1.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-bt1.c b/drivers/pci/controller/dwc/pcie-bt1.c
index f6cdb35b4cde..3b95dadf5176 100644
--- a/drivers/pci/controller/dwc/pcie-bt1.c
+++ b/drivers/pci/controller/dwc/pcie-bt1.c
@@ -583,6 +583,10 @@ static int bt1_pcie_add_port(struct bt1_pcie *btpci)
 	struct device *dev = &btpci->pdev->dev;
 	int ret;
 
+	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+	if (ret)
+		return ret;
+
 	btpci->dw.version = DW_PCIE_VER_460A;
 	btpci->dw.dev = dev;
 	btpci->dw.ops = &bt1_pcie_ops;
-- 
2.38.1