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Wed, 27 Jan 2021 07:44:44 -0800 (PST) From: Jean-Philippe Brucker To: joro@8bytes.org, will@kernel.org Subject: [PATCH v12 09/10] ACPI/IORT: Enable stall support for platform devices Date: Wed, 27 Jan 2021 16:43:22 +0100 Message-Id: <20210127154322.3959196-10-jean-philippe@linaro.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210127154322.3959196-1-jean-philippe@linaro.org> References: <20210127154322.3959196-1-jean-philippe@linaro.org> MIME-Version: 1.0 Cc: vivek.gautam@arm.com, guohanjun@huawei.com, Jean-Philippe Brucker , linux-acpi@vger.kernel.org, zhangfei.gao@linaro.org, lenb@kernel.org, devicetree@vger.kernel.org, kevin.tian@intel.com, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, sudeep.holla@arm.com, robin.murphy@arm.com, linux-accelerators@lists.ozlabs.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Copy the "Stall supported" bit, that tells whether a named component supports stall, into the dma-can-stall device property. Acked-by: Jonathan Cameron Signed-off-by: Jean-Philippe Brucker --- drivers/acpi/arm64/iort.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index c9a8bbb74b09..42820d7eb869 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -968,13 +968,15 @@ static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) static void iort_named_component_init(struct device *dev, struct acpi_iort_node *node) { - struct property_entry props[2] = {}; + struct property_entry props[3] = {}; struct acpi_iort_named_component *nc; nc = (struct acpi_iort_named_component *)node->node_data; props[0] = PROPERTY_ENTRY_U32("pasid-num-bits", FIELD_GET(ACPI_IORT_NC_PASID_BITS, nc->node_flags)); + if (nc->node_flags & ACPI_IORT_NC_STALL_SUPPORTED) + props[1] = PROPERTY_ENTRY_BOOL("dma-can-stall"); if (device_add_properties(dev, props)) dev_warn(dev, "Could not add device properties\n"); -- 2.30.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu