From: Shawn Guo <shawn.guo@linaro.org> To: Will Deacon <will@kernel.org> Cc: Robin Murphy <robin.murphy@arm.com>, Bjorn Andersson <bjorn.andersson@linaro.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Hanjun Guo <guohanjun@huawei.com>, Sudeep Holla <sudeep.holla@arm.com>, Mark Rutland <mark.rutland@arm.com>, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Shawn Guo <shawn.guo@linaro.org> Subject: [PATCH v3] iommu/arm-smmu-qcom: hook up qcom_smmu_impl for ACPI boot Date: Sun, 9 May 2021 10:26:07 +0800 [thread overview] Message-ID: <20210509022607.17534-1-shawn.guo@linaro.org> (raw) The hookup with qcom_smmu_impl is required to do ACPI boot on SC8180X based devices like Lenovo Flex 5G laptop and Microsoft Surface Pro X. Define acpi_platform_list for these platforms and match them using acpi_match_platform_list() call, and create qcom_smmu_impl accordingly. (np == NULL) is used to check ACPI boot, because fwnode of SMMU device is a static allocation and thus helpers like has_acpi_companion() don't work here. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- Changes for v3: - Call acpi_match_platform_list() to match platform in qcom smmu driver rather than IORT code. Changes for v2: - Rather than using asl_compiler_id in IORT table, follow suggestion from Robin Murphy to use acpi_match_platform_list() to match platform. drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 98b3a1c2a181..f7e187f3fa66 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -3,6 +3,7 @@ * Copyright (c) 2019, The Linux Foundation. All rights reserved. */ +#include <linux/acpi.h> #include <linux/adreno-smmu-priv.h> #include <linux/of_device.h> #include <linux/qcom_scm.h> @@ -339,10 +340,22 @@ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { { } }; +static struct acpi_platform_list qcom_acpi_platlist[] = { + { "LENOVO", "CB-01 ", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" }, + { "QCOM ", "QCOMEDK2", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" }, + { } +}; + struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) { const struct device_node *np = smmu->dev->of_node; + if (np == NULL) { + /* Match platform for ACPI boot */ + if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) + return qcom_smmu_create(smmu, &qcom_smmu_impl); + } + if (of_match_node(qcom_smmu_impl_of_match, np)) return qcom_smmu_create(smmu, &qcom_smmu_impl); -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Shawn Guo <shawn.guo@linaro.org> To: Will Deacon <will@kernel.org> Cc: Robin Murphy <robin.murphy@arm.com>, Bjorn Andersson <bjorn.andersson@linaro.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Hanjun Guo <guohanjun@huawei.com>, Sudeep Holla <sudeep.holla@arm.com>, Mark Rutland <mark.rutland@arm.com>, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Shawn Guo <shawn.guo@linaro.org> Subject: [PATCH v3] iommu/arm-smmu-qcom: hook up qcom_smmu_impl for ACPI boot Date: Sun, 9 May 2021 10:26:07 +0800 [thread overview] Message-ID: <20210509022607.17534-1-shawn.guo@linaro.org> (raw) The hookup with qcom_smmu_impl is required to do ACPI boot on SC8180X based devices like Lenovo Flex 5G laptop and Microsoft Surface Pro X. Define acpi_platform_list for these platforms and match them using acpi_match_platform_list() call, and create qcom_smmu_impl accordingly. (np == NULL) is used to check ACPI boot, because fwnode of SMMU device is a static allocation and thus helpers like has_acpi_companion() don't work here. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- Changes for v3: - Call acpi_match_platform_list() to match platform in qcom smmu driver rather than IORT code. Changes for v2: - Rather than using asl_compiler_id in IORT table, follow suggestion from Robin Murphy to use acpi_match_platform_list() to match platform. drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 98b3a1c2a181..f7e187f3fa66 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -3,6 +3,7 @@ * Copyright (c) 2019, The Linux Foundation. All rights reserved. */ +#include <linux/acpi.h> #include <linux/adreno-smmu-priv.h> #include <linux/of_device.h> #include <linux/qcom_scm.h> @@ -339,10 +340,22 @@ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { { } }; +static struct acpi_platform_list qcom_acpi_platlist[] = { + { "LENOVO", "CB-01 ", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" }, + { "QCOM ", "QCOMEDK2", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" }, + { } +}; + struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) { const struct device_node *np = smmu->dev->of_node; + if (np == NULL) { + /* Match platform for ACPI boot */ + if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) + return qcom_smmu_create(smmu, &qcom_smmu_impl); + } + if (of_match_node(qcom_smmu_impl_of_match, np)) return qcom_smmu_create(smmu, &qcom_smmu_impl); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-05-09 2:26 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-09 2:26 Shawn Guo [this message] 2021-05-09 2:26 ` [PATCH v3] iommu/arm-smmu-qcom: hook up qcom_smmu_impl for ACPI boot Shawn Guo 2021-05-23 6:05 ` Shawn Guo 2021-05-23 6:05 ` Shawn Guo 2021-05-24 12:09 ` Robin Murphy 2021-05-24 12:09 ` Robin Murphy 2021-05-25 3:58 ` Bjorn Andersson 2021-05-25 3:58 ` Bjorn Andersson 2021-06-08 11:42 ` Will Deacon 2021-06-08 11:42 ` Will Deacon
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