diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0003-soc-fsl-qman-map-FQD-and-PFDR-areas-in-the-iommu.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0003-soc-fsl-qman-map-FQD-and-PFDR-areas-in-the-iommu.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0003-soc-fsl-qman-map-FQD-and-PFDR-areas-in-the-iommu.patch b/target/linux/layerscape/patches-5.4/701-net-0003-soc-fsl-qman-map-FQD-and-PFDR-areas-in-the-iommu.patch new file mode 100644 index 0000000000..03b8c22465 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0003-soc-fsl-qman-map-FQD-and-PFDR-areas-in-the-iommu.patch @@ -0,0 +1,52 @@ +From 02638b2627104cd02aff7484bb250d029e05dc5f Mon Sep 17 00:00:00 2001 +From: Laurentiu Tudor <laurentiu.tudor@nxp.com> +Date: Tue, 3 Apr 2018 18:08:48 +0300 +Subject: [PATCH] soc/fsl/qman: map FQD and PFDR areas in the iommu + +Add a one-to-one iommu mapping for qman private data memory areas +(FQD and PFDR). This is required for QMAN to work without faults +behind an iommu. + +Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> +--- + drivers/soc/fsl/qbman/qman_ccsr.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +--- a/drivers/soc/fsl/qbman/qman_ccsr.c ++++ b/drivers/soc/fsl/qbman/qman_ccsr.c +@@ -29,6 +29,7 @@ + */ + + #include "qman_priv.h" ++#include <linux/iommu.h> + + u16 qman_ip_rev; + EXPORT_SYMBOL(qman_ip_rev); +@@ -755,6 +756,7 @@ static int fsl_qman_probe(struct platfor + { + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; ++ struct iommu_domain *domain; + struct resource *res; + int ret, err_irq; + u16 id; +@@ -834,6 +836,19 @@ static int fsl_qman_probe(struct platfor + } + dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz); + ++ /* Create an 1-to-1 iommu mapping for fqd and pfdr areas */ ++ domain = iommu_get_domain_for_dev(dev); ++ if (domain) { ++ ret = iommu_map(domain, fqd_a, fqd_a, fqd_sz, ++ IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE); ++ if (ret) ++ dev_warn(dev, "iommu_map(fqd) failed %d\n", ret); ++ ret = iommu_map(domain, pfdr_a, pfdr_a, pfdr_sz, ++ IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE); ++ if (ret) ++ dev_warn(dev, "iommu_map(pfdr) failed %d\n", ret); ++ } ++ + ret = qman_init_ccsr(dev); + if (ret) { + dev_err(dev, "CCSR setup failed\n"); |