diff options
Diffstat (limited to 'drivers/soc/fsl/qbman/qman_portal.c')
| -rw-r--r-- | drivers/soc/fsl/qbman/qman_portal.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 5685b6706893..d0a289436fdd 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -29,6 +29,7 @@ */ #include "qman_priv.h" +#include <linux/iommu.h> struct qman_portal *qman_dma_portal; EXPORT_SYMBOL(qman_dma_portal); @@ -231,6 +232,7 @@ static int qman_portal_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; + struct iommu_domain *domain; struct qm_portal_config *pcfg; struct resource *addr_phys[2]; int irq, cpu, err, i; @@ -294,6 +296,21 @@ static int qman_portal_probe(struct platform_device *pdev) goto err_ioremap2; } + /* Create an 1-to-1 iommu mapping for cena portal area */ + domain = iommu_get_domain_for_dev(dev); + if (domain) { + /* + * Note: not mapping this as cacheable triggers the infamous + * QMan CIDE error. + */ + err = iommu_map(domain, + addr_phys[0]->start, addr_phys[0]->start, + PAGE_ALIGN(resource_size(addr_phys[0])), + IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE); + if (err) + dev_warn(dev, "failed to iommu_map() %d\n", err); + } + pcfg->pools = qm_get_pools_sdqcr(); spin_lock(&qman_lock); @@ -306,6 +323,9 @@ static int qman_portal_probe(struct platform_device *pdev) } cpumask_set_cpu(cpu, &portal_cpus); + if (!__qman_portals_probed && + cpumask_weight(&portal_cpus) == num_online_cpus()) + __qman_portals_probed = 1; spin_unlock(&qman_lock); pcfg->cpu = cpu; |