From: laurentiu.tudor@nxp.com
To: netdev@vger.kernel.org, madalin.bucur@nxp.com,
roy.pledge@nxp.com, camelia.groza@nxp.com, leoyang.li@nxp.com
Cc: davem@davemloft.net, iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [PATCH 03/13] soc/fsl/qman: map FQD and PFDR areas in the iommu
Date: Fri, 29 Mar 2019 16:00:04 +0200 [thread overview]
Message-ID: <20190329140014.8126-4-laurentiu.tudor@nxp.com> (raw)
In-Reply-To: <20190329140014.8126-1-laurentiu.tudor@nxp.com>
From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
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(+)
diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c
index 12e414ca3b03..eec7700507e1 100644
--- 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);
@@ -699,6 +700,7 @@ static int fsl_qman_probe(struct platform_device *pdev)
{
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;
@@ -778,6 +780,19 @@ static int fsl_qman_probe(struct platform_device *pdev)
}
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");
--
2.17.1
next prev parent reply other threads:[~2019-03-29 14:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-29 14:00 [PATCH 00/13] Prerequisites for NXP LS104xA SMMU enablement laurentiu.tudor
2019-03-29 14:00 ` [PATCH 01/13] soc/fsl/qman: fixup liodns only on ppc targets laurentiu.tudor
2019-03-29 21:50 ` Li Yang
2019-04-01 10:21 ` Laurentiu Tudor
2019-03-29 14:00 ` [PATCH 02/13] soc/fsl/bman: map FBPR area in the iommu laurentiu.tudor
2019-03-29 14:50 ` Robin Murphy
2019-04-01 11:04 ` Laurentiu Tudor
2019-04-19 13:41 ` Laurentiu Tudor
2019-03-29 21:16 ` Li Yang
2019-04-01 11:15 ` Laurentiu Tudor
2019-03-29 14:00 ` laurentiu.tudor [this message]
2019-03-29 14:00 ` [PATCH 04/13] soc/fsl/qman-portal: map CENA " laurentiu.tudor
2019-03-29 14:00 ` [PATCH 05/13] soc/fsl/bqman: page align iommu mapping sizes laurentiu.tudor
2019-03-29 22:06 ` Li Yang
2019-04-01 10:18 ` Laurentiu Tudor
2019-03-29 14:00 ` [PATCH 06/13] soc/fsl/qbman_portals: add APIs to retrieve the probing status laurentiu.tudor
2019-04-01 22:12 ` Li Yang
2019-03-29 14:00 ` [PATCH 07/13] fsl/fman: backup and restore ICID registers laurentiu.tudor
2019-03-29 14:00 ` [PATCH 08/13] fsl/fman: add API to get the device behind a fman port laurentiu.tudor
2019-03-29 14:00 ` [PATCH 09/13] dpaa_eth: defer probing after qbman laurentiu.tudor
2019-03-29 14:00 ` [PATCH 10/13] dpaa_eth: base dma mappings on the fman rx port laurentiu.tudor
2019-03-29 14:00 ` [PATCH 11/13] dpaa_eth: fix iova handling for contiguous frames laurentiu.tudor
2019-03-29 14:00 ` [PATCH 12/13] dpaa_eth: fix iova handling for sg frames laurentiu.tudor
2019-03-29 14:00 ` [PATCH 13/13] dpaa_eth: fix SG frame cleanup laurentiu.tudor
2019-03-29 15:25 ` Joakim Tjernlund
2019-04-01 10:41 ` Laurentiu Tudor
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