[RFC v5 2/5] drm/exynos: add iommu support for ipp
This patch adds iommu support for ipp.
For this, it adds subdrv_probe/remove callback to enable or disable ipp iommu.
we can get or put device address to a gem handle from user
through exynos_drm_gem_get/put_dma_addr().
Signed-off-by: Eunchul Kim
Signed-off-by: Jinyoung Jeon
---
drivers/gpu/drm/exynos/exynos_drm_ipp.c | 18 ++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index c640935..49eebe9 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -24,6 +24,7 @@
#include "exynos_drm_drv.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_ipp.h"
+#include "exynos_drm_iommu.h"
/*
* IPP is stand for Image Post Processing and
@@ -1771,10 +1772,24 @@ static int ipp_subdrv_probe(struct drm_device *drm_dev,
struct device *dev)
ippdrv->event_workq = ctx->event_workq;
ippdrv->sched_event = ipp_sched_event;
INIT_LIST_HEAD(>cmd_list);
+
+ if (is_drm_iommu_supported(drm_dev)) {
+ ret = drm_iommu_attach_device(drm_dev, ippdrv->dev);
+ if (ret) {
+ DRM_ERROR("failed to activate iommu\n");
+ goto err_iommu;
+ }
+ }
}
return 0;
+err_iommu:
+ /* get ipp driver entry */
+ list_for_each_entry_reverse(ippdrv, _drm_ippdrv_list, drv_list)
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv->dev);
+
err_idr:
idr_remove_all(>ipp_idr);
idr_remove_all(>prop_idr);
@@ -1791,6 +1806,9 @@ static void ipp_subdrv_remove(struct drm_device *drm_dev,
struct device *dev)
/* get ipp driver entry */
list_for_each_entry(ippdrv, _drm_ippdrv_list, drv_list) {
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv->dev);
+
ippdrv->drm_dev = NULL;
exynos_drm_ippdrv_unregister(ippdrv);
}
--
1.7.0.4
[RFC v5 2/5] drm/exynos: add iommu support for ipp
This patch adds iommu support for ipp.
For this, it adds subdrv_probe/remove callback to enable or disable ipp iommu.
we can get or put device address to a gem handle from user
through exynos_drm_gem_get/put_dma_addr().
Signed-off-by: Eunchul Kim chulspro@samsung.com
Signed-off-by: Jinyoung Jeon jy0.j...@samsung.com
---
drivers/gpu/drm/exynos/exynos_drm_ipp.c | 18 ++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index c640935..49eebe9 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -24,6 +24,7 @@
#include exynos_drm_drv.h
#include exynos_drm_gem.h
#include exynos_drm_ipp.h
+#include exynos_drm_iommu.h
/*
* IPP is stand for Image Post Processing and
@@ -1771,10 +1772,24 @@ static int ipp_subdrv_probe(struct drm_device *drm_dev,
struct device *dev)
ippdrv-event_workq = ctx-event_workq;
ippdrv-sched_event = ipp_sched_event;
INIT_LIST_HEAD(ippdrv-cmd_list);
+
+ if (is_drm_iommu_supported(drm_dev)) {
+ ret = drm_iommu_attach_device(drm_dev, ippdrv-dev);
+ if (ret) {
+ DRM_ERROR(failed to activate iommu\n);
+ goto err_iommu;
+ }
+ }
}
return 0;
+err_iommu:
+ /* get ipp driver entry */
+ list_for_each_entry_reverse(ippdrv, exynos_drm_ippdrv_list, drv_list)
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv-dev);
+
err_idr:
idr_remove_all(ctx-ipp_idr);
idr_remove_all(ctx-prop_idr);
@@ -1791,6 +1806,9 @@ static void ipp_subdrv_remove(struct drm_device *drm_dev,
struct device *dev)
/* get ipp driver entry */
list_for_each_entry(ippdrv, exynos_drm_ippdrv_list, drv_list) {
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv-dev);
+
ippdrv-drm_dev = NULL;
exynos_drm_ippdrv_unregister(ippdrv);
}
--
1.7.0.4
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