From c12e2617b25535014a766a0bc3e05134ef817b82 Mon Sep 17 00:00:00 2001 From: Eunchul Kim Date: Fri, 14 Dec 2012 17:58:54 +0900 Subject: [PATCH] drm/exynos: add iommu support for ipp This patch adds iommu support for IPP subsystem framework. 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 Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_ipp.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) 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); } -- 2.7.4