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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1707240504; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8HAy2xAuPJeCpNnNishsphDqlFIPREAv9Gabwc+YWgA=; b=LKEFZU8/pHxDeB1+ZDDRHLp5JzF2MK73NhgWQzq5uiL9OlgqJN8Z6iG6QCZXR8q+sMXDcO E0Cc2OzMBnyaOicvvupO4LwLDe8RWRnTySRNhjIhobJUS8CXg8Sf/LULxmYY1Ipyj9mo/H l9mf7hud5VYfhzkShdKgg1s+vkDczBs= From: Sui Jingfeng To: Lucas Stach Cc: Russell King , Christian Gmeiner , David Airlie , Daniel Vetter , Maxime Ripard , Thomas Zimmermann , dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sui Jingfeng Subject: [etnaviv-next v13 3/7] drm/etnaviv: Embed struct drm_device in struct etnaviv_drm_private Date: Wed, 7 Feb 2024 01:27:55 +0800 Message-Id: <20240206172759.421737-4-sui.jingfeng@linux.dev> In-Reply-To: <20240206172759.421737-1-sui.jingfeng@linux.dev> References: <20240206172759.421737-1-sui.jingfeng@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790171503045488787 X-GMAIL-MSGID: 1790171503045488787 Both the instance of struct drm_device and the instance of struct etnaviv_drm_private are intended to be shared by all GPU cores. They both have only one instance across drm/etnaviv, therefore, embed struct drm_device into struct etnaviv_drm_private, and use container_of() to retrieve pointer for the containing structure. The benifit is that the DRM device can be initialized with devm_drm_dev_alloc() and the DRM device created is automatically put on driver detach, so don't need us to call drm_dev_put() explicitly on driver teardown. It's also eliminate the need to use the .dev_private member, which is deprecated according to the drm document. Signed-off-by: Sui Jingfeng --- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 65 ++++++++------------ drivers/gpu/drm/etnaviv/etnaviv_drv.h | 7 +++ drivers/gpu/drm/etnaviv/etnaviv_gem.c | 6 +- drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 2 +- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 6 +- drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 4 +- 6 files changed, 40 insertions(+), 50 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 035ac0c6884f..5ba2b3a386b3 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -41,14 +41,9 @@ static struct device_node *etnaviv_of_first_available_node(void) return NULL; } -static struct etnaviv_drm_private *etnaviv_alloc_private(struct device *dev) +static int etnaviv_private_init(struct device *dev, + struct etnaviv_drm_private *priv) { - struct etnaviv_drm_private *priv; - - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) - return ERR_PTR(-ENOMEM); - xa_init_flags(&priv->active_contexts, XA_FLAGS_ALLOC); mutex_init(&priv->gem_lock); @@ -58,15 +53,14 @@ static struct etnaviv_drm_private *etnaviv_alloc_private(struct device *dev) priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(dev); if (IS_ERR(priv->cmdbuf_suballoc)) { - kfree(priv); dev_err(dev, "Failed to create cmdbuf suballocator\n"); - return ERR_PTR(-ENOMEM); + return -ENOMEM; } - return priv; + return 0; } -static void etnaviv_free_private(struct etnaviv_drm_private *priv) +static void etnaviv_private_fini(struct etnaviv_drm_private *priv) { if (!priv) return; @@ -74,13 +68,11 @@ static void etnaviv_free_private(struct etnaviv_drm_private *priv) etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc); xa_destroy(&priv->active_contexts); - - kfree(priv); } static void load_gpu(struct drm_device *dev) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); unsigned int i; for (i = 0; i < ETNA_MAX_PIPES; i++) { @@ -98,7 +90,7 @@ static void load_gpu(struct drm_device *dev) static int etnaviv_open(struct drm_device *dev, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct etnaviv_file_private *ctx; int ret, i; @@ -141,7 +133,7 @@ static int etnaviv_open(struct drm_device *dev, struct drm_file *file) static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct etnaviv_file_private *ctx = file->driver_priv; unsigned int i; @@ -166,7 +158,7 @@ static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file) #ifdef CONFIG_DEBUG_FS static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); etnaviv_gem_describe_objects(priv, m); @@ -260,7 +252,7 @@ static int show_each_gpu(struct seq_file *m, void *arg) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct etnaviv_gpu *gpu; int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) = node->info_ent->data; @@ -303,7 +295,7 @@ static void etnaviv_debugfs_init(struct drm_minor *minor) static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_param *args = data; struct etnaviv_gpu *gpu; @@ -396,7 +388,7 @@ static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_wait_fence *args = data; - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_timespec *timeout = &args->timeout; struct etnaviv_gpu *gpu; @@ -444,7 +436,7 @@ static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data, static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_gem_wait *args = data; struct drm_etnaviv_timespec *timeout = &args->timeout; struct drm_gem_object *obj; @@ -478,7 +470,7 @@ static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data, static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_pm_domain *args = data; struct etnaviv_gpu *gpu; @@ -495,7 +487,7 @@ static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data, static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data, struct drm_file *file) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_pm_signal *args = data; struct etnaviv_gpu *gpu; @@ -554,17 +546,14 @@ static int etnaviv_bind(struct device *dev) struct drm_device *drm; int ret; - drm = drm_dev_alloc(&etnaviv_drm_driver, dev); - if (IS_ERR(drm)) - return PTR_ERR(drm); + priv = devm_drm_dev_alloc(dev, &etnaviv_drm_driver, + struct etnaviv_drm_private, drm); + if (IS_ERR(priv)) + return PTR_ERR(priv); - priv = etnaviv_alloc_private(dev); - if (IS_ERR(priv)) { - ret = PTR_ERR(priv); - goto out_put; - } + etnaviv_private_init(dev, priv); - drm->dev_private = priv; + drm = &priv->drm; dma_set_max_seg_size(dev, SZ_2G); @@ -585,9 +574,7 @@ static int etnaviv_bind(struct device *dev) out_unbind: component_unbind_all(dev, drm); out_free_priv: - etnaviv_free_private(priv); -out_put: - drm_dev_put(drm); + etnaviv_private_fini(priv); return ret; } @@ -595,17 +582,13 @@ static int etnaviv_bind(struct device *dev) static void etnaviv_unbind(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); - struct etnaviv_drm_private *priv = drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(drm); drm_dev_unregister(drm); component_unbind_all(dev, drm); - etnaviv_free_private(priv); - - drm->dev_private = NULL; - - drm_dev_put(drm); + etnaviv_private_fini(priv); } static const struct component_master_ops etnaviv_master_ops = { diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h index b3eb1662e90c..1f9b50b5a6aa 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h @@ -35,6 +35,7 @@ struct etnaviv_file_private { }; struct etnaviv_drm_private { + struct drm_device drm; int num_gpus; struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; gfp_t shm_gfp_mask; @@ -50,6 +51,12 @@ struct etnaviv_drm_private { struct list_head gem_list; }; +static inline struct etnaviv_drm_private * +to_etnaviv_priv(struct drm_device *ddev) +{ + return container_of(ddev, struct etnaviv_drm_private, drm); +} + int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index 71a6d2b1c80f..aa95a5e98374 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -486,7 +486,7 @@ static const struct etnaviv_gem_ops etnaviv_gem_shmem_ops = { void etnaviv_gem_free_object(struct drm_gem_object *obj) { struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj); - struct etnaviv_drm_private *priv = obj->dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(obj->dev); struct etnaviv_vram_mapping *mapping, *tmp; /* object should not be active */ @@ -517,7 +517,7 @@ void etnaviv_gem_free_object(struct drm_gem_object *obj) void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj); mutex_lock(&priv->gem_lock); @@ -584,7 +584,7 @@ static int etnaviv_gem_new_impl(struct drm_device *dev, u32 flags, int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, u32 size, u32 flags, u32 *handle) { - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_gem_object *obj = NULL; int ret; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 3d0f8d182506..6b40a39fb8cd 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -413,7 +413,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file) { struct etnaviv_file_private *ctx = file->driver_priv; - struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(dev); struct drm_etnaviv_gem_submit *args = data; struct drm_etnaviv_gem_submit_reloc *relocs; struct drm_etnaviv_gem_submit_pmr *pmrs; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 654bf2631755..a407c2c9e140 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -38,7 +38,7 @@ static const struct platform_device_id gpu_ids[] = { int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value) { - struct etnaviv_drm_private *priv = gpu->drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(gpu->drm); switch (param) { case ETNAVIV_PARAM_GPU_MODEL: @@ -801,7 +801,7 @@ static void etnaviv_gpu_hw_init(struct etnaviv_gpu *gpu) int etnaviv_gpu_init(struct etnaviv_gpu *gpu) { - struct etnaviv_drm_private *priv = gpu->drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(gpu->drm); dma_addr_t cmdbuf_paddr; int ret, i; @@ -1791,7 +1791,7 @@ static int etnaviv_gpu_bind(struct device *dev, struct device *master, void *data) { struct drm_device *drm = data; - struct etnaviv_drm_private *priv = drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(drm); struct etnaviv_gpu *gpu = dev_get_drvdata(dev); int ret; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index 1661d589bf3e..c38272868328 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -490,7 +490,7 @@ void etnaviv_iommu_dump(struct etnaviv_iommu_context *context, void *buf) int etnaviv_iommu_global_init(struct etnaviv_gpu *gpu) { enum etnaviv_iommu_version version = ETNAVIV_IOMMU_V1; - struct etnaviv_drm_private *priv = gpu->drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(gpu->drm); struct etnaviv_iommu_global *global; struct device *dev = gpu->drm->dev; @@ -550,7 +550,7 @@ int etnaviv_iommu_global_init(struct etnaviv_gpu *gpu) void etnaviv_iommu_global_fini(struct etnaviv_gpu *gpu) { - struct etnaviv_drm_private *priv = gpu->drm->dev_private; + struct etnaviv_drm_private *priv = to_etnaviv_priv(gpu->drm); struct etnaviv_iommu_global *global = priv->mmu_global; if (!global)