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t=1623237615; h=from:from:reply-to: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=nWjkH2kYcjIAyzh3jD5msWYfe6YCZBpfuuajwa0m0a0=; b=IAtem6UO8ka5vH8Cg0PiSS22RvapW/ocX82RQpxPce0FBd+pNl5jb95flgADByK2rDHLNJ TgWWF4pzyQr9HgUSWj/A+2DROM9qvqfJkHjg5jrOJR73IgD07UeB7RsvawTyl0Rdu6+TSo b6c+g9ojK56kuA4P6Kt5boUu456N7KU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1623237615; h=from:from:reply-to: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=nWjkH2kYcjIAyzh3jD5msWYfe6YCZBpfuuajwa0m0a0=; b=lXxXVlzUjbUFpw5VOvZWcN4FvwlBG+8u52/vI+U5dqir13Xr1GeRq2LFg+XWZsi3Av4+Y3 8D6XS5wGDQOOuBBA== From: Thomas Zimmermann To: daniel@ffwll.ch, mripard@kernel.org, maarten.lankhorst@linux.intel.com, l.stach@pengutronix.de, linux+etnaviv@armlinux.org.uk, christian.gmeiner@gmail.com, inki.dae@samsung.com, jy0922.shim@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, krzysztof.kozlowski@canonical.com, chunkuang.hu@kernel.org, p.zabel@pengutronix.de, matthias.bgg@gmail.com, robdclark@gmail.com, sean@poorly.run, airlied@redhat.com, kraxel@redhat.com, hjc@rock-chips.com, heiko@sntech.de, oleksandr_andrushchenko@epam.com, sumit.semwal@linaro.org, christian.koenig@amd.com Cc: dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, virtualization@lists.linux-foundation.org, spice-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, xen-devel@lists.xenproject.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Thomas Zimmermann Subject: [PATCH 2/9] drm/exynox: Implement mmap as GEM object function Date: Wed, 9 Jun 2021 13:20:05 +0200 Message-Id: <20210609112012.10019-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210609112012.10019-1-tzimmermann@suse.de> References: <20210609112012.10019-1-tzimmermann@suse.de> MIME-Version: 1.0 Moving the driver-specific mmap code into a GEM object function allows for using DRM helpers for various mmap callbacks. The respective exynos functions are being removed. The file_operations structure exynos_drm_driver_fops is now being created by the helper macro DEFINE_DRM_GEM_FOPS(). Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 13 ++----- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 20 ++--------- drivers/gpu/drm/exynos/exynos_drm_gem.c | 43 +++++------------------ drivers/gpu/drm/exynos/exynos_drm_gem.h | 5 --- 4 files changed, 13 insertions(+), 68 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index e60257f1f24b..1d46751cad02 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -102,16 +102,7 @@ static const struct drm_ioctl_desc exynos_ioctls[] = { DRM_RENDER_ALLOW), }; -static const struct file_operations exynos_drm_driver_fops = { - .owner = THIS_MODULE, - .open = drm_open, - .mmap = exynos_drm_gem_mmap, - .poll = drm_poll, - .read = drm_read, - .unlocked_ioctl = drm_ioctl, - .compat_ioctl = drm_compat_ioctl, - .release = drm_release, -}; +DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops); static const struct drm_driver exynos_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM @@ -124,7 +115,7 @@ static const struct drm_driver exynos_drm_driver = { .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = exynos_drm_gem_prime_import, .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, - .gem_prime_mmap = exynos_drm_gem_prime_mmap, + .gem_prime_mmap = drm_gem_prime_mmap, .ioctls = exynos_ioctls, .num_ioctls = ARRAY_SIZE(exynos_ioctls), .fops = &exynos_drm_driver_fops, diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index 5147f5929be7..02c97b9ca926 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -39,25 +40,8 @@ static int exynos_drm_fb_mmap(struct fb_info *info, struct drm_fb_helper *helper = info->par; struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper); struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem; - unsigned long vm_size; - int ret; - - vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; - - vm_size = vma->vm_end - vma->vm_start; - - if (vm_size > exynos_gem->size) - return -EINVAL; - ret = dma_mmap_attrs(to_dma_dev(helper->dev), vma, exynos_gem->cookie, - exynos_gem->dma_addr, exynos_gem->size, - exynos_gem->dma_attrs); - if (ret < 0) { - DRM_DEV_ERROR(to_dma_dev(helper->dev), "failed to mmap.\n"); - return ret; - } - - return 0; + return drm_gem_prime_mmap(&exynos_gem->base, vma); } static const struct fb_ops exynos_drm_fb_ops = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 4396224227d1..c4b63902ee7a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -17,6 +17,8 @@ #include "exynos_drm_drv.h" #include "exynos_drm_gem.h" +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); + static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool kvmap) { struct drm_device *dev = exynos_gem->base.dev; @@ -135,6 +137,7 @@ static const struct vm_operations_struct exynos_drm_gem_vm_ops = { static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = { .free = exynos_drm_gem_free_object, .get_sg_table = exynos_drm_gem_prime_get_sg_table, + .mmap = exynos_drm_gem_mmap, .vm_ops = &exynos_drm_gem_vm_ops, }; @@ -354,12 +357,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, return 0; } -static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj, - struct vm_area_struct *vma) +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj); int ret; + if (obj->import_attach) + return dma_buf_mmap(obj->dma_buf, vma, 0); + + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; + DRM_DEV_DEBUG_KMS(to_dma_dev(obj->dev), "flags = 0x%x\n", exynos_gem->flags); @@ -385,26 +392,6 @@ static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj, return ret; } -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_gem_object *obj; - int ret; - - /* set vm_area_struct. */ - ret = drm_gem_mmap(filp, vma); - if (ret < 0) { - DRM_ERROR("failed to mmap.\n"); - return ret; - } - - obj = vma->vm_private_data; - - if (obj->import_attach) - return dma_buf_mmap(obj->dma_buf, vma, 0); - - return exynos_drm_gem_mmap_obj(obj, vma); -} - /* low-level interface prime helpers */ struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) @@ -466,15 +453,3 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, exynos_gem->sgt = sgt; return &exynos_gem->base; } - -int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, - struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap_obj(obj, obj->size, vma); - if (ret < 0) - return ret; - - return exynos_drm_gem_mmap_obj(obj, vma); -} diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h index a23272fb96fb..79d7e1a87419 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h @@ -96,9 +96,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args); -/* set vm_flags and we can change the vm attribute to other one at here. */ -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); - /* low-level interface prime helpers */ struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf); @@ -107,7 +104,5 @@ struct drm_gem_object * exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt); -int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, - struct vm_area_struct *vma); #endif