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[24.155.109.49]) by smtp.googlemail.com with ESMTPSA id u130sm4122676oib.56.2019.10.21.14.45.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Oct 2019 14:46:00 -0700 (PDT) From: Rob Herring To: dri-devel@lists.freedesktop.org Subject: [PATCH 4/6] drm/cma-helper: Support DRM_MODE_DUMB_KERNEL_MAP flag Date: Mon, 21 Oct 2019 16:45:48 -0500 Message-Id: <20191021214550.1461-5-robh@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191021214550.1461-1-robh@kernel.org> References: <20191021214550.1461-1-robh@kernel.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Neil Armstrong , David Airlie , Liviu Dudau , Laurent Pinchart , linux-amlogic@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, Yannick Fertre , Kevin Hilman , Xinwei Kong , Xinliang Liu , linux-rockchip@lists.infradead.org, Chen-Yu Tsai , Kieran Bingham , "James \(Qian\) Wang" , Alexandre Torgue , Chen Feng , linux-renesas-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, Matthias Brugger , Sean Paul , linux-arm-kernel@lists.infradead.org, Philippe Cornu , Vincent Abriou , Maxime Coquelin , Rongrong Zou Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add support in CMA helpers to handle callers specifying DRM_MODE_DUMB_KERNEL_MAP flag. Existing behavior is maintained with this change. drm_gem_cma_dumb_create() always creates a kernel mapping as before. drm_gem_cma_dumb_create_internal() lets the caller set the flags as desired. Therefore, update all the existing callers of drm_gem_cma_dumb_create_internal() to also set the DRM_MODE_DUMB_KERNEL_MAP flag. Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Cc: "James (Qian) Wang" Cc: Liviu Dudau Cc: Brian Starkey Cc: Neil Armstrong Cc: Kevin Hilman Cc: Laurent Pinchart Cc: Kieran Bingham Cc: Sandy Huang Cc: "Heiko Stübner" Cc: Yannick Fertre Cc: Philippe Cornu Cc: Benjamin Gaignard Cc: Vincent Abriou Cc: Maxime Coquelin Cc: Alexandre Torgue Cc: Chen-Yu Tsai Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-stm32@st-md-mailman.stormreply.com Signed-off-by: Rob Herring Reviewed-by: James Qian Wang (Arm Technology China) Reviewed-by: Neil Armstrong # for drm_gem_cma_helper and meson drm driver Reviewed-by: Laurent Pinchart --- .../gpu/drm/arm/display/komeda/komeda_kms.c | 1 + drivers/gpu/drm/arm/malidp_drv.c | 1 + drivers/gpu/drm/drm_gem_cma_helper.c | 48 +++++++++++-------- drivers/gpu/drm/meson/meson_drv.c | 1 + drivers/gpu/drm/rcar-du/rcar_du_kms.c | 1 + drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 1 + drivers/gpu/drm/stm/drv.c | 1 + drivers/gpu/drm/sun4i/sun4i_drv.c | 1 + 8 files changed, 36 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c index d49772de93e0..7cf0dc4cbfc1 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -31,6 +31,7 @@ static int komeda_gem_cma_dumb_create(struct drm_file *file, u32 pitch = DIV_ROUND_UP(args->width * args->bpp, 8); args->pitch = ALIGN(pitch, mdev->chip.bus_width); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file, dev, args); } diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 8a76315aaa0f..aeb1a779ecc1 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -465,6 +465,7 @@ static int malidp_dumb_create(struct drm_file *file_priv, u8 alignment = malidp_hw_get_pitch_align(malidp->dev, 1); args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), alignment); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file_priv, drm, args); } diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 4cebfe01e6ea..f91e9e8adeaf 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -78,21 +78,8 @@ __drm_gem_cma_create(struct drm_device *drm, size_t size) return ERR_PTR(ret); } -/** - * drm_gem_cma_create - allocate an object with the given size - * @drm: DRM device - * @size: size of the object to allocate - * - * This function creates a CMA GEM object and allocates a contiguous chunk of - * memory as backing store. The backing memory has the writecombine attribute - * set. - * - * Returns: - * A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative - * error code on failure. - */ -struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, - size_t size) +static struct drm_gem_cma_object * +drm_gem_cma_create_flags(struct drm_device *drm, size_t size, u32 flags) { struct drm_gem_cma_object *cma_obj; int ret; @@ -103,6 +90,9 @@ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, if (IS_ERR(cma_obj)) return cma_obj; + if (!(flags & DRM_MODE_DUMB_KERNEL_MAP)) + cma_obj->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING; + cma_obj->vaddr = dma_alloc_attrs(drm->dev, size, &cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN, cma_obj->dma_attrs); @@ -119,6 +109,25 @@ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, drm_gem_object_put_unlocked(&cma_obj->base); return ERR_PTR(ret); } + +/** + * drm_gem_cma_create - allocate an object with the given size + * @drm: DRM device + * @size: size of the object to allocate + * + * This function creates a CMA GEM object and allocates a contiguous chunk of + * memory as backing store. The backing memory has the writecombine attribute + * set. + * + * Returns: + * A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative + * error code on failure. + */ +struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, + size_t size) +{ + return drm_gem_cma_create_flags(drm, size, DRM_MODE_DUMB_KERNEL_MAP); +} EXPORT_SYMBOL_GPL(drm_gem_cma_create); /** @@ -139,14 +148,14 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_create); */ static struct drm_gem_cma_object * drm_gem_cma_create_with_handle(struct drm_file *file_priv, - struct drm_device *drm, size_t size, + struct drm_device *drm, size_t size, u32 flags, uint32_t *handle) { struct drm_gem_cma_object *cma_obj; struct drm_gem_object *gem_obj; int ret; - cma_obj = drm_gem_cma_create(drm, size); + cma_obj = drm_gem_cma_create_flags(drm, size, flags); if (IS_ERR(cma_obj)) return cma_obj; @@ -225,7 +234,7 @@ int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv, args->size = args->pitch * args->height; cma_obj = drm_gem_cma_create_with_handle(file_priv, drm, args->size, - &args->handle); + args->flags, &args->handle); return PTR_ERR_OR_ZERO(cma_obj); } EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create_internal); @@ -256,9 +265,10 @@ int drm_gem_cma_dumb_create(struct drm_file *file_priv, args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8); args->size = args->pitch * args->height; + args->flags = DRM_MODE_DUMB_KERNEL_MAP; cma_obj = drm_gem_cma_create_with_handle(file_priv, drm, args->size, - &args->handle); + args->flags, &args->handle); return PTR_ERR_OR_ZERO(cma_obj); } EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create); diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c index 397c33182f4f..1593518dcbe4 100644 --- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -81,6 +81,7 @@ static int meson_dumb_create(struct drm_file *file, struct drm_device *dev, */ args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), SZ_64); args->size = PAGE_ALIGN(args->pitch * args->height); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file, dev, args); } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index 2dc9caee8767..c9b1f298ce7e 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -299,6 +299,7 @@ int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, align = 16 * args->bpp / 8; args->pitch = roundup(min_pitch, align); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file, dev, args); } diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index 7582d0e6a60a..f09b9a035376 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -419,6 +419,7 @@ int rockchip_gem_dumb_create(struct drm_file *file_priv, * align to 64 bytes since Mali requires it. */ args->pitch = ALIGN(min_pitch, 64); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; args->size = args->pitch * args->height; rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size, diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c index 5a9f9aca8bc2..0f76a4ac95b3 100644 --- a/drivers/gpu/drm/stm/drv.c +++ b/drivers/gpu/drm/stm/drv.c @@ -47,6 +47,7 @@ static int stm_gem_cma_dumb_create(struct drm_file *file, */ args->pitch = roundup(min_pitch, 128); args->height = roundup(args->height, 4); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file, dev, args); } diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index a5757b11b730..f653a5d1e2d6 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -34,6 +34,7 @@ static int drm_sun4i_gem_dumb_create(struct drm_file *file_priv, { /* The hardware only allows even pitches for YUV buffers. */ args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8), 2); + args->flags = DRM_MODE_DUMB_KERNEL_MAP; return drm_gem_cma_dumb_create_internal(file_priv, drm, args); }