From f9055e74f8976e47ccd81d7988cb491b5dc75339 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 6 Sep 2018 20:01:44 +0100 Subject: [PATCH] drm/i915/overlay: Use the ioctl parameters directly MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The user parameters to put_image are not copied back to userspace (DRM_IOW), and so we can modify the ioctl parameters (having already been copied to a temporary kernel struct) directly and use those in place, avoiding another temporary malloc and lots of manual copying. Signed-off-by: Chris Wilson Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20180906190144.1272-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_overlay.c | 147 +++++++++++++---------------------- 1 file changed, 54 insertions(+), 93 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c index 443dfae..72eb7e4 100644 --- a/drivers/gpu/drm/i915/intel_overlay.c +++ b/drivers/gpu/drm/i915/intel_overlay.c @@ -487,23 +487,6 @@ void intel_overlay_reset(struct drm_i915_private *dev_priv) overlay->active = false; } -struct put_image_params { - int format; - short dst_x; - short dst_y; - short dst_w; - short dst_h; - short src_w; - short src_scan_h; - short src_scan_w; - short src_h; - short stride_Y; - short stride_UV; - int offset_Y; - int offset_U; - int offset_V; -}; - static int packed_depth_bytes(u32 format) { switch (format & I915_OVERLAY_DEPTH_MASK) { @@ -618,25 +601,25 @@ static void update_polyphase_filter(struct overlay_registers __iomem *regs) static bool update_scaling_factors(struct intel_overlay *overlay, struct overlay_registers __iomem *regs, - struct put_image_params *params) + struct drm_intel_overlay_put_image *params) { /* fixed point with a 12 bit shift */ u32 xscale, yscale, xscale_UV, yscale_UV; #define FP_SHIFT 12 #define FRACT_MASK 0xfff bool scale_changed = false; - int uv_hscale = uv_hsubsampling(params->format); - int uv_vscale = uv_vsubsampling(params->format); + int uv_hscale = uv_hsubsampling(params->flags); + int uv_vscale = uv_vsubsampling(params->flags); - if (params->dst_w > 1) - xscale = ((params->src_scan_w - 1) << FP_SHIFT) - /(params->dst_w); + if (params->dst_width > 1) + xscale = ((params->src_scan_width - 1) << FP_SHIFT) / + params->dst_width; else xscale = 1 << FP_SHIFT; - if (params->dst_h > 1) - yscale = ((params->src_scan_h - 1) << FP_SHIFT) - /(params->dst_h); + if (params->dst_height > 1) + yscale = ((params->src_scan_height - 1) << FP_SHIFT) / + params->dst_height; else yscale = 1 << FP_SHIFT; @@ -713,12 +696,12 @@ static void update_colorkey(struct intel_overlay *overlay, iowrite32(flags, ®s->DCLRKM); } -static u32 overlay_cmd_reg(struct put_image_params *params) +static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params) { u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0; - if (params->format & I915_OVERLAY_YUV_PLANAR) { - switch (params->format & I915_OVERLAY_DEPTH_MASK) { + if (params->flags & I915_OVERLAY_YUV_PLANAR) { + switch (params->flags & I915_OVERLAY_DEPTH_MASK) { case I915_OVERLAY_YUV422: cmd |= OCMD_YUV_422_PLANAR; break; @@ -731,7 +714,7 @@ static u32 overlay_cmd_reg(struct put_image_params *params) break; } } else { /* YUV packed */ - switch (params->format & I915_OVERLAY_DEPTH_MASK) { + switch (params->flags & I915_OVERLAY_DEPTH_MASK) { case I915_OVERLAY_YUV422: cmd |= OCMD_YUV_422_PACKED; break; @@ -740,7 +723,7 @@ static u32 overlay_cmd_reg(struct put_image_params *params) break; } - switch (params->format & I915_OVERLAY_SWAP_MASK) { + switch (params->flags & I915_OVERLAY_SWAP_MASK) { case I915_OVERLAY_NO_SWAP: break; case I915_OVERLAY_UV_SWAP: @@ -760,7 +743,7 @@ static u32 overlay_cmd_reg(struct put_image_params *params) static int intel_overlay_do_put_image(struct intel_overlay *overlay, struct drm_i915_gem_object *new_bo, - struct put_image_params *params) + struct drm_intel_overlay_put_image *params) { struct overlay_registers __iomem *regs = overlay->regs; struct drm_i915_private *dev_priv = overlay->i915; @@ -806,35 +789,40 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay, goto out_unpin; } - iowrite32((params->dst_y << 16) | params->dst_x, ®s->DWINPOS); - iowrite32((params->dst_h << 16) | params->dst_w, ®s->DWINSZ); + iowrite32(params->dst_y << 16 | params->dst_x, ®s->DWINPOS); + iowrite32(params->dst_height << 16 | params->dst_width, ®s->DWINSZ); - if (params->format & I915_OVERLAY_YUV_PACKED) - tmp_width = packed_width_bytes(params->format, params->src_w); + if (params->flags & I915_OVERLAY_YUV_PACKED) + tmp_width = packed_width_bytes(params->flags, + params->src_width); else - tmp_width = params->src_w; + tmp_width = params->src_width; - swidth = params->src_w; + swidth = params->src_width; swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width); - sheight = params->src_h; + sheight = params->src_height; iowrite32(i915_ggtt_offset(vma) + params->offset_Y, ®s->OBUF_0Y); ostride = params->stride_Y; - if (params->format & I915_OVERLAY_YUV_PLANAR) { - int uv_hscale = uv_hsubsampling(params->format); - int uv_vscale = uv_vsubsampling(params->format); + if (params->flags & I915_OVERLAY_YUV_PLANAR) { + int uv_hscale = uv_hsubsampling(params->flags); + int uv_vscale = uv_vsubsampling(params->flags); u32 tmp_U, tmp_V; - swidth |= (params->src_w/uv_hscale) << 16; + + swidth |= (params->src_width / uv_hscale) << 16; + sheight |= (params->src_height / uv_vscale) << 16; + tmp_U = calc_swidthsw(dev_priv, params->offset_U, - params->src_w/uv_hscale); + params->src_width / uv_hscale); tmp_V = calc_swidthsw(dev_priv, params->offset_V, - params->src_w/uv_hscale); - swidthsw |= max_t(u32, tmp_U, tmp_V) << 16; - sheight |= (params->src_h/uv_vscale) << 16; + params->src_width / uv_hscale); + swidthsw |= max(tmp_U, tmp_V) << 16; + iowrite32(i915_ggtt_offset(vma) + params->offset_U, ®s->OBUF_0U); iowrite32(i915_ggtt_offset(vma) + params->offset_V, ®s->OBUF_0V); + ostride |= params->stride_UV << 16; } @@ -938,15 +926,16 @@ static int check_overlay_dst(struct intel_overlay *overlay, return -EINVAL; } -static int check_overlay_scaling(struct put_image_params *rec) +static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec) { u32 tmp; /* downscaling limit is 8.0 */ - tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16; + tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16; if (tmp > 7) return -EINVAL; - tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16; + + tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16; if (tmp > 7) return -EINVAL; @@ -1067,13 +1056,12 @@ static int check_overlay_src(struct drm_i915_private *dev_priv, int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { - struct drm_intel_overlay_put_image *put_image_rec = data; + struct drm_intel_overlay_put_image *params = data; struct drm_i915_private *dev_priv = to_i915(dev); struct intel_overlay *overlay; struct drm_crtc *drmmode_crtc; struct intel_crtc *crtc; struct drm_i915_gem_object *new_bo; - struct put_image_params *params; int ret; overlay = dev_priv->overlay; @@ -1082,7 +1070,7 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, return -ENODEV; } - if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) { + if (!(params->flags & I915_OVERLAY_ENABLE)) { drm_modeset_lock_all(dev); mutex_lock(&dev->struct_mutex); @@ -1094,22 +1082,14 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, return ret; } - params = kmalloc(sizeof(*params), GFP_KERNEL); - if (!params) - return -ENOMEM; - - drmmode_crtc = drm_crtc_find(dev, file_priv, put_image_rec->crtc_id); - if (!drmmode_crtc) { - ret = -ENOENT; - goto out_free; - } + drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id); + if (!drmmode_crtc) + return -ENOENT; crtc = to_intel_crtc(drmmode_crtc); - new_bo = i915_gem_object_lookup(file_priv, put_image_rec->bo_handle); - if (!new_bo) { - ret = -ENOENT; - goto out_free; - } + new_bo = i915_gem_object_lookup(file_priv, params->bo_handle); + if (!new_bo) + return -ENOENT; drm_modeset_lock_all(dev); mutex_lock(&dev->struct_mutex); @@ -1145,42 +1125,27 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, overlay->pfit_active = false; } - ret = check_overlay_dst(overlay, put_image_rec); + ret = check_overlay_dst(overlay, params); if (ret != 0) goto out_unlock; if (overlay->pfit_active) { - params->dst_y = ((((u32)put_image_rec->dst_y) << 12) / + params->dst_y = (((u32)params->dst_y << 12) / overlay->pfit_vscale_ratio); /* shifting right rounds downwards, so add 1 */ - params->dst_h = ((((u32)put_image_rec->dst_height) << 12) / + params->dst_height = (((u32)params->dst_height << 12) / overlay->pfit_vscale_ratio) + 1; - } else { - params->dst_y = put_image_rec->dst_y; - params->dst_h = put_image_rec->dst_height; } - params->dst_x = put_image_rec->dst_x; - params->dst_w = put_image_rec->dst_width; - - params->src_w = put_image_rec->src_width; - params->src_h = put_image_rec->src_height; - params->src_scan_w = put_image_rec->src_scan_width; - params->src_scan_h = put_image_rec->src_scan_height; - if (params->src_scan_h > params->src_h || - params->src_scan_w > params->src_w) { + + if (params->src_scan_height > params->src_height || + params->src_scan_width > params->src_width) { ret = -EINVAL; goto out_unlock; } - ret = check_overlay_src(dev_priv, put_image_rec, new_bo); + ret = check_overlay_src(dev_priv, params, new_bo); if (ret != 0) goto out_unlock; - params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK; - params->stride_Y = put_image_rec->stride_Y; - params->stride_UV = put_image_rec->stride_UV; - params->offset_Y = put_image_rec->offset_Y; - params->offset_U = put_image_rec->offset_U; - params->offset_V = put_image_rec->offset_V; /* Check scaling after src size to prevent a divide-by-zero. */ ret = check_overlay_scaling(params); @@ -1195,16 +1160,12 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, drm_modeset_unlock_all(dev); i915_gem_object_put(new_bo); - kfree(params); - return 0; out_unlock: mutex_unlock(&dev->struct_mutex); drm_modeset_unlock_all(dev); i915_gem_object_put(new_bo); -out_free: - kfree(params); return ret; } -- 2.7.4