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drm/vmwgfx: Add a new interface for plane update on a display unit

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Add a new struct vmw_du_update_plane similar to vmw_kms_dirty which
represent the flow of operations needed to update a display unit from
surface or bo (blit a new framebuffer).

v2:
- Kernel doc correction.
- Rebase.

v3: Rebase to new resource validation.

Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
This commit is contained in:
Deepak Rawat
2018-07-11 15:42:45 -07:00
committed by Thomas Hellstrom
parent b9fc5e01d1
commit e41774c08e
2 changed files with 233 additions and 0 deletions
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111
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
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@@ -33,7 +33,101 @@
#include <drm/drm_encoder.h>
#include "vmwgfx_drv.h"
/**
* struct vmw_du_update_plane - Closure structure for vmw_du_helper_plane_update
* @plane: Plane which is being updated.
* @old_state: Old state of plane.
* @dev_priv: Device private.
* @du: Display unit on which to update the plane.
* @vfb: Framebuffer which is blitted to display unit.
* @out_fence: Out fence for resource finish.
* @mutex: The mutex used to protect resource reservation.
* @cpu_blit: True if need cpu blit.
* @intr: Whether to perform waits interruptible if possible.
*
* This structure loosely represent the set of operations needed to perform a
* plane update on a display unit. Implementer will define that functionality
* according to the function callbacks for this structure. In brief it involves
* surface/buffer object validation, populate FIFO commands and command
* submission to the device.
*/
struct vmw_du_update_plane {
/**
* @calc_fifo_size: Calculate fifo size.
*
* Determine fifo size for the commands needed for update. The number of
* damage clips on display unit @num_hits will be passed to allocate
* sufficient fifo space.
*
* Return: Fifo size needed
*/
uint32_t (*calc_fifo_size)(struct vmw_du_update_plane *update,
uint32_t num_hits);
/**
* @post_prepare: Populate fifo for resource preparation.
*
* Some surface resource or buffer object need some extra cmd submission
* like update GB image for proxy surface and define a GMRFB for screen
* object. That should should be done here as this callback will be
* called after FIFO allocation with the address of command buufer.
*
* This callback is optional.
*
* Return: Size of commands populated to command buffer.
*/
uint32_t (*post_prepare)(struct vmw_du_update_plane *update, void *cmd);
/**
* @pre_clip: Populate fifo before clip.
*
* This is where pre clip related command should be populated like
* surface copy/DMA, etc.
*
* This callback is optional.
*
* Return: Size of commands populated to command buffer.
*/
uint32_t (*pre_clip)(struct vmw_du_update_plane *update, void *cmd,
uint32_t num_hits);
/**
* @clip: Populate fifo for clip.
*
* This is where to populate clips for surface copy/dma or blit commands
* if needed. This will be called times have damage in display unit,
* which is one if doing full update. @clip is the damage in destination
* coordinates which is crtc/DU and @src_x, @src_y is damage clip src in
* framebuffer coordinate.
*
* This callback is optional.
*
* Return: Size of commands populated to command buffer.
*/
uint32_t (*clip)(struct vmw_du_update_plane *update, void *cmd,
struct drm_rect *clip, uint32_t src_x, uint32_t src_y);
/**
* @post_clip: Populate fifo after clip.
*
* This is where to populate display unit update commands or blit
* commands.
*
* Return: Size of commands populated to command buffer.
*/
uint32_t (*post_clip)(struct vmw_du_update_plane *update, void *cmd,
struct drm_rect *bb);
struct drm_plane *plane;
struct drm_plane_state *old_state;
struct vmw_private *dev_priv;
struct vmw_display_unit *du;
struct vmw_framebuffer *vfb;
struct vmw_fence_obj **out_fence;
struct mutex *mutex;
bool cpu_blit;
bool intr;
};
/**
* struct vmw_kms_dirty - closure structure for the vmw_kms_helper_dirty
@@ -458,4 +552,21 @@ int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
int vmw_kms_set_config(struct drm_mode_set *set,
struct drm_modeset_acquire_ctx *ctx);
int vmw_du_helper_plane_update(struct vmw_du_update_plane *update);
/**
* vmw_du_translate_to_crtc - Translate a rect from framebuffer to crtc
* @state: Plane state.
* @r: Rectangle to translate.
*/
static inline void vmw_du_translate_to_crtc(struct drm_plane_state *state,
struct drm_rect *r)
{
int translate_crtc_x = -((state->src_x >> 16) - state->crtc_x);
int translate_crtc_y = -((state->src_y >> 16) - state->crtc_y);
drm_rect_translate(r, translate_crtc_x, translate_crtc_y);
}
#endif