On Mon, Apr 29, 2019 at 04:43:37PM +0200, Thomas Zimmermann wrote:
> The mgag200 driver establishes several memory mappings for frame buffers
> and cursors. This patch converts the driver to use the equivalent
> drm_gem_vram_kmap() functions. It removes the dependencies on TTM
> and cleans up the code.

s-o-b missing here.
-Daniel

> ---
>  drivers/gpu/drm/mgag200/mgag200_cursor.c | 35 +++++++++++-------------
>  drivers/gpu/drm/mgag200/mgag200_drv.h    |  1 -
>  drivers/gpu/drm/mgag200/mgag200_fb.c     | 22 +++++++++------
>  drivers/gpu/drm/mgag200/mgag200_mode.c   |  9 ++++--
>  4 files changed, 36 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mgag200/mgag200_cursor.c 
> b/drivers/gpu/drm/mgag200/mgag200_cursor.c
> index cca3922f9f67..6c1a9d724d85 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_cursor.c
> +++ b/drivers/gpu/drm/mgag200/mgag200_cursor.c
> @@ -43,6 +43,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
>       struct drm_gem_object *obj;
>       struct drm_gem_vram_object *gbo = NULL;
>       int ret = 0;
> +     u8 *src, *dst;
>       unsigned int i, row, col;
>       uint32_t colour_set[16];
>       uint32_t *next_space = &colour_set[0];
> @@ -126,18 +127,17 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
>               dev_err(&dev->pdev->dev, "failed to reserve user bo\n");
>               goto out1;
>       }
> -     if (!gbo->kmap.virtual) {
> -             ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &gbo->kmap);
> -             if (ret) {
> -                     dev_err(&dev->pdev->dev, "failed to kmap user buffer 
> updates\n");
> -                     goto out2;
> -             }
> +     src = drm_gem_vram_kmap(gbo, true, NULL);
> +     if (IS_ERR(src)) {
> +             ret = PTR_ERR(src);
> +             dev_err(&dev->pdev->dev, "failed to kmap user buffer 
> updates\n");
> +             goto out2;
>       }
>  
>       memset(&colour_set[0], 0, sizeof(uint32_t)*16);
>       /* width*height*4 = 16384 */
>       for (i = 0; i < 16384; i += 4) {
> -             this_colour = ioread32(gbo->kmap.virtual + i);
> +             this_colour = ioread32(src + i);
>               /* No transparency */
>               if (this_colour>>24 != 0xff &&
>                       this_colour>>24 != 0x0) {
> @@ -189,21 +189,18 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
>       }
>  
>       /* Map up-coming buffer to write colour indices */
> -     if (!pixels_prev->kmap.virtual) {
> -             ret = ttm_bo_kmap(&pixels_prev->bo, 0,
> -                               pixels_prev->bo.num_pages,
> -                               &pixels_prev->kmap);
> -             if (ret) {
> -                     dev_err(&dev->pdev->dev, "failed to kmap cursor 
> updates\n");
> -                     goto out3;
> -             }
> +     dst = drm_gem_vram_kmap(pixels_prev, true, NULL);
> +     if (IS_ERR(dst)) {
> +             ret = PTR_ERR(dst);
> +             dev_err(&dev->pdev->dev, "failed to kmap cursor updates\n");
> +             goto out3;
>       }
>  
>       /* now write colour indices into hardware cursor buffer */
>       for (row = 0; row < 64; row++) {
>               memset(&this_row[0], 0, 48);
>               for (col = 0; col < 64; col++) {
> -                     this_colour = ioread32(gbo->kmap.virtual + 4*(col + 
> 64*row));
> +                     this_colour = ioread32(src + 4*(col + 64*row));
>                       /* write transparent pixels */
>                       if (this_colour>>24 == 0x0) {
>                               this_row[47 - col/8] |= 0x80>>(col%8);
> @@ -221,7 +218,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
>                               }
>                       }
>               }
> -             memcpy_toio(pixels_prev->kmap.virtual + row*48, &this_row[0], 
> 48);
> +             memcpy_toio(dst + row*48, &this_row[0], 48);
>       }
>  
>       /* Program gpu address of cursor buffer */
> @@ -247,9 +244,9 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
>       }
>       ret = 0;
>  
> -     ttm_bo_kunmap(&pixels_prev->kmap);
> +     drm_gem_vram_kunmap(pixels_prev);
>   out3:
> -     ttm_bo_kunmap(&gbo->kmap);
> +     drm_gem_vram_kunmap(gbo);
>   out2:
>       drm_gem_vram_unreserve(gbo);
>   out1:
> diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h 
> b/drivers/gpu/drm/mgag200/mgag200_drv.h
> index 16ce6b338dce..6180acbca7ca 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_drv.h
> +++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
> @@ -115,7 +115,6 @@ struct mga_fbdev {
>       struct mga_framebuffer mfb;
>       void *sysram;
>       int size;
> -     struct ttm_bo_kmap_obj mapping;
>       int x1, y1, x2, y2; /* dirty rect */
>       spinlock_t dirty_lock;
>  };
> diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c 
> b/drivers/gpu/drm/mgag200/mgag200_fb.c
> index 508ec2dddbba..7c457dad5d9e 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_fb.c
> +++ b/drivers/gpu/drm/mgag200/mgag200_fb.c
> @@ -27,6 +27,7 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev,
>       int src_offset, dst_offset;
>       int bpp = mfbdev->mfb.base.format->cpp[0];
>       int ret = -EBUSY;
> +     u8 *dst;
>       bool unmap = false;
>       bool store_for_later = false;
>       int x2, y2;
> @@ -75,24 +76,29 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev,
>       mfbdev->x2 = mfbdev->y2 = 0;
>       spin_unlock_irqrestore(&mfbdev->dirty_lock, flags);
>  
> -     if (!gbo->kmap.virtual) {
> -             ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &gbo->kmap);
> -             if (ret) {
> +     dst = drm_gem_vram_kmap(gbo, false, NULL);
> +     if (IS_ERR(dst)) {
> +             DRM_ERROR("failed to kmap fb updates\n");
> +             goto out;
> +     } else if (!dst) {
> +             dst = drm_gem_vram_kmap(gbo, true, NULL);
> +             if (IS_ERR(dst)) {
>                       DRM_ERROR("failed to kmap fb updates\n");
> -                     drm_gem_vram_unreserve(gbo);
> -                     return;
> +                     goto out;
>               }
>               unmap = true;
>       }
> +
>       for (i = y; i <= y2; i++) {
>               /* assume equal stride for now */
>               src_offset = dst_offset = i * mfbdev->mfb.base.pitches[0] + (x 
> * bpp);
> -             memcpy_toio(gbo->kmap.virtual + src_offset, mfbdev->sysram + 
> src_offset, (x2 - x + 1) * bpp);
> -
> +             memcpy_toio(dst + dst_offset, mfbdev->sysram + src_offset, (x2 
> - x + 1) * bpp);
>       }
> +
>       if (unmap)
> -             ttm_bo_kunmap(&gbo->kmap);
> +             drm_gem_vram_kunmap(gbo);
>  
> +out:
>       drm_gem_vram_unreserve(gbo);
>  }
>  
> diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c 
> b/drivers/gpu/drm/mgag200/mgag200_mode.c
> index ddec2c485381..769ace139377 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_mode.c
> +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
> @@ -870,6 +870,7 @@ static int mga_crtc_do_set_base(struct drm_crtc *crtc,
>       struct drm_gem_vram_object *gbo;
>       int ret;
>       s64 gpu_addr;
> +     void* base;
>  
>       /* push the previous fb to system ram */
>       if (!atomic && fb) {
> @@ -902,11 +903,13 @@ static int mga_crtc_do_set_base(struct drm_crtc *crtc,
>  
>       if (&mdev->mfbdev->mfb == mga_fb) {
>               /* if pushing console in kmap it */
> -             ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, &gbo->kmap);
> -             if (ret)
> +             base = drm_gem_vram_kmap(gbo, true, NULL);
> +             if (IS_ERR(base)) {
> +                     ret = PTR_ERR(base);
>                       DRM_ERROR("failed to kmap fbcon\n");
> -
> +             }
>       }
> +
>       drm_gem_vram_unreserve(gbo);
>  
>       mga_set_start_address(crtc, (u32)gpu_addr);
> -- 
> 2.21.0
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Reply via email to