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-rw-r--r--drivers/gpu/drm/mgag200/mgag200_cursor.c165
-rw-r--r--drivers/gpu/drm/mgag200/mgag200_drv.h3
-rw-r--r--drivers/gpu/drm/mgag200/mgag200_main.c4
3 files changed, 69 insertions, 103 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_cursor.c b/drivers/gpu/drm/mgag200/mgag200_cursor.c
index 06a8c076cb33..8af2918da6a2 100644
--- a/drivers/gpu/drm/mgag200/mgag200_cursor.c
+++ b/drivers/gpu/drm/mgag200/mgag200_cursor.c
@@ -22,10 +22,9 @@ static void mga_hide_cursor(struct mga_device *mdev)
{
WREG8(MGA_CURPOSXL, 0);
WREG8(MGA_CURPOSXH, 0);
- if (mdev->cursor.pixels_1->pin_count)
- drm_gem_vram_unpin_locked(mdev->cursor.pixels_1);
- if (mdev->cursor.pixels_2->pin_count)
- drm_gem_vram_unpin_locked(mdev->cursor.pixels_2);
+ if (mdev->cursor.pixels_current)
+ drm_gem_vram_unpin(mdev->cursor.pixels_current);
+ mdev->cursor.pixels_current = NULL;
}
int mga_crtc_cursor_set(struct drm_crtc *crtc,
@@ -39,7 +38,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
struct drm_gem_vram_object *pixels_1 = mdev->cursor.pixels_1;
struct drm_gem_vram_object *pixels_2 = mdev->cursor.pixels_2;
struct drm_gem_vram_object *pixels_current = mdev->cursor.pixels_current;
- struct drm_gem_vram_object *pixels_prev = mdev->cursor.pixels_prev;
+ struct drm_gem_vram_object *pixels_next;
struct drm_gem_object *obj;
struct drm_gem_vram_object *gbo = NULL;
int ret = 0;
@@ -52,6 +51,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
bool found = false;
int colour_count = 0;
s64 gpu_addr;
+ u64 dst_gpu;
u8 reg_index;
u8 this_row[48];
@@ -61,80 +61,66 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
return -ENOTSUPP; /* Didn't allocate space for cursors */
}
- if ((width != 64 || height != 64) && handle) {
- WREG8(MGA_CURPOSXL, 0);
- WREG8(MGA_CURPOSXH, 0);
- return -EINVAL;
+ if (WARN_ON(pixels_current &&
+ pixels_1 != pixels_current &&
+ pixels_2 != pixels_current)) {
+ return -ENOTSUPP; /* inconsistent state */
}
- BUG_ON(pixels_1 != pixels_current && pixels_1 != pixels_prev);
- BUG_ON(pixels_2 != pixels_current && pixels_2 != pixels_prev);
- BUG_ON(pixels_current == pixels_prev);
-
if (!handle || !file_priv) {
mga_hide_cursor(mdev);
return 0;
}
- obj = drm_gem_object_lookup(file_priv, handle);
- if (!obj)
- return -ENOENT;
-
- ret = drm_gem_vram_lock(pixels_1, true);
- if (ret) {
+ if (width != 64 || height != 64) {
WREG8(MGA_CURPOSXL, 0);
WREG8(MGA_CURPOSXH, 0);
- goto out_unref;
- }
- ret = drm_gem_vram_lock(pixels_2, true);
- if (ret) {
- WREG8(MGA_CURPOSXL, 0);
- WREG8(MGA_CURPOSXH, 0);
- drm_gem_vram_unlock(pixels_1);
- goto out_unlock1;
+ return -EINVAL;
}
- /* Move cursor buffers into VRAM if they aren't already */
- if (!pixels_1->pin_count) {
- ret = drm_gem_vram_pin_locked(pixels_1,
- DRM_GEM_VRAM_PL_FLAG_VRAM);
- if (ret)
- goto out1;
- gpu_addr = drm_gem_vram_offset(pixels_1);
- if (gpu_addr < 0) {
- drm_gem_vram_unpin_locked(pixels_1);
- goto out1;
- }
- mdev->cursor.pixels_1_gpu_addr = gpu_addr;
- }
- if (!pixels_2->pin_count) {
- ret = drm_gem_vram_pin_locked(pixels_2,
- DRM_GEM_VRAM_PL_FLAG_VRAM);
- if (ret) {
- drm_gem_vram_unpin_locked(pixels_1);
- goto out1;
- }
- gpu_addr = drm_gem_vram_offset(pixels_2);
- if (gpu_addr < 0) {
- drm_gem_vram_unpin_locked(pixels_1);
- drm_gem_vram_unpin_locked(pixels_2);
- goto out1;
- }
- mdev->cursor.pixels_2_gpu_addr = gpu_addr;
- }
+ if (pixels_current == pixels_1)
+ pixels_next = pixels_2;
+ else
+ pixels_next = pixels_1;
+ obj = drm_gem_object_lookup(file_priv, handle);
+ if (!obj)
+ return -ENOENT;
gbo = drm_gem_vram_of_gem(obj);
- ret = drm_gem_vram_lock(gbo, true);
+ ret = drm_gem_vram_pin(gbo, 0);
if (ret) {
dev_err(&dev->pdev->dev, "failed to lock user bo\n");
- goto out1;
+ goto err_drm_gem_object_put_unlocked;
}
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;
+ dev_err(&dev->pdev->dev,
+ "failed to kmap user buffer updates\n");
+ goto err_drm_gem_vram_unpin_src;
+ }
+
+ /* Pin and map up-coming buffer to write colour indices */
+ ret = drm_gem_vram_pin(pixels_next, 0);
+ if (ret)
+ dev_err(&dev->pdev->dev,
+ "failed to pin cursor buffer: %d\n", ret);
+ goto err_drm_gem_vram_kunmap_src;
+ dst = drm_gem_vram_kmap(pixels_next, true, NULL);
+ if (IS_ERR(dst)) {
+ ret = PTR_ERR(dst);
+ dev_err(&dev->pdev->dev,
+ "failed to kmap cursor updates: %d\n", ret);
+ goto err_drm_gem_vram_unpin_dst;
+ }
+ gpu_addr = drm_gem_vram_offset(pixels_2);
+ if (gpu_addr < 0) {
+ ret = (int)gpu_addr;
+ dev_err(&dev->pdev->dev,
+ "failed to get cursor scanout address: %d\n", ret);
+ goto err_drm_gem_vram_kunmap_dst;
}
+ dst_gpu = (u64)gpu_addr;
memset(&colour_set[0], 0, sizeof(uint32_t)*16);
/* width*height*4 = 16384 */
@@ -149,7 +135,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
warn_transparent = false; /* Only tell the user once. */
}
ret = -EINVAL;
- goto out3;
+ goto err_drm_gem_vram_kunmap_dst;
}
/* Don't need to store transparent pixels as colours */
if (this_colour>>24 == 0x0)
@@ -171,7 +157,7 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
warn_palette = false; /* Only tell the user once. */
}
ret = -EINVAL;
- goto out3;
+ goto err_drm_gem_vram_kunmap_dst;
}
*next_space = this_colour;
next_space++;
@@ -190,14 +176,6 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
BUG_ON((colour_set[i]>>24 & 0xff) != 0xff);
}
- /* Map up-coming buffer to write colour indices */
- 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);
@@ -224,42 +202,35 @@ int mga_crtc_cursor_set(struct drm_crtc *crtc,
}
/* Program gpu address of cursor buffer */
- if (pixels_prev == pixels_1)
- gpu_addr = mdev->cursor.pixels_1_gpu_addr;
- else
- gpu_addr = mdev->cursor.pixels_2_gpu_addr;
- WREG_DAC(MGA1064_CURSOR_BASE_ADR_LOW, (u8)((gpu_addr>>10) & 0xff));
- WREG_DAC(MGA1064_CURSOR_BASE_ADR_HI, (u8)((gpu_addr>>18) & 0x3f));
+ WREG_DAC(MGA1064_CURSOR_BASE_ADR_LOW, (u8)((dst_gpu>>10) & 0xff));
+ WREG_DAC(MGA1064_CURSOR_BASE_ADR_HI, (u8)((dst_gpu>>18) & 0x3f));
/* Adjust cursor control register to turn on the cursor */
WREG_DAC(MGA1064_CURSOR_CTL, 4); /* 16-colour palletized cursor mode */
- /* Now swap internal buffer pointers */
- if (mdev->cursor.pixels_1 == mdev->cursor.pixels_prev) {
- mdev->cursor.pixels_prev = mdev->cursor.pixels_2;
- mdev->cursor.pixels_current = mdev->cursor.pixels_1;
- } else if (mdev->cursor.pixels_1 == mdev->cursor.pixels_current) {
- mdev->cursor.pixels_prev = mdev->cursor.pixels_1;
- mdev->cursor.pixels_current = mdev->cursor.pixels_2;
- } else {
- BUG();
- }
- ret = 0;
+ /* Now update internal buffer pointers */
+ if (pixels_current)
+ drm_gem_vram_unpin(pixels_current);
+ mdev->cursor.pixels_current = pixels_next;
- drm_gem_vram_kunmap(pixels_prev);
- out3:
+ drm_gem_vram_kunmap(pixels_next);
+ drm_gem_vram_unpin(pixels_next);
drm_gem_vram_kunmap(gbo);
- out2:
- drm_gem_vram_unlock(gbo);
- out1:
- if (ret)
- mga_hide_cursor(mdev);
- drm_gem_vram_unlock(pixels_1);
-out_unlock1:
- drm_gem_vram_unlock(pixels_2);
-out_unref:
+ drm_gem_vram_unpin(gbo);
drm_gem_object_put_unlocked(obj);
+ return 0;
+
+err_drm_gem_vram_kunmap_dst:
+ drm_gem_vram_kunmap(pixels_next);
+err_drm_gem_vram_unpin_dst:
+ drm_gem_vram_unpin(pixels_next);
+err_drm_gem_vram_kunmap_src:
+ drm_gem_vram_kunmap(gbo);
+err_drm_gem_vram_unpin_src:
+ drm_gem_vram_unpin(gbo);
+err_drm_gem_object_put_unlocked:
+ drm_gem_object_put_unlocked(obj);
return ret;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 6180acbca7ca..d39f2a567b3f 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -158,11 +158,8 @@ struct mga_cursor {
*/
struct drm_gem_vram_object *pixels_1;
struct drm_gem_vram_object *pixels_2;
- u64 pixels_1_gpu_addr, pixels_2_gpu_addr;
/* The currently displayed icon, this points to one of pixels_1, or pixels_2 */
struct drm_gem_vram_object *pixels_current;
- /* The previously displayed icon */
- struct drm_gem_vram_object *pixels_prev;
};
struct mga_mc {
diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index f3687fed4075..0d7fc00e5d8a 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -241,10 +241,8 @@ int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
mdev->cursor.pixels_2 = NULL;
dev_warn(&dev->pdev->dev,
"Could not allocate space for cursors. Not doing hardware cursors.\n");
- } else {
- mdev->cursor.pixels_current = mdev->cursor.pixels_1;
- mdev->cursor.pixels_prev = mdev->cursor.pixels_2;
}
+ mdev->cursor.pixels_current = NULL;
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-26 16:28:22 +0000