From f3309105b87956bdadfcc35bf0cefc463f427c9b Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Fri, 6 Sep 2019 14:20:55 +0200
Subject: drm/vram: Add infrastructure for move_notify()
Git-commit: f3309105b87956bdadfcc35bf0cefc463f427c9b
Patch-mainline: v5.5-rc1
References: bsc#1152489
This patch prepares VRAM helpers for lazy unmapping of buffer objects.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-and-tested-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20190906122056.32018-4-tzimmermann@suse.de
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/drm_vram_mm_helper.c | 12 ++++++++++++
include/drm/drm_vram_mm_helper.h | 4 ++++
2 files changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c
index c911781d6728..31984690d5f3 100644
--- a/drivers/gpu/drm/drm_vram_mm_helper.c
+++ b/drivers/gpu/drm/drm_vram_mm_helper.c
@@ -98,6 +98,17 @@ static int bo_driver_verify_access(struct ttm_buffer_object *bo,
return vmm->funcs->verify_access(bo, filp);
}
+static void bo_driver_move_notify(struct ttm_buffer_object *bo,
+ bool evict,
+ struct ttm_mem_reg *new_mem)
+{
+ struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev);
+
+ if (!vmm->funcs || !vmm->funcs->move_notify)
+ return;
+ vmm->funcs->move_notify(bo, evict, new_mem);
+}
+
static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev,
struct ttm_mem_reg *mem)
{
@@ -140,6 +151,7 @@ static struct ttm_bo_driver bo_driver = {
.eviction_valuable = ttm_bo_eviction_valuable,
.evict_flags = bo_driver_evict_flags,
.verify_access = bo_driver_verify_access,
+ .move_notify = bo_driver_move_notify,
.io_mem_reserve = bo_driver_io_mem_reserve,
.io_mem_free = bo_driver_io_mem_free,
};
diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h
index 2aacfb1ccfae..7fb8700f45fe 100644
--- a/include/drm/drm_vram_mm_helper.h
+++ b/include/drm/drm_vram_mm_helper.h
@@ -15,6 +15,8 @@ struct drm_device;
&ttm_bo_driver.evict_flags
* @verify_access: Provides an implementation for \
struct &ttm_bo_driver.verify_access
+ * @move_notify: Provides an implementation for
+ * struct &ttm_bo_driver.move_notify
*
* These callback function integrate VRAM MM with TTM buffer objects. New
* functions can be added if necessary.
@@ -23,6 +25,8 @@ struct drm_vram_mm_funcs {
void (*evict_flags)(struct ttm_buffer_object *bo,
struct ttm_placement *placement);
int (*verify_access)(struct ttm_buffer_object *bo, struct file *filp);
+ void (*move_notify)(struct ttm_buffer_object *bo, bool evict,
+ struct ttm_mem_reg *new_mem);
};
/**
--
2.28.0