From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>, dri-devel@lists.freedesktop.org
Subject: [PATCH 01/16] drm: Introduce drm_mm_create_block()
Date: Thu, 15 Nov 2012 11:32:16 +0000 [thread overview]
Message-ID: <1352979151-9934-2-git-send-email-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <1352979151-9934-1-git-send-email-chris@chris-wilson.co.uk>
To be used later by i915 to preallocate exact blocks of space from the
range manager.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/drm_mm.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++
include/drm/drm_mm.h | 4 ++++
2 files changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 0761a03..bd203b6 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -161,6 +161,56 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node,
}
}
+struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
+ unsigned long start,
+ unsigned long size,
+ bool atomic)
+{
+ struct drm_mm_node *hole, *node;
+ unsigned long end = start + size;
+
+ list_for_each_entry(hole, &mm->hole_stack, hole_stack) {
+ unsigned long hole_start;
+ unsigned long hole_end;
+
+ BUG_ON(!hole->hole_follows);
+ hole_start = drm_mm_hole_node_start(hole);
+ hole_end = drm_mm_hole_node_end(hole);
+
+ if (hole_start > start || hole_end < end)
+ continue;
+
+ node = drm_mm_kmalloc(mm, atomic);
+ if (unlikely(node == NULL))
+ return NULL;
+
+ node->start = start;
+ node->size = size;
+ node->mm = mm;
+ node->allocated = 1;
+
+ INIT_LIST_HEAD(&node->hole_stack);
+ list_add(&node->node_list, &hole->node_list);
+
+ if (start == hole_start) {
+ hole->hole_follows = 0;
+ list_del_init(&hole->hole_stack);
+ }
+
+ node->hole_follows = 0;
+ if (end != hole_end) {
+ list_add(&node->hole_stack, &mm->hole_stack);
+ node->hole_follows = 1;
+ }
+
+ return node;
+ }
+
+ WARN(1, "no hole found for block 0x%lx + 0x%lx\n", start, size);
+ return NULL;
+}
+EXPORT_SYMBOL(drm_mm_create_block);
+
struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *hole_node,
unsigned long size,
unsigned alignment,
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 06d7f79..4020f96 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -102,6 +102,10 @@ static inline bool drm_mm_initialized(struct drm_mm *mm)
/*
* Basic range manager support (drm_mm.c)
*/
+extern struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
+ unsigned long start,
+ unsigned long size,
+ bool atomic);
extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
--
1.7.10.4
next prev parent reply other threads:[~2012-11-15 11:33 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-15 11:32 Hopefully the last round of stolen work Chris Wilson
2012-11-15 11:32 ` Chris Wilson [this message]
2012-11-15 11:32 ` [PATCH 02/16] drm: Introduce an iterator over holes in the drm_mm range manager Chris Wilson
2012-11-15 11:32 ` [PATCH 03/16] drm/i915: Fix detection of base of stolen memory Chris Wilson
2012-11-15 11:32 ` [PATCH 04/16] drm/i915: Avoid clearing preallocated regions from the GTT Chris Wilson
2012-11-15 11:32 ` [PATCH 05/16] drm/i915: Delay allocation of stolen space for FBC Chris Wilson
2012-11-15 11:32 ` [PATCH 06/16] drm/i915: Allow objects to be created with no backing pages, but stolen space Chris Wilson
2012-11-15 11:32 ` [PATCH 07/16] drm/i915: Differentiate between prime and stolen objects Chris Wilson
2012-11-15 11:32 ` [PATCH 08/16] drm/i915: Support readback of stolen objects upon error Chris Wilson
2012-11-15 11:32 ` [PATCH 09/16] drm/i915: Handle stolen objects in pwrite Chris Wilson
2012-11-15 11:32 ` [PATCH 10/16] drm/i915: Handle stolen objects for pread Chris Wilson
2012-11-30 22:33 ` Daniel Vetter
2012-11-30 23:46 ` Chris Wilson
2012-12-01 0:03 ` Daniel Vetter
2012-12-01 0:14 ` Chris Wilson
2012-11-15 11:32 ` [PATCH 11/16] drm/i915: Introduce i915_gem_object_create_stolen() Chris Wilson
2012-11-15 11:32 ` [PATCH 12/16] drm/i915: Allocate fbcon from stolen memory Chris Wilson
2012-11-15 11:32 ` [PATCH 13/16] drm/i915: Allocate ringbuffers " Chris Wilson
2012-11-15 11:32 ` [PATCH 14/16] drm/i915: Allocate overlay registers " Chris Wilson
2012-11-15 11:32 ` [PATCH 15/16] drm/i915: Use a slab for object allocation Chris Wilson
2012-11-30 22:45 ` Daniel Vetter
2012-11-15 11:32 ` [PATCH 16/16] drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl Chris Wilson
2012-11-30 23:06 ` Daniel Vetter
2012-11-30 23:57 ` Chris Wilson
2012-12-01 11:25 ` Chris Wilson
2012-12-01 11:35 ` Daniel Vetter
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