drm/sis: use drm_mm instead of drm_sman

v2: Smash compile fix from Tormod Volden <debian.tormod@gmail.com> for
CONFIG_FB_SIS on top of this.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

3 files changed, 68 insertions, 78 deletions

diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c
index 64d329f7d9b6..06da063ece2e 100644
--- a/drivers/gpu/drm/sis/sis_drv.c
+++ b/drivers/gpu/drm/sis/sis_drv.c
@@ -49,9 +49,6 @@ static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
         dev->dev_private = (void *)dev_priv;
         dev_priv->chipset = chipset;
         idr_init(&dev->object_name_idr);
-        ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
-        if (ret)
-                kfree(dev_priv);
 
         return ret;
 }
@@ -60,7 +57,6 @@ static int sis_driver_unload(struct drm_device *dev)
 {
         drm_sis_private_t *dev_priv = dev->dev_private;
 
-        drm_sman_takedown(&dev_priv->sman);
         idr_remove_all(&dev_priv->object_idr);
         idr_destroy(&dev_priv->object_idr);
 
diff --git a/drivers/gpu/drm/sis/sis_drv.h b/drivers/gpu/drm/sis/sis_drv.h
index fcdd06ad5dc3..573758b2d2d6 100644
--- a/drivers/gpu/drm/sis/sis_drv.h
+++ b/drivers/gpu/drm/sis/sis_drv.h
@@ -44,7 +44,7 @@ enum sis_family {
         SIS_CHIP_315 = 1,
 };
 
-#include "drm_sman.h"
+#include "drm_mm.h"
 
 
 #define SIS_BASE (dev_priv->mmio)
@@ -54,12 +54,13 @@ enum sis_family {
 typedef struct drm_sis_private {
         drm_local_map_t *mmio;
         unsigned int idle_fault;
-        struct drm_sman sman;
         unsigned int chipset;
         int vram_initialized;
         int agp_initialized;
         unsigned long vram_offset;
         unsigned long agp_offset;
+        struct drm_mm vram_mm;
+        struct drm_mm agp_mm;
         /** Mapping of userspace keys to mm objects */
         struct idr object_idr;
 } drm_sis_private_t;
diff --git a/drivers/gpu/drm/sis/sis_mm.c b/drivers/gpu/drm/sis/sis_mm.c
index 21d36df02a88..46cb2bce6cc5 100644
--- a/drivers/gpu/drm/sis/sis_mm.c
+++ b/drivers/gpu/drm/sis/sis_mm.c
@@ -41,40 +41,18 @@
 #define AGP_TYPE 1
 
 
+struct sis_memblock {
+        struct drm_mm_node mm_node;
+        struct sis_memreq req;
+        struct list_head owner_list;
+};
+
 #if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
 /* fb management via fb device */
 
 #define SIS_MM_ALIGN_SHIFT 0
 #define SIS_MM_ALIGN_MASK 0
 
-static void *sis_sman_mm_allocate(void *private, unsigned long size,
-                                  unsigned alignment)
-{
-        struct sis_memreq req;
-
-        req.size = size;
-        sis_malloc(&req);
-        if (req.size == 0)
-                return NULL;
-        else
-                return (void *)(unsigned long)~req.offset;
-}
-
-static void sis_sman_mm_free(void *private, void *ref)
-{
-        sis_free(~((unsigned long)ref));
-}
-
-static void sis_sman_mm_destroy(void *private)
-{
-        ;
-}
-
-static unsigned long sis_sman_mm_offset(void *private, void *ref)
-{
-        return ~((unsigned long)ref);
-}
-
 #else /* CONFIG_FB_SIS[_MODULE] */
 
 #define SIS_MM_ALIGN_SHIFT 4
@@ -86,30 +64,11 @@ static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file
 {
         drm_sis_private_t *dev_priv = dev->dev_private;
         drm_sis_fb_t *fb = data;
-        int ret;
 
         mutex_lock(&dev->struct_mutex);
-#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
-        {
-                struct drm_sman_mm sman_mm;
-                sman_mm.private = (void *)0xFFFFFFFF;
-                sman_mm.allocate = sis_sman_mm_allocate;
-                sman_mm.free = sis_sman_mm_free;
-                sman_mm.destroy = sis_sman_mm_destroy;
-                sman_mm.offset = sis_sman_mm_offset;
-                ret =
-                    drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
-        }
-#else
-        ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
-                                 fb->size >> SIS_MM_ALIGN_SHIFT);
-#endif
-
-        if (ret) {
-                DRM_ERROR("VRAM memory manager initialisation error\n");
-                mutex_unlock(&dev->struct_mutex);
-                return ret;
-        }
+        /* Unconditionally init the drm_mm, even though we don't use it when the
+         * fb sis driver is available - make cleanup easier. */
+        drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> SIS_MM_ALIGN_SHIFT);
 
         dev_priv->vram_initialized = 1;
         dev_priv->vram_offset = fb->offset;
@@ -126,8 +85,9 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
         drm_sis_private_t *dev_priv = dev->dev_private;
         drm_sis_mem_t *mem = data;
         int retval = 0, user_key;
-        struct drm_memblock_item *item;
+        struct sis_memblock *item;
         struct sis_file_private *file_priv = file->driver_priv;
+        unsigned long offset;
 
         mutex_lock(&dev->struct_mutex);
 
@@ -139,13 +99,35 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
                 return -EINVAL;
         }
 
-        mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
-        item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0, 0);
+        item = kzalloc(sizeof(*item), GFP_KERNEL);
         if (!item) {
                 retval = -ENOMEM;
                 goto fail_alloc;
         }
 
+        mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
+        if (pool == AGP_TYPE) {
+                retval = drm_mm_insert_node(&dev_priv->agp_mm,
+                                            &item->mm_node,
+                                            mem->size, 0);
+                offset = item->mm_node.start;
+        } else {
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+                item->req.size = mem->size;
+                sis_malloc(&item->req);
+                if (item->req.size == 0)
+                        retval = -ENOMEM;
+                offset = item->req.offset;
+#else
+                retval = drm_mm_insert_node(&dev_priv->vram_mm,
+                                            &item->mm_node,
+                                            mem->size, 0);
+                offset = item->mm_node.start;
+#endif
+        }
+        if (retval)
+                goto fail_alloc;
+
 again:
         if (idr_pre_get(&dev_priv->object_idr, GFP_KERNEL) == 0) {
                 retval = -ENOMEM;
@@ -163,16 +145,16 @@ again:
 
         mem->offset = ((pool == 0) ?
                       dev_priv->vram_offset : dev_priv->agp_offset) +
-            (item->mm->
-             offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
+            (offset << SIS_MM_ALIGN_SHIFT);
         mem->free = user_key;
         mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
 
         return 0;
 
 fail_idr:
-        drm_sman_free(item);
+        drm_mm_remove_node(&item->mm_node);
 fail_alloc:
+        kfree(item);
         mutex_unlock(&dev->struct_mutex);
 
         mem->offset = 0;
@@ -189,7 +171,7 @@ static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *fil
 {
         drm_sis_private_t *dev_priv = dev->dev_private;
         drm_sis_mem_t *mem = data;
-        struct drm_memblock_item *obj;
+        struct sis_memblock *obj;
         int ret;
 
         mutex_lock(&dev->struct_mutex);
@@ -200,7 +182,14 @@ static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *fil
         }
 
         idr_remove(&dev_priv->object_idr, mem->free);
-        drm_sman_free(obj);
+        list_del(&obj->owner_list);
+        if (drm_mm_node_allocated(&obj->mm_node))
+                drm_mm_remove_node(&obj->mm_node);
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+        else
+                sis_free(obj->req.offset);
+#endif
+        kfree(obj);
         mutex_unlock(&dev->struct_mutex);
         DRM_DEBUG("free = 0x%lx\n", mem->free);
 
@@ -218,18 +207,10 @@ static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
 {
         drm_sis_private_t *dev_priv = dev->dev_private;
         drm_sis_agp_t *agp = data;
-        int ret;
         dev_priv = dev->dev_private;
 
         mutex_lock(&dev->struct_mutex);
-        ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
-                                 agp->size >> SIS_MM_ALIGN_SHIFT);
-
-        if (ret) {
-                DRM_ERROR("AGP memory manager initialisation error\n");
-                mutex_unlock(&dev->struct_mutex);
-                return ret;
-        }
+        drm_mm_init(&dev_priv->agp_mm, 0, agp->size >> SIS_MM_ALIGN_SHIFT);
 
         dev_priv->agp_initialized = 1;
         dev_priv->agp_offset = agp->offset;
@@ -323,9 +304,14 @@ void sis_lastclose(struct drm_device *dev)
                 return;
 
         mutex_lock(&dev->struct_mutex);
-        drm_sman_cleanup(&dev_priv->sman);
-        dev_priv->vram_initialized = 0;
-        dev_priv->agp_initialized = 0;
+        if (dev_priv->vram_initialized) {
+                drm_mm_takedown(&dev_priv->vram_mm);
+                dev_priv->vram_initialized = 0;
+        }
+        if (dev_priv->agp_initialized) {
+                drm_mm_takedown(&dev_priv->agp_mm);
+                dev_priv->agp_initialized = 0;
+        }
         dev_priv->mmio = NULL;
         mutex_unlock(&dev->struct_mutex);
 }
@@ -334,7 +320,7 @@ void sis_reclaim_buffers_locked(struct drm_device *dev,
                                 struct drm_file *file)
 {
         struct sis_file_private *file_priv = file->driver_priv;
-        struct drm_memblock_item *entry, *next;
+        struct sis_memblock *entry, *next;
 
         mutex_lock(&dev->struct_mutex);
         if (list_empty(&file_priv->obj_list)) {
@@ -348,7 +334,14 @@ void sis_reclaim_buffers_locked(struct drm_device *dev,
 
         list_for_each_entry_safe(entry, next, &file_priv->obj_list,
                                  owner_list) {
-                drm_sman_free(entry);
+                list_del(&entry->owner_list);
+                if (drm_mm_node_allocated(&entry->mm_node))
+                        drm_mm_remove_node(&entry->mm_node);
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+                else
+                        sis_free(entry->req.offset);
+#endif
+                kfree(entry);
         }
         mutex_unlock(&dev->struct_mutex);
         return;