Commit 977b4f6e authored by Daniel Vetter's avatar Daniel Vetter
Browse files

drm/via: use drm_mm instead of drm_sman 



To make the transition in a piece-wise and bisectable way possible,
I've hijacked the ->owner_list from drm_sman. While transitioning, the
list_add was done by the driver, while the list_del was still done by
the dying sman code.

Now that we are in full control of ->owner_list, do the list_del
ourselves.

v2: Better explain the list_del trickery as suggested by Chris Wilson.

Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 94e89532

drivers/gpu/drm/via/via_drv.h

+3 −2
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ 
#ifndef _VIA_DRV_H_

#define _VIA_DRV_H_



#include "drm_sman.h"

#include "drm_mm.h"

#define DRIVER_AUTHOR	"Various"



#define DRIVER_NAME		"via"
@@ -88,9 +88,10 @@ typedef struct drm_via_private { 
	uint32_t irq_pending_mask;

	int *irq_map;

	unsigned int idle_fault;

	struct drm_sman sman;

	int vram_initialized;

	struct drm_mm vram_mm;

	int agp_initialized;

	struct drm_mm agp_mm;

	/** Mapping of userspace keys to mm objects */

	struct idr object_idr;

	unsigned long vram_offset;

drivers/gpu/drm/via/via_map.c

+0 −7
Original line number Diff line number Diff line
@@ -105,15 +105,9 @@ int via_driver_load(struct drm_device *dev, unsigned long chipset) 
	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;

	}



	ret = drm_vblank_init(dev, 1);

	if (ret) {

		drm_sman_takedown(&dev_priv->sman);

		kfree(dev_priv);

		return ret;

	}
@@ -125,7 +119,6 @@ int via_driver_unload(struct drm_device *dev) 
{

	drm_via_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);

drivers/gpu/drm/via/via_mm.c

+40 −32
Original line number Diff line number Diff line
@@ -28,26 +28,22 @@ 
#include "drmP.h"

#include "via_drm.h"

#include "via_drv.h"

#include "drm_sman.h"



#define VIA_MM_ALIGN_SHIFT 4

#define VIA_MM_ALIGN_MASK ((1 << VIA_MM_ALIGN_SHIFT) - 1)



struct via_memblock {

	struct drm_mm_node mm_node;

	struct list_head owner_list;

};



int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)

{

	drm_via_agp_t *agp = data;

	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;

	int ret;



	mutex_lock(&dev->struct_mutex);

	ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,

				 agp->size >> VIA_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 >> VIA_MM_ALIGN_SHIFT);



	dev_priv->agp_initialized = 1;

	dev_priv->agp_offset = agp->offset;
@@ -61,17 +57,9 @@ int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv) 
{

	drm_via_fb_t *fb = data;

	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;

	int ret;



	mutex_lock(&dev->struct_mutex);

	ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,

				 fb->size >> VIA_MM_ALIGN_SHIFT);



	if (ret) {

		DRM_ERROR("VRAM memory manager initialisation error\n");

		mutex_unlock(&dev->struct_mutex);

		return ret;

	}

	drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> VIA_MM_ALIGN_SHIFT);



	dev_priv->vram_initialized = 1;

	dev_priv->vram_offset = fb->offset;
@@ -108,9 +96,14 @@ void via_lastclose(struct drm_device *dev) 
		return;



	mutex_lock(&dev->struct_mutex);

	drm_sman_cleanup(&dev_priv->sman);

	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;

	}

	mutex_unlock(&dev->struct_mutex);

}
@@ -119,7 +112,7 @@ int via_mem_alloc(struct drm_device *dev, void *data, 
{

	drm_via_mem_t *mem = data;

	int retval = 0, user_key;

	struct drm_memblock_item *item;

	struct via_memblock *item;

	drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;

	struct via_file_private *file_priv = file->driver_priv;

	unsigned long tmpSize;
@@ -137,13 +130,24 @@ int via_mem_alloc(struct drm_device *dev, void *data, 
		return -EINVAL;

	}



	tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;

	item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0, 0);

	item = kzalloc(sizeof(*item), GFP_KERNEL);

	if (!item) {

		retval = -ENOMEM;

		goto fail_alloc;

	}



	tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;

	if (mem->type == VIA_MEM_AGP)

		retval = drm_mm_insert_node(&dev_priv->agp_mm,

					    &item->mm_node,

					    tmpSize, 0);

	else

		retval = drm_mm_insert_node(&dev_priv->vram_mm,

					    &item->mm_node,

					    tmpSize, 0);

	if (retval)

		goto fail_alloc;



again:

	if (idr_pre_get(&dev_priv->object_idr, GFP_KERNEL) == 0) {

		retval = -ENOMEM;
@@ -161,15 +165,15 @@ again: 


	mem->offset = ((mem->type == VIA_MEM_VIDEO) ?

		      dev_priv->vram_offset : dev_priv->agp_offset) +

	    (item->mm->

	     offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);

	    ((item->mm_node.start) << VIA_MM_ALIGN_SHIFT);

	mem->index = user_key;



	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;
@@ -184,7 +188,7 @@ int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv) 
{

	drm_via_private_t *dev_priv = dev->dev_private;

	drm_via_mem_t *mem = data;

	struct drm_memblock_item *obj;

	struct via_memblock *obj;

	int ret;



	mutex_lock(&dev->struct_mutex);
@@ -195,7 +199,9 @@ int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv) 
	}



	idr_remove(&dev_priv->object_idr, mem->index);

	drm_sman_free(obj);

	list_del(&obj->owner_list);

	drm_mm_remove_node(&obj->mm_node);

	kfree(obj);

	mutex_unlock(&dev->struct_mutex);



	DRM_DEBUG("free = 0x%lx\n", mem->index);
@@ -208,7 +214,7 @@ void via_reclaim_buffers_locked(struct drm_device *dev, 
				struct drm_file *file)

{

	struct via_file_private *file_priv = file->driver_priv;

	struct drm_memblock_item *entry, *next;

	struct via_memblock *entry, *next;



	mutex_lock(&dev->struct_mutex);

	if (list_empty(&file_priv->obj_list)) {
@@ -221,7 +227,9 @@ void via_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);

		drm_mm_remove_node(&entry->mm_node);

		kfree(entry);

	}

	mutex_unlock(&dev->struct_mutex);

	return;

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