Release 4.15 drivers/gpu/drm/sis/sis_mm.c

/**************************************************************************
 *
 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *
 **************************************************************************/

/*
 * Authors:
 *    Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#include <drm/drmP.h>
#include <drm/sis_drm.h>
#include "sis_drv.h"

#include <video/sisfb.h>


#define VIDEO_TYPE 0

#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

#else /* CONFIG_FB_SIS[_MODULE] */


#define SIS_MM_ALIGN_SHIFT 4

#define SIS_MM_ALIGN_MASK ((1 << SIS_MM_ALIGN_SHIFT) - 1)

#endif /* CONFIG_FB_SIS[_MODULE] */



static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_fb_t *fb = data;

	mutex_lock(&dev->struct_mutex);
	/* 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;

	mutex_unlock(&dev->struct_mutex);
	DRM_DEBUG("offset = %lu, size = %lu\n", fb->offset, fb->size);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Hellstrom
40
41.24%
1
12.50%
Linus Torvalds
31
31.96%
2
25.00%
Eric Anholt
20
20.62%
1
12.50%
Daniel Vetter
4
4.12%
2
25.00%
Andrew Morton
1
1.03%
1
12.50%
Dave Airlie
1
1.03%
1
12.50%
Total
97
100.00%
8
100.00%



static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
			 void *data, int pool)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_mem_t *mem = data;
	int retval = 0, user_key;
	struct sis_memblock *item;
	struct sis_file_private *file_priv = file->driver_priv;
	unsigned long offset;

	mutex_lock(&dev->struct_mutex);

	if (0 == ((pool == 0) ? dev_priv->vram_initialized :
		      dev_priv->agp_initialized)) {
		DRM_ERROR
		    ("Attempt to allocate from uninitialized memory manager.\n");
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

	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);
		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);
		offset = item->mm_node.start;
#endif
	}
	if (retval)
		goto fail_alloc;

	retval = idr_alloc(&dev_priv->object_idr, item, 1, 0, GFP_KERNEL);
	if (retval < 0)
		goto fail_idr;
	user_key = retval;

	list_add(&item->owner_list, &file_priv->obj_list);
	mutex_unlock(&dev->struct_mutex);

	mem->offset = ((pool == 0) ?
		      dev_priv->vram_offset : dev_priv->agp_offset) +
	    (offset << SIS_MM_ALIGN_SHIFT);
	mem->free = user_key;
	mem->size = mem->size << SIS_MM_ALIGN_SHIFT;

	return 0;

fail_idr:
	drm_mm_remove_node(&item->mm_node);
fail_alloc:
	kfree(item);
	mutex_unlock(&dev->struct_mutex);

	mem->offset = 0;
	mem->size = 0;
	mem->free = 0;

	DRM_DEBUG("alloc %d, size = %ld, offset = %ld\n", pool, mem->size,
		  mem->offset);

	return retval;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Vetter
229
52.40%
5
31.25%
Thomas Hellstrom
139
31.81%
1
6.25%
Linus Torvalds
28
6.41%
2
12.50%
Eric Anholt
16
3.66%
2
12.50%
Tejun Heo
10
2.29%
1
6.25%
Roel Kluin
8
1.83%
1
6.25%
Dave Airlie
6
1.37%
3
18.75%
Andrew Morton
1
0.23%
1
6.25%
Total
437
100.00%
16
100.00%



static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_mem_t *mem = data;
	struct sis_memblock *obj;

	mutex_lock(&dev->struct_mutex);
	obj = idr_find(&dev_priv->object_idr, mem->free);
	if (obj == NULL) {
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

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

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Vetter
95
56.89%
3
42.86%
Linus Torvalds
31
18.56%
1
14.29%
Thomas Hellstrom
22
13.17%
1
14.29%
Eric Anholt
18
10.78%
1
14.29%
Dave Airlie
1
0.60%
1
14.29%
Total
167
100.00%
7
100.00%



static int sis_fb_alloc(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	return sis_drm_alloc(dev, file_priv, data, VIDEO_TYPE);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Anholt
14
43.75%
2
33.33%
Thomas Hellstrom
12
37.50%
1
16.67%
Linus Torvalds
5
15.62%
2
33.33%
Dave Airlie
1
3.12%
1
16.67%
Total
32
100.00%
6
100.00%



static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
			      struct drm_file *file_priv)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_agp_t *agp = data;
	dev_priv = dev->dev_private;

	mutex_lock(&dev->struct_mutex);
	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;
	mutex_unlock(&dev->struct_mutex);

	DRM_DEBUG("offset = %lu, size = %lu\n", agp->offset, agp->size);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Hellstrom
44
43.14%
1
14.29%
Linus Torvalds
34
33.33%
2
28.57%
Eric Anholt
20
19.61%
1
14.29%
Daniel Vetter
3
2.94%
2
28.57%
Andrew Morton
1
0.98%
1
14.29%
Total
102
100.00%
7
100.00%



static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data,
			       struct drm_file *file_priv)
{

	return sis_drm_alloc(dev, file_priv, data, AGP_TYPE);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Anholt
14
43.75%
2
40.00%
Thomas Hellstrom
13
40.62%
1
20.00%
Linus Torvalds
4
12.50%
1
20.00%
Dave Airlie
1
3.12%
1
20.00%
Total
32
100.00%
5
100.00%



static drm_local_map_t *sis_reg_init(struct drm_device *dev)
{
	struct drm_map_list *entry;
	drm_local_map_t *map;

	list_for_each_entry(entry, &dev->maplist, head) {
		map = entry->map;
		if (!map)
			continue;
		if (map->type == _DRM_REGISTERS)
			return map;
	}
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Hellstrom
52
91.23%
1
25.00%
Dave Airlie
5
8.77%
3
75.00%
Total
57
100.00%
4
100.00%



int sis_idle(struct drm_device *dev)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	uint32_t idle_reg;
	unsigned long end;
	int i;

	if (dev_priv->idle_fault)
		return 0;

	if (dev_priv->mmio == NULL) {
		dev_priv->mmio = sis_reg_init(dev);
		if (dev_priv->mmio == NULL) {
			DRM_ERROR("Could not find register map.\n");
			return 0;
		}
	}

	/*
         * Implement a device switch here if needed
         */

	if (dev_priv->chipset != SIS_CHIP_315)
		return 0;

	/*
         * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
         * because its polling frequency is too low.
         */

	end = jiffies + (HZ * 3);

	for (i = 0; i < 4; ++i) {
		do {
			idle_reg = SIS_READ(0x85cc);
		} while (!time_after_eq(jiffies, end) &&
			  ((idle_reg & 0x80000000) != 0x80000000));
	}

	if (time_after_eq(jiffies, end)) {
		DRM_ERROR("Graphics engine idle timeout. "
			  "Disabling idle check\n");
		dev_priv->idle_fault = 1;
	}

	/*
         * The caller never sees an error code. It gets trapped
         * in libdrm.
         */

	return 0;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
Thomas Hellstrom
166
97.65%
1
25.00%
Dave Airlie
2
1.18%
1
25.00%
Andrew Morton
1
0.59%
1
25.00%
Daniel Vetter
1
0.59%
1
25.00%
Total
170
100.00%
4
100.00%



void sis_lastclose(struct drm_device *dev)
{
	drm_sis_private_t *dev_priv = dev->dev_private;

	if (!dev_priv)
		return;

	mutex_lock(&dev->struct_mutex);
	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);
}

Contributors
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Tokens
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Commits
CommitProp
Thomas Hellstrom
38
42.22%
2
33.33%
Daniel Vetter
26
28.89%
1
16.67%
Linus Torvalds
24
26.67%
2
33.33%
Andrew Morton
2
2.22%
1
16.67%
Total
90
100.00%
6
100.00%



void sis_reclaim_buffers_locked(struct drm_device *dev,
				struct drm_file *file)
{
	struct sis_file_private *file_priv = file->driver_priv;
	struct sis_memblock *entry, *next;

	if (!(dev->master && file->master->lock.hw_lock))
		return;

	drm_legacy_idlelock_take(&file->master->lock);

	mutex_lock(&dev->struct_mutex);
	if (list_empty(&file_priv->obj_list)) {
		mutex_unlock(&dev->struct_mutex);
		drm_legacy_idlelock_release(&file->master->lock);

		return;
	}

	sis_idle(dev);


	list_for_each_entry_safe(entry, next, &file_priv->obj_list,
				 owner_list) {
		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);

	drm_legacy_idlelock_release(&file->master->lock);

	return;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Daniel Vetter
125
66.14%
4
40.00%
Thomas Hellstrom
29
15.34%
1
10.00%
Linus Torvalds
28
14.81%
2
20.00%
David Herrmann
3
1.59%
1
10.00%
Eric Anholt
2
1.06%
1
10.00%
Dave Airlie
2
1.06%
1
10.00%
Total
189
100.00%
10
100.00%


const struct drm_ioctl_desc sis_ioctls[] = {
	DRM_IOCTL_DEF_DRV(SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
	DRM_IOCTL_DEF_DRV(SIS_FB_FREE, sis_drm_free, DRM_AUTH),
	DRM_IOCTL_DEF_DRV(SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
	DRM_IOCTL_DEF_DRV(SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
	DRM_IOCTL_DEF_DRV(SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
	DRM_IOCTL_DEF_DRV(SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
};


int sis_max_ioctl = ARRAY_SIZE(sis_ioctls);
Overall Contributors
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Tokens
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Commits
CommitProp
Thomas Hellstrom
573
37.60%
2
5.88%
Daniel Vetter
500
32.81%
9
26.47%
Linus Torvalds
205
13.45%
2
5.88%
Eric Anholt
125
8.20%
3
8.82%
Dave Airlie
72
4.72%
7
20.59%
Tejun Heo
10
0.66%
1
2.94%
Adrian Bunk
9
0.59%
1
2.94%
David Howells
9
0.59%
2
5.88%
Roel Kluin
8
0.52%
1
2.94%
Andrew Morton
6
0.39%
1
2.94%
David Herrmann
3
0.20%
1
2.94%
Damien Lespiau
1
0.07%
1
2.94%
Nicolas Kaiser
1
0.07%
1
2.94%
Jan Engelhardt
1
0.07%
1
2.94%
Rob Clark
1
0.07%
1
2.94%
Total
1524
100.00%
34
100.00%
Directory: drivers/gpu/drm/sis

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