aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nv04_instmem.c
blob: b8611b9553131b1df7669f394586dc8e4e80abff (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_ramht.h"

/* returns the size of fifo context */
static int
nouveau_fifo_ctx_size(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (dev_priv->chipset >= 0x40)
		return 128;
	else
	if (dev_priv->chipset >= 0x17)
		return 64;

	return 32;
}

int nv04_instmem_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_gpuobj *ramht = NULL;
	u32 offset, length;
	int ret;

	/* RAMIN always available */
	dev_priv->ramin_available = true;

	/* Setup shared RAMHT */
	ret = nouveau_gpuobj_new_fake(dev, 0x10000, ~0, 4096,
				      NVOBJ_FLAG_ZERO_ALLOC, &ramht);
	if (ret)
		return ret;

	ret = nouveau_ramht_new(dev, ramht, &dev_priv->ramht);
	nouveau_gpuobj_ref(NULL, &ramht);
	if (ret)
		return ret;

	/* And RAMRO */
	ret = nouveau_gpuobj_new_fake(dev, 0x11200, ~0, 512,
				      NVOBJ_FLAG_ZERO_ALLOC, &dev_priv->ramro);
	if (ret)
		return ret;

	/* And RAMFC */
	length = dev_priv->engine.fifo.channels * nouveau_fifo_ctx_size(dev);
	switch (dev_priv->card_type) {
	case NV_40:
		offset = 0x20000;
		break;
	default:
		offset = 0x11400;
		break;
	}

	ret = nouveau_gpuobj_new_fake(dev, offset, ~0, length,
				      NVOBJ_FLAG_ZERO_ALLOC, &dev_priv->ramfc);
	if (ret)
		return ret;

	/* Only allow space after RAMFC to be used for object allocation */
	offset += length;

	/* It appears RAMRO (or something?) is controlled by 0x2220/0x2230
	 * on certain NV4x chipsets as well as RAMFC.  When 0x2230 == 0
	 * ("new style" control) the upper 16-bits of 0x2220 points at this
	 * other mysterious table that's clobbering important things.
	 *
	 * We're now pointing this at RAMIN+0x30000 to avoid RAMFC getting
	 * smashed to pieces on us, so reserve 0x30000-0x40000 too..
	 */
	if (dev_priv->card_type >= NV_40) {
		if (offset < 0x40000)
			offset = 0x40000;
	}

	ret = drm_mm_init(&dev_priv->ramin_heap, offset,
			  dev_priv->ramin_rsvd_vram - offset);
	if (ret) {
		NV_ERROR(dev, "Failed to init RAMIN heap: %d\n", ret);
		return ret;
	}

	return 0;
}

void
nv04_instmem_takedown(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	nouveau_ramht_ref(NULL, &dev_priv->ramht, NULL);
	nouveau_gpuobj_ref(NULL, &dev_priv->ramro);
	nouveau_gpuobj_ref(NULL, &dev_priv->ramfc);

	if (drm_mm_initialized(&dev_priv->ramin_heap))
		drm_mm_takedown(&dev_priv->ramin_heap);
}

int
nv04_instmem_suspend(struct drm_device *dev)
{
	return 0;
}

void
nv04_instmem_resume(struct drm_device *dev)
{
}

int
nv04_instmem_get(struct nouveau_gpuobj *gpuobj, u32 size, u32 align)
{
	struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;
	struct drm_mm_node *ramin = NULL;

	do {
		if (drm_mm_pre_get(&dev_priv->ramin_heap))
			return -ENOMEM;

		spin_lock(&dev_priv->ramin_lock);
		ramin = drm_mm_search_free(&dev_priv->ramin_heap, size, align, 0);
		if (ramin == NULL) {
			spin_unlock(&dev_priv->ramin_lock);
			return -ENOMEM;
		}

		ramin = drm_mm_get_block_atomic(ramin, size, align);
		spin_unlock(&dev_priv->ramin_lock);
	} while (ramin == NULL);

	gpuobj->node  = ramin;
	gpuobj->vinst = ramin->start;
	return 0;
}

void
nv04_instmem_put(struct nouveau_gpuobj *gpuobj)
{
	struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;

	spin_lock(&dev_priv->ramin_lock);
	drm_mm_put_block(gpuobj->node);
	gpuobj->node = NULL;
	spin_unlock(&dev_priv->ramin_lock);
}

int
nv04_instmem_map(struct nouveau_gpuobj *gpuobj)
{
	gpuobj->pinst = gpuobj->vinst;
	return 0;
}

void
nv04_instmem_unmap(struct nouveau_gpuobj *gpuobj)
{
}

void
nv04_instmem_flush(struct drm_device *dev)
{
}