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path: root/drivers/gpu/drm/nouveau/nvc0_instmem.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_instmem.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvc0_instmem.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_instmem.c b/drivers/gpu/drm/nouveau/nvc0_instmem.c
new file mode 100644
index 00000000000..b701c439c92
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvc0_instmem.c
@@ -0,0 +1,223 @@
1/*
2 * Copyright 2010 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25#include "drmP.h"
26
27#include "nouveau_drv.h"
28#include "nouveau_vm.h"
29
30struct nvc0_instmem_priv {
31 struct nouveau_gpuobj *bar1_pgd;
32 struct nouveau_channel *bar1;
33 struct nouveau_gpuobj *bar3_pgd;
34 struct nouveau_channel *bar3;
35};
36
37int
38nvc0_instmem_suspend(struct drm_device *dev)
39{
40 struct drm_nouveau_private *dev_priv = dev->dev_private;
41
42 dev_priv->ramin_available = false;
43 return 0;
44}
45
46void
47nvc0_instmem_resume(struct drm_device *dev)
48{
49 struct drm_nouveau_private *dev_priv = dev->dev_private;
50 struct nvc0_instmem_priv *priv = dev_priv->engine.instmem.priv;
51
52 nv_mask(dev, 0x100c80, 0x00000001, 0x00000000);
53 nv_wr32(dev, 0x001704, 0x80000000 | priv->bar1->ramin->vinst >> 12);
54 nv_wr32(dev, 0x001714, 0xc0000000 | priv->bar3->ramin->vinst >> 12);
55 dev_priv->ramin_available = true;
56}
57
58static void
59nvc0_channel_del(struct nouveau_channel **pchan)
60{
61 struct nouveau_channel *chan;
62
63 chan = *pchan;
64 *pchan = NULL;
65 if (!chan)
66 return;
67
68 nouveau_vm_ref(NULL, &chan->vm, NULL);
69 if (drm_mm_initialized(&chan->ramin_heap))
70 drm_mm_takedown(&chan->ramin_heap);
71 nouveau_gpuobj_ref(NULL, &chan->ramin);
72 kfree(chan);
73}
74
75static int
76nvc0_channel_new(struct drm_device *dev, u32 size, struct nouveau_vm *vm,
77 struct nouveau_channel **pchan,
78 struct nouveau_gpuobj *pgd, u64 vm_size)
79{
80 struct nouveau_channel *chan;
81 int ret;
82
83 chan = kzalloc(sizeof(*chan), GFP_KERNEL);
84 if (!chan)
85 return -ENOMEM;
86 chan->dev = dev;
87
88 ret = nouveau_gpuobj_new(dev, NULL, size, 0x1000, 0, &chan->ramin);
89 if (ret) {
90 nvc0_channel_del(&chan);
91 return ret;
92 }
93
94 ret = drm_mm_init(&chan->ramin_heap, 0x1000, size - 0x1000);
95 if (ret) {
96 nvc0_channel_del(&chan);
97 return ret;
98 }
99
100 ret = nouveau_vm_ref(vm, &chan->vm, NULL);
101 if (ret) {
102 nvc0_channel_del(&chan);
103 return ret;
104 }
105
106 nv_wo32(chan->ramin, 0x0200, lower_32_bits(pgd->vinst));
107 nv_wo32(chan->ramin, 0x0204, upper_32_bits(pgd->vinst));
108 nv_wo32(chan->ramin, 0x0208, lower_32_bits(vm_size - 1));
109 nv_wo32(chan->ramin, 0x020c, upper_32_bits(vm_size - 1));
110
111 *pchan = chan;
112 return 0;
113}
114
115int
116nvc0_instmem_init(struct drm_device *dev)
117{
118 struct drm_nouveau_private *dev_priv = dev->dev_private;
119 struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
120 struct pci_dev *pdev = dev->pdev;
121 struct nvc0_instmem_priv *priv;
122 struct nouveau_vm *vm = NULL;
123 int ret;
124
125 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
126 if (!priv)
127 return -ENOMEM;
128 pinstmem->priv = priv;
129
130 /* BAR3 VM */
131 ret = nouveau_vm_new(dev, 0, pci_resource_len(pdev, 3), 0,
132 &dev_priv->bar3_vm);
133 if (ret)
134 goto error;
135
136 ret = nouveau_gpuobj_new(dev, NULL,
137 (pci_resource_len(pdev, 3) >> 12) * 8, 0,
138 NVOBJ_FLAG_DONT_MAP |
139 NVOBJ_FLAG_ZERO_ALLOC,
140 &dev_priv->bar3_vm->pgt[0].obj[0]);
141 if (ret)
142 goto error;
143 dev_priv->bar3_vm->pgt[0].refcount[0] = 1;
144
145 nv50_instmem_map(dev_priv->bar3_vm->pgt[0].obj[0]);
146
147 ret = nouveau_gpuobj_new(dev, NULL, 0x8000, 4096,
148 NVOBJ_FLAG_ZERO_ALLOC, &priv->bar3_pgd);
149 if (ret)
150 goto error;
151
152 ret = nouveau_vm_ref(dev_priv->bar3_vm, &vm, priv->bar3_pgd);
153 if (ret)
154 goto error;
155 nouveau_vm_ref(NULL, &vm, NULL);
156
157 ret = nvc0_channel_new(dev, 8192, dev_priv->bar3_vm, &priv->bar3,
158 priv->bar3_pgd, pci_resource_len(dev->pdev, 3));
159 if (ret)
160 goto error;
161
162 /* BAR1 VM */
163 ret = nouveau_vm_new(dev, 0, pci_resource_len(pdev, 1), 0, &vm);
164 if (ret)
165 goto error;
166
167 ret = nouveau_gpuobj_new(dev, NULL, 0x8000, 4096,
168 NVOBJ_FLAG_ZERO_ALLOC, &priv->bar1_pgd);
169 if (ret)
170 goto error;
171
172 ret = nouveau_vm_ref(vm, &dev_priv->bar1_vm, priv->bar1_pgd);
173 if (ret)
174 goto error;
175 nouveau_vm_ref(NULL, &vm, NULL);
176
177 ret = nvc0_channel_new(dev, 8192, dev_priv->bar1_vm, &priv->bar1,
178 priv->bar1_pgd, pci_resource_len(dev->pdev, 1));
179 if (ret)
180 goto error;
181
182 /* channel vm */
183 ret = nouveau_vm_new(dev, 0, (1ULL << 40), 0x0008000000ULL,
184 &dev_priv->chan_vm);
185 if (ret)
186 goto error;
187
188 nvc0_instmem_resume(dev);
189 return 0;
190error:
191 nvc0_instmem_takedown(dev);
192 return ret;
193}
194
195void
196nvc0_instmem_takedown(struct drm_device *dev)
197{
198 struct drm_nouveau_private *dev_priv = dev->dev_private;
199 struct nvc0_instmem_priv *priv = dev_priv->engine.instmem.priv;
200 struct nouveau_vm *vm = NULL;
201
202 nvc0_instmem_suspend(dev);
203
204 nv_wr32(dev, 0x1704, 0x00000000);
205 nv_wr32(dev, 0x1714, 0x00000000);
206
207 nouveau_vm_ref(NULL, &dev_priv->chan_vm, NULL);
208
209 nvc0_channel_del(&priv->bar1);
210 nouveau_vm_ref(NULL, &dev_priv->bar1_vm, priv->bar1_pgd);
211 nouveau_gpuobj_ref(NULL, &priv->bar1_pgd);
212
213 nvc0_channel_del(&priv->bar3);
214 nouveau_vm_ref(dev_priv->bar3_vm, &vm, NULL);
215 nouveau_vm_ref(NULL, &vm, priv->bar3_pgd);
216 nouveau_gpuobj_ref(NULL, &priv->bar3_pgd);
217 nouveau_gpuobj_ref(NULL, &dev_priv->bar3_vm->pgt[0].obj[0]);
218 nouveau_vm_ref(NULL, &dev_priv->bar3_vm, NULL);
219
220 dev_priv->engine.instmem.priv = NULL;
221 kfree(priv);
222}
223
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-25 15:02:24 -0400