2 * Copyright (C) 2007 Ben Skeggs.
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 #include "nouveau_drv.h"
31 #include "nouveau_ramht.h"
34 nouveau_notifier_init_channel(struct nouveau_channel *chan)
36 struct drm_device *dev = chan->dev;
37 struct nouveau_bo *ntfy = NULL;
41 if (nouveau_vram_notify)
42 flags = TTM_PL_FLAG_VRAM;
44 flags = TTM_PL_FLAG_TT;
46 ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags,
47 0, 0x0000, false, true, &ntfy);
51 ret = nouveau_bo_pin(ntfy, flags);
55 ret = nouveau_bo_map(ntfy);
59 ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size);
63 chan->notifier_bo = ntfy;
66 drm_gem_object_unreference_unlocked(ntfy->gem);
72 nouveau_notifier_takedown_channel(struct nouveau_channel *chan)
74 struct drm_device *dev = chan->dev;
76 if (!chan->notifier_bo)
79 nouveau_bo_unmap(chan->notifier_bo);
80 mutex_lock(&dev->struct_mutex);
81 nouveau_bo_unpin(chan->notifier_bo);
82 mutex_unlock(&dev->struct_mutex);
83 drm_gem_object_unreference_unlocked(chan->notifier_bo->gem);
84 drm_mm_takedown(&chan->notifier_heap);
88 nouveau_notifier_gpuobj_dtor(struct drm_device *dev,
89 struct nouveau_gpuobj *gpuobj)
94 drm_mm_put_block(gpuobj->priv);
98 nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
99 int size, uint32_t start, uint32_t end,
102 struct drm_device *dev = chan->dev;
103 struct nouveau_gpuobj *nobj = NULL;
104 struct drm_mm_node *mem;
108 mem = drm_mm_search_free_in_range(&chan->notifier_heap, size, 0,
111 mem = drm_mm_get_block_range(mem, size, 0, start, end);
113 NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
117 if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM)
118 target = NV_MEM_TARGET_VRAM;
120 target = NV_MEM_TARGET_GART;
121 offset = chan->notifier_bo->bo.mem.start << PAGE_SHIFT;
122 offset += mem->start;
124 ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset,
125 mem->size, NV_MEM_ACCESS_RW, target,
128 drm_mm_put_block(mem);
129 NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
132 nobj->dtor = nouveau_notifier_gpuobj_dtor;
135 ret = nouveau_ramht_insert(chan, handle, nobj);
136 nouveau_gpuobj_ref(NULL, &nobj);
138 drm_mm_put_block(mem);
139 NV_ERROR(dev, "Error adding notifier to ramht: %d\n", ret);
143 *b_offset = mem->start;
148 nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset)
150 if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor)
154 struct drm_mm_node *mem = nobj->priv;
156 if (*poffset >= mem->size)
159 *poffset += mem->start;
166 nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
167 struct drm_file *file_priv)
169 struct drm_nouveau_private *dev_priv = dev->dev_private;
170 struct drm_nouveau_notifierobj_alloc *na = data;
171 struct nouveau_channel *chan;
174 /* completely unnecessary for these chipsets... */
175 if (unlikely(dev_priv->card_type >= NV_C0))
178 chan = nouveau_channel_get(dev, file_priv, na->channel);
180 return PTR_ERR(chan);
182 ret = nouveau_notifier_alloc(chan, na->handle, na->size, 0, 0x1000,
184 nouveau_channel_put(&chan);