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"
33 nouveau_notifier_init_channel(struct nouveau_channel *chan)
35 struct drm_device *dev = chan->dev;
36 struct nouveau_bo *ntfy = NULL;
40 if (nouveau_vram_notify)
41 flags = TTM_PL_FLAG_VRAM;
43 flags = TTM_PL_FLAG_TT;
45 ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags,
46 0, 0x0000, false, true, &ntfy);
50 ret = nouveau_bo_pin(ntfy, flags);
54 ret = nouveau_bo_map(ntfy);
58 ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size);
62 chan->notifier_bo = ntfy;
65 drm_gem_object_unreference_unlocked(ntfy->gem);
71 nouveau_notifier_takedown_channel(struct nouveau_channel *chan)
73 struct drm_device *dev = chan->dev;
75 if (!chan->notifier_bo)
78 nouveau_bo_unmap(chan->notifier_bo);
79 mutex_lock(&dev->struct_mutex);
80 nouveau_bo_unpin(chan->notifier_bo);
81 mutex_unlock(&dev->struct_mutex);
82 drm_gem_object_unreference_unlocked(chan->notifier_bo->gem);
83 drm_mm_takedown(&chan->notifier_heap);
87 nouveau_notifier_gpuobj_dtor(struct drm_device *dev,
88 struct nouveau_gpuobj *gpuobj)
93 drm_mm_put_block(gpuobj->priv);
97 nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
98 int size, uint32_t *b_offset)
100 struct drm_device *dev = chan->dev;
101 struct drm_nouveau_private *dev_priv = dev->dev_private;
102 struct nouveau_gpuobj *nobj = NULL;
103 struct drm_mm_node *mem;
107 mem = drm_mm_search_free(&chan->notifier_heap, size, 0, 0);
109 mem = drm_mm_get_block(mem, size, 0);
111 NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
115 offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT;
116 if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) {
117 target = NV_DMA_TARGET_VIDMEM;
119 if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) {
120 if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA &&
121 dev_priv->card_type < NV_50) {
122 ret = nouveau_sgdma_get_page(dev, offset, &offset);
125 target = NV_DMA_TARGET_PCI;
127 target = NV_DMA_TARGET_AGP;
128 if (dev_priv->card_type >= NV_50)
129 offset += dev_priv->vm_gart_base;
132 NV_ERROR(dev, "Bad DMA target, mem_type %d!\n",
133 chan->notifier_bo->bo.mem.mem_type);
136 offset += mem->start;
138 ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset,
139 mem->size, NV_DMA_ACCESS_RW, target,
142 drm_mm_put_block(mem);
143 NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
146 nobj->dtor = nouveau_notifier_gpuobj_dtor;
149 ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL);
151 nouveau_gpuobj_del(dev, &nobj);
152 drm_mm_put_block(mem);
153 NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret);
157 *b_offset = mem->start;
162 nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset)
164 if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor)
168 struct drm_mm_node *mem = nobj->priv;
170 if (*poffset >= mem->size)
173 *poffset += mem->start;
180 nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
181 struct drm_file *file_priv)
183 struct drm_nouveau_notifierobj_alloc *na = data;
184 struct nouveau_channel *chan;
187 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
188 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan);
190 ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset);