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 = nouveau_mem_init_heap(&chan->notifier_heap, 0, ntfy->bo.mem.size);
62 chan->notifier_bo = ntfy;
65 mutex_lock(&dev->struct_mutex);
66 drm_gem_object_unreference(ntfy->gem);
67 mutex_unlock(&dev->struct_mutex);
74 nouveau_notifier_takedown_channel(struct nouveau_channel *chan)
76 struct drm_device *dev = chan->dev;
78 if (!chan->notifier_bo)
81 nouveau_bo_unmap(chan->notifier_bo);
82 mutex_lock(&dev->struct_mutex);
83 nouveau_bo_unpin(chan->notifier_bo);
84 drm_gem_object_unreference(chan->notifier_bo->gem);
85 mutex_unlock(&dev->struct_mutex);
86 nouveau_mem_takedown(&chan->notifier_heap);
90 nouveau_notifier_gpuobj_dtor(struct drm_device *dev,
91 struct nouveau_gpuobj *gpuobj)
96 nouveau_mem_free_block(gpuobj->priv);
100 nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
101 int size, uint32_t *b_offset)
103 struct drm_device *dev = chan->dev;
104 struct drm_nouveau_private *dev_priv = dev->dev_private;
105 struct nouveau_gpuobj *nobj = NULL;
106 struct mem_block *mem;
110 if (!chan->notifier_heap) {
111 NV_ERROR(dev, "Channel %d doesn't have a notifier heap!\n",
116 mem = nouveau_mem_alloc_block(chan->notifier_heap, size, 0,
117 (struct drm_file *)-2, 0);
119 NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
123 offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT;
124 if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) {
125 target = NV_DMA_TARGET_VIDMEM;
127 if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) {
128 if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA &&
129 dev_priv->card_type < NV_50) {
130 ret = nouveau_sgdma_get_page(dev, offset, &offset);
133 target = NV_DMA_TARGET_PCI;
135 target = NV_DMA_TARGET_AGP;
136 if (dev_priv->card_type >= NV_50)
137 offset += dev_priv->vm_gart_base;
140 NV_ERROR(dev, "Bad DMA target, mem_type %d!\n",
141 chan->notifier_bo->bo.mem.mem_type);
144 offset += mem->start;
146 ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset,
147 mem->size, NV_DMA_ACCESS_RW, target,
150 nouveau_mem_free_block(mem);
151 NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
154 nobj->dtor = nouveau_notifier_gpuobj_dtor;
157 ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL);
159 nouveau_gpuobj_del(dev, &nobj);
160 nouveau_mem_free_block(mem);
161 NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret);
165 *b_offset = mem->start;
170 nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset)
172 if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor)
176 struct mem_block *mem = nobj->priv;
178 if (*poffset >= mem->size)
181 *poffset += mem->start;
188 nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
189 struct drm_file *file_priv)
191 struct drm_nouveau_notifierobj_alloc *na = data;
192 struct nouveau_channel *chan;
195 NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
196 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan);
198 ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset);