Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Ben Skeggs. |
| 3 | * |
| 4 | * All Rights Reserved. |
| 5 | * |
| 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: |
| 13 | * |
| 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. |
| 17 | * |
| 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. |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include "drmP.h" |
| 29 | #include "drm.h" |
| 30 | #include "nouveau_drv.h" |
| 31 | |
| 32 | int |
| 33 | nouveau_notifier_init_channel(struct nouveau_channel *chan) |
| 34 | { |
| 35 | struct drm_device *dev = chan->dev; |
| 36 | struct nouveau_bo *ntfy = NULL; |
Ben Skeggs | f927b89 | 2010-01-27 14:29:05 +1000 | [diff] [blame] | 37 | uint32_t flags; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 38 | int ret; |
| 39 | |
Ben Skeggs | f927b89 | 2010-01-27 14:29:05 +1000 | [diff] [blame] | 40 | if (nouveau_vram_notify) |
| 41 | flags = TTM_PL_FLAG_VRAM; |
| 42 | else |
| 43 | flags = TTM_PL_FLAG_TT; |
| 44 | |
| 45 | ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags, |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 46 | 0, 0x0000, false, true, &ntfy); |
| 47 | if (ret) |
| 48 | return ret; |
| 49 | |
Ben Skeggs | f927b89 | 2010-01-27 14:29:05 +1000 | [diff] [blame] | 50 | ret = nouveau_bo_pin(ntfy, flags); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 51 | if (ret) |
| 52 | goto out_err; |
| 53 | |
| 54 | ret = nouveau_bo_map(ntfy); |
| 55 | if (ret) |
| 56 | goto out_err; |
| 57 | |
| 58 | ret = nouveau_mem_init_heap(&chan->notifier_heap, 0, ntfy->bo.mem.size); |
| 59 | if (ret) |
| 60 | goto out_err; |
| 61 | |
| 62 | chan->notifier_bo = ntfy; |
| 63 | out_err: |
Luca Barbieri | bc9025b | 2010-02-09 05:49:12 +0000 | [diff] [blame] | 64 | if (ret) |
| 65 | drm_gem_object_unreference_unlocked(ntfy->gem); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 66 | |
| 67 | return ret; |
| 68 | } |
| 69 | |
| 70 | void |
| 71 | nouveau_notifier_takedown_channel(struct nouveau_channel *chan) |
| 72 | { |
| 73 | struct drm_device *dev = chan->dev; |
| 74 | |
| 75 | if (!chan->notifier_bo) |
| 76 | return; |
| 77 | |
| 78 | nouveau_bo_unmap(chan->notifier_bo); |
| 79 | mutex_lock(&dev->struct_mutex); |
| 80 | nouveau_bo_unpin(chan->notifier_bo); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 81 | mutex_unlock(&dev->struct_mutex); |
Luca Barbieri | bc9025b | 2010-02-09 05:49:12 +0000 | [diff] [blame] | 82 | drm_gem_object_unreference_unlocked(chan->notifier_bo->gem); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 83 | nouveau_mem_takedown(&chan->notifier_heap); |
| 84 | } |
| 85 | |
| 86 | static void |
| 87 | nouveau_notifier_gpuobj_dtor(struct drm_device *dev, |
| 88 | struct nouveau_gpuobj *gpuobj) |
| 89 | { |
| 90 | NV_DEBUG(dev, "\n"); |
| 91 | |
| 92 | if (gpuobj->priv) |
| 93 | nouveau_mem_free_block(gpuobj->priv); |
| 94 | } |
| 95 | |
| 96 | int |
| 97 | nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, |
| 98 | int size, uint32_t *b_offset) |
| 99 | { |
| 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 mem_block *mem; |
| 104 | uint32_t offset; |
| 105 | int target, ret; |
| 106 | |
| 107 | if (!chan->notifier_heap) { |
| 108 | NV_ERROR(dev, "Channel %d doesn't have a notifier heap!\n", |
| 109 | chan->id); |
| 110 | return -EINVAL; |
| 111 | } |
| 112 | |
| 113 | mem = nouveau_mem_alloc_block(chan->notifier_heap, size, 0, |
| 114 | (struct drm_file *)-2, 0); |
| 115 | if (!mem) { |
| 116 | NV_ERROR(dev, "Channel %d notifier block full\n", chan->id); |
| 117 | return -ENOMEM; |
| 118 | } |
| 119 | |
| 120 | offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT; |
| 121 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) { |
| 122 | target = NV_DMA_TARGET_VIDMEM; |
| 123 | } else |
| 124 | if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) { |
| 125 | if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA && |
| 126 | dev_priv->card_type < NV_50) { |
| 127 | ret = nouveau_sgdma_get_page(dev, offset, &offset); |
| 128 | if (ret) |
| 129 | return ret; |
| 130 | target = NV_DMA_TARGET_PCI; |
| 131 | } else { |
| 132 | target = NV_DMA_TARGET_AGP; |
Ben Skeggs | f927b89 | 2010-01-27 14:29:05 +1000 | [diff] [blame] | 133 | if (dev_priv->card_type >= NV_50) |
| 134 | offset += dev_priv->vm_gart_base; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 135 | } |
| 136 | } else { |
| 137 | NV_ERROR(dev, "Bad DMA target, mem_type %d!\n", |
| 138 | chan->notifier_bo->bo.mem.mem_type); |
| 139 | return -EINVAL; |
| 140 | } |
| 141 | offset += mem->start; |
| 142 | |
| 143 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset, |
| 144 | mem->size, NV_DMA_ACCESS_RW, target, |
| 145 | &nobj); |
| 146 | if (ret) { |
| 147 | nouveau_mem_free_block(mem); |
| 148 | NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret); |
| 149 | return ret; |
| 150 | } |
| 151 | nobj->dtor = nouveau_notifier_gpuobj_dtor; |
| 152 | nobj->priv = mem; |
| 153 | |
| 154 | ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL); |
| 155 | if (ret) { |
| 156 | nouveau_gpuobj_del(dev, &nobj); |
| 157 | nouveau_mem_free_block(mem); |
| 158 | NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret); |
| 159 | return ret; |
| 160 | } |
| 161 | |
| 162 | *b_offset = mem->start; |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | int |
| 167 | nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset) |
| 168 | { |
| 169 | if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor) |
| 170 | return -EINVAL; |
| 171 | |
| 172 | if (poffset) { |
| 173 | struct mem_block *mem = nobj->priv; |
| 174 | |
| 175 | if (*poffset >= mem->size) |
| 176 | return false; |
| 177 | |
| 178 | *poffset += mem->start; |
| 179 | } |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | int |
| 185 | nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, |
| 186 | struct drm_file *file_priv) |
| 187 | { |
| 188 | struct drm_nouveau_notifierobj_alloc *na = data; |
| 189 | struct nouveau_channel *chan; |
| 190 | int ret; |
| 191 | |
| 192 | NOUVEAU_CHECK_INITIALISED_WITH_RETURN; |
| 193 | NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan); |
| 194 | |
| 195 | ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset); |
| 196 | if (ret) |
| 197 | return ret; |
| 198 | |
| 199 | return 0; |
| 200 | } |