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 32int 33nouveau_notifier_init_channel(struct nouveau_channel *chan) 34{ 35 struct drm_device *dev = chan->dev; 36 int flags, ret; 37 38 flags = (NOUVEAU_MEM_PCI | NOUVEAU_MEM_MAPPED | 39 NOUVEAU_MEM_FB_ACCEPTABLE); 40 41 chan->notifier_block = nouveau_mem_alloc(dev, 0, PAGE_SIZE, flags, 42 (struct drm_file *)-2); 43 if (!chan->notifier_block) 44 return -ENOMEM; 45 DRM_DEBUG("Allocated notifier block in 0x%08x\n", 46 chan->notifier_block->flags); 47 48 ret = nouveau_mem_init_heap(&chan->notifier_heap, 49 0, chan->notifier_block->size); 50 if (ret) 51 return ret; 52 53 return 0; 54} 55 56void 57nouveau_notifier_takedown_channel(struct nouveau_channel *chan) 58{ 59 struct drm_device *dev = chan->dev; 60 61 if (chan->notifier_block) { 62 nouveau_mem_free(dev, chan->notifier_block); 63 chan->notifier_block = NULL; 64 } 65 66 nouveau_mem_takedown(&chan->notifier_heap); 67} 68 69static void 70nouveau_notifier_gpuobj_dtor(struct drm_device *dev, 71 struct nouveau_gpuobj *gpuobj) 72{ 73 DRM_DEBUG("\n"); 74 75 if (gpuobj->priv) 76 nouveau_mem_free_block(gpuobj->priv); 77} 78 79int 80nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, 81 int count, uint32_t *b_offset) 82{ 83 struct drm_device *dev = chan->dev; 84 struct drm_nouveau_private *dev_priv = dev->dev_private; 85 struct nouveau_gpuobj *nobj = NULL; 86 struct mem_block *mem; 87 uint32_t offset; 88 int target, ret; 89 90 if (!chan->notifier_heap) { 91 DRM_ERROR("Channel %d doesn't have a notifier heap!\n", 92 chan->id); 93 return -EINVAL; 94 } 95 96 mem = nouveau_mem_alloc_block(chan->notifier_heap, count*32, 0, 97 (struct drm_file *)-2, 0); 98 if (!mem) { 99 DRM_ERROR("Channel %d notifier block full\n", chan->id); 100 return -ENOMEM; 101 } 102 mem->flags = NOUVEAU_MEM_NOTIFIER; 103 104 offset = chan->notifier_block->start; 105 if (chan->notifier_block->flags & NOUVEAU_MEM_FB) { 106 target = NV_DMA_TARGET_VIDMEM; 107 } else 108 if (chan->notifier_block->flags & NOUVEAU_MEM_AGP) { 109 if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA && 110 dev_priv->card_type < NV_50) { 111 ret = nouveau_sgdma_get_page(dev, offset, &offset); 112 if (ret) 113 return ret; 114 target = NV_DMA_TARGET_PCI; 115 } else { 116 target = NV_DMA_TARGET_AGP; 117 } 118 } else 119 if (chan->notifier_block->flags & NOUVEAU_MEM_PCI) { 120 target = NV_DMA_TARGET_PCI_NONLINEAR; 121 } else { 122 DRM_ERROR("Bad DMA target, flags 0x%08x!\n", 123 chan->notifier_block->flags); 124 return -EINVAL; 125 } 126 offset += mem->start; 127 128 if ((ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, 129 offset, mem->size, 130 NV_DMA_ACCESS_RW, target, &nobj))) { 131 nouveau_mem_free_block(mem); 132 DRM_ERROR("Error creating notifier ctxdma: %d\n", ret); 133 return ret; 134 } 135 nobj->dtor = nouveau_notifier_gpuobj_dtor; 136 nobj->priv = mem; 137 138 if ((ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL))) { 139 nouveau_gpuobj_del(dev, &nobj); 140 nouveau_mem_free_block(mem); 141 DRM_ERROR("Error referencing notifier ctxdma: %d\n", ret); 142 return ret; 143 } 144 145 *b_offset = mem->start; 146 return 0; 147} 148 149int 150nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, 151 struct drm_file *file_priv) 152{ 153 struct drm_nouveau_notifierobj_alloc *na = data; 154 struct nouveau_channel *chan; 155 int ret; 156 157 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 158 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan); 159 160 ret = nouveau_notifier_alloc(chan, na->handle, na->count, &na->offset); 161 if (ret) 162 return ret; 163 164 return 0; 165} 166