| /* |
| * Copyright 2007 Nouveau Project |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include "nouveau_private.h" |
| |
| int |
| nouveau_channel_alloc(struct nouveau_device *dev, uint32_t fb_ctxdma, |
| uint32_t tt_ctxdma, struct nouveau_channel **chan) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(dev); |
| struct nouveau_channel_priv *nvchan; |
| unsigned i; |
| int ret; |
| |
| if (!nvdev || !chan || *chan) |
| return -EINVAL; |
| |
| nvchan = calloc(1, sizeof(struct nouveau_channel_priv)); |
| if (!nvchan) |
| return -ENOMEM; |
| nvchan->base.device = dev; |
| |
| nvchan->drm.fb_ctxdma_handle = fb_ctxdma; |
| nvchan->drm.tt_ctxdma_handle = tt_ctxdma; |
| ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_CHANNEL_ALLOC, |
| &nvchan->drm, sizeof(nvchan->drm)); |
| if (ret) { |
| free(nvchan); |
| return ret; |
| } |
| |
| nvchan->base.id = nvchan->drm.channel; |
| if (nouveau_grobj_ref(&nvchan->base, nvchan->drm.fb_ctxdma_handle, |
| &nvchan->base.vram) || |
| nouveau_grobj_ref(&nvchan->base, nvchan->drm.tt_ctxdma_handle, |
| &nvchan->base.gart)) { |
| nouveau_channel_free((void *)&nvchan); |
| return -EINVAL; |
| } |
| |
| /* Mark all DRM-assigned subchannels as in-use */ |
| for (i = 0; i < nvchan->drm.nr_subchan; i++) { |
| struct nouveau_grobj_priv *gr = calloc(1, sizeof(*gr)); |
| |
| gr->base.bound = NOUVEAU_GROBJ_BOUND_EXPLICIT; |
| gr->base.subc = i; |
| gr->base.handle = nvchan->drm.subchan[i].handle; |
| gr->base.grclass = nvchan->drm.subchan[i].grclass; |
| gr->base.channel = &nvchan->base; |
| |
| nvchan->base.subc[i].gr = &gr->base; |
| } |
| |
| ret = nouveau_bo_wrap(dev, nvchan->drm.notifier_handle, |
| &nvchan->notifier_bo); |
| if (!ret) |
| ret = nouveau_bo_map(nvchan->notifier_bo, NOUVEAU_BO_RDWR); |
| if (ret) { |
| nouveau_channel_free((void *)&nvchan); |
| return ret; |
| } |
| |
| ret = nouveau_grobj_alloc(&nvchan->base, 0x00000000, 0x0030, |
| &nvchan->base.nullobj); |
| if (ret) { |
| nouveau_channel_free((void *)&nvchan); |
| return ret; |
| } |
| |
| nouveau_pushbuf_init(&nvchan->base); |
| |
| *chan = &nvchan->base; |
| return 0; |
| } |
| |
| void |
| nouveau_channel_free(struct nouveau_channel **chan) |
| { |
| struct nouveau_channel_priv *nvchan; |
| struct nouveau_device_priv *nvdev; |
| struct drm_nouveau_channel_free cf; |
| |
| if (!chan || !*chan) |
| return; |
| nvchan = nouveau_channel(*chan); |
| *chan = NULL; |
| nvdev = nouveau_device(nvchan->base.device); |
| |
| FIRE_RING(&nvchan->base); |
| |
| nouveau_bo_unmap(nvchan->notifier_bo); |
| nouveau_bo_ref(NULL, &nvchan->notifier_bo); |
| |
| nouveau_grobj_free(&nvchan->base.vram); |
| nouveau_grobj_free(&nvchan->base.gart); |
| nouveau_grobj_free(&nvchan->base.nullobj); |
| |
| cf.channel = nvchan->drm.channel; |
| drmCommandWrite(nvdev->fd, DRM_NOUVEAU_CHANNEL_FREE, &cf, sizeof(cf)); |
| free(nvchan); |
| } |
| |
| |