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