diff options
Diffstat (limited to 'nouveau/bufctx.c')
| -rw-r--r-- | nouveau/bufctx.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/nouveau/bufctx.c b/nouveau/bufctx.c new file mode 100644 index 0000000..00924b3 --- /dev/null +++ b/nouveau/bufctx.c @@ -0,0 +1,160 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <stdbool.h> +#include <assert.h> +#include <errno.h> + +#include "libdrm_lists.h" + +#include "nouveau.h" +#include "private.h" + +struct nouveau_bufref_priv { + struct nouveau_bufref base; + struct nouveau_bufref_priv *next; + struct nouveau_bufctx *bufctx; +}; + +struct nouveau_bufbin_priv { + struct nouveau_bufref_priv *list; + int relocs; +}; + +struct nouveau_bufctx_priv { + struct nouveau_bufctx base; + struct nouveau_bufref_priv *free; + int nr_bins; + struct nouveau_bufbin_priv bins[]; +}; + +static inline struct nouveau_bufctx_priv * +nouveau_bufctx(struct nouveau_bufctx *bctx) +{ + return (struct nouveau_bufctx_priv *)bctx; +} + +drm_public int +nouveau_bufctx_new(struct nouveau_client *client, int bins, + struct nouveau_bufctx **pbctx) +{ + struct nouveau_bufctx_priv *priv; + + priv = calloc(1, sizeof(*priv) + sizeof(priv->bins[0]) * bins); + if (priv) { + DRMINITLISTHEAD(&priv->base.head); + DRMINITLISTHEAD(&priv->base.pending); + DRMINITLISTHEAD(&priv->base.current); + priv->base.client = client; + priv->nr_bins = bins; + *pbctx = &priv->base; + return 0; + } + + return -ENOMEM; +} + +drm_public void +nouveau_bufctx_del(struct nouveau_bufctx **pbctx) +{ + struct nouveau_bufctx_priv *pctx = nouveau_bufctx(*pbctx); + struct nouveau_bufref_priv *pref; + if (pctx) { + while (pctx->nr_bins--) + nouveau_bufctx_reset(&pctx->base, pctx->nr_bins); + while ((pref = pctx->free)) { + pctx->free = pref->next; + free(pref); + } + free(pctx); + *pbctx = NULL; + } +} + +drm_public void +nouveau_bufctx_reset(struct nouveau_bufctx *bctx, int bin) +{ + struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); + struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; + struct nouveau_bufref_priv *pref; + + while ((pref = pbin->list)) { + DRMLISTDELINIT(&pref->base.thead); + pbin->list = pref->next; + pref->next = pctx->free; + pctx->free = pref; + } + + bctx->relocs -= pbin->relocs; + pbin->relocs = 0; +} + +drm_public struct nouveau_bufref * +nouveau_bufctx_refn(struct nouveau_bufctx *bctx, int bin, + struct nouveau_bo *bo, uint32_t flags) +{ + struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); + struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; + struct nouveau_bufref_priv *pref = pctx->free; + + if (!pref) + pref = malloc(sizeof(*pref)); + else + pctx->free = pref->next; + + if (pref) { + pref->base.bo = bo; + pref->base.flags = flags; + pref->base.packet = 0; + + DRMLISTADDTAIL(&pref->base.thead, &bctx->pending); + pref->bufctx = bctx; + pref->next = pbin->list; + pbin->list = pref; + } + + return &pref->base; +} + +drm_public struct nouveau_bufref * +nouveau_bufctx_mthd(struct nouveau_bufctx *bctx, int bin, uint32_t packet, + struct nouveau_bo *bo, uint64_t data, uint32_t flags, + uint32_t vor, uint32_t tor) +{ + struct nouveau_bufctx_priv *pctx = nouveau_bufctx(bctx); + struct nouveau_bufbin_priv *pbin = &pctx->bins[bin]; + struct nouveau_bufref *bref = nouveau_bufctx_refn(bctx, bin, bo, flags); + if (bref) { + bref->packet = packet; + bref->data = data; + bref->vor = vor; + bref->tor = tor; + pbin->relocs++; + bctx->relocs++; + } + return bref; +} |