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-rw-r--r--nouveau/bufctx.c160
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;
+}