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-rw-r--r--tegra/pushbuf.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/tegra/pushbuf.c b/tegra/pushbuf.c
new file mode 100644
index 0000000..0c0212e
--- /dev/null
+++ b/tegra/pushbuf.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright © 2012, 2013 Thierry Reding
+ * Copyright © 2013 Erik Faye-Lund
+ * Copyright © 2014 NVIDIA Corporation
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util_math.h"
+#include "private.h"
+
+#define HOST1X_OPCODE_NONINCR(offset, count) \
+ ((0x2 << 28) | (((offset) & 0xfff) << 16) | ((count) & 0xffff))
+
+static inline unsigned int
+drm_tegra_pushbuf_get_offset(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr)
+{
+ return ptr - pushbuf->start;
+}
+
+void drm_tegra_pushbuf_free(struct drm_tegra_pushbuf *pushbuf)
+{
+ if (pushbuf->start)
+ free(pushbuf->start);
+
+ free(pushbuf);
+}
+
+/**
+ * drm_tegra_pushbuf_begin() - prepare push buffer for a series of pushes
+ * @pushbuf: push buffer
+ * @words: maximum number of words in series of pushes to follow
+ */
+drm_public int
+drm_tegra_pushbuf_begin(struct drm_tegra_pushbuf *pushbuf,
+ unsigned int words, uint32_t **ptrp)
+{
+ struct drm_tegra_job *job = pushbuf->job;
+ unsigned long offset;
+ size_t size;
+ void *ptr;
+
+ if (pushbuf->ptr + words >= pushbuf->end) {
+ words = pushbuf->end - pushbuf->start + words;
+ size = ALIGN(words * 4, job->page_size);
+ offset = pushbuf->ptr - pushbuf->start;
+
+ ptr = realloc(pushbuf->start, size);
+ if (!ptr)
+ return -ENOMEM;
+
+ pushbuf->start = ptr;
+ pushbuf->end = pushbuf->start + size / 4;
+ pushbuf->ptr = pushbuf->start + offset;
+ }
+
+ if (ptrp)
+ *ptrp = pushbuf->ptr;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_pushbuf_end(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr)
+{
+ struct drm_tegra_submit_cmd *command;
+
+ command = drm_tegra_job_add_command(pushbuf->job,
+ DRM_TEGRA_SUBMIT_CMD_GATHER_UPTR,
+ 0);
+ if (!command)
+ return -ENOMEM;
+
+ command->gather_uptr.words = ptr - pushbuf->start;
+ pushbuf->ptr = ptr;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_pushbuf_wait(struct drm_tegra_pushbuf *pushbuf,
+ struct drm_tegra_syncpoint *syncpt,
+ uint32_t value)
+{
+ struct drm_tegra_submit_cmd *command;
+
+ command = drm_tegra_job_add_command(pushbuf->job,
+ DRM_TEGRA_SUBMIT_CMD_WAIT_SYNCPT,
+ 0);
+ if (!command)
+ return -ENOMEM;
+
+ command->wait_syncpt.id = syncpt->id;
+ command->wait_syncpt.value = value;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_pushbuf_relocate(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp,
+ struct drm_tegra_mapping *target,
+ unsigned long offset, unsigned int shift,
+ uint32_t flags)
+{
+ struct drm_tegra_submit_buf *buffers, *buffer;
+ struct drm_tegra_job *job = pushbuf->job;
+ size_t size;
+
+ size = (job->num_buffers + 1) * sizeof(*buffer);
+
+ buffers = realloc(job->buffers, size);
+ if (!buffers)
+ return -ENOMEM;
+
+ buffer = &buffers[job->num_buffers];
+
+ memset(buffer, 0, sizeof(*buffer));
+ buffer->mapping = target->id;
+ buffer->flags = flags;
+ buffer->reloc.target_offset = offset;
+ buffer->reloc.gather_offset_words = drm_tegra_pushbuf_get_offset(pushbuf,
+ *ptrp);
+ buffer->reloc.shift = shift;
+
+ *(*ptrp)++ = 0xdeadbeef;
+
+ job->buffers = buffers;
+ job->num_buffers++;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_pushbuf_sync(struct drm_tegra_pushbuf *pushbuf,
+ struct drm_tegra_syncpoint *syncpt,
+ unsigned int count)
+{
+ struct drm_tegra_job *job = pushbuf->job;
+
+ job->syncpt.increments += count;
+ job->syncpt.id = syncpt->id;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_pushbuf_sync_cond(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp,
+ struct drm_tegra_syncpoint *syncpt,
+ enum drm_tegra_sync_cond cond)
+{
+ struct drm_tegra_channel *channel = pushbuf->job->channel;
+
+ if (cond >= DRM_TEGRA_SYNC_COND_MAX)
+ return -EINVAL;
+
+ *(*ptrp)++ = HOST1X_OPCODE_NONINCR(0x0, 0x1);
+ *(*ptrp)++ = cond << channel->cond_shift | syncpt->id;
+
+ return drm_tegra_pushbuf_sync(pushbuf, syncpt, 1);
+}