[PATCH libdrm 12/25] tegra: Add job and push buffer APIs
Thierry Reding
thierry.reding at gmail.com
Fri Aug 27 13:22:52 UTC 2021
From: Thierry Reding <treding at nvidia.com>
These new functions can be used to create a job on a given channel, add
commands to the job using its push buffer and submit the job.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
tegra/job.c | 164 ++++++++++++++++++++++++++++++++++++++++
tegra/meson.build | 2 +-
tegra/private.h | 32 ++++++++
tegra/pushbuf.c | 136 +++++++++++++++++++++++++++++++++
tegra/tegra-symbols.txt | 7 ++
tegra/tegra.h | 34 +++++++++
6 files changed, 374 insertions(+), 1 deletion(-)
create mode 100644 tegra/job.c
create mode 100644 tegra/pushbuf.c
diff --git a/tegra/job.c b/tegra/job.c
new file mode 100644
index 000000000000..c8c94e131ef0
--- /dev/null
+++ b/tegra/job.c
@@ -0,0 +1,164 @@
+/*
+ * 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 <time.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/poll.h>
+
+#include "private.h"
+
+struct drm_tegra_submit_cmd *
+drm_tegra_job_add_command(struct drm_tegra_job *job, uint32_t type,
+ uint32_t flags)
+{
+ struct drm_tegra_submit_cmd *commands, *command;
+ size_t size;
+
+ size = (job->num_commands + 1) * sizeof(*commands);
+
+ commands = realloc(job->commands, size);
+ if (!commands)
+ return NULL;
+
+ command = &commands[job->num_commands];
+ memset(command, 0, sizeof(*command));
+ command->type = type;
+ command->flags = flags;
+
+ job->commands = commands;
+ job->num_commands++;
+
+ return command;
+}
+
+drm_public int
+drm_tegra_job_new(struct drm_tegra_channel *channel,
+ struct drm_tegra_job **jobp)
+{
+ struct drm_tegra_job *job;
+
+ job = calloc(1, sizeof(*job));
+ if (!job)
+ return -ENOMEM;
+
+ job->page_size = sysconf(_SC_PAGESIZE);
+ job->channel = channel;
+
+ *jobp = job;
+
+ return 0;
+}
+
+drm_public int drm_tegra_job_free(struct drm_tegra_job *job)
+{
+ if (!job)
+ return -EINVAL;
+
+ if (job->pushbuf)
+ drm_tegra_pushbuf_free(job->pushbuf);
+
+ if (job->commands)
+ free(job->commands);
+
+ if (job->buffers)
+ free(job->buffers);
+
+ free(job);
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_job_get_pushbuf(struct drm_tegra_job *job,
+ struct drm_tegra_pushbuf **pushbufp)
+{
+ struct drm_tegra_pushbuf *pushbuf;
+
+ if (!job->pushbuf) {
+ pushbuf = calloc(1, sizeof(*pushbuf));
+ if (!pushbuf)
+ return -ENOMEM;
+
+ pushbuf->job = job;
+
+ pushbuf->start = calloc(1, job->page_size);
+ if (!pushbuf->start) {
+ free(pushbuf);
+ return -ENOMEM;
+ }
+
+ pushbuf->end = pushbuf->start + job->page_size / 4;
+ pushbuf->ptr = pushbuf->start;
+
+ job->pushbuf = pushbuf;
+ }
+
+ *pushbufp = job->pushbuf;
+
+ return 0;
+}
+
+drm_public int
+drm_tegra_job_submit(struct drm_tegra_job *job, struct drm_tegra_fence *fence)
+{
+ struct drm_tegra_channel *channel = job->channel;
+ struct drm_tegra *drm = channel->drm;
+ struct drm_tegra_channel_submit args;
+ int err;
+
+ memset(&args, 0, sizeof(args));
+ args.context = channel->context;
+ args.num_bufs = job->num_buffers;
+ args.num_cmds = job->num_commands;
+ args.gather_data_words = job->pushbuf->ptr - job->pushbuf->start;
+ args.syncpt.id = job->syncpt.id;
+ args.syncpt.increments = job->syncpt.increments;
+
+ args.bufs_ptr = (uintptr_t)job->buffers;
+ args.cmds_ptr = (uintptr_t)job->commands;
+ args.gather_data_ptr = (uintptr_t)job->pushbuf->start;
+
+ err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_SUBMIT, &args);
+ if (err < 0)
+ return -errno;
+
+ job->syncpt.fence = args.syncpt.value;
+
+ if (fence) {
+ fence->drm = drm;
+ fence->syncpt = job->syncpt.id;
+ fence->value = job->syncpt.fence;
+ }
+
+ return 0;
+}
diff --git a/tegra/meson.build b/tegra/meson.build
index e115966fc8ed..38e43039837c 100644
--- a/tegra/meson.build
+++ b/tegra/meson.build
@@ -22,7 +22,7 @@ libdrm_tegra = library(
'drm_tegra',
[
files(
- 'channel.c', 'private.h', 'tegra.c'
+ 'channel.c', 'job.c', 'private.h', 'pushbuf.c', 'tegra.c'
),
config_file
],
diff --git a/tegra/private.h b/tegra/private.h
index 7c05276707bf..970ee8ad66d4 100644
--- a/tegra/private.h
+++ b/tegra/private.h
@@ -72,4 +72,36 @@ struct drm_tegra_mapping {
uint32_t id;
};
+struct drm_tegra_pushbuf {
+ struct drm_tegra_job *job;
+
+ uint32_t *start;
+ uint32_t *end;
+ uint32_t *ptr;
+};
+
+void drm_tegra_pushbuf_free(struct drm_tegra_pushbuf *pushbuf);
+
+struct drm_tegra_job {
+ struct drm_tegra_channel *channel;
+ struct drm_tegra_pushbuf *pushbuf;
+ size_t page_size;
+
+ struct drm_tegra_submit_cmd *commands;
+ unsigned int num_commands;
+
+ struct drm_tegra_submit_buf *buffers;
+ unsigned int num_buffers;
+
+ struct {
+ uint32_t id;
+ uint32_t increments;
+ uint32_t fence;
+ } syncpt;
+};
+
+struct drm_tegra_submit_cmd *
+drm_tegra_job_add_command(struct drm_tegra_job *job, uint32_t type,
+ uint32_t flags);
+
#endif /* __DRM_TEGRA_PRIVATE_H__ */
diff --git a/tegra/pushbuf.c b/tegra/pushbuf.c
new file mode 100644
index 000000000000..380a50abbbb0
--- /dev/null
+++ b/tegra/pushbuf.c
@@ -0,0 +1,136 @@
+/*
+ * 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_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;
+}
diff --git a/tegra/tegra-symbols.txt b/tegra/tegra-symbols.txt
index c16a351171f1..da3972cb99e1 100644
--- a/tegra/tegra-symbols.txt
+++ b/tegra/tegra-symbols.txt
@@ -15,4 +15,11 @@ drm_tegra_channel_map
drm_tegra_channel_open
drm_tegra_channel_unmap
drm_tegra_close
+drm_tegra_job_free
+drm_tegra_job_get_pushbuf
+drm_tegra_job_new
+drm_tegra_job_submit
drm_tegra_new
+drm_tegra_pushbuf_begin
+drm_tegra_pushbuf_end
+drm_tegra_pushbuf_relocate
diff --git a/tegra/tegra.h b/tegra/tegra.h
index 621fef6b7000..0213e3b11e04 100644
--- a/tegra/tegra.h
+++ b/tegra/tegra.h
@@ -63,6 +63,22 @@ int drm_tegra_bo_import(struct drm_tegra *drm, int fd,
struct drm_tegra_channel;
struct drm_tegra_mapping;
+struct drm_tegra_pushbuf;
+struct drm_tegra_job;
+
+enum drm_tegra_sync_cond {
+ DRM_TEGRA_SYNC_COND_IMMEDIATE,
+ DRM_TEGRA_SYNC_COND_OP_DONE,
+ DRM_TEGRA_SYNC_COND_RD_DONE,
+ DRM_TEGRA_SYNC_COND_WR_SAFE,
+ DRM_TEGRA_SYNC_COND_MAX,
+ };
+
+struct drm_tegra_fence {
+ struct drm_tegra *drm;
+ uint32_t syncpt;
+ uint32_t value;
+};
int drm_tegra_channel_open(struct drm_tegra *drm,
enum drm_tegra_class client,
@@ -74,4 +90,22 @@ int drm_tegra_channel_map(struct drm_tegra_channel *channel,
struct drm_tegra_mapping **mapp);
int drm_tegra_channel_unmap(struct drm_tegra_mapping *map);
+int drm_tegra_job_new(struct drm_tegra_channel *channel,
+ struct drm_tegra_job **jobp);
+int drm_tegra_job_free(struct drm_tegra_job *job);
+int drm_tegra_job_get_pushbuf(struct drm_tegra_job *job,
+ struct drm_tegra_pushbuf **pushbufp);
+int drm_tegra_job_submit(struct drm_tegra_job *job,
+ struct drm_tegra_fence *fence);
+int drm_tegra_job_wait(struct drm_tegra_job *job, unsigned long timeout);
+
+int drm_tegra_pushbuf_begin(struct drm_tegra_pushbuf *pushbuf,
+ unsigned int words, uint32_t **ptrp);
+int drm_tegra_pushbuf_end(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr);
+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);
+
#endif /* __DRM_TEGRA_H__ */
--
2.32.0
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