From: Thierry Reding treding@nvidia.com
These new functions can be used to allocate and free syncpoints, as well as wait for a syncpoint threshold to be reached. Jobs can also be waited on if a syncpoint was attached to them.
Signed-off-by: Thierry Reding treding@nvidia.com --- tegra/job.c | 23 +++++++++ tegra/meson.build | 2 +- tegra/private.h | 5 ++ tegra/pushbuf.c | 48 +++++++++++++++++++ tegra/syncpt.c | 101 ++++++++++++++++++++++++++++++++++++++++ tegra/tegra-symbols.txt | 7 +++ tegra/tegra.h | 16 +++++++ 7 files changed, 201 insertions(+), 1 deletion(-) create mode 100644 tegra/syncpt.c
diff --git a/tegra/job.c b/tegra/job.c index c8c94e131ef0..75a344f1dcc5 100644 --- a/tegra/job.c +++ b/tegra/job.c @@ -162,3 +162,26 @@ drm_tegra_job_submit(struct drm_tegra_job *job, struct drm_tegra_fence *fence)
return 0; } + +drm_public int +drm_tegra_job_wait(struct drm_tegra_job *job, unsigned long timeout) +{ + struct drm_tegra_channel *channel = job->channel; + struct drm_tegra *drm = channel->drm; + struct drm_tegra_syncpoint_wait args; + struct timespec ts; + int err; + + clock_gettime(CLOCK_MONOTONIC, &ts); + + memset(&args, 0, sizeof(args)); + args.timeout_ns = ts.tv_sec * 1000000000 + ts.tv_nsec + timeout; + args.id = job->syncpt.id; + args.threshold = job->syncpt.fence; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args); + if (err < 0) + return -errno; + + return 0; +} diff --git a/tegra/meson.build b/tegra/meson.build index 38e43039837c..3059b2a57d56 100644 --- a/tegra/meson.build +++ b/tegra/meson.build @@ -22,7 +22,7 @@ libdrm_tegra = library( 'drm_tegra', [ files( - 'channel.c', 'job.c', 'private.h', 'pushbuf.c', 'tegra.c' + 'channel.c', 'job.c', 'private.h', 'pushbuf.c', 'syncpt.c', 'tegra.c' ), config_file ], diff --git a/tegra/private.h b/tegra/private.h index 970ee8ad66d4..f134f3ea2cea 100644 --- a/tegra/private.h +++ b/tegra/private.h @@ -104,4 +104,9 @@ struct drm_tegra_submit_cmd * drm_tegra_job_add_command(struct drm_tegra_job *job, uint32_t type, uint32_t flags);
+struct drm_tegra_syncpoint { + struct drm_tegra *drm; + uint32_t id; +}; + #endif /* __DRM_TEGRA_PRIVATE_H__ */ diff --git a/tegra/pushbuf.c b/tegra/pushbuf.c index 380a50abbbb0..0c0212e127a7 100644 --- a/tegra/pushbuf.c +++ b/tegra/pushbuf.c @@ -101,6 +101,25 @@ drm_tegra_pushbuf_end(struct drm_tegra_pushbuf *pushbuf, uint32_t *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, @@ -134,3 +153,32 @@ drm_tegra_pushbuf_relocate(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp,
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); +} diff --git a/tegra/syncpt.c b/tegra/syncpt.c new file mode 100644 index 000000000000..16014186fa30 --- /dev/null +++ b/tegra/syncpt.c @@ -0,0 +1,101 @@ +/* + * Copyright © 2021 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 <string.h> + +#include <sys/ioctl.h> + +#include "private.h" + +drm_public int +drm_tegra_syncpoint_new(struct drm_tegra *drm, + struct drm_tegra_syncpoint **syncptp) +{ + struct drm_tegra_syncpoint_allocate args; + struct drm_tegra_syncpoint *syncpt; + int err; + + syncpt = calloc(1, sizeof(*syncpt)); + if (!syncpt) + return -ENOMEM; + + memset(&args, 0, sizeof(args)); + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_ALLOCATE, &args); + if (err < 0) { + free(syncpt); + return -errno; + } + + syncpt->drm = drm; + syncpt->id = args.id; + + *syncptp = syncpt; + + return 0; +} + +drm_public int +drm_tegra_syncpoint_free(struct drm_tegra_syncpoint *syncpt) +{ + struct drm_tegra_syncpoint_free args; + struct drm_tegra *drm = syncpt->drm; + int err; + + if (!syncpt) + return -EINVAL; + + memset(&args, 0, sizeof(args)); + args.id = syncpt->id; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_FREE, &args); + if (err < 0) + return -errno; + + free(syncpt); + + return 0; +} + +drm_public int +drm_tegra_fence_wait(struct drm_tegra_fence *fence, unsigned long timeout) +{ + struct drm_tegra_syncpoint_wait args; + struct drm_tegra *drm = fence->drm; + int err; + + memset(&args, 0, sizeof(args)); + args.timeout_ns = 0; + args.id = fence->syncpt; + args.threshold = fence->value; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args); + if (err < 0) + return -errno; + + return 0; +} diff --git a/tegra/tegra-symbols.txt b/tegra/tegra-symbols.txt index da3972cb99e1..1a75c3d27c83 100644 --- a/tegra/tegra-symbols.txt +++ b/tegra/tegra-symbols.txt @@ -15,11 +15,18 @@ drm_tegra_channel_map drm_tegra_channel_open drm_tegra_channel_unmap drm_tegra_close +drm_tegra_fence_wait drm_tegra_job_free drm_tegra_job_get_pushbuf drm_tegra_job_new drm_tegra_job_submit +drm_tegra_job_wait drm_tegra_new drm_tegra_pushbuf_begin drm_tegra_pushbuf_end drm_tegra_pushbuf_relocate +drm_tegra_pushbuf_sync +drm_tegra_pushbuf_sync_cond +drm_tegra_pushbuf_wait +drm_tegra_syncpoint_free +drm_tegra_syncpoint_new diff --git a/tegra/tegra.h b/tegra/tegra.h index 0213e3b11e04..8f3c0554f29b 100644 --- a/tegra/tegra.h +++ b/tegra/tegra.h @@ -65,6 +65,7 @@ struct drm_tegra_channel; struct drm_tegra_mapping; struct drm_tegra_pushbuf; struct drm_tegra_job; +struct drm_tegra_syncpoint;
enum drm_tegra_sync_cond { DRM_TEGRA_SYNC_COND_IMMEDIATE, @@ -102,10 +103,25 @@ 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_wait(struct drm_tegra_pushbuf *pushbuf, + struct drm_tegra_syncpoint *syncpt, + uint32_t value); 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); +int drm_tegra_pushbuf_sync(struct drm_tegra_pushbuf *pushbuf, + struct drm_tegra_syncpoint *syncpt, + unsigned int count); +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); + +int drm_tegra_syncpoint_new(struct drm_tegra *drm, + struct drm_tegra_syncpoint **syncptp); +int drm_tegra_syncpoint_free(struct drm_tegra_syncpoint *syncpt); +int drm_tegra_fence_wait(struct drm_tegra_fence *fence, unsigned long timeout);
#endif /* __DRM_TEGRA_H__ */