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| author | Arto Merilainen <amerilainen@nvidia.com> | 2013-10-14 15:21:53 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2013-10-31 09:55:48 +0100 |
| commit | f5a954fed9b3eb04973ede72c50c66157fa9e15b (patch) | |
| tree | d9d6faeb5b2bafbc5a4143feb10e27d975ec1da4 /drivers/gpu/host1x/hw/channel_hw.c | |
| parent | 8736fe81532182ba0086a371fae0708ea42a2cdf (diff) | |
| download | blackbird-op-linux-f5a954fed9b3eb04973ede72c50c66157fa9e15b.tar.gz blackbird-op-linux-f5a954fed9b3eb04973ede72c50c66157fa9e15b.zip | |
gpu: host1x: Add syncpoint base support
This patch adds support for hardware syncpoint bases. This creates
a simple mechanism to stall the command FIFO until an operation is
completed.
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x/hw/channel_hw.c')
| -rw-r--r-- | drivers/gpu/host1x/hw/channel_hw.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index 3be0cd296d3a..4608257ab656 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -67,6 +67,22 @@ static void submit_gathers(struct host1x_job *job) } } +static inline void synchronize_syncpt_base(struct host1x_job *job) +{ + struct host1x *host = dev_get_drvdata(job->channel->dev->parent); + struct host1x_syncpt *sp = host->syncpt + job->syncpt_id; + u32 id, value; + + value = host1x_syncpt_read_max(sp); + id = sp->base->id; + + host1x_cdma_push(&job->channel->cdma, + host1x_opcode_setclass(HOST1X_CLASS_HOST1X, + HOST1X_UCLASS_LOAD_SYNCPT_BASE, 1), + HOST1X_UCLASS_LOAD_SYNCPT_BASE_BASE_INDX_F(id) | + HOST1X_UCLASS_LOAD_SYNCPT_BASE_VALUE_F(value)); +} + static int channel_submit(struct host1x_job *job) { struct host1x_channel *ch = job->channel; @@ -118,6 +134,10 @@ static int channel_submit(struct host1x_job *job) host1x_syncpt_read_max(sp))); } + /* Synchronize base register to allow using it for relative waiting */ + if (sp->base) + synchronize_syncpt_base(job); + syncval = host1x_syncpt_incr_max(sp, user_syncpt_incrs); job->syncpt_end = syncval; |
