Reviewed-by: Mikko Perttnuen <mperttunen@xxxxxxxxxx>
On 07/08/2018 22.07, Dmitry Osipenko wrote:
Currently gathers of a hung job are getting NOP'ed and a restarted CDMA
executes the NOP'ed gathers. There shouldn't be a reason to not restart
CDMA execution starting with a next job, avoiding the unnecessary churning
with gathers NOP'ing.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/gpu/host1x/cdma.c | 23 +++++++++++------------
drivers/gpu/host1x/hw/cdma_hw.c | 13 -------------
2 files changed, 11 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index 6aa6fa1498e8..9e4f01c7f663 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -323,7 +323,7 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
{
struct host1x *host1x = cdma_to_host1x(cdma);
u32 restart_addr, syncpt_incrs, syncpt_val;
- struct host1x_job *job;
+ struct host1x_job *job, *next_job = NULL;
syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt);
@@ -341,8 +341,13 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
__func__);
list_for_each_entry(job, &cdma->sync_queue, list) {
- if (syncpt_val < job->syncpt_end)
+ if (syncpt_val < job->syncpt_end) {
+
+ if (!list_is_last(&job->list, &cdma->sync_queue))
+ next_job = list_next_entry(job, list);
+
goto syncpt_incr;
+ }
host1x_job_dump(dev, job);
}
@@ -355,17 +360,11 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
/*
* Increment with CPU the remaining syncpts of a partially executed job.
*
- * Syncpt increments must be done inline with the pushbuffer from a
- * GATHER buffer to maintain the order (slots are modified to be a
- * GATHER of syncpt incrs).
- *
- * Note: save in restart_addr the location where the timed out buffer
- * started in the PB, so we can start the refetch from there (with the
- * modified NOP-ed PB slots). This lets things appear to have completed
- * properly for this buffer and resources are freed.
+ * CDMA will continue execution starting with the next job or will get
+ * into idle state.
*/
- if (job)
- restart_addr = job->first_get;
+ if (next_job)
+ restart_addr = next_job->first_get;
else
restart_addr = cdma->last_pos;
diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c
index ce320534cbed..bc203532ae6d 100644
--- a/drivers/gpu/host1x/hw/cdma_hw.c
+++ b/drivers/gpu/host1x/hw/cdma_hw.c
@@ -40,7 +40,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr,
u32 syncpt_incrs, u32 syncval, u32 nr_slots)
{
struct host1x *host1x = cdma_to_host1x(cdma);
- struct push_buffer *pb = &cdma->push_buffer;
unsigned int i;
for (i = 0; i < syncpt_incrs; i++)
@@ -48,18 +47,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr,
/* after CPU incr, ensure shadow is up to date */
host1x_syncpt_load(cdma->timeout.syncpt);
-
- /* NOP all the PB slots */
- while (nr_slots--) {
- u32 *p = (u32 *)(pb->mapped + getptr);
- *(p++) = HOST1X_OPCODE_NOP;
- *(p++) = HOST1X_OPCODE_NOP;
- dev_dbg(host1x->dev, "%s: NOP at %pad+%#x\n", __func__,
- &pb->dma, getptr);
- getptr = (getptr + 8) & (pb->size - 1);
- }
-
- wmb();
}
/*
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