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| author |   Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2017-09-22 15:43:07 +0300 |
|---|---|---|
| committer |   Mika Kuoppala <mika.kuoppala@intel.com> | 2017-09-25 11:33:53 +0300 |
| commit | 76e70087d360fdbe97f24c205d585ada04126e5f (patch) | |
| tree | 2ad0fd9d5614b6d79367055577528318ececda1d /drivers/gpu/drm/i915/intel_engine_cs.c | |
| parent | drm/i915: Add execlist_port_complete (diff) | |
| download | linux-dev-76e70087d360fdbe97f24c205d585ada04126e5f.tar.xz linux-dev-76e70087d360fdbe97f24c205d585ada04126e5f.zip | |
drm/i915: Make execlist port count variable
As we emulate execlists on top of the GuC workqueue, it is not
restricted to just 2 ports and we can increase that number arbitrarily
to trade-off queue depth (i.e. scheduling latency) against pipeline
bubbles.
v2: rebase. better commit msg (Chris)
v3: rebase
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170922124307.10914-5-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 30035e59a784..a28e2a864cf1 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -405,6 +405,10 @@ static void intel_engine_init_execlist(struct intel_engine_cs *engine) execlists->csb_use_mmio = csb_force_mmio(engine->i915); + execlists->port_mask = 1; + BUILD_BUG_ON_NOT_POWER_OF_2(execlists_num_ports(execlists)); + GEM_BUG_ON(execlists_num_ports(execlists) > EXECLIST_MAX_PORTS); + execlists->queue = RB_ROOT; execlists->first = NULL; } |