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drm/i915/guc: Handle default action received over CT

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When running on platform with CTB based GuC communication enabled,
GuC to Host event data will be delivered as CT request message.
However, content of the data[1] of this CT message follows format
of the scratch register used in MMIO based communication, so some
code reuse is still possible.

v2:  filter disabled messages (Daniele)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com> #1
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Acked-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180327214124.70680-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2018-03-27 21:41:24 +00:00
committed by Chris Wilson
parent 6c77a2b058
commit b6b0166d49
3 changed files with 18 additions and 0 deletions
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8
drivers/gpu/drm/i915/intel_guc.c
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@@ -416,6 +416,14 @@ void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc)
I915_WRITE(SOFT_SCRATCH(15), val & ~msg);
spin_unlock(&guc->irq_lock);
intel_guc_to_host_process_recv_msg(guc, msg);
}
void intel_guc_to_host_process_recv_msg(struct intel_guc *guc, u32 msg)
{
/* Make sure to handle only enabled messages */
msg &= guc->msg_enabled_mask;
if (msg & (INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER |
INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED))
intel_guc_log_handle_flush_event(&guc->log);