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drm/i915/guc: Make event handler a virtual function

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On platforms with CTB based GuC communications, we will handle
GuC events in a different way. Let's make event handler a virtual
function to allow easy switch between those variants.

Credits-to: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180326194829.58836-6-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2018-03-26 19:48:22 +00:00
committed by Chris Wilson
parent f6a70b5970
commit 769bfbf943
3 changed files with 19 additions and 1 deletions
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8
drivers/gpu/drm/i915/intel_guc.c
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@@ -69,6 +69,7 @@ void intel_guc_init_early(struct intel_guc *guc)
mutex_init(&guc->send_mutex);
spin_lock_init(&guc->irq_lock);
guc->send = intel_guc_send_nop;
guc->handler = intel_guc_to_host_event_handler_nop;
guc->notify = gen8_guc_raise_irq;
}
@@ -317,6 +318,11 @@ int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len,
return -ENODEV;
}
void intel_guc_to_host_event_handler_nop(struct intel_guc *guc)
{
WARN(1, "Unexpected event: no suitable handler\n");
}
/*
* This function implements the MMIO based host to GuC interface.
*/
@@ -388,7 +394,7 @@ out:
return ret;
}
void intel_guc_to_host_event_handler(struct intel_guc *guc)
void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
u32 msg, val;