GuC may send notification messages with payload larger than
single u32. Prepare driver to accept those messages.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Michel Thierry <michel.thierry@xxxxxxxxx>
Cc: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
Cc: Michal Winiarski <michal.winiarski@xxxxxxxxx>
Cc: Tomasz Lis <tomasz.lis@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_guc.c | 13 ++++++++++---
drivers/gpu/drm/i915/intel_guc.h | 3 ++-
drivers/gpu/drm/i915/intel_guc_ct.c | 5 ++++-
3 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index 64f1dca..da61115 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -511,17 +511,24 @@ void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc)
spin_unlock(&guc->irq_lock);
enable_rpm_wakeref_asserts(dev_priv);
- intel_guc_to_host_process_recv_msg(guc, msg);
+ intel_guc_to_host_process_recv_msg(guc, &msg, 1);
}
-void intel_guc_to_host_process_recv_msg(struct intel_guc *guc, u32 msg)
+int intel_guc_to_host_process_recv_msg(struct intel_guc *guc,
+ const u32 *payload, u32 len)
{
+ u32 msg;
+
+ GEM_BUG_ON(!len);
+
/* Make sure to handle only enabled messages */
- msg &= guc->msg_enabled_mask;
+ msg = payload[0] & 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);
+
+ return 0;
}
int intel_guc_sample_forcewake(struct intel_guc *guc)
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 8688edc..1345fe0 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -165,7 +165,8 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
void intel_guc_to_host_event_handler(struct intel_guc *guc);
void intel_guc_to_host_event_handler_nop(struct intel_guc *guc);
void intel_guc_to_host_event_handler_mmio(struct intel_guc *guc);
-void intel_guc_to_host_process_recv_msg(struct intel_guc *guc, u32 msg);
+int intel_guc_to_host_process_recv_msg(struct intel_guc *guc,
+ const u32 *payload, u32 len);
int intel_guc_sample_forcewake(struct intel_guc *guc);
int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset);
int intel_guc_suspend(struct intel_guc *guc);
diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c
index a52883e..2077166 100644
--- a/drivers/gpu/drm/i915/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/intel_guc_ct.c
@@ -709,6 +709,7 @@ static void ct_process_request(struct intel_guc_ct *ct,
u32 action, u32 len, const u32 *payload)
{
struct intel_guc *guc = ct_to_guc(ct);
+ int ret;
CT_DEBUG_DRIVER("CT: request %x %*ph\n", action, 4 * len, payload);
@@ -716,7 +717,9 @@ static void ct_process_request(struct intel_guc_ct *ct,
case INTEL_GUC_ACTION_DEFAULT:
if (unlikely(len < 1))
goto fail_unexpected;
- intel_guc_to_host_process_recv_msg(guc, *payload);
+ ret = intel_guc_to_host_process_recv_msg(guc, payload, len);
+ if (ret)
+ goto fail_unexpected;
break;
default:
--
1.9.1
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