drm/i915: Add GuC-related module parameters

Two new module parameters: "enable_guc_submission" which will turn
on submission of batchbuffers via the GuC (when implemented), and
"guc_log_level" which controls the level of debugging logged by the
GuC and captured by the host.

Signed-off-by: Alex Dai <yu.dai@intel.com>
v4:
    Mark "enable_guc_submission" unsafe [Daniel Vetter]

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 77c23796f119986b5b392786f17a3b19b6f315ab..b876e788e2f8603513bd2925f7c7e1183a38d69f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2610,6 +2610,8 @@ struct i915_params {
        bool reset;
        bool disable_display;
        bool disable_vtd_wa;
+       bool enable_guc_submission;
+       int guc_log_level;
        int use_mmio_flip;
        int mmio_debug;
        bool verbose_state_checks;

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 5f4e7295295ff4904a7207f839abd912f77f0340..5ae4b0aba56412e3c7d8560c5fe1d1484ae00675 100644 (file)
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -52,6 +52,8 @@ struct i915_params i915 __read_mostly = {
        .mmio_debug = 0,
        .verbose_state_checks = 1,
        .edp_vswing = 0,
+       .enable_guc_submission = false,
+       .guc_log_level = -1,
 };
 
 module_param_named(modeset, i915.modeset, int, 0400);
@@ -181,3 +183,10 @@ MODULE_PARM_DESC(edp_vswing,
                 "Ignore/Override vswing pre-emph table selection from VBT "
                 "(0=use value from vbt [default], 1=low power swing(200mV),"
                 "2=default swing(400mV))");
+
+module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, bool, 0400);
+MODULE_PARM_DESC(enable_guc_submission, "Enable GuC submission (default:false)");
+
+module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
+MODULE_PARM_DESC(guc_log_level,
+       "GuC firmware logging level (-1:disabled (default), 0-3:enabled)");