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From the kernel side there isn't much to be done, just a few > things: > > 1) Toggle the feature support in GuC > 2) Enable some additional WAs > 3) Allocate buffers > > Here is the first step, with the next ones to follow. > > Cc: Matt Roper > Cc: Daniele Ceraolo Spurio > Cc: John Harrison > Original-author: Brian Welty > Signed-off-by: Lucas De Marchi Reviewed-by: Matt Atwood > --- > drivers/gpu/drm/xe/xe_guc.c | 3 +++ > drivers/gpu/drm/xe/xe_guc_fwif.h | 1 + > drivers/gpu/drm/xe/xe_module.c | 3 +++ > drivers/gpu/drm/xe/xe_module.h | 1 + > 4 files changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c > index b1d1d6da37581..a117300501247 100644 > --- a/drivers/gpu/drm/xe/xe_guc.c > +++ b/drivers/gpu/drm/xe/xe_guc.c > @@ -86,6 +86,9 @@ static u32 guc_ctl_feature_flags(struct xe_guc *guc) > if (!guc_to_xe(guc)->info.skip_guc_pc) > flags |= GUC_CTL_ENABLE_SLPC; > > + if (xe_modparam.enable_psmi) > + flags |= GUC_CTL_ENABLE_PSMI; > + > return flags; > } > > diff --git a/drivers/gpu/drm/xe/xe_guc_fwif.h b/drivers/gpu/drm/xe/xe_guc_fwif.h > index 6f57578b07cb0..2a5256c24b9d8 100644 > --- a/drivers/gpu/drm/xe/xe_guc_fwif.h > +++ b/drivers/gpu/drm/xe/xe_guc_fwif.h > @@ -107,6 +107,7 @@ struct guc_update_exec_queue_policy { > #define GUC_CTL_FEATURE 2 > #define GUC_CTL_ENABLE_SLPC BIT(2) > #define GUC_CTL_ENABLE_LITE_RESTORE BIT(4) > +#define GUC_CTL_ENABLE_PSMI BIT(7) > #define GUC_CTL_DISABLE_SCHEDULER BIT(14) > > #define GUC_CTL_DEBUG 3 > diff --git a/drivers/gpu/drm/xe/xe_module.c b/drivers/gpu/drm/xe/xe_module.c > index 064093bf1adca..2e6ac082f7bee 100644 > --- a/drivers/gpu/drm/xe/xe_module.c > +++ b/drivers/gpu/drm/xe/xe_module.c > @@ -57,6 +57,9 @@ module_param_named(probe_display, xe_modparam.probe_display, bool, 0444); > MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched " > "[default=" __stringify(DEFAULT_PROBE_DISPLAY) "])"); > > +module_param_named(enable_psmi, xe_modparam.enable_psmi, bool, 0444); > +MODULE_PARM_DESC(enable_psmi, "Enable PSMI capture support"); > + > module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600); > MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size " > "[default=" __stringify(DEFAULT_VRAM_BAR_SIZE) "])"); > diff --git a/drivers/gpu/drm/xe/xe_module.h b/drivers/gpu/drm/xe/xe_module.h > index 5a3bfea8b7b4c..a84af8eccb91d 100644 > --- a/drivers/gpu/drm/xe/xe_module.h > +++ b/drivers/gpu/drm/xe/xe_module.h > @@ -12,6 +12,7 @@ > struct xe_modparam { > bool force_execlist; > bool probe_display; > + bool enable_psmi; > u32 force_vram_bar_size; > int guc_log_level; > char *guc_firmware_path; > > -- > 2.49.0 >