drm/amd/display: refactor riommu invalidation wa

[Why]
A cleaner solution, only done once on boot.

[How]
Remove previous workaround and configure an extra
vmid one time on boot
Reviewed-by: Kazlauskas Nicholas <Nicholas.Kazlauskas@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c

@@ -610,20 +610,3 @@ bool dcn31_is_abm_supported(struct dc *dc,
 	}
 	return false;
 }
-
-static void apply_riommu_invalidation_wa(struct dc *dc)
-{
-	struct dce_hwseq *hws = dc->hwseq;
-
-	if (!hws->wa.early_riommu_invalidation)
-		return;
-
-	REG_UPDATE(DCHUBBUB_ARB_HOSTVM_CNTL, DISABLE_HOSTVM_FORCE_ALLOW_PSTATE, 0);
-}
-
-void dcn31_init_pipes(struct dc *dc, struct dc_state *context)
-{
-	dcn10_init_pipes(dc, context);
-	apply_riommu_invalidation_wa(dc);
-
-}

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c

@@ -104,7 +104,7 @@ static const struct hw_sequencer_funcs dcn31_funcs = {
 };
 
 static const struct hwseq_private_funcs dcn31_private_funcs = {
-	.init_pipes = dcn31_init_pipes,
+	.init_pipes = dcn10_init_pipes,
 	.update_plane_addr = dcn20_update_plane_addr,
 	.plane_atomic_disconnect = dcn10_plane_atomic_disconnect,
 	.update_mpcc = dcn20_update_mpcc,

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c

@@ -1302,7 +1302,6 @@ static struct dce_hwseq *dcn31_hwseq_create(
 		hws->regs = &hwseq_reg;
 		hws->shifts = &hwseq_shift;
 		hws->masks = &hwseq_mask;
-		hws->wa.early_riommu_invalidation = true;
 	}
 	return hws;
 }

drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h

@@ -41,7 +41,6 @@ struct dce_hwseq_wa {
 	bool DEGVIDCN10_254;
 	bool DEGVIDCN21;
 	bool disallow_self_refresh_during_multi_plane_transition;
-	bool early_riommu_invalidation;
 };
 
 struct hwseq_wa_state {