drm/amd/display: move vmid determination logic to a module

Currently vmid is decided internally inside dc. With the introduction
of new asics we are required to coordinate vmid use with external
components.

This change converts vmid logic to a DAL module allowing vmid to be
passed in as a parameter to DC.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_vmid.h b/drivers/gpu/drm/amd/display/modules/inc/mod_vmid.h
new file mode 100644
index 000000000000..c7672f3b837f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_vmid.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef MOD_VMID_H_
+#define MOD_VMID_H_
+
+#define MAX_VMID 16
+
+#include "dc.h"
+
+struct mod_vmid {
+	int dummy;
+};
+
+uint8_t mod_vmid_get_for_ptb(struct mod_vmid *mod_vmid, uint64_t ptb);
+void mod_vmid_reset(struct mod_vmid *mod_vmid);
+struct mod_vmid *mod_vmid_create(
+		struct dc *dc,
+		unsigned int num_vmid,
+		struct dc_virtual_addr_space_config *va_config);
+
+#endif /* MOD_VMID_H_ */