[PATCH 1/2] drm/amdgpu: Add Secure Display TA header file

* [PATCH 1/2] drm/amdgpu: Add Secure Display TA header file
@ 2021-01-13  3:43 Jinzhou Su
  2021-01-13  3:43 ` [PATCH 2/2] drm/amdgpu: Add secure display TA interface Jinzhou Su
                   ` (2 more replies)
  0 siblings, 3 replies; 10+ messages in thread
From: Jinzhou Su @ 2021-01-13  3:43 UTC (permalink / raw)
  To: amd-gfx; +Cc: Jinzhou Su, ray.huang

Add file ta_secureDisplay_if.h for Secure Display TA

Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
 .../gpu/drm/amd/amdgpu/ta_secureDisplay_if.h  | 154 ++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 drivers/gpu/drm/amd/amdgpu/ta_secureDisplay_if.h

diff --git a/drivers/gpu/drm/amd/amdgpu/ta_secureDisplay_if.h b/drivers/gpu/drm/amd/amdgpu/ta_secureDisplay_if.h
new file mode 100644
index 000000000000..5039375bb1d4
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/ta_secureDisplay_if.h
@@ -0,0 +1,154 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef _TA_SECUREDISPLAY_IF_H
+#define _TA_SECUREDISPLAY_IF_H
+
+/** Secure Display related enumerations */
+/**********************************************************/
+
+/** @enum ta_securedisplay_command
+ *    Secure Display Command ID
+ */
+enum ta_securedisplay_command {
+	/* Query whether TA is responding used only for validation purpose */
+	TA_SECUREDISPLAY_COMMAND__QUERY_TA              = 1,
+	/* Send region of Interest and CRC value to I2C */
+	TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC          = 2,
+	/* Maximum Command ID */
+	TA_SECUREDISPLAY_COMMAND__MAX_ID                = 0x7FFFFFFF,
+};
+
+/** @enum ta_securedisplay_status
+ *    Secure Display status returns in shared buffer status
+ */
+enum ta_securedisplay_status {
+	TA_SECUREDISPLAY_STATUS__SUCCESS                 = 0x00,         /* Success */
+	TA_SECUREDISPLAY_STATUS__GENERIC_FAILURE         = 0x01,         /* Generic Failure */
+	TA_SECUREDISPLAY_STATUS__INVALID_PARAMETER       = 0x02,         /* Invalid Parameter */
+	TA_SECUREDISPLAY_STATUS__NULL_POINTER            = 0x03,         /* Null Pointer*/
+	TA_SECUREDISPLAY_STATUS__I2C_WRITE_ERROR         = 0x04,         /* Fail to Write to I2C */
+	TA_SECUREDISPLAY_STATUS__READ_DIO_SCRATCH_ERROR  = 0x05, /*Fail Read DIO Scratch Register*/
+	TA_SECUREDISPLAY_STATUS__READ_CRC_ERROR          = 0x06,         /* Fail to Read CRC*/
+
+	TA_SECUREDISPLAY_STATUS__MAX                     = 0x7FFFFFFF,/* Maximum Value for status*/
+};
+
+/** @enum ta_securedisplay_max_phy
+ *    Physical ID number to use for reading corresponding DIO Scratch register for ROI
+ */
+enum  ta_securedisplay_max_phy {
+	TA_SECUREDISPLAY_PHY0                           = 0,
+	TA_SECUREDISPLAY_PHY1                           = 1,
+	TA_SECUREDISPLAY_PHY2                           = 2,
+	TA_SECUREDISPLAY_PHY3                           = 3,
+	TA_SECUREDISPLAY_MAX_PHY                        = 4,
+};
+
+/** @enum ta_securedisplay_ta_query_cmd_ret
+ *    A predefined specific reteurn value which is 0xAB only used to validate
+ *    communication to Secure Display TA is functional.
+ *    This value is used to validate whether TA is responding successfully
+ */
+enum ta_securedisplay_ta_query_cmd_ret {
+	/* This is a value to validate if TA is loaded successfully */
+	TA_SECUREDISPLAY_QUERY_CMD_RET                 = 0xAB,
+};
+
+/** @enum ta_securedisplay_buffer_size
+ *    I2C Buffer size which contains 8 bytes of ROI  (X start, X end, Y start, Y end)
+ *    and 6 bytes of CRC( R,G,B) and 1  byte for physical ID
+ */
+enum ta_securedisplay_buffer_size {
+	/* 15 bytes = 8 byte (ROI) + 6 byte(CRC) + 1 byte(phy_id) */
+	TA_SECUREDISPLAY_I2C_BUFFER_SIZE                = 15,
+};
+
+/** Input/output structures for Secure Display commands */
+/**********************************************************/
+/**
+ * Input structures
+ */
+
+/** @struct ta_securedisplay_send_roi_crc_input
+ *    Physical ID to determine which DIO scratch register should be used to get ROI
+ */
+struct ta_securedisplay_send_roi_crc_input {
+	uint32_t  phy_id;  /* Physical ID */
+};
+
+/** @union ta_securedisplay_cmd_input
+ *    Input buffer
+ */
+union ta_securedisplay_cmd_input {
+	/* send ROI and CRC input buffer format */
+	struct ta_securedisplay_send_roi_crc_input        send_roi_crc;
+	uint32_t                                          reserved[4];
+};
+
+/**
+ * Output structures
+ */
+
+/** @struct ta_securedisplay_query_ta_output
+ *  Output buffer format for query TA whether TA is responding used only for validation purpose
+ */
+struct ta_securedisplay_query_ta_output {
+	/* return value from TA when it is queried for validation purpose only */
+	uint32_t  query_cmd_ret;
+};
+
+/** @struct ta_securedisplay_send_roi_crc_output
+ *  Output buffer format for send ROI CRC command which will pass I2c buffer created inside TA
+ *  and used to write to I2C used only for validation purpose
+ */
+struct ta_securedisplay_send_roi_crc_output {
+	uint8_t  i2c_buf[TA_SECUREDISPLAY_I2C_BUFFER_SIZE];  /* I2C buffer */
+	uint8_t  reserved;
+};
+
+/** @union ta_securedisplay_cmd_output
+ *    Output buffer
+ */
+union ta_securedisplay_cmd_output {
+	/* Query TA output buffer format used only for validation purpose*/
+	struct ta_securedisplay_query_ta_output            query_ta;
+	/* Send ROI CRC output buffer format used only for validation purpose */
+	struct ta_securedisplay_send_roi_crc_output        send_roi_crc;
+	uint32_t                                           reserved[4];
+};
+
+/** @struct securedisplay_cmd
+ *    Secure Display Command which is shared buffer memory
+ */
+struct securedisplay_cmd {
+	uint32_t                             cmd_id;                    /* +0  Bytes Command ID */
+	enum ta_securedisplay_status         status;     /* +4  Bytes Status of Secure Display TA */
+	uint32_t                             reserved[2];               /* +8  Bytes Reserved */
+	union ta_securedisplay_cmd_input     securedisplay_in_message;  /* +16 Bytes Input Buffer */
+	union ta_securedisplay_cmd_output    securedisplay_out_message;/* +32 Bytes Output Buffer */
+	/**@note Total 48 Bytes */
+};
+
+#endif   //_TA_SECUREDISPLAY_IF_H
+
-- 
2.17.1

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