Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/crypto/ccp/tee-dev.h b/drivers/crypto/ccp/tee-dev.h
new file mode 100644
index 0000000..49d2615
--- /dev/null
+++ b/drivers/crypto/ccp/tee-dev.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright (C) 2019,2021 Advanced Micro Devices, Inc.
+ *
+ * Author: Rijo Thomas <Rijo-john.Thomas@amd.com>
+ * Author: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
+ *
+ */
+
+/* This file describes the TEE communication interface between host and AMD
+ * Secure Processor
+ */
+
+#ifndef __TEE_DEV_H__
+#define __TEE_DEV_H__
+
+#include <linux/device.h>
+#include <linux/mutex.h>
+
+#define TEE_DEFAULT_TIMEOUT 10
+#define MAX_BUFFER_SIZE 988
+
+/**
+ * enum tee_ring_cmd_id - TEE interface commands for ring buffer configuration
+ * @TEE_RING_INIT_CMD: Initialize ring buffer
+ * @TEE_RING_DESTROY_CMD: Destroy ring buffer
+ * @TEE_RING_MAX_CMD: Maximum command id
+ */
+enum tee_ring_cmd_id {
+ TEE_RING_INIT_CMD = 0x00010000,
+ TEE_RING_DESTROY_CMD = 0x00020000,
+ TEE_RING_MAX_CMD = 0x000F0000,
+};
+
+/**
+ * struct tee_init_ring_cmd - Command to init TEE ring buffer
+ * @low_addr: bits [31:0] of the physical address of ring buffer
+ * @hi_addr: bits [63:32] of the physical address of ring buffer
+ * @size: size of ring buffer in bytes
+ */
+struct tee_init_ring_cmd {
+ u32 low_addr;
+ u32 hi_addr;
+ u32 size;
+};
+
+#define MAX_RING_BUFFER_ENTRIES 32
+
+/**
+ * struct ring_buf_manager - Helper structure to manage ring buffer.
+ * @ring_start: starting address of ring buffer
+ * @ring_size: size of ring buffer in bytes
+ * @ring_pa: physical address of ring buffer
+ * @wptr: index to the last written entry in ring buffer
+ */
+struct ring_buf_manager {
+ struct mutex mutex; /* synchronizes access to ring buffer */
+ void *ring_start;
+ u32 ring_size;
+ phys_addr_t ring_pa;
+ u32 wptr;
+};
+
+struct psp_tee_device {
+ struct device *dev;
+ struct psp_device *psp;
+ void __iomem *io_regs;
+ struct tee_vdata *vdata;
+ struct ring_buf_manager rb_mgr;
+};
+
+/**
+ * enum tee_cmd_state - TEE command states for the ring buffer interface
+ * @TEE_CMD_STATE_INIT: initial state of command when sent from host
+ * @TEE_CMD_STATE_PROCESS: command being processed by TEE environment
+ * @TEE_CMD_STATE_COMPLETED: command processing completed
+ */
+enum tee_cmd_state {
+ TEE_CMD_STATE_INIT,
+ TEE_CMD_STATE_PROCESS,
+ TEE_CMD_STATE_COMPLETED,
+};
+
+/**
+ * enum cmd_resp_state - TEE command's response status maintained by driver
+ * @CMD_RESPONSE_INVALID: initial state when no command is written to ring
+ * @CMD_WAITING_FOR_RESPONSE: driver waiting for response from TEE
+ * @CMD_RESPONSE_TIMEDOUT: failed to get response from TEE
+ * @CMD_RESPONSE_COPIED: driver has copied response from TEE
+ */
+enum cmd_resp_state {
+ CMD_RESPONSE_INVALID,
+ CMD_WAITING_FOR_RESPONSE,
+ CMD_RESPONSE_TIMEDOUT,
+ CMD_RESPONSE_COPIED,
+};
+
+/**
+ * struct tee_ring_cmd - Structure of the command buffer in TEE ring
+ * @cmd_id: refers to &enum tee_cmd_id. Command id for the ring buffer
+ * interface
+ * @cmd_state: refers to &enum tee_cmd_state
+ * @status: status of TEE command execution
+ * @res0: reserved region
+ * @pdata: private data (currently unused)
+ * @res1: reserved region
+ * @buf: TEE command specific buffer
+ * @flag: refers to &enum cmd_resp_state
+ */
+struct tee_ring_cmd {
+ u32 cmd_id;
+ u32 cmd_state;
+ u32 status;
+ u32 res0[1];
+ u64 pdata;
+ u32 res1[2];
+ u8 buf[MAX_BUFFER_SIZE];
+ u32 flag;
+
+ /* Total size: 1024 bytes */
+} __packed;
+
+int tee_dev_init(struct psp_device *psp);
+void tee_dev_destroy(struct psp_device *psp);
+
+#endif /* __TEE_DEV_H__ */