profiler: Add a communication interface between userspace and tz services

Add a new driver to Provide a communication interface between userspace and
tz services using Secure Channel Manager (SCM) interface. It exposes APIs
for userspace to get system profiling information.
This will allow the sdp profiler to get cpu/gpu and total bandwidth info.

Change-Id: Ia1f5dbdda44b9e25a0a705ffe827f0c3741c8ef8
Signed-off-by: Jaiju Yesudasan <cjaijuy@codeaurora.org>

1 files changed, 101 insertions, 0 deletions

diff --git a/include/soc/qcom/profiler.h b/include/soc/qcom/profiler.h
new file mode 100644
index 000000000000..c53b510fc149
--- /dev/null
+++ b/include/soc/qcom/profiler.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PROFILER_H_
+#define __PROFILER_H_
+
+
+struct profiler_bw_cntrs_req {
+	uint32_t total;
+	uint32_t gpu;
+	uint32_t cpu;
+	uint32_t cmd;
+};
+
+struct compat_profiler_bw_cntrs_req {
+	compat_uint_t total;
+	compat_uint_t gpu;
+	compat_uint_t cpu;
+	compat_uint_t cmd;
+};
+
+/* Error types */
+enum tz_bw_svc_err {
+	E_BW_SUCCESS = 0,       /* Operation successful    */
+	E_BW_FAILURE = 1,       /* Operation failed due to unknown err   */
+	E_BW_NULL_PARAM = 2,    /* Null Parameter          */
+	E_BW_INVALID_ARG = 3,   /* Arg is not recognized   */
+	E_BW_BAD_ADDRESS = 4,   /* Ptr arg is bad address  */
+	E_BW_INVALID_ARG_LEN = 5,       /* Arg length is wrong   */
+	E_BW_NOT_SUPPORTED = 6, /* Operation not supported */
+	E_BW_NOT_PERMITTED = 7, /* Operation not permitted on platform   */
+	E_BW_TIME_LOCKED = 8,   /* Operation not permitted right now     */
+	E_BW_RESERVED = 0x7FFFFFFF
+};
+
+#define TZ_BW_SVC_VERSION (1)
+#define PROFILER_IOC_MAGIC    0x98
+
+#define PROFILER_IOCTL_GET_BW_INFO \
+	_IOWR(PROFILER_IOC_MAGIC, 1, struct profiler_bw_cntrs_req)
+
+#define COMPAT_PROFILER_IOCTL_GET_BW_INFO \
+	_IOWR(PROFILER_IOC_MAGIC, 1, struct compat_profiler_bw_cntrs_req)
+
+/* Command types */
+enum tz_bw_svc_cmd {
+	TZ_BW_SVC_START_ID = 0x00000001,
+	TZ_BW_SVC_GET_ID = 0x00000002,
+	TZ_BW_SVC_STOP_ID = 0x00000003,
+	TZ_BW_SVC_LAST_ID = 0x7FFFFFFF
+};
+/* Start Request */
+struct tz_bw_svc_start_req {
+	enum tz_bw_svc_cmd cmd_id;
+	uint32_t version;
+} __packed;
+
+/* Get Request */
+struct tz_bw_svc_get_req {
+	enum tz_bw_svc_cmd cmd_id;
+	uint64_t buf_ptr;
+	uint32_t buf_size;
+} __packed;
+
+/*  Stop Request */
+struct tz_bw_svc_stop_req {
+	enum tz_bw_svc_cmd cmd_id;
+} __packed;
+
+struct tz_bw_svc_resp {
+	enum tz_bw_svc_cmd cmd_id;
+	enum tz_bw_svc_err status;
+} __packed;
+
+__packed union tz_bw_svc_req {
+	struct tz_bw_svc_start_req *start_req;
+	struct tz_bw_svc_get_req *get_req;
+	struct tz_bw_svc_stop_req *stop_req;
+};
+
+struct tz_bw_svc_buf {
+	union tz_bw_svc_req bwreq;
+	struct tz_bw_svc_resp bwresp;
+	uint32_t req_size;
+} __packed;
+
+
+#define TZ_SVC_INFO                      6    /* Misc. information services */
+#define TZ_SVC_BW_PROF_ID                0x07
+
+#endif /* __PROFILER_H_ */