msm: qdss: add STM driver
System Trace Macrocell (STM) driver provides apis and user interfaces
that can be used for software instrumentation based tracing that takes
advantage of the STM hardware.
Change-Id: I63c56bf8c6a86ec0ad49950d631be8db6074d7a8
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/stm.h b/arch/arm/mach-msm/include/mach/stm.h
new file mode 100644
index 0000000..20c4963
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/stm.h
@@ -0,0 +1,60 @@
+/* Copyright (c) 2012, Code Aurora Forum. 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 __MACH_STM_H
+#define __MACH_STM_H
+
+enum {
+ OST_ENTITY_NONE = 0x0,
+ OST_ENTITY_FTRACE_EVENTS = 0x1,
+ OST_ENTITY_TRACE_PRINTK = 0x2,
+ OST_ENTITY_TRACE_MARKER = 0x4,
+ OST_ENTITY_DEV_NODE = 0x8,
+ OST_ENTITY_ALL = 0xF,
+};
+
+enum {
+ STM_OPTION_NONE = 0x0,
+ STM_OPTION_TIMESTAMPED = 0x08,
+ STM_OPTION_GUARANTEED = 0x80,
+};
+
+#define stm_log_inv(entity_id, proto_id, data, size) \
+ stm_trace(STM_OPTION_NONE, entity_id, proto_id, data, size)
+
+#define stm_log_inv_ts(entity_id, proto_id, data, size) \
+ stm_trace(STM_OPTION_TIMESTAMPED, entity_id, proto_id, \
+ data, size)
+
+#define stm_log_gtd(entity_id, proto_id, data, size) \
+ stm_trace(STM_OPTION_GUARANTEED, entity_id, proto_id, \
+ data, size)
+
+#define stm_log_gtd_ts(entity_id, proto_id, data, size) \
+ stm_trace(STM_OPTION_GUARANTEED | STM_OPTION_TIMESTAMPED, \
+ entity_id, proto_id, data, size)
+
+#define stm_log(entity_id, data, size) \
+ stm_log_inv_ts(entity_id, 0, data, size)
+
+#ifdef CONFIG_MSM_QDSS
+extern int stm_trace(uint32_t options, uint8_t entity_id, uint8_t proto_id,
+ const void *data, uint32_t size);
+#else
+static inline int stm_trace(uint32_t options, uint8_t entity_id,
+ uint8_t proto_id, const void *data, uint32_t size)
+{
+ return 0;
+}
+#endif
+
+#endif