msm: Kernel module to support bus performance monitoring applications
This kernel module is used to mmap() hardware registers for the
performance monitors, counters, etc. The module can also be used to
allocate physical memory which is used by bus performance hardware to
dump performance data.
Change-Id: I5309b84405f40812205f75e0accc9f3fb0c4839c
Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org>
Signed-off-by: Harini Jayaraman <harinij@codeaurora.org>
diff --git a/arch/arm/mach-msm/msm-buspm-dev.h b/arch/arm/mach-msm/msm-buspm-dev.h
new file mode 100644
index 0000000..5839087
--- /dev/null
+++ b/arch/arm/mach-msm/msm-buspm-dev.h
@@ -0,0 +1,50 @@
+/* Copyright (c) 2011, 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 __MSM_BUSPM_DEV_H__
+#define __MSM_BUSPM_DEV_H__
+
+#include <linux/ioctl.h>
+
+struct msm_buspm_map_dev {
+ void *vaddr;
+ unsigned long paddr;
+ size_t buflen;
+};
+
+/* Read/write data into kernel buffer */
+struct buspm_xfer_req {
+ int size; /* Size of this request, in bytes */
+ void *data; /* Data buffer to transfer data to/from */
+};
+
+struct buspm_alloc_params {
+ int size;
+};
+
+#define MSM_BUSPM_IOC_MAGIC 'p'
+
+#define MSM_BUSPM_IOC_FREE \
+ _IOW(MSM_BUSPM_IOC_MAGIC, 0, void *)
+
+#define MSM_BUSPM_IOC_ALLOC \
+ _IOW(MSM_BUSPM_IOC_MAGIC, 1, size_t)
+
+#define MSM_BUSPM_IOC_RDBUF \
+ _IOW(MSM_BUSPM_IOC_MAGIC, 2, struct buspm_xfer_req)
+
+#define MSM_BUSPM_IOC_WRBUF \
+ _IOW(MSM_BUSPM_IOC_MAGIC, 3, struct buspm_xfer_req)
+
+#define MSM_BUSPM_IOC_RD_PHYS_ADDR \
+ _IOR(MSM_BUSPM_IOC_MAGIC, 4, unsigned long)
+#endif