1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Register read and write tracepoints
4 *
5 * Copyright (c) 2021, The Linux Foundation. All rights reserved.
6 */
7
8 #include <linux/kallsyms.h>
9 #include <linux/uaccess.h>
10 #include <linux/module.h>
11 #include <linux/ftrace.h>
12 #include <linux/log_mmiorw.h>
13
14 #define CREATE_TRACE_POINTS
15 #include <trace/events/rwmmio.h>
16
17 #ifdef CONFIG_TRACE_MMIO_ACCESS
__log_write_mmio(u64 val,u8 width,volatile void __iomem * addr)18 void __log_write_mmio(u64 val, u8 width, volatile void __iomem *addr)
19 {
20 trace_rwmmio_write(CALLER_ADDR0, val, width, addr);
21 }
22 EXPORT_SYMBOL_GPL(__log_write_mmio);
23 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_write);
24
__log_read_mmio(u8 width,const volatile void __iomem * addr)25 void __log_read_mmio(u8 width, const volatile void __iomem *addr)
26 {
27 trace_rwmmio_read(CALLER_ADDR0, width, addr);
28 }
29 EXPORT_SYMBOL_GPL(__log_read_mmio);
30 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_read);
31
__log_post_read_mmio(u64 val,u8 width,const volatile void __iomem * addr)32 void __log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr)
33 {
34 trace_rwmmio_post_read(CALLER_ADDR0, val, width, addr);
35 }
36 EXPORT_SYMBOL_GPL(__log_post_read_mmio);
37 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_read);
38 #endif
39