1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Register read and write tracepoints
4 *
5 * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
6 */
7
8 #include <linux/ftrace.h>
9 #include <linux/module.h>
10 #include <asm-generic/io.h>
11
12 #define CREATE_TRACE_POINTS
13 #include <trace/events/rwmmio.h>
14
15 #ifdef CONFIG_TRACE_MMIO_ACCESS
log_write_mmio(u64 val,u8 width,volatile void __iomem * addr,unsigned long caller_addr)16 void log_write_mmio(u64 val, u8 width, volatile void __iomem *addr,
17 unsigned long caller_addr)
18 {
19 trace_rwmmio_write(caller_addr, val, width, addr);
20 }
21 EXPORT_SYMBOL_GPL(log_write_mmio);
22 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_write);
23
log_post_write_mmio(u64 val,u8 width,volatile void __iomem * addr,unsigned long caller_addr)24 void log_post_write_mmio(u64 val, u8 width, volatile void __iomem *addr,
25 unsigned long caller_addr)
26 {
27 trace_rwmmio_post_write(caller_addr, val, width, addr);
28 }
29 EXPORT_SYMBOL_GPL(log_post_write_mmio);
30 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_write);
31
log_read_mmio(u8 width,const volatile void __iomem * addr,unsigned long caller_addr)32 void log_read_mmio(u8 width, const volatile void __iomem *addr,
33 unsigned long caller_addr)
34 {
35 trace_rwmmio_read(caller_addr, width, addr);
36 }
37 EXPORT_SYMBOL_GPL(log_read_mmio);
38 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_read);
39
log_post_read_mmio(u64 val,u8 width,const volatile void __iomem * addr,unsigned long caller_addr)40 void log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr,
41 unsigned long caller_addr)
42 {
43 trace_rwmmio_post_read(caller_addr, val, width, addr);
44 }
45 EXPORT_SYMBOL_GPL(log_post_read_mmio);
46 EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_read);
47 #endif /* CONFIG_TRACE_MMIO_ACCESS */
48