1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Register read and write tracepoints 4 * 5 * Copyright (c) 2021-2022 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 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 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 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 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