// SPDX-License-Identifier: GPL-2.0 /** * io.h - DesignWare USB3 DRD IO Header * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> */ #ifndef __DRIVERS_USB_DWC3_IO_H #define __DRIVERS_USB_DWC3_IO_H #include <linux/io.h> #include "trace.h" #include "debug.h" #include "core.h" static inline u32 dwc3_readl(void __iomem *base, u32 offset) { u32 value; /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ value = readl(base + offset - DWC3_GLOBALS_REGS_START); /* * When tracing we want to make it easy to find the correct address on * documentation, so we revert it back to the proper addresses, the * same way they are described on SNPS documentation */ trace_dwc3_readl(base - DWC3_GLOBALS_REGS_START, offset, value); return value; } static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) { /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ writel(value, base + offset - DWC3_GLOBALS_REGS_START); /* * When tracing we want to make it easy to find the correct address on * documentation, so we revert it back to the proper addresses, the * same way they are described on SNPS documentation */ trace_dwc3_writel(base - DWC3_GLOBALS_REGS_START, offset, value); } #endif /* __DRIVERS_USB_DWC3_IO_H */