1 /** 2 * io.h - DesignWare USB3 DRD IO Header 3 * 4 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com 5 * 6 * Authors: Felipe Balbi <balbi@ti.com>, 7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 8 * 9 * Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/io.h) and ported 10 * to uboot. 11 * 12 * commit 2c4cbe6e5a : usb: dwc3: add tracepoints to aid debugging 13 * 14 * SPDX-License-Identifier: GPL-2.0 15 * 16 */ 17 18 #ifndef __DRIVERS_USB_DWC3_IO_H 19 #define __DRIVERS_USB_DWC3_IO_H 20 21 #include <asm/io.h> 22 23 static inline u32 dwc3_readl(void __iomem *base, u32 offset) 24 { 25 u32 offs = offset - DWC3_GLOBALS_REGS_START; 26 u32 value; 27 28 /* 29 * We requested the mem region starting from the Globals address 30 * space, see dwc3_probe in core.c. 31 * However, the offsets are given starting from xHCI address space. 32 */ 33 value = readl(base + offs); 34 35 return value; 36 } 37 38 static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) 39 { 40 u32 offs = offset - DWC3_GLOBALS_REGS_START; 41 42 /* 43 * We requested the mem region starting from the Globals address 44 * space, see dwc3_probe in core.c. 45 * However, the offsets are given starting from xHCI address space. 46 */ 47 writel(value, base + offs); 48 } 49 50 #endif /* __DRIVERS_USB_DWC3_IO_H */ 51