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 #define CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE 24 static inline u32 dwc3_readl(void __iomem *base, u32 offset) 25 { 26 unsigned long offs = offset - DWC3_GLOBALS_REGS_START; 27 u32 value; 28 29 /* 30 * We requested the mem region starting from the Globals address 31 * space, see dwc3_probe in core.c. 32 * However, the offsets are given starting from xHCI address space. 33 */ 34 value = readl(base + offs); 35 36 return value; 37 } 38 39 static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) 40 { 41 unsigned long offs = offset - DWC3_GLOBALS_REGS_START; 42 43 /* 44 * We requested the mem region starting from the Globals address 45 * space, see dwc3_probe in core.c. 46 * However, the offsets are given starting from xHCI address space. 47 */ 48 writel(value, base + offs); 49 } 50 51 static inline void dwc3_flush_cache(uintptr_t addr, int length) 52 { 53 flush_dcache_range(addr, addr + ROUND(length, CACHELINE_SIZE)); 54 } 55 #endif /* __DRIVERS_USB_DWC3_IO_H */ 56