2 * io.h - DesignWare USB3 DRD IO Header
4 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/io.h) and ported
12 * commit 2c4cbe6e5a : usb: dwc3: add tracepoints to aid debugging
14 * SPDX-License-Identifier: GPL-2.0
18 #ifndef __DRIVERS_USB_DWC3_IO_H
19 #define __DRIVERS_USB_DWC3_IO_H
23 #define CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
24 static inline u32 dwc3_readl(void __iomem *base, u32 offset)
26 unsigned long offs = offset - DWC3_GLOBALS_REGS_START;
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.
34 value = readl(base + offs);
39 static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
41 unsigned long offs = offset - DWC3_GLOBALS_REGS_START;
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.
48 writel(value, base + offs);
51 static inline void dwc3_flush_cache(uintptr_t addr, int length)
53 flush_dcache_range(addr, addr + ROUND(length, CACHELINE_SIZE));
55 #endif /* __DRIVERS_USB_DWC3_IO_H */