LXR uboot/drivers/usb/dwc3/io.h

   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
  24static 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
  39static 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
  51static inline void dwc3_flush_cache(int addr, int length)
  52{
  53        flush_dcache_range(addr, addr + ROUND(length, CACHELINE_SIZE));
  54}
  55#endif /* __DRIVERS_USB_DWC3_IO_H */
  56