u-boot/drivers/usb/dwc3/io.h
Philipp Tomsich b7bf4a9592 usb: dwc3: ensure consistent types for dwc3_flush_cache
The dwc3_flush_cache() call was declared and used inconsistently:
 * The declaration assumed 'int' for addresses (a potential issue
   when running in a LP64 memory model).
 * The invocation cast the address to 'long'.

This change ensures that both the declaration and usage of this
function consistently uses 'uintptr_t' for correct behaviour even
when the allocated buffers (to be flushed) reside outside of the
lower 32bits of memory.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-04-14 16:44:16 +02:00

55 lines
1.4 KiB
C

/**
* io.h - DesignWare USB3 DRD IO Header
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
* Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/io.h) and ported
* to uboot.
*
* commit 2c4cbe6e5a : usb: dwc3: add tracepoints to aid debugging
*
* SPDX-License-Identifier: GPL-2.0
*
*/
#ifndef __DRIVERS_USB_DWC3_IO_H
#define __DRIVERS_USB_DWC3_IO_H
#include <asm/io.h>
#define CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
static inline u32 dwc3_readl(void __iomem *base, u32 offset)
{
unsigned long offs = offset - DWC3_GLOBALS_REGS_START;
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 + offs);
return value;
}
static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
{
unsigned long offs = offset - DWC3_GLOBALS_REGS_START;
/*
* 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 + offs);
}
static inline void dwc3_flush_cache(uintptr_t addr, int length)
{
flush_dcache_range(addr, addr + ROUND(length, CACHELINE_SIZE));
}
#endif /* __DRIVERS_USB_DWC3_IO_H */