2 * io.h - DesignWare USB3 DRD IO Header
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 of
11 * the License as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #ifndef __DRIVERS_USB_DWC3_IO_H
20 #define __DRIVERS_USB_DWC3_IO_H
27 static inline u32 dwc3_readl(void __iomem *base, u32 offset)
29 u32 offs = offset - DWC3_GLOBALS_REGS_START;
33 * We requested the mem region starting from the Globals address
34 * space, see dwc3_probe in core.c.
35 * However, the offsets are given starting from xHCI address space.
37 value = readl(base + offs);
40 * When tracing we want to make it easy to find the correct address on
41 * documentation, so we revert it back to the proper addresses, the
42 * same way they are described on SNPS documentation
44 dwc3_trace(trace_dwc3_readl, "addr %p value %08x",
45 base - DWC3_GLOBALS_REGS_START + offset, value);
50 static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
52 u32 offs = offset - DWC3_GLOBALS_REGS_START;
55 * We requested the mem region starting from the Globals address
56 * space, see dwc3_probe in core.c.
57 * However, the offsets are given starting from xHCI address space.
59 writel(value, base + offs);
62 * When tracing we want to make it easy to find the correct address on
63 * documentation, so we revert it back to the proper addresses, the
64 * same way they are described on SNPS documentation
66 dwc3_trace(trace_dwc3_writel, "addr %p value %08x",
67 base - DWC3_GLOBALS_REGS_START + offset, value);
70 #endif /* __DRIVERS_USB_DWC3_IO_H */