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70 lines
2.1 KiB
70 lines
2.1 KiB
/** |
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* io.h - DesignWare USB3 DRD IO Header |
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* |
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* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com |
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* |
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* Authors: Felipe Balbi <balbi@ti.com>, |
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* Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 of |
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* the License as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#ifndef __DRIVERS_USB_DWC3_IO_H |
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#define __DRIVERS_USB_DWC3_IO_H |
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#include <linux/io.h> |
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#include "trace.h" |
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#include "debug.h" |
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#include "core.h" |
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static inline u32 dwc3_readl(void __iomem *base, u32 offset) |
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{ |
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u32 offs = offset - DWC3_GLOBALS_REGS_START; |
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u32 value; |
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/* |
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* We requested the mem region starting from the Globals address |
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* space, see dwc3_probe in core.c. |
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* However, the offsets are given starting from xHCI address space. |
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*/ |
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value = readl(base + offs); |
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/* |
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* When tracing we want to make it easy to find the correct address on |
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* documentation, so we revert it back to the proper addresses, the |
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* same way they are described on SNPS documentation |
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*/ |
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dwc3_trace(trace_dwc3_readl, "addr %p value %08x", |
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base - DWC3_GLOBALS_REGS_START + offset, value); |
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return value; |
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} |
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static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) |
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{ |
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u32 offs = offset - DWC3_GLOBALS_REGS_START; |
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/* |
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* We requested the mem region starting from the Globals address |
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* space, see dwc3_probe in core.c. |
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* However, the offsets are given starting from xHCI address space. |
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*/ |
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writel(value, base + offs); |
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/* |
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* When tracing we want to make it easy to find the correct address on |
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* documentation, so we revert it back to the proper addresses, the |
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* same way they are described on SNPS documentation |
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*/ |
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dwc3_trace(trace_dwc3_writel, "addr %p value %08x", |
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base - DWC3_GLOBALS_REGS_START + offset, value); |
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} |
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#endif /* __DRIVERS_USB_DWC3_IO_H */
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