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57 lines
1.6 KiB
57 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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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 - https://www.ti.com |
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* |
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* Authors: Felipe Balbi <[email protected]>, |
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* Sebastian Andrzej Siewior <[email protected]> |
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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 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 + offset - DWC3_GLOBALS_REGS_START); |
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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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trace_dwc3_readl(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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/* |
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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 + offset - DWC3_GLOBALS_REGS_START); |
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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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trace_dwc3_writel(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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