projects / linux-block.git / blame
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| 5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
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2 | /** |
| 3 | * io.h - DesignWare USB3 DRD IO Header | |
| 4 | * | |
| 5 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
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6 | * |
| 7 | * Authors: Felipe Balbi <balbi@ti.com>, | |
| 8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
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9 | */ |
| 10 | ||
| 11 | #ifndef __DRIVERS_USB_DWC3_IO_H | |
| 12 | #define __DRIVERS_USB_DWC3_IO_H | |
| 13 | ||
| 25b8ff68 | 14 | #include <linux/io.h> |
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15 | #include "trace.h" |
| 16 | #include "debug.h" | |
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17 | #include "core.h" |
| 18 | ||
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19 | static inline u32 dwc3_readl(void __iomem *base, u32 offset) |
| 20 | { | |
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21 | u32 value; |
| 22 | ||
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23 | /* |
| 24 | * We requested the mem region starting from the Globals address | |
| 25 | * space, see dwc3_probe in core.c. | |
| 26 | * However, the offsets are given starting from xHCI address space. | |
| 27 | */ | |
| 2eb88016 | 28 | value = readl(base + offset - DWC3_GLOBALS_REGS_START); |
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29 | |
| 30 | /* | |
| 31 | * When tracing we want to make it easy to find the correct address on | |
| 32 | * documentation, so we revert it back to the proper addresses, the | |
| 33 | * same way they are described on SNPS documentation | |
| 34 | */ | |
| 4dd5a69e | 35 | trace_dwc3_readl(base - DWC3_GLOBALS_REGS_START, offset, value); |
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36 | |
| 37 | return value; | |
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38 | } |
| 39 | ||
| 40 | static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) | |
| 41 | { | |
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42 | /* |
| 43 | * We requested the mem region starting from the Globals address | |
| 44 | * space, see dwc3_probe in core.c. | |
| 45 | * However, the offsets are given starting from xHCI address space. | |
| 46 | */ | |
| 2eb88016 | 47 | writel(value, base + offset - DWC3_GLOBALS_REGS_START); |
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48 | |
| 49 | /* | |
| 50 | * When tracing we want to make it easy to find the correct address on | |
| 51 | * documentation, so we revert it back to the proper addresses, the | |
| 52 | * same way they are described on SNPS documentation | |
| 53 | */ | |
| 4dd5a69e | 54 | trace_dwc3_writel(base - DWC3_GLOBALS_REGS_START, offset, value); |
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55 | } |
| 56 | ||
| 57 | #endif /* __DRIVERS_USB_DWC3_IO_H */ |