2eb8801650
By adding a pointer to endpoint registers' base address, we can avoid using our controller-wide struct dwc3 pointer for everything. At some point this will allow us to have per-endpoint locks which will, in turn, let us queue requests to separate endpoints in parallel. Because of this change our debugfs interface and io accessors need to be changed accordingly. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/**
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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 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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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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/*
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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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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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