58 lines
1.2 KiB
C++
58 lines
1.2 KiB
C++
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/*
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* Copyright 2012 Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* François Revol, [email protected]
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*/
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#ifndef _KERNEL_ARCH_DEBUG_UART_H
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#define _KERNEL_ARCH_DEBUG_UART_H
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#include <sys/types.h>
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#include <SupportDefs.h>
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class DebugUART {
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public:
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DebugUART(addr_t base, int64 clock)
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: fBase(base),
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fClock(clock),
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fEnabled(true) {};
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~DebugUART() {};
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virtual void InitEarly() {};
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virtual void Init() {};
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virtual void InitPort(uint32 baud) {};
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virtual void Enable() { fEnabled = true; }
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virtual void Disable() { fEnabled = false; }
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virtual int PutChar(char c) = 0;
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virtual int GetChar(bool wait) = 0;
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virtual void FlushTx() = 0;
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virtual void FlushRx() = 0;
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addr_t Base() const { return fBase; }
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int64 Clock() const { return fClock; }
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bool Enabled() const { return fEnabled; }
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protected:
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// default MMIO
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virtual void Out8(int reg, uint8 value)
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{ *((uint8 *)Base() + reg) = value; }
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virtual uint8 In8(int reg)
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{ return *((uint8 *)Base() + reg); }
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virtual void Barrier() {}
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private:
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addr_t fBase;
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int64 fClock;
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bool fEnabled;
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};
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#endif /* _KERNEL_ARCH_DEBUG_UART_H */
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