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https://review.haiku-os.org/haiku
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57a2ea0d54
* Enable/Disable makes more sense and matches platform loader serial functions. * Rework PL011 code after finding a PDF covering the details of it. * Rename UART global defines in loader to be more exact about location
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
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* Copyright (c) 2008 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __DEV_UART_8250_H
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#define __DEV_UART_8250_H
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#include <SupportDefs.h>
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#include <sys/types.h>
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class Uart8250 {
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public:
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Uart8250(addr_t base);
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~Uart8250();
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void InitEarly();
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void Init();
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void InitPort(uint32 baud);
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void Enable();
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void Disable();
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int PutChar(char c);
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int GetChar(bool wait);
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void FlushTx();
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void FlushRx();
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private:
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void WriteUart(uint32 reg, unsigned char data);
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unsigned char ReadUart(uint32 reg);
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bool fUARTEnabled;
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addr_t fUARTBase;
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};
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#endif
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