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[/] [zipcpu/] [trunk/] [sw/] [zipdbg/] [devbus.h] - Rev 181
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/////////////////////////////////////////////////////////////////////////////// // // Filename: devbus.h // // Project: UART to WISHBONE FPGA library // // Purpose: The purpose of this file is to document an interface which // any devic with a bus, whether it be implemented over a UART, // an ethernet, or a PCI express bus, must implement. This // describes only an interface, and not how that interface is // to be accomplished. // // Creator: Dan Gisselquist // Gisselquist Technology, LLC // /////////////////////////////////////////////////////////////////////////////// // // Copyright (C) 2015, Gisselquist Technology, LLC // // This program is free software (firmware): you can redistribute it and/or // modify it under the terms of the GNU General Public License as published // by the Free Software Foundation, either version 3 of the License, or (at // your option) any later version. // // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // License: GPL, v3, as defined and found on www.gnu.org, // http://www.gnu.org/licenses/gpl.html // // /////////////////////////////////////////////////////////////////////////////// // // #ifndef DEVBUS_H #define DEVBUS_H #include <unistd.h> typedef unsigned int uint32; class BUSERR { public: uint32 addr; BUSERR(const uint32 a) : addr(a) {}; }; class DEVBUS { public: typedef uint32 BUSW; virtual void kill(void) = 0; virtual void close(void) = 0; // Write a single value to a single address virtual void writeio(const BUSW a, const BUSW v) = 0; // Read a single value to a single address virtual BUSW readio(const BUSW a) = 0; // Read a series of values from values from a block of memory virtual void readi(const BUSW a, const int len, BUSW *buf) = 0; // Read a series of values from the same address in memory virtual void readz(const BUSW a, const int len, BUSW *buf) = 0; virtual void writei(const BUSW a, const int len, const BUSW *buf) = 0; virtual void writez(const BUSW a, const int len, const BUSW *buf) = 0; // Query whether or not an interrupt has taken place virtual bool poll(void) = 0; // Sleep until interrupt, but sleep no longer than msec milliseconds virtual void usleep(unsigned msec) = 0; // Sleep until an interrupt, no matter how long it takes for that // interrupt to take place virtual void wait(void) = 0; // Query whether or not a bus error has taken place. This is somewhat // of a misnomer, as my current bus error detection code exits any // interface, but ... it is what it is. virtual bool bus_err(void) const = 0; // Clear any bus error condition. virtual void reset_err(void) = 0; // Clear any interrupt condition that has already been noticed by // the interface, does not check for further interrupt virtual void clear(void) = 0; }; #endif
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