diff options
Diffstat (limited to 'src/dev/tsunami_io.hh')
| -rw-r--r-- | src/dev/tsunami_io.hh | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/src/dev/tsunami_io.hh b/src/dev/tsunami_io.hh deleted file mode 100644 index 5ea3628c1..000000000 --- a/src/dev/tsunami_io.hh +++ /dev/null @@ -1,361 +0,0 @@ -/* - * Copyright (c) 2004-2005 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Authors: Ali Saidi - * Andrew Schultz - * Miguel Serrano - */ - -/** @file - * Tsunami I/O Space mapping including RTC/timer interrupts - */ - -#ifndef __DEV_TSUNAMI_IO_HH__ -#define __DEV_TSUNAMI_IO_HH__ - -#include "dev/io_device.hh" -#include "base/range.hh" -#include "dev/tsunami.hh" -#include "sim/eventq.hh" - -/** - * Tsunami I/O device is a catch all for all the south bridge stuff we care - * to implement. - */ -class TsunamiIO : public BasicPioDevice -{ - private: - struct tm tm; - - protected: - /** Real-Time Clock (MC146818) */ - class RTC - { - private: - /** Event for RTC periodic interrupt */ - struct RTCEvent : public Event - { - /** A pointer back to tsunami to create interrupt the processor. */ - Tsunami* tsunami; - Tick interval; - - RTCEvent(Tsunami* t, Tick i); - - /** Schedule the RTC periodic interrupt */ - void scheduleIntr(); - - /** Event process to occur at interrupt*/ - virtual void process(); - - /** Event description */ - virtual const char *description(); - }; - - private: - std::string _name; - const std::string &name() const { return _name; } - - /** RTC periodic interrupt event */ - RTCEvent event; - - /** Current RTC register address/index */ - int addr; - - /** Data for real-time clock function */ - union { - uint8_t clock_data[10]; - - struct { - uint8_t sec; - uint8_t sec_alrm; - uint8_t min; - uint8_t min_alrm; - uint8_t hour; - uint8_t hour_alrm; - uint8_t wday; - uint8_t mday; - uint8_t mon; - uint8_t year; - }; - }; - - /** RTC status register A */ - uint8_t stat_regA; - - /** RTC status register B */ - uint8_t stat_regB; - - public: - RTC(const std::string &name, Tsunami* t, Tick i); - - /** Set the initial RTC time/date */ - void set_time(time_t t); - - /** RTC address port: write address of RTC RAM data to access */ - void writeAddr(const uint8_t data); - - /** RTC write data */ - void writeData(const uint8_t data); - - /** RTC read data */ - uint8_t readData(); - - /** - * Serialize this object to the given output stream. - * @param base The base name of the counter object. - * @param os The stream to serialize to. - */ - void serialize(const std::string &base, std::ostream &os); - - /** - * Reconstruct the state of this object from a checkpoint. - * @param base The base name of the counter object. - * @param cp The checkpoint use. - * @param section The section name of this object - */ - void unserialize(const std::string &base, Checkpoint *cp, - const std::string §ion); - }; - - /** Programmable Interval Timer (Intel 8254) */ - class PITimer - { - /** Counter element for PIT */ - class Counter - { - /** Event for counter interrupt */ - class CounterEvent : public Event - { - private: - /** Pointer back to Counter */ - Counter* counter; - Tick interval; - - public: - CounterEvent(Counter*); - - /** Event process */ - virtual void process(); - - /** Event description */ - virtual const char *description(); - - friend class Counter; - }; - - private: - std::string _name; - const std::string &name() const { return _name; } - - CounterEvent event; - - /** Current count value */ - uint16_t count; - - /** Latched count */ - uint16_t latched_count; - - /** Interrupt period */ - uint16_t period; - - /** Current mode of operation */ - uint8_t mode; - - /** Output goes high when the counter reaches zero */ - bool output_high; - - /** State of the count latch */ - bool latch_on; - - /** Set of values for read_byte and write_byte */ - enum {LSB, MSB}; - - /** Determine which byte of a 16-bit count value to read/write */ - uint8_t read_byte, write_byte; - - public: - Counter(const std::string &name); - - /** Latch the current count (if one is not already latched) */ - void latchCount(); - - /** Set the read/write mode */ - void setRW(int rw_val); - - /** Set operational mode */ - void setMode(int mode_val); - - /** Set count encoding */ - void setBCD(int bcd_val); - - /** Read a count byte */ - uint8_t read(); - - /** Write a count byte */ - void write(const uint8_t data); - - /** Is the output high? */ - bool outputHigh(); - - /** - * Serialize this object to the given output stream. - * @param base The base name of the counter object. - * @param os The stream to serialize to. - */ - void serialize(const std::string &base, std::ostream &os); - - /** - * Reconstruct the state of this object from a checkpoint. - * @param base The base name of the counter object. - * @param cp The checkpoint use. - * @param section The section name of this object - */ - void unserialize(const std::string &base, Checkpoint *cp, - const std::string §ion); - }; - - private: - std::string _name; - const std::string &name() const { return _name; } - - /** PIT has three seperate counters */ - Counter *counter[3]; - - public: - /** Public way to access individual counters (avoid array accesses) */ - Counter counter0; - Counter counter1; - Counter counter2; - - PITimer(const std::string &name); - - /** Write control word */ - void writeControl(const uint8_t data); - - /** - * Serialize this object to the given output stream. - * @param base The base name of the counter object. - * @param os The stream to serialize to. - */ - void serialize(const std::string &base, std::ostream &os); - - /** - * Reconstruct the state of this object from a checkpoint. - * @param base The base name of the counter object. - * @param cp The checkpoint use. - * @param section The section name of this object - */ - void unserialize(const std::string &base, Checkpoint *cp, - const std::string §ion); - }; - - /** Mask of the PIC1 */ - uint8_t mask1; - - /** Mask of the PIC2 */ - uint8_t mask2; - - /** Mode of PIC1. Not used for anything */ - uint8_t mode1; - - /** Mode of PIC2. Not used for anything */ - uint8_t mode2; - - /** Raw PIC interrupt register before masking */ - uint8_t picr; //Raw PIC interrput register - - /** Is the pic interrupting right now or not. */ - bool picInterrupting; - - /** A pointer to the Tsunami device which be belong to */ - Tsunami *tsunami; - - /** Intel 8253 Periodic Interval Timer */ - PITimer pitimer; - - RTC rtc; - - /** The interval is set via two writes to the PIT. - * This variable contains a flag as to how many writes have happened, and - * the time so far. - */ - uint16_t timerData; - - public: - /** - * Return the freqency of the RTC - * @return interrupt rate of the RTC - */ - Tick frequency() const; - - struct Params : public BasicPioDevice::Params - { - Tick frequency; - Tsunami *tsunami; - time_t init_time; - }; - protected: - const Params *params() const { return (const Params*)_params; } - - public: - /** - * Initialize all the data for devices supported by Tsunami I/O. - * @param p pointer to Params struct - */ - TsunamiIO(Params *p); - - virtual Tick read(PacketPtr pkt); - virtual Tick write(PacketPtr pkt); - - /** - * Post an PIC interrupt to the CPU via the CChip - * @param bitvector interrupt to post. - */ - void postPIC(uint8_t bitvector); - - /** - * Clear a posted interrupt - * @param bitvector interrupt to clear - */ - void clearPIC(uint8_t bitvector); - - /** - * Serialize this object to the given output stream. - * @param os The stream to serialize to. - */ - virtual void serialize(std::ostream &os); - - /** - * Reconstruct the state of this object from a checkpoint. - * @param cp The checkpoint use. - * @param section The section name of this object - */ - virtual void unserialize(Checkpoint *cp, const std::string §ion); - -}; - -#endif // __DEV_TSUNAMI_IO_HH__ |