2 * Copyright (c) 2004 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * Emulation of the Tsunami CChip CSRs
33 #ifndef __TSUNAMI_CCHIP_HH__
34 #define __TSUNAMI_CCHIP_HH__
36 #include "mem/functional_mem/functional_memory.hh"
37 #include "dev/tsunami.hh"
42 class TsunamiCChip : public FunctionalMemory
45 /** The base address of this device */
48 /** The size of mappad from the above address */
49 static const Addr size = 0xfff;
53 * pointer to the tsunami object.
54 * This is our access to all the other tsunami
60 * The dims are device interrupt mask registers.
61 * One exists for each CPU, the DRIR X DIM = DIR
63 uint64_t dim[Tsunami::Max_CPUs];
66 * The dirs are device interrupt registers.
67 * One exists for each CPU, the DRIR X DIM = DIR
69 uint64_t dir[Tsunami::Max_CPUs];
70 bool dirInterrupting[Tsunami::Max_CPUs];
73 * This register contains bits for each PCI interrupt
79 * The MISC register contains the CPU we are currently on
80 * as well as bits to ack RTC and IPI interrupts.
84 /** Count of the number of pending IPIs on a CPU */
85 uint64_t ipiInterrupting[Tsunami::Max_CPUs];
87 /** Indicator of which CPUs have had an RTC interrupt */
88 bool RTCInterrupting[Tsunami::Max_CPUs];
92 * Initialize the Tsunami CChip by setting all of the
93 * device register to 0.
94 * @param name name of this device.
95 * @param t pointer back to the Tsunami object that we belong to.
96 * @param a address we are mapped at.
97 * @param mmu pointer to the memory controller that sends us events.
99 TsunamiCChip(const std::string &name, Tsunami *t, Addr a,
100 MemoryController *mmu);
103 * Process a read to the CChip.
104 * @param req Contains the address to read from.
105 * @param data A pointer to write the read data to.
106 * @return The fault condition of the access.
108 virtual Fault read(MemReqPtr &req, uint8_t *data);
112 * Process a write to the CChip.
113 * @param req Contains the address to write to.
114 * @param data The data to write.
115 * @return The fault condition of the access.
117 virtual Fault write(MemReqPtr &req, const uint8_t *data);
120 * post an RTC interrupt to the CPU
125 * post an interrupt to the CPU.
126 * @param interrupt the interrupt number to post (0-64)
128 void postDRIR(uint32_t interrupt);
131 * clear an interrupt previously posted to the CPU.
132 * @param interrupt the interrupt number to post (0-64)
134 void clearDRIR(uint32_t interrupt);
137 * Serialize this object to the given output stream.
138 * @param os The stream to serialize to.
140 virtual void serialize(std::ostream &os);
143 * Reconstruct the state of this object from a checkpoint.
144 * @param cp The checkpoint use.
145 * @param section The section name of this object
147 virtual void unserialize(Checkpoint *cp, const std::string §ion);
150 #endif // __TSUNAMI_CCHIP_HH__