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58 #ifndef __ARCH_X86_INTERRUPTS_HH__
59 #define __ARCH_X86_INTERRUPTS_HH__
61 #include "arch/x86/apicregs.hh"
62 #include "arch/x86/faults.hh"
63 #include "base/bitfield.hh"
64 #include "cpu/thread_context.hh"
65 #include "dev/io_device.hh"
66 #include "dev/x86/intdev.hh"
67 #include "params/X86LocalApic.hh"
68 #include "sim/eventq.hh"
75 class Interrupts : public BasicPioDevice, IntDev
78 // Storage for the APIC registers
79 uint32_t regs[NUM_APIC_REGS];
82 * Timing related stuff.
87 class ApicTimerEvent : public Event
90 ApicTimerEvent() : Event()
95 warn("Local APIC timer event doesn't do anything!\n");
99 ApicTimerEvent apicTimerEvent;
102 * IRR and ISR maintenance.
108 findRegArrayMSB(ApicRegIndex base)
112 if (regs[base + offset] != 0) {
113 return offset * 32 + findMsbSet(regs[base + offset]);
122 IRRV = findRegArrayMSB(APIC_INTERRUPT_REQUEST_BASE);
128 ISRV = findRegArrayMSB(APIC_IN_SERVICE_BASE);
132 setRegArrayBit(ApicRegIndex base, uint8_t vector)
134 regs[base + (vector % 32)] |= (1 << (vector >> 5));
138 clearRegArrayBit(ApicRegIndex base, uint8_t vector)
140 regs[base + (vector % 32)] &= ~(1 << (vector >> 5));
144 getRegArrayBit(ApicRegIndex base, uint8_t vector)
146 return bits(regs[base + (vector % 32)], vector >> 5);
153 typedef X86LocalApicParams Params;
155 void setClock(Tick newClock)
163 return dynamic_cast<const Params *>(_params);
167 * Functions to interact with the interrupt port from IntDev.
169 Tick read(PacketPtr pkt);
170 Tick write(PacketPtr pkt);
171 Tick recvMessage(PacketPtr pkt);
173 void addressRanges(AddrRangeList &range_list)
176 range_list.push_back(RangeEx(x86LocalAPICAddress(0, 0),
177 x86LocalAPICAddress(0, 0) + PageBytes));
180 void getIntAddrRange(AddrRangeList &range_list)
183 range_list.push_back(RangeEx(x86InterruptAddress(0, 0),
184 x86InterruptAddress(0, 0) + PhysAddrAPICRangeSize));
187 Port *getPort(const std::string &if_name, int idx = -1)
189 if (if_name == "int_port")
191 return BasicPioDevice::getPort(if_name, idx);
195 * Functions to access and manipulate the APIC's registers.
198 uint32_t readReg(ApicRegIndex miscReg);
199 void setReg(ApicRegIndex reg, uint32_t val);
200 void setRegNoEffect(ApicRegIndex reg, uint32_t val)
209 Interrupts(Params * p) : BasicPioDevice(p), IntDev(this),
210 latency(p->pio_latency), clock(0)
213 memset(regs, 0, sizeof(regs));
214 //Set the local apic DFR to the flat model.
215 regs[APIC_DESTINATION_FORMAT] = (uint32_t)(-1);
221 * Functions for retrieving interrupts for the CPU to handle.
224 bool check_interrupts(ThreadContext * tc) const;
225 Fault getInterrupt(ThreadContext * tc);
226 void updateIntrInfo(ThreadContext * tc);
232 void serialize(std::ostream & os)
234 panic("Interrupts::serialize unimplemented!\n");
237 void unserialize(Checkpoint * cp, const std::string & section)
239 panic("Interrupts::unserialize unimplemented!\n");
243 * Old functions needed for compatability but which will be phased out
246 void post(int int_num, int index)
248 panic("Interrupts::post unimplemented!\n");
251 void clear(int int_num, int index)
253 panic("Interrupts::clear unimplemented!\n");
258 panic("Interrupts::clear_all unimplemented!\n");
264 #endif // __ARCH_X86_INTERRUPTS_HH__