1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *

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65#include "cpu/thread_context.hh"
66#include "dev/io_device.hh"
67#include "dev/x86/intdev.hh"
68#include "params/X86LocalApic.hh"
69#include "sim/eventq.hh"
70
71class ThreadContext;
72
73namespace X86ISA
74{
75
76class Interrupts : public BasicPioDevice, IntDev
77{
78 protected:
79 // Storage for the APIC registers
80 uint32_t regs[NUM_APIC_REGS];
81
82 BitUnion32(LVTEntry)

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184 void requestInterrupt(uint8_t vector, uint8_t deliveryMode, bool level);
185
186 public:
187 /*
188 * Params stuff.
189 */
190 typedef X86LocalApicParams Params;
191
192 void setClock(Tick newClock)
193 {
194 clock = newClock;
195 }
196
197 const Params *
198 params() const
199 {
200 return dynamic_cast<const Params *>(_params);

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238 }
239
240 /*
241 * Functions to access and manipulate the APIC's registers.
242 */
243
244 uint32_t readReg(ApicRegIndex miscReg);
245 void setReg(ApicRegIndex reg, uint32_t val);
246 void setRegNoEffect(ApicRegIndex reg, uint32_t val)
247 {
248 regs[reg] = val;
249 }
250
251 /*
252 * Constructor.
253 */
254
255 Interrupts(Params * p) : BasicPioDevice(p), IntDev(this),
256 latency(p->pio_latency), clock(0),
257 apicTimerEvent(this),
258 pendingSmi(false), smiVector(0),
259 pendingNmi(false), nmiVector(0),
260 pendingExtInt(false), extIntVector(0),
261 pendingInit(false), initVector(0),
262 pendingUnmaskableInt(false)
263 {
264 pioSize = PageBytes;
265 memset(regs, 0, sizeof(regs));
266 //Set the local apic DFR to the flat model.
267 regs[APIC_DESTINATION_FORMAT] = (uint32_t)(-1);
268 ISRV = 0;
269 IRRV = 0;
270 }
271
272 /*
273 * Functions for retrieving interrupts for the CPU to handle.
274 */
275
276 bool check_interrupts(ThreadContext * tc) const;
277 Fault getInterrupt(ThreadContext * tc);
278 void updateIntrInfo(ThreadContext * tc);
279
280 /*
281 * Serialization.
282 */
283
284 void serialize(std::ostream & os)
285 {
286 panic("Interrupts::serialize unimplemented!\n");
287 }
288
289 void unserialize(Checkpoint * cp, const std::string & section)
290 {
291 panic("Interrupts::unserialize unimplemented!\n");
292 }
293
294 /*
295 * Old functions needed for compatability but which will be phased out
296 * eventually.
297 */
298 void post(int int_num, int index)
299 {
300 panic("Interrupts::post unimplemented!\n");
301 }
302
303 void clear(int int_num, int index)
304 {
305 panic("Interrupts::clear unimplemented!\n");
306 }
307
308 void clear_all()
309 {
310 panic("Interrupts::clear_all unimplemented!\n");
311 }
312};
313
314};
315
316#endif // __ARCH_X86_INTERRUPTS_HH__