gem5  v22.0.0.2
lupio_pic.hh
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28 
29 #ifndef __DEV_LUPIO_LUPIO_PIC_HH__
30 #define __DEV_LUPIO_LUPIO_PIC_HH__
31 
32 #include "arch/riscv/interrupts.hh"
33 #include "dev/io_device.hh"
34 #include "dev/platform.hh"
35 #include "params/LupioPIC.hh"
36 #include "sim/system.hh"
37 
38 #define LUPIO_PIC_NSRC 32
39 
40 namespace gem5
41 {
42 
49 class LupioPIC : public BasicPioDevice
50 {
51  protected:
53  int nSrc;
54  int nThread;
55  // Type of interrupt
56  int intType;
57 
58  const ByteOrder byteOrder = ByteOrder::little;
59 
60  // Register map
61  private:
62  enum
63  {
68 
69  // Max offset
71  };
72 
73  uint32_t pending = 0;
74  // Register for masking or unmasking up to 32 sources
75  uint32_t mask[LUPIO_PIC_NSRC];
76  // Regitser to determine which input IRQ is routed to the
77  // corresponding processor
79 
80  protected:
84  uint64_t lupioPicRead(const uint8_t addr);
88  void lupioPicWrite(const uint8_t addr, uint64_t val64);
92  void lupioPicUpdateIRQ();
93 
94  public:
96  LupioPIC(const Params &params);
97 
98  void post(int src_id);
99  void clear(int src_id);
103  Tick read(PacketPtr pkt) override;
104  Tick write(PacketPtr pkt) override;
105 };
106 
107 } // namespace gem5
108 
109 #endif // __DEV_LUPIO_LUPIO_PIC_HH_
io_device.hh
gem5::LupioPIC::LUPIO_PIC_MAX
@ LUPIO_PIC_MAX
Definition: lupio_pic.hh:70
system.hh
gem5::LupioPIC::pending
uint32_t pending
Definition: lupio_pic.hh:73
gem5::LupioPIC::lupioPicWrite
void lupioPicWrite(const uint8_t addr, uint64_t val64)
Function to update interrupt requests.
Definition: lupio_pic.cc:123
gem5::LupioPIC::post
void post(int src_id)
Definition: lupio_pic.cc:69
interrupts.hh
gem5::LupioPIC::byteOrder
const ByteOrder byteOrder
Definition: lupio_pic.hh:58
gem5::LupioPIC::PARAMS
PARAMS(LupioPIC)
gem5::LupioPIC::enable
uint32_t enable[LUPIO_PIC_NSRC]
Definition: lupio_pic.hh:78
gem5::PioDevice::Params
PioDeviceParams Params
Definition: io_device.hh:134
LUPIO_PIC_NSRC
#define LUPIO_PIC_NSRC
Definition: lupio_pic.hh:38
gem5::System
Definition: system.hh:75
gem5::SimObject::params
const Params & params() const
Definition: sim_object.hh:176
gem5::Packet
A Packet is used to encapsulate a transfer between two objects in the memory system (e....
Definition: packet.hh:291
gem5::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
gem5::LupioPIC::LUPIO_PIC_PEND
@ LUPIO_PIC_PEND
Definition: lupio_pic.hh:66
gem5::LupioPIC::LUPIO_PIC_ENAB
@ LUPIO_PIC_ENAB
Definition: lupio_pic.hh:67
gem5::LupioPIC::read
Tick read(PacketPtr pkt) override
Implement BasicPioDevice virtual functions.
Definition: lupio_pic.cc:150
platform.hh
gem5::LupioPIC::nThread
int nThread
Definition: lupio_pic.hh:54
gem5::LupioPIC::clear
void clear(int src_id)
Definition: lupio_pic.cc:79
gem5::LupioPIC::LupioPIC
LupioPIC(const Params &params)
Definition: lupio_pic.cc:40
gem5::LupioPIC::lupioPicRead
uint64_t lupioPicRead(const uint8_t addr)
Function to return information about interrupt requests to the LupIO-PIC.
Definition: lupio_pic.cc:89
gem5::LupioPIC
LupioPIC: A programmable interrupt controller virtual device that can manage input IRQs coming from u...
Definition: lupio_pic.hh:49
gem5::LupioPIC::intType
int intType
Definition: lupio_pic.hh:56
gem5::LupioPIC::system
System * system
Definition: lupio_pic.hh:52
gem5::LupioPIC::nSrc
int nSrc
Definition: lupio_pic.hh:53
gem5::LupioPIC::mask
uint32_t mask[LUPIO_PIC_NSRC]
Definition: lupio_pic.hh:75
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: gpu_translation_state.hh:37
gem5::BasicPioDevice
Definition: io_device.hh:147
gem5::LupioPIC::LUPIO_PIC_PRIO
@ LUPIO_PIC_PRIO
Definition: lupio_pic.hh:64
gem5::LupioPIC::LUPIO_PIC_MASK
@ LUPIO_PIC_MASK
Definition: lupio_pic.hh:65
gem5::LupioPIC::write
Tick write(PacketPtr pkt) override
Pure virtual function that the device must implement.
Definition: lupio_pic.cc:166
gem5::LupioPIC::lupioPicUpdateIRQ
void lupioPicUpdateIRQ()
Function to post and clear interrupts.
Definition: lupio_pic.cc:55
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84

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