rocm-systems/test/ctrl/test_pmgr.cpp

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#include "ctrl/test_pmgr.h"

#include <atomic>

#include "ctrl/test_assert.h"

bool TestPMgr::AddPacketGfx9(const packet_t* packet) {
  packet_t aql_packet = *packet;

  // Compute the write index of queue and copy Aql packet into it
  uint64_t que_idx = hsa_queue_load_write_index_relaxed(GetQueue());
  const uint32_t mask = GetQueue()->size - 1;
  packet_t* slot = (reinterpret_cast<packet_t*>(GetQueue()->base_address)) + (que_idx & mask);

  // Disable packet so that submission to HW is complete
  const auto header = HSA_PACKET_TYPE_VENDOR_SPECIFIC << HSA_PACKET_HEADER_TYPE;
  aql_packet.header &= (~((1ul << HSA_PACKET_HEADER_WIDTH_TYPE) - 1)) << HSA_PACKET_HEADER_TYPE;
  aql_packet.header |= HSA_PACKET_TYPE_INVALID << HSA_PACKET_HEADER_TYPE;

  // Copy Aql packet into queue buffer
  *slot = aql_packet;
  // After AQL packet is fully copied into queue buffer
  // update packet header from invalid state to valid state
  auto header_atomic_ptr = reinterpret_cast<std::atomic<uint16_t>*>(&slot->header);
  header_atomic_ptr->store(header, std::memory_order_release);

  // Increment the write index and ring the doorbell to dispatch the kernel.
  hsa_queue_store_write_index_relaxed(GetQueue(), (que_idx + 1));
  hsa_signal_store_relaxed(GetQueue()->doorbell_signal, que_idx);

  return true;
}

bool TestPMgr::AddPacketGfx8(const packet_t* packet) {
  // Create legacy devices PM4 data
  const hsa_ext_amd_aql_pm4_packet_t* aql_packet = (const hsa_ext_amd_aql_pm4_packet_t*)packet;
  slot_pm4_t data;
  api_->hsa_ven_amd_aqlprofile_legacy_get_pm4(aql_packet, reinterpret_cast<void*>(data.words));

  // Compute the write index of queue and copy Aql packet into it
  uint64_t que_idx = hsa_queue_load_write_index_relaxed(GetQueue());
  const uint32_t mask = GetQueue()->size - 1;

  // Copy Aql/Pm4 blob into queue buffer
  packet_t* ptr = (reinterpret_cast<packet_t*>(GetQueue()->base_address)) + (que_idx & mask);
  slot_pm4_t* slot = reinterpret_cast<slot_pm4_t*>(ptr);
  for (unsigned i = 1; i < SLOT_PM4_SIZE_DW; ++i) {
    slot->words[i] = data.words[i];
  }
  // To maintain global order to ensure the prior copy of the packet contents is made visible
  // before the header is updated.
  // With in-order CP it will wait until the first packet in the blob will be valid
  std::atomic<uint32_t>* header_atomic_ptr =
      reinterpret_cast<std::atomic<uint32_t>*>(&slot->words[0]);
  header_atomic_ptr->store(data.words[0], std::memory_order_release);

  // Increment the write index and ring the doorbell to dispatch the kernel.
  que_idx += SLOT_PM4_SIZE_AQLP - 1;
  hsa_queue_store_write_index_relaxed(GetQueue(), (que_idx + 1));
  hsa_signal_store_relaxed(GetQueue()->doorbell_signal, que_idx);

  return true;
}

bool TestPMgr::AddPacket(const packet_t* packet) {
  const char* agent_name = GetAgentInfo()->name;
  return (strncmp(agent_name, "gfx8", 4) == 0) ? AddPacketGfx8(packet) : AddPacketGfx9(packet);
}

bool TestPMgr::Run() {
  // Build Aql Pkts
  const bool active = BuildPackets();
  if (active) {
    // Submit Pre-Dispatch Aql packet
    AddPacket(&pre_packet_);
  }

  Test()->Run();

  if (active) {
    // Set post packet completion signal
    post_packet_.completion_signal = post_signal_;

    // Submit Post-Dispatch Aql packet
    AddPacket(&post_packet_);

    // Wait for Post-Dispatch packet to complete
    hsa_signal_wait_acquire(post_signal_, HSA_SIGNAL_CONDITION_LT, 1, (uint64_t)-1,
                            HSA_WAIT_STATE_BLOCKED);

    // Dumping profiling data
    DumpData();
  }

  return true;
}

bool TestPMgr::Initialize(int argc, char** argv) {
  TestAql::Initialize(argc, argv);

  hsa_status_t status = HSA_STATUS_ERROR;
  status = hsa_signal_create(1, 0, NULL, &post_signal_);
  TEST_ASSERT(status == HSA_STATUS_SUCCESS);
  api_ = HsaRsrcFactory::Instance().AqlProfileApi();;

  return true;
}

TestPMgr::TestPMgr(TestAql* t) : TestAql(t), api_(NULL) {
  memset(&pre_packet_, 0, sizeof(pre_packet_));
  memset(&post_packet_, 0, sizeof(post_packet_));
  dummy_signal_.handle = 0;
  post_signal_ = dummy_signal_;
}