//
// Copyright (c) 2010 Advanced Micro Devices, Inc. All rights reserved.
//
#ifndef GPUSCHED_HPP_
#define GPUSCHED_HPP_

#include "hsa.h"

namespace gpu {

//! AmdAqlWrap slot state
enum AqlWrapState {
  AQL_WRAP_FREE = 0,
  AQL_WRAP_RESERVED,
  AQL_WRAP_READY,
  AQL_WRAP_MARKER,
  AQL_WRAP_BUSY,
  AQL_WRAP_DONE
};

struct AmdVQueueHeader {
  uint32_t aql_slot_num;     //!< [LRO/SRO] The total number of the AQL slots (multiple of 64).
  uint32_t event_slot_num;   //!< [LRO] The number of kernel events in the events buffer
  uint64_t event_slot_mask;  //!< [LRO] A pointer to the allocation bitmask array for the events
  uint64_t event_slots;      //!< [LRO] Pointer to a buffer for the events.
                             // Array of event_slot_num entries of AmdEvent
  uint64_t aql_slot_mask;    //!< [LRO/SRO]A pointer to the allocation bitmask for aql_warp slots
  uint32_t command_counter;  //!< [LRW] The global counter for the submitted commands into the queue
  uint32_t wait_size;        //!< [LRO] The wait list size (in clk_event_t)
  uint32_t arg_size;         //!< [LRO] The size of argument buffer (in bytes)
  uint32_t mask_groups;      //!< Processed mask groups by one thread
  uint64_t
      kernel_table;  //!< [LRO] Pointer to an array with all kernel objects (ulong for each entry)
  uint32_t reserved[2];  //!< For the future usage
};

struct AmdAqlWrap {
  uint32_t state;  //!< [LRW/SRW] The current state of the AQL wrapper:  FREE, RESERVED, READY,
                   // MARKER, BUSY and DONE. The block could be returned back to a free state.
  uint32_t enqueue_flags;  //!< [LWO/SRO] Contains the flags for the kernel execution start
  uint32_t command_id;     //!< [LWO/SRO] The unique command ID
  uint32_t child_counter;  //!< [LRW/SRW] Counter that determine the launches of child kernels.
                           // It’s incremented on the
  // start and decremented on the finish. The parent kernel can be considered as
  // done when the value is 0 and the state is DONE
  uint64_t completion;   //!< [LWO/SRO] CL event for the current execution (clk_event_t)
  uint64_t parent_wrap;  //!< [LWO/SRO] Pointer to the parent AQL wrapper (AmdAqlWrap*)
  uint64_t wait_list;  //!< [LRO/SRO] Pointer to an array of clk_event_t objects (64 bytes default)
  uint32_t wait_num;   //!< [LWO/SRO] The number of cl_event_wait objects
  uint32_t reserved[5];              //!< For the future usage
  hsa_kernel_dispatch_packet_t aql;  //!< [LWO/SRO] AQL packet – 64 bytes AQL packet
};

struct AmdEvent {
  uint32_t state;        //!< [LRO/SRW] Event state: START, END, COMPLETE
  uint32_t counter;      //!< [LRW] Event retain/release counter. 0 means the event is free
  uint64_t timer[3];     //!< [LRO/SWO] Timer values for profiling for each state
  uint64_t captureInfo;  //!< [LRW/SRO] Profiling capture info for CLK_PROFILING_COMMAND_EXEC_TIME
};

struct SchedulerParam {
  uint32_t signal;          //!< Signal to stop the child queue(address must be 16 bytes aligned)
  uint32_t eng_clk;         //!< Engine clock in Mhz
  uint64_t hw_queue;        //!< Address to HW queue
  uint64_t hsa_queue;       //!< Address to HSA dummy queue
  uint32_t useATC;          //!< GPU access to shader program by ATC.
  uint32_t scratchSize;     //!< Scratch buffer size
  uint64_t scratch;         //!< GPU address to the scratch buffer
  uint32_t numMaxWaves;     //!< The max number of possible waves
  uint32_t releaseHostCP;   //!< Releases CP on the host queue
  uint64_t parentAQL;       //!< Host parent AmdAqlWrap packet
  uint32_t dedicatedQueue;  //!< Scheduler uses a dedicated queue
  uint32_t scratchOffset;   //!< Scratch buffer offset
  uint32_t reserved[2];     //!< Reserved
};

}  // namespace gpu

#endif