rocm-systems/rocclr/runtime/device/gpu/gpusched.hpp

//
// 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 reserved0;         //!< For the future usage
    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    reserved;       //!< Reserved
    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
};

} // namespace gpu

#endif