amdgpu_defines.hh

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/*
 * Copyright (c) 2021 Advanced Micro Devices, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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#ifndef __DEV_AMDGPU_AMDGPU_DEFINES_HH__
#define __DEV_AMDGPU_AMDGPU_DEFINES_HH__
 
#include "base/types.hh"
 
namespace gem5
{
 
/* Types of queues supported by device */
enum QueueType
{
    Compute,
    Gfx,
    SDMAGfx,
    SDMAPage,
    ComputeAQL,
    InterruptHandler,
    RLC
};
 
/*
 * Hold information about doorbells including queue type and the IP
 * block ID if the IP can have multiple instances.
 */
typedef struct
{
    QueueType qtype;
    int ip_id;
} DoorbellInfo;
 
// AMD GPUs support 16 different virtual address spaces
static constexpr int AMDGPU_VM_COUNT = 16;
 
/* Names of BARs used by the device. */
constexpr int FRAMEBUFFER_BAR = 0;
constexpr int DOORBELL_BAR = 2;
constexpr int MMIO_BAR = 5;
 
/* By default the X86 kernel expects the vga ROM at 0xc0000. */
constexpr uint32_t VGA_ROM_DEFAULT = 0xc0000;
constexpr uint32_t ROM_SIZE = 0x20000;        // 128kB
 
/* Most MMIOs use DWORD addresses and thus need to be shifted. */
static constexpr uint32_t IH_OFFSET_SHIFT = 2;
static constexpr uint32_t GRBM_OFFSET_SHIFT  = 2;
static constexpr uint32_t MMHUB_OFFSET_SHIFT = 2;
 
} // namespace gem5
 
#endif // __DEV_AMDGPU_AMDGPU_DEFINES_HH__