/*
 * Copyright 2020 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
#include "amdgpu.h"
#include "amdgpu_amdkfd.h"
#include "amdgpu_amdkfd_arcturus.h"
#include "amdgpu_amdkfd_gfx_v9.h"
#include "amdgpu_amdkfd_aldebaran.h"
#include "gc/gc_9_4_2_offset.h"
#include "gc/gc_9_4_2_sh_mask.h"
#include <uapi/linux/kfd_ioctl.h>

/*
 * Returns TRAP_EN, EXCP_EN and EXCP_REPLACE.
 *
 * restore_dbg_registers is ignored here but is a general interface requirement
 * for devices that support GFXOFF and where the RLC save/restore list
 * does not support hw registers for debugging i.e. the driver has to manually
 * initialize the debug mode registers after it has disabled GFX off during the
 * debug session.
 */
uint32_t kgd_aldebaran_enable_debug_trap(struct amdgpu_device *adev,
					    bool restore_dbg_registers,
					    uint32_t vmid)
{
	uint32_t data = 0;

	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, TRAP_EN, 1);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_EN, 0);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_REPLACE, 0);

	return data;
}

/* returns TRAP_EN, EXCP_EN and EXCP_REPLACE. */
static uint32_t kgd_aldebaran_disable_debug_trap(struct amdgpu_device *adev,
						bool keep_trap_enabled,
						uint32_t vmid)
{
	uint32_t data = 0;

	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, TRAP_EN, keep_trap_enabled);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_EN, 0);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_REPLACE, 0);

	return data;
}

static int kgd_aldebaran_validate_trap_override_request(struct amdgpu_device *adev,
							uint32_t trap_override,
							uint32_t *trap_mask_supported)
{
	*trap_mask_supported &= KFD_DBG_TRAP_MASK_FP_INVALID |
				KFD_DBG_TRAP_MASK_FP_INPUT_DENORMAL |
				KFD_DBG_TRAP_MASK_FP_DIVIDE_BY_ZERO |
				KFD_DBG_TRAP_MASK_FP_OVERFLOW |
				KFD_DBG_TRAP_MASK_FP_UNDERFLOW |
				KFD_DBG_TRAP_MASK_FP_INEXACT |
				KFD_DBG_TRAP_MASK_INT_DIVIDE_BY_ZERO |
				KFD_DBG_TRAP_MASK_DBG_ADDRESS_WATCH |
				KFD_DBG_TRAP_MASK_DBG_MEMORY_VIOLATION;

	if (trap_override != KFD_DBG_TRAP_OVERRIDE_OR &&
			trap_override != KFD_DBG_TRAP_OVERRIDE_REPLACE)
		return -EPERM;

	return 0;
}

/* returns TRAP_EN, EXCP_EN and EXCP_RPLACE. */
static uint32_t kgd_aldebaran_set_wave_launch_trap_override(struct amdgpu_device *adev,
					uint32_t vmid,
					uint32_t trap_override,
					uint32_t trap_mask_bits,
					uint32_t trap_mask_request,
					uint32_t *trap_mask_prev,
					uint32_t kfd_dbg_trap_cntl_prev)

{
	uint32_t data = 0;

	*trap_mask_prev = REG_GET_FIELD(kfd_dbg_trap_cntl_prev, SPI_GDBG_PER_VMID_CNTL, EXCP_EN);
	trap_mask_bits = (trap_mask_bits & trap_mask_request) |
		(*trap_mask_prev & ~trap_mask_request);

	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, TRAP_EN, 1);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_EN, trap_mask_bits);
	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, EXCP_REPLACE, trap_override);

	return data;
}

uint32_t kgd_aldebaran_set_wave_launch_mode(struct amdgpu_device *adev,
					uint8_t wave_launch_mode,
					uint32_t vmid)
{
	uint32_t data = 0;

	data = REG_SET_FIELD(data, SPI_GDBG_PER_VMID_CNTL, LAUNCH_MODE, wave_launch_mode);

	return data;
}

#define TCP_WATCH_STRIDE (regTCP_WATCH1_ADDR_H - regTCP_WATCH0_ADDR_H)
static uint32_t kgd_gfx_aldebaran_set_address_watch(
					struct amdgpu_device *adev,
					uint64_t watch_address,
					uint32_t watch_address_mask,
					uint32_t watch_id,
					uint32_t watch_mode,
					uint32_t debug_vmid,
					uint32_t inst)
{
	uint32_t watch_address_high;
	uint32_t watch_address_low;
	uint32_t watch_address_cntl;

	watch_address_cntl = 0;
	watch_address_low = lower_32_bits(watch_address);
	watch_address_high = upper_32_bits(watch_address) & 0xffff;

	watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
			TCP_WATCH0_CNTL,
			MODE,
			watch_mode);

	watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
			TCP_WATCH0_CNTL,
			MASK,
			watch_address_mask >> 6);

	watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
			TCP_WATCH0_CNTL,
			VALID,
			1);

	WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_H) +
			(watch_id * TCP_WATCH_STRIDE)),
			watch_address_high);

	WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_L) +
			(watch_id * TCP_WATCH_STRIDE)),
			watch_address_low);

	return watch_address_cntl;
}

const struct kfd2kgd_calls aldebaran_kfd2kgd = {
	.program_sh_mem_settings = kgd_gfx_v9_program_sh_mem_settings,
	.set_pasid_vmid_mapping = kgd_gfx_v9_set_pasid_vmid_mapping,
	.init_interrupts = kgd_gfx_v9_init_interrupts,
	.hqd_load = kgd_gfx_v9_hqd_load,
	.hiq_mqd_load = kgd_gfx_v9_hiq_mqd_load,
	.hqd_sdma_load = kgd_arcturus_hqd_sdma_load,
	.hqd_dump = kgd_gfx_v9_hqd_dump,
	.hqd_sdma_dump = kgd_arcturus_hqd_sdma_dump,
	.hqd_is_occupied = kgd_gfx_v9_hqd_is_occupied,
	.hqd_sdma_is_occupied = kgd_arcturus_hqd_sdma_is_occupied,
	.hqd_destroy = kgd_gfx_v9_hqd_destroy,
	.hqd_sdma_destroy = kgd_arcturus_hqd_sdma_destroy,
	.wave_control_execute = kgd_gfx_v9_wave_control_execute,
	.get_atc_vmid_pasid_mapping_info =
				kgd_gfx_v9_get_atc_vmid_pasid_mapping_info,
	.set_vm_context_page_table_base = kgd_gfx_v9_set_vm_context_page_table_base,
	.get_cu_occupancy = kgd_gfx_v9_get_cu_occupancy,
	.enable_debug_trap = kgd_aldebaran_enable_debug_trap,
	.disable_debug_trap = kgd_aldebaran_disable_debug_trap,
	.validate_trap_override_request = kgd_aldebaran_validate_trap_override_request,
	.set_wave_launch_trap_override = kgd_aldebaran_set_wave_launch_trap_override,
	.set_wave_launch_mode = kgd_aldebaran_set_wave_launch_mode,
	.set_address_watch = kgd_gfx_aldebaran_set_address_watch,
	.clear_address_watch = kgd_gfx_v9_clear_address_watch,
	.get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
	.build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
	.program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,
}