linux_kernel/drivers/gpu/drm/amd/amdgpu/vi.c

/*
 * Copyright 2014 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 <linux/firmware.h>
#include <linux/slab.h>
#include <linux/module.h>
#include "drmP.h"
#include "amdgpu.h"
#include "amdgpu_atombios.h"
#include "amdgpu_ih.h"
#include "amdgpu_uvd.h"
#include "amdgpu_vce.h"
#include "amdgpu_ucode.h"
#include "atom.h"

#include "gmc/gmc_8_1_d.h"
#include "gmc/gmc_8_1_sh_mask.h"

#include "oss/oss_3_0_d.h"
#include "oss/oss_3_0_sh_mask.h"

#include "bif/bif_5_0_d.h"
#include "bif/bif_5_0_sh_mask.h"

#include "gca/gfx_8_0_d.h"
#include "gca/gfx_8_0_sh_mask.h"

#include "smu/smu_7_1_1_d.h"
#include "smu/smu_7_1_1_sh_mask.h"

#include "uvd/uvd_5_0_d.h"
#include "uvd/uvd_5_0_sh_mask.h"

#include "vce/vce_3_0_d.h"
#include "vce/vce_3_0_sh_mask.h"

#include "dce/dce_10_0_d.h"
#include "dce/dce_10_0_sh_mask.h"

#include "vid.h"
#include "vi.h"
#include "vi_dpm.h"
#include "gmc_v8_0.h"
#include "gfx_v8_0.h"
#include "sdma_v2_4.h"
#include "sdma_v3_0.h"
#include "dce_v10_0.h"
#include "dce_v11_0.h"
#include "iceland_ih.h"
#include "tonga_ih.h"
#include "cz_ih.h"
#include "uvd_v5_0.h"
#include "uvd_v6_0.h"
#include "vce_v3_0.h"

/*
 * Indirect registers accessor
 */
static u32 vi_pcie_rreg(struct amdgpu_device *adev, u32 reg)
{
	unsigned long flags;
	u32 r;

	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
	WREG32(mmPCIE_INDEX, reg);
	(void)RREG32(mmPCIE_INDEX);
	r = RREG32(mmPCIE_DATA);
	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
	return r;
}

static void vi_pcie_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
{
	unsigned long flags;

	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
	WREG32(mmPCIE_INDEX, reg);
	(void)RREG32(mmPCIE_INDEX);
	WREG32(mmPCIE_DATA, v);
	(void)RREG32(mmPCIE_DATA);
	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}

static u32 vi_smc_rreg(struct amdgpu_device *adev, u32 reg)
{
	unsigned long flags;
	u32 r;

	spin_lock_irqsave(&adev->smc_idx_lock, flags);
	WREG32(mmSMC_IND_INDEX_0, (reg));
	r = RREG32(mmSMC_IND_DATA_0);
	spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
	return r;
}

static void vi_smc_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
{
	unsigned long flags;

	spin_lock_irqsave(&adev->smc_idx_lock, flags);
	WREG32(mmSMC_IND_INDEX_0, (reg));
	WREG32(mmSMC_IND_DATA_0, (v));
	spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
}

static u32 vi_uvd_ctx_rreg(struct amdgpu_device *adev, u32 reg)
{
	unsigned long flags;
	u32 r;

	spin_lock_irqsave(&adev->uvd_ctx_idx_lock, flags);
	WREG32(mmUVD_CTX_INDEX, ((reg) & 0x1ff));
	r = RREG32(mmUVD_CTX_DATA);
	spin_unlock_irqrestore(&adev->uvd_ctx_idx_lock, flags);
	return r;
}

static void vi_uvd_ctx_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
{
	unsigned long flags;

	spin_lock_irqsave(&adev->uvd_ctx_idx_lock, flags);
	WREG32(mmUVD_CTX_INDEX, ((reg) & 0x1ff));
	WREG32(mmUVD_CTX_DATA, (v));
	spin_unlock_irqrestore(&adev->uvd_ctx_idx_lock, flags);
}

static u32 vi_didt_rreg(struct amdgpu_device *adev, u32 reg)
{
	unsigned long flags;
	u32 r;

	spin_lock_irqsave(&adev->didt_idx_lock, flags);
	WREG32(mmDIDT_IND_INDEX, (reg));
	r = RREG32(mmDIDT_IND_DATA);
	spin_unlock_irqrestore(&adev->didt_idx_lock, flags);
	return r;
}

static void vi_didt_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
{
	unsigned long flags;

	spin_lock_irqsave(&adev->didt_idx_lock, flags);
	WREG32(mmDIDT_IND_INDEX, (reg));
	WREG32(mmDIDT_IND_DATA, (v));
	spin_unlock_irqrestore(&adev->didt_idx_lock, flags);
}

static const u32 tonga_mgcg_cgcg_init[] =
{
	mmCGTT_DRM_CLK_CTRL0, 0xffffffff, 0x00600100,
	mmPCIE_INDEX, 0xffffffff, 0x0140001c,
	mmPCIE_DATA, 0x000f0000, 0x00000000,
	mmSMC_IND_INDEX_4, 0xffffffff, 0xC060000C,
	mmSMC_IND_DATA_4, 0xc0000fff, 0x00000100,
	mmXDMA_CLOCK_GATING_CNTL, 0xffffffff, 0x00000100,
	mmXDMA_MEM_POWER_CNTL, 0x00000101, 0x00000000,
	mmCGTT_DRM_CLK_CTRL0, 0xff000fff, 0x00000100,
	mmHDP_XDP_CGTT_BLK_CTRL, 0xc0000fff, 0x00000104,
};

static const u32 iceland_mgcg_cgcg_init[] =
{
	mmPCIE_INDEX, 0xffffffff, ixPCIE_CNTL2,
	mmPCIE_DATA, 0x000f0000, 0x00000000,
	mmSMC_IND_INDEX_4, 0xffffffff, ixCGTT_ROM_CLK_CTRL0,
	mmSMC_IND_DATA_4, 0xc0000fff, 0x00000100,
	mmHDP_XDP_CGTT_BLK_CTRL, 0xc0000fff, 0x00000104,
};

static const u32 cz_mgcg_cgcg_init[] =
{
	mmCGTT_DRM_CLK_CTRL0, 0xffffffff, 0x00600100,
	mmPCIE_INDEX, 0xffffffff, 0x0140001c,
	mmPCIE_DATA, 0x000f0000, 0x00000000,
	mmXDMA_CLOCK_GATING_CNTL, 0xffffffff, 0x00000100,
	mmXDMA_MEM_POWER_CNTL, 0x00000101, 0x00000000,
	mmCGTT_DRM_CLK_CTRL0, 0xff000fff, 0x00000100,
	mmHDP_XDP_CGTT_BLK_CTRL, 0xc0000fff, 0x00000104,
};

static void vi_init_golden_registers(struct amdgpu_device *adev)
{
	/* Some of the registers might be dependent on GRBM_GFX_INDEX */
	mutex_lock(&adev->grbm_idx_mutex);

	switch (adev->asic_type) {
	case CHIP_TOPAZ:
		amdgpu_program_register_sequence(adev,
						 iceland_mgcg_cgcg_init,
						 (const u32)ARRAY_SIZE(iceland_mgcg_cgcg_init));
		break;
	case CHIP_TONGA:
		amdgpu_program_register_sequence(adev,
						 tonga_mgcg_cgcg_init,
						 (const u32)ARRAY_SIZE(tonga_mgcg_cgcg_init));
		break;
	case CHIP_CARRIZO:
		amdgpu_program_register_sequence(adev,
						 cz_mgcg_cgcg_init,
						 (const u32)ARRAY_SIZE(cz_mgcg_cgcg_init));
		break;
	default:
		break;
	}
	mutex_unlock(&adev->grbm_idx_mutex);
}

/**
 * vi_get_xclk - get the xclk
 *
 * @adev: amdgpu_device pointer
 *
 * Returns the reference clock used by the gfx engine
 * (VI).
 */
static u32 vi_get_xclk(struct amdgpu_device *adev)
{
	u32 reference_clock = adev->clock.spll.reference_freq;
	u32 tmp;

	if (adev->flags & AMDGPU_IS_APU)
		return reference_clock;

	tmp = RREG32_SMC(ixCG_CLKPIN_CNTL_2);
	if (REG_GET_FIELD(tmp, CG_CLKPIN_CNTL_2, MUX_TCLK_TO_XCLK))
		return 1000;

	tmp = RREG32_SMC(ixCG_CLKPIN_CNTL);
	if (REG_GET_FIELD(tmp, CG_CLKPIN_CNTL, XTALIN_DIVIDE))
		return reference_clock / 4;

	return reference_clock;
}

/**
 * vi_srbm_select - select specific register instances
 *
 * @adev: amdgpu_device pointer
 * @me: selected ME (micro engine)
 * @pipe: pipe
 * @queue: queue
 * @vmid: VMID
 *
 * Switches the currently active registers instances.  Some
 * registers are instanced per VMID, others are instanced per
 * me/pipe/queue combination.
 */
void vi_srbm_select(struct amdgpu_device *adev,
		     u32 me, u32 pipe, u32 queue, u32 vmid)
{
	u32 srbm_gfx_cntl = 0;
	srbm_gfx_cntl = REG_SET_FIELD(srbm_gfx_cntl, SRBM_GFX_CNTL, PIPEID, pipe);
	srbm_gfx_cntl = REG_SET_FIELD(srbm_gfx_cntl, SRBM_GFX_CNTL, MEID, me);
	srbm_gfx_cntl = REG_SET_FIELD(srbm_gfx_cntl, SRBM_GFX_CNTL, VMID, vmid);
	srbm_gfx_cntl = REG_SET_FIELD(srbm_gfx_cntl, SRBM_GFX_CNTL, QUEUEID, queue);
	WREG32(mmSRBM_GFX_CNTL, srbm_gfx_cntl);
}

static void vi_vga_set_state(struct amdgpu_device *adev, bool state)
{
	/* todo */
}

static bool vi_read_disabled_bios(struct amdgpu_device *adev)
{
	u32 bus_cntl;
	u32 d1vga_control = 0;
	u32 d2vga_control = 0;
	u32 vga_render_control = 0;
	u32 rom_cntl;
	bool r;

	bus_cntl = RREG32(mmBUS_CNTL);
	if (adev->mode_info.num_crtc) {
		d1vga_control = RREG32(mmD1VGA_CONTROL);
		d2vga_control = RREG32(mmD2VGA_CONTROL);
		vga_render_control = RREG32(mmVGA_RENDER_CONTROL);
	}
	rom_cntl = RREG32_SMC(ixROM_CNTL);

	/* enable the rom */
	WREG32(mmBUS_CNTL, (bus_cntl & ~BUS_CNTL__BIOS_ROM_DIS_MASK));
	if (adev->mode_info.num_crtc) {
		/* Disable VGA mode */
		WREG32(mmD1VGA_CONTROL,
		       (d1vga_control & ~(D1VGA_CONTROL__D1VGA_MODE_ENABLE_MASK |
					  D1VGA_CONTROL__D1VGA_TIMING_SELECT_MASK)));
		WREG32(mmD2VGA_CONTROL,
		       (d2vga_control & ~(D2VGA_CONTROL__D2VGA_MODE_ENABLE_MASK |
					  D2VGA_CONTROL__D2VGA_TIMING_SELECT_MASK)));
		WREG32(mmVGA_RENDER_CONTROL,
		       (vga_render_control & ~VGA_RENDER_CONTROL__VGA_VSTATUS_CNTL_MASK));
	}
	WREG32_SMC(ixROM_CNTL, rom_cntl | ROM_CNTL__SCK_OVERWRITE_MASK);

	r = amdgpu_read_bios(adev);

	/* restore regs */
	WREG32(mmBUS_CNTL, bus_cntl);
	if (adev->mode_info.num_crtc) {
		WREG32(mmD1VGA_CONTROL, d1vga_control);
		WREG32(mmD2VGA_CONTROL, d2vga_control);
		WREG32(mmVGA_RENDER_CONTROL, vga_render_control);
	}
	WREG32_SMC(ixROM_CNTL, rom_cntl);
	return r;
}
static struct amdgpu_allowed_register_entry tonga_allowed_read_registers[] = {
	{mmGB_MACROTILE_MODE7, true},
};

static struct amdgpu_allowed_register_entry cz_allowed_read_registers[] = {
	{mmGB_TILE_MODE7, true},
	{mmGB_TILE_MODE12, true},
	{mmGB_TILE_MODE17, true},
	{mmGB_TILE_MODE23, true},
	{mmGB_MACROTILE_MODE7, true},
};

static struct amdgpu_allowed_register_entry vi_allowed_read_registers[] = {
	{mmGRBM_STATUS, false},
	{mmGB_ADDR_CONFIG, false},
	{mmMC_ARB_RAMCFG, false},
	{mmGB_TILE_MODE0, false},
	{mmGB_TILE_MODE1, false},
	{mmGB_TILE_MODE2, false},
	{mmGB_TILE_MODE3, false},
	{mmGB_TILE_MODE4, false},
	{mmGB_TILE_MODE5, false},
	{mmGB_TILE_MODE6, false},
	{mmGB_TILE_MODE7, false},
	{mmGB_TILE_MODE8, false},
	{mmGB_TILE_MODE9, false},
	{mmGB_TILE_MODE10, false},
	{mmGB_TILE_MODE11, false},
	{mmGB_TILE_MODE12, false},
	{mmGB_TILE_MODE13, false},
	{mmGB_TILE_MODE14, false},
	{mmGB_TILE_MODE15, false},
	{mmGB_TILE_MODE16, false},
	{mmGB_TILE_MODE17, false},
	{mmGB_TILE_MODE18, false},
	{mmGB_TILE_MODE19, false},
	{mmGB_TILE_MODE20, false},
	{mmGB_TILE_MODE21, false},
	{mmGB_TILE_MODE22, false},
	{mmGB_TILE_MODE23, false},
	{mmGB_TILE_MODE24, false},
	{mmGB_TILE_MODE25, false},
	{mmGB_TILE_MODE26, false},
	{mmGB_TILE_MODE27, false},
	{mmGB_TILE_MODE28, false},
	{mmGB_TILE_MODE29, false},
	{mmGB_TILE_MODE30, false},
	{mmGB_TILE_MODE31, false},
	{mmGB_MACROTILE_MODE0, false},
	{mmGB_MACROTILE_MODE1, false},
	{mmGB_MACROTILE_MODE2, false},
	{mmGB_MACROTILE_MODE3, false},
	{mmGB_MACROTILE_MODE4, false},
	{mmGB_MACROTILE_MODE5, false},
	{mmGB_MACROTILE_MODE6, false},
	{mmGB_MACROTILE_MODE7, false},
	{mmGB_MACROTILE_MODE8, false},
	{mmGB_MACROTILE_MODE9, false},
	{mmGB_MACROTILE_MODE10, false},
	{mmGB_MACROTILE_MODE11, false},
	{mmGB_MACROTILE_MODE12, false},
	{mmGB_MACROTILE_MODE13, false},
	{mmGB_MACROTILE_MODE14, false},
	{mmGB_MACROTILE_MODE15, false},
	{mmCC_RB_BACKEND_DISABLE, false, true},
	{mmGC_USER_RB_BACKEND_DISABLE, false, true},
	{mmGB_BACKEND_MAP, false, false},
	{mmPA_SC_RASTER_CONFIG, false, true},
	{mmPA_SC_RASTER_CONFIG_1, false, true},
};

static uint32_t vi_read_indexed_register(struct amdgpu_device *adev, u32 se_num,
					 u32 sh_num, u32 reg_offset)
{
	uint32_t val;

	mutex_lock(&adev->grbm_idx_mutex);
	if (se_num != 0xffffffff || sh_num != 0xffffffff)
		gfx_v8_0_select_se_sh(adev, se_num, sh_num);

	val = RREG32(reg_offset);

	if (se_num != 0xffffffff || sh_num != 0xffffffff)
		gfx_v8_0_select_se_sh(adev, 0xffffffff, 0xffffffff);
	mutex_unlock(&adev->grbm_idx_mutex);
	return val;
}

static int vi_read_register(struct amdgpu_device *adev, u32 se_num,
			    u32 sh_num, u32 reg_offset, u32 *value)
{
	struct amdgpu_allowed_register_entry *asic_register_table = NULL;
	struct amdgpu_allowed_register_entry *asic_register_entry;
	uint32_t size, i;

	*value = 0;
	switch (adev->asic_type) {
	case CHIP_TOPAZ:
		asic_register_table = tonga_allowed_read_registers;
		size = ARRAY_SIZE(tonga_allowed_read_registers);
		break;
	case CHIP_TONGA:
	case CHIP_CARRIZO:
		asic_register_table = cz_allowed_read_registers;
		size = ARRAY_SIZE(cz_allowed_read_registers);
		break;
	default:
		return -EINVAL;
	}

	if (asic_register_table) {
		for (i = 0; i < size; i++) {
			asic_register_entry = asic_register_table + i;
			if (reg_offset != asic_register_entry->reg_offset)
				continue;
			if (!asic_register_entry->untouched)
				*value = asic_register_entry->grbm_indexed ?
					vi_read_indexed_register(adev, se_num,
								 sh_num, reg_offset) :
					RREG32(reg_offset);
			return 0;
		}
	}

	for (i = 0; i < ARRAY_SIZE(vi_allowed_read_registers); i++) {
		if (reg_offset != vi_allowed_read_registers[i].reg_offset)
			continue;

		if (!vi_allowed_read_registers[i].untouched)
			*value = vi_allowed_read_registers[i].grbm_indexed ?
				vi_read_indexed_register(adev, se_num,
							 sh_num, reg_offset) :
				RREG32(reg_offset);
		return 0;
	}
	return -EINVAL;
}

static void vi_print_gpu_status_regs(struct amdgpu_device *adev)
{
	dev_info(adev->dev, "  GRBM_STATUS=0x%08X\n",
		RREG32(mmGRBM_STATUS));
	dev_info(adev->dev, "  GRBM_STATUS2=0x%08X\n",
		RREG32(mmGRBM_STATUS2));
	dev_info(adev->dev, "  GRBM_STATUS_SE0=0x%08X\n",
		RREG32(mmGRBM_STATUS_SE0));
	dev_info(adev->dev, "  GRBM_STATUS_SE1=0x%08X\n",
		RREG32(mmGRBM_STATUS_SE1));
	dev_info(adev->dev, "  GRBM_STATUS_SE2=0x%08X\n",
		RREG32(mmGRBM_STATUS_SE2));
	dev_info(adev->dev, "  GRBM_STATUS_SE3=0x%08X\n",
		RREG32(mmGRBM_STATUS_SE3));
	dev_info(adev->dev, "  SRBM_STATUS=0x%08X\n",
		RREG32(mmSRBM_STATUS));
	dev_info(adev->dev, "  SRBM_STATUS2=0x%08X\n",
		RREG32(mmSRBM_STATUS2));
	dev_info(adev->dev, "  SDMA0_STATUS_REG   = 0x%08X\n",
		RREG32(mmSDMA0_STATUS_REG + SDMA0_REGISTER_OFFSET));
	dev_info(adev->dev, "  SDMA1_STATUS_REG   = 0x%08X\n",
		 RREG32(mmSDMA0_STATUS_REG + SDMA1_REGISTER_OFFSET));
	dev_info(adev->dev, "  CP_STAT = 0x%08x\n", RREG32(mmCP_STAT));
	dev_info(adev->dev, "  CP_STALLED_STAT1 = 0x%08x\n",
		 RREG32(mmCP_STALLED_STAT1));
	dev_info(adev->dev, "  CP_STALLED_STAT2 = 0x%08x\n",
		 RREG32(mmCP_STALLED_STAT2));
	dev_info(adev->dev, "  CP_STALLED_STAT3 = 0x%08x\n",
		 RREG32(mmCP_STALLED_STAT3));
	dev_info(adev->dev, "  CP_CPF_BUSY_STAT = 0x%08x\n",
		 RREG32(mmCP_CPF_BUSY_STAT));
	dev_info(adev->dev, "  CP_CPF_STALLED_STAT1 = 0x%08x\n",
		 RREG32(mmCP_CPF_STALLED_STAT1));
	dev_info(adev->dev, "  CP_CPF_STATUS = 0x%08x\n", RREG32(mmCP_CPF_STATUS));
	dev_info(adev->dev, "  CP_CPC_BUSY_STAT = 0x%08x\n", RREG32(mmCP_CPC_BUSY_STAT));
	dev_info(adev->dev, "  CP_CPC_STALLED_STAT1 = 0x%08x\n",
		 RREG32(mmCP_CPC_STALLED_STAT1));
	dev_info(adev->dev, "  CP_CPC_STATUS = 0x%08x\n", RREG32(mmCP_CPC_STATUS));
}

/**
 * vi_gpu_check_soft_reset - check which blocks are busy
 *
 * @adev: amdgpu_device pointer
 *
 * Check which blocks are busy and return the relevant reset
 * mask to be used by vi_gpu_soft_reset().
 * Returns a mask of the blocks to be reset.
 */
u32 vi_gpu_check_soft_reset(struct amdgpu_device *adev)
{
	u32 reset_mask = 0;
	u32 tmp;

	/* GRBM_STATUS */
	tmp = RREG32(mmGRBM_STATUS);
	if (tmp & (GRBM_STATUS__PA_BUSY_MASK | GRBM_STATUS__SC_BUSY_MASK |
		   GRBM_STATUS__BCI_BUSY_MASK | GRBM_STATUS__SX_BUSY_MASK |
		   GRBM_STATUS__TA_BUSY_MASK | GRBM_STATUS__VGT_BUSY_MASK |
		   GRBM_STATUS__DB_BUSY_MASK | GRBM_STATUS__CB_BUSY_MASK |
		   GRBM_STATUS__GDS_BUSY_MASK | GRBM_STATUS__SPI_BUSY_MASK |
		   GRBM_STATUS__IA_BUSY_MASK | GRBM_STATUS__IA_BUSY_NO_DMA_MASK))
		reset_mask |= AMDGPU_RESET_GFX;

	if (tmp & (GRBM_STATUS__CP_BUSY_MASK | GRBM_STATUS__CP_COHERENCY_BUSY_MASK))
		reset_mask |= AMDGPU_RESET_CP;

	/* GRBM_STATUS2 */
	tmp = RREG32(mmGRBM_STATUS2);
	if (tmp & GRBM_STATUS2__RLC_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_RLC;

	if (tmp & (GRBM_STATUS2__CPF_BUSY_MASK |
		   GRBM_STATUS2__CPC_BUSY_MASK |
		   GRBM_STATUS2__CPG_BUSY_MASK))
		reset_mask |= AMDGPU_RESET_CP;

	/* SRBM_STATUS2 */
	tmp = RREG32(mmSRBM_STATUS2);
	if (tmp & SRBM_STATUS2__SDMA_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_DMA;

	if (tmp & SRBM_STATUS2__SDMA1_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_DMA1;

	/* SRBM_STATUS */
	tmp = RREG32(mmSRBM_STATUS);

	if (tmp & SRBM_STATUS__IH_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_IH;

	if (tmp & SRBM_STATUS__SEM_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_SEM;

	if (tmp & SRBM_STATUS__GRBM_RQ_PENDING_MASK)
		reset_mask |= AMDGPU_RESET_GRBM;

	if (adev->asic_type != CHIP_TOPAZ) {
		if (tmp & (SRBM_STATUS__UVD_RQ_PENDING_MASK |
			   SRBM_STATUS__UVD_BUSY_MASK))
			reset_mask |= AMDGPU_RESET_UVD;
	}

	if (tmp & SRBM_STATUS__VMC_BUSY_MASK)
		reset_mask |= AMDGPU_RESET_VMC;

	if (tmp & (SRBM_STATUS__MCB_BUSY_MASK | SRBM_STATUS__MCB_NON_DISPLAY_BUSY_MASK |
		   SRBM_STATUS__MCC_BUSY_MASK | SRBM_STATUS__MCD_BUSY_MASK))
		reset_mask |= AMDGPU_RESET_MC;

	/* SDMA0_STATUS_REG */
	tmp = RREG32(mmSDMA0_STATUS_REG + SDMA0_REGISTER_OFFSET);
	if (!(tmp & SDMA0_STATUS_REG__IDLE_MASK))
		reset_mask |= AMDGPU_RESET_DMA;

	/* SDMA1_STATUS_REG */
	tmp = RREG32(mmSDMA0_STATUS_REG + SDMA1_REGISTER_OFFSET);
	if (!(tmp & SDMA0_STATUS_REG__IDLE_MASK))
		reset_mask |= AMDGPU_RESET_DMA1;
#if 0
	/* VCE_STATUS */
	if (adev->asic_type != CHIP_TOPAZ) {
		tmp = RREG32(mmVCE_STATUS);
		if (tmp & VCE_STATUS__VCPU_REPORT_RB0_BUSY_MASK)
			reset_mask |= AMDGPU_RESET_VCE;
		if (tmp & VCE_STATUS__VCPU_REPORT_RB1_BUSY_MASK)
			reset_mask |= AMDGPU_RESET_VCE1;

	}

	if (adev->asic_type != CHIP_TOPAZ) {
		if (amdgpu_display_is_display_hung(adev))
			reset_mask |= AMDGPU_RESET_DISPLAY;
	}
#endif

	/* Skip MC reset as it's mostly likely not hung, just busy */
	if (reset_mask & AMDGPU_RESET_MC) {
		DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask);
		reset_mask &= ~AMDGPU_RESET_MC;
	}

	return reset_mask;
}

/**
 * vi_gpu_soft_reset - soft reset GPU
 *
 * @adev: amdgpu_device pointer
 * @reset_mask: mask of which blocks to reset
 *
 * Soft reset the blocks specified in @reset_mask.
 */
static void vi_gpu_soft_reset(struct amdgpu_device *adev, u32 reset_mask)
{
	struct amdgpu_mode_mc_save save;
	u32 grbm_soft_reset = 0, srbm_soft_reset = 0;
	u32 tmp;

	if (reset_mask == 0)
		return;

	dev_info(adev->dev, "GPU softreset: 0x%08X\n", reset_mask);

	vi_print_gpu_status_regs(adev);
	dev_info(adev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x%08X\n",
		 RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_ADDR));
	dev_info(adev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
		 RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS));

	/* disable CG/PG */

	/* stop the rlc */
	//XXX
	//gfx_v8_0_rlc_stop(adev);

	/* Disable GFX parsing/prefetching */
	tmp = RREG32(mmCP_ME_CNTL);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, ME_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, PFP_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, CE_HALT, 1);
	WREG32(mmCP_ME_CNTL, tmp);

	/* Disable MEC parsing/prefetching */
	tmp = RREG32(mmCP_MEC_CNTL);
	tmp = REG_SET_FIELD(tmp, CP_MEC_CNTL, MEC_ME1_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_MEC_CNTL, MEC_ME2_HALT, 1);
	WREG32(mmCP_MEC_CNTL, tmp);

	if (reset_mask & AMDGPU_RESET_DMA) {
		/* sdma0 */
		tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
		tmp = REG_SET_FIELD(tmp, SDMA0_F32_CNTL, HALT, 1);
		WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);
	}
	if (reset_mask & AMDGPU_RESET_DMA1) {
		/* sdma1 */
		tmp = RREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET);
		tmp = REG_SET_FIELD(tmp, SDMA0_F32_CNTL, HALT, 1);
		WREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET, tmp);
	}

	gmc_v8_0_mc_stop(adev, &save);
	if (amdgpu_asic_wait_for_mc_idle(adev)) {
		dev_warn(adev->dev, "Wait for MC idle timedout !\n");
	}

	if (reset_mask & (AMDGPU_RESET_GFX | AMDGPU_RESET_COMPUTE | AMDGPU_RESET_CP)) {
		grbm_soft_reset =
			REG_SET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CP, 1);
		grbm_soft_reset =
			REG_SET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_GFX, 1);
	}

	if (reset_mask & AMDGPU_RESET_CP) {
		grbm_soft_reset =
			REG_SET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_CP, 1);
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_GRBM, 1);
	}

	if (reset_mask & AMDGPU_RESET_DMA)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_SDMA, 1);

	if (reset_mask & AMDGPU_RESET_DMA1)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_SDMA1, 1);

	if (reset_mask & AMDGPU_RESET_DISPLAY)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_DC, 1);

	if (reset_mask & AMDGPU_RESET_RLC)
		grbm_soft_reset =
			REG_SET_FIELD(grbm_soft_reset, GRBM_SOFT_RESET, SOFT_RESET_RLC, 1);

	if (reset_mask & AMDGPU_RESET_SEM)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_SEM, 1);

	if (reset_mask & AMDGPU_RESET_IH)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_IH, 1);

	if (reset_mask & AMDGPU_RESET_GRBM)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_GRBM, 1);

	if (reset_mask & AMDGPU_RESET_VMC)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_VMC, 1);

	if (reset_mask & AMDGPU_RESET_UVD)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_UVD, 1);

	if (reset_mask & AMDGPU_RESET_VCE)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_VCE0, 1);

	if (reset_mask & AMDGPU_RESET_VCE)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_VCE1, 1);

	if (!(adev->flags & AMDGPU_IS_APU)) {
		if (reset_mask & AMDGPU_RESET_MC)
		srbm_soft_reset =
			REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, SOFT_RESET_MC, 1);
	}

	if (grbm_soft_reset) {
		tmp = RREG32(mmGRBM_SOFT_RESET);
		tmp |= grbm_soft_reset;
		dev_info(adev->dev, "GRBM_SOFT_RESET=0x%08X\n", tmp);
		WREG32(mmGRBM_SOFT_RESET, tmp);
		tmp = RREG32(mmGRBM_SOFT_RESET);

		udelay(50);

		tmp &= ~grbm_soft_reset;
		WREG32(mmGRBM_SOFT_RESET, tmp);
		tmp = RREG32(mmGRBM_SOFT_RESET);
	}

	if (srbm_soft_reset) {
		tmp = RREG32(mmSRBM_SOFT_RESET);
		tmp |= srbm_soft_reset;
		dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
		WREG32(mmSRBM_SOFT_RESET, tmp);
		tmp = RREG32(mmSRBM_SOFT_RESET);

		udelay(50);

		tmp &= ~srbm_soft_reset;
		WREG32(mmSRBM_SOFT_RESET, tmp);
		tmp = RREG32(mmSRBM_SOFT_RESET);
	}

	/* Wait a little for things to settle down */
	udelay(50);

	gmc_v8_0_mc_resume(adev, &save);
	udelay(50);

	vi_print_gpu_status_regs(adev);
}

static void vi_gpu_pci_config_reset(struct amdgpu_device *adev)
{
	struct amdgpu_mode_mc_save save;
	u32 tmp, i;

	dev_info(adev->dev, "GPU pci config reset\n");

	/* disable dpm? */

	/* disable cg/pg */

	/* Disable GFX parsing/prefetching */
	tmp = RREG32(mmCP_ME_CNTL);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, ME_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, PFP_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_ME_CNTL, CE_HALT, 1);
	WREG32(mmCP_ME_CNTL, tmp);

	/* Disable MEC parsing/prefetching */
	tmp = RREG32(mmCP_MEC_CNTL);
	tmp = REG_SET_FIELD(tmp, CP_MEC_CNTL, MEC_ME1_HALT, 1);
	tmp = REG_SET_FIELD(tmp, CP_MEC_CNTL, MEC_ME2_HALT, 1);
	WREG32(mmCP_MEC_CNTL, tmp);

	/* Disable GFX parsing/prefetching */
	WREG32(mmCP_ME_CNTL, CP_ME_CNTL__ME_HALT_MASK |
		CP_ME_CNTL__PFP_HALT_MASK | CP_ME_CNTL__CE_HALT_MASK);

	/* Disable MEC parsing/prefetching */
	WREG32(mmCP_MEC_CNTL,
			CP_MEC_CNTL__MEC_ME1_HALT_MASK | CP_MEC_CNTL__MEC_ME2_HALT_MASK);

	/* sdma0 */
	tmp = RREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET);
	tmp = REG_SET_FIELD(tmp, SDMA0_F32_CNTL, HALT, 1);
	WREG32(mmSDMA0_F32_CNTL + SDMA0_REGISTER_OFFSET, tmp);

	/* sdma1 */
	tmp = RREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET);
	tmp = REG_SET_FIELD(tmp, SDMA0_F32_CNTL, HALT, 1);
	WREG32(mmSDMA0_F32_CNTL + SDMA1_REGISTER_OFFSET, tmp);

	/* XXX other engines? */

	/* halt the rlc, disable cp internal ints */
	//XXX
	//gfx_v8_0_rlc_stop(adev);

	udelay(50);

	/* disable mem access */
	gmc_v8_0_mc_stop(adev, &save);
	if (amdgpu_asic_wait_for_mc_idle(adev)) {
		dev_warn(adev->dev, "Wait for MC idle timed out !\n");
	}

	/* disable BM */
	pci_clear_master(adev->pdev);
	/* reset */
	amdgpu_pci_config_reset(adev);

	udelay(100);

	/* wait for asic to come out of reset */
	for (i = 0; i < adev->usec_timeout; i++) {
		if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff)
			break;
		udelay(1);
	}

}

static void vi_set_bios_scratch_engine_hung(struct amdgpu_device *adev, bool hung)
{
	u32 tmp = RREG32(mmBIOS_SCRATCH_3);

	if (hung)
		tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
	else
		tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;

	WREG32(mmBIOS_SCRATCH_3, tmp);
}

/**
 * vi_asic_reset - soft reset GPU
 *
 * @adev: amdgpu_device pointer
 *
 * Look up which blocks are hung and attempt
 * to reset them.
 * Returns 0 for success.
 */
static int vi_asic_reset(struct amdgpu_device *adev)
{
	u32 reset_mask;

	reset_mask = vi_gpu_check_soft_reset(adev);

	if (reset_mask)
		vi_set_bios_scratch_engine_hung(adev, true);

	/* try soft reset */
	vi_gpu_soft_reset(adev, reset_mask);

	reset_mask = vi_gpu_check_soft_reset(adev);

	/* try pci config reset */
	if (reset_mask && amdgpu_hard_reset)
		vi_gpu_pci_config_reset(adev);

	reset_mask = vi_gpu_check_soft_reset(adev);

	if (!reset_mask)
		vi_set_bios_scratch_engine_hung(adev, false);

	return 0;
}

static int vi_set_uvd_clock(struct amdgpu_device *adev, u32 clock,
			u32 cntl_reg, u32 status_reg)
{
	int r, i;
	struct atom_clock_dividers dividers;
	uint32_t tmp;

	r = amdgpu_atombios_get_clock_dividers(adev,
					       COMPUTE_GPUCLK_INPUT_FLAG_DEFAULT_GPUCLK,
					       clock, false, &dividers);
	if (r)
		return r;

	tmp = RREG32_SMC(cntl_reg);
	tmp &= ~(CG_DCLK_CNTL__DCLK_DIR_CNTL_EN_MASK |
		CG_DCLK_CNTL__DCLK_DIVIDER_MASK);
	tmp |= dividers.post_divider;
	WREG32_SMC(cntl_reg, tmp);

	for (i = 0; i < 100; i++) {
		if (RREG32_SMC(status_reg) & CG_DCLK_STATUS__DCLK_STATUS_MASK)
			break;
		mdelay(10);
	}
	if (i == 100)
		return -ETIMEDOUT;

	return 0;
}

static int vi_set_uvd_clocks(struct amdgpu_device *adev, u32 vclk, u32 dclk)
{
	int r;

	r = vi_set_uvd_clock(adev, vclk, ixCG_VCLK_CNTL, ixCG_VCLK_STATUS);
	if (r)
		return r;

	r = vi_set_uvd_clock(adev, dclk, ixCG_DCLK_CNTL, ixCG_DCLK_STATUS);

	return 0;
}

static int vi_set_vce_clocks(struct amdgpu_device *adev, u32 evclk, u32 ecclk)
{
	/* todo */

	return 0;
}

static void vi_pcie_gen3_enable(struct amdgpu_device *adev)
{
	u32 mask;
	int ret;

	if (amdgpu_pcie_gen2 == 0)
		return;

	if (adev->flags & AMDGPU_IS_APU)
		return;

	ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
	if (ret != 0)
		return;

	if (!(mask & (DRM_PCIE_SPEED_50 | DRM_PCIE_SPEED_80)))
		return;

	/* todo */
}

static void vi_program_aspm(struct amdgpu_device *adev)
{

	if (amdgpu_aspm == 0)
		return;

	/* todo */
}

static void vi_enable_doorbell_aperture(struct amdgpu_device *adev,
					bool enable)
{
	u32 tmp;

	/* not necessary on CZ */
	if (adev->flags & AMDGPU_IS_APU)
		return;

	tmp = RREG32(mmBIF_DOORBELL_APER_EN);
	if (enable)
		tmp = REG_SET_FIELD(tmp, BIF_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, 1);
	else
		tmp = REG_SET_FIELD(tmp, BIF_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, 0);

	WREG32(mmBIF_DOORBELL_APER_EN, tmp);
}

/* topaz has no DCE, UVD, VCE */
static const struct amdgpu_ip_block_version topaz_ip_blocks[] =
{
	/* ORDER MATTERS! */
	{
		.type = AMDGPU_IP_BLOCK_TYPE_COMMON,
		.major = 2,
		.minor = 0,
		.rev = 0,
		.funcs = &vi_common_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GMC,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gmc_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_IH,
		.major = 2,
		.minor = 4,
		.rev = 0,
		.funcs = &iceland_ih_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SMC,
		.major = 7,
		.minor = 1,
		.rev = 0,
		.funcs = &iceland_dpm_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GFX,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gfx_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SDMA,
		.major = 2,
		.minor = 4,
		.rev = 0,
		.funcs = &sdma_v2_4_ip_funcs,
	},
};

static const struct amdgpu_ip_block_version tonga_ip_blocks[] =
{
	/* ORDER MATTERS! */
	{
		.type = AMDGPU_IP_BLOCK_TYPE_COMMON,
		.major = 2,
		.minor = 0,
		.rev = 0,
		.funcs = &vi_common_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GMC,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gmc_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_IH,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &tonga_ih_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SMC,
		.major = 7,
		.minor = 1,
		.rev = 0,
		.funcs = &tonga_dpm_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_DCE,
		.major = 10,
		.minor = 0,
		.rev = 0,
		.funcs = &dce_v10_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GFX,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gfx_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SDMA,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &sdma_v3_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_UVD,
		.major = 5,
		.minor = 0,
		.rev = 0,
		.funcs = &uvd_v5_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_VCE,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &vce_v3_0_ip_funcs,
	},
};

static const struct amdgpu_ip_block_version cz_ip_blocks[] =
{
	/* ORDER MATTERS! */
	{
		.type = AMDGPU_IP_BLOCK_TYPE_COMMON,
		.major = 2,
		.minor = 0,
		.rev = 0,
		.funcs = &vi_common_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GMC,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gmc_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_IH,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &cz_ih_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SMC,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &cz_dpm_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_DCE,
		.major = 11,
		.minor = 0,
		.rev = 0,
		.funcs = &dce_v11_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_GFX,
		.major = 8,
		.minor = 0,
		.rev = 0,
		.funcs = &gfx_v8_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_SDMA,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &sdma_v3_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_UVD,
		.major = 6,
		.minor = 0,
		.rev = 0,
		.funcs = &uvd_v6_0_ip_funcs,
	},
	{
		.type = AMDGPU_IP_BLOCK_TYPE_VCE,
		.major = 3,
		.minor = 0,
		.rev = 0,
		.funcs = &vce_v3_0_ip_funcs,
	},
};

int vi_set_ip_blocks(struct amdgpu_device *adev)
{
	switch (adev->asic_type) {
	case CHIP_TOPAZ:
		adev->ip_blocks = topaz_ip_blocks;
		adev->num_ip_blocks = ARRAY_SIZE(topaz_ip_blocks);
		break;
	case CHIP_TONGA:
		adev->ip_blocks = tonga_ip_blocks;
		adev->num_ip_blocks = ARRAY_SIZE(tonga_ip_blocks);
		break;
	case CHIP_CARRIZO:
		adev->ip_blocks = cz_ip_blocks;
		adev->num_ip_blocks = ARRAY_SIZE(cz_ip_blocks);
		break;
	default:
		/* FIXME: not supported yet */
		return -EINVAL;
	}

	adev->ip_block_enabled = kcalloc(adev->num_ip_blocks, sizeof(bool), GFP_KERNEL);
	if (adev->ip_block_enabled == NULL)
		return -ENOMEM;

	return 0;
}

static uint32_t vi_get_rev_id(struct amdgpu_device *adev)
{
	if (adev->asic_type == CHIP_TOPAZ)
		return (RREG32(mmPCIE_EFUSE4) & PCIE_EFUSE4__STRAP_BIF_ATI_REV_ID_MASK)
			>> PCIE_EFUSE4__STRAP_BIF_ATI_REV_ID__SHIFT;
	else
		return (RREG32(mmCC_DRM_ID_STRAPS) & CC_DRM_ID_STRAPS__ATI_REV_ID_MASK)
			>> CC_DRM_ID_STRAPS__ATI_REV_ID__SHIFT;
}

static const struct amdgpu_asic_funcs vi_asic_funcs =
{
	.read_disabled_bios = &vi_read_disabled_bios,
	.read_register = &vi_read_register,
	.reset = &vi_asic_reset,
	.set_vga_state = &vi_vga_set_state,
	.get_xclk = &vi_get_xclk,
	.set_uvd_clocks = &vi_set_uvd_clocks,
	.set_vce_clocks = &vi_set_vce_clocks,
	.get_cu_info = &gfx_v8_0_get_cu_info,
	/* these should be moved to their own ip modules */
	.get_gpu_clock_counter = &gfx_v8_0_get_gpu_clock_counter,
	.wait_for_mc_idle = &gmc_v8_0_mc_wait_for_idle,
};

static int vi_common_early_init(struct amdgpu_device *adev)
{
	bool smc_enabled = false;

	adev->smc_rreg = &vi_smc_rreg;
	adev->smc_wreg = &vi_smc_wreg;
	adev->pcie_rreg = &vi_pcie_rreg;
	adev->pcie_wreg = &vi_pcie_wreg;
	adev->uvd_ctx_rreg = &vi_uvd_ctx_rreg;
	adev->uvd_ctx_wreg = &vi_uvd_ctx_wreg;
	adev->didt_rreg = &vi_didt_rreg;
	adev->didt_wreg = &vi_didt_wreg;

	adev->asic_funcs = &vi_asic_funcs;

	if (amdgpu_get_ip_block(adev, AMDGPU_IP_BLOCK_TYPE_SMC) &&
		(amdgpu_ip_block_mask & (1 << AMDGPU_IP_BLOCK_TYPE_SMC)))
		smc_enabled = true;

	adev->rev_id = vi_get_rev_id(adev);
	adev->external_rev_id = 0xFF;
	switch (adev->asic_type) {
	case CHIP_TOPAZ:
		adev->has_uvd = false;
		adev->cg_flags = 0;
		adev->pg_flags = 0;
		adev->external_rev_id = 0x1;
		if (amdgpu_smc_load_fw && smc_enabled)
			adev->firmware.smu_load = true;
		break;
	case CHIP_TONGA:
		adev->has_uvd = true;
		adev->cg_flags = 0;
		adev->pg_flags = 0;
		adev->external_rev_id = adev->rev_id + 0x14;
		if (amdgpu_smc_load_fw && smc_enabled)
			adev->firmware.smu_load = true;
		break;
	case CHIP_CARRIZO:
		adev->has_uvd = true;
		adev->cg_flags = 0;
		adev->pg_flags = 0;
		adev->external_rev_id = adev->rev_id + 0x1;
		if (amdgpu_smc_load_fw && smc_enabled)
			adev->firmware.smu_load = true;
		break;
	default:
		/* FIXME: not supported yet */
		return -EINVAL;
	}

	return 0;
}

static int vi_common_sw_init(struct amdgpu_device *adev)
{
	return 0;
}

static int vi_common_sw_fini(struct amdgpu_device *adev)
{
	return 0;
}

static int vi_common_hw_init(struct amdgpu_device *adev)
{
	/* move the golden regs per IP block */
	vi_init_golden_registers(adev);
	/* enable pcie gen2/3 link */
	vi_pcie_gen3_enable(adev);
	/* enable aspm */
	vi_program_aspm(adev);
	/* enable the doorbell aperture */
	vi_enable_doorbell_aperture(adev, true);

	return 0;
}

static int vi_common_hw_fini(struct amdgpu_device *adev)
{
	/* enable the doorbell aperture */
	vi_enable_doorbell_aperture(adev, false);

	return 0;
}

static int vi_common_suspend(struct amdgpu_device *adev)
{
	return vi_common_hw_fini(adev);
}

static int vi_common_resume(struct amdgpu_device *adev)
{
	return vi_common_hw_init(adev);
}

static bool vi_common_is_idle(struct amdgpu_device *adev)
{
	return true;
}

static int vi_common_wait_for_idle(struct amdgpu_device *adev)
{
	return 0;
}

static void vi_common_print_status(struct amdgpu_device *adev)
{

}

static int vi_common_soft_reset(struct amdgpu_device *adev)
{
	/* XXX hard reset?? */
	return 0;
}

static int vi_common_set_clockgating_state(struct amdgpu_device *adev,
					    enum amdgpu_clockgating_state state)
{
	return 0;
}

static int vi_common_set_powergating_state(struct amdgpu_device *adev,
					    enum amdgpu_powergating_state state)
{
	return 0;
}

const struct amdgpu_ip_funcs vi_common_ip_funcs = {
	.early_init = vi_common_early_init,
	.late_init = NULL,
	.sw_init = vi_common_sw_init,
	.sw_fini = vi_common_sw_fini,
	.hw_init = vi_common_hw_init,
	.hw_fini = vi_common_hw_fini,
	.suspend = vi_common_suspend,
	.resume = vi_common_resume,
	.is_idle = vi_common_is_idle,
	.wait_for_idle = vi_common_wait_for_idle,
	.soft_reset = vi_common_soft_reset,
	.print_status = vi_common_print_status,
	.set_clockgating_state = vi_common_set_clockgating_state,
	.set_powergating_state = vi_common_set_powergating_state,
};