drm/amd/powerplay: add smu support for ellesmere/baffin

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

5 files changed, 1050 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 8b653f2c7086..8bc4040d18cf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -681,9 +681,10 @@ static uint32_t fw_type_convert(struct cgs_device *cgs_device, uint32_t fw_type)
 		result = AMDGPU_UCODE_ID_CP_MEC1;
 		break;
 	case CGS_UCODE_ID_CP_MEC_JT2:
-		if (adev->asic_type == CHIP_TONGA)
+		if (adev->asic_type == CHIP_TONGA || adev->asic_type == CHIP_BAFFIN
+		  || adev->asic_type == CHIP_ELLESMERE)
 			result = AMDGPU_UCODE_ID_CP_MEC2;
-		else if (adev->asic_type == CHIP_CARRIZO)
+		else
 			result = AMDGPU_UCODE_ID_CP_MEC1;
 		break;
 	case CGS_UCODE_ID_RLC_G:
@@ -741,6 +742,12 @@ static int amdgpu_cgs_get_firmware_info(struct cgs_device *cgs_device,
 		case CHIP_FIJI:
 			strcpy(fw_name, "amdgpu/fiji_smc.bin");
 			break;
+		case CHIP_BAFFIN:
+			strcpy(fw_name, "amdgpu/baffin_smc.bin");
+			break;
+		case CHIP_ELLESMERE:
+			strcpy(fw_name, "amdgpu/ellesmere_smc.bin");
+			break;
 		default:
 			DRM_ERROR("SMC firmware not supported\n");
 			return -EINVAL;
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/Makefile b/drivers/gpu/drm/amd/powerplay/smumgr/Makefile
index 6c4ef135cf01..4f751e5fe5ae 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/Makefile
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the 'smu manager' sub-component of powerplay.
 # It provides the smu management services for the driver.
 
-SMU_MGR = smumgr.o cz_smumgr.o tonga_smumgr.o fiji_smumgr.o
+SMU_MGR = smumgr.o cz_smumgr.o tonga_smumgr.o fiji_smumgr.o ellesmere_smumgr.o
 
 AMD_PP_SMUMGR = $(addprefix $(AMD_PP_PATH)/smumgr/,$(SMU_MGR))
 
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.c
new file mode 100644
index 000000000000..f57ba123cadb
--- /dev/null
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.c
@@ -0,0 +1,969 @@
+/*
+ * Copyright 2015 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 "smumgr.h"
+#include "smu74.h"
+#include "smu_ucode_xfer_vi.h"
+#include "ellesmere_smumgr.h"
+#include "smu74_discrete.h"
+#include "smu/smu_7_1_3_d.h"
+#include "smu/smu_7_1_3_sh_mask.h"
+#include "gmc/gmc_8_1_d.h"
+#include "gmc/gmc_8_1_sh_mask.h"
+#include "oss/oss_3_0_d.h"
+#include "gca/gfx_8_0_d.h"
+#include "bif/bif_5_0_d.h"
+#include "bif/bif_5_0_sh_mask.h"
+#include "ellesmere_pwrvirus.h"
+#include "ppatomctrl.h"
+#include "pp_debug.h"
+#include "cgs_common.h"
+
+#define ELLESMERE_SMC_SIZE 0x20000
+#define VOLTAGE_SCALE 4
+
+/* Microcode file is stored in this buffer */
+#define BUFFER_SIZE                 80000
+#define MAX_STRING_SIZE             15
+#define BUFFER_SIZETWO              131072  /* 128 *1024 */
+
+#define SMC_RAM_END 0x40000
+
+SMU74_Discrete_GraphicsLevel avfs_graphics_level_ellesmere[8] = {
+	/*  Min      pcie   DeepSleep Activity  CgSpll      CgSpll    CcPwr  CcPwr  Sclk         Enabled      Enabled                       Voltage    Power */
+	/* Voltage, DpmLevel, DivId,  Level,  FuncCntl3,  FuncCntl4,  DynRm, DynRm1 Did, Padding,ForActivity, ForThrottle, UpHyst, DownHyst, DownHyst, Throttle */
+	{ 0x3c0fd047, 0x00, 0x03, 0x1e00, 0x00200410, 0x87020000, 0, 0, 0x16, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x30750000, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0xa00fd047, 0x01, 0x04, 0x1e00, 0x00800510, 0x87020000, 0, 0, 0x16, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x409c0000, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0x0410d047, 0x01, 0x00, 0x1e00, 0x00600410, 0x87020000, 0, 0, 0x0e, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x50c30000, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0x6810d047, 0x01, 0x00, 0x1e00, 0x00800410, 0x87020000, 0, 0, 0x0c, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x60ea0000, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0xcc10d047, 0x01, 0x00, 0x1e00, 0x00e00410, 0x87020000, 0, 0, 0x0c, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0xe8fd0000, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0x3011d047, 0x01, 0x00, 0x1e00, 0x00400510, 0x87020000, 0, 0, 0x0c, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x70110100, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0x9411d047, 0x01, 0x00, 0x1e00, 0x00a00510, 0x87020000, 0, 0, 0x0c, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0xf8240100, 0, 0, 0, 0, 0, 0, 0 } },
+	{ 0xf811d047, 0x01, 0x00, 0x1e00, 0x00000610, 0x87020000, 0, 0, 0x0c, 0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, { 0x80380100, 0, 0, 0, 0, 0, 0, 0 } }
+};
+
+SMU74_Discrete_MemoryLevel avfs_memory_level_ellesmere = {0x50140000, 0x50140000, 0x00320000, 0x00, 0x00,
+							0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x0000, 0x00, 0x00};
+
+/**
+* Set the address for reading/writing the SMC SRAM space.
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    smcAddress the address in the SMC RAM to access.
+*/
+static int ellesmere_set_smc_sram_address(struct pp_smumgr *smumgr, uint32_t smc_addr, uint32_t limit)
+{
+	PP_ASSERT_WITH_CODE((0 == (3 & smc_addr)), "SMC address must be 4 byte aligned.", return -EINVAL);
+	PP_ASSERT_WITH_CODE((limit > (smc_addr + 3)), "SMC addr is beyond the SMC RAM area.", return -EINVAL);
+
+	cgs_write_register(smumgr->device, mmSMC_IND_INDEX_11, smc_addr);
+	SMUM_WRITE_FIELD(smumgr->device, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_11, 0);
+
+	return 0;
+}
+
+/**
+* Copy bytes from SMC RAM space into driver memory.
+*
+* @param    smumgr  the address of the powerplay SMU manager.
+* @param    smc_start_address the start address in the SMC RAM to copy bytes from
+* @param    src the byte array to copy the bytes to.
+* @param    byte_count the number of bytes to copy.
+*/
+int ellesmere_copy_bytes_from_smc(struct pp_smumgr *smumgr, uint32_t smc_start_address, uint32_t *dest, uint32_t byte_count, uint32_t limit)
+{
+	uint32_t data;
+	uint32_t addr;
+	uint8_t *dest_byte;
+	uint8_t i, data_byte[4] = {0};
+	uint32_t *pdata = (uint32_t *)&data_byte;
+
+	PP_ASSERT_WITH_CODE((0 == (3 & smc_start_address)), "SMC address must be 4 byte aligned.", return -1;);
+	PP_ASSERT_WITH_CODE((limit > (smc_start_address + byte_count)), "SMC address is beyond the SMC RAM area.", return -1);
+
+	addr = smc_start_address;
+
+	while (byte_count >= 4) {
+		ellesmere_read_smc_sram_dword(smumgr, addr, &data, limit);
+
+		*dest = PP_SMC_TO_HOST_UL(data);
+
+		dest += 1;
+		byte_count -= 4;
+		addr += 4;
+	}
+
+	if (byte_count) {
+		ellesmere_read_smc_sram_dword(smumgr, addr, &data, limit);
+		*pdata = PP_SMC_TO_HOST_UL(data);
+	/* Cast dest into byte type in dest_byte.  This way, we don't overflow if the allocated memory is not 4-byte aligned. */
+		dest_byte = (uint8_t *)dest;
+		for (i = 0; i < byte_count; i++)
+			dest_byte[i] = data_byte[i];
+	}
+
+	return 0;
+}
+
+/**
+* Copy bytes from an array into the SMC RAM space.
+*
+* @param    pSmuMgr  the address of the powerplay SMU manager.
+* @param    smc_start_address the start address in the SMC RAM to copy bytes to.
+* @param    src the byte array to copy the bytes from.
+* @param    byte_count the number of bytes to copy.
+*/
+int ellesmere_copy_bytes_to_smc(struct pp_smumgr *smumgr, uint32_t smc_start_address,
+				const uint8_t *src, uint32_t byte_count, uint32_t limit)
+{
+	int result;
+	uint32_t data = 0;
+	uint32_t original_data;
+	uint32_t addr = 0;
+	uint32_t extra_shift;
+
+	PP_ASSERT_WITH_CODE((0 == (3 & smc_start_address)), "SMC address must be 4 byte aligned.", return -1);
+	PP_ASSERT_WITH_CODE((limit > (smc_start_address + byte_count)), "SMC address is beyond the SMC RAM area.", return -1);
+
+	addr = smc_start_address;
+
+	while (byte_count >= 4) {
+	/* Bytes are written into the SMC addres space with the MSB first. */
+		data = src[0] * 0x1000000 + src[1] * 0x10000 + src[2] * 0x100 + src[3];
+
+		result = ellesmere_set_smc_sram_address(smumgr, addr, limit);
+
+		if (0 != result)
+			return result;
+
+		cgs_write_register(smumgr->device, mmSMC_IND_DATA_11, data);
+
+		src += 4;
+		byte_count -= 4;
+		addr += 4;
+	}
+
+	if (0 != byte_count) {
+
+		data = 0;
+
+		result = ellesmere_set_smc_sram_address(smumgr, addr, limit);
+
+		if (0 != result)
+			return result;
+
+
+		original_data = cgs_read_register(smumgr->device, mmSMC_IND_DATA_11);
+
+		extra_shift = 8 * (4 - byte_count);
+
+		while (byte_count > 0) {
+			/* Bytes are written into the SMC addres space with the MSB first. */
+			data = (0x100 * data) + *src++;
+			byte_count--;
+		}
+
+		data <<= extra_shift;
+
+		data |= (original_data & ~((~0UL) << extra_shift));
+
+		result = ellesmere_set_smc_sram_address(smumgr, addr, limit);
+
+		if (0 != result)
+			return result;
+
+		cgs_write_register(smumgr->device, mmSMC_IND_DATA_11, data);
+	}
+
+	return 0;
+}
+
+
+static int ellesmere_program_jump_on_start(struct pp_smumgr *smumgr)
+{
+	static unsigned char data[4] = { 0xE0, 0x00, 0x80, 0x40 };
+
+	ellesmere_copy_bytes_to_smc(smumgr, 0x0, data, 4, sizeof(data)+1);
+
+	return 0;
+}
+
+/**
+* Return if the SMC is currently running.
+*
+* @param    smumgr  the address of the powerplay hardware manager.
+*/
+bool ellesmere_is_smc_ram_running(struct pp_smumgr *smumgr)
+{
+	return ((0 == SMUM_READ_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC, SMC_SYSCON_CLOCK_CNTL_0, ck_disable))
+	&& (0x20100 <= cgs_read_ind_register(smumgr->device, CGS_IND_REG__SMC, ixSMC_PC_C)));
+}
+
+/**
+* Send a message to the SMC, and wait for its response.
+*
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    msg the message to send.
+* @return   The response that came from the SMC.
+*/
+int ellesmere_send_msg_to_smc(struct pp_smumgr *smumgr, uint16_t msg)
+{
+	if (!ellesmere_is_smc_ram_running(smumgr))
+		return -1;
+
+	SMUM_WAIT_FIELD_UNEQUAL(smumgr, SMC_RESP_0, SMC_RESP, 0);
+
+	if (1 != SMUM_READ_FIELD(smumgr->device, SMC_RESP_0, SMC_RESP))
+		printk("Failed to send Previous Message.\n");
+
+
+	cgs_write_register(smumgr->device, mmSMC_MESSAGE_0, msg);
+
+	SMUM_WAIT_FIELD_UNEQUAL(smumgr, SMC_RESP_0, SMC_RESP, 0);
+
+	if (1 != SMUM_READ_FIELD(smumgr->device, SMC_RESP_0, SMC_RESP))
+		printk("Failed to send Message.\n");
+
+	return 0;
+}
+
+
+/**
+* Send a message to the SMC, and do not wait for its response.
+*
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    msg the message to send.
+* @return   Always return 0.
+*/
+int ellesmere_send_msg_to_smc_without_waiting(struct pp_smumgr *smumgr, uint16_t msg)
+{
+	cgs_write_register(smumgr->device, mmSMC_MESSAGE_0, msg);
+
+	return 0;
+}
+
+/**
+* Send a message to the SMC with parameter
+*
+* @param    smumgr:  the address of the powerplay hardware manager.
+* @param    msg: the message to send.
+* @param    parameter: the parameter to send
+* @return   The response that came from the SMC.
+*/
+int ellesmere_send_msg_to_smc_with_parameter(struct pp_smumgr *smumgr, uint16_t msg, uint32_t parameter)
+{
+	if (!ellesmere_is_smc_ram_running(smumgr)) {
+		return -1;
+	}
+
+	SMUM_WAIT_FIELD_UNEQUAL(smumgr, SMC_RESP_0, SMC_RESP, 0);
+
+	cgs_write_register(smumgr->device, mmSMC_MSG_ARG_0, parameter);
+
+	return ellesmere_send_msg_to_smc(smumgr, msg);
+}
+
+
+/**
+* Send a message to the SMC with parameter, do not wait for response
+*
+* @param    smumgr:  the address of the powerplay hardware manager.
+* @param    msg: the message to send.
+* @param    parameter: the parameter to send
+* @return   The response that came from the SMC.
+*/
+int ellesmere_send_msg_to_smc_with_parameter_without_waiting(struct pp_smumgr *smumgr, uint16_t msg, uint32_t parameter)
+{
+	cgs_write_register(smumgr->device, mmSMC_MSG_ARG_0, parameter);
+
+	return ellesmere_send_msg_to_smc_without_waiting(smumgr, msg);
+}
+
+int ellesmere_send_msg_to_smc_offset(struct pp_smumgr *smumgr)
+{
+	cgs_write_register(smumgr->device, mmSMC_MSG_ARG_0, 0x20000);
+
+	cgs_write_register(smumgr->device, mmSMC_MESSAGE_0, PPSMC_MSG_Test);
+
+	SMUM_WAIT_FIELD_UNEQUAL(smumgr, SMC_RESP_0, SMC_RESP, 0);
+
+	if (1 != SMUM_READ_FIELD(smumgr->device, SMC_RESP_0, SMC_RESP))
+		printk("Failed to send Message.\n");
+
+	return 0;
+}
+
+/**
+* Wait until the SMC is doing nithing. Doing nothing means that the SMC is either turned off or it is sitting on the STOP instruction.
+*
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    msg the message to send.
+* @return   The response that came from the SMC.
+*/
+int ellesmere_wait_for_smc_inactive(struct pp_smumgr *smumgr)
+{
+	/* If the SMC is not even on it qualifies as inactive. */
+	if (!ellesmere_is_smc_ram_running(smumgr))
+		return -1;
+
+	SMUM_WAIT_VFPF_INDIRECT_FIELD(smumgr, SMC_IND, SMC_SYSCON_CLOCK_CNTL_0, cken, 0);
+	return 0;
+}
+
+
+/**
+* Upload the SMC firmware to the SMC microcontroller.
+*
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    pFirmware the data structure containing the various sections of the firmware.
+*/
+static int ellesmere_upload_smc_firmware_data(struct pp_smumgr *smumgr, uint32_t length, uint32_t *src, uint32_t limit)
+{
+	uint32_t byte_count = length;
+
+	PP_ASSERT_WITH_CODE((limit >= byte_count), "SMC address is beyond the SMC RAM area.", return -1);
+
+	cgs_write_register(smumgr->device, mmSMC_IND_INDEX_11, 0x20000);
+	SMUM_WRITE_FIELD(smumgr->device, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_11, 1);
+
+
+	for (; byte_count >= 4; byte_count -= 4)
+		cgs_write_register(smumgr->device, mmSMC_IND_DATA_11, *src++);
+
+	SMUM_WRITE_FIELD(smumgr->device, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_11, 0);
+
+	PP_ASSERT_WITH_CODE((0 == byte_count), "SMC size must be dividable by 4.", return -1);
+
+	return 0;
+}
+
+static enum cgs_ucode_id ellesmere_convert_fw_type_to_cgs(uint32_t fw_type)
+{
+	enum cgs_ucode_id result = CGS_UCODE_ID_MAXIMUM;
+
+	switch (fw_type) {
+	case UCODE_ID_SMU:
+		result = CGS_UCODE_ID_SMU;
+		break;
+	case UCODE_ID_SDMA0:
+		result = CGS_UCODE_ID_SDMA0;
+		break;
+	case UCODE_ID_SDMA1:
+		result = CGS_UCODE_ID_SDMA1;
+		break;
+	case UCODE_ID_CP_CE:
+		result = CGS_UCODE_ID_CP_CE;
+		break;
+	case UCODE_ID_CP_PFP:
+		result = CGS_UCODE_ID_CP_PFP;
+		break;
+	case UCODE_ID_CP_ME:
+		result = CGS_UCODE_ID_CP_ME;
+		break;
+	case UCODE_ID_CP_MEC:
+		result = CGS_UCODE_ID_CP_MEC;
+		break;
+	case UCODE_ID_CP_MEC_JT1:
+		result = CGS_UCODE_ID_CP_MEC_JT1;
+		break;
+	case UCODE_ID_CP_MEC_JT2:
+		result = CGS_UCODE_ID_CP_MEC_JT2;
+		break;
+	case UCODE_ID_RLC_G:
+		result = CGS_UCODE_ID_RLC_G;
+		break;
+	default:
+		break;
+	}
+
+	return result;
+}
+
+static int ellesmere_upload_smu_firmware_image(struct pp_smumgr *smumgr)
+{
+	int result = 0;
+
+	struct cgs_firmware_info info = {0};
+
+	cgs_get_firmware_info(smumgr->device,
+			ellesmere_convert_fw_type_to_cgs(UCODE_ID_SMU), &info);
+
+	/* TO DO cgs_init_samu_load_smu(smumgr->device, (uint32_t *)info.kptr, info.image_size, smu_data->post_initial_boot);*/
+
+	result = ellesmere_upload_smc_firmware_data(smumgr, info.image_size, (uint32_t *)info.kptr, ELLESMERE_SMC_SIZE);
+
+	return result;
+}
+
+/**
+* Read a 32bit value from the SMC SRAM space.
+* ALL PARAMETERS ARE IN HOST BYTE ORDER.
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    smcAddress the address in the SMC RAM to access.
+* @param    value and output parameter for the data read from the SMC SRAM.
+*/
+int ellesmere_read_smc_sram_dword(struct pp_smumgr *smumgr, uint32_t smc_addr, uint32_t *value, uint32_t limit)
+{
+	int result;
+
+	result = ellesmere_set_smc_sram_address(smumgr, smc_addr, limit);
+
+	if (result)
+		return result;
+
+	*value = cgs_read_register(smumgr->device, mmSMC_IND_DATA_11);
+	return 0;
+}
+
+/**
+* Write a 32bit value to the SMC SRAM space.
+* ALL PARAMETERS ARE IN HOST BYTE ORDER.
+* @param    smumgr  the address of the powerplay hardware manager.
+* @param    smc_addr the address in the SMC RAM to access.
+* @param    value to write to the SMC SRAM.
+*/
+int ellesmere_write_smc_sram_dword(struct pp_smumgr *smumgr, uint32_t smc_addr, uint32_t value, uint32_t limit)
+{
+	int result;
+
+	result = ellesmere_set_smc_sram_address(smumgr, smc_addr, limit);
+
+	if (result)
+		return result;
+
+	cgs_write_register(smumgr->device, mmSMC_IND_DATA_11, value);
+
+	return 0;
+}
+
+
+int ellesmere_smu_fini(struct pp_smumgr *smumgr)
+{
+	if (smumgr->backend) {
+		kfree(smumgr->backend);
+		smumgr->backend = NULL;
+	}
+	return 0;
+}
+
+/* Convert the firmware type to SMU type mask. For MEC, we need to check all MEC related type */
+static uint32_t ellesmere_get_mask_for_firmware_type(uint32_t fw_type)
+{
+	uint32_t result = 0;
+
+	switch (fw_type) {
+	case UCODE_ID_SDMA0:
+		result = UCODE_ID_SDMA0_MASK;
+		break;
+	case UCODE_ID_SDMA1:
+		result = UCODE_ID_SDMA1_MASK;
+		break;
+	case UCODE_ID_CP_CE:
+		result = UCODE_ID_CP_CE_MASK;
+		break;
+	case UCODE_ID_CP_PFP:
+		result = UCODE_ID_CP_PFP_MASK;
+		break;
+	case UCODE_ID_CP_ME:
+		result = UCODE_ID_CP_ME_MASK;
+		break;
+	case UCODE_ID_CP_MEC_JT1:
+	case UCODE_ID_CP_MEC_JT2:
+		result = UCODE_ID_CP_MEC_MASK;
+		break;
+	case UCODE_ID_RLC_G:
+		result = UCODE_ID_RLC_G_MASK;
+		break;
+	default:
+		printk("UCode type is out of range! \n");
+		result = 0;
+	}
+
+	return result;
+}
+
+/* Populate one firmware image to the data structure */
+
+static int ellesmere_populate_single_firmware_entry(struct pp_smumgr *smumgr,
+						uint32_t fw_type,
+						struct SMU_Entry *entry)
+{
+	int result = 0;
+	struct cgs_firmware_info info = {0};
+
+	result = cgs_get_firmware_info(smumgr->device,
+				ellesmere_convert_fw_type_to_cgs(fw_type),
+				&info);
+
+	if (!result) {
+		entry->version = info.version;
+		entry->id = (uint16_t)fw_type;
+		entry->image_addr_high = smu_upper_32_bits(info.mc_addr);
+		entry->image_addr_low = smu_lower_32_bits(info.mc_addr);
+		entry->meta_data_addr_high = 0;
+		entry->meta_data_addr_low = 0;
+		entry->data_size_byte = info.image_size;
+		entry->num_register_entries = 0;
+	}
+
+	if (fw_type == UCODE_ID_RLC_G)
+		entry->flags = 1;
+	else
+		entry->flags = 0;
+
+	return 0;
+}
+
+static int ellesmere_request_smu_load_fw(struct pp_smumgr *smumgr)
+{
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+	uint32_t fw_to_load;
+
+	int result = 0;
+	struct SMU_DRAMData_TOC *toc;
+
+	if (!smumgr->reload_fw) {
+		printk(KERN_INFO "[ powerplay ] skip reloading...\n");
+		return 0;
+	}
+
+	if (smu_data->soft_regs_start)
+		cgs_write_ind_register(smumgr->device, CGS_IND_REG__SMC,
+					smu_data->soft_regs_start + offsetof(SMU74_SoftRegisters, UcodeLoadStatus),
+					0x0);
+
+	ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_SMU_DRAM_ADDR_HI, smu_data->smu_buffer.mc_addr_high);
+	ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_SMU_DRAM_ADDR_LO, smu_data->smu_buffer.mc_addr_low);
+
+	toc = (struct SMU_DRAMData_TOC *)smu_data->header;
+	toc->num_entries = 0;
+	toc->structure_version = 1;
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_RLC_G, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_CE, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_PFP, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_ME, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_MEC, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_MEC_JT1, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_CP_MEC_JT2, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_SDMA0, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+	PP_ASSERT_WITH_CODE(0 == ellesmere_populate_single_firmware_entry(smumgr, UCODE_ID_SDMA1, &toc->entry[toc->num_entries++]), "Failed to Get Firmware Entry.", return -1);
+
+	ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_DRV_DRAM_ADDR_HI, smu_data->header_buffer.mc_addr_high);
+	ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_DRV_DRAM_ADDR_LO, smu_data->header_buffer.mc_addr_low);
+
+	fw_to_load = UCODE_ID_RLC_G_MASK
+		   + UCODE_ID_SDMA0_MASK
+		   + UCODE_ID_SDMA1_MASK
+		   + UCODE_ID_CP_CE_MASK
+		   + UCODE_ID_CP_ME_MASK
+		   + UCODE_ID_CP_PFP_MASK
+		   + UCODE_ID_CP_MEC_MASK;
+
+	if (ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_LoadUcodes, fw_to_load))
+		printk(KERN_ERR "Fail to Request SMU Load uCode");
+
+	return result;
+}
+
+/* Check if the FW has been loaded, SMU will not return if loading has not finished. */
+static int ellesmere_check_fw_load_finish(struct pp_smumgr *smumgr, uint32_t fw_type)
+{
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+	uint32_t fw_mask = ellesmere_get_mask_for_firmware_type(fw_type);
+	uint32_t ret;
+	/* Check SOFT_REGISTERS_TABLE_28.UcodeLoadStatus */
+	ret = smum_wait_on_indirect_register(smumgr, mmSMC_IND_INDEX_11,
+					smu_data->soft_regs_start + offsetof(SMU74_SoftRegisters, UcodeLoadStatus),
+					fw_mask, fw_mask);
+
+	return ret;
+}
+
+static int ellesmere_reload_firmware(struct pp_smumgr *smumgr)
+{
+	return smumgr->smumgr_funcs->start_smu(smumgr);
+}
+
+static int ellesmere_setup_pwr_virus(struct pp_smumgr *smumgr)
+{
+	int i;
+	int result = -1;
+	uint32_t reg, data;
+
+	PWR_Command_Table *pvirus = pwr_virus_table;
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+
+
+	for (i = 0; i < PWR_VIRUS_TABLE_SIZE; i++) {
+		switch (pvirus->command) {
+		case PwrCmdWrite:
+			reg  = pvirus->reg;
+			data = pvirus->data;
+			cgs_write_register(smumgr->device, reg, data);
+			break;
+
+		case PwrCmdEnd:
+			result = 0;
+			break;
+
+		default:
+			printk("Table Exit with Invalid Command!");
+			smu_data->avfs.avfs_btc_status = AVFS_BTC_VIRUS_FAIL;
+			result = -1;
+			break;
+		}
+		pvirus++;
+	}
+
+	return result;
+}
+
+static int ellesmere_perform_btc(struct pp_smumgr *smumgr)
+{
+	int result = 0;
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+
+	if (0 != smu_data->avfs.avfs_btc_param) {
+		if (0 != ellesmere_send_msg_to_smc_with_parameter(smumgr, PPSMC_MSG_PerformBtc, smu_data->avfs.avfs_btc_param)) {
+			printk("[AVFS][SmuEllesmere_PerformBtc] PerformBTC SMU msg failed");
+			result = -1;
+		}
+	}
+	if (smu_data->avfs.avfs_btc_param > 1) {
+		/* Soft-Reset to reset the engine before loading uCode */
+		/* halt */
+		cgs_write_register(smumgr->device, mmCP_MEC_CNTL, 0x50000000);
+		/* reset everything */
+		cgs_write_register(smumgr->device, mmGRBM_SOFT_RESET, 0xffffffff);
+		cgs_write_register(smumgr->device, mmGRBM_SOFT_RESET, 0);
+	}
+	return result;
+}
+
+
+int ellesmere_setup_graphics_level_structure(struct pp_smumgr *smumgr)
+{
+	uint32_t vr_config;
+	uint32_t dpm_table_start;
+
+	uint16_t u16_boot_mvdd;
+	uint32_t graphics_level_address, vr_config_address, graphics_level_size;
+
+	graphics_level_size = sizeof(avfs_graphics_level_ellesmere);
+	u16_boot_mvdd = PP_HOST_TO_SMC_US(1300 * VOLTAGE_SCALE);
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_read_smc_sram_dword(smumgr,
+				SMU7_FIRMWARE_HEADER_LOCATION + offsetof(SMU74_Firmware_Header, DpmTable),
+				&dpm_table_start, 0x40000),
+			"[AVFS][Ellesmere_SetupGfxLvlStruct] SMU could not communicate starting address of DPM table",
+			return -1);
+
+	/*  Default value for VRConfig = VR_MERGED_WITH_VDDC + VR_STATIC_VOLTAGE(VDDCI) */
+	vr_config = 0x01000500; /* Real value:0x50001 */
+
+	vr_config_address = dpm_table_start + offsetof(SMU74_Discrete_DpmTable, VRConfig);
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_copy_bytes_to_smc(smumgr, vr_config_address,
+				(uint8_t *)&vr_config, sizeof(uint32_t), 0x40000),
+			"[AVFS][Ellesmere_SetupGfxLvlStruct] Problems copying VRConfig value over to SMC",
+			return -1);
+
+	graphics_level_address = dpm_table_start + offsetof(SMU74_Discrete_DpmTable, GraphicsLevel);
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_copy_bytes_to_smc(smumgr, graphics_level_address,
+				(uint8_t *)(&avfs_graphics_level_ellesmere),
+				graphics_level_size, 0x40000),
+			"[AVFS][Ellesmere_SetupGfxLvlStruct] Copying of SCLK DPM table failed!",
+			return -1);
+
+	graphics_level_address = dpm_table_start + offsetof(SMU74_Discrete_DpmTable, MemoryLevel);
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_copy_bytes_to_smc(smumgr, graphics_level_address,
+				(uint8_t *)(&avfs_memory_level_ellesmere), sizeof(avfs_memory_level_ellesmere), 0x40000),
+				"[AVFS][Ellesmere_SetupGfxLvlStruct] Copying of MCLK DPM table failed!",
+			return -1);
+
+	/* MVDD Boot value - neccessary for getting rid of the hang that occurs during Mclk DPM enablement */
+
+	graphics_level_address = dpm_table_start + offsetof(SMU74_Discrete_DpmTable, BootMVdd);
+
+	PP_ASSERT_WITH_CODE(0 == ellesmere_copy_bytes_to_smc(smumgr, graphics_level_address,
+			(uint8_t *)(&u16_boot_mvdd), sizeof(u16_boot_mvdd), 0x40000),
+			"[AVFS][Ellesmere_SetupGfxLvlStruct] Copying of DPM table failed!",
+			return -1);
+
+	return 0;
+}
+
+int ellesmere_avfs_event_mgr(struct pp_smumgr *smumgr, bool SMU_VFT_INTACT)
+{
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+
+	switch (smu_data->avfs.avfs_btc_status) {
+	case AVFS_BTC_COMPLETED_PREVIOUSLY:
+		break;
+
+	case AVFS_BTC_BOOT: /* Cold Boot State - Post SMU Start */
+
+		smu_data->avfs.avfs_btc_status = AVFS_BTC_DPMTABLESETUP_FAILED;
+		PP_ASSERT_WITH_CODE(0 == ellesmere_setup_graphics_level_structure(smumgr),
+		"[AVFS][Ellesmere_AVFSEventMgr] Could not Copy Graphics Level table over to SMU",
+		return -1);
+
+		if (smu_data->avfs.avfs_btc_param > 1) {
+			printk("[AVFS][Ellesmere_AVFSEventMgr] AC BTC has not been successfully verified on Fiji. There may be in this setting.");
+			smu_data->avfs.avfs_btc_status = AVFS_BTC_VIRUS_FAIL;
+			PP_ASSERT_WITH_CODE(-1 == ellesmere_setup_pwr_virus(smumgr),
+			"[AVFS][Ellesmere_AVFSEventMgr] Could not setup Pwr Virus for AVFS ",
+			return -1);
+		}
+
+		smu_data->avfs.avfs_btc_status = AVFS_BTC_FAILED;
+		PP_ASSERT_WITH_CODE(0 == ellesmere_perform_btc(smumgr),
+					"[AVFS][Ellesmere_AVFSEventMgr] Failure at SmuEllesmere_PerformBTC. AVFS Disabled",
+				 return -1);
+
+		break;
+
+	case AVFS_BTC_DISABLED:
+	case AVFS_BTC_NOTSUPPORTED:
+		break;
+
+	default:
+		printk("[AVFS] Something is broken. See log!");
+		break;
+	}
+
+	return 0;
+}
+
+static int ellesmere_start_smu_in_protection_mode(struct pp_smumgr *smumgr)
+{
+	int result = 0;
+
+	/* Wait for smc boot up */
+	/* SMUM_WAIT_VFPF_INDIRECT_FIELD_UNEQUAL(smumgr, SMC_IND, RCU_UC_EVENTS, boot_seq_done, 0) */
+
+	/* Assert reset */
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL, rst_reg, 1);
+
+	result = ellesmere_upload_smu_firmware_image(smumgr);
+	if (result != 0)
+		return result;
+
+	/* Clear status */
+	cgs_write_ind_register(smumgr->device, CGS_IND_REG__SMC, ixSMU_STATUS, 0);
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_CLOCK_CNTL_0, ck_disable, 0);
+
+	/* De-assert reset */
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL, rst_reg, 0);
+
+
+	SMUM_WAIT_VFPF_INDIRECT_FIELD(smumgr, SMC_IND, RCU_UC_EVENTS, INTERRUPTS_ENABLED, 1);
+
+
+	/* Call Test SMU message with 0x20000 offset to trigger SMU start */
+	ellesmere_send_msg_to_smc_offset(smumgr);
+
+	/* Wait done bit to be set */
+	/* Check pass/failed indicator */
+
+	SMUM_WAIT_VFPF_INDIRECT_FIELD_UNEQUAL(smumgr, SMC_IND, SMU_STATUS, SMU_DONE, 0);
+
+	if (1 != SMUM_READ_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+						SMU_STATUS, SMU_PASS))
+		PP_ASSERT_WITH_CODE(false, "SMU Firmware start failed!", return -1);
+
+
+	cgs_write_ind_register(smumgr->device, CGS_IND_REG__SMC, ixFIRMWARE_FLAGS, 0);
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL, rst_reg, 1);
+
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL, rst_reg, 0);
+
+	/* Wait for firmware to initialize */
+	SMUM_WAIT_VFPF_INDIRECT_FIELD(smumgr, SMC_IND, FIRMWARE_FLAGS, INTERRUPTS_ENABLED, 1);
+
+	return result;
+}
+
+static int ellesmere_start_smu_in_non_protection_mode(struct pp_smumgr *smumgr)
+{
+	int result = 0;
+
+	/* wait for smc boot up */
+	SMUM_WAIT_VFPF_INDIRECT_FIELD_UNEQUAL(smumgr, SMC_IND, RCU_UC_EVENTS, boot_seq_done, 0);
+
+	/* Clear firmware interrupt enable flag */
+	/* SMUM_WRITE_VFPF_INDIRECT_FIELD(pSmuMgr, SMC_IND, SMC_SYSCON_MISC_CNTL, pre_fetcher_en, 1); */
+	cgs_write_ind_register(smumgr->device, CGS_IND_REG__SMC,
+				ixFIRMWARE_FLAGS, 0);
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL,
+					rst_reg, 1);
+
+	result = ellesmere_upload_smu_firmware_image(smumgr);
+	if (result != 0)
+		return result;
+
+	/* Set smc instruct start point at 0x0 */
+	ellesmere_program_jump_on_start(smumgr);
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_CLOCK_CNTL_0, ck_disable, 0);
+
+	SMUM_WRITE_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC,
+					SMC_SYSCON_RESET_CNTL, rst_reg, 0);
+
+	/* Wait for firmware to initialize */
+
+	SMUM_WAIT_VFPF_INDIRECT_FIELD(smumgr, SMC_IND,
+					FIRMWARE_FLAGS, INTERRUPTS_ENABLED, 1);
+
+	return result;
+}
+
+static int ellesmere_start_smu(struct pp_smumgr *smumgr)
+{
+	int result = 0;
+	struct ellesmere_smumgr *smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+	bool SMU_VFT_INTACT;
+
+	/* Only start SMC if SMC RAM is not running */
+	if (!ellesmere_is_smc_ram_running(smumgr)) {
+		SMU_VFT_INTACT = false;
+		/* Check if SMU is running in protected mode */
+		if (0 == SMUM_READ_VFPF_INDIRECT_FIELD(smumgr->device, CGS_IND_REG__SMC, SMU_FIRMWARE, SMU_MODE))
+			result = ellesmere_start_smu_in_non_protection_mode(smumgr);
+		else
+			result = ellesmere_start_smu_in_protection_mode(smumgr);
+
+		if (result != 0)
+			PP_ASSERT_WITH_CODE(0, "Failed to load SMU ucode.", return result);
+
+		ellesmere_avfs_event_mgr(smumgr, true);
+	} else
+		SMU_VFT_INTACT = true; /*Driver went offline but SMU was still alive and contains the VFT table */
+
+	smu_data->post_initial_boot = true;
+	ellesmere_avfs_event_mgr(smumgr, SMU_VFT_INTACT);
+	/* Setup SoftRegsStart here for register lookup in case DummyBackEnd is used and ProcessFirmwareHeader is not executed */
+	ellesmere_read_smc_sram_dword(smumgr, SMU7_FIRMWARE_HEADER_LOCATION + offsetof(SMU74_Firmware_Header, SoftRegisters),
+					&(smu_data->soft_regs_start), 0x40000);
+
+	result = ellesmere_request_smu_load_fw(smumgr);
+
+	return result;
+}
+
+static int ellesmere_smu_init(struct pp_smumgr *smumgr)
+{
+	struct ellesmere_smumgr *smu_data;
+	uint8_t *internal_buf;
+	uint64_t mc_addr = 0;
+	/* Allocate memory for backend private data */
+	smu_data = (struct ellesmere_smumgr *)(smumgr->backend);
+	smu_data->header_buffer.data_size =
+		((sizeof(struct SMU_DRAMData_TOC) / 4096) + 1) * 4096;
+	smu_data->smu_buffer.data_size = 200*4096;
+	smu_data->avfs.avfs_btc_status = AVFS_BTC_NOTSUPPORTED;
+/* Allocate FW image data structure and header buffer and
+ * send the header buffer address to SMU */
+	smu_allocate_memory(smumgr->device,
+		smu_data->header_buffer.data_size,
+		CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB,
+		PAGE_SIZE,
+		&mc_addr,
+		&smu_data->header_buffer.kaddr,
+		&smu_data->header_buffer.handle);
+
+	smu_data->header = smu_data->header_buffer.kaddr;
+	smu_data->header_buffer.mc_addr_high = smu_upper_32_bits(mc_addr);
+	smu_data->header_buffer.mc_addr_low = smu_lower_32_bits(mc_addr);
+
+	PP_ASSERT_WITH_CODE((NULL != smu_data->header),
+		"Out of memory.",
+		kfree(smumgr->backend);
+		cgs_free_gpu_mem(smumgr->device,
+		(cgs_handle_t)smu_data->header_buffer.handle);
+		return -1);
+
+/* Allocate buffer for SMU internal buffer and send the address to SMU.
+ * Iceland SMU does not need internal buffer.*/
+	smu_allocate_memory(smumgr->device,
+		smu_data->smu_buffer.data_size,
+		CGS_GPU_MEM_TYPE__VISIBLE_CONTIG_FB,
+		PAGE_SIZE,
+		&mc_addr,
+		&smu_data->smu_buffer.kaddr,
+		&smu_data->smu_buffer.handle);
+
+	internal_buf = smu_data->smu_buffer.kaddr;
+	smu_data->smu_buffer.mc_addr_high = smu_upper_32_bits(mc_addr);
+	smu_data->smu_buffer.mc_addr_low = smu_lower_32_bits(mc_addr);
+
+	PP_ASSERT_WITH_CODE((NULL != internal_buf),
+		"Out of memory.",
+		kfree(smumgr->backend);
+		cgs_free_gpu_mem(smumgr->device,
+		(cgs_handle_t)smu_data->smu_buffer.handle);
+		return -1;);
+
+	return 0;
+}
+
+static const struct pp_smumgr_func ellsemere_smu_funcs = {
+	.smu_init = ellesmere_smu_init,
+	.smu_fini = ellesmere_smu_fini,
+	.start_smu = ellesmere_start_smu,
+	.check_fw_load_finish = ellesmere_check_fw_load_finish,
+	.request_smu_load_fw = ellesmere_reload_firmware,
+	.request_smu_load_specific_fw = NULL,
+	.send_msg_to_smc = ellesmere_send_msg_to_smc,
+	.send_msg_to_smc_with_parameter = ellesmere_send_msg_to_smc_with_parameter,
+	.download_pptable_settings = NULL,
+	.upload_pptable_settings = NULL,
+};
+
+int ellesmere_smum_init(struct pp_smumgr *smumgr)
+{
+	struct ellesmere_smumgr *ellesmere_smu = NULL;
+
+	ellesmere_smu = kzalloc(sizeof(struct ellesmere_smumgr), GFP_KERNEL);
+
+	if (ellesmere_smu == NULL)
+		return -1;
+
+	smumgr->backend = ellesmere_smu;
+	smumgr->smumgr_funcs = &ellsemere_smu_funcs;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.h b/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.h
new file mode 100644
index 000000000000..3712b3278b68
--- /dev/null
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/ellesmere_smumgr.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2015 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.
+ *
+ */
+
+#ifndef _ELLESMERE_SMUMANAGER_H
+#define _ELLESMERE_SMUMANAGER_H
+
+#include <ellesmere_ppsmc.h>
+#include <pp_endian.h>
+
+struct ellesmere_avfs {
+	enum AVFS_BTC_STATUS avfs_btc_status;
+	uint32_t           avfs_btc_param;
+};
+
+struct ellesmere_buffer_entry {
+	uint32_t data_size;
+	uint32_t mc_addr_low;
+	uint32_t mc_addr_high;
+	void *kaddr;
+	unsigned long  handle;
+};
+
+struct ellesmere_smumgr {
+	uint8_t *header;
+	uint8_t *mec_image;
+	struct ellesmere_buffer_entry smu_buffer;
+	struct ellesmere_buffer_entry header_buffer;
+	uint32_t soft_regs_start;
+	uint8_t *read_rrm_straps;
+	uint32_t read_drm_straps_mc_address_high;
+	uint32_t read_drm_straps_mc_address_low;
+	uint32_t acpi_optimization;
+	bool post_initial_boot;
+	struct ellesmere_avfs  avfs;
+};
+
+
+int ellesmere_smum_init(struct pp_smumgr *smumgr);
+
+int ellesmere_read_smc_sram_dword(struct pp_smumgr *smumgr, uint32_t smc_addr, uint32_t *value, uint32_t limit);
+int ellesmere_write_smc_sram_dword(struct pp_smumgr *smumgr, uint32_t smc_addr, uint32_t value, uint32_t limit);
+int ellesmere_copy_bytes_to_smc(struct pp_smumgr *smumgr, uint32_t smc_start_address,
+				const uint8_t *src, uint32_t byte_count, uint32_t limit);
+
+#endif
+
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/smumgr.c
index 063ae71c9830..06bbe90e8ff6 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/smumgr.c
@@ -30,6 +30,7 @@
 #include "cz_smumgr.h"
 #include "tonga_smumgr.h"
 #include "fiji_smumgr.h"
+#include "ellesmere_smumgr.h"
 
 int smum_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 {
@@ -62,6 +63,10 @@ int smum_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 		case CHIP_FIJI:
 			fiji_smum_init(smumgr);
 			break;
+		case CHIP_BAFFIN:
+		case CHIP_ELLESMERE:
+			ellesmere_smum_init(smumgr);
+			break;
 		default:
 			return -EINVAL;
 		}