drm/amd/powerplay: add Carrizo dpm support

This patch enables basic DPM support for Carrizo.
DPM handles dynamic clock and voltage scaling.

v3: delete peci sub-module
v2: use cgs interface directly
    correct define SMU_EnabledFeatureScoreboard_SclkDpmOn
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Signed-off-by: NJammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/Makefile

@@ -3,7 +3,7 @@
 # It provides the hardware management services for the driver.
 
 HARDWARE_MGR = hwmgr.o processpptables.o functiontables.o \
-	       hardwaremanager.o pp_acpi.o
+	       hardwaremanager.o pp_acpi.o cz_hwmgr.o
 
 AMD_PP_HWMGR = $(addprefix $(AMD_PP_PATH)/hwmgr/,$(HARDWARE_MGR))
 

drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.h

+/*
+ * 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 _CZ_HWMGR_H_
+#define _CZ_HWMGR_H_
+
+#include "cgs_common.h"
+
+#define CZ_NUM_NBPSTATES               4
+#define CZ_NUM_NBPMEMORYCLOCK          2
+#define MAX_DISPLAY_CLOCK_LEVEL        8
+#define CZ_AT_DFLT                     30
+#define CZ_MAX_HARDWARE_POWERLEVELS    8
+#define PPCZ_VOTINGRIGHTSCLIENTS_DFLT0   0x3FFFC102
+
+/* Carrizo device IDs */
+#define DEVICE_ID_CZ_9870             0x9870
+#define DEVICE_ID_CZ_9874             0x9874
+#define DEVICE_ID_CZ_9875             0x9875
+#define DEVICE_ID_CZ_9876             0x9876
+#define DEVICE_ID_CZ_9877             0x9877
+
+#define PHMCZ_WRITE_SMC_REGISTER(device, reg, value)                            \
+		cgs_write_ind_register(device, CGS_IND_REG__SMC, ix##reg, value)
+
+struct cz_dpm_entry {
+	uint32_t soft_min_clk;
+	uint32_t hard_min_clk;
+	uint32_t soft_max_clk;
+	uint32_t hard_max_clk;
+};
+
+struct cz_sys_info {
+	uint32_t bootup_uma_clock;
+	uint32_t bootup_engine_clock;
+	uint32_t dentist_vco_freq;
+	uint32_t nb_dpm_enable;
+	uint32_t nbp_memory_clock[CZ_NUM_NBPMEMORYCLOCK];
+	uint32_t nbp_n_clock[CZ_NUM_NBPSTATES];
+	uint16_t nbp_voltage_index[CZ_NUM_NBPSTATES];
+	uint32_t display_clock[MAX_DISPLAY_CLOCK_LEVEL];
+	uint16_t bootup_nb_voltage_index;
+	uint8_t htc_tmp_lmt;
+	uint8_t htc_hyst_lmt;
+	uint32_t system_config;
+	uint32_t uma_channel_number;
+};
+
+#define MAX_DISPLAYPHY_IDS			0x8
+#define DISPLAYPHY_LANEMASK			0xF
+#define UNKNOWN_TRANSMITTER_PHY_ID		(-1)
+
+#define DISPLAYPHY_PHYID_SHIFT			24
+#define DISPLAYPHY_LANESELECT_SHIFT		16
+
+#define DISPLAYPHY_RX_SELECT			0x1
+#define DISPLAYPHY_TX_SELECT			0x2
+#define DISPLAYPHY_CORE_SELECT			0x4
+
+#define DDI_POWERGATING_ARG(phyID, lanemask, rx, tx, core) \
+		(((uint32_t)(phyID))<<DISPLAYPHY_PHYID_SHIFT | \
+		((uint32_t)(lanemask))<<DISPLAYPHY_LANESELECT_SHIFT | \
+		((rx) ? DISPLAYPHY_RX_SELECT : 0) | \
+		((tx) ? DISPLAYPHY_TX_SELECT : 0) | \
+		((core) ? DISPLAYPHY_CORE_SELECT : 0))
+
+struct cz_display_phy_info_entry {
+	uint8_t phy_present;
+	uint8_t active_lane_mapping;
+	uint8_t display_config_type;
+	uint8_t active_number_of_lanes;
+};
+
+#define CZ_MAX_DISPLAYPHY_IDS			10
+
+struct cz_display_phy_info {
+	bool display_phy_access_initialized;
+	struct cz_display_phy_info_entry entries[CZ_MAX_DISPLAYPHY_IDS];
+};
+
+struct cz_power_level {
+	uint32_t engineClock;
+	uint8_t vddcIndex;
+	uint8_t dsDividerIndex;
+	uint8_t ssDividerIndex;
+	uint8_t allowGnbSlow;
+	uint8_t forceNBPstate;
+	uint8_t display_wm;
+	uint8_t vce_wm;
+	uint8_t numSIMDToPowerDown;
+	uint8_t hysteresis_up;
+	uint8_t rsv[3];
+};
+
+struct cz_uvd_clocks {
+	uint32_t vclk;
+	uint32_t dclk;
+	uint32_t vclk_low_divider;
+	uint32_t vclk_high_divider;
+	uint32_t dclk_low_divider;
+	uint32_t dclk_high_divider;
+};
+
+enum cz_pstate_previous_action {
+	DO_NOTHING = 1,
+	FORCE_HIGH,
+	CANCEL_FORCE_HIGH
+};
+
+struct pp_disable_nb_ps_flags {
+	union {
+		struct {
+			uint32_t entry : 1;
+			uint32_t display : 1;
+			uint32_t driver: 1;
+			uint32_t vce : 1;
+			uint32_t uvd : 1;
+			uint32_t acp : 1;
+			uint32_t reserved: 26;
+		} bits;
+		uint32_t u32All;
+	};
+};
+
+struct cz_power_state {
+	unsigned int magic;
+	uint32_t level;
+	struct cz_uvd_clocks uvd_clocks;
+	uint32_t evclk;
+	uint32_t ecclk;
+	uint32_t samclk;
+	uint32_t acpclk;
+	bool need_dfs_bypass;
+	uint32_t nbps_flags;
+	uint32_t bapm_flags;
+	uint8_t dpm_0_pg_nb_ps_low;
+	uint8_t dpm_0_pg_nb_ps_high;
+	uint8_t dpm_x_nb_ps_low;
+	uint8_t dpm_x_nb_ps_high;
+	enum cz_pstate_previous_action action;
+	struct cz_power_level levels[CZ_MAX_HARDWARE_POWERLEVELS];
+	struct pp_disable_nb_ps_flags disable_nb_ps_flag;
+};
+
+#define DPMFlags_SCLK_Enabled			0x00000001
+#define DPMFlags_UVD_Enabled			0x00000002
+#define DPMFlags_VCE_Enabled			0x00000004
+#define DPMFlags_ACP_Enabled			0x00000008
+#define DPMFlags_ForceHighestValid		0x40000000
+#define DPMFlags_Debug				0x80000000
+
+#define SMU_EnabledFeatureScoreboard_AcpDpmOn   0x00000001 /* bit 0 */
+#define SMU_EnabledFeatureScoreboard_SclkDpmOn    0x00200000
+#define SMU_EnabledFeatureScoreboard_UvdDpmOn   0x00800000 /* bit 23 */
+#define SMU_EnabledFeatureScoreboard_VceDpmOn   0x01000000 /* bit 24 */
+
+struct cz_hwmgr {
+	uint32_t activity_target[CZ_MAX_HARDWARE_POWERLEVELS];
+	uint32_t dpm_interval;
+
+	uint32_t voltage_drop_threshold;
+
+	uint32_t voting_rights_clients;
+
+	uint32_t disable_driver_thermal_policy;
+
+	uint32_t static_screen_threshold;
+
+	uint32_t gfx_power_gating_threshold;
+
+	uint32_t activity_hysteresis;
+	uint32_t bootup_sclk_divider;
+	uint32_t gfx_ramp_step;
+	uint32_t gfx_ramp_delay; /* in micro-seconds */
+
+	uint32_t thermal_auto_throttling_treshold;
+
+	struct cz_sys_info sys_info;
+
+	struct cz_power_level boot_power_level;
+	uint32_t mgcg_cgtt_local0;
+	uint32_t mgcg_cgtt_local1;
+
+	uint32_t tdr_clock; /* in 10khz unit */
+
+	uint32_t ddi_power_gating_disabled;
+	uint32_t disable_gfx_power_gating_in_uvd;
+	uint32_t disable_nb_ps3_in_battery;
+
+	uint32_t lock_nb_ps_in_uvd_play_back;
+
+	struct cz_display_phy_info display_phy_info;
+	uint32_t vce_slow_sclk_threshold; /* default 200mhz */
+	uint32_t dce_slow_sclk_threshold; /* default 300mhz */
+	uint32_t min_sclk_did;  /* minimum sclk divider */
+
+	bool disp_clk_bypass;
+	bool disp_clk_bypass_pending;
+	uint32_t bapm_enabled;
+	uint32_t clock_slow_down_freq;
+	uint32_t skip_clock_slow_down;
+	uint32_t enable_nb_ps_policy;
+	uint32_t voltage_drop_in_dce_power_gating;
+	uint32_t uvd_dpm_interval;
+	uint32_t override_dynamic_mgpg;
+	uint32_t lclk_deep_enabled;
+
+	uint32_t uvd_performance;
+
+	bool video_start;
+	bool battery_state;
+	uint32_t lowest_valid;
+	uint32_t highest_valid;
+	uint32_t high_voltage_threshold;
+	uint32_t is_nb_dpm_enabled;
+	uint32_t is_nb_dpm_enabled_by_driver;
+	uint32_t is_voltage_island_enabled;
+
+	bool pgacpinit;
+
+	uint8_t disp_config;
+
+	/* PowerTune */
+	uint32_t power_containment_features;
+	bool cac_enabled;
+	bool disable_uvd_power_tune_feature;
+	bool enable_ba_pm_feature;
+	bool enable_tdc_limit_feature;
+
+	uint32_t sram_end;
+	uint32_t dpm_table_start;
+	uint32_t soft_regs_start;
+
+	uint8_t uvd_level_count;
+	uint8_t vce_level_count;
+
+	uint8_t acp_level_count;
+	uint8_t samu_level_count;
+	uint32_t fps_high_threshold;
+	uint32_t fps_low_threshold;
+
+	uint32_t dpm_flags;
+	struct cz_dpm_entry sclk_dpm;
+	struct cz_dpm_entry uvd_dpm;
+	struct cz_dpm_entry vce_dpm;
+	struct cz_dpm_entry acp_dpm;
+
+	uint8_t uvd_boot_level;
+	uint8_t vce_boot_level;
+	uint8_t acp_boot_level;
+	uint8_t samu_boot_level;
+	uint8_t uvd_interval;
+	uint8_t vce_interval;
+	uint8_t acp_interval;
+	uint8_t samu_interval;
+
+	uint8_t graphics_interval;
+	uint8_t graphics_therm_throttle_enable;
+	uint8_t graphics_voltage_change_enable;
+
+	uint8_t graphics_clk_slow_enable;
+	uint8_t graphics_clk_slow_divider;
+
+	uint32_t display_cac;
+	uint32_t low_sclk_interrupt_threshold;
+
+	uint32_t dram_log_addr_h;
+	uint32_t dram_log_addr_l;
+	uint32_t dram_log_phy_addr_h;
+	uint32_t dram_log_phy_addr_l;
+	uint32_t dram_log_buff_size;
+
+	bool uvd_power_gated;
+	bool vce_power_gated;
+	bool samu_power_gated;
+	bool acp_power_gated;
+	bool acp_power_up_no_dsp;
+	uint32_t active_process_mask;
+
+	uint32_t max_sclk_level;
+	uint32_t num_of_clk_entries;
+	struct cz_power_state *cz_ps;
+};
+
+struct pp_hwmgr;
+
+int cz_hwmgr_init(struct pp_hwmgr *hwmgr);
+
+#endif /* _CZ_HWMGR_H_ */

drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c

@@ -27,8 +27,7 @@
 #include "cgs_common.h"
 #include "power_state.h"
 #include "hwmgr.h"
-
-
+#include "cz_hwmgr.h"
 
 int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 {
@@ -51,6 +50,9 @@ int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 	hwmgr->power_source = PP_PowerSource_AC;
 
 	switch (hwmgr->chip_family) {
+	case AMD_FAMILY_CZ:
+		cz_hwmgr_init(hwmgr);
+		break;
 	default:
 		return -EINVAL;
 	}