linux-nvgpu/drivers/gpu/nvgpu/gk20a/gk20a.h

/*
 * Copyright (c) 2011-2018, NVIDIA CORPORATION.  All rights reserved.
 *
 * GK20A Graphics
 *
 * 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 AUTHORS OR COPYRIGHT HOLDERS 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 GK20A_H
#define GK20A_H

struct gk20a;
struct fifo_gk20a;
struct channel_gk20a;
struct gr_gk20a;
struct sim_gk20a;
struct gk20a_ctxsw_ucode_segments;
struct gk20a_fecs_trace;
struct gk20a_ctxsw_trace;
struct acr_desc;
struct nvgpu_mem_alloc_tracker;
struct dbg_profiler_object_data;
struct ecc_gk20a;
struct gk20a_debug_output;
struct nvgpu_clk_pll_debug_data;
struct nvgpu_nvhost_dev;
struct nvgpu_cpu_time_correlation_sample;
struct nvgpu_mem_sgt;
struct nvgpu_warpstate;
#ifdef CONFIG_GK20A_CTXSW_TRACE
struct nvgpu_ctxsw_trace_filter;
#endif

#include <nvgpu/lock.h>
#include <nvgpu/thread.h>
#include <nvgpu/io.h>

#include <nvgpu/mm.h>
#include <nvgpu/as.h>
#include <nvgpu/log.h>
#include <nvgpu/pramin.h>
#include <nvgpu/acr/nvgpu_acr.h>
#include <nvgpu/kref.h>
#include <nvgpu/falcon.h>
#include <nvgpu/pmu.h>
#include <nvgpu/atomic.h>
#include <nvgpu/barrier.h>
#include <nvgpu/rwsem.h>
#include <nvgpu/clk_arb.h>

#include "clk_gk20a.h"
#include "ce2_gk20a.h"
#include "fifo_gk20a.h"
#include "tsg_gk20a.h"
#include "gr_gk20a.h"
#include "sim_gk20a.h"
#include "pmu_gk20a.h"
#include "priv_ring_gk20a.h"
#include "therm_gk20a.h"
#include "clk/clk.h"
#include "perf/perf.h"
#include "pmgr/pmgr.h"
#include "therm/thrm.h"
#include "ecc_gk20a.h"

/* PTIMER_REF_FREQ_HZ corresponds to a period of 32 nanoseconds.
    32 ns is the resolution of ptimer. */
#define PTIMER_REF_FREQ_HZ                      31250000

#ifdef CONFIG_DEBUG_FS
struct railgate_stats {
	unsigned long last_rail_gate_start;
	unsigned long last_rail_gate_complete;
	unsigned long last_rail_ungate_start;
	unsigned long last_rail_ungate_complete;
	unsigned long total_rail_gate_time_ms;
	unsigned long total_rail_ungate_time_ms;
	unsigned long railgating_cycle_count;
};
#endif

enum gk20a_cbc_op {
	gk20a_cbc_op_clear,
	gk20a_cbc_op_clean,
	gk20a_cbc_op_invalidate,
};

#define MC_INTR_UNIT_DISABLE	false
#define MC_INTR_UNIT_ENABLE		true

#define GPU_LIT_NUM_GPCS	0
#define GPU_LIT_NUM_PES_PER_GPC 1
#define GPU_LIT_NUM_ZCULL_BANKS 2
#define GPU_LIT_NUM_TPC_PER_GPC 3
#define GPU_LIT_NUM_SM_PER_TPC  4
#define GPU_LIT_NUM_FBPS	5
#define GPU_LIT_GPC_BASE	6
#define GPU_LIT_GPC_STRIDE	7
#define GPU_LIT_GPC_SHARED_BASE 8
#define GPU_LIT_TPC_IN_GPC_BASE 9
#define GPU_LIT_TPC_IN_GPC_STRIDE 10
#define GPU_LIT_TPC_IN_GPC_SHARED_BASE 11
#define GPU_LIT_PPC_IN_GPC_BASE	12
#define GPU_LIT_PPC_IN_GPC_STRIDE 13
#define GPU_LIT_PPC_IN_GPC_SHARED_BASE 14
#define GPU_LIT_ROP_BASE	15
#define GPU_LIT_ROP_STRIDE	16
#define GPU_LIT_ROP_SHARED_BASE 17
#define GPU_LIT_HOST_NUM_ENGINES 18
#define GPU_LIT_HOST_NUM_PBDMA	19
#define GPU_LIT_LTC_STRIDE	20
#define GPU_LIT_LTS_STRIDE	21
#define GPU_LIT_NUM_FBPAS	22
#define GPU_LIT_FBPA_STRIDE	23
#define GPU_LIT_FBPA_BASE	24
#define GPU_LIT_FBPA_SHARED_BASE 25
#define GPU_LIT_SM_PRI_STRIDE	26
#define GPU_LIT_SMPC_PRI_BASE		27
#define GPU_LIT_SMPC_PRI_SHARED_BASE	28
#define GPU_LIT_SMPC_PRI_UNIQUE_BASE	29
#define GPU_LIT_SMPC_PRI_STRIDE		30
#define GPU_LIT_TWOD_CLASS	31
#define GPU_LIT_THREED_CLASS	32
#define GPU_LIT_COMPUTE_CLASS	33
#define GPU_LIT_GPFIFO_CLASS	34
#define GPU_LIT_I2M_CLASS	35
#define GPU_LIT_DMA_COPY_CLASS	36

#define nvgpu_get_litter_value(g, v) (g)->ops.get_litter_value((g), v)

enum nvgpu_unit;

enum nvgpu_flush_op;
/*
 * gpu_ops should only contain function pointers! Non-function pointer members
 * should go in struct gk20a or be implemented with the boolean flag API defined
 * in nvgpu/enabled.h
 */
struct gpu_ops {
	struct {
		int (*determine_L2_size_bytes)(struct gk20a *gk20a);
		int (*init_comptags)(struct gk20a *g, struct gr_gk20a *gr);
		int (*cbc_ctrl)(struct gk20a *g, enum gk20a_cbc_op op,
				u32 min, u32 max);
		void (*set_zbc_color_entry)(struct gk20a *g,
					    struct zbc_entry *color_val,
					    u32 index);
		void (*set_zbc_depth_entry)(struct gk20a *g,
					    struct zbc_entry *depth_val,
					    u32 index);
		void (*set_zbc_s_entry)(struct gk20a *g,
					    struct zbc_entry *s_val,
					    u32 index);
		void (*init_cbc)(struct gk20a *g, struct gr_gk20a *gr);
		void (*set_enabled)(struct gk20a *g, bool enabled);
		void (*init_fs_state)(struct gk20a *g);
		void (*isr)(struct gk20a *g);
		u32 (*cbc_fix_config)(struct gk20a *g, int base);
		void (*flush)(struct gk20a *g);
	} ltc;
	struct {
		void (*isr_stall)(struct gk20a *g, u32 inst_id, u32 pri_base);
		int (*isr_nonstall)(struct gk20a *g, u32 inst_id, u32 pri_base);
		u32 (*get_num_pce)(struct gk20a *g);
	} ce2;
	struct {
		u32 (*get_patch_slots)(struct gk20a *g);
		int (*init_fs_state)(struct gk20a *g);
		int (*init_preemption_state)(struct gk20a *g);
		void (*access_smpc_reg)(struct gk20a *g, u32 quad, u32 offset);
		void (*bundle_cb_defaults)(struct gk20a *g);
		void (*cb_size_default)(struct gk20a *g);
		int (*calc_global_ctx_buffer_size)(struct gk20a *g);
		void (*commit_global_attrib_cb)(struct gk20a *g,
						struct channel_ctx_gk20a *ch_ctx,
						u64 addr, bool patch);
		void (*commit_global_bundle_cb)(struct gk20a *g,
						struct channel_ctx_gk20a *ch_ctx,
						u64 addr, u64 size, bool patch);
		int (*commit_global_cb_manager)(struct gk20a *g,
						struct channel_gk20a *ch,
						bool patch);
		void (*commit_global_pagepool)(struct gk20a *g,
					       struct channel_ctx_gk20a *ch_ctx,
					       u64 addr, u32 size, bool patch);
		void (*init_gpc_mmu)(struct gk20a *g);
		int (*handle_sw_method)(struct gk20a *g, u32 addr,
					 u32 class_num, u32 offset, u32 data);
		void (*set_alpha_circular_buffer_size)(struct gk20a *g,
					               u32 data);
		void (*set_circular_buffer_size)(struct gk20a *g, u32 data);
		void (*set_bes_crop_debug3)(struct gk20a *g, u32 data);
		void (*enable_hww_exceptions)(struct gk20a *g);
		bool (*is_valid_class)(struct gk20a *g, u32 class_num);
		bool (*is_valid_gfx_class)(struct gk20a *g, u32 class_num);
		bool (*is_valid_compute_class)(struct gk20a *g, u32 class_num);
		void (*get_sm_dsm_perf_regs)(struct gk20a *g,
						  u32 *num_sm_dsm_perf_regs,
						  u32 **sm_dsm_perf_regs,
						  u32 *perf_register_stride);
		void (*get_sm_dsm_perf_ctrl_regs)(struct gk20a *g,
						  u32 *num_sm_dsm_perf_regs,
						  u32 **sm_dsm_perf_regs,
						  u32 *perf_register_stride);
		void (*get_ovr_perf_regs)(struct gk20a *g,
						  u32 *num_ovr_perf_regs,
						  u32 **ovr_perf_regsr);
		void (*set_hww_esr_report_mask)(struct gk20a *g);
		int (*setup_alpha_beta_tables)(struct gk20a *g,
					      struct gr_gk20a *gr);
		int (*falcon_load_ucode)(struct gk20a *g,
				u64 addr_base,
				struct gk20a_ctxsw_ucode_segments *segments,
				u32 reg_offset);
		int (*load_ctxsw_ucode)(struct gk20a *g);
		u32 (*get_gpc_tpc_mask)(struct gk20a *g, u32 gpc_index);
		void (*set_gpc_tpc_mask)(struct gk20a *g, u32 gpc_index);
		void (*free_channel_ctx)(struct channel_gk20a *c, bool is_tsg);
		int (*alloc_obj_ctx)(struct channel_gk20a  *c,
				     u32 class_num, u32 flags);
		int (*bind_ctxsw_zcull)(struct gk20a *g, struct gr_gk20a *gr,
				struct channel_gk20a *c, u64 zcull_va,
				u32 mode);
		int (*get_zcull_info)(struct gk20a *g, struct gr_gk20a *gr,
				struct gr_zcull_info *zcull_params);
		int (*decode_egpc_addr)(struct gk20a *g,
			u32 addr, int *addr_type,
			u32 *gpc_num, u32 *tpc_num, u32 *broadcast_flags);
		void (*egpc_etpc_priv_addr_table)(struct gk20a *g, u32 addr,
			u32 gpc, u32 broadcast_flags, u32 *priv_addr_table,
			u32 *priv_addr_table_index);
		bool (*is_tpc_addr)(struct gk20a *g, u32 addr);
		bool (*is_egpc_addr)(struct gk20a *g, u32 addr);
		bool (*is_etpc_addr)(struct gk20a *g, u32 addr);
		void (*get_egpc_etpc_num)(struct gk20a *g, u32 addr,
				u32 *gpc_num, u32 *tpc_num);
		u32 (*get_tpc_num)(struct gk20a *g, u32 addr);
		u32 (*get_egpc_base)(struct gk20a *g);
		bool (*is_ltcs_ltss_addr)(struct gk20a *g, u32 addr);
		bool (*is_ltcn_ltss_addr)(struct gk20a *g, u32 addr);
		bool (*get_lts_in_ltc_shared_base)(void);
		void (*split_lts_broadcast_addr)(struct gk20a *g, u32 addr,
					u32 *priv_addr_table,
					u32 *priv_addr_table_index);
		void (*split_ltc_broadcast_addr)(struct gk20a *g, u32 addr,
					u32 *priv_addr_table,
					u32 *priv_addr_table_index);
		void (*detect_sm_arch)(struct gk20a *g);
		int (*add_zbc_color)(struct gk20a *g, struct gr_gk20a *gr,
				  struct zbc_entry *color_val, u32 index);
		int (*add_zbc_depth)(struct gk20a *g, struct gr_gk20a *gr,
				  struct zbc_entry *depth_val, u32 index);
		int (*add_zbc_s)(struct gk20a *g, struct gr_gk20a *gr,
				  struct zbc_entry *s_val, u32 index);
		int (*zbc_set_table)(struct gk20a *g, struct gr_gk20a *gr,
				struct zbc_entry *zbc_val);
		int (*zbc_query_table)(struct gk20a *g, struct gr_gk20a *gr,
				struct zbc_query_params *query_params);
		int (*zbc_s_query_table)(struct gk20a *g, struct gr_gk20a *gr,
				struct zbc_query_params *query_params);
		int (*load_zbc_s_default_tbl)(struct gk20a *g,
					 struct gr_gk20a *gr);
		int (*load_zbc_s_tbl)(struct gk20a *g,
					 struct gr_gk20a *gr);
		void (*pmu_save_zbc)(struct gk20a *g, u32 entries);
		int (*add_zbc)(struct gk20a *g, struct gr_gk20a *gr,
				struct zbc_entry *zbc_val);
		bool (*add_zbc_type_s)(struct gk20a *g, struct gr_gk20a *gr,
				struct zbc_entry *zbc_val, int *ret_val);
		u32 (*pagepool_default_size)(struct gk20a *g);
		int (*init_ctx_state)(struct gk20a *g);
		int (*alloc_gr_ctx)(struct gk20a *g,
			  struct gr_ctx_desc **__gr_ctx, struct vm_gk20a *vm,
			  u32 class, u32 padding);
		void (*free_gr_ctx)(struct gk20a *g,
			  struct vm_gk20a *vm,
			  struct gr_ctx_desc *gr_ctx);
		void (*update_ctxsw_preemption_mode)(struct gk20a *g,
				struct channel_ctx_gk20a *ch_ctx,
				struct nvgpu_mem *mem);
		int (*update_smpc_ctxsw_mode)(struct gk20a *g,
				struct channel_gk20a *c,
				bool enable);
		int (*update_hwpm_ctxsw_mode)(struct gk20a *g,
				struct channel_gk20a *c,
				bool enable);
		int (*dump_gr_regs)(struct gk20a *g,
				struct gk20a_debug_output *o);
		int (*update_pc_sampling)(struct channel_gk20a *ch,
					   bool enable);
		u32 (*get_max_fbps_count)(struct gk20a *g);
		u32 (*get_fbp_en_mask)(struct gk20a *g);
		u32 (*get_max_ltc_per_fbp)(struct gk20a *g);
		u32 (*get_max_lts_per_ltc)(struct gk20a *g);
		u32* (*get_rop_l2_en_mask)(struct gk20a *g);
		void (*init_sm_dsm_reg_info)(void);
		void (*init_ovr_sm_dsm_perf)(void);
		int (*wait_empty)(struct gk20a *g, unsigned long duration_ms,
				  u32 expect_delay);
		void (*init_cyclestats)(struct gk20a *g);
		void (*enable_cde_in_fecs)(struct gk20a *g,
				struct nvgpu_mem *mem);
		int (*set_sm_debug_mode)(struct gk20a *g, struct channel_gk20a *ch,
					u64 sms, bool enable);
		void (*bpt_reg_info)(struct gk20a *g,
				struct nvgpu_warpstate *w_state);
		void (*get_access_map)(struct gk20a *g,
				      u32 **whitelist, int *num_entries);
		int (*handle_fecs_error)(struct gk20a *g,
				struct channel_gk20a *ch,
				struct gr_gk20a_isr_data *isr_data);
		int (*pre_process_sm_exception)(struct gk20a *g,
			u32 gpc, u32 tpc, u32 sm, u32 global_esr, u32 warp_esr,
			bool sm_debugger_attached,
			struct channel_gk20a *fault_ch,
			bool *early_exit, bool *ignore_debugger);
		u32 (*get_sm_hww_warp_esr)(struct gk20a *g,
						u32 gpc, u32 tpc, u32 sm);
		u32 (*get_sm_hww_global_esr)(struct gk20a *g,
						u32 gpc, u32 tpc, u32 sm);
		u32 (*get_sm_no_lock_down_hww_global_esr_mask)(struct gk20a *g);
		int  (*lock_down_sm)(struct gk20a *g, u32 gpc, u32 tpc, u32 sm,
				u32 global_esr_mask, bool check_errors);
		int  (*wait_for_sm_lock_down)(struct gk20a *g, u32 gpc, u32 tpc,
				u32 sm, u32 global_esr_mask, bool check_errors);
		void (*clear_sm_hww)(struct gk20a *g, u32 gpc, u32 tpc, u32 sm,
					 u32 global_esr);
		void (*get_esr_sm_sel)(struct gk20a *g, u32 gpc, u32 tpc,
					 u32 *esr_sm_sel);
		int (*handle_tpc_sm_ecc_exception)(struct gk20a *g,
			u32 gpc, u32 tpc,
			bool *post_event, struct channel_gk20a *fault_ch,
			u32 *hww_global_esr);
		int (*handle_sm_exception)(struct gk20a *g,
			u32 gpc, u32 tpc, u32 sm,
			bool *post_event, struct channel_gk20a *fault_ch,
			u32 *hww_global_esr);
		int (*handle_gcc_exception)(struct gk20a *g, u32 gpc, u32 tpc,
				bool *post_event, struct channel_gk20a *fault_ch,
				u32 *hww_global_esr);
		int (*handle_tex_exception)(struct gk20a *g, u32 gpc, u32 tpc,
						bool *post_event);
		int (*handle_tpc_mpc_exception)(struct gk20a *g,
					u32 gpc, u32 tpc, bool *post_event);
		int (*handle_gpc_gpccs_exception)(struct gk20a *g, u32 gpc,
						u32 gpc_exception);
		int (*handle_gpc_gpcmmu_exception)(struct gk20a *g, u32 gpc,
						u32 gpc_exception);
		void (*enable_gpc_exceptions)(struct gk20a *g);
		void (*enable_exceptions)(struct gk20a *g);
		void (*create_gr_sysfs)(struct gk20a *g);
		u32 (*get_lrf_tex_ltc_dram_override)(struct gk20a *g);
		int (*record_sm_error_state)(struct gk20a *g,
				u32 gpc, u32 tpc);
		int (*update_sm_error_state)(struct gk20a *g,
				struct channel_gk20a *ch, u32 sm_id,
				struct nvgpu_gr_sm_error_state *sm_error_state);
		int (*clear_sm_error_state)(struct gk20a *g,
				struct channel_gk20a *ch, u32 sm_id);
		int (*suspend_contexts)(struct gk20a *g,
				struct dbg_session_gk20a *dbg_s,
				int *ctx_resident_ch_fd);
		int (*resume_contexts)(struct gk20a *g,
				struct dbg_session_gk20a *dbg_s,
				int *ctx_resident_ch_fd);
		int (*set_preemption_mode)(struct channel_gk20a *ch,
				u32 graphics_preempt_mode,
				u32 compute_preempt_mode);
		int (*get_preemption_mode_flags)(struct gk20a *g,
		       struct nvgpu_preemption_modes_rec *preemption_modes_rec);
		int (*set_ctxsw_preemption_mode)(struct gk20a *g,
				struct gr_ctx_desc *gr_ctx,
				struct vm_gk20a *vm, u32 class,
				u32 graphics_preempt_mode,
				u32 compute_preempt_mode);
		int (*set_boosted_ctx)(struct channel_gk20a *ch, bool boost);
		void (*update_boosted_ctx)(struct gk20a *g,
					   struct nvgpu_mem *mem,
					   struct gr_ctx_desc *gr_ctx);
		int (*init_sm_id_table)(struct gk20a *g);
		int (*load_smid_config)(struct gk20a *g);
		void (*program_sm_id_numbering)(struct gk20a *g,
						u32 gpc, u32 tpc, u32 smid);
		void (*program_active_tpc_counts)(struct gk20a *g, u32 gpc);
		int  (*setup_rop_mapping)(struct gk20a *g, struct gr_gk20a *gr);
		int (*init_sw_veid_bundle)(struct gk20a *g);
		void (*program_zcull_mapping)(struct gk20a *g,
				u32 zcull_alloc_num, u32 *zcull_map_tiles);
		int (*commit_global_timeslice)(struct gk20a *g,
					struct channel_gk20a *c);
		int (*commit_inst)(struct channel_gk20a *c, u64 gpu_va);
		void (*write_zcull_ptr)(struct gk20a *g,
					struct nvgpu_mem *mem, u64 gpu_va);
		void (*write_pm_ptr)(struct gk20a *g,
					struct nvgpu_mem *mem, u64 gpu_va);
		void (*set_preemption_buffer_va)(struct gk20a *g,
					struct nvgpu_mem *mem, u64 gpu_va);
		void (*init_elcg_mode)(struct gk20a *g, u32 mode, u32 engine);
		void (*load_tpc_mask)(struct gk20a *g);
		int (*inval_icache)(struct gk20a *g, struct channel_gk20a *ch);
		int (*trigger_suspend)(struct gk20a *g);
		int (*wait_for_pause)(struct gk20a *g, struct nvgpu_warpstate *w_state);
		int (*resume_from_pause)(struct gk20a *g);
		int (*clear_sm_errors)(struct gk20a *g);
		u32 (*tpc_enabled_exceptions)(struct gk20a *g);
		int (*set_czf_bypass)(struct gk20a *g,
				      struct channel_gk20a *ch);
		void (*init_czf_bypass)(struct gk20a *g);
		bool (*sm_debugger_attached)(struct gk20a *g);
		void (*suspend_single_sm)(struct gk20a *g,
				u32 gpc, u32 tpc, u32 sm,
				u32 global_esr_mask, bool check_errors);
		void (*suspend_all_sms)(struct gk20a *g,
				u32 global_esr_mask, bool check_errors);
		void (*resume_single_sm)(struct gk20a *g,
				u32 gpc, u32 tpc, u32 sm);
		void (*resume_all_sms)(struct gk20a *g);
		void (*disable_rd_coalesce)(struct gk20a *g);
		void (*init_ctxsw_hdr_data)(struct gk20a *g,
					struct nvgpu_mem *mem);
		void (*init_gfxp_wfi_timeout_count)(struct gk20a *g);
		unsigned long (*get_max_gfxp_wfi_timeout_count)
					(struct gk20a *g);
		void (*ecc_init_scrub_reg)(struct gk20a *g);
		u32 (*get_gpcs_swdx_dss_zbc_c_format_reg)(struct gk20a *g);
		u32 (*get_gpcs_swdx_dss_zbc_z_format_reg)(struct gk20a *g);
		void (*dump_ctxsw_stats)(struct gk20a *g, struct vm_gk20a *vm,
					 struct gr_ctx_desc *gr_ctx);
	} gr;
	struct {
		void (*init_hw)(struct gk20a *g);
		void (*init_cbc)(struct gk20a *g, struct gr_gk20a *gr);
		void (*init_fs_state)(struct gk20a *g);
		void (*reset)(struct gk20a *g);
		void (*init_uncompressed_kind_map)(struct gk20a *g);
		void (*init_kind_attr)(struct gk20a *g);
		void (*set_mmu_page_size)(struct gk20a *g);
		bool (*set_use_full_comp_tag_line)(struct gk20a *g);

		/*
		 * Compression tag line coverage. When mapping a compressible
		 * buffer, ctagline is increased when the virtual address
		 * crosses over the compression page boundary.
		 */
		unsigned int (*compression_page_size)(struct gk20a *g);

		/*
		 * Minimum page size that can be used for compressible kinds.
		 */
		unsigned int (*compressible_page_size)(struct gk20a *g);

		/*
		 * Compressible kind mappings: Mask for the virtual and physical
		 * address bits that must match.
		 */
		u32 (*compression_align_mask)(struct gk20a *g);

		void (*dump_vpr_wpr_info)(struct gk20a *g);
		int (*vpr_info_fetch)(struct gk20a *g);
		void (*read_wpr_info)(struct gk20a *g,
				struct wpr_carveout_info *inf);
		bool (*is_debug_mode_enabled)(struct gk20a *g);
		void (*set_debug_mode)(struct gk20a *g, bool enable);
		void (*tlb_invalidate)(struct gk20a *g, struct nvgpu_mem *pdb);
		void (*hub_isr)(struct gk20a *g);
		int (*mem_unlock)(struct gk20a *g);
	} fb;
	struct {
		void (*slcg_bus_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_ce2_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_chiplet_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_ctxsw_firmware_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_fb_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_fifo_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_gr_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_ltc_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_perf_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_priring_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_pmu_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_therm_load_gating_prod)(struct gk20a *g, bool prod);
		void (*slcg_xbar_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_bus_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_ce_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_ctxsw_firmware_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_fb_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_fifo_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_gr_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_ltc_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_pwr_csb_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_pmu_load_gating_prod)(struct gk20a *g, bool prod);
		void (*blcg_xbar_load_gating_prod)(struct gk20a *g, bool prod);
		void (*pg_gr_load_gating_prod)(struct gk20a *g, bool prod);
	} clock_gating;
	struct {
		int (*init_fifo_setup_hw)(struct gk20a *g);
		void (*bind_channel)(struct channel_gk20a *ch_gk20a);
		void (*unbind_channel)(struct channel_gk20a *ch_gk20a);
		void (*disable_channel)(struct channel_gk20a *ch);
		void (*enable_channel)(struct channel_gk20a *ch);
		int (*alloc_inst)(struct gk20a *g, struct channel_gk20a *ch);
		void (*free_inst)(struct gk20a *g, struct channel_gk20a *ch);
		int (*setup_ramfc)(struct channel_gk20a *c, u64 gpfifo_base,
				u32 gpfifo_entries,
				unsigned long acquire_timeout,
				u32 flags);
		int (*resetup_ramfc)(struct channel_gk20a *c);
		int (*preempt_channel)(struct gk20a *g, u32 chid);
		int (*preempt_tsg)(struct gk20a *g, u32 tsgid);
		int (*enable_tsg)(struct tsg_gk20a *tsg);
		int (*disable_tsg)(struct tsg_gk20a *tsg);
		int (*tsg_verify_channel_status)(struct channel_gk20a *ch);
		void (*tsg_verify_status_ctx_reload)(struct channel_gk20a *ch);
		void (*tsg_verify_status_faulted)(struct channel_gk20a *ch);
		int (*reschedule_runlist)(struct gk20a *g, u32 runlist_id);
		int (*update_runlist)(struct gk20a *g, u32 runlist_id,
				u32 chid, bool add,
				bool wait_for_finish);
		void (*trigger_mmu_fault)(struct gk20a *g,
				unsigned long engine_ids);
		void (*get_mmu_fault_info)(struct gk20a *g, u32 mmu_fault_id,
			struct mmu_fault_info *mmfault);
		void (*apply_pb_timeout)(struct gk20a *g);
		void (*apply_ctxsw_timeout_intr)(struct gk20a *g);
		int (*wait_engine_idle)(struct gk20a *g);
		u32 (*get_num_fifos)(struct gk20a *g);
		u32 (*get_pbdma_signature)(struct gk20a *g);
		int (*set_runlist_interleave)(struct gk20a *g, u32 id,
					u32 runlist_id,
					u32 new_level);
		int (*tsg_set_timeslice)(struct tsg_gk20a *tsg, u32 timeslice);
		u32 (*default_timeslice_us)(struct gk20a *);
		int (*force_reset_ch)(struct channel_gk20a *ch,
					u32 err_code, bool verbose);
		int (*engine_enum_from_type)(struct gk20a *g, u32 engine_type,
					u32 *inst_id);
		void (*device_info_data_parse)(struct gk20a *g,
					u32 table_entry, u32 *inst_id,
					u32 *pri_base, u32 *fault_id);
		u32 (*device_info_fault_id)(u32 table_entry);
		int (*tsg_bind_channel)(struct tsg_gk20a *tsg,
				struct channel_gk20a *ch);
		int (*tsg_unbind_channel)(struct channel_gk20a *ch);
		int (*tsg_open)(struct tsg_gk20a *tsg);
		void (*tsg_release)(struct tsg_gk20a *tsg);
		u32 (*eng_runlist_base_size)(void);
		int (*init_engine_info)(struct fifo_gk20a *f);
		u32 (*runlist_entry_size)(void);
		void (*get_tsg_runlist_entry)(struct tsg_gk20a *tsg,
					u32 *runlist);
		void (*get_ch_runlist_entry)(struct channel_gk20a *ch,
					u32 *runlist);
		u32 (*userd_gp_get)(struct gk20a *g, struct channel_gk20a *ch);
		void (*userd_gp_put)(struct gk20a *g, struct channel_gk20a *ch);
		u64 (*userd_pb_get)(struct gk20a *g, struct channel_gk20a *ch);
		void (*free_channel_ctx_header)(struct channel_gk20a *ch);
		bool (*is_fault_engine_subid_gpc)(struct gk20a *g,
					 u32 engine_subid);
		void (*dump_pbdma_status)(struct gk20a *g,
				struct gk20a_debug_output *o);
		void (*dump_eng_status)(struct gk20a *g,
				struct gk20a_debug_output *o);
		void (*dump_channel_status_ramfc)(struct gk20a *g,
				struct gk20a_debug_output *o, u32 chid,
				struct ch_state *ch_state);
		u32 (*intr_0_error_mask)(struct gk20a *g);
		int (*is_preempt_pending)(struct gk20a *g, u32 id,
			unsigned int id_type, unsigned int timeout_rc_type);
		int (*preempt_ch_tsg)(struct gk20a *g, u32 id,
			unsigned int id_type, unsigned int timeout_rc_type);
		void (*init_pbdma_intr_descs)(struct fifo_gk20a *f);
		int (*reset_enable_hw)(struct gk20a *g);
		int (*setup_userd)(struct channel_gk20a *c);
		u32 (*pbdma_acquire_val)(u64 timeout);
		void (*teardown_ch_tsg)(struct gk20a *g, u32 act_eng_bitmask,
			u32 id, unsigned int id_type, unsigned int rc_type,
			 struct mmu_fault_info *mmfault);
		bool (*handle_sched_error)(struct gk20a *g);
		bool (*handle_ctxsw_timeout)(struct gk20a *g, u32 fifo_intr);
		unsigned int (*handle_pbdma_intr_0)(struct gk20a *g,
					u32 pbdma_id, u32 pbdma_intr_0,
					u32 *handled, u32 *error_notifier);
		unsigned int (*handle_pbdma_intr_1)(struct gk20a *g,
					u32 pbdma_id, u32 pbdma_intr_1,
					u32 *handled, u32 *error_notifier);
		void (*init_eng_method_buffers)(struct gk20a *g,
						struct tsg_gk20a *tsg);
		void (*deinit_eng_method_buffers)(struct gk20a *g,
						struct tsg_gk20a *tsg);
		u32 (*get_preempt_timeout)(struct gk20a *g);
#ifdef CONFIG_TEGRA_GK20A_NVHOST
		int (*alloc_syncpt_buf)(struct channel_gk20a *c,
				u32 syncpt_id, struct nvgpu_mem *syncpt_buf);
		void (*free_syncpt_buf)(struct channel_gk20a *c,
				struct nvgpu_mem *syncpt_buf);
		void (*add_syncpt_wait_cmd)(struct gk20a *g,
					struct priv_cmd_entry *cmd, u32 off,
					u32 id, u32 thresh, u64 gpu_va);
		u32 (*get_syncpt_wait_cmd_size)(void);
		void (*add_syncpt_incr_cmd)(struct gk20a *g,
			bool wfi_cmd, struct priv_cmd_entry *cmd,
			u32 id, u64 gpu_va);
		u32 (*get_syncpt_incr_cmd_size)(bool wfi_cmd);
#endif
	} fifo;
	struct pmu_v {
		u32 (*get_pmu_cmdline_args_size)(struct nvgpu_pmu *pmu);
		void (*set_pmu_cmdline_args_cpu_freq)(struct nvgpu_pmu *pmu,
			u32 freq);
		void (*set_pmu_cmdline_args_trace_size)(struct nvgpu_pmu *pmu,
			u32 size);
		void (*set_pmu_cmdline_args_trace_dma_base)(
				struct nvgpu_pmu *pmu);
		void (*set_pmu_cmdline_args_trace_dma_idx)(
			struct nvgpu_pmu *pmu, u32 idx);
		void * (*get_pmu_cmdline_args_ptr)(struct nvgpu_pmu *pmu);
		u32 (*get_pmu_allocation_struct_size)(struct nvgpu_pmu *pmu);
		void (*set_pmu_allocation_ptr)(struct nvgpu_pmu *pmu,
				void **pmu_alloc_ptr, void *assign_ptr);
		void (*pmu_allocation_set_dmem_size)(struct nvgpu_pmu *pmu,
				void *pmu_alloc_ptr, u16 size);
		u16 (*pmu_allocation_get_dmem_size)(struct nvgpu_pmu *pmu,
				void *pmu_alloc_ptr);
		u32 (*pmu_allocation_get_dmem_offset)(struct nvgpu_pmu *pmu,
				void *pmu_alloc_ptr);
		u32 * (*pmu_allocation_get_dmem_offset_addr)(
				struct nvgpu_pmu *pmu, void *pmu_alloc_ptr);
		void (*pmu_allocation_set_dmem_offset)(struct nvgpu_pmu *pmu,
				void *pmu_alloc_ptr, u32 offset);
		void * (*pmu_allocation_get_fb_addr)(
				struct nvgpu_pmu *pmu, void *pmu_alloc_ptr);
		u32 (*pmu_allocation_get_fb_size)(
				struct nvgpu_pmu *pmu, void *pmu_alloc_ptr);
		void (*get_pmu_init_msg_pmu_queue_params)(
				struct pmu_queue *queue, u32 id,
				void *pmu_init_msg);
		void *(*get_pmu_msg_pmu_init_msg_ptr)(
				struct pmu_init_msg *init);
		u16 (*get_pmu_init_msg_pmu_sw_mg_off)(
			union pmu_init_msg_pmu *init_msg);
		u16 (*get_pmu_init_msg_pmu_sw_mg_size)(
			union pmu_init_msg_pmu *init_msg);
		u32 (*get_pmu_perfmon_cmd_start_size)(void);
		int (*get_perfmon_cmd_start_offsetofvar)(
				enum pmu_perfmon_cmd_start_fields field);
		void (*perfmon_start_set_cmd_type)(struct pmu_perfmon_cmd *pc,
				u8 value);
		void (*perfmon_start_set_group_id)(struct pmu_perfmon_cmd *pc,
				u8 value);
		void (*perfmon_start_set_state_id)(struct pmu_perfmon_cmd *pc,
				u8 value);
		void (*perfmon_start_set_flags)(struct pmu_perfmon_cmd *pc,
				u8 value);
		u8 (*perfmon_start_get_flags)(struct pmu_perfmon_cmd *pc);
		u32 (*get_pmu_perfmon_cmd_init_size)(void);
		int (*get_perfmon_cmd_init_offsetofvar)(
				enum pmu_perfmon_cmd_start_fields field);
		void (*perfmon_cmd_init_set_sample_buffer)(
				struct pmu_perfmon_cmd *pc, u16 value);
		void (*perfmon_cmd_init_set_dec_cnt)(
				struct pmu_perfmon_cmd *pc, u8 value);
		void (*perfmon_cmd_init_set_base_cnt_id)(
				struct pmu_perfmon_cmd *pc, u8 value);
		void (*perfmon_cmd_init_set_samp_period_us)(
				struct pmu_perfmon_cmd *pc, u32 value);
		void (*perfmon_cmd_init_set_num_cnt)(struct pmu_perfmon_cmd *pc,
				u8 value);
		void (*perfmon_cmd_init_set_mov_avg)(struct pmu_perfmon_cmd *pc,
				u8 value);
		void *(*get_pmu_seq_in_a_ptr)(
				struct pmu_sequence *seq);
		void *(*get_pmu_seq_out_a_ptr)(
				struct pmu_sequence *seq);
		void (*set_pmu_cmdline_args_secure_mode)(struct nvgpu_pmu *pmu,
			u32 val);
		u32 (*get_perfmon_cntr_sz)(struct nvgpu_pmu *pmu);
		void * (*get_perfmon_cntr_ptr)(struct nvgpu_pmu *pmu);
		void (*set_perfmon_cntr_ut)(struct nvgpu_pmu *pmu, u16 ut);
		void (*set_perfmon_cntr_lt)(struct nvgpu_pmu *pmu, u16 lt);
		void (*set_perfmon_cntr_valid)(struct nvgpu_pmu *pmu, u8 val);
		void (*set_perfmon_cntr_index)(struct nvgpu_pmu *pmu, u8 val);
		void (*set_perfmon_cntr_group_id)(struct nvgpu_pmu *pmu,
				u8 gid);

		u8 (*pg_cmd_eng_buf_load_size)(struct pmu_pg_cmd *pg);
		void (*pg_cmd_eng_buf_load_set_cmd_type)(struct pmu_pg_cmd *pg,
				u8 value);
		void (*pg_cmd_eng_buf_load_set_engine_id)(struct pmu_pg_cmd *pg,
				u8 value);
		void (*pg_cmd_eng_buf_load_set_buf_idx)(struct pmu_pg_cmd *pg,
				u8 value);
		void (*pg_cmd_eng_buf_load_set_pad)(struct pmu_pg_cmd *pg,
				u8 value);
		void (*pg_cmd_eng_buf_load_set_buf_size)(struct pmu_pg_cmd *pg,
				u16 value);
		void (*pg_cmd_eng_buf_load_set_dma_base)(struct pmu_pg_cmd *pg,
				u32 value);
		void (*pg_cmd_eng_buf_load_set_dma_offset)(struct pmu_pg_cmd *pg,
				u8 value);
		void (*pg_cmd_eng_buf_load_set_dma_idx)(struct pmu_pg_cmd *pg,
				u8 value);
	} pmu_ver;
	struct {
		int (*get_netlist_name)(struct gk20a *g, int index, char *name);
		bool (*is_fw_defined)(void);
	} gr_ctx;
#ifdef CONFIG_GK20A_CTXSW_TRACE
	/*
	 * Currently only supported on Linux due to the extremely tight
	 * integration with Linux device driver structure (in particular
	 * mmap).
	 */
	struct {
		int (*init)(struct gk20a *g);
		int (*max_entries)(struct gk20a *,
			struct nvgpu_ctxsw_trace_filter *filter);
		int (*flush)(struct gk20a *g);
		int (*poll)(struct gk20a *g);
		int (*enable)(struct gk20a *g);
		int (*disable)(struct gk20a *g);
		bool (*is_enabled)(struct gk20a *g);
		int (*reset)(struct gk20a *g);
		int (*bind_channel)(struct gk20a *g, struct channel_gk20a *ch);
		int (*unbind_channel)(struct gk20a *g,
					struct channel_gk20a *ch);
		int (*deinit)(struct gk20a *g);
		int (*alloc_user_buffer)(struct gk20a *g,
					void **buf, size_t *size);
		int (*free_user_buffer)(struct gk20a *g);
		int (*mmap_user_buffer)(struct gk20a *g,
					struct vm_area_struct *vma);
		int (*set_filter)(struct gk20a *g,
			struct nvgpu_ctxsw_trace_filter *filter);
	} fecs_trace;
#endif
	struct {
		bool (*support_sparse)(struct gk20a *g);
		u64 (*gmmu_map)(struct vm_gk20a *vm,
				u64 map_offset,
				struct nvgpu_sgt *sgt,
				u64 buffer_offset,
				u64 size,
				int pgsz_idx,
				u8 kind_v,
				u32 ctag_offset,
				u32 flags,
				int rw_flag,
				bool clear_ctags,
				bool sparse,
				bool priv,
				struct vm_gk20a_mapping_batch *batch,
				enum nvgpu_aperture aperture);
		void (*gmmu_unmap)(struct vm_gk20a *vm,
				u64 vaddr,
				u64 size,
				int pgsz_idx,
				bool va_allocated,
				int rw_flag,
				bool sparse,
				struct vm_gk20a_mapping_batch *batch);
		int (*vm_bind_channel)(struct gk20a_as_share *as_share,
				struct channel_gk20a *ch);
		int (*fb_flush)(struct gk20a *g);
		void (*l2_invalidate)(struct gk20a *g);
		void (*l2_flush)(struct gk20a *g, bool invalidate);
		void (*cbc_clean)(struct gk20a *g);
		void (*set_big_page_size)(struct gk20a *g,
					  struct nvgpu_mem *mem, int size);
		u32 (*get_big_page_sizes)(void);
		u32 (*get_default_big_page_size)(void);
		u32 (*get_iommu_bit)(struct gk20a *g);
		int (*init_mm_setup_hw)(struct gk20a *g);
		bool (*is_bar1_supported)(struct gk20a *g);
		int (*init_bar2_vm)(struct gk20a *g);
		int (*init_bar2_mm_hw_setup)(struct gk20a *g);
		void (*remove_bar2_vm)(struct gk20a *g);
		const struct gk20a_mmu_level *
			(*get_mmu_levels)(struct gk20a *g, u32 big_page_size);
		void (*init_pdb)(struct gk20a *g, struct nvgpu_mem *inst_block,
				struct vm_gk20a *vm);
		u64 (*gpu_phys_addr)(struct gk20a *g,
				     struct nvgpu_gmmu_attrs *attrs, u64 phys);
		size_t (*get_vidmem_size)(struct gk20a *g);
		int (*alloc_inst_block)(struct gk20a *g,
					struct nvgpu_mem *inst_block);
		void (*init_inst_block)(struct nvgpu_mem *inst_block,
				struct vm_gk20a *vm, u32 big_page_size);
		bool (*mmu_fault_pending)(struct gk20a *g);
		void (*fault_info_mem_destroy)(struct gk20a *g);
		u32 (*get_kind_invalid)(void);
		u32 (*get_kind_pitch)(void);
		u32 (*get_flush_retries)(struct gk20a *g,
							enum nvgpu_flush_op op);
	} mm;
	/*
	 * This function is called to allocate secure memory (memory
	 * that the CPU cannot see). The function should fill the
	 * context buffer descriptor (especially fields destroy, sgt,
	 * size).
	 */
	int (*secure_alloc)(struct gk20a *g,
				struct gr_ctx_buffer_desc *desc,
				size_t size);
	struct {
		u32 (*enter)(struct gk20a *g, struct nvgpu_mem *mem,
			struct nvgpu_sgt *sgt, void *sgl, u32 w);
		void (*exit)(struct gk20a *g, struct nvgpu_mem *mem,
			void *sgl);
		u32 (*data032_r)(u32 i);
	} pramin;
	struct {
		int (*init_therm_setup_hw)(struct gk20a *g);
		int (*elcg_init_idle_filters)(struct gk20a *g);
#ifdef CONFIG_DEBUG_FS
		void (*therm_debugfs_init)(struct gk20a *g);
#endif
		int (*get_internal_sensor_curr_temp)(struct gk20a *g, u32 *temp_f24_8);
		void (*get_internal_sensor_limits)(s32 *max_24_8,
							s32 *min_24_8);
		u32 (*configure_therm_alert)(struct gk20a *g, s32 curr_warn_temp);
	} therm;
	struct {
		bool (*is_pmu_supported)(struct gk20a *g);
		int (*prepare_ucode)(struct gk20a *g);
		int (*pmu_setup_hw_and_bootstrap)(struct gk20a *g);
		int (*pmu_nsbootstrap)(struct nvgpu_pmu *pmu);
		int (*pmu_setup_elpg)(struct gk20a *g);
		u32 (*pmu_get_queue_head)(u32 i);
		u32 (*pmu_get_queue_head_size)(void);
		u32 (*pmu_get_queue_tail_size)(void);
		u32 (*pmu_get_queue_tail)(u32 i);
		int (*pmu_queue_head)(struct nvgpu_pmu *pmu,
			struct pmu_queue *queue, u32 *head, bool set);
		int (*pmu_queue_tail)(struct nvgpu_pmu *pmu,
			struct pmu_queue *queue, u32 *tail, bool set);
		void (*pmu_msgq_tail)(struct nvgpu_pmu *pmu,
			u32 *tail, bool set);
		u32 (*pmu_mutex_size)(void);
		int (*pmu_mutex_acquire)(struct nvgpu_pmu *pmu,
			u32 id, u32 *token);
		int (*pmu_mutex_release)(struct nvgpu_pmu *pmu,
			u32 id, u32 *token);
		int (*init_wpr_region)(struct gk20a *g);
		int (*load_lsfalcon_ucode)(struct gk20a *g, u32 falconidmask);
		void (*write_dmatrfbase)(struct gk20a *g, u32 addr);
		void (*pmu_elpg_statistics)(struct gk20a *g, u32 pg_engine_id,
			struct pmu_pg_stats_data *pg_stat_data);
		int (*pmu_pg_init_param)(struct gk20a *g, u32 pg_engine_id);
		int (*pmu_pg_set_sub_feature_mask)(struct gk20a *g,
			u32 pg_engine_id);
		u32 (*pmu_pg_supported_engines_list)(struct gk20a *g);
		u32 (*pmu_pg_engines_feature_list)(struct gk20a *g,
			u32 pg_engine_id);
		bool (*pmu_is_lpwr_feature_supported)(struct gk20a *g,
			u32 feature_id);
		int (*pmu_lpwr_enable_pg)(struct gk20a *g, bool pstate_lock);
		int (*pmu_lpwr_disable_pg)(struct gk20a *g, bool pstate_lock);
		u32 (*pmu_pg_param_post_init)(struct gk20a *g);
		void (*dump_secure_fuses)(struct gk20a *g);
		int (*reset_engine)(struct gk20a *g, bool do_reset);
		bool (*is_engine_in_reset)(struct gk20a *g);
		int (*falcon_wait_for_halt)(struct gk20a *g,
			unsigned int timeout);
		int (*falcon_clear_halt_interrupt_status)(struct gk20a *g,
			unsigned int timeout);
		int (*init_falcon_setup_hw)(struct gk20a *g,
			void *desc, u32 bl_sz);
		bool (*is_lazy_bootstrap)(u32 falcon_id);
		bool (*is_priv_load)(u32 falcon_id);
		void (*get_wpr)(struct gk20a *g, struct wpr_carveout_info *inf);
		int (*alloc_blob_space)(struct gk20a *g,
				size_t size, struct nvgpu_mem *mem);
		int (*pmu_populate_loader_cfg)(struct gk20a *g,
			void *lsfm,	u32 *p_bl_gen_desc_size);
		int (*flcn_populate_bl_dmem_desc)(struct gk20a *g,
			void *lsfm,	u32 *p_bl_gen_desc_size, u32 falconid);
		void (*handle_ext_irq)(struct gk20a *g, u32 intr);
		void (*set_irqmask)(struct gk20a *g);
		void (*update_lspmu_cmdline_args)(struct gk20a *g);
		void (*setup_apertures)(struct gk20a *g);
		u32 (*get_irqdest)(struct gk20a *g);
	} pmu;
	struct {
		int (*init_debugfs)(struct gk20a *g);
		void (*disable_slowboot)(struct gk20a *g);
		int (*init_clk_support)(struct gk20a *g);
		int (*suspend_clk_support)(struct gk20a *g);
		u32 (*get_crystal_clk_hz)(struct gk20a *g);
		unsigned long (*measure_freq)(struct gk20a *g, u32 api_domain);
		unsigned long (*get_rate)(struct gk20a *g, u32 api_domain);
		int (*set_rate)(struct gk20a *g, u32 api_domain, unsigned long rate);
		unsigned long (*get_fmax_at_vmin_safe)(struct clk_gk20a *clk);
		u32 (*get_ref_clock_rate)(struct gk20a *g);
		int (*predict_mv_at_hz_cur_tfloor)(struct clk_gk20a *clk,
			unsigned long rate);
		unsigned long (*get_maxrate)(struct gk20a *g, u32 api_domain);
		int (*prepare_enable)(struct clk_gk20a *clk);
		void (*disable_unprepare)(struct clk_gk20a *clk);
		int (*get_voltage)(struct clk_gk20a *clk, u64 *val);
		int (*get_gpcclk_clock_counter)(struct clk_gk20a *clk, u64 *val);
		int (*pll_reg_write)(struct gk20a *g, u32 reg, u32 val);
		int (*get_pll_debug_data)(struct gk20a *g,
				struct nvgpu_clk_pll_debug_data *d);
		int (*mclk_init)(struct gk20a *g);
		void (*mclk_deinit)(struct gk20a *g);
		int (*mclk_change)(struct gk20a *g, u16 val);
	} clk;
	struct {
		u32 (*get_arbiter_clk_domains)(struct gk20a *g);
		int (*get_arbiter_clk_range)(struct gk20a *g, u32 api_domain,
				u16 *min_mhz, u16 *max_mhz);
		int (*get_arbiter_clk_default)(struct gk20a *g, u32 api_domain,
				u16 *default_mhz);
		/* This function is inherently unsafe to call while
		 *  arbiter is running arbiter must be blocked
		 *  before calling this function */
		int (*get_current_pstate)(struct gk20a *g);
	} clk_arb;
	struct {
		int (*handle_pmu_perf_event)(struct gk20a *g, void *pmu_msg);
	} perf;
	struct {
		const struct regop_offset_range* (
				*get_global_whitelist_ranges)(void);
		int (*get_global_whitelist_ranges_count)(void);
		const struct regop_offset_range* (
				*get_context_whitelist_ranges)(void);
		int (*get_context_whitelist_ranges_count)(void);
		const u32* (*get_runcontrol_whitelist)(void);
		int (*get_runcontrol_whitelist_count)(void);
		const struct regop_offset_range* (
				*get_runcontrol_whitelist_ranges)(void);
		int (*get_runcontrol_whitelist_ranges_count)(void);
		const u32* (*get_qctl_whitelist)(void);
		int (*get_qctl_whitelist_count)(void);
		const struct regop_offset_range* (
				*get_qctl_whitelist_ranges)(void);
		int (*get_qctl_whitelist_ranges_count)(void);
		int (*apply_smpc_war)(struct dbg_session_gk20a *dbg_s);
	} regops;
	struct {
		void (*intr_enable)(struct gk20a *g);
		void (*intr_unit_config)(struct gk20a *g,
				bool enable, bool is_stalling, u32 unit);
		void (*isr_stall)(struct gk20a *g);
		bool (*is_intr_hub_pending)(struct gk20a *g, u32 mc_intr);
		u32 (*intr_stall)(struct gk20a *g);
		void (*intr_stall_pause)(struct gk20a *g);
		void (*intr_stall_resume)(struct gk20a *g);
		u32 (*intr_nonstall)(struct gk20a *g);
		void (*intr_nonstall_pause)(struct gk20a *g);
		void (*intr_nonstall_resume)(struct gk20a *g);
		void (*enable)(struct gk20a *g, u32 units);
		void (*disable)(struct gk20a *g, u32 units);
		void (*reset)(struct gk20a *g, u32 units);
		u32 (*boot_0)(struct gk20a *g, u32 *arch, u32 *impl, u32 *rev);
		bool (*is_intr1_pending)(struct gk20a *g, enum nvgpu_unit unit, u32 mc_intr_1);
	} mc;
	struct {
		void (*show_dump)(struct gk20a *g,
				struct gk20a_debug_output *o);
	} debug;
	struct {
		int (*exec_reg_ops)(struct dbg_session_gk20a *dbg_s,
			    struct nvgpu_dbg_reg_op *ops,
			    u64 num_ops);
		int (*dbg_set_powergate)(struct dbg_session_gk20a *dbg_s,
					bool disable_powergate);
		bool (*check_and_set_global_reservation)(
				struct dbg_session_gk20a *dbg_s,
				struct dbg_profiler_object_data *prof_obj);
		bool (*check_and_set_context_reservation)(
				struct dbg_session_gk20a *dbg_s,
				struct dbg_profiler_object_data *prof_obj);
		void (*release_profiler_reservation)(
				struct dbg_session_gk20a *dbg_s,
				struct dbg_profiler_object_data *prof_obj);
		int (*perfbuffer_enable)(struct gk20a *g, u64 offset, u32 size);
		int (*perfbuffer_disable)(struct gk20a *g);
	} dbg_session_ops;

	int (*get_litter_value)(struct gk20a *g, int value);
	int (*chip_init_gpu_characteristics)(struct gk20a *g);

	struct {
		void (*init_hw)(struct gk20a *g);
		void (*isr)(struct gk20a *g);
		int (*read_ptimer)(struct gk20a *g, u64 *value);
		int (*get_timestamps_zipper)(struct gk20a *g,
			u32 source_id, u32 count,
			struct nvgpu_cpu_time_correlation_sample *);
		int (*bar1_bind)(struct gk20a *g, struct nvgpu_mem *bar1_inst);
	} bus;

	struct {
		int (*init)(struct gk20a *g);
		int (*preos_wait_for_halt)(struct gk20a *g);
		void (*preos_reload_check)(struct gk20a *g);
	} bios;

#if defined(CONFIG_GK20A_CYCLE_STATS)
	struct {
		int (*enable_snapshot)(struct channel_gk20a *ch,
				struct gk20a_cs_snapshot_client *client);
		void (*disable_snapshot)(struct gr_gk20a *gr);
		int (*check_data_available)(struct channel_gk20a *ch,
						u32 *pending,
						bool *hw_overflow);
		void (*set_handled_snapshots)(struct gk20a *g, u32 num);
		u32 (*allocate_perfmon_ids)(struct gk20a_cs_snapshot *data,
				       u32 count);
		u32 (*release_perfmon_ids)(struct gk20a_cs_snapshot *data,
				      u32 start,
				      u32 count);
		int (*detach_snapshot)(struct channel_gk20a *ch,
				struct gk20a_cs_snapshot_client *client);
	} css;
#endif
	struct {
		int (*get_speed)(struct gk20a *g, u32 *xve_link_speed);
		int (*set_speed)(struct gk20a *g, u32 xve_link_speed);
		void (*available_speeds)(struct gk20a *g, u32 *speed_mask);
		u32 (*xve_readl)(struct gk20a *g, u32 reg);
		void (*xve_writel)(struct gk20a *g, u32 reg, u32 val);
		void (*disable_aspm)(struct gk20a *g);
		void (*reset_gpu)(struct gk20a *g);
#if defined(CONFIG_PCI_MSI)
		void (*rearm_msi)(struct gk20a *g);
#endif
		void (*enable_shadow_rom)(struct gk20a *g);
		void (*disable_shadow_rom)(struct gk20a *g);
		u32 (*get_link_control_status)(struct gk20a *g);
	} xve;
	struct {
		void (*falcon_hal_sw_init)(struct nvgpu_falcon *flcn);
	} falcon;
	struct {
		void (*isr)(struct gk20a *g);
	} priv_ring;
	struct {
		int (*check_priv_security)(struct gk20a *g);
	} fuse;

};

struct nvgpu_bios_ucode {
	u8 *bootloader;
	u32 bootloader_phys_base;
	u32 bootloader_size;
	u8 *ucode;
	u32 phys_base;
	u32 size;
	u8 *dmem;
	u32 dmem_phys_base;
	u32 dmem_size;
	u32 code_entry_point;
};

struct nvgpu_bios {
	u32 vbios_version;
	u8 vbios_oem_version;

	u8 *data;
	size_t size;

	struct nvgpu_bios_ucode devinit;
	struct nvgpu_bios_ucode preos;

	u8 *devinit_tables;
	u32 devinit_tables_size;
	u8 *bootscripts;
	u32 bootscripts_size;

	u8 mem_strap_data_count;
	u16 mem_strap_xlat_tbl_ptr;

	u32 condition_table_ptr;

	u32 devinit_tables_phys_base;
	u32 devinit_script_phys_base;

	struct bit_token *perf_token;
	struct bit_token *clock_token;
	struct bit_token *virt_token;
	u32 expansion_rom_offset;
};

struct nvgpu_gpu_params {
	/* GPU architecture ID */
	u32 gpu_arch;
	/* GPU implementation ID */
	u32 gpu_impl;
	/* GPU revision ID */
	u32 gpu_rev;
	/* sm version */
	u32 sm_arch_sm_version;
	/* sm instruction set */
	u32 sm_arch_spa_version;
	u32 sm_arch_warp_count;
};

struct gk20a {
	void (*free)(struct gk20a *g);
	struct nvgpu_nvhost_dev *nvhost_dev;

	/*
	 * Used by <nvgpu/enabled.h>. Do not access directly!
	 */
	unsigned long *enabled_flags;

	nvgpu_atomic_t usage_count;

	struct nvgpu_ref refcount;

	const char *name;

	bool gpu_reset_done;
	bool power_on;
	bool suspended;

	u32 log_mask;
	u32 log_trace;

	struct nvgpu_gpu_params params;

	/*
	 * Guards access to hardware when usual gk20a_{busy,idle} are skipped
	 * for submits and held for channel lifetime but dropped for an ongoing
	 * gk20a_do_idle().
	 */
	struct nvgpu_rwsem deterministic_busy;

	struct nvgpu_falcon pmu_flcn;
	struct nvgpu_falcon sec2_flcn;
	struct nvgpu_falcon fecs_flcn;
	struct nvgpu_falcon gpccs_flcn;
	struct nvgpu_falcon nvdec_flcn;
	struct clk_gk20a clk;
	struct fifo_gk20a fifo;
	struct gr_gk20a gr;
	struct sim_gk20a *sim;
	struct mm_gk20a mm;
	struct nvgpu_pmu pmu;
	struct acr_desc acr;
	struct ecc_gk20a ecc;
	struct clk_pmupstate clk_pmu;
	struct perf_pmupstate perf_pmu;
	struct pmgr_pmupstate pmgr_pmu;
	struct therm_pmupstate therm_pmu;

#ifdef CONFIG_DEBUG_FS
	struct railgate_stats pstats;
#endif
	u32 gr_idle_timeout_default;
	bool timeouts_enabled;
	unsigned int ch_wdt_timeout_ms;

	struct nvgpu_mutex poweron_lock;
	struct nvgpu_mutex poweroff_lock;

	/* Channel priorities */
	u32 timeslice_low_priority_us;
	u32 timeslice_medium_priority_us;
	u32 timeslice_high_priority_us;
	u32 min_timeslice_us;
	u32 max_timeslice_us;
	bool runlist_interleave;

	bool slcg_enabled;
	bool blcg_enabled;
	bool elcg_enabled;
	bool elpg_enabled;
	bool aelpg_enabled;
	bool can_elpg;
	bool mscg_enabled;
	bool forced_idle;
	bool forced_reset;
	bool allow_all;

	u32 default_pri_timeout;

	u32 ptimer_src_freq;

	bool can_railgate;
	bool user_railgate_disabled;
	int railgate_delay;

	unsigned int aggressive_sync_destroy_thresh;
	bool aggressive_sync_destroy;

	bool has_syncpoints;
	/* Debugfs knob for forcing syncpt support off in runtime. */
	u32 disable_syncpoints;

	bool support_pmu;
	u32 bootstrap_owner;

	bool is_virtual;

	bool has_cde;

	u32 emc3d_ratio;

	struct nvgpu_spinlock ltc_enabled_lock;

	struct gk20a_ctxsw_ucode_info ctxsw_ucode_info;

	/*
	 * A group of semaphore pools. One for each channel.
	 */
	struct nvgpu_semaphore_sea *sema_sea;

	/* List of pending SW semaphore waits. */
	struct nvgpu_list_node pending_sema_waits;
	struct nvgpu_raw_spinlock pending_sema_waits_lock;

	/* held while manipulating # of debug/profiler sessions present */
	/* also prevents debug sessions from attaching until released */
	struct nvgpu_mutex dbg_sessions_lock;
	int dbg_powergating_disabled_refcount; /*refcount for pg disable */
	int dbg_timeout_disabled_refcount; /*refcount for timeout disable */

	/* must have dbg_sessions_lock before use */
	struct nvgpu_dbg_reg_op *dbg_regops_tmp_buf;
	u32 dbg_regops_tmp_buf_ops;

	/* For perfbuf mapping */
	struct {
		struct dbg_session_gk20a *owner;
		u64 offset;
	} perfbuf;

	/* For profiler reservations */
	struct nvgpu_list_node profiler_objects;
	bool global_profiler_reservation_held;
	int profiler_reservation_count;

	void (*remove_support)(struct gk20a *);

	u64 pg_ingating_time_us;
	u64 pg_ungating_time_us;
	u32 pg_gating_cnt;

	struct nvgpu_spinlock mc_enable_lock;

	struct gk20a_as as;

	struct nvgpu_mutex client_lock;
	int client_refcount; /* open channels and ctrl nodes */

	struct gpu_ops ops;
	u32 mc_intr_mask_restore[4];
	/*used for change of enum zbc update cmd id from ver 0 to ver1*/
	u32 pmu_ver_cmd_id_zbc_table_update;
	u32 pmu_lsf_pmu_wpr_init_done;
	u32 pmu_lsf_loaded_falcon_id;

	int irqs_enabled;
	int irq_stall; /* can be same as irq_nonstall in case of PCI */
	int irq_nonstall;
	u32 max_ltc_count;
	u32 ltc_count;

	struct gk20a_channel_worker {
		struct nvgpu_thread poll_task;
		nvgpu_atomic_t put;
		struct nvgpu_cond wq;
		struct nvgpu_list_node items;
		struct nvgpu_spinlock items_lock;
		struct nvgpu_mutex start_lock;
	} channel_worker;

	struct {
		void (*open)(struct channel_gk20a *ch);
		void (*close)(struct channel_gk20a *ch);
		void (*work_completion_signal)(struct channel_gk20a *ch);
		void (*work_completion_cancel_sync)(struct channel_gk20a *ch);
	} os_channel;

	struct gk20a_scale_profile *scale_profile;
	unsigned long last_freq;

	struct gk20a_ctxsw_trace *ctxsw_trace;
	struct gk20a_fecs_trace *fecs_trace;

	bool mmu_debug_ctrl;

	u32 tpc_fs_mask_user;

	struct nvgpu_bios bios;
	bool bios_is_init;

	struct nvgpu_clk_arb *clk_arb;

	struct gk20a_ce_app ce_app;

	/* PCI device identifier */
	u16 pci_vendor_id, pci_device_id;
	u16 pci_subsystem_vendor_id, pci_subsystem_device_id;
	u16 pci_class;
	u8 pci_revision;

	/* PCIe power states. */
	bool xve_l0s;
	bool xve_l1;

	/* Current warning temp in sfxp24.8 */
	s32 curr_warn_temp;

#if defined(CONFIG_PCI_MSI)
	/* Check if msi is enabled */
	bool msi_enabled;
#endif
#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
	struct nvgpu_mem_alloc_tracker *vmallocs;
	struct nvgpu_mem_alloc_tracker *kmallocs;
#endif

	/* The minimum VBIOS version supported */
	u32 vbios_min_version;

	/* memory training sequence and mclk switch scripts */
	u32 mem_config_idx;

	u64 dma_memory_used;

#if defined(CONFIG_TEGRA_GK20A_NVHOST) && defined(CONFIG_TEGRA_19x_GPU)
	u64		syncpt_unit_base;
	size_t		syncpt_unit_size;
	u32		syncpt_size;
#endif
	struct nvgpu_mem syncpt_mem;

	struct nvgpu_list_node boardobj_head;
	struct nvgpu_list_node boardobjgrp_head;
};

static inline unsigned long gk20a_get_gr_idle_timeout(struct gk20a *g)
{
	return g->timeouts_enabled ?
		g->gr_idle_timeout_default : ULONG_MAX;
}

#define MULTICHAR_TAG(a, b, c, d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
enum BAR0_DEBUG_OPERATION {
	BARO_ZERO_NOP = 0,
	OP_END = MULTICHAR_TAG('D', 'O', 'N', 'E'),
	BAR0_READ32 = MULTICHAR_TAG('0', 'R', '3', '2'),
	BAR0_WRITE32 = MULTICHAR_TAG('0', 'W', '3', '2'),
};

struct share_buffer_head {
	enum BAR0_DEBUG_OPERATION operation;
/* size of the operation item */
	u32 size;
	u32 completed;
	u32 failed;
	u64 context;
	u64 completion_callback;
};

struct gk20a_cyclestate_buffer_elem {
	struct share_buffer_head	head;
/* in */
	u64 p_data;
	u64 p_done;
	u32 offset_bar0;
	u16 first_bit;
	u16 last_bit;
/* out */
/* keep 64 bits to be consistent */
	u64 data;
};

/* operations that will need to be executed on non stall workqueue */
enum gk20a_nonstall_ops {
	gk20a_nonstall_ops_wakeup_semaphore = BIT(0), /* wake up semaphore */
	gk20a_nonstall_ops_post_events = BIT(1),
};

/* register accessors */
void __nvgpu_check_gpu_state(struct gk20a *g);
void __gk20a_warn_on_no_regs(void);

/* convenience */
static inline struct gk20a *gk20a_from_as(struct gk20a_as *as)
{
	return container_of(as, struct gk20a, as);
}
static inline struct gk20a *gk20a_from_pmu(struct nvgpu_pmu *pmu)
{
	return container_of(pmu, struct gk20a, pmu);
}

static inline u32 u64_hi32(u64 n)
{
	return (u32)((n >> 32) & ~(u32)0);
}

static inline u32 u64_lo32(u64 n)
{
	return (u32)(n & ~(u32)0);
}

static inline u64 hi32_lo32_to_u64(u32 hi, u32 lo)
{
	return  (((u64)hi) << 32) | (u64)lo;
}

static inline u32 set_field(u32 val, u32 mask, u32 field)
{
	return ((val & ~mask) | field);
}

static inline u32 get_field(u32 reg, u32 mask)
{
	return (reg & mask);
}

/* invalidate channel lookup tlb */
static inline void gk20a_gr_flush_channel_tlb(struct gr_gk20a *gr)
{
	nvgpu_spinlock_acquire(&gr->ch_tlb_lock);
	memset(gr->chid_tlb, 0,
		sizeof(struct gr_channel_map_tlb_entry) *
		GR_CHANNEL_MAP_TLB_SIZE);
	nvgpu_spinlock_release(&gr->ch_tlb_lock);
}

/* classes that the device supports */
/* TBD: get these from an open-sourced SDK? */
enum {
	FERMI_TWOD_A              = 0x902D,
	KEPLER_INLINE_TO_MEMORY_A = 0xA040,
	KEPLER_DMA_COPY_A         = 0xA0B5,
};

#define GK20A_BAR0_IORESOURCE_MEM 0
#define GK20A_BAR1_IORESOURCE_MEM 1
#define GK20A_SIM_IORESOURCE_MEM 2

void gk20a_busy_noresume(struct gk20a *g);
void gk20a_idle_nosuspend(struct gk20a *g);
int __must_check gk20a_busy(struct gk20a *g);
void gk20a_idle(struct gk20a *g);
int __gk20a_do_idle(struct gk20a *g, bool force_reset);
int __gk20a_do_unidle(struct gk20a *g);

int gk20a_can_busy(struct gk20a *g);
int gk20a_wait_for_idle(struct gk20a *g);

#define NVGPU_GPU_ARCHITECTURE_SHIFT 4

/* constructs unique and compact GPUID from nvgpu_gpu_characteristics
 * arch/impl fields */
#define GK20A_GPUID(arch, impl) ((u32) ((arch) | (impl)))

#define GK20A_GPUID_GK20A   0x000000EA
#define GK20A_GPUID_GM20B   0x0000012B
#define GK20A_GPUID_GM20B_B 0x0000012E
#define NVGPU_GPUID_GP10B   0x0000013B
#define NVGPU_GPUID_GP104   0x00000134
#define NVGPU_GPUID_GP106   0x00000136

int gk20a_init_gpu_characteristics(struct gk20a *g);

static inline u32 ptimer_scalingfactor10x(u32 ptimer_src_freq)
{
	return (u32)(((u64)(PTIMER_REF_FREQ_HZ * 10)) / ptimer_src_freq);
}
static inline u32 scale_ptimer(u32 timeout , u32 scale10x)
{
	if (((timeout*10) % scale10x) >= (scale10x/2))
		return ((timeout * 10) / scale10x) + 1;
	else
		return (timeout * 10) / scale10x;
}

int gk20a_prepare_poweroff(struct gk20a *g);
int gk20a_finalize_poweron(struct gk20a *g);

void nvgpu_wait_for_deferred_interrupts(struct gk20a *g);

struct gk20a * __must_check gk20a_get(struct gk20a *g);
void gk20a_put(struct gk20a *g);

static inline bool gk20a_platform_has_syncpoints(struct gk20a *g)
{
#ifdef CONFIG_TEGRA_GK20A_NVHOST
	return g->has_syncpoints && !g->disable_syncpoints;
#else
	return false;
#endif
}

#endif /* GK20A_H */