[linux-2.6-microblaze.git] / drivers / misc / habanalabs / common / habanalabs.h

/* SPDX-License-Identifier: GPL-2.0
 *
 * Copyright 2016-2021 HabanaLabs, Ltd.
 * All Rights Reserved.
 *
 */

#ifndef HABANALABSP_H_
#define HABANALABSP_H_

#include "../include/common/cpucp_if.h"
#include "../include/common/qman_if.h"
#include "../include/hw_ip/mmu/mmu_general.h"
#include <uapi/misc/habanalabs.h>

#include <linux/cdev.h>
#include <linux/iopoll.h>
#include <linux/irqreturn.h>
#include <linux/dma-direction.h>
#include <linux/scatterlist.h>
#include <linux/hashtable.h>
#include <linux/debugfs.h>
#include <linux/rwsem.h>
#include <linux/bitfield.h>
#include <linux/genalloc.h>
#include <linux/sched/signal.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/coresight.h>
#include <linux/dma-buf.h>

#define HL_NAME                         "habanalabs"

/* Use upper bits of mmap offset to store habana driver specific information.
 * bits[63:61] - Encode mmap type
 * bits[45:0]  - mmap offset value
 *
 * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these
 *  defines are w.r.t to PAGE_SIZE
 */
#define HL_MMAP_TYPE_SHIFT              (61 - PAGE_SHIFT)
#define HL_MMAP_TYPE_MASK               (0x7ull << HL_MMAP_TYPE_SHIFT)
#define HL_MMAP_TYPE_BLOCK              (0x4ull << HL_MMAP_TYPE_SHIFT)
#define HL_MMAP_TYPE_CB                 (0x2ull << HL_MMAP_TYPE_SHIFT)

#define HL_MMAP_OFFSET_VALUE_MASK       (0x1FFFFFFFFFFFull >> PAGE_SHIFT)
#define HL_MMAP_OFFSET_VALUE_GET(off)   (off & HL_MMAP_OFFSET_VALUE_MASK)

#define HL_PENDING_RESET_PER_SEC        10
#define HL_PENDING_RESET_MAX_TRIALS     60 /* 10 minutes */
#define HL_PENDING_RESET_LONG_SEC       60

#define HL_HARD_RESET_MAX_TIMEOUT       120
#define HL_PLDM_HARD_RESET_MAX_TIMEOUT  (HL_HARD_RESET_MAX_TIMEOUT * 3)

#define HL_DEVICE_TIMEOUT_USEC          1000000 /* 1 s */

#define HL_HEARTBEAT_PER_USEC           5000000 /* 5 s */

#define HL_PLL_LOW_JOB_FREQ_USEC        5000000 /* 5 s */

#define HL_CPUCP_INFO_TIMEOUT_USEC      10000000 /* 10s */
#define HL_CPUCP_EEPROM_TIMEOUT_USEC    10000000 /* 10s */

#define HL_FW_STATUS_POLL_INTERVAL_USEC         10000 /* 10ms */

#define HL_PCI_ELBI_TIMEOUT_MSEC        10 /* 10ms */

#define HL_SIM_MAX_TIMEOUT_US           10000000 /* 10s */

#define HL_COMMON_USER_INTERRUPT_ID     0xFFF

#define HL_STATE_DUMP_HIST_LEN          5

/* Default value for device reset trigger , an invalid value */
#define HL_RESET_TRIGGER_DEFAULT        0xFF

#define OBJ_NAMES_HASH_TABLE_BITS       7 /* 1 << 7 buckets */
#define SYNC_TO_ENGINE_HASH_TABLE_BITS  7 /* 1 << 7 buckets */

/* Memory */
#define MEM_HASH_TABLE_BITS             7 /* 1 << 7 buckets */

/* MMU */
#define MMU_HASH_TABLE_BITS             7 /* 1 << 7 buckets */

/**
 * enum hl_mmu_page_table_locaion - mmu page table location
 * @MMU_DR_PGT: page-table is located on device DRAM.
 * @MMU_HR_PGT: page-table is located on host memory.
 * @MMU_NUM_PGT_LOCATIONS: number of page-table locations currently supported.
 */
enum hl_mmu_page_table_location {
        MMU_DR_PGT = 0,         /* device-dram-resident MMU PGT */
        MMU_HR_PGT,             /* host resident MMU PGT */
        MMU_NUM_PGT_LOCATIONS   /* num of PGT locations */
};

/*
 * HL_RSVD_SOBS 'sync stream' reserved sync objects per QMAN stream
 * HL_RSVD_MONS 'sync stream' reserved monitors per QMAN stream
 */
#define HL_RSVD_SOBS                    2
#define HL_RSVD_MONS                    1

/*
 * HL_COLLECTIVE_RSVD_MSTR_MONS 'collective' reserved monitors per QMAN stream
 */
#define HL_COLLECTIVE_RSVD_MSTR_MONS    2

#define HL_MAX_SOB_VAL                  (1 << 15)

#define IS_POWER_OF_2(n)                (n != 0 && ((n & (n - 1)) == 0))
#define IS_MAX_PENDING_CS_VALID(n)      (IS_POWER_OF_2(n) && (n > 1))

#define HL_PCI_NUM_BARS                 6

#define HL_MAX_DCORES                   4

/*
 * Reset Flags
 *
 * - HL_DRV_RESET_HARD
 *       If set do hard reset to all engines. If not set reset just
 *       compute/DMA engines.
 *
 * - HL_DRV_RESET_FROM_RESET_THR
 *       Set if the caller is the hard-reset thread
 *
 * - HL_DRV_RESET_HEARTBEAT
 *       Set if reset is due to heartbeat
 *
 * - HL_DRV_RESET_TDR
 *       Set if reset is due to TDR
 *
 * - HL_DRV_RESET_DEV_RELEASE
 *       Set if reset is due to device release
 *
 * - HL_DRV_RESET_BYPASS_REQ_TO_FW
 *       F/W will perform the reset. No need to ask it to reset the device. This is relevant
 *       only when running with secured f/w
 *
 * - HL_DRV_RESET_FW_FATAL_ERR
 *       Set if reset is due to a fatal error from FW
 */

#define HL_DRV_RESET_HARD               (1 << 0)
#define HL_DRV_RESET_FROM_RESET_THR     (1 << 1)
#define HL_DRV_RESET_HEARTBEAT          (1 << 2)
#define HL_DRV_RESET_TDR                (1 << 3)
#define HL_DRV_RESET_DEV_RELEASE        (1 << 4)
#define HL_DRV_RESET_BYPASS_REQ_TO_FW   (1 << 5)
#define HL_DRV_RESET_FW_FATAL_ERR       (1 << 6)

#define HL_MAX_SOBS_PER_MONITOR 8

/**
 * struct hl_gen_wait_properties - properties for generating a wait CB
 * @data: command buffer
 * @q_idx: queue id is used to extract fence register address
 * @size: offset in command buffer
 * @sob_base: SOB base to use in this wait CB
 * @sob_val: SOB value to wait for
 * @mon_id: monitor to use in this wait CB
 * @sob_mask: each bit represents a SOB offset from sob_base to be used
 */
struct hl_gen_wait_properties {
        void    *data;
        u32     q_idx;
        u32     size;
        u16     sob_base;
        u16     sob_val;
        u16     mon_id;
        u8      sob_mask;
};

/**
 * struct pgt_info - MMU hop page info.
 * @node: hash linked-list node for the pgts shadow hash of pgts.
 * @phys_addr: physical address of the pgt.
 * @shadow_addr: shadow hop in the host.
 * @ctx: pointer to the owner ctx.
 * @num_of_ptes: indicates how many ptes are used in the pgt.
 *
 * The MMU page tables hierarchy is placed on the DRAM. When a new level (hop)
 * is needed during mapping, a new page is allocated and this structure holds
 * its essential information. During unmapping, if no valid PTEs remained in the
 * page, it is freed with its pgt_info structure.
 */
struct pgt_info {
        struct hlist_node       node;
        u64                     phys_addr;
        u64                     shadow_addr;
        struct hl_ctx           *ctx;
        int                     num_of_ptes;
};

struct hl_device;
struct hl_fpriv;

/**
 * enum hl_pci_match_mode - pci match mode per region
 * @PCI_ADDRESS_MATCH_MODE: address match mode
 * @PCI_BAR_MATCH_MODE: bar match mode
 */
enum hl_pci_match_mode {
        PCI_ADDRESS_MATCH_MODE,
        PCI_BAR_MATCH_MODE
};

/**
 * enum hl_fw_component - F/W components to read version through registers.
 * @FW_COMP_BOOT_FIT: boot fit.
 * @FW_COMP_PREBOOT: preboot.
 * @FW_COMP_LINUX: linux.
 */
enum hl_fw_component {
        FW_COMP_BOOT_FIT,
        FW_COMP_PREBOOT,
        FW_COMP_LINUX,
};

/**
 * enum hl_fw_types - F/W types present in the system
 * @FW_TYPE_NONE: no FW component indication
 * @FW_TYPE_LINUX: Linux image for device CPU
 * @FW_TYPE_BOOT_CPU: Boot image for device CPU
 * @FW_TYPE_PREBOOT_CPU: Indicates pre-loaded CPUs are present in the system
 *                       (preboot, ppboot etc...)
 * @FW_TYPE_ALL_TYPES: Mask for all types
 */
enum hl_fw_types {
        FW_TYPE_NONE = 0x0,
        FW_TYPE_LINUX = 0x1,
        FW_TYPE_BOOT_CPU = 0x2,
        FW_TYPE_PREBOOT_CPU = 0x4,
        FW_TYPE_ALL_TYPES =
                (FW_TYPE_LINUX | FW_TYPE_BOOT_CPU | FW_TYPE_PREBOOT_CPU)
};

/**
 * enum hl_queue_type - Supported QUEUE types.
 * @QUEUE_TYPE_NA: queue is not available.
 * @QUEUE_TYPE_EXT: external queue which is a DMA channel that may access the
 *                  host.
 * @QUEUE_TYPE_INT: internal queue that performs DMA inside the device's
 *                      memories and/or operates the compute engines.
 * @QUEUE_TYPE_CPU: S/W queue for communication with the device's CPU.
 * @QUEUE_TYPE_HW: queue of DMA and compute engines jobs, for which completion
 *                 notifications are sent by H/W.
 */
enum hl_queue_type {
        QUEUE_TYPE_NA,
        QUEUE_TYPE_EXT,
        QUEUE_TYPE_INT,
        QUEUE_TYPE_CPU,
        QUEUE_TYPE_HW
};

enum hl_cs_type {
        CS_TYPE_DEFAULT,
        CS_TYPE_SIGNAL,
        CS_TYPE_WAIT,
        CS_TYPE_COLLECTIVE_WAIT,
        CS_RESERVE_SIGNALS,
        CS_UNRESERVE_SIGNALS
};

/*
 * struct hl_inbound_pci_region - inbound region descriptor
 * @mode: pci match mode for this region
 * @addr: region target address
 * @size: region size in bytes
 * @offset_in_bar: offset within bar (address match mode)
 * @bar: bar id
 */
struct hl_inbound_pci_region {
        enum hl_pci_match_mode  mode;
        u64                     addr;
        u64                     size;
        u64                     offset_in_bar;
        u8                      bar;
};

/*
 * struct hl_outbound_pci_region - outbound region descriptor
 * @addr: region target address
 * @size: region size in bytes
 */
struct hl_outbound_pci_region {
        u64     addr;
        u64     size;
};

/*
 * enum queue_cb_alloc_flags - Indicates queue support for CBs that
 * allocated by Kernel or by User
 * @CB_ALLOC_KERNEL: support only CBs that allocated by Kernel
 * @CB_ALLOC_USER: support only CBs that allocated by User
 */
enum queue_cb_alloc_flags {
        CB_ALLOC_KERNEL = 0x1,
        CB_ALLOC_USER   = 0x2
};

/*
 * struct hl_hw_sob - H/W SOB info.
 * @hdev: habanalabs device structure.
 * @kref: refcount of this SOB. The SOB will reset once the refcount is zero.
 * @sob_id: id of this SOB.
 * @sob_addr: the sob offset from the base address.
 * @q_idx: the H/W queue that uses this SOB.
 * @need_reset: reset indication set when switching to the other sob.
 */
struct hl_hw_sob {
        struct hl_device        *hdev;
        struct kref             kref;
        u32                     sob_id;
        u32                     sob_addr;
        u32                     q_idx;
        bool                    need_reset;
};

enum hl_collective_mode {
        HL_COLLECTIVE_NOT_SUPPORTED = 0x0,
        HL_COLLECTIVE_MASTER = 0x1,
        HL_COLLECTIVE_SLAVE = 0x2
};

/**
 * struct hw_queue_properties - queue information.
 * @type: queue type.
 * @queue_cb_alloc_flags: bitmap which indicates if the hw queue supports CB
 *                        that allocated by the Kernel driver and therefore,
 *                        a CB handle can be provided for jobs on this queue.
 *                        Otherwise, a CB address must be provided.
 * @collective_mode: collective mode of current queue
 * @driver_only: true if only the driver is allowed to send a job to this queue,
 *               false otherwise.
 * @supports_sync_stream: True if queue supports sync stream
 */
struct hw_queue_properties {
        enum hl_queue_type      type;
        enum queue_cb_alloc_flags cb_alloc_flags;
        enum hl_collective_mode collective_mode;
        u8                      driver_only;
        u8                      supports_sync_stream;
};

/**
 * enum vm_type - virtual memory mapping request information.
 * @VM_TYPE_USERPTR: mapping of user memory to device virtual address.
 * @VM_TYPE_PHYS_PACK: mapping of DRAM memory to device virtual address.
 */
enum vm_type {
        VM_TYPE_USERPTR = 0x1,
        VM_TYPE_PHYS_PACK = 0x2
};

/**
 * enum mmu_op_flags - mmu operation relevant information.
 * @MMU_OP_USERPTR: operation on user memory (host resident).
 * @MMU_OP_PHYS_PACK: operation on DRAM (device resident).
 * @MMU_OP_CLEAR_MEMCACHE: operation has to clear memcache.
 * @MMU_OP_SKIP_LOW_CACHE_INV: operation is allowed to skip parts of cache invalidation.
 */
enum mmu_op_flags {
        MMU_OP_USERPTR = 0x1,
        MMU_OP_PHYS_PACK = 0x2,
        MMU_OP_CLEAR_MEMCACHE = 0x4,
        MMU_OP_SKIP_LOW_CACHE_INV = 0x8,
};


/**
 * enum hl_device_hw_state - H/W device state. use this to understand whether
 *                           to do reset before hw_init or not
 * @HL_DEVICE_HW_STATE_CLEAN: H/W state is clean. i.e. after hard reset
 * @HL_DEVICE_HW_STATE_DIRTY: H/W state is dirty. i.e. we started to execute
 *                            hw_init
 */
enum hl_device_hw_state {
        HL_DEVICE_HW_STATE_CLEAN = 0,
        HL_DEVICE_HW_STATE_DIRTY
};

#define HL_MMU_VA_ALIGNMENT_NOT_NEEDED 0

/**
 * struct hl_mmu_properties - ASIC specific MMU address translation properties.
 * @start_addr: virtual start address of the memory region.
 * @end_addr: virtual end address of the memory region.
 * @hop0_shift: shift of hop 0 mask.
 * @hop1_shift: shift of hop 1 mask.
 * @hop2_shift: shift of hop 2 mask.
 * @hop3_shift: shift of hop 3 mask.
 * @hop4_shift: shift of hop 4 mask.
 * @hop5_shift: shift of hop 5 mask.
 * @hop0_mask: mask to get the PTE address in hop 0.
 * @hop1_mask: mask to get the PTE address in hop 1.
 * @hop2_mask: mask to get the PTE address in hop 2.
 * @hop3_mask: mask to get the PTE address in hop 3.
 * @hop4_mask: mask to get the PTE address in hop 4.
 * @hop5_mask: mask to get the PTE address in hop 5.
 * @last_mask: mask to get the bit indicating this is the last hop.
 * @page_size: default page size used to allocate memory.
 * @num_hops: The amount of hops supported by the translation table.
 * @host_resident: Should the MMU page table reside in host memory or in the
 *                 device DRAM.
 */
struct hl_mmu_properties {
        u64     start_addr;
        u64     end_addr;
        u64     hop0_shift;
        u64     hop1_shift;
        u64     hop2_shift;
        u64     hop3_shift;
        u64     hop4_shift;
        u64     hop5_shift;
        u64     hop0_mask;
        u64     hop1_mask;
        u64     hop2_mask;
        u64     hop3_mask;
        u64     hop4_mask;
        u64     hop5_mask;
        u64     last_mask;
        u32     page_size;
        u32     num_hops;
        u8      host_resident;
};

/**
 * struct hl_hints_range - hint addresses reserved va range.
 * @start_addr: start address of the va range.
 * @end_addr: end address of the va range.
 */
struct hl_hints_range {
        u64 start_addr;
        u64 end_addr;
};

/**
 * struct asic_fixed_properties - ASIC specific immutable properties.
 * @hw_queues_props: H/W queues properties.
 * @cpucp_info: received various information from CPU-CP regarding the H/W, e.g.
 *              available sensors.
 * @uboot_ver: F/W U-boot version.
 * @preboot_ver: F/W Preboot version.
 * @dmmu: DRAM MMU address translation properties.
 * @pmmu: PCI (host) MMU address translation properties.
 * @pmmu_huge: PCI (host) MMU address translation properties for memory
 *              allocated with huge pages.
 * @hints_dram_reserved_va_range: dram hint addresses reserved range.
 * @hints_host_reserved_va_range: host hint addresses reserved range.
 * @hints_host_hpage_reserved_va_range: host huge page hint addresses reserved
 *                                      range.
 * @sram_base_address: SRAM physical start address.
 * @sram_end_address: SRAM physical end address.
 * @sram_user_base_address - SRAM physical start address for user access.
 * @dram_base_address: DRAM physical start address.
 * @dram_end_address: DRAM physical end address.
 * @dram_user_base_address: DRAM physical start address for user access.
 * @dram_size: DRAM total size.
 * @dram_pci_bar_size: size of PCI bar towards DRAM.
 * @max_power_default: max power of the device after reset
 * @dc_power_default: power consumed by the device in mode idle.
 * @dram_size_for_default_page_mapping: DRAM size needed to map to avoid page
 *                                      fault.
 * @pcie_dbi_base_address: Base address of the PCIE_DBI block.
 * @pcie_aux_dbi_reg_addr: Address of the PCIE_AUX DBI register.
 * @mmu_pgt_addr: base physical address in DRAM of MMU page tables.
 * @mmu_dram_default_page_addr: DRAM default page physical address.
 * @cb_va_start_addr: virtual start address of command buffers which are mapped
 *                    to the device's MMU.
 * @cb_va_end_addr: virtual end address of command buffers which are mapped to
 *                  the device's MMU.
 * @dram_hints_align_mask: dram va hint addresses alignment mask which is used
 *                  for hints validity check.
 * device_dma_offset_for_host_access: the offset to add to host DMA addresses
 *                                    to enable the device to access them.
 * @max_freq_value: current max clk frequency.
 * @clk_pll_index: clock PLL index that specify which PLL determines the clock
 *                 we display to the user
 * @mmu_pgt_size: MMU page tables total size.
 * @mmu_pte_size: PTE size in MMU page tables.
 * @mmu_hop_table_size: MMU hop table size.
 * @mmu_hop0_tables_total_size: total size of MMU hop0 tables.
 * @dram_page_size: page size for MMU DRAM allocation.
 * @cfg_size: configuration space size on SRAM.
 * @sram_size: total size of SRAM.
 * @max_asid: maximum number of open contexts (ASIDs).
 * @num_of_events: number of possible internal H/W IRQs.
 * @psoc_pci_pll_nr: PCI PLL NR value.
 * @psoc_pci_pll_nf: PCI PLL NF value.
 * @psoc_pci_pll_od: PCI PLL OD value.
 * @psoc_pci_pll_div_factor: PCI PLL DIV FACTOR 1 value.
 * @psoc_timestamp_frequency: frequency of the psoc timestamp clock.
 * @high_pll: high PLL frequency used by the device.
 * @cb_pool_cb_cnt: number of CBs in the CB pool.
 * @cb_pool_cb_size: size of each CB in the CB pool.
 * @max_pending_cs: maximum of concurrent pending command submissions
 * @max_queues: maximum amount of queues in the system
 * @fw_preboot_cpu_boot_dev_sts0: bitmap representation of preboot cpu
 *                                capabilities reported by FW, bit description
 *                                can be found in CPU_BOOT_DEV_STS0
 * @fw_preboot_cpu_boot_dev_sts1: bitmap representation of preboot cpu
 *                                capabilities reported by FW, bit description
 *                                can be found in CPU_BOOT_DEV_STS1
 * @fw_bootfit_cpu_boot_dev_sts0: bitmap representation of boot cpu security
 *                                status reported by FW, bit description can be
 *                                found in CPU_BOOT_DEV_STS0
 * @fw_bootfit_cpu_boot_dev_sts1: bitmap representation of boot cpu security
 *                                status reported by FW, bit description can be
 *                                found in CPU_BOOT_DEV_STS1
 * @fw_app_cpu_boot_dev_sts0: bitmap representation of application security
 *                            status reported by FW, bit description can be
 *                            found in CPU_BOOT_DEV_STS0
 * @fw_app_cpu_boot_dev_sts1: bitmap representation of application security
 *                            status reported by FW, bit description can be
 *                            found in CPU_BOOT_DEV_STS1
 * @collective_first_sob: first sync object available for collective use
 * @collective_first_mon: first monitor available for collective use
 * @sync_stream_first_sob: first sync object available for sync stream use
 * @sync_stream_first_mon: first monitor available for sync stream use
 * @first_available_user_sob: first sob available for the user
 * @first_available_user_mon: first monitor available for the user
 * @first_available_user_msix_interrupt: first available msix interrupt
 *                                       reserved for the user
 * @first_available_cq: first available CQ for the user.
 * @user_interrupt_count: number of user interrupts.
 * @server_type: Server type that the ASIC is currently installed in.
 *               The value is according to enum hl_server_type in uapi file.
 * @tpc_enabled_mask: which TPCs are enabled.
 * @completion_queues_count: number of completion queues.
 * @fw_security_enabled: true if security measures are enabled in firmware,
 *                       false otherwise
 * @fw_cpu_boot_dev_sts0_valid: status bits are valid and can be fetched from
 *                              BOOT_DEV_STS0
 * @fw_cpu_boot_dev_sts1_valid: status bits are valid and can be fetched from
 *                              BOOT_DEV_STS1
 * @dram_supports_virtual_memory: is there an MMU towards the DRAM
 * @hard_reset_done_by_fw: true if firmware is handling hard reset flow
 * @num_functional_hbms: number of functional HBMs in each DCORE.
 * @hints_range_reservation: device support hint addresses range reservation.
 * @iatu_done_by_fw: true if iATU configuration is being done by FW.
 * @dynamic_fw_load: is dynamic FW load is supported.
 * @gic_interrupts_enable: true if FW is not blocking GIC controller,
 *                         false otherwise.
 * @use_get_power_for_reset_history: To support backward compatibility for Goya
 *                                   and Gaudi
 * @supports_soft_reset: is soft reset supported.
 * @allow_inference_soft_reset: true if the ASIC supports soft reset that is
 *                              initiated by user or TDR. This is only true
 *                              in inference ASICs, as there is no real-world
 *                              use-case of doing soft-reset in training (due
 *                              to the fact that training runs on multiple
 *                              devices)
 */
struct asic_fixed_properties {
        struct hw_queue_properties      *hw_queues_props;
        struct cpucp_info               cpucp_info;
        char                            uboot_ver[VERSION_MAX_LEN];
        char                            preboot_ver[VERSION_MAX_LEN];
        struct hl_mmu_properties        dmmu;
        struct hl_mmu_properties        pmmu;
        struct hl_mmu_properties        pmmu_huge;
        struct hl_hints_range           hints_dram_reserved_va_range;
        struct hl_hints_range           hints_host_reserved_va_range;
        struct hl_hints_range           hints_host_hpage_reserved_va_range;
        u64                             sram_base_address;
        u64                             sram_end_address;
        u64                             sram_user_base_address;
        u64                             dram_base_address;
        u64                             dram_end_address;
        u64                             dram_user_base_address;
        u64                             dram_size;
        u64                             dram_pci_bar_size;
        u64                             max_power_default;
        u64                             dc_power_default;
        u64                             dram_size_for_default_page_mapping;
        u64                             pcie_dbi_base_address;
        u64                             pcie_aux_dbi_reg_addr;
        u64                             mmu_pgt_addr;
        u64                             mmu_dram_default_page_addr;
        u64                             cb_va_start_addr;
        u64                             cb_va_end_addr;
        u64                             dram_hints_align_mask;
        u64                             device_dma_offset_for_host_access;
        u64                             max_freq_value;
        u32                             clk_pll_index;
        u32                             mmu_pgt_size;
        u32                             mmu_pte_size;
        u32                             mmu_hop_table_size;
        u32                             mmu_hop0_tables_total_size;
        u32                             dram_page_size;
        u32                             cfg_size;
        u32                             sram_size;
        u32                             max_asid;
        u32                             num_of_events;
        u32                             psoc_pci_pll_nr;
        u32                             psoc_pci_pll_nf;
        u32                             psoc_pci_pll_od;
        u32                             psoc_pci_pll_div_factor;
        u32                             psoc_timestamp_frequency;
        u32                             high_pll;
        u32                             cb_pool_cb_cnt;
        u32                             cb_pool_cb_size;
        u32                             max_pending_cs;
        u32                             max_queues;
        u32                             fw_preboot_cpu_boot_dev_sts0;
        u32                             fw_preboot_cpu_boot_dev_sts1;
        u32                             fw_bootfit_cpu_boot_dev_sts0;
        u32                             fw_bootfit_cpu_boot_dev_sts1;
        u32                             fw_app_cpu_boot_dev_sts0;
        u32                             fw_app_cpu_boot_dev_sts1;
        u16                             collective_first_sob;
        u16                             collective_first_mon;
        u16                             sync_stream_first_sob;
        u16                             sync_stream_first_mon;
        u16                             first_available_user_sob[HL_MAX_DCORES];
        u16                             first_available_user_mon[HL_MAX_DCORES];
        u16                             first_available_user_msix_interrupt;
        u16                             first_available_cq[HL_MAX_DCORES];
        u16                             user_interrupt_count;
        u16                             server_type;
        u8                              tpc_enabled_mask;
        u8                              completion_queues_count;
        u8                              fw_security_enabled;
        u8                              fw_cpu_boot_dev_sts0_valid;
        u8                              fw_cpu_boot_dev_sts1_valid;
        u8                              dram_supports_virtual_memory;
        u8                              hard_reset_done_by_fw;
        u8                              num_functional_hbms;
        u8                              hints_range_reservation;
        u8                              iatu_done_by_fw;
        u8                              dynamic_fw_load;
        u8                              gic_interrupts_enable;
        u8                              use_get_power_for_reset_history;
        u8                              supports_soft_reset;
        u8                              allow_inference_soft_reset;
};

/**
 * struct hl_fence - software synchronization primitive
 * @completion: fence is implemented using completion
 * @refcount: refcount for this fence
 * @cs_sequence: sequence of the corresponding command submission
 * @stream_master_qid_map: streams masters QID bitmap to represent all streams
 *                         masters QIDs that multi cs is waiting on
 * @error: mark this fence with error
 * @timestamp: timestamp upon completion
 * @mcs_handling_done: indicates that corresponding command submission has
 *                     finished msc handling, this does not mean it was part
 *                     of the mcs
 */
struct hl_fence {
        struct completion       completion;
        struct kref             refcount;
        u64                     cs_sequence;
        u32                     stream_master_qid_map;
        int                     error;
        ktime_t                 timestamp;
        u8                      mcs_handling_done;
};

/**
 * struct hl_cs_compl - command submission completion object.
 * @base_fence: hl fence object.
 * @lock: spinlock to protect fence.
 * @hdev: habanalabs device structure.
 * @hw_sob: the H/W SOB used in this signal/wait CS.
 * @encaps_sig_hdl: encaps signals hanlder.
 * @cs_seq: command submission sequence number.
 * @type: type of the CS - signal/wait.
 * @sob_val: the SOB value that is used in this signal/wait CS.
 * @sob_group: the SOB group that is used in this collective wait CS.
 * @encaps_signals: indication whether it's a completion object of cs with
 * encaps signals or not.
 */
struct hl_cs_compl {
        struct hl_fence         base_fence;
        spinlock_t              lock;
        struct hl_device        *hdev;
        struct hl_hw_sob        *hw_sob;
        struct hl_cs_encaps_sig_handle *encaps_sig_hdl;
        u64                     cs_seq;
        enum hl_cs_type         type;
        u16                     sob_val;
        u16                     sob_group;
        bool                    encaps_signals;
};

/*
 * Command Buffers
 */

/**
 * struct hl_cb_mgr - describes a Command Buffer Manager.
 * @cb_lock: protects cb_handles.
 * @cb_handles: an idr to hold all command buffer handles.
 */
struct hl_cb_mgr {
        spinlock_t              cb_lock;
        struct idr              cb_handles; /* protected by cb_lock */
};

/**
 * struct hl_cb - describes a Command Buffer.
 * @refcount: reference counter for usage of the CB.
 * @hdev: pointer to device this CB belongs to.
 * @ctx: pointer to the CB owner's context.
 * @lock: spinlock to protect mmap flows.
 * @debugfs_list: node in debugfs list of command buffers.
 * @pool_list: node in pool list of command buffers.
 * @va_block_list: list of virtual addresses blocks of the CB if it is mapped to
 *                 the device's MMU.
 * @id: the CB's ID.
 * @kernel_address: Holds the CB's kernel virtual address.
 * @bus_address: Holds the CB's DMA address.
 * @mmap_size: Holds the CB's size that was mmaped.
 * @size: holds the CB's size.
 * @cs_cnt: holds number of CS that this CB participates in.
 * @mmap: true if the CB is currently mmaped to user.
 * @is_pool: true if CB was acquired from the pool, false otherwise.
 * @is_internal: internaly allocated
 * @is_mmu_mapped: true if the CB is mapped to the device's MMU.
 */
struct hl_cb {
        struct kref             refcount;
        struct hl_device        *hdev;
        struct hl_ctx           *ctx;
        spinlock_t              lock;
        struct list_head        debugfs_list;
        struct list_head        pool_list;
        struct list_head        va_block_list;
        u64                     id;
        void                    *kernel_address;
        dma_addr_t              bus_address;
        u32                     mmap_size;
        u32                     size;
        atomic_t                cs_cnt;
        u8                      mmap;
        u8                      is_pool;
        u8                      is_internal;
        u8                      is_mmu_mapped;
};


/*
 * QUEUES
 */

struct hl_cs;
struct hl_cs_job;

/* Queue length of external and HW queues */
#define HL_QUEUE_LENGTH                 4096
#define HL_QUEUE_SIZE_IN_BYTES          (HL_QUEUE_LENGTH * HL_BD_SIZE)

#if (HL_MAX_JOBS_PER_CS > HL_QUEUE_LENGTH)
#error "HL_QUEUE_LENGTH must be greater than HL_MAX_JOBS_PER_CS"
#endif

/* HL_CQ_LENGTH is in units of struct hl_cq_entry */
#define HL_CQ_LENGTH                    HL_QUEUE_LENGTH
#define HL_CQ_SIZE_IN_BYTES             (HL_CQ_LENGTH * HL_CQ_ENTRY_SIZE)

/* Must be power of 2 */
#define HL_EQ_LENGTH                    64
#define HL_EQ_SIZE_IN_BYTES             (HL_EQ_LENGTH * HL_EQ_ENTRY_SIZE)

/* Host <-> CPU-CP shared memory size */
#define HL_CPU_ACCESSIBLE_MEM_SIZE      SZ_2M

/**
 * struct hl_sync_stream_properties -
 *     describes a H/W queue sync stream properties
 * @hw_sob: array of the used H/W SOBs by this H/W queue.
 * @next_sob_val: the next value to use for the currently used SOB.
 * @base_sob_id: the base SOB id of the SOBs used by this queue.
 * @base_mon_id: the base MON id of the MONs used by this queue.
 * @collective_mstr_mon_id: the MON ids of the MONs used by this master queue
 *                          in order to sync with all slave queues.
 * @collective_slave_mon_id: the MON id used by this slave queue in order to
 *                           sync with its master queue.
 * @collective_sob_id: current SOB id used by this collective slave queue
 *                     to signal its collective master queue upon completion.
 * @curr_sob_offset: the id offset to the currently used SOB from the
 *                   HL_RSVD_SOBS that are being used by this queue.
 */
struct hl_sync_stream_properties {
        struct hl_hw_sob hw_sob[HL_RSVD_SOBS];
        u16             next_sob_val;
        u16             base_sob_id;
        u16             base_mon_id;
        u16             collective_mstr_mon_id[HL_COLLECTIVE_RSVD_MSTR_MONS];
        u16             collective_slave_mon_id;
        u16             collective_sob_id;
        u8              curr_sob_offset;
};

/**
 * struct hl_encaps_signals_mgr - describes sync stream encapsulated signals
 * handlers manager
 * @lock: protects handles.
 * @handles: an idr to hold all encapsulated signals handles.
 */
struct hl_encaps_signals_mgr {
        spinlock_t              lock;
        struct idr              handles;
};

/**
 * struct hl_hw_queue - describes a H/W transport queue.
 * @shadow_queue: pointer to a shadow queue that holds pointers to jobs.
 * @sync_stream_prop: sync stream queue properties
 * @queue_type: type of queue.
 * @collective_mode: collective mode of current queue
 * @kernel_address: holds the queue's kernel virtual address.
 * @bus_address: holds the queue's DMA address.
 * @pi: holds the queue's pi value.
 * @ci: holds the queue's ci value, AS CALCULATED BY THE DRIVER (not real ci).
 * @hw_queue_id: the id of the H/W queue.
 * @cq_id: the id for the corresponding CQ for this H/W queue.
 * @msi_vec: the IRQ number of the H/W queue.
 * @int_queue_len: length of internal queue (number of entries).
 * @valid: is the queue valid (we have array of 32 queues, not all of them
 *         exist).
 * @supports_sync_stream: True if queue supports sync stream
 */
struct hl_hw_queue {
        struct hl_cs_job                        **shadow_queue;
        struct hl_sync_stream_properties        sync_stream_prop;
        enum hl_queue_type                      queue_type;
        enum hl_collective_mode                 collective_mode;
        void                                    *kernel_address;
        dma_addr_t                              bus_address;
        u32                                     pi;
        atomic_t                                ci;
        u32                                     hw_queue_id;
        u32                                     cq_id;
        u32                                     msi_vec;
        u16                                     int_queue_len;
        u8                                      valid;
        u8                                      supports_sync_stream;
};

/**
 * struct hl_cq - describes a completion queue
 * @hdev: pointer to the device structure
 * @kernel_address: holds the queue's kernel virtual address
 * @bus_address: holds the queue's DMA address
 * @cq_idx: completion queue index in array
 * @hw_queue_id: the id of the matching H/W queue
 * @ci: ci inside the queue
 * @pi: pi inside the queue
 * @free_slots_cnt: counter of free slots in queue
 */
struct hl_cq {
        struct hl_device        *hdev;
        void                    *kernel_address;
        dma_addr_t              bus_address;
        u32                     cq_idx;
        u32                     hw_queue_id;
        u32                     ci;
        u32                     pi;
        atomic_t                free_slots_cnt;
};

/**
 * struct hl_user_interrupt - holds user interrupt information
 * @hdev: pointer to the device structure
 * @wait_list_head: head to the list of user threads pending on this interrupt
 * @wait_list_lock: protects wait_list_head
 * @interrupt_id: msix interrupt id
 */
struct hl_user_interrupt {
        struct hl_device        *hdev;
        struct list_head        wait_list_head;
        spinlock_t              wait_list_lock;
        u32                     interrupt_id;
};

/**
 * struct hl_user_pending_interrupt - holds a context to a user thread
 *                                    pending on an interrupt
 * @wait_list_node: node in the list of user threads pending on an interrupt
 * @fence: hl fence object for interrupt completion
 * @cq_target_value: CQ target value
 * @cq_kernel_addr: CQ kernel address, to be used in the cq interrupt
 *                  handler for taget value comparison
 */
struct hl_user_pending_interrupt {
        struct list_head        wait_list_node;
        struct hl_fence         fence;
        u64                     cq_target_value;
        u64                     *cq_kernel_addr;
};

/**
 * struct hl_eq - describes the event queue (single one per device)
 * @hdev: pointer to the device structure
 * @kernel_address: holds the queue's kernel virtual address
 * @bus_address: holds the queue's DMA address
 * @ci: ci inside the queue
 * @prev_eqe_index: the index of the previous event queue entry. The index of
 *                  the current entry's index must be +1 of the previous one.
 * @check_eqe_index: do we need to check the index of the current entry vs. the
 *                   previous one. This is for backward compatibility with older
 *                   firmwares
 */
struct hl_eq {
        struct hl_device        *hdev;
        void                    *kernel_address;
        dma_addr_t              bus_address;
        u32                     ci;
        u32                     prev_eqe_index;
        bool                    check_eqe_index;
};


/*
 * ASICs
 */

/**
 * enum hl_asic_type - supported ASIC types.
 * @ASIC_INVALID: Invalid ASIC type.
 * @ASIC_GOYA: Goya device.
 * @ASIC_GAUDI: Gaudi device.
 * @ASIC_GAUDI_SEC: Gaudi secured device (HL-2000).
 */
enum hl_asic_type {
        ASIC_INVALID,
        ASIC_GOYA,
        ASIC_GAUDI,
        ASIC_GAUDI_SEC
};

struct hl_cs_parser;

/**
 * enum hl_pm_mng_profile - power management profile.
 * @PM_AUTO: internal clock is set by the Linux driver.
 * @PM_MANUAL: internal clock is set by the user.
 * @PM_LAST: last power management type.
 */
enum hl_pm_mng_profile {
        PM_AUTO = 1,
        PM_MANUAL,
        PM_LAST
};

/**
 * enum hl_pll_frequency - PLL frequency.
 * @PLL_HIGH: high frequency.
 * @PLL_LOW: low frequency.
 * @PLL_LAST: last frequency values that were configured by the user.
 */
enum hl_pll_frequency {
        PLL_HIGH = 1,
        PLL_LOW,
        PLL_LAST
};

#define PLL_REF_CLK 50

enum div_select_defs {
        DIV_SEL_REF_CLK = 0,
        DIV_SEL_PLL_CLK = 1,
        DIV_SEL_DIVIDED_REF = 2,
        DIV_SEL_DIVIDED_PLL = 3,
};

enum pci_region {
        PCI_REGION_CFG,
        PCI_REGION_SRAM,
        PCI_REGION_DRAM,
        PCI_REGION_SP_SRAM,
        PCI_REGION_NUMBER,
};

/**
 * struct pci_mem_region - describe memory region in a PCI bar
 * @region_base: region base address
 * @region_size: region size
 * @bar_size: size of the BAR
 * @offset_in_bar: region offset into the bar
 * @bar_id: bar ID of the region
 * @used: if used 1, otherwise 0
 */
struct pci_mem_region {
        u64 region_base;
        u64 region_size;
        u64 bar_size;
        u64 offset_in_bar;
        u8 bar_id;
        u8 used;
};

/**
 * struct static_fw_load_mgr - static FW load manager
 * @preboot_version_max_off: max offset to preboot version
 * @boot_fit_version_max_off: max offset to boot fit version
 * @kmd_msg_to_cpu_reg: register address for KDM->CPU messages
 * @cpu_cmd_status_to_host_reg: register address for CPU command status response
 * @cpu_boot_status_reg: boot status register
 * @cpu_boot_dev_status0_reg: boot device status register 0
 * @cpu_boot_dev_status1_reg: boot device status register 1
 * @boot_err0_reg: boot error register 0
 * @boot_err1_reg: boot error register 1
 * @preboot_version_offset_reg: SRAM offset to preboot version register
 * @boot_fit_version_offset_reg: SRAM offset to boot fit version register
 * @sram_offset_mask: mask for getting offset into the SRAM
 * @cpu_reset_wait_msec: used when setting WFE via kmd_msg_to_cpu_reg
 */
struct static_fw_load_mgr {
        u64 preboot_version_max_off;
        u64 boot_fit_version_max_off;
        u32 kmd_msg_to_cpu_reg;
        u32 cpu_cmd_status_to_host_reg;
        u32 cpu_boot_status_reg;
        u32 cpu_boot_dev_status0_reg;
        u32 cpu_boot_dev_status1_reg;
        u32 boot_err0_reg;
        u32 boot_err1_reg;
        u32 preboot_version_offset_reg;
        u32 boot_fit_version_offset_reg;
        u32 sram_offset_mask;
        u32 cpu_reset_wait_msec;
};

/**
 * struct fw_response - FW response to LKD command
 * @ram_offset: descriptor offset into the RAM
 * @ram_type: RAM type containing the descriptor (SRAM/DRAM)
 * @status: command status
 */
struct fw_response {
        u32 ram_offset;
        u8 ram_type;
        u8 status;
};

/**
 * struct dynamic_fw_load_mgr - dynamic FW load manager
 * @response: FW to LKD response
 * @comm_desc: the communication descriptor with FW
 * @image_region: region to copy the FW image to
 * @fw_image_size: size of FW image to load
 * @wait_for_bl_timeout: timeout for waiting for boot loader to respond
 * @fw_desc_valid: true if FW descriptor has been validated and hence the data can be used
 */
struct dynamic_fw_load_mgr {
        struct fw_response response;
        struct lkd_fw_comms_desc comm_desc;
        struct pci_mem_region *image_region;
        size_t fw_image_size;
        u32 wait_for_bl_timeout;
        bool fw_desc_valid;
};

/**
 * struct fw_image_props - properties of FW image
 * @image_name: name of the image
 * @src_off: offset in src FW to copy from
 * @copy_size: amount of bytes to copy (0 to copy the whole binary)
 */
struct fw_image_props {
        char *image_name;
        u32 src_off;
        u32 copy_size;
};

/**
 * struct fw_load_mgr - manager FW loading process
 * @dynamic_loader: specific structure for dynamic load
 * @static_loader: specific structure for static load
 * @boot_fit_img: boot fit image properties
 * @linux_img: linux image properties
 * @cpu_timeout: CPU response timeout in usec
 * @boot_fit_timeout: Boot fit load timeout in usec
 * @skip_bmc: should BMC be skipped
 * @sram_bar_id: SRAM bar ID
 * @dram_bar_id: DRAM bar ID
 * @fw_comp_loaded: bitmask of loaded FW components. set bit meaning loaded
 *                  component. values are set according to enum hl_fw_types.
 */
struct fw_load_mgr {
        union {
                struct dynamic_fw_load_mgr dynamic_loader;
                struct static_fw_load_mgr static_loader;
        };
        struct fw_image_props boot_fit_img;
        struct fw_image_props linux_img;
        u32 cpu_timeout;
        u32 boot_fit_timeout;
        u8 skip_bmc;
        u8 sram_bar_id;
        u8 dram_bar_id;
        u8 fw_comp_loaded;
};

/**
 * struct hl_asic_funcs - ASIC specific functions that are can be called from
 *                        common code.
 * @early_init: sets up early driver state (pre sw_init), doesn't configure H/W.
 * @early_fini: tears down what was done in early_init.
 * @late_init: sets up late driver/hw state (post hw_init) - Optional.
 * @late_fini: tears down what was done in late_init (pre hw_fini) - Optional.
 * @sw_init: sets up driver state, does not configure H/W.
 * @sw_fini: tears down driver state, does not configure H/W.
 * @hw_init: sets up the H/W state.
 * @hw_fini: tears down the H/W state.
 * @halt_engines: halt engines, needed for reset sequence. This also disables
 *                interrupts from the device. Should be called before
 *                hw_fini and before CS rollback.
 * @suspend: handles IP specific H/W or SW changes for suspend.
 * @resume: handles IP specific H/W or SW changes for resume.
 * @mmap: maps a memory.
 * @ring_doorbell: increment PI on a given QMAN.
 * @pqe_write: Write the PQ entry to the PQ. This is ASIC-specific
 *             function because the PQs are located in different memory areas
 *             per ASIC (SRAM, DRAM, Host memory) and therefore, the method of
 *             writing the PQE must match the destination memory area
 *             properties.
 * @asic_dma_alloc_coherent: Allocate coherent DMA memory by calling
 *                           dma_alloc_coherent(). This is ASIC function because
 *                           its implementation is not trivial when the driver
 *                           is loaded in simulation mode (not upstreamed).
 * @asic_dma_free_coherent:  Free coherent DMA memory by calling
 *                           dma_free_coherent(). This is ASIC function because
 *                           its implementation is not trivial when the driver
 *                           is loaded in simulation mode (not upstreamed).
 * @scrub_device_mem: Scrub device memory given an address and size
 * @get_int_queue_base: get the internal queue base address.
 * @test_queues: run simple test on all queues for sanity check.
 * @asic_dma_pool_zalloc: small DMA allocation of coherent memory from DMA pool.
 *                        size of allocation is HL_DMA_POOL_BLK_SIZE.
 * @asic_dma_pool_free: free small DMA allocation from pool.
 * @cpu_accessible_dma_pool_alloc: allocate CPU PQ packet from DMA pool.
 * @cpu_accessible_dma_pool_free: free CPU PQ packet from DMA pool.
 * @hl_dma_unmap_sg: DMA unmap scatter-gather list.
 * @cs_parser: parse Command Submission.
 * @asic_dma_map_sg: DMA map scatter-gather list.
 * @get_dma_desc_list_size: get number of LIN_DMA packets required for CB.
 * @add_end_of_cb_packets: Add packets to the end of CB, if device requires it.
 * @update_eq_ci: update event queue CI.
 * @context_switch: called upon ASID context switch.
 * @restore_phase_topology: clear all SOBs amd MONs.
 * @debugfs_read32: debug interface for reading u32 from DRAM/SRAM/Host memory.
 * @debugfs_write32: debug interface for writing u32 to DRAM/SRAM/Host memory.
 * @debugfs_read64: debug interface for reading u64 from DRAM/SRAM/Host memory.
 * @debugfs_write64: debug interface for writing u64 to DRAM/SRAM/Host memory.
 * @debugfs_read_dma: debug interface for reading up to 2MB from the device's
 *                    internal memory via DMA engine.
 * @add_device_attr: add ASIC specific device attributes.
 * @handle_eqe: handle event queue entry (IRQ) from CPU-CP.
 * @set_pll_profile: change PLL profile (manual/automatic).
 * @get_events_stat: retrieve event queue entries histogram.
 * @read_pte: read MMU page table entry from DRAM.
 * @write_pte: write MMU page table entry to DRAM.
 * @mmu_invalidate_cache: flush MMU STLB host/DRAM cache, either with soft
 *                        (L1 only) or hard (L0 & L1) flush.
 * @mmu_invalidate_cache_range: flush specific MMU STLB cache lines with
 *                              ASID-VA-size mask.
 * @send_heartbeat: send is-alive packet to CPU-CP and verify response.
 * @set_clock_gating: enable/disable clock gating per engine according to
 *                    clock gating mask in hdev
 * @disable_clock_gating: disable clock gating completely
 * @debug_coresight: perform certain actions on Coresight for debugging.
 * @is_device_idle: return true if device is idle, false otherwise.
 * @non_hard_reset_late_init: perform certain actions needed after a reset which is not hard-reset
 * @hw_queues_lock: acquire H/W queues lock.
 * @hw_queues_unlock: release H/W queues lock.
 * @get_pci_id: retrieve PCI ID.
 * @get_eeprom_data: retrieve EEPROM data from F/W.
 * @send_cpu_message: send message to F/W. If the message is timedout, the
 *                    driver will eventually reset the device. The timeout can
 *                    be determined by the calling function or it can be 0 and
 *                    then the timeout is the default timeout for the specific
 *                    ASIC
 * @get_hw_state: retrieve the H/W state
 * @pci_bars_map: Map PCI BARs.
 * @init_iatu: Initialize the iATU unit inside the PCI controller.
 * @rreg: Read a register. Needed for simulator support.
 * @wreg: Write a register. Needed for simulator support.
 * @halt_coresight: stop the ETF and ETR traces.
 * @ctx_init: context dependent initialization.
 * @ctx_fini: context dependent cleanup.
 * @get_clk_rate: Retrieve the ASIC current and maximum clock rate in MHz
 * @get_queue_id_for_cq: Get the H/W queue id related to the given CQ index.
 * @load_firmware_to_device: load the firmware to the device's memory
 * @load_boot_fit_to_device: load boot fit to device's memory
 * @get_signal_cb_size: Get signal CB size.
 * @get_wait_cb_size: Get wait CB size.
 * @gen_signal_cb: Generate a signal CB.
 * @gen_wait_cb: Generate a wait CB.
 * @reset_sob: Reset a SOB.
 * @reset_sob_group: Reset SOB group
 * @set_dma_mask_from_fw: set the DMA mask in the driver according to the
 *                        firmware configuration
 * @get_device_time: Get the device time.
 * @collective_wait_init_cs: Generate collective master/slave packets
 *                           and place them in the relevant cs jobs
 * @collective_wait_create_jobs: allocate collective wait cs jobs
 * @scramble_addr: Routine to scramble the address prior of mapping it
 *                 in the MMU.
 * @descramble_addr: Routine to de-scramble the address prior of
 *                   showing it to users.
 * @ack_protection_bits_errors: ack and dump all security violations
 * @get_hw_block_id: retrieve a HW block id to be used by the user to mmap it.
 *                   also returns the size of the block if caller supplies
 *                   a valid pointer for it
 * @hw_block_mmap: mmap a HW block with a given id.
 * @enable_events_from_fw: send interrupt to firmware to notify them the
 *                         driver is ready to receive asynchronous events. This
 *                         function should be called during the first init and
 *                         after every hard-reset of the device
 * @get_msi_info: Retrieve asic-specific MSI ID of the f/w async event
 * @map_pll_idx_to_fw_idx: convert driver specific per asic PLL index to
 *                         generic f/w compatible PLL Indexes
 * @init_firmware_loader: initialize data for FW loader.
 * @init_cpu_scrambler_dram: Enable CPU specific DRAM scrambling
 * @state_dump_init: initialize constants required for state dump
 * @get_sob_addr: get SOB base address offset.
 * @set_pci_memory_regions: setting properties of PCI memory regions
 * @get_stream_master_qid_arr: get pointer to stream masters QID array
 */
struct hl_asic_funcs {
        int (*early_init)(struct hl_device *hdev);
        int (*early_fini)(struct hl_device *hdev);
        int (*late_init)(struct hl_device *hdev);
        void (*late_fini)(struct hl_device *hdev);
        int (*sw_init)(struct hl_device *hdev);
        int (*sw_fini)(struct hl_device *hdev);
        int (*hw_init)(struct hl_device *hdev);
        void (*hw_fini)(struct hl_device *hdev, bool hard_reset, bool fw_reset);
        void (*halt_engines)(struct hl_device *hdev, bool hard_reset, bool fw_reset);
        int (*suspend)(struct hl_device *hdev);
        int (*resume)(struct hl_device *hdev);
        int (*mmap)(struct hl_device *hdev, struct vm_area_struct *vma,
                        void *cpu_addr, dma_addr_t dma_addr, size_t size);
        void (*ring_doorbell)(struct hl_device *hdev, u32 hw_queue_id, u32 pi);
        void (*pqe_write)(struct hl_device *hdev, __le64 *pqe,
                        struct hl_bd *bd);
        void* (*asic_dma_alloc_coherent)(struct hl_device *hdev, size_t size,
                                        dma_addr_t *dma_handle, gfp_t flag);
        void (*asic_dma_free_coherent)(struct hl_device *hdev, size_t size,
                                        void *cpu_addr, dma_addr_t dma_handle);
        int (*scrub_device_mem)(struct hl_device *hdev, u64 addr, u64 size);
        void* (*get_int_queue_base)(struct hl_device *hdev, u32 queue_id,
                                dma_addr_t *dma_handle, u16 *queue_len);
        int (*test_queues)(struct hl_device *hdev);
        void* (*asic_dma_pool_zalloc)(struct hl_device *hdev, size_t size,
                                gfp_t mem_flags, dma_addr_t *dma_handle);
        void (*asic_dma_pool_free)(struct hl_device *hdev, void *vaddr,
                                dma_addr_t dma_addr);
        void* (*cpu_accessible_dma_pool_alloc)(struct hl_device *hdev,
                                size_t size, dma_addr_t *dma_handle);
        void (*cpu_accessible_dma_pool_free)(struct hl_device *hdev,
                                size_t size, void *vaddr);
        void (*hl_dma_unmap_sg)(struct hl_device *hdev,
                                struct scatterlist *sgl, int nents,
                                enum dma_data_direction dir);
        int (*cs_parser)(struct hl_device *hdev, struct hl_cs_parser *parser);
        int (*asic_dma_map_sg)(struct hl_device *hdev,
                                struct scatterlist *sgl, int nents,
                                enum dma_data_direction dir);
        u32 (*get_dma_desc_list_size)(struct hl_device *hdev,
                                        struct sg_table *sgt);
        void (*add_end_of_cb_packets)(struct hl_device *hdev,
                                        void *kernel_address, u32 len,
                                        u64 cq_addr, u32 cq_val, u32 msix_num,
                                        bool eb);
        void (*update_eq_ci)(struct hl_device *hdev, u32 val);
        int (*context_switch)(struct hl_device *hdev, u32 asid);
        void (*restore_phase_topology)(struct hl_device *hdev);
        int (*debugfs_read32)(struct hl_device *hdev, u64 addr,
                                bool user_address, u32 *val);
        int (*debugfs_write32)(struct hl_device *hdev, u64 addr,
                                bool user_address, u32 val);
        int (*debugfs_read64)(struct hl_device *hdev, u64 addr,
                                bool user_address, u64 *val);
        int (*debugfs_write64)(struct hl_device *hdev, u64 addr,
                                bool user_address, u64 val);
        int (*debugfs_read_dma)(struct hl_device *hdev, u64 addr, u32 size,
                                void *blob_addr);
        void (*add_device_attr)(struct hl_device *hdev,
                                struct attribute_group *dev_attr_grp);
        void (*handle_eqe)(struct hl_device *hdev,
                                struct hl_eq_entry *eq_entry);
        void (*set_pll_profile)(struct hl_device *hdev,
                        enum hl_pll_frequency freq);
        void* (*get_events_stat)(struct hl_device *hdev, bool aggregate,
                                u32 *size);
        u64 (*read_pte)(struct hl_device *hdev, u64 addr);
        void (*write_pte)(struct hl_device *hdev, u64 addr, u64 val);
        int (*mmu_invalidate_cache)(struct hl_device *hdev, bool is_hard,
                                        u32 flags);
        int (*mmu_invalidate_cache_range)(struct hl_device *hdev, bool is_hard,
                                u32 flags, u32 asid, u64 va, u64 size);
        int (*send_heartbeat)(struct hl_device *hdev);
        void (*set_clock_gating)(struct hl_device *hdev);
        void (*disable_clock_gating)(struct hl_device *hdev);
        int (*debug_coresight)(struct hl_device *hdev, struct hl_ctx *ctx, void *data);
        bool (*is_device_idle)(struct hl_device *hdev, u64 *mask_arr,
                                        u8 mask_len, struct seq_file *s);
        int (*non_hard_reset_late_init)(struct hl_device *hdev);
        void (*hw_queues_lock)(struct hl_device *hdev);
        void (*hw_queues_unlock)(struct hl_device *hdev);
        u32 (*get_pci_id)(struct hl_device *hdev);
        int (*get_eeprom_data)(struct hl_device *hdev, void *data,
                                size_t max_size);
        int (*send_cpu_message)(struct hl_device *hdev, u32 *msg,
                                u16 len, u32 timeout, u64 *result);
        int (*pci_bars_map)(struct hl_device *hdev);
        int (*init_iatu)(struct hl_device *hdev);
        u32 (*rreg)(struct hl_device *hdev, u32 reg);
        void (*wreg)(struct hl_device *hdev, u32 reg, u32 val);
        void (*halt_coresight)(struct hl_device *hdev, struct hl_ctx *ctx);
        int (*ctx_init)(struct hl_ctx *ctx);
        void (*ctx_fini)(struct hl_ctx *ctx);
        int (*get_clk_rate)(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk);
        u32 (*get_queue_id_for_cq)(struct hl_device *hdev, u32 cq_idx);
        int (*load_firmware_to_device)(struct hl_device *hdev);
        int (*load_boot_fit_to_device)(struct hl_device *hdev);
        u32 (*get_signal_cb_size)(struct hl_device *hdev);
        u32 (*get_wait_cb_size)(struct hl_device *hdev);
        u32 (*gen_signal_cb)(struct hl_device *hdev, void *data, u16 sob_id,
                        u32 size, bool eb);
        u32 (*gen_wait_cb)(struct hl_device *hdev,
                        struct hl_gen_wait_properties *prop);
        void (*reset_sob)(struct hl_device *hdev, void *data);
        void (*reset_sob_group)(struct hl_device *hdev, u16 sob_group);
        void (*set_dma_mask_from_fw)(struct hl_device *hdev);
        u64 (*get_device_time)(struct hl_device *hdev);
        int (*collective_wait_init_cs)(struct hl_cs *cs);
        int (*collective_wait_create_jobs)(struct hl_device *hdev,
                        struct hl_ctx *ctx, struct hl_cs *cs,
                        u32 wait_queue_id, u32 collective_engine_id,
                        u32 encaps_signal_offset);
        u64 (*scramble_addr)(struct hl_device *hdev, u64 addr);
        u64 (*descramble_addr)(struct hl_device *hdev, u64 addr);
        void (*ack_protection_bits_errors)(struct hl_device *hdev);
        int (*get_hw_block_id)(struct hl_device *hdev, u64 block_addr,
                                u32 *block_size, u32 *block_id);
        int (*hw_block_mmap)(struct hl_device *hdev, struct vm_area_struct *vma,
                        u32 block_id, u32 block_size);
        void (*enable_events_from_fw)(struct hl_device *hdev);
        void (*get_msi_info)(__le32 *table);
        int (*map_pll_idx_to_fw_idx)(u32 pll_idx);
        void (*init_firmware_loader)(struct hl_device *hdev);
        void (*init_cpu_scrambler_dram)(struct hl_device *hdev);
        void (*state_dump_init)(struct hl_device *hdev);
        u32 (*get_sob_addr)(struct hl_device *hdev, u32 sob_id);
        void (*set_pci_memory_regions)(struct hl_device *hdev);
        u32* (*get_stream_master_qid_arr)(void);
};


/*
 * CONTEXTS
 */

#define HL_KERNEL_ASID_ID       0

/**
 * enum hl_va_range_type - virtual address range type.
 * @HL_VA_RANGE_TYPE_HOST: range type of host pages
 * @HL_VA_RANGE_TYPE_HOST_HUGE: range type of host huge pages
 * @HL_VA_RANGE_TYPE_DRAM: range type of dram pages
 */
enum hl_va_range_type {
        HL_VA_RANGE_TYPE_HOST,
        HL_VA_RANGE_TYPE_HOST_HUGE,
        HL_VA_RANGE_TYPE_DRAM,
        HL_VA_RANGE_TYPE_MAX
};

/**
 * struct hl_va_range - virtual addresses range.
 * @lock: protects the virtual addresses list.
 * @list: list of virtual addresses blocks available for mappings.
 * @start_addr: range start address.
 * @end_addr: range end address.
 * @page_size: page size of this va range.
 */
struct hl_va_range {
        struct mutex            lock;
        struct list_head        list;
        u64                     start_addr;
        u64                     end_addr;
        u32                     page_size;
};

/**
 * struct hl_cs_counters_atomic - command submission counters
 * @out_of_mem_drop_cnt: dropped due to memory allocation issue
 * @parsing_drop_cnt: dropped due to error in packet parsing
 * @queue_full_drop_cnt: dropped due to queue full
 * @device_in_reset_drop_cnt: dropped due to device in reset
 * @max_cs_in_flight_drop_cnt: dropped due to maximum CS in-flight
 * @validation_drop_cnt: dropped due to error in validation
 */
struct hl_cs_counters_atomic {
        atomic64_t out_of_mem_drop_cnt;
        atomic64_t parsing_drop_cnt;
        atomic64_t queue_full_drop_cnt;
        atomic64_t device_in_reset_drop_cnt;
        atomic64_t max_cs_in_flight_drop_cnt;
        atomic64_t validation_drop_cnt;
};

/**
 * struct hl_dmabuf_priv - a dma-buf private object.
 * @dmabuf: pointer to dma-buf object.
 * @ctx: pointer to the dma-buf owner's context.
 * @phys_pg_pack: pointer to physical page pack if the dma-buf was exported for
 *                memory allocation handle.
 * @device_address: physical address of the device's memory. Relevant only
 *                  if phys_pg_pack is NULL (dma-buf was exported from address).
 *                  The total size can be taken from the dmabuf object.
 */
struct hl_dmabuf_priv {
        struct dma_buf                  *dmabuf;
        struct hl_ctx                   *ctx;
        struct hl_vm_phys_pg_pack       *phys_pg_pack;
        uint64_t                        device_address;
};

/**
 * struct hl_ctx - user/kernel context.
 * @mem_hash: holds mapping from virtual address to virtual memory area
 *              descriptor (hl_vm_phys_pg_list or hl_userptr).
 * @mmu_shadow_hash: holds a mapping from shadow address to pgt_info structure.
 * @hpriv: pointer to the private (Kernel Driver) data of the process (fd).
 * @hdev: pointer to the device structure.
 * @refcount: reference counter for the context. Context is released only when
 *              this hits 0l. It is incremented on CS and CS_WAIT.
 * @cs_pending: array of hl fence objects representing pending CS.
 * @va_range: holds available virtual addresses for host and dram mappings.
 * @mem_hash_lock: protects the mem_hash.
 * @mmu_lock: protects the MMU page tables. Any change to the PGT, modifying the
 *            MMU hash or walking the PGT requires talking this lock.
 * @hw_block_list_lock: protects the HW block memory list.
 * @debugfs_list: node in debugfs list of contexts.
 * @hw_block_mem_list: list of HW block virtual mapped addresses.
 * @cs_counters: context command submission counters.
 * @cb_va_pool: device VA pool for command buffers which are mapped to the
 *              device's MMU.
 * @sig_mgr: encaps signals handle manager.
 * @cs_sequence: sequence number for CS. Value is assigned to a CS and passed
 *                      to user so user could inquire about CS. It is used as
 *                      index to cs_pending array.
 * @dram_default_hops: array that holds all hops addresses needed for default
 *                     DRAM mapping.
 * @cs_lock: spinlock to protect cs_sequence.
 * @dram_phys_mem: amount of used physical DRAM memory by this context.
 * @thread_ctx_switch_token: token to prevent multiple threads of the same
 *                              context from running the context switch phase.
 *                              Only a single thread should run it.
 * @thread_ctx_switch_wait_token: token to prevent the threads that didn't run
 *                              the context switch phase from moving to their
 *                              execution phase before the context switch phase
 *                              has finished.
 * @asid: context's unique address space ID in the device's MMU.
 * @handle: context's opaque handle for user
 */
struct hl_ctx {
        DECLARE_HASHTABLE(mem_hash, MEM_HASH_TABLE_BITS);
        DECLARE_HASHTABLE(mmu_shadow_hash, MMU_HASH_TABLE_BITS);
        struct hl_fpriv                 *hpriv;
        struct hl_device                *hdev;
        struct kref                     refcount;
        struct hl_fence                 **cs_pending;
        struct hl_va_range              *va_range[HL_VA_RANGE_TYPE_MAX];
        struct mutex                    mem_hash_lock;
        struct mutex                    mmu_lock;
        struct mutex                    hw_block_list_lock;
        struct list_head                debugfs_list;
        struct list_head                hw_block_mem_list;
        struct hl_cs_counters_atomic    cs_counters;
        struct gen_pool                 *cb_va_pool;
        struct hl_encaps_signals_mgr    sig_mgr;
        u64                             cs_sequence;
        u64                             *dram_default_hops;
        spinlock_t                      cs_lock;
        atomic64_t                      dram_phys_mem;
        atomic_t                        thread_ctx_switch_token;
        u32                             thread_ctx_switch_wait_token;
        u32                             asid;
        u32                             handle;
};

/**
 * struct hl_ctx_mgr - for handling multiple contexts.
 * @ctx_lock: protects ctx_handles.
 * @ctx_handles: idr to hold all ctx handles.
 */
struct hl_ctx_mgr {
        struct mutex            ctx_lock;
        struct idr              ctx_handles;
};



/*
 * COMMAND SUBMISSIONS
 */

/**
 * struct hl_userptr - memory mapping chunk information
 * @vm_type: type of the VM.
 * @job_node: linked-list node for hanging the object on the Job's list.
 * @pages: pointer to struct page array
 * @npages: size of @pages array
 * @sgt: pointer to the scatter-gather table that holds the pages.
 * @dir: for DMA unmapping, the direction must be supplied, so save it.
 * @debugfs_list: node in debugfs list of command submissions.
 * @pid: the pid of the user process owning the memory
 * @addr: user-space virtual address of the start of the memory area.
 * @size: size of the memory area to pin & map.
 * @dma_mapped: true if the SG was mapped to DMA addresses, false otherwise.
 */
struct hl_userptr {
        enum vm_type            vm_type; /* must be first */
        struct list_head        job_node;
        struct page             **pages;
        unsigned int            npages;
        struct sg_table         *sgt;
        enum dma_data_direction dir;
        struct list_head        debugfs_list;
        pid_t                   pid;
        u64                     addr;
        u64                     size;
        u8                      dma_mapped;
};

/**
 * struct hl_cs - command submission.
 * @jobs_in_queue_cnt: per each queue, maintain counter of submitted jobs.
 * @ctx: the context this CS belongs to.
 * @job_list: list of the CS's jobs in the various queues.
 * @job_lock: spinlock for the CS's jobs list. Needed for free_job.
 * @refcount: reference counter for usage of the CS.
 * @fence: pointer to the fence object of this CS.
 * @signal_fence: pointer to the fence object of the signal CS (used by wait
 *                CS only).
 * @finish_work: workqueue object to run when CS is completed by H/W.
 * @work_tdr: delayed work node for TDR.
 * @mirror_node : node in device mirror list of command submissions.
 * @staged_cs_node: node in the staged cs list.
 * @debugfs_list: node in debugfs list of command submissions.
 * @encaps_sig_hdl: holds the encaps signals handle.
 * @sequence: the sequence number of this CS.
 * @staged_sequence: the sequence of the staged submission this CS is part of,
 *                   relevant only if staged_cs is set.
 * @timeout_jiffies: cs timeout in jiffies.
 * @submission_time_jiffies: submission time of the cs
 * @type: CS_TYPE_*.
 * @encaps_sig_hdl_id: encaps signals handle id, set for the first staged cs.
 * @sob_addr_offset: sob offset from the configuration base address.
 * @initial_sob_count: count of completed signals in SOB before current submission of signal or
 *                     cs with encaps signals.
 * @submitted: true if CS was submitted to H/W.
 * @completed: true if CS was completed by device.
 * @timedout : true if CS was timedout.
 * @tdr_active: true if TDR was activated for this CS (to prevent
 *              double TDR activation).
 * @aborted: true if CS was aborted due to some device error.
 * @timestamp: true if a timestmap must be captured upon completion.
 * @staged_last: true if this is the last staged CS and needs completion.
 * @staged_first: true if this is the first staged CS and we need to receive
 *                timeout for this CS.
 * @staged_cs: true if this CS is part of a staged submission.
 * @skip_reset_on_timeout: true if we shall not reset the device in case
 *                         timeout occurs (debug scenario).
 * @encaps_signals: true if this CS has encaps reserved signals.
 */
struct hl_cs {
        u16                     *jobs_in_queue_cnt;
        struct hl_ctx           *ctx;
        struct list_head        job_list;
        spinlock_t              job_lock;
        struct kref             refcount;
        struct hl_fence         *fence;
        struct hl_fence         *signal_fence;
        struct work_struct      finish_work;
        struct delayed_work     work_tdr;
        struct list_head        mirror_node;
        struct list_head        staged_cs_node;
        struct list_head        debugfs_list;
        struct hl_cs_encaps_sig_handle *encaps_sig_hdl;
        u64                     sequence;
        u64                     staged_sequence;
        u64                     timeout_jiffies;
        u64                     submission_time_jiffies;
        enum hl_cs_type         type;
        u32                     encaps_sig_hdl_id;
        u32                     sob_addr_offset;
        u16                     initial_sob_count;
        u8                      submitted;
        u8                      completed;
        u8                      timedout;
        u8                      tdr_active;
        u8                      aborted;
        u8                      timestamp;
        u8                      staged_last;
        u8                      staged_first;
        u8                      staged_cs;
        u8                      skip_reset_on_timeout;
        u8                      encaps_signals;
};

/**
 * struct hl_cs_job - command submission job.
 * @cs_node: the node to hang on the CS jobs list.
 * @cs: the CS this job belongs to.
 * @user_cb: the CB we got from the user.
 * @patched_cb: in case of patching, this is internal CB which is submitted on
 *              the queue instead of the CB we got from the IOCTL.
 * @finish_work: workqueue object to run when job is completed.
 * @userptr_list: linked-list of userptr mappings that belong to this job and
 *                      wait for completion.
 * @debugfs_list: node in debugfs list of command submission jobs.
 * @refcount: reference counter for usage of the CS job.
 * @queue_type: the type of the H/W queue this job is submitted to.
 * @id: the id of this job inside a CS.
 * @hw_queue_id: the id of the H/W queue this job is submitted to.
 * @user_cb_size: the actual size of the CB we got from the user.
 * @job_cb_size: the actual size of the CB that we put on the queue.
 * @encaps_sig_wait_offset: encapsulated signals offset, which allow user
 *                          to wait on part of the reserved signals.
 * @is_kernel_allocated_cb: true if the CB handle we got from the user holds a
 *                          handle to a kernel-allocated CB object, false
 *                          otherwise (SRAM/DRAM/host address).
 * @contains_dma_pkt: whether the JOB contains at least one DMA packet. This
 *                    info is needed later, when adding the 2xMSG_PROT at the
 *                    end of the JOB, to know which barriers to put in the
 *                    MSG_PROT packets. Relevant only for GAUDI as GOYA doesn't
 *                    have streams so the engine can't be busy by another
 *                    stream.
 */
struct hl_cs_job {
        struct list_head        cs_node;
        struct hl_cs            *cs;
        struct hl_cb            *user_cb;
        struct hl_cb            *patched_cb;
        struct work_struct      finish_work;
        struct list_head        userptr_list;
        struct list_head        debugfs_list;
        struct kref             refcount;
        enum hl_queue_type      queue_type;
        u32                     id;
        u32                     hw_queue_id;
        u32                     user_cb_size;
        u32                     job_cb_size;
        u32                     encaps_sig_wait_offset;
        u8                      is_kernel_allocated_cb;
        u8                      contains_dma_pkt;
};

/**
 * struct hl_cs_parser - command submission parser properties.
 * @user_cb: the CB we got from the user.
 * @patched_cb: in case of patching, this is internal CB which is submitted on
 *              the queue instead of the CB we got from the IOCTL.
 * @job_userptr_list: linked-list of userptr mappings that belong to the related
 *                      job and wait for completion.
 * @cs_sequence: the sequence number of the related CS.
 * @queue_type: the type of the H/W queue this job is submitted to.
 * @ctx_id: the ID of the context the related CS belongs to.
 * @hw_queue_id: the id of the H/W queue this job is submitted to.
 * @user_cb_size: the actual size of the CB we got from the user.
 * @patched_cb_size: the size of the CB after parsing.
 * @job_id: the id of the related job inside the related CS.
 * @is_kernel_allocated_cb: true if the CB handle we got from the user holds a
 *                          handle to a kernel-allocated CB object, false
 *                          otherwise (SRAM/DRAM/host address).
 * @contains_dma_pkt: whether the JOB contains at least one DMA packet. This
 *                    info is needed later, when adding the 2xMSG_PROT at the
 *                    end of the JOB, to know which barriers to put in the
 *                    MSG_PROT packets. Relevant only for GAUDI as GOYA doesn't
 *                    have streams so the engine can't be busy by another
 *                    stream.
 * @completion: true if we need completion for this CS.
 */
struct hl_cs_parser {
        struct hl_cb            *user_cb;
        struct hl_cb            *patched_cb;
        struct list_head        *job_userptr_list;
        u64                     cs_sequence;
        enum hl_queue_type      queue_type;
        u32                     ctx_id;
        u32                     hw_queue_id;
        u32                     user_cb_size;
        u32                     patched_cb_size;
        u8                      job_id;
        u8                      is_kernel_allocated_cb;
        u8                      contains_dma_pkt;
        u8                      completion;
};

/*
 * MEMORY STRUCTURE
 */

/**
 * struct hl_vm_hash_node - hash element from virtual address to virtual
 *                              memory area descriptor (hl_vm_phys_pg_list or
 *                              hl_userptr).
 * @node: node to hang on the hash table in context object.
 * @vaddr: key virtual address.
 * @ptr: value pointer (hl_vm_phys_pg_list or hl_userptr).
 */
struct hl_vm_hash_node {
        struct hlist_node       node;
        u64                     vaddr;
        void                    *ptr;
};

/**
 * struct hl_vm_hw_block_list_node - list element from user virtual address to
 *                              HW block id.
 * @node: node to hang on the list in context object.
 * @ctx: the context this node belongs to.
 * @vaddr: virtual address of the HW block.
 * @size: size of the block.
 * @id: HW block id (handle).
 */
struct hl_vm_hw_block_list_node {
        struct list_head        node;
        struct hl_ctx           *ctx;
        unsigned long           vaddr;
        u32                     size;
        u32                     id;
};

/**
 * struct hl_vm_phys_pg_pack - physical page pack.
 * @vm_type: describes the type of the virtual area descriptor.
 * @pages: the physical page array.
 * @npages: num physical pages in the pack.
 * @total_size: total size of all the pages in this list.
 * @mapping_cnt: number of shared mappings.
 * @exporting_cnt: number of dma-buf exporting.
 * @asid: the context related to this list.
 * @page_size: size of each page in the pack.
 * @flags: HL_MEM_* flags related to this list.
 * @handle: the provided handle related to this list.
 * @offset: offset from the first page.
 * @contiguous: is contiguous physical memory.
 * @created_from_userptr: is product of host virtual address.
 */
struct hl_vm_phys_pg_pack {
        enum vm_type            vm_type; /* must be first */
        u64                     *pages;
        u64                     npages;
        u64                     total_size;
        atomic_t                mapping_cnt;
        u32                     exporting_cnt;
        u32                     asid;
        u32                     page_size;
        u32                     flags;
        u32                     handle;
        u32                     offset;
        u8                      contiguous;
        u8                      created_from_userptr;
};

/**
 * struct hl_vm_va_block - virtual range block information.
 * @node: node to hang on the virtual range list in context object.
 * @start: virtual range start address.
 * @end: virtual range end address.
 * @size: virtual range size.
 */
struct hl_vm_va_block {
        struct list_head        node;
        u64                     start;
        u64                     end;
        u64                     size;
};

/**
 * struct hl_vm - virtual memory manager for MMU.
 * @dram_pg_pool: pool for DRAM physical pages of 2MB.
 * @dram_pg_pool_refcount: reference counter for the pool usage.
 * @idr_lock: protects the phys_pg_list_handles.
 * @phys_pg_pack_handles: idr to hold all device allocations handles.
 * @init_done: whether initialization was done. We need this because VM
 *              initialization might be skipped during device initialization.
 */
struct hl_vm {
        struct gen_pool         *dram_pg_pool;
        struct kref             dram_pg_pool_refcount;
        spinlock_t              idr_lock;
        struct idr              phys_pg_pack_handles;
        u8                      init_done;
};


/*
 * DEBUG, PROFILING STRUCTURE
 */

/**
 * struct hl_debug_params - Coresight debug parameters.
 * @input: pointer to component specific input parameters.
 * @output: pointer to component specific output parameters.
 * @output_size: size of output buffer.
 * @reg_idx: relevant register ID.
 * @op: component operation to execute.
 * @enable: true if to enable component debugging, false otherwise.
 */
struct hl_debug_params {
        void *input;
        void *output;
        u32 output_size;
        u32 reg_idx;
        u32 op;
        bool enable;
};

/*
 * FILE PRIVATE STRUCTURE
 */

/**
 * struct hl_fpriv - process information stored in FD private data.
 * @hdev: habanalabs device structure.
 * @filp: pointer to the given file structure.
 * @taskpid: current process ID.
 * @ctx: current executing context. TODO: remove for multiple ctx per process
 * @ctx_mgr: context manager to handle multiple context for this FD.
 * @cb_mgr: command buffer manager to handle multiple buffers for this FD.
 * @debugfs_list: list of relevant ASIC debugfs.
 * @dev_node: node in the device list of file private data
 * @refcount: number of related contexts.
 * @restore_phase_mutex: lock for context switch and restore phase.
 */
struct hl_fpriv {
        struct hl_device        *hdev;
        struct file             *filp;
        struct pid              *taskpid;
        struct hl_ctx           *ctx;
        struct hl_ctx_mgr       ctx_mgr;
        struct hl_cb_mgr        cb_mgr;
        struct list_head        debugfs_list;
        struct list_head        dev_node;
        struct kref             refcount;
        struct mutex            restore_phase_mutex;
};


/*
 * DebugFS
 */

/**
 * struct hl_info_list - debugfs file ops.
 * @name: file name.
 * @show: function to output information.
 * @write: function to write to the file.
 */
struct hl_info_list {
        const char      *name;
        int             (*show)(struct seq_file *s, void *data);
        ssize_t         (*write)(struct file *file, const char __user *buf,
                                size_t count, loff_t *f_pos);
};

/**
 * struct hl_debugfs_entry - debugfs dentry wrapper.
 * @info_ent: dentry realted ops.
 * @dev_entry: ASIC specific debugfs manager.
 */
struct hl_debugfs_entry {
        const struct hl_info_list       *info_ent;
        struct hl_dbg_device_entry      *dev_entry;
};

/**
 * struct hl_dbg_device_entry - ASIC specific debugfs manager.
 * @root: root dentry.
 * @hdev: habanalabs device structure.
 * @entry_arr: array of available hl_debugfs_entry.
 * @file_list: list of available debugfs files.
 * @file_mutex: protects file_list.
 * @cb_list: list of available CBs.
 * @cb_spinlock: protects cb_list.
 * @cs_list: list of available CSs.
 * @cs_spinlock: protects cs_list.
 * @cs_job_list: list of available CB jobs.
 * @cs_job_spinlock: protects cs_job_list.
 * @userptr_list: list of available userptrs (virtual memory chunk descriptor).
 * @userptr_spinlock: protects userptr_list.
 * @ctx_mem_hash_list: list of available contexts with MMU mappings.
 * @ctx_mem_hash_spinlock: protects cb_list.
 * @blob_desc: descriptor of blob
 * @state_dump: data of the system states in case of a bad cs.
 * @state_dump_sem: protects state_dump.
 * @addr: next address to read/write from/to in read/write32.
 * @mmu_addr: next virtual address to translate to physical address in mmu_show.
 * @userptr_lookup: the target user ptr to look up for on demand.
 * @mmu_asid: ASID to use while translating in mmu_show.
 * @state_dump_head: index of the latest state dump
 * @i2c_bus: generic u8 debugfs file for bus value to use in i2c_data_read.
 * @i2c_addr: generic u8 debugfs file for address value to use in i2c_data_read.
 * @i2c_reg: generic u8 debugfs file for register value to use in i2c_data_read.
 * @i2c_len: generic u8 debugfs file for length value to use in i2c_data_read.
 */
struct hl_dbg_device_entry {
        struct dentry                   *root;
        struct hl_device                *hdev;
        struct hl_debugfs_entry         *entry_arr;
        struct list_head                file_list;
        struct mutex                    file_mutex;
        struct list_head                cb_list;
        spinlock_t                      cb_spinlock;
        struct list_head                cs_list;
        spinlock_t                      cs_spinlock;
        struct list_head                cs_job_list;
        spinlock_t                      cs_job_spinlock;
        struct list_head                userptr_list;
        spinlock_t                      userptr_spinlock;
        struct list_head                ctx_mem_hash_list;
        spinlock_t                      ctx_mem_hash_spinlock;
        struct debugfs_blob_wrapper     blob_desc;
        char                            *state_dump[HL_STATE_DUMP_HIST_LEN];
        struct rw_semaphore             state_dump_sem;
        u64                             addr;
        u64                             mmu_addr;
        u64                             userptr_lookup;
        u32                             mmu_asid;
        u32                             state_dump_head;
        u8                              i2c_bus;
        u8                              i2c_addr;
        u8                              i2c_reg;
        u8                              i2c_len;
};

/**
 * struct hl_hw_obj_name_entry - single hw object name, member of
 * hl_state_dump_specs
 * @node: link to the containing hash table
 * @name: hw object name
 * @id: object identifier
 */
struct hl_hw_obj_name_entry {
        struct hlist_node       node;
        const char              *name;
        u32                     id;
};

enum hl_state_dump_specs_props {
        SP_SYNC_OBJ_BASE_ADDR,
        SP_NEXT_SYNC_OBJ_ADDR,
        SP_SYNC_OBJ_AMOUNT,
        SP_MON_OBJ_WR_ADDR_LOW,
        SP_MON_OBJ_WR_ADDR_HIGH,
        SP_MON_OBJ_WR_DATA,
        SP_MON_OBJ_ARM_DATA,
        SP_MON_OBJ_STATUS,
        SP_MONITORS_AMOUNT,
        SP_TPC0_CMDQ,
        SP_TPC0_CFG_SO,
        SP_NEXT_TPC,
        SP_MME_CMDQ,
        SP_MME_CFG_SO,
        SP_NEXT_MME,
        SP_DMA_CMDQ,
        SP_DMA_CFG_SO,
        SP_DMA_QUEUES_OFFSET,
        SP_NUM_OF_MME_ENGINES,
        SP_SUB_MME_ENG_NUM,
        SP_NUM_OF_DMA_ENGINES,
        SP_NUM_OF_TPC_ENGINES,
        SP_ENGINE_NUM_OF_QUEUES,
        SP_ENGINE_NUM_OF_STREAMS,
        SP_ENGINE_NUM_OF_FENCES,
        SP_FENCE0_CNT_OFFSET,
        SP_FENCE0_RDATA_OFFSET,
        SP_CP_STS_OFFSET,
        SP_NUM_CORES,

        SP_MAX
};

enum hl_sync_engine_type {
        ENGINE_TPC,
        ENGINE_DMA,
        ENGINE_MME,
};

/**
 * struct hl_mon_state_dump - represents a state dump of a single monitor
 * @id: monitor id
 * @wr_addr_low: address monitor will write to, low bits
 * @wr_addr_high: address monitor will write to, high bits
 * @wr_data: data monitor will write
 * @arm_data: register value containing monitor configuration
 * @status: monitor status
 */
struct hl_mon_state_dump {
        u32             id;
        u32             wr_addr_low;
        u32             wr_addr_high;
        u32             wr_data;
        u32             arm_data;
        u32             status;
};

/**
 * struct hl_sync_to_engine_map_entry - sync object id to engine mapping entry
 * @engine_type: type of the engine
 * @engine_id: id of the engine
 * @sync_id: id of the sync object
 */
struct hl_sync_to_engine_map_entry {
        struct hlist_node               node;
        enum hl_sync_engine_type        engine_type;
        u32                             engine_id;
        u32                             sync_id;
};

/**
 * struct hl_sync_to_engine_map - maps sync object id to associated engine id
 * @tb: hash table containing the mapping, each element is of type
 *      struct hl_sync_to_engine_map_entry
 */
struct hl_sync_to_engine_map {
        DECLARE_HASHTABLE(tb, SYNC_TO_ENGINE_HASH_TABLE_BITS);
};

/**
 * struct hl_state_dump_specs_funcs - virtual functions used by the state dump
 * @gen_sync_to_engine_map: generate a hash map from sync obj id to its engine
 * @print_single_monitor: format monitor data as string
 * @monitor_valid: return true if given monitor dump is valid
 * @print_fences_single_engine: format fences data as string
 */
struct hl_state_dump_specs_funcs {
        int (*gen_sync_to_engine_map)(struct hl_device *hdev,
                                struct hl_sync_to_engine_map *map);
        int (*print_single_monitor)(char **buf, size_t *size, size_t *offset,
                                    struct hl_device *hdev,
                                    struct hl_mon_state_dump *mon);
        int (*monitor_valid)(struct hl_mon_state_dump *mon);
        int (*print_fences_single_engine)(struct hl_device *hdev,
                                        u64 base_offset,
                                        u64 status_base_offset,
                                        enum hl_sync_engine_type engine_type,
                                        u32 engine_id, char **buf,
                                        size_t *size, size_t *offset);
};

/**
 * struct hl_state_dump_specs - defines ASIC known hw objects names
 * @so_id_to_str_tb: sync objects names index table
 * @monitor_id_to_str_tb: monitors names index table
 * @funcs: virtual functions used for state dump
 * @sync_namager_names: readable names for sync manager if available (ex: N_E)
 * @props: pointer to a per asic const props array required for state dump
 */
struct hl_state_dump_specs {
        DECLARE_HASHTABLE(so_id_to_str_tb, OBJ_NAMES_HASH_TABLE_BITS);
        DECLARE_HASHTABLE(monitor_id_to_str_tb, OBJ_NAMES_HASH_TABLE_BITS);
        struct hl_state_dump_specs_funcs        funcs;
        const char * const                      *sync_namager_names;
        s64                                     *props;
};


/*
 * DEVICES
 */

#define HL_STR_MAX      32

#define HL_DEV_STS_MAX (HL_DEVICE_STATUS_LAST + 1)

/* Theoretical limit only. A single host can only contain up to 4 or 8 PCIe
 * x16 cards. In extreme cases, there are hosts that can accommodate 16 cards.
 */
#define HL_MAX_MINORS   256

/*
 * Registers read & write functions.
 */

u32 hl_rreg(struct hl_device *hdev, u32 reg);
void hl_wreg(struct hl_device *hdev, u32 reg, u32 val);

#define RREG32(reg) hdev->asic_funcs->rreg(hdev, (reg))
#define WREG32(reg, v) hdev->asic_funcs->wreg(hdev, (reg), (v))
#define DREG32(reg) pr_info("REGISTER: " #reg " : 0x%08X\n",    \
                        hdev->asic_funcs->rreg(hdev, (reg)))

#define WREG32_P(reg, val, mask)                                \
        do {                                                    \
                u32 tmp_ = RREG32(reg);                         \
                tmp_ &= (mask);                                 \
                tmp_ |= ((val) & ~(mask));                      \
                WREG32(reg, tmp_);                              \
        } while (0)
#define WREG32_AND(reg, and) WREG32_P(reg, 0, and)
#define WREG32_OR(reg, or) WREG32_P(reg, or, ~(or))

#define RMWREG32(reg, val, mask)                                \
        do {                                                    \
                u32 tmp_ = RREG32(reg);                         \
                tmp_ &= ~(mask);                                \
                tmp_ |= ((val) << __ffs(mask));                 \
                WREG32(reg, tmp_);                              \
        } while (0)

#define RREG32_MASK(reg, mask) ((RREG32(reg) & mask) >> __ffs(mask))

#define REG_FIELD_SHIFT(reg, field) reg##_##field##_SHIFT
#define REG_FIELD_MASK(reg, field) reg##_##field##_MASK
#define WREG32_FIELD(reg, offset, field, val)   \
        WREG32(mm##reg + offset, (RREG32(mm##reg + offset) & \
                                ~REG_FIELD_MASK(reg, field)) | \
                                (val) << REG_FIELD_SHIFT(reg, field))

/* Timeout should be longer when working with simulator but cap the
 * increased timeout to some maximum
 */
#define hl_poll_timeout(hdev, addr, val, cond, sleep_us, timeout_us) \
({ \
        ktime_t __timeout; \
        if (hdev->pdev) \
                __timeout = ktime_add_us(ktime_get(), timeout_us); \
        else \
                __timeout = ktime_add_us(ktime_get(),\
                                min((u64)(timeout_us * 10), \
                                        (u64) HL_SIM_MAX_TIMEOUT_US)); \
        might_sleep_if(sleep_us); \
        for (;;) { \
                (val) = RREG32(addr); \
                if (cond) \
                        break; \
                if (timeout_us && ktime_compare(ktime_get(), __timeout) > 0) { \
                        (val) = RREG32(addr); \
                        break; \
                } \
                if (sleep_us) \
                        usleep_range((sleep_us >> 2) + 1, sleep_us); \
        } \
        (cond) ? 0 : -ETIMEDOUT; \
})

/*
 * address in this macro points always to a memory location in the
 * host's (server's) memory. That location is updated asynchronously
 * either by the direct access of the device or by another core.
 *
 * To work both in LE and BE architectures, we need to distinguish between the
 * two states (device or another core updates the memory location). Therefore,
 * if mem_written_by_device is true, the host memory being polled will be
 * updated directly by the device. If false, the host memory being polled will
 * be updated by host CPU. Required so host knows whether or not the memory
 * might need to be byte-swapped before returning value to caller.
 */
#define hl_poll_timeout_memory(hdev, addr, val, cond, sleep_us, timeout_us, \
                                mem_written_by_device) \
({ \
        ktime_t __timeout; \
        if (hdev->pdev) \
                __timeout = ktime_add_us(ktime_get(), timeout_us); \
        else \
                __timeout = ktime_add_us(ktime_get(),\
                                min((u64)(timeout_us * 10), \
                                        (u64) HL_SIM_MAX_TIMEOUT_US)); \
        might_sleep_if(sleep_us); \
        for (;;) { \
                /* Verify we read updates done by other cores or by device */ \
                mb(); \
                (val) = *((u32 *)(addr)); \
                if (mem_written_by_device) \
                        (val) = le32_to_cpu(*(__le32 *) &(val)); \
                if (cond) \
                        break; \
                if (timeout_us && ktime_compare(ktime_get(), __timeout) > 0) { \
                        (val) = *((u32 *)(addr)); \
                        if (mem_written_by_device) \
                                (val) = le32_to_cpu(*(__le32 *) &(val)); \
                        break; \
                } \
                if (sleep_us) \
                        usleep_range((sleep_us >> 2) + 1, sleep_us); \
        } \
        (cond) ? 0 : -ETIMEDOUT; \
})

#define hl_poll_timeout_device_memory(hdev, addr, val, cond, sleep_us, \
                                        timeout_us) \
({ \
        ktime_t __timeout; \
        if (hdev->pdev) \
                __timeout = ktime_add_us(ktime_get(), timeout_us); \
        else \
                __timeout = ktime_add_us(ktime_get(),\
                                min((u64)(timeout_us * 10), \
                                        (u64) HL_SIM_MAX_TIMEOUT_US)); \
        might_sleep_if(sleep_us); \
        for (;;) { \
                (val) = readl(addr); \
                if (cond) \
                        break; \
                if (timeout_us && ktime_compare(ktime_get(), __timeout) > 0) { \
                        (val) = readl(addr); \
                        break; \
                } \
                if (sleep_us) \
                        usleep_range((sleep_us >> 2) + 1, sleep_us); \
        } \
        (cond) ? 0 : -ETIMEDOUT; \
})

struct hwmon_chip_info;

/**
 * struct hl_device_reset_work - reset workqueue task wrapper.
 * @wq: work queue for device reset procedure.
 * @reset_work: reset work to be done.
 * @hdev: habanalabs device structure.
 * @flags: reset flags.
 */
struct hl_device_reset_work {
        struct workqueue_struct         *wq;
        struct delayed_work             reset_work;
        struct hl_device                *hdev;
        u32                             flags;
};

/**
 * struct hr_mmu_hop_addrs - used for holding per-device host-resident mmu hop
 * information.
 * @virt_addr: the virtual address of the hop.
 * @phys-addr: the physical address of the hop (used by the device-mmu).
 * @shadow_addr: The shadow of the hop used by the driver for walking the hops.
 */
struct hr_mmu_hop_addrs {
        u64 virt_addr;
        u64 phys_addr;
        u64 shadow_addr;
};

/**
 * struct hl_mmu_hr_pgt_priv - used for holding per-device mmu host-resident
 * page-table internal information.
 * @mmu_pgt_pool: pool of page tables used by MMU for allocating hops.
 * @mmu_shadow_hop0: shadow array of hop0 tables.
 */
struct hl_mmu_hr_priv {
        struct gen_pool *mmu_pgt_pool;
        struct hr_mmu_hop_addrs *mmu_shadow_hop0;
};

/**
 * struct hl_mmu_dr_pgt_priv - used for holding per-device mmu device-resident
 * page-table internal information.
 * @mmu_pgt_pool: pool of page tables used by MMU for allocating hops.
 * @mmu_shadow_hop0: shadow array of hop0 tables.
 */
struct hl_mmu_dr_priv {
        struct gen_pool *mmu_pgt_pool;
        void *mmu_shadow_hop0;
};

/**
 * struct hl_mmu_priv - used for holding per-device mmu internal information.
 * @dr: information on the device-resident MMU, when exists.
 * @hr: information on the host-resident MMU, when exists.
 */
struct hl_mmu_priv {
        struct hl_mmu_dr_priv dr;
        struct hl_mmu_hr_priv hr;
};

/**
 * struct hl_mmu_per_hop_info - A structure describing one TLB HOP and its entry
 *                that was created in order to translate a virtual address to a
 *                physical one.
 * @hop_addr: The address of the hop.
 * @hop_pte_addr: The address of the hop entry.
 * @hop_pte_val: The value in the hop entry.
 */
struct hl_mmu_per_hop_info {
        u64 hop_addr;
        u64 hop_pte_addr;
        u64 hop_pte_val;
};

/**
 * struct hl_mmu_hop_info - A structure describing the TLB hops and their
 * hop-entries that were created in order to translate a virtual address to a
 * physical one.
 * @scrambled_vaddr: The value of the virtual address after scrambling. This
 *                   address replaces the original virtual-address when mapped
 *                   in the MMU tables.
 * @unscrambled_paddr: The un-scrambled physical address.
 * @hop_info: Array holding the per-hop information used for the translation.
 * @used_hops: The number of hops used for the translation.
 * @range_type: virtual address range type.
 */
struct hl_mmu_hop_info {
        u64 scrambled_vaddr;
        u64 unscrambled_paddr;
        struct hl_mmu_per_hop_info hop_info[MMU_ARCH_5_HOPS];
        u32 used_hops;
        enum hl_va_range_type range_type;
};

/**
 * struct hl_mmu_funcs - Device related MMU functions.
 * @init: initialize the MMU module.
 * @fini: release the MMU module.
 * @ctx_init: Initialize a context for using the MMU module.
 * @ctx_fini: disable a ctx from using the mmu module.
 * @map: maps a virtual address to physical address for a context.
 * @unmap: unmap a virtual address of a context.
 * @flush: flush all writes from all cores to reach device MMU.
 * @swap_out: marks all mapping of the given context as swapped out.
 * @swap_in: marks all mapping of the given context as swapped in.
 * @get_tlb_info: returns the list of hops and hop-entries used that were
 *                created in order to translate the giver virtual address to a
 *                physical one.
 */
struct hl_mmu_funcs {
        int (*init)(struct hl_device *hdev);
        void (*fini)(struct hl_device *hdev);
        int (*ctx_init)(struct hl_ctx *ctx);
        void (*ctx_fini)(struct hl_ctx *ctx);
        int (*map)(struct hl_ctx *ctx,
                        u64 virt_addr, u64 phys_addr, u32 page_size,
                        bool is_dram_addr);
        int (*unmap)(struct hl_ctx *ctx,
                        u64 virt_addr, bool is_dram_addr);
        void (*flush)(struct hl_ctx *ctx);
        void (*swap_out)(struct hl_ctx *ctx);
        void (*swap_in)(struct hl_ctx *ctx);
        int (*get_tlb_info)(struct hl_ctx *ctx,
                        u64 virt_addr, struct hl_mmu_hop_info *hops);
};

/**
 * number of user contexts allowed to call wait_for_multi_cs ioctl in
 * parallel
 */
#define MULTI_CS_MAX_USER_CTX   2

/**
 * struct multi_cs_completion - multi CS wait completion.
 * @completion: completion of any of the CS in the list
 * @lock: spinlock for the completion structure
 * @timestamp: timestamp for the multi-CS completion
 * @stream_master_qid_map: bitmap of all stream masters on which the multi-CS
 *                        is waiting
 * @used: 1 if in use, otherwise 0
 */
struct multi_cs_completion {
        struct completion       completion;
        spinlock_t              lock;
        s64                     timestamp;
        u32                     stream_master_qid_map;
        u8                      used;
};

/**
 * struct multi_cs_data - internal data for multi CS call
 * @ctx: pointer to the context structure
 * @fence_arr: array of fences of all CSs
 * @seq_arr: array of CS sequence numbers
 * @timeout_jiffies: timeout in jiffies for waiting for CS to complete
 * @timestamp: timestamp of first completed CS
 * @wait_status: wait for CS status
 * @completion_bitmap: bitmap of completed CSs (1- completed, otherwise 0)
 * @arr_len: fence_arr and seq_arr array length
 * @gone_cs: indication of gone CS (1- there was gone CS, otherwise 0)
 * @update_ts: update timestamp. 1- update the timestamp, otherwise 0.
 */
struct multi_cs_data {
        struct hl_ctx   *ctx;
        struct hl_fence **fence_arr;
        u64             *seq_arr;
        s64             timeout_jiffies;
        s64             timestamp;
        long            wait_status;
        u32             completion_bitmap;
        u8              arr_len;
        u8              gone_cs;
        u8              update_ts;
};

/**
 * struct hl_clk_throttle_timestamp - current/last clock throttling timestamp
 * @start: timestamp taken when 'start' event is received in driver
 * @end: timestamp taken when 'end' event is received in driver
 */
struct hl_clk_throttle_timestamp {
        ktime_t         start;
        ktime_t         end;
};

/**
 * struct hl_clk_throttle - keeps current/last clock throttling timestamps
 * @timestamp: timestamp taken by driver and firmware, index 0 refers to POWER
 *             index 1 refers to THERMAL
 * @lock: protects this structure as it can be accessed from both event queue
 *        context and info_ioctl context
 * @current_reason: bitmask represents the current clk throttling reasons
 * @aggregated_reason: bitmask represents aggregated clk throttling reasons since driver load
 */
struct hl_clk_throttle {
        struct hl_clk_throttle_timestamp timestamp[HL_CLK_THROTTLE_TYPE_MAX];
        struct mutex    lock;
        u32             current_reason;
        u32             aggregated_reason;
};

/**
 * struct last_error_session_info - info about last session in which CS timeout or
 *                                    razwi error occurred.
 * @open_dev_timestamp: device open timestamp.
 * @cs_timeout_timestamp: CS timeout timestamp.
 * @razwi_timestamp: razwi timestamp.
 * @cs_write_disable: if set writing to CS parameters in the structure is disabled so the
 *                    first (root cause) CS timeout will not be overwritten.
 * @razwi_write_disable: if set writing to razwi parameters in the structure is disabled so the
 *                       first (root cause) razwi will not be overwritten.
 * @cs_timeout_seq: CS timeout sequence number.
 * @razwi_addr: address that caused razwi.
 * @razwi_engine_id_1: engine id of the razwi initiator, if it was initiated by engine that does
 *                     not have engine id it will be set to U16_MAX.
 * @razwi_engine_id_2: second engine id of razwi initiator. Might happen that razwi have 2 possible
 *                     engines which one them caused the razwi. In that case, it will contain the
 *                     second possible engine id, otherwise it will be set to U16_MAX.
 * @razwi_non_engine_initiator: in case the initiator of the razwi does not have engine id.
 * @razwi_type: cause of razwi, page fault or access error, otherwise it will be set to U8_MAX.
 */
struct last_error_session_info {
        ktime_t         open_dev_timestamp;
        ktime_t         cs_timeout_timestamp;
        ktime_t         razwi_timestamp;
        atomic_t        cs_write_disable;
        atomic_t        razwi_write_disable;
        u64             cs_timeout_seq;
        u64             razwi_addr;
        u16             razwi_engine_id_1;
        u16             razwi_engine_id_2;
        u8              razwi_non_engine_initiator;
        u8              razwi_type;
};

/**
 * struct hl_reset_info - holds current device reset information.
 * @lock: lock to protect critical reset flows.
 * @soft_reset_cnt: number of soft reset since the driver was loaded.
 * @hard_reset_cnt: number of hard reset since the driver was loaded.
 * @hard_reset_schedule_flags: hard reset is scheduled to after current soft reset,
 *                             here we hold the hard reset flags.
 * @in_reset: is device in reset flow.
 * @is_in_soft_reset: Device is currently in soft reset process.
 * @needs_reset: true if reset_on_lockup is false and device should be reset
 *               due to lockup.
 * @hard_reset_pending: is there a hard reset work pending.
 * @curr_reset_cause: saves an enumerated reset cause when a hard reset is
 *                    triggered, and cleared after it is shared with preboot.
 * @prev_reset_trigger: saves the previous trigger which caused a reset, overidden
 *                      with a new value on next reset
 * @reset_trigger_repeated: set if device reset is triggered more than once with
 *                          same cause.
 * @skip_reset_on_timeout: Skip device reset if CS has timed out, wait for it to
 *                         complete instead.
 */
struct hl_reset_info {
        spinlock_t      lock;
        u32             soft_reset_cnt;
        u32             hard_reset_cnt;
        u32             hard_reset_schedule_flags;
        u8              in_reset;
        u8              is_in_soft_reset;
        u8              needs_reset;
        u8              hard_reset_pending;

        u8              curr_reset_cause;
        u8              prev_reset_trigger;
        u8              reset_trigger_repeated;

        u8              skip_reset_on_timeout;
};

/**
 * struct hl_device - habanalabs device structure.
 * @pdev: pointer to PCI device, can be NULL in case of simulator device.
 * @pcie_bar_phys: array of available PCIe bars physical addresses.
 *                 (required only for PCI address match mode)
 * @pcie_bar: array of available PCIe bars virtual addresses.
 * @rmmio: configuration area address on SRAM.
 * @cdev: related char device.
 * @cdev_ctrl: char device for control operations only (INFO IOCTL)
 * @dev: related kernel basic device structure.
 * @dev_ctrl: related kernel device structure for the control device
 * @work_heartbeat: delayed work for CPU-CP is-alive check.
 * @device_reset_work: delayed work which performs hard reset
 * @asic_name: ASIC specific name.
 * @asic_type: ASIC specific type.
 * @completion_queue: array of hl_cq.
 * @user_interrupt: array of hl_user_interrupt. upon the corresponding user
 *                  interrupt, driver will monitor the list of fences
 *                  registered to this interrupt.
 * @common_user_interrupt: common user interrupt for all user interrupts.
 *                         upon any user interrupt, driver will monitor the
 *                         list of fences registered to this common structure.
 * @cq_wq: work queues of completion queues for executing work in process
 *         context.
 * @eq_wq: work queue of event queue for executing work in process context.
 * @sob_reset_wq: work queue for sob reset executions.
 * @kernel_ctx: Kernel driver context structure.
 * @kernel_queues: array of hl_hw_queue.
 * @cs_mirror_list: CS mirror list for TDR.
 * @cs_mirror_lock: protects cs_mirror_list.
 * @kernel_cb_mgr: command buffer manager for creating/destroying/handling CBs.
 * @event_queue: event queue for IRQ from CPU-CP.
 * @dma_pool: DMA pool for small allocations.
 * @cpu_accessible_dma_mem: Host <-> CPU-CP shared memory CPU address.
 * @cpu_accessible_dma_address: Host <-> CPU-CP shared memory DMA address.
 * @cpu_accessible_dma_pool: Host <-> CPU-CP shared memory pool.
 * @asid_bitmap: holds used/available ASIDs.
 * @asid_mutex: protects asid_bitmap.
 * @send_cpu_message_lock: enforces only one message in Host <-> CPU-CP queue.
 * @debug_lock: protects critical section of setting debug mode for device
 * @asic_prop: ASIC specific immutable properties.
 * @asic_funcs: ASIC specific functions.
 * @asic_specific: ASIC specific information to use only from ASIC files.
 * @vm: virtual memory manager for MMU.
 * @hwmon_dev: H/W monitor device.
 * @hl_chip_info: ASIC's sensors information.
 * @device_status_description: device status description.
 * @hl_debugfs: device's debugfs manager.
 * @cb_pool: list of preallocated CBs.
 * @cb_pool_lock: protects the CB pool.
 * @internal_cb_pool_virt_addr: internal command buffer pool virtual address.
 * @internal_cb_pool_dma_addr: internal command buffer pool dma address.
 * @internal_cb_pool: internal command buffer memory pool.
 * @internal_cb_va_base: internal cb pool mmu virtual address base
 * @fpriv_list: list of file private data structures. Each structure is created
 *              when a user opens the device
 * @fpriv_ctrl_list: list of file private data structures. Each structure is created
 *              when a user opens the control device
 * @fpriv_list_lock: protects the fpriv_list
 * @fpriv_ctrl_list_lock: protects the fpriv_ctrl_list
 * @aggregated_cs_counters: aggregated cs counters among all contexts
 * @mmu_priv: device-specific MMU data.
 * @mmu_func: device-related MMU functions.
 * @fw_loader: FW loader manager.
 * @pci_mem_region: array of memory regions in the PCI
 * @state_dump_specs: constants and dictionaries needed to dump system state.
 * @multi_cs_completion: array of multi-CS completion.
 * @clk_throttling: holds information about current/previous clock throttling events
 * @reset_info: holds current device reset information.
 * @last_error: holds information about last session in which CS timeout or razwi error occurred.
 * @stream_master_qid_arr: pointer to array with QIDs of master streams.
 * @dram_used_mem: current DRAM memory consumption.
 * @timeout_jiffies: device CS timeout value.
 * @max_power: the max power of the device, as configured by the sysadmin. This
 *             value is saved so in case of hard-reset, the driver will restore
 *             this value and update the F/W after the re-initialization
 * @clock_gating_mask: is clock gating enabled. bitmask that represents the
 *                     different engines. See debugfs-driver-habanalabs for
 *                     details.
 * @boot_error_status_mask: contains a mask of the device boot error status.
 *                          Each bit represents a different error, according to
 *                          the defines in hl_boot_if.h. If the bit is cleared,
 *                          the error will be ignored by the driver during
 *                          device initialization. Mainly used to debug and
 *                          workaround firmware bugs
 * @dram_pci_bar_start: start bus address of PCIe bar towards DRAM.
 * @last_successful_open_ktime: timestamp (ktime) of the last successful device open.
 * @last_successful_open_jif: timestamp (jiffies) of the last successful
 *                            device open.
 * @last_open_session_duration_jif: duration (jiffies) of the last device open
 *                                  session.
 * @open_counter: number of successful device open operations.
 * @fw_poll_interval_usec: FW status poll interval in usec.
 * @card_type: Various ASICs have several card types. This indicates the card
 *             type of the current device.
 * @major: habanalabs kernel driver major.
 * @high_pll: high PLL profile frequency.
 * @id: device minor.
 * @id_control: minor of the control device
 * @cpu_pci_msb_addr: 50-bit extension bits for the device CPU's 40-bit
 *                    addresses.
 * @disabled: is device disabled.
 * @late_init_done: is late init stage was done during initialization.
 * @hwmon_initialized: is H/W monitor sensors was initialized.
 * @heartbeat: is heartbeat sanity check towards CPU-CP enabled.
 * @reset_on_lockup: true if a reset should be done in case of stuck CS, false
 *                   otherwise.
 * @dram_default_page_mapping: is DRAM default page mapping enabled.
 * @memory_scrub: true to perform device memory scrub in various locations,
 *                such as context-switch, context close, page free, etc.
 * @pmmu_huge_range: is a different virtual addresses range used for PMMU with
 *                   huge pages.
 * @init_done: is the initialization of the device done.
 * @device_cpu_disabled: is the device CPU disabled (due to timeouts)
 * @dma_mask: the dma mask that was set for this device
 * @in_debug: whether the device is in a state where the profiling/tracing infrastructure
 *            can be used. This indication is needed because in some ASICs we need to do
 *            specific operations to enable that infrastructure.
 * @power9_64bit_dma_enable: true to enable 64-bit DMA mask support. Relevant
 *                           only to POWER9 machines.
 * @cdev_sysfs_created: were char devices and sysfs nodes created.
 * @stop_on_err: true if engines should stop on error.
 * @supports_sync_stream: is sync stream supported.
 * @sync_stream_queue_idx: helper index for sync stream queues initialization.
 * @collective_mon_idx: helper index for collective initialization
 * @supports_coresight: is CoreSight supported.
 * @supports_cb_mapping: is mapping a CB to the device's MMU supported.
 * @process_kill_trial_cnt: number of trials reset thread tried killing
 *                          user processes
 * @device_fini_pending: true if device_fini was called and might be
 *                       waiting for the reset thread to finish
 * @supports_staged_submission: true if staged submissions are supported
 * @device_cpu_is_halted: Flag to indicate whether the device CPU was already
 *                        halted. We can't halt it again because the COMMS
 *                        protocol will throw an error. Relevant only for
 *                        cases where Linux was not loaded to device CPU
 * @supports_wait_for_multi_cs: true if wait for multi CS is supported
 * @is_compute_ctx_active: Whether there is an active compute context executing.
 */
struct hl_device {
        struct pci_dev                  *pdev;
        u64                             pcie_bar_phys[HL_PCI_NUM_BARS];
        void __iomem                    *pcie_bar[HL_PCI_NUM_BARS];
        void __iomem                    *rmmio;
        struct cdev                     cdev;
        struct cdev                     cdev_ctrl;
        struct device                   *dev;
        struct device                   *dev_ctrl;
        struct delayed_work             work_heartbeat;
        struct hl_device_reset_work     device_reset_work;
        char                            asic_name[HL_STR_MAX];
        char                            status[HL_DEV_STS_MAX][HL_STR_MAX];
        enum hl_asic_type               asic_type;
        struct hl_cq                    *completion_queue;
        struct hl_user_interrupt        *user_interrupt;
        struct hl_user_interrupt        common_user_interrupt;
        struct workqueue_struct         **cq_wq;
        struct workqueue_struct         *eq_wq;
        struct workqueue_struct         *sob_reset_wq;
        struct hl_ctx                   *kernel_ctx;
        struct hl_hw_queue              *kernel_queues;
        struct list_head                cs_mirror_list;
        spinlock_t                      cs_mirror_lock;
        struct hl_cb_mgr                kernel_cb_mgr;
        struct hl_eq                    event_queue;
        struct dma_pool                 *dma_pool;
        void                            *cpu_accessible_dma_mem;
        dma_addr_t                      cpu_accessible_dma_address;
        struct gen_pool                 *cpu_accessible_dma_pool;
        unsigned long                   *asid_bitmap;
        struct mutex                    asid_mutex;
        struct mutex                    send_cpu_message_lock;
        struct mutex                    debug_lock;
        struct asic_fixed_properties    asic_prop;
        const struct hl_asic_funcs      *asic_funcs;
        void                            *asic_specific;
        struct hl_vm                    vm;
        struct device                   *hwmon_dev;
        struct hwmon_chip_info          *hl_chip_info;

        struct hl_dbg_device_entry      hl_debugfs;

        struct list_head                cb_pool;
        spinlock_t                      cb_pool_lock;

        void                            *internal_cb_pool_virt_addr;
        dma_addr_t                      internal_cb_pool_dma_addr;
        struct gen_pool                 *internal_cb_pool;
        u64                             internal_cb_va_base;

        struct list_head                fpriv_list;
        struct list_head                fpriv_ctrl_list;
        struct mutex                    fpriv_list_lock;
        struct mutex                    fpriv_ctrl_list_lock;

        struct hl_cs_counters_atomic    aggregated_cs_counters;

        struct hl_mmu_priv              mmu_priv;
        struct hl_mmu_funcs             mmu_func[MMU_NUM_PGT_LOCATIONS];

        struct fw_load_mgr              fw_loader;

        struct pci_mem_region           pci_mem_region[PCI_REGION_NUMBER];

        struct hl_state_dump_specs      state_dump_specs;

        struct multi_cs_completion      multi_cs_completion[
                                                        MULTI_CS_MAX_USER_CTX];
        struct hl_clk_throttle          clk_throttling;
        struct last_error_session_info  last_error;

        struct hl_reset_info            reset_info;

        u32                             *stream_master_qid_arr;
        atomic64_t                      dram_used_mem;
        u64                             timeout_jiffies;
        u64                             max_power;
        u64                             clock_gating_mask;
        u64                             boot_error_status_mask;
        u64                             dram_pci_bar_start;
        u64                             last_successful_open_jif;
        u64                             last_open_session_duration_jif;
        u64                             open_counter;
        u64                             fw_poll_interval_usec;
        ktime_t                         last_successful_open_ktime;
        enum cpucp_card_types           card_type;
        u32                             major;
        u32                             high_pll;
        u16                             id;
        u16                             id_control;
        u16                             cpu_pci_msb_addr;
        u8                              disabled;
        u8                              late_init_done;
        u8                              hwmon_initialized;
        u8                              heartbeat;
        u8                              reset_on_lockup;
        u8                              dram_default_page_mapping;
        u8                              memory_scrub;
        u8                              pmmu_huge_range;
        u8                              init_done;
        u8                              device_cpu_disabled;
        u8                              dma_mask;
        u8                              in_debug;
        u8                              power9_64bit_dma_enable;
        u8                              cdev_sysfs_created;
        u8                              stop_on_err;
        u8                              supports_sync_stream;
        u8                              sync_stream_queue_idx;
        u8                              collective_mon_idx;
        u8                              supports_coresight;
        u8                              supports_cb_mapping;
        u8                              process_kill_trial_cnt;
        u8                              device_fini_pending;
        u8                              supports_staged_submission;
        u8                              device_cpu_is_halted;
        u8                              supports_wait_for_multi_cs;
        u8                              stream_master_qid_arr_size;
        u8                              is_compute_ctx_active;

        /* Parameters for bring-up */
        u64                             nic_ports_mask;
        u64                             fw_components;
        u8                              mmu_enable;
        u8                              mmu_huge_page_opt;
        u8                              reset_pcilink;
        u8                              cpu_queues_enable;
        u8                              pldm;
        u8                              axi_drain;
        u8                              sram_scrambler_enable;
        u8                              dram_scrambler_enable;
        u8                              hard_reset_on_fw_events;
        u8                              bmc_enable;
        u8                              rl_enable;
        u8                              reset_on_preboot_fail;
        u8                              reset_upon_device_release;
        u8                              reset_if_device_not_idle;
};


/**
 * struct hl_cs_encaps_sig_handle - encapsulated signals handle structure
 * @refcount: refcount used to protect removing this id when several
 *            wait cs are used to wait of the reserved encaps signals.
 * @hdev: pointer to habanalabs device structure.
 * @hw_sob: pointer to  H/W SOB used in the reservation.
 * @ctx: pointer to the user's context data structure
 * @cs_seq: staged cs sequence which contains encapsulated signals
 * @id: idr handler id to be used to fetch the handler info
 * @q_idx: stream queue index
 * @pre_sob_val: current SOB value before reservation
 * @count: signals number
 */
struct hl_cs_encaps_sig_handle {
        struct kref refcount;
        struct hl_device *hdev;
        struct hl_hw_sob *hw_sob;
        struct hl_ctx *ctx;
        u64  cs_seq;
        u32  id;
        u32  q_idx;
        u32  pre_sob_val;
        u32  count;
};

/*
 * IOCTLs
 */

/**
 * typedef hl_ioctl_t - typedef for ioctl function in the driver
 * @hpriv: pointer to the FD's private data, which contains state of
 *              user process
 * @data: pointer to the input/output arguments structure of the IOCTL
 *
 * Return: 0 for success, negative value for error
 */
typedef int hl_ioctl_t(struct hl_fpriv *hpriv, void *data);

/**
 * struct hl_ioctl_desc - describes an IOCTL entry of the driver.
 * @cmd: the IOCTL code as created by the kernel macros.
 * @func: pointer to the driver's function that should be called for this IOCTL.
 */
struct hl_ioctl_desc {
        unsigned int cmd;
        hl_ioctl_t *func;
};


/*
 * Kernel module functions that can be accessed by entire module
 */

/**
 * hl_get_sg_info() - get number of pages and the DMA address from SG list.
 * @sg: the SG list.
 * @dma_addr: pointer to DMA address to return.
 *
 * Calculate the number of consecutive pages described by the SG list. Take the
 * offset of the address in the first page, add to it the length and round it up
 * to the number of needed pages.
 */
static inline u32 hl_get_sg_info(struct scatterlist *sg, dma_addr_t *dma_addr)
{
        *dma_addr = sg_dma_address(sg);

        return ((((*dma_addr) & (PAGE_SIZE - 1)) + sg_dma_len(sg)) +
                        (PAGE_SIZE - 1)) >> PAGE_SHIFT;
}

/**
 * hl_mem_area_inside_range() - Checks whether address+size are inside a range.
 * @address: The start address of the area we want to validate.
 * @size: The size in bytes of the area we want to validate.
 * @range_start_address: The start address of the valid range.
 * @range_end_address: The end address of the valid range.
 *
 * Return: true if the area is inside the valid range, false otherwise.
 */
static inline bool hl_mem_area_inside_range(u64 address, u64 size,
                                u64 range_start_address, u64 range_end_address)
{
        u64 end_address = address + size;

        if ((address >= range_start_address) &&
                        (end_address <= range_end_address) &&
                        (end_address > address))
                return true;

        return false;
}

/**
 * hl_mem_area_crosses_range() - Checks whether address+size crossing a range.
 * @address: The start address of the area we want to validate.
 * @size: The size in bytes of the area we want to validate.
 * @range_start_address: The start address of the valid range.
 * @range_end_address: The end address of the valid range.
 *
 * Return: true if the area overlaps part or all of the valid range,
 *              false otherwise.
 */
static inline bool hl_mem_area_crosses_range(u64 address, u32 size,
                                u64 range_start_address, u64 range_end_address)
{
        u64 end_address = address + size - 1;

        return ((address <= range_end_address) && (range_start_address <= end_address));
}

int hl_device_open(struct inode *inode, struct file *filp);
int hl_device_open_ctrl(struct inode *inode, struct file *filp);
bool hl_device_operational(struct hl_device *hdev,
                enum hl_device_status *status);
enum hl_device_status hl_device_status(struct hl_device *hdev);
int hl_device_set_debug_mode(struct hl_device *hdev, struct hl_ctx *ctx, bool enable);
int hl_hw_queues_create(struct hl_device *hdev);
void hl_hw_queues_destroy(struct hl_device *hdev);
int hl_hw_queue_send_cb_no_cmpl(struct hl_device *hdev, u32 hw_queue_id,
                u32 cb_size, u64 cb_ptr);
void hl_hw_queue_submit_bd(struct hl_device *hdev, struct hl_hw_queue *q,
                u32 ctl, u32 len, u64 ptr);
int hl_hw_queue_schedule_cs(struct hl_cs *cs);
u32 hl_hw_queue_add_ptr(u32 ptr, u16 val);
void hl_hw_queue_inc_ci_kernel(struct hl_device *hdev, u32 hw_queue_id);
void hl_hw_queue_update_ci(struct hl_cs *cs);
void hl_hw_queue_reset(struct hl_device *hdev, bool hard_reset);

#define hl_queue_inc_ptr(p)             hl_hw_queue_add_ptr(p, 1)
#define hl_pi_2_offset(pi)              ((pi) & (HL_QUEUE_LENGTH - 1))

int hl_cq_init(struct hl_device *hdev, struct hl_cq *q, u32 hw_queue_id);
void hl_cq_fini(struct hl_device *hdev, struct hl_cq *q);
int hl_eq_init(struct hl_device *hdev, struct hl_eq *q);
void hl_eq_fini(struct hl_device *hdev, struct hl_eq *q);
void hl_cq_reset(struct hl_device *hdev, struct hl_cq *q);
void hl_eq_reset(struct hl_device *hdev, struct hl_eq *q);
irqreturn_t hl_irq_handler_cq(int irq, void *arg);
irqreturn_t hl_irq_handler_eq(int irq, void *arg);
irqreturn_t hl_irq_handler_user_cq(int irq, void *arg);
irqreturn_t hl_irq_handler_default(int irq, void *arg);
u32 hl_cq_inc_ptr(u32 ptr);

int hl_asid_init(struct hl_device *hdev);
void hl_asid_fini(struct hl_device *hdev);
unsigned long hl_asid_alloc(struct hl_device *hdev);
void hl_asid_free(struct hl_device *hdev, unsigned long asid);

int hl_ctx_create(struct hl_device *hdev, struct hl_fpriv *hpriv);
void hl_ctx_free(struct hl_device *hdev, struct hl_ctx *ctx);
int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx);
void hl_ctx_do_release(struct kref *ref);
void hl_ctx_get(struct hl_device *hdev, struct hl_ctx *ctx);
int hl_ctx_put(struct hl_ctx *ctx);
struct hl_ctx *hl_get_compute_ctx(struct hl_device *hdev);
struct hl_fence *hl_ctx_get_fence(struct hl_ctx *ctx, u64 seq);
int hl_ctx_get_fences(struct hl_ctx *ctx, u64 *seq_arr,
                                struct hl_fence **fence, u32 arr_len);
void hl_ctx_mgr_init(struct hl_ctx_mgr *mgr);
void hl_ctx_mgr_fini(struct hl_device *hdev, struct hl_ctx_mgr *mgr);

int hl_device_init(struct hl_device *hdev, struct class *hclass);
void hl_device_fini(struct hl_device *hdev);
int hl_device_suspend(struct hl_device *hdev);
int hl_device_resume(struct hl_device *hdev);
int hl_device_reset(struct hl_device *hdev, u32 flags);
void hl_hpriv_get(struct hl_fpriv *hpriv);
int hl_hpriv_put(struct hl_fpriv *hpriv);
int hl_device_utilization(struct hl_device *hdev, u32 *utilization);

int hl_build_hwmon_channel_info(struct hl_device *hdev,
                struct cpucp_sensor *sensors_arr);

int hl_sysfs_init(struct hl_device *hdev);
void hl_sysfs_fini(struct hl_device *hdev);

int hl_hwmon_init(struct hl_device *hdev);
void hl_hwmon_fini(struct hl_device *hdev);

int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr,
                        struct hl_ctx *ctx, u32 cb_size, bool internal_cb,
                        bool map_cb, u64 *handle);
int hl_cb_destroy(struct hl_device *hdev, struct hl_cb_mgr *mgr, u64 cb_handle);
int hl_cb_mmap(struct hl_fpriv *hpriv, struct vm_area_struct *vma);
int hl_hw_block_mmap(struct hl_fpriv *hpriv, struct vm_area_struct *vma);
struct hl_cb *hl_cb_get(struct hl_device *hdev, struct hl_cb_mgr *mgr,
                        u32 handle);
void hl_cb_put(struct hl_cb *cb);
void hl_cb_mgr_init(struct hl_cb_mgr *mgr);
void hl_cb_mgr_fini(struct hl_device *hdev, struct hl_cb_mgr *mgr);
struct hl_cb *hl_cb_kernel_create(struct hl_device *hdev, u32 cb_size,
                                        bool internal_cb);
int hl_cb_pool_init(struct hl_device *hdev);
int hl_cb_pool_fini(struct hl_device *hdev);
int hl_cb_va_pool_init(struct hl_ctx *ctx);
void hl_cb_va_pool_fini(struct hl_ctx *ctx);

void hl_cs_rollback_all(struct hl_device *hdev);
struct hl_cs_job *hl_cs_allocate_job(struct hl_device *hdev,
                enum hl_queue_type queue_type, bool is_kernel_allocated_cb);
void hl_sob_reset_error(struct kref *ref);
int hl_gen_sob_mask(u16 sob_base, u8 sob_mask, u8 *mask);
void hl_fence_put(struct hl_fence *fence);
void hl_fences_put(struct hl_fence **fence, int len);
void hl_fence_get(struct hl_fence *fence);
void cs_get(struct hl_cs *cs);
bool cs_needs_completion(struct hl_cs *cs);
bool cs_needs_timeout(struct hl_cs *cs);
bool is_staged_cs_last_exists(struct hl_device *hdev, struct hl_cs *cs);
struct hl_cs *hl_staged_cs_find_first(struct hl_device *hdev, u64 cs_seq);
void hl_multi_cs_completion_init(struct hl_device *hdev);

void goya_set_asic_funcs(struct hl_device *hdev);
void gaudi_set_asic_funcs(struct hl_device *hdev);

int hl_vm_ctx_init(struct hl_ctx *ctx);
void hl_vm_ctx_fini(struct hl_ctx *ctx);

int hl_vm_init(struct hl_device *hdev);
void hl_vm_fini(struct hl_device *hdev);

void hl_hw_block_mem_init(struct hl_ctx *ctx);
void hl_hw_block_mem_fini(struct hl_ctx *ctx);

u64 hl_reserve_va_block(struct hl_device *hdev, struct hl_ctx *ctx,
                enum hl_va_range_type type, u32 size, u32 alignment);
int hl_unreserve_va_block(struct hl_device *hdev, struct hl_ctx *ctx,
                u64 start_addr, u64 size);
int hl_pin_host_memory(struct hl_device *hdev, u64 addr, u64 size,
                        struct hl_userptr *userptr);
void hl_unpin_host_memory(struct hl_device *hdev, struct hl_userptr *userptr);
void hl_userptr_delete_list(struct hl_device *hdev,
                                struct list_head *userptr_list);
bool hl_userptr_is_pinned(struct hl_device *hdev, u64 addr, u32 size,
                                struct list_head *userptr_list,
                                struct hl_userptr **userptr);

int hl_mmu_init(struct hl_device *hdev);
void hl_mmu_fini(struct hl_device *hdev);
int hl_mmu_ctx_init(struct hl_ctx *ctx);
void hl_mmu_ctx_fini(struct hl_ctx *ctx);
int hl_mmu_map_page(struct hl_ctx *ctx, u64 virt_addr, u64 phys_addr,
                u32 page_size, bool flush_pte);
int hl_mmu_unmap_page(struct hl_ctx *ctx, u64 virt_addr, u32 page_size,
                bool flush_pte);
int hl_mmu_map_contiguous(struct hl_ctx *ctx, u64 virt_addr,
                                        u64 phys_addr, u32 size);
int hl_mmu_unmap_contiguous(struct hl_ctx *ctx, u64 virt_addr, u32 size);
int hl_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard, u32 flags);
int hl_mmu_invalidate_cache_range(struct hl_device *hdev, bool is_hard,
                                        u32 flags, u32 asid, u64 va, u64 size);
void hl_mmu_swap_out(struct hl_ctx *ctx);
void hl_mmu_swap_in(struct hl_ctx *ctx);
int hl_mmu_if_set_funcs(struct hl_device *hdev);
void hl_mmu_v1_set_funcs(struct hl_device *hdev, struct hl_mmu_funcs *mmu);
int hl_mmu_va_to_pa(struct hl_ctx *ctx, u64 virt_addr, u64 *phys_addr);
int hl_mmu_get_tlb_info(struct hl_ctx *ctx, u64 virt_addr,
                        struct hl_mmu_hop_info *hops);
u64 hl_mmu_scramble_addr(struct hl_device *hdev, u64 addr);
u64 hl_mmu_descramble_addr(struct hl_device *hdev, u64 addr);
bool hl_is_dram_va(struct hl_device *hdev, u64 virt_addr);

int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
                                void __iomem *dst, u32 src_offset, u32 size);
int hl_fw_send_pci_access_msg(struct hl_device *hdev, u32 opcode);
int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
                                u16 len, u32 timeout, u64 *result);
int hl_fw_unmask_irq(struct hl_device *hdev, u16 event_type);
int hl_fw_unmask_irq_arr(struct hl_device *hdev, const u32 *irq_arr,
                size_t irq_arr_size);
int hl_fw_test_cpu_queue(struct hl_device *hdev);
void *hl_fw_cpu_accessible_dma_pool_alloc(struct hl_device *hdev, size_t size,
                                                dma_addr_t *dma_handle);
void hl_fw_cpu_accessible_dma_pool_free(struct hl_device *hdev, size_t size,
                                        void *vaddr);
int hl_fw_send_heartbeat(struct hl_device *hdev);
int hl_fw_cpucp_info_get(struct hl_device *hdev,
                                u32 sts_boot_dev_sts0_reg,
                                u32 sts_boot_dev_sts1_reg, u32 boot_err0_reg,
                                u32 boot_err1_reg);
int hl_fw_cpucp_handshake(struct hl_device *hdev,
                                u32 sts_boot_dev_sts0_reg,
                                u32 sts_boot_dev_sts1_reg, u32 boot_err0_reg,
                                u32 boot_err1_reg);
int hl_fw_get_eeprom_data(struct hl_device *hdev, void *data, size_t max_size);
int hl_fw_cpucp_pci_counters_get(struct hl_device *hdev,
                struct hl_info_pci_counters *counters);
int hl_fw_cpucp_total_energy_get(struct hl_device *hdev,
                        u64 *total_energy);
int get_used_pll_index(struct hl_device *hdev, u32 input_pll_index,
                                                enum pll_index *pll_index);
int hl_fw_cpucp_pll_info_get(struct hl_device *hdev, u32 pll_index,
                u16 *pll_freq_arr);
int hl_fw_cpucp_power_get(struct hl_device *hdev, u64 *power);
void hl_fw_ask_hard_reset_without_linux(struct hl_device *hdev);
void hl_fw_ask_halt_machine_without_linux(struct hl_device *hdev);
int hl_fw_init_cpu(struct hl_device *hdev);
int hl_fw_read_preboot_status(struct hl_device *hdev, u32 cpu_boot_status_reg,
                                u32 sts_boot_dev_sts0_reg,
                                u32 sts_boot_dev_sts1_reg, u32 boot_err0_reg,
                                u32 boot_err1_reg, u32 timeout);
int hl_fw_dynamic_send_protocol_cmd(struct hl_device *hdev,
                                struct fw_load_mgr *fw_loader,
                                enum comms_cmd cmd, unsigned int size,
                                bool wait_ok, u32 timeout);
int hl_fw_dram_replaced_row_get(struct hl_device *hdev,
                                struct cpucp_hbm_row_info *info);
int hl_fw_dram_pending_row_get(struct hl_device *hdev, u32 *pend_rows_num);
int hl_fw_cpucp_engine_core_asid_set(struct hl_device *hdev, u32 asid);
int hl_pci_bars_map(struct hl_device *hdev, const char * const name[3],
                        bool is_wc[3]);
int hl_pci_elbi_read(struct hl_device *hdev, u64 addr, u32 *data);
int hl_pci_iatu_write(struct hl_device *hdev, u32 addr, u32 data);
int hl_pci_set_inbound_region(struct hl_device *hdev, u8 region,
                struct hl_inbound_pci_region *pci_region);
int hl_pci_set_outbound_region(struct hl_device *hdev,
                struct hl_outbound_pci_region *pci_region);
enum pci_region hl_get_pci_memory_region(struct hl_device *hdev, u64 addr);
int hl_pci_init(struct hl_device *hdev);
void hl_pci_fini(struct hl_device *hdev);

long hl_get_frequency(struct hl_device *hdev, u32 pll_index,
                                                                bool curr);
void hl_set_frequency(struct hl_device *hdev, u32 pll_index,
                                                                u64 freq);
int hl_get_temperature(struct hl_device *hdev,
                       int sensor_index, u32 attr, long *value);
int hl_set_temperature(struct hl_device *hdev,
                       int sensor_index, u32 attr, long value);
int hl_get_voltage(struct hl_device *hdev,
                   int sensor_index, u32 attr, long *value);
int hl_get_current(struct hl_device *hdev,
                   int sensor_index, u32 attr, long *value);
int hl_get_fan_speed(struct hl_device *hdev,
                     int sensor_index, u32 attr, long *value);
int hl_get_pwm_info(struct hl_device *hdev,
                    int sensor_index, u32 attr, long *value);
void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
                        long value);
u64 hl_get_max_power(struct hl_device *hdev);
void hl_set_max_power(struct hl_device *hdev);
int hl_set_voltage(struct hl_device *hdev,
                        int sensor_index, u32 attr, long value);
int hl_set_current(struct hl_device *hdev,
                        int sensor_index, u32 attr, long value);
int hl_set_power(struct hl_device *hdev,
                        int sensor_index, u32 attr, long value);
int hl_get_power(struct hl_device *hdev,
                        int sensor_index, u32 attr, long *value);
int hl_get_clk_rate(struct hl_device *hdev,
                        u32 *cur_clk, u32 *max_clk);
void hl_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq);
void hl_add_device_attr(struct hl_device *hdev,
                        struct attribute_group *dev_attr_grp);
void hw_sob_get(struct hl_hw_sob *hw_sob);
void hw_sob_put(struct hl_hw_sob *hw_sob);
void hl_encaps_handle_do_release(struct kref *ref);
void hl_hw_queue_encaps_sig_set_sob_info(struct hl_device *hdev,
                        struct hl_cs *cs, struct hl_cs_job *job,
                        struct hl_cs_compl *cs_cmpl);
void hl_release_pending_user_interrupts(struct hl_device *hdev);
int hl_cs_signal_sob_wraparound_handler(struct hl_device *hdev, u32 q_idx,
                        struct hl_hw_sob **hw_sob, u32 count, bool encaps_sig);

int hl_state_dump(struct hl_device *hdev);
const char *hl_state_dump_get_sync_name(struct hl_device *hdev, u32 sync_id);
const char *hl_state_dump_get_monitor_name(struct hl_device *hdev,
                                        struct hl_mon_state_dump *mon);
void hl_state_dump_free_sync_to_engine_map(struct hl_sync_to_engine_map *map);
__printf(4, 5) int hl_snprintf_resize(char **buf, size_t *size, size_t *offset,
                                        const char *format, ...);
char *hl_format_as_binary(char *buf, size_t buf_len, u32 n);
const char *hl_sync_engine_to_string(enum hl_sync_engine_type engine_type);

#ifdef CONFIG_DEBUG_FS

void hl_debugfs_init(void);
void hl_debugfs_fini(void);
void hl_debugfs_add_device(struct hl_device *hdev);
void hl_debugfs_remove_device(struct hl_device *hdev);
void hl_debugfs_add_file(struct hl_fpriv *hpriv);
void hl_debugfs_remove_file(struct hl_fpriv *hpriv);
void hl_debugfs_add_cb(struct hl_cb *cb);
void hl_debugfs_remove_cb(struct hl_cb *cb);
void hl_debugfs_add_cs(struct hl_cs *cs);
void hl_debugfs_remove_cs(struct hl_cs *cs);
void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job);
void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job);
void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr);
void hl_debugfs_remove_userptr(struct hl_device *hdev,
                                struct hl_userptr *userptr);
void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx);
void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx);
void hl_debugfs_set_state_dump(struct hl_device *hdev, char *data,
                                        unsigned long length);

#else

static inline void __init hl_debugfs_init(void)
{
}

static inline void hl_debugfs_fini(void)
{
}

static inline void hl_debugfs_add_device(struct hl_device *hdev)
{
}

static inline void hl_debugfs_remove_device(struct hl_device *hdev)
{
}

static inline void hl_debugfs_add_file(struct hl_fpriv *hpriv)
{
}

static inline void hl_debugfs_remove_file(struct hl_fpriv *hpriv)
{
}

static inline void hl_debugfs_add_cb(struct hl_cb *cb)
{
}

static inline void hl_debugfs_remove_cb(struct hl_cb *cb)
{
}

static inline void hl_debugfs_add_cs(struct hl_cs *cs)
{
}

static inline void hl_debugfs_remove_cs(struct hl_cs *cs)
{
}

static inline void hl_debugfs_add_job(struct hl_device *hdev,
                                        struct hl_cs_job *job)
{
}

static inline void hl_debugfs_remove_job(struct hl_device *hdev,
                                        struct hl_cs_job *job)
{
}

static inline void hl_debugfs_add_userptr(struct hl_device *hdev,
                                        struct hl_userptr *userptr)
{
}

static inline void hl_debugfs_remove_userptr(struct hl_device *hdev,
                                        struct hl_userptr *userptr)
{
}

static inline void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev,
                                        struct hl_ctx *ctx)
{
}

static inline void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev,
                                        struct hl_ctx *ctx)
{
}

static inline void hl_debugfs_set_state_dump(struct hl_device *hdev,
                                        char *data, unsigned long length)
{
}

#endif

/* IOCTLs */
long hl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
long hl_ioctl_control(struct file *filep, unsigned int cmd, unsigned long arg);
int hl_cb_ioctl(struct hl_fpriv *hpriv, void *data);
int hl_cs_ioctl(struct hl_fpriv *hpriv, void *data);
int hl_wait_ioctl(struct hl_fpriv *hpriv, void *data);
int hl_mem_ioctl(struct hl_fpriv *hpriv, void *data);

#endif /* HABANALABSP_H_ */