/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright(c) 2021-2022 Intel Corporation
 *
 * Authors: Cezary Rojewski <cezary.rojewski@intel.com>
 *          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
 */

#ifndef __SOUND_SOC_INTEL_AVS_H
#define __SOUND_SOC_INTEL_AVS_H

#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/kfifo.h>
#include <sound/hda_codec.h>
#include <sound/hda_register.h>
#include <sound/soc-component.h>
#include "messages.h"
#include "registers.h"

struct avs_dev;
struct avs_tplg;
struct avs_tplg_library;
struct avs_ipc_msg;

#ifdef CONFIG_ACPI
#define AVS_S0IX_SUPPORTED \
        (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)
#else
#define AVS_S0IX_SUPPORTED false
#endif

/*
 * struct avs_dsp_ops - Platform-specific DSP operations
 *
 * @power: Power on or off DSP cores
 * @reset: Enter or exit reset state on DSP cores
 * @stall: Stall or run DSP cores
 * @irq_handler: Top half of IPC servicing
 * @irq_thread: Bottom half of IPC servicing
 * @int_control: Enable or disable IPC interrupts
 */
struct avs_dsp_ops {
        int (* const power)(struct avs_dev *, u32, bool);
        int (* const reset)(struct avs_dev *, u32, bool);
        int (* const stall)(struct avs_dev *, u32, bool);
        irqreturn_t (* const dsp_interrupt)(struct avs_dev *);
        void (* const int_control)(struct avs_dev *, bool);
        int (* const load_basefw)(struct avs_dev *, struct firmware *);
        int (* const load_lib)(struct avs_dev *, struct firmware *, u32);
        int (* const transfer_mods)(struct avs_dev *, bool, struct avs_module_entry *, u32);
        int (* const config_basefw)(struct avs_dev *);
        int (* const enable_logs)(struct avs_dev *, enum avs_log_enable, u32, u32, unsigned long,
                                  u32 *);
        int (* const log_buffer_offset)(struct avs_dev *, u32);
        int (* const log_buffer_status)(struct avs_dev *, union avs_notify_msg *);
        int (* const coredump)(struct avs_dev *, union avs_notify_msg *);
        bool (* const d0ix_toggle)(struct avs_dev *, struct avs_ipc_msg *, bool);
        int (* const set_d0ix)(struct avs_dev *, bool);
};

#define avs_dsp_op(adev, op, ...) \
        ((adev)->spec->dsp_ops->op(adev, ## __VA_ARGS__))

extern const struct avs_dsp_ops avs_skl_dsp_ops;
extern const struct avs_dsp_ops avs_apl_dsp_ops;
extern const struct avs_dsp_ops avs_cnl_dsp_ops;
extern const struct avs_dsp_ops avs_icl_dsp_ops;
extern const struct avs_dsp_ops avs_tgl_dsp_ops;
extern const struct avs_dsp_ops avs_ptl_dsp_ops;

#define AVS_PLATATTR_CLDMA              BIT_ULL(0)
#define AVS_PLATATTR_IMR                BIT_ULL(1)
#define AVS_PLATATTR_ACE                BIT_ULL(2)
#define AVS_PLATATTR_ALTHDA             BIT_ULL(3)

#define avs_platattr_test(adev, attr) \
        ((adev)->spec->attributes & AVS_PLATATTR_##attr)

struct avs_sram_spec {
        const u32 base_offset;
        const u32 window_size;
};

struct avs_hipc_spec {
        const u32 req_offset;
        const u32 req_ext_offset;
        const u32 req_busy_mask;
        const u32 ack_offset;
        const u32 ack_done_mask;
        const u32 rsp_offset;
        const u32 rsp_busy_mask;
        const u32 ctl_offset;
        const u32 sts_offset;
};

/* Platform specific descriptor */
struct avs_spec {
        const char *name;

        const struct avs_dsp_ops *const dsp_ops;
        struct avs_fw_version min_fw_version; /* anything below is rejected */

        const u32 core_init_mask;       /* used during DSP boot */
        const u64 attributes;           /* bitmask of AVS_PLATATTR_* */
        const struct avs_sram_spec *sram;
        const struct avs_hipc_spec *hipc;
};

struct avs_fw_entry {
        const char *name;
        const struct firmware *fw;

        struct list_head node;
};

/*
 * struct avs_dev - Intel HD-Audio driver data
 *
 * @dev: PCI device
 * @dsp_ba: DSP bar address
 * @spec: platform-specific descriptor
 * @fw_cfg: Firmware configuration, obtained through FW_CONFIG message
 * @hw_cfg: Hardware configuration, obtained through HW_CONFIG message
 * @mods_info: Available module-types, obtained through MODULES_INFO message
 * @mod_idas: Module instance ID pool, one per module-type
 * @modres_mutex: For synchronizing any @mods_info updates
 * @ppl_ida: Pipeline instance ID pool
 * @fw_list: List of libraries loaded, including base firmware
 */
struct avs_dev {
        struct hda_bus base;
        struct device *dev;

        void __iomem *dsp_ba;
        const struct avs_spec *spec;
        struct avs_ipc *ipc;

        struct avs_fw_cfg fw_cfg;
        struct avs_hw_cfg hw_cfg;
        struct avs_mods_info *mods_info;
        struct ida **mod_idas;
        struct mutex modres_mutex;
        void *modcfg_buf;               /* module configuration buffer */
        struct ida ppl_ida;
        struct list_head fw_list;
        int *core_refs;         /* reference count per core */
        char **lib_names;
        int num_lp_paths;
        atomic_t l1sen_counter; /* controls whether L1SEN should be disabled */

        struct completion fw_ready;
        struct work_struct probe_work;

        struct list_head comp_list;
        struct mutex comp_list_mutex;
        struct list_head path_list;
        spinlock_t path_list_lock;
        struct mutex path_mutex;

        spinlock_t trace_lock;  /* serialize debug window I/O between each LOG_BUFFER_STATUS */
#ifdef CONFIG_DEBUG_FS
        struct kfifo trace_fifo;
        wait_queue_head_t trace_waitq;
        u32 aging_timer_period;
        u32 fifo_full_timer_period;
        u32 logged_resources;   /* context dependent: core or library */
        struct dentry *debugfs_root;
        /* probes */
        struct hdac_ext_stream *extractor;
        unsigned int num_probe_streams;
#endif
};

/* from hda_bus to avs_dev */
#define hda_to_avs(hda) container_of(hda, struct avs_dev, base)
/* from hdac_bus to avs_dev */
#define hdac_to_avs(hdac) hda_to_avs(to_hda_bus(hdac))
/* from device to avs_dev */
#define to_avs_dev(dev) \
({ \
        struct hdac_bus *__bus = dev_get_drvdata(dev); \
        hdac_to_avs(__bus); \
})

int avs_dsp_core_power(struct avs_dev *adev, u32 core_mask, bool power);
int avs_dsp_core_reset(struct avs_dev *adev, u32 core_mask, bool reset);
int avs_dsp_core_stall(struct avs_dev *adev, u32 core_mask, bool stall);
int avs_dsp_core_enable(struct avs_dev *adev, u32 core_mask);
int avs_dsp_core_disable(struct avs_dev *adev, u32 core_mask);

/* Inter Process Communication */

struct avs_ipc_msg {
        union {
                u64 header;
                union avs_global_msg glb;
                union avs_reply_msg rsp;
        };
        void *data;
        size_t size;
};

/*
 * struct avs_ipc - DSP IPC context
 *
 * @dev: PCI device
 * @rx: Reply message cache
 * @default_timeout_ms: default message timeout in MS
 * @ready: whether firmware is ready and communication is open
 * @rx_completed: whether RX for previously sent TX has been received
 * @rx_lock: for serializing manipulation of rx_* fields
 * @msg_lock: for synchronizing request handling
 * @done_completion: DONE-part of IPC i.e. ROM and ACKs from FW
 * @busy_completion: BUSY-part of IPC i.e. receiving responses from FW
 */
struct avs_ipc {
        struct device *dev;

        struct avs_ipc_msg rx;
        u32 default_timeout_ms;
        bool ready;
        atomic_t recovering;

        bool rx_completed;
        spinlock_t rx_lock;
        struct mutex msg_mutex;
        struct completion done_completion;
        struct completion busy_completion;

        struct work_struct recovery_work;
        struct delayed_work d0ix_work;
        atomic_t d0ix_disable_depth;
        bool in_d0ix;
};

#define AVS_EIPC        EREMOTEIO
/*
 * IPC handlers may return positive value (firmware error code) what denotes
 * successful HOST <-> DSP communication yet failure to process specific request.
 *
 * Below macro converts returned value to linux kernel error code.
 * All IPC callers MUST use it as soon as firmware error code is consumed.
 */
#define AVS_IPC_RET(ret) \
        (((ret) <= 0) ? (ret) : -AVS_EIPC)

void avs_dsp_process_response(struct avs_dev *adev, u64 header);
int avs_dsp_send_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request,
                             struct avs_ipc_msg *reply, int timeout, const char *name);
int avs_dsp_send_msg(struct avs_dev *adev, struct avs_ipc_msg *request,
                     struct avs_ipc_msg *reply, const char *name);
/* Two variants below are for messages that control DSP power states. */
int avs_dsp_send_pm_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request,
                                struct avs_ipc_msg *reply, int timeout, bool wake_d0i0,
                                const char *name);
int avs_dsp_send_pm_msg(struct avs_dev *adev, struct avs_ipc_msg *request,
                        struct avs_ipc_msg *reply, bool wake_d0i0, const char *name);
int avs_dsp_send_rom_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request, int timeout,
                                 const char *name);
int avs_dsp_send_rom_msg(struct avs_dev *adev, struct avs_ipc_msg *request, const char *name);
void avs_dsp_interrupt_control(struct avs_dev *adev, bool enable);
int avs_ipc_init(struct avs_ipc *ipc, struct device *dev);
void avs_ipc_block(struct avs_ipc *ipc);

int avs_dsp_disable_d0ix(struct avs_dev *adev);
int avs_dsp_enable_d0ix(struct avs_dev *adev);

int avs_mtl_core_power(struct avs_dev *adev, u32 core_mask, bool power);
int avs_mtl_core_reset(struct avs_dev *adev, u32 core_mask, bool power);
int avs_mtl_core_stall(struct avs_dev *adev, u32 core_mask, bool stall);
int avs_lnl_core_stall(struct avs_dev *adev, u32 core_mask, bool stall);
void avs_mtl_interrupt_control(struct avs_dev *adev, bool enable);
void avs_skl_ipc_interrupt(struct avs_dev *adev);
irqreturn_t avs_cnl_dsp_interrupt(struct avs_dev *adev);
irqreturn_t avs_mtl_dsp_interrupt(struct avs_dev *adev);
int avs_apl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period,
                        u32 fifo_full_period, unsigned long resource_mask, u32 *priorities);
int avs_icl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period,
                        u32 fifo_full_period, unsigned long resource_mask, u32 *priorities);
int avs_skl_log_buffer_offset(struct avs_dev *adev, u32 core);
int avs_icl_log_buffer_offset(struct avs_dev *adev, u32 core);
int avs_apl_log_buffer_status(struct avs_dev *adev, union avs_notify_msg *msg);
int avs_apl_coredump(struct avs_dev *adev, union avs_notify_msg *msg);
bool avs_apl_d0ix_toggle(struct avs_dev *adev, struct avs_ipc_msg *tx, bool wake);
bool avs_icl_d0ix_toggle(struct avs_dev *adev, struct avs_ipc_msg *tx, bool wake);
int avs_apl_set_d0ix(struct avs_dev *adev, bool enable);
int avs_icl_set_d0ix(struct avs_dev *adev, bool enable);

/* Firmware resources management */

int avs_get_module_entry(struct avs_dev *adev, const guid_t *uuid, struct avs_module_entry *entry);
int avs_get_module_id_entry(struct avs_dev *adev, u32 module_id, struct avs_module_entry *entry);
int avs_get_module_id(struct avs_dev *adev, const guid_t *uuid);
bool avs_is_module_ida_empty(struct avs_dev *adev, u32 module_id);

int avs_module_info_init(struct avs_dev *adev, bool purge);
void avs_module_info_free(struct avs_dev *adev);
int avs_module_id_alloc(struct avs_dev *adev, u16 module_id);
void avs_module_id_free(struct avs_dev *adev, u16 module_id, u8 instance_id);
int avs_request_firmware(struct avs_dev *adev, const struct firmware **fw_p, const char *name);
void avs_release_last_firmware(struct avs_dev *adev);
void avs_release_firmwares(struct avs_dev *adev);

int avs_dsp_init_module(struct avs_dev *adev, u16 module_id, u8 ppl_instance_id,
                        u8 core_id, u8 domain, void *param, u32 param_size,
                        u8 *instance_id);
void avs_dsp_delete_module(struct avs_dev *adev, u16 module_id, u8 instance_id,
                           u8 ppl_instance_id, u8 core_id);
int avs_dsp_create_pipeline(struct avs_dev *adev, u16 req_size, u8 priority,
                            bool lp, u16 attributes, u8 *instance_id);
int avs_dsp_delete_pipeline(struct avs_dev *adev, u8 instance_id);

/* Firmware loading */

void avs_hda_clock_gating_enable(struct avs_dev *adev, bool enable);
void avs_hda_power_gating_enable(struct avs_dev *adev, bool enable);
void avs_hda_l1sen_enable(struct avs_dev *adev, bool enable);

int avs_dsp_load_libraries(struct avs_dev *adev, struct avs_tplg_library *libs, u32 num_libs);
int avs_dsp_boot_firmware(struct avs_dev *adev, bool purge);
int avs_dsp_first_boot_firmware(struct avs_dev *adev);

int avs_cldma_load_basefw(struct avs_dev *adev, struct firmware *fw);
int avs_cldma_load_library(struct avs_dev *adev, struct firmware *lib, u32 id);
int avs_cldma_transfer_modules(struct avs_dev *adev, bool load,
                               struct avs_module_entry *mods, u32 num_mods);
int avs_hda_load_basefw(struct avs_dev *adev, struct firmware *fw);
int avs_hda_load_library(struct avs_dev *adev, struct firmware *lib, u32 id);
int avs_hda_transfer_modules(struct avs_dev *adev, bool load,
                             struct avs_module_entry *mods, u32 num_mods);

int avs_icl_load_basefw(struct avs_dev *adev, struct firmware *fw);

/* Soc component members */

struct avs_soc_component {
        struct snd_soc_component base;
        struct avs_tplg *tplg;

        struct list_head node;
};

#define to_avs_soc_component(comp) \
        container_of(comp, struct avs_soc_component, base)

extern const struct snd_soc_dai_ops avs_dai_fe_ops;

int avs_register_dmic_component(struct avs_dev *adev, const char *name);
int avs_register_i2s_component(struct avs_dev *adev, const char *name, unsigned long port_mask,
                               unsigned long *tdms);
int avs_register_hda_component(struct avs_dev *adev, const char *name);
int avs_register_component(struct device *dev, const char *name,
                           struct snd_soc_component_driver *drv,
                           struct snd_soc_dai_driver *cpu_dais, int num_cpu_dais);

int avs_register_all_boards(struct avs_dev *adev);
void avs_unregister_all_boards(struct avs_dev *adev);

int avs_parse_sched_cfg(struct avs_dev *adev, const char *buf, size_t len);

/* Filesystems integration */

extern const struct attribute_group *avs_attr_groups[];

#endif /* __SOUND_SOC_INTEL_AVS_H */