kpb.h

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/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2019 Intel Corporation. All rights reserved.
 *
 * Author: Marcin Rajwa <marcin.rajwa@linux.intel.com>
 */
 
#ifndef __SOF_AUDIO_KPB_H__
#define __SOF_AUDIO_KPB_H__
 
#include <sof/trace/trace.h>
#include <user/trace.h>
#include <stdint.h>
 
#if defined(__XCC__)
 
#include <xtensa/config/core-isa.h>
#if XCHAL_HAVE_HIFI3 || XCHAL_HAVE_HIFI4
#define KPB_HIFI3
#endif
 
#endif
struct comp_buffer;
 
/* KPB internal defines */
 
#if CONFIG_TIGERLAKE
#define KPB_MAX_BUFF_TIME 3000 
#define HOST_WAKEUP_TIME 1000 /* aprox. time of host DMA wakup from suspend [ms] */
#else
#define KPB_MAX_BUFF_TIME 2100 
#define HOST_WAKEUP_TIME 0 /* aprox. time of host DMA wakup from suspend [ms] */
#endif
 
#define KPB_MAX_DRAINING_REQ (KPB_MAX_BUFF_TIME - HOST_WAKEUP_TIME)
#define KPB_MAX_SUPPORTED_CHANNELS 6 
#define KPB_SAMPLES_PER_MS (KPB_SAMPLNG_FREQUENCY / 1000)
#define KPB_SAMPLNG_FREQUENCY 16000 
#define KPB_SAMPLE_CONTAINER_SIZE(sw) ((sw == 16) ? 16 : 32)
#define KPB_MAX_BUFFER_SIZE(sw, channels_number) ((KPB_SAMPLNG_FREQUENCY / 1000) * \
    (KPB_SAMPLE_CONTAINER_SIZE(sw) / 8) * KPB_MAX_BUFF_TIME * \
     (channels_number))
#define KPB_MAX_NO_OF_CLIENTS 4
#define KPB_MAX_SINK_CNT (1 + KPB_MAX_NO_OF_CLIENTS)
#define KPB_NO_OF_HISTORY_BUFFERS 2 
#define KPB_ALLOCATION_STEP 0x100
#define KPB_NO_OF_MEM_POOLS 5
#define KPB_BYTES_TO_FRAMES(bytes, sample_width, channels_number) \
    ((bytes) / ((KPB_SAMPLE_CONTAINER_SIZE(sample_width) / 8) * \
     (channels_number)))

#define KPB_DRAIN_NUM_OF_PPL_PERIODS_AT_ONCE 2
#define HOST_BUFFER_MIN_SIZE(hb, channels_number) ((hb) * (channels_number))

#define KPB_BYTES_TO_S16_SAMPLES(s) ((s) >> 1)
#define KPB_BYTES_TO_S32_SAMPLES(s) ((s) >> 2)
 
/* Macro that returns mask with selected bits set */
#define KPB_COUNT_TO_BITMASK(cnt) (((0x1 << (cnt)) - 1))
#define KPB_IS_BIT_SET(value, idx) ((value) & (1 << (idx)))
#define KPB_REFERENCE_SUPPORT_CHANNELS 2
/* Maximum number of channels in the micsel mask is 4,
 * i.e. number of max supported channels - reference channels)
 */
#define KPB_MAX_MICSEL_CHANNELS 4
/* Used in FMT */
#define FAST_MODE_TASK_MAX_MODULES_COUNT 16
#define REALTIME_PIN_ID 0

enum kpb_state {
    KPB_STATE_DISABLED = 0,
    KPB_STATE_RESET_FINISHING,
    KPB_STATE_CREATED,
    KPB_STATE_PREPARING,
    KPB_STATE_RUN,
    KPB_STATE_BUFFERING,
    KPB_STATE_INIT_DRAINING,
    KPB_STATE_DRAINING,
    KPB_STATE_HOST_COPY,
    KPB_STATE_RESETTING,
};
 
enum kpb_event {
    KPB_EVENT_REGISTER_CLIENT = 0,
    KPB_EVENT_UPDATE_PARAMS,
    KPB_EVENT_BEGIN_DRAINING,
    KPB_EVENT_STOP_DRAINING,
    KPB_EVENT_UNREGISTER_CLIENT,
};
 
struct kpb_event_data {
    enum kpb_event event_id;
    struct kpb_client *client_data;
};
 
enum kpb_client_state {
    KPB_CLIENT_UNREGISTERED = 0,
    KPB_CLIENT_BUFFERING,
    KPB_CLIENT_DRAINNING,
    KPB_CLIENT_DRAINNING_OD, 
};
 
struct kpb_client {
    uint8_t id; 
    uint32_t drain_req; 
    enum kpb_client_state state; 
    void *r_ptr; 
    struct comp_buffer *sink; 
};
 
enum buffer_state {
    KPB_BUFFER_FREE = 0,
    KPB_BUFFER_FULL,
    KPB_BUFFER_OFF,
};
 
enum kpb_id {
    KPB_LP = 0,
    KPB_HP,
};
 
struct history_buffer {
    enum buffer_state state; 
    void *start_addr; 
    void *end_addr; 
    void *w_ptr; 
    void *r_ptr; 
    struct history_buffer *next; 
    struct history_buffer *prev; 
};
 
/* Draining task data */
struct draining_data {
    struct comp_buffer *sink;
    struct history_buffer *hb;
    size_t drain_req;
    size_t drained;
    uint8_t is_draining_active;
    size_t sample_width;
    size_t buffered_while_draining;
    uint64_t draining_time_start;
    size_t drain_interval;
    uint64_t period_copy_start;
    size_t pb_limit; 
    size_t period_bytes;
    uint64_t next_copy_time;
    struct comp_dev *dev;
    bool sync_mode_on;
    enum comp_copy_type copy_type;
    size_t task_iteration;
    uint64_t prev_adjustment_time;
    size_t prev_adjustment_drained;
};
 
struct history_data {
    size_t buffer_size; 
    size_t buffered; 
    size_t free; 
    struct history_buffer *c_hb; 
};
 
/* moved to ipc4/kpb.h */
/* enum ipc4_kpb_module_config_params */
 
/* Stores KPB mic selector config */
struct kpb_micselector_config {
    /* channel bit set to 1 implies channel selection */
    uint32_t mask;
};
 
struct kpb_task_params {
    /* If largeconfigset is set to KP_POS_IN_BUFFER then number of modules must
     * correspond to number of modules between kpb and copier attached to hostdma.
     * Once draining path is configured, cannot be reinitialized/changed.
     */
    uint32_t number_of_modules;
    struct {
        uint16_t module_id;
        uint16_t instance_id;
    } dev_ids[1];
};
 
/* fmt namespace: */
#define FAST_MODE_TASK_MAX_LIST_COUNT 5
 
struct fast_mode_task {
    struct device_list *device_list[FAST_MODE_TASK_MAX_LIST_COUNT];
};
 
/* The +1 is here because we also push the kbp device
 * handle in addition to the max number of modules
 */
#define DEVICE_LIST_SIZE (FAST_MODE_TASK_MAX_MODULES_COUNT + 1)
 
/* Devicelist type
 * In Reference FW KPB used Bi-dir lists to store modules for FMT. It is possible that lists are
 * not necessary, but in case it might be wrong, here we use an array
 * with a list interface to switch it to a list easily.
 */
struct device_list {
    struct comp_dev **devs[DEVICE_LIST_SIZE];
    /* number of items AND index of next empty box */
    size_t count;
};
 
/*
 *
 *
 *  KPB FMT config set steps:
 *  1. Get dev_ids of module instances from IPC
 *  2. Alloc this kpb module instance on kpb_list_item, save address of where it was allocated
 *  3. Push the address on dev_list.device_list
 *  2. For each dev_id get device handler(module instance)
 *  3. Alloc device handler in modules_list_item, save address of where it was allocated
 *  4. Register this address in fmt.device_list
 *
 *  Pointer structure:
 *
 *      COMP_DEVS
 *        ^
 *        |
 *      dev_list.modules_list_item(comp_dev* )
 *        ^
 *        |
 *      dev_list.device_list(comp_dev**)
 *        ^
 *        |
 *      fmt.device_list(device_list*)
 *
 *
 */
 
/* KpbFastModeTaskModulesList Namespace */
struct kpb_fmt_dev_list {
    struct device_list device_list[FAST_MODE_TASK_MAX_LIST_COUNT];
    /* One for each sinkpin. */
    struct comp_dev *kpb_list_item[KPB_MAX_SINK_CNT];
    struct comp_dev *modules_list_item[FAST_MODE_TASK_MAX_MODULES_COUNT];
    struct comp_dev *kpb_mi_ptr;
};
 
#ifdef UNIT_TEST
void sys_comp_kpb_init(void);
#endif
 
#endif /* __SOF_AUDIO_KPB_H__ */