/*
<:copyright-BRCM:2016:DUAL/GPL:standard

   Broadcom Proprietary and Confidential.(c) 2016 Broadcom
   All Rights Reserved

Unless you and Broadcom execute a separate written software license
agreement governing use of this software, this software is licensed
to you under the terms of the GNU General Public License version 2
(the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
with the following added to such license:

   As a special exception, the copyright holders of this software give
   you permission to link this software with independent modules, and
   to copy and distribute the resulting executable under terms of your
   choice, provided that you also meet, for each linked independent
   module, the terms and conditions of the license of that module.
   An independent module is a module which is not derived from this
   software.  The special exception does not apply to any modifications
   of the software.

Not withstanding the above, under no circumstances may you combine
this software in any way with any other Broadcom software provided
under a license other than the GPL, without Broadcom's express prior
written consent.

:>
 */

#ifndef BCMTR_DEBUG_H_
#define BCMTR_DEBUG_H_

#include <bcm_config.h>
#include <bcmolt_msg_pack.h>
#include <bcmtr_header.h>
#include <bcmolt_msg.h>
#include <bcmcli.h>

/* CLD stands for capture,log,debug */

/** Capture, log, debug type */
typedef enum
{
    BCMTR_CLD_NONE      = 0,            /**< Off */
    BCMTR_CLD_CAPTURE   = 0x01,         /**< Message capture */
    BCMTR_CLD_LOG       = 0x02,         /**< Message logging */
    BCMTR_CLD_DUMP_HDR  = 0x04,         /**< Message header dump */
    BCMTR_CLD_DUMP      = 0x0C,         /**< Message header and body dump */
} bcmtr_cld_type;

/** Event type */
typedef enum
{
    BCMTR_CLD_EV_SEND,                  /**< Send message */
    BCMTR_CLD_EV_RESEND,                /**< Retransmit message */
    BCMTR_CLD_EV_RECV,                  /**< Receive message */
    BCMTR_CLD_EV_RECV_DISCARD,          /**< Receive message discarded */
    BCMTR_CLD_EV_TIMEOUT,               /**< Request timed out waiting for response */
} bcmtr_cld_event_type;

/** Capture, log, debug filter */
typedef struct
{
    bcmolt_mgt_group group;     /**< Message group. Can be BCMOLT_MGT_GROUP_ANY */
    bcmolt_obj_id object;       /**< Object. Can be BCMOLT_OBJECT_ANY */
    uint16_t subgroup;          /**< Message subgroup. Can be BCMOLT_SUBGROUP_ANY */
} bcmtr_cld_filter;

/** Initialize transport capture,log, debug service
 * \param[in]   parent  Parent CLI directory. Can be NULL
 * \returns BCM_ERR_OK or error code
 */
bcmos_errno bcmtr_cld_init(bcmcli_session *session);

/** Clean up transport capture, log, debug service
 */
void bcmtr_cld_exit(void);

/** Set capture, log, debug for selected messages
 * \param[in]   device          Device id
 * \param[in]   filter          Message filter
 * \param[in]   cld_level       Capture, log, debug level. Can be a combination of BCMTR_CLD_.. constants
 * \returns BCM_ERR_OK or error code
 */
bcmos_errno bcmtr_cld_level_set(bcmolt_devid device, const bcmtr_cld_filter *filter, bcmtr_cld_type cld_level);

/** Get capture, log, debug for selected message
 * \param[in]   device          Device id
 * \param[in]   filter          Message filter. Wildcards are not allowed.
 * \param[out]  cld_level       Capture, log, debug level
 * \returns BCM_ERR_OK or error code
 */
bcmos_errno bcmtr_cld_level_get(bcmolt_devid device, const bcmtr_cld_filter *filter, bcmtr_cld_type *cld_level);

/*
 * Message capture functions
 */

/**
 * Message capture facility allows capturing messages between the host
 * and OLT at real time. The recorded trace can be dumped in
 * human readable format or "played back" in order to reproduce
 * the configuration under test.
 * @{
 */

/** Minimal trace buffer size (bytes) */
#define BCMTR_CAPTURE_MIN_BUF_SIZE          (16*1024)

/** Capture buffer configuration parameters */
typedef struct bcmtr_capture_parm
{
    uint32_t size;              /**< Capture buffer size. Must be at least \ref BCMTR_CAPTURE_MIN_BUF_SIZE bytes */
    void *ptr;                  /**< Optional capture buffer pointer. Allocated automatically if NULL */
    bcmos_bool stop_on_full;    /**< TRUE-stop recording when buffer is full. FALSE=circular buffer */
    bcmos_bool activate;        /**< Auto-activate capture immediately after init */
} bcmtr_capture_parm;

/** Capture info record */
typedef struct bcmtr_capture_info
{
    uint32_t size;              /**< Capture buffer size */
    uint32_t used;              /**< Used bytes */
    uint32_t wa;                /**< Number of times capture buffer wrapped around */
    uint32_t msgs;              /**< Number of complete messages stored in the capture buffer */
    uint32_t lost;              /**< Number of messages lost due to buffer overflow */
} bcmtr_capture_info;

/* Capture entry header
 *
 * Followed by msg_size bytes of message data
 */
typedef struct
{
    uint32_t msg_size;          /**< Message size (bytes); MUST be the first member */
    uint32_t event;             /**< bcmtr_cld_event_type event */
    uint32_t timestamp;         /**< Message timestamp (us) */
    /* Followed by message data padded to the nearest 4 bytes */
} bcmtr_capture_entry;

/** Initialize capture buffer
 *
 * This function must be called first.
 * \param[in]   olt     Olt index
 * \param[in]   cfg     Capture configuration parameters
 * \return 0=success or error code
 */
bcmos_errno bcmtr_capture_init(bcmolt_devid olt, const bcmtr_capture_parm *parm);

/** Destroy capture buffer
 *
 * Destroy buffer initialized by bcmtr_capture_Init().
 * \param[in]   olt     Olt index
 * Following this call all recording is lost.
 */
void bcmtr_capture_destroy(bcmolt_devid olt);

/** Get capture recording info
 *
 * \param[in]   olt     Olt index
 * \param[out]  info    Capture information
 * \return 0=success or error code
 */
bcmos_errno bcmtr_capture_info_get(bcmolt_devid olt, bcmtr_capture_info *info);

/** Get the number of readable bytes in the capture buffer
 *
 * \param[in]   olt             OLT index
 * \param[out]  size            Number of readable bytes
 */
bcmos_errno bcmtr_capture_size_get(bcmolt_devid olt, uint32_t *size);

/** Read portion of capture
 *
 * This function reads recorded data into a user buffer starting at the specified offset from the beginning of the
 * capture up to the specified length. Applications can use this function in order to save capture into file or dump it.
 *
 * \param[in]   olt             OLT index
 * \param[out]  buf             User buffer
 * \param[in]   offset          Buffer offset to start read (bytes)
 * \param[in/out]  length       in: Maximum number of bytes to read into the user buffer
 *                              out: Remaining unused bytes in user buffer
 * \return 0=success or error code
 */
bcmos_errno bcmtr_capture_read(bcmolt_devid olt, uint8_t *buf, uint32_t offset, uint32_t *length);

/** Advance buffer to next capture entry
 *
 * Helper function used to scan buffer read by bcmtr_capture_read()
 *
 * \param[in/out]   buf         Capture buffer
 * \param[out]      hdr         Capture entry header
 * \param[out]      msg         Pointer to packed message
 */
bcmos_bool bcmtr_capture_entry_get_next(bcmolt_buf *buf, bcmtr_capture_entry *hdr, uint8_t **msg);

/** Decode and dump capture recording
 *
 * This function interprets and dumps capture recording.
 *
 * \param[in]   session CLI session
 * \param[in]   olt     OLT index
 * \param[out]  nmsgs   Number of messages dumped
 * \return 0=success or error code
 */
bcmos_errno bcmtr_capture_dump(bcmcli_session *session, bcmolt_devid olt, uint32_t *nmsgs);

/** (Re)start / Suspend capture recording
 *
 * \param[in]   olt     OLT index
 * \param[in]   start   TRUE=start, FALSE=suspend
 * \return 0=success or error code
 */
bcmos_errno bcmtr_capture_start_stop(bcmolt_devid olt, bcmos_bool start);

/** Are we actively capturing?
 *
 * \param[in]   olt     OLT index
 * \return TRUE=actively capturing, FALSE=NOT capturing
 */
bcmos_bool bcmtr_capture_is_active(bcmolt_devid olt);

/** Convert entry to platform specific format
 *
 * \param[in/out]   buf     Capture buffer
 * \param[out]      entry   Capture entry header
 *
 * \return TRUE if success, FALSE otherwise
 */
bcmos_bool bcmtr_capture_entry_unpack(bcmolt_buf *buf, bcmtr_capture_entry *entry);

/*
 * Internal functions - called from transport level
 */

/* Per-OLT, per-command combined trace,log,debug level */
extern bcmtr_cld_type bcmtr_cld_active_level[BCMTR_MAX_OLTS][BCMOLT_GROUP_ID__NUM_OF];

/* Notify message.
 * Called by transport layer
 */
void bcmtr_cld_notify(bcmolt_devid device, const bcmtr_hdr *hdr,
    bcmtr_cld_event_type ev, uint32_t ts, const uint8_t *packed, uint32_t packed_length,
    bcmolt_msg *msg);

/* Check if CLD is enabled for the message and record if yes
 * Called by transport layer
 */
#define BCMTR_CLD_CHECK_NOTIFY(_device, _hdr, _ev, _ts, _packed, _packed_length, _msg) \
    do {\
        if (bcmtr_cld_active_level[_device][(_hdr)->msg_id]) \
        { \
            bcmtr_cld_notify(_device, _hdr, _ev, _ts, _packed, _packed_length, _msg); \
        } \
    } while (0)

#endif /* BCMTR_DEBUG_H_ */