embeddedsw/lib/sw_services/xilskey/src/xilskey_jslib.h

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*
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* of this software and associated documentation files (the "Software"), to deal
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/*
 * JTAG server implementation library interface
 *
 * This library interface is intended to be use by JTAG server
 * implementations only, i.e. not used by JTAG server clients.
 */

#include "xilskey_js.h"

#ifdef __cplusplus
extern "C" {
#endif


typedef struct js_lib_server_struct js_lib_server_t;
typedef struct js_lib_port_struct js_lib_port_t;
typedef struct js_lib_command_sequence_struct js_lib_command_sequence_t;
typedef struct js_lib_command_struct js_lib_command_t;
typedef struct js_lib_command_buffer_struct js_lib_command_buffer_t;
typedef struct js_lib_state_info_struct js_lib_state_info_t;



/*
 * JTAG server object
 *
 * Server instances are created by implementation specific create
 * functions, typically named js_create_<implementation-name>.
 *
 * TODO: Add a way to schedule a command sequence to be repeated at
 * regular intervals.  This is useful to poll for events, like
 * breakpoint hit.
 */
struct js_server_struct {
    char dummy;
};


/*
 * JTAG server library object
 */
struct js_lib_server_struct {
    /* Public part of object */
    js_server_t base;

    /* See js_get_port_descr_list() */
    int (*get_port_descr_list)(
        js_lib_server_t *server,
        js_port_descr_t **port_listp);

    /* See js_open_port() */
    int (*open_port)(
        js_lib_server_t *server,
        js_port_descr_t *port_descr,
        js_lib_port_t **port);

    /* See js_deinit_server() */
    void (*deinit_server)(
        js_lib_server_t *server);

    /* Error of last command */
    char last_error[100];
};

struct js_lib_port_struct {
    /* Base class - must be first. */
    js_port_t base;

    /* See js_get_property() */
    int (*get_property)(
        js_lib_port_t *port,
        js_property_kind_t kind,
        js_property_value_t *valuep);

    /* See js_set_property() */
    int (*set_property)(
        js_lib_port_t *port,
        js_property_kind_t kind,
        js_property_value_t value);

    /* See js_run_command_sequence() */
    int (*run_command_sequence)(
        js_lib_command_sequence_t *commands);

    /* See js_close_port() */
    int (*close_port)(
        js_lib_port_t *port);
};


struct js_lib_command_buffer_struct {
    js_lib_command_buffer_t *next;

    /* First available byte in buffer */
    unsigned char *buf_free;

    /* End of buffer */
    unsigned char *buf_end;

    /* Start of buffer (must be last) */
    unsigned char buf_start[1];
};


/*
 * JTAG command sequence library object
 */
struct js_lib_command_sequence_struct {
    /* Client visible part */
    js_command_sequence_t base;

    /* Array of commands */
    js_lib_command_t *cmd_list;

    /* Count of added commands */
    unsigned int cmd_count;

    /* Command list capacity */
    unsigned int cmd_max;

    /* Size of command objects  */
    unsigned int cmd_size;

    /* Command buffer pool */
    js_lib_command_buffer_t *buf_head;
};


/*
 * JTAG command object
 *
 * Command object are added to JTAG command sequence object using
 * js_add_* functions.
 *
 * TODO: Add commands to get/set GPIO pins, conditional execution and
 * loops.
 */
typedef enum {
    JS_CMD_SET_STATE,
    JS_CMD_SHIFT
} js_command_kind_t;

struct js_lib_command_struct {
    /* Command to execute */
    js_command_kind_t kind;

    /* Flags for command */
    unsigned int flags;

    /* State after command */
    js_state_t state;

    /* Command specific count */
    size_t count;

    /* TDI buffer pointer */
    unsigned char *tdi_buf;

    /* TDO buffer pointer */
    unsigned char *tdo_buf;
};


struct js_lib_state_info_struct {
    /* Name of state */
    const char *name;

    /* TMS bits to move to other state */
    unsigned char state_tms[JS_STATE_MAX];

    /* Clocks to move to other state */
    unsigned char state_clk[JS_STATE_MAX];

    /* Nearest stable state */
    js_state_t stable_state;
};


extern js_lib_state_info_t js_lib_state_info[JS_STATE_MAX];

extern int js_lib_normalize_command_sequence(
    js_lib_command_sequence_t *dest,
    js_lib_command_sequence_t *src);

#ifdef __cplusplus
}
#endif