100 lines · c
1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * altera-jtag.h4 *5 * altera FPGA driver6 *7 * Copyright (C) Altera Corporation 1998-20018 * Copyright (C) 2010 NetUP Inc.9 * Copyright (C) 2010 Igor M. Liplianin <liplianin@netup.ru>10 */11 12#ifndef ALTERA_JTAG_H13#define ALTERA_JTAG_H14 15/* Function Prototypes */16enum altera_jtag_state {17 ILLEGAL_JTAG_STATE = -1,18 RESET = 0,19 IDLE = 1,20 DRSELECT = 2,21 DRCAPTURE = 3,22 DRSHIFT = 4,23 DREXIT1 = 5,24 DRPAUSE = 6,25 DREXIT2 = 7,26 DRUPDATE = 8,27 IRSELECT = 9,28 IRCAPTURE = 10,29 IRSHIFT = 11,30 IREXIT1 = 12,31 IRPAUSE = 13,32 IREXIT2 = 14,33 IRUPDATE = 1534 35};36 37struct altera_jtag {38 /* Global variable to store the current JTAG state */39 enum altera_jtag_state jtag_state;40 41 /* Store current stop-state for DR and IR scan commands */42 enum altera_jtag_state drstop_state;43 enum altera_jtag_state irstop_state;44 45 /* Store current padding values */46 u32 dr_pre;47 u32 dr_post;48 u32 ir_pre;49 u32 ir_post;50 u32 dr_length;51 u32 ir_length;52 u8 *dr_pre_data;53 u8 *dr_post_data;54 u8 *ir_pre_data;55 u8 *ir_post_data;56 u8 *dr_buffer;57 u8 *ir_buffer;58};59 60#define ALTERA_STACK_SIZE 12861#define ALTERA_MESSAGE_LENGTH 102462 63struct altera_state {64 struct altera_config *config;65 struct altera_jtag js;66 char msg_buff[ALTERA_MESSAGE_LENGTH + 1];67 long stack[ALTERA_STACK_SIZE];68};69 70int altera_jinit(struct altera_state *astate);71int altera_set_drstop(struct altera_jtag *js, enum altera_jtag_state state);72int altera_set_irstop(struct altera_jtag *js, enum altera_jtag_state state);73int altera_set_dr_pre(struct altera_jtag *js, u32 count, u32 start_index,74 u8 *preamble_data);75int altera_set_ir_pre(struct altera_jtag *js, u32 count, u32 start_index,76 u8 *preamble_data);77int altera_set_dr_post(struct altera_jtag *js, u32 count, u32 start_index,78 u8 *postamble_data);79int altera_set_ir_post(struct altera_jtag *js, u32 count, u32 start_index,80 u8 *postamble_data);81int altera_goto_jstate(struct altera_state *astate,82 enum altera_jtag_state state);83int altera_wait_cycles(struct altera_state *astate, s32 cycles,84 enum altera_jtag_state wait_state);85int altera_wait_msecs(struct altera_state *astate, s32 microseconds,86 enum altera_jtag_state wait_state);87int altera_irscan(struct altera_state *astate, u32 count,88 u8 *tdi_data, u32 start_index);89int altera_swap_ir(struct altera_state *astate,90 u32 count, u8 *in_data,91 u32 in_index, u8 *out_data,92 u32 out_index);93int altera_drscan(struct altera_state *astate, u32 count,94 u8 *tdi_data, u32 start_index);95int altera_swap_dr(struct altera_state *astate, u32 count,96 u8 *in_data, u32 in_index,97 u8 *out_data, u32 out_index);98void altera_free_buffers(struct altera_state *astate);99#endif /* ALTERA_JTAG_H */100