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- /*
- * altera-jtag.h
- *
- * altera FPGA driver
- *
- * Copyright (C) Altera Corporation 1998-2001
- * Copyright (C) 2010 NetUP Inc.
- * Copyright (C) 2010 Igor M. Liplianin <liplianin@netup.ru>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- *
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef ALTERA_JTAG_H
- #define ALTERA_JTAG_H
- /* Function Prototypes */
- enum altera_jtag_state {
- ILLEGAL_JTAG_STATE = -1,
- RESET = 0,
- IDLE = 1,
- DRSELECT = 2,
- DRCAPTURE = 3,
- DRSHIFT = 4,
- DREXIT1 = 5,
- DRPAUSE = 6,
- DREXIT2 = 7,
- DRUPDATE = 8,
- IRSELECT = 9,
- IRCAPTURE = 10,
- IRSHIFT = 11,
- IREXIT1 = 12,
- IRPAUSE = 13,
- IREXIT2 = 14,
- IRUPDATE = 15
- };
- struct altera_jtag {
- /* Global variable to store the current JTAG state */
- enum altera_jtag_state jtag_state;
- /* Store current stop-state for DR and IR scan commands */
- enum altera_jtag_state drstop_state;
- enum altera_jtag_state irstop_state;
- /* Store current padding values */
- u32 dr_pre;
- u32 dr_post;
- u32 ir_pre;
- u32 ir_post;
- u32 dr_length;
- u32 ir_length;
- u8 *dr_pre_data;
- u8 *dr_post_data;
- u8 *ir_pre_data;
- u8 *ir_post_data;
- u8 *dr_buffer;
- u8 *ir_buffer;
- };
- #define ALTERA_STACK_SIZE 128
- #define ALTERA_MESSAGE_LENGTH 1024
- struct altera_state {
- struct altera_config *config;
- struct altera_jtag js;
- char msg_buff[ALTERA_MESSAGE_LENGTH + 1];
- long stack[ALTERA_STACK_SIZE];
- };
- int altera_jinit(struct altera_state *astate);
- int altera_set_drstop(struct altera_jtag *js, enum altera_jtag_state state);
- int altera_set_irstop(struct altera_jtag *js, enum altera_jtag_state state);
- int altera_set_dr_pre(struct altera_jtag *js, u32 count, u32 start_index,
- u8 *preamble_data);
- int altera_set_ir_pre(struct altera_jtag *js, u32 count, u32 start_index,
- u8 *preamble_data);
- int altera_set_dr_post(struct altera_jtag *js, u32 count, u32 start_index,
- u8 *postamble_data);
- int altera_set_ir_post(struct altera_jtag *js, u32 count, u32 start_index,
- u8 *postamble_data);
- int altera_goto_jstate(struct altera_state *astate,
- enum altera_jtag_state state);
- int altera_wait_cycles(struct altera_state *astate, s32 cycles,
- enum altera_jtag_state wait_state);
- int altera_wait_msecs(struct altera_state *astate, s32 microseconds,
- enum altera_jtag_state wait_state);
- int altera_irscan(struct altera_state *astate, u32 count,
- u8 *tdi_data, u32 start_index);
- int altera_swap_ir(struct altera_state *astate,
- u32 count, u8 *in_data,
- u32 in_index, u8 *out_data,
- u32 out_index);
- int altera_drscan(struct altera_state *astate, u32 count,
- u8 *tdi_data, u32 start_index);
- int altera_swap_dr(struct altera_state *astate, u32 count,
- u8 *in_data, u32 in_index,
- u8 *out_data, u32 out_index);
- void altera_free_buffers(struct altera_state *astate);
- #endif /* ALTERA_JTAG_H */
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