| /* | |
| * 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 */ |