| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * 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> |
| */ |
| |
| #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 */ |
