1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/misc/altera-stapl/altera-jtag.h b/drivers/misc/altera-stapl/altera-jtag.h
new file mode 100644
index 0000000000..90235b31e7
--- /dev/null
+++ b/drivers/misc/altera-stapl/altera-jtag.h
@@ -0,0 +1,99 @@
+/* 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 */