xilinx_transceiver.c File Reference

Driver for the Xilinx High-speed transceiver dynamic reconfiguration. More...

#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include "no_os_util.h"
#include "no_os_error.h"
#include "axi_adxcvr.h"
#include "xilinx_transceiver.h"
#include "no_os_print_log.h"

Include dependency graph for xilinx_transceiver.c:

Macros
#define	OUT_DIV_ADDR   0x88
#define	OUT_DIV_TX_OFFSET   0x4
#define	OUT_DIV_RX_OFFSET   0x0
#define	RXCDR_CFG0_ADDR   0xa8
#define	RXCDR_CFG0_MASK   0xffff
#define	RXCDR_CFG1_ADDR   0xa9
#define	RXCDR_CFG1_MASK   0xffff
#define	RXCDR_CFG2_ADDR   0xaa
#define	RXCDR_CFG2_MASK   0xffff
#define	RXCDR_CFG3_ADDR   0xab
#define	RXCDR_CFG3_MASK   0xffff
#define	RXCDR_CFG4_ADDR   0xac
#define	RXCDR_CFG4_MASK   0x00ff
#define	RX_DFE_LPM_CFG_ADDR   0x29
#define	RX_DFE_LPM_CFG_MASK   0xffff
#define	QPLL_CFG0_ADDR   0x32
#define	QPLL_CFG0_LOWBAND_MASK   0x0040
#define	QPLL_CFG1_ADDR   0x33
#define	QPLL_REFCLK_DIV_M_MASK   0xf800
#define	QPLL_REFCLK_DIV_M_OFFSET   11
#define	QPLL_REFCLK_DIV_M(x)   ((x) << 11)
#define	QPLL_FBDIV_N_ADDR   0x36
#define	QPLL_FBDIV_N_MASK   0x03ff
#define	QPLL_FBDIV_RATIO_ADDR   0x37
#define	QPLL_FBDIV_RATIO_MASK   0x0040
#define	CPLL_CFG0_ADDR   0x5c
#define	CPLL_CFG0_MASK   0xff00
#define	CPLL_CFG1_ADDR   0x5d
#define	CPLL_CFG1_MASK   0xffff
#define	CPLL_REFCLK_DIV_M_ADDR   0x5e
#define	CPLL_REFCLK_DIV_M_MASK   0x1f00
#define	CPLL_FB_DIV_45_N1_MASK   0x0080
#define	CPLL_FBDIV_N2_MASK   0x007f
#define	RX_CLK25_DIV   0x11
#define	RX_CLK25_DIV_OFFSET   6
#define	RX_CLK25_DIV_MASK   0x07c0
#define	TX_CLK25_DIV   0x6a
#define	TX_CLK25_DIV_MASK   0x1f
#define	GTH34_SYSCLK_QPLL1   2
#define	GTX_RX_PRBS_ERR_CNT   0x15c /* 16-bit */
#define	GTH3_RX_PRBS_ERR_CNT   0x15E /* 32-bit */
#define	GTH4_RX_PRBS_ERR_CNT   0x25E /* 32-bit also applied for GTY */
#define	GTH34_QPLL_FBDIV(xcvr, x)   (0x14 + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)
#define	GTH34_QPLL_REFCLK_DIV(xcvr, x)   (0x18 + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)
#define	GTY4_QPLL_CLKOUT_RATE(xcvr, x)   (0x0E + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)

Functions
int	xilinx_xcvr_drp_update (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t reg, uint32_t mask, uint32_t val)
int	xilinx_xcvr_configure_cdr (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t lane_rate, uint32_t out_div, bool lpm_enable)
int	xilinx_xcvr_configure_lpm_dfe_mode (struct xilinx_xcvr *xcvr, uint32_t drp_port, bool lpm)
int	xilinx_xcvr_calc_cpll_config (struct xilinx_xcvr *xcvr, uint32_t refclk_khz, uint32_t lane_rate_khz, struct xilinx_xcvr_cpll_config *conf, uint32_t *out_div)
int	xilinx_xcvr_calc_qpll_config (struct xilinx_xcvr *xcvr, uint32_t sys_clk_sel, uint32_t refclk_khz, uint32_t lane_rate_khz, struct xilinx_xcvr_qpll_config *conf, uint32_t *out_div)
int	xilinx_xcvr_gtx2_cpll_read_config (struct xilinx_xcvr *xcvr, uint32_t drp_port, struct xilinx_xcvr_cpll_config *conf)
int	xilinx_xcvr_cpll_read_config (struct xilinx_xcvr *xcvr, uint32_t drp_port, struct xilinx_xcvr_cpll_config *conf)
int	xilinx_xcvr_cpll_write_config (struct xilinx_xcvr *xcvr, uint32_t drp_port, const struct xilinx_xcvr_cpll_config *conf)
int	xilinx_xcvr_cpll_calc_lane_rate (struct xilinx_xcvr *xcvr, uint32_t refclk_hz, const struct xilinx_xcvr_cpll_config *conf, uint32_t out_div)
int	xilinx_xcvr_qpll_read_config (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t sys_clk_sel, struct xilinx_xcvr_qpll_config *conf)
int	xilinx_xcvr_qpll_write_config (struct xilinx_xcvr *xcvr, uint32_t sys_clk_sel, uint32_t drp_port, const struct xilinx_xcvr_qpll_config *conf)
int	xilinx_xcvr_qpll_calc_lane_rate (struct xilinx_xcvr *xcvr, uint32_t refclk_hz, const struct xilinx_xcvr_qpll_config *conf, uint32_t out_div)
int	xilinx_xcvr_read_out_div (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t *rx_out_div, uint32_t *tx_out_div)
int	xilinx_xcvr_write_out_div (struct xilinx_xcvr *xcvr, uint32_t drp_port, int32_t rx_out_div, int32_t tx_out_div)
int	xilinx_xcvr_write_prog_div (struct xilinx_xcvr *xcvr, uint32_t drp_port, int32_t rx_prog_div, int32_t tx_prog_div)
int	xilinx_xcvr_write_prog_div_rate (struct xilinx_xcvr *xcvr, uint32_t drp_port, int32_t rx_rate, int32_t tx_rate)
int	xilinx_xcvr_write_async_gearbox_en (struct xilinx_xcvr *xcvr, uint32_t drp_port, bool en)
int	xilinx_xcvr_write_rx_clk25_div (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t div)
int	xilinx_xcvr_write_tx_clk25_div (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t div)
int	xilinx_xcvr_prbsel_enc_get (struct xilinx_xcvr *xcvr, uint32_t prbs, bool reverse_lu)
int	xilinx_xcvr_prbs_err_cnt_get (struct xilinx_xcvr *xcvr, uint32_t drp_port, uint32_t *cnt)

Detailed Description

Driver for the Xilinx High-speed transceiver dynamic reconfiguration.

Author

DBogdan (drago.nosp@m.s.bo.nosp@m.gdan@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2018(c) Analog Devices, Inc.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

CPLL_CFG0_ADDR

#define CPLL_CFG0_ADDR   0x5c

CPLL_CFG0_MASK

#define CPLL_CFG0_MASK   0xff00

CPLL_CFG1_ADDR

#define CPLL_CFG1_ADDR   0x5d

CPLL_CFG1_MASK

#define CPLL_CFG1_MASK   0xffff

CPLL_FB_DIV_45_N1_MASK

#define CPLL_FB_DIV_45_N1_MASK   0x0080

CPLL_FBDIV_N2_MASK

#define CPLL_FBDIV_N2_MASK   0x007f

CPLL_REFCLK_DIV_M_ADDR

#define CPLL_REFCLK_DIV_M_ADDR   0x5e

CPLL_REFCLK_DIV_M_MASK

#define CPLL_REFCLK_DIV_M_MASK   0x1f00

GTH34_QPLL_FBDIV

#define GTH34_QPLL_FBDIV	(		xcvr,
			x
	)		(0x14 + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)

GTH34_QPLL_REFCLK_DIV

#define GTH34_QPLL_REFCLK_DIV	(		xcvr,
			x
	)		(0x18 + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)

GTH34_SYSCLK_QPLL1

#define GTH34_SYSCLK_QPLL1   2

GTH3_RX_PRBS_ERR_CNT

#define GTH3_RX_PRBS_ERR_CNT   0x15E /* 32-bit */

GTH4_RX_PRBS_ERR_CNT

#define GTH4_RX_PRBS_ERR_CNT   0x25E /* 32-bit also applied for GTY */

GTX_RX_PRBS_ERR_CNT

#define GTX_RX_PRBS_ERR_CNT   0x15c /* 16-bit */

GTY4_QPLL_CLKOUT_RATE

#define GTY4_QPLL_CLKOUT_RATE	(		xcvr,
			x
	)		(0x0E + xilinx_xcvr_qpll_sel((xcvr), (x)) * 0x80)

OUT_DIV_ADDR

#define OUT_DIV_ADDR   0x88

OUT_DIV_RX_OFFSET

#define OUT_DIV_RX_OFFSET   0x0

OUT_DIV_TX_OFFSET

#define OUT_DIV_TX_OFFSET   0x4

QPLL_CFG0_ADDR

#define QPLL_CFG0_ADDR   0x32

QPLL_CFG0_LOWBAND_MASK

#define QPLL_CFG0_LOWBAND_MASK   0x0040

QPLL_CFG1_ADDR

#define QPLL_CFG1_ADDR   0x33

QPLL_FBDIV_N_ADDR

#define QPLL_FBDIV_N_ADDR   0x36

QPLL_FBDIV_N_MASK

#define QPLL_FBDIV_N_MASK   0x03ff

QPLL_FBDIV_RATIO_ADDR

#define QPLL_FBDIV_RATIO_ADDR   0x37

QPLL_FBDIV_RATIO_MASK

#define QPLL_FBDIV_RATIO_MASK   0x0040

QPLL_REFCLK_DIV_M

#define QPLL_REFCLK_DIV_M

(

x

)

((x) << 11)

QPLL_REFCLK_DIV_M_MASK

#define QPLL_REFCLK_DIV_M_MASK   0xf800

QPLL_REFCLK_DIV_M_OFFSET

#define QPLL_REFCLK_DIV_M_OFFSET   11

RX_CLK25_DIV

#define RX_CLK25_DIV   0x11

RX_CLK25_DIV_MASK

#define RX_CLK25_DIV_MASK   0x07c0

RX_CLK25_DIV_OFFSET

#define RX_CLK25_DIV_OFFSET   6

RX_DFE_LPM_CFG_ADDR

#define RX_DFE_LPM_CFG_ADDR   0x29

RX_DFE_LPM_CFG_MASK

#define RX_DFE_LPM_CFG_MASK   0xffff

RXCDR_CFG0_ADDR

#define RXCDR_CFG0_ADDR   0xa8

RXCDR_CFG0_MASK

#define RXCDR_CFG0_MASK   0xffff

RXCDR_CFG1_ADDR

#define RXCDR_CFG1_ADDR   0xa9

RXCDR_CFG1_MASK

#define RXCDR_CFG1_MASK   0xffff

RXCDR_CFG2_ADDR

#define RXCDR_CFG2_ADDR   0xaa

RXCDR_CFG2_MASK

#define RXCDR_CFG2_MASK   0xffff

RXCDR_CFG3_ADDR

#define RXCDR_CFG3_ADDR   0xab

RXCDR_CFG3_MASK

#define RXCDR_CFG3_MASK   0xffff

RXCDR_CFG4_ADDR

#define RXCDR_CFG4_ADDR   0xac

RXCDR_CFG4_MASK

#define RXCDR_CFG4_MASK   0x00ff

TX_CLK25_DIV

#define TX_CLK25_DIV   0x6a

TX_CLK25_DIV_MASK

#define TX_CLK25_DIV_MASK   0x1f

Function Documentation

xilinx_xcvr_calc_cpll_config()

int xilinx_xcvr_calc_cpll_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	refclk_khz,
		uint32_t	lane_rate_khz,
		struct xilinx_xcvr_cpll_config *	conf,
		uint32_t *	out_div
	)

Configure Channel PLL.

Ref: https://www.xilinx.com/support/documentation/user_guides/ug476_7Series_Transceivers.pdf Page: 48 Vco_Freq = (RefClk * n1 * n2) / m LineRate = (Vco_Freq * 2) / d

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xilinx_xcvr_calc_qpll_config()

int xilinx_xcvr_calc_qpll_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	sys_clk_sel,
		uint32_t	refclk_khz,
		uint32_t	lane_rate_khz,
		struct xilinx_xcvr_qpll_config *	conf,
		uint32_t *	out_div
	)

Calculate Quad PLL configuration parameters.

Ref: https://www.xilinx.com/support/documentation/user_guides/ug476_7Series_Transceivers.pdf Page: 55 Vco_Freq = (refclk_khz * n) / m LineRate = Vco_Freq / d

Make sure to not confuse Vco_Freq with fPLLClkout. fPLLClkout = (refclk_khz * n) / (m * 2), so technically Vco_Freq = 2 * fPLLClkout And the 2 is reduced in both equations.

Ref: https://www.xilinx.com/support/documentation/user_guides/ug578-ultrascale-gty-transceivers.pdf Page: 49 For GTY4: LineRate = (2 * Vco_Freq) / d Try Full-rate

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xilinx_xcvr_configure_cdr()

int xilinx_xcvr_configure_cdr	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t	lane_rate,
		uint32_t	out_div,
		bool	lpm_enable
	)

Configure the Clock Data Recovery circuit.

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xilinx_xcvr_configure_lpm_dfe_mode()

int xilinx_xcvr_configure_lpm_dfe_mode	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		bool	lpm
	)

Selection of Low-Power mode (LPM) or Decision Feedback Equalization (DFE).

xilinx_xcvr_cpll_calc_lane_rate()

int xilinx_xcvr_cpll_calc_lane_rate	(	struct xilinx_xcvr *	xcvr,
		uint32_t	refclk_hz,
		const struct xilinx_xcvr_cpll_config *	conf,
		uint32_t	out_div
	)

Calculate Channel PLL lane rate.

xilinx_xcvr_cpll_read_config()

int xilinx_xcvr_cpll_read_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		struct xilinx_xcvr_cpll_config *	conf
	)

Read Channel PLL configuration.

xilinx_xcvr_cpll_write_config()

int xilinx_xcvr_cpll_write_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		const struct xilinx_xcvr_cpll_config *	conf
	)

Write Channel PLL configuration.

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xilinx_xcvr_drp_update()

int xilinx_xcvr_drp_update	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t	reg,
		uint32_t	mask,
		uint32_t	val
	)

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xilinx_xcvr_gtx2_cpll_read_config()

int xilinx_xcvr_gtx2_cpll_read_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		struct xilinx_xcvr_cpll_config *	conf
	)

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xilinx_xcvr_prbs_err_cnt_get()

int xilinx_xcvr_prbs_err_cnt_get	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t *	cnt
	)

Get PRBS error counter value.

xilinx_xcvr_prbsel_enc_get()

int xilinx_xcvr_prbsel_enc_get	(	struct xilinx_xcvr *	xcvr,
		uint32_t	prbs,
		bool	reverse_lu
	)

Get PRBS generator test pattern control setting.

xilinx_xcvr_qpll_calc_lane_rate()

int xilinx_xcvr_qpll_calc_lane_rate	(	struct xilinx_xcvr *	xcvr,
		uint32_t	refclk_hz,
		const struct xilinx_xcvr_qpll_config *	conf,
		uint32_t	out_div
	)

Calculate Quad PLL lane rate.

xilinx_xcvr_qpll_read_config()

int xilinx_xcvr_qpll_read_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t	sys_clk_sel,
		struct xilinx_xcvr_qpll_config *	conf
	)

Read Quad PLL configuration.

xilinx_xcvr_qpll_write_config()

int xilinx_xcvr_qpll_write_config	(	struct xilinx_xcvr *	xcvr,
		uint32_t	sys_clk_sel,
		uint32_t	drp_port,
		const struct xilinx_xcvr_qpll_config *	conf
	)

Write Quad PLL configuration.

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xilinx_xcvr_read_out_div()

int xilinx_xcvr_read_out_div	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t *	rx_out_div,
		uint32_t *	tx_out_div
	)

Read TX/RXOUT_DIV value.

xilinx_xcvr_write_async_gearbox_en()

int xilinx_xcvr_write_async_gearbox_en	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		bool	en
	)

TX Asynchronous Gearbox.

xilinx_xcvr_write_out_div()

int xilinx_xcvr_write_out_div	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		int32_t	rx_out_div,
		int32_t	tx_out_div
	)

Write TX/RXOUT_DIV value.

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xilinx_xcvr_write_prog_div()

int xilinx_xcvr_write_prog_div	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		int32_t	rx_prog_div,
		int32_t	tx_prog_div
	)

Write RX/TX programmable divider ratio.

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xilinx_xcvr_write_prog_div_rate()

int xilinx_xcvr_write_prog_div_rate	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		int32_t	rx_rate,
		int32_t	tx_rate
	)

Set programmable divider ratio (RX|TX_PROGDIV_RATE), pre-divider value.

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xilinx_xcvr_write_rx_clk25_div()

int xilinx_xcvr_write_rx_clk25_div	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t	div
	)

Write RX_CLK25_DIV value.

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xilinx_xcvr_write_tx_clk25_div()

int xilinx_xcvr_write_tx_clk25_div	(	struct xilinx_xcvr *	xcvr,
		uint32_t	drp_port,
		uint32_t	div
	)

Write RX_CLK25_DIV value.

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