// SPDX-License-Identifier: GPL-2.0 /* * DFL device driver for Nios private feature on Intel PAC (Programmable * Acceleration Card) N3000 * * Copyright (C) 2019-2020 Intel Corporation, Inc. * * Authors: * Wu Hao <[email protected]> * Xu Yilun <[email protected]> */ #include <linux/bitfield.h> #include <linux/dfl.h> #include <linux/errno.h> #include <linux/io.h> #include <linux/io-64-nonatomic-lo-hi.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/stddef.h> #include <linux/spi/altera.h> #include <linux/spi/spi.h> #include <linux/types.h> /* * N3000 Nios private feature registers, named as NIOS_SPI_XX on spec. * NS is the abbreviation of NIOS_SPI. */ #define N3000_NS_PARAM … #define N3000_NS_PARAM_SHIFT_MODE_MSK … #define N3000_NS_PARAM_SHIFT_MODE_MSB … #define N3000_NS_PARAM_SHIFT_MODE_LSB … #define N3000_NS_PARAM_DATA_WIDTH … #define N3000_NS_PARAM_NUM_CS … #define N3000_NS_PARAM_CLK_POL … #define N3000_NS_PARAM_CLK_PHASE … #define N3000_NS_PARAM_PERIPHERAL_ID … #define N3000_NS_CTRL … #define N3000_NS_CTRL_WR_DATA … #define N3000_NS_CTRL_ADDR … #define N3000_NS_CTRL_CMD_MSK … #define N3000_NS_CTRL_CMD_NOP … #define N3000_NS_CTRL_CMD_RD … #define N3000_NS_CTRL_CMD_WR … #define N3000_NS_STAT … #define N3000_NS_STAT_RD_DATA … #define N3000_NS_STAT_RW_VAL … /* Nios handshake registers, indirect access */ #define N3000_NIOS_INIT … #define N3000_NIOS_INIT_DONE … #define N3000_NIOS_INIT_START … /* Mode for retimer A, link 0, the same below */ #define N3000_NIOS_INIT_REQ_FEC_MODE_A0_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_A1_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_A2_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_A3_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_B0_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_B1_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_B2_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_B3_MSK … #define N3000_NIOS_INIT_REQ_FEC_MODE_NO … #define N3000_NIOS_INIT_REQ_FEC_MODE_KR … #define N3000_NIOS_INIT_REQ_FEC_MODE_RS … #define N3000_NIOS_FW_VERSION … #define N3000_NIOS_FW_VERSION_PATCH … #define N3000_NIOS_FW_VERSION_MINOR … #define N3000_NIOS_FW_VERSION_MAJOR … /* The retimers we use on Intel PAC N3000 is Parkvale, abbreviated to PKVL */ #define N3000_NIOS_PKVL_A_MODE_STS … #define N3000_NIOS_PKVL_B_MODE_STS … #define N3000_NIOS_PKVL_MODE_STS_GROUP_MSK … #define N3000_NIOS_PKVL_MODE_STS_GROUP_OK … #define N3000_NIOS_PKVL_MODE_STS_ID_MSK … /* When GROUP MASK field == GROUP_OK */ #define N3000_NIOS_PKVL_MODE_ID_RESET … #define N3000_NIOS_PKVL_MODE_ID_4X10G … #define N3000_NIOS_PKVL_MODE_ID_4X25G … #define N3000_NIOS_PKVL_MODE_ID_2X25G … #define N3000_NIOS_PKVL_MODE_ID_2X25G_2X10G … #define N3000_NIOS_PKVL_MODE_ID_1X25G … #define N3000_NIOS_REGBUS_RETRY_COUNT … #define N3000_NIOS_INIT_TIMEOUT … #define N3000_NIOS_INIT_TIME_INTV … #define N3000_NIOS_INIT_REQ_FEC_MODE_MSK_ALL … #define N3000_NIOS_INIT_REQ_FEC_MODE_NO_ALL … #define N3000_NIOS_INIT_REQ_FEC_MODE_KR_ALL … #define N3000_NIOS_INIT_REQ_FEC_MODE_RS_ALL … struct n3000_nios { … }; static ssize_t nios_fw_version_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(nios_fw_version); #define IS_MODE_STATUS_OK(mode_stat) … #define IS_RETIMER_FEC_SUPPORTED(retimer_mode) … static int get_retimer_mode(struct n3000_nios *nn, unsigned int mode_stat_reg, unsigned int *retimer_mode) { … } static ssize_t retimer_A_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(retimer_A_mode); static ssize_t retimer_B_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(retimer_B_mode); static ssize_t fec_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(fec_mode); static struct attribute *n3000_nios_attrs[] = …; ATTRIBUTE_GROUPS(…); static int n3000_nios_init_done_check(struct n3000_nios *nn) { … } static struct spi_board_info m10_n3000_info = …; static int create_altera_spi_controller(struct n3000_nios *nn) { … } static void destroy_altera_spi_controller(struct n3000_nios *nn) { … } static int n3000_nios_poll_stat_timeout(void __iomem *base, u64 *v) { … } static int n3000_nios_reg_write(void *context, unsigned int reg, unsigned int val) { … } static int n3000_nios_reg_read(void *context, unsigned int reg, unsigned int *val) { … } static const struct regmap_config n3000_nios_regbus_cfg = …; static int n3000_nios_probe(struct dfl_device *ddev) { … } static void n3000_nios_remove(struct dfl_device *ddev) { … } #define FME_FEATURE_ID_N3000_NIOS … static const struct dfl_device_id n3000_nios_ids[] = …; MODULE_DEVICE_TABLE(dfl, n3000_nios_ids); static struct dfl_driver n3000_nios_driver = …; module_dfl_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux