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-rw-r--r--drivers/ptp/ptp_ocp.c3884
1 files changed, 3884 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
new file mode 100644
index 000000000..8fee9b330
--- /dev/null
+++ b/drivers/ptp/ptp_ocp.c
@@ -0,0 +1,3884 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2020 Facebook */
+
+#include <linux/bits.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/serial_8250.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/i2c-xiic.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/xilinx_spi.h>
+#include <net/devlink.h>
+#include <linux/i2c.h>
+#include <linux/mtd/mtd.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/crc16.h>
+
+#define PCI_VENDOR_ID_FACEBOOK 0x1d9b
+#define PCI_DEVICE_ID_FACEBOOK_TIMECARD 0x0400
+
+#define PCI_VENDOR_ID_CELESTICA 0x18d4
+#define PCI_DEVICE_ID_CELESTICA_TIMECARD 0x1008
+
+static struct class timecard_class = {
+ .owner = THIS_MODULE,
+ .name = "timecard",
+};
+
+struct ocp_reg {
+ u32 ctrl;
+ u32 status;
+ u32 select;
+ u32 version;
+ u32 time_ns;
+ u32 time_sec;
+ u32 __pad0[2];
+ u32 adjust_ns;
+ u32 adjust_sec;
+ u32 __pad1[2];
+ u32 offset_ns;
+ u32 offset_window_ns;
+ u32 __pad2[2];
+ u32 drift_ns;
+ u32 drift_window_ns;
+ u32 __pad3[6];
+ u32 servo_offset_p;
+ u32 servo_offset_i;
+ u32 servo_drift_p;
+ u32 servo_drift_i;
+ u32 status_offset;
+ u32 status_drift;
+};
+
+#define OCP_CTRL_ENABLE BIT(0)
+#define OCP_CTRL_ADJUST_TIME BIT(1)
+#define OCP_CTRL_ADJUST_OFFSET BIT(2)
+#define OCP_CTRL_ADJUST_DRIFT BIT(3)
+#define OCP_CTRL_ADJUST_SERVO BIT(8)
+#define OCP_CTRL_READ_TIME_REQ BIT(30)
+#define OCP_CTRL_READ_TIME_DONE BIT(31)
+
+#define OCP_STATUS_IN_SYNC BIT(0)
+#define OCP_STATUS_IN_HOLDOVER BIT(1)
+
+#define OCP_SELECT_CLK_NONE 0
+#define OCP_SELECT_CLK_REG 0xfe
+
+struct tod_reg {
+ u32 ctrl;
+ u32 status;
+ u32 uart_polarity;
+ u32 version;
+ u32 adj_sec;
+ u32 __pad0[3];
+ u32 uart_baud;
+ u32 __pad1[3];
+ u32 utc_status;
+ u32 leap;
+};
+
+#define TOD_CTRL_PROTOCOL BIT(28)
+#define TOD_CTRL_DISABLE_FMT_A BIT(17)
+#define TOD_CTRL_DISABLE_FMT_B BIT(16)
+#define TOD_CTRL_ENABLE BIT(0)
+#define TOD_CTRL_GNSS_MASK GENMASK(3, 0)
+#define TOD_CTRL_GNSS_SHIFT 24
+
+#define TOD_STATUS_UTC_MASK GENMASK(7, 0)
+#define TOD_STATUS_UTC_VALID BIT(8)
+#define TOD_STATUS_LEAP_ANNOUNCE BIT(12)
+#define TOD_STATUS_LEAP_VALID BIT(16)
+
+struct ts_reg {
+ u32 enable;
+ u32 error;
+ u32 polarity;
+ u32 version;
+ u32 __pad0[4];
+ u32 cable_delay;
+ u32 __pad1[3];
+ u32 intr;
+ u32 intr_mask;
+ u32 event_count;
+ u32 __pad2[1];
+ u32 ts_count;
+ u32 time_ns;
+ u32 time_sec;
+ u32 data_width;
+ u32 data;
+};
+
+struct pps_reg {
+ u32 ctrl;
+ u32 status;
+ u32 __pad0[6];
+ u32 cable_delay;
+};
+
+#define PPS_STATUS_FILTER_ERR BIT(0)
+#define PPS_STATUS_SUPERV_ERR BIT(1)
+
+struct img_reg {
+ u32 version;
+};
+
+struct gpio_reg {
+ u32 gpio1;
+ u32 __pad0;
+ u32 gpio2;
+ u32 __pad1;
+};
+
+struct irig_master_reg {
+ u32 ctrl;
+ u32 status;
+ u32 __pad0;
+ u32 version;
+ u32 adj_sec;
+ u32 mode_ctrl;
+};
+
+#define IRIG_M_CTRL_ENABLE BIT(0)
+
+struct irig_slave_reg {
+ u32 ctrl;
+ u32 status;
+ u32 __pad0;
+ u32 version;
+ u32 adj_sec;
+ u32 mode_ctrl;
+};
+
+#define IRIG_S_CTRL_ENABLE BIT(0)
+
+struct dcf_master_reg {
+ u32 ctrl;
+ u32 status;
+ u32 __pad0;
+ u32 version;
+ u32 adj_sec;
+};
+
+#define DCF_M_CTRL_ENABLE BIT(0)
+
+struct dcf_slave_reg {
+ u32 ctrl;
+ u32 status;
+ u32 __pad0;
+ u32 version;
+ u32 adj_sec;
+};
+
+#define DCF_S_CTRL_ENABLE BIT(0)
+
+struct signal_reg {
+ u32 enable;
+ u32 status;
+ u32 polarity;
+ u32 version;
+ u32 __pad0[4];
+ u32 cable_delay;
+ u32 __pad1[3];
+ u32 intr;
+ u32 intr_mask;
+ u32 __pad2[2];
+ u32 start_ns;
+ u32 start_sec;
+ u32 pulse_ns;
+ u32 pulse_sec;
+ u32 period_ns;
+ u32 period_sec;
+ u32 repeat_count;
+};
+
+struct frequency_reg {
+ u32 ctrl;
+ u32 status;
+};
+#define FREQ_STATUS_VALID BIT(31)
+#define FREQ_STATUS_ERROR BIT(30)
+#define FREQ_STATUS_OVERRUN BIT(29)
+#define FREQ_STATUS_MASK GENMASK(23, 0)
+
+struct ptp_ocp_flash_info {
+ const char *name;
+ int pci_offset;
+ int data_size;
+ void *data;
+};
+
+struct ptp_ocp_firmware_header {
+ char magic[4];
+ __be16 pci_vendor_id;
+ __be16 pci_device_id;
+ __be32 image_size;
+ __be16 hw_revision;
+ __be16 crc;
+};
+
+#define OCP_FIRMWARE_MAGIC_HEADER "OCPC"
+
+struct ptp_ocp_i2c_info {
+ const char *name;
+ unsigned long fixed_rate;
+ size_t data_size;
+ void *data;
+};
+
+struct ptp_ocp_ext_info {
+ int index;
+ irqreturn_t (*irq_fcn)(int irq, void *priv);
+ int (*enable)(void *priv, u32 req, bool enable);
+};
+
+struct ptp_ocp_ext_src {
+ void __iomem *mem;
+ struct ptp_ocp *bp;
+ struct ptp_ocp_ext_info *info;
+ int irq_vec;
+};
+
+enum ptp_ocp_sma_mode {
+ SMA_MODE_IN,
+ SMA_MODE_OUT,
+};
+
+struct ptp_ocp_sma_connector {
+ enum ptp_ocp_sma_mode mode;
+ bool fixed_fcn;
+ bool fixed_dir;
+ bool disabled;
+ u8 default_fcn;
+};
+
+struct ocp_attr_group {
+ u64 cap;
+ const struct attribute_group *group;
+};
+
+#define OCP_CAP_BASIC BIT(0)
+#define OCP_CAP_SIGNAL BIT(1)
+#define OCP_CAP_FREQ BIT(2)
+
+struct ptp_ocp_signal {
+ ktime_t period;
+ ktime_t pulse;
+ ktime_t phase;
+ ktime_t start;
+ int duty;
+ bool polarity;
+ bool running;
+};
+
+#define OCP_BOARD_ID_LEN 13
+#define OCP_SERIAL_LEN 6
+
+struct ptp_ocp {
+ struct pci_dev *pdev;
+ struct device dev;
+ spinlock_t lock;
+ struct ocp_reg __iomem *reg;
+ struct tod_reg __iomem *tod;
+ struct pps_reg __iomem *pps_to_ext;
+ struct pps_reg __iomem *pps_to_clk;
+ struct gpio_reg __iomem *pps_select;
+ struct gpio_reg __iomem *sma_map1;
+ struct gpio_reg __iomem *sma_map2;
+ struct irig_master_reg __iomem *irig_out;
+ struct irig_slave_reg __iomem *irig_in;
+ struct dcf_master_reg __iomem *dcf_out;
+ struct dcf_slave_reg __iomem *dcf_in;
+ struct tod_reg __iomem *nmea_out;
+ struct frequency_reg __iomem *freq_in[4];
+ struct ptp_ocp_ext_src *signal_out[4];
+ struct ptp_ocp_ext_src *pps;
+ struct ptp_ocp_ext_src *ts0;
+ struct ptp_ocp_ext_src *ts1;
+ struct ptp_ocp_ext_src *ts2;
+ struct ptp_ocp_ext_src *ts3;
+ struct ptp_ocp_ext_src *ts4;
+ struct img_reg __iomem *image;
+ struct ptp_clock *ptp;
+ struct ptp_clock_info ptp_info;
+ struct platform_device *i2c_ctrl;
+ struct platform_device *spi_flash;
+ struct clk_hw *i2c_clk;
+ struct timer_list watchdog;
+ const struct attribute_group **attr_group;
+ const struct ptp_ocp_eeprom_map *eeprom_map;
+ struct dentry *debug_root;
+ time64_t gnss_lost;
+ int id;
+ int n_irqs;
+ int gnss_port;
+ int gnss2_port;
+ int mac_port; /* miniature atomic clock */
+ int nmea_port;
+ bool fw_loader;
+ u8 fw_tag;
+ u16 fw_version;
+ u8 board_id[OCP_BOARD_ID_LEN];
+ u8 serial[OCP_SERIAL_LEN];
+ bool has_eeprom_data;
+ u32 pps_req_map;
+ int flash_start;
+ u32 utc_tai_offset;
+ u32 ts_window_adjust;
+ u64 fw_cap;
+ struct ptp_ocp_signal signal[4];
+ struct ptp_ocp_sma_connector sma[4];
+ const struct ocp_sma_op *sma_op;
+};
+
+#define OCP_REQ_TIMESTAMP BIT(0)
+#define OCP_REQ_PPS BIT(1)
+
+struct ocp_resource {
+ unsigned long offset;
+ int size;
+ int irq_vec;
+ int (*setup)(struct ptp_ocp *bp, struct ocp_resource *r);
+ void *extra;
+ unsigned long bp_offset;
+ const char * const name;
+};
+
+static int ptp_ocp_register_mem(struct ptp_ocp *bp, struct ocp_resource *r);
+static int ptp_ocp_register_i2c(struct ptp_ocp *bp, struct ocp_resource *r);
+static int ptp_ocp_register_spi(struct ptp_ocp *bp, struct ocp_resource *r);
+static int ptp_ocp_register_serial(struct ptp_ocp *bp, struct ocp_resource *r);
+static int ptp_ocp_register_ext(struct ptp_ocp *bp, struct ocp_resource *r);
+static int ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r);
+static irqreturn_t ptp_ocp_ts_irq(int irq, void *priv);
+static irqreturn_t ptp_ocp_signal_irq(int irq, void *priv);
+static int ptp_ocp_ts_enable(void *priv, u32 req, bool enable);
+static int ptp_ocp_signal_from_perout(struct ptp_ocp *bp, int gen,
+ struct ptp_perout_request *req);
+static int ptp_ocp_signal_enable(void *priv, u32 req, bool enable);
+static int ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr);
+
+static const struct ocp_attr_group fb_timecard_groups[];
+
+struct ptp_ocp_eeprom_map {
+ u16 off;
+ u16 len;
+ u32 bp_offset;
+ const void * const tag;
+};
+
+#define EEPROM_ENTRY(addr, member) \
+ .off = addr, \
+ .len = sizeof_field(struct ptp_ocp, member), \
+ .bp_offset = offsetof(struct ptp_ocp, member)
+
+#define BP_MAP_ENTRY_ADDR(bp, map) ({ \
+ (void *)((uintptr_t)(bp) + (map)->bp_offset); \
+})
+
+static struct ptp_ocp_eeprom_map fb_eeprom_map[] = {
+ { EEPROM_ENTRY(0x43, board_id) },
+ { EEPROM_ENTRY(0x00, serial), .tag = "mac" },
+ { }
+};
+
+#define bp_assign_entry(bp, res, val) ({ \
+ uintptr_t addr = (uintptr_t)(bp) + (res)->bp_offset; \
+ *(typeof(val) *)addr = val; \
+})
+
+#define OCP_RES_LOCATION(member) \
+ .name = #member, .bp_offset = offsetof(struct ptp_ocp, member)
+
+#define OCP_MEM_RESOURCE(member) \
+ OCP_RES_LOCATION(member), .setup = ptp_ocp_register_mem
+
+#define OCP_SERIAL_RESOURCE(member) \
+ OCP_RES_LOCATION(member), .setup = ptp_ocp_register_serial
+
+#define OCP_I2C_RESOURCE(member) \
+ OCP_RES_LOCATION(member), .setup = ptp_ocp_register_i2c
+
+#define OCP_SPI_RESOURCE(member) \
+ OCP_RES_LOCATION(member), .setup = ptp_ocp_register_spi
+
+#define OCP_EXT_RESOURCE(member) \
+ OCP_RES_LOCATION(member), .setup = ptp_ocp_register_ext
+
+/* This is the MSI vector mapping used.
+ * 0: PPS (TS5)
+ * 1: TS0
+ * 2: TS1
+ * 3: GNSS1
+ * 4: GNSS2
+ * 5: MAC
+ * 6: TS2
+ * 7: I2C controller
+ * 8: HWICAP (notused)
+ * 9: SPI Flash
+ * 10: NMEA
+ * 11: Signal Generator 1
+ * 12: Signal Generator 2
+ * 13: Signal Generator 3
+ * 14: Signal Generator 4
+ * 15: TS3
+ * 16: TS4
+ */
+
+static struct ocp_resource ocp_fb_resource[] = {
+ {
+ OCP_MEM_RESOURCE(reg),
+ .offset = 0x01000000, .size = 0x10000,
+ },
+ {
+ OCP_EXT_RESOURCE(ts0),
+ .offset = 0x01010000, .size = 0x10000, .irq_vec = 1,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 0,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(ts1),
+ .offset = 0x01020000, .size = 0x10000, .irq_vec = 2,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 1,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(ts2),
+ .offset = 0x01060000, .size = 0x10000, .irq_vec = 6,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 2,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(ts3),
+ .offset = 0x01110000, .size = 0x10000, .irq_vec = 15,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 3,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(ts4),
+ .offset = 0x01120000, .size = 0x10000, .irq_vec = 16,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 4,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ /* Timestamp for PHC and/or PPS generator */
+ {
+ OCP_EXT_RESOURCE(pps),
+ .offset = 0x010C0000, .size = 0x10000, .irq_vec = 0,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 5,
+ .irq_fcn = ptp_ocp_ts_irq,
+ .enable = ptp_ocp_ts_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(signal_out[0]),
+ .offset = 0x010D0000, .size = 0x10000, .irq_vec = 11,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 1,
+ .irq_fcn = ptp_ocp_signal_irq,
+ .enable = ptp_ocp_signal_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(signal_out[1]),
+ .offset = 0x010E0000, .size = 0x10000, .irq_vec = 12,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 2,
+ .irq_fcn = ptp_ocp_signal_irq,
+ .enable = ptp_ocp_signal_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(signal_out[2]),
+ .offset = 0x010F0000, .size = 0x10000, .irq_vec = 13,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 3,
+ .irq_fcn = ptp_ocp_signal_irq,
+ .enable = ptp_ocp_signal_enable,
+ },
+ },
+ {
+ OCP_EXT_RESOURCE(signal_out[3]),
+ .offset = 0x01100000, .size = 0x10000, .irq_vec = 14,
+ .extra = &(struct ptp_ocp_ext_info) {
+ .index = 4,
+ .irq_fcn = ptp_ocp_signal_irq,
+ .enable = ptp_ocp_signal_enable,
+ },
+ },
+ {
+ OCP_MEM_RESOURCE(pps_to_ext),
+ .offset = 0x01030000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(pps_to_clk),
+ .offset = 0x01040000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(tod),
+ .offset = 0x01050000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(irig_in),
+ .offset = 0x01070000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(irig_out),
+ .offset = 0x01080000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(dcf_in),
+ .offset = 0x01090000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(dcf_out),
+ .offset = 0x010A0000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(nmea_out),
+ .offset = 0x010B0000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(image),
+ .offset = 0x00020000, .size = 0x1000,
+ },
+ {
+ OCP_MEM_RESOURCE(pps_select),
+ .offset = 0x00130000, .size = 0x1000,
+ },
+ {
+ OCP_MEM_RESOURCE(sma_map1),
+ .offset = 0x00140000, .size = 0x1000,
+ },
+ {
+ OCP_MEM_RESOURCE(sma_map2),
+ .offset = 0x00220000, .size = 0x1000,
+ },
+ {
+ OCP_I2C_RESOURCE(i2c_ctrl),
+ .offset = 0x00150000, .size = 0x10000, .irq_vec = 7,
+ .extra = &(struct ptp_ocp_i2c_info) {
+ .name = "xiic-i2c",
+ .fixed_rate = 50000000,
+ .data_size = sizeof(struct xiic_i2c_platform_data),
+ .data = &(struct xiic_i2c_platform_data) {
+ .num_devices = 2,
+ .devices = (struct i2c_board_info[]) {
+ { I2C_BOARD_INFO("24c02", 0x50) },
+ { I2C_BOARD_INFO("24mac402", 0x58),
+ .platform_data = "mac" },
+ },
+ },
+ },
+ },
+ {
+ OCP_SERIAL_RESOURCE(gnss_port),
+ .offset = 0x00160000 + 0x1000, .irq_vec = 3,
+ },
+ {
+ OCP_SERIAL_RESOURCE(gnss2_port),
+ .offset = 0x00170000 + 0x1000, .irq_vec = 4,
+ },
+ {
+ OCP_SERIAL_RESOURCE(mac_port),
+ .offset = 0x00180000 + 0x1000, .irq_vec = 5,
+ },
+ {
+ OCP_SERIAL_RESOURCE(nmea_port),
+ .offset = 0x00190000 + 0x1000, .irq_vec = 10,
+ },
+ {
+ OCP_SPI_RESOURCE(spi_flash),
+ .offset = 0x00310000, .size = 0x10000, .irq_vec = 9,
+ .extra = &(struct ptp_ocp_flash_info) {
+ .name = "xilinx_spi", .pci_offset = 0,
+ .data_size = sizeof(struct xspi_platform_data),
+ .data = &(struct xspi_platform_data) {
+ .num_chipselect = 1,
+ .bits_per_word = 8,
+ .num_devices = 1,
+ .devices = &(struct spi_board_info) {
+ .modalias = "spi-nor",
+ },
+ },
+ },
+ },
+ {
+ OCP_MEM_RESOURCE(freq_in[0]),
+ .offset = 0x01200000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(freq_in[1]),
+ .offset = 0x01210000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(freq_in[2]),
+ .offset = 0x01220000, .size = 0x10000,
+ },
+ {
+ OCP_MEM_RESOURCE(freq_in[3]),
+ .offset = 0x01230000, .size = 0x10000,
+ },
+ {
+ .setup = ptp_ocp_fb_board_init,
+ },
+ { }
+};
+
+static const struct pci_device_id ptp_ocp_pcidev_id[] = {
+ { PCI_DEVICE_DATA(FACEBOOK, TIMECARD, &ocp_fb_resource) },
+ { PCI_DEVICE_DATA(CELESTICA, TIMECARD, &ocp_fb_resource) },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, ptp_ocp_pcidev_id);
+
+static DEFINE_MUTEX(ptp_ocp_lock);
+static DEFINE_IDR(ptp_ocp_idr);
+
+struct ocp_selector {
+ const char *name;
+ int value;
+};
+
+static const struct ocp_selector ptp_ocp_clock[] = {
+ { .name = "NONE", .value = 0 },
+ { .name = "TOD", .value = 1 },
+ { .name = "IRIG", .value = 2 },
+ { .name = "PPS", .value = 3 },
+ { .name = "PTP", .value = 4 },
+ { .name = "RTC", .value = 5 },
+ { .name = "DCF", .value = 6 },
+ { .name = "REGS", .value = 0xfe },
+ { .name = "EXT", .value = 0xff },
+ { }
+};
+
+#define SMA_DISABLE BIT(16)
+#define SMA_ENABLE BIT(15)
+#define SMA_SELECT_MASK GENMASK(14, 0)
+
+static const struct ocp_selector ptp_ocp_sma_in[] = {
+ { .name = "10Mhz", .value = 0x0000 },
+ { .name = "PPS1", .value = 0x0001 },
+ { .name = "PPS2", .value = 0x0002 },
+ { .name = "TS1", .value = 0x0004 },
+ { .name = "TS2", .value = 0x0008 },
+ { .name = "IRIG", .value = 0x0010 },
+ { .name = "DCF", .value = 0x0020 },
+ { .name = "TS3", .value = 0x0040 },
+ { .name = "TS4", .value = 0x0080 },
+ { .name = "FREQ1", .value = 0x0100 },
+ { .name = "FREQ2", .value = 0x0200 },
+ { .name = "FREQ3", .value = 0x0400 },
+ { .name = "FREQ4", .value = 0x0800 },
+ { .name = "None", .value = SMA_DISABLE },
+ { }
+};
+
+static const struct ocp_selector ptp_ocp_sma_out[] = {
+ { .name = "10Mhz", .value = 0x0000 },
+ { .name = "PHC", .value = 0x0001 },
+ { .name = "MAC", .value = 0x0002 },
+ { .name = "GNSS1", .value = 0x0004 },
+ { .name = "GNSS2", .value = 0x0008 },
+ { .name = "IRIG", .value = 0x0010 },
+ { .name = "DCF", .value = 0x0020 },
+ { .name = "GEN1", .value = 0x0040 },
+ { .name = "GEN2", .value = 0x0080 },
+ { .name = "GEN3", .value = 0x0100 },
+ { .name = "GEN4", .value = 0x0200 },
+ { .name = "GND", .value = 0x2000 },
+ { .name = "VCC", .value = 0x4000 },
+ { }
+};
+
+struct ocp_sma_op {
+ const struct ocp_selector *tbl[2];
+ void (*init)(struct ptp_ocp *bp);
+ u32 (*get)(struct ptp_ocp *bp, int sma_nr);
+ int (*set_inputs)(struct ptp_ocp *bp, int sma_nr, u32 val);
+ int (*set_output)(struct ptp_ocp *bp, int sma_nr, u32 val);
+};
+
+static void
+ptp_ocp_sma_init(struct ptp_ocp *bp)
+{
+ return bp->sma_op->init(bp);
+}
+
+static u32
+ptp_ocp_sma_get(struct ptp_ocp *bp, int sma_nr)
+{
+ return bp->sma_op->get(bp, sma_nr);
+}
+
+static int
+ptp_ocp_sma_set_inputs(struct ptp_ocp *bp, int sma_nr, u32 val)
+{
+ return bp->sma_op->set_inputs(bp, sma_nr, val);
+}
+
+static int
+ptp_ocp_sma_set_output(struct ptp_ocp *bp, int sma_nr, u32 val)
+{
+ return bp->sma_op->set_output(bp, sma_nr, val);
+}
+
+static const char *
+ptp_ocp_select_name_from_val(const struct ocp_selector *tbl, int val)
+{
+ int i;
+
+ for (i = 0; tbl[i].name; i++)
+ if (tbl[i].value == val)
+ return tbl[i].name;
+ return NULL;
+}
+
+static int
+ptp_ocp_select_val_from_name(const struct ocp_selector *tbl, const char *name)
+{
+ const char *select;
+ int i;
+
+ for (i = 0; tbl[i].name; i++) {
+ select = tbl[i].name;
+ if (!strncasecmp(name, select, strlen(select)))
+ return tbl[i].value;
+ }
+ return -EINVAL;
+}
+
+static ssize_t
+ptp_ocp_select_table_show(const struct ocp_selector *tbl, char *buf)
+{
+ ssize_t count;
+ int i;
+
+ count = 0;
+ for (i = 0; tbl[i].name; i++)
+ count += sysfs_emit_at(buf, count, "%s ", tbl[i].name);
+ if (count)
+ count--;
+ count += sysfs_emit_at(buf, count, "\n");
+ return count;
+}
+
+static int
+__ptp_ocp_gettime_locked(struct ptp_ocp *bp, struct timespec64 *ts,
+ struct ptp_system_timestamp *sts)
+{
+ u32 ctrl, time_sec, time_ns;
+ int i;
+
+ ptp_read_system_prets(sts);
+
+ ctrl = OCP_CTRL_READ_TIME_REQ | OCP_CTRL_ENABLE;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ for (i = 0; i < 100; i++) {
+ ctrl = ioread32(&bp->reg->ctrl);
+ if (ctrl & OCP_CTRL_READ_TIME_DONE)
+ break;
+ }
+ ptp_read_system_postts(sts);
+
+ if (sts && bp->ts_window_adjust) {
+ s64 ns = timespec64_to_ns(&sts->post_ts);
+
+ sts->post_ts = ns_to_timespec64(ns - bp->ts_window_adjust);
+ }
+
+ time_ns = ioread32(&bp->reg->time_ns);
+ time_sec = ioread32(&bp->reg->time_sec);
+
+ ts->tv_sec = time_sec;
+ ts->tv_nsec = time_ns;
+
+ return ctrl & OCP_CTRL_READ_TIME_DONE ? 0 : -ETIMEDOUT;
+}
+
+static int
+ptp_ocp_gettimex(struct ptp_clock_info *ptp_info, struct timespec64 *ts,
+ struct ptp_system_timestamp *sts)
+{
+ struct ptp_ocp *bp = container_of(ptp_info, struct ptp_ocp, ptp_info);
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ err = __ptp_ocp_gettime_locked(bp, ts, sts);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return err;
+}
+
+static void
+__ptp_ocp_settime_locked(struct ptp_ocp *bp, const struct timespec64 *ts)
+{
+ u32 ctrl, time_sec, time_ns;
+ u32 select;
+
+ time_ns = ts->tv_nsec;
+ time_sec = ts->tv_sec;
+
+ select = ioread32(&bp->reg->select);
+ iowrite32(OCP_SELECT_CLK_REG, &bp->reg->select);
+
+ iowrite32(time_ns, &bp->reg->adjust_ns);
+ iowrite32(time_sec, &bp->reg->adjust_sec);
+
+ ctrl = OCP_CTRL_ADJUST_TIME | OCP_CTRL_ENABLE;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ /* restore clock selection */
+ iowrite32(select >> 16, &bp->reg->select);
+}
+
+static int
+ptp_ocp_settime(struct ptp_clock_info *ptp_info, const struct timespec64 *ts)
+{
+ struct ptp_ocp *bp = container_of(ptp_info, struct ptp_ocp, ptp_info);
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ __ptp_ocp_settime_locked(bp, ts);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return 0;
+}
+
+static void
+__ptp_ocp_adjtime_locked(struct ptp_ocp *bp, u32 adj_val)
+{
+ u32 select, ctrl;
+
+ select = ioread32(&bp->reg->select);
+ iowrite32(OCP_SELECT_CLK_REG, &bp->reg->select);
+
+ iowrite32(adj_val, &bp->reg->offset_ns);
+ iowrite32(NSEC_PER_SEC, &bp->reg->offset_window_ns);
+
+ ctrl = OCP_CTRL_ADJUST_OFFSET | OCP_CTRL_ENABLE;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ /* restore clock selection */
+ iowrite32(select >> 16, &bp->reg->select);
+}
+
+static void
+ptp_ocp_adjtime_coarse(struct ptp_ocp *bp, s64 delta_ns)
+{
+ struct timespec64 ts;
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ err = __ptp_ocp_gettime_locked(bp, &ts, NULL);
+ if (likely(!err)) {
+ set_normalized_timespec64(&ts, ts.tv_sec,
+ ts.tv_nsec + delta_ns);
+ __ptp_ocp_settime_locked(bp, &ts);
+ }
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+static int
+ptp_ocp_adjtime(struct ptp_clock_info *ptp_info, s64 delta_ns)
+{
+ struct ptp_ocp *bp = container_of(ptp_info, struct ptp_ocp, ptp_info);
+ unsigned long flags;
+ u32 adj_ns, sign;
+
+ if (delta_ns > NSEC_PER_SEC || -delta_ns > NSEC_PER_SEC) {
+ ptp_ocp_adjtime_coarse(bp, delta_ns);
+ return 0;
+ }
+
+ sign = delta_ns < 0 ? BIT(31) : 0;
+ adj_ns = sign ? -delta_ns : delta_ns;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ __ptp_ocp_adjtime_locked(bp, sign | adj_ns);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return 0;
+}
+
+static int
+ptp_ocp_null_adjfine(struct ptp_clock_info *ptp_info, long scaled_ppm)
+{
+ if (scaled_ppm == 0)
+ return 0;
+
+ return -EOPNOTSUPP;
+}
+
+static int
+ptp_ocp_null_adjphase(struct ptp_clock_info *ptp_info, s32 phase_ns)
+{
+ return -EOPNOTSUPP;
+}
+
+static int
+ptp_ocp_enable(struct ptp_clock_info *ptp_info, struct ptp_clock_request *rq,
+ int on)
+{
+ struct ptp_ocp *bp = container_of(ptp_info, struct ptp_ocp, ptp_info);
+ struct ptp_ocp_ext_src *ext = NULL;
+ u32 req;
+ int err;
+
+ switch (rq->type) {
+ case PTP_CLK_REQ_EXTTS:
+ req = OCP_REQ_TIMESTAMP;
+ switch (rq->extts.index) {
+ case 0:
+ ext = bp->ts0;
+ break;
+ case 1:
+ ext = bp->ts1;
+ break;
+ case 2:
+ ext = bp->ts2;
+ break;
+ case 3:
+ ext = bp->ts3;
+ break;
+ case 4:
+ ext = bp->ts4;
+ break;
+ case 5:
+ ext = bp->pps;
+ break;
+ }
+ break;
+ case PTP_CLK_REQ_PPS:
+ req = OCP_REQ_PPS;
+ ext = bp->pps;
+ break;
+ case PTP_CLK_REQ_PEROUT:
+ switch (rq->perout.index) {
+ case 0:
+ /* This is a request for 1PPS on an output SMA.
+ * Allow, but assume manual configuration.
+ */
+ if (on && (rq->perout.period.sec != 1 ||
+ rq->perout.period.nsec != 0))
+ return -EINVAL;
+ return 0;
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ req = rq->perout.index - 1;
+ ext = bp->signal_out[req];
+ err = ptp_ocp_signal_from_perout(bp, req, &rq->perout);
+ if (err)
+ return err;
+ break;
+ }
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = -ENXIO;
+ if (ext)
+ err = ext->info->enable(ext, req, on);
+
+ return err;
+}
+
+static int
+ptp_ocp_verify(struct ptp_clock_info *ptp_info, unsigned pin,
+ enum ptp_pin_function func, unsigned chan)
+{
+ struct ptp_ocp *bp = container_of(ptp_info, struct ptp_ocp, ptp_info);
+ char buf[16];
+
+ switch (func) {
+ case PTP_PF_NONE:
+ snprintf(buf, sizeof(buf), "IN: None");
+ break;
+ case PTP_PF_EXTTS:
+ /* Allow timestamps, but require sysfs configuration. */
+ return 0;
+ case PTP_PF_PEROUT:
+ /* channel 0 is 1PPS from PHC.
+ * channels 1..4 are the frequency generators.
+ */
+ if (chan)
+ snprintf(buf, sizeof(buf), "OUT: GEN%d", chan);
+ else
+ snprintf(buf, sizeof(buf), "OUT: PHC");
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return ptp_ocp_sma_store(bp, buf, pin + 1);
+}
+
+static const struct ptp_clock_info ptp_ocp_clock_info = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .max_adj = 100000000,
+ .gettimex64 = ptp_ocp_gettimex,
+ .settime64 = ptp_ocp_settime,
+ .adjtime = ptp_ocp_adjtime,
+ .adjfine = ptp_ocp_null_adjfine,
+ .adjphase = ptp_ocp_null_adjphase,
+ .enable = ptp_ocp_enable,
+ .verify = ptp_ocp_verify,
+ .pps = true,
+ .n_ext_ts = 6,
+ .n_per_out = 5,
+};
+
+static void
+__ptp_ocp_clear_drift_locked(struct ptp_ocp *bp)
+{
+ u32 ctrl, select;
+
+ select = ioread32(&bp->reg->select);
+ iowrite32(OCP_SELECT_CLK_REG, &bp->reg->select);
+
+ iowrite32(0, &bp->reg->drift_ns);
+
+ ctrl = OCP_CTRL_ADJUST_DRIFT | OCP_CTRL_ENABLE;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ /* restore clock selection */
+ iowrite32(select >> 16, &bp->reg->select);
+}
+
+static void
+ptp_ocp_utc_distribute(struct ptp_ocp *bp, u32 val)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ bp->utc_tai_offset = val;
+
+ if (bp->irig_out)
+ iowrite32(val, &bp->irig_out->adj_sec);
+ if (bp->dcf_out)
+ iowrite32(val, &bp->dcf_out->adj_sec);
+ if (bp->nmea_out)
+ iowrite32(val, &bp->nmea_out->adj_sec);
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+}
+
+static void
+ptp_ocp_watchdog(struct timer_list *t)
+{
+ struct ptp_ocp *bp = from_timer(bp, t, watchdog);
+ unsigned long flags;
+ u32 status, utc_offset;
+
+ status = ioread32(&bp->pps_to_clk->status);
+
+ if (status & PPS_STATUS_SUPERV_ERR) {
+ iowrite32(status, &bp->pps_to_clk->status);
+ if (!bp->gnss_lost) {
+ spin_lock_irqsave(&bp->lock, flags);
+ __ptp_ocp_clear_drift_locked(bp);
+ spin_unlock_irqrestore(&bp->lock, flags);
+ bp->gnss_lost = ktime_get_real_seconds();
+ }
+
+ } else if (bp->gnss_lost) {
+ bp->gnss_lost = 0;
+ }
+
+ /* if GNSS provides correct data we can rely on
+ * it to get leap second information
+ */
+ if (bp->tod) {
+ status = ioread32(&bp->tod->utc_status);
+ utc_offset = status & TOD_STATUS_UTC_MASK;
+ if (status & TOD_STATUS_UTC_VALID &&
+ utc_offset != bp->utc_tai_offset)
+ ptp_ocp_utc_distribute(bp, utc_offset);
+ }
+
+ mod_timer(&bp->watchdog, jiffies + HZ);
+}
+
+static void
+ptp_ocp_estimate_pci_timing(struct ptp_ocp *bp)
+{
+ ktime_t start, end;
+ ktime_t delay;
+ u32 ctrl;
+
+ ctrl = ioread32(&bp->reg->ctrl);
+ ctrl = OCP_CTRL_READ_TIME_REQ | OCP_CTRL_ENABLE;
+
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ start = ktime_get_ns();
+
+ ctrl = ioread32(&bp->reg->ctrl);
+
+ end = ktime_get_ns();
+
+ delay = end - start;
+ bp->ts_window_adjust = (delay >> 5) * 3;
+}
+
+static int
+ptp_ocp_init_clock(struct ptp_ocp *bp)
+{
+ struct timespec64 ts;
+ bool sync;
+ u32 ctrl;
+
+ ctrl = OCP_CTRL_ENABLE;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ /* NO DRIFT Correction */
+ /* offset_p:i 1/8, offset_i: 1/16, drift_p: 0, drift_i: 0 */
+ iowrite32(0x2000, &bp->reg->servo_offset_p);
+ iowrite32(0x1000, &bp->reg->servo_offset_i);
+ iowrite32(0, &bp->reg->servo_drift_p);
+ iowrite32(0, &bp->reg->servo_drift_i);
+
+ /* latch servo values */
+ ctrl |= OCP_CTRL_ADJUST_SERVO;
+ iowrite32(ctrl, &bp->reg->ctrl);
+
+ if ((ioread32(&bp->reg->ctrl) & OCP_CTRL_ENABLE) == 0) {
+ dev_err(&bp->pdev->dev, "clock not enabled\n");
+ return -ENODEV;
+ }
+
+ ptp_ocp_estimate_pci_timing(bp);
+
+ sync = ioread32(&bp->reg->status) & OCP_STATUS_IN_SYNC;
+ if (!sync) {
+ ktime_get_clocktai_ts64(&ts);
+ ptp_ocp_settime(&bp->ptp_info, &ts);
+ }
+
+ /* If there is a clock supervisor, then enable the watchdog */
+ if (bp->pps_to_clk) {
+ timer_setup(&bp->watchdog, ptp_ocp_watchdog, 0);
+ mod_timer(&bp->watchdog, jiffies + HZ);
+ }
+
+ return 0;
+}
+
+static void
+ptp_ocp_tod_init(struct ptp_ocp *bp)
+{
+ u32 ctrl, reg;
+
+ ctrl = ioread32(&bp->tod->ctrl);
+ ctrl |= TOD_CTRL_PROTOCOL | TOD_CTRL_ENABLE;
+ ctrl &= ~(TOD_CTRL_DISABLE_FMT_A | TOD_CTRL_DISABLE_FMT_B);
+ iowrite32(ctrl, &bp->tod->ctrl);
+
+ reg = ioread32(&bp->tod->utc_status);
+ if (reg & TOD_STATUS_UTC_VALID)
+ ptp_ocp_utc_distribute(bp, reg & TOD_STATUS_UTC_MASK);
+}
+
+static const char *
+ptp_ocp_tod_proto_name(const int idx)
+{
+ static const char * const proto_name[] = {
+ "NMEA", "NMEA_ZDA", "NMEA_RMC", "NMEA_none",
+ "UBX", "UBX_UTC", "UBX_LS", "UBX_none"
+ };
+ return proto_name[idx];
+}
+
+static const char *
+ptp_ocp_tod_gnss_name(int idx)
+{
+ static const char * const gnss_name[] = {
+ "ALL", "COMBINED", "GPS", "GLONASS", "GALILEO", "BEIDOU",
+ "Unknown"
+ };
+ if (idx >= ARRAY_SIZE(gnss_name))
+ idx = ARRAY_SIZE(gnss_name) - 1;
+ return gnss_name[idx];
+}
+
+struct ptp_ocp_nvmem_match_info {
+ struct ptp_ocp *bp;
+ const void * const tag;
+};
+
+static int
+ptp_ocp_nvmem_match(struct device *dev, const void *data)
+{
+ const struct ptp_ocp_nvmem_match_info *info = data;
+
+ dev = dev->parent;
+ if (!i2c_verify_client(dev) || info->tag != dev->platform_data)
+ return 0;
+
+ while ((dev = dev->parent))
+ if (dev->driver && !strcmp(dev->driver->name, KBUILD_MODNAME))
+ return info->bp == dev_get_drvdata(dev);
+ return 0;
+}
+
+static inline struct nvmem_device *
+ptp_ocp_nvmem_device_get(struct ptp_ocp *bp, const void * const tag)
+{
+ struct ptp_ocp_nvmem_match_info info = { .bp = bp, .tag = tag };
+
+ return nvmem_device_find(&info, ptp_ocp_nvmem_match);
+}
+
+static inline void
+ptp_ocp_nvmem_device_put(struct nvmem_device **nvmemp)
+{
+ if (!IS_ERR_OR_NULL(*nvmemp))
+ nvmem_device_put(*nvmemp);
+ *nvmemp = NULL;
+}
+
+static void
+ptp_ocp_read_eeprom(struct ptp_ocp *bp)
+{
+ const struct ptp_ocp_eeprom_map *map;
+ struct nvmem_device *nvmem;
+ const void *tag;
+ int ret;
+
+ if (!bp->i2c_ctrl)
+ return;
+
+ tag = NULL;
+ nvmem = NULL;
+
+ for (map = bp->eeprom_map; map->len; map++) {
+ if (map->tag != tag) {
+ tag = map->tag;
+ ptp_ocp_nvmem_device_put(&nvmem);
+ }
+ if (!nvmem) {
+ nvmem = ptp_ocp_nvmem_device_get(bp, tag);
+ if (IS_ERR(nvmem)) {
+ ret = PTR_ERR(nvmem);
+ goto fail;
+ }
+ }
+ ret = nvmem_device_read(nvmem, map->off, map->len,
+ BP_MAP_ENTRY_ADDR(bp, map));
+ if (ret != map->len)
+ goto fail;
+ }
+
+ bp->has_eeprom_data = true;
+
+out:
+ ptp_ocp_nvmem_device_put(&nvmem);
+ return;
+
+fail:
+ dev_err(&bp->pdev->dev, "could not read eeprom: %d\n", ret);
+ goto out;
+}
+
+static struct device *
+ptp_ocp_find_flash(struct ptp_ocp *bp)
+{
+ struct device *dev, *last;
+
+ last = NULL;
+ dev = &bp->spi_flash->dev;
+
+ while ((dev = device_find_any_child(dev))) {
+ if (!strcmp("mtd", dev_bus_name(dev)))
+ break;
+ put_device(last);
+ last = dev;
+ }
+ put_device(last);
+
+ return dev;
+}
+
+static int
+ptp_ocp_devlink_fw_image(struct devlink *devlink, const struct firmware *fw,
+ const u8 **data, size_t *size)
+{
+ struct ptp_ocp *bp = devlink_priv(devlink);
+ const struct ptp_ocp_firmware_header *hdr;
+ size_t offset, length;
+ u16 crc;
+
+ hdr = (const struct ptp_ocp_firmware_header *)fw->data;
+ if (memcmp(hdr->magic, OCP_FIRMWARE_MAGIC_HEADER, 4)) {
+ devlink_flash_update_status_notify(devlink,
+ "No firmware header found, flashing raw image",
+ NULL, 0, 0);
+ offset = 0;
+ length = fw->size;
+ goto out;
+ }
+
+ if (be16_to_cpu(hdr->pci_vendor_id) != bp->pdev->vendor ||
+ be16_to_cpu(hdr->pci_device_id) != bp->pdev->device) {
+ devlink_flash_update_status_notify(devlink,
+ "Firmware image compatibility check failed",
+ NULL, 0, 0);
+ return -EINVAL;
+ }
+
+ offset = sizeof(*hdr);
+ length = be32_to_cpu(hdr->image_size);
+ if (length != (fw->size - offset)) {
+ devlink_flash_update_status_notify(devlink,
+ "Firmware image size check failed",
+ NULL, 0, 0);
+ return -EINVAL;
+ }
+
+ crc = crc16(0xffff, &fw->data[offset], length);
+ if (be16_to_cpu(hdr->crc) != crc) {
+ devlink_flash_update_status_notify(devlink,
+ "Firmware image CRC check failed",
+ NULL, 0, 0);
+ return -EINVAL;
+ }
+
+out:
+ *data = &fw->data[offset];
+ *size = length;
+
+ return 0;
+}
+
+static int
+ptp_ocp_devlink_flash(struct devlink *devlink, struct device *dev,
+ const struct firmware *fw)
+{
+ struct mtd_info *mtd = dev_get_drvdata(dev);
+ struct ptp_ocp *bp = devlink_priv(devlink);
+ size_t off, len, size, resid, wrote;
+ struct erase_info erase;
+ size_t base, blksz;
+ const u8 *data;
+ int err;
+
+ err = ptp_ocp_devlink_fw_image(devlink, fw, &data, &size);
+ if (err)
+ goto out;
+
+ off = 0;
+ base = bp->flash_start;
+ blksz = 4096;
+ resid = size;
+
+ while (resid) {
+ devlink_flash_update_status_notify(devlink, "Flashing",
+ NULL, off, size);
+
+ len = min_t(size_t, resid, blksz);
+ erase.addr = base + off;
+ erase.len = blksz;
+
+ err = mtd_erase(mtd, &erase);
+ if (err)
+ goto out;
+
+ err = mtd_write(mtd, base + off, len, &wrote, data + off);
+ if (err)
+ goto out;
+
+ off += blksz;
+ resid -= len;
+ }
+out:
+ return err;
+}
+
+static int
+ptp_ocp_devlink_flash_update(struct devlink *devlink,
+ struct devlink_flash_update_params *params,
+ struct netlink_ext_ack *extack)
+{
+ struct ptp_ocp *bp = devlink_priv(devlink);
+ struct device *dev;
+ const char *msg;
+ int err;
+
+ dev = ptp_ocp_find_flash(bp);
+ if (!dev) {
+ dev_err(&bp->pdev->dev, "Can't find Flash SPI adapter\n");
+ return -ENODEV;
+ }
+
+ devlink_flash_update_status_notify(devlink, "Preparing to flash",
+ NULL, 0, 0);
+
+ err = ptp_ocp_devlink_flash(devlink, dev, params->fw);
+
+ msg = err ? "Flash error" : "Flash complete";
+ devlink_flash_update_status_notify(devlink, msg, NULL, 0, 0);
+
+ put_device(dev);
+ return err;
+}
+
+static int
+ptp_ocp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
+ struct netlink_ext_ack *extack)
+{
+ struct ptp_ocp *bp = devlink_priv(devlink);
+ const char *fw_image;
+ char buf[32];
+ int err;
+
+ err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
+ if (err)
+ return err;
+
+ fw_image = bp->fw_loader ? "loader" : "fw";
+ sprintf(buf, "%d.%d", bp->fw_tag, bp->fw_version);
+ err = devlink_info_version_running_put(req, fw_image, buf);
+ if (err)
+ return err;
+
+ if (!bp->has_eeprom_data) {
+ ptp_ocp_read_eeprom(bp);
+ if (!bp->has_eeprom_data)
+ return 0;
+ }
+
+ sprintf(buf, "%pM", bp->serial);
+ err = devlink_info_serial_number_put(req, buf);
+ if (err)
+ return err;
+
+ err = devlink_info_version_fixed_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_BOARD_ID,
+ bp->board_id);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static const struct devlink_ops ptp_ocp_devlink_ops = {
+ .flash_update = ptp_ocp_devlink_flash_update,
+ .info_get = ptp_ocp_devlink_info_get,
+};
+
+static void __iomem *
+__ptp_ocp_get_mem(struct ptp_ocp *bp, resource_size_t start, int size)
+{
+ struct resource res = DEFINE_RES_MEM_NAMED(start, size, "ptp_ocp");
+
+ return devm_ioremap_resource(&bp->pdev->dev, &res);
+}
+
+static void __iomem *
+ptp_ocp_get_mem(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ resource_size_t start;
+
+ start = pci_resource_start(bp->pdev, 0) + r->offset;
+ return __ptp_ocp_get_mem(bp, start, r->size);
+}
+
+static void
+ptp_ocp_set_irq_resource(struct resource *res, int irq)
+{
+ struct resource r = DEFINE_RES_IRQ(irq);
+ *res = r;
+}
+
+static void
+ptp_ocp_set_mem_resource(struct resource *res, resource_size_t start, int size)
+{
+ struct resource r = DEFINE_RES_MEM(start, size);
+ *res = r;
+}
+
+static int
+ptp_ocp_register_spi(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ struct ptp_ocp_flash_info *info;
+ struct pci_dev *pdev = bp->pdev;
+ struct platform_device *p;
+ struct resource res[2];
+ resource_size_t start;
+ int id;
+
+ start = pci_resource_start(pdev, 0) + r->offset;
+ ptp_ocp_set_mem_resource(&res[0], start, r->size);
+ ptp_ocp_set_irq_resource(&res[1], pci_irq_vector(pdev, r->irq_vec));
+
+ info = r->extra;
+ id = pci_dev_id(pdev) << 1;
+ id += info->pci_offset;
+
+ p = platform_device_register_resndata(&pdev->dev, info->name, id,
+ res, 2, info->data,
+ info->data_size);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
+ bp_assign_entry(bp, r, p);
+
+ return 0;
+}
+
+static struct platform_device *
+ptp_ocp_i2c_bus(struct pci_dev *pdev, struct ocp_resource *r, int id)
+{
+ struct ptp_ocp_i2c_info *info;
+ struct resource res[2];
+ resource_size_t start;
+
+ info = r->extra;
+ start = pci_resource_start(pdev, 0) + r->offset;
+ ptp_ocp_set_mem_resource(&res[0], start, r->size);
+ ptp_ocp_set_irq_resource(&res[1], pci_irq_vector(pdev, r->irq_vec));
+
+ return platform_device_register_resndata(&pdev->dev, info->name,
+ id, res, 2,
+ info->data, info->data_size);
+}
+
+static int
+ptp_ocp_register_i2c(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ struct pci_dev *pdev = bp->pdev;
+ struct ptp_ocp_i2c_info *info;
+ struct platform_device *p;
+ struct clk_hw *clk;
+ char buf[32];
+ int id;
+
+ info = r->extra;
+ id = pci_dev_id(bp->pdev);
+
+ sprintf(buf, "AXI.%d", id);
+ clk = clk_hw_register_fixed_rate(&pdev->dev, buf, NULL, 0,
+ info->fixed_rate);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+ bp->i2c_clk = clk;
+
+ sprintf(buf, "%s.%d", info->name, id);
+ devm_clk_hw_register_clkdev(&pdev->dev, clk, NULL, buf);
+ p = ptp_ocp_i2c_bus(bp->pdev, r, id);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
+ bp_assign_entry(bp, r, p);
+
+ return 0;
+}
+
+/* The expectation is that this is triggered only on error. */
+static irqreturn_t
+ptp_ocp_signal_irq(int irq, void *priv)
+{
+ struct ptp_ocp_ext_src *ext = priv;
+ struct signal_reg __iomem *reg = ext->mem;
+ struct ptp_ocp *bp = ext->bp;
+ u32 enable, status;
+ int gen;
+
+ gen = ext->info->index - 1;
+
+ enable = ioread32(&reg->enable);
+ status = ioread32(&reg->status);
+
+ /* disable generator on error */
+ if (status || !enable) {
+ iowrite32(0, &reg->intr_mask);
+ iowrite32(0, &reg->enable);
+ bp->signal[gen].running = false;
+ }
+
+ iowrite32(0, &reg->intr); /* ack interrupt */
+
+ return IRQ_HANDLED;
+}
+
+static int
+ptp_ocp_signal_set(struct ptp_ocp *bp, int gen, struct ptp_ocp_signal *s)
+{
+ struct ptp_system_timestamp sts;
+ struct timespec64 ts;
+ ktime_t start_ns;
+ int err;
+
+ if (!s->period)
+ return 0;
+
+ if (!s->pulse)
+ s->pulse = ktime_divns(s->period * s->duty, 100);
+
+ err = ptp_ocp_gettimex(&bp->ptp_info, &ts, &sts);
+ if (err)
+ return err;
+
+ start_ns = ktime_set(ts.tv_sec, ts.tv_nsec) + NSEC_PER_MSEC;
+ if (!s->start) {
+ /* roundup() does not work on 32-bit systems */
+ s->start = DIV64_U64_ROUND_UP(start_ns, s->period);
+ s->start = ktime_add(s->start, s->phase);
+ }
+
+ if (s->duty < 1 || s->duty > 99)
+ return -EINVAL;
+
+ if (s->pulse < 1 || s->pulse > s->period)
+ return -EINVAL;
+
+ if (s->start < start_ns)
+ return -EINVAL;
+
+ bp->signal[gen] = *s;
+
+ return 0;
+}
+
+static int
+ptp_ocp_signal_from_perout(struct ptp_ocp *bp, int gen,
+ struct ptp_perout_request *req)
+{
+ struct ptp_ocp_signal s = { };
+
+ s.polarity = bp->signal[gen].polarity;
+ s.period = ktime_set(req->period.sec, req->period.nsec);
+ if (!s.period)
+ return 0;
+
+ if (req->flags & PTP_PEROUT_DUTY_CYCLE) {
+ s.pulse = ktime_set(req->on.sec, req->on.nsec);
+ s.duty = ktime_divns(s.pulse * 100, s.period);
+ }
+
+ if (req->flags & PTP_PEROUT_PHASE)
+ s.phase = ktime_set(req->phase.sec, req->phase.nsec);
+ else
+ s.start = ktime_set(req->start.sec, req->start.nsec);
+
+ return ptp_ocp_signal_set(bp, gen, &s);
+}
+
+static int
+ptp_ocp_signal_enable(void *priv, u32 req, bool enable)
+{
+ struct ptp_ocp_ext_src *ext = priv;
+ struct signal_reg __iomem *reg = ext->mem;
+ struct ptp_ocp *bp = ext->bp;
+ struct timespec64 ts;
+ int gen;
+
+ gen = ext->info->index - 1;
+
+ iowrite32(0, &reg->intr_mask);
+ iowrite32(0, &reg->enable);
+ bp->signal[gen].running = false;
+ if (!enable)
+ return 0;
+
+ ts = ktime_to_timespec64(bp->signal[gen].start);
+ iowrite32(ts.tv_sec, &reg->start_sec);
+ iowrite32(ts.tv_nsec, &reg->start_ns);
+
+ ts = ktime_to_timespec64(bp->signal[gen].period);
+ iowrite32(ts.tv_sec, &reg->period_sec);
+ iowrite32(ts.tv_nsec, &reg->period_ns);
+
+ ts = ktime_to_timespec64(bp->signal[gen].pulse);
+ iowrite32(ts.tv_sec, &reg->pulse_sec);
+ iowrite32(ts.tv_nsec, &reg->pulse_ns);
+
+ iowrite32(bp->signal[gen].polarity, &reg->polarity);
+ iowrite32(0, &reg->repeat_count);
+
+ iowrite32(0, &reg->intr); /* clear interrupt state */
+ iowrite32(1, &reg->intr_mask); /* enable interrupt */
+ iowrite32(3, &reg->enable); /* valid & enable */
+
+ bp->signal[gen].running = true;
+
+ return 0;
+}
+
+static irqreturn_t
+ptp_ocp_ts_irq(int irq, void *priv)
+{
+ struct ptp_ocp_ext_src *ext = priv;
+ struct ts_reg __iomem *reg = ext->mem;
+ struct ptp_clock_event ev;
+ u32 sec, nsec;
+
+ if (ext == ext->bp->pps) {
+ if (ext->bp->pps_req_map & OCP_REQ_PPS) {
+ ev.type = PTP_CLOCK_PPS;
+ ptp_clock_event(ext->bp->ptp, &ev);
+ }
+
+ if ((ext->bp->pps_req_map & ~OCP_REQ_PPS) == 0)
+ goto out;
+ }
+
+ /* XXX should fix API - this converts s/ns -> ts -> s/ns */
+ sec = ioread32(&reg->time_sec);
+ nsec = ioread32(&reg->time_ns);
+
+ ev.type = PTP_CLOCK_EXTTS;
+ ev.index = ext->info->index;
+ ev.timestamp = sec * NSEC_PER_SEC + nsec;
+
+ ptp_clock_event(ext->bp->ptp, &ev);
+
+out:
+ iowrite32(1, &reg->intr); /* write 1 to ack */
+
+ return IRQ_HANDLED;
+}
+
+static int
+ptp_ocp_ts_enable(void *priv, u32 req, bool enable)
+{
+ struct ptp_ocp_ext_src *ext = priv;
+ struct ts_reg __iomem *reg = ext->mem;
+ struct ptp_ocp *bp = ext->bp;
+
+ if (ext == bp->pps) {
+ u32 old_map = bp->pps_req_map;
+
+ if (enable)
+ bp->pps_req_map |= req;
+ else
+ bp->pps_req_map &= ~req;
+
+ /* if no state change, just return */
+ if ((!!old_map ^ !!bp->pps_req_map) == 0)
+ return 0;
+ }
+
+ if (enable) {
+ iowrite32(1, &reg->enable);
+ iowrite32(1, &reg->intr_mask);
+ iowrite32(1, &reg->intr);
+ } else {
+ iowrite32(0, &reg->intr_mask);
+ iowrite32(0, &reg->enable);
+ }
+
+ return 0;
+}
+
+static void
+ptp_ocp_unregister_ext(struct ptp_ocp_ext_src *ext)
+{
+ ext->info->enable(ext, ~0, false);
+ pci_free_irq(ext->bp->pdev, ext->irq_vec, ext);
+ kfree(ext);
+}
+
+static int
+ptp_ocp_register_ext(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ struct pci_dev *pdev = bp->pdev;
+ struct ptp_ocp_ext_src *ext;
+ int err;
+
+ ext = kzalloc(sizeof(*ext), GFP_KERNEL);
+ if (!ext)
+ return -ENOMEM;
+
+ ext->mem = ptp_ocp_get_mem(bp, r);
+ if (IS_ERR(ext->mem)) {
+ err = PTR_ERR(ext->mem);
+ goto out;
+ }
+
+ ext->bp = bp;
+ ext->info = r->extra;
+ ext->irq_vec = r->irq_vec;
+
+ err = pci_request_irq(pdev, r->irq_vec, ext->info->irq_fcn, NULL,
+ ext, "ocp%d.%s", bp->id, r->name);
+ if (err) {
+ dev_err(&pdev->dev, "Could not get irq %d\n", r->irq_vec);
+ goto out;
+ }
+
+ bp_assign_entry(bp, r, ext);
+
+ return 0;
+
+out:
+ kfree(ext);
+ return err;
+}
+
+static int
+ptp_ocp_serial_line(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ struct pci_dev *pdev = bp->pdev;
+ struct uart_8250_port uart;
+
+ /* Setting UPF_IOREMAP and leaving port.membase unspecified lets
+ * the serial port device claim and release the pci resource.
+ */
+ memset(&uart, 0, sizeof(uart));
+ uart.port.dev = &pdev->dev;
+ uart.port.iotype = UPIO_MEM;
+ uart.port.regshift = 2;
+ uart.port.mapbase = pci_resource_start(pdev, 0) + r->offset;
+ uart.port.irq = pci_irq_vector(pdev, r->irq_vec);
+ uart.port.uartclk = 50000000;
+ uart.port.flags = UPF_FIXED_TYPE | UPF_IOREMAP | UPF_NO_THRE_TEST;
+ uart.port.type = PORT_16550A;
+
+ return serial8250_register_8250_port(&uart);
+}
+
+static int
+ptp_ocp_register_serial(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ int port;
+
+ port = ptp_ocp_serial_line(bp, r);
+ if (port < 0)
+ return port;
+
+ bp_assign_entry(bp, r, port);
+
+ return 0;
+}
+
+static int
+ptp_ocp_register_mem(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ void __iomem *mem;
+
+ mem = ptp_ocp_get_mem(bp, r);
+ if (IS_ERR(mem))
+ return PTR_ERR(mem);
+
+ bp_assign_entry(bp, r, mem);
+
+ return 0;
+}
+
+static void
+ptp_ocp_nmea_out_init(struct ptp_ocp *bp)
+{
+ if (!bp->nmea_out)
+ return;
+
+ iowrite32(0, &bp->nmea_out->ctrl); /* disable */
+ iowrite32(7, &bp->nmea_out->uart_baud); /* 115200 */
+ iowrite32(1, &bp->nmea_out->ctrl); /* enable */
+}
+
+static void
+_ptp_ocp_signal_init(struct ptp_ocp_signal *s, struct signal_reg __iomem *reg)
+{
+ u32 val;
+
+ iowrite32(0, &reg->enable); /* disable */
+
+ val = ioread32(&reg->polarity);
+ s->polarity = val ? true : false;
+ s->duty = 50;
+}
+
+static void
+ptp_ocp_signal_init(struct ptp_ocp *bp)
+{
+ int i;
+
+ for (i = 0; i < 4; i++)
+ if (bp->signal_out[i])
+ _ptp_ocp_signal_init(&bp->signal[i],
+ bp->signal_out[i]->mem);
+}
+
+static void
+ptp_ocp_attr_group_del(struct ptp_ocp *bp)
+{
+ sysfs_remove_groups(&bp->dev.kobj, bp->attr_group);
+ kfree(bp->attr_group);
+}
+
+static int
+ptp_ocp_attr_group_add(struct ptp_ocp *bp,
+ const struct ocp_attr_group *attr_tbl)
+{
+ int count, i;
+ int err;
+
+ count = 0;
+ for (i = 0; attr_tbl[i].cap; i++)
+ if (attr_tbl[i].cap & bp->fw_cap)
+ count++;
+
+ bp->attr_group = kcalloc(count + 1, sizeof(struct attribute_group *),
+ GFP_KERNEL);
+ if (!bp->attr_group)
+ return -ENOMEM;
+
+ count = 0;
+ for (i = 0; attr_tbl[i].cap; i++)
+ if (attr_tbl[i].cap & bp->fw_cap)
+ bp->attr_group[count++] = attr_tbl[i].group;
+
+ err = sysfs_create_groups(&bp->dev.kobj, bp->attr_group);
+ if (err)
+ bp->attr_group[0] = NULL;
+
+ return err;
+}
+
+static void
+ptp_ocp_enable_fpga(u32 __iomem *reg, u32 bit, bool enable)
+{
+ u32 ctrl;
+ bool on;
+
+ ctrl = ioread32(reg);
+ on = ctrl & bit;
+ if (on ^ enable) {
+ ctrl &= ~bit;
+ ctrl |= enable ? bit : 0;
+ iowrite32(ctrl, reg);
+ }
+}
+
+static void
+ptp_ocp_irig_out(struct ptp_ocp *bp, bool enable)
+{
+ return ptp_ocp_enable_fpga(&bp->irig_out->ctrl,
+ IRIG_M_CTRL_ENABLE, enable);
+}
+
+static void
+ptp_ocp_irig_in(struct ptp_ocp *bp, bool enable)
+{
+ return ptp_ocp_enable_fpga(&bp->irig_in->ctrl,
+ IRIG_S_CTRL_ENABLE, enable);
+}
+
+static void
+ptp_ocp_dcf_out(struct ptp_ocp *bp, bool enable)
+{
+ return ptp_ocp_enable_fpga(&bp->dcf_out->ctrl,
+ DCF_M_CTRL_ENABLE, enable);
+}
+
+static void
+ptp_ocp_dcf_in(struct ptp_ocp *bp, bool enable)
+{
+ return ptp_ocp_enable_fpga(&bp->dcf_in->ctrl,
+ DCF_S_CTRL_ENABLE, enable);
+}
+
+static void
+__handle_signal_outputs(struct ptp_ocp *bp, u32 val)
+{
+ ptp_ocp_irig_out(bp, val & 0x00100010);
+ ptp_ocp_dcf_out(bp, val & 0x00200020);
+}
+
+static void
+__handle_signal_inputs(struct ptp_ocp *bp, u32 val)
+{
+ ptp_ocp_irig_in(bp, val & 0x00100010);
+ ptp_ocp_dcf_in(bp, val & 0x00200020);
+}
+
+static u32
+ptp_ocp_sma_fb_get(struct ptp_ocp *bp, int sma_nr)
+{
+ u32 __iomem *gpio;
+ u32 shift;
+
+ if (bp->sma[sma_nr - 1].fixed_fcn)
+ return (sma_nr - 1) & 1;
+
+ if (bp->sma[sma_nr - 1].mode == SMA_MODE_IN)
+ gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
+ else
+ gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
+ shift = sma_nr & 1 ? 0 : 16;
+
+ return (ioread32(gpio) >> shift) & 0xffff;
+}
+
+static int
+ptp_ocp_sma_fb_set_output(struct ptp_ocp *bp, int sma_nr, u32 val)
+{
+ u32 reg, mask, shift;
+ unsigned long flags;
+ u32 __iomem *gpio;
+
+ gpio = sma_nr > 2 ? &bp->sma_map1->gpio2 : &bp->sma_map2->gpio2;
+ shift = sma_nr & 1 ? 0 : 16;
+
+ mask = 0xffff << (16 - shift);
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ reg = ioread32(gpio);
+ reg = (reg & mask) | (val << shift);
+
+ __handle_signal_outputs(bp, reg);
+
+ iowrite32(reg, gpio);
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return 0;
+}
+
+static int
+ptp_ocp_sma_fb_set_inputs(struct ptp_ocp *bp, int sma_nr, u32 val)
+{
+ u32 reg, mask, shift;
+ unsigned long flags;
+ u32 __iomem *gpio;
+
+ gpio = sma_nr > 2 ? &bp->sma_map2->gpio1 : &bp->sma_map1->gpio1;
+ shift = sma_nr & 1 ? 0 : 16;
+
+ mask = 0xffff << (16 - shift);
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ reg = ioread32(gpio);
+ reg = (reg & mask) | (val << shift);
+
+ __handle_signal_inputs(bp, reg);
+
+ iowrite32(reg, gpio);
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return 0;
+}
+
+static void
+ptp_ocp_sma_fb_init(struct ptp_ocp *bp)
+{
+ u32 reg;
+ int i;
+
+ /* defaults */
+ bp->sma[0].mode = SMA_MODE_IN;
+ bp->sma[1].mode = SMA_MODE_IN;
+ bp->sma[2].mode = SMA_MODE_OUT;
+ bp->sma[3].mode = SMA_MODE_OUT;
+ for (i = 0; i < 4; i++)
+ bp->sma[i].default_fcn = i & 1;
+
+ /* If no SMA1 map, the pin functions and directions are fixed. */
+ if (!bp->sma_map1) {
+ for (i = 0; i < 4; i++) {
+ bp->sma[i].fixed_fcn = true;
+ bp->sma[i].fixed_dir = true;
+ }
+ return;
+ }
+
+ /* If SMA2 GPIO output map is all 1, it is not present.
+ * This indicates the firmware has fixed direction SMA pins.
+ */
+ reg = ioread32(&bp->sma_map2->gpio2);
+ if (reg == 0xffffffff) {
+ for (i = 0; i < 4; i++)
+ bp->sma[i].fixed_dir = true;
+ } else {
+ reg = ioread32(&bp->sma_map1->gpio1);
+ bp->sma[0].mode = reg & BIT(15) ? SMA_MODE_IN : SMA_MODE_OUT;
+ bp->sma[1].mode = reg & BIT(31) ? SMA_MODE_IN : SMA_MODE_OUT;
+
+ reg = ioread32(&bp->sma_map1->gpio2);
+ bp->sma[2].mode = reg & BIT(15) ? SMA_MODE_OUT : SMA_MODE_IN;
+ bp->sma[3].mode = reg & BIT(31) ? SMA_MODE_OUT : SMA_MODE_IN;
+ }
+}
+
+static const struct ocp_sma_op ocp_fb_sma_op = {
+ .tbl = { ptp_ocp_sma_in, ptp_ocp_sma_out },
+ .init = ptp_ocp_sma_fb_init,
+ .get = ptp_ocp_sma_fb_get,
+ .set_inputs = ptp_ocp_sma_fb_set_inputs,
+ .set_output = ptp_ocp_sma_fb_set_output,
+};
+
+static int
+ptp_ocp_fb_set_pins(struct ptp_ocp *bp)
+{
+ struct ptp_pin_desc *config;
+ int i;
+
+ config = kcalloc(4, sizeof(*config), GFP_KERNEL);
+ if (!config)
+ return -ENOMEM;
+
+ for (i = 0; i < 4; i++) {
+ sprintf(config[i].name, "sma%d", i + 1);
+ config[i].index = i;
+ }
+
+ bp->ptp_info.n_pins = 4;
+ bp->ptp_info.pin_config = config;
+
+ return 0;
+}
+
+static void
+ptp_ocp_fb_set_version(struct ptp_ocp *bp)
+{
+ u64 cap = OCP_CAP_BASIC;
+ u32 version;
+
+ version = ioread32(&bp->image->version);
+
+ /* if lower 16 bits are empty, this is the fw loader. */
+ if ((version & 0xffff) == 0) {
+ version = version >> 16;
+ bp->fw_loader = true;
+ }
+
+ bp->fw_tag = version >> 15;
+ bp->fw_version = version & 0x7fff;
+
+ if (bp->fw_tag) {
+ /* FPGA firmware */
+ if (version >= 5)
+ cap |= OCP_CAP_SIGNAL | OCP_CAP_FREQ;
+ } else {
+ /* SOM firmware */
+ if (version >= 19)
+ cap |= OCP_CAP_SIGNAL;
+ if (version >= 20)
+ cap |= OCP_CAP_FREQ;
+ }
+
+ bp->fw_cap = cap;
+}
+
+/* FB specific board initializers; last "resource" registered. */
+static int
+ptp_ocp_fb_board_init(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ int err;
+
+ bp->flash_start = 1024 * 4096;
+ bp->eeprom_map = fb_eeprom_map;
+ bp->fw_version = ioread32(&bp->image->version);
+ bp->sma_op = &ocp_fb_sma_op;
+
+ ptp_ocp_fb_set_version(bp);
+
+ ptp_ocp_tod_init(bp);
+ ptp_ocp_nmea_out_init(bp);
+ ptp_ocp_sma_init(bp);
+ ptp_ocp_signal_init(bp);
+
+ err = ptp_ocp_attr_group_add(bp, fb_timecard_groups);
+ if (err)
+ return err;
+
+ err = ptp_ocp_fb_set_pins(bp);
+ if (err)
+ return err;
+
+ return ptp_ocp_init_clock(bp);
+}
+
+static bool
+ptp_ocp_allow_irq(struct ptp_ocp *bp, struct ocp_resource *r)
+{
+ bool allow = !r->irq_vec || r->irq_vec < bp->n_irqs;
+
+ if (!allow)
+ dev_err(&bp->pdev->dev, "irq %d out of range, skipping %s\n",
+ r->irq_vec, r->name);
+ return allow;
+}
+
+static int
+ptp_ocp_register_resources(struct ptp_ocp *bp, kernel_ulong_t driver_data)
+{
+ struct ocp_resource *r, *table;
+ int err = 0;
+
+ table = (struct ocp_resource *)driver_data;
+ for (r = table; r->setup; r++) {
+ if (!ptp_ocp_allow_irq(bp, r))
+ continue;
+ err = r->setup(bp, r);
+ if (err) {
+ dev_err(&bp->pdev->dev,
+ "Could not register %s: err %d\n",
+ r->name, err);
+ break;
+ }
+ }
+ return err;
+}
+
+static ssize_t
+ptp_ocp_show_output(const struct ocp_selector *tbl, u32 val, char *buf,
+ int def_val)
+{
+ const char *name;
+ ssize_t count;
+
+ count = sysfs_emit(buf, "OUT: ");
+ name = ptp_ocp_select_name_from_val(tbl, val);
+ if (!name)
+ name = ptp_ocp_select_name_from_val(tbl, def_val);
+ count += sysfs_emit_at(buf, count, "%s\n", name);
+ return count;
+}
+
+static ssize_t
+ptp_ocp_show_inputs(const struct ocp_selector *tbl, u32 val, char *buf,
+ int def_val)
+{
+ const char *name;
+ ssize_t count;
+ int i;
+
+ count = sysfs_emit(buf, "IN: ");
+ for (i = 0; tbl[i].name; i++) {
+ if (val & tbl[i].value) {
+ name = tbl[i].name;
+ count += sysfs_emit_at(buf, count, "%s ", name);
+ }
+ }
+ if (!val && def_val >= 0) {
+ name = ptp_ocp_select_name_from_val(tbl, def_val);
+ count += sysfs_emit_at(buf, count, "%s ", name);
+ }
+ if (count)
+ count--;
+ count += sysfs_emit_at(buf, count, "\n");
+ return count;
+}
+
+static int
+sma_parse_inputs(const struct ocp_selector * const tbl[], const char *buf,
+ enum ptp_ocp_sma_mode *mode)
+{
+ int idx, count, dir;
+ char **argv;
+ int ret;
+
+ argv = argv_split(GFP_KERNEL, buf, &count);
+ if (!argv)
+ return -ENOMEM;
+
+ ret = -EINVAL;
+ if (!count)
+ goto out;
+
+ idx = 0;
+ dir = *mode == SMA_MODE_IN ? 0 : 1;
+ if (!strcasecmp("IN:", argv[0])) {
+ dir = 0;
+ idx++;
+ }
+ if (!strcasecmp("OUT:", argv[0])) {
+ dir = 1;
+ idx++;
+ }
+ *mode = dir == 0 ? SMA_MODE_IN : SMA_MODE_OUT;
+
+ ret = 0;
+ for (; idx < count; idx++)
+ ret |= ptp_ocp_select_val_from_name(tbl[dir], argv[idx]);
+ if (ret < 0)
+ ret = -EINVAL;
+
+out:
+ argv_free(argv);
+ return ret;
+}
+
+static ssize_t
+ptp_ocp_sma_show(struct ptp_ocp *bp, int sma_nr, char *buf,
+ int default_in_val, int default_out_val)
+{
+ struct ptp_ocp_sma_connector *sma = &bp->sma[sma_nr - 1];
+ const struct ocp_selector * const *tbl;
+ u32 val;
+
+ tbl = bp->sma_op->tbl;
+ val = ptp_ocp_sma_get(bp, sma_nr) & SMA_SELECT_MASK;
+
+ if (sma->mode == SMA_MODE_IN) {
+ if (sma->disabled)
+ val = SMA_DISABLE;
+ return ptp_ocp_show_inputs(tbl[0], val, buf, default_in_val);
+ }
+
+ return ptp_ocp_show_output(tbl[1], val, buf, default_out_val);
+}
+
+static ssize_t
+sma1_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_sma_show(bp, 1, buf, 0, 1);
+}
+
+static ssize_t
+sma2_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_sma_show(bp, 2, buf, -1, 1);
+}
+
+static ssize_t
+sma3_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_sma_show(bp, 3, buf, -1, 0);
+}
+
+static ssize_t
+sma4_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_sma_show(bp, 4, buf, -1, 1);
+}
+
+static int
+ptp_ocp_sma_store(struct ptp_ocp *bp, const char *buf, int sma_nr)
+{
+ struct ptp_ocp_sma_connector *sma = &bp->sma[sma_nr - 1];
+ enum ptp_ocp_sma_mode mode;
+ int val;
+
+ mode = sma->mode;
+ val = sma_parse_inputs(bp->sma_op->tbl, buf, &mode);
+ if (val < 0)
+ return val;
+
+ if (sma->fixed_dir && (mode != sma->mode || val & SMA_DISABLE))
+ return -EOPNOTSUPP;
+
+ if (sma->fixed_fcn) {
+ if (val != sma->default_fcn)
+ return -EOPNOTSUPP;
+ return 0;
+ }
+
+ sma->disabled = !!(val & SMA_DISABLE);
+
+ if (mode != sma->mode) {
+ if (mode == SMA_MODE_IN)
+ ptp_ocp_sma_set_output(bp, sma_nr, 0);
+ else
+ ptp_ocp_sma_set_inputs(bp, sma_nr, 0);
+ sma->mode = mode;
+ }
+
+ if (!sma->fixed_dir)
+ val |= SMA_ENABLE; /* add enable bit */
+
+ if (sma->disabled)
+ val = 0;
+
+ if (mode == SMA_MODE_IN)
+ val = ptp_ocp_sma_set_inputs(bp, sma_nr, val);
+ else
+ val = ptp_ocp_sma_set_output(bp, sma_nr, val);
+
+ return val;
+}
+
+static ssize_t
+sma1_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+
+ err = ptp_ocp_sma_store(bp, buf, 1);
+ return err ? err : count;
+}
+
+static ssize_t
+sma2_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+
+ err = ptp_ocp_sma_store(bp, buf, 2);
+ return err ? err : count;
+}
+
+static ssize_t
+sma3_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+
+ err = ptp_ocp_sma_store(bp, buf, 3);
+ return err ? err : count;
+}
+
+static ssize_t
+sma4_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+
+ err = ptp_ocp_sma_store(bp, buf, 4);
+ return err ? err : count;
+}
+static DEVICE_ATTR_RW(sma1);
+static DEVICE_ATTR_RW(sma2);
+static DEVICE_ATTR_RW(sma3);
+static DEVICE_ATTR_RW(sma4);
+
+static ssize_t
+available_sma_inputs_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_select_table_show(bp->sma_op->tbl[0], buf);
+}
+static DEVICE_ATTR_RO(available_sma_inputs);
+
+static ssize_t
+available_sma_outputs_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return ptp_ocp_select_table_show(bp->sma_op->tbl[1], buf);
+}
+static DEVICE_ATTR_RO(available_sma_outputs);
+
+#define EXT_ATTR_RO(_group, _name, _val) \
+ struct dev_ext_attribute dev_attr_##_group##_val##_##_name = \
+ { __ATTR_RO(_name), (void *)_val }
+#define EXT_ATTR_RW(_group, _name, _val) \
+ struct dev_ext_attribute dev_attr_##_group##_val##_##_name = \
+ { __ATTR_RW(_name), (void *)_val }
+#define to_ext_attr(x) container_of(x, struct dev_ext_attribute, attr)
+
+/* period [duty [phase [polarity]]] */
+static ssize_t
+signal_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ struct ptp_ocp_signal s = { };
+ int gen = (uintptr_t)ea->var;
+ int argc, err;
+ char **argv;
+
+ argv = argv_split(GFP_KERNEL, buf, &argc);
+ if (!argv)
+ return -ENOMEM;
+
+ err = -EINVAL;
+ s.duty = bp->signal[gen].duty;
+ s.phase = bp->signal[gen].phase;
+ s.period = bp->signal[gen].period;
+ s.polarity = bp->signal[gen].polarity;
+
+ switch (argc) {
+ case 4:
+ argc--;
+ err = kstrtobool(argv[argc], &s.polarity);
+ if (err)
+ goto out;
+ fallthrough;
+ case 3:
+ argc--;
+ err = kstrtou64(argv[argc], 0, &s.phase);
+ if (err)
+ goto out;
+ fallthrough;
+ case 2:
+ argc--;
+ err = kstrtoint(argv[argc], 0, &s.duty);
+ if (err)
+ goto out;
+ fallthrough;
+ case 1:
+ argc--;
+ err = kstrtou64(argv[argc], 0, &s.period);
+ if (err)
+ goto out;
+ break;
+ default:
+ goto out;
+ }
+
+ err = ptp_ocp_signal_set(bp, gen, &s);
+ if (err)
+ goto out;
+
+ err = ptp_ocp_signal_enable(bp->signal_out[gen], gen, s.period != 0);
+
+out:
+ argv_free(argv);
+ return err ? err : count;
+}
+
+static ssize_t
+signal_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ struct ptp_ocp_signal *signal;
+ struct timespec64 ts;
+ ssize_t count;
+ int i;
+
+ i = (uintptr_t)ea->var;
+ signal = &bp->signal[i];
+
+ count = sysfs_emit(buf, "%llu %d %llu %d", signal->period,
+ signal->duty, signal->phase, signal->polarity);
+
+ ts = ktime_to_timespec64(signal->start);
+ count += sysfs_emit_at(buf, count, " %ptT TAI\n", &ts);
+
+ return count;
+}
+static EXT_ATTR_RW(signal, signal, 0);
+static EXT_ATTR_RW(signal, signal, 1);
+static EXT_ATTR_RW(signal, signal, 2);
+static EXT_ATTR_RW(signal, signal, 3);
+
+static ssize_t
+duty_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+
+ return sysfs_emit(buf, "%d\n", bp->signal[i].duty);
+}
+static EXT_ATTR_RO(signal, duty, 0);
+static EXT_ATTR_RO(signal, duty, 1);
+static EXT_ATTR_RO(signal, duty, 2);
+static EXT_ATTR_RO(signal, duty, 3);
+
+static ssize_t
+period_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+
+ return sysfs_emit(buf, "%llu\n", bp->signal[i].period);
+}
+static EXT_ATTR_RO(signal, period, 0);
+static EXT_ATTR_RO(signal, period, 1);
+static EXT_ATTR_RO(signal, period, 2);
+static EXT_ATTR_RO(signal, period, 3);
+
+static ssize_t
+phase_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+
+ return sysfs_emit(buf, "%llu\n", bp->signal[i].phase);
+}
+static EXT_ATTR_RO(signal, phase, 0);
+static EXT_ATTR_RO(signal, phase, 1);
+static EXT_ATTR_RO(signal, phase, 2);
+static EXT_ATTR_RO(signal, phase, 3);
+
+static ssize_t
+polarity_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+
+ return sysfs_emit(buf, "%d\n", bp->signal[i].polarity);
+}
+static EXT_ATTR_RO(signal, polarity, 0);
+static EXT_ATTR_RO(signal, polarity, 1);
+static EXT_ATTR_RO(signal, polarity, 2);
+static EXT_ATTR_RO(signal, polarity, 3);
+
+static ssize_t
+running_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+
+ return sysfs_emit(buf, "%d\n", bp->signal[i].running);
+}
+static EXT_ATTR_RO(signal, running, 0);
+static EXT_ATTR_RO(signal, running, 1);
+static EXT_ATTR_RO(signal, running, 2);
+static EXT_ATTR_RO(signal, running, 3);
+
+static ssize_t
+start_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int i = (uintptr_t)ea->var;
+ struct timespec64 ts;
+
+ ts = ktime_to_timespec64(bp->signal[i].start);
+ return sysfs_emit(buf, "%llu.%lu\n", ts.tv_sec, ts.tv_nsec);
+}
+static EXT_ATTR_RO(signal, start, 0);
+static EXT_ATTR_RO(signal, start, 1);
+static EXT_ATTR_RO(signal, start, 2);
+static EXT_ATTR_RO(signal, start, 3);
+
+static ssize_t
+seconds_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int idx = (uintptr_t)ea->var;
+ u32 val;
+ int err;
+
+ err = kstrtou32(buf, 0, &val);
+ if (err)
+ return err;
+ if (val > 0xff)
+ return -EINVAL;
+
+ if (val)
+ val = (val << 8) | 0x1;
+
+ iowrite32(val, &bp->freq_in[idx]->ctrl);
+
+ return count;
+}
+
+static ssize_t
+seconds_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int idx = (uintptr_t)ea->var;
+ u32 val;
+
+ val = ioread32(&bp->freq_in[idx]->ctrl);
+ if (val & 1)
+ val = (val >> 8) & 0xff;
+ else
+ val = 0;
+
+ return sysfs_emit(buf, "%u\n", val);
+}
+static EXT_ATTR_RW(freq, seconds, 0);
+static EXT_ATTR_RW(freq, seconds, 1);
+static EXT_ATTR_RW(freq, seconds, 2);
+static EXT_ATTR_RW(freq, seconds, 3);
+
+static ssize_t
+frequency_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *ea = to_ext_attr(attr);
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int idx = (uintptr_t)ea->var;
+ u32 val;
+
+ val = ioread32(&bp->freq_in[idx]->status);
+ if (val & FREQ_STATUS_ERROR)
+ return sysfs_emit(buf, "error\n");
+ if (val & FREQ_STATUS_OVERRUN)
+ return sysfs_emit(buf, "overrun\n");
+ if (val & FREQ_STATUS_VALID)
+ return sysfs_emit(buf, "%lu\n", val & FREQ_STATUS_MASK);
+ return 0;
+}
+static EXT_ATTR_RO(freq, frequency, 0);
+static EXT_ATTR_RO(freq, frequency, 1);
+static EXT_ATTR_RO(freq, frequency, 2);
+static EXT_ATTR_RO(freq, frequency, 3);
+
+static ssize_t
+serialnum_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ if (!bp->has_eeprom_data)
+ ptp_ocp_read_eeprom(bp);
+
+ return sysfs_emit(buf, "%pM\n", bp->serial);
+}
+static DEVICE_ATTR_RO(serialnum);
+
+static ssize_t
+gnss_sync_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ ssize_t ret;
+
+ if (bp->gnss_lost)
+ ret = sysfs_emit(buf, "LOST @ %ptT\n", &bp->gnss_lost);
+ else
+ ret = sysfs_emit(buf, "SYNC\n");
+
+ return ret;
+}
+static DEVICE_ATTR_RO(gnss_sync);
+
+static ssize_t
+utc_tai_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", bp->utc_tai_offset);
+}
+
+static ssize_t
+utc_tai_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+ u32 val;
+
+ err = kstrtou32(buf, 0, &val);
+ if (err)
+ return err;
+
+ ptp_ocp_utc_distribute(bp, val);
+
+ return count;
+}
+static DEVICE_ATTR_RW(utc_tai_offset);
+
+static ssize_t
+ts_window_adjust_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", bp->ts_window_adjust);
+}
+
+static ssize_t
+ts_window_adjust_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ int err;
+ u32 val;
+
+ err = kstrtou32(buf, 0, &val);
+ if (err)
+ return err;
+
+ bp->ts_window_adjust = val;
+
+ return count;
+}
+static DEVICE_ATTR_RW(ts_window_adjust);
+
+static ssize_t
+irig_b_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ u32 val;
+
+ val = ioread32(&bp->irig_out->ctrl);
+ val = (val >> 16) & 0x07;
+ return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t
+irig_b_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ unsigned long flags;
+ int err;
+ u32 reg;
+ u8 val;
+
+ err = kstrtou8(buf, 0, &val);
+ if (err)
+ return err;
+ if (val > 7)
+ return -EINVAL;
+
+ reg = ((val & 0x7) << 16);
+
+ spin_lock_irqsave(&bp->lock, flags);
+ iowrite32(0, &bp->irig_out->ctrl); /* disable */
+ iowrite32(reg, &bp->irig_out->ctrl); /* change mode */
+ iowrite32(reg | IRIG_M_CTRL_ENABLE, &bp->irig_out->ctrl);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return count;
+}
+static DEVICE_ATTR_RW(irig_b_mode);
+
+static ssize_t
+clock_source_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ const char *p;
+ u32 select;
+
+ select = ioread32(&bp->reg->select);
+ p = ptp_ocp_select_name_from_val(ptp_ocp_clock, select >> 16);
+
+ return sysfs_emit(buf, "%s\n", p);
+}
+
+static ssize_t
+clock_source_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ unsigned long flags;
+ int val;
+
+ val = ptp_ocp_select_val_from_name(ptp_ocp_clock, buf);
+ if (val < 0)
+ return val;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ iowrite32(val, &bp->reg->select);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return count;
+}
+static DEVICE_ATTR_RW(clock_source);
+
+static ssize_t
+available_clock_sources_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return ptp_ocp_select_table_show(ptp_ocp_clock, buf);
+}
+static DEVICE_ATTR_RO(available_clock_sources);
+
+static ssize_t
+clock_status_drift_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ u32 val;
+ int res;
+
+ val = ioread32(&bp->reg->status_drift);
+ res = (val & ~INT_MAX) ? -1 : 1;
+ res *= (val & INT_MAX);
+ return sysfs_emit(buf, "%d\n", res);
+}
+static DEVICE_ATTR_RO(clock_status_drift);
+
+static ssize_t
+clock_status_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ u32 val;
+ int res;
+
+ val = ioread32(&bp->reg->status_offset);
+ res = (val & ~INT_MAX) ? -1 : 1;
+ res *= (val & INT_MAX);
+ return sysfs_emit(buf, "%d\n", res);
+}
+static DEVICE_ATTR_RO(clock_status_offset);
+
+static ssize_t
+tod_correction_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ u32 val;
+ int res;
+
+ val = ioread32(&bp->tod->adj_sec);
+ res = (val & ~INT_MAX) ? -1 : 1;
+ res *= (val & INT_MAX);
+ return sysfs_emit(buf, "%d\n", res);
+}
+
+static ssize_t
+tod_correction_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ unsigned long flags;
+ int err, res;
+ u32 val = 0;
+
+ err = kstrtos32(buf, 0, &res);
+ if (err)
+ return err;
+ if (res < 0) {
+ res *= -1;
+ val |= BIT(31);
+ }
+ val |= res;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ iowrite32(val, &bp->tod->adj_sec);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return count;
+}
+static DEVICE_ATTR_RW(tod_correction);
+
+#define _DEVICE_SIGNAL_GROUP_ATTRS(_nr) \
+ static struct attribute *fb_timecard_signal##_nr##_attrs[] = { \
+ &dev_attr_signal##_nr##_signal.attr.attr, \
+ &dev_attr_signal##_nr##_duty.attr.attr, \
+ &dev_attr_signal##_nr##_phase.attr.attr, \
+ &dev_attr_signal##_nr##_period.attr.attr, \
+ &dev_attr_signal##_nr##_polarity.attr.attr, \
+ &dev_attr_signal##_nr##_running.attr.attr, \
+ &dev_attr_signal##_nr##_start.attr.attr, \
+ NULL, \
+ }
+
+#define DEVICE_SIGNAL_GROUP(_name, _nr) \
+ _DEVICE_SIGNAL_GROUP_ATTRS(_nr); \
+ static const struct attribute_group \
+ fb_timecard_signal##_nr##_group = { \
+ .name = #_name, \
+ .attrs = fb_timecard_signal##_nr##_attrs, \
+}
+
+DEVICE_SIGNAL_GROUP(gen1, 0);
+DEVICE_SIGNAL_GROUP(gen2, 1);
+DEVICE_SIGNAL_GROUP(gen3, 2);
+DEVICE_SIGNAL_GROUP(gen4, 3);
+
+#define _DEVICE_FREQ_GROUP_ATTRS(_nr) \
+ static struct attribute *fb_timecard_freq##_nr##_attrs[] = { \
+ &dev_attr_freq##_nr##_seconds.attr.attr, \
+ &dev_attr_freq##_nr##_frequency.attr.attr, \
+ NULL, \
+ }
+
+#define DEVICE_FREQ_GROUP(_name, _nr) \
+ _DEVICE_FREQ_GROUP_ATTRS(_nr); \
+ static const struct attribute_group \
+ fb_timecard_freq##_nr##_group = { \
+ .name = #_name, \
+ .attrs = fb_timecard_freq##_nr##_attrs, \
+}
+
+DEVICE_FREQ_GROUP(freq1, 0);
+DEVICE_FREQ_GROUP(freq2, 1);
+DEVICE_FREQ_GROUP(freq3, 2);
+DEVICE_FREQ_GROUP(freq4, 3);
+
+static struct attribute *fb_timecard_attrs[] = {
+ &dev_attr_serialnum.attr,
+ &dev_attr_gnss_sync.attr,
+ &dev_attr_clock_source.attr,
+ &dev_attr_available_clock_sources.attr,
+ &dev_attr_sma1.attr,
+ &dev_attr_sma2.attr,
+ &dev_attr_sma3.attr,
+ &dev_attr_sma4.attr,
+ &dev_attr_available_sma_inputs.attr,
+ &dev_attr_available_sma_outputs.attr,
+ &dev_attr_clock_status_drift.attr,
+ &dev_attr_clock_status_offset.attr,
+ &dev_attr_irig_b_mode.attr,
+ &dev_attr_utc_tai_offset.attr,
+ &dev_attr_ts_window_adjust.attr,
+ &dev_attr_tod_correction.attr,
+ NULL,
+};
+static const struct attribute_group fb_timecard_group = {
+ .attrs = fb_timecard_attrs,
+};
+static const struct ocp_attr_group fb_timecard_groups[] = {
+ { .cap = OCP_CAP_BASIC, .group = &fb_timecard_group },
+ { .cap = OCP_CAP_SIGNAL, .group = &fb_timecard_signal0_group },
+ { .cap = OCP_CAP_SIGNAL, .group = &fb_timecard_signal1_group },
+ { .cap = OCP_CAP_SIGNAL, .group = &fb_timecard_signal2_group },
+ { .cap = OCP_CAP_SIGNAL, .group = &fb_timecard_signal3_group },
+ { .cap = OCP_CAP_FREQ, .group = &fb_timecard_freq0_group },
+ { .cap = OCP_CAP_FREQ, .group = &fb_timecard_freq1_group },
+ { .cap = OCP_CAP_FREQ, .group = &fb_timecard_freq2_group },
+ { .cap = OCP_CAP_FREQ, .group = &fb_timecard_freq3_group },
+ { },
+};
+
+static void
+gpio_input_map(char *buf, struct ptp_ocp *bp, u16 map[][2], u16 bit,
+ const char *def)
+{
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ if (bp->sma[i].mode != SMA_MODE_IN)
+ continue;
+ if (map[i][0] & (1 << bit)) {
+ sprintf(buf, "sma%d", i + 1);
+ return;
+ }
+ }
+ if (!def)
+ def = "----";
+ strcpy(buf, def);
+}
+
+static void
+gpio_output_map(char *buf, struct ptp_ocp *bp, u16 map[][2], u16 bit)
+{
+ char *ans = buf;
+ int i;
+
+ strcpy(ans, "----");
+ for (i = 0; i < 4; i++) {
+ if (bp->sma[i].mode != SMA_MODE_OUT)
+ continue;
+ if (map[i][1] & (1 << bit))
+ ans += sprintf(ans, "sma%d ", i + 1);
+ }
+}
+
+static void
+_signal_summary_show(struct seq_file *s, struct ptp_ocp *bp, int nr)
+{
+ struct signal_reg __iomem *reg = bp->signal_out[nr]->mem;
+ struct ptp_ocp_signal *signal = &bp->signal[nr];
+ char label[8];
+ bool on;
+ u32 val;
+
+ if (!signal)
+ return;
+
+ on = signal->running;
+ sprintf(label, "GEN%d", nr + 1);
+ seq_printf(s, "%7s: %s, period:%llu duty:%d%% phase:%llu pol:%d",
+ label, on ? " ON" : "OFF",
+ signal->period, signal->duty, signal->phase,
+ signal->polarity);
+
+ val = ioread32(&reg->enable);
+ seq_printf(s, " [%x", val);
+ val = ioread32(&reg->status);
+ seq_printf(s, " %x]", val);
+
+ seq_printf(s, " start:%llu\n", signal->start);
+}
+
+static void
+_frequency_summary_show(struct seq_file *s, int nr,
+ struct frequency_reg __iomem *reg)
+{
+ char label[8];
+ bool on;
+ u32 val;
+
+ if (!reg)
+ return;
+
+ sprintf(label, "FREQ%d", nr + 1);
+ val = ioread32(&reg->ctrl);
+ on = val & 1;
+ val = (val >> 8) & 0xff;
+ seq_printf(s, "%7s: %s, sec:%u",
+ label,
+ on ? " ON" : "OFF",
+ val);
+
+ val = ioread32(&reg->status);
+ if (val & FREQ_STATUS_ERROR)
+ seq_printf(s, ", error");
+ if (val & FREQ_STATUS_OVERRUN)
+ seq_printf(s, ", overrun");
+ if (val & FREQ_STATUS_VALID)
+ seq_printf(s, ", freq %lu Hz", val & FREQ_STATUS_MASK);
+ seq_printf(s, " reg:%x\n", val);
+}
+
+static int
+ptp_ocp_summary_show(struct seq_file *s, void *data)
+{
+ struct device *dev = s->private;
+ struct ptp_system_timestamp sts;
+ struct ts_reg __iomem *ts_reg;
+ char *buf, *src, *mac_src;
+ struct timespec64 ts;
+ struct ptp_ocp *bp;
+ u16 sma_val[4][2];
+ u32 ctrl, val;
+ bool on, map;
+ int i;
+
+ buf = (char *)__get_free_page(GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ bp = dev_get_drvdata(dev);
+
+ seq_printf(s, "%7s: /dev/ptp%d\n", "PTP", ptp_clock_index(bp->ptp));
+ if (bp->gnss_port != -1)
+ seq_printf(s, "%7s: /dev/ttyS%d\n", "GNSS1", bp->gnss_port);
+ if (bp->gnss2_port != -1)
+ seq_printf(s, "%7s: /dev/ttyS%d\n", "GNSS2", bp->gnss2_port);
+ if (bp->mac_port != -1)
+ seq_printf(s, "%7s: /dev/ttyS%d\n", "MAC", bp->mac_port);
+ if (bp->nmea_port != -1)
+ seq_printf(s, "%7s: /dev/ttyS%d\n", "NMEA", bp->nmea_port);
+
+ memset(sma_val, 0xff, sizeof(sma_val));
+ if (bp->sma_map1) {
+ u32 reg;
+
+ reg = ioread32(&bp->sma_map1->gpio1);
+ sma_val[0][0] = reg & 0xffff;
+ sma_val[1][0] = reg >> 16;
+
+ reg = ioread32(&bp->sma_map1->gpio2);
+ sma_val[2][1] = reg & 0xffff;
+ sma_val[3][1] = reg >> 16;
+
+ reg = ioread32(&bp->sma_map2->gpio1);
+ sma_val[2][0] = reg & 0xffff;
+ sma_val[3][0] = reg >> 16;
+
+ reg = ioread32(&bp->sma_map2->gpio2);
+ sma_val[0][1] = reg & 0xffff;
+ sma_val[1][1] = reg >> 16;
+ }
+
+ sma1_show(dev, NULL, buf);
+ seq_printf(s, " sma1: %04x,%04x %s",
+ sma_val[0][0], sma_val[0][1], buf);
+
+ sma2_show(dev, NULL, buf);
+ seq_printf(s, " sma2: %04x,%04x %s",
+ sma_val[1][0], sma_val[1][1], buf);
+
+ sma3_show(dev, NULL, buf);
+ seq_printf(s, " sma3: %04x,%04x %s",
+ sma_val[2][0], sma_val[2][1], buf);
+
+ sma4_show(dev, NULL, buf);
+ seq_printf(s, " sma4: %04x,%04x %s",
+ sma_val[3][0], sma_val[3][1], buf);
+
+ if (bp->ts0) {
+ ts_reg = bp->ts0->mem;
+ on = ioread32(&ts_reg->enable);
+ src = "GNSS1";
+ seq_printf(s, "%7s: %s, src: %s\n", "TS0",
+ on ? " ON" : "OFF", src);
+ }
+
+ if (bp->ts1) {
+ ts_reg = bp->ts1->mem;
+ on = ioread32(&ts_reg->enable);
+ gpio_input_map(buf, bp, sma_val, 2, NULL);
+ seq_printf(s, "%7s: %s, src: %s\n", "TS1",
+ on ? " ON" : "OFF", buf);
+ }
+
+ if (bp->ts2) {
+ ts_reg = bp->ts2->mem;
+ on = ioread32(&ts_reg->enable);
+ gpio_input_map(buf, bp, sma_val, 3, NULL);
+ seq_printf(s, "%7s: %s, src: %s\n", "TS2",
+ on ? " ON" : "OFF", buf);
+ }
+
+ if (bp->ts3) {
+ ts_reg = bp->ts3->mem;
+ on = ioread32(&ts_reg->enable);
+ gpio_input_map(buf, bp, sma_val, 6, NULL);
+ seq_printf(s, "%7s: %s, src: %s\n", "TS3",
+ on ? " ON" : "OFF", buf);
+ }
+
+ if (bp->ts4) {
+ ts_reg = bp->ts4->mem;
+ on = ioread32(&ts_reg->enable);
+ gpio_input_map(buf, bp, sma_val, 7, NULL);
+ seq_printf(s, "%7s: %s, src: %s\n", "TS4",
+ on ? " ON" : "OFF", buf);
+ }
+
+ if (bp->pps) {
+ ts_reg = bp->pps->mem;
+ src = "PHC";
+ on = ioread32(&ts_reg->enable);
+ map = !!(bp->pps_req_map & OCP_REQ_TIMESTAMP);
+ seq_printf(s, "%7s: %s, src: %s\n", "TS5",
+ on && map ? " ON" : "OFF", src);
+
+ map = !!(bp->pps_req_map & OCP_REQ_PPS);
+ seq_printf(s, "%7s: %s, src: %s\n", "PPS",
+ on && map ? " ON" : "OFF", src);
+ }
+
+ if (bp->fw_cap & OCP_CAP_SIGNAL)
+ for (i = 0; i < 4; i++)
+ _signal_summary_show(s, bp, i);
+
+ if (bp->fw_cap & OCP_CAP_FREQ)
+ for (i = 0; i < 4; i++)
+ _frequency_summary_show(s, i, bp->freq_in[i]);
+
+ if (bp->irig_out) {
+ ctrl = ioread32(&bp->irig_out->ctrl);
+ on = ctrl & IRIG_M_CTRL_ENABLE;
+ val = ioread32(&bp->irig_out->status);
+ gpio_output_map(buf, bp, sma_val, 4);
+ seq_printf(s, "%7s: %s, error: %d, mode %d, out: %s\n", "IRIG",
+ on ? " ON" : "OFF", val, (ctrl >> 16), buf);
+ }
+
+ if (bp->irig_in) {
+ on = ioread32(&bp->irig_in->ctrl) & IRIG_S_CTRL_ENABLE;
+ val = ioread32(&bp->irig_in->status);
+ gpio_input_map(buf, bp, sma_val, 4, NULL);
+ seq_printf(s, "%7s: %s, error: %d, src: %s\n", "IRIG in",
+ on ? " ON" : "OFF", val, buf);
+ }
+
+ if (bp->dcf_out) {
+ on = ioread32(&bp->dcf_out->ctrl) & DCF_M_CTRL_ENABLE;
+ val = ioread32(&bp->dcf_out->status);
+ gpio_output_map(buf, bp, sma_val, 5);
+ seq_printf(s, "%7s: %s, error: %d, out: %s\n", "DCF",
+ on ? " ON" : "OFF", val, buf);
+ }
+
+ if (bp->dcf_in) {
+ on = ioread32(&bp->dcf_in->ctrl) & DCF_S_CTRL_ENABLE;
+ val = ioread32(&bp->dcf_in->status);
+ gpio_input_map(buf, bp, sma_val, 5, NULL);
+ seq_printf(s, "%7s: %s, error: %d, src: %s\n", "DCF in",
+ on ? " ON" : "OFF", val, buf);
+ }
+
+ if (bp->nmea_out) {
+ on = ioread32(&bp->nmea_out->ctrl) & 1;
+ val = ioread32(&bp->nmea_out->status);
+ seq_printf(s, "%7s: %s, error: %d\n", "NMEA",
+ on ? " ON" : "OFF", val);
+ }
+
+ /* compute src for PPS1, used below. */
+ if (bp->pps_select) {
+ val = ioread32(&bp->pps_select->gpio1);
+ src = &buf[80];
+ mac_src = "GNSS1";
+ if (val & 0x01) {
+ gpio_input_map(src, bp, sma_val, 0, NULL);
+ mac_src = src;
+ } else if (val & 0x02) {
+ src = "MAC";
+ } else if (val & 0x04) {
+ src = "GNSS1";
+ } else {
+ src = "----";
+ mac_src = src;
+ }
+ } else {
+ src = "?";
+ mac_src = src;
+ }
+ seq_printf(s, "MAC PPS1 src: %s\n", mac_src);
+
+ gpio_input_map(buf, bp, sma_val, 1, "GNSS2");
+ seq_printf(s, "MAC PPS2 src: %s\n", buf);
+
+ /* assumes automatic switchover/selection */
+ val = ioread32(&bp->reg->select);
+ switch (val >> 16) {
+ case 0:
+ sprintf(buf, "----");
+ break;
+ case 2:
+ sprintf(buf, "IRIG");
+ break;
+ case 3:
+ sprintf(buf, "%s via PPS1", src);
+ break;
+ case 6:
+ sprintf(buf, "DCF");
+ break;
+ default:
+ strcpy(buf, "unknown");
+ break;
+ }
+ val = ioread32(&bp->reg->status);
+ seq_printf(s, "%7s: %s, state: %s\n", "PHC src", buf,
+ val & OCP_STATUS_IN_SYNC ? "sync" : "unsynced");
+
+ if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, &sts)) {
+ struct timespec64 sys_ts;
+ s64 pre_ns, post_ns, ns;
+
+ pre_ns = timespec64_to_ns(&sts.pre_ts);
+ post_ns = timespec64_to_ns(&sts.post_ts);
+ ns = (pre_ns + post_ns) / 2;
+ ns += (s64)bp->utc_tai_offset * NSEC_PER_SEC;
+ sys_ts = ns_to_timespec64(ns);
+
+ seq_printf(s, "%7s: %lld.%ld == %ptT TAI\n", "PHC",
+ ts.tv_sec, ts.tv_nsec, &ts);
+ seq_printf(s, "%7s: %lld.%ld == %ptT UTC offset %d\n", "SYS",
+ sys_ts.tv_sec, sys_ts.tv_nsec, &sys_ts,
+ bp->utc_tai_offset);
+ seq_printf(s, "%7s: PHC:SYS offset: %lld window: %lld\n", "",
+ timespec64_to_ns(&ts) - ns,
+ post_ns - pre_ns);
+ }
+
+ free_page((unsigned long)buf);
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(ptp_ocp_summary);
+
+static int
+ptp_ocp_tod_status_show(struct seq_file *s, void *data)
+{
+ struct device *dev = s->private;
+ struct ptp_ocp *bp;
+ u32 val;
+ int idx;
+
+ bp = dev_get_drvdata(dev);
+
+ val = ioread32(&bp->tod->ctrl);
+ if (!(val & TOD_CTRL_ENABLE)) {
+ seq_printf(s, "TOD Slave disabled\n");
+ return 0;
+ }
+ seq_printf(s, "TOD Slave enabled, Control Register 0x%08X\n", val);
+
+ idx = val & TOD_CTRL_PROTOCOL ? 4 : 0;
+ idx += (val >> 16) & 3;
+ seq_printf(s, "Protocol %s\n", ptp_ocp_tod_proto_name(idx));
+
+ idx = (val >> TOD_CTRL_GNSS_SHIFT) & TOD_CTRL_GNSS_MASK;
+ seq_printf(s, "GNSS %s\n", ptp_ocp_tod_gnss_name(idx));
+
+ val = ioread32(&bp->tod->version);
+ seq_printf(s, "TOD Version %d.%d.%d\n",
+ val >> 24, (val >> 16) & 0xff, val & 0xffff);
+
+ val = ioread32(&bp->tod->status);
+ seq_printf(s, "Status register: 0x%08X\n", val);
+
+ val = ioread32(&bp->tod->adj_sec);
+ idx = (val & ~INT_MAX) ? -1 : 1;
+ idx *= (val & INT_MAX);
+ seq_printf(s, "Correction seconds: %d\n", idx);
+
+ val = ioread32(&bp->tod->utc_status);
+ seq_printf(s, "UTC status register: 0x%08X\n", val);
+ seq_printf(s, "UTC offset: %ld valid:%d\n",
+ val & TOD_STATUS_UTC_MASK, val & TOD_STATUS_UTC_VALID ? 1 : 0);
+ seq_printf(s, "Leap second info valid:%d, Leap second announce %d\n",
+ val & TOD_STATUS_LEAP_VALID ? 1 : 0,
+ val & TOD_STATUS_LEAP_ANNOUNCE ? 1 : 0);
+
+ val = ioread32(&bp->tod->leap);
+ seq_printf(s, "Time to next leap second (in sec): %d\n", (s32) val);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(ptp_ocp_tod_status);
+
+static struct dentry *ptp_ocp_debugfs_root;
+
+static void
+ptp_ocp_debugfs_add_device(struct ptp_ocp *bp)
+{
+ struct dentry *d;
+
+ d = debugfs_create_dir(dev_name(&bp->dev), ptp_ocp_debugfs_root);
+ bp->debug_root = d;
+ debugfs_create_file("summary", 0444, bp->debug_root,
+ &bp->dev, &ptp_ocp_summary_fops);
+ if (bp->tod)
+ debugfs_create_file("tod_status", 0444, bp->debug_root,
+ &bp->dev, &ptp_ocp_tod_status_fops);
+}
+
+static void
+ptp_ocp_debugfs_remove_device(struct ptp_ocp *bp)
+{
+ debugfs_remove_recursive(bp->debug_root);
+}
+
+static void
+ptp_ocp_debugfs_init(void)
+{
+ ptp_ocp_debugfs_root = debugfs_create_dir("timecard", NULL);
+}
+
+static void
+ptp_ocp_debugfs_fini(void)
+{
+ debugfs_remove_recursive(ptp_ocp_debugfs_root);
+}
+
+static void
+ptp_ocp_dev_release(struct device *dev)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ mutex_lock(&ptp_ocp_lock);
+ idr_remove(&ptp_ocp_idr, bp->id);
+ mutex_unlock(&ptp_ocp_lock);
+}
+
+static int
+ptp_ocp_device_init(struct ptp_ocp *bp, struct pci_dev *pdev)
+{
+ int err;
+
+ mutex_lock(&ptp_ocp_lock);
+ err = idr_alloc(&ptp_ocp_idr, bp, 0, 0, GFP_KERNEL);
+ mutex_unlock(&ptp_ocp_lock);
+ if (err < 0) {
+ dev_err(&pdev->dev, "idr_alloc failed: %d\n", err);
+ return err;
+ }
+ bp->id = err;
+
+ bp->ptp_info = ptp_ocp_clock_info;
+ spin_lock_init(&bp->lock);
+ bp->gnss_port = -1;
+ bp->gnss2_port = -1;
+ bp->mac_port = -1;
+ bp->nmea_port = -1;
+ bp->pdev = pdev;
+
+ device_initialize(&bp->dev);
+ dev_set_name(&bp->dev, "ocp%d", bp->id);
+ bp->dev.class = &timecard_class;
+ bp->dev.parent = &pdev->dev;
+ bp->dev.release = ptp_ocp_dev_release;
+ dev_set_drvdata(&bp->dev, bp);
+
+ err = device_add(&bp->dev);
+ if (err) {
+ dev_err(&bp->dev, "device add failed: %d\n", err);
+ goto out;
+ }
+
+ pci_set_drvdata(pdev, bp);
+
+ return 0;
+
+out:
+ put_device(&bp->dev);
+ return err;
+}
+
+static void
+ptp_ocp_symlink(struct ptp_ocp *bp, struct device *child, const char *link)
+{
+ struct device *dev = &bp->dev;
+
+ if (sysfs_create_link(&dev->kobj, &child->kobj, link))
+ dev_err(dev, "%s symlink failed\n", link);
+}
+
+static void
+ptp_ocp_link_child(struct ptp_ocp *bp, const char *name, const char *link)
+{
+ struct device *dev, *child;
+
+ dev = &bp->pdev->dev;
+
+ child = device_find_child_by_name(dev, name);
+ if (!child) {
+ dev_err(dev, "Could not find device %s\n", name);
+ return;
+ }
+
+ ptp_ocp_symlink(bp, child, link);
+ put_device(child);
+}
+
+static int
+ptp_ocp_complete(struct ptp_ocp *bp)
+{
+ struct pps_device *pps;
+ char buf[32];
+
+ if (bp->gnss_port != -1) {
+ sprintf(buf, "ttyS%d", bp->gnss_port);
+ ptp_ocp_link_child(bp, buf, "ttyGNSS");
+ }
+ if (bp->gnss2_port != -1) {
+ sprintf(buf, "ttyS%d", bp->gnss2_port);
+ ptp_ocp_link_child(bp, buf, "ttyGNSS2");
+ }
+ if (bp->mac_port != -1) {
+ sprintf(buf, "ttyS%d", bp->mac_port);
+ ptp_ocp_link_child(bp, buf, "ttyMAC");
+ }
+ if (bp->nmea_port != -1) {
+ sprintf(buf, "ttyS%d", bp->nmea_port);
+ ptp_ocp_link_child(bp, buf, "ttyNMEA");
+ }
+ sprintf(buf, "ptp%d", ptp_clock_index(bp->ptp));
+ ptp_ocp_link_child(bp, buf, "ptp");
+
+ pps = pps_lookup_dev(bp->ptp);
+ if (pps)
+ ptp_ocp_symlink(bp, pps->dev, "pps");
+
+ ptp_ocp_debugfs_add_device(bp);
+
+ return 0;
+}
+
+static void
+ptp_ocp_phc_info(struct ptp_ocp *bp)
+{
+ struct timespec64 ts;
+ u32 version, select;
+ bool sync;
+
+ version = ioread32(&bp->reg->version);
+ select = ioread32(&bp->reg->select);
+ dev_info(&bp->pdev->dev, "Version %d.%d.%d, clock %s, device ptp%d\n",
+ version >> 24, (version >> 16) & 0xff, version & 0xffff,
+ ptp_ocp_select_name_from_val(ptp_ocp_clock, select >> 16),
+ ptp_clock_index(bp->ptp));
+
+ sync = ioread32(&bp->reg->status) & OCP_STATUS_IN_SYNC;
+ if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, NULL))
+ dev_info(&bp->pdev->dev, "Time: %lld.%ld, %s\n",
+ ts.tv_sec, ts.tv_nsec,
+ sync ? "in-sync" : "UNSYNCED");
+}
+
+static void
+ptp_ocp_serial_info(struct device *dev, const char *name, int port, int baud)
+{
+ if (port != -1)
+ dev_info(dev, "%5s: /dev/ttyS%-2d @ %6d\n", name, port, baud);
+}
+
+static void
+ptp_ocp_info(struct ptp_ocp *bp)
+{
+ static int nmea_baud[] = {
+ 1200, 2400, 4800, 9600, 19200, 38400,
+ 57600, 115200, 230400, 460800, 921600,
+ 1000000, 2000000
+ };
+ struct device *dev = &bp->pdev->dev;
+ u32 reg;
+
+ ptp_ocp_phc_info(bp);
+
+ ptp_ocp_serial_info(dev, "GNSS", bp->gnss_port, 115200);
+ ptp_ocp_serial_info(dev, "GNSS2", bp->gnss2_port, 115200);
+ ptp_ocp_serial_info(dev, "MAC", bp->mac_port, 57600);
+ if (bp->nmea_out && bp->nmea_port != -1) {
+ int baud = -1;
+
+ reg = ioread32(&bp->nmea_out->uart_baud);
+ if (reg < ARRAY_SIZE(nmea_baud))
+ baud = nmea_baud[reg];
+ ptp_ocp_serial_info(dev, "NMEA", bp->nmea_port, baud);
+ }
+}
+
+static void
+ptp_ocp_detach_sysfs(struct ptp_ocp *bp)
+{
+ struct device *dev = &bp->dev;
+
+ sysfs_remove_link(&dev->kobj, "ttyGNSS");
+ sysfs_remove_link(&dev->kobj, "ttyGNSS2");
+ sysfs_remove_link(&dev->kobj, "ttyMAC");
+ sysfs_remove_link(&dev->kobj, "ptp");
+ sysfs_remove_link(&dev->kobj, "pps");
+}
+
+static void
+ptp_ocp_detach(struct ptp_ocp *bp)
+{
+ int i;
+
+ ptp_ocp_debugfs_remove_device(bp);
+ ptp_ocp_detach_sysfs(bp);
+ ptp_ocp_attr_group_del(bp);
+ if (timer_pending(&bp->watchdog))
+ del_timer_sync(&bp->watchdog);
+ if (bp->ts0)
+ ptp_ocp_unregister_ext(bp->ts0);
+ if (bp->ts1)
+ ptp_ocp_unregister_ext(bp->ts1);
+ if (bp->ts2)
+ ptp_ocp_unregister_ext(bp->ts2);
+ if (bp->ts3)
+ ptp_ocp_unregister_ext(bp->ts3);
+ if (bp->ts4)
+ ptp_ocp_unregister_ext(bp->ts4);
+ if (bp->pps)
+ ptp_ocp_unregister_ext(bp->pps);
+ for (i = 0; i < 4; i++)
+ if (bp->signal_out[i])
+ ptp_ocp_unregister_ext(bp->signal_out[i]);
+ if (bp->gnss_port != -1)
+ serial8250_unregister_port(bp->gnss_port);
+ if (bp->gnss2_port != -1)
+ serial8250_unregister_port(bp->gnss2_port);
+ if (bp->mac_port != -1)
+ serial8250_unregister_port(bp->mac_port);
+ if (bp->nmea_port != -1)
+ serial8250_unregister_port(bp->nmea_port);
+ platform_device_unregister(bp->spi_flash);
+ platform_device_unregister(bp->i2c_ctrl);
+ if (bp->i2c_clk)
+ clk_hw_unregister_fixed_rate(bp->i2c_clk);
+ if (bp->n_irqs)
+ pci_free_irq_vectors(bp->pdev);
+ if (bp->ptp)
+ ptp_clock_unregister(bp->ptp);
+ kfree(bp->ptp_info.pin_config);
+ device_unregister(&bp->dev);
+}
+
+static int
+ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct devlink *devlink;
+ struct ptp_ocp *bp;
+ int err;
+
+ devlink = devlink_alloc(&ptp_ocp_devlink_ops, sizeof(*bp), &pdev->dev);
+ if (!devlink) {
+ dev_err(&pdev->dev, "devlink_alloc failed\n");
+ return -ENOMEM;
+ }
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "pci_enable_device\n");
+ goto out_free;
+ }
+
+ bp = devlink_priv(devlink);
+ err = ptp_ocp_device_init(bp, pdev);
+ if (err)
+ goto out_disable;
+
+ /* compat mode.
+ * Older FPGA firmware only returns 2 irq's.
+ * allow this - if not all of the IRQ's are returned, skip the
+ * extra devices and just register the clock.
+ */
+ err = pci_alloc_irq_vectors(pdev, 1, 17, PCI_IRQ_MSI | PCI_IRQ_MSIX);
+ if (err < 0) {
+ dev_err(&pdev->dev, "alloc_irq_vectors err: %d\n", err);
+ goto out;
+ }
+ bp->n_irqs = err;
+ pci_set_master(pdev);
+
+ err = ptp_ocp_register_resources(bp, id->driver_data);
+ if (err)
+ goto out;
+
+ bp->ptp = ptp_clock_register(&bp->ptp_info, &pdev->dev);
+ if (IS_ERR(bp->ptp)) {
+ err = PTR_ERR(bp->ptp);
+ dev_err(&pdev->dev, "ptp_clock_register: %d\n", err);
+ bp->ptp = NULL;
+ goto out;
+ }
+
+ err = ptp_ocp_complete(bp);
+ if (err)
+ goto out;
+
+ ptp_ocp_info(bp);
+ devlink_register(devlink);
+ return 0;
+
+out:
+ ptp_ocp_detach(bp);
+out_disable:
+ pci_disable_device(pdev);
+out_free:
+ devlink_free(devlink);
+ return err;
+}
+
+static void
+ptp_ocp_remove(struct pci_dev *pdev)
+{
+ struct ptp_ocp *bp = pci_get_drvdata(pdev);
+ struct devlink *devlink = priv_to_devlink(bp);
+
+ devlink_unregister(devlink);
+ ptp_ocp_detach(bp);
+ pci_disable_device(pdev);
+
+ devlink_free(devlink);
+}
+
+static struct pci_driver ptp_ocp_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = ptp_ocp_pcidev_id,
+ .probe = ptp_ocp_probe,
+ .remove = ptp_ocp_remove,
+};
+
+static int
+ptp_ocp_i2c_notifier_call(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct device *dev, *child = data;
+ struct ptp_ocp *bp;
+ bool add;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ case BUS_NOTIFY_DEL_DEVICE:
+ add = action == BUS_NOTIFY_ADD_DEVICE;
+ break;
+ default:
+ return 0;
+ }
+
+ if (!i2c_verify_adapter(child))
+ return 0;
+
+ dev = child;
+ while ((dev = dev->parent))
+ if (dev->driver && !strcmp(dev->driver->name, KBUILD_MODNAME))
+ goto found;
+ return 0;
+
+found:
+ bp = dev_get_drvdata(dev);
+ if (add)
+ ptp_ocp_symlink(bp, child, "i2c");
+ else
+ sysfs_remove_link(&bp->dev.kobj, "i2c");
+
+ return 0;
+}
+
+static struct notifier_block ptp_ocp_i2c_notifier = {
+ .notifier_call = ptp_ocp_i2c_notifier_call,
+};
+
+static int __init
+ptp_ocp_init(void)
+{
+ const char *what;
+ int err;
+
+ ptp_ocp_debugfs_init();
+
+ what = "timecard class";
+ err = class_register(&timecard_class);
+ if (err)
+ goto out;
+
+ what = "i2c notifier";
+ err = bus_register_notifier(&i2c_bus_type, &ptp_ocp_i2c_notifier);
+ if (err)
+ goto out_notifier;
+
+ what = "ptp_ocp driver";
+ err = pci_register_driver(&ptp_ocp_driver);
+ if (err)
+ goto out_register;
+
+ return 0;
+
+out_register:
+ bus_unregister_notifier(&i2c_bus_type, &ptp_ocp_i2c_notifier);
+out_notifier:
+ class_unregister(&timecard_class);
+out:
+ ptp_ocp_debugfs_fini();
+ pr_err(KBUILD_MODNAME ": failed to register %s: %d\n", what, err);
+ return err;
+}
+
+static void __exit
+ptp_ocp_fini(void)
+{
+ bus_unregister_notifier(&i2c_bus_type, &ptp_ocp_i2c_notifier);
+ pci_unregister_driver(&ptp_ocp_driver);
+ class_unregister(&timecard_class);
+ ptp_ocp_debugfs_fini();
+}
+
+module_init(ptp_ocp_init);
+module_exit(ptp_ocp_fini);
+
+MODULE_DESCRIPTION("OpenCompute TimeCard driver");
+MODULE_LICENSE("GPL v2");