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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/microchip/lan743x_ptp.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/microchip/lan743x_ptp.h')
-rw-r--r--drivers/net/ethernet/microchip/lan743x_ptp.h101
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.h b/drivers/net/ethernet/microchip/lan743x_ptp.h
new file mode 100644
index 000000000..e26d4eff7
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan743x_ptp.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2018 Microchip Technology Inc. */
+
+#ifndef _LAN743X_PTP_H
+#define _LAN743X_PTP_H
+
+#include "linux/ptp_clock_kernel.h"
+#include "linux/netdevice.h"
+
+#define LAN7430_N_LED 4
+#define LAN7430_N_GPIO 4 /* multiplexed with PHY LEDs */
+#define LAN7431_N_GPIO 12
+
+#define LAN743X_PTP_N_GPIO LAN7431_N_GPIO
+
+/* the number of periodic outputs is limited by number of
+ * PTP clock event channels
+ */
+#define LAN743X_PTP_N_EVENT_CHAN 2
+#define LAN743X_PTP_N_PEROUT LAN743X_PTP_N_EVENT_CHAN
+#define LAN743X_PTP_N_EXTTS 4
+#define LAN743X_PTP_N_PPS 0
+#define PCI11X1X_PTP_IO_MAX_CHANNELS 8
+
+struct lan743x_adapter;
+
+/* GPIO */
+struct lan743x_gpio {
+ /* gpio_lock: used to prevent concurrent access to gpio settings */
+ spinlock_t gpio_lock;
+
+ int used_bits;
+ int output_bits;
+ int ptp_bits;
+ u32 gpio_cfg0;
+ u32 gpio_cfg1;
+ u32 gpio_cfg2;
+ u32 gpio_cfg3;
+};
+
+int lan743x_gpio_init(struct lan743x_adapter *adapter);
+
+void lan743x_ptp_isr(void *context);
+bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
+void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
+void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
+ struct sk_buff *skb, bool ignore_sync);
+int lan743x_ptp_init(struct lan743x_adapter *adapter);
+int lan743x_ptp_open(struct lan743x_adapter *adapter);
+void lan743x_ptp_close(struct lan743x_adapter *adapter);
+void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
+ u32 link_speed);
+
+int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
+
+#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
+
+#define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1)
+#define PTP_FLAG_ISR_ENABLED BIT(2)
+
+struct lan743x_ptp_perout {
+ int event_ch; /* PTP event channel (0=channel A, 1=channel B) */
+ int gpio_pin; /* GPIO pin where output appears */
+};
+
+struct lan743x_extts {
+ int flags;
+ struct timespec64 ts;
+};
+
+struct lan743x_ptp {
+ int flags;
+
+ /* command_lock: used to prevent concurrent ptp commands */
+ struct mutex command_lock;
+
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info ptp_clock_info;
+ struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO];
+
+ unsigned long used_event_ch;
+ struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT];
+ int ptp_io_perout[LAN743X_PTP_N_PEROUT]; /* PTP event channel (0=channel A, 1=channel B) */
+ struct lan743x_extts extts[LAN743X_PTP_N_EXTTS];
+
+ bool leds_multiplexed;
+ bool led_enabled[LAN7430_N_LED];
+
+ /* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
+ spinlock_t tx_ts_lock;
+ int pending_tx_timestamps;
+ struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
+ unsigned int tx_ts_ignore_sync_queue;
+ int tx_ts_skb_queue_size;
+ u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
+ u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
+ u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
+ int tx_ts_queue_size;
+};
+
+#endif /* _LAN743X_PTP_H */