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Message-ID: <1533843370-26315-1-git-send-email-Bryan.Whitehead@microchip.com>
Date: Thu, 9 Aug 2018 15:36:10 -0400
From: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
<richardcochran@...il.com>
Subject: [PATCH v1 net-next] lan743x: lan743x: Add PTP support
PTP support includes:
Ingress, and egress timestamping.
One step timestamping available.
PTP clock support.
Periodic output support.
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
---
drivers/net/ethernet/microchip/Makefile | 2 +-
drivers/net/ethernet/microchip/lan743x_ethtool.c | 27 +
drivers/net/ethernet/microchip/lan743x_main.c | 78 +-
drivers/net/ethernet/microchip/lan743x_main.h | 101 +-
drivers/net/ethernet/microchip/lan743x_ptp.c | 1164 ++++++++++++++++++++++
drivers/net/ethernet/microchip/lan743x_ptp.h | 76 ++
6 files changed, 1443 insertions(+), 5 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan743x_ptp.c
create mode 100644 drivers/net/ethernet/microchip/lan743x_ptp.h
diff --git a/drivers/net/ethernet/microchip/Makefile b/drivers/net/ethernet/microchip/Makefile
index 43f47cb..538926d 100644
--- a/drivers/net/ethernet/microchip/Makefile
+++ b/drivers/net/ethernet/microchip/Makefile
@@ -6,4 +6,4 @@ obj-$(CONFIG_ENC28J60) += enc28j60.o
obj-$(CONFIG_ENCX24J600) += encx24j600.o encx24j600-regmap.o
obj-$(CONFIG_LAN743X) += lan743x.o
-lan743x-objs := lan743x_main.o lan743x_ethtool.o
+lan743x-objs := lan743x_main.o lan743x_ethtool.o lan743x_ptp.o
diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c
index c25b3e9..07c1eb6 100644
--- a/drivers/net/ethernet/microchip/lan743x_ethtool.c
+++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c
@@ -4,6 +4,7 @@
#include <linux/netdevice.h>
#include "lan743x_main.h"
#include "lan743x_ethtool.h"
+#include <linux/net_tstamp.h>
#include <linux/pci.h>
#include <linux/phy.h>
@@ -542,6 +543,31 @@ static int lan743x_ethtool_set_rxfh(struct net_device *netdev,
return 0;
}
+static int lan743x_ethtool_get_ts_info(struct net_device *netdev,
+ struct ethtool_ts_info *ts_info)
+{
+ struct lan743x_adapter *adapter = netdev_priv(netdev);
+
+ ts_info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE |
+ SOF_TIMESTAMPING_TX_HARDWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+
+ if (adapter->ptp.ptp_clock)
+ ts_info->phc_index = ptp_clock_index(adapter->ptp.ptp_clock);
+ else
+ ts_info->phc_index = -1;
+
+ ts_info->tx_types = BIT(HWTSTAMP_TX_OFF) |
+ BIT(HWTSTAMP_TX_ON) |
+ BIT(HWTSTAMP_TX_ONESTEP_SYNC);
+ ts_info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
+ BIT(HWTSTAMP_FILTER_ALL);
+ return 0;
+}
+
static int lan743x_ethtool_get_eee(struct net_device *netdev,
struct ethtool_eee *eee)
{
@@ -685,6 +711,7 @@ const struct ethtool_ops lan743x_ethtool_ops = {
.get_rxfh_indir_size = lan743x_ethtool_get_rxfh_indir_size,
.get_rxfh = lan743x_ethtool_get_rxfh,
.set_rxfh = lan743x_ethtool_set_rxfh,
+ .get_ts_info = lan743x_ethtool_get_ts_info,
.get_eee = lan743x_ethtool_get_eee,
.set_eee = lan743x_ethtool_set_eee,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index cd41911..48da18c 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -267,6 +267,10 @@ static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
lan743x_intr_software_isr(adapter);
int_sts &= ~INT_BIT_SW_GP_;
}
+ if (int_sts & INT_BIT_1588_) {
+ lan743x_ptp_isr(adapter);
+ int_sts &= ~INT_BIT_1588_;
+ }
}
if (int_sts)
lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
@@ -976,6 +980,7 @@ static void lan743x_phy_link_status_change(struct net_device *netdev)
ksettings.base.duplex,
local_advertisement,
remote_advertisement);
+ lan743x_ptp_update_latency(adapter, ksettings.base.speed);
}
}
@@ -1226,6 +1231,7 @@ static void lan743x_tx_release_desc(struct lan743x_tx *tx,
struct lan743x_tx_buffer_info *buffer_info = NULL;
struct lan743x_tx_descriptor *descriptor = NULL;
u32 descriptor_type = 0;
+ bool ignore_sync;
descriptor = &tx->ring_cpu_ptr[descriptor_index];
buffer_info = &tx->buffer_info[descriptor_index];
@@ -1256,11 +1262,27 @@ static void lan743x_tx_release_desc(struct lan743x_tx *tx,
buffer_info->dma_ptr = 0;
buffer_info->buffer_length = 0;
}
- if (buffer_info->skb) {
+ if (!buffer_info->skb)
+ goto clear_active;
+
+ if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
dev_kfree_skb(buffer_info->skb);
- buffer_info->skb = NULL;
+ goto clear_skb;
+ }
+
+ if (cleanup) {
+ lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
+ dev_kfree_skb(buffer_info->skb);
+ } else {
+ ignore_sync = (buffer_info->flags &
+ TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
+ lan743x_ptp_tx_timestamp_skb(tx->adapter,
+ buffer_info->skb, ignore_sync);
}
+clear_skb:
+ buffer_info->skb = NULL;
+
clear_active:
buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
@@ -1321,10 +1343,25 @@ static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
return last_head - last_tail - 1;
}
+void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
+ bool enable_timestamping,
+ bool enable_onestep_sync)
+{
+ if (enable_timestamping)
+ tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
+ else
+ tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
+ if (enable_onestep_sync)
+ tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
+ else
+ tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
+}
+
static int lan743x_tx_frame_start(struct lan743x_tx *tx,
unsigned char *first_buffer,
unsigned int first_buffer_length,
unsigned int frame_length,
+ bool time_stamp,
bool check_sum)
{
/* called only from within lan743x_tx_xmit_frame.
@@ -1362,6 +1399,8 @@ static int lan743x_tx_frame_start(struct lan743x_tx *tx,
TX_DESC_DATA0_DTYPE_DATA_ |
TX_DESC_DATA0_FS_ |
TX_DESC_DATA0_FCS_;
+ if (time_stamp)
+ tx->frame_data0 |= TX_DESC_DATA0_TSE_;
if (check_sum)
tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
@@ -1475,6 +1514,7 @@ static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
static void lan743x_tx_frame_end(struct lan743x_tx *tx,
struct sk_buff *skb,
+ bool time_stamp,
bool ignore_sync)
{
/* called only from within lan743x_tx_xmit_frame
@@ -1492,6 +1532,8 @@ static void lan743x_tx_frame_end(struct lan743x_tx *tx,
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
buffer_info = &tx->buffer_info[tx->frame_tail];
buffer_info->skb = skb;
+ if (time_stamp)
+ buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
if (ignore_sync)
buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
@@ -1520,6 +1562,7 @@ static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
unsigned int frame_length = 0;
unsigned int head_length = 0;
unsigned long irq_flags = 0;
+ bool do_timestamp = false;
bool ignore_sync = false;
int nr_frags = 0;
bool gso = false;
@@ -1541,6 +1584,14 @@ static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
}
/* space available, transmit skb */
+ if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+ (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
+ (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ do_timestamp = true;
+ if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
+ ignore_sync = true;
+ }
head_length = skb_headlen(skb);
frame_length = skb_pagelen(skb);
nr_frags = skb_shinfo(skb)->nr_frags;
@@ -1554,6 +1605,7 @@ static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
if (lan743x_tx_frame_start(tx,
skb->data, head_length,
start_frame_length,
+ do_timestamp,
skb->ip_summed == CHECKSUM_PARTIAL)) {
dev_kfree_skb(skb);
goto unlock;
@@ -1581,7 +1633,7 @@ static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
}
finish:
- lan743x_tx_frame_end(tx, skb, ignore_sync);
+ lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
unlock:
spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
@@ -2410,6 +2462,8 @@ static int lan743x_netdev_close(struct net_device *netdev)
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
lan743x_rx_close(&adapter->rx[index]);
+ lan743x_ptp_close(adapter);
+
lan743x_phy_close(adapter);
lan743x_mac_close(adapter);
@@ -2437,6 +2491,10 @@ static int lan743x_netdev_open(struct net_device *netdev)
if (ret)
goto close_mac;
+ ret = lan743x_ptp_open(adapter);
+ if (ret)
+ goto close_phy;
+
lan743x_rfe_open(adapter);
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
@@ -2456,6 +2514,9 @@ static int lan743x_netdev_open(struct net_device *netdev)
if (adapter->rx[index].ring_cpu_ptr)
lan743x_rx_close(&adapter->rx[index]);
}
+ lan743x_ptp_close(adapter);
+
+close_phy:
lan743x_phy_close(adapter);
close_mac:
@@ -2483,6 +2544,8 @@ static int lan743x_netdev_ioctl(struct net_device *netdev,
{
if (!netif_running(netdev))
return -EINVAL;
+ if (cmd == SIOCSHWTSTAMP)
+ return lan743x_ptp_ioctl(netdev, ifr, cmd);
return phy_mii_ioctl(netdev->phydev, ifr, cmd);
}
@@ -2607,6 +2670,11 @@ static int lan743x_hardware_init(struct lan743x_adapter *adapter,
adapter->intr.irq = adapter->pdev->irq;
lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
mutex_init(&adapter->dp_lock);
+
+ ret = lan743x_gpio_init(adapter);
+ if (ret)
+ return ret;
+
ret = lan743x_mac_init(adapter);
if (ret)
return ret;
@@ -2615,6 +2683,10 @@ static int lan743x_hardware_init(struct lan743x_adapter *adapter,
if (ret)
return ret;
+ ret = lan743x_ptp_init(adapter);
+ if (ret)
+ return ret;
+
lan743x_rfe_update_mac_address(adapter);
ret = lan743x_dmac_init(adapter);
diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h
index 4fa7a5e..0e82b63 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.h
+++ b/drivers/net/ethernet/microchip/lan743x_main.h
@@ -4,12 +4,17 @@
#ifndef _LAN743X_H
#define _LAN743X_H
+#include "lan743x_ptp.h"
+
#define DRIVER_AUTHOR "Bryan Whitehead <Bryan.Whitehead@...rochip.com>"
#define DRIVER_DESC "LAN743x PCIe Gigabit Ethernet Driver"
#define DRIVER_NAME "lan743x"
/* Register Definitions */
#define ID_REV (0x00)
+#define ID_REV_ID_MASK_ (0xFFFF0000)
+#define ID_REV_ID_LAN7430_ (0x74300000)
+#define ID_REV_ID_LAN7431_ (0x74310000)
#define ID_REV_IS_VALID_CHIP_ID_(id_rev) \
(((id_rev) & 0xFFF00000) == 0x74300000)
#define ID_REV_CHIP_REV_MASK_ (0x0000FFFF)
@@ -62,6 +67,21 @@
#define E2P_DATA (0x044)
+#define GPIO_CFG0 (0x050)
+#define GPIO_CFG0_GPIO_DIR_BIT_(bit) BIT(16 + (bit))
+#define GPIO_CFG0_GPIO_DATA_BIT_(bit) BIT(0 + (bit))
+
+#define GPIO_CFG1 (0x054)
+#define GPIO_CFG1_GPIOEN_BIT_(bit) BIT(16 + (bit))
+#define GPIO_CFG1_GPIOBUF_BIT_(bit) BIT(0 + (bit))
+
+#define GPIO_CFG2 (0x058)
+#define GPIO_CFG2_1588_POL_BIT_(bit) BIT(0 + (bit))
+
+#define GPIO_CFG3 (0x05C)
+#define GPIO_CFG3_1588_CH_SEL_BIT_(bit) BIT(16 + (bit))
+#define GPIO_CFG3_1588_OE_BIT_(bit) BIT(0 + (bit))
+
#define FCT_RX_CTL (0xAC)
#define FCT_RX_CTL_EN_(channel) BIT(28 + (channel))
#define FCT_RX_CTL_DIS_(channel) BIT(24 + (channel))
@@ -193,7 +213,8 @@
#define INT_BIT_DMA_TX_(channel) BIT(16 + (channel))
#define INT_BIT_ALL_TX_ (0x000F0000)
#define INT_BIT_SW_GP_ BIT(9)
-#define INT_BIT_ALL_OTHER_ (0x00000280)
+#define INT_BIT_1588_ BIT(7)
+#define INT_BIT_ALL_OTHER_ (INT_BIT_SW_GP_ | INT_BIT_1588_)
#define INT_BIT_MAS_ BIT(0)
#define INT_SET (0x784)
@@ -234,6 +255,71 @@
#define INT_MOD_CFG6 (0x7D8)
#define INT_MOD_CFG7 (0x7DC)
+#define PTP_CMD_CTL (0x0A00)
+#define PTP_CMD_CTL_PTP_CLK_STP_NSEC_ BIT(6)
+#define PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_ BIT(5)
+#define PTP_CMD_CTL_PTP_CLOCK_LOAD_ BIT(4)
+#define PTP_CMD_CTL_PTP_CLOCK_READ_ BIT(3)
+#define PTP_CMD_CTL_PTP_ENABLE_ BIT(2)
+#define PTP_CMD_CTL_PTP_DISABLE_ BIT(1)
+#define PTP_CMD_CTL_PTP_RESET_ BIT(0)
+#define PTP_GENERAL_CONFIG (0x0A04)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(channel) \
+ (0x7 << (1 + ((channel) << 2)))
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_ (0)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_ (1)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_ (2)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_ (3)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_ (4)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_ (5)
+#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_(channel, value) \
+ (((value) & 0x7) << (1 + ((channel) << 2)))
+#define PTP_GENERAL_CONFIG_RELOAD_ADD_X_(channel) (BIT((channel) << 2))
+
+#define PTP_INT_STS (0x0A08)
+#define PTP_INT_EN_SET (0x0A0C)
+#define PTP_INT_EN_CLR (0x0A10)
+#define PTP_INT_BIT_TX_SWTS_ERR_ BIT(13)
+#define PTP_INT_BIT_TX_TS_ BIT(12)
+#define PTP_INT_BIT_TIMER_B_ BIT(1)
+#define PTP_INT_BIT_TIMER_A_ BIT(0)
+
+#define PTP_CLOCK_SEC (0x0A14)
+#define PTP_CLOCK_NS (0x0A18)
+#define PTP_CLOCK_SUBNS (0x0A1C)
+#define PTP_CLOCK_RATE_ADJ (0x0A20)
+#define PTP_CLOCK_RATE_ADJ_DIR_ BIT(31)
+#define PTP_CLOCK_STEP_ADJ (0x0A2C)
+#define PTP_CLOCK_STEP_ADJ_DIR_ BIT(31)
+#define PTP_CLOCK_STEP_ADJ_VALUE_MASK_ (0x3FFFFFFF)
+#define PTP_CLOCK_TARGET_SEC_X(channel) (0x0A30 + ((channel) << 4))
+#define PTP_CLOCK_TARGET_NS_X(channel) (0x0A34 + ((channel) << 4))
+#define PTP_CLOCK_TARGET_RELOAD_SEC_X(channel) (0x0A38 + ((channel) << 4))
+#define PTP_CLOCK_TARGET_RELOAD_NS_X(channel) (0x0A3C + ((channel) << 4))
+#define PTP_LATENCY (0x0A5C)
+#define PTP_LATENCY_TX_SET_(tx_latency) (((u32)(tx_latency)) << 16)
+#define PTP_LATENCY_RX_SET_(rx_latency) \
+ (((u32)(rx_latency)) & 0x0000FFFF)
+#define PTP_CAP_INFO (0x0A60)
+#define PTP_CAP_INFO_TX_TS_CNT_GET_(reg_val) (((reg_val) & 0x00000070) >> 4)
+
+#define PTP_TX_MOD (0x0AA4)
+#define PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_ (0x10000000)
+
+#define PTP_TX_MOD2 (0x0AA8)
+#define PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_ (0x00000001)
+
+#define PTP_TX_EGRESS_SEC (0x0AAC)
+#define PTP_TX_EGRESS_NS (0x0AB0)
+#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_ (0xC0000000)
+#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_ (0x00000000)
+#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_ (0x40000000)
+#define PTP_TX_EGRESS_NS_TS_NS_MASK_ (0x3FFFFFFF)
+
+#define PTP_TX_MSG_HEADER (0x0AB4)
+#define PTP_TX_MSG_HEADER_MSG_TYPE_ (0x000F0000)
+#define PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_ (0x00000000)
+
#define DMAC_CFG (0xC00)
#define DMAC_CFG_COAL_EN_ BIT(16)
#define DMAC_CFG_CH_ARB_SEL_RX_HIGH_ (0x00000000)
@@ -542,8 +628,12 @@ struct lan743x_tx_buffer_info;
#define TX_FRAME_FLAG_IN_PROGRESS BIT(0)
+#define TX_TS_FLAG_TIMESTAMPING_ENABLED BIT(0)
+#define TX_TS_FLAG_ONE_STEP_SYNC BIT(1)
+
struct lan743x_tx {
struct lan743x_adapter *adapter;
+ u32 ts_flags;
u32 vector_flags;
int channel_number;
@@ -570,6 +660,10 @@ struct lan743x_tx {
struct sk_buff *overflow_skb;
};
+void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
+ bool enable_timestamping,
+ bool enable_onestep_sync);
+
/* RX */
struct lan743x_rx_descriptor;
struct lan743x_rx_buffer_info;
@@ -610,6 +704,9 @@ struct lan743x_adapter {
/* lock, used to prevent concurrent access to data port */
struct mutex dp_lock;
+ struct lan743x_gpio gpio;
+ struct lan743x_ptp ptp;
+
u8 mac_address[ETH_ALEN];
struct lan743x_phy phy;
@@ -660,6 +757,7 @@ struct lan743x_adapter {
#define TX_DESC_DATA0_IPE_ (0x00200000)
#define TX_DESC_DATA0_TPE_ (0x00100000)
#define TX_DESC_DATA0_FCS_ (0x00020000)
+#define TX_DESC_DATA0_TSE_ (0x00010000)
#define TX_DESC_DATA0_BUF_LENGTH_MASK_ (0x0000FFFF)
#define TX_DESC_DATA0_EXT_LSO_ (0x00200000)
#define TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_ (0x000FFFFF)
@@ -673,6 +771,7 @@ struct lan743x_tx_descriptor {
} __aligned(DEFAULT_DMA_DESCRIPTOR_SPACING);
#define TX_BUFFER_INFO_FLAG_ACTIVE BIT(0)
+#define TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED BIT(1)
#define TX_BUFFER_INFO_FLAG_IGNORE_SYNC BIT(2)
#define TX_BUFFER_INFO_FLAG_SKB_FRAGMENT BIT(3)
struct lan743x_tx_buffer_info {
diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c
new file mode 100644
index 0000000..42064fd
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan743x_ptp.c
@@ -0,0 +1,1164 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2018 Microchip Technology Inc. */
+
+#include <linux/netdevice.h>
+#include "lan743x_main.h"
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
+
+#include "lan743x_ptp.h"
+
+#define LAN743X_NUMBER_OF_GPIO (12)
+#define LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB (31249999)
+#define LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM (2047999934)
+
+static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter);
+static void lan743x_ptp_enable(struct lan743x_adapter *adapter);
+static void lan743x_ptp_disable(struct lan743x_adapter *adapter);
+static void lan743x_ptp_reset(struct lan743x_adapter *adapter);
+static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
+ u32 seconds, u32 nano_seconds,
+ u32 sub_nano_seconds);
+
+int lan743x_gpio_init(struct lan743x_adapter *adapter)
+{
+ struct lan743x_gpio *gpio = &adapter->gpio;
+
+ spin_lock_init(&gpio->gpio_lock);
+
+ gpio->gpio_cfg0 = 0; /* set all direction to input, data = 0 */
+ gpio->gpio_cfg1 = 0x0FFF0000;/* disable all gpio, set to open drain */
+ gpio->gpio_cfg2 = 0;/* set all to 1588 low polarity level */
+ gpio->gpio_cfg3 = 0;/* disable all 1588 output */
+ lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+ lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+ lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
+ lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
+
+ return 0;
+}
+
+static void lan743x_ptp_wait_till_cmd_done(struct lan743x_adapter *adapter,
+ u32 bit_mask)
+{
+ int timeout = 1000;
+ u32 data = 0;
+
+ while (timeout &&
+ (data = (lan743x_csr_read(adapter, PTP_CMD_CTL) &
+ bit_mask))) {
+ usleep_range(1000, 20000);
+ timeout--;
+ }
+ if (data) {
+ netif_err(adapter, drv, adapter->netdev,
+ "timeout waiting for cmd to be done, cmd = 0x%08X\n",
+ bit_mask);
+ }
+}
+
+static void lan743x_ptp_tx_ts_enqueue_ts(struct lan743x_adapter *adapter,
+ u32 seconds, u32 nano_seconds,
+ u32 header)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ spin_lock_bh(&ptp->tx_ts_lock);
+ if (ptp->tx_ts_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+ ptp->tx_ts_seconds_queue[ptp->tx_ts_queue_size] = seconds;
+ ptp->tx_ts_nseconds_queue[ptp->tx_ts_queue_size] = nano_seconds;
+ ptp->tx_ts_header_queue[ptp->tx_ts_queue_size] = header;
+ ptp->tx_ts_queue_size++;
+ } else {
+ netif_err(adapter, drv, adapter->netdev,
+ "tx ts queue overflow\n");
+ }
+ spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+static void lan743x_ptp_tx_ts_complete(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ struct skb_shared_hwtstamps tstamps;
+ u32 header, nseconds, seconds;
+ bool ignore_sync = false;
+ struct sk_buff *skb;
+ int c, i;
+
+ spin_lock_bh(&ptp->tx_ts_lock);
+ c = ptp->tx_ts_skb_queue_size;
+
+ if (c > ptp->tx_ts_queue_size)
+ c = ptp->tx_ts_queue_size;
+ if (c <= 0)
+ goto done;
+
+ for (i = 0; i < c; i++) {
+ ignore_sync = ((ptp->tx_ts_ignore_sync_queue &
+ BIT(i)) != 0);
+ skb = ptp->tx_ts_skb_queue[i];
+ nseconds = ptp->tx_ts_nseconds_queue[i];
+ seconds = ptp->tx_ts_seconds_queue[i];
+ header = ptp->tx_ts_header_queue[i];
+
+ memset(&tstamps, 0, sizeof(tstamps));
+ tstamps.hwtstamp = ktime_set(seconds, nseconds);
+ if (!ignore_sync ||
+ ((header & PTP_TX_MSG_HEADER_MSG_TYPE_) !=
+ PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_))
+ skb_tstamp_tx(skb, &tstamps);
+
+ dev_kfree_skb(skb);
+
+ ptp->tx_ts_skb_queue[i] = NULL;
+ ptp->tx_ts_seconds_queue[i] = 0;
+ ptp->tx_ts_nseconds_queue[i] = 0;
+ ptp->tx_ts_header_queue[i] = 0;
+ }
+
+ /* shift queue */
+ ptp->tx_ts_ignore_sync_queue >>= c;
+ for (i = c; i < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS; i++) {
+ ptp->tx_ts_skb_queue[i - c] = ptp->tx_ts_skb_queue[i];
+ ptp->tx_ts_seconds_queue[i - c] = ptp->tx_ts_seconds_queue[i];
+ ptp->tx_ts_nseconds_queue[i - c] = ptp->tx_ts_nseconds_queue[i];
+ ptp->tx_ts_header_queue[i - c] = ptp->tx_ts_header_queue[i];
+
+ ptp->tx_ts_skb_queue[i] = NULL;
+ ptp->tx_ts_seconds_queue[i] = 0;
+ ptp->tx_ts_nseconds_queue[i] = 0;
+ ptp->tx_ts_header_queue[i] = 0;
+ }
+ ptp->tx_ts_skb_queue_size -= c;
+ ptp->tx_ts_queue_size -= c;
+done:
+ ptp->pending_tx_timestamps -= c;
+ spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+#ifdef CONFIG_PTP_1588_CLOCK
+static int lan743x_ptp_reserve_event_ch(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ int result = -ENODEV;
+ int index = 0;
+
+ mutex_lock(&ptp->command_lock);
+ for (index = 0; index < LAN743X_PTP_NUMBER_OF_EVENT_CHANNELS; index++) {
+ if (!(test_bit(index, &ptp->used_event_ch))) {
+ ptp->used_event_ch |= BIT(index);
+ result = index;
+ break;
+ }
+ }
+ mutex_unlock(&ptp->command_lock);
+ return result;
+}
+
+static void lan743x_ptp_release_event_ch(struct lan743x_adapter *adapter,
+ int event_channel)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+ if (test_bit(event_channel, &ptp->used_event_ch)) {
+ ptp->used_event_ch &= ~BIT(event_channel);
+ } else {
+ netif_warn(adapter, drv, adapter->netdev,
+ "attempted release on a not used event_channel = %d\n",
+ event_channel);
+ }
+ mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
+ u32 *seconds, u32 *nano_seconds,
+ u32 *sub_nano_seconds);
+static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
+ s64 time_step_ns);
+
+static int lan743x_gpio_rsrv_ptp_out(struct lan743x_adapter *adapter,
+ int bit, int ptp_channel)
+{
+ struct lan743x_gpio *gpio = &adapter->gpio;
+ unsigned long irq_flags = 0;
+ int bit_mask = BIT(bit);
+ int ret = -EBUSY;
+
+ spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
+
+ if (!(gpio->used_bits & bit_mask)) {
+ gpio->used_bits |= bit_mask;
+ gpio->output_bits |= bit_mask;
+ gpio->ptp_bits |= bit_mask;
+
+ /* set as output, and zero initial value */
+ gpio->gpio_cfg0 |= GPIO_CFG0_GPIO_DIR_BIT_(bit);
+ gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+
+ /* enable gpio, and set buffer type to push pull */
+ gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOEN_BIT_(bit);
+ gpio->gpio_cfg1 |= GPIO_CFG1_GPIOBUF_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+
+ /* set 1588 polarity to high */
+ gpio->gpio_cfg2 |= GPIO_CFG2_1588_POL_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
+
+ if (!ptp_channel) {
+ /* use channel A */
+ gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_CH_SEL_BIT_(bit);
+ } else {
+ /* use channel B */
+ gpio->gpio_cfg3 |= GPIO_CFG3_1588_CH_SEL_BIT_(bit);
+ }
+ gpio->gpio_cfg3 |= GPIO_CFG3_1588_OE_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
+
+ ret = bit;
+ }
+ spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
+ return ret;
+}
+
+static void lan743x_gpio_release(struct lan743x_adapter *adapter, int bit)
+{
+ struct lan743x_gpio *gpio = &adapter->gpio;
+ unsigned long irq_flags = 0;
+ int bit_mask = BIT(bit);
+
+ spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
+ if (gpio->used_bits & bit_mask) {
+ gpio->used_bits &= ~bit_mask;
+ if (gpio->output_bits & bit_mask) {
+ gpio->output_bits &= ~bit_mask;
+
+ if (gpio->ptp_bits & bit_mask) {
+ gpio->ptp_bits &= ~bit_mask;
+ /* disable ptp output */
+ gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_OE_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG3,
+ gpio->gpio_cfg3);
+ }
+ /* release gpio output */
+
+ /* disable gpio */
+ gpio->gpio_cfg1 |= GPIO_CFG1_GPIOEN_BIT_(bit);
+ gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOBUF_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+
+ /* reset back to input */
+ gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DIR_BIT_(bit);
+ gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(bit);
+ lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+ }
+ }
+ spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
+}
+
+static int lan743x_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+ u32 lan743x_rate_adj = 0;
+ bool positive = true;
+ u64 u64_delta = 0;
+
+ if ((scaled_ppm < (-LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM)) ||
+ scaled_ppm > LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM) {
+ return -EINVAL;
+ }
+ if (scaled_ppm > 0) {
+ u64_delta = (u64)scaled_ppm;
+ positive = true;
+ } else {
+ u64_delta = (u64)(-scaled_ppm);
+ positive = false;
+ }
+ u64_delta = (u64_delta << 19);
+ lan743x_rate_adj = div_u64(u64_delta, 1000000);
+
+ if (positive)
+ lan743x_rate_adj |= PTP_CLOCK_RATE_ADJ_DIR_;
+
+ lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
+ lan743x_rate_adj);
+
+ return 0;
+}
+
+static int lan743x_ptpci_adjfreq(struct ptp_clock_info *ptpci, s32 delta_ppb)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+ u32 lan743x_rate_adj = 0;
+ bool positive = true;
+ u32 u32_delta = 0;
+ u64 u64_delta = 0;
+
+ if ((delta_ppb < (-LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB)) ||
+ delta_ppb > LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB) {
+ return -EINVAL;
+ }
+ if (delta_ppb > 0) {
+ u32_delta = (u32)delta_ppb;
+ positive = true;
+ } else {
+ u32_delta = (u32)(-delta_ppb);
+ positive = false;
+ }
+ u64_delta = (((u64)u32_delta) << 35);
+ lan743x_rate_adj = div_u64(u64_delta, 1000000000);
+
+ if (positive)
+ lan743x_rate_adj |= PTP_CLOCK_RATE_ADJ_DIR_;
+
+ lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
+ lan743x_rate_adj);
+
+ return 0;
+}
+
+static int lan743x_ptpci_adjtime(struct ptp_clock_info *ptpci, s64 delta)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+
+ lan743x_ptp_clock_step(adapter, delta);
+
+ return 0;
+}
+
+static int lan743x_ptpci_gettime64(struct ptp_clock_info *ptpci,
+ struct timespec64 *ts)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+ u32 nano_seconds = 0;
+ u32 seconds = 0;
+
+ lan743x_ptp_clock_get(adapter, &seconds, &nano_seconds, NULL);
+ ts->tv_sec = seconds;
+ ts->tv_nsec = nano_seconds;
+
+ return 0;
+}
+
+static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci,
+ const struct timespec64 *ts)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+ u32 nano_seconds = 0;
+ u32 seconds = 0;
+
+ if (ts) {
+ if (ts->tv_sec > 0xFFFFFFFFLL ||
+ ts->tv_sec < 0) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "ts->tv_sec out of range, %lld\n",
+ ts->tv_sec);
+ return -ERANGE;
+ }
+ if (ts->tv_nsec >= 1000000000L ||
+ ts->tv_nsec < 0) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "ts->tv_nsec out of range, %ld\n",
+ ts->tv_nsec);
+ return -ERANGE;
+ }
+ seconds = ts->tv_sec;
+ nano_seconds = ts->tv_nsec;
+ lan743x_ptp_clock_set(adapter, seconds, nano_seconds, 0);
+ } else {
+ netif_warn(adapter, drv, adapter->netdev, "ts == NULL\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void lan743x_ptp_perout_off(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ u32 general_config = 0;
+
+ if (ptp->perout_gpio_bit >= 0) {
+ lan743x_gpio_release(adapter, ptp->perout_gpio_bit);
+ ptp->perout_gpio_bit = -1;
+ }
+
+ if (ptp->perout_event_ch >= 0) {
+ /* set target to far in the future, effectively disabling it */
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_SEC_X(ptp->perout_event_ch),
+ 0xFFFF0000);
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_NS_X(ptp->perout_event_ch),
+ 0);
+
+ general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
+ general_config |= PTP_GENERAL_CONFIG_RELOAD_ADD_X_
+ (ptp->perout_event_ch);
+ lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
+ lan743x_ptp_release_event_ch(adapter, ptp->perout_event_ch);
+ ptp->perout_event_ch = -1;
+ }
+}
+
+static int lan743x_ptp_perout(struct lan743x_adapter *adapter, int on,
+ struct ptp_perout_request *perout)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ u32 period_sec = 0, period_nsec = 0;
+ u32 start_sec = 0, start_nsec = 0;
+ u32 general_config = 0;
+ int pulse_width = 0;
+ int perout_bit = 0;
+
+ if (!on) {
+ lan743x_ptp_perout_off(adapter);
+ return 0;
+ }
+
+ if (ptp->perout_event_ch >= 0 ||
+ ptp->perout_gpio_bit >= 0) {
+ /* already on, turn off first */
+ lan743x_ptp_perout_off(adapter);
+ }
+
+ ptp->perout_event_ch = lan743x_ptp_reserve_event_ch(adapter);
+ if (ptp->perout_event_ch < 0) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "Failed to reserve event channel for PEROUT\n");
+ goto failed;
+ }
+
+ switch (adapter->csr.id_rev & ID_REV_ID_MASK_) {
+ case ID_REV_ID_LAN7430_:
+ perout_bit = 2;/* GPIO 2 is preferred on EVB LAN7430 */
+ break;
+ case ID_REV_ID_LAN7431_:
+ perout_bit = 4;/* GPIO 4 is preferred on EVB LAN7431 */
+ break;
+ }
+
+ ptp->perout_gpio_bit = lan743x_gpio_rsrv_ptp_out(adapter,
+ perout_bit,
+ ptp->perout_event_ch);
+
+ if (ptp->perout_gpio_bit < 0) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "Failed to reserve gpio %d for PEROUT\n",
+ perout_bit);
+ goto failed;
+ }
+
+ start_sec = perout->start.sec;
+ start_sec += perout->start.nsec / 1000000000;
+ start_nsec = perout->start.nsec % 1000000000;
+
+ period_sec = perout->period.sec;
+ period_sec += perout->period.nsec / 1000000000;
+ period_nsec = perout->period.nsec % 1000000000;
+
+ if (period_sec == 0) {
+ if (period_nsec >= 400000000) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+ } else if (period_nsec >= 20000000) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
+ } else if (period_nsec >= 2000000) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
+ } else if (period_nsec >= 200000) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
+ } else if (period_nsec >= 20000) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
+ } else if (period_nsec >= 200) {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
+ } else {
+ netif_warn(adapter, drv, adapter->netdev,
+ "perout period too small, minimum is 200nS\n");
+ goto failed;
+ }
+ } else {
+ pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+ }
+
+ /* turn off by setting target far in future */
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_SEC_X(ptp->perout_event_ch),
+ 0xFFFF0000);
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_NS_X(ptp->perout_event_ch), 0);
+
+ /* Configure to pulse every period */
+ general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
+ general_config &= ~(PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_
+ (ptp->perout_event_ch));
+ general_config |= PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_
+ (ptp->perout_event_ch, pulse_width);
+ general_config &= ~PTP_GENERAL_CONFIG_RELOAD_ADD_X_
+ (ptp->perout_event_ch);
+ lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
+
+ /* set the reload to one toggle cycle */
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_RELOAD_SEC_X(ptp->perout_event_ch),
+ period_sec);
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_RELOAD_NS_X(ptp->perout_event_ch),
+ period_nsec);
+
+ /* set the start time */
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_SEC_X(ptp->perout_event_ch),
+ start_sec);
+ lan743x_csr_write(adapter,
+ PTP_CLOCK_TARGET_NS_X(ptp->perout_event_ch),
+ start_nsec);
+
+ return 0;
+
+failed:
+ lan743x_ptp_perout_off(adapter);
+ return -ENODEV;
+}
+
+static int lan743x_ptpci_enable(struct ptp_clock_info *ptpci,
+ struct ptp_clock_request *request, int on)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+
+ if (request) {
+ switch (request->type) {
+ case PTP_CLK_REQ_EXTTS:
+ return -EINVAL;
+ case PTP_CLK_REQ_PEROUT:
+ if (request->perout.index == 0)
+ return lan743x_ptp_perout(adapter, on,
+ &request->perout);
+ return -EINVAL;
+ case PTP_CLK_REQ_PPS:
+ return -EINVAL;
+ default:
+ netif_err(adapter, drv, adapter->netdev,
+ "request->type == %d, Unknown\n",
+ request->type);
+ break;
+ }
+ } else {
+ netif_err(adapter, drv, adapter->netdev, "request == NULL\n");
+ }
+ return 0;
+}
+
+static long lan743x_ptpci_do_aux_work(struct ptp_clock_info *ptpci)
+{
+ struct lan743x_ptp *ptp =
+ container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+ struct lan743x_adapter *adapter =
+ container_of(ptp, struct lan743x_adapter, ptp);
+ u32 cap_info, cause, header, nsec, seconds;
+ bool new_timestamp_available = false;
+ int count = 0;
+
+ while ((count < 100) &&
+ (lan743x_csr_read(adapter, PTP_INT_STS) & PTP_INT_BIT_TX_TS_)) {
+ count++;
+ cap_info = lan743x_csr_read(adapter, PTP_CAP_INFO);
+
+ if (PTP_CAP_INFO_TX_TS_CNT_GET_(cap_info) > 0) {
+ seconds = lan743x_csr_read(adapter,
+ PTP_TX_EGRESS_SEC);
+ nsec = lan743x_csr_read(adapter, PTP_TX_EGRESS_NS);
+ cause = (nsec &
+ PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_);
+ header = lan743x_csr_read(adapter,
+ PTP_TX_MSG_HEADER);
+
+ if (cause == PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_) {
+ nsec &= PTP_TX_EGRESS_NS_TS_NS_MASK_;
+ lan743x_ptp_tx_ts_enqueue_ts(adapter,
+ seconds, nsec,
+ header);
+ new_timestamp_available = true;
+ } else if (cause ==
+ PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_) {
+ netif_err(adapter, drv, adapter->netdev,
+ "Auto capture cause not supported\n");
+ } else {
+ netif_warn(adapter, drv, adapter->netdev,
+ "unknown tx timestamp capture cause\n");
+ }
+ } else {
+ netif_warn(adapter, drv, adapter->netdev,
+ "TX TS INT but no TX TS CNT\n");
+ }
+ lan743x_csr_write(adapter, PTP_INT_STS, PTP_INT_BIT_TX_TS_);
+ }
+
+ if (new_timestamp_available)
+ lan743x_ptp_tx_ts_complete(adapter);
+
+ lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+
+ return -1;
+}
+
+static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
+ u32 *seconds, u32 *nano_seconds,
+ u32 *sub_nano_seconds)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+
+ lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_);
+ lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_);
+
+ if (seconds)
+ (*seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SEC);
+
+ if (nano_seconds)
+ (*nano_seconds) = lan743x_csr_read(adapter, PTP_CLOCK_NS);
+
+ if (sub_nano_seconds)
+ (*sub_nano_seconds) =
+ lan743x_csr_read(adapter, PTP_CLOCK_SUBNS);
+
+ mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
+ s64 time_step_ns)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ u32 nano_seconds_step = 0;
+ u64 abs_time_step_ns = 0;
+ u32 unsigned_seconds = 0;
+ u32 nano_seconds = 0;
+ u32 remainder = 0;
+ s32 seconds = 0;
+
+ if (time_step_ns > 15000000000LL) {
+ /* convert to clock set */
+ lan743x_ptp_clock_get(adapter, &unsigned_seconds,
+ &nano_seconds, NULL);
+ unsigned_seconds += div_u64_rem(time_step_ns, 1000000000LL,
+ &remainder);
+ nano_seconds += remainder;
+ if (nano_seconds >= 1000000000) {
+ unsigned_seconds++;
+ nano_seconds -= 1000000000;
+ }
+ lan743x_ptp_clock_set(adapter, unsigned_seconds,
+ nano_seconds, 0);
+ return;
+ } else if (time_step_ns < -15000000000LL) {
+ /* convert to clock set */
+ time_step_ns = -time_step_ns;
+
+ lan743x_ptp_clock_get(adapter, &unsigned_seconds,
+ &nano_seconds, NULL);
+ unsigned_seconds -= div_u64_rem(time_step_ns, 1000000000LL,
+ &remainder);
+ nano_seconds_step = remainder;
+ if (nano_seconds < nano_seconds_step) {
+ unsigned_seconds--;
+ nano_seconds += 1000000000;
+ }
+ nano_seconds -= nano_seconds_step;
+ lan743x_ptp_clock_set(adapter, unsigned_seconds,
+ nano_seconds, 0);
+ return;
+ }
+
+ /* do clock step */
+ if (time_step_ns >= 0) {
+ abs_time_step_ns = (u64)(time_step_ns);
+ seconds = (s32)div_u64_rem(abs_time_step_ns, 1000000000,
+ &remainder);
+ nano_seconds = (u32)remainder;
+ } else {
+ abs_time_step_ns = (u64)(-time_step_ns);
+ seconds = -((s32)div_u64_rem(abs_time_step_ns, 1000000000,
+ &remainder));
+ nano_seconds = (u32)remainder;
+ if (nano_seconds > 0) {
+ /* subtracting nano seconds is not allowed
+ * convert to subtracting from seconds,
+ * and adding to nanoseconds
+ */
+ seconds--;
+ nano_seconds = (1000000000 - nano_seconds);
+ }
+ }
+
+ if (nano_seconds > 0) {
+ /* add 8 ns to cover the likely normal increment */
+ nano_seconds += 8;
+ }
+
+ if (nano_seconds >= 1000000000) {
+ /* carry into seconds */
+ seconds++;
+ nano_seconds -= 1000000000;
+ }
+
+ while (seconds) {
+ mutex_lock(&ptp->command_lock);
+ if (seconds > 0) {
+ u32 adjustment_value = (u32)seconds;
+
+ if (adjustment_value > 0xF)
+ adjustment_value = 0xF;
+ lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+ PTP_CLOCK_STEP_ADJ_DIR_ |
+ adjustment_value);
+ seconds -= ((s32)adjustment_value);
+ } else {
+ u32 adjustment_value = (u32)(-seconds);
+
+ if (adjustment_value > 0xF)
+ adjustment_value = 0xF;
+ lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+ adjustment_value);
+ seconds += ((s32)adjustment_value);
+ }
+ lan743x_csr_write(adapter, PTP_CMD_CTL,
+ PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
+ lan743x_ptp_wait_till_cmd_done(adapter,
+ PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
+ mutex_unlock(&ptp->command_lock);
+ }
+ if (nano_seconds) {
+ mutex_lock(&ptp->command_lock);
+ lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+ PTP_CLOCK_STEP_ADJ_DIR_ |
+ (nano_seconds &
+ PTP_CLOCK_STEP_ADJ_VALUE_MASK_));
+ lan743x_csr_write(adapter, PTP_CMD_CTL,
+ PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
+ lan743x_ptp_wait_till_cmd_done(adapter,
+ PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
+ mutex_unlock(&ptp->command_lock);
+ }
+}
+#endif /* CONFIG_PTP_1588_CLOCK */
+
+void lan743x_ptp_isr(void *context)
+{
+ struct lan743x_adapter *adapter = (struct lan743x_adapter *)context;
+ struct lan743x_ptp *ptp = NULL;
+ int enable_flag = 1;
+ u32 ptp_int_sts = 0;
+
+ ptp = &adapter->ptp;
+
+ lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
+
+ ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
+ ptp_int_sts &= lan743x_csr_read(adapter, PTP_INT_EN_SET);
+
+ if (ptp_int_sts & PTP_INT_BIT_TX_TS_) {
+ ptp_schedule_worker(ptp->ptp_clock, 0);
+ enable_flag = 0;/* tasklet will re-enable later */
+ }
+ if (ptp_int_sts & PTP_INT_BIT_TX_SWTS_ERR_) {
+ netif_err(adapter, drv, adapter->netdev,
+ "PTP TX Software Timestamp Error\n");
+ /* clear int status bit */
+ lan743x_csr_write(adapter, PTP_INT_STS,
+ PTP_INT_BIT_TX_SWTS_ERR_);
+ }
+ if (ptp_int_sts & PTP_INT_BIT_TIMER_B_) {
+ /* clear int status bit */
+ lan743x_csr_write(adapter, PTP_INT_STS,
+ PTP_INT_BIT_TIMER_B_);
+ }
+ if (ptp_int_sts & PTP_INT_BIT_TIMER_A_) {
+ /* clear int status bit */
+ lan743x_csr_write(adapter, PTP_INT_STS,
+ PTP_INT_BIT_TIMER_A_);
+ }
+
+ if (enable_flag) {
+ /* re-enable isr */
+ lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+ }
+}
+
+static void lan743x_ptp_tx_ts_enqueue_skb(struct lan743x_adapter *adapter,
+ struct sk_buff *skb, bool ignore_sync)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ spin_lock_bh(&ptp->tx_ts_lock);
+ if (ptp->tx_ts_skb_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+ ptp->tx_ts_skb_queue[ptp->tx_ts_skb_queue_size] = skb;
+ if (ignore_sync)
+ ptp->tx_ts_ignore_sync_queue |=
+ BIT(ptp->tx_ts_skb_queue_size);
+ ptp->tx_ts_skb_queue_size++;
+ } else {
+ /* this should never happen, so long as the tx channel
+ * calls and honors the result from
+ * lan743x_ptp_request_tx_timestamp
+ */
+ netif_err(adapter, drv, adapter->netdev,
+ "tx ts skb queue overflow\n");
+ dev_kfree_skb(skb);
+ }
+ spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+static void lan743x_ptp_sync_to_system_clock(struct lan743x_adapter *adapter)
+{
+ struct timespec64 ts;
+
+ memset(&ts, 0, sizeof(ts));
+ timekeeping_clocktai64(&ts);
+
+ lan743x_ptp_clock_set(adapter, ts.tv_sec, ts.tv_nsec, 0);
+}
+
+void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
+ u32 link_speed)
+{
+ switch (link_speed) {
+ case 10:
+ lan743x_csr_write(adapter, PTP_LATENCY,
+ PTP_LATENCY_TX_SET_(0) |
+ PTP_LATENCY_RX_SET_(0));
+ break;
+ case 100:
+ lan743x_csr_write(adapter, PTP_LATENCY,
+ PTP_LATENCY_TX_SET_(181) |
+ PTP_LATENCY_RX_SET_(594));
+ break;
+ case 1000:
+ lan743x_csr_write(adapter, PTP_LATENCY,
+ PTP_LATENCY_TX_SET_(30) |
+ PTP_LATENCY_RX_SET_(525));
+ break;
+ }
+}
+
+int lan743x_ptp_init(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_init(&ptp->command_lock);
+ spin_lock_init(&ptp->tx_ts_lock);
+ ptp->used_event_ch = 0;
+ ptp->perout_event_ch = -1;
+ ptp->perout_gpio_bit = -1;
+ return 0;
+}
+
+int lan743x_ptp_open(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ int ret = -ENODEV;
+ u32 temp;
+
+ lan743x_ptp_reset(adapter);
+ lan743x_ptp_sync_to_system_clock(adapter);
+ temp = lan743x_csr_read(adapter, PTP_TX_MOD2);
+ temp |= PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_;
+ lan743x_csr_write(adapter, PTP_TX_MOD2, temp);
+ lan743x_ptp_enable(adapter);
+ lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+ lan743x_csr_write(adapter, PTP_INT_EN_SET,
+ PTP_INT_BIT_TX_SWTS_ERR_ | PTP_INT_BIT_TX_TS_);
+ ptp->flags |= PTP_FLAG_ISR_ENABLED;
+
+#ifdef CONFIG_PTP_1588_CLOCK
+ snprintf(ptp->pin_config[0].name, 32, "lan743x_ptp_pin_0");
+ ptp->pin_config[0].index = 0;
+ ptp->pin_config[0].func = PTP_PF_PEROUT;
+ ptp->pin_config[0].chan = 0;
+
+ ptp->ptp_clock_info.owner = THIS_MODULE;
+ snprintf(ptp->ptp_clock_info.name, 16, "%pm",
+ adapter->netdev->dev_addr);
+ ptp->ptp_clock_info.max_adj = LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB;
+ ptp->ptp_clock_info.n_alarm = 0;
+ ptp->ptp_clock_info.n_ext_ts = 0;
+ ptp->ptp_clock_info.n_per_out = 1;
+ ptp->ptp_clock_info.n_pins = 0;
+ ptp->ptp_clock_info.pps = 0;
+ ptp->ptp_clock_info.pin_config = NULL;
+ ptp->ptp_clock_info.adjfine = lan743x_ptpci_adjfine;
+ ptp->ptp_clock_info.adjfreq = lan743x_ptpci_adjfreq;
+ ptp->ptp_clock_info.adjtime = lan743x_ptpci_adjtime;
+ ptp->ptp_clock_info.gettime64 = lan743x_ptpci_gettime64;
+ ptp->ptp_clock_info.getcrosststamp = NULL;
+ ptp->ptp_clock_info.settime64 = lan743x_ptpci_settime64;
+ ptp->ptp_clock_info.enable = lan743x_ptpci_enable;
+ ptp->ptp_clock_info.do_aux_work = lan743x_ptpci_do_aux_work;
+ ptp->ptp_clock_info.verify = NULL;
+
+ ptp->ptp_clock = ptp_clock_register(&ptp->ptp_clock_info,
+ &adapter->pdev->dev);
+
+ if (IS_ERR(ptp->ptp_clock)) {
+ netif_err(adapter, ifup, adapter->netdev,
+ "ptp_clock_register failed\n");
+ goto done;
+ }
+ ptp->flags |= PTP_FLAG_PTP_CLOCK_REGISTERED;
+ netif_info(adapter, ifup, adapter->netdev,
+ "successfully registered ptp clock\n");
+
+ return 0;
+done:
+ lan743x_ptp_close(adapter);
+ return ret;
+#else
+ return 0;
+#endif
+}
+
+void lan743x_ptp_close(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ int index;
+
+#ifdef CONFIG_PTP_1588_CLOCK
+ if (ptp->flags & PTP_FLAG_PTP_CLOCK_REGISTERED) {
+ ptp_clock_unregister(ptp->ptp_clock);
+ ptp->ptp_clock = NULL;
+ ptp->flags &= ~PTP_FLAG_PTP_CLOCK_REGISTERED;
+ netif_info(adapter, drv, adapter->netdev,
+ "ptp clock unregister\n");
+ }
+#endif
+
+ if (ptp->flags & PTP_FLAG_ISR_ENABLED) {
+ lan743x_csr_write(adapter, PTP_INT_EN_CLR,
+ PTP_INT_BIT_TX_SWTS_ERR_ |
+ PTP_INT_BIT_TX_TS_);
+ lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
+ ptp->flags &= ~PTP_FLAG_ISR_ENABLED;
+ }
+
+ /* clean up pending timestamp requests */
+ lan743x_ptp_tx_ts_complete(adapter);
+ spin_lock_bh(&ptp->tx_ts_lock);
+ for (index = 0;
+ index < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS;
+ index++) {
+ struct sk_buff *skb = ptp->tx_ts_skb_queue[index];
+
+ if (skb)
+ dev_kfree_skb(skb);
+ ptp->tx_ts_skb_queue[index] = NULL;
+ ptp->tx_ts_seconds_queue[index] = 0;
+ ptp->tx_ts_nseconds_queue[index] = 0;
+ }
+ ptp->tx_ts_skb_queue_size = 0;
+ ptp->tx_ts_queue_size = 0;
+ ptp->pending_tx_timestamps = 0;
+ spin_unlock_bh(&ptp->tx_ts_lock);
+
+ lan743x_ptp_disable(adapter);
+}
+
+void lan743x_ptp_set_sync_ts_insert(struct lan743x_adapter *adapter,
+ bool ts_insert_enable)
+{
+ u32 ptp_tx_mod = lan743x_csr_read(adapter, PTP_TX_MOD);
+
+ if (ts_insert_enable)
+ ptp_tx_mod |= PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
+ else
+ ptp_tx_mod &= ~PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
+
+ lan743x_csr_write(adapter, PTP_TX_MOD, ptp_tx_mod);
+}
+
+static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter)
+{
+ if (lan743x_csr_read(adapter, PTP_CMD_CTL) & PTP_CMD_CTL_PTP_ENABLE_)
+ return true;
+ return false;
+}
+
+static void lan743x_ptp_enable(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+
+ if (lan743x_ptp_is_enabled(adapter)) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "PTP already enabled\n");
+ goto done;
+ }
+ lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_ENABLE_);
+done:
+ mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_disable(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+ if (!lan743x_ptp_is_enabled(adapter)) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "PTP already disabled\n");
+ goto done;
+ }
+ lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_DISABLE_);
+ lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_ENABLE_);
+done:
+ mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_reset(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+
+ if (lan743x_ptp_is_enabled(adapter)) {
+ netif_err(adapter, drv, adapter->netdev,
+ "Attempting reset while enabled\n");
+ goto done;
+ }
+
+ lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_RESET_);
+ lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_RESET_);
+done:
+ mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
+ u32 seconds, u32 nano_seconds,
+ u32 sub_nano_seconds)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ mutex_lock(&ptp->command_lock);
+
+ lan743x_csr_write(adapter, PTP_CLOCK_SEC, seconds);
+ lan743x_csr_write(adapter, PTP_CLOCK_NS, nano_seconds);
+ lan743x_csr_write(adapter, PTP_CLOCK_SUBNS, sub_nano_seconds);
+
+ lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
+ lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
+ mutex_unlock(&ptp->command_lock);
+}
+
+bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+ bool result = false;
+
+ spin_lock_bh(&ptp->tx_ts_lock);
+ if (ptp->pending_tx_timestamps < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+ /* request granted */
+ ptp->pending_tx_timestamps++;
+ result = true;
+ }
+ spin_unlock_bh(&ptp->tx_ts_lock);
+ return result;
+}
+
+void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter)
+{
+ struct lan743x_ptp *ptp = &adapter->ptp;
+
+ spin_lock_bh(&ptp->tx_ts_lock);
+ if (ptp->pending_tx_timestamps > 0)
+ ptp->pending_tx_timestamps--;
+ else
+ netif_err(adapter, drv, adapter->netdev,
+ "unrequest failed, pending_tx_timestamps==0\n");
+ spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
+ struct sk_buff *skb, bool ignore_sync)
+{
+ lan743x_ptp_tx_ts_enqueue_skb(adapter, skb, ignore_sync);
+
+ lan743x_ptp_tx_ts_complete(adapter);
+}
+
+int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct lan743x_adapter *adapter = netdev_priv(netdev);
+ struct hwtstamp_config config;
+ int ret = 0;
+ int index;
+
+ if (!ifr) {
+ netif_err(adapter, drv, adapter->netdev,
+ "SIOCSHWTSTAMP, ifr == NULL\n");
+ return -EINVAL;
+ }
+
+ if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+ return -EFAULT;
+
+ if (config.flags) {
+ netif_warn(adapter, drv, adapter->netdev,
+ "ignoring hwtstamp_config.flags == 0x%08X, expected 0\n",
+ config.flags);
+ }
+
+ switch (config.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ for (index = 0; index < LAN743X_MAX_TX_CHANNELS;
+ index++)
+ lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+ false, false);
+ lan743x_ptp_set_sync_ts_insert(adapter, false);
+ break;
+ case HWTSTAMP_TX_ON:
+ for (index = 0; index < LAN743X_MAX_TX_CHANNELS;
+ index++)
+ lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+ true, false);
+ lan743x_ptp_set_sync_ts_insert(adapter, false);
+ break;
+ case HWTSTAMP_TX_ONESTEP_SYNC:
+ for (index = 0; index < LAN743X_MAX_TX_CHANNELS;
+ index++)
+ lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+ true, true);
+
+ lan743x_ptp_set_sync_ts_insert(adapter, true);
+ break;
+ default:
+ netif_warn(adapter, drv, adapter->netdev,
+ " tx_type = %d, UNKNOWN\n", config.tx_type);
+ ret = -EINVAL;
+ break;
+ }
+
+ if (!ret)
+ return copy_to_user(ifr->ifr_data, &config,
+ sizeof(config)) ? -EFAULT : 0;
+ return ret;
+}
diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.h b/drivers/net/ethernet/microchip/lan743x_ptp.h
new file mode 100644
index 0000000..20f2223
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan743x_ptp.h
@@ -0,0 +1,76 @@
+/* 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"
+
+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 {
+ int flags;
+
+ /* command_lock: used to prevent concurrent ptp commands */
+ struct mutex command_lock;
+
+#ifdef CONFIG_PTP_1588_CLOCK
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info ptp_clock_info;
+ struct ptp_pin_desc pin_config[1];
+#endif /* CONFIG_PTP_1588_CLOCK */
+
+#define LAN743X_PTP_NUMBER_OF_EVENT_CHANNELS (2)
+ unsigned long used_event_ch;
+
+ int perout_event_ch;
+ int perout_gpio_bit;
+
+ /* 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 */
--
2.7.4
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