diff options
Diffstat (limited to 'drivers/net/ethernet/microchip')
| -rw-r--r-- | drivers/net/ethernet/microchip/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ethtool.c | 723 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ethtool.h | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.c | 284 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.h | 234 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ptp.c | 1159 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ptp.h | 74 |
8 files changed, 2479 insertions, 9 deletions
diff --git a/drivers/net/ethernet/microchip/Kconfig b/drivers/net/ethernet/microchip/Kconfig index 71dca8bd51ac..16bd3f44dbe8 100644 --- a/drivers/net/ethernet/microchip/Kconfig +++ b/drivers/net/ethernet/microchip/Kconfig @@ -46,6 +46,7 @@ config LAN743X tristate "LAN743x support" depends on PCI select PHYLIB + select CRC16 ---help--- Support for the Microchip LAN743x PCI Express Gigabit Ethernet chip diff --git a/drivers/net/ethernet/microchip/Makefile b/drivers/net/ethernet/microchip/Makefile index 2e982cc249fb..538926d2b43f 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-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 new file mode 100644 index 000000000000..07c1eb63415a --- /dev/null +++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c @@ -0,0 +1,723 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (C) 2018 Microchip Technology Inc. */ + +#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> + +/* eeprom */ +#define LAN743X_EEPROM_MAGIC (0x74A5) +#define LAN743X_OTP_MAGIC (0x74F3) +#define EEPROM_INDICATOR_1 (0xA5) +#define EEPROM_INDICATOR_2 (0xAA) +#define EEPROM_MAC_OFFSET (0x01) +#define MAX_EEPROM_SIZE 512 +#define OTP_INDICATOR_1 (0xF3) +#define OTP_INDICATOR_2 (0xF7) + +static int lan743x_otp_write(struct lan743x_adapter *adapter, u32 offset, + u32 length, u8 *data) +{ + unsigned long timeout; + u32 buf; + int i; + + buf = lan743x_csr_read(adapter, OTP_PWR_DN); + + if (buf & OTP_PWR_DN_PWRDN_N_) { + /* clear it and wait to be cleared */ + lan743x_csr_write(adapter, OTP_PWR_DN, 0); + + timeout = jiffies + HZ; + do { + udelay(1); + buf = lan743x_csr_read(adapter, OTP_PWR_DN); + if (time_after(jiffies, timeout)) { + netif_warn(adapter, drv, adapter->netdev, + "timeout on OTP_PWR_DN completion\n"); + return -EIO; + } + } while (buf & OTP_PWR_DN_PWRDN_N_); + } + + /* set to BYTE program mode */ + lan743x_csr_write(adapter, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); + + for (i = 0; i < length; i++) { + lan743x_csr_write(adapter, OTP_ADDR1, + ((offset + i) >> 8) & + OTP_ADDR1_15_11_MASK_); + lan743x_csr_write(adapter, OTP_ADDR2, + ((offset + i) & + OTP_ADDR2_10_3_MASK_)); + lan743x_csr_write(adapter, OTP_PRGM_DATA, data[i]); + lan743x_csr_write(adapter, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); + lan743x_csr_write(adapter, OTP_CMD_GO, OTP_CMD_GO_GO_); + + timeout = jiffies + HZ; + do { + udelay(1); + buf = lan743x_csr_read(adapter, OTP_STATUS); + if (time_after(jiffies, timeout)) { + netif_warn(adapter, drv, adapter->netdev, + "Timeout on OTP_STATUS completion\n"); + return -EIO; + } + } while (buf & OTP_STATUS_BUSY_); + } + + return 0; +} + +static int lan743x_eeprom_wait(struct lan743x_adapter *adapter) +{ + unsigned long start_time = jiffies; + u32 val; + + do { + val = lan743x_csr_read(adapter, E2P_CMD); + + if (!(val & E2P_CMD_EPC_BUSY_) || + (val & E2P_CMD_EPC_TIMEOUT_)) + break; + usleep_range(40, 100); + } while (!time_after(jiffies, start_time + HZ)); + + if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { + netif_warn(adapter, drv, adapter->netdev, + "EEPROM read operation timeout\n"); + return -EIO; + } + + return 0; +} + +static int lan743x_eeprom_confirm_not_busy(struct lan743x_adapter *adapter) +{ + unsigned long start_time = jiffies; + u32 val; + + do { + val = lan743x_csr_read(adapter, E2P_CMD); + + if (!(val & E2P_CMD_EPC_BUSY_)) + return 0; + + usleep_range(40, 100); + } while (!time_after(jiffies, start_time + HZ)); + + netif_warn(adapter, drv, adapter->netdev, "EEPROM is busy\n"); + return -EIO; +} + +static int lan743x_eeprom_read(struct lan743x_adapter *adapter, + u32 offset, u32 length, u8 *data) +{ + int retval; + u32 val; + int i; + + retval = lan743x_eeprom_confirm_not_busy(adapter); + if (retval) + return retval; + + for (i = 0; i < length; i++) { + val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; + val |= (offset & E2P_CMD_EPC_ADDR_MASK_); + lan743x_csr_write(adapter, E2P_CMD, val); + + retval = lan743x_eeprom_wait(adapter); + if (retval < 0) + return retval; + + val = lan743x_csr_read(adapter, E2P_DATA); + data[i] = val & 0xFF; + offset++; + } + + return 0; +} + +static int lan743x_eeprom_write(struct lan743x_adapter *adapter, + u32 offset, u32 length, u8 *data) +{ + int retval; + u32 val; + int i; + + retval = lan743x_eeprom_confirm_not_busy(adapter); + if (retval) + return retval; + + /* Issue write/erase enable command */ + val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; + lan743x_csr_write(adapter, E2P_CMD, val); + + retval = lan743x_eeprom_wait(adapter); + if (retval < 0) + return retval; + + for (i = 0; i < length; i++) { + /* Fill data register */ + val = data[i]; + lan743x_csr_write(adapter, E2P_DATA, val); + + /* Send "write" command */ + val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; + val |= (offset & E2P_CMD_EPC_ADDR_MASK_); + lan743x_csr_write(adapter, E2P_CMD, val); + + retval = lan743x_eeprom_wait(adapter); + if (retval < 0) + return retval; + + offset++; + } + + return 0; +} + +static void lan743x_ethtool_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *info) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver)); + strlcpy(info->bus_info, + pci_name(adapter->pdev), sizeof(info->bus_info)); +} + +static u32 lan743x_ethtool_get_msglevel(struct net_device *netdev) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + return adapter->msg_enable; +} + +static void lan743x_ethtool_set_msglevel(struct net_device *netdev, + u32 msglevel) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + adapter->msg_enable = msglevel; +} + +static int lan743x_ethtool_get_eeprom_len(struct net_device *netdev) +{ + return MAX_EEPROM_SIZE; +} + +static int lan743x_ethtool_get_eeprom(struct net_device *netdev, + struct ethtool_eeprom *ee, u8 *data) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + return lan743x_eeprom_read(adapter, ee->offset, ee->len, data); +} + +static int lan743x_ethtool_set_eeprom(struct net_device *netdev, + struct ethtool_eeprom *ee, u8 *data) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + int ret = -EINVAL; + + if (ee->magic == LAN743X_EEPROM_MAGIC) + ret = lan743x_eeprom_write(adapter, ee->offset, ee->len, + data); + /* Beware! OTP is One Time Programming ONLY! + * So do some strict condition check before messing up + */ + else if ((ee->magic == LAN743X_OTP_MAGIC) && + (ee->offset == 0) && + (ee->len == MAX_EEPROM_SIZE) && + (data[0] == OTP_INDICATOR_1)) + ret = lan743x_otp_write(adapter, ee->offset, ee->len, data); + + return ret; +} + +static const char lan743x_set0_hw_cnt_strings[][ETH_GSTRING_LEN] = { + "RX FCS Errors", + "RX Alignment Errors", + "Rx Fragment Errors", + "RX Jabber Errors", + "RX Undersize Frame Errors", + "RX Oversize Frame Errors", + "RX Dropped Frames", + "RX Unicast Byte Count", + "RX Broadcast Byte Count", + "RX Multicast Byte Count", + "RX Unicast Frames", + "RX Broadcast Frames", + "RX Multicast Frames", + "RX Pause Frames", + "RX 64 Byte Frames", + "RX 65 - 127 Byte Frames", + "RX 128 - 255 Byte Frames", + "RX 256 - 511 Bytes Frames", + "RX 512 - 1023 Byte Frames", + "RX 1024 - 1518 Byte Frames", + "RX Greater 1518 Byte Frames", +}; + +static const char lan743x_set1_sw_cnt_strings[][ETH_GSTRING_LEN] = { + "RX Queue 0 Frames", + "RX Queue 1 Frames", + "RX Queue 2 Frames", + "RX Queue 3 Frames", +}; + +static const char lan743x_set2_hw_cnt_strings[][ETH_GSTRING_LEN] = { + "RX Total Frames", + "EEE RX LPI Transitions", + "EEE RX LPI Time", + "RX Counter Rollover Status", + "TX FCS Errors", + "TX Excess Deferral Errors", + "TX Carrier Errors", + "TX Bad Byte Count", + "TX Single Collisions", + "TX Multiple Collisions", + "TX Excessive Collision", + "TX Late Collisions", + "TX Unicast Byte Count", + "TX Broadcast Byte Count", + "TX Multicast Byte Count", + "TX Unicast Frames", + "TX Broadcast Frames", + "TX Multicast Frames", + "TX Pause Frames", + "TX 64 Byte Frames", + "TX 65 - 127 Byte Frames", + "TX 128 - 255 Byte Frames", + "TX 256 - 511 Bytes Frames", + "TX 512 - 1023 Byte Frames", + "TX 1024 - 1518 Byte Frames", + "TX Greater 1518 Byte Frames", + "TX Total Frames", + "EEE TX LPI Transitions", + "EEE TX LPI Time", + "TX Counter Rollover Status", +}; + +static const u32 lan743x_set0_hw_cnt_addr[] = { + STAT_RX_FCS_ERRORS, + STAT_RX_ALIGNMENT_ERRORS, + STAT_RX_FRAGMENT_ERRORS, + STAT_RX_JABBER_ERRORS, + STAT_RX_UNDERSIZE_FRAME_ERRORS, + STAT_RX_OVERSIZE_FRAME_ERRORS, + STAT_RX_DROPPED_FRAMES, + STAT_RX_UNICAST_BYTE_COUNT, + STAT_RX_BROADCAST_BYTE_COUNT, + STAT_RX_MULTICAST_BYTE_COUNT, + STAT_RX_UNICAST_FRAMES, + STAT_RX_BROADCAST_FRAMES, + STAT_RX_MULTICAST_FRAMES, + STAT_RX_PAUSE_FRAMES, + STAT_RX_64_BYTE_FRAMES, + STAT_RX_65_127_BYTE_FRAMES, + STAT_RX_128_255_BYTE_FRAMES, + STAT_RX_256_511_BYTES_FRAMES, + STAT_RX_512_1023_BYTE_FRAMES, + STAT_RX_1024_1518_BYTE_FRAMES, + STAT_RX_GREATER_1518_BYTE_FRAMES, +}; + +static const u32 lan743x_set2_hw_cnt_addr[] = { + STAT_RX_TOTAL_FRAMES, + STAT_EEE_RX_LPI_TRANSITIONS, + STAT_EEE_RX_LPI_TIME, + STAT_RX_COUNTER_ROLLOVER_STATUS, + STAT_TX_FCS_ERRORS, + STAT_TX_EXCESS_DEFERRAL_ERRORS, + STAT_TX_CARRIER_ERRORS, + STAT_TX_BAD_BYTE_COUNT, + STAT_TX_SINGLE_COLLISIONS, + STAT_TX_MULTIPLE_COLLISIONS, + STAT_TX_EXCESSIVE_COLLISION, + STAT_TX_LATE_COLLISIONS, + STAT_TX_UNICAST_BYTE_COUNT, + STAT_TX_BROADCAST_BYTE_COUNT, + STAT_TX_MULTICAST_BYTE_COUNT, + STAT_TX_UNICAST_FRAMES, + STAT_TX_BROADCAST_FRAMES, + STAT_TX_MULTICAST_FRAMES, + STAT_TX_PAUSE_FRAMES, + STAT_TX_64_BYTE_FRAMES, + STAT_TX_65_127_BYTE_FRAMES, + STAT_TX_128_255_BYTE_FRAMES, + STAT_TX_256_511_BYTES_FRAMES, + STAT_TX_512_1023_BYTE_FRAMES, + STAT_TX_1024_1518_BYTE_FRAMES, + STAT_TX_GREATER_1518_BYTE_FRAMES, + STAT_TX_TOTAL_FRAMES, + STAT_EEE_TX_LPI_TRANSITIONS, + STAT_EEE_TX_LPI_TIME, + STAT_TX_COUNTER_ROLLOVER_STATUS +}; + +static void lan743x_ethtool_get_strings(struct net_device *netdev, + u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, lan743x_set0_hw_cnt_strings, + sizeof(lan743x_set0_hw_cnt_strings)); + memcpy(&data[sizeof(lan743x_set0_hw_cnt_strings)], + lan743x_set1_sw_cnt_strings, + sizeof(lan743x_set1_sw_cnt_strings)); + memcpy(&data[sizeof(lan743x_set0_hw_cnt_strings) + + sizeof(lan743x_set1_sw_cnt_strings)], + lan743x_set2_hw_cnt_strings, + sizeof(lan743x_set2_hw_cnt_strings)); + break; + } +} + +static void lan743x_ethtool_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, + u64 *data) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + int data_index = 0; + u32 buf; + int i; + + for (i = 0; i < ARRAY_SIZE(lan743x_set0_hw_cnt_addr); i++) { + buf = lan743x_csr_read(adapter, lan743x_set0_hw_cnt_addr[i]); + data[data_index++] = (u64)buf; + } + for (i = 0; i < ARRAY_SIZE(adapter->rx); i++) + data[data_index++] = (u64)(adapter->rx[i].frame_count); + for (i = 0; i < ARRAY_SIZE(lan743x_set2_hw_cnt_addr); i++) { + buf = lan743x_csr_read(adapter, lan743x_set2_hw_cnt_addr[i]); + data[data_index++] = (u64)buf; + } +} + +static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + { + int ret; + + ret = ARRAY_SIZE(lan743x_set0_hw_cnt_strings); + ret += ARRAY_SIZE(lan743x_set1_sw_cnt_strings); + ret += ARRAY_SIZE(lan743x_set2_hw_cnt_strings); + return ret; + } + default: + return -EOPNOTSUPP; + } +} + +static int lan743x_ethtool_get_rxnfc(struct net_device *netdev, + struct ethtool_rxnfc *rxnfc, + u32 *rule_locs) +{ + switch (rxnfc->cmd) { + case ETHTOOL_GRXFH: + rxnfc->data = 0; + switch (rxnfc->flow_type) { + case TCP_V4_FLOW:case UDP_V4_FLOW: + case TCP_V6_FLOW:case UDP_V6_FLOW: + rxnfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; + /* fall through */ + case IPV4_FLOW: case IPV6_FLOW: + rxnfc->data |= RXH_IP_SRC | RXH_IP_DST; + return 0; + } + break; + case ETHTOOL_GRXRINGS: + rxnfc->data = LAN743X_USED_RX_CHANNELS; + return 0; + } + return -EOPNOTSUPP; +} + +static u32 lan743x_ethtool_get_rxfh_key_size(struct net_device *netdev) +{ + return 40; +} + +static u32 lan743x_ethtool_get_rxfh_indir_size(struct net_device *netdev) +{ + return 128; +} + +static int lan743x_ethtool_get_rxfh(struct net_device *netdev, + u32 *indir, u8 *key, u8 *hfunc) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + if (indir) { + int dw_index; + int byte_index = 0; + + for (dw_index = 0; dw_index < 32; dw_index++) { + u32 four_entries = + lan743x_csr_read(adapter, RFE_INDX(dw_index)); + + byte_index = dw_index << 2; + indir[byte_index + 0] = + ((four_entries >> 0) & 0x000000FF); + indir[byte_index + 1] = + ((four_entries >> 8) & 0x000000FF); + indir[byte_index + 2] = + ((four_entries >> 16) & 0x000000FF); + indir[byte_index + 3] = + ((four_entries >> 24) & 0x000000FF); + } + } + if (key) { + int dword_index; + int byte_index = 0; + + for (dword_index = 0; dword_index < 10; dword_index++) { + u32 four_entries = + lan743x_csr_read(adapter, + RFE_HASH_KEY(dword_index)); + + byte_index = dword_index << 2; + key[byte_index + 0] = + ((four_entries >> 0) & 0x000000FF); + key[byte_index + 1] = + ((four_entries >> 8) & 0x000000FF); + key[byte_index + 2] = + ((four_entries >> 16) & 0x000000FF); + key[byte_index + 3] = + ((four_entries >> 24) & 0x000000FF); + } + } + if (hfunc) + (*hfunc) = ETH_RSS_HASH_TOP; + return 0; +} + +static int lan743x_ethtool_set_rxfh(struct net_device *netdev, + const u32 *indir, const u8 *key, + const u8 hfunc) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) + return -EOPNOTSUPP; + + if (indir) { + u32 indir_value = 0; + int dword_index = 0; + int byte_index = 0; + + for (dword_index = 0; dword_index < 32; dword_index++) { + byte_index = dword_index << 2; + indir_value = + (((indir[byte_index + 0] & 0x000000FF) << 0) | + ((indir[byte_index + 1] & 0x000000FF) << 8) | + ((indir[byte_index + 2] & 0x000000FF) << 16) | + ((indir[byte_index + 3] & 0x000000FF) << 24)); + lan743x_csr_write(adapter, RFE_INDX(dword_index), + indir_value); + } + } + if (key) { + int dword_index = 0; + int byte_index = 0; + u32 key_value = 0; + + for (dword_index = 0; dword_index < 10; dword_index++) { + byte_index = dword_index << 2; + key_value = + ((((u32)(key[byte_index + 0])) << 0) | + (((u32)(key[byte_index + 1])) << 8) | + (((u32)(key[byte_index + 2])) << 16) | + (((u32)(key[byte_index + 3])) << 24)); + lan743x_csr_write(adapter, RFE_HASH_KEY(dword_index), + key_value); + } + } + 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) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = netdev->phydev; + u32 buf; + int ret; + + if (!phydev) + return -EIO; + if (!phydev->drv) { + netif_err(adapter, drv, adapter->netdev, + "Missing PHY Driver\n"); + return -EIO; + } + + ret = phy_ethtool_get_eee(phydev, eee); + if (ret < 0) + return ret; + + buf = lan743x_csr_read(adapter, MAC_CR); + if (buf & MAC_CR_EEE_EN_) { + eee->eee_enabled = true; + eee->eee_active = !!(eee->advertised & eee->lp_advertised); + eee->tx_lpi_enabled = true; + /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ + buf = lan743x_csr_read(adapter, MAC_EEE_TX_LPI_REQ_DLY_CNT); + eee->tx_lpi_timer = buf; + } else { + eee->eee_enabled = false; + eee->eee_active = false; + eee->tx_lpi_enabled = false; + eee->tx_lpi_timer = 0; + } + + return 0; +} + +static int lan743x_ethtool_set_eee(struct net_device *netdev, + struct ethtool_eee *eee) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = NULL; + u32 buf = 0; + int ret = 0; + + if (!netdev) + return -EINVAL; + adapter = netdev_priv(netdev); + if (!adapter) + return -EINVAL; + phydev = netdev->phydev; + if (!phydev) + return -EIO; + if (!phydev->drv) { + netif_err(adapter, drv, adapter->netdev, + "Missing PHY Driver\n"); + return -EIO; + } + + if (eee->eee_enabled) { + ret = phy_init_eee(phydev, 0); + if (ret) { + netif_err(adapter, drv, adapter->netdev, + "EEE initialization failed\n"); + return ret; + } + + buf = (u32)eee->tx_lpi_timer; + lan743x_csr_write(adapter, MAC_EEE_TX_LPI_REQ_DLY_CNT, buf); + + buf = lan743x_csr_read(adapter, MAC_CR); + buf |= MAC_CR_EEE_EN_; + lan743x_csr_write(adapter, MAC_CR, buf); + } else { + buf = lan743x_csr_read(adapter, MAC_CR); + buf &= ~MAC_CR_EEE_EN_; + lan743x_csr_write(adapter, MAC_CR, buf); + } + + return phy_ethtool_set_eee(phydev, eee); +} + +#ifdef CONFIG_PM +static void lan743x_ethtool_get_wol(struct net_device *netdev, + struct ethtool_wolinfo *wol) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + wol->supported = 0; + wol->wolopts = 0; + phy_ethtool_get_wol(netdev->phydev, wol); + + wol->supported |= WAKE_BCAST | WAKE_UCAST | WAKE_MCAST | + WAKE_MAGIC | WAKE_PHY | WAKE_ARP; + + wol->wolopts |= adapter->wolopts; +} + +static int lan743x_ethtool_set_wol(struct net_device *netdev, + struct ethtool_wolinfo *wol) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + + adapter->wolopts = 0; + if (wol->wolopts & WAKE_UCAST) + adapter->wolopts |= WAKE_UCAST; + if (wol->wolopts & WAKE_MCAST) + adapter->wolopts |= WAKE_MCAST; + if (wol->wolopts & WAKE_BCAST) + adapter->wolopts |= WAKE_BCAST; + if (wol->wolopts & WAKE_MAGIC) + adapter->wolopts |= WAKE_MAGIC; + if (wol->wolopts & WAKE_PHY) + adapter->wolopts |= WAKE_PHY; + if (wol->wolopts & WAKE_ARP) + adapter->wolopts |= WAKE_ARP; + + device_set_wakeup_enable(&adapter->pdev->dev, (bool)wol->wolopts); + + phy_ethtool_set_wol(netdev->phydev, wol); + + return 0; +} +#endif /* CONFIG_PM */ + +const struct ethtool_ops lan743x_ethtool_ops = { + .get_drvinfo = lan743x_ethtool_get_drvinfo, + .get_msglevel = lan743x_ethtool_get_msglevel, + .set_msglevel = lan743x_ethtool_set_msglevel, + .get_link = ethtool_op_get_link, + + .get_eeprom_len = lan743x_ethtool_get_eeprom_len, + .get_eeprom = lan743x_ethtool_get_eeprom, + .set_eeprom = lan743x_ethtool_set_eeprom, + .get_strings = lan743x_ethtool_get_strings, + .get_ethtool_stats = lan743x_ethtool_get_ethtool_stats, + .get_sset_count = lan743x_ethtool_get_sset_count, + .get_rxnfc = lan743x_ethtool_get_rxnfc, + .get_rxfh_key_size = lan743x_ethtool_get_rxfh_key_size, + .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, + .set_link_ksettings = phy_ethtool_set_link_ksettings, +#ifdef CONFIG_PM + .get_wol = lan743x_ethtool_get_wol, + .set_wol = lan743x_ethtool_set_wol, +#endif +}; diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.h b/drivers/net/ethernet/microchip/lan743x_ethtool.h new file mode 100644 index 000000000000..d0d11a777a58 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan743x_ethtool.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (C) 2018 Microchip Technology Inc. */ + +#ifndef _LAN743X_ETHTOOL_H +#define _LAN743X_ETHTOOL_H + +#include "linux/ethtool.h" + +extern const struct ethtool_ops lan743x_ethtool_ops; + +#endif /* _LAN743X_ETHTOOL_H */ diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index dd947e4dd3ce..e7dce79ff2c9 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -11,7 +11,9 @@ #include <linux/phy.h> #include <linux/rtnetlink.h> #include <linux/iopoll.h> +#include <linux/crc16.h> #include "lan743x_main.h" +#include "lan743x_ethtool.h" static void lan743x_pci_cleanup(struct lan743x_adapter *adapter) { @@ -53,13 +55,13 @@ return_error: return ret; } -static u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) +u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) { return ioread32(&adapter->csr.csr_address[offset]); } -static void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, - u32 data) +void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, + u32 data) { iowrite32(data, &adapter->csr.csr_address[offset]); } @@ -265,6 +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); @@ -828,7 +834,7 @@ static int lan743x_mac_init(struct lan743x_adapter *adapter) } if (!mac_address_valid) - random_ether_addr(adapter->mac_address); + eth_random_addr(adapter->mac_address); lan743x_mac_set_address(adapter, adapter->mac_address); ether_addr_copy(netdev->dev_addr, adapter->mac_address); return 0; @@ -974,6 +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); } } @@ -1023,6 +1030,24 @@ return_error: return ret; } +static void lan743x_rfe_open(struct lan743x_adapter *adapter) +{ + lan743x_csr_write(adapter, RFE_RSS_CFG, + RFE_RSS_CFG_UDP_IPV6_EX_ | + RFE_RSS_CFG_TCP_IPV6_EX_ | + RFE_RSS_CFG_IPV6_EX_ | + RFE_RSS_CFG_UDP_IPV6_ | + RFE_RSS_CFG_TCP_IPV6_ | + RFE_RSS_CFG_IPV6_ | + RFE_RSS_CFG_UDP_IPV4_ | + RFE_RSS_CFG_TCP_IPV4_ | + RFE_RSS_CFG_IPV4_ | + RFE_RSS_CFG_VALID_HASH_BITS_ | + RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | + RFE_RSS_CFG_RSS_HASH_STORE_ | + RFE_RSS_CFG_RSS_ENABLE_); +} + static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) { u8 *mac_addr; @@ -1206,6 +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]; @@ -1236,11 +1262,27 @@ clean_up_data_descriptor: 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; @@ -1301,10 +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. @@ -1342,6 +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_ | @@ -1455,6 +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 @@ -1472,6 +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; @@ -1500,6 +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; @@ -1521,6 +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; @@ -1534,6 +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; @@ -1561,7 +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); @@ -2390,6 +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); @@ -2417,6 +2491,12 @@ 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++) { ret = lan743x_rx_open(&adapter->rx[index]); if (ret) @@ -2434,6 +2514,9 @@ close_rx: 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: @@ -2461,6 +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); } @@ -2585,6 +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; @@ -2593,6 +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); @@ -2689,6 +2783,7 @@ static int lan743x_pcidev_probe(struct pci_dev *pdev, goto cleanup_hardware; adapter->netdev->netdev_ops = &lan743x_netdev_ops; + adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; adapter->netdev->hw_features = adapter->netdev->features; @@ -2747,10 +2842,182 @@ static void lan743x_pcidev_shutdown(struct pci_dev *pdev) lan743x_netdev_close(netdev); rtnl_unlock(); +#ifdef CONFIG_PM + pci_save_state(pdev); +#endif + /* clean up lan743x portion */ lan743x_hardware_cleanup(adapter); } +#ifdef CONFIG_PM +static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) +{ + return bitrev16(crc16(0xFFFF, buf, len)); +} + +static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) +{ + const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; + const u8 ipv6_multicast[3] = { 0x33, 0x33 }; + const u8 arp_type[2] = { 0x08, 0x06 }; + int mask_index; + u32 pmtctl; + u32 wucsr; + u32 macrx; + u16 crc; + + for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); + + /* clear wake settings */ + pmtctl = lan743x_csr_read(adapter, PMT_CTL); + pmtctl |= PMT_CTL_WUPS_MASK_; + pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | + PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | + PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); + + macrx = lan743x_csr_read(adapter, MAC_RX); + + wucsr = 0; + mask_index = 0; + + pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; + + if (adapter->wolopts & WAKE_PHY) { + pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; + pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; + } + if (adapter->wolopts & WAKE_MAGIC) { + wucsr |= MAC_WUCSR_MPEN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + } + if (adapter->wolopts & WAKE_UCAST) { + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_BCAST) { + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_MCAST) { + /* IPv4 multicast */ + crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + /* IPv6 multicast */ + crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + if (adapter->wolopts & WAKE_ARP) { + /* set MAC_WUF_CFG & WUF_MASK + * for packettype (offset 12,13) = ARP (0x0806) + */ + crc = lan743x_pm_wakeframe_crc16(arp_type, 2); + lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), + MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | + (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | + (crc & MAC_WUF_CFG_CRC16_MASK_)); + lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); + lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); + lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); + mask_index++; + + wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; + macrx |= MAC_RX_RXEN_; + pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; + pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; + } + + lan743x_csr_write(adapter, MAC_WUCSR, wucsr); + lan743x_csr_write(adapter, PMT_CTL, pmtctl); + lan743x_csr_write(adapter, MAC_RX, macrx); +} + +static int lan743x_pm_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + struct lan743x_adapter *adapter = netdev_priv(netdev); + int ret; + + lan743x_pcidev_shutdown(pdev); + + /* clear all wakes */ + lan743x_csr_write(adapter, MAC_WUCSR, 0); + lan743x_csr_write(adapter, MAC_WUCSR2, 0); + lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); + + if (adapter->wolopts) + lan743x_pm_set_wol(adapter); + + /* Host sets PME_En, put D3hot */ + ret = pci_prepare_to_sleep(pdev); + + return 0; +} + +static int lan743x_pm_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + struct lan743x_adapter *adapter = netdev_priv(netdev); + int ret; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + pci_save_state(pdev); + + ret = lan743x_hardware_init(adapter, pdev); + if (ret) { + netif_err(adapter, probe, adapter->netdev, + "lan743x_hardware_init returned %d\n", ret); + } + + /* open netdev when netdev is at running state while resume. + * For instance, it is true when system wakesup after pm-suspend + * However, it is false when system wakes up after suspend GUI menu + */ + if (netif_running(netdev)) + lan743x_netdev_open(netdev); + + netif_device_attach(netdev); + + return 0; +} + +static const struct dev_pm_ops lan743x_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) +}; +#endif /*CONFIG_PM */ + static const struct pci_device_id lan743x_pcidev_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, { 0, } @@ -2761,6 +3028,9 @@ static struct pci_driver lan743x_pcidev_driver = { .id_table = lan743x_pcidev_tbl, .probe = lan743x_pcidev_probe, .remove = lan743x_pcidev_remove, +#ifdef CONFIG_PM + .driver.pm = &lan743x_pm_ops, +#endif .shutdown = lan743x_pcidev_shutdown, }; diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index 73b463a9df61..0e82b6368798 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@microchip.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) @@ -24,8 +29,18 @@ #define HW_CFG_LRST_ BIT(1) #define PMT_CTL (0x014) +#define PMT_CTL_ETH_PHY_D3_COLD_OVR_ BIT(27) +#define PMT_CTL_MAC_D3_RX_CLK_OVR_ BIT(25) +#define PMT_CTL_ETH_PHY_EDPD_PLL_CTL_ BIT(24) +#define PMT_CTL_ETH_PHY_D3_OVR_ BIT(23) +#define PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ BIT(18) +#define PMT_CTL_GPIO_WAKEUP_EN_ BIT(15) +#define PMT_CTL_EEE_WAKEUP_EN_ BIT(13) #define PMT_CTL_READY_ BIT(7) #define PMT_CTL_ETH_PHY_RST_ BIT(4) +#define PMT_CTL_WOL_EN_ BIT(3) +#define PMT_CTL_ETH_PHY_WAKE_EN_ BIT(2) +#define PMT_CTL_WUPS_MASK_ (0x00000003) #define DP_SEL (0x024) #define DP_SEL_DPRDY_ BIT(31) @@ -42,6 +57,31 @@ #define DP_DATA_0 (0x030) +#define E2P_CMD (0x040) +#define E2P_CMD_EPC_BUSY_ BIT(31) +#define E2P_CMD_EPC_CMD_WRITE_ (0x30000000) +#define E2P_CMD_EPC_CMD_EWEN_ (0x20000000) +#define E2P_CMD_EPC_CMD_READ_ (0x00000000) +#define E2P_CMD_EPC_TIMEOUT_ BIT(10) +#define E2P_CMD_EPC_ADDR_MASK_ (0x000001FF) + +#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)) @@ -62,6 +102,7 @@ ((value << 0) & FCT_FLOW_CTL_ON_THRESHOLD_) #define MAC_CR (0x100) +#define MAC_CR_EEE_EN_ BIT(17) #define MAC_CR_ADD_ BIT(12) #define MAC_CR_ASD_ BIT(11) #define MAC_CR_CNTR_RST_ BIT(5) @@ -97,6 +138,40 @@ #define MAC_MII_DATA (0x124) +#define MAC_EEE_TX_LPI_REQ_DLY_CNT (0x130) + +#define MAC_WUCSR (0x140) +#define MAC_WUCSR_RFE_WAKE_EN_ BIT(14) +#define MAC_WUCSR_PFDA_EN_ BIT(3) +#define MAC_WUCSR_WAKE_EN_ BIT(2) +#define MAC_WUCSR_MPEN_ BIT(1) +#define MAC_WUCSR_BCST_EN_ BIT(0) + +#define MAC_WK_SRC (0x144) + +#define MAC_WUF_CFG0 (0x150) +#define MAC_NUM_OF_WUF_CFG (32) +#define MAC_WUF_CFG_BEGIN (MAC_WUF_CFG0) +#define MAC_WUF_CFG(index) (MAC_WUF_CFG_BEGIN + (4 * (index))) +#define MAC_WUF_CFG_EN_ BIT(31) +#define MAC_WUF_CFG_TYPE_MCAST_ (0x02000000) +#define MAC_WUF_CFG_TYPE_ALL_ (0x01000000) +#define MAC_WUF_CFG_OFFSET_SHIFT_ (16) +#define MAC_WUF_CFG_CRC16_MASK_ (0x0000FFFF) + +#define MAC_WUF_MASK0_0 (0x200) +#define MAC_WUF_MASK0_1 (0x204) +#define MAC_WUF_MASK0_2 (0x208) +#define MAC_WUF_MASK0_3 (0x20C) +#define MAC_WUF_MASK0_BEGIN (MAC_WUF_MASK0_0) +#define MAC_WUF_MASK1_BEGIN (MAC_WUF_MASK0_1) +#define MAC_WUF_MASK2_BEGIN (MAC_WUF_MASK0_2) +#define MAC_WUF_MASK3_BEGIN (MAC_WUF_MASK0_3) +#define MAC_WUF_MASK0(index) (MAC_WUF_MASK0_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK1(index) (MAC_WUF_MASK1_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK2(index) (MAC_WUF_MASK2_BEGIN + (0x10 * (index))) +#define MAC_WUF_MASK3(index) (MAC_WUF_MASK3_BEGIN + (0x10 * (index))) + /* offset 0x400 - 0x500, x may range from 0 to 32, for a total of 33 entries */ #define RFE_ADDR_FILT_HI(x) (0x400 + (8 * (x))) #define RFE_ADDR_FILT_HI_VALID_ BIT(31) @@ -111,13 +186,35 @@ #define RFE_CTL_MCAST_HASH_ BIT(3) #define RFE_CTL_DA_PERFECT_ BIT(1) +#define RFE_RSS_CFG (0x554) +#define RFE_RSS_CFG_UDP_IPV6_EX_ BIT(16) +#define RFE_RSS_CFG_TCP_IPV6_EX_ BIT(15) +#define RFE_RSS_CFG_IPV6_EX_ BIT(14) +#define RFE_RSS_CFG_UDP_IPV6_ BIT(13) +#define RFE_RSS_CFG_TCP_IPV6_ BIT(12) +#define RFE_RSS_CFG_IPV6_ BIT(11) +#define RFE_RSS_CFG_UDP_IPV4_ BIT(10) +#define RFE_RSS_CFG_TCP_IPV4_ BIT(9) +#define RFE_RSS_CFG_IPV4_ BIT(8) +#define RFE_RSS_CFG_VALID_HASH_BITS_ (0x000000E0) +#define RFE_RSS_CFG_RSS_QUEUE_ENABLE_ BIT(2) +#define RFE_RSS_CFG_RSS_HASH_STORE_ BIT(1) +#define RFE_RSS_CFG_RSS_ENABLE_ BIT(0) + +#define RFE_HASH_KEY(index) (0x558 + (index << 2)) + +#define RFE_INDX(index) (0x580 + (index << 2)) + +#define MAC_WUCSR2 (0x600) + #define INT_STS (0x780) #define INT_BIT_DMA_RX_(channel) BIT(24 + (channel)) #define INT_BIT_ALL_RX_ (0x0F000000) #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) @@ -158,6 +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) @@ -288,9 +450,33 @@ #define TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_ BIT(3) #define TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_ (0x00000007) +#define OTP_PWR_DN (0x1000) +#define OTP_PWR_DN_PWRDN_N_ BIT(0) + +#define OTP_ADDR1 (0x1004) +#define OTP_ADDR1_15_11_MASK_ (0x1F) + +#define OTP_ADDR2 (0x1008) +#define OTP_ADDR2_10_3_MASK_ (0xFF) + +#define OTP_PRGM_DATA (0x1010) + +#define OTP_PRGM_MODE (0x1014) +#define OTP_PRGM_MODE_BYTE_ BIT(0) + +#define OTP_TST_CMD (0x1024) +#define OTP_TST_CMD_PRGVRFY_ BIT(3) + +#define OTP_CMD_GO (0x1028) +#define OTP_CMD_GO_GO_ BIT(0) + +#define OTP_STATUS (0x1030) +#define OTP_STATUS_BUSY_ BIT(0) + /* MAC statistics registers */ #define STAT_RX_FCS_ERRORS (0x1200) #define STAT_RX_ALIGNMENT_ERRORS (0x1204) +#define STAT_RX_FRAGMENT_ERRORS (0x1208) #define STAT_RX_JABBER_ERRORS (0x120C) #define STAT_RX_UNDERSIZE_FRAME_ERRORS (0x1210) #define STAT_RX_OVERSIZE_FRAME_ERRORS (0x1214) @@ -298,12 +484,26 @@ #define STAT_RX_UNICAST_BYTE_COUNT (0x121C) #define STAT_RX_BROADCAST_BYTE_COUNT (0x1220) #define STAT_RX_MULTICAST_BYTE_COUNT (0x1224) +#define STAT_RX_UNICAST_FRAMES (0x1228) +#define STAT_RX_BROADCAST_FRAMES (0x122C) #define STAT_RX_MULTICAST_FRAMES (0x1230) +#define STAT_RX_PAUSE_FRAMES (0x1234) +#define STAT_RX_64_BYTE_FRAMES (0x1238) +#define STAT_RX_65_127_BYTE_FRAMES (0x123C) +#define STAT_RX_128_255_BYTE_FRAMES (0x1240) +#define STAT_RX_256_511_BYTES_FRAMES (0x1244) +#define STAT_RX_512_1023_BYTE_FRAMES (0x1248) +#define STAT_RX_1024_1518_BYTE_FRAMES (0x124C) +#define STAT_RX_GREATER_1518_BYTE_FRAMES (0x1250) #define STAT_RX_TOTAL_FRAMES (0x1254) +#define STAT_EEE_RX_LPI_TRANSITIONS (0x1258) +#define STAT_EEE_RX_LPI_TIME (0x125C) +#define STAT_RX_COUNTER_ROLLOVER_STATUS (0x127C) #define STAT_TX_FCS_ERRORS (0x1280) #define STAT_TX_EXCESS_DEFERRAL_ERRORS (0x1284) #define STAT_TX_CARRIER_ERRORS (0x1288) +#define STAT_TX_BAD_BYTE_COUNT (0x128C) #define STAT_TX_SINGLE_COLLISIONS (0x1290) #define STAT_TX_MULTIPLE_COLLISIONS (0x1294) #define STAT_TX_EXCESSIVE_COLLISION (0x1298) @@ -311,8 +511,21 @@ #define STAT_TX_UNICAST_BYTE_COUNT (0x12A0) #define STAT_TX_BROADCAST_BYTE_COUNT (0x12A4) #define STAT_TX_MULTICAST_BYTE_COUNT (0x12A8) +#define STAT_TX_UNICAST_FRAMES (0x12AC) +#define STAT_TX_BROADCAST_FRAMES (0x12B0) #define STAT_TX_MULTICAST_FRAMES (0x12B4) +#define STAT_TX_PAUSE_FRAMES (0x12B8) +#define STAT_TX_64_BYTE_FRAMES (0x12BC) +#define STAT_TX_65_127_BYTE_FRAMES (0x12C0) +#define STAT_TX_128_255_BYTE_FRAMES (0x12C4) +#define STAT_TX_256_511_BYTES_FRAMES (0x12C8) +#define STAT_TX_512_1023_BYTE_FRAMES (0x12CC) +#define STAT_TX_1024_1518_BYTE_FRAMES (0x12D0) +#define STAT_TX_GREATER_1518_BYTE_FRAMES (0x12D4) #define STAT_TX_TOTAL_FRAMES (0x12D8) +#define STAT_EEE_TX_LPI_TRANSITIONS (0x12DC) +#define STAT_EEE_TX_LPI_TIME (0x12E0) +#define STAT_TX_COUNTER_ROLLOVER_STATUS (0x12FC) /* End of Register definitions */ @@ -415,8 +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; @@ -443,6 +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; @@ -473,6 +694,9 @@ struct lan743x_adapter { struct net_device *netdev; struct mii_bus *mdiobus; int msg_enable; +#ifdef CONFIG_PM + u32 wolopts; +#endif struct pci_dev *pdev; struct lan743x_csr csr; struct lan743x_intr intr; @@ -480,6 +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; @@ -530,6 +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) @@ -543,6 +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 { @@ -594,4 +823,7 @@ struct lan743x_rx_buffer_info { #define RX_PROCESS_RESULT_PACKET_RECEIVED (1) #define RX_PROCESS_RESULT_PACKET_DROPPED (2) +u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset); +void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, u32 data); + #endif /* _LAN743X_H */ diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c new file mode 100644 index 000000000000..ccdf9123f26f --- /dev/null +++ b/drivers/net/ethernet/microchip/lan743x_ptp.c @@ -0,0 +1,1159 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (C) 2018 Microchip Technology Inc. */ + +#include <linux/netdevice.h> +#include "lan743x_main.h" + +#include <linux/ptp_clock_kernel.h> +#include <linux/module.h> +#include <linux/pci.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); +} + +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); + } +} + +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; + + ktime_get_clocktai_ts64(&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; + + if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK)) + return 0; + + 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; +} + +void lan743x_ptp_close(struct lan743x_adapter *adapter) +{ + struct lan743x_ptp *ptp = &adapter->ptp; + int index; + + if (IS_ENABLED(CONFIG_PTP_1588_CLOCK) && + 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"); + } + + 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 000000000000..5fc1b3cd5e33 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan743x_ptp.h @@ -0,0 +1,74 @@ +/* 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; + + struct ptp_clock *ptp_clock; + struct ptp_clock_info ptp_clock_info; + struct ptp_pin_desc pin_config[1]; + +#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 */ |