From 7b8b06544ab03553022ea77736203d3502de6415 Mon Sep 17 00:00:00 2001 From: Dmitry Bezrukov Date: Mon, 26 Nov 2018 09:33:12 +0000 Subject: net: usb: aqc111: Introduce link management Add full hardware initialization sequence and link configuration logic Signed-off-by: Dmitry Bezrukov Signed-off-by: Igor Russkikh Signed-off-by: David S. Miller --- drivers/net/usb/aqc111.c | 235 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/net/usb/aqc111.h | 13 +++ 2 files changed, 248 insertions(+) (limited to 'drivers/net/usb') diff --git a/drivers/net/usb/aqc111.c b/drivers/net/usb/aqc111.c index e277209df616..e33be16b506c 100644 --- a/drivers/net/usb/aqc111.c +++ b/drivers/net/usb/aqc111.c @@ -157,6 +157,53 @@ static int aqc111_write32_cmd(struct usbnet *dev, u8 cmd, u16 value, return aqc111_write_cmd(dev, cmd, value, index, sizeof(tmp), &tmp); } +static void aqc111_set_phy_speed(struct usbnet *dev, u8 autoneg, u16 speed) +{ + struct aqc111_data *aqc111_data = dev->driver_priv; + + aqc111_data->phy_cfg &= ~AQ_ADV_MASK; + aqc111_data->phy_cfg |= AQ_PAUSE; + aqc111_data->phy_cfg |= AQ_ASYM_PAUSE; + aqc111_data->phy_cfg |= AQ_DOWNSHIFT; + aqc111_data->phy_cfg &= ~AQ_DSH_RETRIES_MASK; + aqc111_data->phy_cfg |= (3 << AQ_DSH_RETRIES_SHIFT) & + AQ_DSH_RETRIES_MASK; + + if (autoneg == AUTONEG_ENABLE) { + switch (speed) { + case SPEED_5000: + aqc111_data->phy_cfg |= AQ_ADV_5G; + /* fall-through */ + case SPEED_2500: + aqc111_data->phy_cfg |= AQ_ADV_2G5; + /* fall-through */ + case SPEED_1000: + aqc111_data->phy_cfg |= AQ_ADV_1G; + /* fall-through */ + case SPEED_100: + aqc111_data->phy_cfg |= AQ_ADV_100M; + /* fall-through */ + } + } else { + switch (speed) { + case SPEED_5000: + aqc111_data->phy_cfg |= AQ_ADV_5G; + break; + case SPEED_2500: + aqc111_data->phy_cfg |= AQ_ADV_2G5; + break; + case SPEED_1000: + aqc111_data->phy_cfg |= AQ_ADV_1G; + break; + case SPEED_100: + aqc111_data->phy_cfg |= AQ_ADV_100M; + break; + } + } + + aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); +} + static const struct net_device_ops aqc111_netdev_ops = { .ndo_open = usbnet_open, .ndo_stop = usbnet_stop, @@ -179,6 +226,7 @@ static void aqc111_read_fw_version(struct usbnet *dev, static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf) { struct usb_device *udev = interface_to_usbdev(intf); + enum usb_device_speed usb_speed = udev->speed; struct aqc111_data *aqc111_data; int ret; @@ -206,6 +254,9 @@ static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->netdev_ops = &aqc111_netdev_ops; aqc111_read_fw_version(dev, aqc111_data); + aqc111_data->autoneg = AUTONEG_ENABLE; + aqc111_data->advertised_speed = (usb_speed == USB_SPEED_SUPER) ? + SPEED_5000 : SPEED_1000; return 0; } @@ -224,6 +275,7 @@ static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf) 2, ®16); /* Power down ethernet PHY */ + aqc111_data->phy_cfg &= ~AQ_ADV_MASK; aqc111_data->phy_cfg |= AQ_LOW_POWER; aqc111_data->phy_cfg &= ~AQ_PHY_POWER_EN; aqc111_write32_cmd_nopm(dev, AQ_PHY_OPS, 0, 0, @@ -232,6 +284,179 @@ static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf) kfree(aqc111_data); } +static void aqc111_status(struct usbnet *dev, struct urb *urb) +{ + struct aqc111_data *aqc111_data = dev->driver_priv; + u64 *event_data = NULL; + int link = 0; + + if (urb->actual_length < sizeof(*event_data)) + return; + + event_data = urb->transfer_buffer; + le64_to_cpus(event_data); + + if (*event_data & AQ_LS_MASK) + link = 1; + else + link = 0; + + aqc111_data->link_speed = (*event_data & AQ_SPEED_MASK) >> + AQ_SPEED_SHIFT; + aqc111_data->link = link; + + if (netif_carrier_ok(dev->net) != link) + usbnet_defer_kevent(dev, EVENT_LINK_RESET); +} + +static void aqc111_configure_rx(struct usbnet *dev, + struct aqc111_data *aqc111_data) +{ + enum usb_device_speed usb_speed = dev->udev->speed; + u16 link_speed = 0, usb_host = 0; + u8 buf[5] = { 0 }; + u8 queue_num = 0; + u16 reg16 = 0; + u8 reg8 = 0; + + buf[0] = 0x00; + buf[1] = 0xF8; + buf[2] = 0x07; + switch (aqc111_data->link_speed) { + case AQ_INT_SPEED_5G: + link_speed = 5000; + reg8 = 0x05; + reg16 = 0x001F; + break; + case AQ_INT_SPEED_2_5G: + link_speed = 2500; + reg16 = 0x003F; + break; + case AQ_INT_SPEED_1G: + link_speed = 1000; + reg16 = 0x009F; + break; + case AQ_INT_SPEED_100M: + link_speed = 100; + queue_num = 1; + reg16 = 0x063F; + buf[1] = 0xFB; + buf[2] = 0x4; + break; + } + + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_INTER_PACKET_GAP_0, + 1, 1, ®8); + + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TX_PAUSE_RESEND_T, 3, 3, buf); + + switch (usb_speed) { + case USB_SPEED_SUPER: + usb_host = 3; + break; + case USB_SPEED_HIGH: + usb_host = 2; + break; + case USB_SPEED_FULL: + case USB_SPEED_LOW: + usb_host = 1; + queue_num = 0; + break; + default: + usb_host = 0; + break; + } + + memcpy(buf, &AQC111_BULKIN_SIZE[queue_num], 5); + /* RX bulk configuration */ + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf); + + /* Set high low water level */ + reg16 = 0x0810; + + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW, + 2, ®16); + netdev_info(dev->net, "Link Speed %d, USB %d", link_speed, usb_host); +} + +static int aqc111_link_reset(struct usbnet *dev) +{ + struct aqc111_data *aqc111_data = dev->driver_priv; + u16 reg16 = 0; + u8 reg8 = 0; + + if (aqc111_data->link == 1) { /* Link up */ + aqc111_configure_rx(dev, aqc111_data); + + /* Vlan Tag Filter */ + reg8 = SFR_VLAN_CONTROL_VSO; + + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, + 1, 1, ®8); + + reg8 = 0x0; + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, + 1, 1, ®8); + + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMTX_DMA_CONTROL, + 1, 1, ®8); + + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ARC_CTRL, 1, 1, ®8); + + reg16 = SFR_RX_CTL_IPE | SFR_RX_CTL_AB; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); + + reg8 = SFR_RX_PATH_READY; + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH, + 1, 1, ®8); + + reg8 = SFR_BULK_OUT_EFF_EN; + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, + 1, 1, ®8); + + reg16 = 0; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + reg16 = SFR_MEDIUM_XGMIIMODE | SFR_MEDIUM_FULL_DUPLEX; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + reg16 |= SFR_MEDIUM_RECEIVE_EN | SFR_MEDIUM_RXFLOW_CTRLEN | + SFR_MEDIUM_TXFLOW_CTRLEN; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + reg16 = SFR_RX_CTL_IPE | SFR_RX_CTL_AB | SFR_RX_CTL_START; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); + + netif_carrier_on(dev->net); + } else { + aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + reg16 &= ~SFR_MEDIUM_RECEIVE_EN; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); + reg16 &= ~SFR_RX_CTL_START; + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, ®16); + + reg8 = SFR_BULK_OUT_FLUSH_EN | SFR_BULK_OUT_EFF_EN; + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, + 1, 1, ®8); + reg8 = SFR_BULK_OUT_EFF_EN; + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL, + 1, 1, ®8); + + netif_carrier_off(dev->net); + } + return 0; +} + static int aqc111_reset(struct usbnet *dev) { struct aqc111_data *aqc111_data = dev->driver_priv; @@ -254,6 +479,12 @@ static int aqc111_reset(struct usbnet *dev) SFR_MONITOR_MODE_RW_FLAG); aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, ®8); + netif_carrier_off(dev->net); + + /* Phy advertise */ + aqc111_set_phy_speed(dev, aqc111_data->autoneg, + aqc111_data->advertised_speed); + return 0; } @@ -275,6 +506,8 @@ static int aqc111_stop(struct usbnet *dev) aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); + netif_carrier_off(dev->net); + return 0; } @@ -282,6 +515,8 @@ static const struct driver_info aqc111_info = { .description = "Aquantia AQtion USB to 5GbE Controller", .bind = aqc111_bind, .unbind = aqc111_unbind, + .status = aqc111_status, + .link_reset = aqc111_link_reset, .reset = aqc111_reset, .stop = aqc111_stop, }; diff --git a/drivers/net/usb/aqc111.h b/drivers/net/usb/aqc111.h index a93d34af76b9..f3b45d8ca4e3 100644 --- a/drivers/net/usb/aqc111.h +++ b/drivers/net/usb/aqc111.h @@ -113,6 +113,7 @@ #define AQ_ADV_1G BIT(1) #define AQ_ADV_2G5 BIT(2) #define AQ_ADV_5G BIT(3) +#define AQ_ADV_MASK 0x0F #define AQ_PAUSE BIT(16) #define AQ_ASYM_PAUSE BIT(17) @@ -127,6 +128,10 @@ /******************************************************************************/ struct aqc111_data { + u8 link_speed; + u8 link; + u8 autoneg; + u32 advertised_speed; struct { u8 major; u8 minor; @@ -135,6 +140,14 @@ struct aqc111_data { u32 phy_cfg; }; +#define AQ_LS_MASK 0x8000 +#define AQ_SPEED_MASK 0x7F00 +#define AQ_SPEED_SHIFT 0x0008 +#define AQ_INT_SPEED_5G 0x000F +#define AQ_INT_SPEED_2_5G 0x0010 +#define AQ_INT_SPEED_1G 0x0011 +#define AQ_INT_SPEED_100M 0x0013 + static struct { unsigned char ctrl; unsigned char timer_l; -- cgit v1.2.3-59-g8ed1b