/* * Copyright (c) 2015 Google, Inc * Copyright (c) 2011 The Chromium OS Authors. * Copyright (C) 2009 NVIDIA, Corporation * Copyright (C) 2007-2008 SMSC (Steve Glendinning) * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #include #include #include "usb_ether.h" /* SMSC LAN95xx based USB 2.0 Ethernet Devices */ /* LED defines */ #define LED_GPIO_CFG (0x24) #define LED_GPIO_CFG_SPD_LED (0x01000000) #define LED_GPIO_CFG_LNK_LED (0x00100000) #define LED_GPIO_CFG_FDX_LED (0x00010000) /* Tx command words */ #define TX_CMD_A_FIRST_SEG_ 0x00002000 #define TX_CMD_A_LAST_SEG_ 0x00001000 /* Rx status word */ #define RX_STS_FL_ 0x3FFF0000 /* Frame Length */ #define RX_STS_ES_ 0x00008000 /* Error Summary */ /* SCSRs */ #define ID_REV 0x00 #define INT_STS 0x08 #define TX_CFG 0x10 #define TX_CFG_ON_ 0x00000004 #define HW_CFG 0x14 #define HW_CFG_BIR_ 0x00001000 #define HW_CFG_RXDOFF_ 0x00000600 #define HW_CFG_MEF_ 0x00000020 #define HW_CFG_BCE_ 0x00000002 #define HW_CFG_LRST_ 0x00000008 #define PM_CTRL 0x20 #define PM_CTL_PHY_RST_ 0x00000010 #define AFC_CFG 0x2C /* * Hi watermark = 15.5Kb (~10 mtu pkts) * low watermark = 3k (~2 mtu pkts) * backpressure duration = ~ 350us * Apply FC on any frame. */ #define AFC_CFG_DEFAULT 0x00F830A1 #define E2P_CMD 0x30 #define E2P_CMD_BUSY_ 0x80000000 #define E2P_CMD_READ_ 0x00000000 #define E2P_CMD_TIMEOUT_ 0x00000400 #define E2P_CMD_LOADED_ 0x00000200 #define E2P_CMD_ADDR_ 0x000001FF #define E2P_DATA 0x34 #define BURST_CAP 0x38 #define INT_EP_CTL 0x68 #define INT_EP_CTL_PHY_INT_ 0x00008000 #define BULK_IN_DLY 0x6C /* MAC CSRs */ #define MAC_CR 0x100 #define MAC_CR_MCPAS_ 0x00080000 #define MAC_CR_PRMS_ 0x00040000 #define MAC_CR_HPFILT_ 0x00002000 #define MAC_CR_TXEN_ 0x00000008 #define MAC_CR_RXEN_ 0x00000004 #define ADDRH 0x104 #define ADDRL 0x108 #define MII_ADDR 0x114 #define MII_WRITE_ 0x02 #define MII_BUSY_ 0x01 #define MII_READ_ 0x00 /* ~of MII Write bit */ #define MII_DATA 0x118 #define FLOW 0x11C #define VLAN1 0x120 #define COE_CR 0x130 #define Tx_COE_EN_ 0x00010000 #define Rx_COE_EN_ 0x00000001 /* Vendor-specific PHY Definitions */ #define PHY_INT_SRC 29 #define PHY_INT_MASK 30 #define PHY_INT_MASK_ANEG_COMP_ ((u16)0x0040) #define PHY_INT_MASK_LINK_DOWN_ ((u16)0x0010) #define PHY_INT_MASK_DEFAULT_ (PHY_INT_MASK_ANEG_COMP_ | \ PHY_INT_MASK_LINK_DOWN_) /* USB Vendor Requests */ #define USB_VENDOR_REQUEST_WRITE_REGISTER 0xA0 #define USB_VENDOR_REQUEST_READ_REGISTER 0xA1 /* Some extra defines */ #define HS_USB_PKT_SIZE 512 #define FS_USB_PKT_SIZE 64 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) #define DEFAULT_BULK_IN_DELAY 0x00002000 #define MAX_SINGLE_PACKET_SIZE 2048 #define EEPROM_MAC_OFFSET 0x01 #define SMSC95XX_INTERNAL_PHY_ID 1 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ /* local defines */ #define SMSC95XX_BASE_NAME "sms" #define USB_CTRL_SET_TIMEOUT 5000 #define USB_CTRL_GET_TIMEOUT 5000 #define USB_BULK_SEND_TIMEOUT 5000 #define USB_BULK_RECV_TIMEOUT 5000 #define RX_URB_SIZE 2048 #define PHY_CONNECT_TIMEOUT 5000 #define TURBO_MODE #ifndef CONFIG_DM_ETH /* local vars */ static int curr_eth_dev; /* index for name of next device detected */ #endif /* driver private */ struct smsc95xx_private { #ifdef CONFIG_DM_ETH struct ueth_data ueth; #endif size_t rx_urb_size; /* maximum USB URB size */ u32 mac_cr; /* MAC control register value */ int have_hwaddr; /* 1 if we have a hardware MAC address */ }; /* * Smsc95xx infrastructure commands */ static int smsc95xx_write_reg(struct usb_device *udev, u32 index, u32 data) { int len; ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1); cpu_to_le32s(&data); tmpbuf[0] = data; len = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, tmpbuf, sizeof(data), USB_CTRL_SET_TIMEOUT); if (len != sizeof(data)) { debug("smsc95xx_write_reg failed: index=%d, data=%d, len=%d", index, data, len); return -EIO; } return 0; } static int smsc95xx_read_reg(struct usb_device *udev, u32 index, u32 *data) { int len; ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1); len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, tmpbuf, sizeof(data), USB_CTRL_GET_TIMEOUT); *data = tmpbuf[0]; if (len != sizeof(data)) { debug("smsc95xx_read_reg failed: index=%d, len=%d", index, len); return -EIO; } le32_to_cpus(data); return 0; } /* Loop until the read is completed with timeout */ static int smsc95xx_phy_wait_not_busy(struct usb_device *udev) { unsigned long start_time = get_timer(0); u32 val; do { smsc95xx_read_reg(udev, MII_ADDR, &val); if (!(val & MII_BUSY_)) return 0; } while (get_timer(start_time) < 1000); return -ETIMEDOUT; } static int smsc95xx_mdio_read(struct usb_device *udev, int phy_id, int idx) { u32 val, addr; /* confirm MII not busy */ if (smsc95xx_phy_wait_not_busy(udev)) { debug("MII is busy in smsc95xx_mdio_read\n"); return -ETIMEDOUT; } /* set the address, index & direction (read from PHY) */ addr = (phy_id << 11) | (idx << 6) | MII_READ_; smsc95xx_write_reg(udev, MII_ADDR, addr); if (smsc95xx_phy_wait_not_busy(udev)) { debug("Timed out reading MII reg %02X\n", idx); return -ETIMEDOUT; } smsc95xx_read_reg(udev, MII_DATA, &val); return (u16)(val & 0xFFFF); } static void smsc95xx_mdio_write(struct usb_device *udev, int phy_id, int idx, int regval) { u32 val, addr; /* confirm MII not busy */ if (smsc95xx_phy_wait_not_busy(udev)) { debug("MII is busy in smsc95xx_mdio_write\n"); return; } val = regval; smsc95xx_write_reg(udev, MII_DATA, val); /* set the address, index & direction (write to PHY) */ addr = (phy_id << 11) | (idx << 6) | MII_WRITE_; smsc95xx_write_reg(udev, MII_ADDR, addr); if (smsc95xx_phy_wait_not_busy(udev)) debug("Timed out writing MII reg %02X\n", idx); } static int smsc95xx_eeprom_confirm_not_busy(struct usb_device *udev) { unsigned long start_time = get_timer(0); u32 val; do { smsc95xx_read_reg(udev, E2P_CMD, &val); if (!(val & E2P_CMD_BUSY_)) return 0; udelay(40); } while (get_timer(start_time) < 1 * 1000 * 1000); debug("EEPROM is busy\n"); return -ETIMEDOUT; } static int smsc95xx_wait_eeprom(struct usb_device *udev) { unsigned long start_time = get_timer(0); u32 val; do { smsc95xx_read_reg(udev, E2P_CMD, &val); if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) break; udelay(40); } while (get_timer(start_time) < 1 * 1000 * 1000); if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { debug("EEPROM read operation timeout\n"); return -ETIMEDOUT; } return 0; } static int smsc95xx_read_eeprom(struct usb_device *udev, u32 offset, u32 length, u8 *data) { u32 val; int i, ret; ret = smsc95xx_eeprom_confirm_not_busy(udev); if (ret) return ret; for (i = 0; i < length; i++) { val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); smsc95xx_write_reg(udev, E2P_CMD, val); ret = smsc95xx_wait_eeprom(udev); if (ret < 0) return ret; smsc95xx_read_reg(udev, E2P_DATA, &val); data[i] = val & 0xFF; offset++; } return 0; } /* * mii_nway_restart - restart NWay (autonegotiation) for this interface * * Returns 0 on success, negative on error. */ static int mii_nway_restart(struct usb_device *udev, struct ueth_data *dev) { int bmcr; int r = -1; /* if autoneg is off, it's an error */ bmcr = smsc95xx_mdio_read(udev, dev->phy_id, MII_BMCR); if (bmcr & BMCR_ANENABLE) { bmcr |= BMCR_ANRESTART; smsc95xx_mdio_write(udev, dev->phy_id, MII_BMCR, bmcr); r = 0; } return r; } static int smsc95xx_phy_initialize(struct usb_device *udev, struct ueth_data *dev) { smsc95xx_mdio_write(udev, dev->phy_id, MII_BMCR, BMCR_RESET); smsc95xx_mdio_write(udev, dev->phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); /* read to clear */ smsc95xx_mdio_read(udev, dev->phy_id, PHY_INT_SRC); smsc95xx_mdio_write(udev, dev->phy_id, PHY_INT_MASK, PHY_INT_MASK_DEFAULT_); mii_nway_restart(udev, dev); debug("phy initialised succesfully\n"); return 0; } static int smsc95xx_init_mac_address(unsigned char *enetaddr, struct usb_device *udev) { int ret; /* try reading mac address from EEPROM */ ret = smsc95xx_read_eeprom(udev, EEPROM_MAC_OFFSET, ETH_ALEN, enetaddr); if (ret) return ret; if (is_valid_ethaddr(enetaddr)) { /* eeprom values are valid so use them */ debug("MAC address read from EEPROM\n"); return 0; } /* * No eeprom, or eeprom values are invalid. Generating a random MAC * address is not safe. Just return an error. */ debug("Invalid MAC address read from EEPROM\n"); return -ENXIO; } static int smsc95xx_write_hwaddr_common(struct usb_device *udev, struct smsc95xx_private *priv, unsigned char *enetaddr) { u32 addr_lo = __get_unaligned_le32(&enetaddr[0]); u32 addr_hi = __get_unaligned_le16(&enetaddr[4]); int ret; /* set hardware address */ debug("** %s()\n", __func__); ret = smsc95xx_write_reg(udev, ADDRL, addr_lo); if (ret < 0) return ret; ret = smsc95xx_write_reg(udev, ADDRH, addr_hi); if (ret < 0) return ret; debug("MAC %pM\n", enetaddr); priv->have_hwaddr = 1; return 0; } /* Enable or disable Tx & Rx checksum offload engines */ static int smsc95xx_set_csums(struct usb_device *udev, int use_tx_csum, int use_rx_csum) { u32 read_buf; int ret = smsc95xx_read_reg(udev, COE_CR, &read_buf); if (ret < 0) return ret; if (use_tx_csum) read_buf |= Tx_COE_EN_; else read_buf &= ~Tx_COE_EN_; if (use_rx_csum) read_buf |= Rx_COE_EN_; else read_buf &= ~Rx_COE_EN_; ret = smsc95xx_write_reg(udev, COE_CR, read_buf); if (ret < 0) return ret; debug("COE_CR = 0x%08x\n", read_buf); return 0; } static void smsc95xx_set_multicast(struct smsc95xx_private *priv) { /* No multicast in u-boot */ priv->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); } /* starts the TX path */ static void smsc95xx_start_tx_path(struct usb_device *udev, struct smsc95xx_private *priv) { u32 reg_val; /* Enable Tx at MAC */ priv->mac_cr |= MAC_CR_TXEN_; smsc95xx_write_reg(udev, MAC_CR, priv->mac_cr); /* Enable Tx at SCSRs */ reg_val = TX_CFG_ON_; smsc95xx_write_reg(udev, TX_CFG, reg_val); } /* Starts the Receive path */ static void smsc95xx_start_rx_path(struct usb_device *udev, struct smsc95xx_private *priv) { priv->mac_cr |= MAC_CR_RXEN_; smsc95xx_write_reg(udev, MAC_CR, priv->mac_cr); } static int smsc95xx_init_common(struct usb_device *udev, struct ueth_data *dev, struct smsc95xx_private *priv, unsigned char *enetaddr) { int ret; u32 write_buf; u32 read_buf; u32 burst_cap; int timeout; #define TIMEOUT_RESOLUTION 50 /* ms */ int link_detected; debug("** %s()\n", __func__); dev->phy_id = SMSC95XX_INTERNAL_PHY_ID; /* fixed phy id */ write_buf = HW_CFG_LRST_; ret = smsc95xx_write_reg(udev, HW_CFG, write_buf); if (ret < 0) return ret; timeout = 0; do { ret = smsc95xx_read_reg(udev, HW_CFG, &read_buf); if (ret < 0) return ret; udelay(10 * 1000); timeout++; } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); if (timeout >= 100) { debug("timeout waiting for completion of Lite Reset\n"); return -ETIMEDOUT; } write_buf = PM_CTL_PHY_RST_; ret = smsc95xx_write_reg(udev, PM_CTRL, write_buf); if (ret < 0) return ret; timeout = 0; do { ret = smsc95xx_read_reg(udev, PM_CTRL, &read_buf); if (ret < 0) return ret; udelay(10 * 1000); timeout++; } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); if (timeout >= 100) { debug("timeout waiting for PHY Reset\n"); return -ETIMEDOUT; } if (!priv->have_hwaddr && smsc95xx_init_mac_address(enetaddr, udev) == 0) priv->have_hwaddr = 1; if (!priv->have_hwaddr) { puts("Error: SMSC95xx: No MAC address set - set usbethaddr\n"); return -EADDRNOTAVAIL; } ret = smsc95xx_write_hwaddr_common(udev, priv, enetaddr); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, HW_CFG, &read_buf); if (ret < 0) return ret; debug("Read Value from HW_CFG : 0x%08x\n", read_buf); read_buf |= HW_CFG_BIR_; ret = smsc95xx_write_reg(udev, HW_CFG, read_buf); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, HW_CFG, &read_buf); if (ret < 0) return ret; debug("Read Value from HW_CFG after writing " "HW_CFG_BIR_: 0x%08x\n", read_buf); #ifdef TURBO_MODE if (dev->pusb_dev->speed == USB_SPEED_HIGH) { burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; priv->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; } else { burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; priv->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; } #else burst_cap = 0; priv->rx_urb_size = MAX_SINGLE_PACKET_SIZE; #endif debug("rx_urb_size=%ld\n", (ulong)priv->rx_urb_size); ret = smsc95xx_write_reg(udev, BURST_CAP, burst_cap); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, BURST_CAP, &read_buf); if (ret < 0) return ret; debug("Read Value from BURST_CAP after writing: 0x%08x\n", read_buf); read_buf = DEFAULT_BULK_IN_DELAY; ret = smsc95xx_write_reg(udev, BULK_IN_DLY, read_buf); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, BULK_IN_DLY, &read_buf); if (ret < 0) return ret; debug("Read Value from BULK_IN_DLY after writing: " "0x%08x\n", read_buf); ret = smsc95xx_read_reg(udev, HW_CFG, &read_buf); if (ret < 0) return ret; debug("Read Value from HW_CFG: 0x%08x\n", read_buf); #ifdef TURBO_MODE read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); #endif read_buf &= ~HW_CFG_RXDOFF_; #define NET_IP_ALIGN 0 read_buf |= NET_IP_ALIGN << 9; ret = smsc95xx_write_reg(udev, HW_CFG, read_buf); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, HW_CFG, &read_buf); if (ret < 0) return ret; debug("Read Value from HW_CFG after writing: 0x%08x\n", read_buf); write_buf = 0xFFFFFFFF; ret = smsc95xx_write_reg(udev, INT_STS, write_buf); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, ID_REV, &read_buf); if (ret < 0) return ret; debug("ID_REV = 0x%08x\n", read_buf); /* Configure GPIO pins as LED outputs */ write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | LED_GPIO_CFG_FDX_LED; ret = smsc95xx_write_reg(udev, LED_GPIO_CFG, write_buf); if (ret < 0) return ret; debug("LED_GPIO_CFG set\n"); /* Init Tx */ write_buf = 0; ret = smsc95xx_write_reg(udev, FLOW, write_buf); if (ret < 0) return ret; read_buf = AFC_CFG_DEFAULT; ret = smsc95xx_write_reg(udev, AFC_CFG, read_buf); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, MAC_CR, &priv->mac_cr); if (ret < 0) return ret; /* Init Rx. Set Vlan */ write_buf = (u32)ETH_P_8021Q; ret = smsc95xx_write_reg(udev, VLAN1, write_buf); if (ret < 0) return ret; /* Disable checksum offload engines */ ret = smsc95xx_set_csums(udev, 0, 0); if (ret < 0) { debug("Failed to set csum offload: %d\n", ret); return ret; } smsc95xx_set_multicast(priv); ret = smsc95xx_phy_initialize(udev, dev); if (ret < 0) return ret; ret = smsc95xx_read_reg(udev, INT_EP_CTL, &read_buf); if (ret < 0) return ret; /* enable PHY interrupts */ read_buf |= INT_EP_CTL_PHY_INT_; ret = smsc95xx_write_reg(udev, INT_EP_CTL, read_buf); if (ret < 0) return ret; smsc95xx_start_tx_path(udev, priv); smsc95xx_start_rx_path(udev, priv); timeout = 0; do { link_detected = smsc95xx_mdio_read(udev, dev->phy_id, MII_BMSR) & BMSR_LSTATUS; if (!link_detected) { if (timeout == 0) printf("Waiting for Ethernet connection... "); udelay(TIMEOUT_RESOLUTION * 1000); timeout += TIMEOUT_RESOLUTION; } } while (!link_detected && timeout < PHY_CONNECT_TIMEOUT); if (link_detected) { if (timeout != 0) printf("done.\n"); } else { printf("unable to connect.\n"); return -EIO; } return 0; } static int smsc95xx_send_common(struct ueth_data *dev, void *packet, int length) { int err; int actual_len; u32 tx_cmd_a; u32 tx_cmd_b; ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg, PKTSIZE + sizeof(tx_cmd_a) + sizeof(tx_cmd_b)); debug("** %s(), len %d, buf %#x\n", __func__, length, (int)msg); if (length > PKTSIZE) return -ENOSPC; tx_cmd_a = (u32)length | TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; tx_cmd_b = (u32)length; cpu_to_le32s(&tx_cmd_a); cpu_to_le32s(&tx_cmd_b); /* prepend cmd_a and cmd_b */ memcpy(msg, &tx_cmd_a, sizeof(tx_cmd_a)); memcpy(msg + sizeof(tx_cmd_a), &tx_cmd_b, sizeof(tx_cmd_b)); memcpy(msg + sizeof(tx_cmd_a) + sizeof(tx_cmd_b), (void *)packet, length); err = usb_bulk_msg(dev->pusb_dev, usb_sndbulkpipe(dev->pusb_dev, dev->ep_out), (void *)msg, length + sizeof(tx_cmd_a) + sizeof(tx_cmd_b), &actual_len, USB_BULK_SEND_TIMEOUT); debug("Tx: len = %u, actual = %u, err = %d\n", length + sizeof(tx_cmd_a) + sizeof(tx_cmd_b), actual_len, err); return err; } #ifndef CONFIG_DM_ETH /* * Smsc95xx callbacks */ static int smsc95xx_init(struct eth_device *eth, bd_t *bd) { struct ueth_data *dev = (struct ueth_data *)eth->priv; struct usb_device *udev = dev->pusb_dev; struct smsc95xx_private *priv = (struct smsc95xx_private *)dev->dev_priv; return smsc95xx_init_common(udev, dev, priv, eth->enetaddr); } static int smsc95xx_send(struct eth_device *eth, void *packet, int length) { struct ueth_data *dev = (struct ueth_data *)eth->priv; return smsc95xx_send_common(dev, packet, length); } static int smsc95xx_recv(struct eth_device *eth) { struct ueth_data *dev = (struct ueth_data *)eth->priv; DEFINE_CACHE_ALIGN_BUFFER(unsigned char, recv_buf, RX_URB_SIZE); unsigned char *buf_ptr; int err; int actual_len; u32 packet_len; int cur_buf_align; debug("** %s()\n", __func__); err = usb_bulk_msg(dev->pusb_dev, usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in), (void *)recv_buf, RX_URB_SIZE, &actual_len, USB_BULK_RECV_TIMEOUT); debug("Rx: len = %u, actual = %u, err = %d\n", RX_URB_SIZE, actual_len, err); if (err != 0) { debug("Rx: failed to receive\n"); return -err; } if (actual_len > RX_URB_SIZE) { debug("Rx: received too many bytes %d\n", actual_len); return -ENOSPC; } buf_ptr = recv_buf; while (actual_len > 0) { /* * 1st 4 bytes contain the length of the actual data plus error * info. Extract data length. */ if (actual_len < sizeof(packet_len)) { debug("Rx: incomplete packet length\n"); return -EIO; } memcpy(&packet_len, buf_ptr, sizeof(packet_len)); le32_to_cpus(&packet_len); if (packet_len & RX_STS_ES_) { debug("Rx: Error header=%#x", packet_len); return -EIO; } packet_len = ((packet_len & RX_STS_FL_) >> 16); if (packet_len > actual_len - sizeof(packet_len)) { debug("Rx: too large packet: %d\n", packet_len); return -EIO; } /* Notify net stack */ net_process_received_packet(buf_ptr + sizeof(packet_len), packet_len - 4); /* Adjust for next iteration */ actual_len -= sizeof(packet_len) + packet_len; buf_ptr += sizeof(packet_len) + packet_len; cur_buf_align = (int)buf_ptr - (int)recv_buf; if (cur_buf_align & 0x03) { int align = 4 - (cur_buf_align & 0x03); actual_len -= align; buf_ptr += align; } } return err; } static void smsc95xx_halt(struct eth_device *eth) { debug("** %s()\n", __func__); } static int smsc95xx_write_hwaddr(struct eth_device *eth) { struct ueth_data *dev = eth->priv; struct usb_device *udev = dev->pusb_dev; struct smsc95xx_private *priv = dev->dev_priv; return smsc95xx_write_hwaddr_common(udev, priv, eth->enetaddr); } /* * SMSC probing functions */ void smsc95xx_eth_before_probe(void) { curr_eth_dev = 0; } struct smsc95xx_dongle { unsigned short vendor; unsigned short product; }; static const struct smsc95xx_dongle smsc95xx_dongles[] = { { 0x0424, 0xec00 }, /* LAN9512/LAN9514 Ethernet */ { 0x0424, 0x9500 }, /* LAN9500 Ethernet */ { 0x0424, 0x9730 }, /* LAN9730 Ethernet (HSIC) */ { 0x0424, 0x9900 }, /* SMSC9500 USB Ethernet Device (SAL10) */ { 0x0424, 0x9e00 }, /* LAN9500A Ethernet */ { 0x0000, 0x0000 } /* END - Do not remove */ }; /* Probe to see if a new device is actually an SMSC device */ int smsc95xx_eth_probe(struct usb_device *dev, unsigned int ifnum, struct ueth_data *ss) { struct usb_interface *iface; struct usb_interface_descriptor *iface_desc; int i; /* let's examine the device now */ iface = &dev->config.if_desc[ifnum]; iface_desc = &dev->config.if_desc[ifnum].desc; for (i = 0; smsc95xx_dongles[i].vendor != 0; i++) { if (dev->descriptor.idVendor == smsc95xx_dongles[i].vendor && dev->descriptor.idProduct == smsc95xx_dongles[i].product) /* Found a supported dongle */ break; } if (smsc95xx_dongles[i].vendor == 0) return 0; /* At this point, we know we've got a live one */ debug("\n\nUSB Ethernet device detected\n"); memset(ss, '\0', sizeof(struct ueth_data)); /* Initialize the ueth_data structure with some useful info */ ss->ifnum = ifnum; ss->pusb_dev = dev; ss->subclass = iface_desc->bInterfaceSubClass; ss->protocol = iface_desc->bInterfaceProtocol; /* * We are expecting a minimum of 3 endpoints - in, out (bulk), and int. * We will ignore any others. */ for (i = 0; i < iface_desc->bNumEndpoints; i++) { /* is it an BULK endpoint? */ if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) { if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) ss->ep_in = iface->ep_desc[i].bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; else ss->ep_out = iface->ep_desc[i].bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; } /* is it an interrupt endpoint? */ if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { ss->ep_int = iface->ep_desc[i].bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; ss->irqinterval = iface->ep_desc[i].bInterval; } } debug("Endpoints In %d Out %d Int %d\n", ss->ep_in, ss->ep_out, ss->ep_int); /* Do some basic sanity checks, and bail if we find a problem */ if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) || !ss->ep_in || !ss->ep_out || !ss->ep_int) { debug("Problems with device\n"); return 0; } dev->privptr = (void *)ss; /* alloc driver private */ ss->dev_priv = calloc(1, sizeof(struct smsc95xx_private)); if (!ss->dev_priv) return 0; return 1; } int smsc95xx_eth_get_info(struct usb_device *dev, struct ueth_data *ss, struct eth_device *eth) { debug("** %s()\n", __func__); if (!eth) { debug("%s: missing parameter.\n", __func__); return 0; } sprintf(eth->name, "%s%d", SMSC95XX_BASE_NAME, curr_eth_dev++); eth->init = smsc95xx_init; eth->send = smsc95xx_send; eth->recv = smsc95xx_recv; eth->halt = smsc95xx_halt; eth->write_hwaddr = smsc95xx_write_hwaddr; eth->priv = ss; return 1; } #endif /* !CONFIG_DM_ETH */ #ifdef CONFIG_DM_ETH static int smsc95xx_eth_start(struct udevice *dev) { struct usb_device *udev = dev_get_parentdata(dev); struct smsc95xx_private *priv = dev_get_priv(dev); struct eth_pdata *pdata = dev_get_platdata(dev); /* Driver-model Ethernet ensures we have this */ priv->have_hwaddr = 1; return smsc95xx_init_common(udev, &priv->ueth, priv, pdata->enetaddr); } void smsc95xx_eth_stop(struct udevice *dev) { debug("** %s()\n", __func__); } int smsc95xx_eth_send(struct udevice *dev, void *packet, int length) { struct smsc95xx_private *priv = dev_get_priv(dev); return smsc95xx_send_common(&priv->ueth, packet, length); } int smsc95xx_eth_recv(struct udevice *dev, int flags, uchar **packetp) { struct smsc95xx_private *priv = dev_get_priv(dev); struct ueth_data *ueth = &priv->ueth; uint8_t *ptr; int ret, len; u32 packet_len; len = usb_ether_get_rx_bytes(ueth, &ptr); debug("%s: first try, len=%d\n", __func__, len); if (!len) { if (!(flags & ETH_RECV_CHECK_DEVICE)) return -EAGAIN; ret = usb_ether_receive(ueth, RX_URB_SIZE); if (ret == -EAGAIN) return ret; len = usb_ether_get_rx_bytes(ueth, &ptr); debug("%s: second try, len=%d\n", __func__, len); } /* * 1st 4 bytes contain the length of the actual data plus error info. * Extract data length. */ if (len < sizeof(packet_len)) { debug("Rx: incomplete packet length\n"); goto err; } memcpy(&packet_len, ptr, sizeof(packet_len)); le32_to_cpus(&packet_len); if (packet_len & RX_STS_ES_) { debug("Rx: Error header=%#x", packet_len); goto err; } packet_len = ((packet_len & RX_STS_FL_) >> 16); if (packet_len > len - sizeof(packet_len)) { debug("Rx: too large packet: %d\n", packet_len); goto err; } *packetp = ptr + sizeof(packet_len); return packet_len; err: usb_ether_advance_rxbuf(ueth, -1); return -EINVAL; } static int smsc95xx_free_pkt(struct udevice *dev, uchar *packet, int packet_len) { struct smsc95xx_private *priv = dev_get_priv(dev); packet_len = ALIGN(packet_len, 4); usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len); return 0; } int smsc95xx_write_hwaddr(struct udevice *dev) { struct usb_device *udev = dev_get_parentdata(dev); struct eth_pdata *pdata = dev_get_platdata(dev); struct smsc95xx_private *priv = dev_get_priv(dev); return smsc95xx_write_hwaddr_common(udev, priv, pdata->enetaddr); } static int smsc95xx_eth_probe(struct udevice *dev) { struct smsc95xx_private *priv = dev_get_priv(dev); struct ueth_data *ueth = &priv->ueth; return usb_ether_register(dev, ueth, RX_URB_SIZE); } static const struct eth_ops smsc95xx_eth_ops = { .start = smsc95xx_eth_start, .send = smsc95xx_eth_send, .recv = smsc95xx_eth_recv, .free_pkt = smsc95xx_free_pkt, .stop = smsc95xx_eth_stop, .write_hwaddr = smsc95xx_write_hwaddr, }; U_BOOT_DRIVER(smsc95xx_eth) = { .name = "smsc95xx_eth", .id = UCLASS_ETH, .probe = smsc95xx_eth_probe, .ops = &smsc95xx_eth_ops, .priv_auto_alloc_size = sizeof(struct smsc95xx_private), .platdata_auto_alloc_size = sizeof(struct eth_pdata), }; static const struct usb_device_id smsc95xx_eth_id_table[] = { { USB_DEVICE(0x05ac, 0x1402) }, { USB_DEVICE(0x0424, 0xec00) }, /* LAN9512/LAN9514 Ethernet */ { USB_DEVICE(0x0424, 0x9500) }, /* LAN9500 Ethernet */ { USB_DEVICE(0x0424, 0x9730) }, /* LAN9730 Ethernet (HSIC) */ { USB_DEVICE(0x0424, 0x9900) }, /* SMSC9500 USB Ethernet (SAL10) */ { USB_DEVICE(0x0424, 0x9e00) }, /* LAN9500A Ethernet */ { } /* Terminating entry */ }; U_BOOT_USB_DEVICE(smsc95xx_eth, smsc95xx_eth_id_table); #endif