1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /***************************************************************************
4 * Copyright (C) 2007-2010 SMSC
6 *****************************************************************************/
8 #include <linux/module.h>
9 #include <linux/kmod.h>
10 #include <linux/netdevice.h>
11 #include <linux/etherdevice.h>
12 #include <linux/ethtool.h>
13 #include <linux/mii.h>
14 #include <linux/usb.h>
15 #include <linux/bitrev.h>
16 #include <linux/crc16.h>
17 #include <linux/crc32.h>
18 #include <linux/usb/usbnet.h>
19 #include <linux/slab.h>
20 #include <linux/of_net.h>
23 #define SMSC_CHIPNAME "smsc75xx"
24 #define SMSC_DRIVER_VERSION "1.0.0"
25 #define HS_USB_PKT_SIZE (512)
26 #define FS_USB_PKT_SIZE (64)
27 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
28 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
29 #define DEFAULT_BULK_IN_DELAY (0x00002000)
30 #define MAX_SINGLE_PACKET_SIZE (9000)
31 #define LAN75XX_EEPROM_MAGIC (0x7500)
32 #define EEPROM_MAC_OFFSET (0x01)
33 #define DEFAULT_TX_CSUM_ENABLE (true)
34 #define DEFAULT_RX_CSUM_ENABLE (true)
35 #define SMSC75XX_INTERNAL_PHY_ID (1)
36 #define SMSC75XX_TX_OVERHEAD (8)
37 #define MAX_RX_FIFO_SIZE (20 * 1024)
38 #define MAX_TX_FIFO_SIZE (12 * 1024)
39 #define USB_VENDOR_ID_SMSC (0x0424)
40 #define USB_PRODUCT_ID_LAN7500 (0x7500)
41 #define USB_PRODUCT_ID_LAN7505 (0x7505)
43 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
44 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
46 #define SUSPEND_SUSPEND0 (0x01)
47 #define SUSPEND_SUSPEND1 (0x02)
48 #define SUSPEND_SUSPEND2 (0x04)
49 #define SUSPEND_SUSPEND3 (0x08)
50 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
51 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
53 struct smsc75xx_priv {
57 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN];
58 struct mutex dataport_mutex;
59 spinlock_t rfe_ctl_lock;
60 struct work_struct set_multicast;
65 struct usb_ctrlrequest req;
69 static bool turbo_mode = true;
70 module_param(turbo_mode, bool, 0644);
71 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
73 static int smsc75xx_link_ok_nopm(struct usbnet *dev);
74 static int smsc75xx_phy_gig_workaround(struct usbnet *dev);
76 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
81 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
88 fn = usbnet_read_cmd_nopm;
90 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
91 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
93 if (unlikely(ret < 0)) {
94 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
105 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
115 fn = usbnet_write_cmd;
117 fn = usbnet_write_cmd_nopm;
122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
125 if (unlikely(ret < 0))
126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
132 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
135 return __smsc75xx_read_reg(dev, index, data, 1);
138 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
141 return __smsc75xx_write_reg(dev, index, data, 1);
144 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
147 return __smsc75xx_read_reg(dev, index, data, 0);
150 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
153 return __smsc75xx_write_reg(dev, index, data, 0);
156 /* Loop until the read is completed with timeout
157 * called with phy_mutex held */
158 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
161 unsigned long start_time = jiffies;
166 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
168 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
172 if (!(val & MII_ACCESS_BUSY))
174 } while (!time_after(jiffies, start_time + HZ));
179 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
182 struct usbnet *dev = netdev_priv(netdev);
186 mutex_lock(&dev->phy_mutex);
188 /* confirm MII not busy */
189 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
191 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
195 /* set the address, index & direction (read from PHY) */
196 phy_id &= dev->mii.phy_id_mask;
197 idx &= dev->mii.reg_num_mask;
198 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
199 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
200 | MII_ACCESS_READ | MII_ACCESS_BUSY;
201 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
203 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
207 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
209 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
213 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
215 netdev_warn(dev->net, "Error reading MII_DATA\n");
219 ret = (u16)(val & 0xFFFF);
222 mutex_unlock(&dev->phy_mutex);
226 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
227 int idx, int regval, int in_pm)
229 struct usbnet *dev = netdev_priv(netdev);
233 mutex_lock(&dev->phy_mutex);
235 /* confirm MII not busy */
236 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
238 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
243 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
245 netdev_warn(dev->net, "Error writing MII_DATA\n");
249 /* set the address, index & direction (write to PHY) */
250 phy_id &= dev->mii.phy_id_mask;
251 idx &= dev->mii.reg_num_mask;
252 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
253 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
254 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
255 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
257 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
261 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
263 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
268 mutex_unlock(&dev->phy_mutex);
271 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
274 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
277 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
280 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
283 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
285 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
288 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
291 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
294 static int smsc75xx_wait_eeprom(struct usbnet *dev)
296 unsigned long start_time = jiffies;
301 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
303 netdev_warn(dev->net, "Error reading E2P_CMD\n");
307 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
310 } while (!time_after(jiffies, start_time + HZ));
312 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
313 netdev_warn(dev->net, "EEPROM read operation timeout\n");
320 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
322 unsigned long start_time = jiffies;
327 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
329 netdev_warn(dev->net, "Error reading E2P_CMD\n");
333 if (!(val & E2P_CMD_BUSY))
337 } while (!time_after(jiffies, start_time + HZ));
339 netdev_warn(dev->net, "EEPROM is busy\n");
343 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
352 ret = smsc75xx_eeprom_confirm_not_busy(dev);
356 for (i = 0; i < length; i++) {
357 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
358 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
360 netdev_warn(dev->net, "Error writing E2P_CMD\n");
364 ret = smsc75xx_wait_eeprom(dev);
368 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
370 netdev_warn(dev->net, "Error reading E2P_DATA\n");
374 data[i] = val & 0xFF;
381 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
390 ret = smsc75xx_eeprom_confirm_not_busy(dev);
394 /* Issue write/erase enable command */
395 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
396 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
398 netdev_warn(dev->net, "Error writing E2P_CMD\n");
402 ret = smsc75xx_wait_eeprom(dev);
406 for (i = 0; i < length; i++) {
408 /* Fill data register */
410 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
412 netdev_warn(dev->net, "Error writing E2P_DATA\n");
416 /* Send "write" command */
417 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
418 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
420 netdev_warn(dev->net, "Error writing E2P_CMD\n");
424 ret = smsc75xx_wait_eeprom(dev);
434 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
438 for (i = 0; i < 100; i++) {
440 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
442 netdev_warn(dev->net, "Error reading DP_SEL\n");
446 if (dp_sel & DP_SEL_DPRDY)
452 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
457 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
458 u32 length, u32 *buf)
460 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
464 mutex_lock(&pdata->dataport_mutex);
466 ret = smsc75xx_dataport_wait_not_busy(dev);
468 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
472 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
474 netdev_warn(dev->net, "Error reading DP_SEL\n");
478 dp_sel &= ~DP_SEL_RSEL;
479 dp_sel |= ram_select;
480 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
482 netdev_warn(dev->net, "Error writing DP_SEL\n");
486 for (i = 0; i < length; i++) {
487 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
489 netdev_warn(dev->net, "Error writing DP_ADDR\n");
493 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
495 netdev_warn(dev->net, "Error writing DP_DATA\n");
499 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
501 netdev_warn(dev->net, "Error writing DP_CMD\n");
505 ret = smsc75xx_dataport_wait_not_busy(dev);
507 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
513 mutex_unlock(&pdata->dataport_mutex);
517 /* returns hash bit number for given MAC address */
518 static u32 smsc75xx_hash(char addr[ETH_ALEN])
520 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
523 static void smsc75xx_deferred_multicast_write(struct work_struct *param)
525 struct smsc75xx_priv *pdata =
526 container_of(param, struct smsc75xx_priv, set_multicast);
527 struct usbnet *dev = pdata->dev;
530 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
533 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
534 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
536 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
538 netdev_warn(dev->net, "Error writing RFE_CRL\n");
541 static void smsc75xx_set_multicast(struct net_device *netdev)
543 struct usbnet *dev = netdev_priv(netdev);
544 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
548 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
551 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
552 pdata->rfe_ctl |= RFE_CTL_AB;
554 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
555 pdata->multicast_hash_table[i] = 0;
557 if (dev->net->flags & IFF_PROMISC) {
558 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
559 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
560 } else if (dev->net->flags & IFF_ALLMULTI) {
561 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
562 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
563 } else if (!netdev_mc_empty(dev->net)) {
564 struct netdev_hw_addr *ha;
566 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
568 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
570 netdev_for_each_mc_addr(ha, netdev) {
571 u32 bitnum = smsc75xx_hash(ha->addr);
572 pdata->multicast_hash_table[bitnum / 32] |=
573 (1 << (bitnum % 32));
576 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
577 pdata->rfe_ctl |= RFE_CTL_DPF;
580 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
582 /* defer register writes to a sleepable context */
583 schedule_work(&pdata->set_multicast);
586 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
587 u16 lcladv, u16 rmtadv)
589 u32 flow = 0, fct_flow = 0;
592 if (duplex == DUPLEX_FULL) {
593 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
595 if (cap & FLOW_CTRL_TX) {
596 flow = (FLOW_TX_FCEN | 0xFFFF);
597 /* set fct_flow thresholds to 20% and 80% */
598 fct_flow = (8 << 8) | 32;
601 if (cap & FLOW_CTRL_RX)
602 flow |= FLOW_RX_FCEN;
604 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
605 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
606 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
608 netif_dbg(dev, link, dev->net, "half duplex\n");
611 ret = smsc75xx_write_reg(dev, FLOW, flow);
613 netdev_warn(dev->net, "Error writing FLOW\n");
617 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
619 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
626 static int smsc75xx_link_reset(struct usbnet *dev)
628 struct mii_if_info *mii = &dev->mii;
629 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
633 /* write to clear phy interrupt status */
634 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
635 PHY_INT_SRC_CLEAR_ALL);
637 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
639 netdev_warn(dev->net, "Error writing INT_STS\n");
643 mii_check_media(mii, 1, 1);
644 mii_ethtool_gset(&dev->mii, &ecmd);
645 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
646 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
648 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
649 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
651 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
654 static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
658 if (urb->actual_length != 4) {
659 netdev_warn(dev->net, "unexpected urb length %d\n",
664 memcpy(&intdata, urb->transfer_buffer, 4);
665 le32_to_cpus(&intdata);
667 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
669 if (intdata & INT_ENP_PHY_INT)
670 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
672 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
676 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
678 return MAX_EEPROM_SIZE;
681 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
682 struct ethtool_eeprom *ee, u8 *data)
684 struct usbnet *dev = netdev_priv(netdev);
686 ee->magic = LAN75XX_EEPROM_MAGIC;
688 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
691 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
692 struct ethtool_eeprom *ee, u8 *data)
694 struct usbnet *dev = netdev_priv(netdev);
696 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
697 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
702 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
705 static void smsc75xx_ethtool_get_wol(struct net_device *net,
706 struct ethtool_wolinfo *wolinfo)
708 struct usbnet *dev = netdev_priv(net);
709 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
711 wolinfo->supported = SUPPORTED_WAKE;
712 wolinfo->wolopts = pdata->wolopts;
715 static int smsc75xx_ethtool_set_wol(struct net_device *net,
716 struct ethtool_wolinfo *wolinfo)
718 struct usbnet *dev = netdev_priv(net);
719 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
722 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
725 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
727 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
729 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
734 static const struct ethtool_ops smsc75xx_ethtool_ops = {
735 .get_link = usbnet_get_link,
736 .nway_reset = usbnet_nway_reset,
737 .get_drvinfo = usbnet_get_drvinfo,
738 .get_msglevel = usbnet_get_msglevel,
739 .set_msglevel = usbnet_set_msglevel,
740 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
741 .get_eeprom = smsc75xx_ethtool_get_eeprom,
742 .set_eeprom = smsc75xx_ethtool_set_eeprom,
743 .get_wol = smsc75xx_ethtool_get_wol,
744 .set_wol = smsc75xx_ethtool_set_wol,
745 .get_link_ksettings = usbnet_get_link_ksettings,
746 .set_link_ksettings = usbnet_set_link_ksettings,
749 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
751 struct usbnet *dev = netdev_priv(netdev);
753 if (!netif_running(netdev))
756 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
759 static void smsc75xx_init_mac_address(struct usbnet *dev)
763 /* maybe the boot loader passed the MAC address in devicetree */
764 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
765 if (!IS_ERR(mac_addr)) {
766 ether_addr_copy(dev->net->dev_addr, mac_addr);
770 /* try reading mac address from EEPROM */
771 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
772 dev->net->dev_addr) == 0) {
773 if (is_valid_ether_addr(dev->net->dev_addr)) {
774 /* eeprom values are valid so use them */
775 netif_dbg(dev, ifup, dev->net,
776 "MAC address read from EEPROM\n");
781 /* no useful static MAC address found. generate a random one */
782 eth_hw_addr_random(dev->net);
783 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
786 static int smsc75xx_set_mac_address(struct usbnet *dev)
788 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
789 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
790 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
792 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
794 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
798 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
800 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
804 addr_hi |= ADDR_FILTX_FB_VALID;
805 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
807 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
811 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
813 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
818 static int smsc75xx_phy_initialize(struct usbnet *dev)
820 int bmcr, ret, timeout = 0;
822 /* Initialize MII structure */
823 dev->mii.dev = dev->net;
824 dev->mii.mdio_read = smsc75xx_mdio_read;
825 dev->mii.mdio_write = smsc75xx_mdio_write;
826 dev->mii.phy_id_mask = 0x1f;
827 dev->mii.reg_num_mask = 0x1f;
828 dev->mii.supports_gmii = 1;
829 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
831 /* reset phy and wait for reset to complete */
832 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
836 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
838 netdev_warn(dev->net, "Error reading MII_BMCR\n");
842 } while ((bmcr & BMCR_RESET) && (timeout < 100));
844 if (timeout >= 100) {
845 netdev_warn(dev->net, "timeout on PHY Reset\n");
849 /* phy workaround for gig link */
850 smsc75xx_phy_gig_workaround(dev);
852 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
853 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
854 ADVERTISE_PAUSE_ASYM);
855 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
858 /* read and write to clear phy interrupt status */
859 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
861 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
865 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
867 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
868 PHY_INT_MASK_DEFAULT);
869 mii_nway_restart(&dev->mii);
871 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
875 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
881 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
883 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
887 rxenabled = ((buf & MAC_RX_RXEN) != 0);
891 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
893 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
898 /* add 4 to size for FCS */
899 buf &= ~MAC_RX_MAX_SIZE;
900 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
902 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
904 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
910 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
912 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
920 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
922 struct usbnet *dev = netdev_priv(netdev);
925 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
927 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
931 return usbnet_change_mtu(netdev, new_mtu);
934 /* Enable or disable Rx checksum offload engine */
935 static int smsc75xx_set_features(struct net_device *netdev,
936 netdev_features_t features)
938 struct usbnet *dev = netdev_priv(netdev);
939 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
943 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
945 if (features & NETIF_F_RXCSUM)
946 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
948 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
950 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
951 /* it's racing here! */
953 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
955 netdev_warn(dev->net, "Error writing RFE_CTL\n");
961 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
969 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
972 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
976 if (buf & PMT_CTL_DEV_RDY)
981 } while (timeout < 100);
983 netdev_warn(dev->net, "timeout waiting for device ready\n");
987 static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
989 struct mii_if_info *mii = &dev->mii;
990 int ret = 0, timeout = 0;
991 u32 buf, link_up = 0;
993 /* Set the phy in Gig loopback */
994 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
996 /* Wait for the link up */
998 link_up = smsc75xx_link_ok_nopm(dev);
999 usleep_range(10000, 20000);
1001 } while ((!link_up) && (timeout < 1000));
1003 if (timeout >= 1000) {
1004 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1009 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1011 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1015 buf |= PMT_CTL_PHY_RST;
1017 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1019 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1025 usleep_range(10000, 20000);
1026 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1028 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1033 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1035 if (timeout >= 100) {
1036 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1043 static int smsc75xx_reset(struct usbnet *dev)
1045 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1047 int ret = 0, timeout;
1049 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1051 ret = smsc75xx_wait_ready(dev, 0);
1053 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1057 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1059 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1065 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1067 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1074 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1076 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1080 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1082 if (timeout >= 100) {
1083 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1087 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1089 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1091 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1095 buf |= PMT_CTL_PHY_RST;
1097 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1099 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1106 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1108 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1112 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1114 if (timeout >= 100) {
1115 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1119 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1121 ret = smsc75xx_set_mac_address(dev);
1123 netdev_warn(dev->net, "Failed to set mac address\n");
1127 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1128 dev->net->dev_addr);
1130 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1132 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1136 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1141 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1143 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1147 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1149 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1153 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1158 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1159 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1160 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1161 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1163 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1164 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1167 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1168 (ulong)dev->rx_urb_size);
1170 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1172 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1176 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1178 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1182 netif_dbg(dev, ifup, dev->net,
1183 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1185 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1187 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1191 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1193 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1197 netif_dbg(dev, ifup, dev->net,
1198 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1201 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1203 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1207 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1209 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1211 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1213 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1217 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1219 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1223 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1226 /* set FIFO sizes */
1227 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1228 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1230 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1234 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1236 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1237 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1239 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1243 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1245 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1247 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1251 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1253 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1257 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1259 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1261 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1265 /* only set default GPIO/LED settings if no EEPROM is detected */
1266 if (!(buf & E2P_CMD_LOADED)) {
1267 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1269 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1273 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1274 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1276 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1278 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1283 ret = smsc75xx_write_reg(dev, FLOW, 0);
1285 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1289 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1291 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1295 /* Don't need rfe_ctl_lock during initialisation */
1296 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1298 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1302 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1304 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1306 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1310 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1312 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1316 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1319 /* Enable or disable checksum offload engines */
1320 smsc75xx_set_features(dev->net, dev->net->features);
1322 smsc75xx_set_multicast(dev->net);
1324 ret = smsc75xx_phy_initialize(dev);
1326 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1330 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1332 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1336 /* enable PHY interrupts */
1337 buf |= INT_ENP_PHY_INT;
1339 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1341 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1345 /* allow mac to detect speed and duplex from phy */
1346 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1348 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1352 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1353 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1355 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1359 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1361 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1367 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1369 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1373 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1375 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1377 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1381 buf |= FCT_TX_CTL_EN;
1383 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1385 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1389 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1391 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1393 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1397 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1399 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1405 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1407 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1411 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1413 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1415 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1419 buf |= FCT_RX_CTL_EN;
1421 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1423 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1427 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1429 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1433 static const struct net_device_ops smsc75xx_netdev_ops = {
1434 .ndo_open = usbnet_open,
1435 .ndo_stop = usbnet_stop,
1436 .ndo_start_xmit = usbnet_start_xmit,
1437 .ndo_tx_timeout = usbnet_tx_timeout,
1438 .ndo_get_stats64 = usbnet_get_stats64,
1439 .ndo_change_mtu = smsc75xx_change_mtu,
1440 .ndo_set_mac_address = eth_mac_addr,
1441 .ndo_validate_addr = eth_validate_addr,
1442 .ndo_do_ioctl = smsc75xx_ioctl,
1443 .ndo_set_rx_mode = smsc75xx_set_multicast,
1444 .ndo_set_features = smsc75xx_set_features,
1447 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1449 struct smsc75xx_priv *pdata = NULL;
1452 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1454 ret = usbnet_get_endpoints(dev, intf);
1456 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1460 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1463 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1469 spin_lock_init(&pdata->rfe_ctl_lock);
1470 mutex_init(&pdata->dataport_mutex);
1472 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1474 if (DEFAULT_TX_CSUM_ENABLE)
1475 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1477 if (DEFAULT_RX_CSUM_ENABLE)
1478 dev->net->features |= NETIF_F_RXCSUM;
1480 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1483 ret = smsc75xx_wait_ready(dev, 0);
1485 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1489 smsc75xx_init_mac_address(dev);
1491 /* Init all registers */
1492 ret = smsc75xx_reset(dev);
1494 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1498 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1499 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1500 dev->net->flags |= IFF_MULTICAST;
1501 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1502 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1503 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE;
1507 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1509 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1511 cancel_work_sync(&pdata->set_multicast);
1512 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1519 static u16 smsc_crc(const u8 *buffer, size_t len)
1521 return bitrev16(crc16(0xFFFF, buffer, len));
1524 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1527 int cfg_base = WUF_CFGX + filter * 4;
1528 int mask_base = WUF_MASKX + filter * 16;
1531 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1533 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1537 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1539 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1543 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1545 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1549 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1551 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1555 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1557 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1564 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1566 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1570 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1572 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1576 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1577 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1579 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1581 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1585 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1590 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1592 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1596 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1598 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1602 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1603 val |= PMT_CTL_SUS_MODE_1;
1605 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1607 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1611 /* clear wol status, enable energy detection */
1612 val &= ~PMT_CTL_WUPS;
1613 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1615 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1617 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1621 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1626 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1628 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1632 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1634 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1638 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1639 val |= PMT_CTL_SUS_MODE_2;
1641 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1643 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1647 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1652 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1654 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1658 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1660 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1664 if (val & FCT_RX_CTL_RXUSED) {
1665 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1669 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1671 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1675 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1676 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1678 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1680 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1684 /* clear wol status */
1685 val &= ~PMT_CTL_WUPS;
1686 val |= PMT_CTL_WUPS_WOL;
1688 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1690 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1694 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1699 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1701 struct mii_if_info *mii = &dev->mii;
1704 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1707 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1709 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1713 /* enable interrupt source */
1714 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1716 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1722 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1727 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1729 struct mii_if_info *mii = &dev->mii;
1732 /* first, a dummy read, needed to latch some MII phys */
1733 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1735 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1739 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1741 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1745 return !!(ret & BMSR_LSTATUS);
1748 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1752 if (!netif_running(dev->net)) {
1753 /* interface is ifconfig down so fully power down hw */
1754 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1755 return smsc75xx_enter_suspend2(dev);
1759 /* link is down so enter EDPD mode */
1760 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1762 /* enable PHY wakeup events for if cable is attached */
1763 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1764 PHY_INT_MASK_ANEG_COMP);
1766 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1770 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1771 return smsc75xx_enter_suspend1(dev);
1774 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1775 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1776 PHY_INT_MASK_LINK_DOWN);
1778 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1782 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1783 return smsc75xx_enter_suspend3(dev);
1786 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1788 struct usbnet *dev = usb_get_intfdata(intf);
1789 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1793 ret = usbnet_suspend(intf, message);
1795 netdev_warn(dev->net, "usbnet_suspend error\n");
1799 if (pdata->suspend_flags) {
1800 netdev_warn(dev->net, "error during last resume\n");
1801 pdata->suspend_flags = 0;
1804 /* determine if link is up using only _nopm functions */
1805 link_up = smsc75xx_link_ok_nopm(dev);
1807 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1808 ret = smsc75xx_autosuspend(dev, link_up);
1812 /* if we get this far we're not autosuspending */
1813 /* if no wol options set, or if link is down and we're not waking on
1814 * PHY activity, enter lowest power SUSPEND2 mode
1816 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1817 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1818 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1820 /* disable energy detect (link up) & wake up events */
1821 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1823 netdev_warn(dev->net, "Error reading WUCSR\n");
1827 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1829 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1831 netdev_warn(dev->net, "Error writing WUCSR\n");
1835 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1837 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1841 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1843 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1845 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1849 ret = smsc75xx_enter_suspend2(dev);
1853 if (pdata->wolopts & WAKE_PHY) {
1854 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1855 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1857 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1861 /* if link is down then configure EDPD and enter SUSPEND1,
1862 * otherwise enter SUSPEND0 below
1865 struct mii_if_info *mii = &dev->mii;
1866 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1868 /* enable energy detect power-down mode */
1869 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1872 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1876 ret |= MODE_CTRL_STS_EDPWRDOWN;
1878 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1879 PHY_MODE_CTRL_STS, ret);
1881 /* enter SUSPEND1 mode */
1882 ret = smsc75xx_enter_suspend1(dev);
1887 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1890 /* disable all filters */
1891 for (i = 0; i < WUF_NUM; i++) {
1892 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1894 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1899 if (pdata->wolopts & WAKE_MCAST) {
1900 const u8 mcast[] = {0x01, 0x00, 0x5E};
1901 netdev_info(dev->net, "enabling multicast detection\n");
1903 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1904 | smsc_crc(mcast, 3);
1905 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1907 netdev_warn(dev->net, "Error writing wakeup filter\n");
1912 if (pdata->wolopts & WAKE_ARP) {
1913 const u8 arp[] = {0x08, 0x06};
1914 netdev_info(dev->net, "enabling ARP detection\n");
1916 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1918 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1920 netdev_warn(dev->net, "Error writing wakeup filter\n");
1925 /* clear any pending pattern match packet status */
1926 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1928 netdev_warn(dev->net, "Error reading WUCSR\n");
1934 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1936 netdev_warn(dev->net, "Error writing WUCSR\n");
1940 netdev_info(dev->net, "enabling packet match detection\n");
1941 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1943 netdev_warn(dev->net, "Error reading WUCSR\n");
1949 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1951 netdev_warn(dev->net, "Error writing WUCSR\n");
1955 netdev_info(dev->net, "disabling packet match detection\n");
1956 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1958 netdev_warn(dev->net, "Error reading WUCSR\n");
1964 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1966 netdev_warn(dev->net, "Error writing WUCSR\n");
1971 /* disable magic, bcast & unicast wakeup sources */
1972 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1974 netdev_warn(dev->net, "Error reading WUCSR\n");
1978 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1980 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1982 netdev_warn(dev->net, "Error writing WUCSR\n");
1986 if (pdata->wolopts & WAKE_PHY) {
1987 netdev_info(dev->net, "enabling PHY wakeup\n");
1989 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1991 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1995 /* clear wol status, enable energy detection */
1996 val &= ~PMT_CTL_WUPS;
1997 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1999 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2001 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2006 if (pdata->wolopts & WAKE_MAGIC) {
2007 netdev_info(dev->net, "enabling magic packet wakeup\n");
2008 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2010 netdev_warn(dev->net, "Error reading WUCSR\n");
2014 /* clear any pending magic packet status */
2015 val |= WUCSR_MPR | WUCSR_MPEN;
2017 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2019 netdev_warn(dev->net, "Error writing WUCSR\n");
2024 if (pdata->wolopts & WAKE_BCAST) {
2025 netdev_info(dev->net, "enabling broadcast detection\n");
2026 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2028 netdev_warn(dev->net, "Error reading WUCSR\n");
2032 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2034 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2036 netdev_warn(dev->net, "Error writing WUCSR\n");
2041 if (pdata->wolopts & WAKE_UCAST) {
2042 netdev_info(dev->net, "enabling unicast detection\n");
2043 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2045 netdev_warn(dev->net, "Error reading WUCSR\n");
2049 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2051 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2053 netdev_warn(dev->net, "Error writing WUCSR\n");
2058 /* enable receiver to enable frame reception */
2059 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2061 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2067 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2069 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2073 /* some wol options are enabled, so enter SUSPEND0 */
2074 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2075 ret = smsc75xx_enter_suspend0(dev);
2079 * TODO: resume() might need to handle the suspend failure
2082 if (ret && PMSG_IS_AUTO(message))
2083 usbnet_resume(intf);
2087 static int smsc75xx_resume(struct usb_interface *intf)
2089 struct usbnet *dev = usb_get_intfdata(intf);
2090 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2091 u8 suspend_flags = pdata->suspend_flags;
2095 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2097 /* do this first to ensure it's cleared even in error case */
2098 pdata->suspend_flags = 0;
2100 if (suspend_flags & SUSPEND_ALLMODES) {
2101 /* Disable wakeup sources */
2102 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2104 netdev_warn(dev->net, "Error reading WUCSR\n");
2108 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2111 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2113 netdev_warn(dev->net, "Error writing WUCSR\n");
2117 /* clear wake-up status */
2118 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2120 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2124 val &= ~PMT_CTL_WOL_EN;
2125 val |= PMT_CTL_WUPS;
2127 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2129 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2134 if (suspend_flags & SUSPEND_SUSPEND2) {
2135 netdev_info(dev->net, "resuming from SUSPEND2\n");
2137 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2139 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2143 val |= PMT_CTL_PHY_PWRUP;
2145 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2147 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2152 ret = smsc75xx_wait_ready(dev, 1);
2154 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2158 return usbnet_resume(intf);
2161 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2162 u32 rx_cmd_a, u32 rx_cmd_b)
2164 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2165 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2166 skb->ip_summed = CHECKSUM_NONE;
2168 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2169 skb->ip_summed = CHECKSUM_COMPLETE;
2173 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2175 /* This check is no longer done by usbnet */
2176 if (skb->len < dev->net->hard_header_len)
2179 while (skb->len > 0) {
2180 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2181 struct sk_buff *ax_skb;
2182 unsigned char *packet;
2184 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2185 le32_to_cpus(&rx_cmd_a);
2188 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2189 le32_to_cpus(&rx_cmd_b);
2190 skb_pull(skb, 4 + RXW_PADDING);
2194 /* get the packet length */
2195 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2196 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2198 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2199 netif_dbg(dev, rx_err, dev->net,
2200 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2201 dev->net->stats.rx_errors++;
2202 dev->net->stats.rx_dropped++;
2204 if (rx_cmd_a & RX_CMD_A_FCS)
2205 dev->net->stats.rx_crc_errors++;
2206 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2207 dev->net->stats.rx_frame_errors++;
2209 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2210 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2211 netif_dbg(dev, rx_err, dev->net,
2212 "size err rx_cmd_a=0x%08x\n",
2217 /* last frame in this batch */
2218 if (skb->len == size) {
2219 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2222 skb_trim(skb, skb->len - 4); /* remove fcs */
2223 skb->truesize = size + sizeof(struct sk_buff);
2228 ax_skb = skb_clone(skb, GFP_ATOMIC);
2229 if (unlikely(!ax_skb)) {
2230 netdev_warn(dev->net, "Error allocating skb\n");
2235 ax_skb->data = packet;
2236 skb_set_tail_pointer(ax_skb, size);
2238 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2241 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2242 ax_skb->truesize = size + sizeof(struct sk_buff);
2244 usbnet_skb_return(dev, ax_skb);
2247 skb_pull(skb, size);
2249 /* padding bytes before the next frame starts */
2251 skb_pull(skb, align_count);
2257 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2258 struct sk_buff *skb, gfp_t flags)
2260 u32 tx_cmd_a, tx_cmd_b;
2262 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2263 dev_kfree_skb_any(skb);
2267 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2269 if (skb->ip_summed == CHECKSUM_PARTIAL)
2270 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2272 if (skb_is_gso(skb)) {
2273 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2274 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2276 tx_cmd_a |= TX_CMD_A_LSO;
2282 cpu_to_le32s(&tx_cmd_b);
2283 memcpy(skb->data, &tx_cmd_b, 4);
2286 cpu_to_le32s(&tx_cmd_a);
2287 memcpy(skb->data, &tx_cmd_a, 4);
2292 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2294 dev->intf->needs_remote_wakeup = on;
2298 static const struct driver_info smsc75xx_info = {
2299 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2300 .bind = smsc75xx_bind,
2301 .unbind = smsc75xx_unbind,
2302 .link_reset = smsc75xx_link_reset,
2303 .reset = smsc75xx_reset,
2304 .rx_fixup = smsc75xx_rx_fixup,
2305 .tx_fixup = smsc75xx_tx_fixup,
2306 .status = smsc75xx_status,
2307 .manage_power = smsc75xx_manage_power,
2308 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2311 static const struct usb_device_id products[] = {
2313 /* SMSC7500 USB Gigabit Ethernet Device */
2314 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2315 .driver_info = (unsigned long) &smsc75xx_info,
2318 /* SMSC7500 USB Gigabit Ethernet Device */
2319 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2320 .driver_info = (unsigned long) &smsc75xx_info,
2324 MODULE_DEVICE_TABLE(usb, products);
2326 static struct usb_driver smsc75xx_driver = {
2327 .name = SMSC_CHIPNAME,
2328 .id_table = products,
2329 .probe = usbnet_probe,
2330 .suspend = smsc75xx_suspend,
2331 .resume = smsc75xx_resume,
2332 .reset_resume = smsc75xx_resume,
2333 .disconnect = usbnet_disconnect,
2334 .disable_hub_initiated_lpm = 1,
2335 .supports_autosuspend = 1,
2338 module_usb_driver(smsc75xx_driver);
2340 MODULE_AUTHOR("Nancy Lin");
2341 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2342 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2343 MODULE_LICENSE("GPL");