1 /***************************************************************************
3 * Copyright (C) 2007-2010 SMSC
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *****************************************************************************/
20 #include <linux/module.h>
21 #include <linux/kmod.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24 #include <linux/ethtool.h>
25 #include <linux/mii.h>
26 #include <linux/usb.h>
27 #include <linux/bitrev.h>
28 #include <linux/crc16.h>
29 #include <linux/crc32.h>
30 #include <linux/usb/usbnet.h>
31 #include <linux/slab.h>
32 #include <linux/of_net.h>
35 #define SMSC_CHIPNAME "smsc75xx"
36 #define SMSC_DRIVER_VERSION "1.0.0"
37 #define HS_USB_PKT_SIZE (512)
38 #define FS_USB_PKT_SIZE (64)
39 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
40 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
41 #define DEFAULT_BULK_IN_DELAY (0x00002000)
42 #define MAX_SINGLE_PACKET_SIZE (9000)
43 #define LAN75XX_EEPROM_MAGIC (0x7500)
44 #define EEPROM_MAC_OFFSET (0x01)
45 #define DEFAULT_TX_CSUM_ENABLE (true)
46 #define DEFAULT_RX_CSUM_ENABLE (true)
47 #define SMSC75XX_INTERNAL_PHY_ID (1)
48 #define SMSC75XX_TX_OVERHEAD (8)
49 #define MAX_RX_FIFO_SIZE (20 * 1024)
50 #define MAX_TX_FIFO_SIZE (12 * 1024)
51 #define USB_VENDOR_ID_SMSC (0x0424)
52 #define USB_PRODUCT_ID_LAN7500 (0x7500)
53 #define USB_PRODUCT_ID_LAN7505 (0x7505)
55 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
56 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
58 #define SUSPEND_SUSPEND0 (0x01)
59 #define SUSPEND_SUSPEND1 (0x02)
60 #define SUSPEND_SUSPEND2 (0x04)
61 #define SUSPEND_SUSPEND3 (0x08)
62 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
63 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
65 struct smsc75xx_priv {
69 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN];
70 struct mutex dataport_mutex;
71 spinlock_t rfe_ctl_lock;
72 struct work_struct set_multicast;
77 struct usb_ctrlrequest req;
81 static bool turbo_mode = true;
82 module_param(turbo_mode, bool, 0644);
83 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
85 static int smsc75xx_link_ok_nopm(struct usbnet *dev);
86 static int smsc75xx_phy_gig_workaround(struct usbnet *dev);
88 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
93 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
100 fn = usbnet_read_cmd_nopm;
102 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
103 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
105 if (unlikely(ret < 0)) {
106 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
117 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
122 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
127 fn = usbnet_write_cmd;
129 fn = usbnet_write_cmd_nopm;
134 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
135 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
137 if (unlikely(ret < 0))
138 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
144 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
147 return __smsc75xx_read_reg(dev, index, data, 1);
150 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
153 return __smsc75xx_write_reg(dev, index, data, 1);
156 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
159 return __smsc75xx_read_reg(dev, index, data, 0);
162 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
165 return __smsc75xx_write_reg(dev, index, data, 0);
168 /* Loop until the read is completed with timeout
169 * called with phy_mutex held */
170 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
173 unsigned long start_time = jiffies;
178 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
180 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
184 if (!(val & MII_ACCESS_BUSY))
186 } while (!time_after(jiffies, start_time + HZ));
191 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
194 struct usbnet *dev = netdev_priv(netdev);
198 mutex_lock(&dev->phy_mutex);
200 /* confirm MII not busy */
201 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
203 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
207 /* set the address, index & direction (read from PHY) */
208 phy_id &= dev->mii.phy_id_mask;
209 idx &= dev->mii.reg_num_mask;
210 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
211 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
212 | MII_ACCESS_READ | MII_ACCESS_BUSY;
213 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
215 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
219 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
221 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
225 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
227 netdev_warn(dev->net, "Error reading MII_DATA\n");
231 ret = (u16)(val & 0xFFFF);
234 mutex_unlock(&dev->phy_mutex);
238 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
239 int idx, int regval, int in_pm)
241 struct usbnet *dev = netdev_priv(netdev);
245 mutex_lock(&dev->phy_mutex);
247 /* confirm MII not busy */
248 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
250 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
255 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
257 netdev_warn(dev->net, "Error writing MII_DATA\n");
261 /* set the address, index & direction (write to PHY) */
262 phy_id &= dev->mii.phy_id_mask;
263 idx &= dev->mii.reg_num_mask;
264 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
265 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
266 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
267 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
269 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
273 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
275 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
280 mutex_unlock(&dev->phy_mutex);
283 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
286 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
289 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
292 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
295 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
297 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
300 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
303 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
306 static int smsc75xx_wait_eeprom(struct usbnet *dev)
308 unsigned long start_time = jiffies;
313 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
315 netdev_warn(dev->net, "Error reading E2P_CMD\n");
319 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
322 } while (!time_after(jiffies, start_time + HZ));
324 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
325 netdev_warn(dev->net, "EEPROM read operation timeout\n");
332 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
334 unsigned long start_time = jiffies;
339 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
341 netdev_warn(dev->net, "Error reading E2P_CMD\n");
345 if (!(val & E2P_CMD_BUSY))
349 } while (!time_after(jiffies, start_time + HZ));
351 netdev_warn(dev->net, "EEPROM is busy\n");
355 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
364 ret = smsc75xx_eeprom_confirm_not_busy(dev);
368 for (i = 0; i < length; i++) {
369 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
370 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
372 netdev_warn(dev->net, "Error writing E2P_CMD\n");
376 ret = smsc75xx_wait_eeprom(dev);
380 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
382 netdev_warn(dev->net, "Error reading E2P_DATA\n");
386 data[i] = val & 0xFF;
393 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
402 ret = smsc75xx_eeprom_confirm_not_busy(dev);
406 /* Issue write/erase enable command */
407 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
408 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
410 netdev_warn(dev->net, "Error writing E2P_CMD\n");
414 ret = smsc75xx_wait_eeprom(dev);
418 for (i = 0; i < length; i++) {
420 /* Fill data register */
422 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
424 netdev_warn(dev->net, "Error writing E2P_DATA\n");
428 /* Send "write" command */
429 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
430 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
432 netdev_warn(dev->net, "Error writing E2P_CMD\n");
436 ret = smsc75xx_wait_eeprom(dev);
446 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
450 for (i = 0; i < 100; i++) {
452 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
454 netdev_warn(dev->net, "Error reading DP_SEL\n");
458 if (dp_sel & DP_SEL_DPRDY)
464 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
469 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
470 u32 length, u32 *buf)
472 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
476 mutex_lock(&pdata->dataport_mutex);
478 ret = smsc75xx_dataport_wait_not_busy(dev);
480 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
484 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
486 netdev_warn(dev->net, "Error reading DP_SEL\n");
490 dp_sel &= ~DP_SEL_RSEL;
491 dp_sel |= ram_select;
492 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
494 netdev_warn(dev->net, "Error writing DP_SEL\n");
498 for (i = 0; i < length; i++) {
499 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
501 netdev_warn(dev->net, "Error writing DP_ADDR\n");
505 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
507 netdev_warn(dev->net, "Error writing DP_DATA\n");
511 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
513 netdev_warn(dev->net, "Error writing DP_CMD\n");
517 ret = smsc75xx_dataport_wait_not_busy(dev);
519 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
525 mutex_unlock(&pdata->dataport_mutex);
529 /* returns hash bit number for given MAC address */
530 static u32 smsc75xx_hash(char addr[ETH_ALEN])
532 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
535 static void smsc75xx_deferred_multicast_write(struct work_struct *param)
537 struct smsc75xx_priv *pdata =
538 container_of(param, struct smsc75xx_priv, set_multicast);
539 struct usbnet *dev = pdata->dev;
542 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
545 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
546 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
548 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
550 netdev_warn(dev->net, "Error writing RFE_CRL\n");
553 static void smsc75xx_set_multicast(struct net_device *netdev)
555 struct usbnet *dev = netdev_priv(netdev);
556 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
560 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
563 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
564 pdata->rfe_ctl |= RFE_CTL_AB;
566 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
567 pdata->multicast_hash_table[i] = 0;
569 if (dev->net->flags & IFF_PROMISC) {
570 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
571 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
572 } else if (dev->net->flags & IFF_ALLMULTI) {
573 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
574 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
575 } else if (!netdev_mc_empty(dev->net)) {
576 struct netdev_hw_addr *ha;
578 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
580 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
582 netdev_for_each_mc_addr(ha, netdev) {
583 u32 bitnum = smsc75xx_hash(ha->addr);
584 pdata->multicast_hash_table[bitnum / 32] |=
585 (1 << (bitnum % 32));
588 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
589 pdata->rfe_ctl |= RFE_CTL_DPF;
592 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
594 /* defer register writes to a sleepable context */
595 schedule_work(&pdata->set_multicast);
598 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
599 u16 lcladv, u16 rmtadv)
601 u32 flow = 0, fct_flow = 0;
604 if (duplex == DUPLEX_FULL) {
605 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
607 if (cap & FLOW_CTRL_TX) {
608 flow = (FLOW_TX_FCEN | 0xFFFF);
609 /* set fct_flow thresholds to 20% and 80% */
610 fct_flow = (8 << 8) | 32;
613 if (cap & FLOW_CTRL_RX)
614 flow |= FLOW_RX_FCEN;
616 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
617 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
618 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
620 netif_dbg(dev, link, dev->net, "half duplex\n");
623 ret = smsc75xx_write_reg(dev, FLOW, flow);
625 netdev_warn(dev->net, "Error writing FLOW\n");
629 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
631 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
638 static int smsc75xx_link_reset(struct usbnet *dev)
640 struct mii_if_info *mii = &dev->mii;
641 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
645 /* write to clear phy interrupt status */
646 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
647 PHY_INT_SRC_CLEAR_ALL);
649 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
651 netdev_warn(dev->net, "Error writing INT_STS\n");
655 mii_check_media(mii, 1, 1);
656 mii_ethtool_gset(&dev->mii, &ecmd);
657 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
658 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
660 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
661 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
663 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
666 static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
670 if (urb->actual_length != 4) {
671 netdev_warn(dev->net, "unexpected urb length %d\n",
676 memcpy(&intdata, urb->transfer_buffer, 4);
677 le32_to_cpus(&intdata);
679 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
681 if (intdata & INT_ENP_PHY_INT)
682 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
684 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
688 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
690 return MAX_EEPROM_SIZE;
693 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
694 struct ethtool_eeprom *ee, u8 *data)
696 struct usbnet *dev = netdev_priv(netdev);
698 ee->magic = LAN75XX_EEPROM_MAGIC;
700 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
703 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
704 struct ethtool_eeprom *ee, u8 *data)
706 struct usbnet *dev = netdev_priv(netdev);
708 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
709 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
714 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
717 static void smsc75xx_ethtool_get_wol(struct net_device *net,
718 struct ethtool_wolinfo *wolinfo)
720 struct usbnet *dev = netdev_priv(net);
721 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
723 wolinfo->supported = SUPPORTED_WAKE;
724 wolinfo->wolopts = pdata->wolopts;
727 static int smsc75xx_ethtool_set_wol(struct net_device *net,
728 struct ethtool_wolinfo *wolinfo)
730 struct usbnet *dev = netdev_priv(net);
731 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
734 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
737 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
739 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
741 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
746 static const struct ethtool_ops smsc75xx_ethtool_ops = {
747 .get_link = usbnet_get_link,
748 .nway_reset = usbnet_nway_reset,
749 .get_drvinfo = usbnet_get_drvinfo,
750 .get_msglevel = usbnet_get_msglevel,
751 .set_msglevel = usbnet_set_msglevel,
752 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
753 .get_eeprom = smsc75xx_ethtool_get_eeprom,
754 .set_eeprom = smsc75xx_ethtool_set_eeprom,
755 .get_wol = smsc75xx_ethtool_get_wol,
756 .set_wol = smsc75xx_ethtool_set_wol,
757 .get_link_ksettings = usbnet_get_link_ksettings,
758 .set_link_ksettings = usbnet_set_link_ksettings,
761 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
763 struct usbnet *dev = netdev_priv(netdev);
765 if (!netif_running(netdev))
768 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
771 static void smsc75xx_init_mac_address(struct usbnet *dev)
775 /* maybe the boot loader passed the MAC address in devicetree */
776 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
778 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN);
782 /* try reading mac address from EEPROM */
783 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
784 dev->net->dev_addr) == 0) {
785 if (is_valid_ether_addr(dev->net->dev_addr)) {
786 /* eeprom values are valid so use them */
787 netif_dbg(dev, ifup, dev->net,
788 "MAC address read from EEPROM\n");
793 /* no useful static MAC address found. generate a random one */
794 eth_hw_addr_random(dev->net);
795 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
798 static int smsc75xx_set_mac_address(struct usbnet *dev)
800 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
801 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
802 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
804 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
806 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
810 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
812 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
816 addr_hi |= ADDR_FILTX_FB_VALID;
817 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
819 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
823 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
825 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
830 static int smsc75xx_phy_initialize(struct usbnet *dev)
832 int bmcr, ret, timeout = 0;
834 /* Initialize MII structure */
835 dev->mii.dev = dev->net;
836 dev->mii.mdio_read = smsc75xx_mdio_read;
837 dev->mii.mdio_write = smsc75xx_mdio_write;
838 dev->mii.phy_id_mask = 0x1f;
839 dev->mii.reg_num_mask = 0x1f;
840 dev->mii.supports_gmii = 1;
841 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
843 /* reset phy and wait for reset to complete */
844 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
848 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
850 netdev_warn(dev->net, "Error reading MII_BMCR\n");
854 } while ((bmcr & BMCR_RESET) && (timeout < 100));
856 if (timeout >= 100) {
857 netdev_warn(dev->net, "timeout on PHY Reset\n");
861 /* phy workaround for gig link */
862 smsc75xx_phy_gig_workaround(dev);
864 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
865 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
866 ADVERTISE_PAUSE_ASYM);
867 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
870 /* read and write to clear phy interrupt status */
871 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
873 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
877 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
879 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
880 PHY_INT_MASK_DEFAULT);
881 mii_nway_restart(&dev->mii);
883 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
887 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
893 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
895 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
899 rxenabled = ((buf & MAC_RX_RXEN) != 0);
903 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
905 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
910 /* add 4 to size for FCS */
911 buf &= ~MAC_RX_MAX_SIZE;
912 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
914 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
916 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
922 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
924 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
932 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
934 struct usbnet *dev = netdev_priv(netdev);
937 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
939 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
943 return usbnet_change_mtu(netdev, new_mtu);
946 /* Enable or disable Rx checksum offload engine */
947 static int smsc75xx_set_features(struct net_device *netdev,
948 netdev_features_t features)
950 struct usbnet *dev = netdev_priv(netdev);
951 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
955 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
957 if (features & NETIF_F_RXCSUM)
958 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
960 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
962 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
963 /* it's racing here! */
965 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
967 netdev_warn(dev->net, "Error writing RFE_CTL\n");
973 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
981 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
984 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
988 if (buf & PMT_CTL_DEV_RDY)
993 } while (timeout < 100);
995 netdev_warn(dev->net, "timeout waiting for device ready\n");
999 static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
1001 struct mii_if_info *mii = &dev->mii;
1002 int ret = 0, timeout = 0;
1003 u32 buf, link_up = 0;
1005 /* Set the phy in Gig loopback */
1006 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
1008 /* Wait for the link up */
1010 link_up = smsc75xx_link_ok_nopm(dev);
1011 usleep_range(10000, 20000);
1013 } while ((!link_up) && (timeout < 1000));
1015 if (timeout >= 1000) {
1016 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1021 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1023 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1027 buf |= PMT_CTL_PHY_RST;
1029 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1031 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1037 usleep_range(10000, 20000);
1038 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1040 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1045 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1047 if (timeout >= 100) {
1048 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1055 static int smsc75xx_reset(struct usbnet *dev)
1057 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1059 int ret = 0, timeout;
1061 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1063 ret = smsc75xx_wait_ready(dev, 0);
1065 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1069 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1071 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1077 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1079 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1086 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1088 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1092 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1094 if (timeout >= 100) {
1095 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1099 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1101 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1103 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1107 buf |= PMT_CTL_PHY_RST;
1109 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1111 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1118 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1120 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1124 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1126 if (timeout >= 100) {
1127 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1131 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1133 ret = smsc75xx_set_mac_address(dev);
1135 netdev_warn(dev->net, "Failed to set mac address\n");
1139 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1140 dev->net->dev_addr);
1142 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1144 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1148 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1153 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1155 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1159 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1161 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1165 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1170 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1171 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1172 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1173 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1175 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1176 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1179 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1180 (ulong)dev->rx_urb_size);
1182 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1184 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1188 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1190 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1194 netif_dbg(dev, ifup, dev->net,
1195 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1197 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1199 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1203 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1205 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1209 netif_dbg(dev, ifup, dev->net,
1210 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1213 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1215 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1219 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1221 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1223 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1225 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1229 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1231 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1235 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1238 /* set FIFO sizes */
1239 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1240 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1242 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1246 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1248 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1249 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1251 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1255 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1257 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1259 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1263 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1265 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1269 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1271 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1273 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1277 /* only set default GPIO/LED settings if no EEPROM is detected */
1278 if (!(buf & E2P_CMD_LOADED)) {
1279 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1281 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1285 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1286 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1288 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1290 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1295 ret = smsc75xx_write_reg(dev, FLOW, 0);
1297 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1301 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1303 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1307 /* Don't need rfe_ctl_lock during initialisation */
1308 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1310 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1314 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1316 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1318 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1322 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1324 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1328 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1331 /* Enable or disable checksum offload engines */
1332 smsc75xx_set_features(dev->net, dev->net->features);
1334 smsc75xx_set_multicast(dev->net);
1336 ret = smsc75xx_phy_initialize(dev);
1338 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1342 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1344 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1348 /* enable PHY interrupts */
1349 buf |= INT_ENP_PHY_INT;
1351 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1353 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1357 /* allow mac to detect speed and duplex from phy */
1358 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1360 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1364 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1365 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1367 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1371 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1373 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1379 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1381 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1385 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1387 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1389 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1393 buf |= FCT_TX_CTL_EN;
1395 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1397 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1401 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1403 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1405 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1409 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1411 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1417 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1419 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1423 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1425 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1427 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1431 buf |= FCT_RX_CTL_EN;
1433 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1435 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1439 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1441 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1445 static const struct net_device_ops smsc75xx_netdev_ops = {
1446 .ndo_open = usbnet_open,
1447 .ndo_stop = usbnet_stop,
1448 .ndo_start_xmit = usbnet_start_xmit,
1449 .ndo_tx_timeout = usbnet_tx_timeout,
1450 .ndo_get_stats64 = usbnet_get_stats64,
1451 .ndo_change_mtu = smsc75xx_change_mtu,
1452 .ndo_set_mac_address = eth_mac_addr,
1453 .ndo_validate_addr = eth_validate_addr,
1454 .ndo_do_ioctl = smsc75xx_ioctl,
1455 .ndo_set_rx_mode = smsc75xx_set_multicast,
1456 .ndo_set_features = smsc75xx_set_features,
1459 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1461 struct smsc75xx_priv *pdata = NULL;
1464 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1466 ret = usbnet_get_endpoints(dev, intf);
1468 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1472 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1475 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1481 spin_lock_init(&pdata->rfe_ctl_lock);
1482 mutex_init(&pdata->dataport_mutex);
1484 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1486 if (DEFAULT_TX_CSUM_ENABLE)
1487 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1489 if (DEFAULT_RX_CSUM_ENABLE)
1490 dev->net->features |= NETIF_F_RXCSUM;
1492 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1495 ret = smsc75xx_wait_ready(dev, 0);
1497 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1501 smsc75xx_init_mac_address(dev);
1503 /* Init all registers */
1504 ret = smsc75xx_reset(dev);
1506 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1510 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1511 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1512 dev->net->flags |= IFF_MULTICAST;
1513 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1514 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1515 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE;
1519 cancel_work_sync(&pdata->set_multicast);
1526 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1528 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1530 cancel_work_sync(&pdata->set_multicast);
1531 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1537 static u16 smsc_crc(const u8 *buffer, size_t len)
1539 return bitrev16(crc16(0xFFFF, buffer, len));
1542 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1545 int cfg_base = WUF_CFGX + filter * 4;
1546 int mask_base = WUF_MASKX + filter * 16;
1549 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1551 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1555 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1557 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1561 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1563 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1567 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1569 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1573 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1575 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1582 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1584 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1588 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1590 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1594 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1595 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1597 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1599 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1603 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1608 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1610 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1614 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1616 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1620 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1621 val |= PMT_CTL_SUS_MODE_1;
1623 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1625 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1629 /* clear wol status, enable energy detection */
1630 val &= ~PMT_CTL_WUPS;
1631 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1633 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1635 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1639 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1644 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1646 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1650 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1652 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1656 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1657 val |= PMT_CTL_SUS_MODE_2;
1659 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1661 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1665 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1670 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1672 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1676 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1678 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1682 if (val & FCT_RX_CTL_RXUSED) {
1683 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1687 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1689 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1693 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1694 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1696 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1698 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1702 /* clear wol status */
1703 val &= ~PMT_CTL_WUPS;
1704 val |= PMT_CTL_WUPS_WOL;
1706 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1708 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1712 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1717 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1719 struct mii_if_info *mii = &dev->mii;
1722 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1725 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1727 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1731 /* enable interrupt source */
1732 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1734 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1740 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1745 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1747 struct mii_if_info *mii = &dev->mii;
1750 /* first, a dummy read, needed to latch some MII phys */
1751 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1753 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1757 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1759 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1763 return !!(ret & BMSR_LSTATUS);
1766 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1770 if (!netif_running(dev->net)) {
1771 /* interface is ifconfig down so fully power down hw */
1772 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1773 return smsc75xx_enter_suspend2(dev);
1777 /* link is down so enter EDPD mode */
1778 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1780 /* enable PHY wakeup events for if cable is attached */
1781 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1782 PHY_INT_MASK_ANEG_COMP);
1784 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1788 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1789 return smsc75xx_enter_suspend1(dev);
1792 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1793 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1794 PHY_INT_MASK_LINK_DOWN);
1796 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1800 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1801 return smsc75xx_enter_suspend3(dev);
1804 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1806 struct usbnet *dev = usb_get_intfdata(intf);
1807 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1811 ret = usbnet_suspend(intf, message);
1813 netdev_warn(dev->net, "usbnet_suspend error\n");
1817 if (pdata->suspend_flags) {
1818 netdev_warn(dev->net, "error during last resume\n");
1819 pdata->suspend_flags = 0;
1822 /* determine if link is up using only _nopm functions */
1823 link_up = smsc75xx_link_ok_nopm(dev);
1825 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1826 ret = smsc75xx_autosuspend(dev, link_up);
1830 /* if we get this far we're not autosuspending */
1831 /* if no wol options set, or if link is down and we're not waking on
1832 * PHY activity, enter lowest power SUSPEND2 mode
1834 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1835 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1836 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1838 /* disable energy detect (link up) & wake up events */
1839 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1841 netdev_warn(dev->net, "Error reading WUCSR\n");
1845 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1847 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1849 netdev_warn(dev->net, "Error writing WUCSR\n");
1853 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1855 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1859 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1861 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1863 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1867 ret = smsc75xx_enter_suspend2(dev);
1871 if (pdata->wolopts & WAKE_PHY) {
1872 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1873 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1875 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1879 /* if link is down then configure EDPD and enter SUSPEND1,
1880 * otherwise enter SUSPEND0 below
1883 struct mii_if_info *mii = &dev->mii;
1884 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1886 /* enable energy detect power-down mode */
1887 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1890 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1894 ret |= MODE_CTRL_STS_EDPWRDOWN;
1896 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1897 PHY_MODE_CTRL_STS, ret);
1899 /* enter SUSPEND1 mode */
1900 ret = smsc75xx_enter_suspend1(dev);
1905 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1908 /* disable all filters */
1909 for (i = 0; i < WUF_NUM; i++) {
1910 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1912 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1917 if (pdata->wolopts & WAKE_MCAST) {
1918 const u8 mcast[] = {0x01, 0x00, 0x5E};
1919 netdev_info(dev->net, "enabling multicast detection\n");
1921 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1922 | smsc_crc(mcast, 3);
1923 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1925 netdev_warn(dev->net, "Error writing wakeup filter\n");
1930 if (pdata->wolopts & WAKE_ARP) {
1931 const u8 arp[] = {0x08, 0x06};
1932 netdev_info(dev->net, "enabling ARP detection\n");
1934 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1936 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1938 netdev_warn(dev->net, "Error writing wakeup filter\n");
1943 /* clear any pending pattern match packet status */
1944 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1946 netdev_warn(dev->net, "Error reading WUCSR\n");
1952 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1954 netdev_warn(dev->net, "Error writing WUCSR\n");
1958 netdev_info(dev->net, "enabling packet match detection\n");
1959 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1961 netdev_warn(dev->net, "Error reading WUCSR\n");
1967 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1969 netdev_warn(dev->net, "Error writing WUCSR\n");
1973 netdev_info(dev->net, "disabling packet match detection\n");
1974 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1976 netdev_warn(dev->net, "Error reading WUCSR\n");
1982 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1984 netdev_warn(dev->net, "Error writing WUCSR\n");
1989 /* disable magic, bcast & unicast wakeup sources */
1990 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1992 netdev_warn(dev->net, "Error reading WUCSR\n");
1996 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1998 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2000 netdev_warn(dev->net, "Error writing WUCSR\n");
2004 if (pdata->wolopts & WAKE_PHY) {
2005 netdev_info(dev->net, "enabling PHY wakeup\n");
2007 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2009 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2013 /* clear wol status, enable energy detection */
2014 val &= ~PMT_CTL_WUPS;
2015 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
2017 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2019 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2024 if (pdata->wolopts & WAKE_MAGIC) {
2025 netdev_info(dev->net, "enabling magic packet wakeup\n");
2026 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2028 netdev_warn(dev->net, "Error reading WUCSR\n");
2032 /* clear any pending magic packet status */
2033 val |= WUCSR_MPR | WUCSR_MPEN;
2035 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2037 netdev_warn(dev->net, "Error writing WUCSR\n");
2042 if (pdata->wolopts & WAKE_BCAST) {
2043 netdev_info(dev->net, "enabling broadcast detection\n");
2044 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2046 netdev_warn(dev->net, "Error reading WUCSR\n");
2050 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2052 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2054 netdev_warn(dev->net, "Error writing WUCSR\n");
2059 if (pdata->wolopts & WAKE_UCAST) {
2060 netdev_info(dev->net, "enabling unicast detection\n");
2061 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2063 netdev_warn(dev->net, "Error reading WUCSR\n");
2067 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2069 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2071 netdev_warn(dev->net, "Error writing WUCSR\n");
2076 /* enable receiver to enable frame reception */
2077 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2079 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2085 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2087 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2091 /* some wol options are enabled, so enter SUSPEND0 */
2092 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2093 ret = smsc75xx_enter_suspend0(dev);
2097 * TODO: resume() might need to handle the suspend failure
2100 if (ret && PMSG_IS_AUTO(message))
2101 usbnet_resume(intf);
2105 static int smsc75xx_resume(struct usb_interface *intf)
2107 struct usbnet *dev = usb_get_intfdata(intf);
2108 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2109 u8 suspend_flags = pdata->suspend_flags;
2113 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2115 /* do this first to ensure it's cleared even in error case */
2116 pdata->suspend_flags = 0;
2118 if (suspend_flags & SUSPEND_ALLMODES) {
2119 /* Disable wakeup sources */
2120 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2122 netdev_warn(dev->net, "Error reading WUCSR\n");
2126 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2129 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2131 netdev_warn(dev->net, "Error writing WUCSR\n");
2135 /* clear wake-up status */
2136 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2138 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2142 val &= ~PMT_CTL_WOL_EN;
2143 val |= PMT_CTL_WUPS;
2145 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2147 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2152 if (suspend_flags & SUSPEND_SUSPEND2) {
2153 netdev_info(dev->net, "resuming from SUSPEND2\n");
2155 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2157 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2161 val |= PMT_CTL_PHY_PWRUP;
2163 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2165 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2170 ret = smsc75xx_wait_ready(dev, 1);
2172 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2176 return usbnet_resume(intf);
2179 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2180 u32 rx_cmd_a, u32 rx_cmd_b)
2182 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2183 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2184 skb->ip_summed = CHECKSUM_NONE;
2186 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2187 skb->ip_summed = CHECKSUM_COMPLETE;
2191 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2193 /* This check is no longer done by usbnet */
2194 if (skb->len < dev->net->hard_header_len)
2197 while (skb->len > 0) {
2198 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2199 struct sk_buff *ax_skb;
2200 unsigned char *packet;
2202 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2203 le32_to_cpus(&rx_cmd_a);
2206 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2207 le32_to_cpus(&rx_cmd_b);
2208 skb_pull(skb, 4 + RXW_PADDING);
2212 /* get the packet length */
2213 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2214 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2216 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2217 netif_dbg(dev, rx_err, dev->net,
2218 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2219 dev->net->stats.rx_errors++;
2220 dev->net->stats.rx_dropped++;
2222 if (rx_cmd_a & RX_CMD_A_FCS)
2223 dev->net->stats.rx_crc_errors++;
2224 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2225 dev->net->stats.rx_frame_errors++;
2227 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2228 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2229 netif_dbg(dev, rx_err, dev->net,
2230 "size err rx_cmd_a=0x%08x\n",
2235 /* last frame in this batch */
2236 if (skb->len == size) {
2237 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2240 skb_trim(skb, skb->len - 4); /* remove fcs */
2241 skb->truesize = size + sizeof(struct sk_buff);
2246 ax_skb = skb_clone(skb, GFP_ATOMIC);
2247 if (unlikely(!ax_skb)) {
2248 netdev_warn(dev->net, "Error allocating skb\n");
2253 ax_skb->data = packet;
2254 skb_set_tail_pointer(ax_skb, size);
2256 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2259 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2260 ax_skb->truesize = size + sizeof(struct sk_buff);
2262 usbnet_skb_return(dev, ax_skb);
2265 skb_pull(skb, size);
2267 /* padding bytes before the next frame starts */
2269 skb_pull(skb, align_count);
2275 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2276 struct sk_buff *skb, gfp_t flags)
2278 u32 tx_cmd_a, tx_cmd_b;
2280 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2281 dev_kfree_skb_any(skb);
2285 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2287 if (skb->ip_summed == CHECKSUM_PARTIAL)
2288 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2290 if (skb_is_gso(skb)) {
2291 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2292 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2294 tx_cmd_a |= TX_CMD_A_LSO;
2300 cpu_to_le32s(&tx_cmd_b);
2301 memcpy(skb->data, &tx_cmd_b, 4);
2304 cpu_to_le32s(&tx_cmd_a);
2305 memcpy(skb->data, &tx_cmd_a, 4);
2310 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2312 dev->intf->needs_remote_wakeup = on;
2316 static const struct driver_info smsc75xx_info = {
2317 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2318 .bind = smsc75xx_bind,
2319 .unbind = smsc75xx_unbind,
2320 .link_reset = smsc75xx_link_reset,
2321 .reset = smsc75xx_reset,
2322 .rx_fixup = smsc75xx_rx_fixup,
2323 .tx_fixup = smsc75xx_tx_fixup,
2324 .status = smsc75xx_status,
2325 .manage_power = smsc75xx_manage_power,
2326 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2329 static const struct usb_device_id products[] = {
2331 /* SMSC7500 USB Gigabit Ethernet Device */
2332 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2333 .driver_info = (unsigned long) &smsc75xx_info,
2336 /* SMSC7500 USB Gigabit Ethernet Device */
2337 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2338 .driver_info = (unsigned long) &smsc75xx_info,
2342 MODULE_DEVICE_TABLE(usb, products);
2344 static struct usb_driver smsc75xx_driver = {
2345 .name = SMSC_CHIPNAME,
2346 .id_table = products,
2347 .probe = usbnet_probe,
2348 .suspend = smsc75xx_suspend,
2349 .resume = smsc75xx_resume,
2350 .reset_resume = smsc75xx_resume,
2351 .disconnect = usbnet_disconnect,
2352 .disable_hub_initiated_lpm = 1,
2353 .supports_autosuspend = 1,
2356 module_usb_driver(smsc75xx_driver);
2358 MODULE_AUTHOR("Nancy Lin");
2359 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2360 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2361 MODULE_LICENSE("GPL");