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_settings = usbnet_get_settings,
753 .set_settings = usbnet_set_settings,
754 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
755 .get_eeprom = smsc75xx_ethtool_get_eeprom,
756 .set_eeprom = smsc75xx_ethtool_set_eeprom,
757 .get_wol = smsc75xx_ethtool_get_wol,
758 .set_wol = smsc75xx_ethtool_set_wol,
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 if (new_mtu > MAX_SINGLE_PACKET_SIZE)
940 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
942 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
946 return usbnet_change_mtu(netdev, new_mtu);
949 /* Enable or disable Rx checksum offload engine */
950 static int smsc75xx_set_features(struct net_device *netdev,
951 netdev_features_t features)
953 struct usbnet *dev = netdev_priv(netdev);
954 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
958 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
960 if (features & NETIF_F_RXCSUM)
961 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
963 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
965 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
966 /* it's racing here! */
968 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
970 netdev_warn(dev->net, "Error writing RFE_CTL\n");
976 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
984 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
987 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
991 if (buf & PMT_CTL_DEV_RDY)
996 } while (timeout < 100);
998 netdev_warn(dev->net, "timeout waiting for device ready\n");
1002 static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
1004 struct mii_if_info *mii = &dev->mii;
1005 int ret = 0, timeout = 0;
1006 u32 buf, link_up = 0;
1008 /* Set the phy in Gig loopback */
1009 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
1011 /* Wait for the link up */
1013 link_up = smsc75xx_link_ok_nopm(dev);
1014 usleep_range(10000, 20000);
1016 } while ((!link_up) && (timeout < 1000));
1018 if (timeout >= 1000) {
1019 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1024 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1026 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1030 buf |= PMT_CTL_PHY_RST;
1032 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1034 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1040 usleep_range(10000, 20000);
1041 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1043 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1048 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1050 if (timeout >= 100) {
1051 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1058 static int smsc75xx_reset(struct usbnet *dev)
1060 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1062 int ret = 0, timeout;
1064 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1066 ret = smsc75xx_wait_ready(dev, 0);
1068 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1072 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1074 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1080 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1082 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1089 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1091 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1095 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1097 if (timeout >= 100) {
1098 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1102 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1104 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1106 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1110 buf |= PMT_CTL_PHY_RST;
1112 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1114 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1121 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1123 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1127 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1129 if (timeout >= 100) {
1130 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1134 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1136 ret = smsc75xx_set_mac_address(dev);
1138 netdev_warn(dev->net, "Failed to set mac address\n");
1142 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1143 dev->net->dev_addr);
1145 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1147 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1151 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1156 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1158 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1162 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1164 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1168 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1173 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1174 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1175 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1176 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1178 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1179 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1182 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1183 (ulong)dev->rx_urb_size);
1185 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1187 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1191 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1193 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1197 netif_dbg(dev, ifup, dev->net,
1198 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1200 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1202 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1206 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1208 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1212 netif_dbg(dev, ifup, dev->net,
1213 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1216 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1218 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1222 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1224 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1226 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1228 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1232 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1234 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1238 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1241 /* set FIFO sizes */
1242 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1243 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1245 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1249 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1251 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1252 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1254 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1258 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1260 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1262 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1266 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1268 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1272 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1274 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1276 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1280 /* only set default GPIO/LED settings if no EEPROM is detected */
1281 if (!(buf & E2P_CMD_LOADED)) {
1282 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1284 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1288 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1289 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1291 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1293 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1298 ret = smsc75xx_write_reg(dev, FLOW, 0);
1300 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1304 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1306 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1310 /* Don't need rfe_ctl_lock during initialisation */
1311 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1313 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1317 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1319 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1321 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1325 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1327 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1331 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1334 /* Enable or disable checksum offload engines */
1335 smsc75xx_set_features(dev->net, dev->net->features);
1337 smsc75xx_set_multicast(dev->net);
1339 ret = smsc75xx_phy_initialize(dev);
1341 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1345 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1347 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1351 /* enable PHY interrupts */
1352 buf |= INT_ENP_PHY_INT;
1354 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1356 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1360 /* allow mac to detect speed and duplex from phy */
1361 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1363 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1367 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1368 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1370 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1374 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1376 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1382 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1384 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1388 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1390 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1392 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1396 buf |= FCT_TX_CTL_EN;
1398 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1400 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1404 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1406 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1408 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1412 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1414 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1420 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1422 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1426 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1428 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1430 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1434 buf |= FCT_RX_CTL_EN;
1436 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1438 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1442 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1444 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1448 static const struct net_device_ops smsc75xx_netdev_ops = {
1449 .ndo_open = usbnet_open,
1450 .ndo_stop = usbnet_stop,
1451 .ndo_start_xmit = usbnet_start_xmit,
1452 .ndo_tx_timeout = usbnet_tx_timeout,
1453 .ndo_change_mtu = smsc75xx_change_mtu,
1454 .ndo_set_mac_address = eth_mac_addr,
1455 .ndo_validate_addr = eth_validate_addr,
1456 .ndo_do_ioctl = smsc75xx_ioctl,
1457 .ndo_set_rx_mode = smsc75xx_set_multicast,
1458 .ndo_set_features = smsc75xx_set_features,
1461 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1463 struct smsc75xx_priv *pdata = NULL;
1466 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1468 ret = usbnet_get_endpoints(dev, intf);
1470 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1474 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1477 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1483 spin_lock_init(&pdata->rfe_ctl_lock);
1484 mutex_init(&pdata->dataport_mutex);
1486 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1488 if (DEFAULT_TX_CSUM_ENABLE)
1489 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1491 if (DEFAULT_RX_CSUM_ENABLE)
1492 dev->net->features |= NETIF_F_RXCSUM;
1494 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1497 ret = smsc75xx_wait_ready(dev, 0);
1499 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1503 smsc75xx_init_mac_address(dev);
1505 /* Init all registers */
1506 ret = smsc75xx_reset(dev);
1508 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1512 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1513 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1514 dev->net->flags |= IFF_MULTICAST;
1515 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1516 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1520 cancel_work_sync(&pdata->set_multicast);
1527 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1529 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1531 cancel_work_sync(&pdata->set_multicast);
1532 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1538 static u16 smsc_crc(const u8 *buffer, size_t len)
1540 return bitrev16(crc16(0xFFFF, buffer, len));
1543 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1546 int cfg_base = WUF_CFGX + filter * 4;
1547 int mask_base = WUF_MASKX + filter * 16;
1550 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1552 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1556 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1558 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1562 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1564 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1568 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1570 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1574 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1576 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1583 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1585 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1589 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1591 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1595 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1596 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1598 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1600 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1604 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1609 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1611 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1615 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1617 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1621 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1622 val |= PMT_CTL_SUS_MODE_1;
1624 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1626 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1630 /* clear wol status, enable energy detection */
1631 val &= ~PMT_CTL_WUPS;
1632 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1634 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1636 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1640 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1645 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1647 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1651 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1653 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1657 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1658 val |= PMT_CTL_SUS_MODE_2;
1660 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1662 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1666 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1671 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1673 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1677 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1679 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1683 if (val & FCT_RX_CTL_RXUSED) {
1684 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1688 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1690 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1694 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1695 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1697 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1699 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1703 /* clear wol status */
1704 val &= ~PMT_CTL_WUPS;
1705 val |= PMT_CTL_WUPS_WOL;
1707 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1709 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1713 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1718 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1720 struct mii_if_info *mii = &dev->mii;
1723 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1726 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1728 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1732 /* enable interrupt source */
1733 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1735 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1741 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1746 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1748 struct mii_if_info *mii = &dev->mii;
1751 /* first, a dummy read, needed to latch some MII phys */
1752 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1754 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1758 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1760 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1764 return !!(ret & BMSR_LSTATUS);
1767 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1771 if (!netif_running(dev->net)) {
1772 /* interface is ifconfig down so fully power down hw */
1773 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1774 return smsc75xx_enter_suspend2(dev);
1778 /* link is down so enter EDPD mode */
1779 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1781 /* enable PHY wakeup events for if cable is attached */
1782 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1783 PHY_INT_MASK_ANEG_COMP);
1785 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1789 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1790 return smsc75xx_enter_suspend1(dev);
1793 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1794 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1795 PHY_INT_MASK_LINK_DOWN);
1797 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1801 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1802 return smsc75xx_enter_suspend3(dev);
1805 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1807 struct usbnet *dev = usb_get_intfdata(intf);
1808 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1812 ret = usbnet_suspend(intf, message);
1814 netdev_warn(dev->net, "usbnet_suspend error\n");
1818 if (pdata->suspend_flags) {
1819 netdev_warn(dev->net, "error during last resume\n");
1820 pdata->suspend_flags = 0;
1823 /* determine if link is up using only _nopm functions */
1824 link_up = smsc75xx_link_ok_nopm(dev);
1826 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1827 ret = smsc75xx_autosuspend(dev, link_up);
1831 /* if we get this far we're not autosuspending */
1832 /* if no wol options set, or if link is down and we're not waking on
1833 * PHY activity, enter lowest power SUSPEND2 mode
1835 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1836 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1837 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1839 /* disable energy detect (link up) & wake up events */
1840 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1842 netdev_warn(dev->net, "Error reading WUCSR\n");
1846 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1848 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1850 netdev_warn(dev->net, "Error writing WUCSR\n");
1854 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1856 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1860 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1862 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1864 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1868 ret = smsc75xx_enter_suspend2(dev);
1872 if (pdata->wolopts & WAKE_PHY) {
1873 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1874 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1876 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1880 /* if link is down then configure EDPD and enter SUSPEND1,
1881 * otherwise enter SUSPEND0 below
1884 struct mii_if_info *mii = &dev->mii;
1885 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1887 /* enable energy detect power-down mode */
1888 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1891 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1895 ret |= MODE_CTRL_STS_EDPWRDOWN;
1897 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1898 PHY_MODE_CTRL_STS, ret);
1900 /* enter SUSPEND1 mode */
1901 ret = smsc75xx_enter_suspend1(dev);
1906 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1909 /* disable all filters */
1910 for (i = 0; i < WUF_NUM; i++) {
1911 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1913 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1918 if (pdata->wolopts & WAKE_MCAST) {
1919 const u8 mcast[] = {0x01, 0x00, 0x5E};
1920 netdev_info(dev->net, "enabling multicast detection\n");
1922 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1923 | smsc_crc(mcast, 3);
1924 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1926 netdev_warn(dev->net, "Error writing wakeup filter\n");
1931 if (pdata->wolopts & WAKE_ARP) {
1932 const u8 arp[] = {0x08, 0x06};
1933 netdev_info(dev->net, "enabling ARP detection\n");
1935 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1937 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1939 netdev_warn(dev->net, "Error writing wakeup filter\n");
1944 /* clear any pending pattern match packet status */
1945 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1947 netdev_warn(dev->net, "Error reading WUCSR\n");
1953 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1955 netdev_warn(dev->net, "Error writing WUCSR\n");
1959 netdev_info(dev->net, "enabling packet match detection\n");
1960 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1962 netdev_warn(dev->net, "Error reading WUCSR\n");
1968 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1970 netdev_warn(dev->net, "Error writing WUCSR\n");
1974 netdev_info(dev->net, "disabling packet match detection\n");
1975 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1977 netdev_warn(dev->net, "Error reading WUCSR\n");
1983 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1985 netdev_warn(dev->net, "Error writing WUCSR\n");
1990 /* disable magic, bcast & unicast wakeup sources */
1991 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1993 netdev_warn(dev->net, "Error reading WUCSR\n");
1997 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1999 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2001 netdev_warn(dev->net, "Error writing WUCSR\n");
2005 if (pdata->wolopts & WAKE_PHY) {
2006 netdev_info(dev->net, "enabling PHY wakeup\n");
2008 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2010 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2014 /* clear wol status, enable energy detection */
2015 val &= ~PMT_CTL_WUPS;
2016 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
2018 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2020 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2025 if (pdata->wolopts & WAKE_MAGIC) {
2026 netdev_info(dev->net, "enabling magic packet wakeup\n");
2027 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2029 netdev_warn(dev->net, "Error reading WUCSR\n");
2033 /* clear any pending magic packet status */
2034 val |= WUCSR_MPR | WUCSR_MPEN;
2036 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2038 netdev_warn(dev->net, "Error writing WUCSR\n");
2043 if (pdata->wolopts & WAKE_BCAST) {
2044 netdev_info(dev->net, "enabling broadcast detection\n");
2045 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2047 netdev_warn(dev->net, "Error reading WUCSR\n");
2051 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2053 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2055 netdev_warn(dev->net, "Error writing WUCSR\n");
2060 if (pdata->wolopts & WAKE_UCAST) {
2061 netdev_info(dev->net, "enabling unicast detection\n");
2062 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2064 netdev_warn(dev->net, "Error reading WUCSR\n");
2068 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2070 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2072 netdev_warn(dev->net, "Error writing WUCSR\n");
2077 /* enable receiver to enable frame reception */
2078 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2080 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2086 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2088 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2092 /* some wol options are enabled, so enter SUSPEND0 */
2093 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2094 ret = smsc75xx_enter_suspend0(dev);
2098 * TODO: resume() might need to handle the suspend failure
2101 if (ret && PMSG_IS_AUTO(message))
2102 usbnet_resume(intf);
2106 static int smsc75xx_resume(struct usb_interface *intf)
2108 struct usbnet *dev = usb_get_intfdata(intf);
2109 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2110 u8 suspend_flags = pdata->suspend_flags;
2114 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2116 /* do this first to ensure it's cleared even in error case */
2117 pdata->suspend_flags = 0;
2119 if (suspend_flags & SUSPEND_ALLMODES) {
2120 /* Disable wakeup sources */
2121 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2123 netdev_warn(dev->net, "Error reading WUCSR\n");
2127 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2130 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2132 netdev_warn(dev->net, "Error writing WUCSR\n");
2136 /* clear wake-up status */
2137 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2139 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2143 val &= ~PMT_CTL_WOL_EN;
2144 val |= PMT_CTL_WUPS;
2146 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2148 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2153 if (suspend_flags & SUSPEND_SUSPEND2) {
2154 netdev_info(dev->net, "resuming from SUSPEND2\n");
2156 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2158 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2162 val |= PMT_CTL_PHY_PWRUP;
2164 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2166 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2171 ret = smsc75xx_wait_ready(dev, 1);
2173 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2177 return usbnet_resume(intf);
2180 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2181 u32 rx_cmd_a, u32 rx_cmd_b)
2183 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2184 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2185 skb->ip_summed = CHECKSUM_NONE;
2187 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2188 skb->ip_summed = CHECKSUM_COMPLETE;
2192 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2194 /* This check is no longer done by usbnet */
2195 if (skb->len < dev->net->hard_header_len)
2198 while (skb->len > 0) {
2199 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2200 struct sk_buff *ax_skb;
2201 unsigned char *packet;
2203 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2204 le32_to_cpus(&rx_cmd_a);
2207 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2208 le32_to_cpus(&rx_cmd_b);
2209 skb_pull(skb, 4 + RXW_PADDING);
2213 /* get the packet length */
2214 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2215 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2217 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2218 netif_dbg(dev, rx_err, dev->net,
2219 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2220 dev->net->stats.rx_errors++;
2221 dev->net->stats.rx_dropped++;
2223 if (rx_cmd_a & RX_CMD_A_FCS)
2224 dev->net->stats.rx_crc_errors++;
2225 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2226 dev->net->stats.rx_frame_errors++;
2228 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2229 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2230 netif_dbg(dev, rx_err, dev->net,
2231 "size err rx_cmd_a=0x%08x\n",
2236 /* last frame in this batch */
2237 if (skb->len == size) {
2238 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2241 skb_trim(skb, skb->len - 4); /* remove fcs */
2242 skb->truesize = size + sizeof(struct sk_buff);
2247 ax_skb = skb_clone(skb, GFP_ATOMIC);
2248 if (unlikely(!ax_skb)) {
2249 netdev_warn(dev->net, "Error allocating skb\n");
2254 ax_skb->data = packet;
2255 skb_set_tail_pointer(ax_skb, size);
2257 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2260 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2261 ax_skb->truesize = size + sizeof(struct sk_buff);
2263 usbnet_skb_return(dev, ax_skb);
2266 skb_pull(skb, size);
2268 /* padding bytes before the next frame starts */
2270 skb_pull(skb, align_count);
2276 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2277 struct sk_buff *skb, gfp_t flags)
2279 u32 tx_cmd_a, tx_cmd_b;
2281 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2282 dev_kfree_skb_any(skb);
2286 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2288 if (skb->ip_summed == CHECKSUM_PARTIAL)
2289 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2291 if (skb_is_gso(skb)) {
2292 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2293 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2295 tx_cmd_a |= TX_CMD_A_LSO;
2301 cpu_to_le32s(&tx_cmd_b);
2302 memcpy(skb->data, &tx_cmd_b, 4);
2305 cpu_to_le32s(&tx_cmd_a);
2306 memcpy(skb->data, &tx_cmd_a, 4);
2311 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2313 dev->intf->needs_remote_wakeup = on;
2317 static const struct driver_info smsc75xx_info = {
2318 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2319 .bind = smsc75xx_bind,
2320 .unbind = smsc75xx_unbind,
2321 .link_reset = smsc75xx_link_reset,
2322 .reset = smsc75xx_reset,
2323 .rx_fixup = smsc75xx_rx_fixup,
2324 .tx_fixup = smsc75xx_tx_fixup,
2325 .status = smsc75xx_status,
2326 .manage_power = smsc75xx_manage_power,
2327 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2330 static const struct usb_device_id products[] = {
2332 /* SMSC7500 USB Gigabit Ethernet Device */
2333 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2334 .driver_info = (unsigned long) &smsc75xx_info,
2337 /* SMSC7500 USB Gigabit Ethernet Device */
2338 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2339 .driver_info = (unsigned long) &smsc75xx_info,
2343 MODULE_DEVICE_TABLE(usb, products);
2345 static struct usb_driver smsc75xx_driver = {
2346 .name = SMSC_CHIPNAME,
2347 .id_table = products,
2348 .probe = usbnet_probe,
2349 .suspend = smsc75xx_suspend,
2350 .resume = smsc75xx_resume,
2351 .reset_resume = smsc75xx_resume,
2352 .disconnect = usbnet_disconnect,
2353 .disable_hub_initiated_lpm = 1,
2354 .supports_autosuspend = 1,
2357 module_usb_driver(smsc75xx_driver);
2359 MODULE_AUTHOR("Nancy Lin");
2360 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2361 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2362 MODULE_LICENSE("GPL");