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 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
736 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
738 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
743 static const struct ethtool_ops smsc75xx_ethtool_ops = {
744 .get_link = usbnet_get_link,
745 .nway_reset = usbnet_nway_reset,
746 .get_drvinfo = usbnet_get_drvinfo,
747 .get_msglevel = usbnet_get_msglevel,
748 .set_msglevel = usbnet_set_msglevel,
749 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
750 .get_eeprom = smsc75xx_ethtool_get_eeprom,
751 .set_eeprom = smsc75xx_ethtool_set_eeprom,
752 .get_wol = smsc75xx_ethtool_get_wol,
753 .set_wol = smsc75xx_ethtool_set_wol,
754 .get_link_ksettings = usbnet_get_link_ksettings,
755 .set_link_ksettings = usbnet_set_link_ksettings,
758 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
760 struct usbnet *dev = netdev_priv(netdev);
762 if (!netif_running(netdev))
765 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
768 static void smsc75xx_init_mac_address(struct usbnet *dev)
772 /* maybe the boot loader passed the MAC address in devicetree */
773 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
775 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN);
779 /* try reading mac address from EEPROM */
780 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
781 dev->net->dev_addr) == 0) {
782 if (is_valid_ether_addr(dev->net->dev_addr)) {
783 /* eeprom values are valid so use them */
784 netif_dbg(dev, ifup, dev->net,
785 "MAC address read from EEPROM\n");
790 /* no useful static MAC address found. generate a random one */
791 eth_hw_addr_random(dev->net);
792 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
795 static int smsc75xx_set_mac_address(struct usbnet *dev)
797 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
798 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
799 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
801 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
803 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
807 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
809 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
813 addr_hi |= ADDR_FILTX_FB_VALID;
814 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
816 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
820 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
822 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
827 static int smsc75xx_phy_initialize(struct usbnet *dev)
829 int bmcr, ret, timeout = 0;
831 /* Initialize MII structure */
832 dev->mii.dev = dev->net;
833 dev->mii.mdio_read = smsc75xx_mdio_read;
834 dev->mii.mdio_write = smsc75xx_mdio_write;
835 dev->mii.phy_id_mask = 0x1f;
836 dev->mii.reg_num_mask = 0x1f;
837 dev->mii.supports_gmii = 1;
838 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
840 /* reset phy and wait for reset to complete */
841 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
845 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
847 netdev_warn(dev->net, "Error reading MII_BMCR\n");
851 } while ((bmcr & BMCR_RESET) && (timeout < 100));
853 if (timeout >= 100) {
854 netdev_warn(dev->net, "timeout on PHY Reset\n");
858 /* phy workaround for gig link */
859 smsc75xx_phy_gig_workaround(dev);
861 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
862 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
863 ADVERTISE_PAUSE_ASYM);
864 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
867 /* read and write to clear phy interrupt status */
868 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
870 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
874 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
876 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
877 PHY_INT_MASK_DEFAULT);
878 mii_nway_restart(&dev->mii);
880 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
884 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
890 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
892 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
896 rxenabled = ((buf & MAC_RX_RXEN) != 0);
900 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
902 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
907 /* add 4 to size for FCS */
908 buf &= ~MAC_RX_MAX_SIZE;
909 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
911 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
913 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
919 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
921 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
929 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
931 struct usbnet *dev = netdev_priv(netdev);
934 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
936 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
940 return usbnet_change_mtu(netdev, new_mtu);
943 /* Enable or disable Rx checksum offload engine */
944 static int smsc75xx_set_features(struct net_device *netdev,
945 netdev_features_t features)
947 struct usbnet *dev = netdev_priv(netdev);
948 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
952 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
954 if (features & NETIF_F_RXCSUM)
955 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
957 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
959 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
960 /* it's racing here! */
962 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
964 netdev_warn(dev->net, "Error writing RFE_CTL\n");
970 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
978 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
981 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
985 if (buf & PMT_CTL_DEV_RDY)
990 } while (timeout < 100);
992 netdev_warn(dev->net, "timeout waiting for device ready\n");
996 static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
998 struct mii_if_info *mii = &dev->mii;
999 int ret = 0, timeout = 0;
1000 u32 buf, link_up = 0;
1002 /* Set the phy in Gig loopback */
1003 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
1005 /* Wait for the link up */
1007 link_up = smsc75xx_link_ok_nopm(dev);
1008 usleep_range(10000, 20000);
1010 } while ((!link_up) && (timeout < 1000));
1012 if (timeout >= 1000) {
1013 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1018 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1020 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1024 buf |= PMT_CTL_PHY_RST;
1026 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1028 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1034 usleep_range(10000, 20000);
1035 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1037 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1042 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1044 if (timeout >= 100) {
1045 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1052 static int smsc75xx_reset(struct usbnet *dev)
1054 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1056 int ret = 0, timeout;
1058 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1060 ret = smsc75xx_wait_ready(dev, 0);
1062 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1066 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1068 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1074 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1076 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1083 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1085 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1089 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1091 if (timeout >= 100) {
1092 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1096 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1098 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1100 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1104 buf |= PMT_CTL_PHY_RST;
1106 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1108 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1115 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1117 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1121 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1123 if (timeout >= 100) {
1124 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1128 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1130 ret = smsc75xx_set_mac_address(dev);
1132 netdev_warn(dev->net, "Failed to set mac address\n");
1136 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1137 dev->net->dev_addr);
1139 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1141 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1145 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1150 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1152 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1156 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1158 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1162 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1167 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1168 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1169 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1170 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1172 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1173 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1176 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1177 (ulong)dev->rx_urb_size);
1179 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1181 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1185 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1187 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1191 netif_dbg(dev, ifup, dev->net,
1192 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1194 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1196 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1200 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1202 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1206 netif_dbg(dev, ifup, dev->net,
1207 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1210 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1212 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1216 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1218 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1220 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1222 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1226 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1228 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1232 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1235 /* set FIFO sizes */
1236 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1237 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1239 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1243 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1245 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1246 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1248 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1252 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1254 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1256 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1260 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1262 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1266 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1268 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1270 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1274 /* only set default GPIO/LED settings if no EEPROM is detected */
1275 if (!(buf & E2P_CMD_LOADED)) {
1276 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1278 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1282 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1283 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1285 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1287 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1292 ret = smsc75xx_write_reg(dev, FLOW, 0);
1294 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1298 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1300 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1304 /* Don't need rfe_ctl_lock during initialisation */
1305 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1307 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1311 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1313 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1315 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1319 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1321 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1325 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1328 /* Enable or disable checksum offload engines */
1329 smsc75xx_set_features(dev->net, dev->net->features);
1331 smsc75xx_set_multicast(dev->net);
1333 ret = smsc75xx_phy_initialize(dev);
1335 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1339 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1341 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1345 /* enable PHY interrupts */
1346 buf |= INT_ENP_PHY_INT;
1348 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1350 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1354 /* allow mac to detect speed and duplex from phy */
1355 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1357 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1361 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1362 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1364 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1368 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1370 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1376 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1378 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1382 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1384 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1386 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1390 buf |= FCT_TX_CTL_EN;
1392 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1394 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1398 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1400 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1402 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1406 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1408 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1414 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1416 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1420 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1422 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1424 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1428 buf |= FCT_RX_CTL_EN;
1430 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1432 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1436 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1438 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1442 static const struct net_device_ops smsc75xx_netdev_ops = {
1443 .ndo_open = usbnet_open,
1444 .ndo_stop = usbnet_stop,
1445 .ndo_start_xmit = usbnet_start_xmit,
1446 .ndo_tx_timeout = usbnet_tx_timeout,
1447 .ndo_get_stats64 = usbnet_get_stats64,
1448 .ndo_change_mtu = smsc75xx_change_mtu,
1449 .ndo_set_mac_address = eth_mac_addr,
1450 .ndo_validate_addr = eth_validate_addr,
1451 .ndo_do_ioctl = smsc75xx_ioctl,
1452 .ndo_set_rx_mode = smsc75xx_set_multicast,
1453 .ndo_set_features = smsc75xx_set_features,
1456 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1458 struct smsc75xx_priv *pdata = NULL;
1461 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1463 ret = usbnet_get_endpoints(dev, intf);
1465 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1469 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1472 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1478 spin_lock_init(&pdata->rfe_ctl_lock);
1479 mutex_init(&pdata->dataport_mutex);
1481 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1483 if (DEFAULT_TX_CSUM_ENABLE)
1484 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1486 if (DEFAULT_RX_CSUM_ENABLE)
1487 dev->net->features |= NETIF_F_RXCSUM;
1489 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1492 ret = smsc75xx_wait_ready(dev, 0);
1494 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1498 smsc75xx_init_mac_address(dev);
1500 /* Init all registers */
1501 ret = smsc75xx_reset(dev);
1503 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1507 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1508 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1509 dev->net->flags |= IFF_MULTICAST;
1510 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1511 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1512 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE;
1516 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1518 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1520 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1527 static u16 smsc_crc(const u8 *buffer, size_t len)
1529 return bitrev16(crc16(0xFFFF, buffer, len));
1532 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1535 int cfg_base = WUF_CFGX + filter * 4;
1536 int mask_base = WUF_MASKX + filter * 16;
1539 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1541 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1545 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1547 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1551 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1553 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1557 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1559 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1563 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1565 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1572 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1574 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1578 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1580 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1584 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1585 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1587 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1589 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1593 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1598 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1600 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1604 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1606 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1610 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1611 val |= PMT_CTL_SUS_MODE_1;
1613 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1615 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1619 /* clear wol status, enable energy detection */
1620 val &= ~PMT_CTL_WUPS;
1621 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1623 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1625 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1629 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1634 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1636 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1640 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1642 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1646 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1647 val |= PMT_CTL_SUS_MODE_2;
1649 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1651 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1655 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1660 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1662 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1666 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1668 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1672 if (val & FCT_RX_CTL_RXUSED) {
1673 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1677 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1679 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1683 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1684 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1686 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1688 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1692 /* clear wol status */
1693 val &= ~PMT_CTL_WUPS;
1694 val |= PMT_CTL_WUPS_WOL;
1696 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1698 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1702 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1707 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1709 struct mii_if_info *mii = &dev->mii;
1712 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1715 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1717 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1721 /* enable interrupt source */
1722 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1724 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1730 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1735 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1737 struct mii_if_info *mii = &dev->mii;
1740 /* first, a dummy read, needed to latch some MII phys */
1741 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1743 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1747 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1749 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1753 return !!(ret & BMSR_LSTATUS);
1756 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1760 if (!netif_running(dev->net)) {
1761 /* interface is ifconfig down so fully power down hw */
1762 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1763 return smsc75xx_enter_suspend2(dev);
1767 /* link is down so enter EDPD mode */
1768 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1770 /* enable PHY wakeup events for if cable is attached */
1771 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1772 PHY_INT_MASK_ANEG_COMP);
1774 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1778 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1779 return smsc75xx_enter_suspend1(dev);
1782 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1783 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1784 PHY_INT_MASK_LINK_DOWN);
1786 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1790 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1791 return smsc75xx_enter_suspend3(dev);
1794 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1796 struct usbnet *dev = usb_get_intfdata(intf);
1797 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1801 ret = usbnet_suspend(intf, message);
1803 netdev_warn(dev->net, "usbnet_suspend error\n");
1807 if (pdata->suspend_flags) {
1808 netdev_warn(dev->net, "error during last resume\n");
1809 pdata->suspend_flags = 0;
1812 /* determine if link is up using only _nopm functions */
1813 link_up = smsc75xx_link_ok_nopm(dev);
1815 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1816 ret = smsc75xx_autosuspend(dev, link_up);
1820 /* if we get this far we're not autosuspending */
1821 /* if no wol options set, or if link is down and we're not waking on
1822 * PHY activity, enter lowest power SUSPEND2 mode
1824 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1825 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1826 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1828 /* disable energy detect (link up) & wake up events */
1829 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1831 netdev_warn(dev->net, "Error reading WUCSR\n");
1835 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1837 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1839 netdev_warn(dev->net, "Error writing WUCSR\n");
1843 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1845 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1849 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1851 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1853 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1857 ret = smsc75xx_enter_suspend2(dev);
1861 if (pdata->wolopts & WAKE_PHY) {
1862 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1863 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1865 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1869 /* if link is down then configure EDPD and enter SUSPEND1,
1870 * otherwise enter SUSPEND0 below
1873 struct mii_if_info *mii = &dev->mii;
1874 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1876 /* enable energy detect power-down mode */
1877 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1880 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1884 ret |= MODE_CTRL_STS_EDPWRDOWN;
1886 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1887 PHY_MODE_CTRL_STS, ret);
1889 /* enter SUSPEND1 mode */
1890 ret = smsc75xx_enter_suspend1(dev);
1895 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1898 /* disable all filters */
1899 for (i = 0; i < WUF_NUM; i++) {
1900 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1902 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1907 if (pdata->wolopts & WAKE_MCAST) {
1908 const u8 mcast[] = {0x01, 0x00, 0x5E};
1909 netdev_info(dev->net, "enabling multicast detection\n");
1911 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1912 | smsc_crc(mcast, 3);
1913 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1915 netdev_warn(dev->net, "Error writing wakeup filter\n");
1920 if (pdata->wolopts & WAKE_ARP) {
1921 const u8 arp[] = {0x08, 0x06};
1922 netdev_info(dev->net, "enabling ARP detection\n");
1924 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1926 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1928 netdev_warn(dev->net, "Error writing wakeup filter\n");
1933 /* clear any pending pattern match packet status */
1934 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1936 netdev_warn(dev->net, "Error reading WUCSR\n");
1942 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1944 netdev_warn(dev->net, "Error writing WUCSR\n");
1948 netdev_info(dev->net, "enabling packet match detection\n");
1949 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1951 netdev_warn(dev->net, "Error reading WUCSR\n");
1957 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1959 netdev_warn(dev->net, "Error writing WUCSR\n");
1963 netdev_info(dev->net, "disabling packet match detection\n");
1964 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1966 netdev_warn(dev->net, "Error reading WUCSR\n");
1972 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1974 netdev_warn(dev->net, "Error writing WUCSR\n");
1979 /* disable magic, bcast & unicast wakeup sources */
1980 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1982 netdev_warn(dev->net, "Error reading WUCSR\n");
1986 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1988 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1990 netdev_warn(dev->net, "Error writing WUCSR\n");
1994 if (pdata->wolopts & WAKE_PHY) {
1995 netdev_info(dev->net, "enabling PHY wakeup\n");
1997 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1999 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2003 /* clear wol status, enable energy detection */
2004 val &= ~PMT_CTL_WUPS;
2005 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
2007 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2009 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2014 if (pdata->wolopts & WAKE_MAGIC) {
2015 netdev_info(dev->net, "enabling magic packet wakeup\n");
2016 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2018 netdev_warn(dev->net, "Error reading WUCSR\n");
2022 /* clear any pending magic packet status */
2023 val |= WUCSR_MPR | WUCSR_MPEN;
2025 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2027 netdev_warn(dev->net, "Error writing WUCSR\n");
2032 if (pdata->wolopts & WAKE_BCAST) {
2033 netdev_info(dev->net, "enabling broadcast detection\n");
2034 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2036 netdev_warn(dev->net, "Error reading WUCSR\n");
2040 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2042 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2044 netdev_warn(dev->net, "Error writing WUCSR\n");
2049 if (pdata->wolopts & WAKE_UCAST) {
2050 netdev_info(dev->net, "enabling unicast detection\n");
2051 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2053 netdev_warn(dev->net, "Error reading WUCSR\n");
2057 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2059 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2061 netdev_warn(dev->net, "Error writing WUCSR\n");
2066 /* enable receiver to enable frame reception */
2067 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2069 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2075 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2077 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2081 /* some wol options are enabled, so enter SUSPEND0 */
2082 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2083 ret = smsc75xx_enter_suspend0(dev);
2087 * TODO: resume() might need to handle the suspend failure
2090 if (ret && PMSG_IS_AUTO(message))
2091 usbnet_resume(intf);
2095 static int smsc75xx_resume(struct usb_interface *intf)
2097 struct usbnet *dev = usb_get_intfdata(intf);
2098 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2099 u8 suspend_flags = pdata->suspend_flags;
2103 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2105 /* do this first to ensure it's cleared even in error case */
2106 pdata->suspend_flags = 0;
2108 if (suspend_flags & SUSPEND_ALLMODES) {
2109 /* Disable wakeup sources */
2110 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2112 netdev_warn(dev->net, "Error reading WUCSR\n");
2116 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2119 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2121 netdev_warn(dev->net, "Error writing WUCSR\n");
2125 /* clear wake-up status */
2126 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2128 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2132 val &= ~PMT_CTL_WOL_EN;
2133 val |= PMT_CTL_WUPS;
2135 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2137 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2142 if (suspend_flags & SUSPEND_SUSPEND2) {
2143 netdev_info(dev->net, "resuming from SUSPEND2\n");
2145 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2147 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2151 val |= PMT_CTL_PHY_PWRUP;
2153 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2155 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2160 ret = smsc75xx_wait_ready(dev, 1);
2162 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2166 return usbnet_resume(intf);
2169 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2170 u32 rx_cmd_a, u32 rx_cmd_b)
2172 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2173 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2174 skb->ip_summed = CHECKSUM_NONE;
2176 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2177 skb->ip_summed = CHECKSUM_COMPLETE;
2181 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2183 /* This check is no longer done by usbnet */
2184 if (skb->len < dev->net->hard_header_len)
2187 while (skb->len > 0) {
2188 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2189 struct sk_buff *ax_skb;
2190 unsigned char *packet;
2192 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2193 le32_to_cpus(&rx_cmd_a);
2196 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2197 le32_to_cpus(&rx_cmd_b);
2198 skb_pull(skb, 4 + RXW_PADDING);
2202 /* get the packet length */
2203 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2204 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2206 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2207 netif_dbg(dev, rx_err, dev->net,
2208 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2209 dev->net->stats.rx_errors++;
2210 dev->net->stats.rx_dropped++;
2212 if (rx_cmd_a & RX_CMD_A_FCS)
2213 dev->net->stats.rx_crc_errors++;
2214 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2215 dev->net->stats.rx_frame_errors++;
2217 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2218 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2219 netif_dbg(dev, rx_err, dev->net,
2220 "size err rx_cmd_a=0x%08x\n",
2225 /* last frame in this batch */
2226 if (skb->len == size) {
2227 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2230 skb_trim(skb, skb->len - 4); /* remove fcs */
2231 skb->truesize = size + sizeof(struct sk_buff);
2236 ax_skb = skb_clone(skb, GFP_ATOMIC);
2237 if (unlikely(!ax_skb)) {
2238 netdev_warn(dev->net, "Error allocating skb\n");
2243 ax_skb->data = packet;
2244 skb_set_tail_pointer(ax_skb, size);
2246 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2249 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2250 ax_skb->truesize = size + sizeof(struct sk_buff);
2252 usbnet_skb_return(dev, ax_skb);
2255 skb_pull(skb, size);
2257 /* padding bytes before the next frame starts */
2259 skb_pull(skb, align_count);
2265 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2266 struct sk_buff *skb, gfp_t flags)
2268 u32 tx_cmd_a, tx_cmd_b;
2270 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2271 dev_kfree_skb_any(skb);
2275 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2277 if (skb->ip_summed == CHECKSUM_PARTIAL)
2278 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2280 if (skb_is_gso(skb)) {
2281 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2282 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2284 tx_cmd_a |= TX_CMD_A_LSO;
2290 cpu_to_le32s(&tx_cmd_b);
2291 memcpy(skb->data, &tx_cmd_b, 4);
2294 cpu_to_le32s(&tx_cmd_a);
2295 memcpy(skb->data, &tx_cmd_a, 4);
2300 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2302 dev->intf->needs_remote_wakeup = on;
2306 static const struct driver_info smsc75xx_info = {
2307 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2308 .bind = smsc75xx_bind,
2309 .unbind = smsc75xx_unbind,
2310 .link_reset = smsc75xx_link_reset,
2311 .reset = smsc75xx_reset,
2312 .rx_fixup = smsc75xx_rx_fixup,
2313 .tx_fixup = smsc75xx_tx_fixup,
2314 .status = smsc75xx_status,
2315 .manage_power = smsc75xx_manage_power,
2316 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2319 static const struct usb_device_id products[] = {
2321 /* SMSC7500 USB Gigabit Ethernet Device */
2322 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2323 .driver_info = (unsigned long) &smsc75xx_info,
2326 /* SMSC7500 USB Gigabit Ethernet Device */
2327 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2328 .driver_info = (unsigned long) &smsc75xx_info,
2332 MODULE_DEVICE_TABLE(usb, products);
2334 static struct usb_driver smsc75xx_driver = {
2335 .name = SMSC_CHIPNAME,
2336 .id_table = products,
2337 .probe = usbnet_probe,
2338 .suspend = smsc75xx_suspend,
2339 .resume = smsc75xx_resume,
2340 .reset_resume = smsc75xx_resume,
2341 .disconnect = usbnet_disconnect,
2342 .disable_hub_initiated_lpm = 1,
2343 .supports_autosuspend = 1,
2346 module_usb_driver(smsc75xx_driver);
2348 MODULE_AUTHOR("Nancy Lin");
2349 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2350 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2351 MODULE_LICENSE("GPL");