1 /***************************************************************************
3 * Copyright (C) 2007-2008 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/init.h>
23 #include <linux/netdevice.h>
24 #include <linux/etherdevice.h>
25 #include <linux/ethtool.h>
26 #include <linux/mii.h>
27 #include <linux/usb.h>
28 #include <linux/bitrev.h>
29 #include <linux/crc16.h>
30 #include <linux/crc32.h>
31 #include <linux/usb/usbnet.h>
32 #include <linux/slab.h>
35 #define SMSC_CHIPNAME "smsc95xx"
36 #define SMSC_DRIVER_VERSION "1.0.4"
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 (2048)
43 #define LAN95XX_EEPROM_MAGIC (0x9500)
44 #define EEPROM_MAC_OFFSET (0x01)
45 #define DEFAULT_TX_CSUM_ENABLE (true)
46 #define DEFAULT_RX_CSUM_ENABLE (true)
47 #define SMSC95XX_INTERNAL_PHY_ID (1)
48 #define SMSC95XX_TX_OVERHEAD (8)
49 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
50 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
51 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
53 #define FEATURE_8_WAKEUP_FILTERS (0x01)
54 #define FEATURE_PHY_NLP_CROSSOVER (0x02)
55 #define FEATURE_REMOTE_WAKEUP (0x04)
57 #define SUSPEND_SUSPEND0 (0x01)
58 #define SUSPEND_SUSPEND1 (0x02)
59 #define SUSPEND_SUSPEND2 (0x04)
60 #define SUSPEND_SUSPEND3 (0x08)
61 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
62 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
64 struct smsc95xx_priv {
69 spinlock_t mac_cr_lock;
74 static bool turbo_mode = true;
75 module_param(turbo_mode, bool, 0644);
76 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
78 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
83 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
90 fn = usbnet_read_cmd_nopm;
92 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
93 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
95 if (unlikely(ret < 0))
96 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
105 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
115 fn = usbnet_write_cmd;
117 fn = usbnet_write_cmd_nopm;
122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
125 if (unlikely(ret < 0))
126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
132 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
135 return __smsc95xx_read_reg(dev, index, data, 1);
138 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
141 return __smsc95xx_write_reg(dev, index, data, 1);
144 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
147 return __smsc95xx_read_reg(dev, index, data, 0);
150 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
153 return __smsc95xx_write_reg(dev, index, data, 0);
156 /* Loop until the read is completed with timeout
157 * called with phy_mutex held */
158 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
161 unsigned long start_time = jiffies;
166 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm);
168 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
172 if (!(val & MII_BUSY_))
174 } while (!time_after(jiffies, start_time + HZ));
179 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
182 struct usbnet *dev = netdev_priv(netdev);
186 mutex_lock(&dev->phy_mutex);
188 /* confirm MII not busy */
189 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
191 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
195 /* set the address, index & direction (read from PHY) */
196 phy_id &= dev->mii.phy_id_mask;
197 idx &= dev->mii.reg_num_mask;
198 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
199 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
201 netdev_warn(dev->net, "Error writing MII_ADDR\n");
205 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
207 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
211 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm);
213 netdev_warn(dev->net, "Error reading MII_DATA\n");
217 ret = (u16)(val & 0xFFFF);
220 mutex_unlock(&dev->phy_mutex);
224 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
225 int idx, int regval, int in_pm)
227 struct usbnet *dev = netdev_priv(netdev);
231 mutex_lock(&dev->phy_mutex);
233 /* confirm MII not busy */
234 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
236 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
241 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm);
243 netdev_warn(dev->net, "Error writing MII_DATA\n");
247 /* set the address, index & direction (write to PHY) */
248 phy_id &= dev->mii.phy_id_mask;
249 idx &= dev->mii.reg_num_mask;
250 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
251 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
253 netdev_warn(dev->net, "Error writing MII_ADDR\n");
257 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
259 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
264 mutex_unlock(&dev->phy_mutex);
267 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
270 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1);
273 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
276 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1);
279 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
281 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
284 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
287 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
290 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
292 unsigned long start_time = jiffies;
297 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
299 netdev_warn(dev->net, "Error reading E2P_CMD\n");
303 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
306 } while (!time_after(jiffies, start_time + HZ));
308 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
309 netdev_warn(dev->net, "EEPROM read operation timeout\n");
316 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
318 unsigned long start_time = jiffies;
323 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
325 netdev_warn(dev->net, "Error reading E2P_CMD\n");
329 if (!(val & E2P_CMD_BUSY_))
333 } while (!time_after(jiffies, start_time + HZ));
335 netdev_warn(dev->net, "EEPROM is busy\n");
339 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
348 ret = smsc95xx_eeprom_confirm_not_busy(dev);
352 for (i = 0; i < length; i++) {
353 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
354 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
356 netdev_warn(dev->net, "Error writing E2P_CMD\n");
360 ret = smsc95xx_wait_eeprom(dev);
364 ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
366 netdev_warn(dev->net, "Error reading E2P_DATA\n");
370 data[i] = val & 0xFF;
377 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
386 ret = smsc95xx_eeprom_confirm_not_busy(dev);
390 /* Issue write/erase enable command */
391 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
392 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
394 netdev_warn(dev->net, "Error writing E2P_DATA\n");
398 ret = smsc95xx_wait_eeprom(dev);
402 for (i = 0; i < length; i++) {
404 /* Fill data register */
406 ret = smsc95xx_write_reg(dev, E2P_DATA, val);
408 netdev_warn(dev->net, "Error writing E2P_DATA\n");
412 /* Send "write" command */
413 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
414 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
416 netdev_warn(dev->net, "Error writing E2P_CMD\n");
420 ret = smsc95xx_wait_eeprom(dev);
430 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
440 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
441 USB_DIR_OUT | USB_TYPE_VENDOR |
443 0, index, &buf, size);
445 netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
450 /* returns hash bit number for given MAC address
452 * 01 00 5E 00 00 01 -> returns bit number 31 */
453 static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
455 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
458 static void smsc95xx_set_multicast(struct net_device *netdev)
460 struct usbnet *dev = netdev_priv(netdev);
461 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
468 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
470 if (dev->net->flags & IFF_PROMISC) {
471 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
472 pdata->mac_cr |= MAC_CR_PRMS_;
473 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
474 } else if (dev->net->flags & IFF_ALLMULTI) {
475 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
476 pdata->mac_cr |= MAC_CR_MCPAS_;
477 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
478 } else if (!netdev_mc_empty(dev->net)) {
479 struct netdev_hw_addr *ha;
481 pdata->mac_cr |= MAC_CR_HPFILT_;
482 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
484 netdev_for_each_mc_addr(ha, netdev) {
485 u32 bitnum = smsc95xx_hash(ha->addr);
486 u32 mask = 0x01 << (bitnum & 0x1F);
488 pdata->hash_hi |= mask;
490 pdata->hash_lo |= mask;
493 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
494 pdata->hash_hi, pdata->hash_lo);
496 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
498 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
501 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
503 /* Initiate async writes, as we can't wait for completion here */
504 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
506 netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
508 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
510 netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
512 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
514 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
517 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
518 u16 lcladv, u16 rmtadv)
520 u32 flow, afc_cfg = 0;
522 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
526 if (duplex == DUPLEX_FULL) {
527 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
529 if (cap & FLOW_CTRL_RX)
534 if (cap & FLOW_CTRL_TX)
539 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
540 cap & FLOW_CTRL_RX ? "enabled" : "disabled",
541 cap & FLOW_CTRL_TX ? "enabled" : "disabled");
543 netif_dbg(dev, link, dev->net, "half duplex\n");
548 ret = smsc95xx_write_reg(dev, FLOW, flow);
552 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
555 static int smsc95xx_link_reset(struct usbnet *dev)
557 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
558 struct mii_if_info *mii = &dev->mii;
559 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
564 /* clear interrupt status */
565 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
569 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
573 mii_check_media(mii, 1, 1);
574 mii_ethtool_gset(&dev->mii, &ecmd);
575 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
576 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
578 netif_dbg(dev, link, dev->net,
579 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
580 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
582 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
583 if (ecmd.duplex != DUPLEX_FULL) {
584 pdata->mac_cr &= ~MAC_CR_FDPX_;
585 pdata->mac_cr |= MAC_CR_RCVOWN_;
587 pdata->mac_cr &= ~MAC_CR_RCVOWN_;
588 pdata->mac_cr |= MAC_CR_FDPX_;
590 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
592 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
596 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
598 netdev_warn(dev->net, "Error updating PHY flow control\n");
603 static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
607 if (urb->actual_length != 4) {
608 netdev_warn(dev->net, "unexpected urb length %d\n",
613 memcpy(&intdata, urb->transfer_buffer, 4);
614 le32_to_cpus(&intdata);
616 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
618 if (intdata & INT_ENP_PHY_INT_)
619 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
621 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
625 /* Enable or disable Tx & Rx checksum offload engines */
626 static int smsc95xx_set_features(struct net_device *netdev,
627 netdev_features_t features)
629 struct usbnet *dev = netdev_priv(netdev);
633 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
637 if (features & NETIF_F_HW_CSUM)
638 read_buf |= Tx_COE_EN_;
640 read_buf &= ~Tx_COE_EN_;
642 if (features & NETIF_F_RXCSUM)
643 read_buf |= Rx_COE_EN_;
645 read_buf &= ~Rx_COE_EN_;
647 ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
651 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
655 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
657 return MAX_EEPROM_SIZE;
660 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
661 struct ethtool_eeprom *ee, u8 *data)
663 struct usbnet *dev = netdev_priv(netdev);
665 ee->magic = LAN95XX_EEPROM_MAGIC;
667 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
670 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
671 struct ethtool_eeprom *ee, u8 *data)
673 struct usbnet *dev = netdev_priv(netdev);
675 if (ee->magic != LAN95XX_EEPROM_MAGIC) {
676 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
681 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
684 static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
686 /* all smsc95xx registers */
687 return COE_CR - ID_REV + sizeof(u32);
691 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
694 struct usbnet *dev = netdev_priv(netdev);
699 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version);
701 netdev_warn(netdev, "REGS: cannot read ID_REV\n");
705 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
706 retval = smsc95xx_read_reg(dev, i, &data[j]);
708 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
714 static void smsc95xx_ethtool_get_wol(struct net_device *net,
715 struct ethtool_wolinfo *wolinfo)
717 struct usbnet *dev = netdev_priv(net);
718 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
720 wolinfo->supported = SUPPORTED_WAKE;
721 wolinfo->wolopts = pdata->wolopts;
724 static int smsc95xx_ethtool_set_wol(struct net_device *net,
725 struct ethtool_wolinfo *wolinfo)
727 struct usbnet *dev = netdev_priv(net);
728 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
731 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
733 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
735 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
740 static const struct ethtool_ops smsc95xx_ethtool_ops = {
741 .get_link = usbnet_get_link,
742 .nway_reset = usbnet_nway_reset,
743 .get_drvinfo = usbnet_get_drvinfo,
744 .get_msglevel = usbnet_get_msglevel,
745 .set_msglevel = usbnet_set_msglevel,
746 .get_settings = usbnet_get_settings,
747 .set_settings = usbnet_set_settings,
748 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len,
749 .get_eeprom = smsc95xx_ethtool_get_eeprom,
750 .set_eeprom = smsc95xx_ethtool_set_eeprom,
751 .get_regs_len = smsc95xx_ethtool_getregslen,
752 .get_regs = smsc95xx_ethtool_getregs,
753 .get_wol = smsc95xx_ethtool_get_wol,
754 .set_wol = smsc95xx_ethtool_set_wol,
757 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
759 struct usbnet *dev = netdev_priv(netdev);
761 if (!netif_running(netdev))
764 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
767 static void smsc95xx_init_mac_address(struct usbnet *dev)
769 /* try reading mac address from EEPROM */
770 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
771 dev->net->dev_addr) == 0) {
772 if (is_valid_ether_addr(dev->net->dev_addr)) {
773 /* eeprom values are valid so use them */
774 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
779 /* no eeprom, or eeprom values are invalid. generate random MAC */
780 eth_hw_addr_random(dev->net);
781 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
784 static int smsc95xx_set_mac_address(struct usbnet *dev)
786 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
787 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
788 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
791 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
795 return smsc95xx_write_reg(dev, ADDRH, addr_hi);
798 /* starts the TX path */
799 static int smsc95xx_start_tx_path(struct usbnet *dev)
801 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
805 /* Enable Tx at MAC */
806 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
807 pdata->mac_cr |= MAC_CR_TXEN_;
808 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
810 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
814 /* Enable Tx at SCSRs */
815 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
818 /* Starts the Receive path */
819 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
821 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
824 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
825 pdata->mac_cr |= MAC_CR_RXEN_;
826 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
828 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
831 static int smsc95xx_phy_initialize(struct usbnet *dev)
833 int bmcr, ret, timeout = 0;
835 /* Initialize MII structure */
836 dev->mii.dev = dev->net;
837 dev->mii.mdio_read = smsc95xx_mdio_read;
838 dev->mii.mdio_write = smsc95xx_mdio_write;
839 dev->mii.phy_id_mask = 0x1f;
840 dev->mii.reg_num_mask = 0x1f;
841 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
843 /* reset phy and wait for reset to complete */
844 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
848 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
850 } while ((bmcr & BMCR_RESET) && (timeout < 100));
852 if (timeout >= 100) {
853 netdev_warn(dev->net, "timeout on PHY Reset");
857 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
858 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
859 ADVERTISE_PAUSE_ASYM);
862 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
864 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
868 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
869 PHY_INT_MASK_DEFAULT_);
870 mii_nway_restart(&dev->mii);
872 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
876 static int smsc95xx_reset(struct usbnet *dev)
878 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
879 u32 read_buf, write_buf, burst_cap;
880 int ret = 0, timeout;
882 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
884 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
891 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
895 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
897 if (timeout >= 100) {
898 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
902 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
909 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
913 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
915 if (timeout >= 100) {
916 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
920 ret = smsc95xx_set_mac_address(dev);
924 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
927 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
931 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
934 read_buf |= HW_CFG_BIR_;
936 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
940 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
944 netif_dbg(dev, ifup, dev->net,
945 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
950 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
951 } else if (dev->udev->speed == USB_SPEED_HIGH) {
952 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
953 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
955 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
956 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
959 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
960 (ulong)dev->rx_urb_size);
962 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
966 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
970 netif_dbg(dev, ifup, dev->net,
971 "Read Value from BURST_CAP after writing: 0x%08x\n",
974 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
978 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
982 netif_dbg(dev, ifup, dev->net,
983 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
986 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
990 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
994 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
996 read_buf &= ~HW_CFG_RXDOFF_;
998 /* set Rx data offset=2, Make IP header aligns on word boundary. */
999 read_buf |= NET_IP_ALIGN << 9;
1001 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
1005 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1009 netif_dbg(dev, ifup, dev->net,
1010 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
1012 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1016 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
1019 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
1021 /* Configure GPIO pins as LED outputs */
1022 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
1023 LED_GPIO_CFG_FDX_LED;
1024 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
1029 ret = smsc95xx_write_reg(dev, FLOW, 0);
1033 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
1037 /* Don't need mac_cr_lock during initialisation */
1038 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
1044 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
1048 /* Enable or disable checksum offload engines */
1049 ret = smsc95xx_set_features(dev->net, dev->net->features);
1051 netdev_warn(dev->net, "Failed to set checksum offload features\n");
1055 smsc95xx_set_multicast(dev->net);
1057 ret = smsc95xx_phy_initialize(dev);
1059 netdev_warn(dev->net, "Failed to init PHY\n");
1063 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
1067 /* enable PHY interrupts */
1068 read_buf |= INT_EP_CTL_PHY_INT_;
1070 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1074 ret = smsc95xx_start_tx_path(dev);
1076 netdev_warn(dev->net, "Failed to start TX path\n");
1080 ret = smsc95xx_start_rx_path(dev, 0);
1082 netdev_warn(dev->net, "Failed to start RX path\n");
1086 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
1090 static const struct net_device_ops smsc95xx_netdev_ops = {
1091 .ndo_open = usbnet_open,
1092 .ndo_stop = usbnet_stop,
1093 .ndo_start_xmit = usbnet_start_xmit,
1094 .ndo_tx_timeout = usbnet_tx_timeout,
1095 .ndo_change_mtu = usbnet_change_mtu,
1096 .ndo_set_mac_address = eth_mac_addr,
1097 .ndo_validate_addr = eth_validate_addr,
1098 .ndo_do_ioctl = smsc95xx_ioctl,
1099 .ndo_set_rx_mode = smsc95xx_set_multicast,
1100 .ndo_set_features = smsc95xx_set_features,
1103 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
1105 struct smsc95xx_priv *pdata = NULL;
1109 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1111 ret = usbnet_get_endpoints(dev, intf);
1113 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1117 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
1120 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1124 spin_lock_init(&pdata->mac_cr_lock);
1126 if (DEFAULT_TX_CSUM_ENABLE)
1127 dev->net->features |= NETIF_F_HW_CSUM;
1128 if (DEFAULT_RX_CSUM_ENABLE)
1129 dev->net->features |= NETIF_F_RXCSUM;
1131 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
1133 smsc95xx_init_mac_address(dev);
1135 /* Init all registers */
1136 ret = smsc95xx_reset(dev);
1138 /* detect device revision as different features may be available */
1139 ret = smsc95xx_read_reg(dev, ID_REV, &val);
1144 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
1145 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
1146 pdata->features = (FEATURE_8_WAKEUP_FILTERS |
1147 FEATURE_PHY_NLP_CROSSOVER |
1148 FEATURE_REMOTE_WAKEUP);
1149 else if (val == ID_REV_CHIP_ID_9512_)
1150 pdata->features = FEATURE_8_WAKEUP_FILTERS;
1152 dev->net->netdev_ops = &smsc95xx_netdev_ops;
1153 dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
1154 dev->net->flags |= IFF_MULTICAST;
1155 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
1156 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1160 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1162 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1164 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1171 static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
1173 u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
1174 return crc << ((filter % 2) * 16);
1177 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1179 struct mii_if_info *mii = &dev->mii;
1182 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1185 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1189 /* enable interrupt source */
1190 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1196 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1201 static int smsc95xx_link_ok_nopm(struct usbnet *dev)
1203 struct mii_if_info *mii = &dev->mii;
1206 /* first, a dummy read, needed to latch some MII phys */
1207 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1211 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1215 return !!(ret & BMSR_LSTATUS);
1218 static int smsc95xx_enter_suspend0(struct usbnet *dev)
1220 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1224 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1228 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
1229 val |= PM_CTL_SUS_MODE_0;
1231 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1235 /* clear wol status */
1236 val &= ~PM_CTL_WUPS_;
1237 val |= PM_CTL_WUPS_WOL_;
1239 /* enable energy detection */
1240 if (pdata->wolopts & WAKE_PHY)
1241 val |= PM_CTL_WUPS_ED_;
1243 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1247 /* read back PM_CTRL */
1248 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1252 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1257 static int smsc95xx_enter_suspend1(struct usbnet *dev)
1259 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1260 struct mii_if_info *mii = &dev->mii;
1264 /* reconfigure link pulse detection timing for
1265 * compatibility with non-standard link partners
1267 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
1268 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG,
1269 PHY_EDPD_CONFIG_DEFAULT);
1271 /* enable energy detect power-down mode */
1272 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS);
1276 ret |= MODE_CTRL_STS_EDPWRDOWN_;
1278 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret);
1280 /* enter SUSPEND1 mode */
1281 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1285 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1286 val |= PM_CTL_SUS_MODE_1;
1288 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1292 /* clear wol status, enable energy detection */
1293 val &= ~PM_CTL_WUPS_;
1294 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
1296 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1300 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1305 static int smsc95xx_enter_suspend2(struct usbnet *dev)
1307 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1311 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1315 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1316 val |= PM_CTL_SUS_MODE_2;
1318 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1322 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1327 static int smsc95xx_enter_suspend3(struct usbnet *dev)
1329 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1333 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val);
1338 netdev_info(dev->net, "rx fifo not empty in autosuspend\n");
1342 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1346 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1347 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS;
1349 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1353 /* clear wol status */
1354 val &= ~PM_CTL_WUPS_;
1355 val |= PM_CTL_WUPS_WOL_;
1357 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1361 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1366 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up)
1368 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1371 if (!netif_running(dev->net)) {
1372 /* interface is ifconfig down so fully power down hw */
1373 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1374 return smsc95xx_enter_suspend2(dev);
1378 /* link is down so enter EDPD mode, but only if device can
1379 * reliably resume from it. This check should be redundant
1380 * as current FEATURE_REMOTE_WAKEUP parts also support
1381 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
1382 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) {
1383 netdev_warn(dev->net, "EDPD not supported\n");
1387 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1389 /* enable PHY wakeup events for if cable is attached */
1390 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1391 PHY_INT_MASK_ANEG_COMP_);
1393 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1397 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1398 return smsc95xx_enter_suspend1(dev);
1401 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1402 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1403 PHY_INT_MASK_LINK_DOWN_);
1405 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1409 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1410 return smsc95xx_enter_suspend3(dev);
1413 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
1415 struct usbnet *dev = usb_get_intfdata(intf);
1416 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1420 ret = usbnet_suspend(intf, message);
1422 netdev_warn(dev->net, "usbnet_suspend error\n");
1426 if (pdata->suspend_flags) {
1427 netdev_warn(dev->net, "error during last resume\n");
1428 pdata->suspend_flags = 0;
1431 /* determine if link is up using only _nopm functions */
1432 link_up = smsc95xx_link_ok_nopm(dev);
1434 if (message.event == PM_EVENT_AUTO_SUSPEND &&
1435 (pdata->features & FEATURE_REMOTE_WAKEUP)) {
1436 ret = smsc95xx_autosuspend(dev, link_up);
1440 /* if we get this far we're not autosuspending */
1441 /* if no wol options set, or if link is down and we're not waking on
1442 * PHY activity, enter lowest power SUSPEND2 mode
1444 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1445 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1446 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1448 /* disable energy detect (link up) & wake up events */
1449 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1453 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
1455 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1459 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1463 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
1465 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1469 ret = smsc95xx_enter_suspend2(dev);
1473 if (pdata->wolopts & WAKE_PHY) {
1474 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1475 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_));
1477 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1481 /* if link is down then configure EDPD and enter SUSPEND1,
1482 * otherwise enter SUSPEND0 below
1485 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1486 ret = smsc95xx_enter_suspend1(dev);
1491 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1492 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL);
1496 int wuff_filter_count =
1497 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
1498 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
1502 netdev_warn(dev->net, "Unable to allocate filter_mask\n");
1507 memset(command, 0, sizeof(command));
1508 memset(offset, 0, sizeof(offset));
1509 memset(crc, 0, sizeof(crc));
1511 if (pdata->wolopts & WAKE_BCAST) {
1512 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1513 netdev_info(dev->net, "enabling broadcast detection\n");
1514 filter_mask[filter * 4] = 0x003F;
1515 filter_mask[filter * 4 + 1] = 0x00;
1516 filter_mask[filter * 4 + 2] = 0x00;
1517 filter_mask[filter * 4 + 3] = 0x00;
1518 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1519 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1520 crc[filter/2] |= smsc_crc(bcast, 6, filter);
1524 if (pdata->wolopts & WAKE_MCAST) {
1525 const u8 mcast[] = {0x01, 0x00, 0x5E};
1526 netdev_info(dev->net, "enabling multicast detection\n");
1527 filter_mask[filter * 4] = 0x0007;
1528 filter_mask[filter * 4 + 1] = 0x00;
1529 filter_mask[filter * 4 + 2] = 0x00;
1530 filter_mask[filter * 4 + 3] = 0x00;
1531 command[filter/4] |= 0x09UL << ((filter % 4) * 8);
1532 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1533 crc[filter/2] |= smsc_crc(mcast, 3, filter);
1537 if (pdata->wolopts & WAKE_ARP) {
1538 const u8 arp[] = {0x08, 0x06};
1539 netdev_info(dev->net, "enabling ARP detection\n");
1540 filter_mask[filter * 4] = 0x0003;
1541 filter_mask[filter * 4 + 1] = 0x00;
1542 filter_mask[filter * 4 + 2] = 0x00;
1543 filter_mask[filter * 4 + 3] = 0x00;
1544 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1545 offset[filter/4] |= 0x0C << ((filter % 4) * 8);
1546 crc[filter/2] |= smsc_crc(arp, 2, filter);
1550 if (pdata->wolopts & WAKE_UCAST) {
1551 netdev_info(dev->net, "enabling unicast detection\n");
1552 filter_mask[filter * 4] = 0x003F;
1553 filter_mask[filter * 4 + 1] = 0x00;
1554 filter_mask[filter * 4 + 2] = 0x00;
1555 filter_mask[filter * 4 + 3] = 0x00;
1556 command[filter/4] |= 0x01UL << ((filter % 4) * 8);
1557 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1558 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
1562 for (i = 0; i < (wuff_filter_count * 4); i++) {
1563 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
1571 for (i = 0; i < (wuff_filter_count / 4); i++) {
1572 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
1577 for (i = 0; i < (wuff_filter_count / 4); i++) {
1578 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
1583 for (i = 0; i < (wuff_filter_count / 2); i++) {
1584 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
1589 /* clear any pending pattern match packet status */
1590 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1596 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1601 if (pdata->wolopts & WAKE_MAGIC) {
1602 /* clear any pending magic packet status */
1603 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1609 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1614 /* enable/disable wakeup sources */
1615 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1619 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1620 netdev_info(dev->net, "enabling pattern match wakeup\n");
1621 val |= WUCSR_WAKE_EN_;
1623 netdev_info(dev->net, "disabling pattern match wakeup\n");
1624 val &= ~WUCSR_WAKE_EN_;
1627 if (pdata->wolopts & WAKE_MAGIC) {
1628 netdev_info(dev->net, "enabling magic packet wakeup\n");
1631 netdev_info(dev->net, "disabling magic packet wakeup\n");
1632 val &= ~WUCSR_MPEN_;
1635 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1639 /* enable wol wakeup source */
1640 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1644 val |= PM_CTL_WOL_EN_;
1646 /* phy energy detect wakeup source */
1647 if (pdata->wolopts & WAKE_PHY)
1648 val |= PM_CTL_ED_EN_;
1650 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1654 /* enable receiver to enable frame reception */
1655 smsc95xx_start_rx_path(dev, 1);
1657 /* some wol options are enabled, so enter SUSPEND0 */
1658 netdev_info(dev->net, "entering SUSPEND0 mode\n");
1659 ret = smsc95xx_enter_suspend0(dev);
1663 * TODO: resume() might need to handle the suspend failure
1666 if (ret && PMSG_IS_AUTO(message))
1667 usbnet_resume(intf);
1671 static int smsc95xx_resume(struct usb_interface *intf)
1673 struct usbnet *dev = usb_get_intfdata(intf);
1674 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1675 u8 suspend_flags = pdata->suspend_flags;
1681 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
1683 /* do this first to ensure it's cleared even in error case */
1684 pdata->suspend_flags = 0;
1686 if (suspend_flags & SUSPEND_ALLMODES) {
1687 /* clear wake-up sources */
1688 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1692 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
1694 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1698 /* clear wake-up status */
1699 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1703 val &= ~PM_CTL_WOL_EN_;
1704 val |= PM_CTL_WUPS_;
1706 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1711 ret = usbnet_resume(intf);
1713 netdev_warn(dev->net, "usbnet_resume error\n");
1718 static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
1720 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
1721 skb->ip_summed = CHECKSUM_COMPLETE;
1722 skb_trim(skb, skb->len - 2);
1725 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1727 while (skb->len > 0) {
1728 u32 header, align_count;
1729 struct sk_buff *ax_skb;
1730 unsigned char *packet;
1733 memcpy(&header, skb->data, sizeof(header));
1734 le32_to_cpus(&header);
1735 skb_pull(skb, 4 + NET_IP_ALIGN);
1738 /* get the packet length */
1739 size = (u16)((header & RX_STS_FL_) >> 16);
1740 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
1742 if (unlikely(header & RX_STS_ES_)) {
1743 netif_dbg(dev, rx_err, dev->net,
1744 "Error header=0x%08x\n", header);
1745 dev->net->stats.rx_errors++;
1746 dev->net->stats.rx_dropped++;
1748 if (header & RX_STS_CRC_) {
1749 dev->net->stats.rx_crc_errors++;
1751 if (header & (RX_STS_TL_ | RX_STS_RF_))
1752 dev->net->stats.rx_frame_errors++;
1754 if ((header & RX_STS_LE_) &&
1755 (!(header & RX_STS_FT_)))
1756 dev->net->stats.rx_length_errors++;
1759 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1760 if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1761 netif_dbg(dev, rx_err, dev->net,
1762 "size err header=0x%08x\n", header);
1766 /* last frame in this batch */
1767 if (skb->len == size) {
1768 if (dev->net->features & NETIF_F_RXCSUM)
1769 smsc95xx_rx_csum_offload(skb);
1770 skb_trim(skb, skb->len - 4); /* remove fcs */
1771 skb->truesize = size + sizeof(struct sk_buff);
1776 ax_skb = skb_clone(skb, GFP_ATOMIC);
1777 if (unlikely(!ax_skb)) {
1778 netdev_warn(dev->net, "Error allocating skb\n");
1783 ax_skb->data = packet;
1784 skb_set_tail_pointer(ax_skb, size);
1786 if (dev->net->features & NETIF_F_RXCSUM)
1787 smsc95xx_rx_csum_offload(ax_skb);
1788 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
1789 ax_skb->truesize = size + sizeof(struct sk_buff);
1791 usbnet_skb_return(dev, ax_skb);
1794 skb_pull(skb, size);
1796 /* padding bytes before the next frame starts */
1798 skb_pull(skb, align_count);
1801 if (unlikely(skb->len < 0)) {
1802 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
1809 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
1811 u16 low_16 = (u16)skb_checksum_start_offset(skb);
1812 u16 high_16 = low_16 + skb->csum_offset;
1813 return (high_16 << 16) | low_16;
1816 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
1817 struct sk_buff *skb, gfp_t flags)
1819 bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
1820 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
1821 u32 tx_cmd_a, tx_cmd_b;
1823 /* We do not advertise SG, so skbs should be already linearized */
1824 BUG_ON(skb_shinfo(skb)->nr_frags);
1826 if (skb_headroom(skb) < overhead) {
1827 struct sk_buff *skb2 = skb_copy_expand(skb,
1828 overhead, 0, flags);
1829 dev_kfree_skb_any(skb);
1836 if (skb->len <= 45) {
1837 /* workaround - hardware tx checksum does not work
1838 * properly with extremely small packets */
1839 long csstart = skb_checksum_start_offset(skb);
1840 __wsum calc = csum_partial(skb->data + csstart,
1841 skb->len - csstart, 0);
1842 *((__sum16 *)(skb->data + csstart
1843 + skb->csum_offset)) = csum_fold(calc);
1847 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
1849 cpu_to_le32s(&csum_preamble);
1850 memcpy(skb->data, &csum_preamble, 4);
1855 tx_cmd_b = (u32)(skb->len - 4);
1857 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
1858 cpu_to_le32s(&tx_cmd_b);
1859 memcpy(skb->data, &tx_cmd_b, 4);
1862 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
1864 cpu_to_le32s(&tx_cmd_a);
1865 memcpy(skb->data, &tx_cmd_a, 4);
1870 static int smsc95xx_manage_power(struct usbnet *dev, int on)
1872 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1874 dev->intf->needs_remote_wakeup = on;
1876 if (pdata->features & FEATURE_REMOTE_WAKEUP)
1879 /* this chip revision isn't capable of remote wakeup */
1880 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n");
1883 usb_autopm_get_interface_no_resume(dev->intf);
1885 usb_autopm_put_interface(dev->intf);
1890 static const struct driver_info smsc95xx_info = {
1891 .description = "smsc95xx USB 2.0 Ethernet",
1892 .bind = smsc95xx_bind,
1893 .unbind = smsc95xx_unbind,
1894 .link_reset = smsc95xx_link_reset,
1895 .reset = smsc95xx_reset,
1896 .rx_fixup = smsc95xx_rx_fixup,
1897 .tx_fixup = smsc95xx_tx_fixup,
1898 .status = smsc95xx_status,
1899 .manage_power = smsc95xx_manage_power,
1900 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
1903 static const struct usb_device_id products[] = {
1905 /* SMSC9500 USB Ethernet Device */
1906 USB_DEVICE(0x0424, 0x9500),
1907 .driver_info = (unsigned long) &smsc95xx_info,
1910 /* SMSC9505 USB Ethernet Device */
1911 USB_DEVICE(0x0424, 0x9505),
1912 .driver_info = (unsigned long) &smsc95xx_info,
1915 /* SMSC9500A USB Ethernet Device */
1916 USB_DEVICE(0x0424, 0x9E00),
1917 .driver_info = (unsigned long) &smsc95xx_info,
1920 /* SMSC9505A USB Ethernet Device */
1921 USB_DEVICE(0x0424, 0x9E01),
1922 .driver_info = (unsigned long) &smsc95xx_info,
1925 /* SMSC9512/9514 USB Hub & Ethernet Device */
1926 USB_DEVICE(0x0424, 0xec00),
1927 .driver_info = (unsigned long) &smsc95xx_info,
1930 /* SMSC9500 USB Ethernet Device (SAL10) */
1931 USB_DEVICE(0x0424, 0x9900),
1932 .driver_info = (unsigned long) &smsc95xx_info,
1935 /* SMSC9505 USB Ethernet Device (SAL10) */
1936 USB_DEVICE(0x0424, 0x9901),
1937 .driver_info = (unsigned long) &smsc95xx_info,
1940 /* SMSC9500A USB Ethernet Device (SAL10) */
1941 USB_DEVICE(0x0424, 0x9902),
1942 .driver_info = (unsigned long) &smsc95xx_info,
1945 /* SMSC9505A USB Ethernet Device (SAL10) */
1946 USB_DEVICE(0x0424, 0x9903),
1947 .driver_info = (unsigned long) &smsc95xx_info,
1950 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1951 USB_DEVICE(0x0424, 0x9904),
1952 .driver_info = (unsigned long) &smsc95xx_info,
1955 /* SMSC9500A USB Ethernet Device (HAL) */
1956 USB_DEVICE(0x0424, 0x9905),
1957 .driver_info = (unsigned long) &smsc95xx_info,
1960 /* SMSC9505A USB Ethernet Device (HAL) */
1961 USB_DEVICE(0x0424, 0x9906),
1962 .driver_info = (unsigned long) &smsc95xx_info,
1965 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1966 USB_DEVICE(0x0424, 0x9907),
1967 .driver_info = (unsigned long) &smsc95xx_info,
1970 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1971 USB_DEVICE(0x0424, 0x9908),
1972 .driver_info = (unsigned long) &smsc95xx_info,
1975 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
1976 USB_DEVICE(0x0424, 0x9909),
1977 .driver_info = (unsigned long) &smsc95xx_info,
1980 /* SMSC LAN9530 USB Ethernet Device */
1981 USB_DEVICE(0x0424, 0x9530),
1982 .driver_info = (unsigned long) &smsc95xx_info,
1985 /* SMSC LAN9730 USB Ethernet Device */
1986 USB_DEVICE(0x0424, 0x9730),
1987 .driver_info = (unsigned long) &smsc95xx_info,
1990 /* SMSC LAN89530 USB Ethernet Device */
1991 USB_DEVICE(0x0424, 0x9E08),
1992 .driver_info = (unsigned long) &smsc95xx_info,
1996 MODULE_DEVICE_TABLE(usb, products);
1998 static struct usb_driver smsc95xx_driver = {
2000 .id_table = products,
2001 .probe = usbnet_probe,
2002 .suspend = smsc95xx_suspend,
2003 .resume = smsc95xx_resume,
2004 .reset_resume = smsc95xx_resume,
2005 .disconnect = usbnet_disconnect,
2006 .disable_hub_initiated_lpm = 1,
2007 .supports_autosuspend = 1,
2010 module_usb_driver(smsc95xx_driver);
2012 MODULE_AUTHOR("Nancy Lin");
2013 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2014 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2015 MODULE_LICENSE("GPL");