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/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>
34 #define SMSC_CHIPNAME "smsc95xx"
35 #define SMSC_DRIVER_VERSION "1.0.4"
36 #define HS_USB_PKT_SIZE (512)
37 #define FS_USB_PKT_SIZE (64)
38 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
39 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
40 #define DEFAULT_BULK_IN_DELAY (0x00002000)
41 #define MAX_SINGLE_PACKET_SIZE (2048)
42 #define LAN95XX_EEPROM_MAGIC (0x9500)
43 #define EEPROM_MAC_OFFSET (0x01)
44 #define DEFAULT_TX_CSUM_ENABLE (true)
45 #define DEFAULT_RX_CSUM_ENABLE (true)
46 #define SMSC95XX_INTERNAL_PHY_ID (1)
47 #define SMSC95XX_TX_OVERHEAD (8)
48 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
49 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
50 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
52 #define FEATURE_8_WAKEUP_FILTERS (0x01)
53 #define FEATURE_PHY_NLP_CROSSOVER (0x02)
54 #define FEATURE_REMOTE_WAKEUP (0x04)
56 #define SUSPEND_SUSPEND0 (0x01)
57 #define SUSPEND_SUSPEND1 (0x02)
58 #define SUSPEND_SUSPEND2 (0x04)
59 #define SUSPEND_SUSPEND3 (0x08)
60 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
61 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
63 struct smsc95xx_priv {
68 spinlock_t mac_cr_lock;
73 static bool turbo_mode = true;
74 module_param(turbo_mode, bool, 0644);
75 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
77 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
82 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
89 fn = usbnet_read_cmd_nopm;
91 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
92 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
94 if (unlikely(ret < 0))
95 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
104 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
109 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
114 fn = usbnet_write_cmd;
116 fn = usbnet_write_cmd_nopm;
121 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
122 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
124 if (unlikely(ret < 0))
125 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
131 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
134 return __smsc95xx_read_reg(dev, index, data, 1);
137 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
140 return __smsc95xx_write_reg(dev, index, data, 1);
143 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
146 return __smsc95xx_read_reg(dev, index, data, 0);
149 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
152 return __smsc95xx_write_reg(dev, index, data, 0);
155 /* Loop until the read is completed with timeout
156 * called with phy_mutex held */
157 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
160 unsigned long start_time = jiffies;
165 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm);
167 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
171 if (!(val & MII_BUSY_))
173 } while (!time_after(jiffies, start_time + HZ));
178 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
181 struct usbnet *dev = netdev_priv(netdev);
185 mutex_lock(&dev->phy_mutex);
187 /* confirm MII not busy */
188 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
190 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
194 /* set the address, index & direction (read from PHY) */
195 phy_id &= dev->mii.phy_id_mask;
196 idx &= dev->mii.reg_num_mask;
197 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
198 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
200 netdev_warn(dev->net, "Error writing MII_ADDR\n");
204 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
206 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
210 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm);
212 netdev_warn(dev->net, "Error reading MII_DATA\n");
216 ret = (u16)(val & 0xFFFF);
219 mutex_unlock(&dev->phy_mutex);
223 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
224 int idx, int regval, int in_pm)
226 struct usbnet *dev = netdev_priv(netdev);
230 mutex_lock(&dev->phy_mutex);
232 /* confirm MII not busy */
233 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
235 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
240 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm);
242 netdev_warn(dev->net, "Error writing MII_DATA\n");
246 /* set the address, index & direction (write to PHY) */
247 phy_id &= dev->mii.phy_id_mask;
248 idx &= dev->mii.reg_num_mask;
249 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
250 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
252 netdev_warn(dev->net, "Error writing MII_ADDR\n");
256 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
258 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
263 mutex_unlock(&dev->phy_mutex);
266 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
269 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1);
272 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
275 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1);
278 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
280 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
283 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
286 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
289 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
291 unsigned long start_time = jiffies;
296 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
298 netdev_warn(dev->net, "Error reading E2P_CMD\n");
302 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
305 } while (!time_after(jiffies, start_time + HZ));
307 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
308 netdev_warn(dev->net, "EEPROM read operation timeout\n");
315 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
317 unsigned long start_time = jiffies;
322 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
324 netdev_warn(dev->net, "Error reading E2P_CMD\n");
328 if (!(val & E2P_CMD_BUSY_))
332 } while (!time_after(jiffies, start_time + HZ));
334 netdev_warn(dev->net, "EEPROM is busy\n");
338 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
347 ret = smsc95xx_eeprom_confirm_not_busy(dev);
351 for (i = 0; i < length; i++) {
352 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
353 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
355 netdev_warn(dev->net, "Error writing E2P_CMD\n");
359 ret = smsc95xx_wait_eeprom(dev);
363 ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
365 netdev_warn(dev->net, "Error reading E2P_DATA\n");
369 data[i] = val & 0xFF;
376 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
385 ret = smsc95xx_eeprom_confirm_not_busy(dev);
389 /* Issue write/erase enable command */
390 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
391 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
393 netdev_warn(dev->net, "Error writing E2P_DATA\n");
397 ret = smsc95xx_wait_eeprom(dev);
401 for (i = 0; i < length; i++) {
403 /* Fill data register */
405 ret = smsc95xx_write_reg(dev, E2P_DATA, val);
407 netdev_warn(dev->net, "Error writing E2P_DATA\n");
411 /* Send "write" command */
412 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
413 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
415 netdev_warn(dev->net, "Error writing E2P_CMD\n");
419 ret = smsc95xx_wait_eeprom(dev);
429 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
439 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
440 USB_DIR_OUT | USB_TYPE_VENDOR |
442 0, index, &buf, size);
444 netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
449 /* returns hash bit number for given MAC address
451 * 01 00 5E 00 00 01 -> returns bit number 31 */
452 static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
454 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
457 static void smsc95xx_set_multicast(struct net_device *netdev)
459 struct usbnet *dev = netdev_priv(netdev);
460 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
467 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
469 if (dev->net->flags & IFF_PROMISC) {
470 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
471 pdata->mac_cr |= MAC_CR_PRMS_;
472 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
473 } else if (dev->net->flags & IFF_ALLMULTI) {
474 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
475 pdata->mac_cr |= MAC_CR_MCPAS_;
476 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
477 } else if (!netdev_mc_empty(dev->net)) {
478 struct netdev_hw_addr *ha;
480 pdata->mac_cr |= MAC_CR_HPFILT_;
481 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
483 netdev_for_each_mc_addr(ha, netdev) {
484 u32 bitnum = smsc95xx_hash(ha->addr);
485 u32 mask = 0x01 << (bitnum & 0x1F);
487 pdata->hash_hi |= mask;
489 pdata->hash_lo |= mask;
492 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
493 pdata->hash_hi, pdata->hash_lo);
495 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
497 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
500 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
502 /* Initiate async writes, as we can't wait for completion here */
503 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
505 netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
507 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
509 netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
511 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
513 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
516 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
517 u16 lcladv, u16 rmtadv)
519 u32 flow, afc_cfg = 0;
521 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
525 if (duplex == DUPLEX_FULL) {
526 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
528 if (cap & FLOW_CTRL_RX)
533 if (cap & FLOW_CTRL_TX)
538 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
539 cap & FLOW_CTRL_RX ? "enabled" : "disabled",
540 cap & FLOW_CTRL_TX ? "enabled" : "disabled");
542 netif_dbg(dev, link, dev->net, "half duplex\n");
547 ret = smsc95xx_write_reg(dev, FLOW, flow);
551 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
554 static int smsc95xx_link_reset(struct usbnet *dev)
556 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
557 struct mii_if_info *mii = &dev->mii;
558 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
563 /* clear interrupt status */
564 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
568 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
572 mii_check_media(mii, 1, 1);
573 mii_ethtool_gset(&dev->mii, &ecmd);
574 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
575 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
577 netif_dbg(dev, link, dev->net,
578 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
579 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
581 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
582 if (ecmd.duplex != DUPLEX_FULL) {
583 pdata->mac_cr &= ~MAC_CR_FDPX_;
584 pdata->mac_cr |= MAC_CR_RCVOWN_;
586 pdata->mac_cr &= ~MAC_CR_RCVOWN_;
587 pdata->mac_cr |= MAC_CR_FDPX_;
589 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
591 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
595 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
597 netdev_warn(dev->net, "Error updating PHY flow control\n");
602 static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
606 if (urb->actual_length != 4) {
607 netdev_warn(dev->net, "unexpected urb length %d\n",
612 memcpy(&intdata, urb->transfer_buffer, 4);
613 le32_to_cpus(&intdata);
615 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
617 if (intdata & INT_ENP_PHY_INT_)
618 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
620 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
624 /* Enable or disable Tx & Rx checksum offload engines */
625 static int smsc95xx_set_features(struct net_device *netdev,
626 netdev_features_t features)
628 struct usbnet *dev = netdev_priv(netdev);
632 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
636 if (features & NETIF_F_HW_CSUM)
637 read_buf |= Tx_COE_EN_;
639 read_buf &= ~Tx_COE_EN_;
641 if (features & NETIF_F_RXCSUM)
642 read_buf |= Rx_COE_EN_;
644 read_buf &= ~Rx_COE_EN_;
646 ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
650 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
654 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
656 return MAX_EEPROM_SIZE;
659 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
660 struct ethtool_eeprom *ee, u8 *data)
662 struct usbnet *dev = netdev_priv(netdev);
664 ee->magic = LAN95XX_EEPROM_MAGIC;
666 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
669 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
670 struct ethtool_eeprom *ee, u8 *data)
672 struct usbnet *dev = netdev_priv(netdev);
674 if (ee->magic != LAN95XX_EEPROM_MAGIC) {
675 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
680 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
683 static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
685 /* all smsc95xx registers */
686 return COE_CR - ID_REV + sizeof(u32);
690 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
693 struct usbnet *dev = netdev_priv(netdev);
698 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version);
700 netdev_warn(netdev, "REGS: cannot read ID_REV\n");
704 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
705 retval = smsc95xx_read_reg(dev, i, &data[j]);
707 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
713 static void smsc95xx_ethtool_get_wol(struct net_device *net,
714 struct ethtool_wolinfo *wolinfo)
716 struct usbnet *dev = netdev_priv(net);
717 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
719 wolinfo->supported = SUPPORTED_WAKE;
720 wolinfo->wolopts = pdata->wolopts;
723 static int smsc95xx_ethtool_set_wol(struct net_device *net,
724 struct ethtool_wolinfo *wolinfo)
726 struct usbnet *dev = netdev_priv(net);
727 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
730 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
733 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
735 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
737 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
742 static const struct ethtool_ops smsc95xx_ethtool_ops = {
743 .get_link = usbnet_get_link,
744 .nway_reset = usbnet_nway_reset,
745 .get_drvinfo = usbnet_get_drvinfo,
746 .get_msglevel = usbnet_get_msglevel,
747 .set_msglevel = usbnet_set_msglevel,
748 .get_settings = usbnet_get_settings,
749 .set_settings = usbnet_set_settings,
750 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len,
751 .get_eeprom = smsc95xx_ethtool_get_eeprom,
752 .set_eeprom = smsc95xx_ethtool_set_eeprom,
753 .get_regs_len = smsc95xx_ethtool_getregslen,
754 .get_regs = smsc95xx_ethtool_getregs,
755 .get_wol = smsc95xx_ethtool_get_wol,
756 .set_wol = smsc95xx_ethtool_set_wol,
759 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
761 struct usbnet *dev = netdev_priv(netdev);
763 if (!netif_running(netdev))
766 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
769 static void smsc95xx_init_mac_address(struct usbnet *dev)
771 /* try reading mac address from EEPROM */
772 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
773 dev->net->dev_addr) == 0) {
774 if (is_valid_ether_addr(dev->net->dev_addr)) {
775 /* eeprom values are valid so use them */
776 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
781 /* no eeprom, or eeprom values are invalid. generate random MAC */
782 eth_hw_addr_random(dev->net);
783 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
786 static int smsc95xx_set_mac_address(struct usbnet *dev)
788 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
789 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
790 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
793 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
797 return smsc95xx_write_reg(dev, ADDRH, addr_hi);
800 /* starts the TX path */
801 static int smsc95xx_start_tx_path(struct usbnet *dev)
803 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
807 /* Enable Tx at MAC */
808 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
809 pdata->mac_cr |= MAC_CR_TXEN_;
810 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
812 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
816 /* Enable Tx at SCSRs */
817 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
820 /* Starts the Receive path */
821 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
823 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
826 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
827 pdata->mac_cr |= MAC_CR_RXEN_;
828 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
830 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
833 static int smsc95xx_phy_initialize(struct usbnet *dev)
835 int bmcr, ret, timeout = 0;
837 /* Initialize MII structure */
838 dev->mii.dev = dev->net;
839 dev->mii.mdio_read = smsc95xx_mdio_read;
840 dev->mii.mdio_write = smsc95xx_mdio_write;
841 dev->mii.phy_id_mask = 0x1f;
842 dev->mii.reg_num_mask = 0x1f;
843 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
845 /* reset phy and wait for reset to complete */
846 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
850 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
852 } while ((bmcr & BMCR_RESET) && (timeout < 100));
854 if (timeout >= 100) {
855 netdev_warn(dev->net, "timeout on PHY Reset");
859 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
860 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
861 ADVERTISE_PAUSE_ASYM);
864 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
866 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
870 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
871 PHY_INT_MASK_DEFAULT_);
872 mii_nway_restart(&dev->mii);
874 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
878 static int smsc95xx_reset(struct usbnet *dev)
880 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
881 u32 read_buf, write_buf, burst_cap;
882 int ret = 0, timeout;
884 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
886 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
893 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
897 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
899 if (timeout >= 100) {
900 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
904 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
911 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
915 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
917 if (timeout >= 100) {
918 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
922 ret = smsc95xx_set_mac_address(dev);
926 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
929 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
933 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
936 read_buf |= HW_CFG_BIR_;
938 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
942 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
946 netif_dbg(dev, ifup, dev->net,
947 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
952 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
953 } else if (dev->udev->speed == USB_SPEED_HIGH) {
954 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
955 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
957 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
958 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
961 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
962 (ulong)dev->rx_urb_size);
964 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
968 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
972 netif_dbg(dev, ifup, dev->net,
973 "Read Value from BURST_CAP after writing: 0x%08x\n",
976 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
980 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
984 netif_dbg(dev, ifup, dev->net,
985 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
988 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
992 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
996 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
998 read_buf &= ~HW_CFG_RXDOFF_;
1000 /* set Rx data offset=2, Make IP header aligns on word boundary. */
1001 read_buf |= NET_IP_ALIGN << 9;
1003 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
1007 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1011 netif_dbg(dev, ifup, dev->net,
1012 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
1014 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1018 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
1021 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
1023 /* Configure GPIO pins as LED outputs */
1024 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
1025 LED_GPIO_CFG_FDX_LED;
1026 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
1031 ret = smsc95xx_write_reg(dev, FLOW, 0);
1035 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
1039 /* Don't need mac_cr_lock during initialisation */
1040 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
1046 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
1050 /* Enable or disable checksum offload engines */
1051 ret = smsc95xx_set_features(dev->net, dev->net->features);
1053 netdev_warn(dev->net, "Failed to set checksum offload features\n");
1057 smsc95xx_set_multicast(dev->net);
1059 ret = smsc95xx_phy_initialize(dev);
1061 netdev_warn(dev->net, "Failed to init PHY\n");
1065 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
1069 /* enable PHY interrupts */
1070 read_buf |= INT_EP_CTL_PHY_INT_;
1072 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1076 ret = smsc95xx_start_tx_path(dev);
1078 netdev_warn(dev->net, "Failed to start TX path\n");
1082 ret = smsc95xx_start_rx_path(dev, 0);
1084 netdev_warn(dev->net, "Failed to start RX path\n");
1088 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
1092 static const struct net_device_ops smsc95xx_netdev_ops = {
1093 .ndo_open = usbnet_open,
1094 .ndo_stop = usbnet_stop,
1095 .ndo_start_xmit = usbnet_start_xmit,
1096 .ndo_tx_timeout = usbnet_tx_timeout,
1097 .ndo_change_mtu = usbnet_change_mtu,
1098 .ndo_set_mac_address = eth_mac_addr,
1099 .ndo_validate_addr = eth_validate_addr,
1100 .ndo_do_ioctl = smsc95xx_ioctl,
1101 .ndo_set_rx_mode = smsc95xx_set_multicast,
1102 .ndo_set_features = smsc95xx_set_features,
1105 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
1107 struct smsc95xx_priv *pdata = NULL;
1111 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1113 ret = usbnet_get_endpoints(dev, intf);
1115 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1119 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
1122 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1126 spin_lock_init(&pdata->mac_cr_lock);
1128 if (DEFAULT_TX_CSUM_ENABLE)
1129 dev->net->features |= NETIF_F_HW_CSUM;
1130 if (DEFAULT_RX_CSUM_ENABLE)
1131 dev->net->features |= NETIF_F_RXCSUM;
1133 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
1135 smsc95xx_init_mac_address(dev);
1137 /* Init all registers */
1138 ret = smsc95xx_reset(dev);
1142 /* detect device revision as different features may be available */
1143 ret = smsc95xx_read_reg(dev, ID_REV, &val);
1149 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
1150 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
1151 pdata->features = (FEATURE_8_WAKEUP_FILTERS |
1152 FEATURE_PHY_NLP_CROSSOVER |
1153 FEATURE_REMOTE_WAKEUP);
1154 else if (val == ID_REV_CHIP_ID_9512_)
1155 pdata->features = FEATURE_8_WAKEUP_FILTERS;
1157 dev->net->netdev_ops = &smsc95xx_netdev_ops;
1158 dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
1159 dev->net->flags |= IFF_MULTICAST;
1160 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
1161 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1169 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1171 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1173 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1180 static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
1182 u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
1183 return crc << ((filter % 2) * 16);
1186 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1188 struct mii_if_info *mii = &dev->mii;
1191 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1194 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1198 /* enable interrupt source */
1199 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1205 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1210 static int smsc95xx_link_ok_nopm(struct usbnet *dev)
1212 struct mii_if_info *mii = &dev->mii;
1215 /* first, a dummy read, needed to latch some MII phys */
1216 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1220 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1224 return !!(ret & BMSR_LSTATUS);
1227 static int smsc95xx_enter_suspend0(struct usbnet *dev)
1229 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1233 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1237 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
1238 val |= PM_CTL_SUS_MODE_0;
1240 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1244 /* clear wol status */
1245 val &= ~PM_CTL_WUPS_;
1246 val |= PM_CTL_WUPS_WOL_;
1248 /* enable energy detection */
1249 if (pdata->wolopts & WAKE_PHY)
1250 val |= PM_CTL_WUPS_ED_;
1252 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1256 /* read back PM_CTRL */
1257 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1261 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1266 static int smsc95xx_enter_suspend1(struct usbnet *dev)
1268 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1269 struct mii_if_info *mii = &dev->mii;
1273 /* reconfigure link pulse detection timing for
1274 * compatibility with non-standard link partners
1276 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
1277 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG,
1278 PHY_EDPD_CONFIG_DEFAULT);
1280 /* enable energy detect power-down mode */
1281 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS);
1285 ret |= MODE_CTRL_STS_EDPWRDOWN_;
1287 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret);
1289 /* enter SUSPEND1 mode */
1290 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1294 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1295 val |= PM_CTL_SUS_MODE_1;
1297 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1301 /* clear wol status, enable energy detection */
1302 val &= ~PM_CTL_WUPS_;
1303 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
1305 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1309 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1314 static int smsc95xx_enter_suspend2(struct usbnet *dev)
1316 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1320 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1324 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1325 val |= PM_CTL_SUS_MODE_2;
1327 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1331 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1336 static int smsc95xx_enter_suspend3(struct usbnet *dev)
1338 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1342 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val);
1347 netdev_info(dev->net, "rx fifo not empty in autosuspend\n");
1351 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1355 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1356 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS;
1358 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1362 /* clear wol status */
1363 val &= ~PM_CTL_WUPS_;
1364 val |= PM_CTL_WUPS_WOL_;
1366 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1370 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1375 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up)
1377 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1380 if (!netif_running(dev->net)) {
1381 /* interface is ifconfig down so fully power down hw */
1382 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1383 return smsc95xx_enter_suspend2(dev);
1387 /* link is down so enter EDPD mode, but only if device can
1388 * reliably resume from it. This check should be redundant
1389 * as current FEATURE_REMOTE_WAKEUP parts also support
1390 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
1391 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) {
1392 netdev_warn(dev->net, "EDPD not supported\n");
1396 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1398 /* enable PHY wakeup events for if cable is attached */
1399 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1400 PHY_INT_MASK_ANEG_COMP_);
1402 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1406 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1407 return smsc95xx_enter_suspend1(dev);
1410 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1411 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1412 PHY_INT_MASK_LINK_DOWN_);
1414 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1418 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1419 return smsc95xx_enter_suspend3(dev);
1422 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
1424 struct usbnet *dev = usb_get_intfdata(intf);
1425 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1429 ret = usbnet_suspend(intf, message);
1431 netdev_warn(dev->net, "usbnet_suspend error\n");
1435 if (pdata->suspend_flags) {
1436 netdev_warn(dev->net, "error during last resume\n");
1437 pdata->suspend_flags = 0;
1440 /* determine if link is up using only _nopm functions */
1441 link_up = smsc95xx_link_ok_nopm(dev);
1443 if (message.event == PM_EVENT_AUTO_SUSPEND &&
1444 (pdata->features & FEATURE_REMOTE_WAKEUP)) {
1445 ret = smsc95xx_autosuspend(dev, link_up);
1449 /* if we get this far we're not autosuspending */
1450 /* if no wol options set, or if link is down and we're not waking on
1451 * PHY activity, enter lowest power SUSPEND2 mode
1453 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1454 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1455 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1457 /* disable energy detect (link up) & wake up events */
1458 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1462 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
1464 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1468 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1472 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
1474 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1478 ret = smsc95xx_enter_suspend2(dev);
1482 if (pdata->wolopts & WAKE_PHY) {
1483 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1484 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_));
1486 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1490 /* if link is down then configure EDPD and enter SUSPEND1,
1491 * otherwise enter SUSPEND0 below
1494 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1495 ret = smsc95xx_enter_suspend1(dev);
1500 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1501 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL);
1505 int wuff_filter_count =
1506 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
1507 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
1511 netdev_warn(dev->net, "Unable to allocate filter_mask\n");
1516 memset(command, 0, sizeof(command));
1517 memset(offset, 0, sizeof(offset));
1518 memset(crc, 0, sizeof(crc));
1520 if (pdata->wolopts & WAKE_BCAST) {
1521 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1522 netdev_info(dev->net, "enabling broadcast detection\n");
1523 filter_mask[filter * 4] = 0x003F;
1524 filter_mask[filter * 4 + 1] = 0x00;
1525 filter_mask[filter * 4 + 2] = 0x00;
1526 filter_mask[filter * 4 + 3] = 0x00;
1527 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1528 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1529 crc[filter/2] |= smsc_crc(bcast, 6, filter);
1533 if (pdata->wolopts & WAKE_MCAST) {
1534 const u8 mcast[] = {0x01, 0x00, 0x5E};
1535 netdev_info(dev->net, "enabling multicast detection\n");
1536 filter_mask[filter * 4] = 0x0007;
1537 filter_mask[filter * 4 + 1] = 0x00;
1538 filter_mask[filter * 4 + 2] = 0x00;
1539 filter_mask[filter * 4 + 3] = 0x00;
1540 command[filter/4] |= 0x09UL << ((filter % 4) * 8);
1541 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1542 crc[filter/2] |= smsc_crc(mcast, 3, filter);
1546 if (pdata->wolopts & WAKE_ARP) {
1547 const u8 arp[] = {0x08, 0x06};
1548 netdev_info(dev->net, "enabling ARP detection\n");
1549 filter_mask[filter * 4] = 0x0003;
1550 filter_mask[filter * 4 + 1] = 0x00;
1551 filter_mask[filter * 4 + 2] = 0x00;
1552 filter_mask[filter * 4 + 3] = 0x00;
1553 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1554 offset[filter/4] |= 0x0C << ((filter % 4) * 8);
1555 crc[filter/2] |= smsc_crc(arp, 2, filter);
1559 if (pdata->wolopts & WAKE_UCAST) {
1560 netdev_info(dev->net, "enabling unicast detection\n");
1561 filter_mask[filter * 4] = 0x003F;
1562 filter_mask[filter * 4 + 1] = 0x00;
1563 filter_mask[filter * 4 + 2] = 0x00;
1564 filter_mask[filter * 4 + 3] = 0x00;
1565 command[filter/4] |= 0x01UL << ((filter % 4) * 8);
1566 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1567 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
1571 for (i = 0; i < (wuff_filter_count * 4); i++) {
1572 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
1580 for (i = 0; i < (wuff_filter_count / 4); i++) {
1581 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
1586 for (i = 0; i < (wuff_filter_count / 4); i++) {
1587 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
1592 for (i = 0; i < (wuff_filter_count / 2); i++) {
1593 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
1598 /* clear any pending pattern match packet status */
1599 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1605 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1610 if (pdata->wolopts & WAKE_MAGIC) {
1611 /* clear any pending magic packet status */
1612 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1618 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1623 /* enable/disable wakeup sources */
1624 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1628 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1629 netdev_info(dev->net, "enabling pattern match wakeup\n");
1630 val |= WUCSR_WAKE_EN_;
1632 netdev_info(dev->net, "disabling pattern match wakeup\n");
1633 val &= ~WUCSR_WAKE_EN_;
1636 if (pdata->wolopts & WAKE_MAGIC) {
1637 netdev_info(dev->net, "enabling magic packet wakeup\n");
1640 netdev_info(dev->net, "disabling magic packet wakeup\n");
1641 val &= ~WUCSR_MPEN_;
1644 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1648 /* enable wol wakeup source */
1649 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1653 val |= PM_CTL_WOL_EN_;
1655 /* phy energy detect wakeup source */
1656 if (pdata->wolopts & WAKE_PHY)
1657 val |= PM_CTL_ED_EN_;
1659 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1663 /* enable receiver to enable frame reception */
1664 smsc95xx_start_rx_path(dev, 1);
1666 /* some wol options are enabled, so enter SUSPEND0 */
1667 netdev_info(dev->net, "entering SUSPEND0 mode\n");
1668 ret = smsc95xx_enter_suspend0(dev);
1672 * TODO: resume() might need to handle the suspend failure
1675 if (ret && PMSG_IS_AUTO(message))
1676 usbnet_resume(intf);
1680 static int smsc95xx_resume(struct usb_interface *intf)
1682 struct usbnet *dev = usb_get_intfdata(intf);
1683 struct smsc95xx_priv *pdata;
1689 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1690 suspend_flags = pdata->suspend_flags;
1692 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
1694 /* do this first to ensure it's cleared even in error case */
1695 pdata->suspend_flags = 0;
1697 if (suspend_flags & SUSPEND_ALLMODES) {
1698 /* clear wake-up sources */
1699 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1703 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
1705 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1709 /* clear wake-up status */
1710 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1714 val &= ~PM_CTL_WOL_EN_;
1715 val |= PM_CTL_WUPS_;
1717 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1722 ret = usbnet_resume(intf);
1724 netdev_warn(dev->net, "usbnet_resume error\n");
1729 static int smsc95xx_reset_resume(struct usb_interface *intf)
1731 struct usbnet *dev = usb_get_intfdata(intf);
1734 ret = smsc95xx_reset(dev);
1738 return smsc95xx_resume(intf);
1741 static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
1743 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
1744 skb->ip_summed = CHECKSUM_COMPLETE;
1745 skb_trim(skb, skb->len - 2);
1748 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1750 /* This check is no longer done by usbnet */
1751 if (skb->len < dev->net->hard_header_len)
1754 while (skb->len > 0) {
1755 u32 header, align_count;
1756 struct sk_buff *ax_skb;
1757 unsigned char *packet;
1760 memcpy(&header, skb->data, sizeof(header));
1761 le32_to_cpus(&header);
1762 skb_pull(skb, 4 + NET_IP_ALIGN);
1765 /* get the packet length */
1766 size = (u16)((header & RX_STS_FL_) >> 16);
1767 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
1769 if (unlikely(header & RX_STS_ES_)) {
1770 netif_dbg(dev, rx_err, dev->net,
1771 "Error header=0x%08x\n", header);
1772 dev->net->stats.rx_errors++;
1773 dev->net->stats.rx_dropped++;
1775 if (header & RX_STS_CRC_) {
1776 dev->net->stats.rx_crc_errors++;
1778 if (header & (RX_STS_TL_ | RX_STS_RF_))
1779 dev->net->stats.rx_frame_errors++;
1781 if ((header & RX_STS_LE_) &&
1782 (!(header & RX_STS_FT_)))
1783 dev->net->stats.rx_length_errors++;
1786 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1787 if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1788 netif_dbg(dev, rx_err, dev->net,
1789 "size err header=0x%08x\n", header);
1793 /* last frame in this batch */
1794 if (skb->len == size) {
1795 if (dev->net->features & NETIF_F_RXCSUM)
1796 smsc95xx_rx_csum_offload(skb);
1797 skb_trim(skb, skb->len - 4); /* remove fcs */
1798 skb->truesize = size + sizeof(struct sk_buff);
1803 ax_skb = skb_clone(skb, GFP_ATOMIC);
1804 if (unlikely(!ax_skb)) {
1805 netdev_warn(dev->net, "Error allocating skb\n");
1810 ax_skb->data = packet;
1811 skb_set_tail_pointer(ax_skb, size);
1813 if (dev->net->features & NETIF_F_RXCSUM)
1814 smsc95xx_rx_csum_offload(ax_skb);
1815 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
1816 ax_skb->truesize = size + sizeof(struct sk_buff);
1818 usbnet_skb_return(dev, ax_skb);
1821 skb_pull(skb, size);
1823 /* padding bytes before the next frame starts */
1825 skb_pull(skb, align_count);
1831 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
1833 u16 low_16 = (u16)skb_checksum_start_offset(skb);
1834 u16 high_16 = low_16 + skb->csum_offset;
1835 return (high_16 << 16) | low_16;
1838 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
1839 struct sk_buff *skb, gfp_t flags)
1841 bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
1842 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
1843 u32 tx_cmd_a, tx_cmd_b;
1845 /* We do not advertise SG, so skbs should be already linearized */
1846 BUG_ON(skb_shinfo(skb)->nr_frags);
1848 /* Make writable and expand header space by overhead if required */
1849 if (skb_cow_head(skb, overhead)) {
1850 /* Must deallocate here as returning NULL to indicate error
1851 * means the skb won't be deallocated in the caller.
1853 dev_kfree_skb_any(skb);
1858 if (skb->len <= 45) {
1859 /* workaround - hardware tx checksum does not work
1860 * properly with extremely small packets */
1861 long csstart = skb_checksum_start_offset(skb);
1862 __wsum calc = csum_partial(skb->data + csstart,
1863 skb->len - csstart, 0);
1864 *((__sum16 *)(skb->data + csstart
1865 + skb->csum_offset)) = csum_fold(calc);
1869 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
1871 cpu_to_le32s(&csum_preamble);
1872 memcpy(skb->data, &csum_preamble, 4);
1877 tx_cmd_b = (u32)(skb->len - 4);
1879 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
1880 cpu_to_le32s(&tx_cmd_b);
1881 memcpy(skb->data, &tx_cmd_b, 4);
1884 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
1886 cpu_to_le32s(&tx_cmd_a);
1887 memcpy(skb->data, &tx_cmd_a, 4);
1892 static int smsc95xx_manage_power(struct usbnet *dev, int on)
1894 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1896 dev->intf->needs_remote_wakeup = on;
1898 if (pdata->features & FEATURE_REMOTE_WAKEUP)
1901 /* this chip revision isn't capable of remote wakeup */
1902 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n");
1905 usb_autopm_get_interface_no_resume(dev->intf);
1907 usb_autopm_put_interface(dev->intf);
1912 static const struct driver_info smsc95xx_info = {
1913 .description = "smsc95xx USB 2.0 Ethernet",
1914 .bind = smsc95xx_bind,
1915 .unbind = smsc95xx_unbind,
1916 .link_reset = smsc95xx_link_reset,
1917 .reset = smsc95xx_reset,
1918 .rx_fixup = smsc95xx_rx_fixup,
1919 .tx_fixup = smsc95xx_tx_fixup,
1920 .status = smsc95xx_status,
1921 .manage_power = smsc95xx_manage_power,
1922 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
1925 static const struct usb_device_id products[] = {
1927 /* SMSC9500 USB Ethernet Device */
1928 USB_DEVICE(0x0424, 0x9500),
1929 .driver_info = (unsigned long) &smsc95xx_info,
1932 /* SMSC9505 USB Ethernet Device */
1933 USB_DEVICE(0x0424, 0x9505),
1934 .driver_info = (unsigned long) &smsc95xx_info,
1937 /* SMSC9500A USB Ethernet Device */
1938 USB_DEVICE(0x0424, 0x9E00),
1939 .driver_info = (unsigned long) &smsc95xx_info,
1942 /* SMSC9505A USB Ethernet Device */
1943 USB_DEVICE(0x0424, 0x9E01),
1944 .driver_info = (unsigned long) &smsc95xx_info,
1947 /* SMSC9512/9514 USB Hub & Ethernet Device */
1948 USB_DEVICE(0x0424, 0xec00),
1949 .driver_info = (unsigned long) &smsc95xx_info,
1952 /* SMSC9500 USB Ethernet Device (SAL10) */
1953 USB_DEVICE(0x0424, 0x9900),
1954 .driver_info = (unsigned long) &smsc95xx_info,
1957 /* SMSC9505 USB Ethernet Device (SAL10) */
1958 USB_DEVICE(0x0424, 0x9901),
1959 .driver_info = (unsigned long) &smsc95xx_info,
1962 /* SMSC9500A USB Ethernet Device (SAL10) */
1963 USB_DEVICE(0x0424, 0x9902),
1964 .driver_info = (unsigned long) &smsc95xx_info,
1967 /* SMSC9505A USB Ethernet Device (SAL10) */
1968 USB_DEVICE(0x0424, 0x9903),
1969 .driver_info = (unsigned long) &smsc95xx_info,
1972 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1973 USB_DEVICE(0x0424, 0x9904),
1974 .driver_info = (unsigned long) &smsc95xx_info,
1977 /* SMSC9500A USB Ethernet Device (HAL) */
1978 USB_DEVICE(0x0424, 0x9905),
1979 .driver_info = (unsigned long) &smsc95xx_info,
1982 /* SMSC9505A USB Ethernet Device (HAL) */
1983 USB_DEVICE(0x0424, 0x9906),
1984 .driver_info = (unsigned long) &smsc95xx_info,
1987 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1988 USB_DEVICE(0x0424, 0x9907),
1989 .driver_info = (unsigned long) &smsc95xx_info,
1992 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1993 USB_DEVICE(0x0424, 0x9908),
1994 .driver_info = (unsigned long) &smsc95xx_info,
1997 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
1998 USB_DEVICE(0x0424, 0x9909),
1999 .driver_info = (unsigned long) &smsc95xx_info,
2002 /* SMSC LAN9530 USB Ethernet Device */
2003 USB_DEVICE(0x0424, 0x9530),
2004 .driver_info = (unsigned long) &smsc95xx_info,
2007 /* SMSC LAN9730 USB Ethernet Device */
2008 USB_DEVICE(0x0424, 0x9730),
2009 .driver_info = (unsigned long) &smsc95xx_info,
2012 /* SMSC LAN89530 USB Ethernet Device */
2013 USB_DEVICE(0x0424, 0x9E08),
2014 .driver_info = (unsigned long) &smsc95xx_info,
2018 MODULE_DEVICE_TABLE(usb, products);
2020 static struct usb_driver smsc95xx_driver = {
2022 .id_table = products,
2023 .probe = usbnet_probe,
2024 .suspend = smsc95xx_suspend,
2025 .resume = smsc95xx_resume,
2026 .reset_resume = smsc95xx_reset_resume,
2027 .disconnect = usbnet_disconnect,
2028 .disable_hub_initiated_lpm = 1,
2029 .supports_autosuspend = 1,
2032 module_usb_driver(smsc95xx_driver);
2034 MODULE_AUTHOR("Nancy Lin");
2035 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2036 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2037 MODULE_LICENSE("GPL");