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 __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
90 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
97 fn = usbnet_read_cmd_nopm;
99 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
100 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
102 if (unlikely(ret < 0))
103 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
112 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
117 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
122 fn = usbnet_write_cmd;
124 fn = usbnet_write_cmd_nopm;
129 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
130 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
132 if (unlikely(ret < 0))
133 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
139 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
142 return __smsc75xx_read_reg(dev, index, data, 1);
145 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
148 return __smsc75xx_write_reg(dev, index, data, 1);
151 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
154 return __smsc75xx_read_reg(dev, index, data, 0);
157 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
160 return __smsc75xx_write_reg(dev, index, data, 0);
163 /* Loop until the read is completed with timeout
164 * called with phy_mutex held */
165 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
168 unsigned long start_time = jiffies;
173 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
175 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
179 if (!(val & MII_ACCESS_BUSY))
181 } while (!time_after(jiffies, start_time + HZ));
186 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
189 struct usbnet *dev = netdev_priv(netdev);
193 mutex_lock(&dev->phy_mutex);
195 /* confirm MII not busy */
196 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
198 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
202 /* set the address, index & direction (read from PHY) */
203 phy_id &= dev->mii.phy_id_mask;
204 idx &= dev->mii.reg_num_mask;
205 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
206 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
207 | MII_ACCESS_READ | MII_ACCESS_BUSY;
208 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
210 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
214 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
216 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
220 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
222 netdev_warn(dev->net, "Error reading MII_DATA\n");
226 ret = (u16)(val & 0xFFFF);
229 mutex_unlock(&dev->phy_mutex);
233 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
234 int idx, int regval, int in_pm)
236 struct usbnet *dev = netdev_priv(netdev);
240 mutex_lock(&dev->phy_mutex);
242 /* confirm MII not busy */
243 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
245 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
250 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
252 netdev_warn(dev->net, "Error writing MII_DATA\n");
256 /* set the address, index & direction (write to PHY) */
257 phy_id &= dev->mii.phy_id_mask;
258 idx &= dev->mii.reg_num_mask;
259 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
260 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
261 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
262 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
264 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
268 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
270 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
275 mutex_unlock(&dev->phy_mutex);
278 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
281 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
284 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
287 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
290 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
292 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
295 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
298 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
301 static int smsc75xx_wait_eeprom(struct usbnet *dev)
303 unsigned long start_time = jiffies;
308 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
310 netdev_warn(dev->net, "Error reading E2P_CMD\n");
314 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
317 } while (!time_after(jiffies, start_time + HZ));
319 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
320 netdev_warn(dev->net, "EEPROM read operation timeout\n");
327 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
329 unsigned long start_time = jiffies;
334 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
336 netdev_warn(dev->net, "Error reading E2P_CMD\n");
340 if (!(val & E2P_CMD_BUSY))
344 } while (!time_after(jiffies, start_time + HZ));
346 netdev_warn(dev->net, "EEPROM is busy\n");
350 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
359 ret = smsc75xx_eeprom_confirm_not_busy(dev);
363 for (i = 0; i < length; i++) {
364 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
365 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
367 netdev_warn(dev->net, "Error writing E2P_CMD\n");
371 ret = smsc75xx_wait_eeprom(dev);
375 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
377 netdev_warn(dev->net, "Error reading E2P_DATA\n");
381 data[i] = val & 0xFF;
388 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
397 ret = smsc75xx_eeprom_confirm_not_busy(dev);
401 /* Issue write/erase enable command */
402 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
403 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
405 netdev_warn(dev->net, "Error writing E2P_CMD\n");
409 ret = smsc75xx_wait_eeprom(dev);
413 for (i = 0; i < length; i++) {
415 /* Fill data register */
417 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
419 netdev_warn(dev->net, "Error writing E2P_DATA\n");
423 /* Send "write" command */
424 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
425 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
427 netdev_warn(dev->net, "Error writing E2P_CMD\n");
431 ret = smsc75xx_wait_eeprom(dev);
441 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
445 for (i = 0; i < 100; i++) {
447 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
449 netdev_warn(dev->net, "Error reading DP_SEL\n");
453 if (dp_sel & DP_SEL_DPRDY)
459 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
464 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
465 u32 length, u32 *buf)
467 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
471 mutex_lock(&pdata->dataport_mutex);
473 ret = smsc75xx_dataport_wait_not_busy(dev);
475 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
479 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
481 netdev_warn(dev->net, "Error reading DP_SEL\n");
485 dp_sel &= ~DP_SEL_RSEL;
486 dp_sel |= ram_select;
487 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
489 netdev_warn(dev->net, "Error writing DP_SEL\n");
493 for (i = 0; i < length; i++) {
494 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
496 netdev_warn(dev->net, "Error writing DP_ADDR\n");
500 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
502 netdev_warn(dev->net, "Error writing DP_DATA\n");
506 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
508 netdev_warn(dev->net, "Error writing DP_CMD\n");
512 ret = smsc75xx_dataport_wait_not_busy(dev);
514 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
520 mutex_unlock(&pdata->dataport_mutex);
524 /* returns hash bit number for given MAC address */
525 static u32 smsc75xx_hash(char addr[ETH_ALEN])
527 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
530 static void smsc75xx_deferred_multicast_write(struct work_struct *param)
532 struct smsc75xx_priv *pdata =
533 container_of(param, struct smsc75xx_priv, set_multicast);
534 struct usbnet *dev = pdata->dev;
537 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
540 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
541 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
543 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
545 netdev_warn(dev->net, "Error writing RFE_CRL\n");
548 static void smsc75xx_set_multicast(struct net_device *netdev)
550 struct usbnet *dev = netdev_priv(netdev);
551 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
555 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
558 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
559 pdata->rfe_ctl |= RFE_CTL_AB;
561 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
562 pdata->multicast_hash_table[i] = 0;
564 if (dev->net->flags & IFF_PROMISC) {
565 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
566 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
567 } else if (dev->net->flags & IFF_ALLMULTI) {
568 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
569 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
570 } else if (!netdev_mc_empty(dev->net)) {
571 struct netdev_hw_addr *ha;
573 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
575 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
577 netdev_for_each_mc_addr(ha, netdev) {
578 u32 bitnum = smsc75xx_hash(ha->addr);
579 pdata->multicast_hash_table[bitnum / 32] |=
580 (1 << (bitnum % 32));
583 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
584 pdata->rfe_ctl |= RFE_CTL_DPF;
587 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
589 /* defer register writes to a sleepable context */
590 schedule_work(&pdata->set_multicast);
593 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
594 u16 lcladv, u16 rmtadv)
596 u32 flow = 0, fct_flow = 0;
599 if (duplex == DUPLEX_FULL) {
600 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
602 if (cap & FLOW_CTRL_TX) {
603 flow = (FLOW_TX_FCEN | 0xFFFF);
604 /* set fct_flow thresholds to 20% and 80% */
605 fct_flow = (8 << 8) | 32;
608 if (cap & FLOW_CTRL_RX)
609 flow |= FLOW_RX_FCEN;
611 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
612 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
613 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
615 netif_dbg(dev, link, dev->net, "half duplex\n");
618 ret = smsc75xx_write_reg(dev, FLOW, flow);
620 netdev_warn(dev->net, "Error writing FLOW\n");
624 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
626 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
633 static int smsc75xx_link_reset(struct usbnet *dev)
635 struct mii_if_info *mii = &dev->mii;
636 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
640 /* write to clear phy interrupt status */
641 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
642 PHY_INT_SRC_CLEAR_ALL);
644 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
646 netdev_warn(dev->net, "Error writing INT_STS\n");
650 mii_check_media(mii, 1, 1);
651 mii_ethtool_gset(&dev->mii, &ecmd);
652 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
653 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
655 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
656 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
658 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
661 static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
665 if (urb->actual_length != 4) {
666 netdev_warn(dev->net, "unexpected urb length %d\n",
671 memcpy(&intdata, urb->transfer_buffer, 4);
672 le32_to_cpus(&intdata);
674 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
676 if (intdata & INT_ENP_PHY_INT)
677 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
679 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
683 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
685 return MAX_EEPROM_SIZE;
688 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
689 struct ethtool_eeprom *ee, u8 *data)
691 struct usbnet *dev = netdev_priv(netdev);
693 ee->magic = LAN75XX_EEPROM_MAGIC;
695 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
698 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
699 struct ethtool_eeprom *ee, u8 *data)
701 struct usbnet *dev = netdev_priv(netdev);
703 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
704 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
709 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
712 static void smsc75xx_ethtool_get_wol(struct net_device *net,
713 struct ethtool_wolinfo *wolinfo)
715 struct usbnet *dev = netdev_priv(net);
716 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
718 wolinfo->supported = SUPPORTED_WAKE;
719 wolinfo->wolopts = pdata->wolopts;
722 static int smsc75xx_ethtool_set_wol(struct net_device *net,
723 struct ethtool_wolinfo *wolinfo)
725 struct usbnet *dev = netdev_priv(net);
726 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
729 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
731 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
733 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
738 static const struct ethtool_ops smsc75xx_ethtool_ops = {
739 .get_link = usbnet_get_link,
740 .nway_reset = usbnet_nway_reset,
741 .get_drvinfo = usbnet_get_drvinfo,
742 .get_msglevel = usbnet_get_msglevel,
743 .set_msglevel = usbnet_set_msglevel,
744 .get_settings = usbnet_get_settings,
745 .set_settings = usbnet_set_settings,
746 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
747 .get_eeprom = smsc75xx_ethtool_get_eeprom,
748 .set_eeprom = smsc75xx_ethtool_set_eeprom,
749 .get_wol = smsc75xx_ethtool_get_wol,
750 .set_wol = smsc75xx_ethtool_set_wol,
753 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
755 struct usbnet *dev = netdev_priv(netdev);
757 if (!netif_running(netdev))
760 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
763 static void smsc75xx_init_mac_address(struct usbnet *dev)
767 /* maybe the boot loader passed the MAC address in devicetree */
768 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
770 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN);
774 /* try reading mac address from EEPROM */
775 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
776 dev->net->dev_addr) == 0) {
777 if (is_valid_ether_addr(dev->net->dev_addr)) {
778 /* eeprom values are valid so use them */
779 netif_dbg(dev, ifup, dev->net,
780 "MAC address read from EEPROM\n");
785 /* no useful static MAC address found. generate a random one */
786 eth_hw_addr_random(dev->net);
787 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
790 static int smsc75xx_set_mac_address(struct usbnet *dev)
792 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
793 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
794 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
796 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
798 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
802 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
804 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
808 addr_hi |= ADDR_FILTX_FB_VALID;
809 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
811 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
815 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
817 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
822 static int smsc75xx_phy_initialize(struct usbnet *dev)
824 int bmcr, ret, timeout = 0;
826 /* Initialize MII structure */
827 dev->mii.dev = dev->net;
828 dev->mii.mdio_read = smsc75xx_mdio_read;
829 dev->mii.mdio_write = smsc75xx_mdio_write;
830 dev->mii.phy_id_mask = 0x1f;
831 dev->mii.reg_num_mask = 0x1f;
832 dev->mii.supports_gmii = 1;
833 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
835 /* reset phy and wait for reset to complete */
836 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
840 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
842 netdev_warn(dev->net, "Error reading MII_BMCR\n");
846 } while ((bmcr & BMCR_RESET) && (timeout < 100));
848 if (timeout >= 100) {
849 netdev_warn(dev->net, "timeout on PHY Reset\n");
853 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
854 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
855 ADVERTISE_PAUSE_ASYM);
856 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
859 /* read and write to clear phy interrupt status */
860 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
862 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
866 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
868 smsc75xx_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 smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
882 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
884 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
888 rxenabled = ((buf & MAC_RX_RXEN) != 0);
892 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
894 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
899 /* add 4 to size for FCS */
900 buf &= ~MAC_RX_MAX_SIZE;
901 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
903 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
905 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
911 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
913 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
921 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
923 struct usbnet *dev = netdev_priv(netdev);
926 if (new_mtu > MAX_SINGLE_PACKET_SIZE)
929 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
931 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
935 return usbnet_change_mtu(netdev, new_mtu);
938 /* Enable or disable Rx checksum offload engine */
939 static int smsc75xx_set_features(struct net_device *netdev,
940 netdev_features_t features)
942 struct usbnet *dev = netdev_priv(netdev);
943 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
947 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
949 if (features & NETIF_F_RXCSUM)
950 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
952 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
954 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
955 /* it's racing here! */
957 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
959 netdev_warn(dev->net, "Error writing RFE_CTL\n");
964 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
972 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
975 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
979 if (buf & PMT_CTL_DEV_RDY)
984 } while (timeout < 100);
986 netdev_warn(dev->net, "timeout waiting for device ready\n");
990 static int smsc75xx_reset(struct usbnet *dev)
992 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
994 int ret = 0, timeout;
996 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
998 ret = smsc75xx_wait_ready(dev, 0);
1000 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1004 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1006 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1012 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1014 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1021 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1023 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1027 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1029 if (timeout >= 100) {
1030 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1034 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1036 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1038 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1042 buf |= PMT_CTL_PHY_RST;
1044 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1046 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1053 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1055 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1059 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1061 if (timeout >= 100) {
1062 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1066 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1068 ret = smsc75xx_set_mac_address(dev);
1070 netdev_warn(dev->net, "Failed to set mac address\n");
1074 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1075 dev->net->dev_addr);
1077 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1079 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1083 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1088 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1090 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1094 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1096 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1100 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1105 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1106 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1107 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1108 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1110 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1111 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1114 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1115 (ulong)dev->rx_urb_size);
1117 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1119 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1123 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1125 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1129 netif_dbg(dev, ifup, dev->net,
1130 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1132 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1134 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1138 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1140 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1144 netif_dbg(dev, ifup, dev->net,
1145 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1148 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1150 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1154 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1156 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1158 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1160 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1164 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1166 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1170 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1173 /* set FIFO sizes */
1174 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1175 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1177 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1181 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1183 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1184 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1186 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1190 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1192 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1194 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1198 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1200 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1204 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1206 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1208 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1212 /* only set default GPIO/LED settings if no EEPROM is detected */
1213 if (!(buf & E2P_CMD_LOADED)) {
1214 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1216 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1220 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1221 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1223 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1225 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1230 ret = smsc75xx_write_reg(dev, FLOW, 0);
1232 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1236 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1238 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1242 /* Don't need rfe_ctl_lock during initialisation */
1243 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1245 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1249 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1251 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1253 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1257 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1259 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1263 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1266 /* Enable or disable checksum offload engines */
1267 smsc75xx_set_features(dev->net, dev->net->features);
1269 smsc75xx_set_multicast(dev->net);
1271 ret = smsc75xx_phy_initialize(dev);
1273 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1277 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1279 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1283 /* enable PHY interrupts */
1284 buf |= INT_ENP_PHY_INT;
1286 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1288 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1292 /* allow mac to detect speed and duplex from phy */
1293 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1295 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1299 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1300 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1302 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1306 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1308 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1314 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1316 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1320 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1322 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1324 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1328 buf |= FCT_TX_CTL_EN;
1330 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1332 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1336 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1338 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1340 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1344 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1346 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1352 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1354 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1358 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1360 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1362 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1366 buf |= FCT_RX_CTL_EN;
1368 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1370 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1374 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1376 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1380 static const struct net_device_ops smsc75xx_netdev_ops = {
1381 .ndo_open = usbnet_open,
1382 .ndo_stop = usbnet_stop,
1383 .ndo_start_xmit = usbnet_start_xmit,
1384 .ndo_tx_timeout = usbnet_tx_timeout,
1385 .ndo_change_mtu = smsc75xx_change_mtu,
1386 .ndo_set_mac_address = eth_mac_addr,
1387 .ndo_validate_addr = eth_validate_addr,
1388 .ndo_do_ioctl = smsc75xx_ioctl,
1389 .ndo_set_rx_mode = smsc75xx_set_multicast,
1390 .ndo_set_features = smsc75xx_set_features,
1393 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1395 struct smsc75xx_priv *pdata = NULL;
1398 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1400 ret = usbnet_get_endpoints(dev, intf);
1402 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1406 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1409 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1415 spin_lock_init(&pdata->rfe_ctl_lock);
1416 mutex_init(&pdata->dataport_mutex);
1418 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1420 if (DEFAULT_TX_CSUM_ENABLE)
1421 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1423 if (DEFAULT_RX_CSUM_ENABLE)
1424 dev->net->features |= NETIF_F_RXCSUM;
1426 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1429 ret = smsc75xx_wait_ready(dev, 0);
1431 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1435 smsc75xx_init_mac_address(dev);
1437 /* Init all registers */
1438 ret = smsc75xx_reset(dev);
1440 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1444 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1445 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1446 dev->net->flags |= IFF_MULTICAST;
1447 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1448 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1452 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1454 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1456 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1463 static u16 smsc_crc(const u8 *buffer, size_t len)
1465 return bitrev16(crc16(0xFFFF, buffer, len));
1468 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1471 int cfg_base = WUF_CFGX + filter * 4;
1472 int mask_base = WUF_MASKX + filter * 16;
1475 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1477 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1481 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1483 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1487 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1489 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1493 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1495 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1499 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1501 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1508 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1510 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1514 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1516 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1520 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1521 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1523 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1525 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1529 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1534 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1536 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1540 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1542 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1546 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1547 val |= PMT_CTL_SUS_MODE_1;
1549 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1551 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1555 /* clear wol status, enable energy detection */
1556 val &= ~PMT_CTL_WUPS;
1557 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1559 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1561 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1565 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1570 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1572 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1576 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1578 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1582 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1583 val |= PMT_CTL_SUS_MODE_2;
1585 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1587 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1591 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1596 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1598 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1602 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1604 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1608 if (val & FCT_RX_CTL_RXUSED) {
1609 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1613 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1615 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1619 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1620 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1622 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1624 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1628 /* clear wol status */
1629 val &= ~PMT_CTL_WUPS;
1630 val |= PMT_CTL_WUPS_WOL;
1632 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1634 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1638 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1643 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1645 struct mii_if_info *mii = &dev->mii;
1648 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1651 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1653 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1657 /* enable interrupt source */
1658 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1660 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1666 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1671 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1673 struct mii_if_info *mii = &dev->mii;
1676 /* first, a dummy read, needed to latch some MII phys */
1677 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1679 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1683 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1685 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1689 return !!(ret & BMSR_LSTATUS);
1692 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1696 if (!netif_running(dev->net)) {
1697 /* interface is ifconfig down so fully power down hw */
1698 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1699 return smsc75xx_enter_suspend2(dev);
1703 /* link is down so enter EDPD mode */
1704 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1706 /* enable PHY wakeup events for if cable is attached */
1707 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1708 PHY_INT_MASK_ANEG_COMP);
1710 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1714 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1715 return smsc75xx_enter_suspend1(dev);
1718 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1719 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1720 PHY_INT_MASK_LINK_DOWN);
1722 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1726 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1727 return smsc75xx_enter_suspend3(dev);
1730 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1732 struct usbnet *dev = usb_get_intfdata(intf);
1733 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1737 ret = usbnet_suspend(intf, message);
1739 netdev_warn(dev->net, "usbnet_suspend error\n");
1743 if (pdata->suspend_flags) {
1744 netdev_warn(dev->net, "error during last resume\n");
1745 pdata->suspend_flags = 0;
1748 /* determine if link is up using only _nopm functions */
1749 link_up = smsc75xx_link_ok_nopm(dev);
1751 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1752 ret = smsc75xx_autosuspend(dev, link_up);
1756 /* if we get this far we're not autosuspending */
1757 /* if no wol options set, or if link is down and we're not waking on
1758 * PHY activity, enter lowest power SUSPEND2 mode
1760 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1761 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1762 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1764 /* disable energy detect (link up) & wake up events */
1765 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1767 netdev_warn(dev->net, "Error reading WUCSR\n");
1771 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1773 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1775 netdev_warn(dev->net, "Error writing WUCSR\n");
1779 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1781 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1785 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1787 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1789 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1793 ret = smsc75xx_enter_suspend2(dev);
1797 if (pdata->wolopts & WAKE_PHY) {
1798 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1799 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1801 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1805 /* if link is down then configure EDPD and enter SUSPEND1,
1806 * otherwise enter SUSPEND0 below
1809 struct mii_if_info *mii = &dev->mii;
1810 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1812 /* enable energy detect power-down mode */
1813 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1816 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1820 ret |= MODE_CTRL_STS_EDPWRDOWN;
1822 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1823 PHY_MODE_CTRL_STS, ret);
1825 /* enter SUSPEND1 mode */
1826 ret = smsc75xx_enter_suspend1(dev);
1831 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1834 /* disable all filters */
1835 for (i = 0; i < WUF_NUM; i++) {
1836 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1838 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1843 if (pdata->wolopts & WAKE_MCAST) {
1844 const u8 mcast[] = {0x01, 0x00, 0x5E};
1845 netdev_info(dev->net, "enabling multicast detection\n");
1847 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1848 | smsc_crc(mcast, 3);
1849 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1851 netdev_warn(dev->net, "Error writing wakeup filter\n");
1856 if (pdata->wolopts & WAKE_ARP) {
1857 const u8 arp[] = {0x08, 0x06};
1858 netdev_info(dev->net, "enabling ARP detection\n");
1860 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1862 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1864 netdev_warn(dev->net, "Error writing wakeup filter\n");
1869 /* clear any pending pattern match packet status */
1870 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1872 netdev_warn(dev->net, "Error reading WUCSR\n");
1878 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1880 netdev_warn(dev->net, "Error writing WUCSR\n");
1884 netdev_info(dev->net, "enabling packet match detection\n");
1885 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1887 netdev_warn(dev->net, "Error reading WUCSR\n");
1893 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1895 netdev_warn(dev->net, "Error writing WUCSR\n");
1899 netdev_info(dev->net, "disabling packet match detection\n");
1900 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1902 netdev_warn(dev->net, "Error reading WUCSR\n");
1908 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1910 netdev_warn(dev->net, "Error writing WUCSR\n");
1915 /* disable magic, bcast & unicast wakeup sources */
1916 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1918 netdev_warn(dev->net, "Error reading WUCSR\n");
1922 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1924 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1926 netdev_warn(dev->net, "Error writing WUCSR\n");
1930 if (pdata->wolopts & WAKE_PHY) {
1931 netdev_info(dev->net, "enabling PHY wakeup\n");
1933 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1935 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1939 /* clear wol status, enable energy detection */
1940 val &= ~PMT_CTL_WUPS;
1941 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1943 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1945 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1950 if (pdata->wolopts & WAKE_MAGIC) {
1951 netdev_info(dev->net, "enabling magic packet wakeup\n");
1952 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1954 netdev_warn(dev->net, "Error reading WUCSR\n");
1958 /* clear any pending magic packet status */
1959 val |= WUCSR_MPR | WUCSR_MPEN;
1961 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1963 netdev_warn(dev->net, "Error writing WUCSR\n");
1968 if (pdata->wolopts & WAKE_BCAST) {
1969 netdev_info(dev->net, "enabling broadcast detection\n");
1970 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1972 netdev_warn(dev->net, "Error reading WUCSR\n");
1976 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
1978 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1980 netdev_warn(dev->net, "Error writing WUCSR\n");
1985 if (pdata->wolopts & WAKE_UCAST) {
1986 netdev_info(dev->net, "enabling unicast detection\n");
1987 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1989 netdev_warn(dev->net, "Error reading WUCSR\n");
1993 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
1995 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1997 netdev_warn(dev->net, "Error writing WUCSR\n");
2002 /* enable receiver to enable frame reception */
2003 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2005 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2011 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2013 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2017 /* some wol options are enabled, so enter SUSPEND0 */
2018 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2019 ret = smsc75xx_enter_suspend0(dev);
2023 * TODO: resume() might need to handle the suspend failure
2026 if (ret && PMSG_IS_AUTO(message))
2027 usbnet_resume(intf);
2031 static int smsc75xx_resume(struct usb_interface *intf)
2033 struct usbnet *dev = usb_get_intfdata(intf);
2034 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2035 u8 suspend_flags = pdata->suspend_flags;
2039 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2041 /* do this first to ensure it's cleared even in error case */
2042 pdata->suspend_flags = 0;
2044 if (suspend_flags & SUSPEND_ALLMODES) {
2045 /* Disable wakeup sources */
2046 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2048 netdev_warn(dev->net, "Error reading WUCSR\n");
2052 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2055 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2057 netdev_warn(dev->net, "Error writing WUCSR\n");
2061 /* clear wake-up status */
2062 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2064 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2068 val &= ~PMT_CTL_WOL_EN;
2069 val |= PMT_CTL_WUPS;
2071 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2073 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2078 if (suspend_flags & SUSPEND_SUSPEND2) {
2079 netdev_info(dev->net, "resuming from SUSPEND2\n");
2081 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2083 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2087 val |= PMT_CTL_PHY_PWRUP;
2089 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2091 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2096 ret = smsc75xx_wait_ready(dev, 1);
2098 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2102 return usbnet_resume(intf);
2105 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2106 u32 rx_cmd_a, u32 rx_cmd_b)
2108 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2109 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2110 skb->ip_summed = CHECKSUM_NONE;
2112 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2113 skb->ip_summed = CHECKSUM_COMPLETE;
2117 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2119 /* This check is no longer done by usbnet */
2120 if (skb->len < dev->net->hard_header_len)
2123 while (skb->len > 0) {
2124 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2125 struct sk_buff *ax_skb;
2126 unsigned char *packet;
2128 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2129 le32_to_cpus(&rx_cmd_a);
2132 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2133 le32_to_cpus(&rx_cmd_b);
2134 skb_pull(skb, 4 + RXW_PADDING);
2138 /* get the packet length */
2139 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2140 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2142 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2143 netif_dbg(dev, rx_err, dev->net,
2144 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2145 dev->net->stats.rx_errors++;
2146 dev->net->stats.rx_dropped++;
2148 if (rx_cmd_a & RX_CMD_A_FCS)
2149 dev->net->stats.rx_crc_errors++;
2150 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2151 dev->net->stats.rx_frame_errors++;
2153 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2154 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2155 netif_dbg(dev, rx_err, dev->net,
2156 "size err rx_cmd_a=0x%08x\n",
2161 /* last frame in this batch */
2162 if (skb->len == size) {
2163 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2166 skb_trim(skb, skb->len - 4); /* remove fcs */
2167 skb->truesize = size + sizeof(struct sk_buff);
2172 ax_skb = skb_clone(skb, GFP_ATOMIC);
2173 if (unlikely(!ax_skb)) {
2174 netdev_warn(dev->net, "Error allocating skb\n");
2179 ax_skb->data = packet;
2180 skb_set_tail_pointer(ax_skb, size);
2182 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2185 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2186 ax_skb->truesize = size + sizeof(struct sk_buff);
2188 usbnet_skb_return(dev, ax_skb);
2191 skb_pull(skb, size);
2193 /* padding bytes before the next frame starts */
2195 skb_pull(skb, align_count);
2201 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2202 struct sk_buff *skb, gfp_t flags)
2204 u32 tx_cmd_a, tx_cmd_b;
2206 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) {
2207 struct sk_buff *skb2 =
2208 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags);
2209 dev_kfree_skb_any(skb);
2215 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2217 if (skb->ip_summed == CHECKSUM_PARTIAL)
2218 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2220 if (skb_is_gso(skb)) {
2221 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2222 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2224 tx_cmd_a |= TX_CMD_A_LSO;
2230 cpu_to_le32s(&tx_cmd_b);
2231 memcpy(skb->data, &tx_cmd_b, 4);
2234 cpu_to_le32s(&tx_cmd_a);
2235 memcpy(skb->data, &tx_cmd_a, 4);
2240 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2242 dev->intf->needs_remote_wakeup = on;
2246 static const struct driver_info smsc75xx_info = {
2247 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2248 .bind = smsc75xx_bind,
2249 .unbind = smsc75xx_unbind,
2250 .link_reset = smsc75xx_link_reset,
2251 .reset = smsc75xx_reset,
2252 .rx_fixup = smsc75xx_rx_fixup,
2253 .tx_fixup = smsc75xx_tx_fixup,
2254 .status = smsc75xx_status,
2255 .manage_power = smsc75xx_manage_power,
2256 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2259 static const struct usb_device_id products[] = {
2261 /* SMSC7500 USB Gigabit Ethernet Device */
2262 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2263 .driver_info = (unsigned long) &smsc75xx_info,
2266 /* SMSC7500 USB Gigabit Ethernet Device */
2267 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2268 .driver_info = (unsigned long) &smsc75xx_info,
2272 MODULE_DEVICE_TABLE(usb, products);
2274 static struct usb_driver smsc75xx_driver = {
2275 .name = SMSC_CHIPNAME,
2276 .id_table = products,
2277 .probe = usbnet_probe,
2278 .suspend = smsc75xx_suspend,
2279 .resume = smsc75xx_resume,
2280 .reset_resume = smsc75xx_resume,
2281 .disconnect = usbnet_disconnect,
2282 .disable_hub_initiated_lpm = 1,
2283 .supports_autosuspend = 1,
2286 module_usb_driver(smsc75xx_driver);
2288 MODULE_AUTHOR("Nancy Lin");
2289 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2290 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2291 MODULE_LICENSE("GPL");