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, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/kmod.h>
23 #include <linux/init.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/mii.h>
28 #include <linux/usb.h>
29 #include <linux/bitrev.h>
30 #include <linux/crc16.h>
31 #include <linux/crc32.h>
32 #include <linux/usb/usbnet.h>
33 #include <linux/slab.h>
36 #define SMSC_CHIPNAME "smsc75xx"
37 #define SMSC_DRIVER_VERSION "1.0.0"
38 #define HS_USB_PKT_SIZE (512)
39 #define FS_USB_PKT_SIZE (64)
40 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
41 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
42 #define DEFAULT_BULK_IN_DELAY (0x00002000)
43 #define MAX_SINGLE_PACKET_SIZE (9000)
44 #define LAN75XX_EEPROM_MAGIC (0x7500)
45 #define EEPROM_MAC_OFFSET (0x01)
46 #define DEFAULT_TX_CSUM_ENABLE (true)
47 #define DEFAULT_RX_CSUM_ENABLE (true)
48 #define SMSC75XX_INTERNAL_PHY_ID (1)
49 #define SMSC75XX_TX_OVERHEAD (8)
50 #define MAX_RX_FIFO_SIZE (20 * 1024)
51 #define MAX_TX_FIFO_SIZE (12 * 1024)
52 #define USB_VENDOR_ID_SMSC (0x0424)
53 #define USB_PRODUCT_ID_LAN7500 (0x7500)
54 #define USB_PRODUCT_ID_LAN7505 (0x7505)
56 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
57 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
59 #define SUSPEND_SUSPEND0 (0x01)
60 #define SUSPEND_SUSPEND1 (0x02)
61 #define SUSPEND_SUSPEND2 (0x04)
62 #define SUSPEND_SUSPEND3 (0x08)
63 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
64 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
66 struct smsc75xx_priv {
70 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN];
71 struct mutex dataport_mutex;
72 spinlock_t rfe_ctl_lock;
73 struct work_struct set_multicast;
78 struct usb_ctrlrequest req;
82 static bool turbo_mode = true;
83 module_param(turbo_mode, bool, 0644);
84 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
86 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
91 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
98 fn = usbnet_read_cmd_nopm;
100 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
101 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
103 if (unlikely(ret < 0))
104 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
113 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
118 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
123 fn = usbnet_write_cmd;
125 fn = usbnet_write_cmd_nopm;
130 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
131 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
133 if (unlikely(ret < 0))
134 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
140 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
143 return __smsc75xx_read_reg(dev, index, data, 1);
146 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
149 return __smsc75xx_write_reg(dev, index, data, 1);
152 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
155 return __smsc75xx_read_reg(dev, index, data, 0);
158 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
161 return __smsc75xx_write_reg(dev, index, data, 0);
164 /* Loop until the read is completed with timeout
165 * called with phy_mutex held */
166 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
169 unsigned long start_time = jiffies;
174 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
176 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
180 if (!(val & MII_ACCESS_BUSY))
182 } while (!time_after(jiffies, start_time + HZ));
187 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
190 struct usbnet *dev = netdev_priv(netdev);
194 mutex_lock(&dev->phy_mutex);
196 /* confirm MII not busy */
197 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
199 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
203 /* set the address, index & direction (read from PHY) */
204 phy_id &= dev->mii.phy_id_mask;
205 idx &= dev->mii.reg_num_mask;
206 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
207 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
208 | MII_ACCESS_READ | MII_ACCESS_BUSY;
209 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
211 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
215 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
217 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
221 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
223 netdev_warn(dev->net, "Error reading MII_DATA\n");
227 ret = (u16)(val & 0xFFFF);
230 mutex_unlock(&dev->phy_mutex);
234 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
235 int idx, int regval, int in_pm)
237 struct usbnet *dev = netdev_priv(netdev);
241 mutex_lock(&dev->phy_mutex);
243 /* confirm MII not busy */
244 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
246 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
251 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
253 netdev_warn(dev->net, "Error writing MII_DATA\n");
257 /* set the address, index & direction (write to PHY) */
258 phy_id &= dev->mii.phy_id_mask;
259 idx &= dev->mii.reg_num_mask;
260 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
261 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
262 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
263 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
265 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
269 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
271 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
276 mutex_unlock(&dev->phy_mutex);
279 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
282 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
285 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
288 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
291 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
293 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
296 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
299 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
302 static int smsc75xx_wait_eeprom(struct usbnet *dev)
304 unsigned long start_time = jiffies;
309 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
311 netdev_warn(dev->net, "Error reading E2P_CMD\n");
315 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
318 } while (!time_after(jiffies, start_time + HZ));
320 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
321 netdev_warn(dev->net, "EEPROM read operation timeout\n");
328 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
330 unsigned long start_time = jiffies;
335 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
337 netdev_warn(dev->net, "Error reading E2P_CMD\n");
341 if (!(val & E2P_CMD_BUSY))
345 } while (!time_after(jiffies, start_time + HZ));
347 netdev_warn(dev->net, "EEPROM is busy\n");
351 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
360 ret = smsc75xx_eeprom_confirm_not_busy(dev);
364 for (i = 0; i < length; i++) {
365 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
366 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
368 netdev_warn(dev->net, "Error writing E2P_CMD\n");
372 ret = smsc75xx_wait_eeprom(dev);
376 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
378 netdev_warn(dev->net, "Error reading E2P_DATA\n");
382 data[i] = val & 0xFF;
389 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
398 ret = smsc75xx_eeprom_confirm_not_busy(dev);
402 /* Issue write/erase enable command */
403 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
404 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
406 netdev_warn(dev->net, "Error writing E2P_CMD\n");
410 ret = smsc75xx_wait_eeprom(dev);
414 for (i = 0; i < length; i++) {
416 /* Fill data register */
418 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
420 netdev_warn(dev->net, "Error writing E2P_DATA\n");
424 /* Send "write" command */
425 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
426 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
428 netdev_warn(dev->net, "Error writing E2P_CMD\n");
432 ret = smsc75xx_wait_eeprom(dev);
442 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
446 for (i = 0; i < 100; i++) {
448 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
450 netdev_warn(dev->net, "Error reading DP_SEL\n");
454 if (dp_sel & DP_SEL_DPRDY)
460 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
465 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
466 u32 length, u32 *buf)
468 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
472 mutex_lock(&pdata->dataport_mutex);
474 ret = smsc75xx_dataport_wait_not_busy(dev);
476 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
480 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
482 netdev_warn(dev->net, "Error reading DP_SEL\n");
486 dp_sel &= ~DP_SEL_RSEL;
487 dp_sel |= ram_select;
488 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
490 netdev_warn(dev->net, "Error writing DP_SEL\n");
494 for (i = 0; i < length; i++) {
495 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
497 netdev_warn(dev->net, "Error writing DP_ADDR\n");
501 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
503 netdev_warn(dev->net, "Error writing DP_DATA\n");
507 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
509 netdev_warn(dev->net, "Error writing DP_CMD\n");
513 ret = smsc75xx_dataport_wait_not_busy(dev);
515 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
521 mutex_unlock(&pdata->dataport_mutex);
525 /* returns hash bit number for given MAC address */
526 static u32 smsc75xx_hash(char addr[ETH_ALEN])
528 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
531 static void smsc75xx_deferred_multicast_write(struct work_struct *param)
533 struct smsc75xx_priv *pdata =
534 container_of(param, struct smsc75xx_priv, set_multicast);
535 struct usbnet *dev = pdata->dev;
538 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
541 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
542 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
544 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
546 netdev_warn(dev->net, "Error writing RFE_CRL\n");
549 static void smsc75xx_set_multicast(struct net_device *netdev)
551 struct usbnet *dev = netdev_priv(netdev);
552 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
556 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
559 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
560 pdata->rfe_ctl |= RFE_CTL_AB;
562 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
563 pdata->multicast_hash_table[i] = 0;
565 if (dev->net->flags & IFF_PROMISC) {
566 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
567 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
568 } else if (dev->net->flags & IFF_ALLMULTI) {
569 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
570 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
571 } else if (!netdev_mc_empty(dev->net)) {
572 struct netdev_hw_addr *ha;
574 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
576 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
578 netdev_for_each_mc_addr(ha, netdev) {
579 u32 bitnum = smsc75xx_hash(ha->addr);
580 pdata->multicast_hash_table[bitnum / 32] |=
581 (1 << (bitnum % 32));
584 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
585 pdata->rfe_ctl |= RFE_CTL_DPF;
588 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
590 /* defer register writes to a sleepable context */
591 schedule_work(&pdata->set_multicast);
594 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
595 u16 lcladv, u16 rmtadv)
597 u32 flow = 0, fct_flow = 0;
600 if (duplex == DUPLEX_FULL) {
601 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
603 if (cap & FLOW_CTRL_TX) {
604 flow = (FLOW_TX_FCEN | 0xFFFF);
605 /* set fct_flow thresholds to 20% and 80% */
606 fct_flow = (8 << 8) | 32;
609 if (cap & FLOW_CTRL_RX)
610 flow |= FLOW_RX_FCEN;
612 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
613 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
614 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
616 netif_dbg(dev, link, dev->net, "half duplex\n");
619 ret = smsc75xx_write_reg(dev, FLOW, flow);
621 netdev_warn(dev->net, "Error writing FLOW\n");
625 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
627 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
634 static int smsc75xx_link_reset(struct usbnet *dev)
636 struct mii_if_info *mii = &dev->mii;
637 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
641 /* write to clear phy interrupt status */
642 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
643 PHY_INT_SRC_CLEAR_ALL);
645 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
647 netdev_warn(dev->net, "Error writing INT_STS\n");
651 mii_check_media(mii, 1, 1);
652 mii_ethtool_gset(&dev->mii, &ecmd);
653 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
654 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
656 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
657 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
659 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
662 static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
666 if (urb->actual_length != 4) {
667 netdev_warn(dev->net, "unexpected urb length %d\n",
672 memcpy(&intdata, urb->transfer_buffer, 4);
673 le32_to_cpus(&intdata);
675 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
677 if (intdata & INT_ENP_PHY_INT)
678 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
680 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
684 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
686 return MAX_EEPROM_SIZE;
689 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
690 struct ethtool_eeprom *ee, u8 *data)
692 struct usbnet *dev = netdev_priv(netdev);
694 ee->magic = LAN75XX_EEPROM_MAGIC;
696 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
699 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
700 struct ethtool_eeprom *ee, u8 *data)
702 struct usbnet *dev = netdev_priv(netdev);
704 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
705 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
710 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
713 static void smsc75xx_ethtool_get_wol(struct net_device *net,
714 struct ethtool_wolinfo *wolinfo)
716 struct usbnet *dev = netdev_priv(net);
717 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
719 wolinfo->supported = SUPPORTED_WAKE;
720 wolinfo->wolopts = pdata->wolopts;
723 static int smsc75xx_ethtool_set_wol(struct net_device *net,
724 struct ethtool_wolinfo *wolinfo)
726 struct usbnet *dev = netdev_priv(net);
727 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
730 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
732 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
734 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
739 static const struct ethtool_ops smsc75xx_ethtool_ops = {
740 .get_link = usbnet_get_link,
741 .nway_reset = usbnet_nway_reset,
742 .get_drvinfo = usbnet_get_drvinfo,
743 .get_msglevel = usbnet_get_msglevel,
744 .set_msglevel = usbnet_set_msglevel,
745 .get_settings = usbnet_get_settings,
746 .set_settings = usbnet_set_settings,
747 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
748 .get_eeprom = smsc75xx_ethtool_get_eeprom,
749 .set_eeprom = smsc75xx_ethtool_set_eeprom,
750 .get_wol = smsc75xx_ethtool_get_wol,
751 .set_wol = smsc75xx_ethtool_set_wol,
754 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
756 struct usbnet *dev = netdev_priv(netdev);
758 if (!netif_running(netdev))
761 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
764 static void smsc75xx_init_mac_address(struct usbnet *dev)
766 /* try reading mac address from EEPROM */
767 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
768 dev->net->dev_addr) == 0) {
769 if (is_valid_ether_addr(dev->net->dev_addr)) {
770 /* eeprom values are valid so use them */
771 netif_dbg(dev, ifup, dev->net,
772 "MAC address read from EEPROM\n");
777 /* no eeprom, or eeprom values are invalid. generate random MAC */
778 eth_hw_addr_random(dev->net);
779 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
782 static int smsc75xx_set_mac_address(struct usbnet *dev)
784 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
785 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
786 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
788 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
790 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
794 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
796 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
800 addr_hi |= ADDR_FILTX_FB_VALID;
801 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
803 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
807 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
809 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
814 static int smsc75xx_phy_initialize(struct usbnet *dev)
816 int bmcr, ret, timeout = 0;
818 /* Initialize MII structure */
819 dev->mii.dev = dev->net;
820 dev->mii.mdio_read = smsc75xx_mdio_read;
821 dev->mii.mdio_write = smsc75xx_mdio_write;
822 dev->mii.phy_id_mask = 0x1f;
823 dev->mii.reg_num_mask = 0x1f;
824 dev->mii.supports_gmii = 1;
825 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
827 /* reset phy and wait for reset to complete */
828 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
832 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
834 netdev_warn(dev->net, "Error reading MII_BMCR\n");
838 } while ((bmcr & BMCR_RESET) && (timeout < 100));
840 if (timeout >= 100) {
841 netdev_warn(dev->net, "timeout on PHY Reset\n");
845 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
846 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
847 ADVERTISE_PAUSE_ASYM);
848 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
851 /* read and write to clear phy interrupt status */
852 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
854 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
858 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
860 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
861 PHY_INT_MASK_DEFAULT);
862 mii_nway_restart(&dev->mii);
864 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
868 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
874 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
876 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
880 rxenabled = ((buf & MAC_RX_RXEN) != 0);
884 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
886 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
891 /* add 4 to size for FCS */
892 buf &= ~MAC_RX_MAX_SIZE;
893 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
895 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
897 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
903 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
905 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
913 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
915 struct usbnet *dev = netdev_priv(netdev);
918 if (new_mtu > MAX_SINGLE_PACKET_SIZE)
921 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
923 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
927 return usbnet_change_mtu(netdev, new_mtu);
930 /* Enable or disable Rx checksum offload engine */
931 static int smsc75xx_set_features(struct net_device *netdev,
932 netdev_features_t features)
934 struct usbnet *dev = netdev_priv(netdev);
935 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
939 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
941 if (features & NETIF_F_RXCSUM)
942 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
944 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
946 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
947 /* it's racing here! */
949 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
951 netdev_warn(dev->net, "Error writing RFE_CTL\n");
956 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
964 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
967 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
971 if (buf & PMT_CTL_DEV_RDY)
976 } while (timeout < 100);
978 netdev_warn(dev->net, "timeout waiting for device ready\n");
982 static int smsc75xx_reset(struct usbnet *dev)
984 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
986 int ret = 0, timeout;
988 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
990 ret = smsc75xx_wait_ready(dev, 0);
992 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
996 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
998 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1004 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1006 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1013 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1015 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1019 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1021 if (timeout >= 100) {
1022 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1026 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1028 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1030 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1034 buf |= PMT_CTL_PHY_RST;
1036 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1038 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1045 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1047 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1051 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1053 if (timeout >= 100) {
1054 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1058 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1060 ret = smsc75xx_set_mac_address(dev);
1062 netdev_warn(dev->net, "Failed to set mac address\n");
1066 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1067 dev->net->dev_addr);
1069 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1071 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1075 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1080 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1082 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1086 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1088 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1092 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1097 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1098 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1099 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1100 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1102 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1103 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1106 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1107 (ulong)dev->rx_urb_size);
1109 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1111 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1115 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1117 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1121 netif_dbg(dev, ifup, dev->net,
1122 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1124 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1126 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1130 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1132 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1136 netif_dbg(dev, ifup, dev->net,
1137 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1140 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1142 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1146 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1148 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1150 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1152 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1156 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1158 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1162 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1165 /* set FIFO sizes */
1166 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1167 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1169 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1173 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1175 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1176 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1178 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1182 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1184 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1186 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1190 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1192 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1196 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1198 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1200 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1204 /* only set default GPIO/LED settings if no EEPROM is detected */
1205 if (!(buf & E2P_CMD_LOADED)) {
1206 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1208 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1212 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1213 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1215 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1217 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1222 ret = smsc75xx_write_reg(dev, FLOW, 0);
1224 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1228 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1230 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1234 /* Don't need rfe_ctl_lock during initialisation */
1235 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1237 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1241 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1243 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1245 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1249 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1251 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1255 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1258 /* Enable or disable checksum offload engines */
1259 smsc75xx_set_features(dev->net, dev->net->features);
1261 smsc75xx_set_multicast(dev->net);
1263 ret = smsc75xx_phy_initialize(dev);
1265 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1269 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1271 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1275 /* enable PHY interrupts */
1276 buf |= INT_ENP_PHY_INT;
1278 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1280 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1284 /* allow mac to detect speed and duplex from phy */
1285 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1287 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1291 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1292 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1294 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1298 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1300 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1306 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1308 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1312 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1314 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1316 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1320 buf |= FCT_TX_CTL_EN;
1322 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1324 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1328 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1330 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1332 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1336 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1338 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1344 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1346 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1350 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1352 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1354 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1358 buf |= FCT_RX_CTL_EN;
1360 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1362 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1366 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1368 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1372 static const struct net_device_ops smsc75xx_netdev_ops = {
1373 .ndo_open = usbnet_open,
1374 .ndo_stop = usbnet_stop,
1375 .ndo_start_xmit = usbnet_start_xmit,
1376 .ndo_tx_timeout = usbnet_tx_timeout,
1377 .ndo_change_mtu = smsc75xx_change_mtu,
1378 .ndo_set_mac_address = eth_mac_addr,
1379 .ndo_validate_addr = eth_validate_addr,
1380 .ndo_do_ioctl = smsc75xx_ioctl,
1381 .ndo_set_rx_mode = smsc75xx_set_multicast,
1382 .ndo_set_features = smsc75xx_set_features,
1385 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1387 struct smsc75xx_priv *pdata = NULL;
1390 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1392 ret = usbnet_get_endpoints(dev, intf);
1394 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1398 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1401 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1407 spin_lock_init(&pdata->rfe_ctl_lock);
1408 mutex_init(&pdata->dataport_mutex);
1410 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1412 if (DEFAULT_TX_CSUM_ENABLE)
1413 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1415 if (DEFAULT_RX_CSUM_ENABLE)
1416 dev->net->features |= NETIF_F_RXCSUM;
1418 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1421 ret = smsc75xx_wait_ready(dev, 0);
1423 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1427 smsc75xx_init_mac_address(dev);
1429 /* Init all registers */
1430 ret = smsc75xx_reset(dev);
1432 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1436 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1437 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1438 dev->net->flags |= IFF_MULTICAST;
1439 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1440 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1444 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1446 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1448 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1455 static u16 smsc_crc(const u8 *buffer, size_t len)
1457 return bitrev16(crc16(0xFFFF, buffer, len));
1460 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1463 int cfg_base = WUF_CFGX + filter * 4;
1464 int mask_base = WUF_MASKX + filter * 16;
1467 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1469 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1473 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1475 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1479 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1481 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1485 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1487 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1491 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1493 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1500 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1502 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1506 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1508 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1512 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1513 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1515 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1517 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1521 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1526 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1528 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1532 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1534 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1538 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1539 val |= PMT_CTL_SUS_MODE_1;
1541 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1543 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1547 /* clear wol status, enable energy detection */
1548 val &= ~PMT_CTL_WUPS;
1549 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1551 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1553 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1557 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1562 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1564 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1568 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1570 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1574 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1575 val |= PMT_CTL_SUS_MODE_2;
1577 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1579 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1583 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1588 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1590 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1594 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1596 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1600 if (val & FCT_RX_CTL_RXUSED) {
1601 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1605 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1607 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1611 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1612 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1614 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1616 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1620 /* clear wol status */
1621 val &= ~PMT_CTL_WUPS;
1622 val |= PMT_CTL_WUPS_WOL;
1624 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1626 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1630 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1635 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1637 struct mii_if_info *mii = &dev->mii;
1640 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1643 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1645 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1649 /* enable interrupt source */
1650 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1652 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1658 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1663 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1665 struct mii_if_info *mii = &dev->mii;
1668 /* first, a dummy read, needed to latch some MII phys */
1669 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1671 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1675 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1677 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1681 return !!(ret & BMSR_LSTATUS);
1684 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1688 if (!netif_running(dev->net)) {
1689 /* interface is ifconfig down so fully power down hw */
1690 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1691 return smsc75xx_enter_suspend2(dev);
1695 /* link is down so enter EDPD mode */
1696 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1698 /* enable PHY wakeup events for if cable is attached */
1699 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1700 PHY_INT_MASK_ANEG_COMP);
1702 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1706 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1707 return smsc75xx_enter_suspend1(dev);
1710 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1711 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1712 PHY_INT_MASK_LINK_DOWN);
1714 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1718 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1719 return smsc75xx_enter_suspend3(dev);
1722 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1724 struct usbnet *dev = usb_get_intfdata(intf);
1725 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1729 ret = usbnet_suspend(intf, message);
1731 netdev_warn(dev->net, "usbnet_suspend error\n");
1735 if (pdata->suspend_flags) {
1736 netdev_warn(dev->net, "error during last resume\n");
1737 pdata->suspend_flags = 0;
1740 /* determine if link is up using only _nopm functions */
1741 link_up = smsc75xx_link_ok_nopm(dev);
1743 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1744 ret = smsc75xx_autosuspend(dev, link_up);
1748 /* if we get this far we're not autosuspending */
1749 /* if no wol options set, or if link is down and we're not waking on
1750 * PHY activity, enter lowest power SUSPEND2 mode
1752 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1753 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1754 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1756 /* disable energy detect (link up) & wake up events */
1757 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1759 netdev_warn(dev->net, "Error reading WUCSR\n");
1763 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1765 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1767 netdev_warn(dev->net, "Error writing WUCSR\n");
1771 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1773 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1777 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1779 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1781 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1785 ret = smsc75xx_enter_suspend2(dev);
1789 if (pdata->wolopts & WAKE_PHY) {
1790 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1791 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1793 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1797 /* if link is down then configure EDPD and enter SUSPEND1,
1798 * otherwise enter SUSPEND0 below
1801 struct mii_if_info *mii = &dev->mii;
1802 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1804 /* enable energy detect power-down mode */
1805 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1808 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1812 ret |= MODE_CTRL_STS_EDPWRDOWN;
1814 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1815 PHY_MODE_CTRL_STS, ret);
1817 /* enter SUSPEND1 mode */
1818 ret = smsc75xx_enter_suspend1(dev);
1823 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1826 /* disable all filters */
1827 for (i = 0; i < WUF_NUM; i++) {
1828 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1830 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1835 if (pdata->wolopts & WAKE_MCAST) {
1836 const u8 mcast[] = {0x01, 0x00, 0x5E};
1837 netdev_info(dev->net, "enabling multicast detection\n");
1839 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1840 | smsc_crc(mcast, 3);
1841 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1843 netdev_warn(dev->net, "Error writing wakeup filter\n");
1848 if (pdata->wolopts & WAKE_ARP) {
1849 const u8 arp[] = {0x08, 0x06};
1850 netdev_info(dev->net, "enabling ARP detection\n");
1852 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1854 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1856 netdev_warn(dev->net, "Error writing wakeup filter\n");
1861 /* clear any pending pattern match packet status */
1862 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1864 netdev_warn(dev->net, "Error reading WUCSR\n");
1870 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1872 netdev_warn(dev->net, "Error writing WUCSR\n");
1876 netdev_info(dev->net, "enabling packet match detection\n");
1877 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1879 netdev_warn(dev->net, "Error reading WUCSR\n");
1885 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1887 netdev_warn(dev->net, "Error writing WUCSR\n");
1891 netdev_info(dev->net, "disabling packet match detection\n");
1892 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1894 netdev_warn(dev->net, "Error reading WUCSR\n");
1900 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1902 netdev_warn(dev->net, "Error writing WUCSR\n");
1907 /* disable magic, bcast & unicast wakeup sources */
1908 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1910 netdev_warn(dev->net, "Error reading WUCSR\n");
1914 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1916 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1918 netdev_warn(dev->net, "Error writing WUCSR\n");
1922 if (pdata->wolopts & WAKE_PHY) {
1923 netdev_info(dev->net, "enabling PHY wakeup\n");
1925 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1927 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1931 /* clear wol status, enable energy detection */
1932 val &= ~PMT_CTL_WUPS;
1933 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1935 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1937 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1942 if (pdata->wolopts & WAKE_MAGIC) {
1943 netdev_info(dev->net, "enabling magic packet wakeup\n");
1944 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1946 netdev_warn(dev->net, "Error reading WUCSR\n");
1950 /* clear any pending magic packet status */
1951 val |= WUCSR_MPR | WUCSR_MPEN;
1953 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1955 netdev_warn(dev->net, "Error writing WUCSR\n");
1960 if (pdata->wolopts & WAKE_BCAST) {
1961 netdev_info(dev->net, "enabling broadcast detection\n");
1962 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1964 netdev_warn(dev->net, "Error reading WUCSR\n");
1968 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
1970 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1972 netdev_warn(dev->net, "Error writing WUCSR\n");
1977 if (pdata->wolopts & WAKE_UCAST) {
1978 netdev_info(dev->net, "enabling unicast detection\n");
1979 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1981 netdev_warn(dev->net, "Error reading WUCSR\n");
1985 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
1987 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1989 netdev_warn(dev->net, "Error writing WUCSR\n");
1994 /* enable receiver to enable frame reception */
1995 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
1997 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2003 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2005 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2009 /* some wol options are enabled, so enter SUSPEND0 */
2010 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2011 ret = smsc75xx_enter_suspend0(dev);
2015 * TODO: resume() might need to handle the suspend failure
2018 if (ret && PMSG_IS_AUTO(message))
2019 usbnet_resume(intf);
2023 static int smsc75xx_resume(struct usb_interface *intf)
2025 struct usbnet *dev = usb_get_intfdata(intf);
2026 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2027 u8 suspend_flags = pdata->suspend_flags;
2031 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2033 /* do this first to ensure it's cleared even in error case */
2034 pdata->suspend_flags = 0;
2036 if (suspend_flags & SUSPEND_ALLMODES) {
2037 /* Disable wakeup sources */
2038 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2040 netdev_warn(dev->net, "Error reading WUCSR\n");
2044 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2047 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2049 netdev_warn(dev->net, "Error writing WUCSR\n");
2053 /* clear wake-up status */
2054 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2056 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2060 val &= ~PMT_CTL_WOL_EN;
2061 val |= PMT_CTL_WUPS;
2063 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2065 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2070 if (suspend_flags & SUSPEND_SUSPEND2) {
2071 netdev_info(dev->net, "resuming from SUSPEND2\n");
2073 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2075 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2079 val |= PMT_CTL_PHY_PWRUP;
2081 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2083 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2088 ret = smsc75xx_wait_ready(dev, 1);
2090 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2094 return usbnet_resume(intf);
2097 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2098 u32 rx_cmd_a, u32 rx_cmd_b)
2100 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2101 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2102 skb->ip_summed = CHECKSUM_NONE;
2104 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2105 skb->ip_summed = CHECKSUM_COMPLETE;
2109 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2111 while (skb->len > 0) {
2112 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2113 struct sk_buff *ax_skb;
2114 unsigned char *packet;
2116 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2117 le32_to_cpus(&rx_cmd_a);
2120 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2121 le32_to_cpus(&rx_cmd_b);
2122 skb_pull(skb, 4 + RXW_PADDING);
2126 /* get the packet length */
2127 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2128 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2130 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2131 netif_dbg(dev, rx_err, dev->net,
2132 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2133 dev->net->stats.rx_errors++;
2134 dev->net->stats.rx_dropped++;
2136 if (rx_cmd_a & RX_CMD_A_FCS)
2137 dev->net->stats.rx_crc_errors++;
2138 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2139 dev->net->stats.rx_frame_errors++;
2141 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2142 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2143 netif_dbg(dev, rx_err, dev->net,
2144 "size err rx_cmd_a=0x%08x\n",
2149 /* last frame in this batch */
2150 if (skb->len == size) {
2151 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2154 skb_trim(skb, skb->len - 4); /* remove fcs */
2155 skb->truesize = size + sizeof(struct sk_buff);
2160 ax_skb = skb_clone(skb, GFP_ATOMIC);
2161 if (unlikely(!ax_skb)) {
2162 netdev_warn(dev->net, "Error allocating skb\n");
2167 ax_skb->data = packet;
2168 skb_set_tail_pointer(ax_skb, size);
2170 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2173 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
2174 ax_skb->truesize = size + sizeof(struct sk_buff);
2176 usbnet_skb_return(dev, ax_skb);
2179 skb_pull(skb, size);
2181 /* padding bytes before the next frame starts */
2183 skb_pull(skb, align_count);
2186 if (unlikely(skb->len < 0)) {
2187 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
2194 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2195 struct sk_buff *skb, gfp_t flags)
2197 u32 tx_cmd_a, tx_cmd_b;
2199 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) {
2200 struct sk_buff *skb2 =
2201 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags);
2202 dev_kfree_skb_any(skb);
2208 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2210 if (skb->ip_summed == CHECKSUM_PARTIAL)
2211 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2213 if (skb_is_gso(skb)) {
2214 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2215 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2217 tx_cmd_a |= TX_CMD_A_LSO;
2223 cpu_to_le32s(&tx_cmd_b);
2224 memcpy(skb->data, &tx_cmd_b, 4);
2227 cpu_to_le32s(&tx_cmd_a);
2228 memcpy(skb->data, &tx_cmd_a, 4);
2233 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2235 dev->intf->needs_remote_wakeup = on;
2239 static const struct driver_info smsc75xx_info = {
2240 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2241 .bind = smsc75xx_bind,
2242 .unbind = smsc75xx_unbind,
2243 .link_reset = smsc75xx_link_reset,
2244 .reset = smsc75xx_reset,
2245 .rx_fixup = smsc75xx_rx_fixup,
2246 .tx_fixup = smsc75xx_tx_fixup,
2247 .status = smsc75xx_status,
2248 .manage_power = smsc75xx_manage_power,
2249 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2252 static const struct usb_device_id products[] = {
2254 /* SMSC7500 USB Gigabit Ethernet Device */
2255 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2256 .driver_info = (unsigned long) &smsc75xx_info,
2259 /* SMSC7500 USB Gigabit Ethernet Device */
2260 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2261 .driver_info = (unsigned long) &smsc75xx_info,
2265 MODULE_DEVICE_TABLE(usb, products);
2267 static struct usb_driver smsc75xx_driver = {
2268 .name = SMSC_CHIPNAME,
2269 .id_table = products,
2270 .probe = usbnet_probe,
2271 .suspend = smsc75xx_suspend,
2272 .resume = smsc75xx_resume,
2273 .reset_resume = smsc75xx_resume,
2274 .disconnect = usbnet_disconnect,
2275 .disable_hub_initiated_lpm = 1,
2276 .supports_autosuspend = 1,
2279 module_usb_driver(smsc75xx_driver);
2281 MODULE_AUTHOR("Nancy Lin");
2282 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2283 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2284 MODULE_LICENSE("GPL");