1 /***************************************************************************
3 * Copyright (C) 2007-2008 SMSC
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *****************************************************************************/
20 #include <linux/module.h>
21 #include <linux/kmod.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24 #include <linux/ethtool.h>
25 #include <linux/mii.h>
26 #include <linux/usb.h>
27 #include <linux/bitrev.h>
28 #include <linux/crc16.h>
29 #include <linux/crc32.h>
30 #include <linux/usb/usbnet.h>
31 #include <linux/slab.h>
32 #include <linux/of_net.h>
35 #define SMSC_CHIPNAME "smsc95xx"
36 #define SMSC_DRIVER_VERSION "1.0.4"
37 #define HS_USB_PKT_SIZE (512)
38 #define FS_USB_PKT_SIZE (64)
39 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
40 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
41 #define DEFAULT_BULK_IN_DELAY (0x00002000)
42 #define MAX_SINGLE_PACKET_SIZE (2048)
43 #define LAN95XX_EEPROM_MAGIC (0x9500)
44 #define EEPROM_MAC_OFFSET (0x01)
45 #define DEFAULT_TX_CSUM_ENABLE (true)
46 #define DEFAULT_RX_CSUM_ENABLE (true)
47 #define SMSC95XX_INTERNAL_PHY_ID (1)
48 #define SMSC95XX_TX_OVERHEAD (8)
49 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
50 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
51 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
53 #define FEATURE_8_WAKEUP_FILTERS (0x01)
54 #define FEATURE_PHY_NLP_CROSSOVER (0x02)
55 #define FEATURE_REMOTE_WAKEUP (0x04)
57 #define SUSPEND_SUSPEND0 (0x01)
58 #define SUSPEND_SUSPEND1 (0x02)
59 #define SUSPEND_SUSPEND2 (0x04)
60 #define SUSPEND_SUSPEND3 (0x08)
61 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
62 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
64 struct smsc95xx_priv
{
69 spinlock_t mac_cr_lock
;
74 static bool turbo_mode
= true;
75 module_param(turbo_mode
, bool, 0644);
76 MODULE_PARM_DESC(turbo_mode
, "Enable multiple frames per Rx transaction");
78 static int __must_check
__smsc95xx_read_reg(struct usbnet
*dev
, u32 index
,
83 int (*fn
)(struct usbnet
*, u8
, u8
, u16
, u16
, void *, u16
);
90 fn
= usbnet_read_cmd_nopm
;
92 ret
= fn(dev
, USB_VENDOR_REQUEST_READ_REGISTER
, USB_DIR_IN
93 | USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
95 if (unlikely(ret
< 0)) {
96 netdev_warn(dev
->net
, "Failed to read reg index 0x%08x: %d\n",
107 static int __must_check
__smsc95xx_write_reg(struct usbnet
*dev
, u32 index
,
112 int (*fn
)(struct usbnet
*, u8
, u8
, u16
, u16
, const void *, u16
);
117 fn
= usbnet_write_cmd
;
119 fn
= usbnet_write_cmd_nopm
;
124 ret
= fn(dev
, USB_VENDOR_REQUEST_WRITE_REGISTER
, USB_DIR_OUT
125 | USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
127 if (unlikely(ret
< 0))
128 netdev_warn(dev
->net
, "Failed to write reg index 0x%08x: %d\n",
134 static int __must_check
smsc95xx_read_reg_nopm(struct usbnet
*dev
, u32 index
,
137 return __smsc95xx_read_reg(dev
, index
, data
, 1);
140 static int __must_check
smsc95xx_write_reg_nopm(struct usbnet
*dev
, u32 index
,
143 return __smsc95xx_write_reg(dev
, index
, data
, 1);
146 static int __must_check
smsc95xx_read_reg(struct usbnet
*dev
, u32 index
,
149 return __smsc95xx_read_reg(dev
, index
, data
, 0);
152 static int __must_check
smsc95xx_write_reg(struct usbnet
*dev
, u32 index
,
155 return __smsc95xx_write_reg(dev
, index
, data
, 0);
158 /* Loop until the read is completed with timeout
159 * called with phy_mutex held */
160 static int __must_check
__smsc95xx_phy_wait_not_busy(struct usbnet
*dev
,
163 unsigned long start_time
= jiffies
;
168 ret
= __smsc95xx_read_reg(dev
, MII_ADDR
, &val
, in_pm
);
170 netdev_warn(dev
->net
, "Error reading MII_ACCESS\n");
174 if (!(val
& MII_BUSY_
))
176 } while (!time_after(jiffies
, start_time
+ HZ
));
181 static int __smsc95xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
,
184 struct usbnet
*dev
= netdev_priv(netdev
);
188 mutex_lock(&dev
->phy_mutex
);
190 /* confirm MII not busy */
191 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
193 netdev_warn(dev
->net
, "MII is busy in smsc95xx_mdio_read\n");
197 /* set the address, index & direction (read from PHY) */
198 phy_id
&= dev
->mii
.phy_id_mask
;
199 idx
&= dev
->mii
.reg_num_mask
;
200 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_READ_
| MII_BUSY_
;
201 ret
= __smsc95xx_write_reg(dev
, MII_ADDR
, addr
, in_pm
);
203 netdev_warn(dev
->net
, "Error writing MII_ADDR\n");
207 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
209 netdev_warn(dev
->net
, "Timed out reading MII reg %02X\n", idx
);
213 ret
= __smsc95xx_read_reg(dev
, MII_DATA
, &val
, in_pm
);
215 netdev_warn(dev
->net
, "Error reading MII_DATA\n");
219 ret
= (u16
)(val
& 0xFFFF);
222 mutex_unlock(&dev
->phy_mutex
);
226 static void __smsc95xx_mdio_write(struct net_device
*netdev
, int phy_id
,
227 int idx
, int regval
, int in_pm
)
229 struct usbnet
*dev
= netdev_priv(netdev
);
233 mutex_lock(&dev
->phy_mutex
);
235 /* confirm MII not busy */
236 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
238 netdev_warn(dev
->net
, "MII is busy in smsc95xx_mdio_write\n");
243 ret
= __smsc95xx_write_reg(dev
, MII_DATA
, val
, in_pm
);
245 netdev_warn(dev
->net
, "Error writing MII_DATA\n");
249 /* set the address, index & direction (write to PHY) */
250 phy_id
&= dev
->mii
.phy_id_mask
;
251 idx
&= dev
->mii
.reg_num_mask
;
252 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_WRITE_
| MII_BUSY_
;
253 ret
= __smsc95xx_write_reg(dev
, MII_ADDR
, addr
, in_pm
);
255 netdev_warn(dev
->net
, "Error writing MII_ADDR\n");
259 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
261 netdev_warn(dev
->net
, "Timed out writing MII reg %02X\n", idx
);
266 mutex_unlock(&dev
->phy_mutex
);
269 static int smsc95xx_mdio_read_nopm(struct net_device
*netdev
, int phy_id
,
272 return __smsc95xx_mdio_read(netdev
, phy_id
, idx
, 1);
275 static void smsc95xx_mdio_write_nopm(struct net_device
*netdev
, int phy_id
,
278 __smsc95xx_mdio_write(netdev
, phy_id
, idx
, regval
, 1);
281 static int smsc95xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
)
283 return __smsc95xx_mdio_read(netdev
, phy_id
, idx
, 0);
286 static void smsc95xx_mdio_write(struct net_device
*netdev
, int phy_id
, int idx
,
289 __smsc95xx_mdio_write(netdev
, phy_id
, idx
, regval
, 0);
292 static int __must_check
smsc95xx_wait_eeprom(struct usbnet
*dev
)
294 unsigned long start_time
= jiffies
;
299 ret
= smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
301 netdev_warn(dev
->net
, "Error reading E2P_CMD\n");
305 if (!(val
& E2P_CMD_BUSY_
) || (val
& E2P_CMD_TIMEOUT_
))
308 } while (!time_after(jiffies
, start_time
+ HZ
));
310 if (val
& (E2P_CMD_TIMEOUT_
| E2P_CMD_BUSY_
)) {
311 netdev_warn(dev
->net
, "EEPROM read operation timeout\n");
318 static int __must_check
smsc95xx_eeprom_confirm_not_busy(struct usbnet
*dev
)
320 unsigned long start_time
= jiffies
;
325 ret
= smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
327 netdev_warn(dev
->net
, "Error reading E2P_CMD\n");
331 if (!(val
& E2P_CMD_BUSY_
))
335 } while (!time_after(jiffies
, start_time
+ HZ
));
337 netdev_warn(dev
->net
, "EEPROM is busy\n");
341 static int smsc95xx_read_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
350 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
354 for (i
= 0; i
< length
; i
++) {
355 val
= E2P_CMD_BUSY_
| E2P_CMD_READ_
| (offset
& E2P_CMD_ADDR_
);
356 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
358 netdev_warn(dev
->net
, "Error writing E2P_CMD\n");
362 ret
= smsc95xx_wait_eeprom(dev
);
366 ret
= smsc95xx_read_reg(dev
, E2P_DATA
, &val
);
368 netdev_warn(dev
->net
, "Error reading E2P_DATA\n");
372 data
[i
] = val
& 0xFF;
379 static int smsc95xx_write_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
388 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
392 /* Issue write/erase enable command */
393 val
= E2P_CMD_BUSY_
| E2P_CMD_EWEN_
;
394 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
396 netdev_warn(dev
->net
, "Error writing E2P_DATA\n");
400 ret
= smsc95xx_wait_eeprom(dev
);
404 for (i
= 0; i
< length
; i
++) {
406 /* Fill data register */
408 ret
= smsc95xx_write_reg(dev
, E2P_DATA
, val
);
410 netdev_warn(dev
->net
, "Error writing E2P_DATA\n");
414 /* Send "write" command */
415 val
= E2P_CMD_BUSY_
| E2P_CMD_WRITE_
| (offset
& E2P_CMD_ADDR_
);
416 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
418 netdev_warn(dev
->net
, "Error writing E2P_CMD\n");
422 ret
= smsc95xx_wait_eeprom(dev
);
432 static int __must_check
smsc95xx_write_reg_async(struct usbnet
*dev
, u16 index
,
442 ret
= usbnet_write_cmd_async(dev
, USB_VENDOR_REQUEST_WRITE_REGISTER
,
443 USB_DIR_OUT
| USB_TYPE_VENDOR
|
445 0, index
, &buf
, size
);
447 netdev_warn(dev
->net
, "Error write async cmd, sts=%d\n",
452 /* returns hash bit number for given MAC address
454 * 01 00 5E 00 00 01 -> returns bit number 31 */
455 static unsigned int smsc95xx_hash(char addr
[ETH_ALEN
])
457 return (ether_crc(ETH_ALEN
, addr
) >> 26) & 0x3f;
460 static void smsc95xx_set_multicast(struct net_device
*netdev
)
462 struct usbnet
*dev
= netdev_priv(netdev
);
463 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
470 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
472 if (dev
->net
->flags
& IFF_PROMISC
) {
473 netif_dbg(dev
, drv
, dev
->net
, "promiscuous mode enabled\n");
474 pdata
->mac_cr
|= MAC_CR_PRMS_
;
475 pdata
->mac_cr
&= ~(MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
476 } else if (dev
->net
->flags
& IFF_ALLMULTI
) {
477 netif_dbg(dev
, drv
, dev
->net
, "receive all multicast enabled\n");
478 pdata
->mac_cr
|= MAC_CR_MCPAS_
;
479 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_HPFILT_
);
480 } else if (!netdev_mc_empty(dev
->net
)) {
481 struct netdev_hw_addr
*ha
;
483 pdata
->mac_cr
|= MAC_CR_HPFILT_
;
484 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
486 netdev_for_each_mc_addr(ha
, netdev
) {
487 u32 bitnum
= smsc95xx_hash(ha
->addr
);
488 u32 mask
= 0x01 << (bitnum
& 0x1F);
490 pdata
->hash_hi
|= mask
;
492 pdata
->hash_lo
|= mask
;
495 netif_dbg(dev
, drv
, dev
->net
, "HASHH=0x%08X, HASHL=0x%08X\n",
496 pdata
->hash_hi
, pdata
->hash_lo
);
498 netif_dbg(dev
, drv
, dev
->net
, "receive own packets only\n");
500 ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
503 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
505 /* Initiate async writes, as we can't wait for completion here */
506 ret
= smsc95xx_write_reg_async(dev
, HASHH
, pdata
->hash_hi
);
508 netdev_warn(dev
->net
, "failed to initiate async write to HASHH\n");
510 ret
= smsc95xx_write_reg_async(dev
, HASHL
, pdata
->hash_lo
);
512 netdev_warn(dev
->net
, "failed to initiate async write to HASHL\n");
514 ret
= smsc95xx_write_reg_async(dev
, MAC_CR
, pdata
->mac_cr
);
516 netdev_warn(dev
->net
, "failed to initiate async write to MAC_CR\n");
519 static int smsc95xx_phy_update_flowcontrol(struct usbnet
*dev
, u8 duplex
,
520 u16 lcladv
, u16 rmtadv
)
522 u32 flow
, afc_cfg
= 0;
524 int ret
= smsc95xx_read_reg(dev
, AFC_CFG
, &afc_cfg
);
528 if (duplex
== DUPLEX_FULL
) {
529 u8 cap
= mii_resolve_flowctrl_fdx(lcladv
, rmtadv
);
531 if (cap
& FLOW_CTRL_RX
)
536 if (cap
& FLOW_CTRL_TX
)
541 netif_dbg(dev
, link
, dev
->net
, "rx pause %s, tx pause %s\n",
542 cap
& FLOW_CTRL_RX
? "enabled" : "disabled",
543 cap
& FLOW_CTRL_TX
? "enabled" : "disabled");
545 netif_dbg(dev
, link
, dev
->net
, "half duplex\n");
550 ret
= smsc95xx_write_reg(dev
, FLOW
, flow
);
554 return smsc95xx_write_reg(dev
, AFC_CFG
, afc_cfg
);
557 static int smsc95xx_link_reset(struct usbnet
*dev
)
559 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
560 struct mii_if_info
*mii
= &dev
->mii
;
561 struct ethtool_cmd ecmd
= { .cmd
= ETHTOOL_GSET
};
566 /* clear interrupt status */
567 ret
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, PHY_INT_SRC
);
571 ret
= smsc95xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL_
);
575 mii_check_media(mii
, 1, 1);
576 mii_ethtool_gset(&dev
->mii
, &ecmd
);
577 lcladv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_ADVERTISE
);
578 rmtadv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_LPA
);
580 netif_dbg(dev
, link
, dev
->net
,
581 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
582 ethtool_cmd_speed(&ecmd
), ecmd
.duplex
, lcladv
, rmtadv
);
584 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
585 if (ecmd
.duplex
!= DUPLEX_FULL
) {
586 pdata
->mac_cr
&= ~MAC_CR_FDPX_
;
587 pdata
->mac_cr
|= MAC_CR_RCVOWN_
;
589 pdata
->mac_cr
&= ~MAC_CR_RCVOWN_
;
590 pdata
->mac_cr
|= MAC_CR_FDPX_
;
592 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
594 ret
= smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
598 ret
= smsc95xx_phy_update_flowcontrol(dev
, ecmd
.duplex
, lcladv
, rmtadv
);
600 netdev_warn(dev
->net
, "Error updating PHY flow control\n");
605 static void smsc95xx_status(struct usbnet
*dev
, struct urb
*urb
)
609 if (urb
->actual_length
!= 4) {
610 netdev_warn(dev
->net
, "unexpected urb length %d\n",
615 memcpy(&intdata
, urb
->transfer_buffer
, 4);
616 le32_to_cpus(&intdata
);
618 netif_dbg(dev
, link
, dev
->net
, "intdata: 0x%08X\n", intdata
);
620 if (intdata
& INT_ENP_PHY_INT_
)
621 usbnet_defer_kevent(dev
, EVENT_LINK_RESET
);
623 netdev_warn(dev
->net
, "unexpected interrupt, intdata=0x%08X\n",
627 /* Enable or disable Tx & Rx checksum offload engines */
628 static int smsc95xx_set_features(struct net_device
*netdev
,
629 netdev_features_t features
)
631 struct usbnet
*dev
= netdev_priv(netdev
);
635 ret
= smsc95xx_read_reg(dev
, COE_CR
, &read_buf
);
639 if (features
& NETIF_F_HW_CSUM
)
640 read_buf
|= Tx_COE_EN_
;
642 read_buf
&= ~Tx_COE_EN_
;
644 if (features
& NETIF_F_RXCSUM
)
645 read_buf
|= Rx_COE_EN_
;
647 read_buf
&= ~Rx_COE_EN_
;
649 ret
= smsc95xx_write_reg(dev
, COE_CR
, read_buf
);
653 netif_dbg(dev
, hw
, dev
->net
, "COE_CR = 0x%08x\n", read_buf
);
657 static int smsc95xx_ethtool_get_eeprom_len(struct net_device
*net
)
659 return MAX_EEPROM_SIZE
;
662 static int smsc95xx_ethtool_get_eeprom(struct net_device
*netdev
,
663 struct ethtool_eeprom
*ee
, u8
*data
)
665 struct usbnet
*dev
= netdev_priv(netdev
);
667 ee
->magic
= LAN95XX_EEPROM_MAGIC
;
669 return smsc95xx_read_eeprom(dev
, ee
->offset
, ee
->len
, data
);
672 static int smsc95xx_ethtool_set_eeprom(struct net_device
*netdev
,
673 struct ethtool_eeprom
*ee
, u8
*data
)
675 struct usbnet
*dev
= netdev_priv(netdev
);
677 if (ee
->magic
!= LAN95XX_EEPROM_MAGIC
) {
678 netdev_warn(dev
->net
, "EEPROM: magic value mismatch, magic = 0x%x\n",
683 return smsc95xx_write_eeprom(dev
, ee
->offset
, ee
->len
, data
);
686 static int smsc95xx_ethtool_getregslen(struct net_device
*netdev
)
688 /* all smsc95xx registers */
689 return COE_CR
- ID_REV
+ sizeof(u32
);
693 smsc95xx_ethtool_getregs(struct net_device
*netdev
, struct ethtool_regs
*regs
,
696 struct usbnet
*dev
= netdev_priv(netdev
);
701 retval
= smsc95xx_read_reg(dev
, ID_REV
, ®s
->version
);
703 netdev_warn(netdev
, "REGS: cannot read ID_REV\n");
707 for (i
= ID_REV
, j
= 0; i
<= COE_CR
; i
+= (sizeof(u32
)), j
++) {
708 retval
= smsc95xx_read_reg(dev
, i
, &data
[j
]);
710 netdev_warn(netdev
, "REGS: cannot read reg[%x]\n", i
);
716 static void smsc95xx_ethtool_get_wol(struct net_device
*net
,
717 struct ethtool_wolinfo
*wolinfo
)
719 struct usbnet
*dev
= netdev_priv(net
);
720 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
722 wolinfo
->supported
= SUPPORTED_WAKE
;
723 wolinfo
->wolopts
= pdata
->wolopts
;
726 static int smsc95xx_ethtool_set_wol(struct net_device
*net
,
727 struct ethtool_wolinfo
*wolinfo
)
729 struct usbnet
*dev
= netdev_priv(net
);
730 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
733 pdata
->wolopts
= wolinfo
->wolopts
& SUPPORTED_WAKE
;
735 ret
= device_set_wakeup_enable(&dev
->udev
->dev
, pdata
->wolopts
);
737 netdev_warn(dev
->net
, "device_set_wakeup_enable error %d\n", ret
);
742 static const struct ethtool_ops smsc95xx_ethtool_ops
= {
743 .get_link
= usbnet_get_link
,
744 .nway_reset
= usbnet_nway_reset
,
745 .get_drvinfo
= usbnet_get_drvinfo
,
746 .get_msglevel
= usbnet_get_msglevel
,
747 .set_msglevel
= usbnet_set_msglevel
,
748 .get_settings
= usbnet_get_settings
,
749 .set_settings
= usbnet_set_settings
,
750 .get_eeprom_len
= smsc95xx_ethtool_get_eeprom_len
,
751 .get_eeprom
= smsc95xx_ethtool_get_eeprom
,
752 .set_eeprom
= smsc95xx_ethtool_set_eeprom
,
753 .get_regs_len
= smsc95xx_ethtool_getregslen
,
754 .get_regs
= smsc95xx_ethtool_getregs
,
755 .get_wol
= smsc95xx_ethtool_get_wol
,
756 .set_wol
= smsc95xx_ethtool_set_wol
,
759 static int smsc95xx_ioctl(struct net_device
*netdev
, struct ifreq
*rq
, int cmd
)
761 struct usbnet
*dev
= netdev_priv(netdev
);
763 if (!netif_running(netdev
))
766 return generic_mii_ioctl(&dev
->mii
, if_mii(rq
), cmd
, NULL
);
769 static void smsc95xx_init_mac_address(struct usbnet
*dev
)
773 /* maybe the boot loader passed the MAC address in devicetree */
774 mac_addr
= of_get_mac_address(dev
->udev
->dev
.of_node
);
776 memcpy(dev
->net
->dev_addr
, mac_addr
, ETH_ALEN
);
780 /* try reading mac address from EEPROM */
781 if (smsc95xx_read_eeprom(dev
, EEPROM_MAC_OFFSET
, ETH_ALEN
,
782 dev
->net
->dev_addr
) == 0) {
783 if (is_valid_ether_addr(dev
->net
->dev_addr
)) {
784 /* eeprom values are valid so use them */
785 netif_dbg(dev
, ifup
, dev
->net
, "MAC address read from EEPROM\n");
790 /* no useful static MAC address found. generate a random one */
791 eth_hw_addr_random(dev
->net
);
792 netif_dbg(dev
, ifup
, dev
->net
, "MAC address set to eth_random_addr\n");
795 static int smsc95xx_set_mac_address(struct usbnet
*dev
)
797 u32 addr_lo
= dev
->net
->dev_addr
[0] | dev
->net
->dev_addr
[1] << 8 |
798 dev
->net
->dev_addr
[2] << 16 | dev
->net
->dev_addr
[3] << 24;
799 u32 addr_hi
= dev
->net
->dev_addr
[4] | dev
->net
->dev_addr
[5] << 8;
802 ret
= smsc95xx_write_reg(dev
, ADDRL
, addr_lo
);
806 return smsc95xx_write_reg(dev
, ADDRH
, addr_hi
);
809 /* starts the TX path */
810 static int smsc95xx_start_tx_path(struct usbnet
*dev
)
812 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
816 /* Enable Tx at MAC */
817 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
818 pdata
->mac_cr
|= MAC_CR_TXEN_
;
819 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
821 ret
= smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
825 /* Enable Tx at SCSRs */
826 return smsc95xx_write_reg(dev
, TX_CFG
, TX_CFG_ON_
);
829 /* Starts the Receive path */
830 static int smsc95xx_start_rx_path(struct usbnet
*dev
, int in_pm
)
832 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
835 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
836 pdata
->mac_cr
|= MAC_CR_RXEN_
;
837 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
839 return __smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
, in_pm
);
842 static int smsc95xx_phy_initialize(struct usbnet
*dev
)
844 int bmcr
, ret
, timeout
= 0;
846 /* Initialize MII structure */
847 dev
->mii
.dev
= dev
->net
;
848 dev
->mii
.mdio_read
= smsc95xx_mdio_read
;
849 dev
->mii
.mdio_write
= smsc95xx_mdio_write
;
850 dev
->mii
.phy_id_mask
= 0x1f;
851 dev
->mii
.reg_num_mask
= 0x1f;
852 dev
->mii
.phy_id
= SMSC95XX_INTERNAL_PHY_ID
;
854 /* reset phy and wait for reset to complete */
855 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
, BMCR_RESET
);
859 bmcr
= smsc95xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
);
861 } while ((bmcr
& BMCR_RESET
) && (timeout
< 100));
863 if (timeout
>= 100) {
864 netdev_warn(dev
->net
, "timeout on PHY Reset");
868 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_ADVERTISE
,
869 ADVERTISE_ALL
| ADVERTISE_CSMA
| ADVERTISE_PAUSE_CAP
|
870 ADVERTISE_PAUSE_ASYM
);
873 ret
= smsc95xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, PHY_INT_SRC
);
875 netdev_warn(dev
->net
, "Failed to read PHY_INT_SRC during init\n");
879 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, PHY_INT_MASK
,
880 PHY_INT_MASK_DEFAULT_
);
881 mii_nway_restart(&dev
->mii
);
883 netif_dbg(dev
, ifup
, dev
->net
, "phy initialised successfully\n");
887 static int smsc95xx_reset(struct usbnet
*dev
)
889 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
890 u32 read_buf
, write_buf
, burst_cap
;
891 int ret
= 0, timeout
;
893 netif_dbg(dev
, ifup
, dev
->net
, "entering smsc95xx_reset\n");
895 ret
= smsc95xx_write_reg(dev
, HW_CFG
, HW_CFG_LRST_
);
902 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
906 } while ((read_buf
& HW_CFG_LRST_
) && (timeout
< 100));
908 if (timeout
>= 100) {
909 netdev_warn(dev
->net
, "timeout waiting for completion of Lite Reset\n");
913 ret
= smsc95xx_write_reg(dev
, PM_CTRL
, PM_CTL_PHY_RST_
);
920 ret
= smsc95xx_read_reg(dev
, PM_CTRL
, &read_buf
);
924 } while ((read_buf
& PM_CTL_PHY_RST_
) && (timeout
< 100));
926 if (timeout
>= 100) {
927 netdev_warn(dev
->net
, "timeout waiting for PHY Reset\n");
931 ret
= smsc95xx_set_mac_address(dev
);
935 netif_dbg(dev
, ifup
, dev
->net
, "MAC Address: %pM\n",
938 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
942 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG : 0x%08x\n",
945 read_buf
|= HW_CFG_BIR_
;
947 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
951 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
955 netif_dbg(dev
, ifup
, dev
->net
,
956 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
961 dev
->rx_urb_size
= MAX_SINGLE_PACKET_SIZE
;
962 } else if (dev
->udev
->speed
== USB_SPEED_HIGH
) {
963 burst_cap
= DEFAULT_HS_BURST_CAP_SIZE
/ HS_USB_PKT_SIZE
;
964 dev
->rx_urb_size
= DEFAULT_HS_BURST_CAP_SIZE
;
966 burst_cap
= DEFAULT_FS_BURST_CAP_SIZE
/ FS_USB_PKT_SIZE
;
967 dev
->rx_urb_size
= DEFAULT_FS_BURST_CAP_SIZE
;
970 netif_dbg(dev
, ifup
, dev
->net
, "rx_urb_size=%ld\n",
971 (ulong
)dev
->rx_urb_size
);
973 ret
= smsc95xx_write_reg(dev
, BURST_CAP
, burst_cap
);
977 ret
= smsc95xx_read_reg(dev
, BURST_CAP
, &read_buf
);
981 netif_dbg(dev
, ifup
, dev
->net
,
982 "Read Value from BURST_CAP after writing: 0x%08x\n",
985 ret
= smsc95xx_write_reg(dev
, BULK_IN_DLY
, DEFAULT_BULK_IN_DELAY
);
989 ret
= smsc95xx_read_reg(dev
, BULK_IN_DLY
, &read_buf
);
993 netif_dbg(dev
, ifup
, dev
->net
,
994 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
997 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
1001 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG: 0x%08x\n",
1005 read_buf
|= (HW_CFG_MEF_
| HW_CFG_BCE_
);
1007 read_buf
&= ~HW_CFG_RXDOFF_
;
1009 /* set Rx data offset=2, Make IP header aligns on word boundary. */
1010 read_buf
|= NET_IP_ALIGN
<< 9;
1012 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
1016 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
1020 netif_dbg(dev
, ifup
, dev
->net
,
1021 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf
);
1023 ret
= smsc95xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL_
);
1027 ret
= smsc95xx_read_reg(dev
, ID_REV
, &read_buf
);
1030 netif_dbg(dev
, ifup
, dev
->net
, "ID_REV = 0x%08x\n", read_buf
);
1032 /* Configure GPIO pins as LED outputs */
1033 write_buf
= LED_GPIO_CFG_SPD_LED
| LED_GPIO_CFG_LNK_LED
|
1034 LED_GPIO_CFG_FDX_LED
;
1035 ret
= smsc95xx_write_reg(dev
, LED_GPIO_CFG
, write_buf
);
1040 ret
= smsc95xx_write_reg(dev
, FLOW
, 0);
1044 ret
= smsc95xx_write_reg(dev
, AFC_CFG
, AFC_CFG_DEFAULT
);
1048 /* Don't need mac_cr_lock during initialisation */
1049 ret
= smsc95xx_read_reg(dev
, MAC_CR
, &pdata
->mac_cr
);
1055 ret
= smsc95xx_write_reg(dev
, VLAN1
, (u32
)ETH_P_8021Q
);
1059 /* Enable or disable checksum offload engines */
1060 ret
= smsc95xx_set_features(dev
->net
, dev
->net
->features
);
1062 netdev_warn(dev
->net
, "Failed to set checksum offload features\n");
1066 smsc95xx_set_multicast(dev
->net
);
1068 ret
= smsc95xx_phy_initialize(dev
);
1070 netdev_warn(dev
->net
, "Failed to init PHY\n");
1074 ret
= smsc95xx_read_reg(dev
, INT_EP_CTL
, &read_buf
);
1078 /* enable PHY interrupts */
1079 read_buf
|= INT_EP_CTL_PHY_INT_
;
1081 ret
= smsc95xx_write_reg(dev
, INT_EP_CTL
, read_buf
);
1085 ret
= smsc95xx_start_tx_path(dev
);
1087 netdev_warn(dev
->net
, "Failed to start TX path\n");
1091 ret
= smsc95xx_start_rx_path(dev
, 0);
1093 netdev_warn(dev
->net
, "Failed to start RX path\n");
1097 netif_dbg(dev
, ifup
, dev
->net
, "smsc95xx_reset, return 0\n");
1101 static const struct net_device_ops smsc95xx_netdev_ops
= {
1102 .ndo_open
= usbnet_open
,
1103 .ndo_stop
= usbnet_stop
,
1104 .ndo_start_xmit
= usbnet_start_xmit
,
1105 .ndo_tx_timeout
= usbnet_tx_timeout
,
1106 .ndo_change_mtu
= usbnet_change_mtu
,
1107 .ndo_set_mac_address
= eth_mac_addr
,
1108 .ndo_validate_addr
= eth_validate_addr
,
1109 .ndo_do_ioctl
= smsc95xx_ioctl
,
1110 .ndo_set_rx_mode
= smsc95xx_set_multicast
,
1111 .ndo_set_features
= smsc95xx_set_features
,
1114 static int smsc95xx_bind(struct usbnet
*dev
, struct usb_interface
*intf
)
1116 struct smsc95xx_priv
*pdata
= NULL
;
1120 printk(KERN_INFO SMSC_CHIPNAME
" v" SMSC_DRIVER_VERSION
"\n");
1122 ret
= usbnet_get_endpoints(dev
, intf
);
1124 netdev_warn(dev
->net
, "usbnet_get_endpoints failed: %d\n", ret
);
1128 dev
->data
[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv
),
1131 pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1135 spin_lock_init(&pdata
->mac_cr_lock
);
1137 if (DEFAULT_TX_CSUM_ENABLE
)
1138 dev
->net
->features
|= NETIF_F_HW_CSUM
;
1139 if (DEFAULT_RX_CSUM_ENABLE
)
1140 dev
->net
->features
|= NETIF_F_RXCSUM
;
1142 dev
->net
->hw_features
= NETIF_F_HW_CSUM
| NETIF_F_RXCSUM
;
1144 smsc95xx_init_mac_address(dev
);
1146 /* Init all registers */
1147 ret
= smsc95xx_reset(dev
);
1149 /* detect device revision as different features may be available */
1150 ret
= smsc95xx_read_reg(dev
, ID_REV
, &val
);
1155 if ((val
== ID_REV_CHIP_ID_9500A_
) || (val
== ID_REV_CHIP_ID_9530_
) ||
1156 (val
== ID_REV_CHIP_ID_89530_
) || (val
== ID_REV_CHIP_ID_9730_
))
1157 pdata
->features
= (FEATURE_8_WAKEUP_FILTERS
|
1158 FEATURE_PHY_NLP_CROSSOVER
|
1159 FEATURE_REMOTE_WAKEUP
);
1160 else if (val
== ID_REV_CHIP_ID_9512_
)
1161 pdata
->features
= FEATURE_8_WAKEUP_FILTERS
;
1163 dev
->net
->netdev_ops
= &smsc95xx_netdev_ops
;
1164 dev
->net
->ethtool_ops
= &smsc95xx_ethtool_ops
;
1165 dev
->net
->flags
|= IFF_MULTICAST
;
1166 dev
->net
->hard_header_len
+= SMSC95XX_TX_OVERHEAD_CSUM
;
1167 dev
->hard_mtu
= dev
->net
->mtu
+ dev
->net
->hard_header_len
;
1171 static void smsc95xx_unbind(struct usbnet
*dev
, struct usb_interface
*intf
)
1173 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1175 netif_dbg(dev
, ifdown
, dev
->net
, "free pdata\n");
1182 static u32
smsc_crc(const u8
*buffer
, size_t len
, int filter
)
1184 u32 crc
= bitrev16(crc16(0xFFFF, buffer
, len
));
1185 return crc
<< ((filter
% 2) * 16);
1188 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet
*dev
, u16 mask
)
1190 struct mii_if_info
*mii
= &dev
->mii
;
1193 netdev_dbg(dev
->net
, "enabling PHY wakeup interrupts\n");
1196 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_INT_SRC
);
1200 /* enable interrupt source */
1201 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_INT_MASK
);
1207 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_INT_MASK
, ret
);
1212 static int smsc95xx_link_ok_nopm(struct usbnet
*dev
)
1214 struct mii_if_info
*mii
= &dev
->mii
;
1217 /* first, a dummy read, needed to latch some MII phys */
1218 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, MII_BMSR
);
1222 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, MII_BMSR
);
1226 return !!(ret
& BMSR_LSTATUS
);
1229 static int smsc95xx_enter_suspend0(struct usbnet
*dev
)
1231 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1235 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1239 val
&= (~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
));
1240 val
|= PM_CTL_SUS_MODE_0
;
1242 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1246 /* clear wol status */
1247 val
&= ~PM_CTL_WUPS_
;
1248 val
|= PM_CTL_WUPS_WOL_
;
1250 /* enable energy detection */
1251 if (pdata
->wolopts
& WAKE_PHY
)
1252 val
|= PM_CTL_WUPS_ED_
;
1254 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1258 /* read back PM_CTRL */
1259 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1263 pdata
->suspend_flags
|= SUSPEND_SUSPEND0
;
1268 static int smsc95xx_enter_suspend1(struct usbnet
*dev
)
1270 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1271 struct mii_if_info
*mii
= &dev
->mii
;
1275 /* reconfigure link pulse detection timing for
1276 * compatibility with non-standard link partners
1278 if (pdata
->features
& FEATURE_PHY_NLP_CROSSOVER
)
1279 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_EDPD_CONFIG
,
1280 PHY_EDPD_CONFIG_DEFAULT
);
1282 /* enable energy detect power-down mode */
1283 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_MODE_CTRL_STS
);
1287 ret
|= MODE_CTRL_STS_EDPWRDOWN_
;
1289 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_MODE_CTRL_STS
, ret
);
1291 /* enter SUSPEND1 mode */
1292 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1296 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1297 val
|= PM_CTL_SUS_MODE_1
;
1299 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1303 /* clear wol status, enable energy detection */
1304 val
&= ~PM_CTL_WUPS_
;
1305 val
|= (PM_CTL_WUPS_ED_
| PM_CTL_ED_EN_
);
1307 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1311 pdata
->suspend_flags
|= SUSPEND_SUSPEND1
;
1316 static int smsc95xx_enter_suspend2(struct usbnet
*dev
)
1318 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1322 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1326 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1327 val
|= PM_CTL_SUS_MODE_2
;
1329 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1333 pdata
->suspend_flags
|= SUSPEND_SUSPEND2
;
1338 static int smsc95xx_enter_suspend3(struct usbnet
*dev
)
1340 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1344 ret
= smsc95xx_read_reg_nopm(dev
, RX_FIFO_INF
, &val
);
1349 netdev_info(dev
->net
, "rx fifo not empty in autosuspend\n");
1353 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1357 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1358 val
|= PM_CTL_SUS_MODE_3
| PM_CTL_RES_CLR_WKP_STS
;
1360 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1364 /* clear wol status */
1365 val
&= ~PM_CTL_WUPS_
;
1366 val
|= PM_CTL_WUPS_WOL_
;
1368 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1372 pdata
->suspend_flags
|= SUSPEND_SUSPEND3
;
1377 static int smsc95xx_autosuspend(struct usbnet
*dev
, u32 link_up
)
1379 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1382 if (!netif_running(dev
->net
)) {
1383 /* interface is ifconfig down so fully power down hw */
1384 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND2\n");
1385 return smsc95xx_enter_suspend2(dev
);
1389 /* link is down so enter EDPD mode, but only if device can
1390 * reliably resume from it. This check should be redundant
1391 * as current FEATURE_REMOTE_WAKEUP parts also support
1392 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
1393 if (!(pdata
->features
& FEATURE_PHY_NLP_CROSSOVER
)) {
1394 netdev_warn(dev
->net
, "EDPD not supported\n");
1398 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND1\n");
1400 /* enable PHY wakeup events for if cable is attached */
1401 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1402 PHY_INT_MASK_ANEG_COMP_
);
1404 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1408 netdev_info(dev
->net
, "entering SUSPEND1 mode\n");
1409 return smsc95xx_enter_suspend1(dev
);
1412 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1413 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1414 PHY_INT_MASK_LINK_DOWN_
);
1416 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1420 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND3\n");
1421 return smsc95xx_enter_suspend3(dev
);
1424 static int smsc95xx_suspend(struct usb_interface
*intf
, pm_message_t message
)
1426 struct usbnet
*dev
= usb_get_intfdata(intf
);
1427 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1431 ret
= usbnet_suspend(intf
, message
);
1433 netdev_warn(dev
->net
, "usbnet_suspend error\n");
1437 if (pdata
->suspend_flags
) {
1438 netdev_warn(dev
->net
, "error during last resume\n");
1439 pdata
->suspend_flags
= 0;
1442 /* determine if link is up using only _nopm functions */
1443 link_up
= smsc95xx_link_ok_nopm(dev
);
1445 if (message
.event
== PM_EVENT_AUTO_SUSPEND
&&
1446 (pdata
->features
& FEATURE_REMOTE_WAKEUP
)) {
1447 ret
= smsc95xx_autosuspend(dev
, link_up
);
1451 /* if we get this far we're not autosuspending */
1452 /* if no wol options set, or if link is down and we're not waking on
1453 * PHY activity, enter lowest power SUSPEND2 mode
1455 if (!(pdata
->wolopts
& SUPPORTED_WAKE
) ||
1456 !(link_up
|| (pdata
->wolopts
& WAKE_PHY
))) {
1457 netdev_info(dev
->net
, "entering SUSPEND2 mode\n");
1459 /* disable energy detect (link up) & wake up events */
1460 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1464 val
&= ~(WUCSR_MPEN_
| WUCSR_WAKE_EN_
);
1466 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1470 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1474 val
&= ~(PM_CTL_ED_EN_
| PM_CTL_WOL_EN_
);
1476 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1480 ret
= smsc95xx_enter_suspend2(dev
);
1484 if (pdata
->wolopts
& WAKE_PHY
) {
1485 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1486 (PHY_INT_MASK_ANEG_COMP_
| PHY_INT_MASK_LINK_DOWN_
));
1488 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1492 /* if link is down then configure EDPD and enter SUSPEND1,
1493 * otherwise enter SUSPEND0 below
1496 netdev_info(dev
->net
, "entering SUSPEND1 mode\n");
1497 ret
= smsc95xx_enter_suspend1(dev
);
1502 if (pdata
->wolopts
& (WAKE_BCAST
| WAKE_MCAST
| WAKE_ARP
| WAKE_UCAST
)) {
1503 u32
*filter_mask
= kzalloc(sizeof(u32
) * 32, GFP_KERNEL
);
1507 int wuff_filter_count
=
1508 (pdata
->features
& FEATURE_8_WAKEUP_FILTERS
) ?
1509 LAN9500A_WUFF_NUM
: LAN9500_WUFF_NUM
;
1513 netdev_warn(dev
->net
, "Unable to allocate filter_mask\n");
1518 memset(command
, 0, sizeof(command
));
1519 memset(offset
, 0, sizeof(offset
));
1520 memset(crc
, 0, sizeof(crc
));
1522 if (pdata
->wolopts
& WAKE_BCAST
) {
1523 const u8 bcast
[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1524 netdev_info(dev
->net
, "enabling broadcast detection\n");
1525 filter_mask
[filter
* 4] = 0x003F;
1526 filter_mask
[filter
* 4 + 1] = 0x00;
1527 filter_mask
[filter
* 4 + 2] = 0x00;
1528 filter_mask
[filter
* 4 + 3] = 0x00;
1529 command
[filter
/4] |= 0x05UL
<< ((filter
% 4) * 8);
1530 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1531 crc
[filter
/2] |= smsc_crc(bcast
, 6, filter
);
1535 if (pdata
->wolopts
& WAKE_MCAST
) {
1536 const u8 mcast
[] = {0x01, 0x00, 0x5E};
1537 netdev_info(dev
->net
, "enabling multicast detection\n");
1538 filter_mask
[filter
* 4] = 0x0007;
1539 filter_mask
[filter
* 4 + 1] = 0x00;
1540 filter_mask
[filter
* 4 + 2] = 0x00;
1541 filter_mask
[filter
* 4 + 3] = 0x00;
1542 command
[filter
/4] |= 0x09UL
<< ((filter
% 4) * 8);
1543 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1544 crc
[filter
/2] |= smsc_crc(mcast
, 3, filter
);
1548 if (pdata
->wolopts
& WAKE_ARP
) {
1549 const u8 arp
[] = {0x08, 0x06};
1550 netdev_info(dev
->net
, "enabling ARP detection\n");
1551 filter_mask
[filter
* 4] = 0x0003;
1552 filter_mask
[filter
* 4 + 1] = 0x00;
1553 filter_mask
[filter
* 4 + 2] = 0x00;
1554 filter_mask
[filter
* 4 + 3] = 0x00;
1555 command
[filter
/4] |= 0x05UL
<< ((filter
% 4) * 8);
1556 offset
[filter
/4] |= 0x0C << ((filter
% 4) * 8);
1557 crc
[filter
/2] |= smsc_crc(arp
, 2, filter
);
1561 if (pdata
->wolopts
& WAKE_UCAST
) {
1562 netdev_info(dev
->net
, "enabling unicast detection\n");
1563 filter_mask
[filter
* 4] = 0x003F;
1564 filter_mask
[filter
* 4 + 1] = 0x00;
1565 filter_mask
[filter
* 4 + 2] = 0x00;
1566 filter_mask
[filter
* 4 + 3] = 0x00;
1567 command
[filter
/4] |= 0x01UL
<< ((filter
% 4) * 8);
1568 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1569 crc
[filter
/2] |= smsc_crc(dev
->net
->dev_addr
, ETH_ALEN
, filter
);
1573 for (i
= 0; i
< (wuff_filter_count
* 4); i
++) {
1574 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, filter_mask
[i
]);
1582 for (i
= 0; i
< (wuff_filter_count
/ 4); i
++) {
1583 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, command
[i
]);
1588 for (i
= 0; i
< (wuff_filter_count
/ 4); i
++) {
1589 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, offset
[i
]);
1594 for (i
= 0; i
< (wuff_filter_count
/ 2); i
++) {
1595 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, crc
[i
]);
1600 /* clear any pending pattern match packet status */
1601 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1607 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1612 if (pdata
->wolopts
& WAKE_MAGIC
) {
1613 /* clear any pending magic packet status */
1614 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1620 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1625 /* enable/disable wakeup sources */
1626 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1630 if (pdata
->wolopts
& (WAKE_BCAST
| WAKE_MCAST
| WAKE_ARP
| WAKE_UCAST
)) {
1631 netdev_info(dev
->net
, "enabling pattern match wakeup\n");
1632 val
|= WUCSR_WAKE_EN_
;
1634 netdev_info(dev
->net
, "disabling pattern match wakeup\n");
1635 val
&= ~WUCSR_WAKE_EN_
;
1638 if (pdata
->wolopts
& WAKE_MAGIC
) {
1639 netdev_info(dev
->net
, "enabling magic packet wakeup\n");
1642 netdev_info(dev
->net
, "disabling magic packet wakeup\n");
1643 val
&= ~WUCSR_MPEN_
;
1646 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1650 /* enable wol wakeup source */
1651 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1655 val
|= PM_CTL_WOL_EN_
;
1657 /* phy energy detect wakeup source */
1658 if (pdata
->wolopts
& WAKE_PHY
)
1659 val
|= PM_CTL_ED_EN_
;
1661 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1665 /* enable receiver to enable frame reception */
1666 smsc95xx_start_rx_path(dev
, 1);
1668 /* some wol options are enabled, so enter SUSPEND0 */
1669 netdev_info(dev
->net
, "entering SUSPEND0 mode\n");
1670 ret
= smsc95xx_enter_suspend0(dev
);
1674 * TODO: resume() might need to handle the suspend failure
1677 if (ret
&& PMSG_IS_AUTO(message
))
1678 usbnet_resume(intf
);
1682 static int smsc95xx_resume(struct usb_interface
*intf
)
1684 struct usbnet
*dev
= usb_get_intfdata(intf
);
1685 struct smsc95xx_priv
*pdata
;
1691 pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1692 suspend_flags
= pdata
->suspend_flags
;
1694 netdev_dbg(dev
->net
, "resume suspend_flags=0x%02x\n", suspend_flags
);
1696 /* do this first to ensure it's cleared even in error case */
1697 pdata
->suspend_flags
= 0;
1699 if (suspend_flags
& SUSPEND_ALLMODES
) {
1700 /* clear wake-up sources */
1701 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1705 val
&= ~(WUCSR_WAKE_EN_
| WUCSR_MPEN_
);
1707 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1711 /* clear wake-up status */
1712 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1716 val
&= ~PM_CTL_WOL_EN_
;
1717 val
|= PM_CTL_WUPS_
;
1719 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1724 ret
= usbnet_resume(intf
);
1726 netdev_warn(dev
->net
, "usbnet_resume error\n");
1731 static int smsc95xx_reset_resume(struct usb_interface
*intf
)
1733 struct usbnet
*dev
= usb_get_intfdata(intf
);
1736 ret
= smsc95xx_reset(dev
);
1740 return smsc95xx_resume(intf
);
1743 static void smsc95xx_rx_csum_offload(struct sk_buff
*skb
)
1745 skb
->csum
= *(u16
*)(skb_tail_pointer(skb
) - 2);
1746 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1747 skb_trim(skb
, skb
->len
- 2);
1750 static int smsc95xx_rx_fixup(struct usbnet
*dev
, struct sk_buff
*skb
)
1752 /* This check is no longer done by usbnet */
1753 if (skb
->len
< dev
->net
->hard_header_len
)
1756 while (skb
->len
> 0) {
1757 u32 header
, align_count
;
1758 struct sk_buff
*ax_skb
;
1759 unsigned char *packet
;
1762 memcpy(&header
, skb
->data
, sizeof(header
));
1763 le32_to_cpus(&header
);
1764 skb_pull(skb
, 4 + NET_IP_ALIGN
);
1767 /* get the packet length */
1768 size
= (u16
)((header
& RX_STS_FL_
) >> 16);
1769 align_count
= (4 - ((size
+ NET_IP_ALIGN
) % 4)) % 4;
1771 if (unlikely(header
& RX_STS_ES_
)) {
1772 netif_dbg(dev
, rx_err
, dev
->net
,
1773 "Error header=0x%08x\n", header
);
1774 dev
->net
->stats
.rx_errors
++;
1775 dev
->net
->stats
.rx_dropped
++;
1777 if (header
& RX_STS_CRC_
) {
1778 dev
->net
->stats
.rx_crc_errors
++;
1780 if (header
& (RX_STS_TL_
| RX_STS_RF_
))
1781 dev
->net
->stats
.rx_frame_errors
++;
1783 if ((header
& RX_STS_LE_
) &&
1784 (!(header
& RX_STS_FT_
)))
1785 dev
->net
->stats
.rx_length_errors
++;
1788 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1789 if (unlikely(size
> (ETH_FRAME_LEN
+ 12))) {
1790 netif_dbg(dev
, rx_err
, dev
->net
,
1791 "size err header=0x%08x\n", header
);
1795 /* last frame in this batch */
1796 if (skb
->len
== size
) {
1797 if (dev
->net
->features
& NETIF_F_RXCSUM
)
1798 smsc95xx_rx_csum_offload(skb
);
1799 skb_trim(skb
, skb
->len
- 4); /* remove fcs */
1800 skb
->truesize
= size
+ sizeof(struct sk_buff
);
1805 ax_skb
= skb_clone(skb
, GFP_ATOMIC
);
1806 if (unlikely(!ax_skb
)) {
1807 netdev_warn(dev
->net
, "Error allocating skb\n");
1812 ax_skb
->data
= packet
;
1813 skb_set_tail_pointer(ax_skb
, size
);
1815 if (dev
->net
->features
& NETIF_F_RXCSUM
)
1816 smsc95xx_rx_csum_offload(ax_skb
);
1817 skb_trim(ax_skb
, ax_skb
->len
- 4); /* remove fcs */
1818 ax_skb
->truesize
= size
+ sizeof(struct sk_buff
);
1820 usbnet_skb_return(dev
, ax_skb
);
1823 skb_pull(skb
, size
);
1825 /* padding bytes before the next frame starts */
1827 skb_pull(skb
, align_count
);
1833 static u32
smsc95xx_calc_csum_preamble(struct sk_buff
*skb
)
1835 u16 low_16
= (u16
)skb_checksum_start_offset(skb
);
1836 u16 high_16
= low_16
+ skb
->csum_offset
;
1837 return (high_16
<< 16) | low_16
;
1840 static struct sk_buff
*smsc95xx_tx_fixup(struct usbnet
*dev
,
1841 struct sk_buff
*skb
, gfp_t flags
)
1843 bool csum
= skb
->ip_summed
== CHECKSUM_PARTIAL
;
1844 int overhead
= csum
? SMSC95XX_TX_OVERHEAD_CSUM
: SMSC95XX_TX_OVERHEAD
;
1845 u32 tx_cmd_a
, tx_cmd_b
;
1847 /* We do not advertise SG, so skbs should be already linearized */
1848 BUG_ON(skb_shinfo(skb
)->nr_frags
);
1850 if (skb_headroom(skb
) < overhead
) {
1851 struct sk_buff
*skb2
= skb_copy_expand(skb
,
1852 overhead
, 0, flags
);
1853 dev_kfree_skb_any(skb
);
1860 if (skb
->len
<= 45) {
1861 /* workaround - hardware tx checksum does not work
1862 * properly with extremely small packets */
1863 long csstart
= skb_checksum_start_offset(skb
);
1864 __wsum calc
= csum_partial(skb
->data
+ csstart
,
1865 skb
->len
- csstart
, 0);
1866 *((__sum16
*)(skb
->data
+ csstart
1867 + skb
->csum_offset
)) = csum_fold(calc
);
1871 u32 csum_preamble
= smsc95xx_calc_csum_preamble(skb
);
1873 cpu_to_le32s(&csum_preamble
);
1874 memcpy(skb
->data
, &csum_preamble
, 4);
1879 tx_cmd_b
= (u32
)(skb
->len
- 4);
1881 tx_cmd_b
|= TX_CMD_B_CSUM_ENABLE
;
1882 cpu_to_le32s(&tx_cmd_b
);
1883 memcpy(skb
->data
, &tx_cmd_b
, 4);
1886 tx_cmd_a
= (u32
)(skb
->len
- 8) | TX_CMD_A_FIRST_SEG_
|
1888 cpu_to_le32s(&tx_cmd_a
);
1889 memcpy(skb
->data
, &tx_cmd_a
, 4);
1894 static int smsc95xx_manage_power(struct usbnet
*dev
, int on
)
1896 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1898 dev
->intf
->needs_remote_wakeup
= on
;
1900 if (pdata
->features
& FEATURE_REMOTE_WAKEUP
)
1903 /* this chip revision isn't capable of remote wakeup */
1904 netdev_info(dev
->net
, "hardware isn't capable of remote wakeup\n");
1907 usb_autopm_get_interface_no_resume(dev
->intf
);
1909 usb_autopm_put_interface(dev
->intf
);
1914 static const struct driver_info smsc95xx_info
= {
1915 .description
= "smsc95xx USB 2.0 Ethernet",
1916 .bind
= smsc95xx_bind
,
1917 .unbind
= smsc95xx_unbind
,
1918 .link_reset
= smsc95xx_link_reset
,
1919 .reset
= smsc95xx_reset
,
1920 .rx_fixup
= smsc95xx_rx_fixup
,
1921 .tx_fixup
= smsc95xx_tx_fixup
,
1922 .status
= smsc95xx_status
,
1923 .manage_power
= smsc95xx_manage_power
,
1924 .flags
= FLAG_ETHER
| FLAG_SEND_ZLP
| FLAG_LINK_INTR
,
1927 static const struct usb_device_id products
[] = {
1929 /* SMSC9500 USB Ethernet Device */
1930 USB_DEVICE(0x0424, 0x9500),
1931 .driver_info
= (unsigned long) &smsc95xx_info
,
1934 /* SMSC9505 USB Ethernet Device */
1935 USB_DEVICE(0x0424, 0x9505),
1936 .driver_info
= (unsigned long) &smsc95xx_info
,
1939 /* SMSC9500A USB Ethernet Device */
1940 USB_DEVICE(0x0424, 0x9E00),
1941 .driver_info
= (unsigned long) &smsc95xx_info
,
1944 /* SMSC9505A USB Ethernet Device */
1945 USB_DEVICE(0x0424, 0x9E01),
1946 .driver_info
= (unsigned long) &smsc95xx_info
,
1949 /* SMSC9512/9514 USB Hub & Ethernet Device */
1950 USB_DEVICE(0x0424, 0xec00),
1951 .driver_info
= (unsigned long) &smsc95xx_info
,
1954 /* SMSC9500 USB Ethernet Device (SAL10) */
1955 USB_DEVICE(0x0424, 0x9900),
1956 .driver_info
= (unsigned long) &smsc95xx_info
,
1959 /* SMSC9505 USB Ethernet Device (SAL10) */
1960 USB_DEVICE(0x0424, 0x9901),
1961 .driver_info
= (unsigned long) &smsc95xx_info
,
1964 /* SMSC9500A USB Ethernet Device (SAL10) */
1965 USB_DEVICE(0x0424, 0x9902),
1966 .driver_info
= (unsigned long) &smsc95xx_info
,
1969 /* SMSC9505A USB Ethernet Device (SAL10) */
1970 USB_DEVICE(0x0424, 0x9903),
1971 .driver_info
= (unsigned long) &smsc95xx_info
,
1974 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1975 USB_DEVICE(0x0424, 0x9904),
1976 .driver_info
= (unsigned long) &smsc95xx_info
,
1979 /* SMSC9500A USB Ethernet Device (HAL) */
1980 USB_DEVICE(0x0424, 0x9905),
1981 .driver_info
= (unsigned long) &smsc95xx_info
,
1984 /* SMSC9505A USB Ethernet Device (HAL) */
1985 USB_DEVICE(0x0424, 0x9906),
1986 .driver_info
= (unsigned long) &smsc95xx_info
,
1989 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1990 USB_DEVICE(0x0424, 0x9907),
1991 .driver_info
= (unsigned long) &smsc95xx_info
,
1994 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1995 USB_DEVICE(0x0424, 0x9908),
1996 .driver_info
= (unsigned long) &smsc95xx_info
,
1999 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
2000 USB_DEVICE(0x0424, 0x9909),
2001 .driver_info
= (unsigned long) &smsc95xx_info
,
2004 /* SMSC LAN9530 USB Ethernet Device */
2005 USB_DEVICE(0x0424, 0x9530),
2006 .driver_info
= (unsigned long) &smsc95xx_info
,
2009 /* SMSC LAN9730 USB Ethernet Device */
2010 USB_DEVICE(0x0424, 0x9730),
2011 .driver_info
= (unsigned long) &smsc95xx_info
,
2014 /* SMSC LAN89530 USB Ethernet Device */
2015 USB_DEVICE(0x0424, 0x9E08),
2016 .driver_info
= (unsigned long) &smsc95xx_info
,
2020 MODULE_DEVICE_TABLE(usb
, products
);
2022 static struct usb_driver smsc95xx_driver
= {
2024 .id_table
= products
,
2025 .probe
= usbnet_probe
,
2026 .suspend
= smsc95xx_suspend
,
2027 .resume
= smsc95xx_resume
,
2028 .reset_resume
= smsc95xx_reset_resume
,
2029 .disconnect
= usbnet_disconnect
,
2030 .disable_hub_initiated_lpm
= 1,
2031 .supports_autosuspend
= 1,
2034 module_usb_driver(smsc95xx_driver
);
2036 MODULE_AUTHOR("Nancy Lin");
2037 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2038 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2039 MODULE_LICENSE("GPL");