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",
105 static int __must_check
__smsc95xx_write_reg(struct usbnet
*dev
, u32 index
,
110 int (*fn
)(struct usbnet
*, u8
, u8
, u16
, u16
, const void *, u16
);
115 fn
= usbnet_write_cmd
;
117 fn
= usbnet_write_cmd_nopm
;
122 ret
= fn(dev
, USB_VENDOR_REQUEST_WRITE_REGISTER
, USB_DIR_OUT
123 | USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
125 if (unlikely(ret
< 0))
126 netdev_warn(dev
->net
, "Failed to write reg index 0x%08x: %d\n",
132 static int __must_check
smsc95xx_read_reg_nopm(struct usbnet
*dev
, u32 index
,
135 return __smsc95xx_read_reg(dev
, index
, data
, 1);
138 static int __must_check
smsc95xx_write_reg_nopm(struct usbnet
*dev
, u32 index
,
141 return __smsc95xx_write_reg(dev
, index
, data
, 1);
144 static int __must_check
smsc95xx_read_reg(struct usbnet
*dev
, u32 index
,
147 return __smsc95xx_read_reg(dev
, index
, data
, 0);
150 static int __must_check
smsc95xx_write_reg(struct usbnet
*dev
, u32 index
,
153 return __smsc95xx_write_reg(dev
, index
, data
, 0);
156 /* Loop until the read is completed with timeout
157 * called with phy_mutex held */
158 static int __must_check
__smsc95xx_phy_wait_not_busy(struct usbnet
*dev
,
161 unsigned long start_time
= jiffies
;
166 ret
= __smsc95xx_read_reg(dev
, MII_ADDR
, &val
, in_pm
);
168 netdev_warn(dev
->net
, "Error reading MII_ACCESS\n");
172 if (!(val
& MII_BUSY_
))
174 } while (!time_after(jiffies
, start_time
+ HZ
));
179 static int __smsc95xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
,
182 struct usbnet
*dev
= netdev_priv(netdev
);
186 mutex_lock(&dev
->phy_mutex
);
188 /* confirm MII not busy */
189 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
191 netdev_warn(dev
->net
, "MII is busy in smsc95xx_mdio_read\n");
195 /* set the address, index & direction (read from PHY) */
196 phy_id
&= dev
->mii
.phy_id_mask
;
197 idx
&= dev
->mii
.reg_num_mask
;
198 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_READ_
| MII_BUSY_
;
199 ret
= __smsc95xx_write_reg(dev
, MII_ADDR
, addr
, in_pm
);
201 netdev_warn(dev
->net
, "Error writing MII_ADDR\n");
205 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
207 netdev_warn(dev
->net
, "Timed out reading MII reg %02X\n", idx
);
211 ret
= __smsc95xx_read_reg(dev
, MII_DATA
, &val
, in_pm
);
213 netdev_warn(dev
->net
, "Error reading MII_DATA\n");
217 ret
= (u16
)(val
& 0xFFFF);
220 mutex_unlock(&dev
->phy_mutex
);
224 static void __smsc95xx_mdio_write(struct net_device
*netdev
, int phy_id
,
225 int idx
, int regval
, int in_pm
)
227 struct usbnet
*dev
= netdev_priv(netdev
);
231 mutex_lock(&dev
->phy_mutex
);
233 /* confirm MII not busy */
234 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
236 netdev_warn(dev
->net
, "MII is busy in smsc95xx_mdio_write\n");
241 ret
= __smsc95xx_write_reg(dev
, MII_DATA
, val
, in_pm
);
243 netdev_warn(dev
->net
, "Error writing MII_DATA\n");
247 /* set the address, index & direction (write to PHY) */
248 phy_id
&= dev
->mii
.phy_id_mask
;
249 idx
&= dev
->mii
.reg_num_mask
;
250 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_WRITE_
| MII_BUSY_
;
251 ret
= __smsc95xx_write_reg(dev
, MII_ADDR
, addr
, in_pm
);
253 netdev_warn(dev
->net
, "Error writing MII_ADDR\n");
257 ret
= __smsc95xx_phy_wait_not_busy(dev
, in_pm
);
259 netdev_warn(dev
->net
, "Timed out writing MII reg %02X\n", idx
);
264 mutex_unlock(&dev
->phy_mutex
);
267 static int smsc95xx_mdio_read_nopm(struct net_device
*netdev
, int phy_id
,
270 return __smsc95xx_mdio_read(netdev
, phy_id
, idx
, 1);
273 static void smsc95xx_mdio_write_nopm(struct net_device
*netdev
, int phy_id
,
276 __smsc95xx_mdio_write(netdev
, phy_id
, idx
, regval
, 1);
279 static int smsc95xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
)
281 return __smsc95xx_mdio_read(netdev
, phy_id
, idx
, 0);
284 static void smsc95xx_mdio_write(struct net_device
*netdev
, int phy_id
, int idx
,
287 __smsc95xx_mdio_write(netdev
, phy_id
, idx
, regval
, 0);
290 static int __must_check
smsc95xx_wait_eeprom(struct usbnet
*dev
)
292 unsigned long start_time
= jiffies
;
297 ret
= smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
299 netdev_warn(dev
->net
, "Error reading E2P_CMD\n");
303 if (!(val
& E2P_CMD_BUSY_
) || (val
& E2P_CMD_TIMEOUT_
))
306 } while (!time_after(jiffies
, start_time
+ HZ
));
308 if (val
& (E2P_CMD_TIMEOUT_
| E2P_CMD_BUSY_
)) {
309 netdev_warn(dev
->net
, "EEPROM read operation timeout\n");
316 static int __must_check
smsc95xx_eeprom_confirm_not_busy(struct usbnet
*dev
)
318 unsigned long start_time
= jiffies
;
323 ret
= smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
325 netdev_warn(dev
->net
, "Error reading E2P_CMD\n");
329 if (!(val
& E2P_CMD_BUSY_
))
333 } while (!time_after(jiffies
, start_time
+ HZ
));
335 netdev_warn(dev
->net
, "EEPROM is busy\n");
339 static int smsc95xx_read_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
348 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
352 for (i
= 0; i
< length
; i
++) {
353 val
= E2P_CMD_BUSY_
| E2P_CMD_READ_
| (offset
& E2P_CMD_ADDR_
);
354 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
356 netdev_warn(dev
->net
, "Error writing E2P_CMD\n");
360 ret
= smsc95xx_wait_eeprom(dev
);
364 ret
= smsc95xx_read_reg(dev
, E2P_DATA
, &val
);
366 netdev_warn(dev
->net
, "Error reading E2P_DATA\n");
370 data
[i
] = val
& 0xFF;
377 static int smsc95xx_write_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
386 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
390 /* Issue write/erase enable command */
391 val
= E2P_CMD_BUSY_
| E2P_CMD_EWEN_
;
392 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
394 netdev_warn(dev
->net
, "Error writing E2P_DATA\n");
398 ret
= smsc95xx_wait_eeprom(dev
);
402 for (i
= 0; i
< length
; i
++) {
404 /* Fill data register */
406 ret
= smsc95xx_write_reg(dev
, E2P_DATA
, val
);
408 netdev_warn(dev
->net
, "Error writing E2P_DATA\n");
412 /* Send "write" command */
413 val
= E2P_CMD_BUSY_
| E2P_CMD_WRITE_
| (offset
& E2P_CMD_ADDR_
);
414 ret
= smsc95xx_write_reg(dev
, E2P_CMD
, val
);
416 netdev_warn(dev
->net
, "Error writing E2P_CMD\n");
420 ret
= smsc95xx_wait_eeprom(dev
);
430 static int __must_check
smsc95xx_write_reg_async(struct usbnet
*dev
, u16 index
,
440 ret
= usbnet_write_cmd_async(dev
, USB_VENDOR_REQUEST_WRITE_REGISTER
,
441 USB_DIR_OUT
| USB_TYPE_VENDOR
|
443 0, index
, &buf
, size
);
445 netdev_warn(dev
->net
, "Error write async cmd, sts=%d\n",
450 /* returns hash bit number for given MAC address
452 * 01 00 5E 00 00 01 -> returns bit number 31 */
453 static unsigned int smsc95xx_hash(char addr
[ETH_ALEN
])
455 return (ether_crc(ETH_ALEN
, addr
) >> 26) & 0x3f;
458 static void smsc95xx_set_multicast(struct net_device
*netdev
)
460 struct usbnet
*dev
= netdev_priv(netdev
);
461 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
468 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
470 if (dev
->net
->flags
& IFF_PROMISC
) {
471 netif_dbg(dev
, drv
, dev
->net
, "promiscuous mode enabled\n");
472 pdata
->mac_cr
|= MAC_CR_PRMS_
;
473 pdata
->mac_cr
&= ~(MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
474 } else if (dev
->net
->flags
& IFF_ALLMULTI
) {
475 netif_dbg(dev
, drv
, dev
->net
, "receive all multicast enabled\n");
476 pdata
->mac_cr
|= MAC_CR_MCPAS_
;
477 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_HPFILT_
);
478 } else if (!netdev_mc_empty(dev
->net
)) {
479 struct netdev_hw_addr
*ha
;
481 pdata
->mac_cr
|= MAC_CR_HPFILT_
;
482 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
484 netdev_for_each_mc_addr(ha
, netdev
) {
485 u32 bitnum
= smsc95xx_hash(ha
->addr
);
486 u32 mask
= 0x01 << (bitnum
& 0x1F);
488 pdata
->hash_hi
|= mask
;
490 pdata
->hash_lo
|= mask
;
493 netif_dbg(dev
, drv
, dev
->net
, "HASHH=0x%08X, HASHL=0x%08X\n",
494 pdata
->hash_hi
, pdata
->hash_lo
);
496 netif_dbg(dev
, drv
, dev
->net
, "receive own packets only\n");
498 ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
501 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
503 /* Initiate async writes, as we can't wait for completion here */
504 ret
= smsc95xx_write_reg_async(dev
, HASHH
, pdata
->hash_hi
);
506 netdev_warn(dev
->net
, "failed to initiate async write to HASHH\n");
508 ret
= smsc95xx_write_reg_async(dev
, HASHL
, pdata
->hash_lo
);
510 netdev_warn(dev
->net
, "failed to initiate async write to HASHL\n");
512 ret
= smsc95xx_write_reg_async(dev
, MAC_CR
, pdata
->mac_cr
);
514 netdev_warn(dev
->net
, "failed to initiate async write to MAC_CR\n");
517 static int smsc95xx_phy_update_flowcontrol(struct usbnet
*dev
, u8 duplex
,
518 u16 lcladv
, u16 rmtadv
)
520 u32 flow
, afc_cfg
= 0;
522 int ret
= smsc95xx_read_reg(dev
, AFC_CFG
, &afc_cfg
);
526 if (duplex
== DUPLEX_FULL
) {
527 u8 cap
= mii_resolve_flowctrl_fdx(lcladv
, rmtadv
);
529 if (cap
& FLOW_CTRL_RX
)
534 if (cap
& FLOW_CTRL_TX
)
539 netif_dbg(dev
, link
, dev
->net
, "rx pause %s, tx pause %s\n",
540 cap
& FLOW_CTRL_RX
? "enabled" : "disabled",
541 cap
& FLOW_CTRL_TX
? "enabled" : "disabled");
543 netif_dbg(dev
, link
, dev
->net
, "half duplex\n");
548 ret
= smsc95xx_write_reg(dev
, FLOW
, flow
);
552 return smsc95xx_write_reg(dev
, AFC_CFG
, afc_cfg
);
555 static int smsc95xx_link_reset(struct usbnet
*dev
)
557 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
558 struct mii_if_info
*mii
= &dev
->mii
;
559 struct ethtool_cmd ecmd
= { .cmd
= ETHTOOL_GSET
};
564 /* clear interrupt status */
565 ret
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, PHY_INT_SRC
);
569 ret
= smsc95xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL_
);
573 mii_check_media(mii
, 1, 1);
574 mii_ethtool_gset(&dev
->mii
, &ecmd
);
575 lcladv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_ADVERTISE
);
576 rmtadv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_LPA
);
578 netif_dbg(dev
, link
, dev
->net
,
579 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
580 ethtool_cmd_speed(&ecmd
), ecmd
.duplex
, lcladv
, rmtadv
);
582 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
583 if (ecmd
.duplex
!= DUPLEX_FULL
) {
584 pdata
->mac_cr
&= ~MAC_CR_FDPX_
;
585 pdata
->mac_cr
|= MAC_CR_RCVOWN_
;
587 pdata
->mac_cr
&= ~MAC_CR_RCVOWN_
;
588 pdata
->mac_cr
|= MAC_CR_FDPX_
;
590 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
592 ret
= smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
596 ret
= smsc95xx_phy_update_flowcontrol(dev
, ecmd
.duplex
, lcladv
, rmtadv
);
598 netdev_warn(dev
->net
, "Error updating PHY flow control\n");
603 static void smsc95xx_status(struct usbnet
*dev
, struct urb
*urb
)
607 if (urb
->actual_length
!= 4) {
608 netdev_warn(dev
->net
, "unexpected urb length %d\n",
613 memcpy(&intdata
, urb
->transfer_buffer
, 4);
614 le32_to_cpus(&intdata
);
616 netif_dbg(dev
, link
, dev
->net
, "intdata: 0x%08X\n", intdata
);
618 if (intdata
& INT_ENP_PHY_INT_
)
619 usbnet_defer_kevent(dev
, EVENT_LINK_RESET
);
621 netdev_warn(dev
->net
, "unexpected interrupt, intdata=0x%08X\n",
625 /* Enable or disable Tx & Rx checksum offload engines */
626 static int smsc95xx_set_features(struct net_device
*netdev
,
627 netdev_features_t features
)
629 struct usbnet
*dev
= netdev_priv(netdev
);
633 ret
= smsc95xx_read_reg(dev
, COE_CR
, &read_buf
);
637 if (features
& NETIF_F_HW_CSUM
)
638 read_buf
|= Tx_COE_EN_
;
640 read_buf
&= ~Tx_COE_EN_
;
642 if (features
& NETIF_F_RXCSUM
)
643 read_buf
|= Rx_COE_EN_
;
645 read_buf
&= ~Rx_COE_EN_
;
647 ret
= smsc95xx_write_reg(dev
, COE_CR
, read_buf
);
651 netif_dbg(dev
, hw
, dev
->net
, "COE_CR = 0x%08x\n", read_buf
);
655 static int smsc95xx_ethtool_get_eeprom_len(struct net_device
*net
)
657 return MAX_EEPROM_SIZE
;
660 static int smsc95xx_ethtool_get_eeprom(struct net_device
*netdev
,
661 struct ethtool_eeprom
*ee
, u8
*data
)
663 struct usbnet
*dev
= netdev_priv(netdev
);
665 ee
->magic
= LAN95XX_EEPROM_MAGIC
;
667 return smsc95xx_read_eeprom(dev
, ee
->offset
, ee
->len
, data
);
670 static int smsc95xx_ethtool_set_eeprom(struct net_device
*netdev
,
671 struct ethtool_eeprom
*ee
, u8
*data
)
673 struct usbnet
*dev
= netdev_priv(netdev
);
675 if (ee
->magic
!= LAN95XX_EEPROM_MAGIC
) {
676 netdev_warn(dev
->net
, "EEPROM: magic value mismatch, magic = 0x%x\n",
681 return smsc95xx_write_eeprom(dev
, ee
->offset
, ee
->len
, data
);
684 static int smsc95xx_ethtool_getregslen(struct net_device
*netdev
)
686 /* all smsc95xx registers */
687 return COE_CR
- ID_REV
+ sizeof(u32
);
691 smsc95xx_ethtool_getregs(struct net_device
*netdev
, struct ethtool_regs
*regs
,
694 struct usbnet
*dev
= netdev_priv(netdev
);
699 retval
= smsc95xx_read_reg(dev
, ID_REV
, ®s
->version
);
701 netdev_warn(netdev
, "REGS: cannot read ID_REV\n");
705 for (i
= ID_REV
, j
= 0; i
<= COE_CR
; i
+= (sizeof(u32
)), j
++) {
706 retval
= smsc95xx_read_reg(dev
, i
, &data
[j
]);
708 netdev_warn(netdev
, "REGS: cannot read reg[%x]\n", i
);
714 static void smsc95xx_ethtool_get_wol(struct net_device
*net
,
715 struct ethtool_wolinfo
*wolinfo
)
717 struct usbnet
*dev
= netdev_priv(net
);
718 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
720 wolinfo
->supported
= SUPPORTED_WAKE
;
721 wolinfo
->wolopts
= pdata
->wolopts
;
724 static int smsc95xx_ethtool_set_wol(struct net_device
*net
,
725 struct ethtool_wolinfo
*wolinfo
)
727 struct usbnet
*dev
= netdev_priv(net
);
728 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
731 pdata
->wolopts
= wolinfo
->wolopts
& SUPPORTED_WAKE
;
733 ret
= device_set_wakeup_enable(&dev
->udev
->dev
, pdata
->wolopts
);
735 netdev_warn(dev
->net
, "device_set_wakeup_enable error %d\n", ret
);
740 static const struct ethtool_ops smsc95xx_ethtool_ops
= {
741 .get_link
= usbnet_get_link
,
742 .nway_reset
= usbnet_nway_reset
,
743 .get_drvinfo
= usbnet_get_drvinfo
,
744 .get_msglevel
= usbnet_get_msglevel
,
745 .set_msglevel
= usbnet_set_msglevel
,
746 .get_settings
= usbnet_get_settings
,
747 .set_settings
= usbnet_set_settings
,
748 .get_eeprom_len
= smsc95xx_ethtool_get_eeprom_len
,
749 .get_eeprom
= smsc95xx_ethtool_get_eeprom
,
750 .set_eeprom
= smsc95xx_ethtool_set_eeprom
,
751 .get_regs_len
= smsc95xx_ethtool_getregslen
,
752 .get_regs
= smsc95xx_ethtool_getregs
,
753 .get_wol
= smsc95xx_ethtool_get_wol
,
754 .set_wol
= smsc95xx_ethtool_set_wol
,
757 static int smsc95xx_ioctl(struct net_device
*netdev
, struct ifreq
*rq
, int cmd
)
759 struct usbnet
*dev
= netdev_priv(netdev
);
761 if (!netif_running(netdev
))
764 return generic_mii_ioctl(&dev
->mii
, if_mii(rq
), cmd
, NULL
);
767 static void smsc95xx_init_mac_address(struct usbnet
*dev
)
771 /* maybe the boot loader passed the MAC address in devicetree */
772 mac_addr
= of_get_mac_address(dev
->udev
->dev
.of_node
);
774 memcpy(dev
->net
->dev_addr
, mac_addr
, ETH_ALEN
);
778 /* try reading mac address from EEPROM */
779 if (smsc95xx_read_eeprom(dev
, EEPROM_MAC_OFFSET
, ETH_ALEN
,
780 dev
->net
->dev_addr
) == 0) {
781 if (is_valid_ether_addr(dev
->net
->dev_addr
)) {
782 /* eeprom values are valid so use them */
783 netif_dbg(dev
, ifup
, dev
->net
, "MAC address read from EEPROM\n");
788 /* no useful static MAC address found. generate a random one */
789 eth_hw_addr_random(dev
->net
);
790 netif_dbg(dev
, ifup
, dev
->net
, "MAC address set to eth_random_addr\n");
793 static int smsc95xx_set_mac_address(struct usbnet
*dev
)
795 u32 addr_lo
= dev
->net
->dev_addr
[0] | dev
->net
->dev_addr
[1] << 8 |
796 dev
->net
->dev_addr
[2] << 16 | dev
->net
->dev_addr
[3] << 24;
797 u32 addr_hi
= dev
->net
->dev_addr
[4] | dev
->net
->dev_addr
[5] << 8;
800 ret
= smsc95xx_write_reg(dev
, ADDRL
, addr_lo
);
804 return smsc95xx_write_reg(dev
, ADDRH
, addr_hi
);
807 /* starts the TX path */
808 static int smsc95xx_start_tx_path(struct usbnet
*dev
)
810 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
814 /* Enable Tx at MAC */
815 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
816 pdata
->mac_cr
|= MAC_CR_TXEN_
;
817 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
819 ret
= smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
823 /* Enable Tx at SCSRs */
824 return smsc95xx_write_reg(dev
, TX_CFG
, TX_CFG_ON_
);
827 /* Starts the Receive path */
828 static int smsc95xx_start_rx_path(struct usbnet
*dev
, int in_pm
)
830 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
833 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
834 pdata
->mac_cr
|= MAC_CR_RXEN_
;
835 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
837 return __smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
, in_pm
);
840 static int smsc95xx_phy_initialize(struct usbnet
*dev
)
842 int bmcr
, ret
, timeout
= 0;
844 /* Initialize MII structure */
845 dev
->mii
.dev
= dev
->net
;
846 dev
->mii
.mdio_read
= smsc95xx_mdio_read
;
847 dev
->mii
.mdio_write
= smsc95xx_mdio_write
;
848 dev
->mii
.phy_id_mask
= 0x1f;
849 dev
->mii
.reg_num_mask
= 0x1f;
850 dev
->mii
.phy_id
= SMSC95XX_INTERNAL_PHY_ID
;
852 /* reset phy and wait for reset to complete */
853 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
, BMCR_RESET
);
857 bmcr
= smsc95xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
);
859 } while ((bmcr
& BMCR_RESET
) && (timeout
< 100));
861 if (timeout
>= 100) {
862 netdev_warn(dev
->net
, "timeout on PHY Reset");
866 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_ADVERTISE
,
867 ADVERTISE_ALL
| ADVERTISE_CSMA
| ADVERTISE_PAUSE_CAP
|
868 ADVERTISE_PAUSE_ASYM
);
871 ret
= smsc95xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, PHY_INT_SRC
);
873 netdev_warn(dev
->net
, "Failed to read PHY_INT_SRC during init\n");
877 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, PHY_INT_MASK
,
878 PHY_INT_MASK_DEFAULT_
);
879 mii_nway_restart(&dev
->mii
);
881 netif_dbg(dev
, ifup
, dev
->net
, "phy initialised successfully\n");
885 static int smsc95xx_reset(struct usbnet
*dev
)
887 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
888 u32 read_buf
, write_buf
, burst_cap
;
889 int ret
= 0, timeout
;
891 netif_dbg(dev
, ifup
, dev
->net
, "entering smsc95xx_reset\n");
893 ret
= smsc95xx_write_reg(dev
, HW_CFG
, HW_CFG_LRST_
);
900 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
904 } while ((read_buf
& HW_CFG_LRST_
) && (timeout
< 100));
906 if (timeout
>= 100) {
907 netdev_warn(dev
->net
, "timeout waiting for completion of Lite Reset\n");
911 ret
= smsc95xx_write_reg(dev
, PM_CTRL
, PM_CTL_PHY_RST_
);
918 ret
= smsc95xx_read_reg(dev
, PM_CTRL
, &read_buf
);
922 } while ((read_buf
& PM_CTL_PHY_RST_
) && (timeout
< 100));
924 if (timeout
>= 100) {
925 netdev_warn(dev
->net
, "timeout waiting for PHY Reset\n");
929 ret
= smsc95xx_set_mac_address(dev
);
933 netif_dbg(dev
, ifup
, dev
->net
, "MAC Address: %pM\n",
936 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
940 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG : 0x%08x\n",
943 read_buf
|= HW_CFG_BIR_
;
945 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
949 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
953 netif_dbg(dev
, ifup
, dev
->net
,
954 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
959 dev
->rx_urb_size
= MAX_SINGLE_PACKET_SIZE
;
960 } else if (dev
->udev
->speed
== USB_SPEED_HIGH
) {
961 burst_cap
= DEFAULT_HS_BURST_CAP_SIZE
/ HS_USB_PKT_SIZE
;
962 dev
->rx_urb_size
= DEFAULT_HS_BURST_CAP_SIZE
;
964 burst_cap
= DEFAULT_FS_BURST_CAP_SIZE
/ FS_USB_PKT_SIZE
;
965 dev
->rx_urb_size
= DEFAULT_FS_BURST_CAP_SIZE
;
968 netif_dbg(dev
, ifup
, dev
->net
, "rx_urb_size=%ld\n",
969 (ulong
)dev
->rx_urb_size
);
971 ret
= smsc95xx_write_reg(dev
, BURST_CAP
, burst_cap
);
975 ret
= smsc95xx_read_reg(dev
, BURST_CAP
, &read_buf
);
979 netif_dbg(dev
, ifup
, dev
->net
,
980 "Read Value from BURST_CAP after writing: 0x%08x\n",
983 ret
= smsc95xx_write_reg(dev
, BULK_IN_DLY
, DEFAULT_BULK_IN_DELAY
);
987 ret
= smsc95xx_read_reg(dev
, BULK_IN_DLY
, &read_buf
);
991 netif_dbg(dev
, ifup
, dev
->net
,
992 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
995 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
999 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG: 0x%08x\n",
1003 read_buf
|= (HW_CFG_MEF_
| HW_CFG_BCE_
);
1005 read_buf
&= ~HW_CFG_RXDOFF_
;
1007 /* set Rx data offset=2, Make IP header aligns on word boundary. */
1008 read_buf
|= NET_IP_ALIGN
<< 9;
1010 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
1014 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
1018 netif_dbg(dev
, ifup
, dev
->net
,
1019 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf
);
1021 ret
= smsc95xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL_
);
1025 ret
= smsc95xx_read_reg(dev
, ID_REV
, &read_buf
);
1028 netif_dbg(dev
, ifup
, dev
->net
, "ID_REV = 0x%08x\n", read_buf
);
1030 /* Configure GPIO pins as LED outputs */
1031 write_buf
= LED_GPIO_CFG_SPD_LED
| LED_GPIO_CFG_LNK_LED
|
1032 LED_GPIO_CFG_FDX_LED
;
1033 ret
= smsc95xx_write_reg(dev
, LED_GPIO_CFG
, write_buf
);
1038 ret
= smsc95xx_write_reg(dev
, FLOW
, 0);
1042 ret
= smsc95xx_write_reg(dev
, AFC_CFG
, AFC_CFG_DEFAULT
);
1046 /* Don't need mac_cr_lock during initialisation */
1047 ret
= smsc95xx_read_reg(dev
, MAC_CR
, &pdata
->mac_cr
);
1053 ret
= smsc95xx_write_reg(dev
, VLAN1
, (u32
)ETH_P_8021Q
);
1057 /* Enable or disable checksum offload engines */
1058 ret
= smsc95xx_set_features(dev
->net
, dev
->net
->features
);
1060 netdev_warn(dev
->net
, "Failed to set checksum offload features\n");
1064 smsc95xx_set_multicast(dev
->net
);
1066 ret
= smsc95xx_phy_initialize(dev
);
1068 netdev_warn(dev
->net
, "Failed to init PHY\n");
1072 ret
= smsc95xx_read_reg(dev
, INT_EP_CTL
, &read_buf
);
1076 /* enable PHY interrupts */
1077 read_buf
|= INT_EP_CTL_PHY_INT_
;
1079 ret
= smsc95xx_write_reg(dev
, INT_EP_CTL
, read_buf
);
1083 ret
= smsc95xx_start_tx_path(dev
);
1085 netdev_warn(dev
->net
, "Failed to start TX path\n");
1089 ret
= smsc95xx_start_rx_path(dev
, 0);
1091 netdev_warn(dev
->net
, "Failed to start RX path\n");
1095 netif_dbg(dev
, ifup
, dev
->net
, "smsc95xx_reset, return 0\n");
1099 static const struct net_device_ops smsc95xx_netdev_ops
= {
1100 .ndo_open
= usbnet_open
,
1101 .ndo_stop
= usbnet_stop
,
1102 .ndo_start_xmit
= usbnet_start_xmit
,
1103 .ndo_tx_timeout
= usbnet_tx_timeout
,
1104 .ndo_change_mtu
= usbnet_change_mtu
,
1105 .ndo_set_mac_address
= eth_mac_addr
,
1106 .ndo_validate_addr
= eth_validate_addr
,
1107 .ndo_do_ioctl
= smsc95xx_ioctl
,
1108 .ndo_set_rx_mode
= smsc95xx_set_multicast
,
1109 .ndo_set_features
= smsc95xx_set_features
,
1112 static int smsc95xx_bind(struct usbnet
*dev
, struct usb_interface
*intf
)
1114 struct smsc95xx_priv
*pdata
= NULL
;
1118 printk(KERN_INFO SMSC_CHIPNAME
" v" SMSC_DRIVER_VERSION
"\n");
1120 ret
= usbnet_get_endpoints(dev
, intf
);
1122 netdev_warn(dev
->net
, "usbnet_get_endpoints failed: %d\n", ret
);
1126 dev
->data
[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv
),
1129 pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1133 spin_lock_init(&pdata
->mac_cr_lock
);
1135 if (DEFAULT_TX_CSUM_ENABLE
)
1136 dev
->net
->features
|= NETIF_F_HW_CSUM
;
1137 if (DEFAULT_RX_CSUM_ENABLE
)
1138 dev
->net
->features
|= NETIF_F_RXCSUM
;
1140 dev
->net
->hw_features
= NETIF_F_HW_CSUM
| NETIF_F_RXCSUM
;
1142 smsc95xx_init_mac_address(dev
);
1144 /* Init all registers */
1145 ret
= smsc95xx_reset(dev
);
1147 /* detect device revision as different features may be available */
1148 ret
= smsc95xx_read_reg(dev
, ID_REV
, &val
);
1153 if ((val
== ID_REV_CHIP_ID_9500A_
) || (val
== ID_REV_CHIP_ID_9530_
) ||
1154 (val
== ID_REV_CHIP_ID_89530_
) || (val
== ID_REV_CHIP_ID_9730_
))
1155 pdata
->features
= (FEATURE_8_WAKEUP_FILTERS
|
1156 FEATURE_PHY_NLP_CROSSOVER
|
1157 FEATURE_REMOTE_WAKEUP
);
1158 else if (val
== ID_REV_CHIP_ID_9512_
)
1159 pdata
->features
= FEATURE_8_WAKEUP_FILTERS
;
1161 dev
->net
->netdev_ops
= &smsc95xx_netdev_ops
;
1162 dev
->net
->ethtool_ops
= &smsc95xx_ethtool_ops
;
1163 dev
->net
->flags
|= IFF_MULTICAST
;
1164 dev
->net
->hard_header_len
+= SMSC95XX_TX_OVERHEAD_CSUM
;
1165 dev
->hard_mtu
= dev
->net
->mtu
+ dev
->net
->hard_header_len
;
1169 static void smsc95xx_unbind(struct usbnet
*dev
, struct usb_interface
*intf
)
1171 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1173 netif_dbg(dev
, ifdown
, dev
->net
, "free pdata\n");
1180 static u32
smsc_crc(const u8
*buffer
, size_t len
, int filter
)
1182 u32 crc
= bitrev16(crc16(0xFFFF, buffer
, len
));
1183 return crc
<< ((filter
% 2) * 16);
1186 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet
*dev
, u16 mask
)
1188 struct mii_if_info
*mii
= &dev
->mii
;
1191 netdev_dbg(dev
->net
, "enabling PHY wakeup interrupts\n");
1194 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_INT_SRC
);
1198 /* enable interrupt source */
1199 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_INT_MASK
);
1205 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_INT_MASK
, ret
);
1210 static int smsc95xx_link_ok_nopm(struct usbnet
*dev
)
1212 struct mii_if_info
*mii
= &dev
->mii
;
1215 /* first, a dummy read, needed to latch some MII phys */
1216 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, MII_BMSR
);
1220 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, MII_BMSR
);
1224 return !!(ret
& BMSR_LSTATUS
);
1227 static int smsc95xx_enter_suspend0(struct usbnet
*dev
)
1229 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1233 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1237 val
&= (~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
));
1238 val
|= PM_CTL_SUS_MODE_0
;
1240 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1244 /* clear wol status */
1245 val
&= ~PM_CTL_WUPS_
;
1246 val
|= PM_CTL_WUPS_WOL_
;
1248 /* enable energy detection */
1249 if (pdata
->wolopts
& WAKE_PHY
)
1250 val
|= PM_CTL_WUPS_ED_
;
1252 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1256 /* read back PM_CTRL */
1257 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1261 pdata
->suspend_flags
|= SUSPEND_SUSPEND0
;
1266 static int smsc95xx_enter_suspend1(struct usbnet
*dev
)
1268 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1269 struct mii_if_info
*mii
= &dev
->mii
;
1273 /* reconfigure link pulse detection timing for
1274 * compatibility with non-standard link partners
1276 if (pdata
->features
& FEATURE_PHY_NLP_CROSSOVER
)
1277 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_EDPD_CONFIG
,
1278 PHY_EDPD_CONFIG_DEFAULT
);
1280 /* enable energy detect power-down mode */
1281 ret
= smsc95xx_mdio_read_nopm(dev
->net
, mii
->phy_id
, PHY_MODE_CTRL_STS
);
1285 ret
|= MODE_CTRL_STS_EDPWRDOWN_
;
1287 smsc95xx_mdio_write_nopm(dev
->net
, mii
->phy_id
, PHY_MODE_CTRL_STS
, ret
);
1289 /* enter SUSPEND1 mode */
1290 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1294 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1295 val
|= PM_CTL_SUS_MODE_1
;
1297 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1301 /* clear wol status, enable energy detection */
1302 val
&= ~PM_CTL_WUPS_
;
1303 val
|= (PM_CTL_WUPS_ED_
| PM_CTL_ED_EN_
);
1305 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1309 pdata
->suspend_flags
|= SUSPEND_SUSPEND1
;
1314 static int smsc95xx_enter_suspend2(struct usbnet
*dev
)
1316 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1320 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1324 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1325 val
|= PM_CTL_SUS_MODE_2
;
1327 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1331 pdata
->suspend_flags
|= SUSPEND_SUSPEND2
;
1336 static int smsc95xx_enter_suspend3(struct usbnet
*dev
)
1338 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1342 ret
= smsc95xx_read_reg_nopm(dev
, RX_FIFO_INF
, &val
);
1347 netdev_info(dev
->net
, "rx fifo not empty in autosuspend\n");
1351 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1355 val
&= ~(PM_CTL_SUS_MODE_
| PM_CTL_WUPS_
| PM_CTL_PHY_RST_
);
1356 val
|= PM_CTL_SUS_MODE_3
| PM_CTL_RES_CLR_WKP_STS
;
1358 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1362 /* clear wol status */
1363 val
&= ~PM_CTL_WUPS_
;
1364 val
|= PM_CTL_WUPS_WOL_
;
1366 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1370 pdata
->suspend_flags
|= SUSPEND_SUSPEND3
;
1375 static int smsc95xx_autosuspend(struct usbnet
*dev
, u32 link_up
)
1377 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1380 if (!netif_running(dev
->net
)) {
1381 /* interface is ifconfig down so fully power down hw */
1382 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND2\n");
1383 return smsc95xx_enter_suspend2(dev
);
1387 /* link is down so enter EDPD mode, but only if device can
1388 * reliably resume from it. This check should be redundant
1389 * as current FEATURE_REMOTE_WAKEUP parts also support
1390 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
1391 if (!(pdata
->features
& FEATURE_PHY_NLP_CROSSOVER
)) {
1392 netdev_warn(dev
->net
, "EDPD not supported\n");
1396 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND1\n");
1398 /* enable PHY wakeup events for if cable is attached */
1399 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1400 PHY_INT_MASK_ANEG_COMP_
);
1402 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1406 netdev_info(dev
->net
, "entering SUSPEND1 mode\n");
1407 return smsc95xx_enter_suspend1(dev
);
1410 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1411 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1412 PHY_INT_MASK_LINK_DOWN_
);
1414 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1418 netdev_dbg(dev
->net
, "autosuspend entering SUSPEND3\n");
1419 return smsc95xx_enter_suspend3(dev
);
1422 static int smsc95xx_suspend(struct usb_interface
*intf
, pm_message_t message
)
1424 struct usbnet
*dev
= usb_get_intfdata(intf
);
1425 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1429 ret
= usbnet_suspend(intf
, message
);
1431 netdev_warn(dev
->net
, "usbnet_suspend error\n");
1435 if (pdata
->suspend_flags
) {
1436 netdev_warn(dev
->net
, "error during last resume\n");
1437 pdata
->suspend_flags
= 0;
1440 /* determine if link is up using only _nopm functions */
1441 link_up
= smsc95xx_link_ok_nopm(dev
);
1443 if (message
.event
== PM_EVENT_AUTO_SUSPEND
&&
1444 (pdata
->features
& FEATURE_REMOTE_WAKEUP
)) {
1445 ret
= smsc95xx_autosuspend(dev
, link_up
);
1449 /* if we get this far we're not autosuspending */
1450 /* if no wol options set, or if link is down and we're not waking on
1451 * PHY activity, enter lowest power SUSPEND2 mode
1453 if (!(pdata
->wolopts
& SUPPORTED_WAKE
) ||
1454 !(link_up
|| (pdata
->wolopts
& WAKE_PHY
))) {
1455 netdev_info(dev
->net
, "entering SUSPEND2 mode\n");
1457 /* disable energy detect (link up) & wake up events */
1458 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1462 val
&= ~(WUCSR_MPEN_
| WUCSR_WAKE_EN_
);
1464 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1468 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1472 val
&= ~(PM_CTL_ED_EN_
| PM_CTL_WOL_EN_
);
1474 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1478 ret
= smsc95xx_enter_suspend2(dev
);
1482 if (pdata
->wolopts
& WAKE_PHY
) {
1483 ret
= smsc95xx_enable_phy_wakeup_interrupts(dev
,
1484 (PHY_INT_MASK_ANEG_COMP_
| PHY_INT_MASK_LINK_DOWN_
));
1486 netdev_warn(dev
->net
, "error enabling PHY wakeup ints\n");
1490 /* if link is down then configure EDPD and enter SUSPEND1,
1491 * otherwise enter SUSPEND0 below
1494 netdev_info(dev
->net
, "entering SUSPEND1 mode\n");
1495 ret
= smsc95xx_enter_suspend1(dev
);
1500 if (pdata
->wolopts
& (WAKE_BCAST
| WAKE_MCAST
| WAKE_ARP
| WAKE_UCAST
)) {
1501 u32
*filter_mask
= kzalloc(sizeof(u32
) * 32, GFP_KERNEL
);
1505 int wuff_filter_count
=
1506 (pdata
->features
& FEATURE_8_WAKEUP_FILTERS
) ?
1507 LAN9500A_WUFF_NUM
: LAN9500_WUFF_NUM
;
1511 netdev_warn(dev
->net
, "Unable to allocate filter_mask\n");
1516 memset(command
, 0, sizeof(command
));
1517 memset(offset
, 0, sizeof(offset
));
1518 memset(crc
, 0, sizeof(crc
));
1520 if (pdata
->wolopts
& WAKE_BCAST
) {
1521 const u8 bcast
[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1522 netdev_info(dev
->net
, "enabling broadcast detection\n");
1523 filter_mask
[filter
* 4] = 0x003F;
1524 filter_mask
[filter
* 4 + 1] = 0x00;
1525 filter_mask
[filter
* 4 + 2] = 0x00;
1526 filter_mask
[filter
* 4 + 3] = 0x00;
1527 command
[filter
/4] |= 0x05UL
<< ((filter
% 4) * 8);
1528 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1529 crc
[filter
/2] |= smsc_crc(bcast
, 6, filter
);
1533 if (pdata
->wolopts
& WAKE_MCAST
) {
1534 const u8 mcast
[] = {0x01, 0x00, 0x5E};
1535 netdev_info(dev
->net
, "enabling multicast detection\n");
1536 filter_mask
[filter
* 4] = 0x0007;
1537 filter_mask
[filter
* 4 + 1] = 0x00;
1538 filter_mask
[filter
* 4 + 2] = 0x00;
1539 filter_mask
[filter
* 4 + 3] = 0x00;
1540 command
[filter
/4] |= 0x09UL
<< ((filter
% 4) * 8);
1541 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1542 crc
[filter
/2] |= smsc_crc(mcast
, 3, filter
);
1546 if (pdata
->wolopts
& WAKE_ARP
) {
1547 const u8 arp
[] = {0x08, 0x06};
1548 netdev_info(dev
->net
, "enabling ARP detection\n");
1549 filter_mask
[filter
* 4] = 0x0003;
1550 filter_mask
[filter
* 4 + 1] = 0x00;
1551 filter_mask
[filter
* 4 + 2] = 0x00;
1552 filter_mask
[filter
* 4 + 3] = 0x00;
1553 command
[filter
/4] |= 0x05UL
<< ((filter
% 4) * 8);
1554 offset
[filter
/4] |= 0x0C << ((filter
% 4) * 8);
1555 crc
[filter
/2] |= smsc_crc(arp
, 2, filter
);
1559 if (pdata
->wolopts
& WAKE_UCAST
) {
1560 netdev_info(dev
->net
, "enabling unicast detection\n");
1561 filter_mask
[filter
* 4] = 0x003F;
1562 filter_mask
[filter
* 4 + 1] = 0x00;
1563 filter_mask
[filter
* 4 + 2] = 0x00;
1564 filter_mask
[filter
* 4 + 3] = 0x00;
1565 command
[filter
/4] |= 0x01UL
<< ((filter
% 4) * 8);
1566 offset
[filter
/4] |= 0x00 << ((filter
% 4) * 8);
1567 crc
[filter
/2] |= smsc_crc(dev
->net
->dev_addr
, ETH_ALEN
, filter
);
1571 for (i
= 0; i
< (wuff_filter_count
* 4); i
++) {
1572 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, filter_mask
[i
]);
1580 for (i
= 0; i
< (wuff_filter_count
/ 4); i
++) {
1581 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, command
[i
]);
1586 for (i
= 0; i
< (wuff_filter_count
/ 4); i
++) {
1587 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, offset
[i
]);
1592 for (i
= 0; i
< (wuff_filter_count
/ 2); i
++) {
1593 ret
= smsc95xx_write_reg_nopm(dev
, WUFF
, crc
[i
]);
1598 /* clear any pending pattern match packet status */
1599 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1605 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1610 if (pdata
->wolopts
& WAKE_MAGIC
) {
1611 /* clear any pending magic packet status */
1612 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1618 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1623 /* enable/disable wakeup sources */
1624 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1628 if (pdata
->wolopts
& (WAKE_BCAST
| WAKE_MCAST
| WAKE_ARP
| WAKE_UCAST
)) {
1629 netdev_info(dev
->net
, "enabling pattern match wakeup\n");
1630 val
|= WUCSR_WAKE_EN_
;
1632 netdev_info(dev
->net
, "disabling pattern match wakeup\n");
1633 val
&= ~WUCSR_WAKE_EN_
;
1636 if (pdata
->wolopts
& WAKE_MAGIC
) {
1637 netdev_info(dev
->net
, "enabling magic packet wakeup\n");
1640 netdev_info(dev
->net
, "disabling magic packet wakeup\n");
1641 val
&= ~WUCSR_MPEN_
;
1644 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1648 /* enable wol wakeup source */
1649 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1653 val
|= PM_CTL_WOL_EN_
;
1655 /* phy energy detect wakeup source */
1656 if (pdata
->wolopts
& WAKE_PHY
)
1657 val
|= PM_CTL_ED_EN_
;
1659 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1663 /* enable receiver to enable frame reception */
1664 smsc95xx_start_rx_path(dev
, 1);
1666 /* some wol options are enabled, so enter SUSPEND0 */
1667 netdev_info(dev
->net
, "entering SUSPEND0 mode\n");
1668 ret
= smsc95xx_enter_suspend0(dev
);
1672 * TODO: resume() might need to handle the suspend failure
1675 if (ret
&& PMSG_IS_AUTO(message
))
1676 usbnet_resume(intf
);
1680 static int smsc95xx_resume(struct usb_interface
*intf
)
1682 struct usbnet
*dev
= usb_get_intfdata(intf
);
1683 struct smsc95xx_priv
*pdata
;
1689 pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1690 suspend_flags
= pdata
->suspend_flags
;
1692 netdev_dbg(dev
->net
, "resume suspend_flags=0x%02x\n", suspend_flags
);
1694 /* do this first to ensure it's cleared even in error case */
1695 pdata
->suspend_flags
= 0;
1697 if (suspend_flags
& SUSPEND_ALLMODES
) {
1698 /* clear wake-up sources */
1699 ret
= smsc95xx_read_reg_nopm(dev
, WUCSR
, &val
);
1703 val
&= ~(WUCSR_WAKE_EN_
| WUCSR_MPEN_
);
1705 ret
= smsc95xx_write_reg_nopm(dev
, WUCSR
, val
);
1709 /* clear wake-up status */
1710 ret
= smsc95xx_read_reg_nopm(dev
, PM_CTRL
, &val
);
1714 val
&= ~PM_CTL_WOL_EN_
;
1715 val
|= PM_CTL_WUPS_
;
1717 ret
= smsc95xx_write_reg_nopm(dev
, PM_CTRL
, val
);
1722 ret
= usbnet_resume(intf
);
1724 netdev_warn(dev
->net
, "usbnet_resume error\n");
1729 static int smsc95xx_reset_resume(struct usb_interface
*intf
)
1731 struct usbnet
*dev
= usb_get_intfdata(intf
);
1734 ret
= smsc95xx_reset(dev
);
1738 return smsc95xx_resume(intf
);
1741 static void smsc95xx_rx_csum_offload(struct sk_buff
*skb
)
1743 skb
->csum
= *(u16
*)(skb_tail_pointer(skb
) - 2);
1744 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1745 skb_trim(skb
, skb
->len
- 2);
1748 static int smsc95xx_rx_fixup(struct usbnet
*dev
, struct sk_buff
*skb
)
1750 /* This check is no longer done by usbnet */
1751 if (skb
->len
< dev
->net
->hard_header_len
)
1754 while (skb
->len
> 0) {
1755 u32 header
, align_count
;
1756 struct sk_buff
*ax_skb
;
1757 unsigned char *packet
;
1760 memcpy(&header
, skb
->data
, sizeof(header
));
1761 le32_to_cpus(&header
);
1762 skb_pull(skb
, 4 + NET_IP_ALIGN
);
1765 /* get the packet length */
1766 size
= (u16
)((header
& RX_STS_FL_
) >> 16);
1767 align_count
= (4 - ((size
+ NET_IP_ALIGN
) % 4)) % 4;
1769 if (unlikely(header
& RX_STS_ES_
)) {
1770 netif_dbg(dev
, rx_err
, dev
->net
,
1771 "Error header=0x%08x\n", header
);
1772 dev
->net
->stats
.rx_errors
++;
1773 dev
->net
->stats
.rx_dropped
++;
1775 if (header
& RX_STS_CRC_
) {
1776 dev
->net
->stats
.rx_crc_errors
++;
1778 if (header
& (RX_STS_TL_
| RX_STS_RF_
))
1779 dev
->net
->stats
.rx_frame_errors
++;
1781 if ((header
& RX_STS_LE_
) &&
1782 (!(header
& RX_STS_FT_
)))
1783 dev
->net
->stats
.rx_length_errors
++;
1786 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1787 if (unlikely(size
> (ETH_FRAME_LEN
+ 12))) {
1788 netif_dbg(dev
, rx_err
, dev
->net
,
1789 "size err header=0x%08x\n", header
);
1793 /* last frame in this batch */
1794 if (skb
->len
== size
) {
1795 if (dev
->net
->features
& NETIF_F_RXCSUM
)
1796 smsc95xx_rx_csum_offload(skb
);
1797 skb_trim(skb
, skb
->len
- 4); /* remove fcs */
1798 skb
->truesize
= size
+ sizeof(struct sk_buff
);
1803 ax_skb
= skb_clone(skb
, GFP_ATOMIC
);
1804 if (unlikely(!ax_skb
)) {
1805 netdev_warn(dev
->net
, "Error allocating skb\n");
1810 ax_skb
->data
= packet
;
1811 skb_set_tail_pointer(ax_skb
, size
);
1813 if (dev
->net
->features
& NETIF_F_RXCSUM
)
1814 smsc95xx_rx_csum_offload(ax_skb
);
1815 skb_trim(ax_skb
, ax_skb
->len
- 4); /* remove fcs */
1816 ax_skb
->truesize
= size
+ sizeof(struct sk_buff
);
1818 usbnet_skb_return(dev
, ax_skb
);
1821 skb_pull(skb
, size
);
1823 /* padding bytes before the next frame starts */
1825 skb_pull(skb
, align_count
);
1831 static u32
smsc95xx_calc_csum_preamble(struct sk_buff
*skb
)
1833 u16 low_16
= (u16
)skb_checksum_start_offset(skb
);
1834 u16 high_16
= low_16
+ skb
->csum_offset
;
1835 return (high_16
<< 16) | low_16
;
1838 static struct sk_buff
*smsc95xx_tx_fixup(struct usbnet
*dev
,
1839 struct sk_buff
*skb
, gfp_t flags
)
1841 bool csum
= skb
->ip_summed
== CHECKSUM_PARTIAL
;
1842 int overhead
= csum
? SMSC95XX_TX_OVERHEAD_CSUM
: SMSC95XX_TX_OVERHEAD
;
1843 u32 tx_cmd_a
, tx_cmd_b
;
1845 /* We do not advertise SG, so skbs should be already linearized */
1846 BUG_ON(skb_shinfo(skb
)->nr_frags
);
1848 if (skb_headroom(skb
) < overhead
) {
1849 struct sk_buff
*skb2
= skb_copy_expand(skb
,
1850 overhead
, 0, flags
);
1851 dev_kfree_skb_any(skb
);
1858 if (skb
->len
<= 45) {
1859 /* workaround - hardware tx checksum does not work
1860 * properly with extremely small packets */
1861 long csstart
= skb_checksum_start_offset(skb
);
1862 __wsum calc
= csum_partial(skb
->data
+ csstart
,
1863 skb
->len
- csstart
, 0);
1864 *((__sum16
*)(skb
->data
+ csstart
1865 + skb
->csum_offset
)) = csum_fold(calc
);
1869 u32 csum_preamble
= smsc95xx_calc_csum_preamble(skb
);
1871 cpu_to_le32s(&csum_preamble
);
1872 memcpy(skb
->data
, &csum_preamble
, 4);
1877 tx_cmd_b
= (u32
)(skb
->len
- 4);
1879 tx_cmd_b
|= TX_CMD_B_CSUM_ENABLE
;
1880 cpu_to_le32s(&tx_cmd_b
);
1881 memcpy(skb
->data
, &tx_cmd_b
, 4);
1884 tx_cmd_a
= (u32
)(skb
->len
- 8) | TX_CMD_A_FIRST_SEG_
|
1886 cpu_to_le32s(&tx_cmd_a
);
1887 memcpy(skb
->data
, &tx_cmd_a
, 4);
1892 static int smsc95xx_manage_power(struct usbnet
*dev
, int on
)
1894 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1896 dev
->intf
->needs_remote_wakeup
= on
;
1898 if (pdata
->features
& FEATURE_REMOTE_WAKEUP
)
1901 /* this chip revision isn't capable of remote wakeup */
1902 netdev_info(dev
->net
, "hardware isn't capable of remote wakeup\n");
1905 usb_autopm_get_interface_no_resume(dev
->intf
);
1907 usb_autopm_put_interface(dev
->intf
);
1912 static const struct driver_info smsc95xx_info
= {
1913 .description
= "smsc95xx USB 2.0 Ethernet",
1914 .bind
= smsc95xx_bind
,
1915 .unbind
= smsc95xx_unbind
,
1916 .link_reset
= smsc95xx_link_reset
,
1917 .reset
= smsc95xx_reset
,
1918 .rx_fixup
= smsc95xx_rx_fixup
,
1919 .tx_fixup
= smsc95xx_tx_fixup
,
1920 .status
= smsc95xx_status
,
1921 .manage_power
= smsc95xx_manage_power
,
1922 .flags
= FLAG_ETHER
| FLAG_SEND_ZLP
| FLAG_LINK_INTR
,
1925 static const struct usb_device_id products
[] = {
1927 /* SMSC9500 USB Ethernet Device */
1928 USB_DEVICE(0x0424, 0x9500),
1929 .driver_info
= (unsigned long) &smsc95xx_info
,
1932 /* SMSC9505 USB Ethernet Device */
1933 USB_DEVICE(0x0424, 0x9505),
1934 .driver_info
= (unsigned long) &smsc95xx_info
,
1937 /* SMSC9500A USB Ethernet Device */
1938 USB_DEVICE(0x0424, 0x9E00),
1939 .driver_info
= (unsigned long) &smsc95xx_info
,
1942 /* SMSC9505A USB Ethernet Device */
1943 USB_DEVICE(0x0424, 0x9E01),
1944 .driver_info
= (unsigned long) &smsc95xx_info
,
1947 /* SMSC9512/9514 USB Hub & Ethernet Device */
1948 USB_DEVICE(0x0424, 0xec00),
1949 .driver_info
= (unsigned long) &smsc95xx_info
,
1952 /* SMSC9500 USB Ethernet Device (SAL10) */
1953 USB_DEVICE(0x0424, 0x9900),
1954 .driver_info
= (unsigned long) &smsc95xx_info
,
1957 /* SMSC9505 USB Ethernet Device (SAL10) */
1958 USB_DEVICE(0x0424, 0x9901),
1959 .driver_info
= (unsigned long) &smsc95xx_info
,
1962 /* SMSC9500A USB Ethernet Device (SAL10) */
1963 USB_DEVICE(0x0424, 0x9902),
1964 .driver_info
= (unsigned long) &smsc95xx_info
,
1967 /* SMSC9505A USB Ethernet Device (SAL10) */
1968 USB_DEVICE(0x0424, 0x9903),
1969 .driver_info
= (unsigned long) &smsc95xx_info
,
1972 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1973 USB_DEVICE(0x0424, 0x9904),
1974 .driver_info
= (unsigned long) &smsc95xx_info
,
1977 /* SMSC9500A USB Ethernet Device (HAL) */
1978 USB_DEVICE(0x0424, 0x9905),
1979 .driver_info
= (unsigned long) &smsc95xx_info
,
1982 /* SMSC9505A USB Ethernet Device (HAL) */
1983 USB_DEVICE(0x0424, 0x9906),
1984 .driver_info
= (unsigned long) &smsc95xx_info
,
1987 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1988 USB_DEVICE(0x0424, 0x9907),
1989 .driver_info
= (unsigned long) &smsc95xx_info
,
1992 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1993 USB_DEVICE(0x0424, 0x9908),
1994 .driver_info
= (unsigned long) &smsc95xx_info
,
1997 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
1998 USB_DEVICE(0x0424, 0x9909),
1999 .driver_info
= (unsigned long) &smsc95xx_info
,
2002 /* SMSC LAN9530 USB Ethernet Device */
2003 USB_DEVICE(0x0424, 0x9530),
2004 .driver_info
= (unsigned long) &smsc95xx_info
,
2007 /* SMSC LAN9730 USB Ethernet Device */
2008 USB_DEVICE(0x0424, 0x9730),
2009 .driver_info
= (unsigned long) &smsc95xx_info
,
2012 /* SMSC LAN89530 USB Ethernet Device */
2013 USB_DEVICE(0x0424, 0x9E08),
2014 .driver_info
= (unsigned long) &smsc95xx_info
,
2018 MODULE_DEVICE_TABLE(usb
, products
);
2020 static struct usb_driver smsc95xx_driver
= {
2022 .id_table
= products
,
2023 .probe
= usbnet_probe
,
2024 .suspend
= smsc95xx_suspend
,
2025 .resume
= smsc95xx_resume
,
2026 .reset_resume
= smsc95xx_reset_resume
,
2027 .disconnect
= usbnet_disconnect
,
2028 .disable_hub_initiated_lpm
= 1,
2029 .supports_autosuspend
= 1,
2032 module_usb_driver(smsc95xx_driver
);
2034 MODULE_AUTHOR("Nancy Lin");
2035 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2036 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2037 MODULE_LICENSE("GPL");