1 /***************************************************************************
3 * Copyright (C) 2007-2010 SMSC
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/kmod.h>
23 #include <linux/init.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/mii.h>
28 #include <linux/usb.h>
29 #include <linux/bitrev.h>
30 #include <linux/crc16.h>
31 #include <linux/crc32.h>
32 #include <linux/usb/usbnet.h>
33 #include <linux/slab.h>
36 #define SMSC_CHIPNAME "smsc75xx"
37 #define SMSC_DRIVER_VERSION "1.0.0"
38 #define HS_USB_PKT_SIZE (512)
39 #define FS_USB_PKT_SIZE (64)
40 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
41 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
42 #define DEFAULT_BULK_IN_DELAY (0x00002000)
43 #define MAX_SINGLE_PACKET_SIZE (9000)
44 #define LAN75XX_EEPROM_MAGIC (0x7500)
45 #define EEPROM_MAC_OFFSET (0x01)
46 #define DEFAULT_TX_CSUM_ENABLE (true)
47 #define DEFAULT_RX_CSUM_ENABLE (true)
48 #define DEFAULT_TSO_ENABLE (true)
49 #define SMSC75XX_INTERNAL_PHY_ID (1)
50 #define SMSC75XX_TX_OVERHEAD (8)
51 #define MAX_RX_FIFO_SIZE (20 * 1024)
52 #define MAX_TX_FIFO_SIZE (12 * 1024)
53 #define USB_VENDOR_ID_SMSC (0x0424)
54 #define USB_PRODUCT_ID_LAN7500 (0x7500)
55 #define USB_PRODUCT_ID_LAN7505 (0x7505)
57 #define SUPPORTED_WAKE (WAKE_UCAST | WAKE_BCAST | \
58 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
60 #define check_warn(ret, fmt, args...) \
61 ({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); })
63 #define check_warn_return(ret, fmt, args...) \
64 ({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); return ret; } })
66 #define check_warn_goto_done(ret, fmt, args...) \
67 ({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); goto done; } })
69 struct smsc75xx_priv
{
73 u32 multicast_hash_table
[DP_SEL_VHF_HASH_LEN
];
74 struct mutex dataport_mutex
;
75 spinlock_t rfe_ctl_lock
;
76 struct work_struct set_multicast
;
80 struct usb_ctrlrequest req
;
84 static bool turbo_mode
= true;
85 module_param(turbo_mode
, bool, 0644);
86 MODULE_PARM_DESC(turbo_mode
, "Enable multiple frames per Rx transaction");
88 static int __must_check
__smsc75xx_read_reg(struct usbnet
*dev
, u32 index
,
93 int (*fn
)(struct usbnet
*, u8
, u8
, u16
, u16
, void *, u16
);
100 fn
= usbnet_read_cmd_nopm
;
102 ret
= fn(dev
, USB_VENDOR_REQUEST_READ_REGISTER
, USB_DIR_IN
103 | USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
105 if (unlikely(ret
< 0))
106 netdev_warn(dev
->net
, "Failed to read reg index 0x%08x: %d\n",
115 static int __must_check
__smsc75xx_write_reg(struct usbnet
*dev
, u32 index
,
120 int (*fn
)(struct usbnet
*, u8
, u8
, u16
, u16
, const void *, u16
);
125 fn
= usbnet_write_cmd
;
127 fn
= usbnet_write_cmd_nopm
;
132 ret
= fn(dev
, USB_VENDOR_REQUEST_WRITE_REGISTER
, USB_DIR_OUT
133 | USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
135 if (unlikely(ret
< 0))
136 netdev_warn(dev
->net
, "Failed to write reg index 0x%08x: %d\n",
142 static int __must_check
smsc75xx_read_reg_nopm(struct usbnet
*dev
, u32 index
,
145 return __smsc75xx_read_reg(dev
, index
, data
, 1);
148 static int __must_check
smsc75xx_write_reg_nopm(struct usbnet
*dev
, u32 index
,
151 return __smsc75xx_write_reg(dev
, index
, data
, 1);
154 static int __must_check
smsc75xx_read_reg(struct usbnet
*dev
, u32 index
,
157 return __smsc75xx_read_reg(dev
, index
, data
, 0);
160 static int __must_check
smsc75xx_write_reg(struct usbnet
*dev
, u32 index
,
163 return __smsc75xx_write_reg(dev
, index
, data
, 0);
166 static int smsc75xx_set_feature(struct usbnet
*dev
, u32 feature
)
168 if (WARN_ON_ONCE(!dev
))
171 return usbnet_write_cmd_nopm(dev
, USB_REQ_SET_FEATURE
,
172 USB_DIR_OUT
| USB_RECIP_DEVICE
,
173 feature
, 0, NULL
, 0);
176 static int smsc75xx_clear_feature(struct usbnet
*dev
, u32 feature
)
178 if (WARN_ON_ONCE(!dev
))
181 return usbnet_write_cmd_nopm(dev
, USB_REQ_CLEAR_FEATURE
,
182 USB_DIR_OUT
| USB_RECIP_DEVICE
,
183 feature
, 0, NULL
, 0);
186 /* Loop until the read is completed with timeout
187 * called with phy_mutex held */
188 static int smsc75xx_phy_wait_not_busy(struct usbnet
*dev
)
190 unsigned long start_time
= jiffies
;
195 ret
= smsc75xx_read_reg(dev
, MII_ACCESS
, &val
);
196 check_warn_return(ret
, "Error reading MII_ACCESS\n");
198 if (!(val
& MII_ACCESS_BUSY
))
200 } while (!time_after(jiffies
, start_time
+ HZ
));
205 static int smsc75xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
)
207 struct usbnet
*dev
= netdev_priv(netdev
);
211 mutex_lock(&dev
->phy_mutex
);
213 /* confirm MII not busy */
214 ret
= smsc75xx_phy_wait_not_busy(dev
);
215 check_warn_goto_done(ret
, "MII is busy in smsc75xx_mdio_read\n");
217 /* set the address, index & direction (read from PHY) */
218 phy_id
&= dev
->mii
.phy_id_mask
;
219 idx
&= dev
->mii
.reg_num_mask
;
220 addr
= ((phy_id
<< MII_ACCESS_PHY_ADDR_SHIFT
) & MII_ACCESS_PHY_ADDR
)
221 | ((idx
<< MII_ACCESS_REG_ADDR_SHIFT
) & MII_ACCESS_REG_ADDR
)
222 | MII_ACCESS_READ
| MII_ACCESS_BUSY
;
223 ret
= smsc75xx_write_reg(dev
, MII_ACCESS
, addr
);
224 check_warn_goto_done(ret
, "Error writing MII_ACCESS\n");
226 ret
= smsc75xx_phy_wait_not_busy(dev
);
227 check_warn_goto_done(ret
, "Timed out reading MII reg %02X\n", idx
);
229 ret
= smsc75xx_read_reg(dev
, MII_DATA
, &val
);
230 check_warn_goto_done(ret
, "Error reading MII_DATA\n");
232 ret
= (u16
)(val
& 0xFFFF);
235 mutex_unlock(&dev
->phy_mutex
);
239 static void smsc75xx_mdio_write(struct net_device
*netdev
, int phy_id
, int idx
,
242 struct usbnet
*dev
= netdev_priv(netdev
);
246 mutex_lock(&dev
->phy_mutex
);
248 /* confirm MII not busy */
249 ret
= smsc75xx_phy_wait_not_busy(dev
);
250 check_warn_goto_done(ret
, "MII is busy in smsc75xx_mdio_write\n");
253 ret
= smsc75xx_write_reg(dev
, MII_DATA
, val
);
254 check_warn_goto_done(ret
, "Error writing MII_DATA\n");
256 /* set the address, index & direction (write to PHY) */
257 phy_id
&= dev
->mii
.phy_id_mask
;
258 idx
&= dev
->mii
.reg_num_mask
;
259 addr
= ((phy_id
<< MII_ACCESS_PHY_ADDR_SHIFT
) & MII_ACCESS_PHY_ADDR
)
260 | ((idx
<< MII_ACCESS_REG_ADDR_SHIFT
) & MII_ACCESS_REG_ADDR
)
261 | MII_ACCESS_WRITE
| MII_ACCESS_BUSY
;
262 ret
= smsc75xx_write_reg(dev
, MII_ACCESS
, addr
);
263 check_warn_goto_done(ret
, "Error writing MII_ACCESS\n");
265 ret
= smsc75xx_phy_wait_not_busy(dev
);
266 check_warn_goto_done(ret
, "Timed out writing MII reg %02X\n", idx
);
269 mutex_unlock(&dev
->phy_mutex
);
272 static int smsc75xx_wait_eeprom(struct usbnet
*dev
)
274 unsigned long start_time
= jiffies
;
279 ret
= smsc75xx_read_reg(dev
, E2P_CMD
, &val
);
280 check_warn_return(ret
, "Error reading E2P_CMD\n");
282 if (!(val
& E2P_CMD_BUSY
) || (val
& E2P_CMD_TIMEOUT
))
285 } while (!time_after(jiffies
, start_time
+ HZ
));
287 if (val
& (E2P_CMD_TIMEOUT
| E2P_CMD_BUSY
)) {
288 netdev_warn(dev
->net
, "EEPROM read operation timeout\n");
295 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet
*dev
)
297 unsigned long start_time
= jiffies
;
302 ret
= smsc75xx_read_reg(dev
, E2P_CMD
, &val
);
303 check_warn_return(ret
, "Error reading E2P_CMD\n");
305 if (!(val
& E2P_CMD_BUSY
))
309 } while (!time_after(jiffies
, start_time
+ HZ
));
311 netdev_warn(dev
->net
, "EEPROM is busy\n");
315 static int smsc75xx_read_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
324 ret
= smsc75xx_eeprom_confirm_not_busy(dev
);
328 for (i
= 0; i
< length
; i
++) {
329 val
= E2P_CMD_BUSY
| E2P_CMD_READ
| (offset
& E2P_CMD_ADDR
);
330 ret
= smsc75xx_write_reg(dev
, E2P_CMD
, val
);
331 check_warn_return(ret
, "Error writing E2P_CMD\n");
333 ret
= smsc75xx_wait_eeprom(dev
);
337 ret
= smsc75xx_read_reg(dev
, E2P_DATA
, &val
);
338 check_warn_return(ret
, "Error reading E2P_DATA\n");
340 data
[i
] = val
& 0xFF;
347 static int smsc75xx_write_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
356 ret
= smsc75xx_eeprom_confirm_not_busy(dev
);
360 /* Issue write/erase enable command */
361 val
= E2P_CMD_BUSY
| E2P_CMD_EWEN
;
362 ret
= smsc75xx_write_reg(dev
, E2P_CMD
, val
);
363 check_warn_return(ret
, "Error writing E2P_CMD\n");
365 ret
= smsc75xx_wait_eeprom(dev
);
369 for (i
= 0; i
< length
; i
++) {
371 /* Fill data register */
373 ret
= smsc75xx_write_reg(dev
, E2P_DATA
, val
);
374 check_warn_return(ret
, "Error writing E2P_DATA\n");
376 /* Send "write" command */
377 val
= E2P_CMD_BUSY
| E2P_CMD_WRITE
| (offset
& E2P_CMD_ADDR
);
378 ret
= smsc75xx_write_reg(dev
, E2P_CMD
, val
);
379 check_warn_return(ret
, "Error writing E2P_CMD\n");
381 ret
= smsc75xx_wait_eeprom(dev
);
391 static int smsc75xx_dataport_wait_not_busy(struct usbnet
*dev
)
395 for (i
= 0; i
< 100; i
++) {
397 ret
= smsc75xx_read_reg(dev
, DP_SEL
, &dp_sel
);
398 check_warn_return(ret
, "Error reading DP_SEL\n");
400 if (dp_sel
& DP_SEL_DPRDY
)
406 netdev_warn(dev
->net
, "smsc75xx_dataport_wait_not_busy timed out\n");
411 static int smsc75xx_dataport_write(struct usbnet
*dev
, u32 ram_select
, u32 addr
,
412 u32 length
, u32
*buf
)
414 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
418 mutex_lock(&pdata
->dataport_mutex
);
420 ret
= smsc75xx_dataport_wait_not_busy(dev
);
421 check_warn_goto_done(ret
, "smsc75xx_dataport_write busy on entry\n");
423 ret
= smsc75xx_read_reg(dev
, DP_SEL
, &dp_sel
);
424 check_warn_goto_done(ret
, "Error reading DP_SEL\n");
426 dp_sel
&= ~DP_SEL_RSEL
;
427 dp_sel
|= ram_select
;
428 ret
= smsc75xx_write_reg(dev
, DP_SEL
, dp_sel
);
429 check_warn_goto_done(ret
, "Error writing DP_SEL\n");
431 for (i
= 0; i
< length
; i
++) {
432 ret
= smsc75xx_write_reg(dev
, DP_ADDR
, addr
+ i
);
433 check_warn_goto_done(ret
, "Error writing DP_ADDR\n");
435 ret
= smsc75xx_write_reg(dev
, DP_DATA
, buf
[i
]);
436 check_warn_goto_done(ret
, "Error writing DP_DATA\n");
438 ret
= smsc75xx_write_reg(dev
, DP_CMD
, DP_CMD_WRITE
);
439 check_warn_goto_done(ret
, "Error writing DP_CMD\n");
441 ret
= smsc75xx_dataport_wait_not_busy(dev
);
442 check_warn_goto_done(ret
, "smsc75xx_dataport_write timeout\n");
446 mutex_unlock(&pdata
->dataport_mutex
);
450 /* returns hash bit number for given MAC address */
451 static u32
smsc75xx_hash(char addr
[ETH_ALEN
])
453 return (ether_crc(ETH_ALEN
, addr
) >> 23) & 0x1ff;
456 static void smsc75xx_deferred_multicast_write(struct work_struct
*param
)
458 struct smsc75xx_priv
*pdata
=
459 container_of(param
, struct smsc75xx_priv
, set_multicast
);
460 struct usbnet
*dev
= pdata
->dev
;
463 netif_dbg(dev
, drv
, dev
->net
, "deferred multicast write 0x%08x\n",
466 smsc75xx_dataport_write(dev
, DP_SEL_VHF
, DP_SEL_VHF_VLAN_LEN
,
467 DP_SEL_VHF_HASH_LEN
, pdata
->multicast_hash_table
);
469 ret
= smsc75xx_write_reg(dev
, RFE_CTL
, pdata
->rfe_ctl
);
470 check_warn(ret
, "Error writing RFE_CRL\n");
473 static void smsc75xx_set_multicast(struct net_device
*netdev
)
475 struct usbnet
*dev
= netdev_priv(netdev
);
476 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
480 spin_lock_irqsave(&pdata
->rfe_ctl_lock
, flags
);
483 ~(RFE_CTL_AU
| RFE_CTL_AM
| RFE_CTL_DPF
| RFE_CTL_MHF
);
484 pdata
->rfe_ctl
|= RFE_CTL_AB
;
486 for (i
= 0; i
< DP_SEL_VHF_HASH_LEN
; i
++)
487 pdata
->multicast_hash_table
[i
] = 0;
489 if (dev
->net
->flags
& IFF_PROMISC
) {
490 netif_dbg(dev
, drv
, dev
->net
, "promiscuous mode enabled\n");
491 pdata
->rfe_ctl
|= RFE_CTL_AM
| RFE_CTL_AU
;
492 } else if (dev
->net
->flags
& IFF_ALLMULTI
) {
493 netif_dbg(dev
, drv
, dev
->net
, "receive all multicast enabled\n");
494 pdata
->rfe_ctl
|= RFE_CTL_AM
| RFE_CTL_DPF
;
495 } else if (!netdev_mc_empty(dev
->net
)) {
496 struct netdev_hw_addr
*ha
;
498 netif_dbg(dev
, drv
, dev
->net
, "receive multicast hash filter\n");
500 pdata
->rfe_ctl
|= RFE_CTL_MHF
| RFE_CTL_DPF
;
502 netdev_for_each_mc_addr(ha
, netdev
) {
503 u32 bitnum
= smsc75xx_hash(ha
->addr
);
504 pdata
->multicast_hash_table
[bitnum
/ 32] |=
505 (1 << (bitnum
% 32));
508 netif_dbg(dev
, drv
, dev
->net
, "receive own packets only\n");
509 pdata
->rfe_ctl
|= RFE_CTL_DPF
;
512 spin_unlock_irqrestore(&pdata
->rfe_ctl_lock
, flags
);
514 /* defer register writes to a sleepable context */
515 schedule_work(&pdata
->set_multicast
);
518 static int smsc75xx_update_flowcontrol(struct usbnet
*dev
, u8 duplex
,
519 u16 lcladv
, u16 rmtadv
)
521 u32 flow
= 0, fct_flow
= 0;
524 if (duplex
== DUPLEX_FULL
) {
525 u8 cap
= mii_resolve_flowctrl_fdx(lcladv
, rmtadv
);
527 if (cap
& FLOW_CTRL_TX
) {
528 flow
= (FLOW_TX_FCEN
| 0xFFFF);
529 /* set fct_flow thresholds to 20% and 80% */
530 fct_flow
= (8 << 8) | 32;
533 if (cap
& FLOW_CTRL_RX
)
534 flow
|= FLOW_RX_FCEN
;
536 netif_dbg(dev
, link
, dev
->net
, "rx pause %s, tx pause %s\n",
537 (cap
& FLOW_CTRL_RX
? "enabled" : "disabled"),
538 (cap
& FLOW_CTRL_TX
? "enabled" : "disabled"));
540 netif_dbg(dev
, link
, dev
->net
, "half duplex\n");
543 ret
= smsc75xx_write_reg(dev
, FLOW
, flow
);
544 check_warn_return(ret
, "Error writing FLOW\n");
546 ret
= smsc75xx_write_reg(dev
, FCT_FLOW
, fct_flow
);
547 check_warn_return(ret
, "Error writing FCT_FLOW\n");
552 static int smsc75xx_link_reset(struct usbnet
*dev
)
554 struct mii_if_info
*mii
= &dev
->mii
;
555 struct ethtool_cmd ecmd
= { .cmd
= ETHTOOL_GSET
};
559 /* write to clear phy interrupt status */
560 smsc75xx_mdio_write(dev
->net
, mii
->phy_id
, PHY_INT_SRC
,
561 PHY_INT_SRC_CLEAR_ALL
);
563 ret
= smsc75xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL
);
564 check_warn_return(ret
, "Error writing INT_STS\n");
566 mii_check_media(mii
, 1, 1);
567 mii_ethtool_gset(&dev
->mii
, &ecmd
);
568 lcladv
= smsc75xx_mdio_read(dev
->net
, mii
->phy_id
, MII_ADVERTISE
);
569 rmtadv
= smsc75xx_mdio_read(dev
->net
, mii
->phy_id
, MII_LPA
);
571 netif_dbg(dev
, link
, dev
->net
, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
572 ethtool_cmd_speed(&ecmd
), ecmd
.duplex
, lcladv
, rmtadv
);
574 return smsc75xx_update_flowcontrol(dev
, ecmd
.duplex
, lcladv
, rmtadv
);
577 static void smsc75xx_status(struct usbnet
*dev
, struct urb
*urb
)
581 if (urb
->actual_length
!= 4) {
582 netdev_warn(dev
->net
, "unexpected urb length %d\n",
587 memcpy(&intdata
, urb
->transfer_buffer
, 4);
588 le32_to_cpus(&intdata
);
590 netif_dbg(dev
, link
, dev
->net
, "intdata: 0x%08X\n", intdata
);
592 if (intdata
& INT_ENP_PHY_INT
)
593 usbnet_defer_kevent(dev
, EVENT_LINK_RESET
);
595 netdev_warn(dev
->net
, "unexpected interrupt, intdata=0x%08X\n",
599 static int smsc75xx_ethtool_get_eeprom_len(struct net_device
*net
)
601 return MAX_EEPROM_SIZE
;
604 static int smsc75xx_ethtool_get_eeprom(struct net_device
*netdev
,
605 struct ethtool_eeprom
*ee
, u8
*data
)
607 struct usbnet
*dev
= netdev_priv(netdev
);
609 ee
->magic
= LAN75XX_EEPROM_MAGIC
;
611 return smsc75xx_read_eeprom(dev
, ee
->offset
, ee
->len
, data
);
614 static int smsc75xx_ethtool_set_eeprom(struct net_device
*netdev
,
615 struct ethtool_eeprom
*ee
, u8
*data
)
617 struct usbnet
*dev
= netdev_priv(netdev
);
619 if (ee
->magic
!= LAN75XX_EEPROM_MAGIC
) {
620 netdev_warn(dev
->net
, "EEPROM: magic value mismatch: 0x%x\n",
625 return smsc75xx_write_eeprom(dev
, ee
->offset
, ee
->len
, data
);
628 static void smsc75xx_ethtool_get_wol(struct net_device
*net
,
629 struct ethtool_wolinfo
*wolinfo
)
631 struct usbnet
*dev
= netdev_priv(net
);
632 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
634 wolinfo
->supported
= SUPPORTED_WAKE
;
635 wolinfo
->wolopts
= pdata
->wolopts
;
638 static int smsc75xx_ethtool_set_wol(struct net_device
*net
,
639 struct ethtool_wolinfo
*wolinfo
)
641 struct usbnet
*dev
= netdev_priv(net
);
642 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
644 pdata
->wolopts
= wolinfo
->wolopts
& SUPPORTED_WAKE
;
648 static const struct ethtool_ops smsc75xx_ethtool_ops
= {
649 .get_link
= usbnet_get_link
,
650 .nway_reset
= usbnet_nway_reset
,
651 .get_drvinfo
= usbnet_get_drvinfo
,
652 .get_msglevel
= usbnet_get_msglevel
,
653 .set_msglevel
= usbnet_set_msglevel
,
654 .get_settings
= usbnet_get_settings
,
655 .set_settings
= usbnet_set_settings
,
656 .get_eeprom_len
= smsc75xx_ethtool_get_eeprom_len
,
657 .get_eeprom
= smsc75xx_ethtool_get_eeprom
,
658 .set_eeprom
= smsc75xx_ethtool_set_eeprom
,
659 .get_wol
= smsc75xx_ethtool_get_wol
,
660 .set_wol
= smsc75xx_ethtool_set_wol
,
663 static int smsc75xx_ioctl(struct net_device
*netdev
, struct ifreq
*rq
, int cmd
)
665 struct usbnet
*dev
= netdev_priv(netdev
);
667 if (!netif_running(netdev
))
670 return generic_mii_ioctl(&dev
->mii
, if_mii(rq
), cmd
, NULL
);
673 static void smsc75xx_init_mac_address(struct usbnet
*dev
)
675 /* try reading mac address from EEPROM */
676 if (smsc75xx_read_eeprom(dev
, EEPROM_MAC_OFFSET
, ETH_ALEN
,
677 dev
->net
->dev_addr
) == 0) {
678 if (is_valid_ether_addr(dev
->net
->dev_addr
)) {
679 /* eeprom values are valid so use them */
680 netif_dbg(dev
, ifup
, dev
->net
,
681 "MAC address read from EEPROM\n");
686 /* no eeprom, or eeprom values are invalid. generate random MAC */
687 eth_hw_addr_random(dev
->net
);
688 netif_dbg(dev
, ifup
, dev
->net
, "MAC address set to eth_random_addr\n");
691 static int smsc75xx_set_mac_address(struct usbnet
*dev
)
693 u32 addr_lo
= dev
->net
->dev_addr
[0] | dev
->net
->dev_addr
[1] << 8 |
694 dev
->net
->dev_addr
[2] << 16 | dev
->net
->dev_addr
[3] << 24;
695 u32 addr_hi
= dev
->net
->dev_addr
[4] | dev
->net
->dev_addr
[5] << 8;
697 int ret
= smsc75xx_write_reg(dev
, RX_ADDRH
, addr_hi
);
698 check_warn_return(ret
, "Failed to write RX_ADDRH: %d\n", ret
);
700 ret
= smsc75xx_write_reg(dev
, RX_ADDRL
, addr_lo
);
701 check_warn_return(ret
, "Failed to write RX_ADDRL: %d\n", ret
);
703 addr_hi
|= ADDR_FILTX_FB_VALID
;
704 ret
= smsc75xx_write_reg(dev
, ADDR_FILTX
, addr_hi
);
705 check_warn_return(ret
, "Failed to write ADDR_FILTX: %d\n", ret
);
707 ret
= smsc75xx_write_reg(dev
, ADDR_FILTX
+ 4, addr_lo
);
708 check_warn_return(ret
, "Failed to write ADDR_FILTX+4: %d\n", ret
);
713 static int smsc75xx_phy_initialize(struct usbnet
*dev
)
715 int bmcr
, ret
, timeout
= 0;
717 /* Initialize MII structure */
718 dev
->mii
.dev
= dev
->net
;
719 dev
->mii
.mdio_read
= smsc75xx_mdio_read
;
720 dev
->mii
.mdio_write
= smsc75xx_mdio_write
;
721 dev
->mii
.phy_id_mask
= 0x1f;
722 dev
->mii
.reg_num_mask
= 0x1f;
723 dev
->mii
.supports_gmii
= 1;
724 dev
->mii
.phy_id
= SMSC75XX_INTERNAL_PHY_ID
;
726 /* reset phy and wait for reset to complete */
727 smsc75xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
, BMCR_RESET
);
731 bmcr
= smsc75xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
);
732 check_warn_return(bmcr
, "Error reading MII_BMCR\n");
734 } while ((bmcr
& BMCR_RESET
) && (timeout
< 100));
736 if (timeout
>= 100) {
737 netdev_warn(dev
->net
, "timeout on PHY Reset\n");
741 smsc75xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_ADVERTISE
,
742 ADVERTISE_ALL
| ADVERTISE_CSMA
| ADVERTISE_PAUSE_CAP
|
743 ADVERTISE_PAUSE_ASYM
);
744 smsc75xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_CTRL1000
,
747 /* read and write to clear phy interrupt status */
748 ret
= smsc75xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, PHY_INT_SRC
);
749 check_warn_return(ret
, "Error reading PHY_INT_SRC\n");
750 smsc75xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, PHY_INT_SRC
, 0xffff);
752 smsc75xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, PHY_INT_MASK
,
753 PHY_INT_MASK_DEFAULT
);
754 mii_nway_restart(&dev
->mii
);
756 netif_dbg(dev
, ifup
, dev
->net
, "phy initialised successfully\n");
760 static int smsc75xx_set_rx_max_frame_length(struct usbnet
*dev
, int size
)
766 ret
= smsc75xx_read_reg(dev
, MAC_RX
, &buf
);
767 check_warn_return(ret
, "Failed to read MAC_RX: %d\n", ret
);
769 rxenabled
= ((buf
& MAC_RX_RXEN
) != 0);
773 ret
= smsc75xx_write_reg(dev
, MAC_RX
, buf
);
774 check_warn_return(ret
, "Failed to write MAC_RX: %d\n", ret
);
777 /* add 4 to size for FCS */
778 buf
&= ~MAC_RX_MAX_SIZE
;
779 buf
|= (((size
+ 4) << MAC_RX_MAX_SIZE_SHIFT
) & MAC_RX_MAX_SIZE
);
781 ret
= smsc75xx_write_reg(dev
, MAC_RX
, buf
);
782 check_warn_return(ret
, "Failed to write MAC_RX: %d\n", ret
);
786 ret
= smsc75xx_write_reg(dev
, MAC_RX
, buf
);
787 check_warn_return(ret
, "Failed to write MAC_RX: %d\n", ret
);
793 static int smsc75xx_change_mtu(struct net_device
*netdev
, int new_mtu
)
795 struct usbnet
*dev
= netdev_priv(netdev
);
797 int ret
= smsc75xx_set_rx_max_frame_length(dev
, new_mtu
);
798 check_warn_return(ret
, "Failed to set mac rx frame length\n");
800 return usbnet_change_mtu(netdev
, new_mtu
);
803 /* Enable or disable Rx checksum offload engine */
804 static int smsc75xx_set_features(struct net_device
*netdev
,
805 netdev_features_t features
)
807 struct usbnet
*dev
= netdev_priv(netdev
);
808 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
812 spin_lock_irqsave(&pdata
->rfe_ctl_lock
, flags
);
814 if (features
& NETIF_F_RXCSUM
)
815 pdata
->rfe_ctl
|= RFE_CTL_TCPUDP_CKM
| RFE_CTL_IP_CKM
;
817 pdata
->rfe_ctl
&= ~(RFE_CTL_TCPUDP_CKM
| RFE_CTL_IP_CKM
);
819 spin_unlock_irqrestore(&pdata
->rfe_ctl_lock
, flags
);
820 /* it's racing here! */
822 ret
= smsc75xx_write_reg(dev
, RFE_CTL
, pdata
->rfe_ctl
);
823 check_warn_return(ret
, "Error writing RFE_CTL\n");
828 static int smsc75xx_wait_ready(struct usbnet
*dev
, int in_pm
)
836 ret
= __smsc75xx_read_reg(dev
, PMT_CTL
, &buf
, in_pm
);
838 check_warn_return(ret
, "Failed to read PMT_CTL: %d\n", ret
);
840 if (buf
& PMT_CTL_DEV_RDY
)
845 } while (timeout
< 100);
847 netdev_warn(dev
->net
, "timeout waiting for device ready\n");
851 static int smsc75xx_reset(struct usbnet
*dev
)
853 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
855 int ret
= 0, timeout
;
857 netif_dbg(dev
, ifup
, dev
->net
, "entering smsc75xx_reset\n");
859 ret
= smsc75xx_wait_ready(dev
, 0);
860 check_warn_return(ret
, "device not ready in smsc75xx_reset\n");
862 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
863 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
867 ret
= smsc75xx_write_reg(dev
, HW_CFG
, buf
);
868 check_warn_return(ret
, "Failed to write HW_CFG: %d\n", ret
);
873 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
874 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
876 } while ((buf
& HW_CFG_LRST
) && (timeout
< 100));
878 if (timeout
>= 100) {
879 netdev_warn(dev
->net
, "timeout on completion of Lite Reset\n");
883 netif_dbg(dev
, ifup
, dev
->net
, "Lite reset complete, resetting PHY\n");
885 ret
= smsc75xx_read_reg(dev
, PMT_CTL
, &buf
);
886 check_warn_return(ret
, "Failed to read PMT_CTL: %d\n", ret
);
888 buf
|= PMT_CTL_PHY_RST
;
890 ret
= smsc75xx_write_reg(dev
, PMT_CTL
, buf
);
891 check_warn_return(ret
, "Failed to write PMT_CTL: %d\n", ret
);
896 ret
= smsc75xx_read_reg(dev
, PMT_CTL
, &buf
);
897 check_warn_return(ret
, "Failed to read PMT_CTL: %d\n", ret
);
899 } while ((buf
& PMT_CTL_PHY_RST
) && (timeout
< 100));
901 if (timeout
>= 100) {
902 netdev_warn(dev
->net
, "timeout waiting for PHY Reset\n");
906 netif_dbg(dev
, ifup
, dev
->net
, "PHY reset complete\n");
908 smsc75xx_init_mac_address(dev
);
910 ret
= smsc75xx_set_mac_address(dev
);
911 check_warn_return(ret
, "Failed to set mac address\n");
913 netif_dbg(dev
, ifup
, dev
->net
, "MAC Address: %pM\n",
916 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
917 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
919 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG : 0x%08x\n",
924 ret
= smsc75xx_write_reg(dev
, HW_CFG
, buf
);
925 check_warn_return(ret
, "Failed to write HW_CFG: %d\n", ret
);
927 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
928 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
930 netif_dbg(dev
, ifup
, dev
->net
, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
935 dev
->rx_urb_size
= MAX_SINGLE_PACKET_SIZE
;
936 } else if (dev
->udev
->speed
== USB_SPEED_HIGH
) {
937 buf
= DEFAULT_HS_BURST_CAP_SIZE
/ HS_USB_PKT_SIZE
;
938 dev
->rx_urb_size
= DEFAULT_HS_BURST_CAP_SIZE
;
940 buf
= DEFAULT_FS_BURST_CAP_SIZE
/ FS_USB_PKT_SIZE
;
941 dev
->rx_urb_size
= DEFAULT_FS_BURST_CAP_SIZE
;
944 netif_dbg(dev
, ifup
, dev
->net
, "rx_urb_size=%ld\n",
945 (ulong
)dev
->rx_urb_size
);
947 ret
= smsc75xx_write_reg(dev
, BURST_CAP
, buf
);
948 check_warn_return(ret
, "Failed to write BURST_CAP: %d\n", ret
);
950 ret
= smsc75xx_read_reg(dev
, BURST_CAP
, &buf
);
951 check_warn_return(ret
, "Failed to read BURST_CAP: %d\n", ret
);
953 netif_dbg(dev
, ifup
, dev
->net
,
954 "Read Value from BURST_CAP after writing: 0x%08x\n", buf
);
956 ret
= smsc75xx_write_reg(dev
, BULK_IN_DLY
, DEFAULT_BULK_IN_DELAY
);
957 check_warn_return(ret
, "Failed to write BULK_IN_DLY: %d\n", ret
);
959 ret
= smsc75xx_read_reg(dev
, BULK_IN_DLY
, &buf
);
960 check_warn_return(ret
, "Failed to read BULK_IN_DLY: %d\n", ret
);
962 netif_dbg(dev
, ifup
, dev
->net
,
963 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf
);
966 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
967 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
969 netif_dbg(dev
, ifup
, dev
->net
, "HW_CFG: 0x%08x\n", buf
);
971 buf
|= (HW_CFG_MEF
| HW_CFG_BCE
);
973 ret
= smsc75xx_write_reg(dev
, HW_CFG
, buf
);
974 check_warn_return(ret
, "Failed to write HW_CFG: %d\n", ret
);
976 ret
= smsc75xx_read_reg(dev
, HW_CFG
, &buf
);
977 check_warn_return(ret
, "Failed to read HW_CFG: %d\n", ret
);
979 netif_dbg(dev
, ifup
, dev
->net
, "HW_CFG: 0x%08x\n", buf
);
983 buf
= (MAX_RX_FIFO_SIZE
- 512) / 512;
984 ret
= smsc75xx_write_reg(dev
, FCT_RX_FIFO_END
, buf
);
985 check_warn_return(ret
, "Failed to write FCT_RX_FIFO_END: %d\n", ret
);
987 netif_dbg(dev
, ifup
, dev
->net
, "FCT_RX_FIFO_END set to 0x%08x\n", buf
);
989 buf
= (MAX_TX_FIFO_SIZE
- 512) / 512;
990 ret
= smsc75xx_write_reg(dev
, FCT_TX_FIFO_END
, buf
);
991 check_warn_return(ret
, "Failed to write FCT_TX_FIFO_END: %d\n", ret
);
993 netif_dbg(dev
, ifup
, dev
->net
, "FCT_TX_FIFO_END set to 0x%08x\n", buf
);
995 ret
= smsc75xx_write_reg(dev
, INT_STS
, INT_STS_CLEAR_ALL
);
996 check_warn_return(ret
, "Failed to write INT_STS: %d\n", ret
);
998 ret
= smsc75xx_read_reg(dev
, ID_REV
, &buf
);
999 check_warn_return(ret
, "Failed to read ID_REV: %d\n", ret
);
1001 netif_dbg(dev
, ifup
, dev
->net
, "ID_REV = 0x%08x\n", buf
);
1003 ret
= smsc75xx_read_reg(dev
, E2P_CMD
, &buf
);
1004 check_warn_return(ret
, "Failed to read E2P_CMD: %d\n", ret
);
1006 /* only set default GPIO/LED settings if no EEPROM is detected */
1007 if (!(buf
& E2P_CMD_LOADED
)) {
1008 ret
= smsc75xx_read_reg(dev
, LED_GPIO_CFG
, &buf
);
1009 check_warn_return(ret
, "Failed to read LED_GPIO_CFG: %d\n",
1012 buf
&= ~(LED_GPIO_CFG_LED2_FUN_SEL
| LED_GPIO_CFG_LED10_FUN_SEL
);
1013 buf
|= LED_GPIO_CFG_LEDGPIO_EN
| LED_GPIO_CFG_LED2_FUN_SEL
;
1015 ret
= smsc75xx_write_reg(dev
, LED_GPIO_CFG
, buf
);
1016 check_warn_return(ret
, "Failed to write LED_GPIO_CFG: %d\n",
1020 ret
= smsc75xx_write_reg(dev
, FLOW
, 0);
1021 check_warn_return(ret
, "Failed to write FLOW: %d\n", ret
);
1023 ret
= smsc75xx_write_reg(dev
, FCT_FLOW
, 0);
1024 check_warn_return(ret
, "Failed to write FCT_FLOW: %d\n", ret
);
1026 /* Don't need rfe_ctl_lock during initialisation */
1027 ret
= smsc75xx_read_reg(dev
, RFE_CTL
, &pdata
->rfe_ctl
);
1028 check_warn_return(ret
, "Failed to read RFE_CTL: %d\n", ret
);
1030 pdata
->rfe_ctl
|= RFE_CTL_AB
| RFE_CTL_DPF
;
1032 ret
= smsc75xx_write_reg(dev
, RFE_CTL
, pdata
->rfe_ctl
);
1033 check_warn_return(ret
, "Failed to write RFE_CTL: %d\n", ret
);
1035 ret
= smsc75xx_read_reg(dev
, RFE_CTL
, &pdata
->rfe_ctl
);
1036 check_warn_return(ret
, "Failed to read RFE_CTL: %d\n", ret
);
1038 netif_dbg(dev
, ifup
, dev
->net
, "RFE_CTL set to 0x%08x\n",
1041 /* Enable or disable checksum offload engines */
1042 smsc75xx_set_features(dev
->net
, dev
->net
->features
);
1044 smsc75xx_set_multicast(dev
->net
);
1046 ret
= smsc75xx_phy_initialize(dev
);
1047 check_warn_return(ret
, "Failed to initialize PHY: %d\n", ret
);
1049 ret
= smsc75xx_read_reg(dev
, INT_EP_CTL
, &buf
);
1050 check_warn_return(ret
, "Failed to read INT_EP_CTL: %d\n", ret
);
1052 /* enable PHY interrupts */
1053 buf
|= INT_ENP_PHY_INT
;
1055 ret
= smsc75xx_write_reg(dev
, INT_EP_CTL
, buf
);
1056 check_warn_return(ret
, "Failed to write INT_EP_CTL: %d\n", ret
);
1058 /* allow mac to detect speed and duplex from phy */
1059 ret
= smsc75xx_read_reg(dev
, MAC_CR
, &buf
);
1060 check_warn_return(ret
, "Failed to read MAC_CR: %d\n", ret
);
1062 buf
|= (MAC_CR_ADD
| MAC_CR_ASD
);
1063 ret
= smsc75xx_write_reg(dev
, MAC_CR
, buf
);
1064 check_warn_return(ret
, "Failed to write MAC_CR: %d\n", ret
);
1066 ret
= smsc75xx_read_reg(dev
, MAC_TX
, &buf
);
1067 check_warn_return(ret
, "Failed to read MAC_TX: %d\n", ret
);
1071 ret
= smsc75xx_write_reg(dev
, MAC_TX
, buf
);
1072 check_warn_return(ret
, "Failed to write MAC_TX: %d\n", ret
);
1074 netif_dbg(dev
, ifup
, dev
->net
, "MAC_TX set to 0x%08x\n", buf
);
1076 ret
= smsc75xx_read_reg(dev
, FCT_TX_CTL
, &buf
);
1077 check_warn_return(ret
, "Failed to read FCT_TX_CTL: %d\n", ret
);
1079 buf
|= FCT_TX_CTL_EN
;
1081 ret
= smsc75xx_write_reg(dev
, FCT_TX_CTL
, buf
);
1082 check_warn_return(ret
, "Failed to write FCT_TX_CTL: %d\n", ret
);
1084 netif_dbg(dev
, ifup
, dev
->net
, "FCT_TX_CTL set to 0x%08x\n", buf
);
1086 ret
= smsc75xx_set_rx_max_frame_length(dev
, 1514);
1087 check_warn_return(ret
, "Failed to set max rx frame length\n");
1089 ret
= smsc75xx_read_reg(dev
, MAC_RX
, &buf
);
1090 check_warn_return(ret
, "Failed to read MAC_RX: %d\n", ret
);
1094 ret
= smsc75xx_write_reg(dev
, MAC_RX
, buf
);
1095 check_warn_return(ret
, "Failed to write MAC_RX: %d\n", ret
);
1097 netif_dbg(dev
, ifup
, dev
->net
, "MAC_RX set to 0x%08x\n", buf
);
1099 ret
= smsc75xx_read_reg(dev
, FCT_RX_CTL
, &buf
);
1100 check_warn_return(ret
, "Failed to read FCT_RX_CTL: %d\n", ret
);
1102 buf
|= FCT_RX_CTL_EN
;
1104 ret
= smsc75xx_write_reg(dev
, FCT_RX_CTL
, buf
);
1105 check_warn_return(ret
, "Failed to write FCT_RX_CTL: %d\n", ret
);
1107 netif_dbg(dev
, ifup
, dev
->net
, "FCT_RX_CTL set to 0x%08x\n", buf
);
1109 netif_dbg(dev
, ifup
, dev
->net
, "smsc75xx_reset, return 0\n");
1113 static const struct net_device_ops smsc75xx_netdev_ops
= {
1114 .ndo_open
= usbnet_open
,
1115 .ndo_stop
= usbnet_stop
,
1116 .ndo_start_xmit
= usbnet_start_xmit
,
1117 .ndo_tx_timeout
= usbnet_tx_timeout
,
1118 .ndo_change_mtu
= smsc75xx_change_mtu
,
1119 .ndo_set_mac_address
= eth_mac_addr
,
1120 .ndo_validate_addr
= eth_validate_addr
,
1121 .ndo_do_ioctl
= smsc75xx_ioctl
,
1122 .ndo_set_rx_mode
= smsc75xx_set_multicast
,
1123 .ndo_set_features
= smsc75xx_set_features
,
1126 static int smsc75xx_bind(struct usbnet
*dev
, struct usb_interface
*intf
)
1128 struct smsc75xx_priv
*pdata
= NULL
;
1131 printk(KERN_INFO SMSC_CHIPNAME
" v" SMSC_DRIVER_VERSION
"\n");
1133 ret
= usbnet_get_endpoints(dev
, intf
);
1134 check_warn_return(ret
, "usbnet_get_endpoints failed: %d\n", ret
);
1136 dev
->data
[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv
),
1139 pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
1141 netdev_warn(dev
->net
, "Unable to allocate smsc75xx_priv\n");
1147 spin_lock_init(&pdata
->rfe_ctl_lock
);
1148 mutex_init(&pdata
->dataport_mutex
);
1150 INIT_WORK(&pdata
->set_multicast
, smsc75xx_deferred_multicast_write
);
1152 if (DEFAULT_TX_CSUM_ENABLE
) {
1153 dev
->net
->features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
;
1154 if (DEFAULT_TSO_ENABLE
)
1155 dev
->net
->features
|= NETIF_F_SG
|
1156 NETIF_F_TSO
| NETIF_F_TSO6
;
1158 if (DEFAULT_RX_CSUM_ENABLE
)
1159 dev
->net
->features
|= NETIF_F_RXCSUM
;
1161 dev
->net
->hw_features
= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1162 NETIF_F_SG
| NETIF_F_TSO
| NETIF_F_TSO6
| NETIF_F_RXCSUM
;
1164 /* Init all registers */
1165 ret
= smsc75xx_reset(dev
);
1166 check_warn_return(ret
, "smsc75xx_reset error %d\n", ret
);
1168 dev
->net
->netdev_ops
= &smsc75xx_netdev_ops
;
1169 dev
->net
->ethtool_ops
= &smsc75xx_ethtool_ops
;
1170 dev
->net
->flags
|= IFF_MULTICAST
;
1171 dev
->net
->hard_header_len
+= SMSC75XX_TX_OVERHEAD
;
1172 dev
->hard_mtu
= dev
->net
->mtu
+ dev
->net
->hard_header_len
;
1176 static void smsc75xx_unbind(struct usbnet
*dev
, struct usb_interface
*intf
)
1178 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
1180 netif_dbg(dev
, ifdown
, dev
->net
, "free pdata\n");
1187 static u16
smsc_crc(const u8
*buffer
, size_t len
)
1189 return bitrev16(crc16(0xFFFF, buffer
, len
));
1192 static int smsc75xx_write_wuff(struct usbnet
*dev
, int filter
, u32 wuf_cfg
,
1195 int cfg_base
= WUF_CFGX
+ filter
* 4;
1196 int mask_base
= WUF_MASKX
+ filter
* 16;
1199 ret
= smsc75xx_write_reg(dev
, cfg_base
, wuf_cfg
);
1200 check_warn_return(ret
, "Error writing WUF_CFGX\n");
1202 ret
= smsc75xx_write_reg(dev
, mask_base
, wuf_mask1
);
1203 check_warn_return(ret
, "Error writing WUF_MASKX\n");
1205 ret
= smsc75xx_write_reg(dev
, mask_base
+ 4, 0);
1206 check_warn_return(ret
, "Error writing WUF_MASKX\n");
1208 ret
= smsc75xx_write_reg(dev
, mask_base
+ 8, 0);
1209 check_warn_return(ret
, "Error writing WUF_MASKX\n");
1211 ret
= smsc75xx_write_reg(dev
, mask_base
+ 12, 0);
1212 check_warn_return(ret
, "Error writing WUF_MASKX\n");
1217 static int smsc75xx_suspend(struct usb_interface
*intf
, pm_message_t message
)
1219 struct usbnet
*dev
= usb_get_intfdata(intf
);
1220 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
1224 ret
= usbnet_suspend(intf
, message
);
1225 check_warn_return(ret
, "usbnet_suspend error\n");
1227 /* if no wol options set, enter lowest power SUSPEND2 mode */
1228 if (!(pdata
->wolopts
& SUPPORTED_WAKE
)) {
1229 netdev_info(dev
->net
, "entering SUSPEND2 mode\n");
1231 /* disable energy detect (link up) & wake up events */
1232 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1233 check_warn_return(ret
, "Error reading WUCSR\n");
1235 val
&= ~(WUCSR_MPEN
| WUCSR_WUEN
);
1237 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1238 check_warn_return(ret
, "Error writing WUCSR\n");
1240 ret
= smsc75xx_read_reg_nopm(dev
, PMT_CTL
, &val
);
1241 check_warn_return(ret
, "Error reading PMT_CTL\n");
1243 val
&= ~(PMT_CTL_ED_EN
| PMT_CTL_WOL_EN
);
1245 ret
= smsc75xx_write_reg_nopm(dev
, PMT_CTL
, val
);
1246 check_warn_return(ret
, "Error writing PMT_CTL\n");
1248 /* enter suspend2 mode */
1249 ret
= smsc75xx_read_reg_nopm(dev
, PMT_CTL
, &val
);
1250 check_warn_return(ret
, "Error reading PMT_CTL\n");
1252 val
&= ~(PMT_CTL_SUS_MODE
| PMT_CTL_WUPS
| PMT_CTL_PHY_RST
);
1253 val
|= PMT_CTL_SUS_MODE_2
;
1255 ret
= smsc75xx_write_reg_nopm(dev
, PMT_CTL
, val
);
1256 check_warn_return(ret
, "Error writing PMT_CTL\n");
1261 if (pdata
->wolopts
& (WAKE_MCAST
| WAKE_ARP
)) {
1264 /* disable all filters */
1265 for (i
= 0; i
< WUF_NUM
; i
++) {
1266 ret
= smsc75xx_write_reg_nopm(dev
, WUF_CFGX
+ i
* 4, 0);
1267 check_warn_return(ret
, "Error writing WUF_CFGX\n");
1270 if (pdata
->wolopts
& WAKE_MCAST
) {
1271 const u8 mcast
[] = {0x01, 0x00, 0x5E};
1272 netdev_info(dev
->net
, "enabling multicast detection\n");
1274 val
= WUF_CFGX_EN
| WUF_CFGX_ATYPE_MULTICAST
1275 | smsc_crc(mcast
, 3);
1276 ret
= smsc75xx_write_wuff(dev
, filter
++, val
, 0x0007);
1277 check_warn_return(ret
, "Error writing wakeup filter\n");
1280 if (pdata
->wolopts
& WAKE_ARP
) {
1281 const u8 arp
[] = {0x08, 0x06};
1282 netdev_info(dev
->net
, "enabling ARP detection\n");
1284 val
= WUF_CFGX_EN
| WUF_CFGX_ATYPE_ALL
| (0x0C << 16)
1286 ret
= smsc75xx_write_wuff(dev
, filter
++, val
, 0x0003);
1287 check_warn_return(ret
, "Error writing wakeup filter\n");
1290 /* clear any pending pattern match packet status */
1291 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1292 check_warn_return(ret
, "Error reading WUCSR\n");
1296 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1297 check_warn_return(ret
, "Error writing WUCSR\n");
1299 netdev_info(dev
->net
, "enabling packet match detection\n");
1300 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1301 check_warn_return(ret
, "Error reading WUCSR\n");
1305 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1306 check_warn_return(ret
, "Error writing WUCSR\n");
1308 netdev_info(dev
->net
, "disabling packet match detection\n");
1309 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1310 check_warn_return(ret
, "Error reading WUCSR\n");
1314 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1315 check_warn_return(ret
, "Error writing WUCSR\n");
1318 /* disable magic, bcast & unicast wakeup sources */
1319 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1320 check_warn_return(ret
, "Error reading WUCSR\n");
1322 val
&= ~(WUCSR_MPEN
| WUCSR_BCST_EN
| WUCSR_PFDA_EN
);
1324 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1325 check_warn_return(ret
, "Error writing WUCSR\n");
1327 if (pdata
->wolopts
& WAKE_MAGIC
) {
1328 netdev_info(dev
->net
, "enabling magic packet wakeup\n");
1329 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1330 check_warn_return(ret
, "Error reading WUCSR\n");
1332 /* clear any pending magic packet status */
1333 val
|= WUCSR_MPR
| WUCSR_MPEN
;
1335 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1336 check_warn_return(ret
, "Error writing WUCSR\n");
1339 if (pdata
->wolopts
& WAKE_BCAST
) {
1340 netdev_info(dev
->net
, "enabling broadcast detection\n");
1341 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1342 check_warn_return(ret
, "Error reading WUCSR\n");
1344 val
|= WUCSR_BCAST_FR
| WUCSR_BCST_EN
;
1346 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1347 check_warn_return(ret
, "Error writing WUCSR\n");
1350 if (pdata
->wolopts
& WAKE_UCAST
) {
1351 netdev_info(dev
->net
, "enabling unicast detection\n");
1352 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1353 check_warn_return(ret
, "Error reading WUCSR\n");
1355 val
|= WUCSR_WUFR
| WUCSR_PFDA_EN
;
1357 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1358 check_warn_return(ret
, "Error writing WUCSR\n");
1361 /* enable receiver to enable frame reception */
1362 ret
= smsc75xx_read_reg_nopm(dev
, MAC_RX
, &val
);
1363 check_warn_return(ret
, "Failed to read MAC_RX: %d\n", ret
);
1367 ret
= smsc75xx_write_reg_nopm(dev
, MAC_RX
, val
);
1368 check_warn_return(ret
, "Failed to write MAC_RX: %d\n", ret
);
1370 /* some wol options are enabled, so enter SUSPEND0 */
1371 netdev_info(dev
->net
, "entering SUSPEND0 mode\n");
1373 ret
= smsc75xx_read_reg_nopm(dev
, PMT_CTL
, &val
);
1374 check_warn_return(ret
, "Error reading PMT_CTL\n");
1376 val
&= (~(PMT_CTL_SUS_MODE
| PMT_CTL_PHY_RST
));
1377 val
|= PMT_CTL_SUS_MODE_0
| PMT_CTL_WOL_EN
| PMT_CTL_WUPS
;
1379 ret
= smsc75xx_write_reg_nopm(dev
, PMT_CTL
, val
);
1380 check_warn_return(ret
, "Error writing PMT_CTL\n");
1382 smsc75xx_set_feature(dev
, USB_DEVICE_REMOTE_WAKEUP
);
1387 static int smsc75xx_resume(struct usb_interface
*intf
)
1389 struct usbnet
*dev
= usb_get_intfdata(intf
);
1390 struct smsc75xx_priv
*pdata
= (struct smsc75xx_priv
*)(dev
->data
[0]);
1394 if (pdata
->wolopts
) {
1395 netdev_info(dev
->net
, "resuming from SUSPEND0\n");
1397 smsc75xx_clear_feature(dev
, USB_DEVICE_REMOTE_WAKEUP
);
1399 /* Disable wakeup sources */
1400 ret
= smsc75xx_read_reg_nopm(dev
, WUCSR
, &val
);
1401 check_warn_return(ret
, "Error reading WUCSR\n");
1403 val
&= ~(WUCSR_WUEN
| WUCSR_MPEN
| WUCSR_PFDA_EN
1406 ret
= smsc75xx_write_reg_nopm(dev
, WUCSR
, val
);
1407 check_warn_return(ret
, "Error writing WUCSR\n");
1409 /* clear wake-up status */
1410 ret
= smsc75xx_read_reg_nopm(dev
, PMT_CTL
, &val
);
1411 check_warn_return(ret
, "Error reading PMT_CTL\n");
1413 val
&= ~PMT_CTL_WOL_EN
;
1414 val
|= PMT_CTL_WUPS
;
1416 ret
= smsc75xx_write_reg_nopm(dev
, PMT_CTL
, val
);
1417 check_warn_return(ret
, "Error writing PMT_CTL\n");
1419 netdev_info(dev
->net
, "resuming from SUSPEND2\n");
1421 ret
= smsc75xx_read_reg_nopm(dev
, PMT_CTL
, &val
);
1422 check_warn_return(ret
, "Error reading PMT_CTL\n");
1424 val
|= PMT_CTL_PHY_PWRUP
;
1426 ret
= smsc75xx_write_reg_nopm(dev
, PMT_CTL
, val
);
1427 check_warn_return(ret
, "Error writing PMT_CTL\n");
1430 ret
= smsc75xx_wait_ready(dev
, 1);
1431 check_warn_return(ret
, "device not ready in smsc75xx_resume\n");
1433 return usbnet_resume(intf
);
1436 static void smsc75xx_rx_csum_offload(struct usbnet
*dev
, struct sk_buff
*skb
,
1437 u32 rx_cmd_a
, u32 rx_cmd_b
)
1439 if (!(dev
->net
->features
& NETIF_F_RXCSUM
) ||
1440 unlikely(rx_cmd_a
& RX_CMD_A_LCSM
)) {
1441 skb
->ip_summed
= CHECKSUM_NONE
;
1443 skb
->csum
= ntohs((u16
)(rx_cmd_b
>> RX_CMD_B_CSUM_SHIFT
));
1444 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1448 static int smsc75xx_rx_fixup(struct usbnet
*dev
, struct sk_buff
*skb
)
1450 while (skb
->len
> 0) {
1451 u32 rx_cmd_a
, rx_cmd_b
, align_count
, size
;
1452 struct sk_buff
*ax_skb
;
1453 unsigned char *packet
;
1455 memcpy(&rx_cmd_a
, skb
->data
, sizeof(rx_cmd_a
));
1456 le32_to_cpus(&rx_cmd_a
);
1459 memcpy(&rx_cmd_b
, skb
->data
, sizeof(rx_cmd_b
));
1460 le32_to_cpus(&rx_cmd_b
);
1461 skb_pull(skb
, 4 + RXW_PADDING
);
1465 /* get the packet length */
1466 size
= (rx_cmd_a
& RX_CMD_A_LEN
) - RXW_PADDING
;
1467 align_count
= (4 - ((size
+ RXW_PADDING
) % 4)) % 4;
1469 if (unlikely(rx_cmd_a
& RX_CMD_A_RED
)) {
1470 netif_dbg(dev
, rx_err
, dev
->net
,
1471 "Error rx_cmd_a=0x%08x\n", rx_cmd_a
);
1472 dev
->net
->stats
.rx_errors
++;
1473 dev
->net
->stats
.rx_dropped
++;
1475 if (rx_cmd_a
& RX_CMD_A_FCS
)
1476 dev
->net
->stats
.rx_crc_errors
++;
1477 else if (rx_cmd_a
& (RX_CMD_A_LONG
| RX_CMD_A_RUNT
))
1478 dev
->net
->stats
.rx_frame_errors
++;
1480 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1481 if (unlikely(size
> (ETH_FRAME_LEN
+ 12))) {
1482 netif_dbg(dev
, rx_err
, dev
->net
,
1483 "size err rx_cmd_a=0x%08x\n",
1488 /* last frame in this batch */
1489 if (skb
->len
== size
) {
1490 smsc75xx_rx_csum_offload(dev
, skb
, rx_cmd_a
,
1493 skb_trim(skb
, skb
->len
- 4); /* remove fcs */
1494 skb
->truesize
= size
+ sizeof(struct sk_buff
);
1499 ax_skb
= skb_clone(skb
, GFP_ATOMIC
);
1500 if (unlikely(!ax_skb
)) {
1501 netdev_warn(dev
->net
, "Error allocating skb\n");
1506 ax_skb
->data
= packet
;
1507 skb_set_tail_pointer(ax_skb
, size
);
1509 smsc75xx_rx_csum_offload(dev
, ax_skb
, rx_cmd_a
,
1512 skb_trim(ax_skb
, ax_skb
->len
- 4); /* remove fcs */
1513 ax_skb
->truesize
= size
+ sizeof(struct sk_buff
);
1515 usbnet_skb_return(dev
, ax_skb
);
1518 skb_pull(skb
, size
);
1520 /* padding bytes before the next frame starts */
1522 skb_pull(skb
, align_count
);
1525 if (unlikely(skb
->len
< 0)) {
1526 netdev_warn(dev
->net
, "invalid rx length<0 %d\n", skb
->len
);
1533 static struct sk_buff
*smsc75xx_tx_fixup(struct usbnet
*dev
,
1534 struct sk_buff
*skb
, gfp_t flags
)
1536 u32 tx_cmd_a
, tx_cmd_b
;
1540 if (skb_headroom(skb
) < SMSC75XX_TX_OVERHEAD
) {
1541 struct sk_buff
*skb2
=
1542 skb_copy_expand(skb
, SMSC75XX_TX_OVERHEAD
, 0, flags
);
1543 dev_kfree_skb_any(skb
);
1549 tx_cmd_a
= (u32
)(skb
->len
& TX_CMD_A_LEN
) | TX_CMD_A_FCS
;
1551 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1552 tx_cmd_a
|= TX_CMD_A_IPE
| TX_CMD_A_TPE
;
1554 if (skb_is_gso(skb
)) {
1555 u16 mss
= max(skb_shinfo(skb
)->gso_size
, TX_MSS_MIN
);
1556 tx_cmd_b
= (mss
<< TX_CMD_B_MSS_SHIFT
) & TX_CMD_B_MSS
;
1558 tx_cmd_a
|= TX_CMD_A_LSO
;
1564 cpu_to_le32s(&tx_cmd_b
);
1565 memcpy(skb
->data
, &tx_cmd_b
, 4);
1568 cpu_to_le32s(&tx_cmd_a
);
1569 memcpy(skb
->data
, &tx_cmd_a
, 4);
1574 static const struct driver_info smsc75xx_info
= {
1575 .description
= "smsc75xx USB 2.0 Gigabit Ethernet",
1576 .bind
= smsc75xx_bind
,
1577 .unbind
= smsc75xx_unbind
,
1578 .link_reset
= smsc75xx_link_reset
,
1579 .reset
= smsc75xx_reset
,
1580 .rx_fixup
= smsc75xx_rx_fixup
,
1581 .tx_fixup
= smsc75xx_tx_fixup
,
1582 .status
= smsc75xx_status
,
1583 .flags
= FLAG_ETHER
| FLAG_SEND_ZLP
| FLAG_LINK_INTR
,
1586 static const struct usb_device_id products
[] = {
1588 /* SMSC7500 USB Gigabit Ethernet Device */
1589 USB_DEVICE(USB_VENDOR_ID_SMSC
, USB_PRODUCT_ID_LAN7500
),
1590 .driver_info
= (unsigned long) &smsc75xx_info
,
1593 /* SMSC7500 USB Gigabit Ethernet Device */
1594 USB_DEVICE(USB_VENDOR_ID_SMSC
, USB_PRODUCT_ID_LAN7505
),
1595 .driver_info
= (unsigned long) &smsc75xx_info
,
1599 MODULE_DEVICE_TABLE(usb
, products
);
1601 static struct usb_driver smsc75xx_driver
= {
1602 .name
= SMSC_CHIPNAME
,
1603 .id_table
= products
,
1604 .probe
= usbnet_probe
,
1605 .suspend
= smsc75xx_suspend
,
1606 .resume
= smsc75xx_resume
,
1607 .reset_resume
= smsc75xx_resume
,
1608 .disconnect
= usbnet_disconnect
,
1609 .disable_hub_initiated_lpm
= 1,
1612 module_usb_driver(smsc75xx_driver
);
1614 MODULE_AUTHOR("Nancy Lin");
1615 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
1616 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
1617 MODULE_LICENSE("GPL");