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, 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/crc32.h>
30 #include <linux/usb/usbnet.h>
33 #define SMSC_CHIPNAME "smsc95xx"
34 #define SMSC_DRIVER_VERSION "1.0.4"
35 #define HS_USB_PKT_SIZE (512)
36 #define FS_USB_PKT_SIZE (64)
37 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
38 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
39 #define DEFAULT_BULK_IN_DELAY (0x00002000)
40 #define MAX_SINGLE_PACKET_SIZE (2048)
41 #define LAN95XX_EEPROM_MAGIC (0x9500)
42 #define EEPROM_MAC_OFFSET (0x01)
43 #define DEFAULT_TX_CSUM_ENABLE (true)
44 #define DEFAULT_RX_CSUM_ENABLE (true)
45 #define SMSC95XX_INTERNAL_PHY_ID (1)
46 #define SMSC95XX_TX_OVERHEAD (8)
47 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
49 struct smsc95xx_priv
{
51 spinlock_t mac_cr_lock
;
57 struct usb_ctrlrequest req
;
61 static int turbo_mode
= true;
62 module_param(turbo_mode
, bool, 0644);
63 MODULE_PARM_DESC(turbo_mode
, "Enable multiple frames per Rx transaction");
65 static int smsc95xx_read_reg(struct usbnet
*dev
, u32 index
, u32
*data
)
67 u32
*buf
= kmalloc(4, GFP_KERNEL
);
75 ret
= usb_control_msg(dev
->udev
, usb_rcvctrlpipe(dev
->udev
, 0),
76 USB_VENDOR_REQUEST_READ_REGISTER
,
77 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
78 00, index
, buf
, 4, USB_CTRL_GET_TIMEOUT
);
80 if (unlikely(ret
< 0))
81 devwarn(dev
, "Failed to read register index 0x%08x", index
);
90 static int smsc95xx_write_reg(struct usbnet
*dev
, u32 index
, u32 data
)
92 u32
*buf
= kmalloc(4, GFP_KERNEL
);
103 ret
= usb_control_msg(dev
->udev
, usb_sndctrlpipe(dev
->udev
, 0),
104 USB_VENDOR_REQUEST_WRITE_REGISTER
,
105 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
106 00, index
, buf
, 4, USB_CTRL_SET_TIMEOUT
);
108 if (unlikely(ret
< 0))
109 devwarn(dev
, "Failed to write register index 0x%08x", index
);
116 /* Loop until the read is completed with timeout
117 * called with phy_mutex held */
118 static int smsc95xx_phy_wait_not_busy(struct usbnet
*dev
)
120 unsigned long start_time
= jiffies
;
124 smsc95xx_read_reg(dev
, MII_ADDR
, &val
);
125 if (!(val
& MII_BUSY_
))
127 } while (!time_after(jiffies
, start_time
+ HZ
));
132 static int smsc95xx_mdio_read(struct net_device
*netdev
, int phy_id
, int idx
)
134 struct usbnet
*dev
= netdev_priv(netdev
);
137 mutex_lock(&dev
->phy_mutex
);
139 /* confirm MII not busy */
140 if (smsc95xx_phy_wait_not_busy(dev
)) {
141 devwarn(dev
, "MII is busy in smsc95xx_mdio_read");
142 mutex_unlock(&dev
->phy_mutex
);
146 /* set the address, index & direction (read from PHY) */
147 phy_id
&= dev
->mii
.phy_id_mask
;
148 idx
&= dev
->mii
.reg_num_mask
;
149 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_READ_
;
150 smsc95xx_write_reg(dev
, MII_ADDR
, addr
);
152 if (smsc95xx_phy_wait_not_busy(dev
)) {
153 devwarn(dev
, "Timed out reading MII reg %02X", idx
);
154 mutex_unlock(&dev
->phy_mutex
);
158 smsc95xx_read_reg(dev
, MII_DATA
, &val
);
160 mutex_unlock(&dev
->phy_mutex
);
162 return (u16
)(val
& 0xFFFF);
165 static void smsc95xx_mdio_write(struct net_device
*netdev
, int phy_id
, int idx
,
168 struct usbnet
*dev
= netdev_priv(netdev
);
171 mutex_lock(&dev
->phy_mutex
);
173 /* confirm MII not busy */
174 if (smsc95xx_phy_wait_not_busy(dev
)) {
175 devwarn(dev
, "MII is busy in smsc95xx_mdio_write");
176 mutex_unlock(&dev
->phy_mutex
);
181 smsc95xx_write_reg(dev
, MII_DATA
, val
);
183 /* set the address, index & direction (write to PHY) */
184 phy_id
&= dev
->mii
.phy_id_mask
;
185 idx
&= dev
->mii
.reg_num_mask
;
186 addr
= (phy_id
<< 11) | (idx
<< 6) | MII_WRITE_
;
187 smsc95xx_write_reg(dev
, MII_ADDR
, addr
);
189 if (smsc95xx_phy_wait_not_busy(dev
))
190 devwarn(dev
, "Timed out writing MII reg %02X", idx
);
192 mutex_unlock(&dev
->phy_mutex
);
195 static int smsc95xx_wait_eeprom(struct usbnet
*dev
)
197 unsigned long start_time
= jiffies
;
201 smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
202 if (!(val
& E2P_CMD_BUSY_
) || (val
& E2P_CMD_TIMEOUT_
))
205 } while (!time_after(jiffies
, start_time
+ HZ
));
207 if (val
& (E2P_CMD_TIMEOUT_
| E2P_CMD_BUSY_
)) {
208 devwarn(dev
, "EEPROM read operation timeout");
215 static int smsc95xx_eeprom_confirm_not_busy(struct usbnet
*dev
)
217 unsigned long start_time
= jiffies
;
221 smsc95xx_read_reg(dev
, E2P_CMD
, &val
);
223 if (!(val
& E2P_CMD_BUSY_
))
227 } while (!time_after(jiffies
, start_time
+ HZ
));
229 devwarn(dev
, "EEPROM is busy");
233 static int smsc95xx_read_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
242 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
246 for (i
= 0; i
< length
; i
++) {
247 val
= E2P_CMD_BUSY_
| E2P_CMD_READ_
| (offset
& E2P_CMD_ADDR_
);
248 smsc95xx_write_reg(dev
, E2P_CMD
, val
);
250 ret
= smsc95xx_wait_eeprom(dev
);
254 smsc95xx_read_reg(dev
, E2P_DATA
, &val
);
256 data
[i
] = val
& 0xFF;
263 static int smsc95xx_write_eeprom(struct usbnet
*dev
, u32 offset
, u32 length
,
272 ret
= smsc95xx_eeprom_confirm_not_busy(dev
);
276 /* Issue write/erase enable command */
277 val
= E2P_CMD_BUSY_
| E2P_CMD_EWEN_
;
278 smsc95xx_write_reg(dev
, E2P_CMD
, val
);
280 ret
= smsc95xx_wait_eeprom(dev
);
284 for (i
= 0; i
< length
; i
++) {
286 /* Fill data register */
288 smsc95xx_write_reg(dev
, E2P_DATA
, val
);
290 /* Send "write" command */
291 val
= E2P_CMD_BUSY_
| E2P_CMD_WRITE_
| (offset
& E2P_CMD_ADDR_
);
292 smsc95xx_write_reg(dev
, E2P_CMD
, val
);
294 ret
= smsc95xx_wait_eeprom(dev
);
304 static void smsc95xx_async_cmd_callback(struct urb
*urb
)
306 struct usb_context
*usb_context
= urb
->context
;
307 struct usbnet
*dev
= usb_context
->dev
;
308 int status
= urb
->status
;
311 devwarn(dev
, "async callback failed with %d", status
);
317 static int smsc95xx_write_reg_async(struct usbnet
*dev
, u16 index
, u32
*data
)
319 struct usb_context
*usb_context
;
324 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
326 devwarn(dev
, "Error allocating URB");
330 usb_context
= kmalloc(sizeof(struct usb_context
), GFP_ATOMIC
);
331 if (usb_context
== NULL
) {
332 devwarn(dev
, "Error allocating control msg");
337 usb_context
->req
.bRequestType
=
338 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
;
339 usb_context
->req
.bRequest
= USB_VENDOR_REQUEST_WRITE_REGISTER
;
340 usb_context
->req
.wValue
= 00;
341 usb_context
->req
.wIndex
= cpu_to_le16(index
);
342 usb_context
->req
.wLength
= cpu_to_le16(size
);
344 usb_fill_control_urb(urb
, dev
->udev
, usb_sndctrlpipe(dev
->udev
, 0),
345 (void *)&usb_context
->req
, data
, size
,
346 smsc95xx_async_cmd_callback
,
347 (void *)usb_context
);
349 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
351 devwarn(dev
, "Error submitting control msg, sts=%d", status
);
359 /* returns hash bit number for given MAC address
361 * 01 00 5E 00 00 01 -> returns bit number 31 */
362 static unsigned int smsc95xx_hash(char addr
[ETH_ALEN
])
364 return (ether_crc(ETH_ALEN
, addr
) >> 26) & 0x3f;
367 static void smsc95xx_set_multicast(struct net_device
*netdev
)
369 struct usbnet
*dev
= netdev_priv(netdev
);
370 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
375 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
377 if (dev
->net
->flags
& IFF_PROMISC
) {
378 if (netif_msg_drv(dev
))
379 devdbg(dev
, "promiscuous mode enabled");
380 pdata
->mac_cr
|= MAC_CR_PRMS_
;
381 pdata
->mac_cr
&= ~(MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
382 } else if (dev
->net
->flags
& IFF_ALLMULTI
) {
383 if (netif_msg_drv(dev
))
384 devdbg(dev
, "receive all multicast enabled");
385 pdata
->mac_cr
|= MAC_CR_MCPAS_
;
386 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_HPFILT_
);
387 } else if (dev
->net
->mc_count
> 0) {
388 struct dev_mc_list
*mc_list
= dev
->net
->mc_list
;
391 pdata
->mac_cr
|= MAC_CR_HPFILT_
;
392 pdata
->mac_cr
&= ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
396 if (mc_list
->dmi_addrlen
== ETH_ALEN
) {
397 u32 bitnum
= smsc95xx_hash(mc_list
->dmi_addr
);
398 u32 mask
= 0x01 << (bitnum
& 0x1F);
404 devwarn(dev
, "dmi_addrlen != 6");
406 mc_list
= mc_list
->next
;
409 if (count
!= ((u32
)dev
->net
->mc_count
))
410 devwarn(dev
, "mc_count != dev->mc_count");
412 if (netif_msg_drv(dev
))
413 devdbg(dev
, "HASHH=0x%08X, HASHL=0x%08X", hash_hi
,
416 if (netif_msg_drv(dev
))
417 devdbg(dev
, "receive own packets only");
419 ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
422 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
424 /* Initiate async writes, as we can't wait for completion here */
425 smsc95xx_write_reg_async(dev
, HASHH
, &hash_hi
);
426 smsc95xx_write_reg_async(dev
, HASHL
, &hash_lo
);
427 smsc95xx_write_reg_async(dev
, MAC_CR
, &pdata
->mac_cr
);
430 static void smsc95xx_phy_update_flowcontrol(struct usbnet
*dev
, u8 duplex
,
431 u16 lcladv
, u16 rmtadv
)
433 u32 flow
, afc_cfg
= 0;
435 int ret
= smsc95xx_read_reg(dev
, AFC_CFG
, &afc_cfg
);
437 devwarn(dev
, "error reading AFC_CFG");
441 if (duplex
== DUPLEX_FULL
) {
442 u8 cap
= mii_resolve_flowctrl_fdx(lcladv
, rmtadv
);
444 if (cap
& FLOW_CTRL_RX
)
449 if (cap
& FLOW_CTRL_TX
)
454 if (netif_msg_link(dev
))
455 devdbg(dev
, "rx pause %s, tx pause %s",
456 (cap
& FLOW_CTRL_RX
? "enabled" : "disabled"),
457 (cap
& FLOW_CTRL_TX
? "enabled" : "disabled"));
459 if (netif_msg_link(dev
))
460 devdbg(dev
, "half duplex");
465 smsc95xx_write_reg(dev
, FLOW
, flow
);
466 smsc95xx_write_reg(dev
, AFC_CFG
, afc_cfg
);
469 static int smsc95xx_link_reset(struct usbnet
*dev
)
471 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
472 struct mii_if_info
*mii
= &dev
->mii
;
473 struct ethtool_cmd ecmd
;
478 /* clear interrupt status */
479 smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, PHY_INT_SRC
);
480 intdata
= 0xFFFFFFFF;
481 smsc95xx_write_reg(dev
, INT_STS
, intdata
);
483 mii_check_media(mii
, 1, 1);
484 mii_ethtool_gset(&dev
->mii
, &ecmd
);
485 lcladv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_ADVERTISE
);
486 rmtadv
= smsc95xx_mdio_read(dev
->net
, mii
->phy_id
, MII_LPA
);
488 if (netif_msg_link(dev
))
489 devdbg(dev
, "speed: %d duplex: %d lcladv: %04x rmtadv: %04x",
490 ecmd
.speed
, ecmd
.duplex
, lcladv
, rmtadv
);
492 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
493 if (ecmd
.duplex
!= DUPLEX_FULL
) {
494 pdata
->mac_cr
&= ~MAC_CR_FDPX_
;
495 pdata
->mac_cr
|= MAC_CR_RCVOWN_
;
497 pdata
->mac_cr
&= ~MAC_CR_RCVOWN_
;
498 pdata
->mac_cr
|= MAC_CR_FDPX_
;
500 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
502 smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
504 smsc95xx_phy_update_flowcontrol(dev
, ecmd
.duplex
, lcladv
, rmtadv
);
509 static void smsc95xx_status(struct usbnet
*dev
, struct urb
*urb
)
513 if (urb
->actual_length
!= 4) {
514 devwarn(dev
, "unexpected urb length %d", urb
->actual_length
);
518 memcpy(&intdata
, urb
->transfer_buffer
, 4);
519 le32_to_cpus(&intdata
);
521 if (netif_msg_link(dev
))
522 devdbg(dev
, "intdata: 0x%08X", intdata
);
524 if (intdata
& INT_ENP_PHY_INT_
)
525 usbnet_defer_kevent(dev
, EVENT_LINK_RESET
);
527 devwarn(dev
, "unexpected interrupt, intdata=0x%08X", intdata
);
530 /* Enable or disable Tx & Rx checksum offload engines */
531 static int smsc95xx_set_csums(struct usbnet
*dev
)
533 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
535 int ret
= smsc95xx_read_reg(dev
, COE_CR
, &read_buf
);
537 devwarn(dev
, "Failed to read COE_CR: %d", ret
);
541 if (pdata
->use_tx_csum
)
542 read_buf
|= Tx_COE_EN_
;
544 read_buf
&= ~Tx_COE_EN_
;
546 if (pdata
->use_rx_csum
)
547 read_buf
|= Rx_COE_EN_
;
549 read_buf
&= ~Rx_COE_EN_
;
551 ret
= smsc95xx_write_reg(dev
, COE_CR
, read_buf
);
553 devwarn(dev
, "Failed to write COE_CR: %d", ret
);
557 if (netif_msg_hw(dev
))
558 devdbg(dev
, "COE_CR = 0x%08x", read_buf
);
562 static int smsc95xx_ethtool_get_eeprom_len(struct net_device
*net
)
564 return MAX_EEPROM_SIZE
;
567 static int smsc95xx_ethtool_get_eeprom(struct net_device
*netdev
,
568 struct ethtool_eeprom
*ee
, u8
*data
)
570 struct usbnet
*dev
= netdev_priv(netdev
);
572 ee
->magic
= LAN95XX_EEPROM_MAGIC
;
574 return smsc95xx_read_eeprom(dev
, ee
->offset
, ee
->len
, data
);
577 static int smsc95xx_ethtool_set_eeprom(struct net_device
*netdev
,
578 struct ethtool_eeprom
*ee
, u8
*data
)
580 struct usbnet
*dev
= netdev_priv(netdev
);
582 if (ee
->magic
!= LAN95XX_EEPROM_MAGIC
) {
583 devwarn(dev
, "EEPROM: magic value mismatch, magic = 0x%x",
588 return smsc95xx_write_eeprom(dev
, ee
->offset
, ee
->len
, data
);
591 static u32
smsc95xx_ethtool_get_rx_csum(struct net_device
*netdev
)
593 struct usbnet
*dev
= netdev_priv(netdev
);
594 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
596 return pdata
->use_rx_csum
;
599 static int smsc95xx_ethtool_set_rx_csum(struct net_device
*netdev
, u32 val
)
601 struct usbnet
*dev
= netdev_priv(netdev
);
602 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
604 pdata
->use_rx_csum
= !!val
;
606 return smsc95xx_set_csums(dev
);
609 static u32
smsc95xx_ethtool_get_tx_csum(struct net_device
*netdev
)
611 struct usbnet
*dev
= netdev_priv(netdev
);
612 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
614 return pdata
->use_tx_csum
;
617 static int smsc95xx_ethtool_set_tx_csum(struct net_device
*netdev
, u32 val
)
619 struct usbnet
*dev
= netdev_priv(netdev
);
620 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
622 pdata
->use_tx_csum
= !!val
;
624 ethtool_op_set_tx_hw_csum(netdev
, pdata
->use_tx_csum
);
625 return smsc95xx_set_csums(dev
);
628 static const struct ethtool_ops smsc95xx_ethtool_ops
= {
629 .get_link
= usbnet_get_link
,
630 .nway_reset
= usbnet_nway_reset
,
631 .get_drvinfo
= usbnet_get_drvinfo
,
632 .get_msglevel
= usbnet_get_msglevel
,
633 .set_msglevel
= usbnet_set_msglevel
,
634 .get_settings
= usbnet_get_settings
,
635 .set_settings
= usbnet_set_settings
,
636 .get_eeprom_len
= smsc95xx_ethtool_get_eeprom_len
,
637 .get_eeprom
= smsc95xx_ethtool_get_eeprom
,
638 .set_eeprom
= smsc95xx_ethtool_set_eeprom
,
639 .get_tx_csum
= smsc95xx_ethtool_get_tx_csum
,
640 .set_tx_csum
= smsc95xx_ethtool_set_tx_csum
,
641 .get_rx_csum
= smsc95xx_ethtool_get_rx_csum
,
642 .set_rx_csum
= smsc95xx_ethtool_set_rx_csum
,
645 static int smsc95xx_ioctl(struct net_device
*netdev
, struct ifreq
*rq
, int cmd
)
647 struct usbnet
*dev
= netdev_priv(netdev
);
649 if (!netif_running(netdev
))
652 return generic_mii_ioctl(&dev
->mii
, if_mii(rq
), cmd
, NULL
);
655 static void smsc95xx_init_mac_address(struct usbnet
*dev
)
657 /* try reading mac address from EEPROM */
658 if (smsc95xx_read_eeprom(dev
, EEPROM_MAC_OFFSET
, ETH_ALEN
,
659 dev
->net
->dev_addr
) == 0) {
660 if (is_valid_ether_addr(dev
->net
->dev_addr
)) {
661 /* eeprom values are valid so use them */
662 if (netif_msg_ifup(dev
))
663 devdbg(dev
, "MAC address read from EEPROM");
668 /* no eeprom, or eeprom values are invalid. generate random MAC */
669 random_ether_addr(dev
->net
->dev_addr
);
670 if (netif_msg_ifup(dev
))
671 devdbg(dev
, "MAC address set to random_ether_addr");
674 static int smsc95xx_set_mac_address(struct usbnet
*dev
)
676 u32 addr_lo
= dev
->net
->dev_addr
[0] | dev
->net
->dev_addr
[1] << 8 |
677 dev
->net
->dev_addr
[2] << 16 | dev
->net
->dev_addr
[3] << 24;
678 u32 addr_hi
= dev
->net
->dev_addr
[4] | dev
->net
->dev_addr
[5] << 8;
681 ret
= smsc95xx_write_reg(dev
, ADDRL
, addr_lo
);
683 devwarn(dev
, "Failed to write ADDRL: %d", ret
);
687 ret
= smsc95xx_write_reg(dev
, ADDRH
, addr_hi
);
689 devwarn(dev
, "Failed to write ADDRH: %d", ret
);
696 /* starts the TX path */
697 static void smsc95xx_start_tx_path(struct usbnet
*dev
)
699 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
703 /* Enable Tx at MAC */
704 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
705 pdata
->mac_cr
|= MAC_CR_TXEN_
;
706 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
708 smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
710 /* Enable Tx at SCSRs */
711 reg_val
= TX_CFG_ON_
;
712 smsc95xx_write_reg(dev
, TX_CFG
, reg_val
);
715 /* Starts the Receive path */
716 static void smsc95xx_start_rx_path(struct usbnet
*dev
)
718 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
721 spin_lock_irqsave(&pdata
->mac_cr_lock
, flags
);
722 pdata
->mac_cr
|= MAC_CR_RXEN_
;
723 spin_unlock_irqrestore(&pdata
->mac_cr_lock
, flags
);
725 smsc95xx_write_reg(dev
, MAC_CR
, pdata
->mac_cr
);
728 static int smsc95xx_phy_initialize(struct usbnet
*dev
)
730 /* Initialize MII structure */
731 dev
->mii
.dev
= dev
->net
;
732 dev
->mii
.mdio_read
= smsc95xx_mdio_read
;
733 dev
->mii
.mdio_write
= smsc95xx_mdio_write
;
734 dev
->mii
.phy_id_mask
= 0x1f;
735 dev
->mii
.reg_num_mask
= 0x1f;
736 dev
->mii
.phy_id
= SMSC95XX_INTERNAL_PHY_ID
;
738 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
, BMCR_RESET
);
739 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_ADVERTISE
,
740 ADVERTISE_ALL
| ADVERTISE_CSMA
| ADVERTISE_PAUSE_CAP
|
741 ADVERTISE_PAUSE_ASYM
);
744 smsc95xx_mdio_read(dev
->net
, dev
->mii
.phy_id
, PHY_INT_SRC
);
746 smsc95xx_mdio_write(dev
->net
, dev
->mii
.phy_id
, PHY_INT_MASK
,
747 PHY_INT_MASK_DEFAULT_
);
748 mii_nway_restart(&dev
->mii
);
750 if (netif_msg_ifup(dev
))
751 devdbg(dev
, "phy initialised successfully");
755 static int smsc95xx_reset(struct usbnet
*dev
)
757 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
758 struct net_device
*netdev
= dev
->net
;
759 u32 read_buf
, write_buf
, burst_cap
;
760 int ret
= 0, timeout
;
762 if (netif_msg_ifup(dev
))
763 devdbg(dev
, "entering smsc95xx_reset");
765 write_buf
= HW_CFG_LRST_
;
766 ret
= smsc95xx_write_reg(dev
, HW_CFG
, write_buf
);
768 devwarn(dev
, "Failed to write HW_CFG_LRST_ bit in HW_CFG "
769 "register, ret = %d", ret
);
775 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
777 devwarn(dev
, "Failed to read HW_CFG: %d", ret
);
782 } while ((read_buf
& HW_CFG_LRST_
) && (timeout
< 100));
784 if (timeout
>= 100) {
785 devwarn(dev
, "timeout waiting for completion of Lite Reset");
789 write_buf
= PM_CTL_PHY_RST_
;
790 ret
= smsc95xx_write_reg(dev
, PM_CTRL
, write_buf
);
792 devwarn(dev
, "Failed to write PM_CTRL: %d", ret
);
798 ret
= smsc95xx_read_reg(dev
, PM_CTRL
, &read_buf
);
800 devwarn(dev
, "Failed to read PM_CTRL: %d", ret
);
805 } while ((read_buf
& PM_CTL_PHY_RST_
) && (timeout
< 100));
807 if (timeout
>= 100) {
808 devwarn(dev
, "timeout waiting for PHY Reset");
812 smsc95xx_init_mac_address(dev
);
814 ret
= smsc95xx_set_mac_address(dev
);
818 if (netif_msg_ifup(dev
))
819 devdbg(dev
, "MAC Address: %pM", dev
->net
->dev_addr
);
821 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
823 devwarn(dev
, "Failed to read HW_CFG: %d", ret
);
827 if (netif_msg_ifup(dev
))
828 devdbg(dev
, "Read Value from HW_CFG : 0x%08x", read_buf
);
830 read_buf
|= HW_CFG_BIR_
;
832 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
834 devwarn(dev
, "Failed to write HW_CFG_BIR_ bit in HW_CFG "
835 "register, ret = %d", ret
);
839 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
841 devwarn(dev
, "Failed to read HW_CFG: %d", ret
);
844 if (netif_msg_ifup(dev
))
845 devdbg(dev
, "Read Value from HW_CFG after writing "
846 "HW_CFG_BIR_: 0x%08x", read_buf
);
850 dev
->rx_urb_size
= MAX_SINGLE_PACKET_SIZE
;
851 } else if (dev
->udev
->speed
== USB_SPEED_HIGH
) {
852 burst_cap
= DEFAULT_HS_BURST_CAP_SIZE
/ HS_USB_PKT_SIZE
;
853 dev
->rx_urb_size
= DEFAULT_HS_BURST_CAP_SIZE
;
855 burst_cap
= DEFAULT_FS_BURST_CAP_SIZE
/ FS_USB_PKT_SIZE
;
856 dev
->rx_urb_size
= DEFAULT_FS_BURST_CAP_SIZE
;
859 if (netif_msg_ifup(dev
))
860 devdbg(dev
, "rx_urb_size=%ld", (ulong
)dev
->rx_urb_size
);
862 ret
= smsc95xx_write_reg(dev
, BURST_CAP
, burst_cap
);
864 devwarn(dev
, "Failed to write BURST_CAP: %d", ret
);
868 ret
= smsc95xx_read_reg(dev
, BURST_CAP
, &read_buf
);
870 devwarn(dev
, "Failed to read BURST_CAP: %d", ret
);
873 if (netif_msg_ifup(dev
))
874 devdbg(dev
, "Read Value from BURST_CAP after writing: 0x%08x",
877 read_buf
= DEFAULT_BULK_IN_DELAY
;
878 ret
= smsc95xx_write_reg(dev
, BULK_IN_DLY
, read_buf
);
880 devwarn(dev
, "ret = %d", ret
);
884 ret
= smsc95xx_read_reg(dev
, BULK_IN_DLY
, &read_buf
);
886 devwarn(dev
, "Failed to read BULK_IN_DLY: %d", ret
);
889 if (netif_msg_ifup(dev
))
890 devdbg(dev
, "Read Value from BULK_IN_DLY after writing: "
893 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
895 devwarn(dev
, "Failed to read HW_CFG: %d", ret
);
898 if (netif_msg_ifup(dev
))
899 devdbg(dev
, "Read Value from HW_CFG: 0x%08x", read_buf
);
902 read_buf
|= (HW_CFG_MEF_
| HW_CFG_BCE_
);
904 read_buf
&= ~HW_CFG_RXDOFF_
;
906 /* set Rx data offset=2, Make IP header aligns on word boundary. */
907 read_buf
|= NET_IP_ALIGN
<< 9;
909 ret
= smsc95xx_write_reg(dev
, HW_CFG
, read_buf
);
911 devwarn(dev
, "Failed to write HW_CFG register, ret=%d", ret
);
915 ret
= smsc95xx_read_reg(dev
, HW_CFG
, &read_buf
);
917 devwarn(dev
, "Failed to read HW_CFG: %d", ret
);
920 if (netif_msg_ifup(dev
))
921 devdbg(dev
, "Read Value from HW_CFG after writing: 0x%08x",
924 write_buf
= 0xFFFFFFFF;
925 ret
= smsc95xx_write_reg(dev
, INT_STS
, write_buf
);
927 devwarn(dev
, "Failed to write INT_STS register, ret=%d", ret
);
931 ret
= smsc95xx_read_reg(dev
, ID_REV
, &read_buf
);
933 devwarn(dev
, "Failed to read ID_REV: %d", ret
);
936 if (netif_msg_ifup(dev
))
937 devdbg(dev
, "ID_REV = 0x%08x", read_buf
);
939 /* Configure GPIO pins as LED outputs */
940 write_buf
= LED_GPIO_CFG_SPD_LED
| LED_GPIO_CFG_LNK_LED
|
941 LED_GPIO_CFG_FDX_LED
;
942 ret
= smsc95xx_write_reg(dev
, LED_GPIO_CFG
, write_buf
);
944 devwarn(dev
, "Failed to write LED_GPIO_CFG register, ret=%d",
951 ret
= smsc95xx_write_reg(dev
, FLOW
, write_buf
);
953 devwarn(dev
, "Failed to write FLOW: %d", ret
);
957 read_buf
= AFC_CFG_DEFAULT
;
958 ret
= smsc95xx_write_reg(dev
, AFC_CFG
, read_buf
);
960 devwarn(dev
, "Failed to write AFC_CFG: %d", ret
);
964 /* Don't need mac_cr_lock during initialisation */
965 ret
= smsc95xx_read_reg(dev
, MAC_CR
, &pdata
->mac_cr
);
967 devwarn(dev
, "Failed to read MAC_CR: %d", ret
);
973 write_buf
= (u32
)ETH_P_8021Q
;
974 ret
= smsc95xx_write_reg(dev
, VLAN1
, write_buf
);
976 devwarn(dev
, "Failed to write VAN1: %d", ret
);
980 /* Enable or disable checksum offload engines */
981 ethtool_op_set_tx_hw_csum(netdev
, pdata
->use_tx_csum
);
982 ret
= smsc95xx_set_csums(dev
);
984 devwarn(dev
, "Failed to set csum offload: %d", ret
);
988 smsc95xx_set_multicast(dev
->net
);
990 if (smsc95xx_phy_initialize(dev
) < 0)
993 ret
= smsc95xx_read_reg(dev
, INT_EP_CTL
, &read_buf
);
995 devwarn(dev
, "Failed to read INT_EP_CTL: %d", ret
);
999 /* enable PHY interrupts */
1000 read_buf
|= INT_EP_CTL_PHY_INT_
;
1002 ret
= smsc95xx_write_reg(dev
, INT_EP_CTL
, read_buf
);
1004 devwarn(dev
, "Failed to write INT_EP_CTL: %d", ret
);
1008 smsc95xx_start_tx_path(dev
);
1009 smsc95xx_start_rx_path(dev
);
1011 if (netif_msg_ifup(dev
))
1012 devdbg(dev
, "smsc95xx_reset, return 0");
1016 static const struct net_device_ops smsc95xx_netdev_ops
= {
1017 .ndo_open
= usbnet_open
,
1018 .ndo_stop
= usbnet_stop
,
1019 .ndo_start_xmit
= usbnet_start_xmit
,
1020 .ndo_tx_timeout
= usbnet_tx_timeout
,
1021 .ndo_change_mtu
= usbnet_change_mtu
,
1022 .ndo_set_mac_address
= eth_mac_addr
,
1023 .ndo_validate_addr
= eth_validate_addr
,
1024 .ndo_do_ioctl
= smsc95xx_ioctl
,
1025 .ndo_set_multicast_list
= smsc95xx_set_multicast
,
1028 static int smsc95xx_bind(struct usbnet
*dev
, struct usb_interface
*intf
)
1030 struct smsc95xx_priv
*pdata
= NULL
;
1033 printk(KERN_INFO SMSC_CHIPNAME
" v" SMSC_DRIVER_VERSION
"\n");
1035 ret
= usbnet_get_endpoints(dev
, intf
);
1037 devwarn(dev
, "usbnet_get_endpoints failed: %d", ret
);
1041 dev
->data
[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv
),
1044 pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1046 devwarn(dev
, "Unable to allocate struct smsc95xx_priv");
1050 spin_lock_init(&pdata
->mac_cr_lock
);
1052 pdata
->use_tx_csum
= DEFAULT_TX_CSUM_ENABLE
;
1053 pdata
->use_rx_csum
= DEFAULT_RX_CSUM_ENABLE
;
1055 /* Init all registers */
1056 ret
= smsc95xx_reset(dev
);
1058 dev
->net
->netdev_ops
= &smsc95xx_netdev_ops
;
1059 dev
->net
->ethtool_ops
= &smsc95xx_ethtool_ops
;
1060 dev
->net
->flags
|= IFF_MULTICAST
;
1061 dev
->net
->hard_header_len
+= SMSC95XX_TX_OVERHEAD
;
1065 static void smsc95xx_unbind(struct usbnet
*dev
, struct usb_interface
*intf
)
1067 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1069 if (netif_msg_ifdown(dev
))
1070 devdbg(dev
, "free pdata");
1077 static void smsc95xx_rx_csum_offload(struct sk_buff
*skb
)
1079 skb
->csum
= *(u16
*)(skb_tail_pointer(skb
) - 2);
1080 skb
->ip_summed
= CHECKSUM_COMPLETE
;
1081 skb_trim(skb
, skb
->len
- 2);
1084 static int smsc95xx_rx_fixup(struct usbnet
*dev
, struct sk_buff
*skb
)
1086 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1088 while (skb
->len
> 0) {
1089 u32 header
, align_count
;
1090 struct sk_buff
*ax_skb
;
1091 unsigned char *packet
;
1094 memcpy(&header
, skb
->data
, sizeof(header
));
1095 le32_to_cpus(&header
);
1096 skb_pull(skb
, 4 + NET_IP_ALIGN
);
1099 /* get the packet length */
1100 size
= (u16
)((header
& RX_STS_FL_
) >> 16);
1101 align_count
= (4 - ((size
+ NET_IP_ALIGN
) % 4)) % 4;
1103 if (unlikely(header
& RX_STS_ES_
)) {
1104 if (netif_msg_rx_err(dev
))
1105 devdbg(dev
, "Error header=0x%08x", header
);
1106 dev
->net
->stats
.rx_errors
++;
1107 dev
->net
->stats
.rx_dropped
++;
1109 if (header
& RX_STS_CRC_
) {
1110 dev
->net
->stats
.rx_crc_errors
++;
1112 if (header
& (RX_STS_TL_
| RX_STS_RF_
))
1113 dev
->net
->stats
.rx_frame_errors
++;
1115 if ((header
& RX_STS_LE_
) &&
1116 (!(header
& RX_STS_FT_
)))
1117 dev
->net
->stats
.rx_length_errors
++;
1120 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1121 if (unlikely(size
> (ETH_FRAME_LEN
+ 12))) {
1122 if (netif_msg_rx_err(dev
))
1123 devdbg(dev
, "size err header=0x%08x",
1128 /* last frame in this batch */
1129 if (skb
->len
== size
) {
1130 if (pdata
->use_rx_csum
)
1131 smsc95xx_rx_csum_offload(skb
);
1132 skb_trim(skb
, skb
->len
- 4); /* remove fcs */
1133 skb
->truesize
= size
+ sizeof(struct sk_buff
);
1138 ax_skb
= skb_clone(skb
, GFP_ATOMIC
);
1139 if (unlikely(!ax_skb
)) {
1140 devwarn(dev
, "Error allocating skb");
1145 ax_skb
->data
= packet
;
1146 skb_set_tail_pointer(ax_skb
, size
);
1148 if (pdata
->use_rx_csum
)
1149 smsc95xx_rx_csum_offload(ax_skb
);
1150 skb_trim(ax_skb
, ax_skb
->len
- 4); /* remove fcs */
1151 ax_skb
->truesize
= size
+ sizeof(struct sk_buff
);
1153 usbnet_skb_return(dev
, ax_skb
);
1156 skb_pull(skb
, size
);
1158 /* padding bytes before the next frame starts */
1160 skb_pull(skb
, align_count
);
1163 if (unlikely(skb
->len
< 0)) {
1164 devwarn(dev
, "invalid rx length<0 %d", skb
->len
);
1171 static u32
smsc95xx_calc_csum_preamble(struct sk_buff
*skb
)
1173 int len
= skb
->data
- skb
->head
;
1174 u16 high_16
= (u16
)(skb
->csum_offset
+ skb
->csum_start
- len
);
1175 u16 low_16
= (u16
)(skb
->csum_start
- len
);
1176 return (high_16
<< 16) | low_16
;
1179 static struct sk_buff
*smsc95xx_tx_fixup(struct usbnet
*dev
,
1180 struct sk_buff
*skb
, gfp_t flags
)
1182 struct smsc95xx_priv
*pdata
= (struct smsc95xx_priv
*)(dev
->data
[0]);
1183 bool csum
= pdata
->use_tx_csum
&& (skb
->ip_summed
== CHECKSUM_PARTIAL
);
1184 int overhead
= csum
? SMSC95XX_TX_OVERHEAD_CSUM
: SMSC95XX_TX_OVERHEAD
;
1185 u32 tx_cmd_a
, tx_cmd_b
;
1187 /* We do not advertise SG, so skbs should be already linearized */
1188 BUG_ON(skb_shinfo(skb
)->nr_frags
);
1190 if (skb_headroom(skb
) < overhead
) {
1191 struct sk_buff
*skb2
= skb_copy_expand(skb
,
1192 overhead
, 0, flags
);
1193 dev_kfree_skb_any(skb
);
1200 u32 csum_preamble
= smsc95xx_calc_csum_preamble(skb
);
1202 memcpy(skb
->data
, &csum_preamble
, 4);
1206 tx_cmd_b
= (u32
)(skb
->len
- 4);
1208 tx_cmd_b
|= TX_CMD_B_CSUM_ENABLE
;
1209 cpu_to_le32s(&tx_cmd_b
);
1210 memcpy(skb
->data
, &tx_cmd_b
, 4);
1213 tx_cmd_a
= (u32
)(skb
->len
- 8) | TX_CMD_A_FIRST_SEG_
|
1215 cpu_to_le32s(&tx_cmd_a
);
1216 memcpy(skb
->data
, &tx_cmd_a
, 4);
1221 static const struct driver_info smsc95xx_info
= {
1222 .description
= "smsc95xx USB 2.0 Ethernet",
1223 .bind
= smsc95xx_bind
,
1224 .unbind
= smsc95xx_unbind
,
1225 .link_reset
= smsc95xx_link_reset
,
1226 .reset
= smsc95xx_reset
,
1227 .rx_fixup
= smsc95xx_rx_fixup
,
1228 .tx_fixup
= smsc95xx_tx_fixup
,
1229 .status
= smsc95xx_status
,
1230 .flags
= FLAG_ETHER
| FLAG_SEND_ZLP
,
1233 static const struct usb_device_id products
[] = {
1235 /* SMSC9500 USB Ethernet Device */
1236 USB_DEVICE(0x0424, 0x9500),
1237 .driver_info
= (unsigned long) &smsc95xx_info
,
1240 /* SMSC9505 USB Ethernet Device */
1241 USB_DEVICE(0x0424, 0x9505),
1242 .driver_info
= (unsigned long) &smsc95xx_info
,
1245 /* SMSC9500A USB Ethernet Device */
1246 USB_DEVICE(0x0424, 0x9E00),
1247 .driver_info
= (unsigned long) &smsc95xx_info
,
1250 /* SMSC9505A USB Ethernet Device */
1251 USB_DEVICE(0x0424, 0x9E01),
1252 .driver_info
= (unsigned long) &smsc95xx_info
,
1255 /* SMSC9512/9514 USB Hub & Ethernet Device */
1256 USB_DEVICE(0x0424, 0xec00),
1257 .driver_info
= (unsigned long) &smsc95xx_info
,
1260 /* SMSC9500 USB Ethernet Device (SAL10) */
1261 USB_DEVICE(0x0424, 0x9900),
1262 .driver_info
= (unsigned long) &smsc95xx_info
,
1265 /* SMSC9505 USB Ethernet Device (SAL10) */
1266 USB_DEVICE(0x0424, 0x9901),
1267 .driver_info
= (unsigned long) &smsc95xx_info
,
1270 /* SMSC9500A USB Ethernet Device (SAL10) */
1271 USB_DEVICE(0x0424, 0x9902),
1272 .driver_info
= (unsigned long) &smsc95xx_info
,
1275 /* SMSC9505A USB Ethernet Device (SAL10) */
1276 USB_DEVICE(0x0424, 0x9903),
1277 .driver_info
= (unsigned long) &smsc95xx_info
,
1280 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1281 USB_DEVICE(0x0424, 0x9904),
1282 .driver_info
= (unsigned long) &smsc95xx_info
,
1285 /* SMSC9500A USB Ethernet Device (HAL) */
1286 USB_DEVICE(0x0424, 0x9905),
1287 .driver_info
= (unsigned long) &smsc95xx_info
,
1290 /* SMSC9505A USB Ethernet Device (HAL) */
1291 USB_DEVICE(0x0424, 0x9906),
1292 .driver_info
= (unsigned long) &smsc95xx_info
,
1295 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1296 USB_DEVICE(0x0424, 0x9907),
1297 .driver_info
= (unsigned long) &smsc95xx_info
,
1300 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1301 USB_DEVICE(0x0424, 0x9908),
1302 .driver_info
= (unsigned long) &smsc95xx_info
,
1305 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
1306 USB_DEVICE(0x0424, 0x9909),
1307 .driver_info
= (unsigned long) &smsc95xx_info
,
1311 MODULE_DEVICE_TABLE(usb
, products
);
1313 static struct usb_driver smsc95xx_driver
= {
1315 .id_table
= products
,
1316 .probe
= usbnet_probe
,
1317 .suspend
= usbnet_suspend
,
1318 .resume
= usbnet_resume
,
1319 .disconnect
= usbnet_disconnect
,
1322 static int __init
smsc95xx_init(void)
1324 return usb_register(&smsc95xx_driver
);
1326 module_init(smsc95xx_init
);
1328 static void __exit
smsc95xx_exit(void)
1330 usb_deregister(&smsc95xx_driver
);
1332 module_exit(smsc95xx_exit
);
1334 MODULE_AUTHOR("Nancy Lin");
1335 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>");
1336 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
1337 MODULE_LICENSE("GPL");