xref: /openbmc/linux/drivers/net/usb/smsc95xx.c (revision e360a8b4eddc8bc6d25f98628fffc803b6ea7f28)
12f7ca802SSteve Glendinning  /***************************************************************************
22f7ca802SSteve Glendinning  *
32f7ca802SSteve Glendinning  * Copyright (C) 2007-2008 SMSC
42f7ca802SSteve Glendinning  *
52f7ca802SSteve Glendinning  * This program is free software; you can redistribute it and/or
62f7ca802SSteve Glendinning  * modify it under the terms of the GNU General Public License
72f7ca802SSteve Glendinning  * as published by the Free Software Foundation; either version 2
82f7ca802SSteve Glendinning  * of the License, or (at your option) any later version.
92f7ca802SSteve Glendinning  *
102f7ca802SSteve Glendinning  * This program is distributed in the hope that it will be useful,
112f7ca802SSteve Glendinning  * but WITHOUT ANY WARRANTY; without even the implied warranty of
122f7ca802SSteve Glendinning  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
132f7ca802SSteve Glendinning  * GNU General Public License for more details.
142f7ca802SSteve Glendinning  *
152f7ca802SSteve Glendinning  * You should have received a copy of the GNU General Public License
162f7ca802SSteve Glendinning  * along with this program; if not, write to the Free Software
172f7ca802SSteve Glendinning  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
182f7ca802SSteve Glendinning  *
192f7ca802SSteve Glendinning  *****************************************************************************/
202f7ca802SSteve Glendinning 
212f7ca802SSteve Glendinning #include <linux/module.h>
222f7ca802SSteve Glendinning #include <linux/kmod.h>
232f7ca802SSteve Glendinning #include <linux/init.h>
242f7ca802SSteve Glendinning #include <linux/netdevice.h>
252f7ca802SSteve Glendinning #include <linux/etherdevice.h>
262f7ca802SSteve Glendinning #include <linux/ethtool.h>
272f7ca802SSteve Glendinning #include <linux/mii.h>
282f7ca802SSteve Glendinning #include <linux/usb.h>
29bbd9f9eeSSteve Glendinning #include <linux/bitrev.h>
30bbd9f9eeSSteve Glendinning #include <linux/crc16.h>
312f7ca802SSteve Glendinning #include <linux/crc32.h>
322f7ca802SSteve Glendinning #include <linux/usb/usbnet.h>
335a0e3ad6STejun Heo #include <linux/slab.h>
342f7ca802SSteve Glendinning #include "smsc95xx.h"
352f7ca802SSteve Glendinning 
362f7ca802SSteve Glendinning #define SMSC_CHIPNAME			"smsc95xx"
37f7b29271SSteve Glendinning #define SMSC_DRIVER_VERSION		"1.0.4"
382f7ca802SSteve Glendinning #define HS_USB_PKT_SIZE			(512)
392f7ca802SSteve Glendinning #define FS_USB_PKT_SIZE			(64)
402f7ca802SSteve Glendinning #define DEFAULT_HS_BURST_CAP_SIZE	(16 * 1024 + 5 * HS_USB_PKT_SIZE)
412f7ca802SSteve Glendinning #define DEFAULT_FS_BURST_CAP_SIZE	(6 * 1024 + 33 * FS_USB_PKT_SIZE)
422f7ca802SSteve Glendinning #define DEFAULT_BULK_IN_DELAY		(0x00002000)
432f7ca802SSteve Glendinning #define MAX_SINGLE_PACKET_SIZE		(2048)
442f7ca802SSteve Glendinning #define LAN95XX_EEPROM_MAGIC		(0x9500)
452f7ca802SSteve Glendinning #define EEPROM_MAC_OFFSET		(0x01)
46f7b29271SSteve Glendinning #define DEFAULT_TX_CSUM_ENABLE		(true)
472f7ca802SSteve Glendinning #define DEFAULT_RX_CSUM_ENABLE		(true)
482f7ca802SSteve Glendinning #define SMSC95XX_INTERNAL_PHY_ID	(1)
492f7ca802SSteve Glendinning #define SMSC95XX_TX_OVERHEAD		(8)
50f7b29271SSteve Glendinning #define SMSC95XX_TX_OVERHEAD_CSUM	(12)
51e5e3af83SSteve Glendinning #define SUPPORTED_WAKE			(WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
52bbd9f9eeSSteve Glendinning 					 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
532f7ca802SSteve Glendinning 
549ebca507SSteve Glendinning #define FEATURE_8_WAKEUP_FILTERS	(0x01)
559ebca507SSteve Glendinning #define FEATURE_PHY_NLP_CROSSOVER	(0x02)
569ebca507SSteve Glendinning #define FEATURE_AUTOSUSPEND		(0x04)
579ebca507SSteve Glendinning 
582f7ca802SSteve Glendinning struct smsc95xx_priv {
592f7ca802SSteve Glendinning 	u32 mac_cr;
603c0f3c60SMarc Zyngier 	u32 hash_hi;
613c0f3c60SMarc Zyngier 	u32 hash_lo;
62e0e474a8SSteve Glendinning 	u32 wolopts;
632f7ca802SSteve Glendinning 	spinlock_t mac_cr_lock;
649ebca507SSteve Glendinning 	u8 features;
652f7ca802SSteve Glendinning };
662f7ca802SSteve Glendinning 
67eb939922SRusty Russell static bool turbo_mode = true;
682f7ca802SSteve Glendinning module_param(turbo_mode, bool, 0644);
692f7ca802SSteve Glendinning MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
702f7ca802SSteve Glendinning 
71ec32115dSMing Lei static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
72ec32115dSMing Lei 					    u32 *data, int in_pm)
732f7ca802SSteve Glendinning {
7472108fd2SMing Lei 	u32 buf;
752f7ca802SSteve Glendinning 	int ret;
76ec32115dSMing Lei 	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
772f7ca802SSteve Glendinning 
782f7ca802SSteve Glendinning 	BUG_ON(!dev);
792f7ca802SSteve Glendinning 
80ec32115dSMing Lei 	if (!in_pm)
81ec32115dSMing Lei 		fn = usbnet_read_cmd;
82ec32115dSMing Lei 	else
83ec32115dSMing Lei 		fn = usbnet_read_cmd_nopm;
84ec32115dSMing Lei 
85ec32115dSMing Lei 	ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
86ec32115dSMing Lei 		 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
8772108fd2SMing Lei 		 0, index, &buf, 4);
882f7ca802SSteve Glendinning 	if (unlikely(ret < 0))
891e1d7412SJoe Perches 		netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
901e1d7412SJoe Perches 			    index, ret);
912f7ca802SSteve Glendinning 
9272108fd2SMing Lei 	le32_to_cpus(&buf);
9372108fd2SMing Lei 	*data = buf;
942f7ca802SSteve Glendinning 
952f7ca802SSteve Glendinning 	return ret;
962f7ca802SSteve Glendinning }
972f7ca802SSteve Glendinning 
98ec32115dSMing Lei static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
99ec32115dSMing Lei 					     u32 data, int in_pm)
1002f7ca802SSteve Glendinning {
10172108fd2SMing Lei 	u32 buf;
1022f7ca802SSteve Glendinning 	int ret;
103ec32115dSMing Lei 	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
1042f7ca802SSteve Glendinning 
1052f7ca802SSteve Glendinning 	BUG_ON(!dev);
1062f7ca802SSteve Glendinning 
107ec32115dSMing Lei 	if (!in_pm)
108ec32115dSMing Lei 		fn = usbnet_write_cmd;
109ec32115dSMing Lei 	else
110ec32115dSMing Lei 		fn = usbnet_write_cmd_nopm;
111ec32115dSMing Lei 
11272108fd2SMing Lei 	buf = data;
11372108fd2SMing Lei 	cpu_to_le32s(&buf);
1142f7ca802SSteve Glendinning 
115ec32115dSMing Lei 	ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
116ec32115dSMing Lei 		 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
11772108fd2SMing Lei 		 0, index, &buf, 4);
1182f7ca802SSteve Glendinning 	if (unlikely(ret < 0))
1191e1d7412SJoe Perches 		netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
1201e1d7412SJoe Perches 			    index, ret);
1212f7ca802SSteve Glendinning 
1222f7ca802SSteve Glendinning 	return ret;
1232f7ca802SSteve Glendinning }
1242f7ca802SSteve Glendinning 
125ec32115dSMing Lei static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
126ec32115dSMing Lei 					       u32 *data)
127ec32115dSMing Lei {
128ec32115dSMing Lei 	return __smsc95xx_read_reg(dev, index, data, 1);
129ec32115dSMing Lei }
130ec32115dSMing Lei 
131ec32115dSMing Lei static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
132ec32115dSMing Lei 						u32 data)
133ec32115dSMing Lei {
134ec32115dSMing Lei 	return __smsc95xx_write_reg(dev, index, data, 1);
135ec32115dSMing Lei }
136ec32115dSMing Lei 
137ec32115dSMing Lei static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
138ec32115dSMing Lei 					  u32 *data)
139ec32115dSMing Lei {
140ec32115dSMing Lei 	return __smsc95xx_read_reg(dev, index, data, 0);
141ec32115dSMing Lei }
142ec32115dSMing Lei 
143ec32115dSMing Lei static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
144ec32115dSMing Lei 					   u32 data)
145ec32115dSMing Lei {
146ec32115dSMing Lei 	return __smsc95xx_write_reg(dev, index, data, 0);
147ec32115dSMing Lei }
148e0e474a8SSteve Glendinning 
1492f7ca802SSteve Glendinning /* Loop until the read is completed with timeout
1502f7ca802SSteve Glendinning  * called with phy_mutex held */
151e5e3af83SSteve Glendinning static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
152e5e3af83SSteve Glendinning 						     int in_pm)
1532f7ca802SSteve Glendinning {
1542f7ca802SSteve Glendinning 	unsigned long start_time = jiffies;
1552f7ca802SSteve Glendinning 	u32 val;
156769ea6d8SSteve Glendinning 	int ret;
1572f7ca802SSteve Glendinning 
1582f7ca802SSteve Glendinning 	do {
159e5e3af83SSteve Glendinning 		ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm);
160b052e073SSteve Glendinning 		if (ret < 0) {
161b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error reading MII_ACCESS\n");
162b052e073SSteve Glendinning 			return ret;
163b052e073SSteve Glendinning 		}
164b052e073SSteve Glendinning 
1652f7ca802SSteve Glendinning 		if (!(val & MII_BUSY_))
1662f7ca802SSteve Glendinning 			return 0;
1672f7ca802SSteve Glendinning 	} while (!time_after(jiffies, start_time + HZ));
1682f7ca802SSteve Glendinning 
1692f7ca802SSteve Glendinning 	return -EIO;
1702f7ca802SSteve Glendinning }
1712f7ca802SSteve Glendinning 
172e5e3af83SSteve Glendinning static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
173e5e3af83SSteve Glendinning 				int in_pm)
1742f7ca802SSteve Glendinning {
1752f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
1762f7ca802SSteve Glendinning 	u32 val, addr;
177769ea6d8SSteve Glendinning 	int ret;
1782f7ca802SSteve Glendinning 
1792f7ca802SSteve Glendinning 	mutex_lock(&dev->phy_mutex);
1802f7ca802SSteve Glendinning 
1812f7ca802SSteve Glendinning 	/* confirm MII not busy */
182e5e3af83SSteve Glendinning 	ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
183b052e073SSteve Glendinning 	if (ret < 0) {
184b052e073SSteve Glendinning 		netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
185b052e073SSteve Glendinning 		goto done;
186b052e073SSteve Glendinning 	}
1872f7ca802SSteve Glendinning 
1882f7ca802SSteve Glendinning 	/* set the address, index & direction (read from PHY) */
1892f7ca802SSteve Glendinning 	phy_id &= dev->mii.phy_id_mask;
1902f7ca802SSteve Glendinning 	idx &= dev->mii.reg_num_mask;
19180928805SSteve Glendinning 	addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
192e5e3af83SSteve Glendinning 	ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
193b052e073SSteve Glendinning 	if (ret < 0) {
194b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error writing MII_ADDR\n");
195b052e073SSteve Glendinning 		goto done;
196b052e073SSteve Glendinning 	}
1972f7ca802SSteve Glendinning 
198e5e3af83SSteve Glendinning 	ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
199b052e073SSteve Glendinning 	if (ret < 0) {
200b052e073SSteve Glendinning 		netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
201b052e073SSteve Glendinning 		goto done;
202b052e073SSteve Glendinning 	}
203769ea6d8SSteve Glendinning 
204e5e3af83SSteve Glendinning 	ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm);
205b052e073SSteve Glendinning 	if (ret < 0) {
206b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error reading MII_DATA\n");
207b052e073SSteve Glendinning 		goto done;
208b052e073SSteve Glendinning 	}
209769ea6d8SSteve Glendinning 
210769ea6d8SSteve Glendinning 	ret = (u16)(val & 0xFFFF);
211769ea6d8SSteve Glendinning 
212769ea6d8SSteve Glendinning done:
2132f7ca802SSteve Glendinning 	mutex_unlock(&dev->phy_mutex);
214769ea6d8SSteve Glendinning 	return ret;
2152f7ca802SSteve Glendinning }
2162f7ca802SSteve Glendinning 
217e5e3af83SSteve Glendinning static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
218e5e3af83SSteve Glendinning 				  int idx, int regval, int in_pm)
2192f7ca802SSteve Glendinning {
2202f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
2212f7ca802SSteve Glendinning 	u32 val, addr;
222769ea6d8SSteve Glendinning 	int ret;
2232f7ca802SSteve Glendinning 
2242f7ca802SSteve Glendinning 	mutex_lock(&dev->phy_mutex);
2252f7ca802SSteve Glendinning 
2262f7ca802SSteve Glendinning 	/* confirm MII not busy */
227e5e3af83SSteve Glendinning 	ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
228b052e073SSteve Glendinning 	if (ret < 0) {
229b052e073SSteve Glendinning 		netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
230b052e073SSteve Glendinning 		goto done;
231b052e073SSteve Glendinning 	}
2322f7ca802SSteve Glendinning 
2332f7ca802SSteve Glendinning 	val = regval;
234e5e3af83SSteve Glendinning 	ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm);
235b052e073SSteve Glendinning 	if (ret < 0) {
236b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error writing MII_DATA\n");
237b052e073SSteve Glendinning 		goto done;
238b052e073SSteve Glendinning 	}
2392f7ca802SSteve Glendinning 
2402f7ca802SSteve Glendinning 	/* set the address, index & direction (write to PHY) */
2412f7ca802SSteve Glendinning 	phy_id &= dev->mii.phy_id_mask;
2422f7ca802SSteve Glendinning 	idx &= dev->mii.reg_num_mask;
24380928805SSteve Glendinning 	addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
244e5e3af83SSteve Glendinning 	ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
245b052e073SSteve Glendinning 	if (ret < 0) {
246b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error writing MII_ADDR\n");
247b052e073SSteve Glendinning 		goto done;
248b052e073SSteve Glendinning 	}
2492f7ca802SSteve Glendinning 
250e5e3af83SSteve Glendinning 	ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
251b052e073SSteve Glendinning 	if (ret < 0) {
252b052e073SSteve Glendinning 		netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
253b052e073SSteve Glendinning 		goto done;
254b052e073SSteve Glendinning 	}
2552f7ca802SSteve Glendinning 
256769ea6d8SSteve Glendinning done:
2572f7ca802SSteve Glendinning 	mutex_unlock(&dev->phy_mutex);
2582f7ca802SSteve Glendinning }
2592f7ca802SSteve Glendinning 
260e5e3af83SSteve Glendinning static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
261e5e3af83SSteve Glendinning 				   int idx)
262e5e3af83SSteve Glendinning {
263e5e3af83SSteve Glendinning 	return __smsc95xx_mdio_read(netdev, phy_id, idx, 1);
264e5e3af83SSteve Glendinning }
265e5e3af83SSteve Glendinning 
266e5e3af83SSteve Glendinning static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
267e5e3af83SSteve Glendinning 				     int idx, int regval)
268e5e3af83SSteve Glendinning {
269e5e3af83SSteve Glendinning 	__smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1);
270e5e3af83SSteve Glendinning }
271e5e3af83SSteve Glendinning 
272e5e3af83SSteve Glendinning static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
273e5e3af83SSteve Glendinning {
274e5e3af83SSteve Glendinning 	return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
275e5e3af83SSteve Glendinning }
276e5e3af83SSteve Glendinning 
277e5e3af83SSteve Glendinning static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
278e5e3af83SSteve Glendinning 				int regval)
279e5e3af83SSteve Glendinning {
280e5e3af83SSteve Glendinning 	__smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
281e5e3af83SSteve Glendinning }
282e5e3af83SSteve Glendinning 
283769ea6d8SSteve Glendinning static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
2842f7ca802SSteve Glendinning {
2852f7ca802SSteve Glendinning 	unsigned long start_time = jiffies;
2862f7ca802SSteve Glendinning 	u32 val;
287769ea6d8SSteve Glendinning 	int ret;
2882f7ca802SSteve Glendinning 
2892f7ca802SSteve Glendinning 	do {
290769ea6d8SSteve Glendinning 		ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
291b052e073SSteve Glendinning 		if (ret < 0) {
292b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error reading E2P_CMD\n");
293b052e073SSteve Glendinning 			return ret;
294b052e073SSteve Glendinning 		}
295b052e073SSteve Glendinning 
2962f7ca802SSteve Glendinning 		if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
2972f7ca802SSteve Glendinning 			break;
2982f7ca802SSteve Glendinning 		udelay(40);
2992f7ca802SSteve Glendinning 	} while (!time_after(jiffies, start_time + HZ));
3002f7ca802SSteve Glendinning 
3012f7ca802SSteve Glendinning 	if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
30260b86755SJoe Perches 		netdev_warn(dev->net, "EEPROM read operation timeout\n");
3032f7ca802SSteve Glendinning 		return -EIO;
3042f7ca802SSteve Glendinning 	}
3052f7ca802SSteve Glendinning 
3062f7ca802SSteve Glendinning 	return 0;
3072f7ca802SSteve Glendinning }
3082f7ca802SSteve Glendinning 
309769ea6d8SSteve Glendinning static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
3102f7ca802SSteve Glendinning {
3112f7ca802SSteve Glendinning 	unsigned long start_time = jiffies;
3122f7ca802SSteve Glendinning 	u32 val;
313769ea6d8SSteve Glendinning 	int ret;
3142f7ca802SSteve Glendinning 
3152f7ca802SSteve Glendinning 	do {
316769ea6d8SSteve Glendinning 		ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
317b052e073SSteve Glendinning 		if (ret < 0) {
318b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error reading E2P_CMD\n");
319b052e073SSteve Glendinning 			return ret;
320b052e073SSteve Glendinning 		}
3212f7ca802SSteve Glendinning 
3222f7ca802SSteve Glendinning 		if (!(val & E2P_CMD_BUSY_))
3232f7ca802SSteve Glendinning 			return 0;
3242f7ca802SSteve Glendinning 
3252f7ca802SSteve Glendinning 		udelay(40);
3262f7ca802SSteve Glendinning 	} while (!time_after(jiffies, start_time + HZ));
3272f7ca802SSteve Glendinning 
32860b86755SJoe Perches 	netdev_warn(dev->net, "EEPROM is busy\n");
3292f7ca802SSteve Glendinning 	return -EIO;
3302f7ca802SSteve Glendinning }
3312f7ca802SSteve Glendinning 
3322f7ca802SSteve Glendinning static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
3332f7ca802SSteve Glendinning 				u8 *data)
3342f7ca802SSteve Glendinning {
3352f7ca802SSteve Glendinning 	u32 val;
3362f7ca802SSteve Glendinning 	int i, ret;
3372f7ca802SSteve Glendinning 
3382f7ca802SSteve Glendinning 	BUG_ON(!dev);
3392f7ca802SSteve Glendinning 	BUG_ON(!data);
3402f7ca802SSteve Glendinning 
3412f7ca802SSteve Glendinning 	ret = smsc95xx_eeprom_confirm_not_busy(dev);
3422f7ca802SSteve Glendinning 	if (ret)
3432f7ca802SSteve Glendinning 		return ret;
3442f7ca802SSteve Glendinning 
3452f7ca802SSteve Glendinning 	for (i = 0; i < length; i++) {
3462f7ca802SSteve Glendinning 		val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
347769ea6d8SSteve Glendinning 		ret = smsc95xx_write_reg(dev, E2P_CMD, val);
348b052e073SSteve Glendinning 		if (ret < 0) {
349b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error writing E2P_CMD\n");
350b052e073SSteve Glendinning 			return ret;
351b052e073SSteve Glendinning 		}
3522f7ca802SSteve Glendinning 
3532f7ca802SSteve Glendinning 		ret = smsc95xx_wait_eeprom(dev);
3542f7ca802SSteve Glendinning 		if (ret < 0)
3552f7ca802SSteve Glendinning 			return ret;
3562f7ca802SSteve Glendinning 
357769ea6d8SSteve Glendinning 		ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
358b052e073SSteve Glendinning 		if (ret < 0) {
359b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error reading E2P_DATA\n");
360b052e073SSteve Glendinning 			return ret;
361b052e073SSteve Glendinning 		}
3622f7ca802SSteve Glendinning 
3632f7ca802SSteve Glendinning 		data[i] = val & 0xFF;
3642f7ca802SSteve Glendinning 		offset++;
3652f7ca802SSteve Glendinning 	}
3662f7ca802SSteve Glendinning 
3672f7ca802SSteve Glendinning 	return 0;
3682f7ca802SSteve Glendinning }
3692f7ca802SSteve Glendinning 
3702f7ca802SSteve Glendinning static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
3712f7ca802SSteve Glendinning 				 u8 *data)
3722f7ca802SSteve Glendinning {
3732f7ca802SSteve Glendinning 	u32 val;
3742f7ca802SSteve Glendinning 	int i, ret;
3752f7ca802SSteve Glendinning 
3762f7ca802SSteve Glendinning 	BUG_ON(!dev);
3772f7ca802SSteve Glendinning 	BUG_ON(!data);
3782f7ca802SSteve Glendinning 
3792f7ca802SSteve Glendinning 	ret = smsc95xx_eeprom_confirm_not_busy(dev);
3802f7ca802SSteve Glendinning 	if (ret)
3812f7ca802SSteve Glendinning 		return ret;
3822f7ca802SSteve Glendinning 
3832f7ca802SSteve Glendinning 	/* Issue write/erase enable command */
3842f7ca802SSteve Glendinning 	val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
385769ea6d8SSteve Glendinning 	ret = smsc95xx_write_reg(dev, E2P_CMD, val);
386b052e073SSteve Glendinning 	if (ret < 0) {
387b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error writing E2P_DATA\n");
388b052e073SSteve Glendinning 		return ret;
389b052e073SSteve Glendinning 	}
3902f7ca802SSteve Glendinning 
3912f7ca802SSteve Glendinning 	ret = smsc95xx_wait_eeprom(dev);
3922f7ca802SSteve Glendinning 	if (ret < 0)
3932f7ca802SSteve Glendinning 		return ret;
3942f7ca802SSteve Glendinning 
3952f7ca802SSteve Glendinning 	for (i = 0; i < length; i++) {
3962f7ca802SSteve Glendinning 
3972f7ca802SSteve Glendinning 		/* Fill data register */
3982f7ca802SSteve Glendinning 		val = data[i];
399769ea6d8SSteve Glendinning 		ret = smsc95xx_write_reg(dev, E2P_DATA, val);
400b052e073SSteve Glendinning 		if (ret < 0) {
401b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error writing E2P_DATA\n");
402b052e073SSteve Glendinning 			return ret;
403b052e073SSteve Glendinning 		}
4042f7ca802SSteve Glendinning 
4052f7ca802SSteve Glendinning 		/* Send "write" command */
4062f7ca802SSteve Glendinning 		val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
407769ea6d8SSteve Glendinning 		ret = smsc95xx_write_reg(dev, E2P_CMD, val);
408b052e073SSteve Glendinning 		if (ret < 0) {
409b052e073SSteve Glendinning 			netdev_warn(dev->net, "Error writing E2P_CMD\n");
410b052e073SSteve Glendinning 			return ret;
411b052e073SSteve Glendinning 		}
4122f7ca802SSteve Glendinning 
4132f7ca802SSteve Glendinning 		ret = smsc95xx_wait_eeprom(dev);
4142f7ca802SSteve Glendinning 		if (ret < 0)
4152f7ca802SSteve Glendinning 			return ret;
4162f7ca802SSteve Glendinning 
4172f7ca802SSteve Glendinning 		offset++;
4182f7ca802SSteve Glendinning 	}
4192f7ca802SSteve Glendinning 
4202f7ca802SSteve Glendinning 	return 0;
4212f7ca802SSteve Glendinning }
4222f7ca802SSteve Glendinning 
423769ea6d8SSteve Glendinning static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
4247b9e7580SSteve Glendinning 						 u32 data)
4252f7ca802SSteve Glendinning {
4261d74a6bdSSteve Glendinning 	const u16 size = 4;
4277b9e7580SSteve Glendinning 	u32 buf;
42872108fd2SMing Lei 	int ret;
4292f7ca802SSteve Glendinning 
4307b9e7580SSteve Glendinning 	buf = data;
4317b9e7580SSteve Glendinning 	cpu_to_le32s(&buf);
4327b9e7580SSteve Glendinning 
43372108fd2SMing Lei 	ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
43472108fd2SMing Lei 				     USB_DIR_OUT | USB_TYPE_VENDOR |
43572108fd2SMing Lei 				     USB_RECIP_DEVICE,
4367b9e7580SSteve Glendinning 				     0, index, &buf, size);
43772108fd2SMing Lei 	if (ret < 0)
43872108fd2SMing Lei 		netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
43972108fd2SMing Lei 			    ret);
44072108fd2SMing Lei 	return ret;
4412f7ca802SSteve Glendinning }
4422f7ca802SSteve Glendinning 
4432f7ca802SSteve Glendinning /* returns hash bit number for given MAC address
4442f7ca802SSteve Glendinning  * example:
4452f7ca802SSteve Glendinning  * 01 00 5E 00 00 01 -> returns bit number 31 */
4462f7ca802SSteve Glendinning static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
4472f7ca802SSteve Glendinning {
4482f7ca802SSteve Glendinning 	return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
4492f7ca802SSteve Glendinning }
4502f7ca802SSteve Glendinning 
4512f7ca802SSteve Glendinning static void smsc95xx_set_multicast(struct net_device *netdev)
4522f7ca802SSteve Glendinning {
4532f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
4542f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
4552f7ca802SSteve Glendinning 	unsigned long flags;
456769ea6d8SSteve Glendinning 	int ret;
4572f7ca802SSteve Glendinning 
4583c0f3c60SMarc Zyngier 	pdata->hash_hi = 0;
4593c0f3c60SMarc Zyngier 	pdata->hash_lo = 0;
4603c0f3c60SMarc Zyngier 
4612f7ca802SSteve Glendinning 	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
4622f7ca802SSteve Glendinning 
4632f7ca802SSteve Glendinning 	if (dev->net->flags & IFF_PROMISC) {
464a475f603SJoe Perches 		netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
4652f7ca802SSteve Glendinning 		pdata->mac_cr |= MAC_CR_PRMS_;
4662f7ca802SSteve Glendinning 		pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
4672f7ca802SSteve Glendinning 	} else if (dev->net->flags & IFF_ALLMULTI) {
468a475f603SJoe Perches 		netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
4692f7ca802SSteve Glendinning 		pdata->mac_cr |= MAC_CR_MCPAS_;
4702f7ca802SSteve Glendinning 		pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
4714cd24eafSJiri Pirko 	} else if (!netdev_mc_empty(dev->net)) {
47222bedad3SJiri Pirko 		struct netdev_hw_addr *ha;
4732f7ca802SSteve Glendinning 
4742f7ca802SSteve Glendinning 		pdata->mac_cr |= MAC_CR_HPFILT_;
4752f7ca802SSteve Glendinning 		pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
4762f7ca802SSteve Glendinning 
47722bedad3SJiri Pirko 		netdev_for_each_mc_addr(ha, netdev) {
47822bedad3SJiri Pirko 			u32 bitnum = smsc95xx_hash(ha->addr);
4792f7ca802SSteve Glendinning 			u32 mask = 0x01 << (bitnum & 0x1F);
4802f7ca802SSteve Glendinning 			if (bitnum & 0x20)
4813c0f3c60SMarc Zyngier 				pdata->hash_hi |= mask;
4822f7ca802SSteve Glendinning 			else
4833c0f3c60SMarc Zyngier 				pdata->hash_lo |= mask;
4842f7ca802SSteve Glendinning 		}
4852f7ca802SSteve Glendinning 
486a475f603SJoe Perches 		netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
4873c0f3c60SMarc Zyngier 				   pdata->hash_hi, pdata->hash_lo);
4882f7ca802SSteve Glendinning 	} else {
489a475f603SJoe Perches 		netif_dbg(dev, drv, dev->net, "receive own packets only\n");
4902f7ca802SSteve Glendinning 		pdata->mac_cr &=
4912f7ca802SSteve Glendinning 			~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
4922f7ca802SSteve Glendinning 	}
4932f7ca802SSteve Glendinning 
4942f7ca802SSteve Glendinning 	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
4952f7ca802SSteve Glendinning 
4962f7ca802SSteve Glendinning 	/* Initiate async writes, as we can't wait for completion here */
4977b9e7580SSteve Glendinning 	ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
498b052e073SSteve Glendinning 	if (ret < 0)
499b052e073SSteve Glendinning 		netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
500769ea6d8SSteve Glendinning 
5017b9e7580SSteve Glendinning 	ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
502b052e073SSteve Glendinning 	if (ret < 0)
503b052e073SSteve Glendinning 		netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
504769ea6d8SSteve Glendinning 
5057b9e7580SSteve Glendinning 	ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
506b052e073SSteve Glendinning 	if (ret < 0)
507b052e073SSteve Glendinning 		netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
5082f7ca802SSteve Glendinning }
5092f7ca802SSteve Glendinning 
510769ea6d8SSteve Glendinning static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
5112f7ca802SSteve Glendinning 					   u16 lcladv, u16 rmtadv)
5122f7ca802SSteve Glendinning {
5132f7ca802SSteve Glendinning 	u32 flow, afc_cfg = 0;
5142f7ca802SSteve Glendinning 
5152f7ca802SSteve Glendinning 	int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
516*e360a8b4SSteve Glendinning 	if (ret < 0)
517b052e073SSteve Glendinning 		return ret;
5182f7ca802SSteve Glendinning 
5192f7ca802SSteve Glendinning 	if (duplex == DUPLEX_FULL) {
520bc02ff95SSteve Glendinning 		u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
5212f7ca802SSteve Glendinning 
5222f7ca802SSteve Glendinning 		if (cap & FLOW_CTRL_RX)
5232f7ca802SSteve Glendinning 			flow = 0xFFFF0002;
5242f7ca802SSteve Glendinning 		else
5252f7ca802SSteve Glendinning 			flow = 0;
5262f7ca802SSteve Glendinning 
5272f7ca802SSteve Glendinning 		if (cap & FLOW_CTRL_TX)
5282f7ca802SSteve Glendinning 			afc_cfg |= 0xF;
5292f7ca802SSteve Glendinning 		else
5302f7ca802SSteve Glendinning 			afc_cfg &= ~0xF;
5312f7ca802SSteve Glendinning 
532a475f603SJoe Perches 		netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
53360b86755SJoe Perches 				   cap & FLOW_CTRL_RX ? "enabled" : "disabled",
53460b86755SJoe Perches 				   cap & FLOW_CTRL_TX ? "enabled" : "disabled");
5352f7ca802SSteve Glendinning 	} else {
536a475f603SJoe Perches 		netif_dbg(dev, link, dev->net, "half duplex\n");
5372f7ca802SSteve Glendinning 		flow = 0;
5382f7ca802SSteve Glendinning 		afc_cfg |= 0xF;
5392f7ca802SSteve Glendinning 	}
5402f7ca802SSteve Glendinning 
541769ea6d8SSteve Glendinning 	ret = smsc95xx_write_reg(dev, FLOW, flow);
542b052e073SSteve Glendinning 	if (ret < 0)
543b052e073SSteve Glendinning 		return ret;
544*e360a8b4SSteve Glendinning 
545*e360a8b4SSteve Glendinning 	return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
5462f7ca802SSteve Glendinning }
5472f7ca802SSteve Glendinning 
5482f7ca802SSteve Glendinning static int smsc95xx_link_reset(struct usbnet *dev)
5492f7ca802SSteve Glendinning {
5502f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
5512f7ca802SSteve Glendinning 	struct mii_if_info *mii = &dev->mii;
5528ae6dacaSDavid Decotigny 	struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
5532f7ca802SSteve Glendinning 	unsigned long flags;
5542f7ca802SSteve Glendinning 	u16 lcladv, rmtadv;
555769ea6d8SSteve Glendinning 	int ret;
5562f7ca802SSteve Glendinning 
5572f7ca802SSteve Glendinning 	/* clear interrupt status */
558769ea6d8SSteve Glendinning 	ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
559*e360a8b4SSteve Glendinning 	if (ret < 0)
560b052e073SSteve Glendinning 		return ret;
561769ea6d8SSteve Glendinning 
562769ea6d8SSteve Glendinning 	ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
563*e360a8b4SSteve Glendinning 	if (ret < 0)
564b052e073SSteve Glendinning 		return ret;
5652f7ca802SSteve Glendinning 
5662f7ca802SSteve Glendinning 	mii_check_media(mii, 1, 1);
5672f7ca802SSteve Glendinning 	mii_ethtool_gset(&dev->mii, &ecmd);
5682f7ca802SSteve Glendinning 	lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
5692f7ca802SSteve Glendinning 	rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
5702f7ca802SSteve Glendinning 
5718ae6dacaSDavid Decotigny 	netif_dbg(dev, link, dev->net,
5728ae6dacaSDavid Decotigny 		  "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
5738ae6dacaSDavid Decotigny 		  ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
5742f7ca802SSteve Glendinning 
5752f7ca802SSteve Glendinning 	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
5762f7ca802SSteve Glendinning 	if (ecmd.duplex != DUPLEX_FULL) {
5772f7ca802SSteve Glendinning 		pdata->mac_cr &= ~MAC_CR_FDPX_;
5782f7ca802SSteve Glendinning 		pdata->mac_cr |= MAC_CR_RCVOWN_;
5792f7ca802SSteve Glendinning 	} else {
5802f7ca802SSteve Glendinning 		pdata->mac_cr &= ~MAC_CR_RCVOWN_;
5812f7ca802SSteve Glendinning 		pdata->mac_cr |= MAC_CR_FDPX_;
5822f7ca802SSteve Glendinning 	}
5832f7ca802SSteve Glendinning 	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
5842f7ca802SSteve Glendinning 
585769ea6d8SSteve Glendinning 	ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
586*e360a8b4SSteve Glendinning 	if (ret < 0)
587b052e073SSteve Glendinning 		return ret;
5882f7ca802SSteve Glendinning 
589769ea6d8SSteve Glendinning 	ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
590b052e073SSteve Glendinning 	if (ret < 0)
591b052e073SSteve Glendinning 		netdev_warn(dev->net, "Error updating PHY flow control\n");
5922f7ca802SSteve Glendinning 
593b052e073SSteve Glendinning 	return ret;
5942f7ca802SSteve Glendinning }
5952f7ca802SSteve Glendinning 
5962f7ca802SSteve Glendinning static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
5972f7ca802SSteve Glendinning {
5982f7ca802SSteve Glendinning 	u32 intdata;
5992f7ca802SSteve Glendinning 
6002f7ca802SSteve Glendinning 	if (urb->actual_length != 4) {
60160b86755SJoe Perches 		netdev_warn(dev->net, "unexpected urb length %d\n",
60260b86755SJoe Perches 			    urb->actual_length);
6032f7ca802SSteve Glendinning 		return;
6042f7ca802SSteve Glendinning 	}
6052f7ca802SSteve Glendinning 
6062f7ca802SSteve Glendinning 	memcpy(&intdata, urb->transfer_buffer, 4);
6071d74a6bdSSteve Glendinning 	le32_to_cpus(&intdata);
6082f7ca802SSteve Glendinning 
609a475f603SJoe Perches 	netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
6102f7ca802SSteve Glendinning 
6112f7ca802SSteve Glendinning 	if (intdata & INT_ENP_PHY_INT_)
6122f7ca802SSteve Glendinning 		usbnet_defer_kevent(dev, EVENT_LINK_RESET);
6132f7ca802SSteve Glendinning 	else
61460b86755SJoe Perches 		netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
61560b86755SJoe Perches 			    intdata);
6162f7ca802SSteve Glendinning }
6172f7ca802SSteve Glendinning 
618f7b29271SSteve Glendinning /* Enable or disable Tx & Rx checksum offload engines */
619c8f44affSMichał Mirosław static int smsc95xx_set_features(struct net_device *netdev,
620c8f44affSMichał Mirosław 	netdev_features_t features)
6212f7ca802SSteve Glendinning {
62278e47fe4SMichał Mirosław 	struct usbnet *dev = netdev_priv(netdev);
6232f7ca802SSteve Glendinning 	u32 read_buf;
62478e47fe4SMichał Mirosław 	int ret;
62578e47fe4SMichał Mirosław 
62678e47fe4SMichał Mirosław 	ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
627*e360a8b4SSteve Glendinning 	if (ret < 0)
628b052e073SSteve Glendinning 		return ret;
6292f7ca802SSteve Glendinning 
63078e47fe4SMichał Mirosław 	if (features & NETIF_F_HW_CSUM)
631f7b29271SSteve Glendinning 		read_buf |= Tx_COE_EN_;
632f7b29271SSteve Glendinning 	else
633f7b29271SSteve Glendinning 		read_buf &= ~Tx_COE_EN_;
634f7b29271SSteve Glendinning 
63578e47fe4SMichał Mirosław 	if (features & NETIF_F_RXCSUM)
6362f7ca802SSteve Glendinning 		read_buf |= Rx_COE_EN_;
6372f7ca802SSteve Glendinning 	else
6382f7ca802SSteve Glendinning 		read_buf &= ~Rx_COE_EN_;
6392f7ca802SSteve Glendinning 
6402f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
641*e360a8b4SSteve Glendinning 	if (ret < 0)
642b052e073SSteve Glendinning 		return ret;
6432f7ca802SSteve Glendinning 
644a475f603SJoe Perches 	netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
6452f7ca802SSteve Glendinning 	return 0;
6462f7ca802SSteve Glendinning }
6472f7ca802SSteve Glendinning 
6482f7ca802SSteve Glendinning static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
6492f7ca802SSteve Glendinning {
6502f7ca802SSteve Glendinning 	return MAX_EEPROM_SIZE;
6512f7ca802SSteve Glendinning }
6522f7ca802SSteve Glendinning 
6532f7ca802SSteve Glendinning static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
6542f7ca802SSteve Glendinning 				       struct ethtool_eeprom *ee, u8 *data)
6552f7ca802SSteve Glendinning {
6562f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
6572f7ca802SSteve Glendinning 
6582f7ca802SSteve Glendinning 	ee->magic = LAN95XX_EEPROM_MAGIC;
6592f7ca802SSteve Glendinning 
6602f7ca802SSteve Glendinning 	return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
6612f7ca802SSteve Glendinning }
6622f7ca802SSteve Glendinning 
6632f7ca802SSteve Glendinning static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
6642f7ca802SSteve Glendinning 				       struct ethtool_eeprom *ee, u8 *data)
6652f7ca802SSteve Glendinning {
6662f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
6672f7ca802SSteve Glendinning 
6682f7ca802SSteve Glendinning 	if (ee->magic != LAN95XX_EEPROM_MAGIC) {
66960b86755SJoe Perches 		netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
6702f7ca802SSteve Glendinning 			    ee->magic);
6712f7ca802SSteve Glendinning 		return -EINVAL;
6722f7ca802SSteve Glendinning 	}
6732f7ca802SSteve Glendinning 
6742f7ca802SSteve Glendinning 	return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
6752f7ca802SSteve Glendinning }
6762f7ca802SSteve Glendinning 
6779fa32e94SEmeric Vigier static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
6789fa32e94SEmeric Vigier {
6799fa32e94SEmeric Vigier 	/* all smsc95xx registers */
68096245317SSteve Glendinning 	return COE_CR - ID_REV + sizeof(u32);
6819fa32e94SEmeric Vigier }
6829fa32e94SEmeric Vigier 
6839fa32e94SEmeric Vigier static void
6849fa32e94SEmeric Vigier smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
6859fa32e94SEmeric Vigier 			 void *buf)
6869fa32e94SEmeric Vigier {
6879fa32e94SEmeric Vigier 	struct usbnet *dev = netdev_priv(netdev);
688d348446bSDan Carpenter 	unsigned int i, j;
689d348446bSDan Carpenter 	int retval;
6909fa32e94SEmeric Vigier 	u32 *data = buf;
6919fa32e94SEmeric Vigier 
6929fa32e94SEmeric Vigier 	retval = smsc95xx_read_reg(dev, ID_REV, &regs->version);
6939fa32e94SEmeric Vigier 	if (retval < 0) {
6949fa32e94SEmeric Vigier 		netdev_warn(netdev, "REGS: cannot read ID_REV\n");
6959fa32e94SEmeric Vigier 		return;
6969fa32e94SEmeric Vigier 	}
6979fa32e94SEmeric Vigier 
6989fa32e94SEmeric Vigier 	for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
6999fa32e94SEmeric Vigier 		retval = smsc95xx_read_reg(dev, i, &data[j]);
7009fa32e94SEmeric Vigier 		if (retval < 0) {
7019fa32e94SEmeric Vigier 			netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
7029fa32e94SEmeric Vigier 			return;
7039fa32e94SEmeric Vigier 		}
7049fa32e94SEmeric Vigier 	}
7059fa32e94SEmeric Vigier }
7069fa32e94SEmeric Vigier 
707e0e474a8SSteve Glendinning static void smsc95xx_ethtool_get_wol(struct net_device *net,
708e0e474a8SSteve Glendinning 				     struct ethtool_wolinfo *wolinfo)
709e0e474a8SSteve Glendinning {
710e0e474a8SSteve Glendinning 	struct usbnet *dev = netdev_priv(net);
711e0e474a8SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
712e0e474a8SSteve Glendinning 
713e0e474a8SSteve Glendinning 	wolinfo->supported = SUPPORTED_WAKE;
714e0e474a8SSteve Glendinning 	wolinfo->wolopts = pdata->wolopts;
715e0e474a8SSteve Glendinning }
716e0e474a8SSteve Glendinning 
717e0e474a8SSteve Glendinning static int smsc95xx_ethtool_set_wol(struct net_device *net,
718e0e474a8SSteve Glendinning 				    struct ethtool_wolinfo *wolinfo)
719e0e474a8SSteve Glendinning {
720e0e474a8SSteve Glendinning 	struct usbnet *dev = netdev_priv(net);
721e0e474a8SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
7223b14692cSSteve Glendinning 	int ret;
723e0e474a8SSteve Glendinning 
724e0e474a8SSteve Glendinning 	pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
7253b14692cSSteve Glendinning 
7263b14692cSSteve Glendinning 	ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
727b052e073SSteve Glendinning 	if (ret < 0)
728b052e073SSteve Glendinning 		netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
7293b14692cSSteve Glendinning 
730b052e073SSteve Glendinning 	return ret;
731e0e474a8SSteve Glendinning }
732e0e474a8SSteve Glendinning 
7330fc0b732SStephen Hemminger static const struct ethtool_ops smsc95xx_ethtool_ops = {
7342f7ca802SSteve Glendinning 	.get_link	= usbnet_get_link,
7352f7ca802SSteve Glendinning 	.nway_reset	= usbnet_nway_reset,
7362f7ca802SSteve Glendinning 	.get_drvinfo	= usbnet_get_drvinfo,
7372f7ca802SSteve Glendinning 	.get_msglevel	= usbnet_get_msglevel,
7382f7ca802SSteve Glendinning 	.set_msglevel	= usbnet_set_msglevel,
7392f7ca802SSteve Glendinning 	.get_settings	= usbnet_get_settings,
7402f7ca802SSteve Glendinning 	.set_settings	= usbnet_set_settings,
7412f7ca802SSteve Glendinning 	.get_eeprom_len	= smsc95xx_ethtool_get_eeprom_len,
7422f7ca802SSteve Glendinning 	.get_eeprom	= smsc95xx_ethtool_get_eeprom,
7432f7ca802SSteve Glendinning 	.set_eeprom	= smsc95xx_ethtool_set_eeprom,
7449fa32e94SEmeric Vigier 	.get_regs_len	= smsc95xx_ethtool_getregslen,
7459fa32e94SEmeric Vigier 	.get_regs	= smsc95xx_ethtool_getregs,
746e0e474a8SSteve Glendinning 	.get_wol	= smsc95xx_ethtool_get_wol,
747e0e474a8SSteve Glendinning 	.set_wol	= smsc95xx_ethtool_set_wol,
7482f7ca802SSteve Glendinning };
7492f7ca802SSteve Glendinning 
7502f7ca802SSteve Glendinning static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
7512f7ca802SSteve Glendinning {
7522f7ca802SSteve Glendinning 	struct usbnet *dev = netdev_priv(netdev);
7532f7ca802SSteve Glendinning 
7542f7ca802SSteve Glendinning 	if (!netif_running(netdev))
7552f7ca802SSteve Glendinning 		return -EINVAL;
7562f7ca802SSteve Glendinning 
7572f7ca802SSteve Glendinning 	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
7582f7ca802SSteve Glendinning }
7592f7ca802SSteve Glendinning 
7602f7ca802SSteve Glendinning static void smsc95xx_init_mac_address(struct usbnet *dev)
7612f7ca802SSteve Glendinning {
7622f7ca802SSteve Glendinning 	/* try reading mac address from EEPROM */
7632f7ca802SSteve Glendinning 	if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
7642f7ca802SSteve Glendinning 			dev->net->dev_addr) == 0) {
7652f7ca802SSteve Glendinning 		if (is_valid_ether_addr(dev->net->dev_addr)) {
7662f7ca802SSteve Glendinning 			/* eeprom values are valid so use them */
767a475f603SJoe Perches 			netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
7682f7ca802SSteve Glendinning 			return;
7692f7ca802SSteve Glendinning 		}
7702f7ca802SSteve Glendinning 	}
7712f7ca802SSteve Glendinning 
7722f7ca802SSteve Glendinning 	/* no eeprom, or eeprom values are invalid. generate random MAC */
773f2cedb63SDanny Kukawka 	eth_hw_addr_random(dev->net);
774c7e12eadSJoe Perches 	netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
7752f7ca802SSteve Glendinning }
7762f7ca802SSteve Glendinning 
7772f7ca802SSteve Glendinning static int smsc95xx_set_mac_address(struct usbnet *dev)
7782f7ca802SSteve Glendinning {
7792f7ca802SSteve Glendinning 	u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
7802f7ca802SSteve Glendinning 		dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
7812f7ca802SSteve Glendinning 	u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
7822f7ca802SSteve Glendinning 	int ret;
7832f7ca802SSteve Glendinning 
7842f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
785b052e073SSteve Glendinning 	if (ret < 0)
786b052e073SSteve Glendinning 		return ret;
787*e360a8b4SSteve Glendinning 
788*e360a8b4SSteve Glendinning 	return smsc95xx_write_reg(dev, ADDRH, addr_hi);
7892f7ca802SSteve Glendinning }
7902f7ca802SSteve Glendinning 
7912f7ca802SSteve Glendinning /* starts the TX path */
792769ea6d8SSteve Glendinning static int smsc95xx_start_tx_path(struct usbnet *dev)
7932f7ca802SSteve Glendinning {
7942f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
7952f7ca802SSteve Glendinning 	unsigned long flags;
796769ea6d8SSteve Glendinning 	int ret;
7972f7ca802SSteve Glendinning 
7982f7ca802SSteve Glendinning 	/* Enable Tx at MAC */
7992f7ca802SSteve Glendinning 	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
8002f7ca802SSteve Glendinning 	pdata->mac_cr |= MAC_CR_TXEN_;
8012f7ca802SSteve Glendinning 	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
8022f7ca802SSteve Glendinning 
803769ea6d8SSteve Glendinning 	ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
804*e360a8b4SSteve Glendinning 	if (ret < 0)
805b052e073SSteve Glendinning 		return ret;
8062f7ca802SSteve Glendinning 
8072f7ca802SSteve Glendinning 	/* Enable Tx at SCSRs */
808*e360a8b4SSteve Glendinning 	return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
8092f7ca802SSteve Glendinning }
8102f7ca802SSteve Glendinning 
8112f7ca802SSteve Glendinning /* Starts the Receive path */
812ec32115dSMing Lei static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
8132f7ca802SSteve Glendinning {
8142f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
8152f7ca802SSteve Glendinning 	unsigned long flags;
8162f7ca802SSteve Glendinning 
8172f7ca802SSteve Glendinning 	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
8182f7ca802SSteve Glendinning 	pdata->mac_cr |= MAC_CR_RXEN_;
8192f7ca802SSteve Glendinning 	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
8202f7ca802SSteve Glendinning 
821*e360a8b4SSteve Glendinning 	return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
8222f7ca802SSteve Glendinning }
8232f7ca802SSteve Glendinning 
8242f7ca802SSteve Glendinning static int smsc95xx_phy_initialize(struct usbnet *dev)
8252f7ca802SSteve Glendinning {
826769ea6d8SSteve Glendinning 	int bmcr, ret, timeout = 0;
827db443c44SSteve Glendinning 
8282f7ca802SSteve Glendinning 	/* Initialize MII structure */
8292f7ca802SSteve Glendinning 	dev->mii.dev = dev->net;
8302f7ca802SSteve Glendinning 	dev->mii.mdio_read = smsc95xx_mdio_read;
8312f7ca802SSteve Glendinning 	dev->mii.mdio_write = smsc95xx_mdio_write;
8322f7ca802SSteve Glendinning 	dev->mii.phy_id_mask = 0x1f;
8332f7ca802SSteve Glendinning 	dev->mii.reg_num_mask = 0x1f;
8342f7ca802SSteve Glendinning 	dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
8352f7ca802SSteve Glendinning 
836db443c44SSteve Glendinning 	/* reset phy and wait for reset to complete */
8372f7ca802SSteve Glendinning 	smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
838db443c44SSteve Glendinning 
839db443c44SSteve Glendinning 	do {
840db443c44SSteve Glendinning 		msleep(10);
841db443c44SSteve Glendinning 		bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
842db443c44SSteve Glendinning 		timeout++;
843d9460920SRabin Vincent 	} while ((bmcr & BMCR_RESET) && (timeout < 100));
844db443c44SSteve Glendinning 
845db443c44SSteve Glendinning 	if (timeout >= 100) {
846db443c44SSteve Glendinning 		netdev_warn(dev->net, "timeout on PHY Reset");
847db443c44SSteve Glendinning 		return -EIO;
848db443c44SSteve Glendinning 	}
849db443c44SSteve Glendinning 
8502f7ca802SSteve Glendinning 	smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
8512f7ca802SSteve Glendinning 		ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
8522f7ca802SSteve Glendinning 		ADVERTISE_PAUSE_ASYM);
8532f7ca802SSteve Glendinning 
8542f7ca802SSteve Glendinning 	/* read to clear */
855769ea6d8SSteve Glendinning 	ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
856b052e073SSteve Glendinning 	if (ret < 0) {
857b052e073SSteve Glendinning 		netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
858b052e073SSteve Glendinning 		return ret;
859b052e073SSteve Glendinning 	}
8602f7ca802SSteve Glendinning 
8612f7ca802SSteve Glendinning 	smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
8622f7ca802SSteve Glendinning 		PHY_INT_MASK_DEFAULT_);
8632f7ca802SSteve Glendinning 	mii_nway_restart(&dev->mii);
8642f7ca802SSteve Glendinning 
865a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
8662f7ca802SSteve Glendinning 	return 0;
8672f7ca802SSteve Glendinning }
8682f7ca802SSteve Glendinning 
8692f7ca802SSteve Glendinning static int smsc95xx_reset(struct usbnet *dev)
8702f7ca802SSteve Glendinning {
8712f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
8722f7ca802SSteve Glendinning 	u32 read_buf, write_buf, burst_cap;
8732f7ca802SSteve Glendinning 	int ret = 0, timeout;
8742f7ca802SSteve Glendinning 
875a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
8762f7ca802SSteve Glendinning 
8774436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
878*e360a8b4SSteve Glendinning 	if (ret < 0)
879b052e073SSteve Glendinning 		return ret;
8802f7ca802SSteve Glendinning 
8812f7ca802SSteve Glendinning 	timeout = 0;
8822f7ca802SSteve Glendinning 	do {
883cf2acec2SSteve Glendinning 		msleep(10);
8842f7ca802SSteve Glendinning 		ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
885*e360a8b4SSteve Glendinning 		if (ret < 0)
886b052e073SSteve Glendinning 			return ret;
8872f7ca802SSteve Glendinning 		timeout++;
8882f7ca802SSteve Glendinning 	} while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
8892f7ca802SSteve Glendinning 
8902f7ca802SSteve Glendinning 	if (timeout >= 100) {
89160b86755SJoe Perches 		netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
8922f7ca802SSteve Glendinning 		return ret;
8932f7ca802SSteve Glendinning 	}
8942f7ca802SSteve Glendinning 
8954436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
896*e360a8b4SSteve Glendinning 	if (ret < 0)
897b052e073SSteve Glendinning 		return ret;
8982f7ca802SSteve Glendinning 
8992f7ca802SSteve Glendinning 	timeout = 0;
9002f7ca802SSteve Glendinning 	do {
901cf2acec2SSteve Glendinning 		msleep(10);
9022f7ca802SSteve Glendinning 		ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
903*e360a8b4SSteve Glendinning 		if (ret < 0)
904b052e073SSteve Glendinning 			return ret;
9052f7ca802SSteve Glendinning 		timeout++;
9062f7ca802SSteve Glendinning 	} while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
9072f7ca802SSteve Glendinning 
9082f7ca802SSteve Glendinning 	if (timeout >= 100) {
90960b86755SJoe Perches 		netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
9102f7ca802SSteve Glendinning 		return ret;
9112f7ca802SSteve Glendinning 	}
9122f7ca802SSteve Glendinning 
9132f7ca802SSteve Glendinning 	ret = smsc95xx_set_mac_address(dev);
9142f7ca802SSteve Glendinning 	if (ret < 0)
9152f7ca802SSteve Glendinning 		return ret;
9162f7ca802SSteve Glendinning 
9171e1d7412SJoe Perches 	netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
9181e1d7412SJoe Perches 		  dev->net->dev_addr);
9192f7ca802SSteve Glendinning 
9202f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
921*e360a8b4SSteve Glendinning 	if (ret < 0)
922b052e073SSteve Glendinning 		return ret;
9232f7ca802SSteve Glendinning 
9241e1d7412SJoe Perches 	netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
9251e1d7412SJoe Perches 		  read_buf);
9262f7ca802SSteve Glendinning 
9272f7ca802SSteve Glendinning 	read_buf |= HW_CFG_BIR_;
9282f7ca802SSteve Glendinning 
9292f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
930*e360a8b4SSteve Glendinning 	if (ret < 0)
931b052e073SSteve Glendinning 		return ret;
9322f7ca802SSteve Glendinning 
9332f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
934*e360a8b4SSteve Glendinning 	if (ret < 0)
935b052e073SSteve Glendinning 		return ret;
936b052e073SSteve Glendinning 
937a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net,
938a475f603SJoe Perches 		  "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
93960b86755SJoe Perches 		  read_buf);
9402f7ca802SSteve Glendinning 
9412f7ca802SSteve Glendinning 	if (!turbo_mode) {
9422f7ca802SSteve Glendinning 		burst_cap = 0;
9432f7ca802SSteve Glendinning 		dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
9442f7ca802SSteve Glendinning 	} else if (dev->udev->speed == USB_SPEED_HIGH) {
9452f7ca802SSteve Glendinning 		burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
9462f7ca802SSteve Glendinning 		dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
9472f7ca802SSteve Glendinning 	} else {
9482f7ca802SSteve Glendinning 		burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
9492f7ca802SSteve Glendinning 		dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
9502f7ca802SSteve Glendinning 	}
9512f7ca802SSteve Glendinning 
9521e1d7412SJoe Perches 	netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
9531e1d7412SJoe Perches 		  (ulong)dev->rx_urb_size);
9542f7ca802SSteve Glendinning 
9552f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
956*e360a8b4SSteve Glendinning 	if (ret < 0)
957b052e073SSteve Glendinning 		return ret;
9582f7ca802SSteve Glendinning 
9592f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
960*e360a8b4SSteve Glendinning 	if (ret < 0)
961b052e073SSteve Glendinning 		return ret;
962769ea6d8SSteve Glendinning 
963a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net,
964a475f603SJoe Perches 		  "Read Value from BURST_CAP after writing: 0x%08x\n",
9652f7ca802SSteve Glendinning 		  read_buf);
9662f7ca802SSteve Glendinning 
9674436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
968*e360a8b4SSteve Glendinning 	if (ret < 0)
969b052e073SSteve Glendinning 		return ret;
9702f7ca802SSteve Glendinning 
9712f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
972*e360a8b4SSteve Glendinning 	if (ret < 0)
973b052e073SSteve Glendinning 		return ret;
974769ea6d8SSteve Glendinning 
975a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net,
976a475f603SJoe Perches 		  "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
97760b86755SJoe Perches 		  read_buf);
9782f7ca802SSteve Glendinning 
9792f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
980*e360a8b4SSteve Glendinning 	if (ret < 0)
981b052e073SSteve Glendinning 		return ret;
982769ea6d8SSteve Glendinning 
9831e1d7412SJoe Perches 	netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
9841e1d7412SJoe Perches 		  read_buf);
9852f7ca802SSteve Glendinning 
9862f7ca802SSteve Glendinning 	if (turbo_mode)
9872f7ca802SSteve Glendinning 		read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
9882f7ca802SSteve Glendinning 
9892f7ca802SSteve Glendinning 	read_buf &= ~HW_CFG_RXDOFF_;
9902f7ca802SSteve Glendinning 
9912f7ca802SSteve Glendinning 	/* set Rx data offset=2, Make IP header aligns on word boundary. */
9922f7ca802SSteve Glendinning 	read_buf |= NET_IP_ALIGN << 9;
9932f7ca802SSteve Glendinning 
9942f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
995*e360a8b4SSteve Glendinning 	if (ret < 0)
996b052e073SSteve Glendinning 		return ret;
9972f7ca802SSteve Glendinning 
9982f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
999*e360a8b4SSteve Glendinning 	if (ret < 0)
1000b052e073SSteve Glendinning 		return ret;
1001769ea6d8SSteve Glendinning 
1002a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net,
1003a475f603SJoe Perches 		  "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
10042f7ca802SSteve Glendinning 
10054436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1006*e360a8b4SSteve Glendinning 	if (ret < 0)
1007b052e073SSteve Glendinning 		return ret;
10082f7ca802SSteve Glendinning 
10092f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
1010*e360a8b4SSteve Glendinning 	if (ret < 0)
1011b052e073SSteve Glendinning 		return ret;
1012a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
10132f7ca802SSteve Glendinning 
1014f293501cSSteve Glendinning 	/* Configure GPIO pins as LED outputs */
1015f293501cSSteve Glendinning 	write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
1016f293501cSSteve Glendinning 		LED_GPIO_CFG_FDX_LED;
1017f293501cSSteve Glendinning 	ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
1018*e360a8b4SSteve Glendinning 	if (ret < 0)
1019b052e073SSteve Glendinning 		return ret;
1020f293501cSSteve Glendinning 
10212f7ca802SSteve Glendinning 	/* Init Tx */
10224436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, FLOW, 0);
1023*e360a8b4SSteve Glendinning 	if (ret < 0)
1024b052e073SSteve Glendinning 		return ret;
10252f7ca802SSteve Glendinning 
10264436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
1027*e360a8b4SSteve Glendinning 	if (ret < 0)
1028b052e073SSteve Glendinning 		return ret;
10292f7ca802SSteve Glendinning 
10302f7ca802SSteve Glendinning 	/* Don't need mac_cr_lock during initialisation */
10312f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
1032*e360a8b4SSteve Glendinning 	if (ret < 0)
1033b052e073SSteve Glendinning 		return ret;
10342f7ca802SSteve Glendinning 
10352f7ca802SSteve Glendinning 	/* Init Rx */
10362f7ca802SSteve Glendinning 	/* Set Vlan */
10374436761bSSteve Glendinning 	ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
1038*e360a8b4SSteve Glendinning 	if (ret < 0)
1039b052e073SSteve Glendinning 		return ret;
10402f7ca802SSteve Glendinning 
1041f7b29271SSteve Glendinning 	/* Enable or disable checksum offload engines */
1042769ea6d8SSteve Glendinning 	ret = smsc95xx_set_features(dev->net, dev->net->features);
1043b052e073SSteve Glendinning 	if (ret < 0) {
1044b052e073SSteve Glendinning 		netdev_warn(dev->net, "Failed to set checksum offload features\n");
1045b052e073SSteve Glendinning 		return ret;
1046b052e073SSteve Glendinning 	}
10472f7ca802SSteve Glendinning 
10482f7ca802SSteve Glendinning 	smsc95xx_set_multicast(dev->net);
10492f7ca802SSteve Glendinning 
1050769ea6d8SSteve Glendinning 	ret = smsc95xx_phy_initialize(dev);
1051b052e073SSteve Glendinning 	if (ret < 0) {
1052b052e073SSteve Glendinning 		netdev_warn(dev->net, "Failed to init PHY\n");
1053b052e073SSteve Glendinning 		return ret;
1054b052e073SSteve Glendinning 	}
10552f7ca802SSteve Glendinning 
10562f7ca802SSteve Glendinning 	ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
1057*e360a8b4SSteve Glendinning 	if (ret < 0)
1058b052e073SSteve Glendinning 		return ret;
10592f7ca802SSteve Glendinning 
10602f7ca802SSteve Glendinning 	/* enable PHY interrupts */
10612f7ca802SSteve Glendinning 	read_buf |= INT_EP_CTL_PHY_INT_;
10622f7ca802SSteve Glendinning 
10632f7ca802SSteve Glendinning 	ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1064*e360a8b4SSteve Glendinning 	if (ret < 0)
1065b052e073SSteve Glendinning 		return ret;
10662f7ca802SSteve Glendinning 
1067769ea6d8SSteve Glendinning 	ret = smsc95xx_start_tx_path(dev);
1068b052e073SSteve Glendinning 	if (ret < 0) {
1069b052e073SSteve Glendinning 		netdev_warn(dev->net, "Failed to start TX path\n");
1070b052e073SSteve Glendinning 		return ret;
1071b052e073SSteve Glendinning 	}
1072769ea6d8SSteve Glendinning 
1073ec32115dSMing Lei 	ret = smsc95xx_start_rx_path(dev, 0);
1074b052e073SSteve Glendinning 	if (ret < 0) {
1075b052e073SSteve Glendinning 		netdev_warn(dev->net, "Failed to start RX path\n");
1076b052e073SSteve Glendinning 		return ret;
1077b052e073SSteve Glendinning 	}
10782f7ca802SSteve Glendinning 
1079a475f603SJoe Perches 	netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
10802f7ca802SSteve Glendinning 	return 0;
10812f7ca802SSteve Glendinning }
10822f7ca802SSteve Glendinning 
108363e77b39SStephen Hemminger static const struct net_device_ops smsc95xx_netdev_ops = {
108463e77b39SStephen Hemminger 	.ndo_open		= usbnet_open,
108563e77b39SStephen Hemminger 	.ndo_stop		= usbnet_stop,
108663e77b39SStephen Hemminger 	.ndo_start_xmit		= usbnet_start_xmit,
108763e77b39SStephen Hemminger 	.ndo_tx_timeout		= usbnet_tx_timeout,
108863e77b39SStephen Hemminger 	.ndo_change_mtu		= usbnet_change_mtu,
108963e77b39SStephen Hemminger 	.ndo_set_mac_address 	= eth_mac_addr,
109063e77b39SStephen Hemminger 	.ndo_validate_addr	= eth_validate_addr,
109163e77b39SStephen Hemminger 	.ndo_do_ioctl 		= smsc95xx_ioctl,
1092afc4b13dSJiri Pirko 	.ndo_set_rx_mode	= smsc95xx_set_multicast,
109378e47fe4SMichał Mirosław 	.ndo_set_features	= smsc95xx_set_features,
109463e77b39SStephen Hemminger };
109563e77b39SStephen Hemminger 
10962f7ca802SSteve Glendinning static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
10972f7ca802SSteve Glendinning {
10982f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = NULL;
1099bbd9f9eeSSteve Glendinning 	u32 val;
11002f7ca802SSteve Glendinning 	int ret;
11012f7ca802SSteve Glendinning 
11022f7ca802SSteve Glendinning 	printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
11032f7ca802SSteve Glendinning 
11042f7ca802SSteve Glendinning 	ret = usbnet_get_endpoints(dev, intf);
1105b052e073SSteve Glendinning 	if (ret < 0) {
1106b052e073SSteve Glendinning 		netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1107b052e073SSteve Glendinning 		return ret;
1108b052e073SSteve Glendinning 	}
11092f7ca802SSteve Glendinning 
11102f7ca802SSteve Glendinning 	dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
11112f7ca802SSteve Glendinning 		GFP_KERNEL);
11122f7ca802SSteve Glendinning 
11132f7ca802SSteve Glendinning 	pdata = (struct smsc95xx_priv *)(dev->data[0]);
11142f7ca802SSteve Glendinning 	if (!pdata) {
111560b86755SJoe Perches 		netdev_warn(dev->net, "Unable to allocate struct smsc95xx_priv\n");
11162f7ca802SSteve Glendinning 		return -ENOMEM;
11172f7ca802SSteve Glendinning 	}
11182f7ca802SSteve Glendinning 
11192f7ca802SSteve Glendinning 	spin_lock_init(&pdata->mac_cr_lock);
11202f7ca802SSteve Glendinning 
112178e47fe4SMichał Mirosław 	if (DEFAULT_TX_CSUM_ENABLE)
112278e47fe4SMichał Mirosław 		dev->net->features |= NETIF_F_HW_CSUM;
112378e47fe4SMichał Mirosław 	if (DEFAULT_RX_CSUM_ENABLE)
112478e47fe4SMichał Mirosław 		dev->net->features |= NETIF_F_RXCSUM;
112578e47fe4SMichał Mirosław 
112678e47fe4SMichał Mirosław 	dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
11272f7ca802SSteve Glendinning 
1128f4e8ab7cSBernard Blackham 	smsc95xx_init_mac_address(dev);
1129f4e8ab7cSBernard Blackham 
11302f7ca802SSteve Glendinning 	/* Init all registers */
11312f7ca802SSteve Glendinning 	ret = smsc95xx_reset(dev);
11322f7ca802SSteve Glendinning 
1133bbd9f9eeSSteve Glendinning 	/* detect device revision as different features may be available */
1134bbd9f9eeSSteve Glendinning 	ret = smsc95xx_read_reg(dev, ID_REV, &val);
1135*e360a8b4SSteve Glendinning 	if (ret < 0)
1136b052e073SSteve Glendinning 		return ret;
1137bbd9f9eeSSteve Glendinning 	val >>= 16;
11389ebca507SSteve Glendinning 
11399ebca507SSteve Glendinning 	if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
11409ebca507SSteve Glendinning 	    (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
11419ebca507SSteve Glendinning 		pdata->features = (FEATURE_8_WAKEUP_FILTERS |
11429ebca507SSteve Glendinning 			FEATURE_PHY_NLP_CROSSOVER |
11439ebca507SSteve Glendinning 			FEATURE_AUTOSUSPEND);
11449ebca507SSteve Glendinning 	else if (val == ID_REV_CHIP_ID_9512_)
11459ebca507SSteve Glendinning 		pdata->features = FEATURE_8_WAKEUP_FILTERS;
1146bbd9f9eeSSteve Glendinning 
114763e77b39SStephen Hemminger 	dev->net->netdev_ops = &smsc95xx_netdev_ops;
11482f7ca802SSteve Glendinning 	dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
11492f7ca802SSteve Glendinning 	dev->net->flags |= IFF_MULTICAST;
115078e47fe4SMichał Mirosław 	dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
11519bbf5660SStephane Fillod 	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
11522f7ca802SSteve Glendinning 	return 0;
11532f7ca802SSteve Glendinning }
11542f7ca802SSteve Glendinning 
11552f7ca802SSteve Glendinning static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
11562f7ca802SSteve Glendinning {
11572f7ca802SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
11582f7ca802SSteve Glendinning 	if (pdata) {
1159a475f603SJoe Perches 		netif_dbg(dev, ifdown, dev->net, "free pdata\n");
11602f7ca802SSteve Glendinning 		kfree(pdata);
11612f7ca802SSteve Glendinning 		pdata = NULL;
11622f7ca802SSteve Glendinning 		dev->data[0] = 0;
11632f7ca802SSteve Glendinning 	}
11642f7ca802SSteve Glendinning }
11652f7ca802SSteve Glendinning 
1166068bb1a7SSteve Glendinning static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
1167bbd9f9eeSSteve Glendinning {
1168068bb1a7SSteve Glendinning 	u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
1169068bb1a7SSteve Glendinning 	return crc << ((filter % 2) * 16);
1170bbd9f9eeSSteve Glendinning }
1171bbd9f9eeSSteve Glendinning 
1172e5e3af83SSteve Glendinning static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1173e5e3af83SSteve Glendinning {
1174e5e3af83SSteve Glendinning 	struct mii_if_info *mii = &dev->mii;
1175e5e3af83SSteve Glendinning 	int ret;
1176e5e3af83SSteve Glendinning 
11771e1d7412SJoe Perches 	netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1178e5e3af83SSteve Glendinning 
1179e5e3af83SSteve Glendinning 	/* read to clear */
1180e5e3af83SSteve Glendinning 	ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1181*e360a8b4SSteve Glendinning 	if (ret < 0)
1182b052e073SSteve Glendinning 		return ret;
1183e5e3af83SSteve Glendinning 
1184e5e3af83SSteve Glendinning 	/* enable interrupt source */
1185e5e3af83SSteve Glendinning 	ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1186*e360a8b4SSteve Glendinning 	if (ret < 0)
1187b052e073SSteve Glendinning 		return ret;
1188e5e3af83SSteve Glendinning 
1189e5e3af83SSteve Glendinning 	ret |= mask;
1190e5e3af83SSteve Glendinning 
1191e5e3af83SSteve Glendinning 	smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1192e5e3af83SSteve Glendinning 
1193e5e3af83SSteve Glendinning 	return 0;
1194e5e3af83SSteve Glendinning }
1195e5e3af83SSteve Glendinning 
1196e5e3af83SSteve Glendinning static int smsc95xx_link_ok_nopm(struct usbnet *dev)
1197e5e3af83SSteve Glendinning {
1198e5e3af83SSteve Glendinning 	struct mii_if_info *mii = &dev->mii;
1199e5e3af83SSteve Glendinning 	int ret;
1200e5e3af83SSteve Glendinning 
1201e5e3af83SSteve Glendinning 	/* first, a dummy read, needed to latch some MII phys */
1202e5e3af83SSteve Glendinning 	ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1203*e360a8b4SSteve Glendinning 	if (ret < 0)
1204b052e073SSteve Glendinning 		return ret;
1205e5e3af83SSteve Glendinning 
1206e5e3af83SSteve Glendinning 	ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1207*e360a8b4SSteve Glendinning 	if (ret < 0)
1208b052e073SSteve Glendinning 		return ret;
1209e5e3af83SSteve Glendinning 
1210e5e3af83SSteve Glendinning 	return !!(ret & BMSR_LSTATUS);
1211e5e3af83SSteve Glendinning }
1212e5e3af83SSteve Glendinning 
1213319b95b5SSteve Glendinning static int smsc95xx_enter_suspend0(struct usbnet *dev)
1214319b95b5SSteve Glendinning {
1215319b95b5SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1216319b95b5SSteve Glendinning 	u32 val;
1217319b95b5SSteve Glendinning 	int ret;
1218319b95b5SSteve Glendinning 
1219319b95b5SSteve Glendinning 	ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1220*e360a8b4SSteve Glendinning 	if (ret < 0)
1221b052e073SSteve Glendinning 		return ret;
1222319b95b5SSteve Glendinning 
1223319b95b5SSteve Glendinning 	val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
1224319b95b5SSteve Glendinning 	val |= PM_CTL_SUS_MODE_0;
1225319b95b5SSteve Glendinning 
1226319b95b5SSteve Glendinning 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1227*e360a8b4SSteve Glendinning 	if (ret < 0)
1228b052e073SSteve Glendinning 		return ret;
1229319b95b5SSteve Glendinning 
1230319b95b5SSteve Glendinning 	/* clear wol status */
1231319b95b5SSteve Glendinning 	val &= ~PM_CTL_WUPS_;
1232319b95b5SSteve Glendinning 	val |= PM_CTL_WUPS_WOL_;
1233319b95b5SSteve Glendinning 
1234319b95b5SSteve Glendinning 	/* enable energy detection */
1235319b95b5SSteve Glendinning 	if (pdata->wolopts & WAKE_PHY)
1236319b95b5SSteve Glendinning 		val |= PM_CTL_WUPS_ED_;
1237319b95b5SSteve Glendinning 
1238319b95b5SSteve Glendinning 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1239*e360a8b4SSteve Glendinning 	if (ret < 0)
1240b052e073SSteve Glendinning 		return ret;
1241319b95b5SSteve Glendinning 
1242319b95b5SSteve Glendinning 	/* read back PM_CTRL */
1243319b95b5SSteve Glendinning 	ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1244319b95b5SSteve Glendinning 
1245b052e073SSteve Glendinning 	return ret;
1246319b95b5SSteve Glendinning }
1247319b95b5SSteve Glendinning 
1248319b95b5SSteve Glendinning static int smsc95xx_enter_suspend1(struct usbnet *dev)
1249319b95b5SSteve Glendinning {
1250319b95b5SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1251319b95b5SSteve Glendinning 	struct mii_if_info *mii = &dev->mii;
1252319b95b5SSteve Glendinning 	u32 val;
1253319b95b5SSteve Glendinning 	int ret;
1254319b95b5SSteve Glendinning 
1255319b95b5SSteve Glendinning 	/* reconfigure link pulse detection timing for
1256319b95b5SSteve Glendinning 	 * compatibility with non-standard link partners
1257319b95b5SSteve Glendinning 	 */
1258319b95b5SSteve Glendinning 	if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
1259319b95b5SSteve Glendinning 		smsc95xx_mdio_write_nopm(dev->net, mii->phy_id,	PHY_EDPD_CONFIG,
1260319b95b5SSteve Glendinning 			PHY_EDPD_CONFIG_DEFAULT);
1261319b95b5SSteve Glendinning 
1262319b95b5SSteve Glendinning 	/* enable energy detect power-down mode */
1263319b95b5SSteve Glendinning 	ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS);
1264*e360a8b4SSteve Glendinning 	if (ret < 0)
1265b052e073SSteve Glendinning 		return ret;
1266319b95b5SSteve Glendinning 
1267319b95b5SSteve Glendinning 	ret |= MODE_CTRL_STS_EDPWRDOWN_;
1268319b95b5SSteve Glendinning 
1269319b95b5SSteve Glendinning 	smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret);
1270319b95b5SSteve Glendinning 
1271319b95b5SSteve Glendinning 	/* enter SUSPEND1 mode */
1272319b95b5SSteve Glendinning 	ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1273*e360a8b4SSteve Glendinning 	if (ret < 0)
1274b052e073SSteve Glendinning 		return ret;
1275319b95b5SSteve Glendinning 
1276319b95b5SSteve Glendinning 	val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1277319b95b5SSteve Glendinning 	val |= PM_CTL_SUS_MODE_1;
1278319b95b5SSteve Glendinning 
1279319b95b5SSteve Glendinning 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1280*e360a8b4SSteve Glendinning 	if (ret < 0)
1281b052e073SSteve Glendinning 		return ret;
1282319b95b5SSteve Glendinning 
1283319b95b5SSteve Glendinning 	/* clear wol status, enable energy detection */
1284319b95b5SSteve Glendinning 	val &= ~PM_CTL_WUPS_;
1285319b95b5SSteve Glendinning 	val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
1286319b95b5SSteve Glendinning 
1287319b95b5SSteve Glendinning 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1288319b95b5SSteve Glendinning 
1289b052e073SSteve Glendinning 	return ret;
1290319b95b5SSteve Glendinning }
1291319b95b5SSteve Glendinning 
1292319b95b5SSteve Glendinning static int smsc95xx_enter_suspend2(struct usbnet *dev)
1293319b95b5SSteve Glendinning {
1294319b95b5SSteve Glendinning 	u32 val;
1295319b95b5SSteve Glendinning 	int ret;
1296319b95b5SSteve Glendinning 
1297319b95b5SSteve Glendinning 	ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1298*e360a8b4SSteve Glendinning 	if (ret < 0)
1299b052e073SSteve Glendinning 		return ret;
1300319b95b5SSteve Glendinning 
1301319b95b5SSteve Glendinning 	val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1302319b95b5SSteve Glendinning 	val |= PM_CTL_SUS_MODE_2;
1303319b95b5SSteve Glendinning 
1304319b95b5SSteve Glendinning 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1305319b95b5SSteve Glendinning 
1306b052e073SSteve Glendinning 	return ret;
1307319b95b5SSteve Glendinning }
1308319b95b5SSteve Glendinning 
1309b5a04475SSteve Glendinning static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
1310b5a04475SSteve Glendinning {
1311b5a04475SSteve Glendinning 	struct usbnet *dev = usb_get_intfdata(intf);
1312e0e474a8SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1313e5e3af83SSteve Glendinning 	u32 val, link_up;
1314b5a04475SSteve Glendinning 	int ret;
1315b5a04475SSteve Glendinning 
1316b5a04475SSteve Glendinning 	ret = usbnet_suspend(intf, message);
1317b052e073SSteve Glendinning 	if (ret < 0) {
1318b052e073SSteve Glendinning 		netdev_warn(dev->net, "usbnet_suspend error\n");
1319b052e073SSteve Glendinning 		return ret;
1320b052e073SSteve Glendinning 	}
1321b5a04475SSteve Glendinning 
1322e5e3af83SSteve Glendinning 	/* determine if link is up using only _nopm functions */
1323e5e3af83SSteve Glendinning 	link_up = smsc95xx_link_ok_nopm(dev);
1324e5e3af83SSteve Glendinning 
1325e5e3af83SSteve Glendinning 	/* if no wol options set, or if link is down and we're not waking on
1326e5e3af83SSteve Glendinning 	 * PHY activity, enter lowest power SUSPEND2 mode
1327e5e3af83SSteve Glendinning 	 */
1328e5e3af83SSteve Glendinning 	if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1329e5e3af83SSteve Glendinning 		!(link_up || (pdata->wolopts & WAKE_PHY))) {
13301e1d7412SJoe Perches 		netdev_info(dev->net, "entering SUSPEND2 mode\n");
1331b5a04475SSteve Glendinning 
1332e0e474a8SSteve Glendinning 		/* disable energy detect (link up) & wake up events */
1333ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1334*e360a8b4SSteve Glendinning 		if (ret < 0)
1335b052e073SSteve Glendinning 			goto done;
1336e0e474a8SSteve Glendinning 
1337e0e474a8SSteve Glendinning 		val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
1338e0e474a8SSteve Glendinning 
1339ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1340*e360a8b4SSteve Glendinning 		if (ret < 0)
1341b052e073SSteve Glendinning 			goto done;
1342e0e474a8SSteve Glendinning 
1343ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1344*e360a8b4SSteve Glendinning 		if (ret < 0)
1345b052e073SSteve Glendinning 			goto done;
1346e0e474a8SSteve Glendinning 
1347e0e474a8SSteve Glendinning 		val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
1348e0e474a8SSteve Glendinning 
1349ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1350*e360a8b4SSteve Glendinning 		if (ret < 0)
1351b052e073SSteve Glendinning 			goto done;
1352e0e474a8SSteve Glendinning 
13533b9f7d8cSSteve Glendinning 		ret = smsc95xx_enter_suspend2(dev);
13543b9f7d8cSSteve Glendinning 		goto done;
1355b5a04475SSteve Glendinning 	}
1356b5a04475SSteve Glendinning 
1357e5e3af83SSteve Glendinning 	if (pdata->wolopts & WAKE_PHY) {
1358e5e3af83SSteve Glendinning 		ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1359e5e3af83SSteve Glendinning 			(PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_));
1360b052e073SSteve Glendinning 		if (ret < 0) {
1361b052e073SSteve Glendinning 			netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1362b052e073SSteve Glendinning 			goto done;
1363b052e073SSteve Glendinning 		}
1364e5e3af83SSteve Glendinning 
1365e5e3af83SSteve Glendinning 		/* if link is down then configure EDPD and enter SUSPEND1,
1366e5e3af83SSteve Glendinning 		 * otherwise enter SUSPEND0 below
1367e5e3af83SSteve Glendinning 		 */
1368e5e3af83SSteve Glendinning 		if (!link_up) {
13691e1d7412SJoe Perches 			netdev_info(dev->net, "entering SUSPEND1 mode\n");
13703b9f7d8cSSteve Glendinning 			ret = smsc95xx_enter_suspend1(dev);
13713b9f7d8cSSteve Glendinning 			goto done;
1372e5e3af83SSteve Glendinning 		}
1373e5e3af83SSteve Glendinning 	}
1374e5e3af83SSteve Glendinning 
1375bbd9f9eeSSteve Glendinning 	if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1376eed9a729SSteve Glendinning 		u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL);
137706a221beSMing Lei 		u32 command[2];
137806a221beSMing Lei 		u32 offset[2];
137906a221beSMing Lei 		u32 crc[4];
13809ebca507SSteve Glendinning 		int wuff_filter_count =
13819ebca507SSteve Glendinning 			(pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
13829ebca507SSteve Glendinning 			LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
1383bbd9f9eeSSteve Glendinning 		int i, filter = 0;
1384bbd9f9eeSSteve Glendinning 
1385eed9a729SSteve Glendinning 		if (!filter_mask) {
1386eed9a729SSteve Glendinning 			netdev_warn(dev->net, "Unable to allocate filter_mask\n");
13873b9f7d8cSSteve Glendinning 			ret = -ENOMEM;
13883b9f7d8cSSteve Glendinning 			goto done;
1389eed9a729SSteve Glendinning 		}
1390eed9a729SSteve Glendinning 
139106a221beSMing Lei 		memset(command, 0, sizeof(command));
139206a221beSMing Lei 		memset(offset, 0, sizeof(offset));
139306a221beSMing Lei 		memset(crc, 0, sizeof(crc));
139406a221beSMing Lei 
1395bbd9f9eeSSteve Glendinning 		if (pdata->wolopts & WAKE_BCAST) {
1396bbd9f9eeSSteve Glendinning 			const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
13971e1d7412SJoe Perches 			netdev_info(dev->net, "enabling broadcast detection\n");
1398bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4] = 0x003F;
1399bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 1] = 0x00;
1400bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 2] = 0x00;
1401bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 3] = 0x00;
1402bbd9f9eeSSteve Glendinning 			command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1403bbd9f9eeSSteve Glendinning 			offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1404bbd9f9eeSSteve Glendinning 			crc[filter/2] |= smsc_crc(bcast, 6, filter);
1405bbd9f9eeSSteve Glendinning 			filter++;
1406bbd9f9eeSSteve Glendinning 		}
1407bbd9f9eeSSteve Glendinning 
1408bbd9f9eeSSteve Glendinning 		if (pdata->wolopts & WAKE_MCAST) {
1409bbd9f9eeSSteve Glendinning 			const u8 mcast[] = {0x01, 0x00, 0x5E};
14101e1d7412SJoe Perches 			netdev_info(dev->net, "enabling multicast detection\n");
1411bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4] = 0x0007;
1412bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 1] = 0x00;
1413bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 2] = 0x00;
1414bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 3] = 0x00;
1415bbd9f9eeSSteve Glendinning 			command[filter/4] |= 0x09UL << ((filter % 4) * 8);
1416bbd9f9eeSSteve Glendinning 			offset[filter/4] |= 0x00  << ((filter % 4) * 8);
1417bbd9f9eeSSteve Glendinning 			crc[filter/2] |= smsc_crc(mcast, 3, filter);
1418bbd9f9eeSSteve Glendinning 			filter++;
1419bbd9f9eeSSteve Glendinning 		}
1420bbd9f9eeSSteve Glendinning 
1421bbd9f9eeSSteve Glendinning 		if (pdata->wolopts & WAKE_ARP) {
1422bbd9f9eeSSteve Glendinning 			const u8 arp[] = {0x08, 0x06};
14231e1d7412SJoe Perches 			netdev_info(dev->net, "enabling ARP detection\n");
1424bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4] = 0x0003;
1425bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 1] = 0x00;
1426bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 2] = 0x00;
1427bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 3] = 0x00;
1428bbd9f9eeSSteve Glendinning 			command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1429bbd9f9eeSSteve Glendinning 			offset[filter/4] |= 0x0C << ((filter % 4) * 8);
1430bbd9f9eeSSteve Glendinning 			crc[filter/2] |= smsc_crc(arp, 2, filter);
1431bbd9f9eeSSteve Glendinning 			filter++;
1432bbd9f9eeSSteve Glendinning 		}
1433bbd9f9eeSSteve Glendinning 
1434bbd9f9eeSSteve Glendinning 		if (pdata->wolopts & WAKE_UCAST) {
14351e1d7412SJoe Perches 			netdev_info(dev->net, "enabling unicast detection\n");
1436bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4] = 0x003F;
1437bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 1] = 0x00;
1438bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 2] = 0x00;
1439bbd9f9eeSSteve Glendinning 			filter_mask[filter * 4 + 3] = 0x00;
1440bbd9f9eeSSteve Glendinning 			command[filter/4] |= 0x01UL << ((filter % 4) * 8);
1441bbd9f9eeSSteve Glendinning 			offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1442bbd9f9eeSSteve Glendinning 			crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
1443bbd9f9eeSSteve Glendinning 			filter++;
1444bbd9f9eeSSteve Glendinning 		}
1445bbd9f9eeSSteve Glendinning 
14469ebca507SSteve Glendinning 		for (i = 0; i < (wuff_filter_count * 4); i++) {
1447ec32115dSMing Lei 			ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
1448b052e073SSteve Glendinning 			if (ret < 0) {
144906a221beSMing Lei 				kfree(filter_mask);
1450b052e073SSteve Glendinning 				goto done;
1451b052e073SSteve Glendinning 			}
1452bbd9f9eeSSteve Glendinning 		}
145306a221beSMing Lei 		kfree(filter_mask);
1454bbd9f9eeSSteve Glendinning 
14559ebca507SSteve Glendinning 		for (i = 0; i < (wuff_filter_count / 4); i++) {
1456ec32115dSMing Lei 			ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
1457*e360a8b4SSteve Glendinning 			if (ret < 0)
1458b052e073SSteve Glendinning 				goto done;
1459b052e073SSteve Glendinning 		}
1460bbd9f9eeSSteve Glendinning 
14619ebca507SSteve Glendinning 		for (i = 0; i < (wuff_filter_count / 4); i++) {
1462ec32115dSMing Lei 			ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
1463*e360a8b4SSteve Glendinning 			if (ret < 0)
1464b052e073SSteve Glendinning 				goto done;
1465b052e073SSteve Glendinning 		}
1466bbd9f9eeSSteve Glendinning 
14679ebca507SSteve Glendinning 		for (i = 0; i < (wuff_filter_count / 2); i++) {
1468ec32115dSMing Lei 			ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
1469*e360a8b4SSteve Glendinning 			if (ret < 0)
1470b052e073SSteve Glendinning 				goto done;
1471b052e073SSteve Glendinning 		}
1472bbd9f9eeSSteve Glendinning 
1473bbd9f9eeSSteve Glendinning 		/* clear any pending pattern match packet status */
1474ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1475*e360a8b4SSteve Glendinning 		if (ret < 0)
1476b052e073SSteve Glendinning 			goto done;
1477bbd9f9eeSSteve Glendinning 
1478bbd9f9eeSSteve Glendinning 		val |= WUCSR_WUFR_;
1479bbd9f9eeSSteve Glendinning 
1480ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1481*e360a8b4SSteve Glendinning 		if (ret < 0)
1482b052e073SSteve Glendinning 			goto done;
1483b052e073SSteve Glendinning 	}
1484bbd9f9eeSSteve Glendinning 
1485e0e474a8SSteve Glendinning 	if (pdata->wolopts & WAKE_MAGIC) {
1486e0e474a8SSteve Glendinning 		/* clear any pending magic packet status */
1487ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1488*e360a8b4SSteve Glendinning 		if (ret < 0)
1489b052e073SSteve Glendinning 			goto done;
1490e0e474a8SSteve Glendinning 
1491e0e474a8SSteve Glendinning 		val |= WUCSR_MPR_;
1492e0e474a8SSteve Glendinning 
1493ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1494*e360a8b4SSteve Glendinning 		if (ret < 0)
1495b052e073SSteve Glendinning 			goto done;
1496b052e073SSteve Glendinning 	}
1497e0e474a8SSteve Glendinning 
1498bbd9f9eeSSteve Glendinning 	/* enable/disable wakeup sources */
1499ec32115dSMing Lei 	ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1500*e360a8b4SSteve Glendinning 	if (ret < 0)
1501b052e073SSteve Glendinning 		goto done;
1502e0e474a8SSteve Glendinning 
1503bbd9f9eeSSteve Glendinning 	if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
15041e1d7412SJoe Perches 		netdev_info(dev->net, "enabling pattern match wakeup\n");
1505bbd9f9eeSSteve Glendinning 		val |= WUCSR_WAKE_EN_;
1506bbd9f9eeSSteve Glendinning 	} else {
15071e1d7412SJoe Perches 		netdev_info(dev->net, "disabling pattern match wakeup\n");
1508bbd9f9eeSSteve Glendinning 		val &= ~WUCSR_WAKE_EN_;
1509bbd9f9eeSSteve Glendinning 	}
1510bbd9f9eeSSteve Glendinning 
1511e0e474a8SSteve Glendinning 	if (pdata->wolopts & WAKE_MAGIC) {
15121e1d7412SJoe Perches 		netdev_info(dev->net, "enabling magic packet wakeup\n");
1513e0e474a8SSteve Glendinning 		val |= WUCSR_MPEN_;
1514e0e474a8SSteve Glendinning 	} else {
15151e1d7412SJoe Perches 		netdev_info(dev->net, "disabling magic packet wakeup\n");
1516e0e474a8SSteve Glendinning 		val &= ~WUCSR_MPEN_;
1517e0e474a8SSteve Glendinning 	}
1518e0e474a8SSteve Glendinning 
1519ec32115dSMing Lei 	ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1520*e360a8b4SSteve Glendinning 	if (ret < 0)
1521b052e073SSteve Glendinning 		goto done;
1522e0e474a8SSteve Glendinning 
1523e0e474a8SSteve Glendinning 	/* enable wol wakeup source */
1524ec32115dSMing Lei 	ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1525*e360a8b4SSteve Glendinning 	if (ret < 0)
1526b052e073SSteve Glendinning 		goto done;
1527e0e474a8SSteve Glendinning 
1528e0e474a8SSteve Glendinning 	val |= PM_CTL_WOL_EN_;
1529e0e474a8SSteve Glendinning 
1530e5e3af83SSteve Glendinning 	/* phy energy detect wakeup source */
1531e5e3af83SSteve Glendinning 	if (pdata->wolopts & WAKE_PHY)
1532e5e3af83SSteve Glendinning 		val |= PM_CTL_ED_EN_;
1533e5e3af83SSteve Glendinning 
1534ec32115dSMing Lei 	ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1535*e360a8b4SSteve Glendinning 	if (ret < 0)
1536b052e073SSteve Glendinning 		goto done;
1537e0e474a8SSteve Glendinning 
1538bbd9f9eeSSteve Glendinning 	/* enable receiver to enable frame reception */
1539ec32115dSMing Lei 	smsc95xx_start_rx_path(dev, 1);
1540e0e474a8SSteve Glendinning 
1541e0e474a8SSteve Glendinning 	/* some wol options are enabled, so enter SUSPEND0 */
15421e1d7412SJoe Perches 	netdev_info(dev->net, "entering SUSPEND0 mode\n");
15433b9f7d8cSSteve Glendinning 	ret = smsc95xx_enter_suspend0(dev);
15443b9f7d8cSSteve Glendinning 
15453b9f7d8cSSteve Glendinning done:
15463b9f7d8cSSteve Glendinning 	if (ret)
15473b9f7d8cSSteve Glendinning 		usbnet_resume(intf);
15483b9f7d8cSSteve Glendinning 	return ret;
1549e0e474a8SSteve Glendinning }
1550e0e474a8SSteve Glendinning 
1551e0e474a8SSteve Glendinning static int smsc95xx_resume(struct usb_interface *intf)
1552e0e474a8SSteve Glendinning {
1553e0e474a8SSteve Glendinning 	struct usbnet *dev = usb_get_intfdata(intf);
1554e0e474a8SSteve Glendinning 	struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1555e0e474a8SSteve Glendinning 	int ret;
1556e0e474a8SSteve Glendinning 	u32 val;
1557e0e474a8SSteve Glendinning 
1558e0e474a8SSteve Glendinning 	BUG_ON(!dev);
1559e0e474a8SSteve Glendinning 
1560bbd9f9eeSSteve Glendinning 	if (pdata->wolopts) {
1561bbd9f9eeSSteve Glendinning 		/* clear wake-up sources */
1562ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1563*e360a8b4SSteve Glendinning 		if (ret < 0)
1564b052e073SSteve Glendinning 			return ret;
1565e0e474a8SSteve Glendinning 
1566bbd9f9eeSSteve Glendinning 		val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
1567e0e474a8SSteve Glendinning 
1568ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1569*e360a8b4SSteve Glendinning 		if (ret < 0)
1570b052e073SSteve Glendinning 			return ret;
1571e0e474a8SSteve Glendinning 
1572e0e474a8SSteve Glendinning 		/* clear wake-up status */
1573ec32115dSMing Lei 		ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1574*e360a8b4SSteve Glendinning 		if (ret < 0)
1575b052e073SSteve Glendinning 			return ret;
1576e0e474a8SSteve Glendinning 
1577e0e474a8SSteve Glendinning 		val &= ~PM_CTL_WOL_EN_;
1578e0e474a8SSteve Glendinning 		val |= PM_CTL_WUPS_;
1579e0e474a8SSteve Glendinning 
1580ec32115dSMing Lei 		ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1581*e360a8b4SSteve Glendinning 		if (ret < 0)
1582b052e073SSteve Glendinning 			return ret;
1583b052e073SSteve Glendinning 	}
1584e0e474a8SSteve Glendinning 
1585af3d7c1eSSteve Glendinning 	ret = usbnet_resume(intf);
1586b052e073SSteve Glendinning 	if (ret < 0)
1587b052e073SSteve Glendinning 		netdev_warn(dev->net, "usbnet_resume error\n");
1588e0e474a8SSteve Glendinning 
1589b052e073SSteve Glendinning 	return ret;
1590e0e474a8SSteve Glendinning }
1591e0e474a8SSteve Glendinning 
15922f7ca802SSteve Glendinning static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
15932f7ca802SSteve Glendinning {
15942f7ca802SSteve Glendinning 	skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
15952f7ca802SSteve Glendinning 	skb->ip_summed = CHECKSUM_COMPLETE;
15962f7ca802SSteve Glendinning 	skb_trim(skb, skb->len - 2);
15972f7ca802SSteve Glendinning }
15982f7ca802SSteve Glendinning 
15992f7ca802SSteve Glendinning static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
16002f7ca802SSteve Glendinning {
16012f7ca802SSteve Glendinning 	while (skb->len > 0) {
16022f7ca802SSteve Glendinning 		u32 header, align_count;
16032f7ca802SSteve Glendinning 		struct sk_buff *ax_skb;
16042f7ca802SSteve Glendinning 		unsigned char *packet;
16052f7ca802SSteve Glendinning 		u16 size;
16062f7ca802SSteve Glendinning 
16072f7ca802SSteve Glendinning 		memcpy(&header, skb->data, sizeof(header));
16082f7ca802SSteve Glendinning 		le32_to_cpus(&header);
16092f7ca802SSteve Glendinning 		skb_pull(skb, 4 + NET_IP_ALIGN);
16102f7ca802SSteve Glendinning 		packet = skb->data;
16112f7ca802SSteve Glendinning 
16122f7ca802SSteve Glendinning 		/* get the packet length */
16132f7ca802SSteve Glendinning 		size = (u16)((header & RX_STS_FL_) >> 16);
16142f7ca802SSteve Glendinning 		align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
16152f7ca802SSteve Glendinning 
16162f7ca802SSteve Glendinning 		if (unlikely(header & RX_STS_ES_)) {
1617a475f603SJoe Perches 			netif_dbg(dev, rx_err, dev->net,
1618a475f603SJoe Perches 				  "Error header=0x%08x\n", header);
161980667ac1SHerbert Xu 			dev->net->stats.rx_errors++;
162080667ac1SHerbert Xu 			dev->net->stats.rx_dropped++;
16212f7ca802SSteve Glendinning 
16222f7ca802SSteve Glendinning 			if (header & RX_STS_CRC_) {
162380667ac1SHerbert Xu 				dev->net->stats.rx_crc_errors++;
16242f7ca802SSteve Glendinning 			} else {
16252f7ca802SSteve Glendinning 				if (header & (RX_STS_TL_ | RX_STS_RF_))
162680667ac1SHerbert Xu 					dev->net->stats.rx_frame_errors++;
16272f7ca802SSteve Glendinning 
16282f7ca802SSteve Glendinning 				if ((header & RX_STS_LE_) &&
16292f7ca802SSteve Glendinning 					(!(header & RX_STS_FT_)))
163080667ac1SHerbert Xu 					dev->net->stats.rx_length_errors++;
16312f7ca802SSteve Glendinning 			}
16322f7ca802SSteve Glendinning 		} else {
16332f7ca802SSteve Glendinning 			/* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
16342f7ca802SSteve Glendinning 			if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1635a475f603SJoe Perches 				netif_dbg(dev, rx_err, dev->net,
1636a475f603SJoe Perches 					  "size err header=0x%08x\n", header);
16372f7ca802SSteve Glendinning 				return 0;
16382f7ca802SSteve Glendinning 			}
16392f7ca802SSteve Glendinning 
16402f7ca802SSteve Glendinning 			/* last frame in this batch */
16412f7ca802SSteve Glendinning 			if (skb->len == size) {
164278e47fe4SMichał Mirosław 				if (dev->net->features & NETIF_F_RXCSUM)
16432f7ca802SSteve Glendinning 					smsc95xx_rx_csum_offload(skb);
1644df18accaSPeter Korsgaard 				skb_trim(skb, skb->len - 4); /* remove fcs */
16452f7ca802SSteve Glendinning 				skb->truesize = size + sizeof(struct sk_buff);
16462f7ca802SSteve Glendinning 
16472f7ca802SSteve Glendinning 				return 1;
16482f7ca802SSteve Glendinning 			}
16492f7ca802SSteve Glendinning 
16502f7ca802SSteve Glendinning 			ax_skb = skb_clone(skb, GFP_ATOMIC);
16512f7ca802SSteve Glendinning 			if (unlikely(!ax_skb)) {
165260b86755SJoe Perches 				netdev_warn(dev->net, "Error allocating skb\n");
16532f7ca802SSteve Glendinning 				return 0;
16542f7ca802SSteve Glendinning 			}
16552f7ca802SSteve Glendinning 
16562f7ca802SSteve Glendinning 			ax_skb->len = size;
16572f7ca802SSteve Glendinning 			ax_skb->data = packet;
16582f7ca802SSteve Glendinning 			skb_set_tail_pointer(ax_skb, size);
16592f7ca802SSteve Glendinning 
166078e47fe4SMichał Mirosław 			if (dev->net->features & NETIF_F_RXCSUM)
16612f7ca802SSteve Glendinning 				smsc95xx_rx_csum_offload(ax_skb);
1662df18accaSPeter Korsgaard 			skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
16632f7ca802SSteve Glendinning 			ax_skb->truesize = size + sizeof(struct sk_buff);
16642f7ca802SSteve Glendinning 
16652f7ca802SSteve Glendinning 			usbnet_skb_return(dev, ax_skb);
16662f7ca802SSteve Glendinning 		}
16672f7ca802SSteve Glendinning 
16682f7ca802SSteve Glendinning 		skb_pull(skb, size);
16692f7ca802SSteve Glendinning 
16702f7ca802SSteve Glendinning 		/* padding bytes before the next frame starts */
16712f7ca802SSteve Glendinning 		if (skb->len)
16722f7ca802SSteve Glendinning 			skb_pull(skb, align_count);
16732f7ca802SSteve Glendinning 	}
16742f7ca802SSteve Glendinning 
16752f7ca802SSteve Glendinning 	if (unlikely(skb->len < 0)) {
167660b86755SJoe Perches 		netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
16772f7ca802SSteve Glendinning 		return 0;
16782f7ca802SSteve Glendinning 	}
16792f7ca802SSteve Glendinning 
16802f7ca802SSteve Glendinning 	return 1;
16812f7ca802SSteve Glendinning }
16822f7ca802SSteve Glendinning 
1683f7b29271SSteve Glendinning static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
1684f7b29271SSteve Glendinning {
168555508d60SMichał Mirosław 	u16 low_16 = (u16)skb_checksum_start_offset(skb);
168655508d60SMichał Mirosław 	u16 high_16 = low_16 + skb->csum_offset;
1687f7b29271SSteve Glendinning 	return (high_16 << 16) | low_16;
1688f7b29271SSteve Glendinning }
1689f7b29271SSteve Glendinning 
16902f7ca802SSteve Glendinning static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
16912f7ca802SSteve Glendinning 					 struct sk_buff *skb, gfp_t flags)
16922f7ca802SSteve Glendinning {
169378e47fe4SMichał Mirosław 	bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
1694f7b29271SSteve Glendinning 	int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
16952f7ca802SSteve Glendinning 	u32 tx_cmd_a, tx_cmd_b;
16962f7ca802SSteve Glendinning 
1697f7b29271SSteve Glendinning 	/* We do not advertise SG, so skbs should be already linearized */
1698f7b29271SSteve Glendinning 	BUG_ON(skb_shinfo(skb)->nr_frags);
1699f7b29271SSteve Glendinning 
1700f7b29271SSteve Glendinning 	if (skb_headroom(skb) < overhead) {
17012f7ca802SSteve Glendinning 		struct sk_buff *skb2 = skb_copy_expand(skb,
1702f7b29271SSteve Glendinning 			overhead, 0, flags);
17032f7ca802SSteve Glendinning 		dev_kfree_skb_any(skb);
17042f7ca802SSteve Glendinning 		skb = skb2;
17052f7ca802SSteve Glendinning 		if (!skb)
17062f7ca802SSteve Glendinning 			return NULL;
17072f7ca802SSteve Glendinning 	}
17082f7ca802SSteve Glendinning 
1709f7b29271SSteve Glendinning 	if (csum) {
171011bc3088SSteve Glendinning 		if (skb->len <= 45) {
171111bc3088SSteve Glendinning 			/* workaround - hardware tx checksum does not work
171211bc3088SSteve Glendinning 			 * properly with extremely small packets */
171355508d60SMichał Mirosław 			long csstart = skb_checksum_start_offset(skb);
171411bc3088SSteve Glendinning 			__wsum calc = csum_partial(skb->data + csstart,
171511bc3088SSteve Glendinning 				skb->len - csstart, 0);
171611bc3088SSteve Glendinning 			*((__sum16 *)(skb->data + csstart
171711bc3088SSteve Glendinning 				+ skb->csum_offset)) = csum_fold(calc);
171811bc3088SSteve Glendinning 
171911bc3088SSteve Glendinning 			csum = false;
172011bc3088SSteve Glendinning 		} else {
1721f7b29271SSteve Glendinning 			u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
1722f7b29271SSteve Glendinning 			skb_push(skb, 4);
172300acda68SSteve Glendinning 			cpu_to_le32s(&csum_preamble);
1724f7b29271SSteve Glendinning 			memcpy(skb->data, &csum_preamble, 4);
1725f7b29271SSteve Glendinning 		}
172611bc3088SSteve Glendinning 	}
1727f7b29271SSteve Glendinning 
17282f7ca802SSteve Glendinning 	skb_push(skb, 4);
17292f7ca802SSteve Glendinning 	tx_cmd_b = (u32)(skb->len - 4);
1730f7b29271SSteve Glendinning 	if (csum)
1731f7b29271SSteve Glendinning 		tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
17322f7ca802SSteve Glendinning 	cpu_to_le32s(&tx_cmd_b);
17332f7ca802SSteve Glendinning 	memcpy(skb->data, &tx_cmd_b, 4);
17342f7ca802SSteve Glendinning 
17352f7ca802SSteve Glendinning 	skb_push(skb, 4);
17362f7ca802SSteve Glendinning 	tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
17372f7ca802SSteve Glendinning 		TX_CMD_A_LAST_SEG_;
17382f7ca802SSteve Glendinning 	cpu_to_le32s(&tx_cmd_a);
17392f7ca802SSteve Glendinning 	memcpy(skb->data, &tx_cmd_a, 4);
17402f7ca802SSteve Glendinning 
17412f7ca802SSteve Glendinning 	return skb;
17422f7ca802SSteve Glendinning }
17432f7ca802SSteve Glendinning 
17442f7ca802SSteve Glendinning static const struct driver_info smsc95xx_info = {
17452f7ca802SSteve Glendinning 	.description	= "smsc95xx USB 2.0 Ethernet",
17462f7ca802SSteve Glendinning 	.bind		= smsc95xx_bind,
17472f7ca802SSteve Glendinning 	.unbind		= smsc95xx_unbind,
17482f7ca802SSteve Glendinning 	.link_reset	= smsc95xx_link_reset,
17492f7ca802SSteve Glendinning 	.reset		= smsc95xx_reset,
17502f7ca802SSteve Glendinning 	.rx_fixup	= smsc95xx_rx_fixup,
17512f7ca802SSteve Glendinning 	.tx_fixup	= smsc95xx_tx_fixup,
17522f7ca802SSteve Glendinning 	.status		= smsc95xx_status,
175307d69d42SPaolo Pisati 	.flags		= FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
17542f7ca802SSteve Glendinning };
17552f7ca802SSteve Glendinning 
17562f7ca802SSteve Glendinning static const struct usb_device_id products[] = {
17572f7ca802SSteve Glendinning 	{
17582f7ca802SSteve Glendinning 		/* SMSC9500 USB Ethernet Device */
17592f7ca802SSteve Glendinning 		USB_DEVICE(0x0424, 0x9500),
17602f7ca802SSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17612f7ca802SSteve Glendinning 	},
1762726474b8SSteve Glendinning 	{
17636f41d12bSSteve Glendinning 		/* SMSC9505 USB Ethernet Device */
17646f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9505),
17656f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17666f41d12bSSteve Glendinning 	},
17676f41d12bSSteve Glendinning 	{
17686f41d12bSSteve Glendinning 		/* SMSC9500A USB Ethernet Device */
17696f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9E00),
17706f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17716f41d12bSSteve Glendinning 	},
17726f41d12bSSteve Glendinning 	{
17736f41d12bSSteve Glendinning 		/* SMSC9505A USB Ethernet Device */
17746f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9E01),
17756f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17766f41d12bSSteve Glendinning 	},
17776f41d12bSSteve Glendinning 	{
1778726474b8SSteve Glendinning 		/* SMSC9512/9514 USB Hub & Ethernet Device */
1779726474b8SSteve Glendinning 		USB_DEVICE(0x0424, 0xec00),
1780726474b8SSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
1781726474b8SSteve Glendinning 	},
17826f41d12bSSteve Glendinning 	{
17836f41d12bSSteve Glendinning 		/* SMSC9500 USB Ethernet Device (SAL10) */
17846f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9900),
17856f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17866f41d12bSSteve Glendinning 	},
17876f41d12bSSteve Glendinning 	{
17886f41d12bSSteve Glendinning 		/* SMSC9505 USB Ethernet Device (SAL10) */
17896f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9901),
17906f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17916f41d12bSSteve Glendinning 	},
17926f41d12bSSteve Glendinning 	{
17936f41d12bSSteve Glendinning 		/* SMSC9500A USB Ethernet Device (SAL10) */
17946f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9902),
17956f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
17966f41d12bSSteve Glendinning 	},
17976f41d12bSSteve Glendinning 	{
17986f41d12bSSteve Glendinning 		/* SMSC9505A USB Ethernet Device (SAL10) */
17996f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9903),
18006f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18016f41d12bSSteve Glendinning 	},
18026f41d12bSSteve Glendinning 	{
18036f41d12bSSteve Glendinning 		/* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
18046f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9904),
18056f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18066f41d12bSSteve Glendinning 	},
18076f41d12bSSteve Glendinning 	{
18086f41d12bSSteve Glendinning 		/* SMSC9500A USB Ethernet Device (HAL) */
18096f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9905),
18106f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18116f41d12bSSteve Glendinning 	},
18126f41d12bSSteve Glendinning 	{
18136f41d12bSSteve Glendinning 		/* SMSC9505A USB Ethernet Device (HAL) */
18146f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9906),
18156f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18166f41d12bSSteve Glendinning 	},
18176f41d12bSSteve Glendinning 	{
18186f41d12bSSteve Glendinning 		/* SMSC9500 USB Ethernet Device (Alternate ID) */
18196f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9907),
18206f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18216f41d12bSSteve Glendinning 	},
18226f41d12bSSteve Glendinning 	{
18236f41d12bSSteve Glendinning 		/* SMSC9500A USB Ethernet Device (Alternate ID) */
18246f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9908),
18256f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18266f41d12bSSteve Glendinning 	},
18276f41d12bSSteve Glendinning 	{
18286f41d12bSSteve Glendinning 		/* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
18296f41d12bSSteve Glendinning 		USB_DEVICE(0x0424, 0x9909),
18306f41d12bSSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
18316f41d12bSSteve Glendinning 	},
183288edaa41SSteve Glendinning 	{
183388edaa41SSteve Glendinning 		/* SMSC LAN9530 USB Ethernet Device */
183488edaa41SSteve Glendinning 		USB_DEVICE(0x0424, 0x9530),
183588edaa41SSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
183688edaa41SSteve Glendinning 	},
183788edaa41SSteve Glendinning 	{
183888edaa41SSteve Glendinning 		/* SMSC LAN9730 USB Ethernet Device */
183988edaa41SSteve Glendinning 		USB_DEVICE(0x0424, 0x9730),
184088edaa41SSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
184188edaa41SSteve Glendinning 	},
184288edaa41SSteve Glendinning 	{
184388edaa41SSteve Glendinning 		/* SMSC LAN89530 USB Ethernet Device */
184488edaa41SSteve Glendinning 		USB_DEVICE(0x0424, 0x9E08),
184588edaa41SSteve Glendinning 		.driver_info = (unsigned long) &smsc95xx_info,
184688edaa41SSteve Glendinning 	},
18472f7ca802SSteve Glendinning 	{ },		/* END */
18482f7ca802SSteve Glendinning };
18492f7ca802SSteve Glendinning MODULE_DEVICE_TABLE(usb, products);
18502f7ca802SSteve Glendinning 
18512f7ca802SSteve Glendinning static struct usb_driver smsc95xx_driver = {
18522f7ca802SSteve Glendinning 	.name		= "smsc95xx",
18532f7ca802SSteve Glendinning 	.id_table	= products,
18542f7ca802SSteve Glendinning 	.probe		= usbnet_probe,
1855b5a04475SSteve Glendinning 	.suspend	= smsc95xx_suspend,
1856e0e474a8SSteve Glendinning 	.resume		= smsc95xx_resume,
1857e0e474a8SSteve Glendinning 	.reset_resume	= smsc95xx_resume,
18582f7ca802SSteve Glendinning 	.disconnect	= usbnet_disconnect,
1859e1f12eb6SSarah Sharp 	.disable_hub_initiated_lpm = 1,
18602f7ca802SSteve Glendinning };
18612f7ca802SSteve Glendinning 
1862d632eb1bSGreg Kroah-Hartman module_usb_driver(smsc95xx_driver);
18632f7ca802SSteve Glendinning 
18642f7ca802SSteve Glendinning MODULE_AUTHOR("Nancy Lin");
186590b24cfbSSteve Glendinning MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
18662f7ca802SSteve Glendinning MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
18672f7ca802SSteve Glendinning MODULE_LICENSE("GPL");
1868