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2f7ca802 SG |
1 | /*************************************************************************** |
2 | * | |
3 | * Copyright (C) 2007-2008 SMSC | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | * | |
19 | *****************************************************************************/ | |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/kmod.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/ethtool.h> | |
27 | #include <linux/mii.h> | |
28 | #include <linux/usb.h> | |
29 | #include <linux/crc32.h> | |
30 | #include <linux/usb/usbnet.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
2f7ca802 SG |
32 | #include "smsc95xx.h" |
33 | ||
34 | #define SMSC_CHIPNAME "smsc95xx" | |
f7b29271 | 35 | #define SMSC_DRIVER_VERSION "1.0.4" |
2f7ca802 SG |
36 | #define HS_USB_PKT_SIZE (512) |
37 | #define FS_USB_PKT_SIZE (64) | |
38 | #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) | |
39 | #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) | |
40 | #define DEFAULT_BULK_IN_DELAY (0x00002000) | |
41 | #define MAX_SINGLE_PACKET_SIZE (2048) | |
42 | #define LAN95XX_EEPROM_MAGIC (0x9500) | |
43 | #define EEPROM_MAC_OFFSET (0x01) | |
f7b29271 | 44 | #define DEFAULT_TX_CSUM_ENABLE (true) |
2f7ca802 SG |
45 | #define DEFAULT_RX_CSUM_ENABLE (true) |
46 | #define SMSC95XX_INTERNAL_PHY_ID (1) | |
47 | #define SMSC95XX_TX_OVERHEAD (8) | |
f7b29271 | 48 | #define SMSC95XX_TX_OVERHEAD_CSUM (12) |
2f7ca802 SG |
49 | |
50 | struct smsc95xx_priv { | |
51 | u32 mac_cr; | |
3c0f3c60 MZ |
52 | u32 hash_hi; |
53 | u32 hash_lo; | |
2f7ca802 | 54 | spinlock_t mac_cr_lock; |
2f7ca802 SG |
55 | }; |
56 | ||
57 | struct usb_context { | |
58 | struct usb_ctrlrequest req; | |
2f7ca802 SG |
59 | struct usbnet *dev; |
60 | }; | |
61 | ||
eb939922 | 62 | static bool turbo_mode = true; |
2f7ca802 SG |
63 | module_param(turbo_mode, bool, 0644); |
64 | MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); | |
65 | ||
66 | static int smsc95xx_read_reg(struct usbnet *dev, u32 index, u32 *data) | |
67 | { | |
68 | u32 *buf = kmalloc(4, GFP_KERNEL); | |
69 | int ret; | |
70 | ||
71 | BUG_ON(!dev); | |
72 | ||
73 | if (!buf) | |
74 | return -ENOMEM; | |
75 | ||
76 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
77 | USB_VENDOR_REQUEST_READ_REGISTER, | |
78 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
79 | 00, index, buf, 4, USB_CTRL_GET_TIMEOUT); | |
80 | ||
81 | if (unlikely(ret < 0)) | |
60b86755 | 82 | netdev_warn(dev->net, "Failed to read register index 0x%08x\n", index); |
2f7ca802 SG |
83 | |
84 | le32_to_cpus(buf); | |
85 | *data = *buf; | |
86 | kfree(buf); | |
87 | ||
88 | return ret; | |
89 | } | |
90 | ||
91 | static int smsc95xx_write_reg(struct usbnet *dev, u32 index, u32 data) | |
92 | { | |
93 | u32 *buf = kmalloc(4, GFP_KERNEL); | |
94 | int ret; | |
95 | ||
96 | BUG_ON(!dev); | |
97 | ||
98 | if (!buf) | |
99 | return -ENOMEM; | |
100 | ||
101 | *buf = data; | |
102 | cpu_to_le32s(buf); | |
103 | ||
104 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
105 | USB_VENDOR_REQUEST_WRITE_REGISTER, | |
106 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
107 | 00, index, buf, 4, USB_CTRL_SET_TIMEOUT); | |
108 | ||
109 | if (unlikely(ret < 0)) | |
60b86755 | 110 | netdev_warn(dev->net, "Failed to write register index 0x%08x\n", index); |
2f7ca802 SG |
111 | |
112 | kfree(buf); | |
113 | ||
114 | return ret; | |
115 | } | |
116 | ||
117 | /* Loop until the read is completed with timeout | |
118 | * called with phy_mutex held */ | |
119 | static int smsc95xx_phy_wait_not_busy(struct usbnet *dev) | |
120 | { | |
121 | unsigned long start_time = jiffies; | |
122 | u32 val; | |
123 | ||
124 | do { | |
125 | smsc95xx_read_reg(dev, MII_ADDR, &val); | |
126 | if (!(val & MII_BUSY_)) | |
127 | return 0; | |
128 | } while (!time_after(jiffies, start_time + HZ)); | |
129 | ||
130 | return -EIO; | |
131 | } | |
132 | ||
133 | static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) | |
134 | { | |
135 | struct usbnet *dev = netdev_priv(netdev); | |
136 | u32 val, addr; | |
137 | ||
138 | mutex_lock(&dev->phy_mutex); | |
139 | ||
140 | /* confirm MII not busy */ | |
141 | if (smsc95xx_phy_wait_not_busy(dev)) { | |
60b86755 | 142 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); |
2f7ca802 SG |
143 | mutex_unlock(&dev->phy_mutex); |
144 | return -EIO; | |
145 | } | |
146 | ||
147 | /* set the address, index & direction (read from PHY) */ | |
148 | phy_id &= dev->mii.phy_id_mask; | |
149 | idx &= dev->mii.reg_num_mask; | |
150 | addr = (phy_id << 11) | (idx << 6) | MII_READ_; | |
151 | smsc95xx_write_reg(dev, MII_ADDR, addr); | |
152 | ||
153 | if (smsc95xx_phy_wait_not_busy(dev)) { | |
60b86755 | 154 | netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); |
2f7ca802 SG |
155 | mutex_unlock(&dev->phy_mutex); |
156 | return -EIO; | |
157 | } | |
158 | ||
159 | smsc95xx_read_reg(dev, MII_DATA, &val); | |
160 | ||
161 | mutex_unlock(&dev->phy_mutex); | |
162 | ||
163 | return (u16)(val & 0xFFFF); | |
164 | } | |
165 | ||
166 | static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, | |
167 | int regval) | |
168 | { | |
169 | struct usbnet *dev = netdev_priv(netdev); | |
170 | u32 val, addr; | |
171 | ||
172 | mutex_lock(&dev->phy_mutex); | |
173 | ||
174 | /* confirm MII not busy */ | |
175 | if (smsc95xx_phy_wait_not_busy(dev)) { | |
60b86755 | 176 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); |
2f7ca802 SG |
177 | mutex_unlock(&dev->phy_mutex); |
178 | return; | |
179 | } | |
180 | ||
181 | val = regval; | |
182 | smsc95xx_write_reg(dev, MII_DATA, val); | |
183 | ||
184 | /* set the address, index & direction (write to PHY) */ | |
185 | phy_id &= dev->mii.phy_id_mask; | |
186 | idx &= dev->mii.reg_num_mask; | |
187 | addr = (phy_id << 11) | (idx << 6) | MII_WRITE_; | |
188 | smsc95xx_write_reg(dev, MII_ADDR, addr); | |
189 | ||
190 | if (smsc95xx_phy_wait_not_busy(dev)) | |
60b86755 | 191 | netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); |
2f7ca802 SG |
192 | |
193 | mutex_unlock(&dev->phy_mutex); | |
194 | } | |
195 | ||
196 | static int smsc95xx_wait_eeprom(struct usbnet *dev) | |
197 | { | |
198 | unsigned long start_time = jiffies; | |
199 | u32 val; | |
200 | ||
201 | do { | |
202 | smsc95xx_read_reg(dev, E2P_CMD, &val); | |
203 | if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) | |
204 | break; | |
205 | udelay(40); | |
206 | } while (!time_after(jiffies, start_time + HZ)); | |
207 | ||
208 | if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { | |
60b86755 | 209 | netdev_warn(dev->net, "EEPROM read operation timeout\n"); |
2f7ca802 SG |
210 | return -EIO; |
211 | } | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) | |
217 | { | |
218 | unsigned long start_time = jiffies; | |
219 | u32 val; | |
220 | ||
221 | do { | |
222 | smsc95xx_read_reg(dev, E2P_CMD, &val); | |
223 | ||
2f7ca802 SG |
224 | if (!(val & E2P_CMD_BUSY_)) |
225 | return 0; | |
226 | ||
227 | udelay(40); | |
228 | } while (!time_after(jiffies, start_time + HZ)); | |
229 | ||
60b86755 | 230 | netdev_warn(dev->net, "EEPROM is busy\n"); |
2f7ca802 SG |
231 | return -EIO; |
232 | } | |
233 | ||
234 | static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, | |
235 | u8 *data) | |
236 | { | |
237 | u32 val; | |
238 | int i, ret; | |
239 | ||
240 | BUG_ON(!dev); | |
241 | BUG_ON(!data); | |
242 | ||
243 | ret = smsc95xx_eeprom_confirm_not_busy(dev); | |
244 | if (ret) | |
245 | return ret; | |
246 | ||
247 | for (i = 0; i < length; i++) { | |
248 | val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); | |
249 | smsc95xx_write_reg(dev, E2P_CMD, val); | |
250 | ||
251 | ret = smsc95xx_wait_eeprom(dev); | |
252 | if (ret < 0) | |
253 | return ret; | |
254 | ||
255 | smsc95xx_read_reg(dev, E2P_DATA, &val); | |
256 | ||
257 | data[i] = val & 0xFF; | |
258 | offset++; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, | |
265 | u8 *data) | |
266 | { | |
267 | u32 val; | |
268 | int i, ret; | |
269 | ||
270 | BUG_ON(!dev); | |
271 | BUG_ON(!data); | |
272 | ||
273 | ret = smsc95xx_eeprom_confirm_not_busy(dev); | |
274 | if (ret) | |
275 | return ret; | |
276 | ||
277 | /* Issue write/erase enable command */ | |
278 | val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; | |
279 | smsc95xx_write_reg(dev, E2P_CMD, val); | |
280 | ||
281 | ret = smsc95xx_wait_eeprom(dev); | |
282 | if (ret < 0) | |
283 | return ret; | |
284 | ||
285 | for (i = 0; i < length; i++) { | |
286 | ||
287 | /* Fill data register */ | |
288 | val = data[i]; | |
289 | smsc95xx_write_reg(dev, E2P_DATA, val); | |
290 | ||
291 | /* Send "write" command */ | |
292 | val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); | |
293 | smsc95xx_write_reg(dev, E2P_CMD, val); | |
294 | ||
295 | ret = smsc95xx_wait_eeprom(dev); | |
296 | if (ret < 0) | |
297 | return ret; | |
298 | ||
299 | offset++; | |
300 | } | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
150a7fcc | 305 | static void smsc95xx_async_cmd_callback(struct urb *urb) |
2f7ca802 SG |
306 | { |
307 | struct usb_context *usb_context = urb->context; | |
308 | struct usbnet *dev = usb_context->dev; | |
c94cb314 | 309 | int status = urb->status; |
2f7ca802 | 310 | |
c94cb314 | 311 | if (status < 0) |
60b86755 | 312 | netdev_warn(dev->net, "async callback failed with %d\n", status); |
2f7ca802 | 313 | |
2f7ca802 SG |
314 | kfree(usb_context); |
315 | usb_free_urb(urb); | |
316 | } | |
317 | ||
1d74a6bd | 318 | static int smsc95xx_write_reg_async(struct usbnet *dev, u16 index, u32 *data) |
2f7ca802 SG |
319 | { |
320 | struct usb_context *usb_context; | |
321 | int status; | |
322 | struct urb *urb; | |
1d74a6bd | 323 | const u16 size = 4; |
2f7ca802 SG |
324 | |
325 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
326 | if (!urb) { | |
60b86755 | 327 | netdev_warn(dev->net, "Error allocating URB\n"); |
2f7ca802 SG |
328 | return -ENOMEM; |
329 | } | |
330 | ||
331 | usb_context = kmalloc(sizeof(struct usb_context), GFP_ATOMIC); | |
332 | if (usb_context == NULL) { | |
60b86755 | 333 | netdev_warn(dev->net, "Error allocating control msg\n"); |
2f7ca802 SG |
334 | usb_free_urb(urb); |
335 | return -ENOMEM; | |
336 | } | |
337 | ||
338 | usb_context->req.bRequestType = | |
339 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; | |
340 | usb_context->req.bRequest = USB_VENDOR_REQUEST_WRITE_REGISTER; | |
341 | usb_context->req.wValue = 00; | |
1d74a6bd SG |
342 | usb_context->req.wIndex = cpu_to_le16(index); |
343 | usb_context->req.wLength = cpu_to_le16(size); | |
2f7ca802 SG |
344 | |
345 | usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
346 | (void *)&usb_context->req, data, size, | |
150a7fcc | 347 | smsc95xx_async_cmd_callback, |
2f7ca802 SG |
348 | (void *)usb_context); |
349 | ||
350 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
351 | if (status < 0) { | |
60b86755 JP |
352 | netdev_warn(dev->net, "Error submitting control msg, sts=%d\n", |
353 | status); | |
2f7ca802 SG |
354 | kfree(usb_context); |
355 | usb_free_urb(urb); | |
356 | } | |
357 | ||
358 | return status; | |
359 | } | |
360 | ||
361 | /* returns hash bit number for given MAC address | |
362 | * example: | |
363 | * 01 00 5E 00 00 01 -> returns bit number 31 */ | |
364 | static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) | |
365 | { | |
366 | return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; | |
367 | } | |
368 | ||
369 | static void smsc95xx_set_multicast(struct net_device *netdev) | |
370 | { | |
371 | struct usbnet *dev = netdev_priv(netdev); | |
372 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
2f7ca802 SG |
373 | unsigned long flags; |
374 | ||
3c0f3c60 MZ |
375 | pdata->hash_hi = 0; |
376 | pdata->hash_lo = 0; | |
377 | ||
2f7ca802 SG |
378 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
379 | ||
380 | if (dev->net->flags & IFF_PROMISC) { | |
a475f603 | 381 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); |
2f7ca802 SG |
382 | pdata->mac_cr |= MAC_CR_PRMS_; |
383 | pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); | |
384 | } else if (dev->net->flags & IFF_ALLMULTI) { | |
a475f603 | 385 | netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); |
2f7ca802 SG |
386 | pdata->mac_cr |= MAC_CR_MCPAS_; |
387 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); | |
4cd24eaf | 388 | } else if (!netdev_mc_empty(dev->net)) { |
22bedad3 | 389 | struct netdev_hw_addr *ha; |
2f7ca802 SG |
390 | |
391 | pdata->mac_cr |= MAC_CR_HPFILT_; | |
392 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); | |
393 | ||
22bedad3 JP |
394 | netdev_for_each_mc_addr(ha, netdev) { |
395 | u32 bitnum = smsc95xx_hash(ha->addr); | |
a92635dc JP |
396 | u32 mask = 0x01 << (bitnum & 0x1F); |
397 | if (bitnum & 0x20) | |
3c0f3c60 | 398 | pdata->hash_hi |= mask; |
a92635dc | 399 | else |
3c0f3c60 | 400 | pdata->hash_lo |= mask; |
2f7ca802 SG |
401 | } |
402 | ||
a475f603 | 403 | netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", |
3c0f3c60 | 404 | pdata->hash_hi, pdata->hash_lo); |
2f7ca802 | 405 | } else { |
a475f603 | 406 | netif_dbg(dev, drv, dev->net, "receive own packets only\n"); |
2f7ca802 SG |
407 | pdata->mac_cr &= |
408 | ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); | |
409 | } | |
410 | ||
411 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); | |
412 | ||
413 | /* Initiate async writes, as we can't wait for completion here */ | |
3c0f3c60 MZ |
414 | smsc95xx_write_reg_async(dev, HASHH, &pdata->hash_hi); |
415 | smsc95xx_write_reg_async(dev, HASHL, &pdata->hash_lo); | |
2f7ca802 SG |
416 | smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr); |
417 | } | |
418 | ||
2f7ca802 SG |
419 | static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, |
420 | u16 lcladv, u16 rmtadv) | |
421 | { | |
422 | u32 flow, afc_cfg = 0; | |
423 | ||
424 | int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); | |
425 | if (ret < 0) { | |
60b86755 | 426 | netdev_warn(dev->net, "error reading AFC_CFG\n"); |
2f7ca802 SG |
427 | return; |
428 | } | |
429 | ||
430 | if (duplex == DUPLEX_FULL) { | |
bc02ff95 | 431 | u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
2f7ca802 SG |
432 | |
433 | if (cap & FLOW_CTRL_RX) | |
434 | flow = 0xFFFF0002; | |
435 | else | |
436 | flow = 0; | |
437 | ||
438 | if (cap & FLOW_CTRL_TX) | |
439 | afc_cfg |= 0xF; | |
440 | else | |
441 | afc_cfg &= ~0xF; | |
442 | ||
a475f603 | 443 | netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", |
60b86755 JP |
444 | cap & FLOW_CTRL_RX ? "enabled" : "disabled", |
445 | cap & FLOW_CTRL_TX ? "enabled" : "disabled"); | |
2f7ca802 | 446 | } else { |
a475f603 | 447 | netif_dbg(dev, link, dev->net, "half duplex\n"); |
2f7ca802 SG |
448 | flow = 0; |
449 | afc_cfg |= 0xF; | |
450 | } | |
451 | ||
452 | smsc95xx_write_reg(dev, FLOW, flow); | |
453 | smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); | |
454 | } | |
455 | ||
456 | static int smsc95xx_link_reset(struct usbnet *dev) | |
457 | { | |
458 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
459 | struct mii_if_info *mii = &dev->mii; | |
8ae6daca | 460 | struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
2f7ca802 SG |
461 | unsigned long flags; |
462 | u16 lcladv, rmtadv; | |
463 | u32 intdata; | |
464 | ||
465 | /* clear interrupt status */ | |
466 | smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); | |
467 | intdata = 0xFFFFFFFF; | |
468 | smsc95xx_write_reg(dev, INT_STS, intdata); | |
469 | ||
470 | mii_check_media(mii, 1, 1); | |
471 | mii_ethtool_gset(&dev->mii, &ecmd); | |
472 | lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); | |
473 | rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); | |
474 | ||
8ae6daca DD |
475 | netif_dbg(dev, link, dev->net, |
476 | "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", | |
477 | ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); | |
2f7ca802 SG |
478 | |
479 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); | |
480 | if (ecmd.duplex != DUPLEX_FULL) { | |
481 | pdata->mac_cr &= ~MAC_CR_FDPX_; | |
482 | pdata->mac_cr |= MAC_CR_RCVOWN_; | |
483 | } else { | |
484 | pdata->mac_cr &= ~MAC_CR_RCVOWN_; | |
485 | pdata->mac_cr |= MAC_CR_FDPX_; | |
486 | } | |
487 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); | |
488 | ||
489 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); | |
490 | ||
491 | smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | static void smsc95xx_status(struct usbnet *dev, struct urb *urb) | |
497 | { | |
498 | u32 intdata; | |
499 | ||
500 | if (urb->actual_length != 4) { | |
60b86755 JP |
501 | netdev_warn(dev->net, "unexpected urb length %d\n", |
502 | urb->actual_length); | |
2f7ca802 SG |
503 | return; |
504 | } | |
505 | ||
506 | memcpy(&intdata, urb->transfer_buffer, 4); | |
1d74a6bd | 507 | le32_to_cpus(&intdata); |
2f7ca802 | 508 | |
a475f603 | 509 | netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); |
2f7ca802 SG |
510 | |
511 | if (intdata & INT_ENP_PHY_INT_) | |
512 | usbnet_defer_kevent(dev, EVENT_LINK_RESET); | |
513 | else | |
60b86755 JP |
514 | netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", |
515 | intdata); | |
2f7ca802 SG |
516 | } |
517 | ||
f7b29271 | 518 | /* Enable or disable Tx & Rx checksum offload engines */ |
c8f44aff MM |
519 | static int smsc95xx_set_features(struct net_device *netdev, |
520 | netdev_features_t features) | |
2f7ca802 | 521 | { |
78e47fe4 | 522 | struct usbnet *dev = netdev_priv(netdev); |
2f7ca802 | 523 | u32 read_buf; |
78e47fe4 MM |
524 | int ret; |
525 | ||
526 | ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); | |
2f7ca802 | 527 | if (ret < 0) { |
60b86755 | 528 | netdev_warn(dev->net, "Failed to read COE_CR: %d\n", ret); |
2f7ca802 SG |
529 | return ret; |
530 | } | |
531 | ||
78e47fe4 | 532 | if (features & NETIF_F_HW_CSUM) |
f7b29271 SG |
533 | read_buf |= Tx_COE_EN_; |
534 | else | |
535 | read_buf &= ~Tx_COE_EN_; | |
536 | ||
78e47fe4 | 537 | if (features & NETIF_F_RXCSUM) |
2f7ca802 SG |
538 | read_buf |= Rx_COE_EN_; |
539 | else | |
540 | read_buf &= ~Rx_COE_EN_; | |
541 | ||
542 | ret = smsc95xx_write_reg(dev, COE_CR, read_buf); | |
543 | if (ret < 0) { | |
60b86755 | 544 | netdev_warn(dev->net, "Failed to write COE_CR: %d\n", ret); |
2f7ca802 SG |
545 | return ret; |
546 | } | |
547 | ||
a475f603 | 548 | netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); |
2f7ca802 SG |
549 | return 0; |
550 | } | |
551 | ||
552 | static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) | |
553 | { | |
554 | return MAX_EEPROM_SIZE; | |
555 | } | |
556 | ||
557 | static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, | |
558 | struct ethtool_eeprom *ee, u8 *data) | |
559 | { | |
560 | struct usbnet *dev = netdev_priv(netdev); | |
561 | ||
562 | ee->magic = LAN95XX_EEPROM_MAGIC; | |
563 | ||
564 | return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); | |
565 | } | |
566 | ||
567 | static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, | |
568 | struct ethtool_eeprom *ee, u8 *data) | |
569 | { | |
570 | struct usbnet *dev = netdev_priv(netdev); | |
571 | ||
572 | if (ee->magic != LAN95XX_EEPROM_MAGIC) { | |
60b86755 JP |
573 | netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", |
574 | ee->magic); | |
2f7ca802 SG |
575 | return -EINVAL; |
576 | } | |
577 | ||
578 | return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); | |
579 | } | |
580 | ||
9fa32e94 EV |
581 | static int smsc95xx_ethtool_getregslen(struct net_device *netdev) |
582 | { | |
583 | /* all smsc95xx registers */ | |
584 | return COE_CR - ID_REV + 1; | |
585 | } | |
586 | ||
587 | static void | |
588 | smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, | |
589 | void *buf) | |
590 | { | |
591 | struct usbnet *dev = netdev_priv(netdev); | |
592 | unsigned int i, j, retval; | |
593 | u32 *data = buf; | |
594 | ||
595 | retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); | |
596 | if (retval < 0) { | |
597 | netdev_warn(netdev, "REGS: cannot read ID_REV\n"); | |
598 | return; | |
599 | } | |
600 | ||
601 | for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { | |
602 | retval = smsc95xx_read_reg(dev, i, &data[j]); | |
603 | if (retval < 0) { | |
604 | netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); | |
605 | return; | |
606 | } | |
607 | } | |
608 | } | |
609 | ||
0fc0b732 | 610 | static const struct ethtool_ops smsc95xx_ethtool_ops = { |
2f7ca802 SG |
611 | .get_link = usbnet_get_link, |
612 | .nway_reset = usbnet_nway_reset, | |
613 | .get_drvinfo = usbnet_get_drvinfo, | |
614 | .get_msglevel = usbnet_get_msglevel, | |
615 | .set_msglevel = usbnet_set_msglevel, | |
616 | .get_settings = usbnet_get_settings, | |
617 | .set_settings = usbnet_set_settings, | |
618 | .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, | |
619 | .get_eeprom = smsc95xx_ethtool_get_eeprom, | |
620 | .set_eeprom = smsc95xx_ethtool_set_eeprom, | |
9fa32e94 EV |
621 | .get_regs_len = smsc95xx_ethtool_getregslen, |
622 | .get_regs = smsc95xx_ethtool_getregs, | |
2f7ca802 SG |
623 | }; |
624 | ||
625 | static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | |
626 | { | |
627 | struct usbnet *dev = netdev_priv(netdev); | |
628 | ||
629 | if (!netif_running(netdev)) | |
630 | return -EINVAL; | |
631 | ||
632 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
633 | } | |
634 | ||
635 | static void smsc95xx_init_mac_address(struct usbnet *dev) | |
636 | { | |
637 | /* try reading mac address from EEPROM */ | |
638 | if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, | |
639 | dev->net->dev_addr) == 0) { | |
640 | if (is_valid_ether_addr(dev->net->dev_addr)) { | |
641 | /* eeprom values are valid so use them */ | |
a475f603 | 642 | netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); |
2f7ca802 SG |
643 | return; |
644 | } | |
645 | } | |
646 | ||
647 | /* no eeprom, or eeprom values are invalid. generate random MAC */ | |
f2cedb63 | 648 | eth_hw_addr_random(dev->net); |
a475f603 | 649 | netif_dbg(dev, ifup, dev->net, "MAC address set to random_ether_addr\n"); |
2f7ca802 SG |
650 | } |
651 | ||
652 | static int smsc95xx_set_mac_address(struct usbnet *dev) | |
653 | { | |
654 | u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | | |
655 | dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; | |
656 | u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; | |
657 | int ret; | |
658 | ||
659 | ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); | |
660 | if (ret < 0) { | |
60b86755 | 661 | netdev_warn(dev->net, "Failed to write ADDRL: %d\n", ret); |
2f7ca802 SG |
662 | return ret; |
663 | } | |
664 | ||
665 | ret = smsc95xx_write_reg(dev, ADDRH, addr_hi); | |
666 | if (ret < 0) { | |
60b86755 | 667 | netdev_warn(dev->net, "Failed to write ADDRH: %d\n", ret); |
2f7ca802 SG |
668 | return ret; |
669 | } | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | /* starts the TX path */ | |
675 | static void smsc95xx_start_tx_path(struct usbnet *dev) | |
676 | { | |
677 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
678 | unsigned long flags; | |
679 | u32 reg_val; | |
680 | ||
681 | /* Enable Tx at MAC */ | |
682 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); | |
683 | pdata->mac_cr |= MAC_CR_TXEN_; | |
684 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); | |
685 | ||
686 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); | |
687 | ||
688 | /* Enable Tx at SCSRs */ | |
689 | reg_val = TX_CFG_ON_; | |
690 | smsc95xx_write_reg(dev, TX_CFG, reg_val); | |
691 | } | |
692 | ||
693 | /* Starts the Receive path */ | |
694 | static void smsc95xx_start_rx_path(struct usbnet *dev) | |
695 | { | |
696 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
697 | unsigned long flags; | |
698 | ||
699 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); | |
700 | pdata->mac_cr |= MAC_CR_RXEN_; | |
701 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); | |
702 | ||
703 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); | |
704 | } | |
705 | ||
706 | static int smsc95xx_phy_initialize(struct usbnet *dev) | |
707 | { | |
db443c44 SG |
708 | int bmcr, timeout = 0; |
709 | ||
2f7ca802 SG |
710 | /* Initialize MII structure */ |
711 | dev->mii.dev = dev->net; | |
712 | dev->mii.mdio_read = smsc95xx_mdio_read; | |
713 | dev->mii.mdio_write = smsc95xx_mdio_write; | |
714 | dev->mii.phy_id_mask = 0x1f; | |
715 | dev->mii.reg_num_mask = 0x1f; | |
716 | dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; | |
717 | ||
db443c44 | 718 | /* reset phy and wait for reset to complete */ |
2f7ca802 | 719 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); |
db443c44 SG |
720 | |
721 | do { | |
722 | msleep(10); | |
723 | bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); | |
724 | timeout++; | |
d9460920 | 725 | } while ((bmcr & BMCR_RESET) && (timeout < 100)); |
db443c44 SG |
726 | |
727 | if (timeout >= 100) { | |
728 | netdev_warn(dev->net, "timeout on PHY Reset"); | |
729 | return -EIO; | |
730 | } | |
731 | ||
2f7ca802 SG |
732 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, |
733 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | | |
734 | ADVERTISE_PAUSE_ASYM); | |
735 | ||
736 | /* read to clear */ | |
737 | smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); | |
738 | ||
739 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, | |
740 | PHY_INT_MASK_DEFAULT_); | |
741 | mii_nway_restart(&dev->mii); | |
742 | ||
a475f603 | 743 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); |
2f7ca802 SG |
744 | return 0; |
745 | } | |
746 | ||
747 | static int smsc95xx_reset(struct usbnet *dev) | |
748 | { | |
749 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
750 | u32 read_buf, write_buf, burst_cap; | |
751 | int ret = 0, timeout; | |
2f7ca802 | 752 | |
a475f603 | 753 | netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); |
2f7ca802 SG |
754 | |
755 | write_buf = HW_CFG_LRST_; | |
756 | ret = smsc95xx_write_reg(dev, HW_CFG, write_buf); | |
757 | if (ret < 0) { | |
60b86755 JP |
758 | netdev_warn(dev->net, "Failed to write HW_CFG_LRST_ bit in HW_CFG register, ret = %d\n", |
759 | ret); | |
2f7ca802 SG |
760 | return ret; |
761 | } | |
762 | ||
763 | timeout = 0; | |
764 | do { | |
765 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); | |
766 | if (ret < 0) { | |
60b86755 | 767 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
2f7ca802 SG |
768 | return ret; |
769 | } | |
770 | msleep(10); | |
771 | timeout++; | |
772 | } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); | |
773 | ||
774 | if (timeout >= 100) { | |
60b86755 | 775 | netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); |
2f7ca802 SG |
776 | return ret; |
777 | } | |
778 | ||
779 | write_buf = PM_CTL_PHY_RST_; | |
780 | ret = smsc95xx_write_reg(dev, PM_CTRL, write_buf); | |
781 | if (ret < 0) { | |
60b86755 | 782 | netdev_warn(dev->net, "Failed to write PM_CTRL: %d\n", ret); |
2f7ca802 SG |
783 | return ret; |
784 | } | |
785 | ||
786 | timeout = 0; | |
787 | do { | |
788 | ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); | |
789 | if (ret < 0) { | |
60b86755 | 790 | netdev_warn(dev->net, "Failed to read PM_CTRL: %d\n", ret); |
2f7ca802 SG |
791 | return ret; |
792 | } | |
793 | msleep(10); | |
794 | timeout++; | |
795 | } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); | |
796 | ||
797 | if (timeout >= 100) { | |
60b86755 | 798 | netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); |
2f7ca802 SG |
799 | return ret; |
800 | } | |
801 | ||
2f7ca802 SG |
802 | ret = smsc95xx_set_mac_address(dev); |
803 | if (ret < 0) | |
804 | return ret; | |
805 | ||
a475f603 JP |
806 | netif_dbg(dev, ifup, dev->net, |
807 | "MAC Address: %pM\n", dev->net->dev_addr); | |
2f7ca802 SG |
808 | |
809 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); | |
810 | if (ret < 0) { | |
60b86755 | 811 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
2f7ca802 SG |
812 | return ret; |
813 | } | |
814 | ||
a475f603 JP |
815 | netif_dbg(dev, ifup, dev->net, |
816 | "Read Value from HW_CFG : 0x%08x\n", read_buf); | |
2f7ca802 SG |
817 | |
818 | read_buf |= HW_CFG_BIR_; | |
819 | ||
820 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); | |
821 | if (ret < 0) { | |
60b86755 JP |
822 | netdev_warn(dev->net, "Failed to write HW_CFG_BIR_ bit in HW_CFG register, ret = %d\n", |
823 | ret); | |
2f7ca802 SG |
824 | return ret; |
825 | } | |
826 | ||
827 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); | |
828 | if (ret < 0) { | |
60b86755 | 829 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
2f7ca802 SG |
830 | return ret; |
831 | } | |
a475f603 JP |
832 | netif_dbg(dev, ifup, dev->net, |
833 | "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", | |
834 | read_buf); | |
2f7ca802 SG |
835 | |
836 | if (!turbo_mode) { | |
837 | burst_cap = 0; | |
838 | dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; | |
839 | } else if (dev->udev->speed == USB_SPEED_HIGH) { | |
840 | burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; | |
841 | dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; | |
842 | } else { | |
843 | burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; | |
844 | dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; | |
845 | } | |
846 | ||
a475f603 JP |
847 | netif_dbg(dev, ifup, dev->net, |
848 | "rx_urb_size=%ld\n", (ulong)dev->rx_urb_size); | |
2f7ca802 SG |
849 | |
850 | ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); | |
851 | if (ret < 0) { | |
60b86755 | 852 | netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); |
2f7ca802 SG |
853 | return ret; |
854 | } | |
855 | ||
856 | ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); | |
857 | if (ret < 0) { | |
60b86755 | 858 | netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); |
2f7ca802 SG |
859 | return ret; |
860 | } | |
a475f603 JP |
861 | netif_dbg(dev, ifup, dev->net, |
862 | "Read Value from BURST_CAP after writing: 0x%08x\n", | |
863 | read_buf); | |
2f7ca802 SG |
864 | |
865 | read_buf = DEFAULT_BULK_IN_DELAY; | |
866 | ret = smsc95xx_write_reg(dev, BULK_IN_DLY, read_buf); | |
867 | if (ret < 0) { | |
60b86755 | 868 | netdev_warn(dev->net, "ret = %d\n", ret); |
2f7ca802 SG |
869 | return ret; |
870 | } | |
871 | ||
872 | ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); | |
873 | if (ret < 0) { | |
60b86755 | 874 | netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); |
2f7ca802 SG |
875 | return ret; |
876 | } | |
a475f603 JP |
877 | netif_dbg(dev, ifup, dev->net, |
878 | "Read Value from BULK_IN_DLY after writing: 0x%08x\n", | |
879 | read_buf); | |
2f7ca802 SG |
880 | |
881 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); | |
882 | if (ret < 0) { | |
60b86755 | 883 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
2f7ca802 SG |
884 | return ret; |
885 | } | |
a475f603 JP |
886 | netif_dbg(dev, ifup, dev->net, |
887 | "Read Value from HW_CFG: 0x%08x\n", read_buf); | |
2f7ca802 SG |
888 | |
889 | if (turbo_mode) | |
890 | read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); | |
891 | ||
892 | read_buf &= ~HW_CFG_RXDOFF_; | |
893 | ||
894 | /* set Rx data offset=2, Make IP header aligns on word boundary. */ | |
895 | read_buf |= NET_IP_ALIGN << 9; | |
896 | ||
897 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); | |
898 | if (ret < 0) { | |
60b86755 JP |
899 | netdev_warn(dev->net, "Failed to write HW_CFG register, ret=%d\n", |
900 | ret); | |
2f7ca802 SG |
901 | return ret; |
902 | } | |
903 | ||
904 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); | |
905 | if (ret < 0) { | |
60b86755 | 906 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
2f7ca802 SG |
907 | return ret; |
908 | } | |
a475f603 JP |
909 | netif_dbg(dev, ifup, dev->net, |
910 | "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); | |
2f7ca802 SG |
911 | |
912 | write_buf = 0xFFFFFFFF; | |
913 | ret = smsc95xx_write_reg(dev, INT_STS, write_buf); | |
914 | if (ret < 0) { | |
60b86755 JP |
915 | netdev_warn(dev->net, "Failed to write INT_STS register, ret=%d\n", |
916 | ret); | |
2f7ca802 SG |
917 | return ret; |
918 | } | |
919 | ||
920 | ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); | |
921 | if (ret < 0) { | |
60b86755 | 922 | netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); |
2f7ca802 SG |
923 | return ret; |
924 | } | |
a475f603 | 925 | netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); |
2f7ca802 | 926 | |
f293501c SG |
927 | /* Configure GPIO pins as LED outputs */ |
928 | write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | | |
929 | LED_GPIO_CFG_FDX_LED; | |
930 | ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); | |
931 | if (ret < 0) { | |
60b86755 JP |
932 | netdev_warn(dev->net, "Failed to write LED_GPIO_CFG register, ret=%d\n", |
933 | ret); | |
f293501c SG |
934 | return ret; |
935 | } | |
936 | ||
2f7ca802 SG |
937 | /* Init Tx */ |
938 | write_buf = 0; | |
939 | ret = smsc95xx_write_reg(dev, FLOW, write_buf); | |
940 | if (ret < 0) { | |
60b86755 | 941 | netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); |
2f7ca802 SG |
942 | return ret; |
943 | } | |
944 | ||
945 | read_buf = AFC_CFG_DEFAULT; | |
946 | ret = smsc95xx_write_reg(dev, AFC_CFG, read_buf); | |
947 | if (ret < 0) { | |
60b86755 | 948 | netdev_warn(dev->net, "Failed to write AFC_CFG: %d\n", ret); |
2f7ca802 SG |
949 | return ret; |
950 | } | |
951 | ||
952 | /* Don't need mac_cr_lock during initialisation */ | |
953 | ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); | |
954 | if (ret < 0) { | |
60b86755 | 955 | netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); |
2f7ca802 SG |
956 | return ret; |
957 | } | |
958 | ||
959 | /* Init Rx */ | |
960 | /* Set Vlan */ | |
961 | write_buf = (u32)ETH_P_8021Q; | |
962 | ret = smsc95xx_write_reg(dev, VLAN1, write_buf); | |
963 | if (ret < 0) { | |
60b86755 | 964 | netdev_warn(dev->net, "Failed to write VAN1: %d\n", ret); |
2f7ca802 SG |
965 | return ret; |
966 | } | |
967 | ||
f7b29271 | 968 | /* Enable or disable checksum offload engines */ |
78e47fe4 | 969 | smsc95xx_set_features(dev->net, dev->net->features); |
2f7ca802 SG |
970 | |
971 | smsc95xx_set_multicast(dev->net); | |
972 | ||
973 | if (smsc95xx_phy_initialize(dev) < 0) | |
974 | return -EIO; | |
975 | ||
976 | ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); | |
977 | if (ret < 0) { | |
60b86755 | 978 | netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); |
2f7ca802 SG |
979 | return ret; |
980 | } | |
981 | ||
982 | /* enable PHY interrupts */ | |
983 | read_buf |= INT_EP_CTL_PHY_INT_; | |
984 | ||
985 | ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); | |
986 | if (ret < 0) { | |
60b86755 | 987 | netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); |
2f7ca802 SG |
988 | return ret; |
989 | } | |
990 | ||
991 | smsc95xx_start_tx_path(dev); | |
992 | smsc95xx_start_rx_path(dev); | |
993 | ||
a475f603 | 994 | netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); |
2f7ca802 SG |
995 | return 0; |
996 | } | |
997 | ||
63e77b39 SH |
998 | static const struct net_device_ops smsc95xx_netdev_ops = { |
999 | .ndo_open = usbnet_open, | |
1000 | .ndo_stop = usbnet_stop, | |
1001 | .ndo_start_xmit = usbnet_start_xmit, | |
1002 | .ndo_tx_timeout = usbnet_tx_timeout, | |
1003 | .ndo_change_mtu = usbnet_change_mtu, | |
1004 | .ndo_set_mac_address = eth_mac_addr, | |
1005 | .ndo_validate_addr = eth_validate_addr, | |
1006 | .ndo_do_ioctl = smsc95xx_ioctl, | |
afc4b13d | 1007 | .ndo_set_rx_mode = smsc95xx_set_multicast, |
78e47fe4 | 1008 | .ndo_set_features = smsc95xx_set_features, |
63e77b39 SH |
1009 | }; |
1010 | ||
2f7ca802 SG |
1011 | static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) |
1012 | { | |
1013 | struct smsc95xx_priv *pdata = NULL; | |
1014 | int ret; | |
1015 | ||
1016 | printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); | |
1017 | ||
1018 | ret = usbnet_get_endpoints(dev, intf); | |
1019 | if (ret < 0) { | |
60b86755 | 1020 | netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); |
2f7ca802 SG |
1021 | return ret; |
1022 | } | |
1023 | ||
1024 | dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), | |
1025 | GFP_KERNEL); | |
1026 | ||
1027 | pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
1028 | if (!pdata) { | |
60b86755 | 1029 | netdev_warn(dev->net, "Unable to allocate struct smsc95xx_priv\n"); |
2f7ca802 SG |
1030 | return -ENOMEM; |
1031 | } | |
1032 | ||
1033 | spin_lock_init(&pdata->mac_cr_lock); | |
1034 | ||
78e47fe4 MM |
1035 | if (DEFAULT_TX_CSUM_ENABLE) |
1036 | dev->net->features |= NETIF_F_HW_CSUM; | |
1037 | if (DEFAULT_RX_CSUM_ENABLE) | |
1038 | dev->net->features |= NETIF_F_RXCSUM; | |
1039 | ||
1040 | dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; | |
2f7ca802 | 1041 | |
f4e8ab7c BB |
1042 | smsc95xx_init_mac_address(dev); |
1043 | ||
2f7ca802 SG |
1044 | /* Init all registers */ |
1045 | ret = smsc95xx_reset(dev); | |
1046 | ||
63e77b39 | 1047 | dev->net->netdev_ops = &smsc95xx_netdev_ops; |
2f7ca802 | 1048 | dev->net->ethtool_ops = &smsc95xx_ethtool_ops; |
2f7ca802 | 1049 | dev->net->flags |= IFF_MULTICAST; |
78e47fe4 | 1050 | dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; |
9bbf5660 | 1051 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
2f7ca802 SG |
1052 | return 0; |
1053 | } | |
1054 | ||
1055 | static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) | |
1056 | { | |
1057 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); | |
1058 | if (pdata) { | |
a475f603 | 1059 | netif_dbg(dev, ifdown, dev->net, "free pdata\n"); |
2f7ca802 SG |
1060 | kfree(pdata); |
1061 | pdata = NULL; | |
1062 | dev->data[0] = 0; | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | static void smsc95xx_rx_csum_offload(struct sk_buff *skb) | |
1067 | { | |
1068 | skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); | |
1069 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1070 | skb_trim(skb, skb->len - 2); | |
1071 | } | |
1072 | ||
1073 | static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) | |
1074 | { | |
2f7ca802 SG |
1075 | while (skb->len > 0) { |
1076 | u32 header, align_count; | |
1077 | struct sk_buff *ax_skb; | |
1078 | unsigned char *packet; | |
1079 | u16 size; | |
1080 | ||
1081 | memcpy(&header, skb->data, sizeof(header)); | |
1082 | le32_to_cpus(&header); | |
1083 | skb_pull(skb, 4 + NET_IP_ALIGN); | |
1084 | packet = skb->data; | |
1085 | ||
1086 | /* get the packet length */ | |
1087 | size = (u16)((header & RX_STS_FL_) >> 16); | |
1088 | align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; | |
1089 | ||
1090 | if (unlikely(header & RX_STS_ES_)) { | |
a475f603 JP |
1091 | netif_dbg(dev, rx_err, dev->net, |
1092 | "Error header=0x%08x\n", header); | |
80667ac1 HX |
1093 | dev->net->stats.rx_errors++; |
1094 | dev->net->stats.rx_dropped++; | |
2f7ca802 SG |
1095 | |
1096 | if (header & RX_STS_CRC_) { | |
80667ac1 | 1097 | dev->net->stats.rx_crc_errors++; |
2f7ca802 SG |
1098 | } else { |
1099 | if (header & (RX_STS_TL_ | RX_STS_RF_)) | |
80667ac1 | 1100 | dev->net->stats.rx_frame_errors++; |
2f7ca802 SG |
1101 | |
1102 | if ((header & RX_STS_LE_) && | |
1103 | (!(header & RX_STS_FT_))) | |
80667ac1 | 1104 | dev->net->stats.rx_length_errors++; |
2f7ca802 SG |
1105 | } |
1106 | } else { | |
1107 | /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ | |
1108 | if (unlikely(size > (ETH_FRAME_LEN + 12))) { | |
a475f603 JP |
1109 | netif_dbg(dev, rx_err, dev->net, |
1110 | "size err header=0x%08x\n", header); | |
2f7ca802 SG |
1111 | return 0; |
1112 | } | |
1113 | ||
1114 | /* last frame in this batch */ | |
1115 | if (skb->len == size) { | |
78e47fe4 | 1116 | if (dev->net->features & NETIF_F_RXCSUM) |
2f7ca802 | 1117 | smsc95xx_rx_csum_offload(skb); |
df18acca | 1118 | skb_trim(skb, skb->len - 4); /* remove fcs */ |
2f7ca802 SG |
1119 | skb->truesize = size + sizeof(struct sk_buff); |
1120 | ||
1121 | return 1; | |
1122 | } | |
1123 | ||
1124 | ax_skb = skb_clone(skb, GFP_ATOMIC); | |
1125 | if (unlikely(!ax_skb)) { | |
60b86755 | 1126 | netdev_warn(dev->net, "Error allocating skb\n"); |
2f7ca802 SG |
1127 | return 0; |
1128 | } | |
1129 | ||
1130 | ax_skb->len = size; | |
1131 | ax_skb->data = packet; | |
1132 | skb_set_tail_pointer(ax_skb, size); | |
1133 | ||
78e47fe4 | 1134 | if (dev->net->features & NETIF_F_RXCSUM) |
2f7ca802 | 1135 | smsc95xx_rx_csum_offload(ax_skb); |
df18acca | 1136 | skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ |
2f7ca802 SG |
1137 | ax_skb->truesize = size + sizeof(struct sk_buff); |
1138 | ||
1139 | usbnet_skb_return(dev, ax_skb); | |
1140 | } | |
1141 | ||
1142 | skb_pull(skb, size); | |
1143 | ||
1144 | /* padding bytes before the next frame starts */ | |
1145 | if (skb->len) | |
1146 | skb_pull(skb, align_count); | |
1147 | } | |
1148 | ||
1149 | if (unlikely(skb->len < 0)) { | |
60b86755 | 1150 | netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); |
2f7ca802 SG |
1151 | return 0; |
1152 | } | |
1153 | ||
1154 | return 1; | |
1155 | } | |
1156 | ||
f7b29271 SG |
1157 | static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) |
1158 | { | |
55508d60 MM |
1159 | u16 low_16 = (u16)skb_checksum_start_offset(skb); |
1160 | u16 high_16 = low_16 + skb->csum_offset; | |
f7b29271 SG |
1161 | return (high_16 << 16) | low_16; |
1162 | } | |
1163 | ||
2f7ca802 SG |
1164 | static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, |
1165 | struct sk_buff *skb, gfp_t flags) | |
1166 | { | |
78e47fe4 | 1167 | bool csum = skb->ip_summed == CHECKSUM_PARTIAL; |
f7b29271 | 1168 | int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; |
2f7ca802 SG |
1169 | u32 tx_cmd_a, tx_cmd_b; |
1170 | ||
f7b29271 SG |
1171 | /* We do not advertise SG, so skbs should be already linearized */ |
1172 | BUG_ON(skb_shinfo(skb)->nr_frags); | |
1173 | ||
1174 | if (skb_headroom(skb) < overhead) { | |
2f7ca802 | 1175 | struct sk_buff *skb2 = skb_copy_expand(skb, |
f7b29271 | 1176 | overhead, 0, flags); |
2f7ca802 SG |
1177 | dev_kfree_skb_any(skb); |
1178 | skb = skb2; | |
1179 | if (!skb) | |
1180 | return NULL; | |
1181 | } | |
1182 | ||
f7b29271 | 1183 | if (csum) { |
11bc3088 SG |
1184 | if (skb->len <= 45) { |
1185 | /* workaround - hardware tx checksum does not work | |
1186 | * properly with extremely small packets */ | |
55508d60 | 1187 | long csstart = skb_checksum_start_offset(skb); |
11bc3088 SG |
1188 | __wsum calc = csum_partial(skb->data + csstart, |
1189 | skb->len - csstart, 0); | |
1190 | *((__sum16 *)(skb->data + csstart | |
1191 | + skb->csum_offset)) = csum_fold(calc); | |
1192 | ||
1193 | csum = false; | |
1194 | } else { | |
1195 | u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); | |
1196 | skb_push(skb, 4); | |
1197 | memcpy(skb->data, &csum_preamble, 4); | |
1198 | } | |
f7b29271 SG |
1199 | } |
1200 | ||
2f7ca802 SG |
1201 | skb_push(skb, 4); |
1202 | tx_cmd_b = (u32)(skb->len - 4); | |
f7b29271 SG |
1203 | if (csum) |
1204 | tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; | |
2f7ca802 SG |
1205 | cpu_to_le32s(&tx_cmd_b); |
1206 | memcpy(skb->data, &tx_cmd_b, 4); | |
1207 | ||
1208 | skb_push(skb, 4); | |
1209 | tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | | |
1210 | TX_CMD_A_LAST_SEG_; | |
1211 | cpu_to_le32s(&tx_cmd_a); | |
1212 | memcpy(skb->data, &tx_cmd_a, 4); | |
1213 | ||
1214 | return skb; | |
1215 | } | |
1216 | ||
1217 | static const struct driver_info smsc95xx_info = { | |
1218 | .description = "smsc95xx USB 2.0 Ethernet", | |
1219 | .bind = smsc95xx_bind, | |
1220 | .unbind = smsc95xx_unbind, | |
1221 | .link_reset = smsc95xx_link_reset, | |
1222 | .reset = smsc95xx_reset, | |
1223 | .rx_fixup = smsc95xx_rx_fixup, | |
1224 | .tx_fixup = smsc95xx_tx_fixup, | |
1225 | .status = smsc95xx_status, | |
07d69d42 | 1226 | .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, |
2f7ca802 SG |
1227 | }; |
1228 | ||
1229 | static const struct usb_device_id products[] = { | |
1230 | { | |
1231 | /* SMSC9500 USB Ethernet Device */ | |
1232 | USB_DEVICE(0x0424, 0x9500), | |
1233 | .driver_info = (unsigned long) &smsc95xx_info, | |
1234 | }, | |
6f41d12b SG |
1235 | { |
1236 | /* SMSC9505 USB Ethernet Device */ | |
1237 | USB_DEVICE(0x0424, 0x9505), | |
1238 | .driver_info = (unsigned long) &smsc95xx_info, | |
1239 | }, | |
1240 | { | |
1241 | /* SMSC9500A USB Ethernet Device */ | |
1242 | USB_DEVICE(0x0424, 0x9E00), | |
1243 | .driver_info = (unsigned long) &smsc95xx_info, | |
1244 | }, | |
1245 | { | |
1246 | /* SMSC9505A USB Ethernet Device */ | |
1247 | USB_DEVICE(0x0424, 0x9E01), | |
1248 | .driver_info = (unsigned long) &smsc95xx_info, | |
1249 | }, | |
726474b8 SG |
1250 | { |
1251 | /* SMSC9512/9514 USB Hub & Ethernet Device */ | |
1252 | USB_DEVICE(0x0424, 0xec00), | |
1253 | .driver_info = (unsigned long) &smsc95xx_info, | |
1254 | }, | |
6f41d12b SG |
1255 | { |
1256 | /* SMSC9500 USB Ethernet Device (SAL10) */ | |
1257 | USB_DEVICE(0x0424, 0x9900), | |
1258 | .driver_info = (unsigned long) &smsc95xx_info, | |
1259 | }, | |
1260 | { | |
1261 | /* SMSC9505 USB Ethernet Device (SAL10) */ | |
1262 | USB_DEVICE(0x0424, 0x9901), | |
1263 | .driver_info = (unsigned long) &smsc95xx_info, | |
1264 | }, | |
1265 | { | |
1266 | /* SMSC9500A USB Ethernet Device (SAL10) */ | |
1267 | USB_DEVICE(0x0424, 0x9902), | |
1268 | .driver_info = (unsigned long) &smsc95xx_info, | |
1269 | }, | |
1270 | { | |
1271 | /* SMSC9505A USB Ethernet Device (SAL10) */ | |
1272 | USB_DEVICE(0x0424, 0x9903), | |
1273 | .driver_info = (unsigned long) &smsc95xx_info, | |
1274 | }, | |
1275 | { | |
1276 | /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ | |
1277 | USB_DEVICE(0x0424, 0x9904), | |
1278 | .driver_info = (unsigned long) &smsc95xx_info, | |
1279 | }, | |
1280 | { | |
1281 | /* SMSC9500A USB Ethernet Device (HAL) */ | |
1282 | USB_DEVICE(0x0424, 0x9905), | |
1283 | .driver_info = (unsigned long) &smsc95xx_info, | |
1284 | }, | |
1285 | { | |
1286 | /* SMSC9505A USB Ethernet Device (HAL) */ | |
1287 | USB_DEVICE(0x0424, 0x9906), | |
1288 | .driver_info = (unsigned long) &smsc95xx_info, | |
1289 | }, | |
1290 | { | |
1291 | /* SMSC9500 USB Ethernet Device (Alternate ID) */ | |
1292 | USB_DEVICE(0x0424, 0x9907), | |
1293 | .driver_info = (unsigned long) &smsc95xx_info, | |
1294 | }, | |
1295 | { | |
1296 | /* SMSC9500A USB Ethernet Device (Alternate ID) */ | |
1297 | USB_DEVICE(0x0424, 0x9908), | |
1298 | .driver_info = (unsigned long) &smsc95xx_info, | |
1299 | }, | |
1300 | { | |
1301 | /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ | |
1302 | USB_DEVICE(0x0424, 0x9909), | |
1303 | .driver_info = (unsigned long) &smsc95xx_info, | |
1304 | }, | |
88edaa41 SG |
1305 | { |
1306 | /* SMSC LAN9530 USB Ethernet Device */ | |
1307 | USB_DEVICE(0x0424, 0x9530), | |
1308 | .driver_info = (unsigned long) &smsc95xx_info, | |
1309 | }, | |
1310 | { | |
1311 | /* SMSC LAN9730 USB Ethernet Device */ | |
1312 | USB_DEVICE(0x0424, 0x9730), | |
1313 | .driver_info = (unsigned long) &smsc95xx_info, | |
1314 | }, | |
1315 | { | |
1316 | /* SMSC LAN89530 USB Ethernet Device */ | |
1317 | USB_DEVICE(0x0424, 0x9E08), | |
1318 | .driver_info = (unsigned long) &smsc95xx_info, | |
1319 | }, | |
2f7ca802 SG |
1320 | { }, /* END */ |
1321 | }; | |
1322 | MODULE_DEVICE_TABLE(usb, products); | |
1323 | ||
1324 | static struct usb_driver smsc95xx_driver = { | |
1325 | .name = "smsc95xx", | |
1326 | .id_table = products, | |
1327 | .probe = usbnet_probe, | |
1328 | .suspend = usbnet_suspend, | |
1329 | .resume = usbnet_resume, | |
1330 | .disconnect = usbnet_disconnect, | |
e1f12eb6 | 1331 | .disable_hub_initiated_lpm = 1, |
2f7ca802 SG |
1332 | }; |
1333 | ||
d632eb1b | 1334 | module_usb_driver(smsc95xx_driver); |
2f7ca802 SG |
1335 | |
1336 | MODULE_AUTHOR("Nancy Lin"); | |
1337 | MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>"); | |
1338 | MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); | |
1339 | MODULE_LICENSE("GPL"); |