| 1 | /* |
| 2 | * ASIX AX8817X based USB 2.0 Ethernet Devices |
| 3 | * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com> |
| 4 | * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> |
| 5 | * Copyright (C) 2006 James Painter <jamie.painter@iname.com> |
| 6 | * Copyright (c) 2002-2003 TiVo Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 20 | */ |
| 21 | |
| 22 | #include "asix.h" |
| 23 | |
| 24 | int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
| 25 | u16 size, void *data) |
| 26 | { |
| 27 | int ret; |
| 28 | ret = usbnet_read_cmd(dev, cmd, |
| 29 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 30 | value, index, data, size); |
| 31 | |
| 32 | if (ret != size && ret >= 0) |
| 33 | return -EINVAL; |
| 34 | return ret; |
| 35 | } |
| 36 | |
| 37 | int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
| 38 | u16 size, void *data) |
| 39 | { |
| 40 | return usbnet_write_cmd(dev, cmd, |
| 41 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 42 | value, index, data, size); |
| 43 | } |
| 44 | |
| 45 | void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
| 46 | u16 size, void *data) |
| 47 | { |
| 48 | usbnet_write_cmd_async(dev, cmd, |
| 49 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 50 | value, index, data, size); |
| 51 | } |
| 52 | |
| 53 | int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb, |
| 54 | struct asix_rx_fixup_info *rx) |
| 55 | { |
| 56 | int offset = 0; |
| 57 | u16 size; |
| 58 | |
| 59 | /* When an Ethernet frame spans multiple URB socket buffers, |
| 60 | * do a sanity test for the Data header synchronisation. |
| 61 | * Attempt to detect the situation of the previous socket buffer having |
| 62 | * been truncated or a socket buffer was missing. These situations |
| 63 | * cause a discontinuity in the data stream and therefore need to avoid |
| 64 | * appending bad data to the end of the current netdev socket buffer. |
| 65 | * Also avoid unnecessarily discarding a good current netdev socket |
| 66 | * buffer. |
| 67 | */ |
| 68 | if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) { |
| 69 | offset = ((rx->remaining + 1) & 0xfffe); |
| 70 | rx->header = get_unaligned_le32(skb->data + offset); |
| 71 | offset = 0; |
| 72 | |
| 73 | size = (u16)(rx->header & 0x7ff); |
| 74 | if (size != ((~rx->header >> 16) & 0x7ff)) { |
| 75 | netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n", |
| 76 | rx->remaining); |
| 77 | if (rx->ax_skb) { |
| 78 | kfree_skb(rx->ax_skb); |
| 79 | rx->ax_skb = NULL; |
| 80 | /* Discard the incomplete netdev Ethernet frame |
| 81 | * and assume the Data header is at the start of |
| 82 | * the current URB socket buffer. |
| 83 | */ |
| 84 | } |
| 85 | rx->remaining = 0; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | while (offset + sizeof(u16) <= skb->len) { |
| 90 | u16 copy_length; |
| 91 | unsigned char *data; |
| 92 | |
| 93 | if (!rx->remaining) { |
| 94 | if (skb->len - offset == sizeof(u16)) { |
| 95 | rx->header = get_unaligned_le16( |
| 96 | skb->data + offset); |
| 97 | rx->split_head = true; |
| 98 | offset += sizeof(u16); |
| 99 | break; |
| 100 | } |
| 101 | |
| 102 | if (rx->split_head == true) { |
| 103 | rx->header |= (get_unaligned_le16( |
| 104 | skb->data + offset) << 16); |
| 105 | rx->split_head = false; |
| 106 | offset += sizeof(u16); |
| 107 | } else { |
| 108 | rx->header = get_unaligned_le32(skb->data + |
| 109 | offset); |
| 110 | offset += sizeof(u32); |
| 111 | } |
| 112 | |
| 113 | /* take frame length from Data header 32-bit word */ |
| 114 | size = (u16)(rx->header & 0x7ff); |
| 115 | if (size != ((~rx->header >> 16) & 0x7ff)) { |
| 116 | netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n", |
| 117 | rx->header, offset); |
| 118 | return 0; |
| 119 | } |
| 120 | if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) { |
| 121 | netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n", |
| 122 | size); |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | /* Sometimes may fail to get a netdev socket buffer but |
| 127 | * continue to process the URB socket buffer so that |
| 128 | * synchronisation of the Ethernet frame Data header |
| 129 | * word is maintained. |
| 130 | */ |
| 131 | rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size); |
| 132 | |
| 133 | rx->remaining = size; |
| 134 | } |
| 135 | |
| 136 | if (rx->remaining > skb->len - offset) { |
| 137 | copy_length = skb->len - offset; |
| 138 | rx->remaining -= copy_length; |
| 139 | } else { |
| 140 | copy_length = rx->remaining; |
| 141 | rx->remaining = 0; |
| 142 | } |
| 143 | |
| 144 | if (rx->ax_skb) { |
| 145 | data = skb_put(rx->ax_skb, copy_length); |
| 146 | memcpy(data, skb->data + offset, copy_length); |
| 147 | if (!rx->remaining) |
| 148 | usbnet_skb_return(dev, rx->ax_skb); |
| 149 | } |
| 150 | |
| 151 | offset += (copy_length + 1) & 0xfffe; |
| 152 | } |
| 153 | |
| 154 | if (skb->len != offset) { |
| 155 | netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n", |
| 156 | skb->len, offset); |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | return 1; |
| 161 | } |
| 162 | |
| 163 | int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb) |
| 164 | { |
| 165 | struct asix_common_private *dp = dev->driver_priv; |
| 166 | struct asix_rx_fixup_info *rx = &dp->rx_fixup_info; |
| 167 | |
| 168 | return asix_rx_fixup_internal(dev, skb, rx); |
| 169 | } |
| 170 | |
| 171 | struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, |
| 172 | gfp_t flags) |
| 173 | { |
| 174 | int padlen; |
| 175 | int headroom = skb_headroom(skb); |
| 176 | int tailroom = skb_tailroom(skb); |
| 177 | u32 packet_len; |
| 178 | u32 padbytes = 0xffff0000; |
| 179 | |
| 180 | padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4; |
| 181 | |
| 182 | /* We need to push 4 bytes in front of frame (packet_len) |
| 183 | * and maybe add 4 bytes after the end (if padlen is 4) |
| 184 | * |
| 185 | * Avoid skb_copy_expand() expensive call, using following rules : |
| 186 | * - We are allowed to push 4 bytes in headroom if skb_header_cloned() |
| 187 | * is false (and if we have 4 bytes of headroom) |
| 188 | * - We are allowed to put 4 bytes at tail if skb_cloned() |
| 189 | * is false (and if we have 4 bytes of tailroom) |
| 190 | * |
| 191 | * TCP packets for example are cloned, but skb_header_release() |
| 192 | * was called in tcp stack, allowing us to use headroom for our needs. |
| 193 | */ |
| 194 | if (!skb_header_cloned(skb) && |
| 195 | !(padlen && skb_cloned(skb)) && |
| 196 | headroom + tailroom >= 4 + padlen) { |
| 197 | /* following should not happen, but better be safe */ |
| 198 | if (headroom < 4 || |
| 199 | tailroom < padlen) { |
| 200 | skb->data = memmove(skb->head + 4, skb->data, skb->len); |
| 201 | skb_set_tail_pointer(skb, skb->len); |
| 202 | } |
| 203 | } else { |
| 204 | struct sk_buff *skb2; |
| 205 | |
| 206 | skb2 = skb_copy_expand(skb, 4, padlen, flags); |
| 207 | dev_kfree_skb_any(skb); |
| 208 | skb = skb2; |
| 209 | if (!skb) |
| 210 | return NULL; |
| 211 | } |
| 212 | |
| 213 | packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len; |
| 214 | skb_push(skb, 4); |
| 215 | cpu_to_le32s(&packet_len); |
| 216 | skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len)); |
| 217 | |
| 218 | if (padlen) { |
| 219 | cpu_to_le32s(&padbytes); |
| 220 | memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes)); |
| 221 | skb_put(skb, sizeof(padbytes)); |
| 222 | } |
| 223 | |
| 224 | usbnet_set_skb_tx_stats(skb, 1, 0); |
| 225 | return skb; |
| 226 | } |
| 227 | |
| 228 | int asix_set_sw_mii(struct usbnet *dev) |
| 229 | { |
| 230 | int ret; |
| 231 | ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL); |
| 232 | if (ret < 0) |
| 233 | netdev_err(dev->net, "Failed to enable software MII access\n"); |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | int asix_set_hw_mii(struct usbnet *dev) |
| 238 | { |
| 239 | int ret; |
| 240 | ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL); |
| 241 | if (ret < 0) |
| 242 | netdev_err(dev->net, "Failed to enable hardware MII access\n"); |
| 243 | return ret; |
| 244 | } |
| 245 | |
| 246 | int asix_read_phy_addr(struct usbnet *dev, int internal) |
| 247 | { |
| 248 | int offset = (internal ? 1 : 0); |
| 249 | u8 buf[2]; |
| 250 | int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf); |
| 251 | |
| 252 | netdev_dbg(dev->net, "asix_get_phy_addr()\n"); |
| 253 | |
| 254 | if (ret < 0) { |
| 255 | netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret); |
| 256 | goto out; |
| 257 | } |
| 258 | netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n", |
| 259 | *((__le16 *)buf)); |
| 260 | ret = buf[offset]; |
| 261 | |
| 262 | out: |
| 263 | return ret; |
| 264 | } |
| 265 | |
| 266 | int asix_get_phy_addr(struct usbnet *dev) |
| 267 | { |
| 268 | /* return the address of the internal phy */ |
| 269 | return asix_read_phy_addr(dev, 1); |
| 270 | } |
| 271 | |
| 272 | |
| 273 | int asix_sw_reset(struct usbnet *dev, u8 flags) |
| 274 | { |
| 275 | int ret; |
| 276 | |
| 277 | ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL); |
| 278 | if (ret < 0) |
| 279 | netdev_err(dev->net, "Failed to send software reset: %02x\n", ret); |
| 280 | |
| 281 | return ret; |
| 282 | } |
| 283 | |
| 284 | u16 asix_read_rx_ctl(struct usbnet *dev) |
| 285 | { |
| 286 | __le16 v; |
| 287 | int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v); |
| 288 | |
| 289 | if (ret < 0) { |
| 290 | netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret); |
| 291 | goto out; |
| 292 | } |
| 293 | ret = le16_to_cpu(v); |
| 294 | out: |
| 295 | return ret; |
| 296 | } |
| 297 | |
| 298 | int asix_write_rx_ctl(struct usbnet *dev, u16 mode) |
| 299 | { |
| 300 | int ret; |
| 301 | |
| 302 | netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode); |
| 303 | ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL); |
| 304 | if (ret < 0) |
| 305 | netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n", |
| 306 | mode, ret); |
| 307 | |
| 308 | return ret; |
| 309 | } |
| 310 | |
| 311 | u16 asix_read_medium_status(struct usbnet *dev) |
| 312 | { |
| 313 | __le16 v; |
| 314 | int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v); |
| 315 | |
| 316 | if (ret < 0) { |
| 317 | netdev_err(dev->net, "Error reading Medium Status register: %02x\n", |
| 318 | ret); |
| 319 | return ret; /* TODO: callers not checking for error ret */ |
| 320 | } |
| 321 | |
| 322 | return le16_to_cpu(v); |
| 323 | |
| 324 | } |
| 325 | |
| 326 | int asix_write_medium_mode(struct usbnet *dev, u16 mode) |
| 327 | { |
| 328 | int ret; |
| 329 | |
| 330 | netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode); |
| 331 | ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL); |
| 332 | if (ret < 0) |
| 333 | netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n", |
| 334 | mode, ret); |
| 335 | |
| 336 | return ret; |
| 337 | } |
| 338 | |
| 339 | int asix_write_gpio(struct usbnet *dev, u16 value, int sleep) |
| 340 | { |
| 341 | int ret; |
| 342 | |
| 343 | netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value); |
| 344 | ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL); |
| 345 | if (ret < 0) |
| 346 | netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n", |
| 347 | value, ret); |
| 348 | |
| 349 | if (sleep) |
| 350 | msleep(sleep); |
| 351 | |
| 352 | return ret; |
| 353 | } |
| 354 | |
| 355 | /* |
| 356 | * AX88772 & AX88178 have a 16-bit RX_CTL value |
| 357 | */ |
| 358 | void asix_set_multicast(struct net_device *net) |
| 359 | { |
| 360 | struct usbnet *dev = netdev_priv(net); |
| 361 | struct asix_data *data = (struct asix_data *)&dev->data; |
| 362 | u16 rx_ctl = AX_DEFAULT_RX_CTL; |
| 363 | |
| 364 | if (net->flags & IFF_PROMISC) { |
| 365 | rx_ctl |= AX_RX_CTL_PRO; |
| 366 | } else if (net->flags & IFF_ALLMULTI || |
| 367 | netdev_mc_count(net) > AX_MAX_MCAST) { |
| 368 | rx_ctl |= AX_RX_CTL_AMALL; |
| 369 | } else if (netdev_mc_empty(net)) { |
| 370 | /* just broadcast and directed */ |
| 371 | } else { |
| 372 | /* We use the 20 byte dev->data |
| 373 | * for our 8 byte filter buffer |
| 374 | * to avoid allocating memory that |
| 375 | * is tricky to free later */ |
| 376 | struct netdev_hw_addr *ha; |
| 377 | u32 crc_bits; |
| 378 | |
| 379 | memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); |
| 380 | |
| 381 | /* Build the multicast hash filter. */ |
| 382 | netdev_for_each_mc_addr(ha, net) { |
| 383 | crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; |
| 384 | data->multi_filter[crc_bits >> 3] |= |
| 385 | 1 << (crc_bits & 7); |
| 386 | } |
| 387 | |
| 388 | asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0, |
| 389 | AX_MCAST_FILTER_SIZE, data->multi_filter); |
| 390 | |
| 391 | rx_ctl |= AX_RX_CTL_AM; |
| 392 | } |
| 393 | |
| 394 | asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL); |
| 395 | } |
| 396 | |
| 397 | int asix_mdio_read(struct net_device *netdev, int phy_id, int loc) |
| 398 | { |
| 399 | struct usbnet *dev = netdev_priv(netdev); |
| 400 | __le16 res; |
| 401 | |
| 402 | mutex_lock(&dev->phy_mutex); |
| 403 | asix_set_sw_mii(dev); |
| 404 | asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, |
| 405 | (__u16)loc, 2, &res); |
| 406 | asix_set_hw_mii(dev); |
| 407 | mutex_unlock(&dev->phy_mutex); |
| 408 | |
| 409 | netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", |
| 410 | phy_id, loc, le16_to_cpu(res)); |
| 411 | |
| 412 | return le16_to_cpu(res); |
| 413 | } |
| 414 | |
| 415 | void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val) |
| 416 | { |
| 417 | struct usbnet *dev = netdev_priv(netdev); |
| 418 | __le16 res = cpu_to_le16(val); |
| 419 | |
| 420 | netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", |
| 421 | phy_id, loc, val); |
| 422 | mutex_lock(&dev->phy_mutex); |
| 423 | asix_set_sw_mii(dev); |
| 424 | asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res); |
| 425 | asix_set_hw_mii(dev); |
| 426 | mutex_unlock(&dev->phy_mutex); |
| 427 | } |
| 428 | |
| 429 | void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) |
| 430 | { |
| 431 | struct usbnet *dev = netdev_priv(net); |
| 432 | u8 opt; |
| 433 | |
| 434 | if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) { |
| 435 | wolinfo->supported = 0; |
| 436 | wolinfo->wolopts = 0; |
| 437 | return; |
| 438 | } |
| 439 | wolinfo->supported = WAKE_PHY | WAKE_MAGIC; |
| 440 | wolinfo->wolopts = 0; |
| 441 | if (opt & AX_MONITOR_LINK) |
| 442 | wolinfo->wolopts |= WAKE_PHY; |
| 443 | if (opt & AX_MONITOR_MAGIC) |
| 444 | wolinfo->wolopts |= WAKE_MAGIC; |
| 445 | } |
| 446 | |
| 447 | int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) |
| 448 | { |
| 449 | struct usbnet *dev = netdev_priv(net); |
| 450 | u8 opt = 0; |
| 451 | |
| 452 | if (wolinfo->wolopts & WAKE_PHY) |
| 453 | opt |= AX_MONITOR_LINK; |
| 454 | if (wolinfo->wolopts & WAKE_MAGIC) |
| 455 | opt |= AX_MONITOR_MAGIC; |
| 456 | |
| 457 | if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE, |
| 458 | opt, 0, 0, NULL) < 0) |
| 459 | return -EINVAL; |
| 460 | |
| 461 | return 0; |
| 462 | } |
| 463 | |
| 464 | int asix_get_eeprom_len(struct net_device *net) |
| 465 | { |
| 466 | return AX_EEPROM_LEN; |
| 467 | } |
| 468 | |
| 469 | int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, |
| 470 | u8 *data) |
| 471 | { |
| 472 | struct usbnet *dev = netdev_priv(net); |
| 473 | u16 *eeprom_buff; |
| 474 | int first_word, last_word; |
| 475 | int i; |
| 476 | |
| 477 | if (eeprom->len == 0) |
| 478 | return -EINVAL; |
| 479 | |
| 480 | eeprom->magic = AX_EEPROM_MAGIC; |
| 481 | |
| 482 | first_word = eeprom->offset >> 1; |
| 483 | last_word = (eeprom->offset + eeprom->len - 1) >> 1; |
| 484 | |
| 485 | eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), |
| 486 | GFP_KERNEL); |
| 487 | if (!eeprom_buff) |
| 488 | return -ENOMEM; |
| 489 | |
| 490 | /* ax8817x returns 2 bytes from eeprom on read */ |
| 491 | for (i = first_word; i <= last_word; i++) { |
| 492 | if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2, |
| 493 | &(eeprom_buff[i - first_word])) < 0) { |
| 494 | kfree(eeprom_buff); |
| 495 | return -EIO; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len); |
| 500 | kfree(eeprom_buff); |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, |
| 505 | u8 *data) |
| 506 | { |
| 507 | struct usbnet *dev = netdev_priv(net); |
| 508 | u16 *eeprom_buff; |
| 509 | int first_word, last_word; |
| 510 | int i; |
| 511 | int ret; |
| 512 | |
| 513 | netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n", |
| 514 | eeprom->len, eeprom->offset, eeprom->magic); |
| 515 | |
| 516 | if (eeprom->len == 0) |
| 517 | return -EINVAL; |
| 518 | |
| 519 | if (eeprom->magic != AX_EEPROM_MAGIC) |
| 520 | return -EINVAL; |
| 521 | |
| 522 | first_word = eeprom->offset >> 1; |
| 523 | last_word = (eeprom->offset + eeprom->len - 1) >> 1; |
| 524 | |
| 525 | eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), |
| 526 | GFP_KERNEL); |
| 527 | if (!eeprom_buff) |
| 528 | return -ENOMEM; |
| 529 | |
| 530 | /* align data to 16 bit boundaries, read the missing data from |
| 531 | the EEPROM */ |
| 532 | if (eeprom->offset & 1) { |
| 533 | ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2, |
| 534 | &(eeprom_buff[0])); |
| 535 | if (ret < 0) { |
| 536 | netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word); |
| 537 | goto free; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | if ((eeprom->offset + eeprom->len) & 1) { |
| 542 | ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2, |
| 543 | &(eeprom_buff[last_word - first_word])); |
| 544 | if (ret < 0) { |
| 545 | netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word); |
| 546 | goto free; |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len); |
| 551 | |
| 552 | /* write data to EEPROM */ |
| 553 | ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL); |
| 554 | if (ret < 0) { |
| 555 | netdev_err(net, "Failed to enable EEPROM write\n"); |
| 556 | goto free; |
| 557 | } |
| 558 | msleep(20); |
| 559 | |
| 560 | for (i = first_word; i <= last_word; i++) { |
| 561 | netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n", |
| 562 | i, eeprom_buff[i - first_word]); |
| 563 | ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i, |
| 564 | eeprom_buff[i - first_word], 0, NULL); |
| 565 | if (ret < 0) { |
| 566 | netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", |
| 567 | i); |
| 568 | goto free; |
| 569 | } |
| 570 | msleep(20); |
| 571 | } |
| 572 | |
| 573 | ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL); |
| 574 | if (ret < 0) { |
| 575 | netdev_err(net, "Failed to disable EEPROM write\n"); |
| 576 | goto free; |
| 577 | } |
| 578 | |
| 579 | ret = 0; |
| 580 | free: |
| 581 | kfree(eeprom_buff); |
| 582 | return ret; |
| 583 | } |
| 584 | |
| 585 | void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) |
| 586 | { |
| 587 | /* Inherit standard device info */ |
| 588 | usbnet_get_drvinfo(net, info); |
| 589 | strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
| 590 | strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); |
| 591 | } |
| 592 | |
| 593 | int asix_set_mac_address(struct net_device *net, void *p) |
| 594 | { |
| 595 | struct usbnet *dev = netdev_priv(net); |
| 596 | struct asix_data *data = (struct asix_data *)&dev->data; |
| 597 | struct sockaddr *addr = p; |
| 598 | |
| 599 | if (netif_running(net)) |
| 600 | return -EBUSY; |
| 601 | if (!is_valid_ether_addr(addr->sa_data)) |
| 602 | return -EADDRNOTAVAIL; |
| 603 | |
| 604 | memcpy(net->dev_addr, addr->sa_data, ETH_ALEN); |
| 605 | |
| 606 | /* We use the 20 byte dev->data |
| 607 | * for our 6 byte mac buffer |
| 608 | * to avoid allocating memory that |
| 609 | * is tricky to free later */ |
| 610 | memcpy(data->mac_addr, addr->sa_data, ETH_ALEN); |
| 611 | asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN, |
| 612 | data->mac_addr); |
| 613 | |
| 614 | return 0; |
| 615 | } |