Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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> |
| 31 | #include "smsc95xx.h" |
| 32 | |
| 33 | #define SMSC_CHIPNAME "smsc95xx" |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 34 | #define SMSC_DRIVER_VERSION "1.0.4" |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 35 | #define HS_USB_PKT_SIZE (512) |
| 36 | #define FS_USB_PKT_SIZE (64) |
| 37 | #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) |
| 38 | #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) |
| 39 | #define DEFAULT_BULK_IN_DELAY (0x00002000) |
| 40 | #define MAX_SINGLE_PACKET_SIZE (2048) |
| 41 | #define LAN95XX_EEPROM_MAGIC (0x9500) |
| 42 | #define EEPROM_MAC_OFFSET (0x01) |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 43 | #define DEFAULT_TX_CSUM_ENABLE (true) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 44 | #define DEFAULT_RX_CSUM_ENABLE (true) |
| 45 | #define SMSC95XX_INTERNAL_PHY_ID (1) |
| 46 | #define SMSC95XX_TX_OVERHEAD (8) |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 47 | #define SMSC95XX_TX_OVERHEAD_CSUM (12) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 48 | |
| 49 | struct smsc95xx_priv { |
| 50 | u32 mac_cr; |
| 51 | spinlock_t mac_cr_lock; |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 52 | bool use_tx_csum; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 53 | bool use_rx_csum; |
| 54 | }; |
| 55 | |
| 56 | struct usb_context { |
| 57 | struct usb_ctrlrequest req; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 58 | struct usbnet *dev; |
| 59 | }; |
| 60 | |
Hannes Eder | 0227abc | 2009-02-14 11:47:47 +0000 | [diff] [blame] | 61 | static int turbo_mode = true; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 62 | module_param(turbo_mode, bool, 0644); |
| 63 | MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); |
| 64 | |
| 65 | static int smsc95xx_read_reg(struct usbnet *dev, u32 index, u32 *data) |
| 66 | { |
| 67 | u32 *buf = kmalloc(4, GFP_KERNEL); |
| 68 | int ret; |
| 69 | |
| 70 | BUG_ON(!dev); |
| 71 | |
| 72 | if (!buf) |
| 73 | return -ENOMEM; |
| 74 | |
| 75 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), |
| 76 | USB_VENDOR_REQUEST_READ_REGISTER, |
| 77 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 78 | 00, index, buf, 4, USB_CTRL_GET_TIMEOUT); |
| 79 | |
| 80 | if (unlikely(ret < 0)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 81 | netdev_warn(dev->net, "Failed to read register index 0x%08x\n", index); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 82 | |
| 83 | le32_to_cpus(buf); |
| 84 | *data = *buf; |
| 85 | kfree(buf); |
| 86 | |
| 87 | return ret; |
| 88 | } |
| 89 | |
| 90 | static int smsc95xx_write_reg(struct usbnet *dev, u32 index, u32 data) |
| 91 | { |
| 92 | u32 *buf = kmalloc(4, GFP_KERNEL); |
| 93 | int ret; |
| 94 | |
| 95 | BUG_ON(!dev); |
| 96 | |
| 97 | if (!buf) |
| 98 | return -ENOMEM; |
| 99 | |
| 100 | *buf = data; |
| 101 | cpu_to_le32s(buf); |
| 102 | |
| 103 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| 104 | USB_VENDOR_REQUEST_WRITE_REGISTER, |
| 105 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 106 | 00, index, buf, 4, USB_CTRL_SET_TIMEOUT); |
| 107 | |
| 108 | if (unlikely(ret < 0)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 109 | netdev_warn(dev->net, "Failed to write register index 0x%08x\n", index); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 110 | |
| 111 | kfree(buf); |
| 112 | |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | /* Loop until the read is completed with timeout |
| 117 | * called with phy_mutex held */ |
| 118 | static int smsc95xx_phy_wait_not_busy(struct usbnet *dev) |
| 119 | { |
| 120 | unsigned long start_time = jiffies; |
| 121 | u32 val; |
| 122 | |
| 123 | do { |
| 124 | smsc95xx_read_reg(dev, MII_ADDR, &val); |
| 125 | if (!(val & MII_BUSY_)) |
| 126 | return 0; |
| 127 | } while (!time_after(jiffies, start_time + HZ)); |
| 128 | |
| 129 | return -EIO; |
| 130 | } |
| 131 | |
| 132 | static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) |
| 133 | { |
| 134 | struct usbnet *dev = netdev_priv(netdev); |
| 135 | u32 val, addr; |
| 136 | |
| 137 | mutex_lock(&dev->phy_mutex); |
| 138 | |
| 139 | /* confirm MII not busy */ |
| 140 | if (smsc95xx_phy_wait_not_busy(dev)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 141 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 142 | mutex_unlock(&dev->phy_mutex); |
| 143 | return -EIO; |
| 144 | } |
| 145 | |
| 146 | /* set the address, index & direction (read from PHY) */ |
| 147 | phy_id &= dev->mii.phy_id_mask; |
| 148 | idx &= dev->mii.reg_num_mask; |
| 149 | addr = (phy_id << 11) | (idx << 6) | MII_READ_; |
| 150 | smsc95xx_write_reg(dev, MII_ADDR, addr); |
| 151 | |
| 152 | if (smsc95xx_phy_wait_not_busy(dev)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 153 | netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 154 | mutex_unlock(&dev->phy_mutex); |
| 155 | return -EIO; |
| 156 | } |
| 157 | |
| 158 | smsc95xx_read_reg(dev, MII_DATA, &val); |
| 159 | |
| 160 | mutex_unlock(&dev->phy_mutex); |
| 161 | |
| 162 | return (u16)(val & 0xFFFF); |
| 163 | } |
| 164 | |
| 165 | static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, |
| 166 | int regval) |
| 167 | { |
| 168 | struct usbnet *dev = netdev_priv(netdev); |
| 169 | u32 val, addr; |
| 170 | |
| 171 | mutex_lock(&dev->phy_mutex); |
| 172 | |
| 173 | /* confirm MII not busy */ |
| 174 | if (smsc95xx_phy_wait_not_busy(dev)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 175 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 176 | mutex_unlock(&dev->phy_mutex); |
| 177 | return; |
| 178 | } |
| 179 | |
| 180 | val = regval; |
| 181 | smsc95xx_write_reg(dev, MII_DATA, val); |
| 182 | |
| 183 | /* set the address, index & direction (write to PHY) */ |
| 184 | phy_id &= dev->mii.phy_id_mask; |
| 185 | idx &= dev->mii.reg_num_mask; |
| 186 | addr = (phy_id << 11) | (idx << 6) | MII_WRITE_; |
| 187 | smsc95xx_write_reg(dev, MII_ADDR, addr); |
| 188 | |
| 189 | if (smsc95xx_phy_wait_not_busy(dev)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 190 | netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 191 | |
| 192 | mutex_unlock(&dev->phy_mutex); |
| 193 | } |
| 194 | |
| 195 | static int smsc95xx_wait_eeprom(struct usbnet *dev) |
| 196 | { |
| 197 | unsigned long start_time = jiffies; |
| 198 | u32 val; |
| 199 | |
| 200 | do { |
| 201 | smsc95xx_read_reg(dev, E2P_CMD, &val); |
| 202 | if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) |
| 203 | break; |
| 204 | udelay(40); |
| 205 | } while (!time_after(jiffies, start_time + HZ)); |
| 206 | |
| 207 | if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 208 | netdev_warn(dev->net, "EEPROM read operation timeout\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 209 | return -EIO; |
| 210 | } |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | static int smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) |
| 216 | { |
| 217 | unsigned long start_time = jiffies; |
| 218 | u32 val; |
| 219 | |
| 220 | do { |
| 221 | smsc95xx_read_reg(dev, E2P_CMD, &val); |
| 222 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 223 | if (!(val & E2P_CMD_BUSY_)) |
| 224 | return 0; |
| 225 | |
| 226 | udelay(40); |
| 227 | } while (!time_after(jiffies, start_time + HZ)); |
| 228 | |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 229 | netdev_warn(dev->net, "EEPROM is busy\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 230 | return -EIO; |
| 231 | } |
| 232 | |
| 233 | static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, |
| 234 | u8 *data) |
| 235 | { |
| 236 | u32 val; |
| 237 | int i, ret; |
| 238 | |
| 239 | BUG_ON(!dev); |
| 240 | BUG_ON(!data); |
| 241 | |
| 242 | ret = smsc95xx_eeprom_confirm_not_busy(dev); |
| 243 | if (ret) |
| 244 | return ret; |
| 245 | |
| 246 | for (i = 0; i < length; i++) { |
| 247 | val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); |
| 248 | smsc95xx_write_reg(dev, E2P_CMD, val); |
| 249 | |
| 250 | ret = smsc95xx_wait_eeprom(dev); |
| 251 | if (ret < 0) |
| 252 | return ret; |
| 253 | |
| 254 | smsc95xx_read_reg(dev, E2P_DATA, &val); |
| 255 | |
| 256 | data[i] = val & 0xFF; |
| 257 | offset++; |
| 258 | } |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, |
| 264 | u8 *data) |
| 265 | { |
| 266 | u32 val; |
| 267 | int i, ret; |
| 268 | |
| 269 | BUG_ON(!dev); |
| 270 | BUG_ON(!data); |
| 271 | |
| 272 | ret = smsc95xx_eeprom_confirm_not_busy(dev); |
| 273 | if (ret) |
| 274 | return ret; |
| 275 | |
| 276 | /* Issue write/erase enable command */ |
| 277 | val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; |
| 278 | smsc95xx_write_reg(dev, E2P_CMD, val); |
| 279 | |
| 280 | ret = smsc95xx_wait_eeprom(dev); |
| 281 | if (ret < 0) |
| 282 | return ret; |
| 283 | |
| 284 | for (i = 0; i < length; i++) { |
| 285 | |
| 286 | /* Fill data register */ |
| 287 | val = data[i]; |
| 288 | smsc95xx_write_reg(dev, E2P_DATA, val); |
| 289 | |
| 290 | /* Send "write" command */ |
| 291 | val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); |
| 292 | smsc95xx_write_reg(dev, E2P_CMD, val); |
| 293 | |
| 294 | ret = smsc95xx_wait_eeprom(dev); |
| 295 | if (ret < 0) |
| 296 | return ret; |
| 297 | |
| 298 | offset++; |
| 299 | } |
| 300 | |
| 301 | return 0; |
| 302 | } |
| 303 | |
Steve Glendinning | 150a7fc | 2009-01-25 17:54:46 -0800 | [diff] [blame] | 304 | static void smsc95xx_async_cmd_callback(struct urb *urb) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 305 | { |
| 306 | struct usb_context *usb_context = urb->context; |
| 307 | struct usbnet *dev = usb_context->dev; |
Oliver Neukum | c94cb31 | 2008-12-18 23:00:59 -0800 | [diff] [blame] | 308 | int status = urb->status; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 309 | |
Oliver Neukum | c94cb31 | 2008-12-18 23:00:59 -0800 | [diff] [blame] | 310 | if (status < 0) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 311 | netdev_warn(dev->net, "async callback failed with %d\n", status); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 312 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 313 | kfree(usb_context); |
| 314 | usb_free_urb(urb); |
| 315 | } |
| 316 | |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 317 | static int smsc95xx_write_reg_async(struct usbnet *dev, u16 index, u32 *data) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 318 | { |
| 319 | struct usb_context *usb_context; |
| 320 | int status; |
| 321 | struct urb *urb; |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 322 | const u16 size = 4; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 323 | |
| 324 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 325 | if (!urb) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 326 | netdev_warn(dev->net, "Error allocating URB\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 327 | return -ENOMEM; |
| 328 | } |
| 329 | |
| 330 | usb_context = kmalloc(sizeof(struct usb_context), GFP_ATOMIC); |
| 331 | if (usb_context == NULL) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 332 | netdev_warn(dev->net, "Error allocating control msg\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 333 | usb_free_urb(urb); |
| 334 | return -ENOMEM; |
| 335 | } |
| 336 | |
| 337 | usb_context->req.bRequestType = |
| 338 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; |
| 339 | usb_context->req.bRequest = USB_VENDOR_REQUEST_WRITE_REGISTER; |
| 340 | usb_context->req.wValue = 00; |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 341 | usb_context->req.wIndex = cpu_to_le16(index); |
| 342 | usb_context->req.wLength = cpu_to_le16(size); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 343 | |
| 344 | usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| 345 | (void *)&usb_context->req, data, size, |
Steve Glendinning | 150a7fc | 2009-01-25 17:54:46 -0800 | [diff] [blame] | 346 | smsc95xx_async_cmd_callback, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 347 | (void *)usb_context); |
| 348 | |
| 349 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 350 | if (status < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 351 | netdev_warn(dev->net, "Error submitting control msg, sts=%d\n", |
| 352 | status); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 353 | kfree(usb_context); |
| 354 | usb_free_urb(urb); |
| 355 | } |
| 356 | |
| 357 | return status; |
| 358 | } |
| 359 | |
| 360 | /* returns hash bit number for given MAC address |
| 361 | * example: |
| 362 | * 01 00 5E 00 00 01 -> returns bit number 31 */ |
| 363 | static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) |
| 364 | { |
| 365 | return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; |
| 366 | } |
| 367 | |
| 368 | static void smsc95xx_set_multicast(struct net_device *netdev) |
| 369 | { |
| 370 | struct usbnet *dev = netdev_priv(netdev); |
| 371 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 372 | u32 hash_hi = 0; |
| 373 | u32 hash_lo = 0; |
| 374 | unsigned long flags; |
| 375 | |
| 376 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 377 | |
| 378 | if (dev->net->flags & IFF_PROMISC) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 379 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 380 | pdata->mac_cr |= MAC_CR_PRMS_; |
| 381 | pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| 382 | } else if (dev->net->flags & IFF_ALLMULTI) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 383 | netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 384 | pdata->mac_cr |= MAC_CR_MCPAS_; |
| 385 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 386 | } else if (!netdev_mc_empty(dev->net)) { |
Jiri Pirko | a92635d | 2010-02-18 04:02:26 +0000 | [diff] [blame] | 387 | struct dev_mc_list *mc_list; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 388 | |
| 389 | pdata->mac_cr |= MAC_CR_HPFILT_; |
| 390 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); |
| 391 | |
Jiri Pirko | a92635d | 2010-02-18 04:02:26 +0000 | [diff] [blame] | 392 | netdev_for_each_mc_addr(mc_list, netdev) { |
| 393 | u32 bitnum = smsc95xx_hash(mc_list->dmi_addr); |
| 394 | u32 mask = 0x01 << (bitnum & 0x1F); |
| 395 | if (bitnum & 0x20) |
| 396 | hash_hi |= mask; |
| 397 | else |
| 398 | hash_lo |= mask; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 399 | } |
| 400 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 401 | netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 402 | hash_hi, hash_lo); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 403 | } else { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 404 | netif_dbg(dev, drv, dev->net, "receive own packets only\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 405 | pdata->mac_cr &= |
| 406 | ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| 407 | } |
| 408 | |
| 409 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 410 | |
| 411 | /* Initiate async writes, as we can't wait for completion here */ |
| 412 | smsc95xx_write_reg_async(dev, HASHH, &hash_hi); |
| 413 | smsc95xx_write_reg_async(dev, HASHL, &hash_lo); |
| 414 | smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr); |
| 415 | } |
| 416 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 417 | static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, |
| 418 | u16 lcladv, u16 rmtadv) |
| 419 | { |
| 420 | u32 flow, afc_cfg = 0; |
| 421 | |
| 422 | int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); |
| 423 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 424 | netdev_warn(dev->net, "error reading AFC_CFG\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 425 | return; |
| 426 | } |
| 427 | |
| 428 | if (duplex == DUPLEX_FULL) { |
Steve Glendinning | bc02ff9 | 2008-12-16 02:00:48 -0800 | [diff] [blame] | 429 | u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 430 | |
| 431 | if (cap & FLOW_CTRL_RX) |
| 432 | flow = 0xFFFF0002; |
| 433 | else |
| 434 | flow = 0; |
| 435 | |
| 436 | if (cap & FLOW_CTRL_TX) |
| 437 | afc_cfg |= 0xF; |
| 438 | else |
| 439 | afc_cfg &= ~0xF; |
| 440 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 441 | netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 442 | cap & FLOW_CTRL_RX ? "enabled" : "disabled", |
| 443 | cap & FLOW_CTRL_TX ? "enabled" : "disabled"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 444 | } else { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 445 | netif_dbg(dev, link, dev->net, "half duplex\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 446 | flow = 0; |
| 447 | afc_cfg |= 0xF; |
| 448 | } |
| 449 | |
| 450 | smsc95xx_write_reg(dev, FLOW, flow); |
| 451 | smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); |
| 452 | } |
| 453 | |
| 454 | static int smsc95xx_link_reset(struct usbnet *dev) |
| 455 | { |
| 456 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 457 | struct mii_if_info *mii = &dev->mii; |
| 458 | struct ethtool_cmd ecmd; |
| 459 | unsigned long flags; |
| 460 | u16 lcladv, rmtadv; |
| 461 | u32 intdata; |
| 462 | |
| 463 | /* clear interrupt status */ |
| 464 | smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); |
| 465 | intdata = 0xFFFFFFFF; |
| 466 | smsc95xx_write_reg(dev, INT_STS, intdata); |
| 467 | |
| 468 | mii_check_media(mii, 1, 1); |
| 469 | mii_ethtool_gset(&dev->mii, &ecmd); |
| 470 | lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); |
| 471 | rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); |
| 472 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 473 | netif_dbg(dev, link, dev->net, "speed: %d duplex: %d lcladv: %04x rmtadv: %04x\n", |
| 474 | ecmd.speed, ecmd.duplex, lcladv, rmtadv); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 475 | |
| 476 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 477 | if (ecmd.duplex != DUPLEX_FULL) { |
| 478 | pdata->mac_cr &= ~MAC_CR_FDPX_; |
| 479 | pdata->mac_cr |= MAC_CR_RCVOWN_; |
| 480 | } else { |
| 481 | pdata->mac_cr &= ~MAC_CR_RCVOWN_; |
| 482 | pdata->mac_cr |= MAC_CR_FDPX_; |
| 483 | } |
| 484 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 485 | |
| 486 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| 487 | |
| 488 | smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); |
| 489 | |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | static void smsc95xx_status(struct usbnet *dev, struct urb *urb) |
| 494 | { |
| 495 | u32 intdata; |
| 496 | |
| 497 | if (urb->actual_length != 4) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 498 | netdev_warn(dev->net, "unexpected urb length %d\n", |
| 499 | urb->actual_length); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 500 | return; |
| 501 | } |
| 502 | |
| 503 | memcpy(&intdata, urb->transfer_buffer, 4); |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 504 | le32_to_cpus(&intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 505 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 506 | netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 507 | |
| 508 | if (intdata & INT_ENP_PHY_INT_) |
| 509 | usbnet_defer_kevent(dev, EVENT_LINK_RESET); |
| 510 | else |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 511 | netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", |
| 512 | intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 513 | } |
| 514 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 515 | /* Enable or disable Tx & Rx checksum offload engines */ |
| 516 | static int smsc95xx_set_csums(struct usbnet *dev) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 517 | { |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 518 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 519 | u32 read_buf; |
| 520 | int ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); |
| 521 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 522 | netdev_warn(dev->net, "Failed to read COE_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 523 | return ret; |
| 524 | } |
| 525 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 526 | if (pdata->use_tx_csum) |
| 527 | read_buf |= Tx_COE_EN_; |
| 528 | else |
| 529 | read_buf &= ~Tx_COE_EN_; |
| 530 | |
| 531 | if (pdata->use_rx_csum) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 532 | read_buf |= Rx_COE_EN_; |
| 533 | else |
| 534 | read_buf &= ~Rx_COE_EN_; |
| 535 | |
| 536 | ret = smsc95xx_write_reg(dev, COE_CR, read_buf); |
| 537 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 538 | netdev_warn(dev->net, "Failed to write COE_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 539 | return ret; |
| 540 | } |
| 541 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 542 | netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) |
| 547 | { |
| 548 | return MAX_EEPROM_SIZE; |
| 549 | } |
| 550 | |
| 551 | static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, |
| 552 | struct ethtool_eeprom *ee, u8 *data) |
| 553 | { |
| 554 | struct usbnet *dev = netdev_priv(netdev); |
| 555 | |
| 556 | ee->magic = LAN95XX_EEPROM_MAGIC; |
| 557 | |
| 558 | return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); |
| 559 | } |
| 560 | |
| 561 | static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, |
| 562 | struct ethtool_eeprom *ee, u8 *data) |
| 563 | { |
| 564 | struct usbnet *dev = netdev_priv(netdev); |
| 565 | |
| 566 | if (ee->magic != LAN95XX_EEPROM_MAGIC) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 567 | netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", |
| 568 | ee->magic); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 569 | return -EINVAL; |
| 570 | } |
| 571 | |
| 572 | return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); |
| 573 | } |
| 574 | |
| 575 | static u32 smsc95xx_ethtool_get_rx_csum(struct net_device *netdev) |
| 576 | { |
| 577 | struct usbnet *dev = netdev_priv(netdev); |
| 578 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 579 | |
| 580 | return pdata->use_rx_csum; |
| 581 | } |
| 582 | |
| 583 | static int smsc95xx_ethtool_set_rx_csum(struct net_device *netdev, u32 val) |
| 584 | { |
| 585 | struct usbnet *dev = netdev_priv(netdev); |
| 586 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 587 | |
| 588 | pdata->use_rx_csum = !!val; |
| 589 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 590 | return smsc95xx_set_csums(dev); |
| 591 | } |
| 592 | |
| 593 | static u32 smsc95xx_ethtool_get_tx_csum(struct net_device *netdev) |
| 594 | { |
| 595 | struct usbnet *dev = netdev_priv(netdev); |
| 596 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 597 | |
| 598 | return pdata->use_tx_csum; |
| 599 | } |
| 600 | |
| 601 | static int smsc95xx_ethtool_set_tx_csum(struct net_device *netdev, u32 val) |
| 602 | { |
| 603 | struct usbnet *dev = netdev_priv(netdev); |
| 604 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 605 | |
| 606 | pdata->use_tx_csum = !!val; |
| 607 | |
| 608 | ethtool_op_set_tx_hw_csum(netdev, pdata->use_tx_csum); |
| 609 | return smsc95xx_set_csums(dev); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 610 | } |
| 611 | |
Stephen Hemminger | 0fc0b73 | 2009-09-02 01:03:33 -0700 | [diff] [blame] | 612 | static const struct ethtool_ops smsc95xx_ethtool_ops = { |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 613 | .get_link = usbnet_get_link, |
| 614 | .nway_reset = usbnet_nway_reset, |
| 615 | .get_drvinfo = usbnet_get_drvinfo, |
| 616 | .get_msglevel = usbnet_get_msglevel, |
| 617 | .set_msglevel = usbnet_set_msglevel, |
| 618 | .get_settings = usbnet_get_settings, |
| 619 | .set_settings = usbnet_set_settings, |
| 620 | .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, |
| 621 | .get_eeprom = smsc95xx_ethtool_get_eeprom, |
| 622 | .set_eeprom = smsc95xx_ethtool_set_eeprom, |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 623 | .get_tx_csum = smsc95xx_ethtool_get_tx_csum, |
| 624 | .set_tx_csum = smsc95xx_ethtool_set_tx_csum, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 625 | .get_rx_csum = smsc95xx_ethtool_get_rx_csum, |
| 626 | .set_rx_csum = smsc95xx_ethtool_set_rx_csum, |
| 627 | }; |
| 628 | |
| 629 | static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| 630 | { |
| 631 | struct usbnet *dev = netdev_priv(netdev); |
| 632 | |
| 633 | if (!netif_running(netdev)) |
| 634 | return -EINVAL; |
| 635 | |
| 636 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); |
| 637 | } |
| 638 | |
| 639 | static void smsc95xx_init_mac_address(struct usbnet *dev) |
| 640 | { |
| 641 | /* try reading mac address from EEPROM */ |
| 642 | if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, |
| 643 | dev->net->dev_addr) == 0) { |
| 644 | if (is_valid_ether_addr(dev->net->dev_addr)) { |
| 645 | /* eeprom values are valid so use them */ |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 646 | netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 647 | return; |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | /* no eeprom, or eeprom values are invalid. generate random MAC */ |
| 652 | random_ether_addr(dev->net->dev_addr); |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 653 | netif_dbg(dev, ifup, dev->net, "MAC address set to random_ether_addr\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 654 | } |
| 655 | |
| 656 | static int smsc95xx_set_mac_address(struct usbnet *dev) |
| 657 | { |
| 658 | u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | |
| 659 | dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; |
| 660 | u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; |
| 661 | int ret; |
| 662 | |
| 663 | ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); |
| 664 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 665 | netdev_warn(dev->net, "Failed to write ADDRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 666 | return ret; |
| 667 | } |
| 668 | |
| 669 | ret = smsc95xx_write_reg(dev, ADDRH, addr_hi); |
| 670 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 671 | netdev_warn(dev->net, "Failed to write ADDRH: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 672 | return ret; |
| 673 | } |
| 674 | |
| 675 | return 0; |
| 676 | } |
| 677 | |
| 678 | /* starts the TX path */ |
| 679 | static void smsc95xx_start_tx_path(struct usbnet *dev) |
| 680 | { |
| 681 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 682 | unsigned long flags; |
| 683 | u32 reg_val; |
| 684 | |
| 685 | /* Enable Tx at MAC */ |
| 686 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 687 | pdata->mac_cr |= MAC_CR_TXEN_; |
| 688 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 689 | |
| 690 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| 691 | |
| 692 | /* Enable Tx at SCSRs */ |
| 693 | reg_val = TX_CFG_ON_; |
| 694 | smsc95xx_write_reg(dev, TX_CFG, reg_val); |
| 695 | } |
| 696 | |
| 697 | /* Starts the Receive path */ |
| 698 | static void smsc95xx_start_rx_path(struct usbnet *dev) |
| 699 | { |
| 700 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 701 | unsigned long flags; |
| 702 | |
| 703 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 704 | pdata->mac_cr |= MAC_CR_RXEN_; |
| 705 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 706 | |
| 707 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| 708 | } |
| 709 | |
| 710 | static int smsc95xx_phy_initialize(struct usbnet *dev) |
| 711 | { |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 712 | int bmcr, timeout = 0; |
| 713 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 714 | /* Initialize MII structure */ |
| 715 | dev->mii.dev = dev->net; |
| 716 | dev->mii.mdio_read = smsc95xx_mdio_read; |
| 717 | dev->mii.mdio_write = smsc95xx_mdio_write; |
| 718 | dev->mii.phy_id_mask = 0x1f; |
| 719 | dev->mii.reg_num_mask = 0x1f; |
| 720 | dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; |
| 721 | |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 722 | /* reset phy and wait for reset to complete */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 723 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 724 | |
| 725 | do { |
| 726 | msleep(10); |
| 727 | bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); |
| 728 | timeout++; |
| 729 | } while ((bmcr & MII_BMCR) && (timeout < 100)); |
| 730 | |
| 731 | if (timeout >= 100) { |
| 732 | netdev_warn(dev->net, "timeout on PHY Reset"); |
| 733 | return -EIO; |
| 734 | } |
| 735 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 736 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, |
| 737 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | |
| 738 | ADVERTISE_PAUSE_ASYM); |
| 739 | |
| 740 | /* read to clear */ |
| 741 | smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); |
| 742 | |
| 743 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, |
| 744 | PHY_INT_MASK_DEFAULT_); |
| 745 | mii_nway_restart(&dev->mii); |
| 746 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 747 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 748 | return 0; |
| 749 | } |
| 750 | |
| 751 | static int smsc95xx_reset(struct usbnet *dev) |
| 752 | { |
| 753 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 754 | struct net_device *netdev = dev->net; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 755 | u32 read_buf, write_buf, burst_cap; |
| 756 | int ret = 0, timeout; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 757 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 758 | netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 759 | |
| 760 | write_buf = HW_CFG_LRST_; |
| 761 | ret = smsc95xx_write_reg(dev, HW_CFG, write_buf); |
| 762 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 763 | netdev_warn(dev->net, "Failed to write HW_CFG_LRST_ bit in HW_CFG register, ret = %d\n", |
| 764 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 765 | return ret; |
| 766 | } |
| 767 | |
| 768 | timeout = 0; |
| 769 | do { |
| 770 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 771 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 772 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 773 | return ret; |
| 774 | } |
| 775 | msleep(10); |
| 776 | timeout++; |
| 777 | } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); |
| 778 | |
| 779 | if (timeout >= 100) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 780 | netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 781 | return ret; |
| 782 | } |
| 783 | |
| 784 | write_buf = PM_CTL_PHY_RST_; |
| 785 | ret = smsc95xx_write_reg(dev, PM_CTRL, write_buf); |
| 786 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 787 | netdev_warn(dev->net, "Failed to write PM_CTRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 788 | return ret; |
| 789 | } |
| 790 | |
| 791 | timeout = 0; |
| 792 | do { |
| 793 | ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); |
| 794 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 795 | netdev_warn(dev->net, "Failed to read PM_CTRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 796 | return ret; |
| 797 | } |
| 798 | msleep(10); |
| 799 | timeout++; |
| 800 | } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); |
| 801 | |
| 802 | if (timeout >= 100) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 803 | netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 804 | return ret; |
| 805 | } |
| 806 | |
| 807 | smsc95xx_init_mac_address(dev); |
| 808 | |
| 809 | ret = smsc95xx_set_mac_address(dev); |
| 810 | if (ret < 0) |
| 811 | return ret; |
| 812 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 813 | netif_dbg(dev, ifup, dev->net, |
| 814 | "MAC Address: %pM\n", dev->net->dev_addr); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 815 | |
| 816 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 817 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 818 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 819 | return ret; |
| 820 | } |
| 821 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 822 | netif_dbg(dev, ifup, dev->net, |
| 823 | "Read Value from HW_CFG : 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 824 | |
| 825 | read_buf |= HW_CFG_BIR_; |
| 826 | |
| 827 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| 828 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 829 | netdev_warn(dev->net, "Failed to write HW_CFG_BIR_ bit in HW_CFG register, ret = %d\n", |
| 830 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 831 | return ret; |
| 832 | } |
| 833 | |
| 834 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 835 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 836 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 837 | return ret; |
| 838 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 839 | netif_dbg(dev, ifup, dev->net, |
| 840 | "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", |
| 841 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 842 | |
| 843 | if (!turbo_mode) { |
| 844 | burst_cap = 0; |
| 845 | dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; |
| 846 | } else if (dev->udev->speed == USB_SPEED_HIGH) { |
| 847 | burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; |
| 848 | dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; |
| 849 | } else { |
| 850 | burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; |
| 851 | dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; |
| 852 | } |
| 853 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 854 | netif_dbg(dev, ifup, dev->net, |
| 855 | "rx_urb_size=%ld\n", (ulong)dev->rx_urb_size); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 856 | |
| 857 | ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); |
| 858 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 859 | netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 860 | return ret; |
| 861 | } |
| 862 | |
| 863 | ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); |
| 864 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 865 | netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 866 | return ret; |
| 867 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 868 | netif_dbg(dev, ifup, dev->net, |
| 869 | "Read Value from BURST_CAP after writing: 0x%08x\n", |
| 870 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 871 | |
| 872 | read_buf = DEFAULT_BULK_IN_DELAY; |
| 873 | ret = smsc95xx_write_reg(dev, BULK_IN_DLY, read_buf); |
| 874 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 875 | netdev_warn(dev->net, "ret = %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 876 | return ret; |
| 877 | } |
| 878 | |
| 879 | ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); |
| 880 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 881 | netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 882 | return ret; |
| 883 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 884 | netif_dbg(dev, ifup, dev->net, |
| 885 | "Read Value from BULK_IN_DLY after writing: 0x%08x\n", |
| 886 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 887 | |
| 888 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 889 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 890 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 891 | return ret; |
| 892 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 893 | netif_dbg(dev, ifup, dev->net, |
| 894 | "Read Value from HW_CFG: 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 895 | |
| 896 | if (turbo_mode) |
| 897 | read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); |
| 898 | |
| 899 | read_buf &= ~HW_CFG_RXDOFF_; |
| 900 | |
| 901 | /* set Rx data offset=2, Make IP header aligns on word boundary. */ |
| 902 | read_buf |= NET_IP_ALIGN << 9; |
| 903 | |
| 904 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| 905 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 906 | netdev_warn(dev->net, "Failed to write HW_CFG register, ret=%d\n", |
| 907 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 908 | return ret; |
| 909 | } |
| 910 | |
| 911 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 912 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 913 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 914 | return ret; |
| 915 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 916 | netif_dbg(dev, ifup, dev->net, |
| 917 | "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 918 | |
| 919 | write_buf = 0xFFFFFFFF; |
| 920 | ret = smsc95xx_write_reg(dev, INT_STS, write_buf); |
| 921 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 922 | netdev_warn(dev->net, "Failed to write INT_STS register, ret=%d\n", |
| 923 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 924 | return ret; |
| 925 | } |
| 926 | |
| 927 | ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); |
| 928 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 929 | netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 930 | return ret; |
| 931 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 932 | netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 933 | |
Steve Glendinning | f293501 | 2009-05-01 05:46:51 +0000 | [diff] [blame] | 934 | /* Configure GPIO pins as LED outputs */ |
| 935 | write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | |
| 936 | LED_GPIO_CFG_FDX_LED; |
| 937 | ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); |
| 938 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 939 | netdev_warn(dev->net, "Failed to write LED_GPIO_CFG register, ret=%d\n", |
| 940 | ret); |
Steve Glendinning | f293501 | 2009-05-01 05:46:51 +0000 | [diff] [blame] | 941 | return ret; |
| 942 | } |
| 943 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 944 | /* Init Tx */ |
| 945 | write_buf = 0; |
| 946 | ret = smsc95xx_write_reg(dev, FLOW, write_buf); |
| 947 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 948 | netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 949 | return ret; |
| 950 | } |
| 951 | |
| 952 | read_buf = AFC_CFG_DEFAULT; |
| 953 | ret = smsc95xx_write_reg(dev, AFC_CFG, read_buf); |
| 954 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 955 | netdev_warn(dev->net, "Failed to write AFC_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 956 | return ret; |
| 957 | } |
| 958 | |
| 959 | /* Don't need mac_cr_lock during initialisation */ |
| 960 | ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); |
| 961 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 962 | netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 963 | return ret; |
| 964 | } |
| 965 | |
| 966 | /* Init Rx */ |
| 967 | /* Set Vlan */ |
| 968 | write_buf = (u32)ETH_P_8021Q; |
| 969 | ret = smsc95xx_write_reg(dev, VLAN1, write_buf); |
| 970 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 971 | netdev_warn(dev->net, "Failed to write VAN1: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 972 | return ret; |
| 973 | } |
| 974 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 975 | /* Enable or disable checksum offload engines */ |
| 976 | ethtool_op_set_tx_hw_csum(netdev, pdata->use_tx_csum); |
| 977 | ret = smsc95xx_set_csums(dev); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 978 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 979 | netdev_warn(dev->net, "Failed to set csum offload: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 980 | return ret; |
| 981 | } |
| 982 | |
| 983 | smsc95xx_set_multicast(dev->net); |
| 984 | |
| 985 | if (smsc95xx_phy_initialize(dev) < 0) |
| 986 | return -EIO; |
| 987 | |
| 988 | ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); |
| 989 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 990 | netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 991 | return ret; |
| 992 | } |
| 993 | |
| 994 | /* enable PHY interrupts */ |
| 995 | read_buf |= INT_EP_CTL_PHY_INT_; |
| 996 | |
| 997 | ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); |
| 998 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 999 | netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1000 | return ret; |
| 1001 | } |
| 1002 | |
| 1003 | smsc95xx_start_tx_path(dev); |
| 1004 | smsc95xx_start_rx_path(dev); |
| 1005 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1006 | netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1007 | return 0; |
| 1008 | } |
| 1009 | |
Stephen Hemminger | 63e77b3 | 2009-03-20 19:35:58 +0000 | [diff] [blame] | 1010 | static const struct net_device_ops smsc95xx_netdev_ops = { |
| 1011 | .ndo_open = usbnet_open, |
| 1012 | .ndo_stop = usbnet_stop, |
| 1013 | .ndo_start_xmit = usbnet_start_xmit, |
| 1014 | .ndo_tx_timeout = usbnet_tx_timeout, |
| 1015 | .ndo_change_mtu = usbnet_change_mtu, |
| 1016 | .ndo_set_mac_address = eth_mac_addr, |
| 1017 | .ndo_validate_addr = eth_validate_addr, |
| 1018 | .ndo_do_ioctl = smsc95xx_ioctl, |
| 1019 | .ndo_set_multicast_list = smsc95xx_set_multicast, |
| 1020 | }; |
| 1021 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1022 | static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) |
| 1023 | { |
| 1024 | struct smsc95xx_priv *pdata = NULL; |
| 1025 | int ret; |
| 1026 | |
| 1027 | printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); |
| 1028 | |
| 1029 | ret = usbnet_get_endpoints(dev, intf); |
| 1030 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1031 | netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1032 | return ret; |
| 1033 | } |
| 1034 | |
| 1035 | dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), |
| 1036 | GFP_KERNEL); |
| 1037 | |
| 1038 | pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1039 | if (!pdata) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1040 | netdev_warn(dev->net, "Unable to allocate struct smsc95xx_priv\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1041 | return -ENOMEM; |
| 1042 | } |
| 1043 | |
| 1044 | spin_lock_init(&pdata->mac_cr_lock); |
| 1045 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1046 | pdata->use_tx_csum = DEFAULT_TX_CSUM_ENABLE; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1047 | pdata->use_rx_csum = DEFAULT_RX_CSUM_ENABLE; |
| 1048 | |
| 1049 | /* Init all registers */ |
| 1050 | ret = smsc95xx_reset(dev); |
| 1051 | |
Stephen Hemminger | 63e77b3 | 2009-03-20 19:35:58 +0000 | [diff] [blame] | 1052 | dev->net->netdev_ops = &smsc95xx_netdev_ops; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1053 | dev->net->ethtool_ops = &smsc95xx_ethtool_ops; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1054 | dev->net->flags |= IFF_MULTICAST; |
| 1055 | dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD; |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
| 1059 | static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) |
| 1060 | { |
| 1061 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1062 | if (pdata) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1063 | netif_dbg(dev, ifdown, dev->net, "free pdata\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1064 | kfree(pdata); |
| 1065 | pdata = NULL; |
| 1066 | dev->data[0] = 0; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | static void smsc95xx_rx_csum_offload(struct sk_buff *skb) |
| 1071 | { |
| 1072 | skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); |
| 1073 | skb->ip_summed = CHECKSUM_COMPLETE; |
| 1074 | skb_trim(skb, skb->len - 2); |
| 1075 | } |
| 1076 | |
| 1077 | static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
| 1078 | { |
| 1079 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1080 | |
| 1081 | while (skb->len > 0) { |
| 1082 | u32 header, align_count; |
| 1083 | struct sk_buff *ax_skb; |
| 1084 | unsigned char *packet; |
| 1085 | u16 size; |
| 1086 | |
| 1087 | memcpy(&header, skb->data, sizeof(header)); |
| 1088 | le32_to_cpus(&header); |
| 1089 | skb_pull(skb, 4 + NET_IP_ALIGN); |
| 1090 | packet = skb->data; |
| 1091 | |
| 1092 | /* get the packet length */ |
| 1093 | size = (u16)((header & RX_STS_FL_) >> 16); |
| 1094 | align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; |
| 1095 | |
| 1096 | if (unlikely(header & RX_STS_ES_)) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1097 | netif_dbg(dev, rx_err, dev->net, |
| 1098 | "Error header=0x%08x\n", header); |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1099 | dev->net->stats.rx_errors++; |
| 1100 | dev->net->stats.rx_dropped++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1101 | |
| 1102 | if (header & RX_STS_CRC_) { |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1103 | dev->net->stats.rx_crc_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1104 | } else { |
| 1105 | if (header & (RX_STS_TL_ | RX_STS_RF_)) |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1106 | dev->net->stats.rx_frame_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1107 | |
| 1108 | if ((header & RX_STS_LE_) && |
| 1109 | (!(header & RX_STS_FT_))) |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1110 | dev->net->stats.rx_length_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1111 | } |
| 1112 | } else { |
| 1113 | /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ |
| 1114 | if (unlikely(size > (ETH_FRAME_LEN + 12))) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1115 | netif_dbg(dev, rx_err, dev->net, |
| 1116 | "size err header=0x%08x\n", header); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | /* last frame in this batch */ |
| 1121 | if (skb->len == size) { |
| 1122 | if (pdata->use_rx_csum) |
| 1123 | smsc95xx_rx_csum_offload(skb); |
Peter Korsgaard | df18acc | 2009-05-13 10:10:41 +0000 | [diff] [blame] | 1124 | skb_trim(skb, skb->len - 4); /* remove fcs */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1125 | skb->truesize = size + sizeof(struct sk_buff); |
| 1126 | |
| 1127 | return 1; |
| 1128 | } |
| 1129 | |
| 1130 | ax_skb = skb_clone(skb, GFP_ATOMIC); |
| 1131 | if (unlikely(!ax_skb)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1132 | netdev_warn(dev->net, "Error allocating skb\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1133 | return 0; |
| 1134 | } |
| 1135 | |
| 1136 | ax_skb->len = size; |
| 1137 | ax_skb->data = packet; |
| 1138 | skb_set_tail_pointer(ax_skb, size); |
| 1139 | |
| 1140 | if (pdata->use_rx_csum) |
| 1141 | smsc95xx_rx_csum_offload(ax_skb); |
Peter Korsgaard | df18acc | 2009-05-13 10:10:41 +0000 | [diff] [blame] | 1142 | skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1143 | ax_skb->truesize = size + sizeof(struct sk_buff); |
| 1144 | |
| 1145 | usbnet_skb_return(dev, ax_skb); |
| 1146 | } |
| 1147 | |
| 1148 | skb_pull(skb, size); |
| 1149 | |
| 1150 | /* padding bytes before the next frame starts */ |
| 1151 | if (skb->len) |
| 1152 | skb_pull(skb, align_count); |
| 1153 | } |
| 1154 | |
| 1155 | if (unlikely(skb->len < 0)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1156 | netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | return 1; |
| 1161 | } |
| 1162 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1163 | static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) |
| 1164 | { |
| 1165 | int len = skb->data - skb->head; |
| 1166 | u16 high_16 = (u16)(skb->csum_offset + skb->csum_start - len); |
| 1167 | u16 low_16 = (u16)(skb->csum_start - len); |
| 1168 | return (high_16 << 16) | low_16; |
| 1169 | } |
| 1170 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1171 | static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, |
| 1172 | struct sk_buff *skb, gfp_t flags) |
| 1173 | { |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1174 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1175 | bool csum = pdata->use_tx_csum && (skb->ip_summed == CHECKSUM_PARTIAL); |
| 1176 | int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1177 | u32 tx_cmd_a, tx_cmd_b; |
| 1178 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1179 | /* We do not advertise SG, so skbs should be already linearized */ |
| 1180 | BUG_ON(skb_shinfo(skb)->nr_frags); |
| 1181 | |
| 1182 | if (skb_headroom(skb) < overhead) { |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1183 | struct sk_buff *skb2 = skb_copy_expand(skb, |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1184 | overhead, 0, flags); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1185 | dev_kfree_skb_any(skb); |
| 1186 | skb = skb2; |
| 1187 | if (!skb) |
| 1188 | return NULL; |
| 1189 | } |
| 1190 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1191 | if (csum) { |
| 1192 | u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); |
| 1193 | skb_push(skb, 4); |
| 1194 | memcpy(skb->data, &csum_preamble, 4); |
| 1195 | } |
| 1196 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1197 | skb_push(skb, 4); |
| 1198 | tx_cmd_b = (u32)(skb->len - 4); |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1199 | if (csum) |
| 1200 | tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1201 | cpu_to_le32s(&tx_cmd_b); |
| 1202 | memcpy(skb->data, &tx_cmd_b, 4); |
| 1203 | |
| 1204 | skb_push(skb, 4); |
| 1205 | tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | |
| 1206 | TX_CMD_A_LAST_SEG_; |
| 1207 | cpu_to_le32s(&tx_cmd_a); |
| 1208 | memcpy(skb->data, &tx_cmd_a, 4); |
| 1209 | |
| 1210 | return skb; |
| 1211 | } |
| 1212 | |
| 1213 | static const struct driver_info smsc95xx_info = { |
| 1214 | .description = "smsc95xx USB 2.0 Ethernet", |
| 1215 | .bind = smsc95xx_bind, |
| 1216 | .unbind = smsc95xx_unbind, |
| 1217 | .link_reset = smsc95xx_link_reset, |
| 1218 | .reset = smsc95xx_reset, |
| 1219 | .rx_fixup = smsc95xx_rx_fixup, |
| 1220 | .tx_fixup = smsc95xx_tx_fixup, |
| 1221 | .status = smsc95xx_status, |
Steve Glendinning | ec47562 | 2009-09-22 04:00:27 +0000 | [diff] [blame] | 1222 | .flags = FLAG_ETHER | FLAG_SEND_ZLP, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1223 | }; |
| 1224 | |
| 1225 | static const struct usb_device_id products[] = { |
| 1226 | { |
| 1227 | /* SMSC9500 USB Ethernet Device */ |
| 1228 | USB_DEVICE(0x0424, 0x9500), |
| 1229 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1230 | }, |
Steve Glendinning | 726474b | 2009-05-01 06:07:22 +0000 | [diff] [blame] | 1231 | { |
Steve Glendinning | 6f41d12 | 2009-09-22 05:13:02 +0000 | [diff] [blame] | 1232 | /* SMSC9505 USB Ethernet Device */ |
| 1233 | USB_DEVICE(0x0424, 0x9505), |
| 1234 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1235 | }, |
| 1236 | { |
| 1237 | /* SMSC9500A USB Ethernet Device */ |
| 1238 | USB_DEVICE(0x0424, 0x9E00), |
| 1239 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1240 | }, |
| 1241 | { |
| 1242 | /* SMSC9505A USB Ethernet Device */ |
| 1243 | USB_DEVICE(0x0424, 0x9E01), |
| 1244 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1245 | }, |
| 1246 | { |
Steve Glendinning | 726474b | 2009-05-01 06:07:22 +0000 | [diff] [blame] | 1247 | /* SMSC9512/9514 USB Hub & Ethernet Device */ |
| 1248 | USB_DEVICE(0x0424, 0xec00), |
| 1249 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1250 | }, |
Steve Glendinning | 6f41d12 | 2009-09-22 05:13:02 +0000 | [diff] [blame] | 1251 | { |
| 1252 | /* SMSC9500 USB Ethernet Device (SAL10) */ |
| 1253 | USB_DEVICE(0x0424, 0x9900), |
| 1254 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1255 | }, |
| 1256 | { |
| 1257 | /* SMSC9505 USB Ethernet Device (SAL10) */ |
| 1258 | USB_DEVICE(0x0424, 0x9901), |
| 1259 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1260 | }, |
| 1261 | { |
| 1262 | /* SMSC9500A USB Ethernet Device (SAL10) */ |
| 1263 | USB_DEVICE(0x0424, 0x9902), |
| 1264 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1265 | }, |
| 1266 | { |
| 1267 | /* SMSC9505A USB Ethernet Device (SAL10) */ |
| 1268 | USB_DEVICE(0x0424, 0x9903), |
| 1269 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1270 | }, |
| 1271 | { |
| 1272 | /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ |
| 1273 | USB_DEVICE(0x0424, 0x9904), |
| 1274 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1275 | }, |
| 1276 | { |
| 1277 | /* SMSC9500A USB Ethernet Device (HAL) */ |
| 1278 | USB_DEVICE(0x0424, 0x9905), |
| 1279 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1280 | }, |
| 1281 | { |
| 1282 | /* SMSC9505A USB Ethernet Device (HAL) */ |
| 1283 | USB_DEVICE(0x0424, 0x9906), |
| 1284 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1285 | }, |
| 1286 | { |
| 1287 | /* SMSC9500 USB Ethernet Device (Alternate ID) */ |
| 1288 | USB_DEVICE(0x0424, 0x9907), |
| 1289 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1290 | }, |
| 1291 | { |
| 1292 | /* SMSC9500A USB Ethernet Device (Alternate ID) */ |
| 1293 | USB_DEVICE(0x0424, 0x9908), |
| 1294 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1295 | }, |
| 1296 | { |
| 1297 | /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ |
| 1298 | USB_DEVICE(0x0424, 0x9909), |
| 1299 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1300 | }, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1301 | { }, /* END */ |
| 1302 | }; |
| 1303 | MODULE_DEVICE_TABLE(usb, products); |
| 1304 | |
| 1305 | static struct usb_driver smsc95xx_driver = { |
| 1306 | .name = "smsc95xx", |
| 1307 | .id_table = products, |
| 1308 | .probe = usbnet_probe, |
| 1309 | .suspend = usbnet_suspend, |
| 1310 | .resume = usbnet_resume, |
| 1311 | .disconnect = usbnet_disconnect, |
| 1312 | }; |
| 1313 | |
| 1314 | static int __init smsc95xx_init(void) |
| 1315 | { |
| 1316 | return usb_register(&smsc95xx_driver); |
| 1317 | } |
| 1318 | module_init(smsc95xx_init); |
| 1319 | |
| 1320 | static void __exit smsc95xx_exit(void) |
| 1321 | { |
| 1322 | usb_deregister(&smsc95xx_driver); |
| 1323 | } |
| 1324 | module_exit(smsc95xx_exit); |
| 1325 | |
| 1326 | MODULE_AUTHOR("Nancy Lin"); |
| 1327 | MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>"); |
| 1328 | MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); |
| 1329 | MODULE_LICENSE("GPL"); |