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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 31 | #include <linux/slab.h> |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 32 | #include "smsc95xx.h" |
| 33 | |
| 34 | #define SMSC_CHIPNAME "smsc95xx" |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 35 | #define SMSC_DRIVER_VERSION "1.0.4" |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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) |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 44 | #define DEFAULT_TX_CSUM_ENABLE (true) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 45 | #define DEFAULT_RX_CSUM_ENABLE (true) |
| 46 | #define SMSC95XX_INTERNAL_PHY_ID (1) |
| 47 | #define SMSC95XX_TX_OVERHEAD (8) |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 48 | #define SMSC95XX_TX_OVERHEAD_CSUM (12) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 49 | |
| 50 | struct smsc95xx_priv { |
| 51 | u32 mac_cr; |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 52 | u32 hash_hi; |
| 53 | u32 hash_lo; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 54 | spinlock_t mac_cr_lock; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 55 | }; |
| 56 | |
| 57 | struct usb_context { |
| 58 | struct usb_ctrlrequest req; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 59 | struct usbnet *dev; |
| 60 | }; |
| 61 | |
Rusty Russell | eb93992 | 2011-12-19 14:08:01 +0000 | [diff] [blame] | 62 | static bool turbo_mode = true; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 82 | 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] | 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)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 110 | 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] | 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)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 142 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 154 | netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 176 | netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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)) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 191 | netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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_)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 209 | netdev_warn(dev->net, "EEPROM read operation timeout\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 224 | if (!(val & E2P_CMD_BUSY_)) |
| 225 | return 0; |
| 226 | |
| 227 | udelay(40); |
| 228 | } while (!time_after(jiffies, start_time + HZ)); |
| 229 | |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 230 | netdev_warn(dev->net, "EEPROM is busy\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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 | |
Steve Glendinning | 150a7fc | 2009-01-25 17:54:46 -0800 | [diff] [blame] | 305 | static void smsc95xx_async_cmd_callback(struct urb *urb) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 306 | { |
| 307 | struct usb_context *usb_context = urb->context; |
| 308 | struct usbnet *dev = usb_context->dev; |
Oliver Neukum | c94cb31 | 2008-12-18 23:00:59 -0800 | [diff] [blame] | 309 | int status = urb->status; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 310 | |
Oliver Neukum | c94cb31 | 2008-12-18 23:00:59 -0800 | [diff] [blame] | 311 | if (status < 0) |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 312 | netdev_warn(dev->net, "async callback failed with %d\n", status); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 313 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 314 | kfree(usb_context); |
| 315 | usb_free_urb(urb); |
| 316 | } |
| 317 | |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 318 | 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] | 319 | { |
| 320 | struct usb_context *usb_context; |
| 321 | int status; |
| 322 | struct urb *urb; |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 323 | const u16 size = 4; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 324 | |
| 325 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 326 | if (!urb) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 327 | netdev_warn(dev->net, "Error allocating URB\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 328 | return -ENOMEM; |
| 329 | } |
| 330 | |
| 331 | usb_context = kmalloc(sizeof(struct usb_context), GFP_ATOMIC); |
| 332 | if (usb_context == NULL) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 333 | netdev_warn(dev->net, "Error allocating control msg\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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; |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 342 | usb_context->req.wIndex = cpu_to_le16(index); |
| 343 | usb_context->req.wLength = cpu_to_le16(size); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 344 | |
| 345 | usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| 346 | (void *)&usb_context->req, data, size, |
Steve Glendinning | 150a7fc | 2009-01-25 17:54:46 -0800 | [diff] [blame] | 347 | smsc95xx_async_cmd_callback, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 348 | (void *)usb_context); |
| 349 | |
| 350 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 351 | if (status < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 352 | netdev_warn(dev->net, "Error submitting control msg, sts=%d\n", |
| 353 | status); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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]); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 373 | unsigned long flags; |
| 374 | |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 375 | pdata->hash_hi = 0; |
| 376 | pdata->hash_lo = 0; |
| 377 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 378 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 379 | |
| 380 | if (dev->net->flags & IFF_PROMISC) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 381 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 385 | netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 386 | pdata->mac_cr |= MAC_CR_MCPAS_; |
| 387 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 388 | } else if (!netdev_mc_empty(dev->net)) { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 389 | struct netdev_hw_addr *ha; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 390 | |
| 391 | pdata->mac_cr |= MAC_CR_HPFILT_; |
| 392 | pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); |
| 393 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 394 | netdev_for_each_mc_addr(ha, netdev) { |
| 395 | u32 bitnum = smsc95xx_hash(ha->addr); |
Jiri Pirko | a92635d | 2010-02-18 04:02:26 +0000 | [diff] [blame] | 396 | u32 mask = 0x01 << (bitnum & 0x1F); |
| 397 | if (bitnum & 0x20) |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 398 | pdata->hash_hi |= mask; |
Jiri Pirko | a92635d | 2010-02-18 04:02:26 +0000 | [diff] [blame] | 399 | else |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 400 | pdata->hash_lo |= mask; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 401 | } |
| 402 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 403 | netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 404 | pdata->hash_hi, pdata->hash_lo); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 405 | } else { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 406 | netif_dbg(dev, drv, dev->net, "receive own packets only\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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 */ |
Marc Zyngier | 3c0f3c6 | 2011-03-18 03:53:58 +0000 | [diff] [blame] | 414 | smsc95xx_write_reg_async(dev, HASHH, &pdata->hash_hi); |
| 415 | smsc95xx_write_reg_async(dev, HASHL, &pdata->hash_lo); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 416 | smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr); |
| 417 | } |
| 418 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 426 | netdev_warn(dev->net, "error reading AFC_CFG\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 427 | return; |
| 428 | } |
| 429 | |
| 430 | if (duplex == DUPLEX_FULL) { |
Steve Glendinning | bc02ff9 | 2008-12-16 02:00:48 -0800 | [diff] [blame] | 431 | u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 443 | 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] | 444 | cap & FLOW_CTRL_RX ? "enabled" : "disabled", |
| 445 | cap & FLOW_CTRL_TX ? "enabled" : "disabled"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 446 | } else { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 447 | netif_dbg(dev, link, dev->net, "half duplex\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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; |
David Decotigny | 8ae6dac | 2011-04-27 18:32:38 +0000 | [diff] [blame] | 460 | struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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 | |
David Decotigny | 8ae6dac | 2011-04-27 18:32:38 +0000 | [diff] [blame] | 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); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 501 | netdev_warn(dev->net, "unexpected urb length %d\n", |
| 502 | urb->actual_length); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 503 | return; |
| 504 | } |
| 505 | |
| 506 | memcpy(&intdata, urb->transfer_buffer, 4); |
Steve Glendinning | 1d74a6b | 2008-10-09 14:34:47 -0700 | [diff] [blame] | 507 | le32_to_cpus(&intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 508 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 509 | netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 510 | |
| 511 | if (intdata & INT_ENP_PHY_INT_) |
| 512 | usbnet_defer_kevent(dev, EVENT_LINK_RESET); |
| 513 | else |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 514 | netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", |
| 515 | intdata); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 516 | } |
| 517 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 518 | /* Enable or disable Tx & Rx checksum offload engines */ |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 519 | static int smsc95xx_set_features(struct net_device *netdev, |
| 520 | netdev_features_t features) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 521 | { |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 522 | struct usbnet *dev = netdev_priv(netdev); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 523 | u32 read_buf; |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 524 | int ret; |
| 525 | |
| 526 | ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 527 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 528 | netdev_warn(dev->net, "Failed to read COE_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 529 | return ret; |
| 530 | } |
| 531 | |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 532 | if (features & NETIF_F_HW_CSUM) |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 533 | read_buf |= Tx_COE_EN_; |
| 534 | else |
| 535 | read_buf &= ~Tx_COE_EN_; |
| 536 | |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 537 | if (features & NETIF_F_RXCSUM) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 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) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 544 | netdev_warn(dev->net, "Failed to write COE_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 545 | return ret; |
| 546 | } |
| 547 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 548 | 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] | 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) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 573 | netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", |
| 574 | ee->magic); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 575 | return -EINVAL; |
| 576 | } |
| 577 | |
| 578 | return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); |
| 579 | } |
| 580 | |
Emeric Vigier | 9fa32e9 | 2012-07-09 17:44:45 -0400 | [diff] [blame] | 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); |
Dan Carpenter | d348446 | 2012-07-10 20:32:51 +0000 | [diff] [blame^] | 592 | unsigned int i, j; |
| 593 | int retval; |
Emeric Vigier | 9fa32e9 | 2012-07-09 17:44:45 -0400 | [diff] [blame] | 594 | u32 *data = buf; |
| 595 | |
| 596 | retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); |
| 597 | if (retval < 0) { |
| 598 | netdev_warn(netdev, "REGS: cannot read ID_REV\n"); |
| 599 | return; |
| 600 | } |
| 601 | |
| 602 | for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { |
| 603 | retval = smsc95xx_read_reg(dev, i, &data[j]); |
| 604 | if (retval < 0) { |
| 605 | netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); |
| 606 | return; |
| 607 | } |
| 608 | } |
| 609 | } |
| 610 | |
Stephen Hemminger | 0fc0b73 | 2009-09-02 01:03:33 -0700 | [diff] [blame] | 611 | static const struct ethtool_ops smsc95xx_ethtool_ops = { |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 612 | .get_link = usbnet_get_link, |
| 613 | .nway_reset = usbnet_nway_reset, |
| 614 | .get_drvinfo = usbnet_get_drvinfo, |
| 615 | .get_msglevel = usbnet_get_msglevel, |
| 616 | .set_msglevel = usbnet_set_msglevel, |
| 617 | .get_settings = usbnet_get_settings, |
| 618 | .set_settings = usbnet_set_settings, |
| 619 | .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, |
| 620 | .get_eeprom = smsc95xx_ethtool_get_eeprom, |
| 621 | .set_eeprom = smsc95xx_ethtool_set_eeprom, |
Emeric Vigier | 9fa32e9 | 2012-07-09 17:44:45 -0400 | [diff] [blame] | 622 | .get_regs_len = smsc95xx_ethtool_getregslen, |
| 623 | .get_regs = smsc95xx_ethtool_getregs, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 624 | }; |
| 625 | |
| 626 | static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| 627 | { |
| 628 | struct usbnet *dev = netdev_priv(netdev); |
| 629 | |
| 630 | if (!netif_running(netdev)) |
| 631 | return -EINVAL; |
| 632 | |
| 633 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); |
| 634 | } |
| 635 | |
| 636 | static void smsc95xx_init_mac_address(struct usbnet *dev) |
| 637 | { |
| 638 | /* try reading mac address from EEPROM */ |
| 639 | if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, |
| 640 | dev->net->dev_addr) == 0) { |
| 641 | if (is_valid_ether_addr(dev->net->dev_addr)) { |
| 642 | /* eeprom values are valid so use them */ |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 643 | netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 644 | return; |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | /* no eeprom, or eeprom values are invalid. generate random MAC */ |
Danny Kukawka | f2cedb6 | 2012-02-15 06:45:39 +0000 | [diff] [blame] | 649 | eth_hw_addr_random(dev->net); |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 650 | 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] | 651 | } |
| 652 | |
| 653 | static int smsc95xx_set_mac_address(struct usbnet *dev) |
| 654 | { |
| 655 | u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | |
| 656 | dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; |
| 657 | u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; |
| 658 | int ret; |
| 659 | |
| 660 | ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); |
| 661 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 662 | netdev_warn(dev->net, "Failed to write ADDRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 663 | return ret; |
| 664 | } |
| 665 | |
| 666 | ret = smsc95xx_write_reg(dev, ADDRH, addr_hi); |
| 667 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 668 | netdev_warn(dev->net, "Failed to write ADDRH: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 669 | return ret; |
| 670 | } |
| 671 | |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | /* starts the TX path */ |
| 676 | static void smsc95xx_start_tx_path(struct usbnet *dev) |
| 677 | { |
| 678 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 679 | unsigned long flags; |
| 680 | u32 reg_val; |
| 681 | |
| 682 | /* Enable Tx at MAC */ |
| 683 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 684 | pdata->mac_cr |= MAC_CR_TXEN_; |
| 685 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 686 | |
| 687 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| 688 | |
| 689 | /* Enable Tx at SCSRs */ |
| 690 | reg_val = TX_CFG_ON_; |
| 691 | smsc95xx_write_reg(dev, TX_CFG, reg_val); |
| 692 | } |
| 693 | |
| 694 | /* Starts the Receive path */ |
| 695 | static void smsc95xx_start_rx_path(struct usbnet *dev) |
| 696 | { |
| 697 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 698 | unsigned long flags; |
| 699 | |
| 700 | spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| 701 | pdata->mac_cr |= MAC_CR_RXEN_; |
| 702 | spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| 703 | |
| 704 | smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| 705 | } |
| 706 | |
| 707 | static int smsc95xx_phy_initialize(struct usbnet *dev) |
| 708 | { |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 709 | int bmcr, timeout = 0; |
| 710 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 711 | /* Initialize MII structure */ |
| 712 | dev->mii.dev = dev->net; |
| 713 | dev->mii.mdio_read = smsc95xx_mdio_read; |
| 714 | dev->mii.mdio_write = smsc95xx_mdio_write; |
| 715 | dev->mii.phy_id_mask = 0x1f; |
| 716 | dev->mii.reg_num_mask = 0x1f; |
| 717 | dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; |
| 718 | |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 719 | /* reset phy and wait for reset to complete */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 720 | 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] | 721 | |
| 722 | do { |
| 723 | msleep(10); |
| 724 | bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); |
| 725 | timeout++; |
Rabin Vincent | d946092 | 2011-04-30 08:29:27 +0000 | [diff] [blame] | 726 | } while ((bmcr & BMCR_RESET) && (timeout < 100)); |
Steve Glendinning | db443c4 | 2010-03-16 09:03:06 +0000 | [diff] [blame] | 727 | |
| 728 | if (timeout >= 100) { |
| 729 | netdev_warn(dev->net, "timeout on PHY Reset"); |
| 730 | return -EIO; |
| 731 | } |
| 732 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 733 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, |
| 734 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | |
| 735 | ADVERTISE_PAUSE_ASYM); |
| 736 | |
| 737 | /* read to clear */ |
| 738 | smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); |
| 739 | |
| 740 | smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, |
| 741 | PHY_INT_MASK_DEFAULT_); |
| 742 | mii_nway_restart(&dev->mii); |
| 743 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 744 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 745 | return 0; |
| 746 | } |
| 747 | |
| 748 | static int smsc95xx_reset(struct usbnet *dev) |
| 749 | { |
| 750 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 751 | u32 read_buf, write_buf, burst_cap; |
| 752 | int ret = 0, timeout; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 753 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 754 | netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 755 | |
| 756 | write_buf = HW_CFG_LRST_; |
| 757 | ret = smsc95xx_write_reg(dev, HW_CFG, write_buf); |
| 758 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 759 | netdev_warn(dev->net, "Failed to write HW_CFG_LRST_ bit in HW_CFG register, ret = %d\n", |
| 760 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | timeout = 0; |
| 765 | do { |
| 766 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 767 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 768 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 769 | return ret; |
| 770 | } |
| 771 | msleep(10); |
| 772 | timeout++; |
| 773 | } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); |
| 774 | |
| 775 | if (timeout >= 100) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 776 | netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 777 | return ret; |
| 778 | } |
| 779 | |
| 780 | write_buf = PM_CTL_PHY_RST_; |
| 781 | ret = smsc95xx_write_reg(dev, PM_CTRL, write_buf); |
| 782 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 783 | netdev_warn(dev->net, "Failed to write PM_CTRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 784 | return ret; |
| 785 | } |
| 786 | |
| 787 | timeout = 0; |
| 788 | do { |
| 789 | ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); |
| 790 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 791 | netdev_warn(dev->net, "Failed to read PM_CTRL: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 792 | return ret; |
| 793 | } |
| 794 | msleep(10); |
| 795 | timeout++; |
| 796 | } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); |
| 797 | |
| 798 | if (timeout >= 100) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 799 | netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 800 | return ret; |
| 801 | } |
| 802 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 803 | ret = smsc95xx_set_mac_address(dev); |
| 804 | if (ret < 0) |
| 805 | return ret; |
| 806 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 807 | netif_dbg(dev, ifup, dev->net, |
| 808 | "MAC Address: %pM\n", dev->net->dev_addr); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 809 | |
| 810 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 811 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 812 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 813 | return ret; |
| 814 | } |
| 815 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 816 | netif_dbg(dev, ifup, dev->net, |
| 817 | "Read Value from HW_CFG : 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 818 | |
| 819 | read_buf |= HW_CFG_BIR_; |
| 820 | |
| 821 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| 822 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 823 | netdev_warn(dev->net, "Failed to write HW_CFG_BIR_ bit in HW_CFG register, ret = %d\n", |
| 824 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 825 | return ret; |
| 826 | } |
| 827 | |
| 828 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 829 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 830 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 831 | return ret; |
| 832 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 833 | netif_dbg(dev, ifup, dev->net, |
| 834 | "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", |
| 835 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 836 | |
| 837 | if (!turbo_mode) { |
| 838 | burst_cap = 0; |
| 839 | dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; |
| 840 | } else if (dev->udev->speed == USB_SPEED_HIGH) { |
| 841 | burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; |
| 842 | dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; |
| 843 | } else { |
| 844 | burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; |
| 845 | dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; |
| 846 | } |
| 847 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 848 | netif_dbg(dev, ifup, dev->net, |
| 849 | "rx_urb_size=%ld\n", (ulong)dev->rx_urb_size); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 850 | |
| 851 | ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); |
| 852 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 853 | netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 854 | return ret; |
| 855 | } |
| 856 | |
| 857 | ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); |
| 858 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 859 | netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 860 | return ret; |
| 861 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 862 | netif_dbg(dev, ifup, dev->net, |
| 863 | "Read Value from BURST_CAP after writing: 0x%08x\n", |
| 864 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 865 | |
| 866 | read_buf = DEFAULT_BULK_IN_DELAY; |
| 867 | ret = smsc95xx_write_reg(dev, BULK_IN_DLY, read_buf); |
| 868 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 869 | netdev_warn(dev->net, "ret = %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 870 | return ret; |
| 871 | } |
| 872 | |
| 873 | ret = smsc95xx_read_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, "Failed to read BULK_IN_DLY: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 876 | return ret; |
| 877 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 878 | netif_dbg(dev, ifup, dev->net, |
| 879 | "Read Value from BULK_IN_DLY after writing: 0x%08x\n", |
| 880 | read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 881 | |
| 882 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 883 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 884 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 885 | return ret; |
| 886 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 887 | netif_dbg(dev, ifup, dev->net, |
| 888 | "Read Value from HW_CFG: 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 889 | |
| 890 | if (turbo_mode) |
| 891 | read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); |
| 892 | |
| 893 | read_buf &= ~HW_CFG_RXDOFF_; |
| 894 | |
| 895 | /* set Rx data offset=2, Make IP header aligns on word boundary. */ |
| 896 | read_buf |= NET_IP_ALIGN << 9; |
| 897 | |
| 898 | ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| 899 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 900 | netdev_warn(dev->net, "Failed to write HW_CFG register, ret=%d\n", |
| 901 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 902 | return ret; |
| 903 | } |
| 904 | |
| 905 | ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| 906 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 907 | netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 908 | return ret; |
| 909 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 910 | netif_dbg(dev, ifup, dev->net, |
| 911 | "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 912 | |
| 913 | write_buf = 0xFFFFFFFF; |
| 914 | ret = smsc95xx_write_reg(dev, INT_STS, write_buf); |
| 915 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 916 | netdev_warn(dev->net, "Failed to write INT_STS register, ret=%d\n", |
| 917 | ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 918 | return ret; |
| 919 | } |
| 920 | |
| 921 | ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); |
| 922 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 923 | netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 924 | return ret; |
| 925 | } |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 926 | 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] | 927 | |
Steve Glendinning | f293501 | 2009-05-01 05:46:51 +0000 | [diff] [blame] | 928 | /* Configure GPIO pins as LED outputs */ |
| 929 | write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | |
| 930 | LED_GPIO_CFG_FDX_LED; |
| 931 | ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); |
| 932 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 933 | netdev_warn(dev->net, "Failed to write LED_GPIO_CFG register, ret=%d\n", |
| 934 | ret); |
Steve Glendinning | f293501 | 2009-05-01 05:46:51 +0000 | [diff] [blame] | 935 | return ret; |
| 936 | } |
| 937 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 938 | /* Init Tx */ |
| 939 | write_buf = 0; |
| 940 | ret = smsc95xx_write_reg(dev, FLOW, write_buf); |
| 941 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 942 | netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 943 | return ret; |
| 944 | } |
| 945 | |
| 946 | read_buf = AFC_CFG_DEFAULT; |
| 947 | ret = smsc95xx_write_reg(dev, AFC_CFG, read_buf); |
| 948 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 949 | netdev_warn(dev->net, "Failed to write AFC_CFG: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 950 | return ret; |
| 951 | } |
| 952 | |
| 953 | /* Don't need mac_cr_lock during initialisation */ |
| 954 | ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); |
| 955 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 956 | netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 957 | return ret; |
| 958 | } |
| 959 | |
| 960 | /* Init Rx */ |
| 961 | /* Set Vlan */ |
| 962 | write_buf = (u32)ETH_P_8021Q; |
| 963 | ret = smsc95xx_write_reg(dev, VLAN1, write_buf); |
| 964 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 965 | netdev_warn(dev->net, "Failed to write VAN1: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 966 | return ret; |
| 967 | } |
| 968 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 969 | /* Enable or disable checksum offload engines */ |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 970 | smsc95xx_set_features(dev->net, dev->net->features); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 971 | |
| 972 | smsc95xx_set_multicast(dev->net); |
| 973 | |
| 974 | if (smsc95xx_phy_initialize(dev) < 0) |
| 975 | return -EIO; |
| 976 | |
| 977 | ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); |
| 978 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 979 | 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] | 980 | return ret; |
| 981 | } |
| 982 | |
| 983 | /* enable PHY interrupts */ |
| 984 | read_buf |= INT_EP_CTL_PHY_INT_; |
| 985 | |
| 986 | ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); |
| 987 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 988 | 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] | 989 | return ret; |
| 990 | } |
| 991 | |
| 992 | smsc95xx_start_tx_path(dev); |
| 993 | smsc95xx_start_rx_path(dev); |
| 994 | |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 995 | netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 996 | return 0; |
| 997 | } |
| 998 | |
Stephen Hemminger | 63e77b3 | 2009-03-20 19:35:58 +0000 | [diff] [blame] | 999 | static const struct net_device_ops smsc95xx_netdev_ops = { |
| 1000 | .ndo_open = usbnet_open, |
| 1001 | .ndo_stop = usbnet_stop, |
| 1002 | .ndo_start_xmit = usbnet_start_xmit, |
| 1003 | .ndo_tx_timeout = usbnet_tx_timeout, |
| 1004 | .ndo_change_mtu = usbnet_change_mtu, |
| 1005 | .ndo_set_mac_address = eth_mac_addr, |
| 1006 | .ndo_validate_addr = eth_validate_addr, |
| 1007 | .ndo_do_ioctl = smsc95xx_ioctl, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1008 | .ndo_set_rx_mode = smsc95xx_set_multicast, |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1009 | .ndo_set_features = smsc95xx_set_features, |
Stephen Hemminger | 63e77b3 | 2009-03-20 19:35:58 +0000 | [diff] [blame] | 1010 | }; |
| 1011 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1012 | static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) |
| 1013 | { |
| 1014 | struct smsc95xx_priv *pdata = NULL; |
| 1015 | int ret; |
| 1016 | |
| 1017 | printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); |
| 1018 | |
| 1019 | ret = usbnet_get_endpoints(dev, intf); |
| 1020 | if (ret < 0) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1021 | netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1022 | return ret; |
| 1023 | } |
| 1024 | |
| 1025 | dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), |
| 1026 | GFP_KERNEL); |
| 1027 | |
| 1028 | pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1029 | if (!pdata) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1030 | netdev_warn(dev->net, "Unable to allocate struct smsc95xx_priv\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1031 | return -ENOMEM; |
| 1032 | } |
| 1033 | |
| 1034 | spin_lock_init(&pdata->mac_cr_lock); |
| 1035 | |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1036 | if (DEFAULT_TX_CSUM_ENABLE) |
| 1037 | dev->net->features |= NETIF_F_HW_CSUM; |
| 1038 | if (DEFAULT_RX_CSUM_ENABLE) |
| 1039 | dev->net->features |= NETIF_F_RXCSUM; |
| 1040 | |
| 1041 | dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1042 | |
Bernard Blackham | f4e8ab7 | 2010-10-18 13:16:39 +0000 | [diff] [blame] | 1043 | smsc95xx_init_mac_address(dev); |
| 1044 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1045 | /* Init all registers */ |
| 1046 | ret = smsc95xx_reset(dev); |
| 1047 | |
Stephen Hemminger | 63e77b3 | 2009-03-20 19:35:58 +0000 | [diff] [blame] | 1048 | dev->net->netdev_ops = &smsc95xx_netdev_ops; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1049 | dev->net->ethtool_ops = &smsc95xx_ethtool_ops; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1050 | dev->net->flags |= IFF_MULTICAST; |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1051 | dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; |
Stephane Fillod | 9bbf566 | 2012-04-20 09:39:23 +0000 | [diff] [blame] | 1052 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1053 | return 0; |
| 1054 | } |
| 1055 | |
| 1056 | static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) |
| 1057 | { |
| 1058 | struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); |
| 1059 | if (pdata) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1060 | netif_dbg(dev, ifdown, dev->net, "free pdata\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1061 | kfree(pdata); |
| 1062 | pdata = NULL; |
| 1063 | dev->data[0] = 0; |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | static void smsc95xx_rx_csum_offload(struct sk_buff *skb) |
| 1068 | { |
| 1069 | skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); |
| 1070 | skb->ip_summed = CHECKSUM_COMPLETE; |
| 1071 | skb_trim(skb, skb->len - 2); |
| 1072 | } |
| 1073 | |
| 1074 | static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
| 1075 | { |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1076 | while (skb->len > 0) { |
| 1077 | u32 header, align_count; |
| 1078 | struct sk_buff *ax_skb; |
| 1079 | unsigned char *packet; |
| 1080 | u16 size; |
| 1081 | |
| 1082 | memcpy(&header, skb->data, sizeof(header)); |
| 1083 | le32_to_cpus(&header); |
| 1084 | skb_pull(skb, 4 + NET_IP_ALIGN); |
| 1085 | packet = skb->data; |
| 1086 | |
| 1087 | /* get the packet length */ |
| 1088 | size = (u16)((header & RX_STS_FL_) >> 16); |
| 1089 | align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; |
| 1090 | |
| 1091 | if (unlikely(header & RX_STS_ES_)) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1092 | netif_dbg(dev, rx_err, dev->net, |
| 1093 | "Error header=0x%08x\n", header); |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1094 | dev->net->stats.rx_errors++; |
| 1095 | dev->net->stats.rx_dropped++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1096 | |
| 1097 | if (header & RX_STS_CRC_) { |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1098 | dev->net->stats.rx_crc_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1099 | } else { |
| 1100 | if (header & (RX_STS_TL_ | RX_STS_RF_)) |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1101 | dev->net->stats.rx_frame_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1102 | |
| 1103 | if ((header & RX_STS_LE_) && |
| 1104 | (!(header & RX_STS_FT_))) |
Herbert Xu | 80667ac | 2009-06-29 16:53:00 +0000 | [diff] [blame] | 1105 | dev->net->stats.rx_length_errors++; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1106 | } |
| 1107 | } else { |
| 1108 | /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ |
| 1109 | if (unlikely(size > (ETH_FRAME_LEN + 12))) { |
Joe Perches | a475f60 | 2010-02-17 10:30:24 +0000 | [diff] [blame] | 1110 | netif_dbg(dev, rx_err, dev->net, |
| 1111 | "size err header=0x%08x\n", header); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | /* last frame in this batch */ |
| 1116 | if (skb->len == size) { |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1117 | if (dev->net->features & NETIF_F_RXCSUM) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1118 | smsc95xx_rx_csum_offload(skb); |
Peter Korsgaard | df18acc | 2009-05-13 10:10:41 +0000 | [diff] [blame] | 1119 | skb_trim(skb, skb->len - 4); /* remove fcs */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1120 | skb->truesize = size + sizeof(struct sk_buff); |
| 1121 | |
| 1122 | return 1; |
| 1123 | } |
| 1124 | |
| 1125 | ax_skb = skb_clone(skb, GFP_ATOMIC); |
| 1126 | if (unlikely(!ax_skb)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1127 | netdev_warn(dev->net, "Error allocating skb\n"); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1128 | return 0; |
| 1129 | } |
| 1130 | |
| 1131 | ax_skb->len = size; |
| 1132 | ax_skb->data = packet; |
| 1133 | skb_set_tail_pointer(ax_skb, size); |
| 1134 | |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1135 | if (dev->net->features & NETIF_F_RXCSUM) |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1136 | smsc95xx_rx_csum_offload(ax_skb); |
Peter Korsgaard | df18acc | 2009-05-13 10:10:41 +0000 | [diff] [blame] | 1137 | skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1138 | ax_skb->truesize = size + sizeof(struct sk_buff); |
| 1139 | |
| 1140 | usbnet_skb_return(dev, ax_skb); |
| 1141 | } |
| 1142 | |
| 1143 | skb_pull(skb, size); |
| 1144 | |
| 1145 | /* padding bytes before the next frame starts */ |
| 1146 | if (skb->len) |
| 1147 | skb_pull(skb, align_count); |
| 1148 | } |
| 1149 | |
| 1150 | if (unlikely(skb->len < 0)) { |
Joe Perches | 60b8675 | 2010-02-17 10:30:23 +0000 | [diff] [blame] | 1151 | netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1152 | return 0; |
| 1153 | } |
| 1154 | |
| 1155 | return 1; |
| 1156 | } |
| 1157 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1158 | static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) |
| 1159 | { |
Michał Mirosław | 55508d6 | 2010-12-14 15:24:08 +0000 | [diff] [blame] | 1160 | u16 low_16 = (u16)skb_checksum_start_offset(skb); |
| 1161 | u16 high_16 = low_16 + skb->csum_offset; |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1162 | return (high_16 << 16) | low_16; |
| 1163 | } |
| 1164 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1165 | static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, |
| 1166 | struct sk_buff *skb, gfp_t flags) |
| 1167 | { |
Michał Mirosław | 78e47fe | 2011-04-01 20:56:23 -0700 | [diff] [blame] | 1168 | bool csum = skb->ip_summed == CHECKSUM_PARTIAL; |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1169 | int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1170 | u32 tx_cmd_a, tx_cmd_b; |
| 1171 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1172 | /* We do not advertise SG, so skbs should be already linearized */ |
| 1173 | BUG_ON(skb_shinfo(skb)->nr_frags); |
| 1174 | |
| 1175 | if (skb_headroom(skb) < overhead) { |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1176 | struct sk_buff *skb2 = skb_copy_expand(skb, |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1177 | overhead, 0, flags); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1178 | dev_kfree_skb_any(skb); |
| 1179 | skb = skb2; |
| 1180 | if (!skb) |
| 1181 | return NULL; |
| 1182 | } |
| 1183 | |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1184 | if (csum) { |
Steve Glendinning | 11bc308 | 2010-03-18 22:18:41 -0700 | [diff] [blame] | 1185 | if (skb->len <= 45) { |
| 1186 | /* workaround - hardware tx checksum does not work |
| 1187 | * properly with extremely small packets */ |
Michał Mirosław | 55508d6 | 2010-12-14 15:24:08 +0000 | [diff] [blame] | 1188 | long csstart = skb_checksum_start_offset(skb); |
Steve Glendinning | 11bc308 | 2010-03-18 22:18:41 -0700 | [diff] [blame] | 1189 | __wsum calc = csum_partial(skb->data + csstart, |
| 1190 | skb->len - csstart, 0); |
| 1191 | *((__sum16 *)(skb->data + csstart |
| 1192 | + skb->csum_offset)) = csum_fold(calc); |
| 1193 | |
| 1194 | csum = false; |
| 1195 | } else { |
| 1196 | u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); |
| 1197 | skb_push(skb, 4); |
| 1198 | memcpy(skb->data, &csum_preamble, 4); |
| 1199 | } |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1200 | } |
| 1201 | |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1202 | skb_push(skb, 4); |
| 1203 | tx_cmd_b = (u32)(skb->len - 4); |
Steve Glendinning | f7b2927 | 2008-11-20 04:19:21 -0800 | [diff] [blame] | 1204 | if (csum) |
| 1205 | tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1206 | cpu_to_le32s(&tx_cmd_b); |
| 1207 | memcpy(skb->data, &tx_cmd_b, 4); |
| 1208 | |
| 1209 | skb_push(skb, 4); |
| 1210 | tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | |
| 1211 | TX_CMD_A_LAST_SEG_; |
| 1212 | cpu_to_le32s(&tx_cmd_a); |
| 1213 | memcpy(skb->data, &tx_cmd_a, 4); |
| 1214 | |
| 1215 | return skb; |
| 1216 | } |
| 1217 | |
| 1218 | static const struct driver_info smsc95xx_info = { |
| 1219 | .description = "smsc95xx USB 2.0 Ethernet", |
| 1220 | .bind = smsc95xx_bind, |
| 1221 | .unbind = smsc95xx_unbind, |
| 1222 | .link_reset = smsc95xx_link_reset, |
| 1223 | .reset = smsc95xx_reset, |
| 1224 | .rx_fixup = smsc95xx_rx_fixup, |
| 1225 | .tx_fixup = smsc95xx_tx_fixup, |
| 1226 | .status = smsc95xx_status, |
Paolo Pisati | 07d69d4 | 2012-04-23 04:05:20 +0000 | [diff] [blame] | 1227 | .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1228 | }; |
| 1229 | |
| 1230 | static const struct usb_device_id products[] = { |
| 1231 | { |
| 1232 | /* SMSC9500 USB Ethernet Device */ |
| 1233 | USB_DEVICE(0x0424, 0x9500), |
| 1234 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1235 | }, |
Steve Glendinning | 726474b | 2009-05-01 06:07:22 +0000 | [diff] [blame] | 1236 | { |
Steve Glendinning | 6f41d12 | 2009-09-22 05:13:02 +0000 | [diff] [blame] | 1237 | /* SMSC9505 USB Ethernet Device */ |
| 1238 | USB_DEVICE(0x0424, 0x9505), |
| 1239 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1240 | }, |
| 1241 | { |
| 1242 | /* SMSC9500A USB Ethernet Device */ |
| 1243 | USB_DEVICE(0x0424, 0x9E00), |
| 1244 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1245 | }, |
| 1246 | { |
| 1247 | /* SMSC9505A USB Ethernet Device */ |
| 1248 | USB_DEVICE(0x0424, 0x9E01), |
| 1249 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1250 | }, |
| 1251 | { |
Steve Glendinning | 726474b | 2009-05-01 06:07:22 +0000 | [diff] [blame] | 1252 | /* SMSC9512/9514 USB Hub & Ethernet Device */ |
| 1253 | USB_DEVICE(0x0424, 0xec00), |
| 1254 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1255 | }, |
Steve Glendinning | 6f41d12 | 2009-09-22 05:13:02 +0000 | [diff] [blame] | 1256 | { |
| 1257 | /* SMSC9500 USB Ethernet Device (SAL10) */ |
| 1258 | USB_DEVICE(0x0424, 0x9900), |
| 1259 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1260 | }, |
| 1261 | { |
| 1262 | /* SMSC9505 USB Ethernet Device (SAL10) */ |
| 1263 | USB_DEVICE(0x0424, 0x9901), |
| 1264 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1265 | }, |
| 1266 | { |
| 1267 | /* SMSC9500A USB Ethernet Device (SAL10) */ |
| 1268 | USB_DEVICE(0x0424, 0x9902), |
| 1269 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1270 | }, |
| 1271 | { |
| 1272 | /* SMSC9505A USB Ethernet Device (SAL10) */ |
| 1273 | USB_DEVICE(0x0424, 0x9903), |
| 1274 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1275 | }, |
| 1276 | { |
| 1277 | /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ |
| 1278 | USB_DEVICE(0x0424, 0x9904), |
| 1279 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1280 | }, |
| 1281 | { |
| 1282 | /* SMSC9500A USB Ethernet Device (HAL) */ |
| 1283 | USB_DEVICE(0x0424, 0x9905), |
| 1284 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1285 | }, |
| 1286 | { |
| 1287 | /* SMSC9505A USB Ethernet Device (HAL) */ |
| 1288 | USB_DEVICE(0x0424, 0x9906), |
| 1289 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1290 | }, |
| 1291 | { |
| 1292 | /* SMSC9500 USB Ethernet Device (Alternate ID) */ |
| 1293 | USB_DEVICE(0x0424, 0x9907), |
| 1294 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1295 | }, |
| 1296 | { |
| 1297 | /* SMSC9500A USB Ethernet Device (Alternate ID) */ |
| 1298 | USB_DEVICE(0x0424, 0x9908), |
| 1299 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1300 | }, |
| 1301 | { |
| 1302 | /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ |
| 1303 | USB_DEVICE(0x0424, 0x9909), |
| 1304 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1305 | }, |
Steve Glendinning | 88edaa4 | 2011-04-10 18:59:27 -0700 | [diff] [blame] | 1306 | { |
| 1307 | /* SMSC LAN9530 USB Ethernet Device */ |
| 1308 | USB_DEVICE(0x0424, 0x9530), |
| 1309 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1310 | }, |
| 1311 | { |
| 1312 | /* SMSC LAN9730 USB Ethernet Device */ |
| 1313 | USB_DEVICE(0x0424, 0x9730), |
| 1314 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1315 | }, |
| 1316 | { |
| 1317 | /* SMSC LAN89530 USB Ethernet Device */ |
| 1318 | USB_DEVICE(0x0424, 0x9E08), |
| 1319 | .driver_info = (unsigned long) &smsc95xx_info, |
| 1320 | }, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1321 | { }, /* END */ |
| 1322 | }; |
| 1323 | MODULE_DEVICE_TABLE(usb, products); |
| 1324 | |
| 1325 | static struct usb_driver smsc95xx_driver = { |
| 1326 | .name = "smsc95xx", |
| 1327 | .id_table = products, |
| 1328 | .probe = usbnet_probe, |
| 1329 | .suspend = usbnet_suspend, |
| 1330 | .resume = usbnet_resume, |
| 1331 | .disconnect = usbnet_disconnect, |
Sarah Sharp | e1f12eb | 2012-04-23 10:08:51 -0700 | [diff] [blame] | 1332 | .disable_hub_initiated_lpm = 1, |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1333 | }; |
| 1334 | |
Greg Kroah-Hartman | d632eb1 | 2011-11-18 09:44:20 -0800 | [diff] [blame] | 1335 | module_usb_driver(smsc95xx_driver); |
Steve Glendinning | 2f7ca80 | 2008-10-02 05:27:57 +0000 | [diff] [blame] | 1336 | |
| 1337 | MODULE_AUTHOR("Nancy Lin"); |
| 1338 | MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>"); |
| 1339 | MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); |
| 1340 | MODULE_LICENSE("GPL"); |