Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2004-2008 SMSC |
| 4 | * Copyright (C) 2005-2008 ARM |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | * |
| 20 | *************************************************************************** |
| 21 | * Rewritten, heavily based on smsc911x simple driver by SMSC. |
| 22 | * Partly uses io macros from smc91x.c by Nicolas Pitre |
| 23 | * |
| 24 | * Supported devices: |
| 25 | * LAN9115, LAN9116, LAN9117, LAN9118 |
| 26 | * LAN9215, LAN9216, LAN9217, LAN9218 |
| 27 | * LAN9210, LAN9211 |
| 28 | * LAN9220, LAN9221 |
David S. Miller | 1805b2f | 2011-10-24 18:18:09 -0400 | [diff] [blame] | 29 | * LAN89218 |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 30 | * |
| 31 | */ |
| 32 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 33 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 34 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 35 | #include <linux/crc32.h> |
| 36 | #include <linux/delay.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/etherdevice.h> |
| 39 | #include <linux/ethtool.h> |
| 40 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 41 | #include <linux/interrupt.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 42 | #include <linux/ioport.h> |
| 43 | #include <linux/kernel.h> |
| 44 | #include <linux/module.h> |
| 45 | #include <linux/netdevice.h> |
| 46 | #include <linux/platform_device.h> |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 47 | #include <linux/regulator/consumer.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 48 | #include <linux/sched.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 49 | #include <linux/timer.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 50 | #include <linux/bug.h> |
| 51 | #include <linux/bitops.h> |
| 52 | #include <linux/irq.h> |
| 53 | #include <linux/io.h> |
Magnus Damm | 833cc67 | 2009-04-27 21:32:16 +0000 | [diff] [blame] | 54 | #include <linux/swab.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 55 | #include <linux/phy.h> |
| 56 | #include <linux/smsc911x.h> |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 57 | #include <linux/device.h> |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 58 | #include <linux/of.h> |
| 59 | #include <linux/of_device.h> |
| 60 | #include <linux/of_gpio.h> |
| 61 | #include <linux/of_net.h> |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 62 | #include "smsc911x.h" |
| 63 | |
| 64 | #define SMSC_CHIPNAME "smsc911x" |
| 65 | #define SMSC_MDIONAME "smsc911x-mdio" |
| 66 | #define SMSC_DRV_VERSION "2008-10-21" |
| 67 | |
| 68 | MODULE_LICENSE("GPL"); |
| 69 | MODULE_VERSION(SMSC_DRV_VERSION); |
Vincent Stehlé | 62038e4 | 2010-09-26 18:50:05 -0700 | [diff] [blame] | 70 | MODULE_ALIAS("platform:smsc911x"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 71 | |
| 72 | #if USE_DEBUG > 0 |
| 73 | static int debug = 16; |
| 74 | #else |
| 75 | static int debug = 3; |
| 76 | #endif |
| 77 | |
| 78 | module_param(debug, int, 0); |
| 79 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
| 80 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 81 | struct smsc911x_data; |
| 82 | |
| 83 | struct smsc911x_ops { |
| 84 | u32 (*reg_read)(struct smsc911x_data *pdata, u32 reg); |
| 85 | void (*reg_write)(struct smsc911x_data *pdata, u32 reg, u32 val); |
| 86 | void (*rx_readfifo)(struct smsc911x_data *pdata, |
| 87 | unsigned int *buf, unsigned int wordcount); |
| 88 | void (*tx_writefifo)(struct smsc911x_data *pdata, |
| 89 | unsigned int *buf, unsigned int wordcount); |
| 90 | }; |
| 91 | |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 92 | #define SMSC911X_NUM_SUPPLIES 2 |
| 93 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 94 | struct smsc911x_data { |
| 95 | void __iomem *ioaddr; |
| 96 | |
| 97 | unsigned int idrev; |
| 98 | |
| 99 | /* used to decide which workarounds apply */ |
| 100 | unsigned int generation; |
| 101 | |
| 102 | /* device configuration (copied from platform_data during probe) */ |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 103 | struct smsc911x_platform_config config; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 104 | |
| 105 | /* This needs to be acquired before calling any of below: |
| 106 | * smsc911x_mac_read(), smsc911x_mac_write() |
| 107 | */ |
| 108 | spinlock_t mac_lock; |
| 109 | |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 110 | /* spinlock to ensure register accesses are serialised */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 111 | spinlock_t dev_lock; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 112 | |
| 113 | struct phy_device *phy_dev; |
| 114 | struct mii_bus *mii_bus; |
| 115 | int phy_irq[PHY_MAX_ADDR]; |
| 116 | unsigned int using_extphy; |
| 117 | int last_duplex; |
| 118 | int last_carrier; |
| 119 | |
| 120 | u32 msg_enable; |
| 121 | unsigned int gpio_setting; |
| 122 | unsigned int gpio_orig_setting; |
| 123 | struct net_device *dev; |
| 124 | struct napi_struct napi; |
| 125 | |
| 126 | unsigned int software_irq_signal; |
| 127 | |
| 128 | #ifdef USE_PHY_WORK_AROUND |
| 129 | #define MIN_PACKET_SIZE (64) |
| 130 | char loopback_tx_pkt[MIN_PACKET_SIZE]; |
| 131 | char loopback_rx_pkt[MIN_PACKET_SIZE]; |
| 132 | unsigned int resetcount; |
| 133 | #endif |
| 134 | |
| 135 | /* Members for Multicast filter workaround */ |
| 136 | unsigned int multicast_update_pending; |
| 137 | unsigned int set_bits_mask; |
| 138 | unsigned int clear_bits_mask; |
| 139 | unsigned int hashhi; |
| 140 | unsigned int hashlo; |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 141 | |
| 142 | /* register access functions */ |
| 143 | const struct smsc911x_ops *ops; |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 144 | |
| 145 | /* regulators */ |
| 146 | struct regulator_bulk_data supplies[SMSC911X_NUM_SUPPLIES]; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 147 | }; |
| 148 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 149 | /* Easy access to information */ |
| 150 | #define __smsc_shift(pdata, reg) ((reg) << ((pdata)->config.shift)) |
| 151 | |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 152 | static inline u32 __smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 153 | { |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 154 | if (pdata->config.flags & SMSC911X_USE_32BIT) |
| 155 | return readl(pdata->ioaddr + reg); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 156 | |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 157 | if (pdata->config.flags & SMSC911X_USE_16BIT) |
| 158 | return ((readw(pdata->ioaddr + reg) & 0xFFFF) | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 159 | ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16)); |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 160 | |
| 161 | BUG(); |
Steve Glendinning | 702403a | 2009-01-11 00:14:27 -0800 | [diff] [blame] | 162 | return 0; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 163 | } |
| 164 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 165 | static inline u32 |
| 166 | __smsc911x_reg_read_shift(struct smsc911x_data *pdata, u32 reg) |
| 167 | { |
| 168 | if (pdata->config.flags & SMSC911X_USE_32BIT) |
| 169 | return readl(pdata->ioaddr + __smsc_shift(pdata, reg)); |
| 170 | |
| 171 | if (pdata->config.flags & SMSC911X_USE_16BIT) |
| 172 | return (readw(pdata->ioaddr + |
| 173 | __smsc_shift(pdata, reg)) & 0xFFFF) | |
| 174 | ((readw(pdata->ioaddr + |
| 175 | __smsc_shift(pdata, reg + 2)) & 0xFFFF) << 16); |
| 176 | |
| 177 | BUG(); |
| 178 | return 0; |
| 179 | } |
| 180 | |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 181 | static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) |
| 182 | { |
| 183 | u32 data; |
| 184 | unsigned long flags; |
| 185 | |
| 186 | spin_lock_irqsave(&pdata->dev_lock, flags); |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 187 | data = pdata->ops->reg_read(pdata, reg); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 188 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
| 189 | |
| 190 | return data; |
| 191 | } |
| 192 | |
| 193 | static inline void __smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, |
| 194 | u32 val) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 195 | { |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 196 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
| 197 | writel(val, pdata->ioaddr + reg); |
| 198 | return; |
| 199 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 200 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 201 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 202 | writew(val & 0xFFFF, pdata->ioaddr + reg); |
| 203 | writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2); |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 204 | return; |
| 205 | } |
| 206 | |
| 207 | BUG(); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 208 | } |
| 209 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 210 | static inline void |
| 211 | __smsc911x_reg_write_shift(struct smsc911x_data *pdata, u32 reg, u32 val) |
| 212 | { |
| 213 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
| 214 | writel(val, pdata->ioaddr + __smsc_shift(pdata, reg)); |
| 215 | return; |
| 216 | } |
| 217 | |
| 218 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
| 219 | writew(val & 0xFFFF, |
| 220 | pdata->ioaddr + __smsc_shift(pdata, reg)); |
| 221 | writew((val >> 16) & 0xFFFF, |
| 222 | pdata->ioaddr + __smsc_shift(pdata, reg + 2)); |
| 223 | return; |
| 224 | } |
| 225 | |
| 226 | BUG(); |
| 227 | } |
| 228 | |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 229 | static inline void smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, |
| 230 | u32 val) |
| 231 | { |
| 232 | unsigned long flags; |
| 233 | |
| 234 | spin_lock_irqsave(&pdata->dev_lock, flags); |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 235 | pdata->ops->reg_write(pdata, reg, val); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 236 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
| 237 | } |
| 238 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 239 | /* Writes a packet to the TX_DATA_FIFO */ |
| 240 | static inline void |
| 241 | smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf, |
| 242 | unsigned int wordcount) |
| 243 | { |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 244 | unsigned long flags; |
| 245 | |
| 246 | spin_lock_irqsave(&pdata->dev_lock, flags); |
| 247 | |
Magnus Damm | 833cc67 | 2009-04-27 21:32:16 +0000 | [diff] [blame] | 248 | if (pdata->config.flags & SMSC911X_SWAP_FIFO) { |
| 249 | while (wordcount--) |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 250 | __smsc911x_reg_write(pdata, TX_DATA_FIFO, |
| 251 | swab32(*buf++)); |
| 252 | goto out; |
Magnus Damm | 833cc67 | 2009-04-27 21:32:16 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 255 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
Matthew Leach | 2925f6c | 2012-12-11 04:49:49 +0000 | [diff] [blame] | 256 | iowrite32_rep(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 257 | goto out; |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
| 261 | while (wordcount--) |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 262 | __smsc911x_reg_write(pdata, TX_DATA_FIFO, *buf++); |
| 263 | goto out; |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | BUG(); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 267 | out: |
| 268 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 269 | } |
| 270 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 271 | /* Writes a packet to the TX_DATA_FIFO - shifted version */ |
| 272 | static inline void |
| 273 | smsc911x_tx_writefifo_shift(struct smsc911x_data *pdata, unsigned int *buf, |
| 274 | unsigned int wordcount) |
| 275 | { |
| 276 | unsigned long flags; |
| 277 | |
| 278 | spin_lock_irqsave(&pdata->dev_lock, flags); |
| 279 | |
| 280 | if (pdata->config.flags & SMSC911X_SWAP_FIFO) { |
| 281 | while (wordcount--) |
| 282 | __smsc911x_reg_write_shift(pdata, TX_DATA_FIFO, |
| 283 | swab32(*buf++)); |
| 284 | goto out; |
| 285 | } |
| 286 | |
| 287 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
Matthew Leach | 2925f6c | 2012-12-11 04:49:49 +0000 | [diff] [blame] | 288 | iowrite32_rep(pdata->ioaddr + __smsc_shift(pdata, |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 289 | TX_DATA_FIFO), buf, wordcount); |
| 290 | goto out; |
| 291 | } |
| 292 | |
| 293 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
| 294 | while (wordcount--) |
| 295 | __smsc911x_reg_write_shift(pdata, |
| 296 | TX_DATA_FIFO, *buf++); |
| 297 | goto out; |
| 298 | } |
| 299 | |
| 300 | BUG(); |
| 301 | out: |
| 302 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
| 303 | } |
| 304 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 305 | /* Reads a packet out of the RX_DATA_FIFO */ |
| 306 | static inline void |
| 307 | smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf, |
| 308 | unsigned int wordcount) |
| 309 | { |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 310 | unsigned long flags; |
| 311 | |
| 312 | spin_lock_irqsave(&pdata->dev_lock, flags); |
| 313 | |
Magnus Damm | 833cc67 | 2009-04-27 21:32:16 +0000 | [diff] [blame] | 314 | if (pdata->config.flags & SMSC911X_SWAP_FIFO) { |
| 315 | while (wordcount--) |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 316 | *buf++ = swab32(__smsc911x_reg_read(pdata, |
| 317 | RX_DATA_FIFO)); |
| 318 | goto out; |
Magnus Damm | 833cc67 | 2009-04-27 21:32:16 +0000 | [diff] [blame] | 319 | } |
| 320 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 321 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
Matthew Leach | 2925f6c | 2012-12-11 04:49:49 +0000 | [diff] [blame] | 322 | ioread32_rep(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 323 | goto out; |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 324 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 325 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 326 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
| 327 | while (wordcount--) |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 328 | *buf++ = __smsc911x_reg_read(pdata, RX_DATA_FIFO); |
| 329 | goto out; |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | BUG(); |
Catalin Marinas | 492c5d9 | 2010-07-19 13:36:21 -0700 | [diff] [blame] | 333 | out: |
| 334 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 335 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 336 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 337 | /* Reads a packet out of the RX_DATA_FIFO - shifted version */ |
| 338 | static inline void |
| 339 | smsc911x_rx_readfifo_shift(struct smsc911x_data *pdata, unsigned int *buf, |
| 340 | unsigned int wordcount) |
| 341 | { |
| 342 | unsigned long flags; |
| 343 | |
| 344 | spin_lock_irqsave(&pdata->dev_lock, flags); |
| 345 | |
| 346 | if (pdata->config.flags & SMSC911X_SWAP_FIFO) { |
| 347 | while (wordcount--) |
| 348 | *buf++ = swab32(__smsc911x_reg_read_shift(pdata, |
| 349 | RX_DATA_FIFO)); |
| 350 | goto out; |
| 351 | } |
| 352 | |
| 353 | if (pdata->config.flags & SMSC911X_USE_32BIT) { |
Matthew Leach | 2925f6c | 2012-12-11 04:49:49 +0000 | [diff] [blame] | 354 | ioread32_rep(pdata->ioaddr + __smsc_shift(pdata, |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 355 | RX_DATA_FIFO), buf, wordcount); |
| 356 | goto out; |
| 357 | } |
| 358 | |
| 359 | if (pdata->config.flags & SMSC911X_USE_16BIT) { |
| 360 | while (wordcount--) |
| 361 | *buf++ = __smsc911x_reg_read_shift(pdata, |
| 362 | RX_DATA_FIFO); |
| 363 | goto out; |
| 364 | } |
| 365 | |
| 366 | BUG(); |
| 367 | out: |
| 368 | spin_unlock_irqrestore(&pdata->dev_lock, flags); |
| 369 | } |
| 370 | |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 371 | /* |
| 372 | * enable resources, currently just regulators. |
| 373 | */ |
| 374 | static int smsc911x_enable_resources(struct platform_device *pdev) |
| 375 | { |
| 376 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 377 | struct smsc911x_data *pdata = netdev_priv(ndev); |
| 378 | int ret = 0; |
| 379 | |
| 380 | ret = regulator_bulk_enable(ARRAY_SIZE(pdata->supplies), |
| 381 | pdata->supplies); |
| 382 | if (ret) |
| 383 | netdev_err(ndev, "failed to enable regulators %d\n", |
| 384 | ret); |
| 385 | return ret; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * disable resources, currently just regulators. |
| 390 | */ |
| 391 | static int smsc911x_disable_resources(struct platform_device *pdev) |
| 392 | { |
| 393 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 394 | struct smsc911x_data *pdata = netdev_priv(ndev); |
| 395 | int ret = 0; |
| 396 | |
| 397 | ret = regulator_bulk_disable(ARRAY_SIZE(pdata->supplies), |
| 398 | pdata->supplies); |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | /* |
| 403 | * Request resources, currently just regulators. |
| 404 | * |
| 405 | * The SMSC911x has two power pins: vddvario and vdd33a, in designs where |
| 406 | * these are not always-on we need to request regulators to be turned on |
| 407 | * before we can try to access the device registers. |
| 408 | */ |
| 409 | static int smsc911x_request_resources(struct platform_device *pdev) |
| 410 | { |
| 411 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 412 | struct smsc911x_data *pdata = netdev_priv(ndev); |
| 413 | int ret = 0; |
| 414 | |
| 415 | /* Request regulators */ |
| 416 | pdata->supplies[0].supply = "vdd33a"; |
| 417 | pdata->supplies[1].supply = "vddvario"; |
| 418 | ret = regulator_bulk_get(&pdev->dev, |
| 419 | ARRAY_SIZE(pdata->supplies), |
| 420 | pdata->supplies); |
| 421 | if (ret) |
| 422 | netdev_err(ndev, "couldn't get regulators %d\n", |
| 423 | ret); |
| 424 | return ret; |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Free resources, currently just regulators. |
| 429 | * |
| 430 | */ |
| 431 | static void smsc911x_free_resources(struct platform_device *pdev) |
| 432 | { |
| 433 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 434 | struct smsc911x_data *pdata = netdev_priv(ndev); |
| 435 | |
| 436 | /* Free regulators */ |
| 437 | regulator_bulk_free(ARRAY_SIZE(pdata->supplies), |
| 438 | pdata->supplies); |
| 439 | } |
| 440 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 441 | /* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read |
| 442 | * and smsc911x_mac_write, so assumes mac_lock is held */ |
| 443 | static int smsc911x_mac_complete(struct smsc911x_data *pdata) |
| 444 | { |
| 445 | int i; |
| 446 | u32 val; |
| 447 | |
| 448 | SMSC_ASSERT_MAC_LOCK(pdata); |
| 449 | |
| 450 | for (i = 0; i < 40; i++) { |
| 451 | val = smsc911x_reg_read(pdata, MAC_CSR_CMD); |
| 452 | if (!(val & MAC_CSR_CMD_CSR_BUSY_)) |
| 453 | return 0; |
| 454 | } |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 455 | SMSC_WARN(pdata, hw, "Timed out waiting for MAC not BUSY. " |
| 456 | "MAC_CSR_CMD: 0x%08X", val); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 457 | return -EIO; |
| 458 | } |
| 459 | |
| 460 | /* Fetches a MAC register value. Assumes mac_lock is acquired */ |
| 461 | static u32 smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset) |
| 462 | { |
| 463 | unsigned int temp; |
| 464 | |
| 465 | SMSC_ASSERT_MAC_LOCK(pdata); |
| 466 | |
| 467 | temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); |
| 468 | if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 469 | SMSC_WARN(pdata, hw, "MAC busy at entry"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 470 | return 0xFFFFFFFF; |
| 471 | } |
| 472 | |
| 473 | /* Send the MAC cmd */ |
| 474 | smsc911x_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) | |
| 475 | MAC_CSR_CMD_CSR_BUSY_ | MAC_CSR_CMD_R_NOT_W_)); |
| 476 | |
| 477 | /* Workaround for hardware read-after-write restriction */ |
| 478 | temp = smsc911x_reg_read(pdata, BYTE_TEST); |
| 479 | |
| 480 | /* Wait for the read to complete */ |
| 481 | if (likely(smsc911x_mac_complete(pdata) == 0)) |
| 482 | return smsc911x_reg_read(pdata, MAC_CSR_DATA); |
| 483 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 484 | SMSC_WARN(pdata, hw, "MAC busy after read"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 485 | return 0xFFFFFFFF; |
| 486 | } |
| 487 | |
| 488 | /* Set a mac register, mac_lock must be acquired before calling */ |
| 489 | static void smsc911x_mac_write(struct smsc911x_data *pdata, |
| 490 | unsigned int offset, u32 val) |
| 491 | { |
| 492 | unsigned int temp; |
| 493 | |
| 494 | SMSC_ASSERT_MAC_LOCK(pdata); |
| 495 | |
| 496 | temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); |
| 497 | if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 498 | SMSC_WARN(pdata, hw, |
| 499 | "smsc911x_mac_write failed, MAC busy at entry"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 500 | return; |
| 501 | } |
| 502 | |
| 503 | /* Send data to write */ |
| 504 | smsc911x_reg_write(pdata, MAC_CSR_DATA, val); |
| 505 | |
| 506 | /* Write the actual data */ |
| 507 | smsc911x_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) | |
| 508 | MAC_CSR_CMD_CSR_BUSY_)); |
| 509 | |
| 510 | /* Workaround for hardware read-after-write restriction */ |
| 511 | temp = smsc911x_reg_read(pdata, BYTE_TEST); |
| 512 | |
| 513 | /* Wait for the write to complete */ |
| 514 | if (likely(smsc911x_mac_complete(pdata) == 0)) |
| 515 | return; |
| 516 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 517 | SMSC_WARN(pdata, hw, "smsc911x_mac_write failed, MAC busy after write"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | /* Get a phy register */ |
| 521 | static int smsc911x_mii_read(struct mii_bus *bus, int phyaddr, int regidx) |
| 522 | { |
| 523 | struct smsc911x_data *pdata = (struct smsc911x_data *)bus->priv; |
| 524 | unsigned long flags; |
| 525 | unsigned int addr; |
| 526 | int i, reg; |
| 527 | |
| 528 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 529 | |
| 530 | /* Confirm MII not busy */ |
| 531 | if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 532 | SMSC_WARN(pdata, hw, "MII is busy in smsc911x_mii_read???"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 533 | reg = -EIO; |
| 534 | goto out; |
| 535 | } |
| 536 | |
| 537 | /* Set the address, index & direction (read from PHY) */ |
| 538 | addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6); |
| 539 | smsc911x_mac_write(pdata, MII_ACC, addr); |
| 540 | |
| 541 | /* Wait for read to complete w/ timeout */ |
| 542 | for (i = 0; i < 100; i++) |
| 543 | if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { |
| 544 | reg = smsc911x_mac_read(pdata, MII_DATA); |
| 545 | goto out; |
| 546 | } |
| 547 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 548 | SMSC_WARN(pdata, hw, "Timed out waiting for MII read to finish"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 549 | reg = -EIO; |
| 550 | |
| 551 | out: |
| 552 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 553 | return reg; |
| 554 | } |
| 555 | |
| 556 | /* Set a phy register */ |
| 557 | static int smsc911x_mii_write(struct mii_bus *bus, int phyaddr, int regidx, |
| 558 | u16 val) |
| 559 | { |
| 560 | struct smsc911x_data *pdata = (struct smsc911x_data *)bus->priv; |
| 561 | unsigned long flags; |
| 562 | unsigned int addr; |
| 563 | int i, reg; |
| 564 | |
| 565 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 566 | |
| 567 | /* Confirm MII not busy */ |
| 568 | if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 569 | SMSC_WARN(pdata, hw, "MII is busy in smsc911x_mii_write???"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 570 | reg = -EIO; |
| 571 | goto out; |
| 572 | } |
| 573 | |
| 574 | /* Put the data to write in the MAC */ |
| 575 | smsc911x_mac_write(pdata, MII_DATA, val); |
| 576 | |
| 577 | /* Set the address, index & direction (write to PHY) */ |
| 578 | addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6) | |
| 579 | MII_ACC_MII_WRITE_; |
| 580 | smsc911x_mac_write(pdata, MII_ACC, addr); |
| 581 | |
| 582 | /* Wait for write to complete w/ timeout */ |
| 583 | for (i = 0; i < 100; i++) |
| 584 | if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { |
| 585 | reg = 0; |
| 586 | goto out; |
| 587 | } |
| 588 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 589 | SMSC_WARN(pdata, hw, "Timed out waiting for MII write to finish"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 590 | reg = -EIO; |
| 591 | |
| 592 | out: |
| 593 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 594 | return reg; |
| 595 | } |
| 596 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 597 | /* Switch to external phy. Assumes tx and rx are stopped. */ |
| 598 | static void smsc911x_phy_enable_external(struct smsc911x_data *pdata) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 599 | { |
| 600 | unsigned int hwcfg = smsc911x_reg_read(pdata, HW_CFG); |
| 601 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 602 | /* Disable phy clocks to the MAC */ |
| 603 | hwcfg &= (~HW_CFG_PHY_CLK_SEL_); |
| 604 | hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; |
| 605 | smsc911x_reg_write(pdata, HW_CFG, hwcfg); |
| 606 | udelay(10); /* Enough time for clocks to stop */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 607 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 608 | /* Switch to external phy */ |
| 609 | hwcfg |= HW_CFG_EXT_PHY_EN_; |
| 610 | smsc911x_reg_write(pdata, HW_CFG, hwcfg); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 611 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 612 | /* Enable phy clocks to the MAC */ |
| 613 | hwcfg &= (~HW_CFG_PHY_CLK_SEL_); |
| 614 | hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_; |
| 615 | smsc911x_reg_write(pdata, HW_CFG, hwcfg); |
| 616 | udelay(10); /* Enough time for clocks to restart */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 617 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 618 | hwcfg |= HW_CFG_SMI_SEL_; |
| 619 | smsc911x_reg_write(pdata, HW_CFG, hwcfg); |
| 620 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 621 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 622 | /* Autodetects and enables external phy if present on supported chips. |
| 623 | * autodetection can be overridden by specifying SMSC911X_FORCE_INTERNAL_PHY |
| 624 | * or SMSC911X_FORCE_EXTERNAL_PHY in the platform_data flags. */ |
| 625 | static void smsc911x_phy_initialise_external(struct smsc911x_data *pdata) |
| 626 | { |
| 627 | unsigned int hwcfg = smsc911x_reg_read(pdata, HW_CFG); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 628 | |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 629 | if (pdata->config.flags & SMSC911X_FORCE_INTERNAL_PHY) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 630 | SMSC_TRACE(pdata, hw, "Forcing internal PHY"); |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 631 | pdata->using_extphy = 0; |
| 632 | } else if (pdata->config.flags & SMSC911X_FORCE_EXTERNAL_PHY) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 633 | SMSC_TRACE(pdata, hw, "Forcing external PHY"); |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 634 | smsc911x_phy_enable_external(pdata); |
| 635 | pdata->using_extphy = 1; |
| 636 | } else if (hwcfg & HW_CFG_EXT_PHY_DET_) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 637 | SMSC_TRACE(pdata, hw, |
| 638 | "HW_CFG EXT_PHY_DET set, using external PHY"); |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 639 | smsc911x_phy_enable_external(pdata); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 640 | pdata->using_extphy = 1; |
| 641 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 642 | SMSC_TRACE(pdata, hw, |
| 643 | "HW_CFG EXT_PHY_DET clear, using internal PHY"); |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 644 | pdata->using_extphy = 0; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 645 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | /* Fetches a tx status out of the status fifo */ |
| 649 | static unsigned int smsc911x_tx_get_txstatus(struct smsc911x_data *pdata) |
| 650 | { |
| 651 | unsigned int result = |
| 652 | smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_; |
| 653 | |
| 654 | if (result != 0) |
| 655 | result = smsc911x_reg_read(pdata, TX_STATUS_FIFO); |
| 656 | |
| 657 | return result; |
| 658 | } |
| 659 | |
| 660 | /* Fetches the next rx status */ |
| 661 | static unsigned int smsc911x_rx_get_rxstatus(struct smsc911x_data *pdata) |
| 662 | { |
| 663 | unsigned int result = |
| 664 | smsc911x_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_; |
| 665 | |
| 666 | if (result != 0) |
| 667 | result = smsc911x_reg_read(pdata, RX_STATUS_FIFO); |
| 668 | |
| 669 | return result; |
| 670 | } |
| 671 | |
| 672 | #ifdef USE_PHY_WORK_AROUND |
| 673 | static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata) |
| 674 | { |
| 675 | unsigned int tries; |
| 676 | u32 wrsz; |
| 677 | u32 rdsz; |
| 678 | ulong bufp; |
| 679 | |
| 680 | for (tries = 0; tries < 10; tries++) { |
| 681 | unsigned int txcmd_a; |
| 682 | unsigned int txcmd_b; |
| 683 | unsigned int status; |
| 684 | unsigned int pktlength; |
| 685 | unsigned int i; |
| 686 | |
| 687 | /* Zero-out rx packet memory */ |
| 688 | memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE); |
| 689 | |
| 690 | /* Write tx packet to 118 */ |
| 691 | txcmd_a = (u32)((ulong)pdata->loopback_tx_pkt & 0x03) << 16; |
| 692 | txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; |
| 693 | txcmd_a |= MIN_PACKET_SIZE; |
| 694 | |
| 695 | txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE; |
| 696 | |
| 697 | smsc911x_reg_write(pdata, TX_DATA_FIFO, txcmd_a); |
| 698 | smsc911x_reg_write(pdata, TX_DATA_FIFO, txcmd_b); |
| 699 | |
| 700 | bufp = (ulong)pdata->loopback_tx_pkt & (~0x3); |
| 701 | wrsz = MIN_PACKET_SIZE + 3; |
| 702 | wrsz += (u32)((ulong)pdata->loopback_tx_pkt & 0x3); |
| 703 | wrsz >>= 2; |
| 704 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 705 | pdata->ops->tx_writefifo(pdata, (unsigned int *)bufp, wrsz); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 706 | |
| 707 | /* Wait till transmit is done */ |
| 708 | i = 60; |
| 709 | do { |
| 710 | udelay(5); |
| 711 | status = smsc911x_tx_get_txstatus(pdata); |
| 712 | } while ((i--) && (!status)); |
| 713 | |
| 714 | if (!status) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 715 | SMSC_WARN(pdata, hw, |
| 716 | "Failed to transmit during loopback test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 717 | continue; |
| 718 | } |
| 719 | if (status & TX_STS_ES_) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 720 | SMSC_WARN(pdata, hw, |
| 721 | "Transmit encountered errors during loopback test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 722 | continue; |
| 723 | } |
| 724 | |
| 725 | /* Wait till receive is done */ |
| 726 | i = 60; |
| 727 | do { |
| 728 | udelay(5); |
| 729 | status = smsc911x_rx_get_rxstatus(pdata); |
| 730 | } while ((i--) && (!status)); |
| 731 | |
| 732 | if (!status) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 733 | SMSC_WARN(pdata, hw, |
| 734 | "Failed to receive during loopback test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 735 | continue; |
| 736 | } |
| 737 | if (status & RX_STS_ES_) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 738 | SMSC_WARN(pdata, hw, |
| 739 | "Receive encountered errors during loopback test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 740 | continue; |
| 741 | } |
| 742 | |
| 743 | pktlength = ((status & 0x3FFF0000UL) >> 16); |
| 744 | bufp = (ulong)pdata->loopback_rx_pkt; |
| 745 | rdsz = pktlength + 3; |
| 746 | rdsz += (u32)((ulong)pdata->loopback_rx_pkt & 0x3); |
| 747 | rdsz >>= 2; |
| 748 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 749 | pdata->ops->rx_readfifo(pdata, (unsigned int *)bufp, rdsz); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 750 | |
| 751 | if (pktlength != (MIN_PACKET_SIZE + 4)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 752 | SMSC_WARN(pdata, hw, "Unexpected packet size " |
| 753 | "during loop back test, size=%d, will retry", |
| 754 | pktlength); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 755 | } else { |
| 756 | unsigned int j; |
| 757 | int mismatch = 0; |
| 758 | for (j = 0; j < MIN_PACKET_SIZE; j++) { |
| 759 | if (pdata->loopback_tx_pkt[j] |
| 760 | != pdata->loopback_rx_pkt[j]) { |
| 761 | mismatch = 1; |
| 762 | break; |
| 763 | } |
| 764 | } |
| 765 | if (!mismatch) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 766 | SMSC_TRACE(pdata, hw, "Successfully verified " |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 767 | "loopback packet"); |
| 768 | return 0; |
| 769 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 770 | SMSC_WARN(pdata, hw, "Data mismatch " |
| 771 | "during loop back test, will retry"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 772 | } |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | return -EIO; |
| 777 | } |
| 778 | |
| 779 | static int smsc911x_phy_reset(struct smsc911x_data *pdata) |
| 780 | { |
| 781 | struct phy_device *phy_dev = pdata->phy_dev; |
| 782 | unsigned int temp; |
| 783 | unsigned int i = 100000; |
| 784 | |
| 785 | BUG_ON(!phy_dev); |
| 786 | BUG_ON(!phy_dev->bus); |
| 787 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 788 | SMSC_TRACE(pdata, hw, "Performing PHY BCR Reset"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 789 | smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, BMCR_RESET); |
| 790 | do { |
| 791 | msleep(1); |
| 792 | temp = smsc911x_mii_read(phy_dev->bus, phy_dev->addr, |
| 793 | MII_BMCR); |
| 794 | } while ((i--) && (temp & BMCR_RESET)); |
| 795 | |
| 796 | if (temp & BMCR_RESET) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 797 | SMSC_WARN(pdata, hw, "PHY reset failed to complete"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 798 | return -EIO; |
| 799 | } |
| 800 | /* Extra delay required because the phy may not be completed with |
| 801 | * its reset when BMCR_RESET is cleared. Specs say 256 uS is |
| 802 | * enough delay but using 1ms here to be safe */ |
| 803 | msleep(1); |
| 804 | |
| 805 | return 0; |
| 806 | } |
| 807 | |
| 808 | static int smsc911x_phy_loopbacktest(struct net_device *dev) |
| 809 | { |
| 810 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 811 | struct phy_device *phy_dev = pdata->phy_dev; |
| 812 | int result = -EIO; |
| 813 | unsigned int i, val; |
| 814 | unsigned long flags; |
| 815 | |
| 816 | /* Initialise tx packet using broadcast destination address */ |
| 817 | memset(pdata->loopback_tx_pkt, 0xff, ETH_ALEN); |
| 818 | |
| 819 | /* Use incrementing source address */ |
| 820 | for (i = 6; i < 12; i++) |
| 821 | pdata->loopback_tx_pkt[i] = (char)i; |
| 822 | |
| 823 | /* Set length type field */ |
| 824 | pdata->loopback_tx_pkt[12] = 0x00; |
| 825 | pdata->loopback_tx_pkt[13] = 0x00; |
| 826 | |
| 827 | for (i = 14; i < MIN_PACKET_SIZE; i++) |
| 828 | pdata->loopback_tx_pkt[i] = (char)i; |
| 829 | |
| 830 | val = smsc911x_reg_read(pdata, HW_CFG); |
| 831 | val &= HW_CFG_TX_FIF_SZ_; |
| 832 | val |= HW_CFG_SF_; |
| 833 | smsc911x_reg_write(pdata, HW_CFG, val); |
| 834 | |
| 835 | smsc911x_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_); |
| 836 | smsc911x_reg_write(pdata, RX_CFG, |
| 837 | (u32)((ulong)pdata->loopback_rx_pkt & 0x03) << 8); |
| 838 | |
| 839 | for (i = 0; i < 10; i++) { |
| 840 | /* Set PHY to 10/FD, no ANEG, and loopback mode */ |
| 841 | smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, |
| 842 | BMCR_LOOPBACK | BMCR_FULLDPLX); |
| 843 | |
| 844 | /* Enable MAC tx/rx, FD */ |
| 845 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 846 | smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_ |
| 847 | | MAC_CR_TXEN_ | MAC_CR_RXEN_); |
| 848 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 849 | |
| 850 | if (smsc911x_phy_check_loopbackpkt(pdata) == 0) { |
| 851 | result = 0; |
| 852 | break; |
| 853 | } |
| 854 | pdata->resetcount++; |
| 855 | |
| 856 | /* Disable MAC rx */ |
| 857 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 858 | smsc911x_mac_write(pdata, MAC_CR, 0); |
| 859 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 860 | |
| 861 | smsc911x_phy_reset(pdata); |
| 862 | } |
| 863 | |
| 864 | /* Disable MAC */ |
| 865 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 866 | smsc911x_mac_write(pdata, MAC_CR, 0); |
| 867 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 868 | |
| 869 | /* Cancel PHY loopback mode */ |
| 870 | smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, 0); |
| 871 | |
| 872 | smsc911x_reg_write(pdata, TX_CFG, 0); |
| 873 | smsc911x_reg_write(pdata, RX_CFG, 0); |
| 874 | |
| 875 | return result; |
| 876 | } |
| 877 | #endif /* USE_PHY_WORK_AROUND */ |
| 878 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 879 | static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata) |
| 880 | { |
| 881 | struct phy_device *phy_dev = pdata->phy_dev; |
| 882 | u32 afc = smsc911x_reg_read(pdata, AFC_CFG); |
| 883 | u32 flow; |
| 884 | unsigned long flags; |
| 885 | |
| 886 | if (phy_dev->duplex == DUPLEX_FULL) { |
| 887 | u16 lcladv = phy_read(phy_dev, MII_ADVERTISE); |
| 888 | u16 rmtadv = phy_read(phy_dev, MII_LPA); |
Steve Glendinning | bc02ff9 | 2008-12-16 02:00:48 -0800 | [diff] [blame] | 889 | u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 890 | |
| 891 | if (cap & FLOW_CTRL_RX) |
| 892 | flow = 0xFFFF0002; |
| 893 | else |
| 894 | flow = 0; |
| 895 | |
| 896 | if (cap & FLOW_CTRL_TX) |
| 897 | afc |= 0xF; |
| 898 | else |
| 899 | afc &= ~0xF; |
| 900 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 901 | SMSC_TRACE(pdata, hw, "rx pause %s, tx pause %s", |
| 902 | (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), |
| 903 | (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 904 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 905 | SMSC_TRACE(pdata, hw, "half duplex"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 906 | flow = 0; |
| 907 | afc |= 0xF; |
| 908 | } |
| 909 | |
| 910 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 911 | smsc911x_mac_write(pdata, FLOW, flow); |
| 912 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 913 | |
| 914 | smsc911x_reg_write(pdata, AFC_CFG, afc); |
| 915 | } |
| 916 | |
| 917 | /* Update link mode if anything has changed. Called periodically when the |
| 918 | * PHY is in polling mode, even if nothing has changed. */ |
| 919 | static void smsc911x_phy_adjust_link(struct net_device *dev) |
| 920 | { |
| 921 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 922 | struct phy_device *phy_dev = pdata->phy_dev; |
| 923 | unsigned long flags; |
| 924 | int carrier; |
| 925 | |
| 926 | if (phy_dev->duplex != pdata->last_duplex) { |
| 927 | unsigned int mac_cr; |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 928 | SMSC_TRACE(pdata, hw, "duplex state has changed"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 929 | |
| 930 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 931 | mac_cr = smsc911x_mac_read(pdata, MAC_CR); |
| 932 | if (phy_dev->duplex) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 933 | SMSC_TRACE(pdata, hw, |
| 934 | "configuring for full duplex mode"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 935 | mac_cr |= MAC_CR_FDPX_; |
| 936 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 937 | SMSC_TRACE(pdata, hw, |
| 938 | "configuring for half duplex mode"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 939 | mac_cr &= ~MAC_CR_FDPX_; |
| 940 | } |
| 941 | smsc911x_mac_write(pdata, MAC_CR, mac_cr); |
| 942 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 943 | |
| 944 | smsc911x_phy_update_flowcontrol(pdata); |
| 945 | pdata->last_duplex = phy_dev->duplex; |
| 946 | } |
| 947 | |
| 948 | carrier = netif_carrier_ok(dev); |
| 949 | if (carrier != pdata->last_carrier) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 950 | SMSC_TRACE(pdata, hw, "carrier state has changed"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 951 | if (carrier) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 952 | SMSC_TRACE(pdata, hw, "configuring for carrier OK"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 953 | if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) && |
| 954 | (!pdata->using_extphy)) { |
Thomas Weber | 8839316 | 2010-03-16 11:47:56 +0100 | [diff] [blame] | 955 | /* Restore original GPIO configuration */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 956 | pdata->gpio_setting = pdata->gpio_orig_setting; |
| 957 | smsc911x_reg_write(pdata, GPIO_CFG, |
| 958 | pdata->gpio_setting); |
| 959 | } |
| 960 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 961 | SMSC_TRACE(pdata, hw, "configuring for no carrier"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 962 | /* Check global setting that LED1 |
| 963 | * usage is 10/100 indicator */ |
| 964 | pdata->gpio_setting = smsc911x_reg_read(pdata, |
| 965 | GPIO_CFG); |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 966 | if ((pdata->gpio_setting & GPIO_CFG_LED1_EN_) && |
| 967 | (!pdata->using_extphy)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 968 | /* Force 10/100 LED off, after saving |
Thomas Weber | 8839316 | 2010-03-16 11:47:56 +0100 | [diff] [blame] | 969 | * original GPIO configuration */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 970 | pdata->gpio_orig_setting = pdata->gpio_setting; |
| 971 | |
| 972 | pdata->gpio_setting &= ~GPIO_CFG_LED1_EN_; |
| 973 | pdata->gpio_setting |= (GPIO_CFG_GPIOBUF0_ |
| 974 | | GPIO_CFG_GPIODIR0_ |
| 975 | | GPIO_CFG_GPIOD0_); |
| 976 | smsc911x_reg_write(pdata, GPIO_CFG, |
| 977 | pdata->gpio_setting); |
| 978 | } |
| 979 | } |
| 980 | pdata->last_carrier = carrier; |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | static int smsc911x_mii_probe(struct net_device *dev) |
| 985 | { |
| 986 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 987 | struct phy_device *phydev = NULL; |
kirjanov@gmail.com | e4a474f | 2010-02-16 21:54:58 +0000 | [diff] [blame] | 988 | int ret; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 989 | |
| 990 | /* find the first phy */ |
kirjanov@gmail.com | e4a474f | 2010-02-16 21:54:58 +0000 | [diff] [blame] | 991 | phydev = phy_find_first(pdata->mii_bus); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 992 | if (!phydev) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 993 | netdev_err(dev, "no PHY found\n"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 994 | return -ENODEV; |
| 995 | } |
| 996 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 997 | SMSC_TRACE(pdata, probe, "PHY: addr %d, phy_id 0x%08X", |
| 998 | phydev->addr, phydev->phy_id); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 999 | |
Florian Fainelli | f9a8f83 | 2013-01-14 00:52:52 +0000 | [diff] [blame] | 1000 | ret = phy_connect_direct(dev, phydev, &smsc911x_phy_adjust_link, |
| 1001 | pdata->config.phy_interface); |
kirjanov@gmail.com | e4a474f | 2010-02-16 21:54:58 +0000 | [diff] [blame] | 1002 | |
| 1003 | if (ret) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1004 | netdev_err(dev, "Could not attach to PHY\n"); |
kirjanov@gmail.com | e4a474f | 2010-02-16 21:54:58 +0000 | [diff] [blame] | 1005 | return ret; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1006 | } |
| 1007 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1008 | netdev_info(dev, |
| 1009 | "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", |
| 1010 | phydev->drv->name, dev_name(&phydev->dev), phydev->irq); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1011 | |
| 1012 | /* mask with MAC supported features */ |
| 1013 | phydev->supported &= (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
| 1014 | SUPPORTED_Asym_Pause); |
| 1015 | phydev->advertising = phydev->supported; |
| 1016 | |
| 1017 | pdata->phy_dev = phydev; |
| 1018 | pdata->last_duplex = -1; |
| 1019 | pdata->last_carrier = -1; |
| 1020 | |
| 1021 | #ifdef USE_PHY_WORK_AROUND |
| 1022 | if (smsc911x_phy_loopbacktest(dev) < 0) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1023 | SMSC_WARN(pdata, hw, "Failed Loop Back Test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1024 | return -ENODEV; |
| 1025 | } |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1026 | SMSC_TRACE(pdata, hw, "Passed Loop Back Test"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1027 | #endif /* USE_PHY_WORK_AROUND */ |
| 1028 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1029 | SMSC_TRACE(pdata, hw, "phy initialised successfully"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1030 | return 0; |
| 1031 | } |
| 1032 | |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 1033 | static int smsc911x_mii_init(struct platform_device *pdev, |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 1034 | struct net_device *dev) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1035 | { |
| 1036 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1037 | int err = -ENXIO, i; |
| 1038 | |
| 1039 | pdata->mii_bus = mdiobus_alloc(); |
| 1040 | if (!pdata->mii_bus) { |
| 1041 | err = -ENOMEM; |
| 1042 | goto err_out_1; |
| 1043 | } |
| 1044 | |
| 1045 | pdata->mii_bus->name = SMSC_MDIONAME; |
Florian Fainelli | 09ef078 | 2012-01-09 23:59:19 +0000 | [diff] [blame] | 1046 | snprintf(pdata->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", |
| 1047 | pdev->name, pdev->id); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1048 | pdata->mii_bus->priv = pdata; |
| 1049 | pdata->mii_bus->read = smsc911x_mii_read; |
| 1050 | pdata->mii_bus->write = smsc911x_mii_write; |
| 1051 | pdata->mii_bus->irq = pdata->phy_irq; |
| 1052 | for (i = 0; i < PHY_MAX_ADDR; ++i) |
| 1053 | pdata->mii_bus->irq[i] = PHY_POLL; |
| 1054 | |
| 1055 | pdata->mii_bus->parent = &pdev->dev; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1056 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1057 | switch (pdata->idrev & 0xFFFF0000) { |
| 1058 | case 0x01170000: |
| 1059 | case 0x01150000: |
| 1060 | case 0x117A0000: |
| 1061 | case 0x115A0000: |
| 1062 | /* External PHY supported, try to autodetect */ |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 1063 | smsc911x_phy_initialise_external(pdata); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1064 | break; |
| 1065 | default: |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1066 | SMSC_TRACE(pdata, hw, "External PHY is not supported, " |
| 1067 | "using internal PHY"); |
Steve Glendinning | d23f028 | 2009-01-27 06:51:11 +0000 | [diff] [blame] | 1068 | pdata->using_extphy = 0; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1069 | break; |
| 1070 | } |
| 1071 | |
| 1072 | if (!pdata->using_extphy) { |
| 1073 | /* Mask all PHYs except ID 1 (internal) */ |
| 1074 | pdata->mii_bus->phy_mask = ~(1 << 1); |
| 1075 | } |
| 1076 | |
| 1077 | if (mdiobus_register(pdata->mii_bus)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1078 | SMSC_WARN(pdata, probe, "Error registering mii bus"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1079 | goto err_out_free_bus_2; |
| 1080 | } |
| 1081 | |
| 1082 | if (smsc911x_mii_probe(dev) < 0) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1083 | SMSC_WARN(pdata, probe, "Error registering mii bus"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1084 | goto err_out_unregister_bus_3; |
| 1085 | } |
| 1086 | |
| 1087 | return 0; |
| 1088 | |
| 1089 | err_out_unregister_bus_3: |
| 1090 | mdiobus_unregister(pdata->mii_bus); |
| 1091 | err_out_free_bus_2: |
| 1092 | mdiobus_free(pdata->mii_bus); |
| 1093 | err_out_1: |
| 1094 | return err; |
| 1095 | } |
| 1096 | |
| 1097 | /* Gets the number of tx statuses in the fifo */ |
| 1098 | static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data *pdata) |
| 1099 | { |
| 1100 | return (smsc911x_reg_read(pdata, TX_FIFO_INF) |
| 1101 | & TX_FIFO_INF_TSUSED_) >> 16; |
| 1102 | } |
| 1103 | |
| 1104 | /* Reads tx statuses and increments counters where necessary */ |
| 1105 | static void smsc911x_tx_update_txcounters(struct net_device *dev) |
| 1106 | { |
| 1107 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1108 | unsigned int tx_stat; |
| 1109 | |
| 1110 | while ((tx_stat = smsc911x_tx_get_txstatus(pdata)) != 0) { |
| 1111 | if (unlikely(tx_stat & 0x80000000)) { |
| 1112 | /* In this driver the packet tag is used as the packet |
| 1113 | * length. Since a packet length can never reach the |
| 1114 | * size of 0x8000, this bit is reserved. It is worth |
| 1115 | * noting that the "reserved bit" in the warning above |
| 1116 | * does not reference a hardware defined reserved bit |
| 1117 | * but rather a driver defined one. |
| 1118 | */ |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1119 | SMSC_WARN(pdata, hw, "Packet tag reserved bit is high"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1120 | } else { |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1121 | if (unlikely(tx_stat & TX_STS_ES_)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1122 | dev->stats.tx_errors++; |
| 1123 | } else { |
| 1124 | dev->stats.tx_packets++; |
| 1125 | dev->stats.tx_bytes += (tx_stat >> 16); |
| 1126 | } |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1127 | if (unlikely(tx_stat & TX_STS_EXCESS_COL_)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1128 | dev->stats.collisions += 16; |
| 1129 | dev->stats.tx_aborted_errors += 1; |
| 1130 | } else { |
| 1131 | dev->stats.collisions += |
| 1132 | ((tx_stat >> 3) & 0xF); |
| 1133 | } |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1134 | if (unlikely(tx_stat & TX_STS_LOST_CARRIER_)) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1135 | dev->stats.tx_carrier_errors += 1; |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1136 | if (unlikely(tx_stat & TX_STS_LATE_COL_)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1137 | dev->stats.collisions++; |
| 1138 | dev->stats.tx_aborted_errors++; |
| 1139 | } |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | /* Increments the Rx error counters */ |
| 1145 | static void |
| 1146 | smsc911x_rx_counterrors(struct net_device *dev, unsigned int rxstat) |
| 1147 | { |
| 1148 | int crc_err = 0; |
| 1149 | |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1150 | if (unlikely(rxstat & RX_STS_ES_)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1151 | dev->stats.rx_errors++; |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1152 | if (unlikely(rxstat & RX_STS_CRC_ERR_)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1153 | dev->stats.rx_crc_errors++; |
| 1154 | crc_err = 1; |
| 1155 | } |
| 1156 | } |
| 1157 | if (likely(!crc_err)) { |
Steve Glendinning | 785b6f9 | 2009-03-19 00:24:44 +0000 | [diff] [blame] | 1158 | if (unlikely((rxstat & RX_STS_FRAME_TYPE_) && |
| 1159 | (rxstat & RX_STS_LENGTH_ERR_))) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1160 | dev->stats.rx_length_errors++; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1161 | if (rxstat & RX_STS_MCAST_) |
| 1162 | dev->stats.multicast++; |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | /* Quickly dumps bad packets */ |
| 1167 | static void |
Will Deacon | 3c5e979 | 2012-04-12 05:54:09 +0000 | [diff] [blame] | 1168 | smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktwords) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1169 | { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1170 | if (likely(pktwords >= 4)) { |
| 1171 | unsigned int timeout = 500; |
| 1172 | unsigned int val; |
| 1173 | smsc911x_reg_write(pdata, RX_DP_CTRL, RX_DP_CTRL_RX_FFWD_); |
| 1174 | do { |
| 1175 | udelay(1); |
| 1176 | val = smsc911x_reg_read(pdata, RX_DP_CTRL); |
Steve Glendinning | 8dacd54 | 2009-03-04 07:33:24 +0000 | [diff] [blame] | 1177 | } while ((val & RX_DP_CTRL_RX_FFWD_) && --timeout); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1178 | |
| 1179 | if (unlikely(timeout == 0)) |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1180 | SMSC_WARN(pdata, hw, "Timed out waiting for " |
| 1181 | "RX FFWD to finish, RX_DP_CTRL: 0x%08X", val); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1182 | } else { |
| 1183 | unsigned int temp; |
| 1184 | while (pktwords--) |
| 1185 | temp = smsc911x_reg_read(pdata, RX_DATA_FIFO); |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | /* NAPI poll function */ |
| 1190 | static int smsc911x_poll(struct napi_struct *napi, int budget) |
| 1191 | { |
| 1192 | struct smsc911x_data *pdata = |
| 1193 | container_of(napi, struct smsc911x_data, napi); |
| 1194 | struct net_device *dev = pdata->dev; |
| 1195 | int npackets = 0; |
| 1196 | |
Sriram | f88c5b9 | 2009-11-12 02:14:38 +0000 | [diff] [blame] | 1197 | while (npackets < budget) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1198 | unsigned int pktlength; |
| 1199 | unsigned int pktwords; |
| 1200 | struct sk_buff *skb; |
| 1201 | unsigned int rxstat = smsc911x_rx_get_rxstatus(pdata); |
| 1202 | |
| 1203 | if (!rxstat) { |
| 1204 | unsigned int temp; |
| 1205 | /* We processed all packets available. Tell NAPI it can |
| 1206 | * stop polling then re-enable rx interrupts */ |
| 1207 | smsc911x_reg_write(pdata, INT_STS, INT_STS_RSFL_); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1208 | napi_complete(napi); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1209 | temp = smsc911x_reg_read(pdata, INT_EN); |
| 1210 | temp |= INT_EN_RSFL_EN_; |
| 1211 | smsc911x_reg_write(pdata, INT_EN, temp); |
| 1212 | break; |
| 1213 | } |
| 1214 | |
| 1215 | /* Count packet for NAPI scheduling, even if it has an error. |
| 1216 | * Error packets still require cycles to discard */ |
| 1217 | npackets++; |
| 1218 | |
| 1219 | pktlength = ((rxstat & 0x3FFF0000) >> 16); |
| 1220 | pktwords = (pktlength + NET_IP_ALIGN + 3) >> 2; |
| 1221 | smsc911x_rx_counterrors(dev, rxstat); |
| 1222 | |
| 1223 | if (unlikely(rxstat & RX_STS_ES_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1224 | SMSC_WARN(pdata, rx_err, |
| 1225 | "Discarding packet with error bit set"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1226 | /* Packet has an error, discard it and continue with |
| 1227 | * the next */ |
| 1228 | smsc911x_rx_fastforward(pdata, pktwords); |
| 1229 | dev->stats.rx_dropped++; |
| 1230 | continue; |
| 1231 | } |
| 1232 | |
Will Deacon | 3c5e979 | 2012-04-12 05:54:09 +0000 | [diff] [blame] | 1233 | skb = netdev_alloc_skb(dev, pktwords << 2); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1234 | if (unlikely(!skb)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1235 | SMSC_WARN(pdata, rx_err, |
| 1236 | "Unable to allocate skb for rx packet"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1237 | /* Drop the packet and stop this polling iteration */ |
| 1238 | smsc911x_rx_fastforward(pdata, pktwords); |
| 1239 | dev->stats.rx_dropped++; |
| 1240 | break; |
| 1241 | } |
| 1242 | |
Will Deacon | 3c5e979 | 2012-04-12 05:54:09 +0000 | [diff] [blame] | 1243 | pdata->ops->rx_readfifo(pdata, |
| 1244 | (unsigned int *)skb->data, pktwords); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1245 | |
| 1246 | /* Align IP on 16B boundary */ |
| 1247 | skb_reserve(skb, NET_IP_ALIGN); |
| 1248 | skb_put(skb, pktlength - 4); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1249 | skb->protocol = eth_type_trans(skb, dev); |
Eric Dumazet | bc8acf2 | 2010-09-02 13:07:41 -0700 | [diff] [blame] | 1250 | skb_checksum_none_assert(skb); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1251 | netif_receive_skb(skb); |
| 1252 | |
| 1253 | /* Update counters */ |
| 1254 | dev->stats.rx_packets++; |
| 1255 | dev->stats.rx_bytes += (pktlength - 4); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1256 | } |
| 1257 | |
| 1258 | /* Return total received packets */ |
| 1259 | return npackets; |
| 1260 | } |
| 1261 | |
| 1262 | /* Returns hash bit number for given MAC address |
| 1263 | * Example: |
| 1264 | * 01 00 5E 00 00 01 -> returns bit number 31 */ |
| 1265 | static unsigned int smsc911x_hash(char addr[ETH_ALEN]) |
| 1266 | { |
| 1267 | return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; |
| 1268 | } |
| 1269 | |
| 1270 | static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata) |
| 1271 | { |
| 1272 | /* Performs the multicast & mac_cr update. This is called when |
| 1273 | * safe on the current hardware, and with the mac_lock held */ |
| 1274 | unsigned int mac_cr; |
| 1275 | |
| 1276 | SMSC_ASSERT_MAC_LOCK(pdata); |
| 1277 | |
| 1278 | mac_cr = smsc911x_mac_read(pdata, MAC_CR); |
| 1279 | mac_cr |= pdata->set_bits_mask; |
| 1280 | mac_cr &= ~(pdata->clear_bits_mask); |
| 1281 | smsc911x_mac_write(pdata, MAC_CR, mac_cr); |
| 1282 | smsc911x_mac_write(pdata, HASHH, pdata->hashhi); |
| 1283 | smsc911x_mac_write(pdata, HASHL, pdata->hashlo); |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1284 | SMSC_TRACE(pdata, hw, "maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X", |
| 1285 | mac_cr, pdata->hashhi, pdata->hashlo); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data *pdata) |
| 1289 | { |
| 1290 | unsigned int mac_cr; |
| 1291 | |
| 1292 | /* This function is only called for older LAN911x devices |
| 1293 | * (revA or revB), where MAC_CR, HASHH and HASHL should not |
| 1294 | * be modified during Rx - newer devices immediately update the |
| 1295 | * registers. |
| 1296 | * |
| 1297 | * This is called from interrupt context */ |
| 1298 | |
| 1299 | spin_lock(&pdata->mac_lock); |
| 1300 | |
| 1301 | /* Check Rx has stopped */ |
| 1302 | if (smsc911x_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_) |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1303 | SMSC_WARN(pdata, drv, "Rx not stopped"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1304 | |
| 1305 | /* Perform the update - safe to do now Rx has stopped */ |
| 1306 | smsc911x_rx_multicast_update(pdata); |
| 1307 | |
| 1308 | /* Re-enable Rx */ |
| 1309 | mac_cr = smsc911x_mac_read(pdata, MAC_CR); |
| 1310 | mac_cr |= MAC_CR_RXEN_; |
| 1311 | smsc911x_mac_write(pdata, MAC_CR, mac_cr); |
| 1312 | |
| 1313 | pdata->multicast_update_pending = 0; |
| 1314 | |
| 1315 | spin_unlock(&pdata->mac_lock); |
| 1316 | } |
| 1317 | |
Javier Martinez Canillas | 6386994 | 2012-01-03 13:36:19 +0000 | [diff] [blame] | 1318 | static int smsc911x_phy_disable_energy_detect(struct smsc911x_data *pdata) |
| 1319 | { |
| 1320 | int rc = 0; |
| 1321 | |
| 1322 | if (!pdata->phy_dev) |
| 1323 | return rc; |
| 1324 | |
| 1325 | rc = phy_read(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS); |
| 1326 | |
| 1327 | if (rc < 0) { |
| 1328 | SMSC_WARN(pdata, drv, "Failed reading PHY control reg"); |
| 1329 | return rc; |
| 1330 | } |
| 1331 | |
| 1332 | /* |
| 1333 | * If energy is detected the PHY is already awake so is not necessary |
| 1334 | * to disable the energy detect power-down mode. |
| 1335 | */ |
| 1336 | if ((rc & MII_LAN83C185_EDPWRDOWN) && |
| 1337 | !(rc & MII_LAN83C185_ENERGYON)) { |
| 1338 | /* Disable energy detect mode for this SMSC Transceivers */ |
| 1339 | rc = phy_write(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS, |
| 1340 | rc & (~MII_LAN83C185_EDPWRDOWN)); |
| 1341 | |
| 1342 | if (rc < 0) { |
| 1343 | SMSC_WARN(pdata, drv, "Failed writing PHY control reg"); |
| 1344 | return rc; |
| 1345 | } |
| 1346 | |
| 1347 | mdelay(1); |
| 1348 | } |
| 1349 | |
| 1350 | return 0; |
| 1351 | } |
| 1352 | |
| 1353 | static int smsc911x_phy_enable_energy_detect(struct smsc911x_data *pdata) |
| 1354 | { |
| 1355 | int rc = 0; |
| 1356 | |
| 1357 | if (!pdata->phy_dev) |
| 1358 | return rc; |
| 1359 | |
| 1360 | rc = phy_read(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS); |
| 1361 | |
| 1362 | if (rc < 0) { |
| 1363 | SMSC_WARN(pdata, drv, "Failed reading PHY control reg"); |
| 1364 | return rc; |
| 1365 | } |
| 1366 | |
| 1367 | /* Only enable if energy detect mode is already disabled */ |
| 1368 | if (!(rc & MII_LAN83C185_EDPWRDOWN)) { |
| 1369 | mdelay(100); |
| 1370 | /* Enable energy detect mode for this SMSC Transceivers */ |
| 1371 | rc = phy_write(pdata->phy_dev, MII_LAN83C185_CTRL_STATUS, |
| 1372 | rc | MII_LAN83C185_EDPWRDOWN); |
| 1373 | |
| 1374 | if (rc < 0) { |
| 1375 | SMSC_WARN(pdata, drv, "Failed writing PHY control reg"); |
| 1376 | return rc; |
| 1377 | } |
| 1378 | |
| 1379 | mdelay(1); |
| 1380 | } |
| 1381 | return 0; |
| 1382 | } |
| 1383 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1384 | static int smsc911x_soft_reset(struct smsc911x_data *pdata) |
| 1385 | { |
| 1386 | unsigned int timeout; |
| 1387 | unsigned int temp; |
Javier Martinez Canillas | 6386994 | 2012-01-03 13:36:19 +0000 | [diff] [blame] | 1388 | int ret; |
| 1389 | |
| 1390 | /* |
| 1391 | * LAN9210/LAN9211/LAN9220/LAN9221 chips have an internal PHY that |
| 1392 | * are initialized in a Energy Detect Power-Down mode that prevents |
| 1393 | * the MAC chip to be software reseted. So we have to wakeup the PHY |
| 1394 | * before. |
| 1395 | */ |
| 1396 | if (pdata->generation == 4) { |
| 1397 | ret = smsc911x_phy_disable_energy_detect(pdata); |
| 1398 | |
| 1399 | if (ret) { |
| 1400 | SMSC_WARN(pdata, drv, "Failed to wakeup the PHY chip"); |
| 1401 | return ret; |
| 1402 | } |
| 1403 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1404 | |
| 1405 | /* Reset the LAN911x */ |
| 1406 | smsc911x_reg_write(pdata, HW_CFG, HW_CFG_SRST_); |
| 1407 | timeout = 10; |
| 1408 | do { |
| 1409 | udelay(10); |
| 1410 | temp = smsc911x_reg_read(pdata, HW_CFG); |
| 1411 | } while ((--timeout) && (temp & HW_CFG_SRST_)); |
| 1412 | |
| 1413 | if (unlikely(temp & HW_CFG_SRST_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1414 | SMSC_WARN(pdata, drv, "Failed to complete reset"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1415 | return -EIO; |
| 1416 | } |
Javier Martinez Canillas | 6386994 | 2012-01-03 13:36:19 +0000 | [diff] [blame] | 1417 | |
| 1418 | if (pdata->generation == 4) { |
| 1419 | ret = smsc911x_phy_enable_energy_detect(pdata); |
| 1420 | |
| 1421 | if (ret) { |
| 1422 | SMSC_WARN(pdata, drv, "Failed to wakeup the PHY chip"); |
| 1423 | return ret; |
| 1424 | } |
| 1425 | } |
| 1426 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1427 | return 0; |
| 1428 | } |
| 1429 | |
| 1430 | /* Sets the device MAC address to dev_addr, called with mac_lock held */ |
| 1431 | static void |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 1432 | smsc911x_set_hw_mac_address(struct smsc911x_data *pdata, u8 dev_addr[6]) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1433 | { |
| 1434 | u32 mac_high16 = (dev_addr[5] << 8) | dev_addr[4]; |
| 1435 | u32 mac_low32 = (dev_addr[3] << 24) | (dev_addr[2] << 16) | |
| 1436 | (dev_addr[1] << 8) | dev_addr[0]; |
| 1437 | |
| 1438 | SMSC_ASSERT_MAC_LOCK(pdata); |
| 1439 | |
| 1440 | smsc911x_mac_write(pdata, ADDRH, mac_high16); |
| 1441 | smsc911x_mac_write(pdata, ADDRL, mac_low32); |
| 1442 | } |
| 1443 | |
Matthias Brugger | 8e27628 | 2012-06-22 01:10:15 +0000 | [diff] [blame] | 1444 | static void smsc911x_disable_irq_chip(struct net_device *dev) |
| 1445 | { |
| 1446 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1447 | |
| 1448 | smsc911x_reg_write(pdata, INT_EN, 0); |
| 1449 | smsc911x_reg_write(pdata, INT_STS, 0xFFFFFFFF); |
| 1450 | } |
| 1451 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1452 | static int smsc911x_open(struct net_device *dev) |
| 1453 | { |
| 1454 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1455 | unsigned int timeout; |
| 1456 | unsigned int temp; |
| 1457 | unsigned int intcfg; |
| 1458 | |
| 1459 | /* if the phy is not yet registered, retry later*/ |
| 1460 | if (!pdata->phy_dev) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1461 | SMSC_WARN(pdata, hw, "phy_dev is NULL"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1462 | return -EAGAIN; |
| 1463 | } |
| 1464 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1465 | /* Reset the LAN911x */ |
| 1466 | if (smsc911x_soft_reset(pdata)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1467 | SMSC_WARN(pdata, hw, "soft reset failed"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1468 | return -EIO; |
| 1469 | } |
| 1470 | |
| 1471 | smsc911x_reg_write(pdata, HW_CFG, 0x00050000); |
| 1472 | smsc911x_reg_write(pdata, AFC_CFG, 0x006E3740); |
| 1473 | |
Göran Weinholt | f277e65 | 2011-03-02 04:07:21 +0000 | [diff] [blame] | 1474 | /* Increase the legal frame size of VLAN tagged frames to 1522 bytes */ |
| 1475 | spin_lock_irq(&pdata->mac_lock); |
| 1476 | smsc911x_mac_write(pdata, VLAN1, ETH_P_8021Q); |
| 1477 | spin_unlock_irq(&pdata->mac_lock); |
| 1478 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1479 | /* Make sure EEPROM has finished loading before setting GPIO_CFG */ |
| 1480 | timeout = 50; |
Steve Glendinning | f7efb6c | 2009-03-04 07:33:25 +0000 | [diff] [blame] | 1481 | while ((smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) && |
| 1482 | --timeout) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1483 | udelay(10); |
| 1484 | } |
| 1485 | |
| 1486 | if (unlikely(timeout == 0)) |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1487 | SMSC_WARN(pdata, ifup, |
| 1488 | "Timed out waiting for EEPROM busy bit to clear"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1489 | |
| 1490 | smsc911x_reg_write(pdata, GPIO_CFG, 0x70070000); |
| 1491 | |
| 1492 | /* The soft reset above cleared the device's MAC address, |
| 1493 | * restore it from local copy (set in probe) */ |
| 1494 | spin_lock_irq(&pdata->mac_lock); |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 1495 | smsc911x_set_hw_mac_address(pdata, dev->dev_addr); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1496 | spin_unlock_irq(&pdata->mac_lock); |
| 1497 | |
| 1498 | /* Initialise irqs, but leave all sources disabled */ |
Matthias Brugger | 8e27628 | 2012-06-22 01:10:15 +0000 | [diff] [blame] | 1499 | smsc911x_disable_irq_chip(dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1500 | |
| 1501 | /* Set interrupt deassertion to 100uS */ |
| 1502 | intcfg = ((10 << 24) | INT_CFG_IRQ_EN_); |
| 1503 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 1504 | if (pdata->config.irq_polarity) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1505 | SMSC_TRACE(pdata, ifup, "irq polarity: active high"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1506 | intcfg |= INT_CFG_IRQ_POL_; |
| 1507 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1508 | SMSC_TRACE(pdata, ifup, "irq polarity: active low"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1509 | } |
| 1510 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 1511 | if (pdata->config.irq_type) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1512 | SMSC_TRACE(pdata, ifup, "irq type: push-pull"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1513 | intcfg |= INT_CFG_IRQ_TYPE_; |
| 1514 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1515 | SMSC_TRACE(pdata, ifup, "irq type: open drain"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1516 | } |
| 1517 | |
| 1518 | smsc911x_reg_write(pdata, INT_CFG, intcfg); |
| 1519 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1520 | SMSC_TRACE(pdata, ifup, "Testing irq handler using IRQ %d", dev->irq); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1521 | pdata->software_irq_signal = 0; |
| 1522 | smp_wmb(); |
| 1523 | |
| 1524 | temp = smsc911x_reg_read(pdata, INT_EN); |
| 1525 | temp |= INT_EN_SW_INT_EN_; |
| 1526 | smsc911x_reg_write(pdata, INT_EN, temp); |
| 1527 | |
| 1528 | timeout = 1000; |
| 1529 | while (timeout--) { |
| 1530 | if (pdata->software_irq_signal) |
| 1531 | break; |
| 1532 | msleep(1); |
| 1533 | } |
| 1534 | |
| 1535 | if (!pdata->software_irq_signal) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1536 | netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", |
| 1537 | dev->irq); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1538 | return -ENODEV; |
| 1539 | } |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1540 | SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", |
| 1541 | dev->irq); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1542 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1543 | netdev_info(dev, "SMSC911x/921x identified at %#08lx, IRQ: %d\n", |
| 1544 | (unsigned long)pdata->ioaddr, dev->irq); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1545 | |
Steve Glendinning | 44c1d6f | 2009-03-18 23:37:18 -0700 | [diff] [blame] | 1546 | /* Reset the last known duplex and carrier */ |
| 1547 | pdata->last_duplex = -1; |
| 1548 | pdata->last_carrier = -1; |
| 1549 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1550 | /* Bring the PHY up */ |
| 1551 | phy_start(pdata->phy_dev); |
| 1552 | |
| 1553 | temp = smsc911x_reg_read(pdata, HW_CFG); |
| 1554 | /* Preserve TX FIFO size and external PHY configuration */ |
| 1555 | temp &= (HW_CFG_TX_FIF_SZ_|0x00000FFF); |
| 1556 | temp |= HW_CFG_SF_; |
| 1557 | smsc911x_reg_write(pdata, HW_CFG, temp); |
| 1558 | |
| 1559 | temp = smsc911x_reg_read(pdata, FIFO_INT); |
| 1560 | temp |= FIFO_INT_TX_AVAIL_LEVEL_; |
| 1561 | temp &= ~(FIFO_INT_RX_STS_LEVEL_); |
| 1562 | smsc911x_reg_write(pdata, FIFO_INT, temp); |
| 1563 | |
| 1564 | /* set RX Data offset to 2 bytes for alignment */ |
Will Deacon | 3c5e979 | 2012-04-12 05:54:09 +0000 | [diff] [blame] | 1565 | smsc911x_reg_write(pdata, RX_CFG, (NET_IP_ALIGN << 8)); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1566 | |
| 1567 | /* enable NAPI polling before enabling RX interrupts */ |
| 1568 | napi_enable(&pdata->napi); |
| 1569 | |
| 1570 | temp = smsc911x_reg_read(pdata, INT_EN); |
Steve Glendinning | 1373c0f | 2009-01-26 21:33:16 -0800 | [diff] [blame] | 1571 | temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_RXSTOP_INT_EN_); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1572 | smsc911x_reg_write(pdata, INT_EN, temp); |
| 1573 | |
| 1574 | spin_lock_irq(&pdata->mac_lock); |
| 1575 | temp = smsc911x_mac_read(pdata, MAC_CR); |
| 1576 | temp |= (MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_); |
| 1577 | smsc911x_mac_write(pdata, MAC_CR, temp); |
| 1578 | spin_unlock_irq(&pdata->mac_lock); |
| 1579 | |
| 1580 | smsc911x_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_); |
| 1581 | |
| 1582 | netif_start_queue(dev); |
| 1583 | return 0; |
| 1584 | } |
| 1585 | |
| 1586 | /* Entry point for stopping the interface */ |
| 1587 | static int smsc911x_stop(struct net_device *dev) |
| 1588 | { |
| 1589 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1590 | unsigned int temp; |
| 1591 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1592 | /* Disable all device interrupts */ |
| 1593 | temp = smsc911x_reg_read(pdata, INT_CFG); |
| 1594 | temp &= ~INT_CFG_IRQ_EN_; |
| 1595 | smsc911x_reg_write(pdata, INT_CFG, temp); |
| 1596 | |
| 1597 | /* Stop Tx and Rx polling */ |
| 1598 | netif_stop_queue(dev); |
| 1599 | napi_disable(&pdata->napi); |
| 1600 | |
| 1601 | /* At this point all Rx and Tx activity is stopped */ |
| 1602 | dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); |
| 1603 | smsc911x_tx_update_txcounters(dev); |
| 1604 | |
| 1605 | /* Bring the PHY down */ |
Steve Glendinning | dd04519 | 2008-12-25 16:40:19 -0800 | [diff] [blame] | 1606 | if (pdata->phy_dev) |
| 1607 | phy_stop(pdata->phy_dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1608 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1609 | SMSC_TRACE(pdata, ifdown, "Interface stopped"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1610 | return 0; |
| 1611 | } |
| 1612 | |
| 1613 | /* Entry point for transmitting a packet */ |
| 1614 | static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 1615 | { |
| 1616 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1617 | unsigned int freespace; |
| 1618 | unsigned int tx_cmd_a; |
| 1619 | unsigned int tx_cmd_b; |
| 1620 | unsigned int temp; |
| 1621 | u32 wrsz; |
| 1622 | ulong bufp; |
| 1623 | |
| 1624 | freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_; |
| 1625 | |
| 1626 | if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD)) |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1627 | SMSC_WARN(pdata, tx_err, |
| 1628 | "Tx data fifo low, space available: %d", freespace); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1629 | |
| 1630 | /* Word alignment adjustment */ |
| 1631 | tx_cmd_a = (u32)((ulong)skb->data & 0x03) << 16; |
| 1632 | tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; |
| 1633 | tx_cmd_a |= (unsigned int)skb->len; |
| 1634 | |
| 1635 | tx_cmd_b = ((unsigned int)skb->len) << 16; |
| 1636 | tx_cmd_b |= (unsigned int)skb->len; |
| 1637 | |
| 1638 | smsc911x_reg_write(pdata, TX_DATA_FIFO, tx_cmd_a); |
| 1639 | smsc911x_reg_write(pdata, TX_DATA_FIFO, tx_cmd_b); |
| 1640 | |
| 1641 | bufp = (ulong)skb->data & (~0x3); |
| 1642 | wrsz = (u32)skb->len + 3; |
| 1643 | wrsz += (u32)((ulong)skb->data & 0x3); |
| 1644 | wrsz >>= 2; |
| 1645 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 1646 | pdata->ops->tx_writefifo(pdata, (unsigned int *)bufp, wrsz); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1647 | freespace -= (skb->len + 32); |
Richard Cochran | 8c0069a | 2011-06-19 21:51:30 +0000 | [diff] [blame] | 1648 | skb_tx_timestamp(skb); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1649 | dev_kfree_skb(skb); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1650 | |
| 1651 | if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30)) |
| 1652 | smsc911x_tx_update_txcounters(dev); |
| 1653 | |
| 1654 | if (freespace < TX_FIFO_LOW_THRESHOLD) { |
| 1655 | netif_stop_queue(dev); |
| 1656 | temp = smsc911x_reg_read(pdata, FIFO_INT); |
| 1657 | temp &= 0x00FFFFFF; |
| 1658 | temp |= 0x32000000; |
| 1659 | smsc911x_reg_write(pdata, FIFO_INT, temp); |
| 1660 | } |
| 1661 | |
| 1662 | return NETDEV_TX_OK; |
| 1663 | } |
| 1664 | |
| 1665 | /* Entry point for getting status counters */ |
| 1666 | static struct net_device_stats *smsc911x_get_stats(struct net_device *dev) |
| 1667 | { |
| 1668 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1669 | smsc911x_tx_update_txcounters(dev); |
| 1670 | dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); |
| 1671 | return &dev->stats; |
| 1672 | } |
| 1673 | |
| 1674 | /* Entry point for setting addressing modes */ |
| 1675 | static void smsc911x_set_multicast_list(struct net_device *dev) |
| 1676 | { |
| 1677 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1678 | unsigned long flags; |
| 1679 | |
| 1680 | if (dev->flags & IFF_PROMISC) { |
| 1681 | /* Enabling promiscuous mode */ |
| 1682 | pdata->set_bits_mask = MAC_CR_PRMS_; |
| 1683 | pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| 1684 | pdata->hashhi = 0; |
| 1685 | pdata->hashlo = 0; |
| 1686 | } else if (dev->flags & IFF_ALLMULTI) { |
| 1687 | /* Enabling all multicast mode */ |
| 1688 | pdata->set_bits_mask = MAC_CR_MCPAS_; |
| 1689 | pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_); |
| 1690 | pdata->hashhi = 0; |
| 1691 | pdata->hashlo = 0; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1692 | } else if (!netdev_mc_empty(dev)) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1693 | /* Enabling specific multicast addresses */ |
| 1694 | unsigned int hash_high = 0; |
| 1695 | unsigned int hash_low = 0; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1696 | struct netdev_hw_addr *ha; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1697 | |
| 1698 | pdata->set_bits_mask = MAC_CR_HPFILT_; |
| 1699 | pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_); |
| 1700 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1701 | netdev_for_each_mc_addr(ha, dev) { |
| 1702 | unsigned int bitnum = smsc911x_hash(ha->addr); |
Jiri Pirko | 2a0d18f | 2010-02-17 23:22:38 +0000 | [diff] [blame] | 1703 | unsigned int mask = 0x01 << (bitnum & 0x1F); |
| 1704 | |
| 1705 | if (bitnum & 0x20) |
| 1706 | hash_high |= mask; |
| 1707 | else |
| 1708 | hash_low |= mask; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1709 | } |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1710 | |
| 1711 | pdata->hashhi = hash_high; |
| 1712 | pdata->hashlo = hash_low; |
| 1713 | } else { |
| 1714 | /* Enabling local MAC address only */ |
| 1715 | pdata->set_bits_mask = 0; |
| 1716 | pdata->clear_bits_mask = |
| 1717 | (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| 1718 | pdata->hashhi = 0; |
| 1719 | pdata->hashlo = 0; |
| 1720 | } |
| 1721 | |
| 1722 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 1723 | |
| 1724 | if (pdata->generation <= 1) { |
| 1725 | /* Older hardware revision - cannot change these flags while |
| 1726 | * receiving data */ |
| 1727 | if (!pdata->multicast_update_pending) { |
| 1728 | unsigned int temp; |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1729 | SMSC_TRACE(pdata, hw, "scheduling mcast update"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1730 | pdata->multicast_update_pending = 1; |
| 1731 | |
| 1732 | /* Request the hardware to stop, then perform the |
| 1733 | * update when we get an RX_STOP interrupt */ |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1734 | temp = smsc911x_mac_read(pdata, MAC_CR); |
| 1735 | temp &= ~(MAC_CR_RXEN_); |
| 1736 | smsc911x_mac_write(pdata, MAC_CR, temp); |
| 1737 | } else { |
| 1738 | /* There is another update pending, this should now |
| 1739 | * use the newer values */ |
| 1740 | } |
| 1741 | } else { |
| 1742 | /* Newer hardware revision - can write immediately */ |
| 1743 | smsc911x_rx_multicast_update(pdata); |
| 1744 | } |
| 1745 | |
| 1746 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 1747 | } |
| 1748 | |
| 1749 | static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id) |
| 1750 | { |
| 1751 | struct net_device *dev = dev_id; |
| 1752 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1753 | u32 intsts = smsc911x_reg_read(pdata, INT_STS); |
| 1754 | u32 inten = smsc911x_reg_read(pdata, INT_EN); |
| 1755 | int serviced = IRQ_NONE; |
| 1756 | u32 temp; |
| 1757 | |
| 1758 | if (unlikely(intsts & inten & INT_STS_SW_INT_)) { |
| 1759 | temp = smsc911x_reg_read(pdata, INT_EN); |
| 1760 | temp &= (~INT_EN_SW_INT_EN_); |
| 1761 | smsc911x_reg_write(pdata, INT_EN, temp); |
| 1762 | smsc911x_reg_write(pdata, INT_STS, INT_STS_SW_INT_); |
| 1763 | pdata->software_irq_signal = 1; |
| 1764 | smp_wmb(); |
| 1765 | serviced = IRQ_HANDLED; |
| 1766 | } |
| 1767 | |
| 1768 | if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) { |
| 1769 | /* Called when there is a multicast update scheduled and |
| 1770 | * it is now safe to complete the update */ |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1771 | SMSC_TRACE(pdata, intr, "RX Stop interrupt"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1772 | smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); |
Steve Glendinning | 1373c0f | 2009-01-26 21:33:16 -0800 | [diff] [blame] | 1773 | if (pdata->multicast_update_pending) |
| 1774 | smsc911x_rx_multicast_update_workaround(pdata); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1775 | serviced = IRQ_HANDLED; |
| 1776 | } |
| 1777 | |
| 1778 | if (intsts & inten & INT_STS_TDFA_) { |
| 1779 | temp = smsc911x_reg_read(pdata, FIFO_INT); |
| 1780 | temp |= FIFO_INT_TX_AVAIL_LEVEL_; |
| 1781 | smsc911x_reg_write(pdata, FIFO_INT, temp); |
| 1782 | smsc911x_reg_write(pdata, INT_STS, INT_STS_TDFA_); |
| 1783 | netif_wake_queue(dev); |
| 1784 | serviced = IRQ_HANDLED; |
| 1785 | } |
| 1786 | |
| 1787 | if (unlikely(intsts & inten & INT_STS_RXE_)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1788 | SMSC_TRACE(pdata, intr, "RX Error interrupt"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1789 | smsc911x_reg_write(pdata, INT_STS, INT_STS_RXE_); |
| 1790 | serviced = IRQ_HANDLED; |
| 1791 | } |
| 1792 | |
| 1793 | if (likely(intsts & inten & INT_STS_RSFL_)) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1794 | if (likely(napi_schedule_prep(&pdata->napi))) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1795 | /* Disable Rx interrupts */ |
| 1796 | temp = smsc911x_reg_read(pdata, INT_EN); |
| 1797 | temp &= (~INT_EN_RSFL_EN_); |
| 1798 | smsc911x_reg_write(pdata, INT_EN, temp); |
| 1799 | /* Schedule a NAPI poll */ |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1800 | __napi_schedule(&pdata->napi); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1801 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1802 | SMSC_WARN(pdata, rx_err, "napi_schedule_prep failed"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1803 | } |
| 1804 | serviced = IRQ_HANDLED; |
| 1805 | } |
| 1806 | |
| 1807 | return serviced; |
| 1808 | } |
| 1809 | |
| 1810 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Steve Glendinning | 1757ab2 | 2008-12-12 22:31:16 -0800 | [diff] [blame] | 1811 | static void smsc911x_poll_controller(struct net_device *dev) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1812 | { |
| 1813 | disable_irq(dev->irq); |
| 1814 | smsc911x_irqhandler(0, dev); |
| 1815 | enable_irq(dev->irq); |
| 1816 | } |
| 1817 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 1818 | |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 1819 | static int smsc911x_set_mac_address(struct net_device *dev, void *p) |
| 1820 | { |
| 1821 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1822 | struct sockaddr *addr = p; |
| 1823 | |
| 1824 | /* On older hardware revisions we cannot change the mac address |
| 1825 | * registers while receiving data. Newer devices can safely change |
| 1826 | * this at any time. */ |
| 1827 | if (pdata->generation <= 1 && netif_running(dev)) |
| 1828 | return -EBUSY; |
| 1829 | |
| 1830 | if (!is_valid_ether_addr(addr->sa_data)) |
| 1831 | return -EADDRNOTAVAIL; |
| 1832 | |
| 1833 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
| 1834 | |
| 1835 | spin_lock_irq(&pdata->mac_lock); |
| 1836 | smsc911x_set_hw_mac_address(pdata, dev->dev_addr); |
| 1837 | spin_unlock_irq(&pdata->mac_lock); |
| 1838 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1839 | netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr); |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 1840 | |
| 1841 | return 0; |
| 1842 | } |
| 1843 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1844 | /* Standard ioctls for mii-tool */ |
| 1845 | static int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 1846 | { |
| 1847 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1848 | |
| 1849 | if (!netif_running(dev) || !pdata->phy_dev) |
| 1850 | return -EINVAL; |
| 1851 | |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 1852 | return phy_mii_ioctl(pdata->phy_dev, ifr, cmd); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1853 | } |
| 1854 | |
| 1855 | static int |
| 1856 | smsc911x_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1857 | { |
| 1858 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1859 | |
| 1860 | cmd->maxtxpkt = 1; |
| 1861 | cmd->maxrxpkt = 1; |
| 1862 | return phy_ethtool_gset(pdata->phy_dev, cmd); |
| 1863 | } |
| 1864 | |
| 1865 | static int |
| 1866 | smsc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1867 | { |
| 1868 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1869 | |
| 1870 | return phy_ethtool_sset(pdata->phy_dev, cmd); |
| 1871 | } |
| 1872 | |
| 1873 | static void smsc911x_ethtool_getdrvinfo(struct net_device *dev, |
| 1874 | struct ethtool_drvinfo *info) |
| 1875 | { |
| 1876 | strlcpy(info->driver, SMSC_CHIPNAME, sizeof(info->driver)); |
| 1877 | strlcpy(info->version, SMSC_DRV_VERSION, sizeof(info->version)); |
Kay Sievers | db1d7bf | 2009-01-26 21:12:58 -0800 | [diff] [blame] | 1878 | strlcpy(info->bus_info, dev_name(dev->dev.parent), |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1879 | sizeof(info->bus_info)); |
| 1880 | } |
| 1881 | |
| 1882 | static int smsc911x_ethtool_nwayreset(struct net_device *dev) |
| 1883 | { |
| 1884 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1885 | |
| 1886 | return phy_start_aneg(pdata->phy_dev); |
| 1887 | } |
| 1888 | |
| 1889 | static u32 smsc911x_ethtool_getmsglevel(struct net_device *dev) |
| 1890 | { |
| 1891 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1892 | return pdata->msg_enable; |
| 1893 | } |
| 1894 | |
| 1895 | static void smsc911x_ethtool_setmsglevel(struct net_device *dev, u32 level) |
| 1896 | { |
| 1897 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1898 | pdata->msg_enable = level; |
| 1899 | } |
| 1900 | |
| 1901 | static int smsc911x_ethtool_getregslen(struct net_device *dev) |
| 1902 | { |
| 1903 | return (((E2P_DATA - ID_REV) / 4 + 1) + (WUCSR - MAC_CR) + 1 + 32) * |
| 1904 | sizeof(u32); |
| 1905 | } |
| 1906 | |
| 1907 | static void |
| 1908 | smsc911x_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs, |
| 1909 | void *buf) |
| 1910 | { |
| 1911 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 1912 | struct phy_device *phy_dev = pdata->phy_dev; |
| 1913 | unsigned long flags; |
| 1914 | unsigned int i; |
| 1915 | unsigned int j = 0; |
| 1916 | u32 *data = buf; |
| 1917 | |
| 1918 | regs->version = pdata->idrev; |
| 1919 | for (i = ID_REV; i <= E2P_DATA; i += (sizeof(u32))) |
| 1920 | data[j++] = smsc911x_reg_read(pdata, i); |
| 1921 | |
| 1922 | for (i = MAC_CR; i <= WUCSR; i++) { |
| 1923 | spin_lock_irqsave(&pdata->mac_lock, flags); |
| 1924 | data[j++] = smsc911x_mac_read(pdata, i); |
| 1925 | spin_unlock_irqrestore(&pdata->mac_lock, flags); |
| 1926 | } |
| 1927 | |
| 1928 | for (i = 0; i <= 31; i++) |
| 1929 | data[j++] = smsc911x_mii_read(phy_dev->bus, phy_dev->addr, i); |
| 1930 | } |
| 1931 | |
| 1932 | static void smsc911x_eeprom_enable_access(struct smsc911x_data *pdata) |
| 1933 | { |
| 1934 | unsigned int temp = smsc911x_reg_read(pdata, GPIO_CFG); |
| 1935 | temp &= ~GPIO_CFG_EEPR_EN_; |
| 1936 | smsc911x_reg_write(pdata, GPIO_CFG, temp); |
| 1937 | msleep(1); |
| 1938 | } |
| 1939 | |
| 1940 | static int smsc911x_eeprom_send_cmd(struct smsc911x_data *pdata, u32 op) |
| 1941 | { |
| 1942 | int timeout = 100; |
| 1943 | u32 e2cmd; |
| 1944 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1945 | SMSC_TRACE(pdata, drv, "op 0x%08x", op); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1946 | if (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1947 | SMSC_WARN(pdata, drv, "Busy at start"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1948 | return -EBUSY; |
| 1949 | } |
| 1950 | |
| 1951 | e2cmd = op | E2P_CMD_EPC_BUSY_; |
| 1952 | smsc911x_reg_write(pdata, E2P_CMD, e2cmd); |
| 1953 | |
| 1954 | do { |
| 1955 | msleep(1); |
| 1956 | e2cmd = smsc911x_reg_read(pdata, E2P_CMD); |
Roel Kluin | 2cf0dbe | 2009-02-20 00:52:19 -0800 | [diff] [blame] | 1957 | } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (--timeout)); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1958 | |
| 1959 | if (!timeout) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1960 | SMSC_TRACE(pdata, drv, "TIMED OUT"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1961 | return -EAGAIN; |
| 1962 | } |
| 1963 | |
| 1964 | if (e2cmd & E2P_CMD_EPC_TIMEOUT_) { |
David S. Miller | 1c01a80 | 2011-04-11 13:44:25 -0700 | [diff] [blame] | 1965 | SMSC_TRACE(pdata, drv, "Error occurred during eeprom operation"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1966 | return -EINVAL; |
| 1967 | } |
| 1968 | |
| 1969 | return 0; |
| 1970 | } |
| 1971 | |
| 1972 | static int smsc911x_eeprom_read_location(struct smsc911x_data *pdata, |
| 1973 | u8 address, u8 *data) |
| 1974 | { |
| 1975 | u32 op = E2P_CMD_EPC_CMD_READ_ | address; |
| 1976 | int ret; |
| 1977 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1978 | SMSC_TRACE(pdata, drv, "address 0x%x", address); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1979 | ret = smsc911x_eeprom_send_cmd(pdata, op); |
| 1980 | |
| 1981 | if (!ret) |
| 1982 | data[address] = smsc911x_reg_read(pdata, E2P_DATA); |
| 1983 | |
| 1984 | return ret; |
| 1985 | } |
| 1986 | |
| 1987 | static int smsc911x_eeprom_write_location(struct smsc911x_data *pdata, |
| 1988 | u8 address, u8 data) |
| 1989 | { |
| 1990 | u32 op = E2P_CMD_EPC_CMD_ERASE_ | address; |
Steve Glendinning | 58add9f | 2009-03-26 07:14:36 +0000 | [diff] [blame] | 1991 | u32 temp; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1992 | int ret; |
| 1993 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 1994 | SMSC_TRACE(pdata, drv, "address 0x%x, data 0x%x", address, data); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 1995 | ret = smsc911x_eeprom_send_cmd(pdata, op); |
| 1996 | |
| 1997 | if (!ret) { |
| 1998 | op = E2P_CMD_EPC_CMD_WRITE_ | address; |
| 1999 | smsc911x_reg_write(pdata, E2P_DATA, (u32)data); |
Steve Glendinning | 58add9f | 2009-03-26 07:14:36 +0000 | [diff] [blame] | 2000 | |
| 2001 | /* Workaround for hardware read-after-write restriction */ |
| 2002 | temp = smsc911x_reg_read(pdata, BYTE_TEST); |
| 2003 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2004 | ret = smsc911x_eeprom_send_cmd(pdata, op); |
| 2005 | } |
| 2006 | |
| 2007 | return ret; |
| 2008 | } |
| 2009 | |
| 2010 | static int smsc911x_ethtool_get_eeprom_len(struct net_device *dev) |
| 2011 | { |
| 2012 | return SMSC911X_EEPROM_SIZE; |
| 2013 | } |
| 2014 | |
| 2015 | static int smsc911x_ethtool_get_eeprom(struct net_device *dev, |
| 2016 | struct ethtool_eeprom *eeprom, u8 *data) |
| 2017 | { |
| 2018 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 2019 | u8 eeprom_data[SMSC911X_EEPROM_SIZE]; |
| 2020 | int len; |
| 2021 | int i; |
| 2022 | |
| 2023 | smsc911x_eeprom_enable_access(pdata); |
| 2024 | |
| 2025 | len = min(eeprom->len, SMSC911X_EEPROM_SIZE); |
| 2026 | for (i = 0; i < len; i++) { |
| 2027 | int ret = smsc911x_eeprom_read_location(pdata, i, eeprom_data); |
| 2028 | if (ret < 0) { |
| 2029 | eeprom->len = 0; |
| 2030 | return ret; |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | memcpy(data, &eeprom_data[eeprom->offset], len); |
| 2035 | eeprom->len = len; |
| 2036 | return 0; |
| 2037 | } |
| 2038 | |
| 2039 | static int smsc911x_ethtool_set_eeprom(struct net_device *dev, |
| 2040 | struct ethtool_eeprom *eeprom, u8 *data) |
| 2041 | { |
| 2042 | int ret; |
| 2043 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 2044 | |
| 2045 | smsc911x_eeprom_enable_access(pdata); |
| 2046 | smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWEN_); |
| 2047 | ret = smsc911x_eeprom_write_location(pdata, eeprom->offset, *data); |
| 2048 | smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWDS_); |
| 2049 | |
| 2050 | /* Single byte write, according to man page */ |
| 2051 | eeprom->len = 1; |
| 2052 | |
| 2053 | return ret; |
| 2054 | } |
| 2055 | |
Steve Glendinning | cb5b04f | 2008-12-25 16:41:09 -0800 | [diff] [blame] | 2056 | static const struct ethtool_ops smsc911x_ethtool_ops = { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2057 | .get_settings = smsc911x_ethtool_getsettings, |
| 2058 | .set_settings = smsc911x_ethtool_setsettings, |
| 2059 | .get_link = ethtool_op_get_link, |
| 2060 | .get_drvinfo = smsc911x_ethtool_getdrvinfo, |
| 2061 | .nway_reset = smsc911x_ethtool_nwayreset, |
| 2062 | .get_msglevel = smsc911x_ethtool_getmsglevel, |
| 2063 | .set_msglevel = smsc911x_ethtool_setmsglevel, |
| 2064 | .get_regs_len = smsc911x_ethtool_getregslen, |
| 2065 | .get_regs = smsc911x_ethtool_getregs, |
| 2066 | .get_eeprom_len = smsc911x_ethtool_get_eeprom_len, |
| 2067 | .get_eeprom = smsc911x_ethtool_get_eeprom, |
| 2068 | .set_eeprom = smsc911x_ethtool_set_eeprom, |
Richard Cochran | b5d1d25 | 2012-04-03 22:59:36 +0000 | [diff] [blame] | 2069 | .get_ts_info = ethtool_op_get_ts_info, |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2070 | }; |
| 2071 | |
Steve Glendinning | 631b756 | 2008-12-25 16:40:47 -0800 | [diff] [blame] | 2072 | static const struct net_device_ops smsc911x_netdev_ops = { |
| 2073 | .ndo_open = smsc911x_open, |
| 2074 | .ndo_stop = smsc911x_stop, |
| 2075 | .ndo_start_xmit = smsc911x_hard_start_xmit, |
| 2076 | .ndo_get_stats = smsc911x_get_stats, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 2077 | .ndo_set_rx_mode = smsc911x_set_multicast_list, |
Steve Glendinning | 631b756 | 2008-12-25 16:40:47 -0800 | [diff] [blame] | 2078 | .ndo_do_ioctl = smsc911x_do_ioctl, |
Ben Hutchings | 635ecaa | 2009-07-09 17:59:01 +0000 | [diff] [blame] | 2079 | .ndo_change_mtu = eth_change_mtu, |
Steve Glendinning | 631b756 | 2008-12-25 16:40:47 -0800 | [diff] [blame] | 2080 | .ndo_validate_addr = eth_validate_addr, |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 2081 | .ndo_set_mac_address = smsc911x_set_mac_address, |
Steve Glendinning | 631b756 | 2008-12-25 16:40:47 -0800 | [diff] [blame] | 2082 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2083 | .ndo_poll_controller = smsc911x_poll_controller, |
| 2084 | #endif |
| 2085 | }; |
| 2086 | |
Steve Glendinning | 31f4574 | 2009-01-27 06:51:12 +0000 | [diff] [blame] | 2087 | /* copies the current mac address from hardware to dev->dev_addr */ |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 2088 | static void smsc911x_read_mac_address(struct net_device *dev) |
Steve Glendinning | 31f4574 | 2009-01-27 06:51:12 +0000 | [diff] [blame] | 2089 | { |
| 2090 | struct smsc911x_data *pdata = netdev_priv(dev); |
| 2091 | u32 mac_high16 = smsc911x_mac_read(pdata, ADDRH); |
| 2092 | u32 mac_low32 = smsc911x_mac_read(pdata, ADDRL); |
| 2093 | |
| 2094 | dev->dev_addr[0] = (u8)(mac_low32); |
| 2095 | dev->dev_addr[1] = (u8)(mac_low32 >> 8); |
| 2096 | dev->dev_addr[2] = (u8)(mac_low32 >> 16); |
| 2097 | dev->dev_addr[3] = (u8)(mac_low32 >> 24); |
| 2098 | dev->dev_addr[4] = (u8)(mac_high16); |
| 2099 | dev->dev_addr[5] = (u8)(mac_high16 >> 8); |
| 2100 | } |
| 2101 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2102 | /* Initializing private device structures, only called from probe */ |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 2103 | static int smsc911x_init(struct net_device *dev) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2104 | { |
| 2105 | struct smsc911x_data *pdata = netdev_priv(dev); |
Kamlakant Patel | 769ce4c | 2012-11-14 01:41:38 +0000 | [diff] [blame] | 2106 | unsigned int byte_test, mask; |
Robert Marklund | 3ac3546 | 2011-10-25 22:05:43 +0000 | [diff] [blame] | 2107 | unsigned int to = 100; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2108 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2109 | SMSC_TRACE(pdata, probe, "Driver Parameters:"); |
| 2110 | SMSC_TRACE(pdata, probe, "LAN base: 0x%08lX", |
| 2111 | (unsigned long)pdata->ioaddr); |
| 2112 | SMSC_TRACE(pdata, probe, "IRQ: %d", dev->irq); |
| 2113 | SMSC_TRACE(pdata, probe, "PHY will be autodetected."); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2114 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2115 | spin_lock_init(&pdata->dev_lock); |
Enric Balletbo i Serra | 35a67ed | 2011-04-05 06:52:49 +0000 | [diff] [blame] | 2116 | spin_lock_init(&pdata->mac_lock); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2117 | |
Sachin Kamat | 6fed959 | 2013-03-18 21:01:38 +0000 | [diff] [blame^] | 2118 | if (pdata->ioaddr == NULL) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2119 | SMSC_WARN(pdata, probe, "pdata->ioaddr: 0x00000000"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2120 | return -ENODEV; |
| 2121 | } |
| 2122 | |
Robert Marklund | 3ac3546 | 2011-10-25 22:05:43 +0000 | [diff] [blame] | 2123 | /* |
| 2124 | * poll the READY bit in PMT_CTRL. Any other access to the device is |
| 2125 | * forbidden while this bit isn't set. Try for 100ms |
Kamlakant Patel | 769ce4c | 2012-11-14 01:41:38 +0000 | [diff] [blame] | 2126 | * |
| 2127 | * Note that this test is done before the WORD_SWAP register is |
| 2128 | * programmed. So in some configurations the READY bit is at 16 before |
| 2129 | * WORD_SWAP is written to. This issue is worked around by waiting |
| 2130 | * until either bit 0 or bit 16 gets set in PMT_CTRL. |
| 2131 | * |
| 2132 | * SMSC has confirmed that checking bit 16 (marked as reserved in |
| 2133 | * the datasheet) is fine since these bits "will either never be set |
| 2134 | * or can only go high after READY does (so also indicate the device |
| 2135 | * is ready)". |
Robert Marklund | 3ac3546 | 2011-10-25 22:05:43 +0000 | [diff] [blame] | 2136 | */ |
Kamlakant Patel | 769ce4c | 2012-11-14 01:41:38 +0000 | [diff] [blame] | 2137 | |
| 2138 | mask = PMT_CTRL_READY_ | swahw32(PMT_CTRL_READY_); |
| 2139 | while (!(smsc911x_reg_read(pdata, PMT_CTRL) & mask) && --to) |
Robert Marklund | 3ac3546 | 2011-10-25 22:05:43 +0000 | [diff] [blame] | 2140 | udelay(1000); |
Kamlakant Patel | 769ce4c | 2012-11-14 01:41:38 +0000 | [diff] [blame] | 2141 | |
Robert Marklund | 3ac3546 | 2011-10-25 22:05:43 +0000 | [diff] [blame] | 2142 | if (to == 0) { |
| 2143 | pr_err("Device not READY in 100ms aborting\n"); |
| 2144 | return -ENODEV; |
| 2145 | } |
| 2146 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2147 | /* Check byte ordering */ |
| 2148 | byte_test = smsc911x_reg_read(pdata, BYTE_TEST); |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2149 | SMSC_TRACE(pdata, probe, "BYTE_TEST: 0x%08X", byte_test); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2150 | if (byte_test == 0x43218765) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2151 | SMSC_TRACE(pdata, probe, "BYTE_TEST looks swapped, " |
| 2152 | "applying WORD_SWAP"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2153 | smsc911x_reg_write(pdata, WORD_SWAP, 0xffffffff); |
| 2154 | |
| 2155 | /* 1 dummy read of BYTE_TEST is needed after a write to |
| 2156 | * WORD_SWAP before its contents are valid */ |
| 2157 | byte_test = smsc911x_reg_read(pdata, BYTE_TEST); |
| 2158 | |
| 2159 | byte_test = smsc911x_reg_read(pdata, BYTE_TEST); |
| 2160 | } |
| 2161 | |
| 2162 | if (byte_test != 0x87654321) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2163 | SMSC_WARN(pdata, drv, "BYTE_TEST: 0x%08X", byte_test); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2164 | if (((byte_test >> 16) & 0xFFFF) == (byte_test & 0xFFFF)) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2165 | SMSC_WARN(pdata, probe, |
| 2166 | "top 16 bits equal to bottom 16 bits"); |
| 2167 | SMSC_TRACE(pdata, probe, |
| 2168 | "This may mean the chip is set " |
| 2169 | "for 32 bit while the bus is reading 16 bit"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2170 | } |
| 2171 | return -ENODEV; |
| 2172 | } |
| 2173 | |
| 2174 | /* Default generation to zero (all workarounds apply) */ |
| 2175 | pdata->generation = 0; |
| 2176 | |
| 2177 | pdata->idrev = smsc911x_reg_read(pdata, ID_REV); |
| 2178 | switch (pdata->idrev & 0xFFFF0000) { |
| 2179 | case 0x01180000: |
| 2180 | case 0x01170000: |
| 2181 | case 0x01160000: |
| 2182 | case 0x01150000: |
David S. Miller | 1805b2f | 2011-10-24 18:18:09 -0400 | [diff] [blame] | 2183 | case 0x218A0000: |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2184 | /* LAN911[5678] family */ |
| 2185 | pdata->generation = pdata->idrev & 0x0000FFFF; |
| 2186 | break; |
| 2187 | |
| 2188 | case 0x118A0000: |
| 2189 | case 0x117A0000: |
| 2190 | case 0x116A0000: |
| 2191 | case 0x115A0000: |
| 2192 | /* LAN921[5678] family */ |
| 2193 | pdata->generation = 3; |
| 2194 | break; |
| 2195 | |
| 2196 | case 0x92100000: |
| 2197 | case 0x92110000: |
| 2198 | case 0x92200000: |
| 2199 | case 0x92210000: |
| 2200 | /* LAN9210/LAN9211/LAN9220/LAN9221 */ |
| 2201 | pdata->generation = 4; |
| 2202 | break; |
| 2203 | |
| 2204 | default: |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2205 | SMSC_WARN(pdata, probe, "LAN911x not identified, idrev: 0x%08X", |
| 2206 | pdata->idrev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2207 | return -ENODEV; |
| 2208 | } |
| 2209 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2210 | SMSC_TRACE(pdata, probe, |
| 2211 | "LAN911x identified, idrev: 0x%08X, generation: %d", |
| 2212 | pdata->idrev, pdata->generation); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2213 | |
| 2214 | if (pdata->generation == 0) |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2215 | SMSC_WARN(pdata, probe, |
| 2216 | "This driver is not intended for this chip revision"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2217 | |
Steve Glendinning | 31f4574 | 2009-01-27 06:51:12 +0000 | [diff] [blame] | 2218 | /* workaround for platforms without an eeprom, where the mac address |
| 2219 | * is stored elsewhere and set by the bootloader. This saves the |
| 2220 | * mac address before resetting the device */ |
Enric Balletbo i Serra | 35a67ed | 2011-04-05 06:52:49 +0000 | [diff] [blame] | 2221 | if (pdata->config.flags & SMSC911X_SAVE_MAC_ADDRESS) { |
| 2222 | spin_lock_irq(&pdata->mac_lock); |
Steve Glendinning | 31f4574 | 2009-01-27 06:51:12 +0000 | [diff] [blame] | 2223 | smsc911x_read_mac_address(dev); |
Enric Balletbo i Serra | 35a67ed | 2011-04-05 06:52:49 +0000 | [diff] [blame] | 2224 | spin_unlock_irq(&pdata->mac_lock); |
| 2225 | } |
Steve Glendinning | 31f4574 | 2009-01-27 06:51:12 +0000 | [diff] [blame] | 2226 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2227 | /* Reset the LAN911x */ |
| 2228 | if (smsc911x_soft_reset(pdata)) |
| 2229 | return -ENODEV; |
| 2230 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2231 | ether_setup(dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2232 | dev->flags |= IFF_MULTICAST; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2233 | netif_napi_add(dev, &pdata->napi, smsc911x_poll, SMSC_NAPI_WEIGHT); |
Steve Glendinning | 631b756 | 2008-12-25 16:40:47 -0800 | [diff] [blame] | 2234 | dev->netdev_ops = &smsc911x_netdev_ops; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2235 | dev->ethtool_ops = &smsc911x_ethtool_ops; |
| 2236 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2237 | return 0; |
| 2238 | } |
| 2239 | |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 2240 | static int smsc911x_drv_remove(struct platform_device *pdev) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2241 | { |
| 2242 | struct net_device *dev; |
| 2243 | struct smsc911x_data *pdata; |
| 2244 | struct resource *res; |
| 2245 | |
| 2246 | dev = platform_get_drvdata(pdev); |
| 2247 | BUG_ON(!dev); |
| 2248 | pdata = netdev_priv(dev); |
| 2249 | BUG_ON(!pdata); |
| 2250 | BUG_ON(!pdata->ioaddr); |
| 2251 | BUG_ON(!pdata->phy_dev); |
| 2252 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2253 | SMSC_TRACE(pdata, ifdown, "Stopping driver"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2254 | |
| 2255 | phy_disconnect(pdata->phy_dev); |
| 2256 | pdata->phy_dev = NULL; |
| 2257 | mdiobus_unregister(pdata->mii_bus); |
| 2258 | mdiobus_free(pdata->mii_bus); |
| 2259 | |
| 2260 | platform_set_drvdata(pdev, NULL); |
| 2261 | unregister_netdev(dev); |
| 2262 | free_irq(dev->irq, dev); |
| 2263 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 2264 | "smsc911x-memory"); |
| 2265 | if (!res) |
Steve Glendinning | d452273 | 2008-12-25 16:44:01 -0800 | [diff] [blame] | 2266 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2267 | |
Julia Lawall | 3942453 | 2009-07-04 11:31:47 +0000 | [diff] [blame] | 2268 | release_mem_region(res->start, resource_size(res)); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2269 | |
| 2270 | iounmap(pdata->ioaddr); |
| 2271 | |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2272 | (void)smsc911x_disable_resources(pdev); |
| 2273 | smsc911x_free_resources(pdev); |
| 2274 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2275 | free_netdev(dev); |
| 2276 | |
| 2277 | return 0; |
| 2278 | } |
| 2279 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 2280 | /* standard register acces */ |
| 2281 | static const struct smsc911x_ops standard_smsc911x_ops = { |
| 2282 | .reg_read = __smsc911x_reg_read, |
| 2283 | .reg_write = __smsc911x_reg_write, |
| 2284 | .rx_readfifo = smsc911x_rx_readfifo, |
| 2285 | .tx_writefifo = smsc911x_tx_writefifo, |
| 2286 | }; |
| 2287 | |
| 2288 | /* shifted register access */ |
| 2289 | static const struct smsc911x_ops shifted_smsc911x_ops = { |
| 2290 | .reg_read = __smsc911x_reg_read_shift, |
| 2291 | .reg_write = __smsc911x_reg_write_shift, |
| 2292 | .rx_readfifo = smsc911x_rx_readfifo_shift, |
| 2293 | .tx_writefifo = smsc911x_tx_writefifo_shift, |
| 2294 | }; |
| 2295 | |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2296 | #ifdef CONFIG_OF |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 2297 | static int smsc911x_probe_config_dt(struct smsc911x_platform_config *config, |
| 2298 | struct device_node *np) |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2299 | { |
| 2300 | const char *mac; |
| 2301 | u32 width = 0; |
| 2302 | |
| 2303 | if (!np) |
| 2304 | return -ENODEV; |
| 2305 | |
| 2306 | config->phy_interface = of_get_phy_mode(np); |
| 2307 | |
| 2308 | mac = of_get_mac_address(np); |
| 2309 | if (mac) |
| 2310 | memcpy(config->mac, mac, ETH_ALEN); |
| 2311 | |
| 2312 | of_property_read_u32(np, "reg-shift", &config->shift); |
| 2313 | |
| 2314 | of_property_read_u32(np, "reg-io-width", &width); |
| 2315 | if (width == 4) |
| 2316 | config->flags |= SMSC911X_USE_32BIT; |
Dave Martin | f26cd41 | 2011-09-13 00:49:29 +0000 | [diff] [blame] | 2317 | else |
| 2318 | config->flags |= SMSC911X_USE_16BIT; |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2319 | |
| 2320 | if (of_get_property(np, "smsc,irq-active-high", NULL)) |
| 2321 | config->irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH; |
| 2322 | |
| 2323 | if (of_get_property(np, "smsc,irq-push-pull", NULL)) |
| 2324 | config->irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL; |
| 2325 | |
| 2326 | if (of_get_property(np, "smsc,force-internal-phy", NULL)) |
| 2327 | config->flags |= SMSC911X_FORCE_INTERNAL_PHY; |
| 2328 | |
| 2329 | if (of_get_property(np, "smsc,force-external-phy", NULL)) |
| 2330 | config->flags |= SMSC911X_FORCE_EXTERNAL_PHY; |
| 2331 | |
| 2332 | if (of_get_property(np, "smsc,save-mac-address", NULL)) |
| 2333 | config->flags |= SMSC911X_SAVE_MAC_ADDRESS; |
| 2334 | |
| 2335 | return 0; |
| 2336 | } |
| 2337 | #else |
| 2338 | static inline int smsc911x_probe_config_dt( |
| 2339 | struct smsc911x_platform_config *config, |
| 2340 | struct device_node *np) |
| 2341 | { |
| 2342 | return -ENODEV; |
| 2343 | } |
| 2344 | #endif /* CONFIG_OF */ |
| 2345 | |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 2346 | static int smsc911x_drv_probe(struct platform_device *pdev) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2347 | { |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2348 | struct device_node *np = pdev->dev.of_node; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2349 | struct net_device *dev; |
| 2350 | struct smsc911x_data *pdata; |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 2351 | struct smsc911x_platform_config *config = pdev->dev.platform_data; |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2352 | struct resource *res, *irq_res; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2353 | unsigned int intcfg = 0; |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2354 | int res_size, irq_flags; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2355 | int retval; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2356 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2357 | pr_info("Driver version %s\n", SMSC_DRV_VERSION); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2358 | |
| 2359 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 2360 | "smsc911x-memory"); |
| 2361 | if (!res) |
| 2362 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 2363 | if (!res) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2364 | pr_warn("Could not allocate resource\n"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2365 | retval = -ENODEV; |
| 2366 | goto out_0; |
| 2367 | } |
Julia Lawall | 3942453 | 2009-07-04 11:31:47 +0000 | [diff] [blame] | 2368 | res_size = resource_size(res); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2369 | |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2370 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 2371 | if (!irq_res) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2372 | pr_warn("Could not allocate irq resource\n"); |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2373 | retval = -ENODEV; |
| 2374 | goto out_0; |
| 2375 | } |
| 2376 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2377 | if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) { |
| 2378 | retval = -EBUSY; |
| 2379 | goto out_0; |
| 2380 | } |
| 2381 | |
| 2382 | dev = alloc_etherdev(sizeof(struct smsc911x_data)); |
| 2383 | if (!dev) { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2384 | retval = -ENOMEM; |
| 2385 | goto out_release_io_1; |
| 2386 | } |
| 2387 | |
| 2388 | SET_NETDEV_DEV(dev, &pdev->dev); |
| 2389 | |
| 2390 | pdata = netdev_priv(dev); |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2391 | dev->irq = irq_res->start; |
| 2392 | irq_flags = irq_res->flags & IRQF_TRIGGER_MASK; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2393 | pdata->ioaddr = ioremap_nocache(res->start, res_size); |
| 2394 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2395 | pdata->dev = dev; |
| 2396 | pdata->msg_enable = ((1 << debug) - 1); |
| 2397 | |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2398 | platform_set_drvdata(pdev, dev); |
| 2399 | |
| 2400 | retval = smsc911x_request_resources(pdev); |
| 2401 | if (retval) |
Lee Jones | 2e1d4a0 | 2012-05-29 18:47:37 +0000 | [diff] [blame] | 2402 | goto out_request_resources_fail; |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2403 | |
| 2404 | retval = smsc911x_enable_resources(pdev); |
| 2405 | if (retval) |
Lee Jones | 2e1d4a0 | 2012-05-29 18:47:37 +0000 | [diff] [blame] | 2406 | goto out_enable_resources_fail; |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2407 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2408 | if (pdata->ioaddr == NULL) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2409 | SMSC_WARN(pdata, probe, "Error smsc911x base address invalid"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2410 | retval = -ENOMEM; |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2411 | goto out_disable_resources; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2412 | } |
| 2413 | |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2414 | retval = smsc911x_probe_config_dt(&pdata->config, np); |
| 2415 | if (retval && config) { |
| 2416 | /* copy config parameters across to pdata */ |
| 2417 | memcpy(&pdata->config, config, sizeof(pdata->config)); |
| 2418 | retval = 0; |
| 2419 | } |
| 2420 | |
| 2421 | if (retval) { |
| 2422 | SMSC_WARN(pdata, probe, "Error smsc911x config not found"); |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2423 | goto out_disable_resources; |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2424 | } |
| 2425 | |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 2426 | /* assume standard, non-shifted, access to HW registers */ |
| 2427 | pdata->ops = &standard_smsc911x_ops; |
| 2428 | /* apply the right access if shifting is needed */ |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2429 | if (pdata->config.shift) |
Mathieu J. Poirier | c326de8 | 2011-04-13 17:13:00 -0700 | [diff] [blame] | 2430 | pdata->ops = &shifted_smsc911x_ops; |
| 2431 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2432 | retval = smsc911x_init(dev); |
| 2433 | if (retval < 0) |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2434 | goto out_disable_resources; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2435 | |
| 2436 | /* configure irq polarity and type before connecting isr */ |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 2437 | if (pdata->config.irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2438 | intcfg |= INT_CFG_IRQ_POL_; |
| 2439 | |
Steve Glendinning | 2107fb8 | 2008-11-05 00:35:38 +0000 | [diff] [blame] | 2440 | if (pdata->config.irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2441 | intcfg |= INT_CFG_IRQ_TYPE_; |
| 2442 | |
| 2443 | smsc911x_reg_write(pdata, INT_CFG, intcfg); |
| 2444 | |
| 2445 | /* Ensure interrupts are globally disabled before connecting ISR */ |
Matthias Brugger | 8e27628 | 2012-06-22 01:10:15 +0000 | [diff] [blame] | 2446 | smsc911x_disable_irq_chip(dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2447 | |
Steve Glendinning | 61307ed | 2009-01-27 06:51:09 +0000 | [diff] [blame] | 2448 | retval = request_irq(dev->irq, smsc911x_irqhandler, |
Steve Glendinning | e81259b | 2009-01-27 06:51:10 +0000 | [diff] [blame] | 2449 | irq_flags | IRQF_SHARED, dev->name, dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2450 | if (retval) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2451 | SMSC_WARN(pdata, probe, |
| 2452 | "Unable to claim requested irq: %d", dev->irq); |
Lee Jones | 163faf3 | 2012-04-19 10:36:33 +0000 | [diff] [blame] | 2453 | goto out_disable_resources; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2454 | } |
| 2455 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2456 | retval = register_netdev(dev); |
| 2457 | if (retval) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2458 | SMSC_WARN(pdata, probe, "Error %i registering device", retval); |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2459 | goto out_free_irq; |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2460 | } else { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2461 | SMSC_TRACE(pdata, probe, |
| 2462 | "Network interface: \"%s\"", dev->name); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2463 | } |
| 2464 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2465 | retval = smsc911x_mii_init(pdev, dev); |
| 2466 | if (retval) { |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2467 | SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2468 | goto out_unregister_netdev_5; |
| 2469 | } |
| 2470 | |
| 2471 | spin_lock_irq(&pdata->mac_lock); |
| 2472 | |
| 2473 | /* Check if mac address has been specified when bringing interface up */ |
| 2474 | if (is_valid_ether_addr(dev->dev_addr)) { |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 2475 | smsc911x_set_hw_mac_address(pdata, dev->dev_addr); |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2476 | SMSC_TRACE(pdata, probe, |
| 2477 | "MAC Address is specified by configuration"); |
Manuel Lauss | aace495 | 2009-10-13 07:25:49 +0000 | [diff] [blame] | 2478 | } else if (is_valid_ether_addr(pdata->config.mac)) { |
| 2479 | memcpy(dev->dev_addr, pdata->config.mac, 6); |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2480 | SMSC_TRACE(pdata, probe, |
| 2481 | "MAC Address specified by platform data"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2482 | } else { |
| 2483 | /* Try reading mac address from device. if EEPROM is present |
| 2484 | * it will already have been set */ |
Akira Takeuchi | 62747cd | 2010-10-27 17:28:58 +0100 | [diff] [blame] | 2485 | smsc_get_mac(dev); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2486 | |
| 2487 | if (is_valid_ether_addr(dev->dev_addr)) { |
| 2488 | /* eeprom values are valid so use them */ |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2489 | SMSC_TRACE(pdata, probe, |
| 2490 | "Mac Address is read from LAN911x EEPROM"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2491 | } else { |
| 2492 | /* eeprom values are invalid, generate random MAC */ |
Danny Kukawka | 7ce5d22 | 2012-02-15 06:45:40 +0000 | [diff] [blame] | 2493 | eth_hw_addr_random(dev); |
Steve Glendinning | 225ddf4 | 2009-03-19 00:24:46 +0000 | [diff] [blame] | 2494 | smsc911x_set_hw_mac_address(pdata, dev->dev_addr); |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2495 | SMSC_TRACE(pdata, probe, |
Joe Perches | 7efd26d | 2012-07-12 19:33:06 +0000 | [diff] [blame] | 2496 | "MAC Address is set to eth_random_addr"); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2497 | } |
| 2498 | } |
| 2499 | |
| 2500 | spin_unlock_irq(&pdata->mac_lock); |
| 2501 | |
Joe Perches | dffc6b2 | 2011-03-25 14:21:22 +0000 | [diff] [blame] | 2502 | netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2503 | |
| 2504 | return 0; |
| 2505 | |
| 2506 | out_unregister_netdev_5: |
| 2507 | unregister_netdev(dev); |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2508 | out_free_irq: |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2509 | free_irq(dev->irq, dev); |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2510 | out_disable_resources: |
| 2511 | (void)smsc911x_disable_resources(pdev); |
Lee Jones | 2e1d4a0 | 2012-05-29 18:47:37 +0000 | [diff] [blame] | 2512 | out_enable_resources_fail: |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2513 | smsc911x_free_resources(pdev); |
Lee Jones | 2e1d4a0 | 2012-05-29 18:47:37 +0000 | [diff] [blame] | 2514 | out_request_resources_fail: |
Robert Marklund | c7e963f | 2011-11-24 01:03:07 +0000 | [diff] [blame] | 2515 | platform_set_drvdata(pdev, NULL); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2516 | iounmap(pdata->ioaddr); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2517 | free_netdev(dev); |
| 2518 | out_release_io_1: |
Julia Lawall | 3942453 | 2009-07-04 11:31:47 +0000 | [diff] [blame] | 2519 | release_mem_region(res->start, resource_size(res)); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2520 | out_0: |
| 2521 | return retval; |
| 2522 | } |
| 2523 | |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2524 | #ifdef CONFIG_PM |
| 2525 | /* This implementation assumes the devices remains powered on its VDDVARIO |
| 2526 | * pins during suspend. */ |
| 2527 | |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2528 | /* TODO: implement freeze/thaw callbacks for hibernation.*/ |
| 2529 | |
| 2530 | static int smsc911x_suspend(struct device *dev) |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2531 | { |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2532 | struct net_device *ndev = dev_get_drvdata(dev); |
| 2533 | struct smsc911x_data *pdata = netdev_priv(ndev); |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2534 | |
| 2535 | /* enable wake on LAN, energy detection and the external PME |
| 2536 | * signal. */ |
| 2537 | smsc911x_reg_write(pdata, PMT_CTRL, |
| 2538 | PMT_CTRL_PM_MODE_D1_ | PMT_CTRL_WOL_EN_ | |
| 2539 | PMT_CTRL_ED_EN_ | PMT_CTRL_PME_EN_); |
| 2540 | |
| 2541 | return 0; |
| 2542 | } |
| 2543 | |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2544 | static int smsc911x_resume(struct device *dev) |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2545 | { |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2546 | struct net_device *ndev = dev_get_drvdata(dev); |
| 2547 | struct smsc911x_data *pdata = netdev_priv(ndev); |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2548 | unsigned int to = 100; |
| 2549 | |
| 2550 | /* Note 3.11 from the datasheet: |
| 2551 | * "When the LAN9220 is in a power saving state, a write of any |
| 2552 | * data to the BYTE_TEST register will wake-up the device." |
| 2553 | */ |
| 2554 | smsc911x_reg_write(pdata, BYTE_TEST, 0); |
| 2555 | |
| 2556 | /* poll the READY bit in PMT_CTRL. Any other access to the device is |
| 2557 | * forbidden while this bit isn't set. Try for 100ms and return -EIO |
| 2558 | * if it failed. */ |
| 2559 | while (!(smsc911x_reg_read(pdata, PMT_CTRL) & PMT_CTRL_READY_) && --to) |
| 2560 | udelay(1000); |
| 2561 | |
| 2562 | return (to == 0) ? -EIO : 0; |
| 2563 | } |
| 2564 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 2565 | static const struct dev_pm_ops smsc911x_pm_ops = { |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2566 | .suspend = smsc911x_suspend, |
| 2567 | .resume = smsc911x_resume, |
| 2568 | }; |
| 2569 | |
| 2570 | #define SMSC911X_PM_OPS (&smsc911x_pm_ops) |
| 2571 | |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2572 | #else |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2573 | #define SMSC911X_PM_OPS NULL |
Daniel Mack | b6907b0 | 2009-05-05 12:22:53 -0700 | [diff] [blame] | 2574 | #endif |
| 2575 | |
Sachin Kamat | d62fdf8 | 2012-12-19 01:17:10 +0000 | [diff] [blame] | 2576 | #ifdef CONFIG_OF |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2577 | static const struct of_device_id smsc911x_dt_ids[] = { |
| 2578 | { .compatible = "smsc,lan9115", }, |
| 2579 | { /* sentinel */ } |
| 2580 | }; |
| 2581 | MODULE_DEVICE_TABLE(of, smsc911x_dt_ids); |
Sachin Kamat | d62fdf8 | 2012-12-19 01:17:10 +0000 | [diff] [blame] | 2582 | #endif |
Shawn Guo | 79f88ee | 2011-07-30 08:26:00 +0000 | [diff] [blame] | 2583 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2584 | static struct platform_driver smsc911x_driver = { |
| 2585 | .probe = smsc911x_drv_probe, |
Bill Pemberton | 8489ec1 | 2012-12-03 09:23:38 -0500 | [diff] [blame] | 2586 | .remove = smsc911x_drv_remove, |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2587 | .driver = { |
Daniel Mack | 6cb8782 | 2009-08-05 08:29:31 +0000 | [diff] [blame] | 2588 | .name = SMSC_CHIPNAME, |
| 2589 | .owner = THIS_MODULE, |
| 2590 | .pm = SMSC911X_PM_OPS, |
Sachin Kamat | d62fdf8 | 2012-12-19 01:17:10 +0000 | [diff] [blame] | 2591 | .of_match_table = of_match_ptr(smsc911x_dt_ids), |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2592 | }, |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2593 | }; |
| 2594 | |
| 2595 | /* Entry point for loading the module */ |
| 2596 | static int __init smsc911x_init_module(void) |
| 2597 | { |
Akira Takeuchi | 62747cd | 2010-10-27 17:28:58 +0100 | [diff] [blame] | 2598 | SMSC_INITIALIZE(); |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 2599 | return platform_driver_register(&smsc911x_driver); |
| 2600 | } |
| 2601 | |
| 2602 | /* entry point for unloading the module */ |
| 2603 | static void __exit smsc911x_cleanup_module(void) |
| 2604 | { |
| 2605 | platform_driver_unregister(&smsc911x_driver); |
| 2606 | } |
| 2607 | |
| 2608 | module_init(smsc911x_init_module); |
| 2609 | module_exit(smsc911x_cleanup_module); |