Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Ethernet driver for the WIZnet W5300 chip. |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 WIZnet Co.,Ltd. |
| 5 | * Copyright (C) 2011 Taehun Kim <kth3321 <at> gmail.com> |
| 6 | * Copyright (C) 2012 Mike Sinkovsky <msink@permonline.ru> |
| 7 | * |
| 8 | * Licensed under the GPL-2 or later. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kconfig.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/etherdevice.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/platform_data/wiznet.h> |
| 18 | #include <linux/ethtool.h> |
| 19 | #include <linux/skbuff.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/errno.h> |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/spinlock.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/ioport.h> |
| 27 | #include <linux/interrupt.h> |
Geert Uytterhoeven | 64d176f | 2012-04-12 09:19:23 +0000 | [diff] [blame] | 28 | #include <linux/irq.h> |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 29 | #include <linux/gpio.h> |
| 30 | |
| 31 | #define DRV_NAME "w5300" |
| 32 | #define DRV_VERSION "2012-04-04" |
| 33 | |
| 34 | MODULE_DESCRIPTION("WIZnet W5300 Ethernet driver v"DRV_VERSION); |
| 35 | MODULE_AUTHOR("Mike Sinkovsky <msink@permonline.ru>"); |
| 36 | MODULE_ALIAS("platform:"DRV_NAME); |
| 37 | MODULE_LICENSE("GPL"); |
| 38 | |
| 39 | /* |
| 40 | * Registers |
| 41 | */ |
| 42 | #define W5300_MR 0x0000 /* Mode Register */ |
| 43 | #define MR_DBW (1 << 15) /* Data bus width */ |
| 44 | #define MR_MPF (1 << 14) /* Mac layer pause frame */ |
| 45 | #define MR_WDF(n) (((n)&7)<<11) /* Write data fetch time */ |
| 46 | #define MR_RDH (1 << 10) /* Read data hold time */ |
| 47 | #define MR_FS (1 << 8) /* FIFO swap */ |
| 48 | #define MR_RST (1 << 7) /* S/W reset */ |
| 49 | #define MR_PB (1 << 4) /* Ping block */ |
| 50 | #define MR_DBS (1 << 2) /* Data bus swap */ |
| 51 | #define MR_IND (1 << 0) /* Indirect mode */ |
| 52 | #define W5300_IR 0x0002 /* Interrupt Register */ |
| 53 | #define W5300_IMR 0x0004 /* Interrupt Mask Register */ |
| 54 | #define IR_S0 0x0001 /* S0 interrupt */ |
| 55 | #define W5300_SHARL 0x0008 /* Source MAC address (0123) */ |
| 56 | #define W5300_SHARH 0x000c /* Source MAC address (45) */ |
| 57 | #define W5300_TMSRL 0x0020 /* Transmit Memory Size (0123) */ |
| 58 | #define W5300_TMSRH 0x0024 /* Transmit Memory Size (4567) */ |
| 59 | #define W5300_RMSRL 0x0028 /* Receive Memory Size (0123) */ |
| 60 | #define W5300_RMSRH 0x002c /* Receive Memory Size (4567) */ |
| 61 | #define W5300_MTYPE 0x0030 /* Memory Type */ |
| 62 | #define W5300_IDR 0x00fe /* Chip ID register */ |
| 63 | #define IDR_W5300 0x5300 /* =0x5300 for WIZnet W5300 */ |
| 64 | #define W5300_S0_MR 0x0200 /* S0 Mode Register */ |
| 65 | #define S0_MR_CLOSED 0x0000 /* Close mode */ |
| 66 | #define S0_MR_MACRAW 0x0004 /* MAC RAW mode (promiscous) */ |
| 67 | #define S0_MR_MACRAW_MF 0x0044 /* MAC RAW mode (filtered) */ |
| 68 | #define W5300_S0_CR 0x0202 /* S0 Command Register */ |
| 69 | #define S0_CR_OPEN 0x0001 /* OPEN command */ |
| 70 | #define S0_CR_CLOSE 0x0010 /* CLOSE command */ |
| 71 | #define S0_CR_SEND 0x0020 /* SEND command */ |
| 72 | #define S0_CR_RECV 0x0040 /* RECV command */ |
| 73 | #define W5300_S0_IMR 0x0204 /* S0 Interrupt Mask Register */ |
| 74 | #define W5300_S0_IR 0x0206 /* S0 Interrupt Register */ |
| 75 | #define S0_IR_RECV 0x0004 /* Receive interrupt */ |
| 76 | #define S0_IR_SENDOK 0x0010 /* Send OK interrupt */ |
| 77 | #define W5300_S0_SSR 0x0208 /* S0 Socket Status Register */ |
| 78 | #define W5300_S0_TX_WRSR 0x0220 /* S0 TX Write Size Register */ |
| 79 | #define W5300_S0_TX_FSR 0x0224 /* S0 TX Free Size Register */ |
| 80 | #define W5300_S0_RX_RSR 0x0228 /* S0 Received data Size */ |
| 81 | #define W5300_S0_TX_FIFO 0x022e /* S0 Transmit FIFO */ |
| 82 | #define W5300_S0_RX_FIFO 0x0230 /* S0 Receive FIFO */ |
| 83 | #define W5300_REGS_LEN 0x0400 |
| 84 | |
| 85 | /* |
| 86 | * Device driver private data structure |
| 87 | */ |
| 88 | struct w5300_priv { |
| 89 | void __iomem *base; |
| 90 | spinlock_t reg_lock; |
| 91 | bool indirect; |
| 92 | u16 (*read) (struct w5300_priv *priv, u16 addr); |
| 93 | void (*write)(struct w5300_priv *priv, u16 addr, u16 data); |
| 94 | int irq; |
| 95 | int link_irq; |
| 96 | int link_gpio; |
| 97 | |
| 98 | struct napi_struct napi; |
| 99 | struct net_device *ndev; |
| 100 | bool promisc; |
| 101 | u32 msg_enable; |
| 102 | }; |
| 103 | |
| 104 | /************************************************************************ |
| 105 | * |
| 106 | * Lowlevel I/O functions |
| 107 | * |
| 108 | ***********************************************************************/ |
| 109 | |
| 110 | /* |
| 111 | * In direct address mode host system can directly access W5300 registers |
| 112 | * after mapping to Memory-Mapped I/O space. |
| 113 | * |
| 114 | * 0x400 bytes are required for memory space. |
| 115 | */ |
| 116 | static inline u16 w5300_read_direct(struct w5300_priv *priv, u16 addr) |
| 117 | { |
| 118 | return ioread16(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); |
| 119 | } |
| 120 | |
| 121 | static inline void w5300_write_direct(struct w5300_priv *priv, |
| 122 | u16 addr, u16 data) |
| 123 | { |
| 124 | iowrite16(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT)); |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * In indirect address mode host system indirectly accesses registers by |
| 129 | * using Indirect Mode Address Register (IDM_AR) and Indirect Mode Data |
| 130 | * Register (IDM_DR), which are directly mapped to Memory-Mapped I/O space. |
| 131 | * Mode Register (MR) is directly accessible. |
| 132 | * |
| 133 | * Only 0x06 bytes are required for memory space. |
| 134 | */ |
| 135 | #define W5300_IDM_AR 0x0002 /* Indirect Mode Address */ |
| 136 | #define W5300_IDM_DR 0x0004 /* Indirect Mode Data */ |
| 137 | |
| 138 | static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr) |
| 139 | { |
| 140 | unsigned long flags; |
| 141 | u16 data; |
| 142 | |
| 143 | spin_lock_irqsave(&priv->reg_lock, flags); |
| 144 | w5300_write_direct(priv, W5300_IDM_AR, addr); |
| 145 | mmiowb(); |
| 146 | data = w5300_read_direct(priv, W5300_IDM_DR); |
| 147 | spin_unlock_irqrestore(&priv->reg_lock, flags); |
| 148 | |
| 149 | return data; |
| 150 | } |
| 151 | |
| 152 | static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data) |
| 153 | { |
| 154 | unsigned long flags; |
| 155 | |
| 156 | spin_lock_irqsave(&priv->reg_lock, flags); |
| 157 | w5300_write_direct(priv, W5300_IDM_AR, addr); |
| 158 | mmiowb(); |
| 159 | w5300_write_direct(priv, W5300_IDM_DR, data); |
| 160 | mmiowb(); |
| 161 | spin_unlock_irqrestore(&priv->reg_lock, flags); |
| 162 | } |
| 163 | |
| 164 | #if defined(CONFIG_WIZNET_BUS_DIRECT) |
| 165 | #define w5300_read w5300_read_direct |
| 166 | #define w5300_write w5300_write_direct |
| 167 | |
| 168 | #elif defined(CONFIG_WIZNET_BUS_INDIRECT) |
| 169 | #define w5300_read w5300_read_indirect |
| 170 | #define w5300_write w5300_write_indirect |
| 171 | |
| 172 | #else /* CONFIG_WIZNET_BUS_ANY */ |
| 173 | #define w5300_read priv->read |
| 174 | #define w5300_write priv->write |
| 175 | #endif |
| 176 | |
| 177 | static u32 w5300_read32(struct w5300_priv *priv, u16 addr) |
| 178 | { |
| 179 | u32 data; |
| 180 | data = w5300_read(priv, addr) << 16; |
| 181 | data |= w5300_read(priv, addr + 2); |
| 182 | return data; |
| 183 | } |
| 184 | |
| 185 | static void w5300_write32(struct w5300_priv *priv, u16 addr, u32 data) |
| 186 | { |
| 187 | w5300_write(priv, addr, data >> 16); |
| 188 | w5300_write(priv, addr + 2, data); |
| 189 | } |
| 190 | |
| 191 | static int w5300_command(struct w5300_priv *priv, u16 cmd) |
| 192 | { |
| 193 | unsigned long timeout = jiffies + msecs_to_jiffies(100); |
| 194 | |
| 195 | w5300_write(priv, W5300_S0_CR, cmd); |
| 196 | mmiowb(); |
| 197 | |
| 198 | while (w5300_read(priv, W5300_S0_CR) != 0) { |
| 199 | if (time_after(jiffies, timeout)) |
| 200 | return -EIO; |
| 201 | cpu_relax(); |
| 202 | } |
| 203 | |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | static void w5300_read_frame(struct w5300_priv *priv, u8 *buf, int len) |
| 208 | { |
| 209 | u16 fifo; |
| 210 | int i; |
| 211 | |
| 212 | for (i = 0; i < len; i += 2) { |
| 213 | fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| 214 | *buf++ = fifo >> 8; |
| 215 | *buf++ = fifo; |
| 216 | } |
| 217 | fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| 218 | fifo = w5300_read(priv, W5300_S0_RX_FIFO); |
| 219 | } |
| 220 | |
| 221 | static void w5300_write_frame(struct w5300_priv *priv, u8 *buf, int len) |
| 222 | { |
| 223 | u16 fifo; |
| 224 | int i; |
| 225 | |
| 226 | for (i = 0; i < len; i += 2) { |
| 227 | fifo = *buf++ << 8; |
| 228 | fifo |= *buf++; |
| 229 | w5300_write(priv, W5300_S0_TX_FIFO, fifo); |
| 230 | } |
| 231 | w5300_write32(priv, W5300_S0_TX_WRSR, len); |
| 232 | } |
| 233 | |
| 234 | static void w5300_write_macaddr(struct w5300_priv *priv) |
| 235 | { |
| 236 | struct net_device *ndev = priv->ndev; |
| 237 | w5300_write32(priv, W5300_SHARL, |
| 238 | ndev->dev_addr[0] << 24 | |
| 239 | ndev->dev_addr[1] << 16 | |
| 240 | ndev->dev_addr[2] << 8 | |
| 241 | ndev->dev_addr[3]); |
| 242 | w5300_write(priv, W5300_SHARH, |
| 243 | ndev->dev_addr[4] << 8 | |
| 244 | ndev->dev_addr[5]); |
| 245 | mmiowb(); |
| 246 | } |
| 247 | |
| 248 | static void w5300_hw_reset(struct w5300_priv *priv) |
| 249 | { |
| 250 | w5300_write_direct(priv, W5300_MR, MR_RST); |
| 251 | mmiowb(); |
| 252 | mdelay(5); |
| 253 | w5300_write_direct(priv, W5300_MR, priv->indirect ? |
| 254 | MR_WDF(7) | MR_PB | MR_IND : |
| 255 | MR_WDF(7) | MR_PB); |
| 256 | mmiowb(); |
| 257 | w5300_write(priv, W5300_IMR, 0); |
| 258 | w5300_write_macaddr(priv); |
| 259 | |
| 260 | /* Configure 128K of internal memory |
| 261 | * as 64K RX fifo and 64K TX fifo |
| 262 | */ |
| 263 | w5300_write32(priv, W5300_RMSRL, 64 << 24); |
| 264 | w5300_write32(priv, W5300_RMSRH, 0); |
| 265 | w5300_write32(priv, W5300_TMSRL, 64 << 24); |
| 266 | w5300_write32(priv, W5300_TMSRH, 0); |
| 267 | w5300_write(priv, W5300_MTYPE, 0x00ff); |
| 268 | mmiowb(); |
| 269 | } |
| 270 | |
| 271 | static void w5300_hw_start(struct w5300_priv *priv) |
| 272 | { |
| 273 | w5300_write(priv, W5300_S0_MR, priv->promisc ? |
| 274 | S0_MR_MACRAW : S0_MR_MACRAW_MF); |
| 275 | mmiowb(); |
| 276 | w5300_command(priv, S0_CR_OPEN); |
Mike Sinkovsky | 376b16f | 2012-04-11 20:14:48 +0000 | [diff] [blame] | 277 | w5300_write(priv, W5300_S0_IMR, S0_IR_RECV | S0_IR_SENDOK); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 278 | w5300_write(priv, W5300_IMR, IR_S0); |
| 279 | mmiowb(); |
| 280 | } |
| 281 | |
| 282 | static void w5300_hw_close(struct w5300_priv *priv) |
| 283 | { |
| 284 | w5300_write(priv, W5300_IMR, 0); |
| 285 | mmiowb(); |
| 286 | w5300_command(priv, S0_CR_CLOSE); |
| 287 | } |
| 288 | |
| 289 | /*********************************************************************** |
| 290 | * |
| 291 | * Device driver functions / callbacks |
| 292 | * |
| 293 | ***********************************************************************/ |
| 294 | |
| 295 | static void w5300_get_drvinfo(struct net_device *ndev, |
| 296 | struct ethtool_drvinfo *info) |
| 297 | { |
| 298 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| 299 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 300 | strlcpy(info->bus_info, dev_name(ndev->dev.parent), |
| 301 | sizeof(info->bus_info)); |
| 302 | } |
| 303 | |
| 304 | static u32 w5300_get_link(struct net_device *ndev) |
| 305 | { |
| 306 | struct w5300_priv *priv = netdev_priv(ndev); |
| 307 | |
| 308 | if (gpio_is_valid(priv->link_gpio)) |
| 309 | return !!gpio_get_value(priv->link_gpio); |
| 310 | |
| 311 | return 1; |
| 312 | } |
| 313 | |
| 314 | static u32 w5300_get_msglevel(struct net_device *ndev) |
| 315 | { |
| 316 | struct w5300_priv *priv = netdev_priv(ndev); |
| 317 | |
| 318 | return priv->msg_enable; |
| 319 | } |
| 320 | |
| 321 | static void w5300_set_msglevel(struct net_device *ndev, u32 value) |
| 322 | { |
| 323 | struct w5300_priv *priv = netdev_priv(ndev); |
| 324 | |
| 325 | priv->msg_enable = value; |
| 326 | } |
| 327 | |
| 328 | static int w5300_get_regs_len(struct net_device *ndev) |
| 329 | { |
| 330 | return W5300_REGS_LEN; |
| 331 | } |
| 332 | |
| 333 | static void w5300_get_regs(struct net_device *ndev, |
| 334 | struct ethtool_regs *regs, void *_buf) |
| 335 | { |
| 336 | struct w5300_priv *priv = netdev_priv(ndev); |
| 337 | u8 *buf = _buf; |
| 338 | u16 addr; |
| 339 | u16 data; |
| 340 | |
| 341 | regs->version = 1; |
| 342 | for (addr = 0; addr < W5300_REGS_LEN; addr += 2) { |
| 343 | switch (addr & 0x23f) { |
| 344 | case W5300_S0_TX_FIFO: /* cannot read TX_FIFO */ |
| 345 | case W5300_S0_RX_FIFO: /* cannot read RX_FIFO */ |
| 346 | data = 0xffff; |
| 347 | break; |
| 348 | default: |
| 349 | data = w5300_read(priv, addr); |
| 350 | break; |
| 351 | } |
| 352 | *buf++ = data >> 8; |
| 353 | *buf++ = data; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | static void w5300_tx_timeout(struct net_device *ndev) |
| 358 | { |
| 359 | struct w5300_priv *priv = netdev_priv(ndev); |
| 360 | |
| 361 | netif_stop_queue(ndev); |
| 362 | w5300_hw_reset(priv); |
| 363 | w5300_hw_start(priv); |
| 364 | ndev->stats.tx_errors++; |
| 365 | ndev->trans_start = jiffies; |
| 366 | netif_wake_queue(ndev); |
| 367 | } |
| 368 | |
| 369 | static int w5300_start_tx(struct sk_buff *skb, struct net_device *ndev) |
| 370 | { |
| 371 | struct w5300_priv *priv = netdev_priv(ndev); |
| 372 | |
Mike Sinkovsky | 376b16f | 2012-04-11 20:14:48 +0000 | [diff] [blame] | 373 | netif_stop_queue(ndev); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 374 | |
| 375 | w5300_write_frame(priv, skb->data, skb->len); |
| 376 | mmiowb(); |
| 377 | ndev->stats.tx_packets++; |
| 378 | ndev->stats.tx_bytes += skb->len; |
| 379 | dev_kfree_skb(skb); |
| 380 | netif_dbg(priv, tx_queued, ndev, "tx queued\n"); |
| 381 | |
| 382 | w5300_command(priv, S0_CR_SEND); |
| 383 | |
| 384 | return NETDEV_TX_OK; |
| 385 | } |
| 386 | |
| 387 | static int w5300_napi_poll(struct napi_struct *napi, int budget) |
| 388 | { |
| 389 | struct w5300_priv *priv = container_of(napi, struct w5300_priv, napi); |
| 390 | struct net_device *ndev = priv->ndev; |
| 391 | struct sk_buff *skb; |
| 392 | int rx_count; |
| 393 | u16 rx_len; |
| 394 | |
| 395 | for (rx_count = 0; rx_count < budget; rx_count++) { |
| 396 | u32 rx_fifo_len = w5300_read32(priv, W5300_S0_RX_RSR); |
| 397 | if (rx_fifo_len == 0) |
| 398 | break; |
| 399 | |
| 400 | rx_len = w5300_read(priv, W5300_S0_RX_FIFO); |
| 401 | |
| 402 | skb = netdev_alloc_skb_ip_align(ndev, roundup(rx_len, 2)); |
| 403 | if (unlikely(!skb)) { |
| 404 | u32 i; |
| 405 | for (i = 0; i < rx_fifo_len; i += 2) |
| 406 | w5300_read(priv, W5300_S0_RX_FIFO); |
| 407 | ndev->stats.rx_dropped++; |
| 408 | return -ENOMEM; |
| 409 | } |
| 410 | |
| 411 | skb_put(skb, rx_len); |
| 412 | w5300_read_frame(priv, skb->data, rx_len); |
| 413 | skb->protocol = eth_type_trans(skb, ndev); |
| 414 | |
| 415 | netif_receive_skb(skb); |
| 416 | ndev->stats.rx_packets++; |
| 417 | ndev->stats.rx_bytes += rx_len; |
| 418 | } |
| 419 | |
| 420 | if (rx_count < budget) { |
| 421 | w5300_write(priv, W5300_IMR, IR_S0); |
| 422 | mmiowb(); |
| 423 | napi_complete(napi); |
| 424 | } |
| 425 | |
| 426 | return rx_count; |
| 427 | } |
| 428 | |
| 429 | static irqreturn_t w5300_interrupt(int irq, void *ndev_instance) |
| 430 | { |
| 431 | struct net_device *ndev = ndev_instance; |
| 432 | struct w5300_priv *priv = netdev_priv(ndev); |
| 433 | |
| 434 | int ir = w5300_read(priv, W5300_S0_IR); |
| 435 | if (!ir) |
| 436 | return IRQ_NONE; |
| 437 | w5300_write(priv, W5300_S0_IR, ir); |
| 438 | mmiowb(); |
| 439 | |
Mike Sinkovsky | 376b16f | 2012-04-11 20:14:48 +0000 | [diff] [blame] | 440 | if (ir & S0_IR_SENDOK) { |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 441 | netif_dbg(priv, tx_done, ndev, "tx done\n"); |
| 442 | netif_wake_queue(ndev); |
| 443 | } |
| 444 | |
| 445 | if (ir & S0_IR_RECV) { |
| 446 | if (napi_schedule_prep(&priv->napi)) { |
| 447 | w5300_write(priv, W5300_IMR, 0); |
| 448 | mmiowb(); |
| 449 | __napi_schedule(&priv->napi); |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | return IRQ_HANDLED; |
| 454 | } |
| 455 | |
| 456 | static irqreturn_t w5300_detect_link(int irq, void *ndev_instance) |
| 457 | { |
| 458 | struct net_device *ndev = ndev_instance; |
| 459 | struct w5300_priv *priv = netdev_priv(ndev); |
| 460 | |
| 461 | if (netif_running(ndev)) { |
| 462 | if (gpio_get_value(priv->link_gpio) != 0) { |
| 463 | netif_info(priv, link, ndev, "link is up\n"); |
| 464 | netif_carrier_on(ndev); |
| 465 | } else { |
| 466 | netif_info(priv, link, ndev, "link is down\n"); |
| 467 | netif_carrier_off(ndev); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | return IRQ_HANDLED; |
| 472 | } |
| 473 | |
| 474 | static void w5300_set_rx_mode(struct net_device *ndev) |
| 475 | { |
| 476 | struct w5300_priv *priv = netdev_priv(ndev); |
| 477 | bool set_promisc = (ndev->flags & IFF_PROMISC) != 0; |
| 478 | |
| 479 | if (priv->promisc != set_promisc) { |
| 480 | priv->promisc = set_promisc; |
| 481 | w5300_hw_start(priv); |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | static int w5300_set_macaddr(struct net_device *ndev, void *addr) |
| 486 | { |
| 487 | struct w5300_priv *priv = netdev_priv(ndev); |
| 488 | struct sockaddr *sock_addr = addr; |
| 489 | |
| 490 | if (!is_valid_ether_addr(sock_addr->sa_data)) |
| 491 | return -EADDRNOTAVAIL; |
| 492 | memcpy(ndev->dev_addr, sock_addr->sa_data, ETH_ALEN); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 493 | w5300_write_macaddr(priv); |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | static int w5300_open(struct net_device *ndev) |
| 498 | { |
| 499 | struct w5300_priv *priv = netdev_priv(ndev); |
| 500 | |
| 501 | netif_info(priv, ifup, ndev, "enabling\n"); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 502 | w5300_hw_start(priv); |
| 503 | napi_enable(&priv->napi); |
| 504 | netif_start_queue(ndev); |
| 505 | if (!gpio_is_valid(priv->link_gpio) || |
| 506 | gpio_get_value(priv->link_gpio) != 0) |
| 507 | netif_carrier_on(ndev); |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static int w5300_stop(struct net_device *ndev) |
| 512 | { |
| 513 | struct w5300_priv *priv = netdev_priv(ndev); |
| 514 | |
| 515 | netif_info(priv, ifdown, ndev, "shutting down\n"); |
| 516 | w5300_hw_close(priv); |
| 517 | netif_carrier_off(ndev); |
| 518 | netif_stop_queue(ndev); |
| 519 | napi_disable(&priv->napi); |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | static const struct ethtool_ops w5300_ethtool_ops = { |
| 524 | .get_drvinfo = w5300_get_drvinfo, |
| 525 | .get_msglevel = w5300_get_msglevel, |
| 526 | .set_msglevel = w5300_set_msglevel, |
| 527 | .get_link = w5300_get_link, |
| 528 | .get_regs_len = w5300_get_regs_len, |
| 529 | .get_regs = w5300_get_regs, |
| 530 | }; |
| 531 | |
| 532 | static const struct net_device_ops w5300_netdev_ops = { |
| 533 | .ndo_open = w5300_open, |
| 534 | .ndo_stop = w5300_stop, |
| 535 | .ndo_start_xmit = w5300_start_tx, |
| 536 | .ndo_tx_timeout = w5300_tx_timeout, |
| 537 | .ndo_set_rx_mode = w5300_set_rx_mode, |
| 538 | .ndo_set_mac_address = w5300_set_macaddr, |
| 539 | .ndo_validate_addr = eth_validate_addr, |
| 540 | .ndo_change_mtu = eth_change_mtu, |
| 541 | }; |
| 542 | |
Bill Pemberton | 0e1effe | 2012-12-03 09:24:07 -0500 | [diff] [blame] | 543 | static int w5300_hw_probe(struct platform_device *pdev) |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 544 | { |
Jingoo Han | 59f92f4 | 2013-08-30 14:07:06 +0900 | [diff] [blame] | 545 | struct wiznet_platform_data *data = dev_get_platdata(&pdev->dev); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 546 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 547 | struct w5300_priv *priv = netdev_priv(ndev); |
| 548 | const char *name = netdev_name(ndev); |
| 549 | struct resource *mem; |
| 550 | int mem_size; |
| 551 | int irq; |
| 552 | int ret; |
| 553 | |
| 554 | if (data && is_valid_ether_addr(data->mac_addr)) { |
| 555 | memcpy(ndev->dev_addr, data->mac_addr, ETH_ALEN); |
| 556 | } else { |
Wei Yongjun | 1f7c9ae | 2012-08-22 21:28:40 +0000 | [diff] [blame] | 557 | eth_hw_addr_random(ndev); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 561 | if (!mem) |
| 562 | return -ENXIO; |
| 563 | mem_size = resource_size(mem); |
| 564 | if (!devm_request_mem_region(&pdev->dev, mem->start, mem_size, name)) |
| 565 | return -EBUSY; |
| 566 | priv->base = devm_ioremap(&pdev->dev, mem->start, mem_size); |
| 567 | if (!priv->base) |
| 568 | return -EBUSY; |
| 569 | |
| 570 | spin_lock_init(&priv->reg_lock); |
| 571 | priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE; |
| 572 | if (priv->indirect) { |
| 573 | priv->read = w5300_read_indirect; |
| 574 | priv->write = w5300_write_indirect; |
| 575 | } else { |
| 576 | priv->read = w5300_read_direct; |
| 577 | priv->write = w5300_write_direct; |
| 578 | } |
| 579 | |
| 580 | w5300_hw_reset(priv); |
| 581 | if (w5300_read(priv, W5300_IDR) != IDR_W5300) |
| 582 | return -ENODEV; |
| 583 | |
| 584 | irq = platform_get_irq(pdev, 0); |
| 585 | if (irq < 0) |
| 586 | return irq; |
| 587 | ret = request_irq(irq, w5300_interrupt, |
| 588 | IRQ_TYPE_LEVEL_LOW, name, ndev); |
| 589 | if (ret < 0) |
| 590 | return ret; |
| 591 | priv->irq = irq; |
| 592 | |
Mike Sinkovsky | 77577bf | 2012-04-10 19:53:53 +0000 | [diff] [blame] | 593 | priv->link_gpio = data ? data->link_gpio : -EINVAL; |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 594 | if (gpio_is_valid(priv->link_gpio)) { |
| 595 | char *link_name = devm_kzalloc(&pdev->dev, 16, GFP_KERNEL); |
| 596 | if (!link_name) |
| 597 | return -ENOMEM; |
| 598 | snprintf(link_name, 16, "%s-link", name); |
| 599 | priv->link_irq = gpio_to_irq(priv->link_gpio); |
| 600 | if (request_any_context_irq(priv->link_irq, w5300_detect_link, |
| 601 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
| 602 | link_name, priv->ndev) < 0) |
| 603 | priv->link_gpio = -EINVAL; |
| 604 | } |
| 605 | |
| 606 | netdev_info(ndev, "at 0x%llx irq %d\n", (u64)mem->start, irq); |
| 607 | return 0; |
| 608 | } |
| 609 | |
Bill Pemberton | 0e1effe | 2012-12-03 09:24:07 -0500 | [diff] [blame] | 610 | static int w5300_probe(struct platform_device *pdev) |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 611 | { |
| 612 | struct w5300_priv *priv; |
| 613 | struct net_device *ndev; |
| 614 | int err; |
| 615 | |
| 616 | ndev = alloc_etherdev(sizeof(*priv)); |
| 617 | if (!ndev) |
| 618 | return -ENOMEM; |
| 619 | SET_NETDEV_DEV(ndev, &pdev->dev); |
| 620 | platform_set_drvdata(pdev, ndev); |
| 621 | priv = netdev_priv(ndev); |
| 622 | priv->ndev = ndev; |
| 623 | |
| 624 | ether_setup(ndev); |
| 625 | ndev->netdev_ops = &w5300_netdev_ops; |
| 626 | ndev->ethtool_ops = &w5300_ethtool_ops; |
| 627 | ndev->watchdog_timeo = HZ; |
| 628 | netif_napi_add(ndev, &priv->napi, w5300_napi_poll, 16); |
| 629 | |
| 630 | /* This chip doesn't support VLAN packets with normal MTU, |
| 631 | * so disable VLAN for this device. |
| 632 | */ |
| 633 | ndev->features |= NETIF_F_VLAN_CHALLENGED; |
| 634 | |
| 635 | err = register_netdev(ndev); |
| 636 | if (err < 0) |
| 637 | goto err_register; |
| 638 | |
| 639 | err = w5300_hw_probe(pdev); |
| 640 | if (err < 0) |
| 641 | goto err_hw_probe; |
| 642 | |
| 643 | return 0; |
| 644 | |
| 645 | err_hw_probe: |
| 646 | unregister_netdev(ndev); |
| 647 | err_register: |
| 648 | free_netdev(ndev); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 649 | return err; |
| 650 | } |
| 651 | |
Bill Pemberton | 0e1effe | 2012-12-03 09:24:07 -0500 | [diff] [blame] | 652 | static int w5300_remove(struct platform_device *pdev) |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 653 | { |
| 654 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 655 | struct w5300_priv *priv = netdev_priv(ndev); |
| 656 | |
| 657 | w5300_hw_reset(priv); |
| 658 | free_irq(priv->irq, ndev); |
| 659 | if (gpio_is_valid(priv->link_gpio)) |
| 660 | free_irq(priv->link_irq, ndev); |
| 661 | |
| 662 | unregister_netdev(ndev); |
| 663 | free_netdev(ndev); |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 664 | return 0; |
| 665 | } |
| 666 | |
Jingoo Han | 4294beb | 2013-03-25 21:02:55 +0000 | [diff] [blame] | 667 | #ifdef CONFIG_PM_SLEEP |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 668 | static int w5300_suspend(struct device *dev) |
| 669 | { |
| 670 | struct platform_device *pdev = to_platform_device(dev); |
| 671 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 672 | struct w5300_priv *priv = netdev_priv(ndev); |
| 673 | |
| 674 | if (netif_running(ndev)) { |
| 675 | netif_carrier_off(ndev); |
| 676 | netif_device_detach(ndev); |
| 677 | |
| 678 | w5300_hw_close(priv); |
| 679 | } |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | static int w5300_resume(struct device *dev) |
| 684 | { |
| 685 | struct platform_device *pdev = to_platform_device(dev); |
| 686 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 687 | struct w5300_priv *priv = netdev_priv(ndev); |
| 688 | |
| 689 | if (!netif_running(ndev)) { |
| 690 | w5300_hw_reset(priv); |
| 691 | w5300_hw_start(priv); |
| 692 | |
| 693 | netif_device_attach(ndev); |
| 694 | if (!gpio_is_valid(priv->link_gpio) || |
| 695 | gpio_get_value(priv->link_gpio) != 0) |
| 696 | netif_carrier_on(ndev); |
| 697 | } |
| 698 | return 0; |
| 699 | } |
Jingoo Han | 4294beb | 2013-03-25 21:02:55 +0000 | [diff] [blame] | 700 | #endif /* CONFIG_PM_SLEEP */ |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 701 | |
| 702 | static SIMPLE_DEV_PM_OPS(w5300_pm_ops, w5300_suspend, w5300_resume); |
| 703 | |
| 704 | static struct platform_driver w5300_driver = { |
| 705 | .driver = { |
| 706 | .name = DRV_NAME, |
| 707 | .owner = THIS_MODULE, |
| 708 | .pm = &w5300_pm_ops, |
| 709 | }, |
| 710 | .probe = w5300_probe, |
Bill Pemberton | 0e1effe | 2012-12-03 09:24:07 -0500 | [diff] [blame] | 711 | .remove = w5300_remove, |
Mike Sinkovsky | 9899b81 | 2012-04-04 19:33:53 +0000 | [diff] [blame] | 712 | }; |
| 713 | |
| 714 | module_platform_driver(w5300_driver); |